TOGGLE-TYPE OPEN-CLOSE CLAMPING STRUCTURAL ASSEMBLY AND PUMP HEAD OF PERISTALTIC PUMP

Abstract

A toggle-type open-close clamping structural assembly and a pump head of a peristaltic pump comprising same. The toggle-type open-close clamping structural assembly comprises: a lower pipe clamp and an upper pipe clamp (1) that are oppositely arranged and that are used to form a pair of hose clamp hoops; an upper pressure block used for lifting and lowering to open and close; and a driving lever (4) used for enabling the upper pipe clamp (1) to follow the upper pressure block to lift, slip and follow-up. The driving lever (4) is pivotally connected to the upper pressure block. The upper pipe clamp (1) and one end of the driving lever (4) are overlappingly disposed in a clamping port reserved on the upper pressure block, and the other end of the driving lever (4) is abutted against a fixing part (5) that serves as fixing reference. In the lifting process of the upper pressure block, the upper pipe clamp (1) is driven to lift, and meanwhile, the driving lever (4) follows up and rises and lifts up the upper pipe clamp (1), so that the upper pipe clamp (1) is far away from the lower pipe clamp, thereby preventing the driving lever (4) from wear and tear and achieving simple and efficient replacement of hoses.

Claims

1. A toggle-type open-close clamping structural assembly, comprising a lower pipe clamp and an upper pipe clamp oppositely arranged to form a hose clamp hoop, an upper pressure block used for lifting and lowering to open and close, and further comprising: a driving lever used for enabling the upper pipe clamp to follow the upper pressure block to lift, slip and follow-up, the driving lever is pivotally connected to the upper pressure block to connect, the upper pipe clamp and one end of the driving lever are overlappingly disposed in a clamping port reserved on the upper pressure block, and the other end of the driving lever is abutted against a fixing part serving as fixing reference, the driving lever swings under an action of the fixing part, and the upper pipe clamp is lifted to generate a relative displacement between the upper pipe clamp and the upper pressure block, which is higher than a lifting position of the upper pressure block.

2. The toggle-type open-close clamping structural assembly according to claim 1, wherein the fixing part is disposed on a body, the body is glidingly matched with the upper pressure block, and a lower edge of the fixing part has a sliding surface for sliding of the driving lever, and in the lifting process of the upper pressure block, one end of the driving lever slides along the sliding surface, and meanwhile the other end of the driving lever lifts the upper pipe clamp.

3. (canceled)

4. The toggle-type open-close clamping structural assembly according to claim 1, wherein the upper pipe clamp passes through the groove and is opposite to the lower pipe clamp, and the upper pipe clamp and the groove are in clearance fit to form a sliding setting.

5. The toggle-type open-close clamping structural assembly according to claim 1, wherein the driving lever is pivotally connected in the groove through a pivot, one end of the driving lever extends under a top platform of the upper pipe clamp, and the driving lever guides and limits a vertical direction of the upper pipe clamp.

6. The toggle-type open-close clamping structural assembly according to claim 1, further comprising a return spring, the return spring is connected between the upper pipe clamp and the top of the groove, and the return spring pushes back the upper pipe clamp in the vertical direction.

7. The toggle-type open-close clamping structural assembly according to claim 1, wherein the driving lever comprises two driving lever arms, and the driving lever arms move synchronously around a central pivot.

8. A pump head of peristaltic pump, comprising the toggle-type open-close clamping structural assembly according to claim 1, further comprising a pump head body, and the pump head body isolates a hose path used to clamp a hose, wherein: the lower support and the upper pressure block are located on a same side of the body to form a peristaltic cavity for placing the hose, a hose path passes through an outer edge of the peristaltic cavity, both ends of the hose path are set at least one fixed part and corresponding toggle-type open-close clamping structural assembly, and the fixed part is located on the body.

9. The pump head of peristaltic pump according to claim 8, wherein the upper pipe clamp passes through the groove of the upper pressure block and is arranged opposite to the lower pipe clamp to form an intersection for hose clamp hoops.

10. The pump head of peristaltic pump according to claim 8, wherein the pump head body has an opening for the driving lever to pass out below the fixed part.

11. A pump head of peristaltic pump, comprising the toggle-type open-close clamping structural assembly according to claim 2, further comprising a pump head body, and the pump head body isolates a hose path used to clamp a hose, wherein: the lower support and the upper pressure block are located on a same side of the body to form a peristaltic cavity for placing the hose, a hose path passes through an outer edge of the peristaltic cavity, both ends of the hose path are set at least one fixed part and corresponding toggle-type open-close clamping structural assembly, and the fixed part is located on the body.

12. A pump head of peristaltic pump, comprising the toggle-type open-close clamping structural assembly according to claim 4, further comprising a pump head body, and the pump head body isolates a hose path used to clamp a hose, wherein: the lower support and the upper pressure block are located on a same side of the body to form a peristaltic cavity for placing the hose, a hose path passes through an outer edge of the peristaltic cavity, both ends of the hose path are set at least one fixed part and corresponding toggle-type open-close clamping structural assembly, and the fixed part is located on the body.

13. A pump head of peristaltic pump, comprising the toggle-type open-close clamping structural assembly according to claim 5, further comprising a pump head body, and the pump head body isolates a hose path used to clamp a hose, wherein: the lower support and the upper pressure block are located on a same side of the body to form a peristaltic cavity for placing the hose, a hose path passes through an outer edge of the peristaltic cavity, both ends of the hose path are set at least one fixed part and corresponding toggle-type open-close clamping structural assembly, and the fixed part is located on the body.

14. A pump head of peristaltic pump, comprising the toggle-type open-close clamping structural assembly according to claim 6, further comprising a pump head body, and the pump head body isolates a hose path used to clamp a hose, wherein: the lower support and the upper pressure block are located on a same side of the body to form a peristaltic cavity for placing the hose, a hose path passes through an outer edge of the peristaltic cavity, both ends of the hose path are set at least one fixed part and corresponding toggle-type open-close clamping structural assembly, and the fixed part is located on the body.

15. A pump head of peristaltic pump, comprising the toggle-type open-close clamping structural assembly according to claim 7, further comprising a pump head body, and the pump head body isolates a hose path used to clamp a hose, wherein: the lower support and the upper pressure block are located on a same side of the body to form a peristaltic cavity for placing the hose, a hose path passes through an outer edge of the peristaltic cavity, both ends of the hose path are set at least one fixed part and corresponding toggle-type open-close clamping structural assembly, and the fixed part is located on the body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a side view of the structure of a toggle-type open-close clamp.

[0023] FIG. 2 is an axial view of the structure of a toggle-type open-close clamp.

[0024] FIG. 3 is a closed structure diagram of a pressure block of a peristaltic pump.

[0025] FIG. 4 is a lifting structure diagram of a pressure block of a peristaltic pump.

REFERENCE NUMERAL DESCRIPTION

[0026] Upper pipe clamp 1, Bending part 2, Groove 3, Driving lever 4, Fixing part 5, Return spring 6, Opening 7.

DETAILED DESCRIPTION OF EMBODIMENTS

[0027] The present invention is further described below with reference to FIGS. 1-4:

Embodiment 1

[0028] As shown in FIG. 1, a toggle-type open-close clamping structural assembly is provided, which includes a lower pipe clamp and an upper pipe clamp 1 that are oppositely arranged and that are used to form a pair of hose clamp hoops, an upper pressure block used for lifting and lowering to open and close, further includes a driving lever 4 used for enabling the upper pipe clamp to follow the upper pressure block to lift, slip and follow-up, and the driving lever has two driving lever arms, an included angle between the driving lever arms is less than or equal to 180°.

[0029] The driving lever is pivotally connected to the upper pressure block to connect, the upper pipe clamp and one end of the driving lever are overlappingly disposed in a clamping port reserved on the upper pressure block, and the other end of the driving lever is abutted against a fixing part serving as fixing reference, the fixing part 5 is a fixed and protruding part for acting on the driving lever.

[0030] The fixing part is glidingly matched with the upper pressure block, the upper pressure block slides vertically. A lower edge of the fixing part has a sliding surface for sliding of the driving lever, and in the lifting process of the upper pressure block, one end of the driving lever slides along the sliding surface, and meanwhile the other end lifts the upper pipe clamp. In a lifting process of the upper pressure block, the upper pipe clamp is driven to lift and lower, and meanwhile, the driving lever follows up and rises and lifts up the upper pipe clamp, to cause the upper pipe clamp far away from the lower pipe clamp.

[0031] As shown in FIG. 1 and FIG. 2, a groove is disposed on the upper pressure block for limiting the upper pipe clamp and the driving lever, the top of the upper pipe clamp moves to realize the pushing action, and the pushing structure is limited in the groove 3. The pushing structure includes the top of the upper pipe clamp or a bending part constructed at an upper part, and the bending part 2 is bent outward and interlocked in the groove 3. The upper pipe clamp passes through the groove and is opposite to the lower pipe clamp, and the upper pipe clamp and the groove are in clearance fit to form a sliding setting. The driving lever is pivotally connected in the groove through a pivot, one end of the driving lever extends into a reserved chute under the bending part, and the driving lever guides and limits a vertical direction of the upper pipe clamp. A complementary staggered shape is formed outside the junction of the bending part and the driving lever, the bending part extends between the pivot and an inner wall of the groove, and the upper pipe clamp is limited between the driving lever and the inner wall of the groove.

[0032] In order to ensure excellent resilience, a return spring is also provided. The return spring is connected between the upper pipe clamp and the top of the groove, and the return spring 6 pushes back the upper pipe clamp in the vertical direction. The bottom surface of the fixing part is a slope consistent with a gradient of an inclined plane formed by a path passed by the other end of the driving lever during the sliding process.

[0033] Embodiment 2, a pump head of peristaltic pump is provided, which includes the toggle-type open-close clamping structural assembly mentioned above, including a pump head body, and the pump head body isolates a hose path used to clamp a hose. The hose path is a placement path with openings on both sides and passing through a central rolling section. The upper pressure block is fitted to a reserved opening of the pump head body, and has at least one fixed part on the pump head body or a fixed part is set on both sides of the pump head body. Each fixed part corresponds to a set of the toggle-type open-close clamping structural assembly, and the toggle-type open-close clamping structural assembly corresponds to either side of the pump head. The fixed part is located on the body, the pump head body has an opening 7 for the driving lever to pass out below the fixed part, and an opening height is consistent with the displacement of a vertical height of the driving lever arm.