CN215486513U - Extrusion type peristaltic pump - Google Patents

Abstract

The embodiment of the specification discloses an extrusion formula peristaltic pump, extrusion formula peristaltic pump includes: the hose cutting device comprises a body, a first transmission part, a second transmission part, an extrusion part, a stop block and a limiting plate, wherein the limiting plate is arranged on the upper end surface of the body and is fixedly connected with the body, and a hose is placed below the limiting plate; the extrusion piece is driven by the first transmission component to do reciprocating motion and is used for pressing the hose; the stopping block is driven by the second transmission component to do reciprocating motion and used for stopping the liquid inlet end or the liquid outlet end of the hose, and the first transmission component and the second transmission component are driven by different power devices. The extruded article drives through different power device with ending the piece in this scheme, can require control power device to adjust the transmission angle of first drive disk assembly according to the flow to the extrusion height of adjustment extruded article to the hose, thereby realize the function of flow adjustable.

Description

Extrusion type peristaltic pump

Technical Field

The application relates to the technical field of peristaltic pumps, in particular to an extrusion type peristaltic pump.

Background

Peristaltic pumps, also known as hose pumps, are used to create a flow of liquid within an elastic tubular conduit for liquid delivery. The existing peristaltic pump is generally in a rotary type peristaltic manner, and has the problems of large abrasion to a conduit and easy pipeline deviation after long-time use.

Disclosure of Invention

In view of this, the embodiment of the present application provides an extrusion type peristaltic pump, which is used to prolong the service life of a hose and control the flow rate of the peristaltic pump.

In order to solve the above technical problem, the embodiments of the present specification are implemented as follows:

the embodiment of this specification provides an extrusion formula peristaltic pump, includes: the hose cutting device comprises a body, a first transmission part, a second transmission part, an extrusion part, a stop block and a limiting plate, wherein the limiting plate is arranged on the upper end face of the body and is fixedly connected with the body, and a hose is placed below the limiting plate;

the extrusion piece is driven by the first transmission component to do reciprocating motion and is used for pressing the hose; the stopping block is driven by the second transmission component to do reciprocating motion and used for stopping the liquid inlet end or the liquid outlet end of the hose, and the first transmission component and the second transmission component are driven by different power devices.

Optionally, the stop block comprises a liquid inlet stop block and a liquid discharge stop block, and the liquid inlet stop block and the liquid discharge stop block are arranged on two sides of the extrusion piece.

Optionally, the pressing member is driven by the first transmission member to reciprocate linearly, and the stop block is driven by the second transmission member to reciprocate linearly.

Optionally, the first transmission component and the second transmission component are eccentric transmission mechanisms or linear transmission mechanisms.

Optionally, the first transmission component includes a first main shaft and a first cam fixedly disposed on the first main shaft, the second transmission component includes a second main shaft and a second cam and a third cam fixedly disposed on the second main shaft at intervals, phase angles corresponding to the highest peaks of the second cam and the third cam are different, the first main shaft and the second main shaft are disposed in parallel along a liquid transmission direction, the first cam is located between the second cam and the third cam along the liquid transmission direction, phase angles corresponding to the highest peaks of the first cam and the second cam are different, and phase angles corresponding to the highest peaks of the first cam and the third cam are different.

Optionally, when the second spindle is disposed close to the hose, a first transfer block is disposed between the first cam and the extrusion member, the second spindle is located above the first spindle, and the first transfer block penetrates through the second spindle.

Optionally, when the first main shaft is close to the hose setting, the second cam with set up the second switching piece between the feed liquor stop block, the third cam with set up the third switching piece between the flowing back stop block, first main shaft is located the top of second main shaft, the second switching piece with the third switching piece passes first main shaft.

Optionally, the first cam is used for driving the extrusion piece is linear reciprocating motion, the second cam is used for driving the liquid inlet stopping block is linear reciprocating motion, the third cam is used for driving the liquid discharge stopping block is linear reciprocating motion, and the liquid inlet stopping block and the liquid discharge stopping block alternately keep the hose to be compressed.

Optionally, the first cam, the second cam or the third cam are eccentric wheels, and the extrusion piece is a pressing block.

Optionally, the extruded part sets up inside the body, the inside briquetting activity groove that sets up of body, the notch end in briquetting activity groove sets up the hose fixed part, the notch end detachable fixed connection in briquetting activity groove the limiting plate.

Optionally, the hose fixing portion is a groove on the body or a buckle detachably disposed on the body.

Optionally, a plurality of sliding rails are arranged on the inner side of the pressing block movable groove along the moving direction of the extrusion piece.

Optionally, the liquid inlet stopping block and the liquid discharge stopping block are clamping blocks.

Optionally, the limiting plate is close to the end face of the hose, and an elastic material is arranged at a position corresponding to the clamping block.

Optionally, the extrusion part comprises two or more sub-pressing blocks, or the liquid inlet stopping block comprises two or more sub-stopping blocks, or the liquid discharge stopping block comprises two or more sub-stopping blocks.

Optionally, the limiting plate is a plurality of, corresponds respectively the feed liquor cuts off piece, extruded piece and flowing back and cuts off the piece setting.

Optionally, the pressing member is driven by the first transmission member to make swinging reciprocating motion.

Optionally, the first transmission component is a cam, the extrusion piece is a swing rod, one end of the swing rod is hinged to the body, the other end of the swing rod is driven by the cam to swing and reciprocate, and the hose is periodically extruded.

Optionally, the first transmission part and the extrusion part are rod pieces, the rod pieces and the extrusion part form a link mechanism, one end of the extrusion part is driven by the first transmission part to do swinging reciprocating motion, and the hose is periodically extruded.

Optionally, springs are arranged between the limiting plate and the extrusion piece and between the limiting plate and the stopping block, and the springs are in a compressed state.

Optionally, the squeeze peristaltic pump further comprises: and the sliding groove block is fixedly connected with the body, and a sliding groove for accommodating the limiting plate is formed between the sliding groove block and the body.

Optionally, the chute block does not obscure the hose fixing portion.

Optionally, the number of the sliding groove blocks is 2, and the sliding groove blocks are L-shaped.

The method for controlling the flow of the extrusion type peristaltic pump provided by the embodiment of the specification comprises the following steps:

acquiring the liquid amount to be filled and the maximum filling liquid amount of the extrusion type peristaltic pump;

determining a first rotation parameter of a first transmission component according to the liquid amount to be filled and the maximum filling liquid amount;

and controlling the first transmission component to rotate according to the first rotation parameter to finish the filling of the liquid amount to be filled at one time.

Optionally, the first transmission component is a cam, and the first rotation parameter is a push section motion angle of the cam; the push stroke section motion angle of the cam is in a correlation relation with the filling amount of the extrusion type peristaltic pump, and the correlation relation is determined by the shape of the cam;

determining a first rotation parameter of a first transmission component according to the liquid amount to be filled and the maximum filling liquid amount, specifically comprising:

and searching the push section motion angle of the cam corresponding to the liquid amount to be filled from the correlation.

Optionally, the movement angle of the push stroke section of the cam is in a linear relation with the filling amount of the extrusion type peristaltic pump;

determining a first rotation parameter of a first transmission component according to the liquid amount to be filled and the maximum filling liquid amount, specifically comprising:

determining the proportional relation between the liquid amount to be filled and the maximum filling liquid amount;

and determining the push stroke section motion angle to be rotated of the cam according to the push stroke section motion angle of the cam and the proportional relation.

Optionally, the method further includes:

determining a second rotation parameter of the first transmission component according to the first rotation parameter, wherein the first rotation parameter comprises a time parameter;

and controlling the second transmission component to rotate according to the second rotation parameter.

Optionally, the determining a second rotation parameter of the first transmission component according to the first rotation parameter specifically includes:

determining the rotation time of the first main shaft according to the first rotation parameter;

and determining the rotation time of the second main shaft according to the rotation time of the first main shaft.

The embodiment of the specification adopts at least one technical scheme which can achieve the following beneficial effects:

the hose is extruded by the extrusion part, so that the friction force between the hose and the extrusion part is reduced, the fatigue damage of the hose is reduced, and the service life of the hose is prolonged.

The extrusion piece and the stop block are driven by different power devices, and the power device can be controlled according to the flow requirement to adjust the transmission angle of the first transmission part, so that the extrusion height of the extrusion piece on the hose is adjusted, and the function of adjusting the flow is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of an embodiment of an extrusion type peristaltic pump provided by an embodiment of the present disclosure;

FIG. 2 is a left side view of the first embodiment shown in FIG. 1;

FIG. 3 is a right side view of the first embodiment shown in FIG. 1;

FIG. 4 is a first schematic diagram illustrating an internal structure of the first embodiment shown in FIG. 1;

FIG. 5 is a second schematic diagram illustrating an internal structure of the first embodiment shown in FIG. 1;

FIG. 6 is a schematic structural view of a transmission member and a pressing unit of a third embodiment of the squeeze peristaltic pump;

fig. 7 is a schematic structural view of a transmission member and a pressing unit of a fourth embodiment of the squeeze peristaltic pump;

fig. 8 is a schematic flow chart of a flow control method for an extrusion type peristaltic pump provided in an embodiment of the present disclosure.

The reference numerals are specified as follows: 1. a body; 101. a movable groove of a pressing block; 102. a hose fixing portion; 103. A slide rail; 104. a limiting channel; 2. a limiting plate; 3. a liquid inlet stopping block; 4. a working pressing block; 5. a liquid discharge stopping block; 6. camshaft number 1; 601. a first main shaft; 602. a liquid inlet stopping cam; 603. a drainage stop cam; 7. camshaft number 2; 701. a second main shaft; 702. an extrusion cam; 8. a motor No. 1; 9. a No. 2 motor; 10. a transfer block; 11. a chute block; 12. a spring; 1201. a first spring groove; 1202. a second spring groove; 13. a first connecting rod; 14. a second connecting rod; 15. a slider; 16. a swing lever; 17. a cam; 18. flexible pipe

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, 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 application.

An embodiment of the present specification provides an extrusion type peristaltic pump, including: the hose cutting device comprises a body, a first transmission part, a second transmission part, an extrusion part, a stop block and a limiting plate, wherein the limiting plate is arranged on the upper end face of the body and is fixedly connected with the body, and a hose is placed below the limiting plate;

the extrusion piece is driven by the first transmission component to do reciprocating motion and is used for pressing the hose; the stopping block is driven by the second transmission component to do reciprocating motion and used for stopping the liquid inlet end or the liquid outlet end of the hose, and the first transmission component and the second transmission component are driven by different power devices.

It should be noted that the reciprocating motion is not limited in particular, and may be a linear reciprocating motion or a swinging reciprocating motion, as long as the hose can be pressed and the fluid can be transferred.

Optionally, the extrusion part is driven by the first transmission part to do linear reciprocating motion or swinging reciprocating motion, and the stop block is driven by the second transmission part to do linear reciprocating motion. The stopping block does linear reciprocating motion, which is more beneficial to effectively stopping the hose.

The body is an integral part of the extrusion type peristaltic pump, other structures are all installed on the basis of the body, and the body can also be called a shell, a rack and other names. The body can be a shell with a hollow interior, the top of the shell can be uncovered, and the top and the bottom of the shell can be uncovered. In some embodiments, the transmission member, the extrusion, and the stop block may be disposed inside the body or outside the body. The extrusion piece and the stop block can correspond to one body or a plurality of bodies. Similarly, the number of the limiting plates can be one, two or more.

An expression is understood to mean a part, component or element or the like which can press the hose. For example, the extrusion may be a compact, a rod, or the like. Compared with the traditional rotary peristaltic pump, the axial rubbing of the hose is reduced through the interval action of the extrusion parts, so that the axial excessive friction of the hose is reduced, the service life of the hose is prolonged, and the transmission precision is improved. The extrusion may be a single component or may be an integral multiple component.

The limiting plate is used for limiting the hose and can also be called as a fixing block, a fixing plate, a supporting plate or an upper pressing block and the like, so that the hose is fixed between the limiting plate and the extrusion piece or the stopping block, wherein the limiting plate has a function similar to that of the upper pressing block of the rotary peristaltic pump. Wherein, the limiting plate can be a plurality of, corresponds the extruded piece respectively and ends the piece setting.

The limiting plate is fixedly connected with the body and comprises a detachable connection part and a non-detachable connection part. The detachable connection may include a hinge, a threaded connection, etc.

The stopping block is used for stopping the liquid inlet end or the liquid outlet end of the hose, and therefore the stopping block can comprise a liquid inlet stopping block and a liquid discharge stopping block which are arranged on two sides of the extrusion piece. The liquid inlet stopping block and the liquid discharge stopping block can be arranged independently or can form a whole. The liquid inlet stopping block and the liquid discharge stopping block can be driven by one transmission part or two transmission parts, and can be driven by one motor for convenience and volume reduction.

It should be noted that the stop block herein may be a mechanical component (such as a pressure block) or an electronic component (such as an electronic valve).

Since an effective shut-off of the hose is required, the configuration of the shut-off block can be selected according to this requirement. For example, a clamping block may be employed.

The first transmission part is used for driving the extrusion part to press the hose, wherein the transmission part can be an eccentric transmission mechanism such as a cam, a connecting rod mechanism, a linear transmission mechanism and the like. The transmission member and the pressing unit may be in point contact, line contact, and surface contact.

The second transmission component is used for driving the stopping block to stop the liquid inlet end and the liquid discharge end of the hose. Similarly, the second transmission component can also be an eccentric transmission mechanism such as a cam, a link mechanism, a linear transmission mechanism and the like. For the liquid inlet stopping block and the liquid outlet stopping block, the second transmission part can be of an integrated structure or a split structure. I.e. the second transmission member may comprise two separate structures or may comprise two structures associated with each other. The first transmission component and the second transmission component can adopt the same structure or different structures, and can be selected according to actual scenes and area limitations.

The first transmission part and the second transmission part are driven by different power devices, and by adopting the design, the transmission angle of the first transmission part can be adjusted by controlling the power devices according to the flow requirement, so that the extrusion height of the hose by the extrusion part can be adjusted, and the function of adjusting the flow can be realized.

It should be noted that, in this scheme, a single hose may be provided to form a single-channel peristaltic pump, and two or more hoses may be provided to form a dual-channel or multi-channel peristaltic pump.

In a preferred embodiment, the first transmission member and the second transmission member are a spindle plus eccentric member. An eccentric component is understood to mean a component whose geometric center and center of mass (center of gravity) are not at the same point. An eccentric drive mechanism may include an eccentric, which is primarily a circular wheel whose center is not coincident with the center of rotation, and a cam, which may be a mechanical rotary or sliding member (e.g., a wheel or a projection of a wheel) that imparts motion to the wheel against its edge. The cam follower can obtain any expected motion rule according to the cam profile, and the structure is simple and compact. An eccentric may be considered one type of cam.

In one embodiment, the first transmission component includes a first main shaft and a first cam fixedly arranged on the first main shaft, the second transmission component includes a second main shaft and a second cam and a third cam fixedly arranged on the second main shaft at intervals, the phase angles corresponding to the highest peaks of the second cam and the third cam are different, the first main shaft and the second main shaft are longitudinally arranged in parallel along the liquid transmission direction, the first cam is located between the second cam and the third cam along the liquid transmission direction, the phase angles corresponding to the highest peaks of the first cam and the second cam are different, and the phase angles corresponding to the highest peaks of the first cam and the third cam are different. The first cam is used for driving the extrusion piece to do linear reciprocating motion, the second cam is used for driving the liquid inlet stopping block to do linear reciprocating motion, the third cam is used for driving the liquid discharging stopping block to do linear reciprocating motion, and the liquid inlet stopping block and the liquid discharging stopping block alternately keep the hose to be compressed.

In these embodiments, the eccentric transmission mechanisms are all implemented by adopting a cam structure, and are used for driving different pressing units together to realize different functions. The positions of the highest peaks of the cams are different, and it can be understood that the central angle positions corresponding to the positions of the highest peaks of the cams are different. For example, when the second cam is in a cut-off state for the hose, at this time, the third cam cannot be in a cut-off state for the hose, that is, the phase angle corresponding to the highest peak of the second cam is different from the phase angle corresponding to the highest peak of the second cam.

The phase angle can be understood as that the origin of the X-Y two-dimensional coordinate center is placed at the center of the cam main shaft, the included angle between the positive direction of the X-axis and the motion direction of the cam follower is the phase angle, and the relative rotation angle of the cam profile relative to the key groove of the cam shaft is used when the origin of motion is solved.

The phase angles corresponding to the highest peaks of the three cams are different, so that when the pressing unit is driven to press the hose, functions of several structures of the pressing unit can be distinguished, and different processes such as liquid inlet, transmission, liquid drainage and the like can be continuously realized together.

In the above embodiments, the first cam, the second cam or the third cam may all be eccentrics, or may be partially eccentrics, and the extrusion may select the pressing block.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Example one

Fig. 1-5 are schematic structural views of an embodiment of an extrusion type peristaltic pump. As shown in fig. 1 to 5, the squeeze peristaltic pump includes: the method comprises the following steps: body 1, limiting plate 2, feed liquor stop block 3, work briquetting 4, flowing back stop block 5, 1 camshaft 6, 2 camshaft 7, 1 motor 8 and 2 motor 9, limiting plate 2 sets up at the up end of body 1, and can dismantle fixed connection with body 1. And hoses are arranged among the limiting plate 2, the liquid inlet stopping block 3, the working pressing block 4 and the liquid discharge stopping block 5.

Wherein, set up briquetting movable groove 101 in the body 1, wherein, feed liquor stop block 3, work briquetting 4, flowing back stop block 5, No. 1 camshaft 6 and No. 2 camshaft 7 set up in briquetting movable groove 101. The liquid inlet stopping block 3 and the liquid discharge stopping block 5 are both arranged at the end part of the pressing block movable groove 101, the liquid inlet stopping block 3 is close to the liquid inlet direction of the hose, the liquid discharge stopping block 5 is close to the liquid outlet direction of the hose, and the working pressing block 4 is arranged between the liquid inlet stopping block 3 and the liquid discharge stopping block 5.

The working pressing block 4 is driven by the No. 2 cam shaft to do linear reciprocating motion and is used for pressing the hose; the liquid inlet stopping block 3 and the liquid discharge stopping block 5 are driven by the No. 1 cam shaft 6 to do linear reciprocating motion and used for stopping the liquid inlet end or the liquid outlet end of the hose. No. 1 motor 8 provides power for No. 1 camshaft 6, and No. 2 motor 9 provides power device for No. 2 camshaft 7.

No. 2 motor 9 of during operation realizes the propulsion speed independent control of work briquetting through the independent control to No. 2 camshaft, has realized that velocity of flow and liquid measure are adjustable.

In addition, through the linkage of controlling No. 1 motor and No. 2 motor, can in time control flowing back process and end, avoid unnecessary liquid measure to discharge.

Through No. 2 motor to extrusion cam independent control, can realize once holding liquid and divide liquid many times, improve work efficiency.

As shown in fig. 3, the No. 1 cam shaft 6 is located above the No. 2 cam shaft 7, the No. 1 cam shaft 6 comprises a first main shaft 601 and a liquid inlet stop cam 602 and a liquid discharge stop cam 603 which are fixed at intervals, wherein the No. 1 cam shaft 6 is provided with the liquid inlet stop cam 602 and the liquid discharge stop cam 603 along the liquid transmission direction, and the liquid inlet stop cam 602 and the liquid discharge stop cam 603 have different far rest angle positions, so that the liquid inlet stop cam 602 and the liquid discharge stop cam 603 cannot simultaneously push the liquid inlet stop block 3 and the liquid discharge stop block 5 to close the hose, and the liquid inlet stop cam and the liquid discharge stop cam can be eccentric wheels with different phase angles.

The No. 2 cam shaft 7 comprises a squeezing cam 702 arranged on the second main shaft 701, and the squeezing cam 702 is correspondingly arranged between the liquid inlet stopping cam 602 and the liquid discharge stopping cam 603. The liquid inlet stop cam 602 corresponds to the liquid inlet stop block 3, the liquid discharge stop cam 603 corresponds to the liquid discharge stop block 5, and the extrusion cam 702 corresponds to the working pressure block 4.

The second main shaft 701 and the first main shaft 601 are longitudinally arranged in parallel along the liquid transmission direction, the extrusion cam 702 is located between the liquid inlet stop cam 602 and the liquid discharge stop cam 603 along the liquid transmission direction, the phase angles of the extrusion cam 702 corresponding to the highest peaks of the liquid inlet stop cam 602 are different, and the phase angles of the extrusion cam 702 corresponding to the highest peaks of the liquid discharge stop cam 603 are different. The extrusion cam 702 is used for driving the working pressing block 4 to do linear reciprocating motion, the liquid inlet stop cam 602 is used for driving the liquid inlet stop block 3 to do linear reciprocating motion, the liquid discharge stop cam 603 is used for driving the liquid discharge stop block 5 to do linear reciprocating motion, and the liquid inlet stop block 3 and the liquid discharge stop block 5 alternately keep compressing the hose.

A switching block 10 is further arranged between the extrusion cam 702 and the working pressing block 4, and the switching block 10 crosses the first main shaft 601 and is in pressure contact with the working pressing block 4 for power transmission between the extrusion cam 702 and the working pressing block 4. The action sequence of the liquid inlet stopping block 3, the working pressing block 4 and the liquid discharge stopping block 5 is different due to different phase angles of adjacent cams.

The arrangement of the transfer block 10 can avoid the interference between the No. 2 camshaft 7 and the No. 1 camshaft 6, and the thrust of the extrusion cam 702 is transmitted to the working pressing block 4.

The inner side of the pressing block movable groove 101 is provided with a limiting groove channel 104, the switching block 10 can be slidably arranged in the space of the adjacent limiting groove channel 104, and the switching block 10 can slide up and down along the limiting groove channel 104 to avoid dislocation movement.

The liquid inlet stop cam 602, the extrusion cam 702 and the liquid discharge stop cam 603 are all of basic cam structures and comprise a push stroke section, a far rest section, a return stroke section and an initial section, in the rotation process of the cam shaft, the push stroke section pushes the pressing block upwards to extrude the hose, the far rest section keeps the pressing block at the extrusion height, when the cam moves to the return stroke section, the pressing block moves downwards to loosen the hose due to the gravity effect of the pressing block and resets to the initial section along the return stroke section, and the hose resetting is completed. The extrusion and resetting of the hose are completed through the periodical motion of the cam.

The liquid inlet stop cam and the liquid discharge stop cam are related in phase angle, and the far rest sections of the liquid inlet stop cam and the liquid discharge stop cam are mutually combined in the circumferential range, so that the cam shaft is provided with a pressing block at any angle position to press the hose at the highest position, and the hose is kept in a closed flow-cutoff state.

The initial section circular arc diameters of the liquid inlet stop cam, the extrusion cam and the liquid discharge stop cam are the same, so that the hoses are kept in the same elastic state at the reset positions, the cams start to extrude (such as 80% of the height of the hoses) from the elastic deformation of the hoses, namely, the pressing block has certain extrusion force on the hoses when in the initial section position of the cams, and the hoses of the extrusion type peristaltic pump with controllable flow always keep a good elastic recovery state in the working process.

The far rest sections of the liquid inlet stop cam and the liquid discharge stop cam are the same, and the distance between the stop block and the limiting plate in the far rest section is smaller than 2 times of the wall thickness of the hose, so that the hose generates overpressure, the hose is further ensured to be tightly sealed in the far rest section of the stop block, and liquid in the pipeline is prevented from flowing back. The diameter of the far rest section of the extrusion cam is smaller than that of the far rest section of the stop cam, the distance between the working pressing block and the limiting plate in the far rest section of the extrusion cam is larger than 2 times of the wall thickness of the hose, excessive extrusion of the hose is avoided, the elasticity and the restoring force of the hose at the position of the working pressing block are improved, the fatigue damage of the working pressing block area is reduced, the moving capacity of the hose is improved, and the service life of the hose is prolonged.

The body 1 comprises a pressing block movable groove 101 arranged in a hose extrusion area, a hose fixing part 102 is arranged at the end part of the pressing block movable groove 101, and the hose fixing part 102 is used for clamping and fixing a hose; limiting plate 2 is connected to briquetting activity groove 101 notch terminal surface detachable, and limiting plate 2 covers on hose fixed part 102, can assist hose fixed part 102 centre gripping fixed hose to provide the extruded bearing surface for the work briquetting. In this embodiment, the hose fixing portion 102 is a groove on the body 1 into which both ends of the hose are inserted. This structure is relatively simple and does not affect the mounting of the limit plate 2.

The liquid inlet stopping block 3, the working pressing block 4 and the liquid discharging stopping block 5 are arranged in the pressing block movable groove 101 in a close mode, so that the liquid volume between the sliding blocks is fixed, the discharge flow is fixed, and the liquid flow precision adjustment is facilitated.

In other embodiments, the body 1 may be provided with a snap to clamp the hose, which is not specifically described herein.

The inner side of the pressing block movable groove 101 is also provided with a plurality of sliding rails 103 along the moving direction of the pressing block, and the pressing block moves along the sliding rails 103 to reduce the friction force of the movement of the pressing block.

Still fixedly connected with spout piece 11 above the briquetting activity groove, form the spout that holds limiting plate 2 between spout piece 11 and the body 1. The limiting plate 2 can slide into the gap between the chute block 11 and the body 1 along one side of the chute and is fixedly connected with the body 1 through a screw. Wherein, the number of the sliding groove blocks 11 is 2, and the sliding groove blocks 11 are L-shaped. The two chute blocks 11 are symmetrically arranged, do not contact with each other, and do not shield the hose fixing portion 102.

A spring 12 is arranged between the limiting plate 2 and the pressing block (the liquid inlet stopping block 3, the working pressing block 4 and the liquid discharge stopping block 5), and the spring 12 is always in a compressed state. One side of the pressing face of the pressing block is provided with a first spring groove 1201, a second spring groove 1202 corresponding to the first spring groove 1201 is arranged on the sliding groove block 11, and the spring 12 is arranged between the first spring groove 1201 and the second spring groove 1202, so that the pressing block keeps restoring force, and the problem that the pressing block is difficult to reset due to insufficient elasticity of the hose in the working process of the peristaltic pump is solved. In addition, the slideway used for accommodating the support plate is arranged on the slideway block, and the support plate.

In order to be more convenient for the liquid inlet stopping block 3 and the liquid discharging stopping block 5 to clamp the hose, the liquid inlet stopping block 3 and the liquid discharging stopping block 5 are designed into clamping blocks, namely, the top of the clamping blocks is provided with a certain oblique angle, the extrusion area of the stopping blocks is reduced, the pressure intensity of the clamping blocks on the hose is increased, the pressure action effect is improved, the stopping blocks can rapidly compress and close the hose, and the flow cutoff is realized.

In addition, an elastic material can be arranged on the lower end face (the end face close to the hose) of the limiting plate and in the position corresponding to the clamping block, so that the hose can be clamped after the clamping block is abraded.

This embodiment has improved the integrated level of push type peristaltic pump, has reduced structure complexity to the work efficiency of push type peristaltic pump has been improved, the transmission precision of peristaltic pump, the life of hose and the life of peristaltic pump.

Based on the principle, the working process of the extrusion peristaltic pump is as follows:

step 1: the No. 1 cam shaft rotates, the liquid inlet stop cam closes the pipeline, the liquid discharge stop cam opens the pipeline, and the liquid discharge stop cam keeps the state and prepares for liquid discharge;

step 2: no. 2 motor control No. 2 camshaft rotates, and the position that extrusion cam and work briquetting contacted gets into and pushes away the journey section, and extrusion cam pushes away the journey section and impels work briquetting extrusion hose, and liquid is extruded by the hose in, and after the cam rotated predetermined angle No. 2 motor stall, the flowing back process stops.

And step 3: no. 1 cam shaft rotates, the liquid discharge stopping cam is closed, the liquid inlet stopping cam is opened, and the liquid inlet direction of the hose is smooth.

And 4, step 4: and the No. 2 motor is started to drive the extrusion cam to rotate forwards or reversely, so that the contact area of the extrusion cam and the working pressing block enters a near-rest section, the extrusion on the hose is released, the space is expanded in the process of recovering the hose, and liquid enters the hose from the liquid inlet direction of the hose to finish liquid accumulation in the hose.

And 5: and returning to the step 1.

The steps are circulated continuously, so that the liquid can move from the liquid inlet direction to the liquid outlet direction in the hose, and the pumping function of the extrusion type peristaltic pump with controllable flow is realized.

Example two

Different from the first embodiment, when the No. 2 cam shaft is arranged close to the hose, a transfer block needs to be arranged between the liquid inlet stop cam 602 and the liquid inlet stop block 3 on the No. 1 cam shaft, and a transfer block also needs to be arranged between the liquid discharge stop cam 603 and the liquid discharge stop block 5. Wherein, two switching blocks need to stride No. 2 camshafts.

The structure of the embodiment is more complex than that of the embodiment, and the stability is not as good as that of the embodiment I.

EXAMPLE III

Different from the first embodiment, the transmission component may be a link mechanism, and one end of the pressing unit is driven by the link to reciprocate linearly (as shown in fig. 6), so as to periodically press the hose.

As shown in FIG. 6, the first link 13 can rotate around one end, then the first link 13 drives the second link 14 to rotate, the second link 14 pushes the slider 15 to move along a straight line, wherein the slider 15 can be used as an extrusion piece to extrude the hose.

Wherein, the liquid inlet stop cam, the extrusion cam and the working stop cam can adopt the structure.

Example four

In this embodiment, as shown in fig. 7, the transmission component is a cam 17, the pressing unit is a swinging rod 16, one end of the swinging rod 16 is hinged on the body 1, and the other end of the swinging rod 16 is driven by the cam 17 to make swinging reciprocating motion to periodically squeeze the hose 18.

It can be understood that the hose can be pressed by the embodiment through a combination mode of the cam and the swinging rod, the driving component can adopt the cam for the extrusion part, the extrusion block can adopt the swinging rod, and the swinging rod presses the hose under the driving of the cam.

For the transmission component and the pressing structure of the stopping part, a combination of a cam and a pressing block can be adopted, and a combination of a cam and a swinging rod can also be adopted, which are not limited.

EXAMPLE five

Different from the fourth embodiment, the transmission component and the pressing unit can be both rod members, the transmission component and the pressing unit form a link mechanism, and one end of the pressing unit is driven by the transmission component to swing and reciprocate to periodically press the hose.

Wherein, the one end of transfer line cup joints on the swinging arms, and the transfer line can slide on the swinging arms, and the one end of swinging arms articulates on the body. The transmission rod is driven by the motor to rotate, and the other end of the swinging rod is driven by the transmission rod to swing and reciprocate.

EXAMPLE six

Fig. 8 is a schematic flow chart of a flow control method for an extrusion type peristaltic pump provided in an embodiment of the present disclosure. As shown in fig. 8, the method for controlling the flow rate of the extrusion type peristaltic pump may include the steps of:

step 801: acquiring the liquid amount to be filled and the maximum filling liquid amount of the extrusion type peristaltic pump;

step 802: determining a first rotation parameter of a first transmission component according to the liquid amount to be filled and the maximum filling liquid amount;

step 803: and controlling the first transmission component to rotate according to the first rotation parameter to finish the filling of the liquid amount to be filled at one time.

In the method, after the structure of the peristaltic pump, the rotating speed of the motor and the model of the hose are determined, the maximum filling liquid amount can be determined, and the maximum filling amount can be obtained according to experimental measurement. It should be noted that the method is a flow control method without changing the structure of the peristaltic pump.

The first transmission element can be understood as a transmission element which directly drives the pressure piece to press the hose.

Wherein, the first rotation parameter may be a rotation angle, a rotation time, and the like.

In order to control the flow rate of the squeeze peristaltic pump, the ratio of the liquid amount to be filled to the maximum filling amount can be first determined, and then the rotation parameter of the transmission member is adjusted according to the proportional relationship. For example, when the first transmission member is a cam, the first rotational parameter may be a push segment motion angle of the cam. At the moment, the stroke motion angle of the cam is in a correlation relation with the filling amount of the extrusion type peristaltic pump, and the correlation relation is determined by the shape of the cam.

Further, step 802 may determine a first rotation parameter of the first transmission component according to the liquid amount to be filled and the maximum liquid amount to be filled, and specifically may include:

and searching the push section motion angle of the cam corresponding to the liquid amount to be filled from the correlation.

For example, the filling quantity can be linearly proportional to the push segment motion angle by controlling the shape of the cam. If the liquid amount to be filled is half of the maximum liquid filling amount, half of the motion angle of the cam rotation section can be controlled to stop, and thus, the liquid with half of the maximum liquid filling amount can be obtained.

If the correlation between the filling quantity and the push segment motion angle is not a simple linear proportional relationship, the correlation between the filling quantity and the push segment motion angle can be determined experimentally for any correlation and then stored. When the liquid amount to be filled is determined, the corresponding motion angle of the pushing section can be obtained by automatically inquiring the association relation, and then the first transmission component is driven to rotate.

Optionally, the movement angle of the push stroke section of the cam is in a linear relation with the filling amount of the extrusion type peristaltic pump; determining a first rotation parameter of a first transmission component according to the liquid amount to be filled and the maximum filling liquid amount, which may specifically include:

determining the proportional relation between the liquid amount to be filled and the maximum filling liquid amount;

and determining the push stroke section motion angle to be rotated of the cam according to the push stroke section motion angle of the cam and the proportional relation. The motion angle of the push stroke section to be rotated of the cam is the product of the motion angle of the push stroke section of the cam and the proportional relation.

In some embodiments, the method may further comprise:

determining a second rotation parameter of the first transmission component according to the first rotation parameter, wherein the first rotation parameter comprises a time parameter;

and controlling the second transmission component to rotate according to the second rotation parameter.

The second transmission element can be understood as the transmission element of the stop valve (which can comprise a liquid inlet stop block and a liquid outlet stop block) for stopping the hose. The mechanism can be a cam structure or a linear transmission mechanism.

Since the rotation angle of the first transmission member is changed, the rotation time of the first transmission member is also changed, and the opening and closing times of the liquid inlet stopping block and the liquid discharge stopping block need to be adjusted. These parameters may be determined in association with the first rotation parameter.

It should be noted that the first transmission component and the second transmission component are driven by different power devices, so as to control the first transmission component and the second transmission component respectively according to the rotation parameters.

Optionally, the determining a second rotation parameter of the first transmission component according to the first rotation parameter may specifically include:

determining the rotation time of the first main shaft according to the first rotation parameter;

and determining the rotation time of the second main shaft according to the rotation time of the first main shaft.

When the first transmission part and the second transmission part are both camshafts, the filling operation of different liquid flows can be completed only by determining the rotation time of the two shafts.

Specifically, the profile of a push stroke motion section of the extrusion cam controls the motion law of the working pressing block, so as to control the extrusion process of the hose, wherein the motion angle of the push stroke section is beta, and the profile of the push stroke section is an equal-flow liquid discharge curve.

Assuming that the cam rotates through the push segment movement angle beta to discharge a liquid volume of V, if 0.5V of liquid needs to be discharged, the cam needs to move by an angle of 0.5 beta, that is, the liquid volume discharged in any proportion only needs to correspond to the proportional rotation through the push segment movement angle. When the liquid discharging operation is carried out, the liquid inlet stopping block closes the pipeline, the liquid discharging stopping block is opened, the motor No. 2 rotates for a certain angle according to the preset liquid requirement, the fluid discharging with the required volume is realized, then the motor No. 2 stops, the motor No. 1 acts again, the cam shaft 1 acts to control the liquid discharging stopping block to close the pipeline, the liquid discharging fluid is cut off, the liquid discharging is stopped, and the quantitative discharging of the fluid is realized. Through the linkage of controlling No. 1 motor and No. 2 motor, timely control flowing back process ends, avoids unnecessary liquid measure to discharge.

It should also be noted that 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (23)

1. An extruded peristaltic pump, comprising: the hose cutting device comprises a body, a first transmission part, a second transmission part, an extrusion part, a stop block and a limiting plate, wherein the limiting plate is arranged on the upper end face of the body and is fixedly connected with the body, and a hose is placed below the limiting plate;

the extrusion piece is driven by the first transmission component to do reciprocating motion and is used for pressing the hose; the stopping block is driven by the second transmission component to do reciprocating motion and used for stopping the liquid inlet end or the liquid outlet end of the hose, and the first transmission component and the second transmission component are driven by different power devices.

2. The extrusion peristaltic pump of claim 1, wherein the stop block comprises a feed stop block and a discharge stop block, the feed stop block and the discharge stop block being disposed on opposite sides of the extrusion.

3. The extrusion peristaltic pump of claim 2, wherein the extrusion is linearly reciprocated by the first drive member and the stop block is linearly reciprocated by the second drive member.

4. The squeeze peristaltic pump of claim 3, wherein the first transmission member and the second transmission member are an eccentric transmission or a linear transmission.

5. The extrusion type peristaltic pump as recited in claim 4, wherein the first transmission member comprises a first main shaft and a first cam fixedly arranged on the first main shaft, the second transmission member comprises a second main shaft and a second cam and a third cam fixedly arranged on the second main shaft at intervals, the phase angles corresponding to the highest peaks of the second cam and the third cam are different, the first main shaft and the second main shaft are arranged in parallel in the liquid transmission direction, the first cam is arranged between the second cam and the third cam in the liquid transmission direction, the phase angles corresponding to the highest peaks of the first cam and the second cam are different, and the phase angles corresponding to the highest peaks of the first cam and the third cam are different.

6. The extrusion peristaltic pump of claim 5, wherein a first transition block is disposed between the first cam and the extrusion when the second spindle is disposed adjacent the hose, the second spindle being positioned above the first spindle, the first transition block passing through the second spindle.

7. The squeeze peristaltic pump as recited in claim 5, wherein when the first spindle is disposed adjacent to the hose, a second transition block is disposed between the second cam and the inlet liquid stop block, a third transition block is disposed between the third cam and the discharge liquid stop block, the first spindle is disposed above the second spindle, and the second transition block and the third transition block pass through the first spindle.

8. The extrusion peristaltic pump as recited in claim 5, wherein the first cam is configured to drive the extrusion in a linear reciprocating motion, the second cam is configured to drive the inlet stop block in a linear reciprocating motion, the third cam is configured to drive the discharge stop block in a linear reciprocating motion, and the inlet stop block and the discharge stop block alternately maintain compression on the hose.

9. The extrusion peristaltic pump of claim 5, wherein the first cam, the second cam, or the third cam are each eccentric wheels and the extrusion is a press block.

10. The extrusion type peristaltic pump according to claim 1, wherein the extrusion piece is arranged inside the body, a pressing block moving groove is formed inside the body, a hose fixing portion is arranged at a notch end of the pressing block moving groove, and the limiting plate is fixedly connected with the notch end of the pressing block moving groove in a detachable mode.

11. The squeeze peristaltic pump of claim 10, wherein the hose retainer portion is a groove in the body or a snap removably disposed on the body.

12. The extrusion type peristaltic pump as claimed in claim 10, wherein a plurality of slide rails are provided inside the press block moving groove in the moving direction of the pressing member.

13. The squeeze peristaltic pump as set forth in claim 2, wherein said intake block and said discharge block are clamping blocks.

14. The squeeze peristaltic pump as claimed in claim 13, wherein the retainer plate is located adjacent to the end face of the hose and is provided with an elastic material at a position corresponding to the clamp block.

15. The extrusion peristaltic pump of claim 9, wherein the extrusion comprises two or more subpockets, or wherein the intake stop block comprises two or more subpockets, or wherein the discharge stop block comprises two or more subpockets.

16. The extrusion peristaltic pump as recited in claim 2, wherein the plurality of retainer plates are disposed to correspond to the inlet cutoff block, the extrusion member, and the discharge cutoff block, respectively.

17. The extrusion peristaltic pump of claim 1, wherein the extrusion is driven by the first drive member to oscillate and reciprocate.

18. The extrusion peristaltic pump of claim 17, wherein the first transmission member is a cam, the extrusion member is a swinging rod, one end of the swinging rod is hinged to the body, and the other end of the swinging rod is driven by the cam to perform swinging reciprocating motion to periodically extrude the hose.

19. The extrusion peristaltic pump of claim 17, wherein the first transmission member and the extrusion member are both rod members which form a linkage mechanism, and one end of the extrusion member is driven by the first transmission member to perform an oscillating reciprocating motion to periodically extrude the flexible tube.

20. The extrusion peristaltic pump of claim 1, wherein springs are disposed between the stop plate and the extrusion and between the stop plate and the stop block, the springs being in compression.

21. The extrusion peristaltic pump of claim 10, further comprising: and the sliding groove block is fixedly connected with the body, and a sliding groove for accommodating the limiting plate is formed between the sliding groove block and the body.

22. The squeeze peristaltic pump of claim 21, wherein the chute block does not obscure the hose retainer.

23. The extrusion peristaltic pump of claim 22, wherein the number of the runner blocks is 2, and the runner blocks are L-shaped.

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