CN110792582B - A peristaltic pump for low-pulse scenarios - Google Patents

Abstract

The invention relates to the technical field of fluid pumps and discloses a peristaltic pump for a low-pulse scene. This a peristaltic pump for low pulse scene, when the compression roller begins to loosen the hose, through compensating arm drive compensation bag water outlet end water pressure compensate, effectively reduce pulse amplitude, secondly compare under the more condition of current compression roller quantity, actuating arm pivoted resistance is littleer, reduce the operation power consumption, also it is also shorter when the wearing and tearing of hose are long simultaneously, the life of hose has been improved, effort between compression roller and the hose is less in addition, the atress inhomogeneity of its pivot is less relatively, simultaneously, because the compensation bag of not arranging one side addding of hose, the effort between compensation arm and the compensation bag is favorable to the atress of pivot even, the life of pivot has further been improved.

Description

Peristaltic pump for low-pulse scene

Technical Field

The invention relates to the technical field of fluid pumps, in particular to a peristaltic pump for a low-pulse scene.

Background

Referring to fig. 5, the pressure rollers of the peristaltic pump stop delivering liquid at the moment of loosening, so that pulse flow is generated, and the use of the peristaltic pump is limited, in order to suppress and reduce pulsation, the number of the pressure rollers is increased by a common means, on one hand, the closed liquid volume is reduced, and the pumping flow rate of the peristaltic pump is reduced, and on the other hand, as each pressure roller and the hose need a certain pressure, the more the number of the pressure rollers is, the larger the friction force generated by rotation of the driver is, the more energy consumption is increased, and meanwhile, the number of times of compression of the hose is increased, the material fatigue is accelerated, and the service life of the hose is reduced.

Furthermore, the number of the press rollers is large, the total acting force between the press rollers and the hoses is large, the hoses are usually distributed on one side, the acting force generated on the rotating shaft of the driver is also deviated to one side, the abrasion nonuniformity of the rotating shaft is increased, and the service life of the rotating shaft is shortened.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides a technical scheme of a peristaltic pump for a low-pulse scene, which has the advantages of low pulse and high efficiency and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a peristaltic pump for low pulse scene, includes the pump body and hose, the inner wall of the pump body is equipped with the hose, the middle part of the pump body is equipped with actuating arm and compensation arm, the terminal fixed mounting of actuating arm has the compression roller, one side that the pump body was not equipped with the hose is equipped with the compensation bag, the end of intaking and the play water end intercommunication with the end of intaking and the play water end of hose respectively of compensation bag, the end of intaking and the play water end of compensation bag all are equipped with the check valve and ensure the flow direction, the compensation arm begins to extrude the reduction of the play water end water pressure of compensation bag compensation hose in the twinkling of an eye at the compression roller unclamp the hose.

Preferably, actuating arm and compensation arm are the contained angle setting, the contained angle of actuating arm and compensation arm satisfies when the extrusion force between compression roller and the hose reduces compensation arm begin to extrude the compensation bag, compensation bag size satisfies when the extrusion force between another compression roller and the hose is the biggest, stops the effect between compensation arm and the compensation bag.

Preferably, the compensation arm presses the compensation capsule through magnetic force, magnets which are in repulsion force are respectively arranged at the positions where the compensation arm and the compensation capsule are close to each other, and driving pieces are arranged on the surface of the compensation capsule.

Preferably, the water outlet ends of the hose and the compensation bag are both communicated with the buffer tank.

Preferably, one side of the compensation bag is movably provided with an adjusting bolt.

The invention has the following beneficial effects:

1. this a peristaltic pump for low pulse scene, when the compression roller begins to loosen the hose, compensate through compensation arm drive compensation bag water outlet end water pressure, do not increase effective reduction pulse amplitude under extra compression roller and the extra load condition, secondly under keeping the state that the compression roller quantity is less, confined liquid volume is great, the output of peristaltic pump is great, on the other hand, compare under the more condition of current compression roller quantity, actuating arm pivoted resistance is littleer, reduce the operation power consumption, the length is also shorter when the wearing and tearing of hose simultaneously, the life of hose has been improved.

2. This a peristaltic pump for low pulse scene, on the one hand, the effort between compression roller and the hose is less, and the atress inhomogeneity of its pivot is less relatively, simultaneously, because the compensation bag that adds is not arranging one side of hose, the effort between compensation arm and the compensation bag is favorable to the atress of pivot even, has further improved the life of pivot.

Drawings

FIG. 1 is a schematic illustration of the present invention in normal operation;

FIG. 2 is a schematic view illustrating the hydraulic pressure compensation according to the present invention;

FIG. 3 is a schematic view of the present invention after completion of water pressure compensation;

FIG. 4 is a schematic view of a surge tank of the present invention;

fig. 5 is a schematic structural view of a conventional peristaltic pump.

In the figure: 1. a pump body; 2. a hose; 3. a drive arm; 4. a compression roller; 5. a compensation arm; 6. a compensation bladder; 7. a driving plate; 8. a three-way valve; 9. a buffer tank; 10. and adjusting the bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a peristaltic pump for a low pulse scene includes a pump body 1 and ahose 2, thehose 2 is disposed on an inner wall of the pump body 1, adriving arm 3 and acompensation arm 5 are disposed in a middle portion of the pump body 1, apressing roller 4 is fixedly mounted at a tail end of thedriving arm 3, thedriving arm 3 drives thepressing roller 4 to move to squeeze thehose 2, acompensation bag 6 is disposed on a side of the pump body 1 where thehose 2 is not disposed, a water inlet end and a water outlet end of thecompensation bag 6 are respectively communicated with a water inlet end and a water outlet end of thehose 2, a check valve is disposed at both the water inlet end and the water outlet end of thecompensation bag 6 to ensure a flow direction, thecompensation arm 5 starts to squeeze thecompensation bag 6 at the moment thehose 2 is released by thepressing roller 4 to reduce a water pressure at the water outlet end of thecompensation hose 2, so as to maintain a stable liquid output pressure and reduce a pulse amplitude.

Wherein, actuatingarm 3 andcompensation arm 5 are the contained angle setting, and the contained angle of actuatingarm 3 andcompensation arm 5 satisfiescompensation arm 5 and begins to extrudecompensation bag 6 when the extrusion force betweencompression roller 4 and thehose 2 reduces, andcompensation bag 6 size satisfies when the extrusion force between anothercompression roller 4 and thehose 2 is the biggest, stops the effect betweencompensation arm 5 and thecompensation bag 6.

Thecompensation arm 5 extrudes thecompensation capsule 6 through magnetic force, magnets which are represented by repulsive force are respectively arranged at the positions where thecompensation arm 5 and thecompensation capsule 6 are close to each other, adriving sheet 7 is arranged on the surface of thecompensation capsule 6, when thecompensation arm 5 is close to each other, thedriving sheet 7 is driven to further extrude thecompensation capsule 6, and the service life of thecompensation capsule 6 is prolonged while resistance is reduced in a non-contact mode.

Wherein, the play water end ofhose 2 andcompensation bag 6 all communicatesbuffer tank 9, is full of gas in thebuffer tank 9, and when pressure was too big, the extrusion is gaseous, but when pressure was little, the gas can compensate water pressure, makescompensation 6 more gentle, further eliminates the pulse, andhose 2 andcompensation bag 6's the end of intaking pass through three-way valve 8 and connect.

Wherein, one side of thecompensation bag 6 is movably provided with an adjustingbolt 10, and the adjustingbolt 10 is screwed in or out to extrude thecompensation bag 6 to control the water quantity in thecompensation bag 6 so as to finely adjust the compensation quantity of thecompensation bag 6.

The working principle and the using process of the invention are as follows:

when the peristaltic pump runs, thedriving arm 3 and thecompensation arm 5 keep synchronous rotation, thedriving arm 3 rotates to drive thepressing rollers 4 to rotate, the twopressing rollers 4 sequentially extrude thehose 2 to drive the flowing of liquid, when thepressing rollers 4 driving the flowing of the liquid can release thehose 2, thecompensation arm 5 and thedriving sheet 7 begin to interact, thedriving sheet 7 extrudes thecompensation bag 6, the liquid flows into thebuffer tank 9 from thecompensation bag 6 to compensate the outlet water pressure, thedriving arm 3 and thecompensation arm 5 continue to rotate, the extrusion action of the otherpressing roller 4 and thehose 2 is maximum, the acting force between thecompensation arm 5 and thedriving sheet 7 disappears, and the pulse generated at the action interval of the twopressing rollers 4 is reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

Translated fromChinese

1.一种用于低脉冲场景的蠕动泵，包括泵体(1)和软管(2)，所述泵体(1)的内壁设有软管(2)，其特征在于：所述泵体(1)的中部设有驱动臂(3)和补偿臂(5)，所述驱动臂(3)的末端固定安装有压辊(4)，所述泵体(1)未设有软管(2)的一侧设有补偿囊(6)，所述补偿囊(6)的进水端和出水端分别和软管(2)的进水端和出水端连通，所述补偿囊(6)的进水端和出水端均设有单向阀确保流向，所述补偿臂(5)在压辊(4)松开软管(2)的瞬间开始挤压补偿囊(6)补偿软管(2)的出水端水压的减少。1. A peristaltic pump for a low-pulse scenario, comprising a pump body (1) and a hose (2), the inner wall of the pump body (1) is provided with a hose (2), characterized in that: the pump The middle of the body (1) is provided with a drive arm (3) and a compensation arm (5), the end of the drive arm (3) is fixedly installed with a pressure roller (4), and the pump body (1) is not provided with a hose One side of (2) is provided with a compensation bag (6), the water inlet end and the water outlet end of the compensation bag (6) are respectively connected with the water inlet end and the water outlet end of the hose (2), and the compensation bag (6) The water inlet and outlet ends of the ) are provided with a one-way valve to ensure the flow direction, and the compensation arm (5) starts to squeeze the compensation bladder (6) at the moment when the pressure roller (4) releases the hose (2). (2) The reduction of the water pressure at the water outlet.2.根据权利要求1所述的一种用于低脉冲场景的蠕动泵，其特征在于：所述驱动臂(3)和补偿臂(5)呈夹角设置，所述驱动臂(3)和补偿臂(5)的夹角满足压辊(4)和软管(2)之间的挤压力减少的同时补偿臂(5)开始挤压补偿囊(6)，所述补偿囊(6)大小满足当另一个压辊(4)和软管(2)之间的挤压力最大时，补偿臂(5)和补偿囊(6)之间停止作用。2. A peristaltic pump for a low-pulse scenario according to claim 1, characterized in that: the drive arm (3) and the compensation arm (5) are arranged at an included angle, and the drive arm (3) and the compensation arm (5) are arranged at an included angle. The included angle of the compensation arm (5) satisfies the reduction of the pressing force between the pressing roller (4) and the hose (2) and at the same time the compensation arm (5) starts to squeeze the compensation bag (6), the compensation bag (6) The size is such that when the pressing force between the other pressing roller (4) and the hose (2) is the maximum, the action between the compensation arm (5) and the compensation bag (6) stops.3.根据权利要求1所述的一种用于低脉冲场景的蠕动泵，其特征在于：所述补偿臂(5)通过磁力作用挤压补偿囊(6)，所述补偿臂(5)和补偿囊(6)相互接近的位置各自设有表现为斥力的磁体，所述补偿囊(6)的表面设有驱动片(7)。3. A peristaltic pump for a low-pulse scenario according to claim 1, characterized in that: the compensation arm (5) squeezes the compensation capsule (6) through a magnetic force, and the compensation arm (5) and The mutually approaching positions of the compensation capsules (6) are respectively provided with magnets that exhibit repulsive force, and the surfaces of the compensation capsules (6) are provided with driving pieces (7).4.根据权利要求1所述的一种用于低脉冲场景的蠕动泵，其特征在于：所述软管(2)和补偿囊(6)的出水端均连通缓冲罐(9)。4. A peristaltic pump for a low-pulse scenario according to claim 1, wherein the hose (2) and the water outlet end of the compensation bag (6) are both connected to a buffer tank (9).5.根据权利要求1所述的一种用于低脉冲场景的蠕动泵，其特征在于：所述补偿囊(6)的一侧活动安装有调整螺栓(10)。5. A peristaltic pump for a low-pulse scenario according to claim 1, wherein an adjustment bolt (10) is movably installed on one side of the compensation bag (6).

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