pinch valve

Abstract

The application provides a clamp valve, wherein the main body comprises a clamp valve sleeve and an end cover, the clamp valve sleeve is provided with a positioning part, and a clamp groove for placing a pipeline is formed in the side part of the clamp valve sleeve; a pressure head is drivingly connected with a driving member and is movable in the clamp valve sleeve under the driving of the driving member, the pressure head is jointly extruded with the positioning part to extrude the pipeline when moving towards the positioning part; the protective cover comprises a rotating part, a shielding part and a limiting part which are sequentially arranged, the limiting part is rotatably connected with the clamp valve sleeve, the limiting part is provided with an elastic opening with an adjustable inner diameter size, and the elastic opening is detachably clamped with the clamp valve sleeve; when the protective cover is rotated to clamp the elastic opening with the clamp valve sleeve, the shielding part shields the notch of the clamp groove; after the elastic opening is separated from the clamp valve sleeve, the protective cover can be rotated to the shielding part to avoid the notch of the clamp groove. The clamp valve provided by the application avoids the pipeline from falling off from the notch of the mounting groove of the clamp valve, prevents foreign matters from entering the clamp valve from the notch of the mounting groove and clamps the hands of the operating personnel.

Description

Technical Field

[0001] This application relates to the field of automation equipment technology, and in particular to a clamp valve. Background Technology

[0002] Pinch valves are commonly used in automated equipment to control the flow of fluid within pipelines. Located on the outside of the pipeline, a pinch valve cuts off the flow path when it squeezes the pipe, and resumes flow after the valve releases its pressure.

[0003] In existing technical solutions, the pinch valve has an installation groove, and the pipeline is installed into the inside of the pinch valve through the groove. Because the groove lacks a limiting structure, the pipeline can easily fall off the groove, causing the automated equipment to malfunction or be interrupted. In addition, the exposed groove not only allows foreign objects to easily enter the pinch valve, affecting the closure of the pipeline, but also can pinch the hands of the operators. Summary of the Invention

[0004] This application provides a pinch valve to solve the problems existing in the prior art, prevent the pipeline from falling out of the groove of the installation groove of the pinch valve, and prevent foreign objects from entering the pinch valve from the groove of the installation groove and pinching the hands of the operator.

[0005] The clamp valve provided in this application includes: a main body, the main body including a clamp valve sleeve and an end cap connected together, the clamp valve sleeve having a positioning part inside, and a clamping groove for placing a pipe being opened on the side of the clamp valve sleeve between the positioning part and the end cap; a pressure head, the pressure head being drivenly connected to a driving member and movable within the clamp valve sleeve under the drive of the driving member to approach or move away from the positioning part, the pressure head squeezing the pipe together with the positioning part when moving towards the positioning part; and a protective cover, the protective cover including a rotating part, a blocking part, and a limiting part arranged in sequence, the limiting part being rotatably connected to the clamp valve sleeve, the limiting part having an elastic opening with an adjustable inner diameter to be detachably snapped onto the clamp valve sleeve; when the protective cover rotates to the point where the elastic opening is snapped onto the clamp valve sleeve, the blocking part blocks the opening of the clamping groove; after the elastic opening disengages from the clamp valve sleeve, the protective cover can rotate to the point where the blocking part avoids the opening of the clamping groove.

[0006] Optionally, the two side walls of the elastic opening, which are arranged radially opposite to each other along the clamp valve sleeve, are provided with outwardly bent flanges.

[0007] Optionally, the two side walls of the rotating part, which are arranged radially opposite to each other along the clamp valve sleeve, are rotatably connected to the clamp valve sleeve by pins.

[0008] Optionally, the shielding part has clearance openings on both radial sides of the clamp valve sleeve to avoid the pipeline.

[0009] Optionally, the protective cover is an arc-shaped cover and has a side opening that extends axially. The elastic opening is located on the side opening. When the protective cover is snapped onto the clamp valve sleeve from the side opening, the protective cover fits onto the clamp valve sleeve.

[0010] Optionally, the inner diameter of the resilient opening is smaller than the maximum inner diameter of the protective cover along the radial direction of the clamp valve sleeve.

[0011] Optionally, the driving component includes a cylinder and a piston rod connected in a driving connection, the piston rod being connected to the pressure head, and the cylinder being connected to the end cover.

[0012] Optionally, the positioning part extends radially along the clamp valve sleeve and is an arc surface near the side of the pressure head; the end of the pressure head facing the positioning part is an arc surface extending radially along the clamp valve sleeve, and the arc surface on the pressure head is located on the sliding path of the arc surface of the positioning part, so as to jointly squeeze the pipe when the positioning part approaches.

[0013] Optionally, the protective cover is an elastic cover.

[0014] Optionally, the piston rod has an anti-rotation plane on its side wall, and the cylinder outlet end has a guide plane that matches the anti-rotation plane on its open side wall.

[0015] The above technical solution has the following beneficial effects:

[0016] The clamp valve provided in this application, during operation, has a protective cover that snaps onto the clamp valve sleeve through an elastic opening. This allows the shielding part to cover the opening of the clamp groove, preventing foreign objects from entering the clamp valve through the groove and affecting the pipeline's on / off control or pinching the operator's hands. Simultaneously, it prevents the pipeline from sliding out of the groove and affecting the control of the liquid flow within the pipeline. When it is necessary to remove the pipeline, a force is applied manually or mechanically to the limiting part towards the outside of the clamp valve sleeve to increase the inner diameter of the elastic opening. The elastic opening can then detach from the clamp valve sleeve, simultaneously driving the rotating part to rotate and move the protective cover away from the groove opening, facilitating the removal and placement of the pipeline. Attached Figure Description

[0017] The preferred embodiments of this application will now be described in detail with reference to the accompanying drawings to aid in understanding the purpose and advantages of this application, wherein:

[0018] Figure 1 The image shows an axial view of the protective cover covering the clamping groove opening in the clamping valve provided in an optional embodiment of this application.

[0019] Figure 2 The image shows a side view of the protective cover covering the opening of the clamping groove in the clamping valve provided in an optional embodiment of this application.

[0020] Figure 3 This is a front view of the protective cover covering the clamping groove opening in the clamping valve provided in an optional embodiment of this application.

[0021] Figure 4 The image shows an axial view of the protective cover in the clamp valve provided in an optional embodiment of this application, which avoids the opening of the clamp groove.

[0022] Figure 5 An exploded view of the pinch valve provided in an optional embodiment of this application.

[0023] Figure 6 An axial view of the protective cover provided in an optional embodiment of this application.

[0024] Figure 7 Rear view of the protective cover provided in an optional embodiment of this application.

[0025] Figure 8 A three-dimensional model of the protective cover blocking the opening of the clamping groove in the clamping valve provided in an optional embodiment of this application.

[0026] Figure 9 A side view model of the protective cover blocking the opening of the clamping groove in the clamping valve provided in an optional embodiment of this application.

[0027] Figure 10 A three-dimensional model of the protective cover in the clamp valve provided in the optional embodiment of this application, which avoids the opening of the clamp groove.

[0028] Figure 11 An exploded model diagram of a pinch valve provided for an optional embodiment of this application.

[0029] Figure 12 A model diagram of the protective cover provided in an optional embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-Main body, 10-Pipe clamping valve sleeve, 100-Pipe clamping groove, 101-Groove opening, 102-Opening, 11-End cap;

[0032] 2-Positioning section;

[0033] 3-Indenter;

[0034] 4-Drive component, 40-Cylinder, 400-Air port, 41-Piston rod, 42-Adjusting nut;

[0035] 5-Protective cover, 50-Rotating part, 500-Rotating hole, 51-Shielding part, 510-Allowing opening, 52-Limiting part, 520-Elastic opening, 521-Flanged edge, 53-Side opening;

[0036] 6-Pin. Detailed Implementation

[0037] The technical solution of the present invention will be further described in detail below with reference to embodiments and accompanying drawings. The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0038] like Figures 1 to 2 , Figures 8 to 9 As shown, this application provides a pinch valve, including: a body 1, a pressure head 3, and a protective cover 5.

[0039] The main body 1 includes a pipe clamping valve sleeve 10 and an end cap 11 connected to each other. The pipe clamping valve sleeve 10 is provided with a positioning part 2. The side of the pipe clamping valve sleeve 10 located between the positioning part 2 and the end cap 11 is provided with a pipe clamping groove 100 for placing a pipe.

[0040] The pressure head 3 is driven to be connected to the driving component 4 and can move within the clamping valve sleeve 10 under the drive of the driving component 4 to move closer to or away from the positioning part 2. When the pressure head 3 moves toward the positioning part 2, it squeezes the pipe together with the positioning part 2.

[0041] In this embodiment, the pipe is a flexible hose. After the pipe is inserted into the clamping groove 100, the pressure head 3 moves towards the positioning part 2 under the drive of the driving member 4 to clamp the pipe and cut off the flow of fluid in the pipe; or the pressure head 3 moves away from the positioning part 2 under the drive of the driving member 4 to release the pipe and allow the flow of fluid in the pipe to be restored.

[0042] The protective cover 5 includes a rotating part 50, a blocking part 51, and a limiting part 52 arranged sequentially. The limiting part 52 is rotatably connected to the clamp valve sleeve 10. The limiting part 52 has an elastic opening 520 with an adjustable inner diameter to detachably engage with the clamp valve sleeve 10. Figure 1 and Figure 4 As shown; when the protective cover 5 is rotated until the elastic opening 520 is engaged with the clamp valve sleeve 10, the blocking part 51 blocks the slot 101 of the clamp groove 100, as shown. Figures 1 to 2 , Figures 8 to 9 As shown; after the elastic opening 520 disengages from the clamp valve sleeve 10, the protective cover 5 can rotate to the position where the blocking part 51 avoids the slot 101 of the clamp groove 100, as... Figure 4 and Figure 10 As shown.

[0043] The clamp valve provided in this embodiment has a protective cover 5 that engages with the clamp valve sleeve 10 through an elastic opening 520 during operation. This allows the shielding part 51 to block the opening 101 of the clamp groove 100, preventing foreign objects from entering the clamp valve through the opening 101 and affecting the pipeline's on / off control or pinching the operator's hands. Simultaneously, it also prevents the pipeline from sliding out of the opening 101 of the clamp groove 100 and affecting the control of the liquid flow within the pipeline. When the pipeline needs to be removed, a force is applied manually or mechanically to the limiting part 52 towards the outside of the clamp valve sleeve 10 to increase the inner diameter of the elastic opening 520. The elastic opening 520 can then detach from the clamp valve sleeve 10, simultaneously driving the rotating part 50 to rotate and causing the protective cover 5 to avoid the opening 101 of the clamp groove 100, facilitating the removal and placement of the pipeline.

[0044] In an optional embodiment, both side walls of the resilient opening 520, arranged radially opposite to each other along the clamp valve sleeve 10, are provided with outwardly bent flanges 521. Please refer to... Figure 3 The flanges 521 on both sides can engage with the elastic opening 520 on the clamping valve sleeve 10, increasing the clamping force of the elastic opening 520 on the clamping valve sleeve 10. When it is necessary to avoid the slot 101 of the clamping groove 100, the operator uses the flanges 521 as the force point to push the elastic opening 520 outward, while driving the rotating part 50 to rotate until the inner diameter of the elastic opening 520 exceeds the outer diameter of the clamping valve sleeve 10, so that the limiting part 52 disengages from the clamping valve sleeve 10. The rotating part 50 continues to rotate until... Figure 4 and Figure 10 The slot 101 of the clamping tube groove 100 can be avoided as shown.

[0045] In an optional embodiment, the two side walls of the rotating part 50, which are radially opposite to each other along the clamp valve sleeve 10, are rotatably connected to the clamp valve sleeve 10 by a pin 6. Please refer to... Figures 5 to 6 Rotating parts 50 are provided with rotating holes 500 at corresponding positions. The clamping valve sleeve 10 is provided with openings 102 on both sides arranged radially opposite to each other. The two rotating holes 500 and the two openings 102 are aligned one by one and then rotated and connected by pins 6 respectively.

[0046] In an optional embodiment, the shielding portion 51 has clearance openings 510 on both radial sides of the clamp valve sleeve 10 to avoid the pipeline. Please refer to... Figure 1 and Figure 4 The clearance opening 510 allows the pipeline to pass normally through the clamping groove 100 of the clamping valve sleeve 10. Figure 5 and Figure 6 The obstruction opening 510 shown is rectangular. Covering the top area of ​​the clamping groove 100 is an optional implementation. The obstruction opening 510 can be opened according to the required obstruction groove opening 101, or the edge of the obstruction opening 510 can be opened at the same distance as the edge of the clamping groove 100, or the width of the blocking part 51 in the circumferential direction can be increased to completely cover the groove opening 101 of the clamping groove 100 to increase the blocking effect.

[0047] In an optional embodiment, the protective cover 5 is an arc-shaped cover with a side opening 53 extending axially. An elastic opening 520 is located on the side opening 53. When the elastic opening 520 is engaged with the clamp valve sleeve 10, the protective cover 5 adheres to the clamp valve sleeve 10. Please refer to... Figures 6 to 7 The side opening 53 allows the protective cover 5 to rotate around the pin 6 and be fitted onto the outside of the clamp valve sleeve 10. The arc-shaped structure of the protective cover 5 allows the protective cover 5 to fit against the cylindrical clamp valve sleeve 10 when the elastic opening 520 is snapped onto the side wall of the clamp valve sleeve 10.

[0048] In an optional embodiment, the inner diameter of the resilient opening 520 is smaller than the maximum inner diameter of the protective cover 5 along the radial direction of the clamp valve sleeve 10. For example... Figures 6 to 7 , Figure 12 As shown, along the longitudinal cross-section of the protective cover 5, from the top of the protective cover 5 to the elastic opening 520, the inner diameter first increases and then decreases to fit the clamp valve sleeve 10, so that the protective cover 5 fits on the clamp valve sleeve 10. At the same time, the elastic opening 520 is reduced in diameter to make the protective cover 5 stably snapped onto the clamp valve sleeve 10.

[0049] In an optional embodiment, the driving component 4 includes a cylinder 40 and a piston rod 41 connected in a driving manner. The piston rod 41 is connected to the pressure head 3, and the cylinder 40 is connected to the end cap 11. Figure 5 As shown, the cylinder 40 controls the intake and exhaust of air through its own air port 400, thereby moving the internal piston and driving the piston rod 41 to move towards or away from the pressure head 3.

[0050] In one optional embodiment, the piston rod 41 has an external thread at its end, and the pressure head 3 has a threaded hole on its end face. The piston rod 41 is threaded into the threaded hole of the pressure head 3. The piston rod 41 is threaded onto the pressure head 3, which facilitates disassembly and ensures a stable connection. In addition, an adjusting nut 42 is installed on the piston rod 41, which is used to stably press the pressure head 3 onto the piston rod 41.

[0051] In one optional embodiment, mounting through holes can be provided at all four corners of the cylinder 40, and mounting holes are also provided at the corresponding positions of the end cover 11. After the stud passes through the mounting through holes, it is fastened in the mounting holes to achieve a stable and detachable connection between the cylinder 40 and the end cover 11.

[0052] In an optional embodiment, the positioning part 2 extends radially along the clamping valve sleeve 10 and is an arc-shaped surface near the side of the pressure head 3; the end of the pressure head 3 facing the positioning part 2 is an arc-shaped surface extending radially along the clamping valve sleeve 10, and the arc-shaped surface on the pressure head 3 is located on the sliding path of the arc-shaped surface of the positioning part 2, so as to jointly squeeze the pipe when the positioning part 2 approaches. Figure 1 , Figure 3 , Figure 5 , Figure 11 and Figure 12 As shown, the positioning part 2 is in the shape of a round rod, and the pressure head 3 has an arc-shaped wall at its end. The surfaces of the positioning part 2 and the pressure head 3 used to squeeze the pipe are both arc surfaces, which can reduce damage to the pipe.

[0053] In an optional embodiment, the protective cover 5 is an elastic cover. The protective cover 5 can be made of rubber or metal sheet, which can not only be stably attached to the clamp valve sleeve 10 and effectively block the groove 101 of the clamp groove 100, but also allow the elastic opening 520 to expand outward and detach from the clamp valve sleeve 10 after being subjected to force and be reused.

[0054] In an optional embodiment, an anti-rotation plane is provided on the side wall of the piston rod 41, and a guide plane adapted to the anti-rotation plane is provided on the open side wall of the outlet end of the cylinder 40. By the guide plane on the open side wall of the cylinder 40 engaging with the anti-rotation plane on the side wall of the piston rod 41, the piston rod 41 can be limited in the circumferential direction to prevent rotation.

[0055] In an alternative embodiment, one or two parallel planes are machined into the cylindrical rod body along a certain length of the piston rod 41 to form a "D"-shaped cross-section (a plane is machined into the rod body) or a double-plane cross-section. On the opening sidewall of the cylinder 40, a non-circular hole (such as a "D"-shaped cross-section hole or a double-plane cross-section hole) is machined to precisely match the shape of the piston rod 41; the planar contact prevents the piston rod 41 from rotating about its axis.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A pinch valve, characterized in that, include: The main body includes a pipe clamping valve sleeve and an end cap connected to each other. The pipe clamping valve sleeve is provided with a positioning part, and the side of the pipe clamping valve sleeve located between the positioning part and the end cap is provided with a pipe clamping groove for placing a pipe. The pressure head is driven and connected to the driving component and can move within the clamping valve sleeve under the drive of the driving component to move closer to or away from the positioning part. When the pressure head moves towards the positioning part, it squeezes the pipe together with the positioning part. The protective cover includes a rotating part, a blocking part, and a limiting part arranged in sequence. The limiting part is rotatably connected to the clamp valve sleeve and has an elastic opening with an adjustable inner diameter to be detachably snapped onto the clamp valve sleeve. When the protective cover is rotated to the point where the elastic opening is snapped onto the clamp valve sleeve, the blocking part blocks the opening of the clamp groove. After the elastic opening disengages from the clamp valve sleeve, the protective cover can rotate to the blocking part to avoid the opening of the clamp groove.

2. The pinch valve according to claim 1, characterized in that, The elastic opening has outwardly bent flanges on both sides of the radially opposite sides of the clamp valve sleeve.

3. The pinch valve according to claim 1, characterized in that, The two side walls of the rotating part, which are arranged radially opposite to each other along the clamp valve sleeve, are rotatably connected to the clamp valve sleeve by pins.

4. The pinch valve according to claim 1, characterized in that, The shielding part has clearance openings on both sides of the radial direction of the clamp valve sleeve to avoid the pipeline.

5. The pinch valve according to claim 4, characterized in that, The protective cover is an arc-shaped cover with a side opening that extends axially. The elastic opening is located on the side opening. When the protective cover is snapped onto the clamp valve sleeve through the side opening, the protective cover fits against the clamp valve sleeve.

6. The pinch valve according to claim 1, characterized in that, The inner diameter of the elastic opening is smaller than the maximum inner diameter of the protective cover along the radial direction of the clamp valve sleeve.

7. The pinch valve according to claim 1, characterized in that, The driving component includes a cylinder and a piston rod connected for driving. The piston rod is connected to the pressure head, and the cylinder is connected to the end cover.

8. The pinch valve according to claim 7, characterized in that, The positioning part extends radially along the clamp valve sleeve and the side near the pressure head is an arc surface; The end of the pressure head facing the positioning part is an arc surface extending radially along the clamping valve sleeve. The arc surface of the pressure head is located on the sliding path of the arc surface of the positioning part so as to jointly squeeze the pipe when the positioning part approaches.

9. The pinch valve according to claim 1, characterized in that, The protective cover is an elastic cover.

10. The pinch valve according to claim 7, characterized in that, The piston rod has an anti-rotation plane on its side wall, and the cylinder outlet end has a guide plane that matches the anti-rotation plane on its open side wall.

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