Pinch valve with damping structure

Abstract

The utility model discloses a pinch valve with a damping structure, which comprises a shell, a pipe seat, a pressing piece and a damping piece, and a linear driving part is arranged in the shell; the pipe seat is fixedly connected to the shell, and a pipe body capable of opening and closing a flow path is arranged in the pipe seat; the pressing piece is located in the pipe base and can move in the direction close to or away from the pipe body under the action of the linear driving part. The damping piece is located in the pipe base and abuts against the side, away from the pressing piece, of the pipe body. According to the utility model, the abrasion and damage degree of the pipe body caused by overlarge closing impact force can be effectively inhibited.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve structure technical field especially relates to a pipe clamp valve with damping structure. BACKGROUND

[0002] Pipe clamp valve, also known as pipe clamp valve, pipe pressing valve, air bag valve, clamp valve, is driven by pneumatic, electric, manual or hydraulic drive mode extrusion pipe body, to achieve the effect of opening and closing or adjusting, wherein, pipe body is an important part of pipe clamp valve, usually made of rubber and other elastic materials. The inside of the pipe body is provided with a flow path, when the pipe body is deformed under the action of external force, the flow path will appear open or closed or flow change state.

[0003] In the prior art, the closing of the pipe body is usually driven by an electromagnetic or pneumatic cylinder to move the pressing member to extrude the pipe body between the pipe seat and the pressing member, but the pressing member will generate a large impact force on the pipe body when moving, which can cause wear and even damage to the pipe body after long time operation. UTILITY MODEL CONTENT

[0004] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide a pipe clamp valve with damping structure, which can effectively inhibit the wear and damage of the pipe body caused by excessive closing impact force.

[0005] In order to achieve the above purpose, the utility model adopts the technical scheme of: a pipe clamp valve with damping structure, comprising

[0006] A housing is provided with a linear drive part inside;

[0007] A pipe seat is fixedly connected to the housing, and a pipe body capable of opening and closing the flow path is provided inside;

[0008] A pressing member is located in the pipe seat and can move towards or away from the pipe body under the action of the linear drive part;

[0009] A damping member is located in the pipe seat and abuts on the side of the pipe body away from the pressing member.

[0010] The pipe clamp valve with damping structure has the following advantages:

[0011] The linear drive part drives the pressing member to move towards (or away from) the pipe body to extrude (or release) the pipe body, thereby realizing the closing (or opening) of the flow path; during the extrusion of the pipe body by the pressing member, one side of the pipe body is extruded by the pressing member, while the other side is damped by the damping member, which can effectively weaken or buffer the extrusion impact force of the pressing member on the pipe body, making the closing action of the pipe body more gentle, and thereby effectively inhibiting the wear and damage of the pipe body caused by excessive closing impact force.

[0012] Further, the damping member comprises a damping body, a damping spring, one end of the damping body abuts on the pipe body, the other end of the damping body is provided with a limiting accommodating groove, and the damping spring is located in the limiting accommodating groove and abuts on the pipe seat at two ends.

[0013] Further, the pipe seat is provided with a first chamber and a second chamber which are communicated with each other, the pressing member is located in the first chamber, the damping member is located in the second chamber, and a limiting step for limiting the position of the damping member is formed at the joint of the first chamber and the second chamber.

[0014] Further, when the pipe body is in the state of closing the flow path, a gap is left between the damping member and the limiting step. The gap ensures the slight movement of the damping member in the second chamber, so as to alleviate the extrusion impact force on the pipe body.

[0015] Further, the pipe seat comprises a seat body which is through from top to bottom, one end of the seat body is fixed on the shell, and the other end of the seat body is detachably connected with a top cover. The detachable connection between the seat body and the top cover facilitates the assembly and maintenance of the damping member.

[0016] Further, the pressing member comprises an extrusion pad, one end of the extrusion pad is provided with an extrusion plane for contacting the pipe body, and the other end of the extrusion pad is connected with the linear driving part. The extrusion pad is made of rubber material, which can reduce the extrusion impact force on the pipe body to a certain extent.

[0017] Further, gaps are left between the two sides of the extrusion pad which are perpendicular to the moving direction of the extrusion pad and the inner wall of the first chamber. In this way, the extrusion pad can avoid friction with the first chamber during movement, and the smoothness of the movement of the extrusion pad is ensured.

[0018] Further, the linear driving part comprises an electromagnetic coil, a fixed iron core, a movable iron core and a driving spring, the driving spring is located between the fixed iron core and the movable iron core, the electromagnetic coil is wound outside the movable iron core and is used to drive the movable iron core to move towards or away from the fixed iron core under the action of electricity, and the movable iron core is connected with the pressing member.

[0019] Further, one side of the movable iron core which faces the pressing member is provided with a protrusion, and the pressing member is provided with an embedding groove for embedding the protrusion. The cooperation between the protrusion and the embedding groove ensures the consistency of the movement of the pressing member and the movable iron core, and also guides the movement of the pressing member.

[0020] Further, the fixed iron core is provided with a wedge-shaped slot on one side facing the movable iron core, and the movable iron core is provided with a wedge-shaped block matched with the wedge-shaped slot. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of the pinch valve of the embodiment of the utility model;

[0022] Figure 2 It is a structure schematic view of the pinch valve of the embodiment of the utility model; Figure 1 It is a sectional view of A-A direction in the pinch valve of the embodiment of the utility model;

[0023] Figure 3 It is a structure schematic view of the pinch valve of the embodiment of the utility model; Figure 2 It is a local enlarged view of B part in the pinch valve of the embodiment of the utility model.

[0024] Figure 4 It is a structure schematic view of the linear drive part of the embodiment of the utility model;

[0025] Figure 5 It is a structure schematic view of the linear drive part of the embodiment of the utility model; Figure 4 It is a local enlarged view of B part in the pinch valve of the embodiment of the utility model.

[0026] In the drawing:

[0027] 1 - shell, 2 - pipe seat, 21 - limiting step, 22 - seat body, 23 - top cover, 3 - pressing piece, 4 - damping piece, 41 - damper body, 411 - limiting container groove, 42 - damping spring, 5 - pipe body, 6 - linear drive part, 61 - electromagnetic coil, 62 - fixed iron core, 621 - wedge-shaped slot, 63 - movable iron core, 631 - lug, 632 - wedge-shaped block, 64 - drive spring. DETAILED DESCRIPTION

[0028] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and features of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is defined more clearly and explicitly.

[0029] EMBODIMENT

[0030] Referring to the drawings, Figures 1-3 The utility model discloses a pinch valve with damping structure, including shell 1, pipe seat 2, pressing piece 3, damping piece 4, wherein, the linear drive part 6 is established in the shell 1, the pipe seat 2 is fixedly connected on the shell 1, and the pipe body 5 that can open and close flow path is established in it. The pressing piece 3 is located in the pipe seat 2 and can move to the direction close to or away from the pipe body 5 under the action of the linear drive part 6. The damping piece 4 is located in the pipe seat 2 and abuts on the side of the pipe body 5 away from the pressing piece 3.

[0031] When the flow path is closed, the straight driving part 6 drives the pressing part 3 to move towards the pipe body 5, so that the pressing part 3 extrudes on the pipe body 5, the pipe body 5 is deformed and the flow path is closed, and the extrusion impact force is transmitted to the damping part 4, the damping part 4 weakens and buffers the extrusion impact force of the pressing part 3 on the pipe body 5, so that the action of closing the flow path of the pipe body 5 is more moderate, and the wear phenomenon of the pipe body 5 caused by the excessive extrusion impact force is avoided.

[0032] In some embodiments, referring to the accompanying drawings Figure 3 As shown, the damping part 4 comprises a damper body 41 and a damping spring 42, one end of the damper body 41 abuts against the pipe body 5, and the other end is provided with a limiting container groove 411. The damping spring 42 is located in the limiting container groove 411, and the two ends of the damping spring 42 abut against the limiting container groove 411 and the pipe seat 2 respectively.

[0033] It should be noted that the arrangement direction of the damping spring 42 is consistent with the movement direction of the pressing part 3. When the flow path is closed, the pipe body 5 is subjected to the extrusion impact force of the pressing part 3, the pipe body 5 is deformed to close the flow path, and the extrusion impact force can be transmitted to the damper body 41 due to the contact between the damper body 41 and the pipe body 5, and the damper body 41 is driven to move slightly, thereby slowing down the deformation action of the pipe body 5, and achieving the effect of moderating the extrusion impact force; due to the slight movement of the damper body 41, the damping spring 42 can be compressed and release the received extrusion impact force; when the flow path is opened, the pipe body 5 is no longer subjected to the extrusion of the pressing part 3, at this time the pipe body 5 can be reset to open the flow path, and the damping spring 42 can drive the damper body 41 to reset, so that the damper body 41 moves to the initial position.

[0034] In order to limit the movement range of the damper body 41, in some embodiments, the pipe seat 2 is provided with a first chamber and a second chamber which are in communication with each other, wherein the pressing part 3 is located in the first chamber, the damping part 4 is located in the second chamber, and the junction of the first chamber and the second chamber forms a limiting step 21 for limiting the position of the damping part 4. Further, when the pipe body 5 is in the state of closing the flow path, a gap is left between the damping part 4 and the limiting step 21. The gap ensures the slight movement of the damping part 4 in the second chamber, so as to moderate the extrusion impact force on the pipe body 5.

[0035] Further, referring to the accompanying drawings Figure 2 As shown, the pipe seat 2 comprises a seat body 22 which penetrates through the top and bottom, one end of the seat body 22 is fixedly connected to the shell 1, and the other end is detachably connected with a top cover 23. The seat body 22 is provided with a first chamber and a second chamber, and the second chamber is located on the side close to the top cover 23. The seat body 22 and the top cover 23 are provided to realize the quick disassembly of the pipe seat 2, so as to facilitate the assembly and maintenance of the damping part 4.

[0036] In some embodiments, the pressure member 3 includes a compression pad, one end of which has a compression surface for contacting the tube body 5, and the other end is connected to the linear drive unit 6. The compression pad is made of rubber, which can reduce the compression impact force on the tube body 5 to a certain extent through its material properties, thereby reducing the wear of the tube body 5.

[0037] Furthermore, gaps are left between the extrusion pad and the inner wall of the first chamber on both sides perpendicular to its direction of movement. This design prevents friction between the extrusion pad and the first chamber during movement, ensuring smooth movement of the extrusion pad.

[0038] In some embodiments, see Appendix Figure 4 As shown, the linear drive unit 6 includes an electromagnetic coil 61, a fixed iron core 62, a movable iron core 63, and a drive spring 64; the drive spring 64 is located between the fixed iron core 62 and the movable iron core 63. The electromagnetic coil 61 is wound around the outside of the movable iron core 63 to drive the movable iron core 63 to move closer to or away from the fixed iron core 62 under the action of electricity. The fixed iron core 62 is fixed to the housing 1, and the movable iron core 63 is connected to the pressure member 3. When energized, the movable iron core 63 moves towards the fixed iron core 62 against the force of the drive spring 64, and the pressure member 3 moves away from the tube body 5, thus opening the flow path; when de-energized, the movable iron core 63 moves away from the fixed iron core 62 under the reset action of the drive spring 64, and the pressure member 3 moves towards the tube body 5, thus closing the flow path.

[0039] Since there are gaps between both sides of the pressure member 3 and the first chamber, in order to ensure the stability of the movement direction of the pressure member 3, in some embodiments, the movable iron core 63 is provided with a protrusion 631 on the side facing the pressure member 3, and the pressure member 3 is provided with a groove for embedding the protrusion 631. The cooperation between the protrusion 631 and the groove ensures the consistency of movement between the pressure member 3 and the movable iron core 63, and also limits and guides the movement of the pressure member 3.

[0040] In some embodiments, see Appendix Figure 5 As shown, the fixed iron core 62 has a wedge-shaped groove 621 on the side facing the movable iron core 63, and the movable iron core 63 has a wedge-shaped block 632 that matches the wedge-shaped groove 621. The inclined surface of the wedge-shaped groove 621 and the wedge-shaped block 632 can guide the movement direction of the movable iron core 63. Furthermore, the cross-section of the wedge-shaped groove 621 is trapezoidal.

[0041] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A pinch valve with a shock absorbing structure, characterized by: Comprising A housing, a linear drive part is arranged in the housing; A tube base is fixedly connected to the housing, and a tube body capable of opening and closing a flow path is arranged in the tube base; A pressing part is arranged in the tube base and is capable of moving towards or away from the tube body under the action of the linear drive part; A damping part is arranged in the tube base and abuts against one side of the tube body away from the pressing part.

2. The pinch valve with a shock absorbing structure of claim 1, wherein: The damping part comprises a damper body and a damping spring, one end of the damper body abuts against the tube body, and the other end is provided with a limiting groove; the damping spring is arranged in the limiting groove and abuts against the limiting groove and the tube base at both ends.

3. The clamp tube valve with a damping structure according to claim 1, characterized in that: The tube base is provided with a first chamber and a second chamber which are in communication with each other, the pressing part is arranged in the first chamber, and the damping part is arranged in the second chamber, and a limiting step for limiting the position of the damping part is formed at the junction of the first chamber and the second chamber.

4. The clamp tube valve with a damping structure according to claim 3, characterized in that: When the tube body is in a state of closing the flow path, a gap is left between the damping part and the limiting step.

5. The clamp tube valve with a damping structure according to claim 1, characterized in that: The tube base comprises a seat body which penetrates up and down, one end of the seat body is fixedly connected to the housing, and the other end is detachably connected with a top cover.

6. The pinch valve with a damping structure according to any one of claims 1-5, characterized in that: The pressing part comprises a pressing pad, one end of the pressing pad is provided with a pressing plane for contacting the tube body, and the other end is connected with the linear drive part.

7. The clamp tube valve with a damping structure according to claim 6, characterized in that: Gaps are left between both sides of the pressing pad perpendicular to the moving direction of the pressing pad and the inner wall of the first chamber.

8. The clamp tube valve with a damping structure according to claim 1, characterized in that: The linear drive part comprises an electromagnetic coil, a fixed core, a movable core, and a drive spring; the drive spring is arranged between the fixed core and the movable core; the electromagnetic coil is arranged outside the movable core and is used to drive the movable core to move towards or away from the fixed core under the action of electricity; and the movable core is connected with the pressing part.

9. The clamp tube valve with a damping structure according to claim 8, characterized in that: One side of the movable core facing the pressing part is provided with a protrusion, and the pressing part is provided with an embedding groove for embedding the protrusion.

10. The clamp tube valve with a damping structure according to claim 8, characterized in that: One side of the fixed core facing the movable core is provided with a wedge-shaped groove, and the movable core is provided with a wedge-shaped block matched with the wedge-shaped groove.

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