Explosion-proof dust removal recovery unit of powder spraying equipmentTechnical Field
The invention relates to a dust removing system device, in particular to an explosion-proof dust removing and recycling device of powder spraying equipment.
Background
Electrostatic powder spraying is a common process in modern industry, and is based on the principle of electrostatic attraction, i.e. a grounded coated object is used as an anode, an oil atomizer (i.e. a spray cup or a spray disc) is connected with high-voltage electricity as a cathode, strip steel to be oiled passes through an upper oil spraying beam and a lower oil spraying beam, and the oil spraying beam is made of special aluminum alloy and is fixed on an adjustable insulating support arm. The gap on the oil spraying beam can be uniformly regulated to 0.2mm, an oil groove is formed in the oil spraying beam, the oil inlet pipe is connected to the middle part, and the two oil return pipes are respectively connected to the two ends. The upper and lower spray beams are spaced from the strip steel by a distance, and the spray beams are designed so that oil flows to the spray nozzles at zero pressure. The oil spraying beam is electrified, a high-voltage electrostatic field is generated between the oil spraying beam and the grounded strip steel, corona discharge is generated at the negative electrode, and the sprayed oil mist is negatively charged. The charged particles are efficiently and uniformly adsorbed on the passing strip steel along the direction of the electric line of force under the action of the electrostatic field, and a unique encircling effect is presented. The electrostatic spraying can also adopt positive corona discharge, but the critical voltage (starting voltage) of negative corona discharge is lower than that of positive corona discharge, so that the electrostatic spraying is stable, safe and difficult to generate sparks.
When powder spraying equipment sprays powder, a large amount of powder particles in powder airflow probably can be dissociated into the air, so the dust needs to be recycled to improve the utilization rate of raw materials, and the original recycling device has low recycling efficiency, does not form a complete recycling system, and cannot meet the development requirements of the modern industry.
At present, although a cyclone dust collector or a filter element dust collector is used for recycling dust in production, the current cyclone dust collector can only collect dust with larger particles, the dust recycling rate is lower, some tiny dust can still be discharged out of the cyclone dust collector along with air flow, and the current filter element dust collector can block most dust, but the dust is easy to be attached to a filter element, so that the dust is inconvenient to recycle.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems existing in the prior art, the invention aims to provide an explosion-proof dust removal recovery device of powder spraying equipment, which can realize dust removal and recovery of air in a powder spraying room through a cyclone recovery device and a filter element recovery device, and can realize water spraying dust fall in the filter element recovery device and fire extinguishing of the powder spraying room through a water spraying fire extinguishing system, and can improve the recovery rate of dust through the water spraying dust fall in the two recovery devices and the device.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The utility model provides an explosion-proof dust removal recovery unit of powder spraying equipment, includes whirlwind recovery unit, whirlwind recovery unit's both sides are connected with filter core recovery unit and powder spraying room respectively, all be connected with the tuber pipe between whirlwind recovery unit and filter core recovery unit and the powder spraying room, filter core recovery unit includes the casing, hinge connection has sealing door on the casing, the lower extreme of casing is connected with out the tuber pipe, the bottom fixedly connected with ash collecting hopper of casing, the inner wall lower extreme of casing is connected with a plurality of mounting panels, the upside of mounting panel is equipped with the division board, division board and the inner wall fixed connection of casing, a plurality of equal joint has first filter core between casing and the division board, the upside of division board is equipped with a plurality of second filter cores, the one end and the inner wall joint of casing of second filter core, the cutting has the screw thread sealed hole with second filter core assorted on the casing, the other end and the tuber pipe connection of second filter core, the inner wall top of casing is connected with the tuber pipe and goes out the tuber pipe and communicates with each other, the inner wall top of casing is connected with ultraviolet lamp stoving lamp.
Further, be connected with water on the filter core recovery unit and spray fire extinguishing systems, water sprays fire extinguishing systems and includes the water supply pipe, the one end and the external water supply pipe of water supply pipe are connected, the other end of water supply pipe is connected with filter core and sprays pipeline and powder spray room and spray the pipeline, the filter core sprays the pipeline and is connected with the division board, the one end that the filter core sprays the pipeline and is located filter core recovery unit is connected with a plurality of evenly distributed's atomizer.
Further, the cyclone recovery device is made of Q235, the wall thickness of the cyclone recovery device is 2-2.5mm, and the outer diameter of the cyclone recovery device is 1-1.3m.
Further, the material of the filter element recovery device is Q235, and the thickness of the plate of the filter element recovery device is 2.5-3mm.
Further, the material of powder spraying room is the PP material, the interior connection of powder spraying room has two infrared flame detectors and sprays the shower nozzle, spray the shower nozzle and spray the powder spraying room and spray the pipe connection, conveniently spray the interior fire extinguishing of powder spraying room.
Further, a one-way explosion-proof valve is arranged between the cyclone recovery device and the filter element recovery device and is fixedly connected to the air pipe, and the one-way explosion-proof valve is used for preventing the air pipe from being broken.
Further, the lower ends of the cyclone recovery device and the filter element recovery device are connected with a pulse type powder return mechanism, the pulse type powder return mechanism comprises a first pinch valve, the lower end of the first pinch valve is connected with a high-pressure air pump, and the lower end of the high-pressure air pump is connected with a second pinch valve, so that the cyclone recovery device and the filter element recovery device can conveniently discharge powder regularly.
Further, the first filter core and the second filter core are all set to 6 groups, the first filter core and the second filter core all adopt 3566FR double-deck fire-retardant filter core, the inclination of album ash bucket is 65, the lower extreme of album ash bucket is connected with lock gas ash valve.
Furthermore, cyclone recovery unit, filter core recovery unit, water spray fire extinguishing systems and powder spraying room all are connected with control system, control system adopts the PLC control system who has the touch-sensitive screen.
Further, the lower end of the dust collecting hopper is connected with two pairs of grounding piles, a medium plate is connected between the grounding piles and the dust collecting hopper, and the grounding piles and the medium plate are made of galvanized flat steel, so that static electricity in the device is conveniently led into the ground.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme is through whirlwind recovery unit and filter core recovery unit to the air in the powder spray room and remove dust and retrieve, wherein used double-deck filtration in the filter core recovery unit, two-layer filtration space all uses the filter core to carry out physical filtration, is equipped with a plurality of atomizer in the lower floor filtration space, makes things convenient for the tiny dust caking whereabouts in the air current, sets up ultraviolet drying lamp in the upper filter space moreover, makes things convenient for the stoving of air current.
(2) In this scheme, the interior connection of powder spray room has the two infrared flame detector that link to each other with water spray fire extinguishing systems, can in time put out a fire when making the powder spray in the room catch fire, and the atomizer in the filter core recovery unit links to each other with water spray fire extinguishing systems, and water spray fire extinguishing systems can be for filter core recovery unit water supply also can be for the interior fire extinguishing spray water supply of powder spray room, and a system is two pivot water supplies, easily practices thrift installation space.
(3) The lower extreme of whirlwind recovery unit and filter core recovery unit all is connected with pulsed powder return mechanism, and pulsed powder return mechanism includes first pinch valve, and the lower extreme of first pinch valve is connected with highly-compressed air pump, and the lower extreme of highly-compressed air pump is connected with the second pinch valve, and above-mentioned structure can realize pulsed powder discharge, makes things convenient for the device to unload the automation control of powder, can reduce manual operation.
(4) The lower end of the dust collecting hopper is connected with two pairs of grounding piles, a medium plate is connected between the grounding piles and the dust collecting hopper, and the grounding piles and the medium plate are made of galvanized flat steel, so that static electricity on the device can be guided to the ground, and the device is not easy to damage due to the static electricity.
Drawings
FIG. 1 is a front perspective view of a cyclone recovery apparatus and a cartridge recovery apparatus of the present invention;
FIG. 2 is a rear perspective view of the cyclone recovery apparatus and the cartridge recovery apparatus of the present invention;
FIG. 3 is a cross-sectional view of the pulse type breading mechanism of FIG. 1 shown installed;
FIG. 4 is an exploded view of the cartridge recovery device of the present invention;
FIG. 5 is a perspective view of the cartridge recycling apparatus of the present invention with the door unsealed;
FIG. 6 is a schematic diagram of a water spray fire suppression system of the present invention;
FIG. 7 is a schematic diagram of the structure of the present invention;
Fig. 8 is a schematic circuit diagram of the present invention.
The device comprises a cyclone recovery device 1, a filter element recovery device 2, a shell 201, a mounting plate 202, a partition plate 203, a first filter element 204, a second filter element 205, an ultraviolet drying lamp 206, an ash collecting hopper 207, a water spray fire extinguishing system 3, a water supply pipeline 301, a filter element spray pipeline 302, a powder spray room spray pipeline 303, an atomization spray nozzle 304, a powder spray room 4, a double-infrared flame detector, a spray nozzle, a 5 air outlet pipe 6, a first pinch valve 7, a high-pressure air pump 8, a second pinch valve 9, a 10 unidirectional explosion-proof valve 11, a grounding pile and a 12 medium plate.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, based on the embodiments of the present invention, and all other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and include, for example, "connected to," whether fixedly connected to, detachably connected to, or integrally connected to, mechanically connected to, electrically connected to, directly connected to, indirectly connected to, and in communication with each other via an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
Referring to fig. 1, fig. 2 and fig. 3, an explosion-proof dust-removing recovery device of a powder spraying apparatus includes a cyclone recovery device 1, the cyclone recovery device 1 is in the prior art, the cyclone recovery device 1 is made of Q235, the wall thickness of the cyclone recovery device 1 is 2-2.5mm, the outer diameter of the cyclone recovery device 1 is 1-1.3m, two sides of the cyclone recovery device 1 are respectively connected with a filter core recovery device 2 and a powder spraying room 4, the size of the powder spraying room 4 is 6 x 1.4 x 2.3m, a conveying chain is connected in the powder spraying room 4, the length of the conveying chain is 110-114m, a drying channel is connected in the powder spraying room 4, the net size of the drying channel is 86 x 1.5 x 2.8m, the material of the powder spraying room 4 is PP, a dual infrared flame detector and a spray nozzle are connected in the powder spraying room 4, an air pipe 9 is respectively connected between the cyclone recovery device 1 and the cyclone recovery device 2 and the powder spraying room 4, a one-way valve is connected on the air pipe 9 between the powder spraying room 4 and the cyclone recovery device 1, the filter core recovery device 10 is fixedly connected between the powder spraying room 4 and the filter core recovery device 1 and the filter core recovery device 10 through the one-way valve 10, and the explosion-proof dust recovery device 10 is arranged in the air pipe 10.
The filter element recovery device 2 comprises a shell 201, a sealing door is connected on the shell 201 in a hinge way, the shell 201 is made of Q235, the thickness of a plate of the shell 201 is 2.5-3mm, the lower end of the shell 201 is connected with an air outlet pipe 5, a fan is connected on the air outlet pipe 5, the fan is an explosion-proof fan, blades of the fan are made of non-conductive materials, the bottom end of the shell 201 is fixedly connected with a dust collecting hopper 207, the inclination of the dust collecting hopper 207 is 65 degrees, the lower end of the dust collecting hopper 207 is connected with a gas locking and ash discharging valve, the lower end of the inner wall of the shell 201 is connected with a plurality of mounting plates 202, a partition plate 203 is arranged on the upper side of the mounting plates 202, after the shell 201 is sealed by the sealing door through the action of the partition plate 203, two filtering spaces are formed in the shell 201, the partition plate 203 is fixedly connected with the inner wall of the shell 201, a plurality of shells 201 and the partition plates 203 are all clamped with a first filter element 204, the two filtering spaces are communicated through a first filter element 204, a plurality of vent holes matched with the inner diameter of the first filter element 204 are cut on a partition plate 203, a plurality of second filter elements 205 are arranged on the upper side of the partition plate 203, one end of each second filter element 205 is clamped with the inner wall of a shell 201, a threaded sealing hole matched with each second filter element 205 is cut on the shell 201, each second filter element 205 is in threaded sealing connection with the corresponding threads, the other end of each second filter element 205 is connected with an air outlet pipe 5, a through hole matched with each second filter element 205 and communicated with the air outlet pipe 5 is cut on the inner wall of the shell 201, the upper filtering space in the shell 201 is communicated with the air outlet pipe 5 through each second filter element 205, the first filter element 204 and the second filter element 205 are respectively arranged into 6 groups, each first filter element 204 and each second filter element 205 adopts 3566FR double-layer flame-retardant filter elements, the top end of the inner wall of the shell 201 is connected with an ultraviolet drying lamp 206,
Through the baffle 203 in the filter core recovery unit, the filter core is divided into upper and lower double-deck filtration space in the filter core recovery unit, all use the filter core to carry out physical filtration in the two-layer filtration space, be equipped with a plurality of atomizer 304 in the lower floor filtration space, atomizer 304 blowout water smoke, the water smoke carries out the dust fall to the dust in the air current, make the dust caking in the air and whereabouts to album ash bucket 207 bottom, easily make the tiny dust caking whereabouts in the air current, also be difficult for adhering to on two kinds of filter cores after the dust caking, conveniently retrieve the dust in the air current, set up ultraviolet drying lamp 206 in the upper filter space, effect through ultraviolet drying lamp 206 is dried and disinfected to the air current, can make the exhaust air current clean health.
The filter element recovery device 2 is connected with a water spray fire extinguishing system 3, the water spray fire extinguishing system 3 comprises a water supply pipeline 301, the water supply pipeline 301 is connected with a water pressure detector, when the water pressure is lower than 2.0Kg, the water pressure detector sends a signal to a PLC control system, the system gives an alarm, meanwhile, the PLC system controls a fan, a powder spraying system and other devices to stop and cut off power, one end of the water supply pipeline 301 is connected with an external water supply pipe, the other end of the water supply pipeline 301 is connected with a filter element spray pipeline 302 and a powder spraying room spray pipeline 303, the filter element spray pipeline 302 is connected with a division board 203, one end of the filter element spray pipeline 302, which is positioned in the filter element recovery device 2, is connected with a plurality of evenly distributed atomizing spray heads 304, the spray heads are connected with the powder spraying room spray pipeline 303, when the flame detector detects flame signals in the powder spraying room, the signal is sent to the PLC control system, the spray heads spray the electromagnetic valve on the powder spraying room spray pipeline 303, the water, and the PLC system gives an acousto-optic alarm, and controls the fan, the powder spraying system and other devices to stop and cut off power.
The interior of the powder spraying room 4 is connected with a double-infrared flame detector connected with the water spraying fire extinguishing system 3, so that fire can be extinguished in time when fire is caught in the powder spraying room 4, the atomizing nozzle 304 in the filter element recovery device 2 is connected with the water spraying fire extinguishing system 3, the water spraying fire extinguishing system 3 can supply water for the atomizing nozzle 304 in the filter element recovery device 2 and also can supply water for the spraying nozzle in the powder spraying room 4, and one system supplies water for two devices, so that the installation space is easy to save.
The cyclone recovery device 1 and the filter element recovery device 2 are connected with a pulse type powder return mechanism at the lower ends thereof, the pulse type powder return mechanism comprises a first pinch valve 6, the lower end of the first pinch valve 6 is connected with a high-pressure air pump 7, the lower end of the high-pressure air pump 7 is connected with a second pinch valve 8, the pulse type powder return mechanism works on the principle that the first pinch valve 6 is opened, the high-pressure air pump 7 and the second pinch valve 8 are closed to enable dust in a dust collecting hopper 207 to fall down, then the first pinch valve 6, the high-pressure air pump 7 and the second pinch valve 8 are closed to enable the dust to be located between the two pinch valves, the first pinch valve 6, the high-pressure air pump 7 and the second pinch valve 8 are opened to convey the dust, finally, the first pinch valve 6, the high-pressure air pump 7 and the second pinch valve 8 are closed, then the steps are repeated to discharge the dust in the dust collecting hopper 207, the discharged dust is recovered through a recovery box and the like, the pulse type powder conveying can realize convenient automatic control of dust discharge of the dust collecting hopper 207, and the dust collecting hopper 207 is not excessively accumulated.
The lower end of the dust collecting hopper 207 is connected with two pairs of grounding piles 11, a medium plate 12 is connected between the grounding piles 11 and the dust collecting hopper 207, the grounding piles 11 and the medium plate 12 are made of galvanized flat steel, and the lowest point of the grounding piles 11 is buried in the earth ground. The static electricity in the filter element recovery device 2 is led into the ground through the conduction of the dielectric plate 12 and the grounding pile 11.
Cyclone recovery unit 1, filter core recovery unit 2, water sprays fire extinguishing systems 3 and spouts powder room 4 all and is connected with control system, and control system adopts the PLC control system who has the touch-sensitive screen, and the alarm information of all equipment all feeds back on the touch-sensitive screen, PLC control system and external power supply electric connection.
When the device is used, a user controls the PLC system to perform powder spraying of the powder spraying room 4, during operation, free dust in the powder spraying room 4 enters the cyclone recovery device 1 through the air outlet pipe 5 to carry out cyclone dust removal, then air flows into the filter element recovery device 2 through the air pipe 9, the air flows enter the device from the lower end of the filter element recovery device 2, then the air flows sequentially pass through two layers of filtering spaces, dust in the air flows is filtered by the first filter element 204 and the second filter element 205, the user can also use the PLC control system to control the electromagnetic valve on the core spraying pipeline 302, so that the atomizing nozzle 304 sprays water mist, finally the water mist is dried and disinfected by the ultraviolet drying lamp 206, and finally the water mist is discharged out of the filter element recovery device 2.
The above description is only of the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, any person skilled in the art should be able to make equivalent substitutions or modifications according to the technical solution and the modified concept thereof within the scope of the present invention.