An extrusion drive structure and an extrusion peristaltic pump

Abstract

This specification discloses a compression drive structure and a compression peristaltic pump. The compression drive structure includes a movable plate, a ball screw mechanism, a first movable frame, and a second movable frame. In this design, a ball screw mechanism replaces the cam structure as the drive mechanism. Because the threaded pair of the ball screw mechanism inherently provides smooth transmission, the upward movement of the movable plate is smooth, reducing the impact on the hose caused by sudden movements of the movable plate, thereby improving the stability of the compression pump's delivery. Simultaneously, since both the first and second movable frames form a parallel linkage mechanism with the movable plate, the up-and-down movement of the movable plate is smooth, avoiding the problem of uneven load on both sides of the movable plate.

Description

Technical Field

[0001] This application relates to the field of peristaltic pump technology, and in particular to a squeeze drive structure and a squeeze peristaltic pump. Background Technology

[0002] In existing technologies, extrusion pumps mostly use cam mechanisms to drive the movable block to move in the vertical direction. However, since the cam mechanism is a higher pair mechanism, when driving the movable block to move upward, it will also generate a horizontal thrust on the movable block, causing the movable block to have a horizontal movement tendency during the movement. This makes it impossible for the movable block to move smoothly up and down. The instability of the movement causes the extrusion pump to not work stably, which in turn affects the pumping accuracy of the extrusion pump. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the embodiments in this specification are implemented as follows:

[0004] This specification provides an embodiment of an extrusion drive structure, comprising: a movable plate, a ball screw mechanism, a first movable frame, and a second movable frame. The first movable frame and the second movable frame are located on the same side of the movable plate. Both the first movable frame and the second movable frame are connected to the movable plate via connecting rods. The first movable frame, the second movable frame, and the movable plate constitute a parallel linkage mechanism. The ball screw mechanism is used to drive the first movable frame and the second movable frame to move horizontally.

[0005] Optionally, the roller screw mechanism includes: a screw, a nut one, and a nut two. The nut one is fixedly connected to the movable frame one, and the nut two is fixedly connected to the movable frame two. The screw is threadedly connected to the nut one and the nut two respectively, and the nut one and the nut two are sequentially threaded onto the screw along the axial direction.

[0006] Optionally, the threads of nut one and nut two are opposite, and the roller screw mechanism drives the moving frame one and the moving frame two to move in opposite directions.

[0007] Optionally, the extrusion drive structure further includes: a frame, the movable plate, the first movable frame and the second movable frame are disposed inside the frame, and the lead screw is rotatably connected to the frame; slide rails are provided at both ends of the frame, and slide grooves are provided at the ends of the first movable frame and the second movable frame near the frame, and the slide rails and the slide grooves cooperate with each other.

[0008] Optionally, there are two movable plates, which are symmetrically arranged relative to the first movable frame. Any one of the movable plates is connected to the first movable frame and the second movable frame via a connecting rod.

[0009] Optionally, the connecting rod includes a first segment and a second segment that cooperate with each other. The positions where the first segment and the second segment are installed together are provided with a serrated structure that can mesh with each other. The meshing length of the first segment and the second segment can be adjusted.

[0010] This specification also provides a squeeze-type peristaltic pump, including: the above-mentioned squeeze drive structure, frame, tube clamp mechanism and cover plate. The squeeze drive structure is disposed inside the frame. The cover plate is fixedly disposed above the frame. The frame has an opening corresponding to the position of the movable plate. A hose is accommodated between the movable plate and the cover plate. The tube clamp mechanism is fixedly disposed at both ends of the cover plate and is used to clamp the hose.

[0011] Optionally, the pipe clamp mechanism includes a pipe clamp housing, a first clamp, and a second clamp. Both the first clamp and the second clamp are disposed on the pipe clamp housing, and the first clamp and the second clamp can cross each other for fixing the hose.

[0012] Optionally, both the first gripper and the second gripper are connected to the inner wall of the pipe clamp housing via springs, and both the first gripper and the second gripper are rotatably connected to the pipe clamp housing.

[0013] Optionally, either the first clamp or the second clamp is movably connected to the pipe clamp housing, and the distance between the first clamp and the second clamp is adjustable.

[0014] Optionally, the pipe clamping mechanism further includes two parallel operating levers, namely, operating lever one and operating lever two, both of which are racks connected by gear meshing. Operating lever one is movably connected to gripper one, and operating lever two is movably connected to gripper two.

[0015] Optionally, the pipe clamp mechanism further includes a translation plate, the second gripper is fixed on the translation plate, and one side of the translation plate is connected to the pipe clamp housing by a spring.

[0016] Optionally, the first gripper and the second gripper constitute a gripper group, and there are multiple gripper groups, which are spaced apart along the vertical direction of the hose.

[0017] Optionally, multiple grippers can be linked together, or multiple grippers can be linked together.

[0018] The above-described at least one technical solution used in the embodiments of this specification can achieve the following beneficial effects:

[0019] In this design, a ball screw mechanism is used instead of a cam structure as the drive mechanism. The inherent smooth transmission of the ball screw mechanism's threaded pair ensures stable upward movement of the movable plate, reducing the impact of sudden movements on the hose and thus improving the stability of the extrusion pump's delivery. Furthermore, since both the first and second movable frames form parallel linkage mechanisms with the movable plate, the up-and-down movement of the movable plate is smooth, avoiding the problem of uneven load on both sides of the movable plate. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of a compression drive structure and its cooperation with a hose, provided in an embodiment of this specification.

[0022] Figure 2 A three-dimensional structural diagram of the extrusion pump provided in the embodiments of this specification;

[0023] Figure 3 for Figure 2 The main view;

[0024] Figure 4 for Figure 2 A sectional view;

[0025] Figure 5 This is a schematic diagram of the linkage structure;

[0026] Figure 6 A schematic diagram of the installation structure of the check valve and hose;

[0027] Figure 7 A schematic diagram of the three-dimensional structure of a clamp-type pipe clamp mechanism;

[0028] Figure 8 Schematic diagram of the bottom of the clamp-type pipe clamp mechanism

[0029] Figure 9 This is a sectional view of a clamp-type pipe clamp mechanism;

[0030] Figure 10 A three-dimensional structural diagram of the movable pipe clamp mechanism;

[0031] 1. One-way valve; 2. Hose; 3. Extrusion drive structure; 4. Movable plate; 5. Nut 1; 6. Nut 2; 7. Lead screw; 8. Moving frame 1; 9. Moving frame 2; 10. Connecting rod; 10-1. Rod segment 1; 10-2. Rod segment 2; 11. Coupling; 12. Motor; 13. Pipe clamp mechanism; 14. Cover plate; 15. Slide groove; 16. Slide rail; 17. Frame; 18. Pipe clamp housing 1; 19. Claw 1; 20. Claw 2; 21. Finger structure; 22. Spring 1; 23. Control lever 1; 24. Control lever 2; 25. Control branch; 26. Gear; 27. Moving clamping assembly; 28. Pipe clamp housing 2; 29. ​​Claw 3; 30. Claw 4; 31. Translation plate; 32. Slide rail; 33. Spring 2. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] To avoid the problem of the movable plate moving horizontally due to the cam compression mechanism, this invention uses a ball screw mechanism to drive the movable plate to move up and down. The compression drive structure specifically includes: a movable plate, a ball screw mechanism, a first movable frame, and a second movable frame. The first and second movable frames are located on the same side of the movable plate and are connected to the movable plate via connecting rods. The first and second movable frames and the movable plate form a parallel linkage mechanism. The ball screw mechanism is used to drive the first and second movable frames to move horizontally.

[0034] In this design, the movable plate can be understood as a pressing component that can move up and down, used to press the hose it contacts. Movable frame one and movable frame two are horizontally moving drive components used to drive the movable plate up and down. A ball screw mechanism provides power to drive movable frame one and movable frame two horizontally. It should be noted that movable frame one, movable frame two, and the movable plate form a parallel linkage structure, which can be a four-bar, six-bar, or eight-bar linkage, etc. In one case, movable frame one and movable frame two move in opposite directions; when using a threaded connection with a lead screw, the thread direction can be set to opposite.

[0035] In this design, the threaded pair of the ball screw mechanism inherently offers the advantage of smooth transmission, resulting in a smooth upward movement of the movable plate. This reduces the impact on the hose caused by sudden movements of the movable plate, thereby improving the stability of the extrusion pump's delivery. Furthermore, since both the first and second movable frames form parallel linkage mechanisms with the movable plate, the up-and-down movement of the movable plate is smooth, avoiding the problem of uneven loading on both sides of the movable plate.

[0036] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] like Figure 1 As shown, the extrusion drive structure 3 includes a movable plate 4, a first movable frame 8, and a second movable frame 9. The first movable frame 8 and the second movable frame 9 are arranged vertically relative to the movable plate 4, and are located on the same side of the movable plate 4. They are arranged sequentially at intervals along the length of the movable plate 4. The length direction of the movable plate 4 is the same as the placement direction of the hose. The first movable frame 8 is connected to the movable plate 4 via a first connecting rod assembly, and the second movable frame 9 is connected to the movable plate 4 via a second connecting rod assembly. Both the first and second connecting rod assemblies consist of four connecting rods of the same length (e.g.,...). Figure 1 (As shown in number 10). Two connecting rods (arranged in parallel) are provided on each side of the movable frame 8 to connect with the movable plate 4. Similarly, two connecting rods (arranged in parallel) are provided on each side of the movable frame 9 to connect with the movable plate 4.

[0039] Among them, the connecting rod 10 is hinged to the movable frame 8 and the movable frame 9.

[0040] The extrusion drive structure of the present invention also includes a ball screw mechanism for driving the first movable frame 8 and the second movable frame 9 to move relative to each other in the horizontal direction. The ball screw mechanism includes a screw 7 with a right-hand thread, a nut 5 with a right-hand thread, and a nut 6 with a left-hand thread. The nut 5 and the nut 6 are sequentially mounted on the screw 7 in the axial direction. The nut 5 is fixedly connected to the first movable frame 8, and the nut 6 is fixedly connected to the second movable frame 9. When the screw 7 rotates, the nut 5 and the nut 6 are engaged with the screw 7 in opposite directions, so that the screw 7 can drive the nut 5 and the nut 6 to move simultaneously in opposite directions.

[0041] like Figure 4As shown, in order to ensure that nut 5 and nut 6 move only in a straight line, a horizontally arranged slide rail 16 is also included. At the same time, a slide groove 15 is provided at the contact position between the moving frame 8 and the moving frame 9 and the slide rail 16. The slide groove 15 is slidably connected with the slide rail 16. The slide groove 15 is arranged along the moving direction of the moving frame or along the guiding direction of the ball screw mechanism. This not only ensures that the slide groove 15 can move horizontally along the slide rail 16, but also limits the slide groove 15 in the vertical direction by the slide rail 16, prohibiting vertical movement. (Since the moving frame is fixedly connected to the nut, the slide rail 16 is also set to limit the rotation of the nut, ensuring that the nut can only move in the horizontal direction).

[0042] like Figure 2 As shown, in order to fix the ball screw mechanism and the slide rail 16, the present invention also includes a frame 17, wherein the ball screw 7 is rotatably connected to the frame 17, the slide rail 16 is fixedly connected to the frame 17, and one end of the ball screw 7 is connected to the motor via a coupling 11. The movable plate 4 and the linkage mechanism are arranged inside the frame 17.

[0043] Example 2

[0044] To improve extrusion efficiency and enable simultaneous extrusion of more pipes, two movable plates can be installed to extrude the hoses from both above and below the frame, allowing for bidirectional liquid delivery. The two movable plates are symmetrically positioned relative to movable frame 8 and movable frame 9, meaning that identical connecting rods and movable plates are located on the opposite side of movable frame 8 and movable frame 9. (See reference...) Figure 2-4 The corresponding part in the extrusion pump.

[0045] Example 3

[0046] Based on the extrusion drive structure provided in Embodiment 1, in order to finely adjust the length difference between the connecting rods, this embodiment provides a length adjustment structure for the connecting rods. For example... Figure 5 As shown, the connecting rod 10 includes two mating segments, 10-1 and 10-2. The mating positions of segments 10-1 and 10-2 are equipped with serrated structures, which mesh with each other. The meshing length of segments 10-1 and 10-2 is adjustable. In use, if the movable plate cannot remain level after installation due to inconsistent lengths of the connecting rod 10, the length can be adjusted by changing the meshing position of the serrated segments 10-1 and 10-2.

[0047] Example 4

[0048] Based on the extrusion drive structure of Embodiment 1, this embodiment provides an extrusion peristaltic pump, such as... Figure 1-4As shown, it includes: an extrusion drive structure 3, a frame 17, a pipe clamping mechanism 13, and a cover plate 14. The extrusion drive structure 3 is disposed inside the frame 17. The cover plate 14 is fixedly disposed above the frame 17. The frame 17 has openings corresponding to the position of the movable plate 4. The space between the movable plate 4 and the cover plate 14 is used to accommodate the hose 2. The pipe clamping mechanism 13 is fixedly disposed at both ends of the cover plate 14 and is used to clamp the hose 2.

[0049] The top and bottom of the frame 17 have through holes corresponding to the positions of the movable plate 4. When the movable plate 4 is driven by the linkage mechanism to extend to the position where the hose 2 is located below the frame 17, the upper movable plate 4 presses the hose above the frame 17 toward the upper cover plate 14, and the lower movable plate 4 presses the hose below the frame 17 toward the lower cover plate 14.

[0050] In addition, the frame 17 is provided with support legs to support the frame 17 as a whole, so as to prevent the cover plate 14 below from directly contacting the extrusion pump placement surface and causing the problem of difficulty in opening and closing.

[0051] Working Principle: The initial positions of movable frame 8 and movable frame 9 are close to each other. When the extrusion pump extrudes the hose, the motor drives the lead screw 7 to rotate, causing nuts 5 and 6 to move simultaneously in opposite directions. This causes movable frames 8 and 9 to move in opposite directions simultaneously. Since both movable frames 8 and 9 are connected to the movable plate 4 via connecting rod 10, the outward movement of the movable frames causes the connecting rod at the hinge point on the movable plate 4 to rotate outward, thereby increasing the distance between the movable frames and the movable plate 4. This pushes the movable plate 4 towards the cover plate 14 to extrude the hose 2. Because the threaded transmission of the ball screw mechanism inherently has the advantage of smooth transmission, the upward movement of the movable plate 4 is smooth, reducing the impact of the sudden movement of the movable plate 4 on the hose, thus improving the stability of the extrusion pump's delivery. Simultaneously, since both movable frames 8 and 9 form a parallelogram mechanism with the movable plate 4, the up-and-down movement of the movable plate 4 is smooth, avoiding the problem of uneven load on both sides of the movable plate 4 in the prior art.

[0052] In this technical solution, to simplify the structure of the extrusion pump, a one-way valve is used instead of the extrusion pump's shut-off valve. For example... Figure 8As shown, two one-way valves are connected to both ends of the hose. The one-way valve in the inlet direction is called the inlet valve, and the one-way valve in the outlet direction is called the outlet valve. The flow direction of the two one-way valves is the same, ensuring that the pipeline is connected in one direction. During use, squeezing the hose increases the pressure inside, which pushes the inlet valve to close, allowing air in the hose to be discharged through the outlet one-way valve. Releasing the hose allows it to return to its original volume due to its elasticity. During this process, the negative pressure inside the hose increases, causing the outlet valve to close, and liquid flows into the hose from the inlet valve direction. Finally, through repeated squeezing of the hose, the liquid inside the hose flows from the inlet valve direction to the outlet valve direction. Because the outlet valve closes during the hose's return to its original position to prevent backflow, the volume of the hose compressed is the volume of the discharged liquid, facilitating control of the pumping accuracy of the squeeze pump.

[0053] One-way valves are conventional one-way valve pipeline structures, mainly including diaphragm one-way valves, spring one-way valves and duckbill one-way valves. The opening pressure of a one-way valve must not exceed the negative pressure inside the hose, and even less must it exceed the pressure generated by the squeezing inside the hose.

[0054] To better realize the function of the extrusion pump, the opening pressure of the one-way valve and the back sealing pressure should be as low as possible. To enable the extrusion pump to repeatedly extrude the hose, the drive mechanism can be a conventional cam mechanism.

[0055] In addition to the above-mentioned one-way valve pipeline structure, this specification also provides several pipe clamping mechanisms, as shown in the following embodiments.

[0056] Example 5

[0057] This embodiment provides a clamp-type pipe clamp that clamps the hose to deform it, increasing the friction between the clamp and the hose and improving the fixing effect on the hose.

[0058] like Figure 7 As shown, this pipe clamp mechanism includes a pipe clamp housing 18, and two grippers 19 and 20, each with multiple finger-shaped structures 21 at one end. The finger-shaped structures 21 of the grippers 19 and 20 are bent inwards and can intersect each other. The grippers 19 and 20 are rotatably mounted on the pipe clamp housing, and the finger-shaped structures 21 of the grippers 19 and 20 are arranged opposite each other to clamp the hose.

[0059] The pipe clamp housing 18 is fixedly installed at both ends of the extrusion pump cover plate 14, or the two ends of the cover plate 14 are directly integrated with the pipe clamp housing 18. It is important to note that the pressure-bearing surface of the pipe clamp housing 18 and the working surface of the cover plate 14 are on the same plane. When installing the hose 2, the finger-shaped structures 21 of the clamping claws 19 and 20 interlock to clamp the hose. Each finger-shaped structure 21 contacts the outer wall of the hose 2, increasing the contact friction and improving the hose's fixation effect. Simultaneously, under the clamping action of the clamping claw assembly, the hose 2 is tightly clamped to the working surface of the cover plate 14, preventing vibration of the hose 2 under pressure due to the distance between the hose 2 and the working surface of the cover plate 14, which could lead to a decrease in the flow extrusion pump's working accuracy.

[0060] Springs are provided at the other ends of both claw 19 and claw 20, connecting to the inner wall of the pipe clamp housing. These springs provide tension to claw 19 and claw 20. Therefore, when claw 19 and claw 20 rotate inwards, they can clamp the hose 2 towards the pipe clamp housing, thus bringing the hose closer to a supporting surface. This further increases the frictional force for hose fixation. Furthermore, the simultaneous application of pressure by claw 19 and claw 20 to the hose maintains uniform radial force on the hose, further improving the stability of hose fixation and enhancing the clamping effect.

[0061] In addition, the multiple finger-shaped structures 21 on the clamps are also designed to extend the fixed length of the hose in the axial direction, increase the contact area with the hose to improve the clamping force, and prevent the hose from moving in the axial direction. When the hose needs to be replaced, simply separate the clamp 19 and clamp 20 to release the hose 2.

[0062] When multiple hoses need to be clamped, clamping claw 19 and clamping claw 20 form a clamping claw group. Multiple clamping claw groups are arranged sequentially along the length of the housing inside the clamp housing. Spring 22 connects clamping claw 19 and clamping claw 20 of adjacent clamping claw groups.

[0063] To enable multiple grippers to open simultaneously, this embodiment also includes two control levers (attached) that can slide parallel to each other along the length direction inside the pipe clamp housing 18. Figure 8-9Each control lever has multiple control branches 25. The control branches of control lever one 23 are movably connected to the grippers one 19 of each gripper group, and the control branches of control lever two 24 are movably connected to the grippers two 20 of each gripper group. In use, moving control lever one 23 can simultaneously rotate all grippers one 19, and moving control lever two 24 can simultaneously rotate all grippers two 20. To achieve linkage between the two control levers, control lever two 24 and control lever one 23 in this invention are rack and pinion structures with their teeth arranged opposite each other. A gear 26 is also provided between control lever one 23 and control lever two 24. The gear 26 meshes with the teeth on control lever one 23 and control lever two 24 respectively, so that moving one control lever can achieve linkage with the other control lever, or directly rotating gear 26 can make control lever one 23 and control lever two 24 move simultaneously, thereby opening grippers one 19 and grippers two 20 at the same time.

[0064] Example 6

[0065] like Figure 10 As shown, the clamp-type pipe clamp in this embodiment is a movable structure. Its working principle and effect are the same as those in Embodiment 5, except that the rotating gripper is replaced with a movable gripper. Specifically, multiple movable clamping groups 27 are provided on the pipe clamp housing 28. Each movable clamping group 27 includes a gripper 3 29 fixed on the pipe clamp housing 28 and a gripper 4 30 that is horizontally movable along the length of the pipe clamp housing 28 and is disposed opposite to the gripper 3 29. The gripper 4 30 is fixed on the translation plate 31. A slide rail 32 is provided on the inner side of the pipe clamp housing 28 along the length direction. The translation plate 31 works in conjunction with the slide rail 32 so that the translation plate 31 can only move along the slide rail 32. In use, moving the translation plate 31 horizontally allows the gripper 4 30 to move closer to and away from the gripper 3 29, thereby achieving clamping and releasing of the hose.

[0066] In order to achieve the clamping effect of the moving clamping assembly 27, a spring 2 33 is provided at one end of the translation plate 31 in the direction of movement and is connected to the pipe clamp housing 28. The spring 2 33 provides power to the translation plate 31, pushing the gripper 4 30 to move towards the gripper 3 29 to maintain the clamping force.

[0067] When multiple sets of pipe clamps are set, the three-claw 29 are arranged sequentially at intervals along the length of the two-claw housing 28. At the same time, multiple four-claw 30s are arranged sequentially along the length of the translation plate 31. The spacing between adjacent four-claw 30s is the same as the spacing between adjacent three-claw 29s.

[0068] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A compression drive structure for a compression peristaltic pump, characterized in that, include: The system comprises a movable plate, a ball screw mechanism, a first movable frame, and a second movable frame. The first and second movable frames are located on the same side of the movable plate and are connected to it via connecting rods. The first and second movable frames, together with the movable plate, form a parallel linkage mechanism. The ball screw mechanism drives the first and second movable frames to move horizontally, and the first and second movable frames drive the movable plate to move vertically. Each side of the first movable frame has two parallel connecting rods connected to the movable plate, and each side of the second movable frame has two parallel connecting rods connected to the movable plate. The ball screw mechanism includes a screw, a nut one, and a nut two. The nut one is fixedly connected to the movable frame one, and the nut two is fixedly connected to the movable frame two. The screw is threadedly connected to the nut one and the nut two, respectively. The nut one and the nut two are sequentially threaded onto the screw along the axial direction. The threads of the nut one and the nut two have opposite directions of rotation, and the ball screw mechanism drives the movable frame one and the movable frame two to move in opposite directions.

2. The squeeze drive structure of claim 1, wherein, The extrusion drive structure further includes: a frame, the movable plate, the first movable frame and the second movable frame are disposed inside the frame, and the lead screw is rotatably connected to the frame; slide rails are provided at both ends of the frame, and slide grooves are provided at the ends of the first movable frame and the second movable frame near the frame, and the slide rails and the slide grooves cooperate with each other.

3. The squeeze drive structure of claim 1, wherein, There are two movable plates, which are symmetrically arranged relative to the first movable frame. Any one of the movable plates is connected to the first movable frame and the second movable frame via a connecting rod.

4. The squeeze drive structure of claim 1, wherein, The connecting rod includes a first segment and a second segment that cooperate with each other. The positions where the first segment and the second segment are installed together are provided with a sawtooth structure that can mesh with each other. The meshing length of the first segment and the second segment can be adjusted.

5. A peristaltic pump of the squeeze type, characterized in that, include: The extrusion drive structure, frame, pipe clamping mechanism, and cover plate as described in claim 1, wherein the extrusion drive structure is disposed inside the frame, the cover plate is fixedly disposed above the frame, the frame is provided with an opening corresponding to the position of the movable plate, the space between the movable plate and the cover plate is used to accommodate a flexible tube, and the pipe clamping mechanism is fixedly disposed at both ends of the cover plate, the pipe clamping mechanism being used to clamp the flexible tube.

6. The extrusion peristaltic pump as described in claim 5, characterized in that, The pipe clamp mechanism includes a pipe clamp housing, a first clamp, and a second clamp. Both the first clamp and the second clamp are mounted on the pipe clamp housing. The first clamp and the second clamp can cross each other to secure the hose.

7. The extrusion peristaltic pump as described in claim 6, characterized in that, Both the first clamping claw and the second clamping claw are connected to the inner wall of the pipe clamp housing via springs, and both the first clamping claw and the second clamping claw are rotatably connected to the pipe clamp housing.

8. The extrusion peristaltic pump as described in claim 6, characterized in that, The first or second gripper is movably connected to the pipe clamp housing, and the distance between the first and second grippers is adjustable.

9. The peristaltic pump of claim 7, wherein, The pipe clamping mechanism further includes two parallel operating levers, namely operating lever one and operating lever two. Both operating lever one and operating lever two are racks, and the two racks are connected by gear meshing. Operating lever one is movably connected to the gripper one, and operating lever two is movably connected to the gripper two.

10. The peristaltic pump of claim 8, wherein, The pipe clamp mechanism also includes a translation plate, the second gripper is fixed on the translation plate, and one side of the translation plate is connected to the pipe clamp housing by a spring.

11. The peristaltic pump of claim 6, wherein, The first clamp and the second clamp constitute a clamp group, and there are multiple clamp groups, which are spaced apart along the vertical direction of the hose.

12. The peristaltic pump of claim 11, wherein, Multiple grippers can be linked together, or multiple grippers can be linked together.

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