Extrusion peristaltic pump

Abstract

The squeezing peristaltic pump comprises a shell, a transmission part, a transverse clamping mechanism and a pipe clamping valve mechanism, the transmission part is arranged in the shell, the transverse clamping mechanism and the pipe clamping valve mechanism are arranged on a top plate of the shell, the transverse clamping mechanism is used for transversely clamping a hose, and when the squeezing peristaltic pump works, the transverse clamping mechanism is used for transversely clamping the hose. The transmission part drives the transverse clamping mechanism to do reciprocating motion in the transverse direction of the hose so as to extrude the hose; the pipe clamping valve mechanisms are arranged at the positions close to the two ends of the hose and used for clamping the hose. According to the scheme, the hose extrusion mechanism for extruding the peristaltic pump adopts transverse clamping, and the hose is located in an open space, so that the hose is convenient to install.

Description

Technical Field

[0001] The present application relates to the technical field of peristaltic pumps, and in particular to an extrusion peristaltic pump. Background Art

[0002] As a type of hose transfer pump, the extrusion peristaltic pump achieves the purpose of liquid transfer by repeatedly squeezing the hose and cooperating with the valve installed on the pipeline. The regular movement and switching of the two can reduce the wear of the hose and increase the service life of the hose.

[0003] During the use of the extrusion peristaltic pump, the installation and removal of the hose are necessary operations. The existing design is to place the hose inside a closed space. When installing or removing, this closed space needs to be opened; when the hose needs to be replaced frequently, the contradiction of the poor convenience of this design will become prominent. Summary of the invention

[0004] In view of this, an embodiment of the present application provides an extrusion peristaltic pump to improve the convenience of replacing a hose.

[0005] To solve the above technical problems, the embodiments of this specification are implemented as follows:

[0006] An extrusion peristaltic pump provided in an embodiment of the present specification includes: a shell, a transmission component, a transverse clamping mechanism and a tube clamping valve mechanism, wherein the transmission component is arranged inside the shell, the transverse clamping mechanism and the tube clamping valve mechanism are arranged on the top plate of the shell, the transverse clamping mechanism is used to transversely clamp the hose, and when working, the transmission component drives the transverse clamping mechanism to reciprocate along the transverse direction of the hose, thereby squeezing the hose; the tube clamping valve mechanism is arranged near both ends of the hose, and is used to clamp the hose.

[0007] In one or more embodiments, the transverse clamping mechanism may include a fixed clamping plate and a movable clamping plate, wherein the fixed clamping plate is fixedly connected to the top plate, and the movable clamping plate is connected to the transmission component. When working, the hose is placed between the fixed clamping plate and the movable clamping plate.

[0008] In one or more embodiments, the pinch valve mechanism may include an inlet-end pinch valve and an outlet-end pinch valve, and the inlet-end pinch valve and the outlet-end pinch valve are linked.

[0009] In one or more embodiments, the inlet end clamp valve includes a clamp fixed block and a clamp movable block used in conjunction with each other, the clamp fixed block is fixedly connected to the top plate, and the hose is placed between the clamp fixed block and the clamp movable block.

[0010] In one or more embodiments, the extrusion peristaltic pump may further include: a compensation device, which is arranged on the outside of the tube clamping valve mechanism, and the compensation device includes a follow-up clamp block and an adjustment clamping assembly, and the adjustment clamping assembly is movably connected to the top plate. When working, the hose is placed between the follow-up clamp block and the adjustment clamping assembly, and the position of the adjustment clamping assembly can be adjusted.

[0011] In one or more embodiments, the adjustment clamping assembly may include: an adjustable clamping block, a sliding shaft, an adjustment wheel and an assembly housing; the assembly housing is fixedly connected to the top plate, the adjustment wheel is hinged to the assembly housing, the sliding shaft is arranged on the adjustable clamping block, a sliding groove is arranged on the adjustment wheel, and the sliding shaft can slide in the sliding groove.

[0012] In one or more embodiments, the follower clamping block is linked to the tube clamping movable block of the outlet end clamping valve.

[0013] In one or more embodiments, the adjusting wheel is provided with engraved lines for marking the position of the adjustable clamping block.

[0014] In one or more embodiments, the slide groove is a cam groove.

[0015] In one or more embodiments, the extrusion peristaltic pump may further include: a hose flow regulating device, which is disposed at the outlet end of the hose and fixed to the top plate, and is used to adjust the length of the hose.

[0016] In one or more embodiments, the hose flow regulating device may include: a sheath bracket, a pipe joint and a gear-adjusting sheath, the sheath bracket is arranged on the top plate, the hose passes through the inside of the gear-adjusting sheath and is connected to the pipe joint, the pipe joint is clamped with the gear-adjusting sheath, and the sheath bracket is clamped with the gear-adjusting sheath.

[0017] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:

[0018] The hose extrusion mechanism of the extrusion peristaltic pump in this solution adopts transverse clamping, and the hose is in an open space, which is convenient for the installation of the hose.

[0019] The pinch valve mechanisms in the embodiments of this specification are respectively arranged at both ends of the transverse clamping mechanism and are connected by a connecting rod, so as to achieve the purpose of one motor driving the inlet and outlet of two sets of pinch valves.

[0020] The compensation device in the embodiment of the present specification sets the original passive clamp to be position-adjustable. If the compensation effect is attenuated after replacing a hose of a different specification, the compensation effect can be amplified by adjusting the position.

[0021] The hose flow regulating device provided in the embodiment of this specification has a pipe joint position regulating device arranged in the axial direction of the hose, and the elastic extension of the hose is adjusted by adjusting the position of the pipe joint, thereby achieving the purpose of adjusting the liquid volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an extrusion peristaltic pump provided in an embodiment of this specification;

[0024] Figure 2 for Figure 1 Schematic diagram of the internal structure without the front cover;

[0025] Figure 3 An embodiment of a driving device for a transverse clamping mechanism;

[0026] Figure 4 An embodiment of a drive device for a pinch valve mechanism;

[0027] Figure 5 It is a schematic diagram of the planar structure of the hose squeezing mechanism composed of the transverse clamping mechanism and the pinch valve mechanism;

[0028] Figure 6 It is a plan view of the compensation device;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the compensation device;

[0030] Figure 8 A half-section view of the clamping assembly for compensation adjustment;

[0031] Fig. 9 It is a plan view of a hose flow regulating device;

[0032] Fig.10 It is a partial enlarged plan view of the hose flow regulating device;

[0033] Fig.11 It is a schematic diagram of the structure of the gear-shifting sleeve;

[0034] Fig.12 It is a schematic diagram of the connection structure between the sheath bracket and the gear-shifting sheath;

[0035] Reference numerals:

[0036] 1. Shell; 2. Base; 3. Front cover; 4. Locking device; 5. Handle; 6. Hinge; 7. Transverse clamping mechanism; 8. Pinch valve mechanism; 9. Hose; 10. Outlet; 11. Inlet; 12. Hose flow regulating device; 13. Compensation device; 14. Top plate; 15. Transverse drive motor; 16. Screw rod; 17. Transmission device; 18. Transverse clamping mechanism drive plate; 19. Valve drive motor; 20. Outlet pinch valve transmission device; 21. Inlet pinch valve transmission device; 22. Connecting rod; 23. Outlet pinch valve drive plate; 2 4. Drive plate of the clamp valve at the inlet end; 25. Fixed clamp plate; 26. Movable clamp plate; 27. Fixed block of the clamp at the outlet end; 28. Movable block of the clamp at the outlet end; 29. ​​Fixed block of the clamp at the inlet end; 30. Movable block of the clamp at the inlet end; 31. Compensation follow-up clamp block; 32. Compensation adjustment clamping assembly; 33. Clamping block; 34. Assembly housing; 35. Adjustment wheel; 36. Sliding shaft; 37. Slide groove; 38. Marking line; 39. Sheath bracket; 40. Pipe joint; 41. Shifting sleeve; 42. Bayonet; 43. Step; 44. Shift position mark; 45. Shift position. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0038] An embodiment of the present specification provides an extrusion peristaltic pump, comprising: a shell, a transmission component, a transverse clamping mechanism and a tube clamping valve mechanism, wherein the transmission component is arranged inside the shell, the transverse clamping mechanism and the tube clamping valve mechanism are arranged on the top plate of the shell, the transverse clamping mechanism is used to transversely clamp the hose, and when working, the transmission component drives the transverse clamping mechanism to reciprocate along the transverse direction of the hose, thereby squeezing the hose; the tube clamping valve mechanism is arranged near both ends of the hose, and is used to clamp the hose.

[0039] It should be noted that the housing in this embodiment is a hollow structure, in which a transmission component, a driving mechanism, etc. can be placed, and the transverse clamping mechanism and the pinch valve mechanism can use independent transmission components or driving mechanisms, or can use the same set of transmission components or driving mechanisms. The transmission component can be a rod, a pulley, a cam, an eccentric wheel, a roller, etc., and the driving mechanism can be a motor, etc.

[0040] The advantage of this solution is that the hose clamping mechanism, the transverse clamping mechanism and the hose clamping valve mechanism are arranged outside the shell, which makes it easy to replace the hose.

[0041] The transverse clamping mechanism can be understood as a mechanism that squeezes the hose in the transverse direction and occupies the area of ​​the hose to attract and discharge the fluid. The "transverse" here refers to the transverse direction of the hose. The length of the transverse clamping mechanism is related to the volume of the transmitted fluid. Under other conditions, the longer the length of the transverse clamping mechanism, the larger the area of ​​the squeezed hose, and the greater the volume of the transmitted fluid. The transverse clamping mechanism can generally include two parts that can move relative to each other to control the squeezing and relaxation of the hose. Compared with squeezing the hose with a roller, pressing the hose in the transverse direction reduces the friction on the hose in the longitudinal direction and increases the service life of the hose.

[0042] The pinch valve mechanism can be understood as two control switches at the outlet and inlet of the hose, which can be opened and closed, thereby cooperating with the lateral clamping mechanism to control the water suction and discharge of the hose. The pinch valve mechanism can be a mechanical structure or an electric structure. Similarly, the pinch valve mechanism can also adopt a solution of matching a fixed block and a movable block.

[0043] In this solution, the transverse clamping mechanism is arranged along the transverse direction of the hose, and the pinch valve mechanisms are arranged at both ends of the hose.

[0044] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0045] The overall structure of the extrusion peristaltic pump is as follows Figure 1 As shown, the pump head includes a housing 1, a base 2 and a front cover 3. A locking device 4 is provided on the front cover 3. The front cover 3 is hinged to the side of the housing 1 through a hinge 6, and the front cover 3 is fastened to the housing 1 through the locking device 4 and locked in position. The housing 1 is fixed on the base 2, and a handle 5 is provided on the housing 1 to facilitate the movement of the device. Among them, the front cover 3 plays a protective role on the internal structure of the entire peristaltic pump head.

[0046] Will Figure 1 The front cover 3 is removed, as shown in Figure 2 As shown, the transverse clamping mechanism 7 is arranged in the middle of the top plate 14 of the housing 1, and the pinch valve mechanism 8 is arranged at the upper and lower ends of the top plate 14. The transverse clamping mechanism 7 and the pinch valve mechanism 8 constitute a hose extrusion mechanism. The hose 9 is arranged vertically, and its outlet end 10 is at the top (the orientation is Figure 1 The compensating device 13 is arranged between the outlet end 10 and the pinch valve mechanism 8, close to one side of the pinch valve mechanism 8. The hose flow regulating device 12 is arranged between the outlet end 10 and the inlet end 11, close to the outlet end 10.

[0047] The driving device of the transverse clamping mechanism 7 is as follows Figure 3As shown, the transverse driving motor 15 drives the screw rod 16 to rotate through the transmission device 17, and the screw rod 16 drives the transverse clamping mechanism driving plate 18 to perform transverse reciprocating operation.

[0048] The drive device of the pinch valve mechanism 8 is as follows Figure 4 As shown, the valve driving motor 19 drives the outlet pinch valve driving plate 23 through the outlet pinch valve transmission device 20 to make a reciprocating motion; at the same time, the outlet pinch valve transmission device 20 is connected to the inlet pinch valve transmission device 21 through the connecting rod 22, so that the valve driving motor 19 can drive the two devices simultaneously. The inlet pinch valve transmission device 21 drives the inlet pinch valve driving plate 24 to make a reciprocating motion.

[0049] Figure 5 FIG. 2 is a schematic diagram of the planar structure of the hose extrusion mechanism composed of the transverse clamping mechanism 7 and the clamping valve mechanism 8. Figure 5 As shown, a fixed clamping plate 25 is arranged on the top plate 14, and a movable clamping plate 26 can move left and right under the drive of the transverse clamping mechanism driving plate 18, and the hose 9 is vertically placed between the fixed clamping plate 25 and the movable clamping plate 26; an inlet end clamping fixed block 29 is arranged at the inlet end 11 of the hose 9, and the inlet end clamping fixed block 29 is arranged on the top plate 14, and the corresponding inlet end clamping movable block 30 is arranged. The inlet end clamping movable block 30 moves left and right under the drive of the inlet end clamping valve driving plate 24 to close or open the hose 9; an outlet end clamping fixed block 27 is arranged at the outlet end 10 of the hose 9, and the outlet end clamping fixed block 27 is arranged on the top plate 14, and the corresponding outlet end clamping movable block 28 is arranged. The outlet end clamping movable block 28 moves left and right under the drive of the outlet end clamping valve driving plate 23 to close or open the hose 9.

[0050] A complete transmission process is as follows: the inlet clamping movable block 30 moves to the right, and the inlet clamping valve opens. The movable clamping plate 26 moves to the right, the compressed hose 9 is released, and the liquid enters the hose 9 from the inlet end 11; the inlet clamping movable block 30 moves to the left, and the inlet clamping valve is closed, then the outlet clamping movable block 28 moves to the right, the outlet clamping valve opens, and the movable clamping plate 26 moves to the left, compressing the hose 9, and the liquid inside the hose 9 is discharged from the outlet end 10, then the outlet clamping movable block 28 moves to the left, and the outlet clamping valve is closed; a complete transmission process is completed.

[0051] In order to prevent sanitary dead corners, the extrusion peristaltic pump uses a pinch valve to clamp or loosen the hose to achieve the opening and closing of the pipeline. The clamping or loosening process will cause changes in the volume of the pipeline, which is prone to dripping and inaccurate metering.

[0052] To address this problem, the present specification provides a compensation device in which the original passive clamp is set to be position-adjustable. If the compensation effect is weakened after replacing a hose of a different specification, the compensation effect can be increased by adjusting the position. Figure 6-8 shown.

[0053] like Figure 6-8 As shown, the compensation device 13 includes a compensation follower clamping block 31 and a compensation adjustment clamping assembly 32. The compensation follower clamping block 31 can move left and right, and its action can be synchronized with the outlet clamping movable block 28. The compensation adjustment clamping assembly 32 can adjust the clamping degree of the compensation device 13 on the hose 9. The detailed action process is as follows: the outlet clamping movable block 28 will generate a positive or negative impact when closing or releasing the hose 9. When the outlet clamping movable block 28 is closed or released, the compensation follower clamping block 31 releases or clamps the hose 9 to offset the impact and achieve the purpose of compensation.

[0054] Specifically, Figure 8 As shown, the half-section view of the compensation adjustment clamping assembly 32 may include a clamping block 33, a sliding shaft 36, an adjustment wheel 35 and an assembly housing 34. The sliding shaft 36 is arranged on the clamping block 33, and a slide groove 37 is arranged on the adjustment wheel 35, and the sliding shaft 36 can slide in the slide groove 37. The adjustment wheel 35 is hinged on the assembly housing 34. When the adjustment wheel 35 is rotated, the sliding shaft 36 slides along the slide groove 37. In particular, the slide groove 37 is a cam groove. When the sliding shaft 36 slides, the clamping block 33 integrated with the sliding shaft 36 extends or retracts with the forward or reverse rotation of the adjustment wheel 35. A scale line 38 is arranged on the adjustment wheel 35, which can be used to mark the position of the clamping block 33.

[0055] The position of the clamping block 33 can be changed to achieve the purpose of compensating for hoses 9 of different specifications.

[0056] As the core component of the extrusion peristaltic pump, the hose has dimensional deviations in manufacturing. When the extrusion peristaltic pump is used in parallel with multiple channels, the flow consistency of the multiple channels will produce flow deviations due to the dimensional deviations of the hose. To address this problem, the embodiment of this specification provides a hose flow regulating device, in which a pipe joint position regulating device is arranged in the axial direction of the hose. By adjusting the position of the pipe joint, the elastic extension of the hose is adjusted, thereby achieving the purpose of adjusting the liquid volume.

[0057] Specifically, Fig. 9 As shown, the hose flow regulating device 12 is disposed between the outlet end 10 and the inlet end 11 , close to the outlet end 10 .

[0058] like Fig.10As shown, the hose flow regulating device 12 includes a sheath bracket 39, a pipe joint 40 and a gear-adjusting sheath 41. The sheath bracket 39 is arranged on the top plate 14, and the hose 9 is connected to the pipe joint 40 through the inside of the gear-adjusting sheath 41, and the pipe joint 40 is engaged with the step 43 inside the gear-adjusting sheath 41. A bayonet 42 is arranged on the sheath bracket 39, and the gear-adjusting sheath 41 is mounted on the sheath bracket 39 through the bayonet 42.

[0059] like Fig.11 As shown, the gear shifting sleeve 41 is provided with a gear position 45 and a gear position mark 44. Fig.11 As shown, the gear-adjusting sleeve 41 can be set to three gears, and different gears can be set as needed.

[0060] The flow regulation process of the hose flow regulating device is as follows: Fig.12 When the liquid volume of the same specification hose 9 is different, the gear position can be changed by the gear-adjusting sheath 41. Different gear positions correspond to different stretching states of the hose 9, and different stretching states correspond to different liquid volume outputs. For example, the liquid volume output of the hose 9 is too large, and the gear position of the gear-adjusting sheath 41 is in the first gear. When the gear position is changed to the second gear, the hose 9 stretches, the liquid volume decreases, and the output liquid volume reaches the allowable range of the calibrated liquid volume difference, and the adjustment is completed.

[0061] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a device including a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such a device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the device including the element.

[0062] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. 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

1. An extrusion peristaltic pump, characterized in that: include: A shell, a transmission component, a transverse clamping mechanism and a pinch valve mechanism, wherein the transmission component is arranged inside the shell, the transverse clamping mechanism and the pinch valve mechanism are arranged on the top plate of the shell, the transverse clamping mechanism is used to clamp the hose transversely, and when working, the transmission component drives the transverse clamping mechanism to move back and forth along the transverse direction of the hose, thereby squeezing the hose; the pinch valve mechanism is arranged near both ends of the hose, and is used to clamp the hose.

2. The extrusion peristaltic pump according to claim 1, characterized in that: The transverse clamping mechanism comprises a fixed clamping plate and a movable clamping plate, wherein the fixed clamping plate is fixedly connected to the top plate, and the movable clamping plate is connected to the transmission component. When working, the hose is placed between the fixed clamping plate and the movable clamping plate.

3. The extrusion peristaltic pump according to claim 1, characterized in that: The pinch valve mechanism comprises an inlet pinch valve and an outlet pinch valve, and the inlet pinch valve and the outlet pinch valve are linked.

4. The extrusion peristaltic pump according to claim 3, characterized in that: The inlet end clamp valve comprises a clamp fixing block and a clamp movable block used in conjunction with each other. The clamp fixing block is fixedly connected to the top plate, and the hose is placed between the clamp fixing block and the clamp movable block.

5. The extrusion peristaltic pump according to claim 4, characterized in that: The extrusion peristaltic pump also includes: a compensation device, which is arranged on the outside of the tube clamping valve mechanism, and includes a follower clamp block and an adjustment clamping assembly. The adjustment clamping assembly is movably connected to the top plate. When working, the hose is placed between the follower clamp block and the adjustment clamping assembly, and the position of the adjustment clamping assembly can be adjusted.

6. The extrusion peristaltic pump according to claim 5, characterized in that: The adjustment clamping assembly includes: an adjustable clamping block, a sliding shaft, an adjustment wheel and an assembly housing; the assembly housing is fixedly connected to the top plate, the adjustment wheel is hinged on the assembly housing, the sliding shaft is arranged on the adjustable clamping block, the adjustment wheel is provided with a slide groove, and the sliding shaft can slide in the slide groove.

7. The extrusion peristaltic pump according to claim 5, characterized in that: The follow-up clamping block is linked with the tube clamping movable block of the outlet end tube clamping valve.

8. The extrusion peristaltic pump according to claim 6, characterized in that: The adjusting wheel is provided with engraved lines for marking the position of the adjustable clamping block.

9. The extrusion peristaltic pump according to claim 6, characterized in that: The slide groove is a cam groove.

10. The extrusion peristaltic pump according to claim 1, characterized in that: The extrusion peristaltic pump further comprises: a hose flow regulating device, which is arranged at the outlet end of the hose and fixed to the top plate, and is used to adjust the length of the hose.

11. The extrusion peristaltic pump according to claim 10, characterized in that: The hose flow regulating device includes: a sheath bracket, a pipe joint and a gear-adjusting sheath, the sheath bracket is arranged on the top plate, the hose passes through the inside of the gear-adjusting sheath and is connected to the pipe joint, the pipe joint is clamped with the gear-adjusting sheath, and the sheath bracket is clamped with the gear-adjusting sheath.

Images