Disclosure of Invention
A method of mixing feed with a liquid additive, comprising:
S10, obtaining target addition information of the mixture of the feed and the liquid additives, wherein the target addition information comprises a formula number, all liquid additive types in a mixed formula corresponding to the formula number and the dosage of each liquid additive;
S20, controlling a plurality of weighing tanks with first weighing sensors according to the adding target information, weighing liquid additives in the mixed formula based on a weight reduction method, wherein the types of the liquid additives weighed by each weighing tank are different, and sending all the weighed liquid additives to a fluid mixer;
s30, mixing all liquid additives required by emulsification in a fluid mixer to obtain a homogeneous liquid;
s40, conveying the homogenized liquid to a buffer metering tank provided with a second weighing sensor, weighing the homogenized liquid by the buffer metering tank based on a weight reduction method, and conveying the homogenized liquid to a mixer;
And S50, uniformly mixing the weighed homogeneous liquid with feed raw materials in a mixer to obtain a feed product.
In some optional embodiments of the present application, in step S20:
The liquid additive which is non-pure water is added into the liquid weighed by the weighing tank;
In the direction of gravity, the fluid mixer is below each weighing tank, and all the liquid additives weighed by each weighing tank are sent into the fluid mixer under the action of gravity.
In some alternative embodiments of the present application, when the liquid additive in the mixed formulation comprises water, step S21 is further included:
The water in the mixed formula is conveyed into the fluid mixer through a water inlet pipeline to be mixed with the liquid additives conveyed into the fluid mixer from each weighing tank, and the water inlet pipeline is connected with the fluid mixer.
In some alternative embodiments of the application, the water inflow end of the water inlet line is connected to a liquid holding tank for holding water, from which the amount of water added to the fluid mixer is metered by means of a first flowmeter arranged on the water inlet line.
In some optional embodiments of the present application, the water inlet pipeline is connected to the top of the fluid mixer, the outflow end of the water inlet pipeline extends into the fluid mixer, the outflow end of the water inlet pipeline is provided with a cleaning ball rotationally connected to the water inlet pipeline, the cleaning ball is provided with a water outlet, when the batch addition is finished or the liquid formulation needs to be replaced, the fluid mixer is controlled to empty liquid, an external water source flows into the fluid mixer from the water outlet of the cleaning ball through the water inlet pipeline, and the cleaning ball can rotate relative to the water inlet pipeline under the action of water pressure so as to clean the interior of the fluid mixer;
When the liquid additive in the mixed formulation contains grease, the method further comprises the step of S21':
The grease in the mixed formula is conveyed into the fluid mixer through an oil inlet pipeline and is mixed with the liquid additives conveyed into the fluid mixer from each weighing tank, and the oil inlet pipeline is connected with the fluid mixer;
In some alternative embodiments of the application, the amount of grease added from the grease holding tank into the fluid mixer is measured by a second flowmeter provided on the oil inlet line, the grease inflow end of the oil inlet line being connected to the grease holding tank for storing grease;
In some alternative embodiments of the application, the oil feed line is connected to the top of the fluid mixer, and the outflow end of the oil feed line extends into the fluid mixer.
In some optional embodiments of the present application, step S30 further includes:
Step S31, obtaining the current mixing uniformity of the liquid in the fluid mixer through the current liquid parameters detected by a first liquid sensor and/or a second liquid sensor arranged in the fluid mixer, wherein the first liquid sensor is arranged at the upper part of the inner side wall of the fluid mixer and is used for detecting the first liquid parameters, and the second liquid sensor is arranged at the inner bottom of the fluid mixer and is used for detecting the second liquid parameters, and the first liquid parameters and the second liquid parameters are similar parameters.
In some alternative embodiments of the present application, if the current mixing uniformity is within the preset mixing uniformity range, step S40 is performed.
In some alternative embodiments of the present application, a pneumatic diaphragm pump is used to deliver the homogenized liquid into the buffer metering tank in step S40.
In some optional embodiments of the present application, step S40 further includes:
And S41, connecting the fluid mixer with the buffer metering tank through a first pipeline system, wherein the first pipeline system comprises a photoelectric sensor arranged at the outflow end of the fluid mixer, and sending out an emptying signal when the photoelectric sensor detects that no homogeneous liquid flows out from the outflow end of the fluid mixer.
In some alternative embodiments of the present application, a pneumatic diaphragm pump is used to deliver the homogenized liquid into the buffer metering tank in step S40.
In some alternative embodiments of the present application, the target addition information in step S10 further includes a preset batch amount and a single batch addition amount of the homogeneous liquid,
Step S40 further includes:
Step S42, after the emptying signal is obtained, judging whether the amount of the homogeneous liquid in the buffer metering tank is larger than or equal to the addition amount of the homogeneous liquid in a single batch,
If not, returning to the step S20, judging whether the liquid amount in the weighing tank is within a preset range,
If so, the weigh tank delivers the liquid additive to the fluid mixer,
If not, a daily storage tank for storing the liquid additive delivers the liquid additive to the weigh tank.
If yes, step S43 is performed to continue to determine whether the mixer liquid addition information is received,
If yes, the homogeneous liquid in the buffer metering tank is weighed based on a weight reduction method and then is conveyed to a mixer,
If not, continuing waiting for the liquid adding information of the mixer to be sent out.
In some alternative embodiments of the present application, the homogenized liquid in the buffer metering tank is delivered to the mixer using a variable frequency pump in step S40.
In some optional embodiments of the present application, in step S40, the variable frequency pump is controlled to adjust the conveying flow of the homogenized liquid, and the homogenized liquid weighed by the buffer metering tank is conveyed into the mixer for 30S-50S of preset duration;
In some alternative embodiments of the application, the predetermined time period is 30s, 35s, 40s, 45s or 50s.
In some alternative embodiments of the present application, the buffer metering tank is connected to the mixer through a second pipe system, the second pipe system includes a plurality of nozzles disposed in the mixer and ejecting the homogenized liquid through the nozzles, and the step S40 further includes:
step S44, detecting the pipeline pressure of the second pipeline system in the process of conveying the homogeneous liquid to the mixer,
If the pressure of the pipeline is 0.2-0.4 mpa, the current opening quantity of the nozzles and the running frequency of the variable frequency pump are kept,
If the pipeline pressure exceeds the numerical range of 0.2-0.4 mpa, the current nozzle opening quantity is adjusted, and the operating frequency of the variable frequency pump is adjusted.
In some alternative embodiments of the present application, step S40 includes:
Step S45, detecting whether the loss weight of the liquid in the buffer metering tank is within the set liquid adding amount range in the process of conveying the homogenized liquid to the mixer,
If yes, stopping the operation of the variable frequency pump so as to stop adding the homogeneous liquid to the mixer;
if not, continuing to keep the variable frequency pump to operate so as to convey the homogenized liquid into the mixer.
In some alternative embodiments of the application, the mixer is provided with a moisture sensor for detecting the moisture value of the feed product,
The step S50 includes:
s51, detecting the moisture value of the feed product after the mixing is completed,
If the detected moisture value reaches a preset value, the single batch mixing is ended,
If the detected moisture value does not reach the preset value, adjusting the water or the water-containing liquid in the mixed formula in the step S20 to adjust the moisture value of the next single batch of feed products.
In some optional embodiments of the present application, step S50 further includes:
step S52, after finishing the preparation of the current feed product, judging whether the current finished batch quantity reaches the preset batch quantity,
If yes, ending batch addition;
If not, the process proceeds to step S42.
In some alternative embodiments of the present application, a day tank for storing a liquid additive is formed with a plurality of independent liquid storage areas, a weighing tank group formed by a plurality of weighing tanks is arranged below the day tank in the gravity direction, the plurality of liquid storage areas are connected with the plurality of weighing tanks in a one-to-one correspondence manner,
Step S10 further includes step S11:
judging whether the liquid level of each liquid storage area in the daily storage tank reaches a liquid level preset threshold value,
If yes, controlling the liquid storage area to convey the liquid additive to the corresponding weighing tank under the action of gravity;
If not, the liquid additive in the liquid raw material tank is pumped into the liquid storage area through the third pump.
The beneficial effects are that:
The mixing method of the feed and the liquid additive is based on a unified control method, and firstly, the liquid additive is weighed by adopting different weighing tanks based on target adding information, so that the weighing accuracy of various liquid additives is improved. Each liquid raw material is weighed by adopting a weight-reducing type, the liquid raw materials are not interfered with each other, and the liquid raw materials can be mixed at the same time, so that the time is saved. After homogeneous liquid is obtained in the fluid mixer, the homogeneous liquid is conveyed to a buffer metering tank provided with a second weighing sensor for weighing based on a weight reduction method, so that the problem of low weighing accuracy caused by high viscosity and wall hanging of the liquid can be avoided. After the liquid in the fluid mixer is mixed and emulsified, the homogeneous liquid is completely conveyed into the buffer metering tank for temporary storage and weighing, and at the moment, the fluid mixer can continue to process the next batch of liquid weighed by the weighing tank, so that production is not stopped, and the production efficiency is improved. The application provides a mixing method of feed and liquid additive, which is efficient and has high adding precision.
Detailed Description
The following describes the technical scheme of the embodiment of the present application in detail with reference to fig. 1 to 5.
A method of mixing feed with a liquid additive, comprising:
S10, obtaining target addition information of the mixture of the feed and the liquid additives, wherein the target addition information comprises a formula number, all liquid additive types in a mixed formula corresponding to the formula number and the dosage of each liquid additive;
s20, controlling a plurality of weighing tanks 10 with first weighing sensors 11 according to the adding target information, weighing liquid additives in a mixed formula based on a weight reduction method, wherein the types of the liquid additives weighed by each weighing tank 10 are different, and sending all the weighed liquid additives to a fluid mixer 15;
s30, mixing all liquid additives required by emulsification in a fluid mixer 15 to obtain a homogeneous liquid;
s40, conveying the homogenized liquid to a buffer metering tank 31 provided with a second weighing sensor 32, weighing the homogenized liquid by the buffer metering tank 31 based on a weight reduction method, and conveying the homogenized liquid to a mixer;
And S50, uniformly mixing the weighed homogeneous liquid with feed raw materials in a mixer to obtain a feed product.
In some optional embodiments of the present application, in step S20:
The liquid additives weighed by the weighing tank 10 are all liquid additives which are non-pure water;
in the direction of gravity, the fluid mixer 15 is below each weigh tank 10, and all liquid additives weighed by each weigh tank 10 are fed under gravity into the fluid mixer 15.
In some alternative embodiments of the present application, when the liquid additive in the mixed formulation comprises water, step S21 is further included:
the water in the mixed formulation is delivered from the liquid holding tank 17 to the fluid mixer 15 via a water inlet line 54 for co-mixing with the liquid additives delivered to the fluid mixer 15 from the weighing tanks 10, the water inlet line 54 being connected to the fluid mixer 15.
In some alternative embodiments of the application, the water inflow end of the water inflow line 54 is connected to a liquid holding tank 17 for holding water, and the amount of water added from the liquid holding tank 17 into the fluid mixer 15 is metered by a flow meter provided on the water inflow line.
In some alternative embodiments of the present application, the water inlet pipe 54 is connected to the top of the fluid mixer 15, the outflow end of the water inlet pipe 54 extends into the fluid mixer 15, the outflow end of the water inlet pipe 54 is provided with a cleaning ball 157 rotatably connected to the water inlet pipe 54, the cleaning ball 157 is formed with a water outlet, when the fluid mixer 15 is emptied of liquid, an external water source flows into the fluid mixer 15 through the water inlet pipe 54 from the water outlet of the cleaning ball 157 and the cleaning ball 157 can rotate relative to the water inlet pipe 54 under the action of water pressure to clean the interior of the fluid mixer 15.
In some alternative embodiments of the application, when the liquid additive in the mixed formulation comprises grease, further comprising step S21':
the grease in the mixed formulation is delivered to the fluid mixer 15 via the oil feed line 55 for co-mixing with the liquid additives delivered to the fluid mixer 15 from each weigh tank 10, the oil feed line 55 being connected to the fluid mixer 15.
In some alternative embodiments of the present application, the amount of grease added to the fluid mixer 15 by the grease holding tank is measured by a second flow meter provided on the oil feed line 55, and the grease inflow end of the oil feed line 55 is connected to the grease holding tank for storing grease.
In some alternative embodiments of the present application, an oil feed line 55 is connected to the top of the fluid mixer 15, with the outflow end of the oil feed line 55 extending into the fluid mixer 15.
In some optional embodiments of the present application, step S30 further includes:
in step S31, the current mixing uniformity of the liquid in the fluid mixer 15 is obtained through the current liquid parameters detected by the first liquid sensor 154 and/or the second liquid sensor 155 arranged in the fluid mixer 15, the first liquid sensor 154 is arranged at the upper part of the inner side wall of the fluid mixer 15 and is used for detecting the first liquid parameter, and the second liquid sensor 155 is arranged at the inner bottom of the fluid mixer 15 and is used for detecting the second liquid parameter, wherein the first liquid parameter and the second liquid parameter are similar parameters.
In some alternative embodiments of the present application, when the current mixing uniformity is within the preset mixing uniformity range, step S40 is performed.
In some alternative embodiments of the present application, a pneumatic diaphragm pump is used to deliver the homogenized liquid into cache metering tank 31 in step S40.
In some optional embodiments of the present application, step S40 further includes:
In step S41, the fluid mixer 15 is connected with the buffer metering tank 31 through a first pipeline system, the first pipeline system comprises a photoelectric sensor 25 arranged at the outflow end of the fluid mixer 15, and the photoelectric sensor 25 sends out an emptying signal when detecting that no homogeneous liquid flows out from the outflow end of the fluid mixer 15.
In some alternative embodiments of the present application, the target addition information in step S10 further includes a preset batch amount and a single batch addition amount of the homogeneous liquid,
Step S40 further includes:
step S42, after the emptying signal is obtained, judging whether the amount of the homogeneous liquid in the buffer metering tank 31 is larger than or equal to the addition amount of the homogeneous liquid in a single batch,
If not, returning to step S20, determining whether the amount of liquid in the weigh tank 10 is within a preset range,
If so, weigh tank 10 delivers liquid additive to fluid mixer 15,
If not, the daily storage tank 6 for storing the liquid additive is used for conveying the liquid additive to the weighing tank 10;
if yes, step S43 is performed to continue to determine whether the mixer liquid addition information is received,
If yes, the homogeneous liquid in the buffer metering tank 31 is weighed based on a weight reduction method and then is conveyed to a mixer,
If not, continuing waiting for the liquid adding information of the mixer to be sent out.
In some alternative embodiments of the present application, the homogenized liquid in buffer metering tank 31 is delivered to the mixer using a variable frequency pump in step S40. The variable frequency pump is the second pump 39 in fig. 1.
In some optional embodiments of the present application, in step S40, the variable frequency pump is controlled to adjust the conveying flow of the homogenized liquid, and the homogenized liquid weighed by the buffer metering tank 31 is conveyed into the mixer for 30S-50S of preset duration;
In some alternative embodiments of the application, the predetermined time period is 30s, 35s, 40s, 45s or 50s.
In some alternative embodiments of the present application, the buffer metering tank 31 is connected to the mixer through a second pipe system, the second pipe system includes a plurality of nozzles 47 disposed in the mixer and spraying the homogeneous liquid through the nozzles 47, and the step S40 further includes:
step S44, detecting the pipeline pressure of the second pipeline system in the process of conveying the homogeneous liquid to the mixer,
If the pipeline pressure is 0.2-0.4 mpa, the current opening quantity of the nozzles 47 and the running frequency of the variable frequency pump are kept,
If the pipeline pressure exceeds the numerical range of 0.2-0.4 mpa, the current opening quantity of the nozzles 47 is adjusted, and the running frequency of the variable frequency pump is adjusted.
In some alternative embodiments of the present application, step S40 includes:
step S45, during the process of conveying the homogeneous liquid to the mixer, detecting whether the liquid loss weight in the buffer metering tank 31 is within the set liquid adding amount range,
If yes, stopping the operation of the variable frequency pump so as to stop adding the homogeneous liquid to the mixer;
if not, continuing to keep the variable frequency pump to operate so as to convey the homogenized liquid into the mixer.
In some alternative embodiments of the application, the mixer is provided with a moisture sensor 48 for detecting the moisture value of the feed product,
The step S50 includes:
s51, detecting the moisture value of the feed product after the mixing is completed,
If the detected moisture value reaches a preset value, the single batch mixing is finished,
If the detected moisture value does not reach the preset value, adjusting the water or the water-containing liquid in the mixed formula in the step S20 to adjust the moisture value of the next single batch of feed products.
In some optional embodiments of the present application, step S50 further includes:
step S52, after finishing the preparation of the current feed product, judging whether the current finished batch quantity reaches the preset batch quantity,
If yes, the batch addition is ended,
If not, the method comprises the following steps. The process continues back to step S42.
In some alternative embodiments of the present application, the day tank 6 for storing the liquid additive is formed with a plurality of independent liquid storage areas, the weighing tanks 10 of the plurality of weighing tanks 10 are arranged below the day tank 6 in the gravity direction, the plurality of liquid storage areas are connected with the plurality of weighing tanks 10 one by one,
Step S10 further includes step S11:
Judging whether the liquid level of each liquid storage area in the daily storage tank 6 reaches a liquid level preset threshold value,
If yes, controlling the liquid storage area to convey the liquid additive to the corresponding weighing tank 10 under the action of gravity;
if not, the liquid additive in the liquid feed tank is pumped into the liquid storage area by a pump (specifically, the third pump 3 in fig. 1).
The mixing method of the feed and the liquid additive is based on a unified control method, firstly, different weighing tanks 10 are respectively adopted to weigh the liquid additive based on target adding information, and the weighing accuracy of various liquid additives is improved. Each liquid raw material is weighed by adopting a weight-reducing type, the liquid raw materials are not interfered with each other, and the liquid raw materials can be mixed at the same time, so that the time is saved. After the homogeneous liquid is obtained in the fluid mixer 15, the homogeneous liquid is conveyed to the buffer metering tank 31 provided with the second weighing sensor 32 for weighing by a weight reduction method, so that the problem of low weighing accuracy caused by high viscosity and wall hanging of the liquid can be avoided. After the liquid in the fluid mixer 15 is mixed and emulsified, the homogeneous liquid is completely conveyed into the buffer metering tank 31 for temporary storage and weighing, and at this time, the fluid mixer 15 can continue to process the next batch of liquid weighed by the weighing tank 10, so that production is not stopped, and production efficiency is improved. The application provides a mixing method of feed and liquid additive, which is efficient and has high adding precision.
[ EXAMPLES ]
The method for mixing feed and liquid additive according to the present application can be carried out by the following liquid mixing and adding device.
The multi-liquid mixing and adding device is sequentially provided with a daily storage tank 6, a weighing tank 10 group, a fluid mixer 15 and a buffer metering tank 31 according to the liquid flow direction;
the day tank 6 is formed with a plurality of independent liquid storage areas, the weighing tanks 10 are arranged below the day tank 6 in the gravity direction,
The weighing tank 10 group comprises weighing tanks 10 which are respectively connected with a plurality of liquid storage areas in a one-to-one correspondence manner, each weighing tank 10 is used for weighing the liquid flowing out of the corresponding liquid storage area of the daily storage tank 6 to the weighing tank 10 according to the action of gravity,
The fluid mixer 15 is arranged below the weighing tank 10 group in the gravity direction, the liquid in each weighing tank 10 independently and controllably flows into the fluid mixer 15, and the fluid mixer 15 is used for mixing and homogenizing the liquid flowing out according to the action of gravity after being weighed by the weighing tank 10;
The homogenized liquid of the fluid mixer 15 flows into the buffer metering tank 31 through a first pipeline system, flows into the mixer after being weighed by the buffer metering tank 31 and flows into a second pipeline system, and sprays the liquid to the solid in the mixer through a nozzle 47 set at the inner top of the mixer, wherein the first pipeline system and the second pipeline system are respectively provided with a first pump 29 and a second pump 39 for conveying the liquid.
In some alternative embodiments of the present application, each liquid storage area in the daily tank 6 is correspondingly connected to the liquid outlet end of a liquid inlet pipe 51, and the inflow end of the liquid inlet pipe 51 is used for connecting with a liquid raw material tank.
In some alternative embodiments of the application, each liquid storage area is provided with a level gauge for monitoring the level of the liquid in real time. The level gauge may be a radar level gauge 5 or an ultrasonic level gauge.
In some alternative embodiments of the application, a third pump 3 is provided on the feed pipe 51 for pumping feed stock in a liquid feed tank to the corresponding liquid storage area.
As shown in fig. 1, in some specific examples, three liquid storage areas are provided in the day tank 6, each of which stores a different liquid additive, and each of which is connected to a liquid outlet end of a liquid inlet pipe 51, and an inflow end of the liquid inlet pipe 51 is used for connection to a liquid raw material tank. The liquid inlet pipe 51 is further provided with a fifth hose section 2 and a suction pipe 1 in sequence before the third pump 3, the suction pipe 1 is used for being inserted into a liquid raw material tank to suck liquid, and the fifth hose section 2 connected with the suction pipe 1 in sequence facilitates the movement of the suction pipe 1, so that raw material liquid suction and replacement of the liquid raw material tank are facilitated. The liquid raw material tank comprises an IBC barrel, a round barrel, a large storage tank and the like.
It will be appreciated that in other examples N liquid storage areas may be provided in the day tank 6, N being greater than 1 and a natural number. The liquid storage can be performed using 1 or more liquid storage areas during the production of different feeds.
In some alternative embodiments of the application, a liquid level switch 4 is arranged at the top of each liquid storage area, and when the liquid in the liquid storage area is replenished to the early warning high liquid level, the liquid contacts with the liquid level switch 4 and triggers the liquid level switch 4 to be closed so as to control the liquid replenishing to the liquid storage area to stop.
In some alternative embodiments of the present application, the weighing tank 10 is connected to the corresponding liquid storage area through a first connection pipe 52, and in the gravity direction, the first connection pipe 52 is sequentially provided with a first manual ball valve 7 and a first pneumatic angle seat valve 8, and the first connection pipe 52 is provided with a first hose section 9 connected to the top inflow end of the weighing tank 10, where the inflow end of the first hose section 9 is located after the outflow end of the first pneumatic angle seat valve 8.
In these embodiments, the first manual ball valve 7 manually controls the opening and closing of the first connection pipe 52, facilitating maintenance.
The first pneumatic angle seat valve 8 is provided with an electromagnetic valve, and the main functions are to realize remote automatic control and improve the control precision and response speed of the system. The electromagnetic valve is controlled to be opened and closed through an electric signal, so that the control of compressed air can be realized, and the opening and closing of the pneumatic angle seat valve can be controlled. Thereby achieving precise regulation of fluid control. The opening and closing of the pipeline can be automatically controlled.
In some alternative embodiments of the present application, each weighing tank 10 is connected to the fluid mixer 15 through a second connecting pipeline 53, and in the gravity direction, a second manual ball valve 13 and a second pneumatic angle seat valve 14 are sequentially disposed on the second connecting pipeline 53, and a second hose segment 12 is disposed in the second connecting pipeline 53 and connected to the outflow end at the bottom of the weighing tank 10.
In these embodiments, the manual ball valve and the pneumatic angle seat valve provided on the first connecting line 52 and the second connecting line 53 function substantially identically, the first hose section 9 and the second hose section 12 being provided in order to avoid that the hard connection of the rigid tube to the weighing tank 10 has an influence on the weighing accuracy of the weighing tank 10.
The weighing sensor is arranged on the weighing tank 10, and the liquid in the weighing tank 10 is metered by adopting a weight reduction method, namely the reduction amount of the liquid in the weighing tank 10 is equal to the increase amount of the liquid in the fluid mixer 15.
In some alternative embodiments of the present application, as shown in fig. 2, a first liquid sensor 154 is installed in the top of the fluid mixer 15, a second liquid sensor 155 is installed in the bottom of the fluid mixer 15, and the first liquid sensor 154 and the second liquid sensor 155 are respectively used for detecting a first liquid parameter of an upper liquid portion in the fluid mixer 15 and a second liquid parameter of a lower liquid portion in the fluid mixer 15, wherein the first liquid parameter and the second liquid parameter are similar parameters, and the mixing uniformity of the liquid in the fluid mixer 15 is obtained based on the first liquid parameter and the second liquid parameter.
In some alternative embodiments of the application, the first liquid parameter and the second liquid parameter are the pH of the liquid or the dielectric constant of the liquid.
In some alternative embodiments of the application, the bottom region of the fluid mixer 15 is further provided with an emulsifying cutter 153 and a first agitator 152, the emulsifying cutter 153 being used for homogenizing the liquid, the first agitator 152 being used for mixing the liquid flowing in from each weighing tank 10 uniformly. The emulsifying shears 153 apply a mechanical mechanism rotating at high speed to break up the liquid into fine droplets for preparing a stable homogenous liquid.
In some alternative embodiments of the present application, a scraper 151 is provided on the inner circumference of the fluid mixer 15, the scraper 151 being used to scrape off liquid remaining on the wall of the fluid mixer 15.
The fluid mixer 15 mixes and emulsifies the liquid by the first agitator 152 and the emulsifying shears 153, and the wall scraper 151 can reduce the liquid residue.
In some alternative embodiments of the present application, a first breather 156 is further mounted on the top of the fluid mixer 15, where the first breather 156 is used to keep the air pressure inside and outside the tank balanced, so as to smooth the flow of liquid. The respirator is mainly composed of a shell and a filter element, wherein the shell is usually composed of stainless steel (such as SUS304 or SUS 316L), and the core component of the respirator is the filter element, and polypropylene (PP folding filter element) or polytetrafluoroethylene is usually adopted. Can effectively slow down the internal pressure of the tank and the pipeline, and ensure that the tank or the pipeline is smoothly discharged.
In some optional embodiments of the application, further comprising:
A water inlet line 54 is connected to the top of the fluid mixer 15, the water inlet line 54 being used to deliver water to the fluid mixer 15.
In some alternative embodiments of the present application, the water inlet pipe 54 is further provided with a third manual ball valve 18, a first filter 19, a water pump 20, a first check valve 21, a first flowmeter 22 and a third pneumatic angle seat valve 23 in order, the water pump 20 is used for conveying water from an external water source into the fluid mixer 15, and the flowmeter is used for measuring the water quantity input into the fluid mixer 15.
In some alternative embodiments of the present application, the liquid inlet end of the water inlet pipe 54 is connected with a liquid temporary storage tank 17, the liquid temporary storage tank 17 is provided with a ball float valve 16, the ball float valve 16 is used for controlling the liquid level, when the liquid level rises, the ball float rises along with the liquid level, the lever mechanism drives the switch to act, and the valve is closed, otherwise, when the liquid level falls, the ball float falls, and the valve is opened.
In some alternative embodiments of the present application, an oil feed line 55 is connected to the top of the fluid mixer 15, the oil feed line 55 being used to deliver grease to the fluid mixer 15. In these embodiments, when a large amount of grease is required to be mixed with the feed stock in preparing the feed product, the grease is added using the oil feed line 55 and the weigh tank 10 is used to weigh the less added liquid additive.
In some alternative embodiments of the present application, the liquid inlet end of the oil inlet pipeline 55 is connected with a grease temporary storage tank, the liquid temporary storage tank 17 is provided with a ball float valve 16, the ball float valve 16 is used for controlling the liquid level, when the liquid level rises, the ball float rises along with the liquid level, the lever mechanism drives the switch to act, and the valve is closed, otherwise, when the liquid level falls, the ball float falls, and the valve is opened.
In some alternative embodiments of the present application, a fourth manual ball valve 181, a second filter, a gear pump 24, a second check valve, a second flowmeter, and a fourth pneumatic angle seat valve 231 are further disposed in the grease conveying direction of the oil inlet line 55.
In some alternative embodiments of the present application, the outflow end of the water inlet pipe 54 extends into the fluid mixer 15, the outflow end of the water inlet pipe 54 is provided with a cleaning ball 157 rotatably connected to the water inlet pipe 54, the cleaning ball 157 is formed with a water outlet, an external water source flows into the fluid mixer 15 from the water outlet of the cleaning ball 157 through the water inlet pipe 54 and the cleaning ball 157 can rotate relative to the water inlet pipe 54 under the action of water pressure to clean the interior of the fluid mixer 15.
In the embodiment of the application, the water consumption can be accurately measured through a flowmeter, and the water can be used as one of liquid additives in the embodiment and can also be used as cleaning liquid only.
In some embodiments the cleaning balls 157 are rotatable relative to the interior of the fluid mixer 15 under the influence of water pressure in a direction perpendicular to the axial direction of the fluid mixer 15 itself, so that the cleaning balls 157 can perform better cleaning of the interior of the fluid mixer 15.
In other embodiments, the cleaning ball 157 is formed with a plurality of water outlets, and the water outlet cleaning object of the cleaning ball 157 includes the inner periphery of the fluid mixer 15, the top and bottom of the fluid mixer 15.
In some alternative embodiments of the present application, the first conduit system includes a first connecting main conduit 56,
The first connecting main pipe 56 includes a first rigid pipe section 561 and a third hose section 30 connected, a liquid inflow end of the first rigid pipe section 561 is connected to a liquid outflow end of the bottom of the fluid mixer 15, a liquid outflow end of the first rigid pipe section 561 is connected to a liquid inflow end of the third hose section 30, a liquid outflow end of the third hose section 30 is connected to a liquid inflow end at the top of the buffer metering tank 31, and the first pump 29 is provided on the first rigid pipe section 561.
In some alternative embodiments of the present application, the first connecting main line 56 is provided with a photosensor 25, a fifth pneumatic angle seat valve 26, a fifth manual ball valve 28, and a first pump 29 in this order in the direction of the liquid flow of the first connecting main line 56.
The photoelectric sensor 25 is used to monitor whether the liquid in the fluid mixer 15 is running out and to signal when the absence of liquid in the fluid mixer 15 is detected. The type of the output signal is NPN or PNP output, and the relay or PLC can be driven to send out a signal to the control system.
In some alternative embodiments of the present application, the first pipe system further includes a first branch pipe 59, the connection between the first branch pipe 59 and the first connecting main pipe 56 is between the fifth pneumatic angle seat valve 26 and the fifth manual ball valve 28, and the sixth manual ball valve 27 is disposed on the first branch pipe 59.
In some alternative embodiments of the application, the first pump 29 is an air-operated diaphragm pump.
In some alternative embodiments of the application, as shown in fig. 3, a second agitator 312 is provided in the cache metering tank 31 for agitating the liquid to prevent stratification of the liquid.
The top of the buffer metering tank 31 is also provided with a second respirator 311 for keeping the air pressure balance inside and outside the tank so as to make the liquid inlet and outlet smooth.
In some alternative embodiments of the present application, the fifth pneumatic angle seat valve 26 and the fifth manual ball valve 28 and the sixth manual ball valve 27 on the first manifold 59 control the opening and closing of the first manifold 59. After cleaning the fluid mixer 15, the cleaning fluid can be discharged out of the fluid mixer 15 through the first branch pipe 59 by controlling the above three valves.
In some alternative embodiments of the application, the second pipe system comprises a set of connected second connecting main pipes 57 and outlet pipes 58,
The second connecting main pipe 57 includes a second rigid pipe section 571 and a fourth pipe section 33 which are connected, the liquid inflow end of the fourth pipe section 33 is connected to the liquid outflow end at the bottom of the buffer metering tank 31, the liquid outflow end of the fourth pipe section 33 is connected to the liquid inflow end of the second rigid pipe section 571, the liquid outflow end of the second rigid pipe section 571 is connected to the total inflow end of the water outlet branch pipe 58,
The water outlet pipe 58 group comprises a plurality of water outlet pipes 58 connected in parallel, each water outlet pipe 58 is connected with one or a plurality of nozzles 47, each water outlet pipe 58 is provided with a sixth pneumatic angle seat valve 46 in front of the liquid inlet ends of all the nozzles 47, and all the nozzles 47 form a nozzle 47 group.
In some alternative embodiments of the present application, the second rigid pipe section 571 is provided with the seventh pneumatic angle seat valve 34, the seventh manual ball valve 36, the third filter 37, the third check valve 38, the second pump 39, the pressure sensor 41, the eighth manual ball valve 42, and the eighth pneumatic angle seat valve 43 in this order in the direction of the flow of the liquid in the second connecting main pipe 57.
In some alternative embodiments of the present application, the second pipe system further includes a second branch pipe 60, a connection between the second branch pipe 60 and the second connecting main pipe 57 is disposed between the seventh pneumatic angle seat valve 34 and the seventh manual ball valve 36, and the ninth manual ball valve 35 is further disposed on the second branch pipe 60.
In some alternative embodiments of the present application, the second pipe system further includes a third branch pipe 61, a connection between the third branch pipe 61 and the second connection main pipe 57 is provided between the second pump 39 and the pressure sensor 41, and a tenth manual ball valve 40 is provided on the third branch pipe 61.
In some alternative embodiments of the present application, the second pipe system further includes a fourth branch pipe 62, a connection between the fourth branch pipe 62 and the second connecting main pipe 57 is disposed between the eighth pneumatic angle seat valve 43 and the total inflow end of the water outlet branch pipe 58 group, the fourth branch pipe 62 is used for delivering compressed gas to the water outlet branch pipe 58 group, an eleventh manual ball valve 44 and a blowing valve 45 are sequentially disposed on the fourth branch pipe 62 in the delivery direction of the compressed gas, and the blowing valve 45 is used for controlling the amount of compressed air pumped from the outside to clean the second pipe system, and the number of nozzles 47 for spraying liquid is controlled by controlling the opening number of the sixth pneumatic angle seat valve 46 so that the pressure of the second pipe system reaches a preset value.
In some alternative embodiments of the application, a mixing chamber and a buffer bucket positioned below the mixing chamber are formed in the mixer, a stirring and mixing mechanism is arranged in the mixing chamber, and a moisture sensor 48 is arranged in the buffer bucket and used for detecting the moisture content of the product obtained by mixing the liquid and the solid.
The manual valve in the pipeline system is arranged to manually control the on-off of the pipeline, so that the maintenance is convenient. The pneumatic angle seat valve is provided with an electromagnetic valve, and the opening and closing of the pipeline are automatically controlled according to a control signal. The ninth manual ball valve 35 provided in the second branch pipe 60 can be opened by controlling the seventh pneumatic angle seat valve 34 and the ninth manual ball valve 35 provided in the second branch pipe 60 to discharge the liquid remaining in the buffer metering tank 31 when the formulation is changed to mix the feed and the liquid additive.
The third branch pipe 61 is provided between the second pump 39 and the pressure sensor 41, and serves as a sampling port for taking out the liquid, verifying the amount of the liquid output from the buffer metering tank 31, and verifying the accuracy of the apparatus. The cleaning liquid can also be discharged when the pipeline and the pump are cleaned.
The filter arrangement prevents foreign matter from entering the second pump 39 and causing damage.
The second pump 39 is designed as a variable frequency pump that can deliver the liquid in the buffer metering tank 31 to the mixer. The control of the liquid delivery amount is achieved by a variable frequency function in a variable frequency pump, specifically a gear pump 24, a rotor pump or a screw pump. By adjusting the pump operating rate, the amount of liquid delivered can be controlled.
The pressure sensor 41 may detect the pressure on the second connecting main line 57 and transmit the pressure data to the central control system.
The central control system controls the on-off of the sixth pneumatic angle seat valve 46 on each water outlet branch pipe 58 according to the received pressure data, thereby controlling the use quantity of the nozzles 47 and ensuring the proper pressure in the adding process. The nozzle 47 sprays the mixed liquid of the liquid additive to the mixing chamber, and the stirring and mixing mechanism works simultaneously to realize the mixing, adding and manufacturing of the solid feed and the liquid additive.
In the process of adding liquid additives to liquid feed raw materials to prepare a feed end product by mixing, the site control cabinet 50 is installed in a feed shop to remotely control a multi-liquid batching device.
The central control room control cabinet 49 is arranged in the central control room, remotely controls the multi-liquid batching device and is provided with a touch screen and an audible and visual alarm device.
As shown in fig. 4, the mixing method of the feed and the liquid additive according to the embodiment of the application based on the device specifically comprises the following steps:
S10, obtaining target adding information of mixing the feed and the liquid additives, wherein the target adding information comprises formula numbers, all liquid additive types in a mixed formula corresponding to the formula numbers and the dosage of each liquid additive. The batch addition may be initiated after the target addition information for the feed and liquid additive mix is obtained in these embodiments.
The target addition information in step S10 further includes a preset batch amount and a single batch addition amount of the homogeneous liquid.
Step S10 further includes step S11:
judging whether the liquid level of each liquid storage area in the daily storage tank 6 reaches a liquid level preset threshold (for example, the liquid level preset threshold is 90%),
If yes, controlling the liquid storage area to convey the liquid additive to the corresponding weighing tank 10 under the action of gravity;
If not, the liquid additive in the liquid feed tank is pumped into the liquid storage area by a pump (e.g., an air-operated diaphragm pump).
And S20, controlling a plurality of weighing tanks 10 with the first weighing sensors 11 according to the adding target information, weighing the liquid additives in the mixed formula based on a weight reduction method, weighing the liquid additives in different types by the weighing tanks 10, and sending all the weighed liquid additives to the fluid mixer 15.
In step S20:
The liquid additives weighed by the weighing tank 10 are all liquid additives which are non-pure water;
in the direction of gravity, the fluid mixer 15 is below each weigh tank 10, and all liquid additives weighed by each weigh tank 10 are fed under gravity into the fluid mixer 15.
When the liquid additive in the mixed formulation contains water, the method further comprises step S21:
the water in the mixed formulation is delivered to the fluid mixer 15 via a water inlet line 54 for co-mixing with the liquid additives delivered to the fluid mixer 15 from each weigh tank 10, the water inlet line 54 being connected to the fluid mixer 15.
The step S21 specifically includes:
Step S211, judging whether the liquid amount in the weighing tank 10 is within the liquid amount setting range of the weighing tank 10, wherein the liquid amount setting range of the weighing tank 10 is the set value + the allowable deviation of the weighing tank 10,
If so, the weigh tank 10 delivers liquid to the fluid mixer 15;
If not, the daily tank 6 is kept in the liquid feed state to the weighing tank 10.
Step S212, judging whether the liquid loss weight of the weighing tank 10 is within the liquid loss weight setting range of the weighing tank 10, wherein the liquid loss weight setting range of the weighing tank 10 is the liquid loss weight + allowable deviation of the weighing tank 10,
If so, water is supplied to the fluid mixer 15 by the water pump 20 (here, the operation is performed when water is contained in the formulation, and if not, the operation is not performed),
If not, the holding weigh tank 10 continues to deliver liquid to the fluid mixer 15.
Step S213, judging whether the feed back of the first flowmeter 22 is within the water increment setting range, wherein the water increment setting range is the water setting dosage + allowable deviation of the mixed formula,
If yes, go to step S30;
if not, the water pump 20 continues to deliver water to the fluid mixer 15.
When the liquid additive in the mixed formulation contains grease, the method further comprises the step of S21':
The grease in the mixed formula is conveyed into the fluid mixer 15 through the oil inlet pipeline 55 and is mixed with the liquid additive conveyed to the fluid mixer 15 from each weighing tank 10, and the oil inlet pipeline 55 is connected with the fluid mixer 15;
The amount of grease added to the fluid mixer 15 is metered by a second flowmeter provided on the oil feed line 55;
the oil feed line 55 is connected to the top of the fluid mixer 15, and the outflow end of the oil feed line 55 extends into the fluid mixer 15.
Step S21' (omitted in fig. 4) specifically includes:
Step S211', judging whether the liquid amount in the weighing tank 10 is within the liquid amount setting range of the weighing tank 10, wherein the liquid amount setting range of the weighing tank 10 is the set value + the allowable deviation of the weighing tank 10,
If so, the weigh tank 10 delivers liquid to the fluid mixer 15;
If not, the daily tank 6 is kept in the liquid feed state to the weighing tank 10.
Step S212', judging whether the liquid loss weight of the weighing tank 10 is within the liquid loss weight setting range of the weighing tank 10, wherein the liquid loss weight setting range of the weighing tank 10 is the liquid loss weight + the allowable deviation of the weighing tank 10,
If so, the grease is fed to the fluid mixer 15 by the gear pump 24 (here, the operation when the grease is contained in the formulation is not performed if not),
If not, the holding weigh tank 10 continues to deliver liquid to the fluid mixer 15.
Step S213', judging whether the feed back of the second flowmeter is in the grease increasing amount setting range, setting the batching amount + allowable deviation for the grease in the mixed formula in the grease increasing amount setting range,
If yes, go to step S30;
If not, the gear pump 24 is continuously kept delivering grease to the fluid mixer 15.
In some embodiments, the operations of delivering grease and delivering water to the fluid mixer 15 in S21' and S21, respectively, may be synchronized.
All liquid additives required for emulsification are mixed in the fluid mixer 15 to obtain a homogeneous liquid S30.
Step S30 further includes:
Step S31, acquiring the current mixing uniformity of the liquid in the fluid mixer 15 through the current liquid parameters detected by the first liquid sensor 154 and/or the second liquid sensor 155 arranged in the fluid mixer 15, wherein the first liquid sensor 154 is arranged at the upper part of the inner side wall of the fluid mixer 15, the second liquid sensor 155 is arranged at the inner bottom of the fluid mixer 15, and the first liquid parameters and the second liquid parameters are similar parameters;
Judging whether the current mixing uniformity is within a preset mixing uniformity range (target value of mixing uniformity + allowable deviation)
If yes, that is, when the current mixing uniformity is within the preset mixing uniformity range, executing step S40;
If not, the fluid mixer 15 is continuously operated to perform the mixing and homogenizing treatment on the plurality of liquid additives.
And S40, conveying the homogenized liquid to a buffer metering tank 31 provided with a second weighing sensor 32, weighing the homogenized liquid by the buffer metering tank 31 based on a weight reduction method, and conveying the homogenized liquid to a mixer.
Step S41, the fluid mixer 15 is connected with the buffer metering tank 31 through a first pipeline system, the first pipeline system comprises a photoelectric sensor 25 arranged at the outflow end of the fluid mixer 15, and the photoelectric sensor 25 sends out an emptying signal when detecting that no homogeneous liquid flows out from the outflow end of the fluid mixer 15;
in step S40, the homogeneous solution is fed into the buffer metering tank 31 by using an air-operated diaphragm pump.
The photoelectric sensor 25 detects whether the homogenized liquid flows out from the outflow end of the fluid mixer 15 in step S41,
If yes, go to step S42;
if not, the pneumatic diaphragm pump is kept working, and the liquid in the fluid mixer 15 is quickly conveyed into the buffer metering tank 31.
Step S40 further includes:
step S42, after the emptying signal is obtained, judging whether the amount of the homogeneous liquid in the buffer metering tank 31 is larger than or equal to the addition amount of the homogeneous liquid in a single batch,
If not, returning to step S20, determining whether the amount of liquid in the weigh tank 10 is within a preset range,
If so, weigh tank 10 delivers the liquid additive to the mixer,
If not, the liquid additive is delivered to weigh tank 10.
If yes, step S43 is performed to continue to determine whether a mixer liquid addition signal has been received,
If yes, the homogeneous liquid in the buffer metering tank 31 is weighed based on a weight reduction method and then is conveyed to a mixer, and in step S40, the homogeneous liquid in the buffer metering tank 31 is conveyed to the mixer by adopting a second pump 39 (variable frequency pump);
if not, continuing waiting for the liquid adding information of the mixer to be sent out.
The buffer metering tank 31 is connected to the mixer through a second pipeline system, the second pipeline system includes a plurality of nozzles 47 disposed in the mixer and sprays homogeneous liquid through the nozzles 47, and the step S40 further includes:
Step S44, detecting the pipeline pressure of the second pipeline system and judging whether the pipeline pressure is in the range of 0.2 mpa-0.4 mpa or not in the process of conveying the homogenized liquid to the mixer, wherein the pipeline pressure comprises an endpoint value;
if the pipeline pressure is between 0.2mpa and 0.4mpa, the current opening number of the nozzles 47 and the operating frequency of the second pump 39 are maintained,
If the pipeline pressure exceeds the numerical range of 0.2-0.4 mpa, adjusting the current opening quantity of the nozzles 47 and adjusting the operating frequency of the second pump 39;
step S45, during the process of conveying the homogeneous liquid to the mixer, detecting whether the liquid loss weight in the buffer metering tank 31 is within the set liquid adding amount range,
If yes, stopping the second pump 39 to stop adding the homogeneous liquid to the mixer;
if not, the second pump 39 continues to operate to deliver the homogenized liquid to the mixer.
And S50, uniformly mixing the weighed homogeneous liquid with feed raw materials in a mixer to obtain a feed product.
The mixer is provided with a moisture sensor 48 for detecting the moisture value of the feed product,
The step S50 includes:
Step S51, detecting the moisture value of the feed product after the mixing is completed, ending the single batch mixing if the detected moisture value reaches a preset value,
If the detected moisture value does not reach the preset value, adjusting the water or the water-containing liquid in the mixed formula in the step S20 to adjust the moisture value of the next single batch of feed products.
Step S50 further includes:
Step S52, after the preparation of the current feed product is finished, judging whether the current finished batch quantity reaches the preset batch quantity, if so, ending the batch addition, and if not, continuing to return to the step S42.
According to the mixing method of the feed and the liquid additive, provided by the embodiment of the application, various liquid raw materials are conveyed to the daily storage tank 6 through the pneumatic diaphragm pump. When the liquid in the weighing tank 10 is insufficient, the liquid in the daily storage tank 6 flows into the weighing tank 10 for replenishment under the action of gravity through the control of the pneumatic angle seat valve. The weighing tank 10 adopts a weight reduction method to meter the liquid, namely the reduction amount of the liquid in the weighing tank 10 is equal to the increase amount of the liquid entering the fluid mixer 15, so that the influence of the liquid wall hanging on the metering precision is eliminated. The water is pumped into the fluid mixer 15, and the cleaning balls 157 are arranged in the tank, so that the water flow can be dispersed in the process of emptying the fluid mixer 15 to stop the mixed oxidation operation, and the fluid mixer 15 can be cleaned. The fluid mixer 15 mixes and emulsifies the liquid by the agitator and emulsifying shears 153, and the wall scraper 151 can reduce the liquid residue. The first liquid sensor 154 and/or the second liquid sensor 155 installed at the upper and lower parts can detect the mixing uniformity of the liquid, and the liquid after the mixing and emulsification is completed is quickly transferred to the buffer metering tank 31 through the pneumatic diaphragm pump. The stirring paddle in the tank can ensure the flow of liquid and prevent the liquid from layering.
The liquid in the buffer metering tank 31 is pumped into the mixer in a set amount, and the decrease in liquid in the buffer metering tank 31 is equal to the increase in liquid entering the mixer. The second pump 39 can regulate the delivery rate to ensure that the liquid is added within a very short period of time 40 s. The front end of the nozzle 47 is provided with pneumatic angle seat valves, the system can automatically calculate the opening quantity and the position of the pneumatic angle seat valves according to the pipeline real-time pressure, and the pressure of 0.2-0.4 mpa at the nozzle 47 is ensured, so that the spraying effect is optimal.
A moisture sensor 48 mounted on the mixer buffer hopper detects moisture in the mixed feed. If the feed moisture deviates from the set point, the dosage of water or aqueous feed liquid in the fluid mixer 15 is adjusted in the next batch until the feed moisture reaches the set point.
As shown in fig. 5, in some alternative embodiments, the method of mixing feed with liquid additives provided by the present application is implemented by a system comprising a central control system of a feed plant, multiple liquid adding devices, a feed mixer (i.e., the mixer of fig. 1), and in particular,
The central control system of the feed factory transmits feed information to the multi-liquid adding equipment, wherein the feed information comprises the formula number, batch quantity and liquid consumption of the feed;
The multi-liquid adding device obtains liquid additives and water from the outside of the system, and adds liquid into the feed mixer after receiving feed information, and the liquid is mixed in the feed mixer;
In the process of mixing by the feed mixer, liquid adding information and material moisture feedback can be transmitted to the multi-liquid adding device, and after the liquid adding information and the material moisture feedback are received, the multi-liquid adding device adjusts the added liquid, so that the added liquid type and the liquid consumption are consistent with the feed information.
The mixing method of the feed and the liquid additive provided by the embodiment of the application can realize the rapid, efficient and accurate mixing of the feed and the liquid additive to obtain a final feed mixed product.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.