Flip type peristaltic pump head

Abstract

The embodiment of the utility model discloses a flip type peristaltic pump head which comprises a pressing block assembly, a roller assembly, a body and a pipe clamp, the pressing block assembly is located above the body and rotationally connected with the body, the body is used for supporting the roller assembly, and the pipe clamp is fixed to the body and used for fixing a pump pipe. According to the scheme, the pressing block assembly is designed to be of a flip type structure, the opening space is not limited, and a pump pipe with a larger diameter can be assembled and disassembled.

Description

Technical Field

[0001] The present application relates to the technical field of peristaltic pumps, and in particular to a flip-top peristaltic pump head. Background Art

[0002] A peristaltic pump is like squeezing a fluid-filled hose with your fingers. As the fingers slide forward, the fluid in the tube moves forward. The peristaltic pump also works on the same principle, except that the fingers are replaced by rollers. The fluid is pumped by alternately squeezing and releasing the pump's elastic delivery hose, just like squeezing a hose with two fingers. As the fingers move, negative pressure is formed in the tube, and the liquid flows.

[0003] The peristaltic pump head is an important component of the peristaltic pump. It is a mechanical device that realizes the function of continuous squeezing of the hose and completes fluid transportation. The peristaltic pump head is generally composed of a pressure block, a support, a main body, and a roller assembly. The pressure block is mainly used to compress the hose. In the existing technology, the peristaltic pump head cover is mostly opened by sliding the cover up and down or opening it to one side. This type of structure has limited opening space and is affected by the tube clamp, which is not convenient when loading and unloading pump tubes with slightly larger diameters. Summary of the Invention

[0004] To solve the above technical problems, the embodiments of this specification are implemented as follows:

[0005] A flip-top peristaltic pump head provided in an embodiment of this specification includes: a pressure block assembly, a roller assembly, a body and a tube clamp. The pressure block assembly is located above the body and is rotatably connected to the body. The body is used to support the roller assembly. The tube clamp is fixed on the body to fix the pump tube.

[0006] Optionally, the pressing block assembly and the body may be hinged via a pin.

[0007] Optionally, the pressure block assembly may include: a pressure block seat and a pressure block, a pin hole is provided on the pressure block seat, and the pin hole is used in conjunction with the pin shaft; the pressure block is provided below the pressure block seat, the bottom of the pressure block is an arc surface, the pressure block seat and the pressure block are connected by an adjusting bolt, and the adjusting bolt is limited by a retaining spring.

[0008] Optionally, a locking groove may be provided on the pressure block seat, and a ball plunger may be provided on the main body, and the locking groove and the ball plunger are used in conjunction with each other.

[0009] Optionally, the pressure block assembly may further include a guide column, which is press-fitted onto the pressure block. A guide hole is provided on the pressure block seat. The guide column and the guide hole cooperate to limit the movement of the pressure block perpendicular to the pump tube.

[0010] Optionally, the pressing block assembly may further include a spring, wherein the spring is sleeved on the guide post, and the spring is always in a compressed state between the pressing block and the pressing block seat.

[0011] Optionally, the pressure block seat can be provided with a button, a lock hook and a lock buckle, the button and the lock hook are rigidly connected, the lock hook is provided in a lock hook hole inside the pressure block seat, the lock buckle is fixed to the front support top of the main body, and the lock hook and the lock buckle are used in combination.

[0012] Optionally, a return spring is installed in the lock hook hole, and the tail end of the return spring is fixedly connected to a limit plate, and the limit plate is fixed on the pressure block seat.

[0013] Optionally, the pipe clamp may include: an upper pipe clamp and a lower pipe clamp, the upper pipe clamp and the lower pipe clamp are hinged by a rotating pin, the lower pipe clamp is fixed to the bottom plate of the main body, a ball screw is provided on the bottom plate, and the ball screw is used in conjunction with a groove provided at a corresponding position of the upper pipe clamp to achieve the closing and locking of the pipe clamp.

[0014] Optionally, a return spring may be placed between the bottom surface of the lower tube clamp and the bottom plate, and a limit pin is provided at the upper end of the lower tube clamp, and the limit pin is fixed to the bottom plate.

[0015] Optionally, the body may include: a front support and a base, the front support is mounted on the base, and the roller assembly is located between the front support and the base.

[0016] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:

[0017] 1. This solution designs the briquetting assembly into a flip-top structure, which has no restricted opening space and can be used to load and unload pump tubes with slightly larger diameters.

[0018] 2. The pressing block assembly and the pipe clamp are set independently. After placing the pump pipe on the roller, fix the pump pipe with the pipe clamp and directly buckle the pressing block. The stroke of the adjusting structure of the pressing block can meet the transmission performance of pump pipes with different wall thicknesses.

[0019] 3. The pressing block seat and the pressing block are connected by adjusting bolts, and the pressing tube gap of the pressing block can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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:

[0021] Figure 1A schematic diagram of the three-dimensional structure of a flip-top peristaltic pump head provided in an embodiment of this specification;

[0022] Figure 2 for Figure 1 Open the overall structural diagram of the briquetting assembly;

[0023] Figure 3 Schematic diagram of the three-dimensional structure of the pressing block assembly provided in the embodiment of this specification Figure 1 ;

[0024] Figure 4 Schematic diagram of the three-dimensional structure of the pressing block assembly provided in the embodiment of this specification Figure 2 ;

[0025] Figure 5 A cross-sectional view of a compact assembly provided in an embodiment of this specification;

[0026] Figure 6 A partial structural cross-sectional view of a compression block assembly provided in an embodiment of this specification;

[0027] Figure 7 A schematic diagram of the structure of the pipe clamp provided in the embodiment of this specification;

[0028] Reference numerals:

[0029] 1. Base plate; 2. Pipe clamp; 3. Pump pipe; 4. Rear support; 5. Pressure block assembly; 6. Ball plunger; 7. Front support; 8. Roller assembly; 9. Locking buckle; 10. Ball screw; 11. Pin; 201. Upper pipe clamp; 202. Lower pipe clamp; 203. Limit pin; 204. Return spring; 206. Rotating pin; 501. Pressure block seat; 502. Button; 503. Adjusting bolt; 504. Pin hole; 505. Pressure block; 506. Locking groove; 507. Circlip; 508. Spring; 509. Guide column; 510. Limit plate; 512. Return spring; 513. Lock hook. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] The following describes in detail the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0032] The overall structure of the flip-top peristaltic pump head provided by this solution is as follows Figure 1-2As shown, the flip-top peristaltic pump head includes: a pressure block assembly 5, a roller assembly 8, a body and a tube clamp 2, wherein the pressure block assembly 5 is located above the body and is rotatably connected to the body. Specifically, it can be hinged to the body through a pin 11, so that the pressure block assembly 5 can rotate around the pin 11 to realize flip-top opening and closing.

[0033] Among them, the main body includes: a front support 7 and a base, the base is L-shaped, including a rear support 4 and a bottom plate 1, wherein the rear support 4 and the bottom plate 1 can be formed as one piece, the front support 7 and the rear support 4 are installed on the bottom plate 1, and the roller assembly 8 is located between the front support 7 and the rear support 4.

[0034] The pipe clamps 2 are mounted on both sides of the base plate 1 and rotate open and close around the rotating pin to fix the pump pipe 3 on the roller assembly 8. The pipe clamps 2 act independently to clamp the pump pipe 3, which is reliable and does not take up space for pipe replacement.

[0035] Since the pressing block assembly is independently provided with the tube clamp, the pressing block assembly is an integral flip-up structure and is independently provided with the tube clamp, the tube replacement space is increased, and the replacement of pump tubes with larger diameters is convenient.

[0036] A ball plunger 6 is mounted on the top of the rear support 4. When the pressure block assembly 5 is fully opened, the steel ball of the ball plunger 6 engages the locking groove 506 of the pressure block seat 501, locking the pressure block assembly 5 and facilitating tube replacement. When opening the lid, pressing the button 502 disengages the locking hook 513 of the pressure block assembly 5 from the lock catch 9, which automatically resets after release. The lock catch 9 is screwed to the top of the front support 7. When closing the lid, once the pressure block assembly 5 is fully engaged, it automatically locks to prevent it from popping open.

[0037] like Figure 3-6 As shown, the pressure block assembly 5 mainly includes: a pressure block seat 501, a pressure block 505, a button 502, an adjusting bolt 503, a guide column 509 and a spring 508. The pressure block seat 501 has a pin hole 504 that rotates around the pin shaft 11 and a locking groove 506. The locking groove 506 is a groove with the same diameter as the steel ball of the ball plunger 6, which is used to embed and lock the steel ball of the ball plunger 6.

[0038] The pressure block 505 is positioned below the pressure block seat 501. The bottom of the pressure block 505 is curved. The pressure block seat 501 and the pressure block 505 are connected by an adjusting bolt 503, which is restrained by a retaining spring. After passing through the pressure block seat 501, the adjusting bolt 503 is restrained by a retaining spring 507 and connected to the threaded hole at the top of the pressure block 505. As the adjusting bolt 503 is rotated, the retaining spring 507 restrains the adjusting bolt 503, causing the pressure block 505 to move upward or downward, thereby adjusting the pressure tube gap.

[0039] The pressure tube gap is directly adjusted by adjusting the position of the pressure block through the adjusting bolt. The adjustment displacement and accuracy are only related to the pitch and thread length of the adjusting bolt. According to needs, it is not only convenient to control the pressure tube gap to realize the replacement of hoses with different wall thicknesses, but also can fine-tune the peristaltic pump outlet pressure.

[0040] The guide post 509 is pressed onto the pressure block 505. When the pressure block 505 moves up and down, the guide post 509 slides along the guide hole on the pressure block seat 501 to ensure that the pressure block 505 moves vertically. A spring 508 is installed on the guide post 509, which is always in a compressed state between the pressure block 505 and the pressure block seat 501 to ensure that the pressure block 505 is in a stable state.

[0041] The pressure block seat 501 is equipped with a button 502, a locking hook 513, and a lock catch 9. The button 502 and the locking hook 513 are rigidly connected, ensuring that the locking hook 513 is activated simultaneously when the button 502 is pressed. The locking hook 513 is mounted in a locking hook hole within the pressure block seat 501. The lock catch 9 is fixed to the top of the front support 7. The locking hook 513 and the lock catch 9 work together. A return spring 512 is installed in the locking hook hole. The end of the return spring 512 has a limit plate 510 fixed to the pressure block seat 501. When the button 502 is pressed, the locking hook 513 moves, disengaging the lock catch 9 to unlock the door. When the button 502 is released, the lock hook 513 is reset by the action of the return spring 512.

[0042] like Figure 7 As shown, pipe clamp 2 comprises an upper pipe clamp 201 and a lower pipe clamp 202. Lower pipe clamp 202 is fixed to base plate 1. Upper and lower pipe clamps 201 and 202 are hingedly connected by a rotating pin 206. Upper pipe clamp 201 can rotate about rotating pin 206 to open and close. Base plate 1 is provided with a ball screw 10, which cooperates with a groove provided in a corresponding position on upper pipe clamp 201 to close and lock pipe clamp 2. A return spring 204 is placed between the bottom surface of lower pipe clamp 202 and base plate 1. Lower pipe clamp 202 has a limit pin 203 at its upper end. Limit pin 203 is fixed to base plate 1 and limits the position of lower pipe clamp 202.

[0043] Working Principle: When the upper tube clamp 201 is engaged and compresses the pump tube 3, the lower tube clamp 202 is forced to move, preventing complete compression and flow interruption. Once engaged, the steel ball of the ball screw 10 mounted on the base plate 1 engages with the corresponding groove in the upper tube clamp 201, closing and locking the upper tube clamp 201. When the upper tube clamp 201 is opened, the steel ball of the ball screw 10 retracts, releasing the lock. The upper tube clamp 201 opens, releasing the pump tube 3, and the lower tube clamp 202, under the elastic force of the return spring 204, moves upward to stop at the limit pin 203.

[0044] This solution adopts a flip-up type to open the pressure block assembly, which avoids the influence of the tube clamp on the operating space when disassembling and assembling the pump tube, and increases the space for tube replacement; the pressure tube gap adjustment stroke is large, which meets the requirements of the same pump head for hoses of different wall thicknesses; the tube clamp and the pressure block are set independently, and the pump tube is first fixed to the roller assembly and then the pressure block assembly is buckled, making it easy to achieve one-handed tube replacement operation.

[0045] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a device comprising 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 further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the device comprising the element.

[0046] The foregoing is merely 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 modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A flip-top peristaltic pump head, characterized in that: include: A pressure block assembly, a roller assembly, a main body and a pipe clamp, wherein the pressure block assembly is located above the main body and is rotatably connected to the main body, the main body is used to support the roller assembly, the pipe clamp is fixed on the main body and is used to fix the pump pipe, the pipe clamp includes: an upper pipe clamp and a lower pipe clamp, the upper pipe clamp and the lower pipe clamp are hinged by a rotating pin, the lower pipe clamp is fixed to the bottom plate of the main body, a ball screw is provided on the bottom plate, the ball screw is used in conjunction with the groove provided at the corresponding position of the upper pipe clamp to realize the closing and locking of the pipe clamp.

2. The peristaltic pump head according to claim 1, characterized in that: The pressing block assembly and the body are hinged via a pin.

3. The peristaltic pump head according to claim 2, characterized in that: The pressure block assembly includes: a pressure block seat and a pressure block, a pin hole is provided on the pressure block seat, and the pin hole is used in conjunction with the pin shaft; the pressure block is arranged below the pressure block seat, and the bottom of the pressure block is an arc surface. The pressure block seat and the pressure block are connected by an adjusting bolt, and the adjusting bolt is limited by a retaining spring.

4. The peristaltic pump head according to claim 3, characterized in that: A locking groove is provided on the pressure block seat, and a ball plunger is provided on the body. The locking groove and the ball plunger are used in conjunction with each other.

5. The peristaltic pump head according to claim 3, characterized in that: The pressing block assembly further comprises a guide post, which is press-fitted onto the pressing block. A guide hole is provided on the pressing block seat. The guide post and the guide hole cooperate to limit the movement of the pressing block perpendicular to the pump tube.

6. The peristaltic pump head according to claim 5, characterized in that: The pressing block assembly further comprises a spring, which is sleeved on the guide post and is always in a compressed state between the pressing block and the pressing block seat.

7. The peristaltic pump head according to claim 5, characterized in that: The pressure block seat is provided with a button, a lock hook and a lock buckle. The button and the lock hook are rigidly connected. The lock hook is arranged in the lock hook hole inside the pressure block seat. The lock buckle is fixed to the front support top of the main body. The lock hook and the lock buckle are used in combination.

8. The peristaltic pump head according to claim 7, characterized in that: A return spring is installed in the lock hook hole, and the tail end of the return spring is fixedly connected to a limit plate, and the limit plate is fixed on the pressure block seat.

9. The peristaltic pump head according to claim 2, characterized in that: A return spring is placed between the bottom surface of the lower pipe clamp and the bottom plate. A limit pin is provided at the upper end of the lower pipe clamp, and the limit pin is fixed to the bottom plate.

10. The peristaltic pump head according to claim 1, characterized in that: The body comprises a front support and a base, the front support is mounted on the base, and the roller assembly is located between the front support and the base.

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