A hinged pinch valve

Abstract

This utility model discloses a hinged clamp valve, including a clamp valve body. The clamp valve body includes a pipe clamping mechanism and a pipe pressing structure. The pipe clamping mechanism includes an upper pipe seat and a lower pipe seat hinged to one side thereto. The lower pipe seat includes a pipe placement support with a longitudinally penetrating hollow cavity. The pipe pressing structure is located within the hollow cavity. A hook block extends outward from the side of the pipe placement support away from the hinge end. The upper pipe seat includes a lower pressing part and a locking part connected to it via an elastic connecting part. The locking part has a locking groove that can engage with the hook block. When the hook block engages with the locking groove, it clamps the pipe between the pipe pressing structure and the lower pressing part, thereby cutting off the flow channel of liquid in the pipe. This utility model is easy to operate with fingers, has minimal deflection even when deformed, is not easily damaged, and effectively improves its service life.

Description

Technical Field

[0001] This utility model relates to the field of clamp valve technology, and in particular to a hinged clamp valve. Background Technology

[0002] Pinch valves are widely used in various applications, including chemical production processes and equipment. The standard operation of a pinch valve consists of a flexible tube (hose or sleeve) and a device that directly contacts the flexible tube body. This device includes an advanceable and retractable component. When this component is advanced, the inner walls of the flexible tubes press against each other, creating a seal within the liquid flow path and preventing further liquid flow.

[0003] US Patent Application No. 20250102069A1, entitled "A Pinch Valve," discloses a clamping mechanism assembled with a second valve section and a fully assembled pinch valve. A first fastener protrusion may include an extended lip located at a distal end. A second fastener protrusion may include a hole passing through the second fastener protrusion. The extension is configured to enter and partially pass through the hole, its lip configured to frictionally engage with at least a portion of the top edge of the hole, i.e., a one-sided hinged connection and a snap-fit ​​connection at the other end. However, this snap-fit ​​connection structure is difficult to operate with fingers, making it very difficult to loosen the fastener, and the vertically positioned first fastener needs to be bent significantly during engagement, making it prone to breakage during operation.

[0004] Therefore, there is a need to provide a hinged clamp valve that is easy to operate with fingers, has minimal deflection even when deformed, and is not easily damaged, in order to solve the above problems. Utility Model Content

[0005] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a hinged clamp valve that is easy to operate with fingers, has small deflection even when deformed, is not easily damaged, and effectively improves service life.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hinged clamp valve, comprising a clamp valve body; the clamp valve body includes a pipe clamping mechanism and a pipe pressing structure, the pipe clamping mechanism includes an upper pipe seat and a lower pipe seat hinged to one side therewith, the lower pipe seat includes a pipe placement support with a longitudinally penetrating hollow cavity, the pipe pressing structure is located in the hollow cavity, a hook block extends outward from the side of the pipe placement support away from the hinge end, the upper pipe seat includes a lower pressing part and a snap-fit ​​part connected to it through an elastic connecting part, the snap-fit ​​part has a snap-fit ​​groove that can snap with the snap-fit ​​block, when the snap-fit ​​block snaps with the snap-fit ​​groove, it can clamp the pipe between the pipe pressing structure and the lower pressing part, thereby cutting off the flow channel of liquid in the pipe.

[0007] Furthermore, both the upper and lower tube seats have opposing first and second ends, and the second ends on the upper and lower tube seats are hinged together by a pin. This allows the upper tube seat to open and close relative to the lower tube seat like an alligator's mouth.

[0008] Furthermore, the cross-section of the elastic connecting part is U-shaped and has opposite head and tail sections. The head of the elastic connecting part is connected to the snap-fit ​​part, and the tail of the elastic connecting part is connected to the snap-fit ​​part.

[0009] Furthermore, the straight line along the length of the first end of the U-shaped elastic connector is parallel to the straight line along the height of the snap-fit ​​portion. This maintains stability during the engagement of the upper and lower pipe seats and prevents the snap-fit ​​groove from failing to securely engage with the hook block due to the outward tilt of the elastic connector and snap-fit ​​portion, thus ensuring the pipe fastening is secure.

[0010] Furthermore, the locking part is vertically arranged, and each of its upper width ends is provided with an extended arm extending towards the downward pressing part. A clearance groove is also provided on the locking part for the installation of the elastic connector. The extension arms correspond to the position of the first end of the downward pressing part, which on the one hand limits the distance that the fingers must pry the bottom of the locking part outward during the release operation, preventing the locking part from breaking off from the elastic connector due to an excessive angle; on the other hand, it maintains the stability of the entire locking part.

[0011] Furthermore, the pressing part includes two support arms symmetrically arranged towards the snap-fit ​​part. The two support arms are connected by a recessed clamping member, which corresponds to the position of the pipe pressing structure. This ensures that when the upper and lower pipe seats are engaged, the clamping member and the pipe pressing structure can completely clamp the pipe fitting, thus completely blocking the flow of liquid in the pipe fitting.

[0012] Furthermore, the clamping member has a V-shaped cross-section and is positioned perpendicular to the direction in which the pipe is placed.

[0013] Furthermore, the clamping valve body also includes a lifting drive mechanism disposed below and detachably connected to the clamping mechanism. The lifting drive mechanism includes a fixed frame and a drive coil vertically mounted thereon. The pipe clamping structure is located at the drive end of the drive coil. The pipe clamping structure includes a top clamping member and guide members respectively disposed at both ends along its length. The straight line along the length of the top clamping member is parallel to the straight line along the length of the lower clamping part. The drive coil can drive the pipe clamping structure to move upward, ensuring that the pipe clamping structure can completely clamp the pipe between itself and the lower clamping part, thus ensuring clamping efficiency.

[0014] Furthermore, the pipe fitting support has a guide groove inside that matches the guide member. When the drive coil piston rod extends or retracts, the pipe pressing structure can move up and down along the guide groove to clamp the pipe fitting located between it and the lower pressing part. The guide groove provides guidance for the up and down movement of the pipe pressing structure, ensuring that the pipe pressing structure and the lower pressing part can accurately clamp the pipe fitting.

[0015] Furthermore, both the lower surface of the support arm and the upper surface of the pipe placement support have opposing arc-shaped grooves along a direction parallel to the hinge. The arc-shaped groove structure matches the pipe fitting; the arc-shaped groove on the pipe placement support can initially position the pipe fitting to ensure the accuracy of subsequent pipe fitting clamping operations; the arc-shaped groove on the lower surface of the support arm is used to cooperate with the arc-shaped groove on the pipe placement support to limit the displacement of the pipe fitting in the left-right direction.

[0016] The beneficial effects of this utility model are: In this utility model, the clamp valve body, the pipe clamping mechanism, and the pipe pressure structure work together. When the lower pressing part on the upper pipe seat is connected to the snap-fit ​​part, they are connected through an elastic connecting part rather than through direct hard contact. This prevents the lower pressing part from cracking or being damaged due to frequent opening and closing when the snap-fit ​​part is pressed to engage with the snap-fit ​​block or when the snap-fit ​​part is pried outward to separate from the snap-fit ​​block. Furthermore, the snap-fit ​​design between the snap-fit ​​block and the snap-fit ​​groove makes it easier for operators to operate with their fingers, making the operation of tightening and releasing the pipe fittings very easy. Combined with the elastic connecting part, even if deformation occurs during operation, there is only a small deflection, effectively improving the service life of the clamp valve body. Attached Figure Description

[0017] Figure 1 This is an axonometric view of the overall structure of an embodiment of the present invention; Figure 2 This is an isometric view of the overall structure of the lower tube seat according to an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of the overall structure of an embodiment of the present utility model; Figure 4 This is an isometric view of the overall structure of the tube compression structure according to an embodiment of the present invention; Figure 5 This is an isometric view of the overall structure of the upper tube seat according to an embodiment of the present invention; Figure 6 This is an axonometric view of the overall structure of the tube seat from another perspective of an embodiment of the present invention; Figure 7 This is a schematic cross-sectional view of the overall structure of the upper tube seat according to an embodiment of the present invention; In the diagram: 1. Pinch valve body; 2. Lifting drive mechanism; 21. Fixing frame; 22. Drive coil; 3. Pipe clamping mechanism; 31. Upper pipe seat; 311. Lower pressing part; 3111. Clamping part; 3112. Support arm; 312. Snap-fit ​​part; 3121. Snap-fit ​​groove; 3122. Relief groove; 313. Elastic connection part; 3131. Head end; 3132. Tail end; 32. Lower pipe seat; 321. Base plate; 322. Pipe fitting placement support; 3221. Hollow cavity; 33. Hook block; 4. Pipe pressure assembly; 42. Top pressing part; 411. Top pressing part; 412. Inclined surface; 42. Guide part; 5. Pin. Detailed Implementation

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0019] See appendix Figures 1 to 7 As shown, a hinged clamp valve in this embodiment includes a clamp valve body 1; the clamp valve body 1 includes a pipe clamping mechanism 3 and a pipe pressing structure 4. The pipe clamping mechanism 3 includes an upper pipe seat 31 and a lower pipe seat 32 hinged to one side thereto, so that the upper pipe seat 31 can be fastened to the lower pipe seat 32 to secure the pipe, or the upper pipe seat 31 can be opened to release the pipe. The lower pipe seat 32 includes a pipe fitting placement support 322 with a longitudinally penetrating hollow cavity 3221. The pipe pressing structure 4 is located inside the hollow cavity 3221. The pipe fitting placement support 322 is used to support the placement of the pipe fitting to be clamped. The pipe pressing structure 4 is located below the pipe fitting so as to cooperate with the lower pressing part 311 on the upper pipe seat 31 to clamp the pipe fitting from the upper and lower sides to block the flow of liquid in the pipe fitting. A hook block 33 extends outward from the side away from the hinge end on the pipe fitting support 322. The upper pipe seat 31 includes a pressing part 311 and a snap-fit ​​part 312 connected to it via an elastic connecting part 313. The snap-fit ​​part 312 has a snap-fit ​​groove 3121 that can snap with the hook block 33. When the hook block 33 snaps with the snap-fit ​​groove 3121, it can clamp the pipe fitting between the pipe pressing structure 4 and the pressing part 311 to cut off the flow channel of liquid in the pipe fitting.

[0020] When the pressing part 311 on the upper tube seat 31 is connected to the snap-fit ​​part 312, they are connected through the elastic connecting part 313 instead of direct hard contact. This makes the stress applied to the elastic connecting part 313 negligible or very small when the snap-fit ​​part 312 is pressed to engage with the snap-fit ​​block 33 or when the snap-fit ​​part 312 is pried outward to separate from the snap-fit ​​block 33. The elastic connecting part 313 will only undergo a very small deformation. This ensures that the connection between the two ends of the elastic connecting part 313 and the pressing part 311 and the snap-fit ​​part 312 will not crack or be damaged due to frequent opening and closing. Furthermore, the engagement of the hook block 33 and the buckle groove 3121 makes it easier for operators to operate with their fingers, making it very easy to tighten and loosen the pipe fittings. In addition, with the elastic connection part 313, even if it deforms during operation, it has a small deflection, which effectively improves the service life of the clamp valve body 1.

[0021] Both the upper tube seat 31 and the lower tube seat 32 have opposing first and second ends. The second end of the upper tube seat 31 and the second end of the lower tube seat 32 are hinged together by a pin 5. This allows the upper tube seat 31 to open and close relative to the lower tube seat 32 like an alligator's mouth.

[0022] It should be noted that the hinge structure connecting the second end of the upper tube seat 31 and the second end of the lower tube seat 32 is not limited to the pin 5. It can also be a two-way bolt or other existing mechanical structure that allows the upper tube seat 31 to swing around the hinge point on the lower tube seat 32.

[0023] The elastic connecting part 313 has a U-shaped cross section and has a head end 3131 and a tail end. The head end 3131 of the elastic connecting part 313 is connected to the snap-fit ​​part 312, and the tail end 3132 of the elastic connecting part 313 is connected to the snap-fit ​​part 312.

[0024] In some embodiments, the cross section of the elastic connection portion 313 may also be configured as a plurality of continuous U-shaped structures, wherein the top of the U-shaped structure at the first end 3131 near the snap-fit ​​portion 312 is connected to the snap-fit ​​portion 312, and the top of the U-shaped structure at the end near the pressing portion 311 is connected to the pressing portion 311.

[0025] It should be noted that the number of U-shaped structures is not limited, as long as the elastic connection 313 is elastic and has a small deflection when subjected to force.

[0026] The straight line along the length of the side containing the first end 3131 of the U-shaped elastic connector is parallel to the straight line along the height of the snap-fit ​​part 312. This is to maintain stability during the engagement of the upper pipe seat 31 and the lower pipe seat 32, and to prevent the snap-fit ​​groove 3121 from failing to securely engage with the snap-fit ​​block 33 due to the outward tilt of the elastic connector and the snap-fit ​​part 312, thus affecting the fastening of the pipe fitting.

[0027] In some embodiments, the end of the side where the first end 3131 of the elastic connector is located may also be inclined toward the direction of the pressing part 311 without affecting the snapping force of the snapping groove 3121.

[0028] The snap-fit ​​portion 312 is vertically arranged, and each of its upper width-direction ends is provided with an extended arm extending towards the pressing portion 311. The snap-fit ​​portion 312 also has a clearance groove 3122 for the installation of the elastic connector. The extension arm is positioned corresponding to the position of the first end 3131 of the pressing portion 311. On the one hand, it can limit the distance that the fingers can pry the bottom of the snap-fit ​​portion 312 outward during the release operation, avoiding excessive angle that would cause the snap-fit ​​portion 312 to disconnect from the elastic connector 313; on the other hand, it can maintain the stability of the entire snap-fit ​​portion 312.

[0029] In some embodiments, the clearance groove 3122 is connected to the latching groove 3121. The bottom of the latching groove 3121 is a horizontal plane, and the bottom of the hook block 33 is a horizontal plane parallel to the bottom surface of the latching groove 3121. When latching, the bottom surface of the latching groove 3121 abuts against the bottom surface of the hook block 33. The two parallel horizontal planes can ensure that there is sufficient contact surface between the latching groove 3121 and the hook block 33, thus ensuring the latching effect.

[0030] The lower pressure part 311 includes two support arms 3112 symmetrically arranged towards the snap-fit ​​part 312. The two support arms 3112 are connected by a recessed clamping member 3111, which corresponds to the position of the pipe pressing structure 4. This ensures that when the upper pipe seat 31 and the lower pipe seat 32 are engaged, the clamping member and the pipe pressing structure 4 can completely clamp the pipe fitting, thus completely blocking the flow of liquid in the pipe fitting.

[0031] In some embodiments, one end of the two support arms 3112 away from the snap-fit ​​portion 312 is hinged to one side of the pipe placement support 322.

[0032] The clamping element has a V-shaped cross-section and is positioned perpendicular to the direction in which the pipe is placed.

[0033] In some embodiments, the V-shaped cross-section tip can both flatten the pipe section until the upper and lower inner walls of the pipe fit together, cutting off the liquid passage in the pipe, and reduce the contact with the pipe in the length direction, ensuring the best effect of cutting off the liquid passage.

[0034] It should be noted that the cross-section of the clamping component is not limited to a V-shape; it can also be U-shaped or other structures.

[0035] The clamp valve body 1 also includes a lifting drive mechanism 2 disposed below and detachably connected to the clamping mechanism. The lifting drive mechanism 2 includes a fixed frame 21 and a drive coil 22 vertically disposed thereon. The pipe clamping structure 4 is located at the driving end of the drive coil 22. The pipe clamping structure 4 includes a top clamping member 42 and guide members 42 respectively disposed at both ends of its length direction. The straight line of the length direction of the top clamping member 42 is parallel to the straight line of the length direction of the lower clamping part 311. The drive coil 22 can drive the pipe clamping structure 4 to move upward, ensuring that the pipe clamping structure 4 can completely clamp the pipe between itself and the lower clamping part 311, thus ensuring pipe clamping efficiency.

[0036] In some embodiments, the top pressure member 42 further includes a top pressure portion 411, which is inclined downward from both sides along its length to form a slope 412, such that the middle part of the top pressure member 42 protrudes from the surface of the top pressure member 42, which can better clamp the pipe between it and the lower pressure portion 311 and block the flow of liquid in the pipe.

[0037] In some embodiments, the base plate 321 on the lower pipe seat 32 is threadedly connected to the upper surface of the fixing frame 21 by at least one screw, which facilitates the assembly of the pipe clamping mechanism 3 and the lifting drive mechanism 2.

[0038] In some embodiments, the fixing frame 21 is a U-shaped frame with a side opening, and the top of the U-shaped frame has an opening through which the driving end of the driving coil 22 passes vertically.

[0039] It should be noted that the lifting and lowering of the tube pressure mechanism is not limited to using only the drive coil 22; other known mechanical structures capable of driving the lifting and lowering can also be used, such as a drive cylinder.

[0040] The pipe fitting support 322 has a guide groove inside that matches the guide member 42. When the piston rod of the drive coil 22 extends or retracts, the pipe pressing structure 4 can move up and down along the guide groove to clamp the pipe fitting located between it and the lower pressing part 311. The guide groove can guide the up and down movement of the pipe pressing structure 4, ensuring that the pipe pressing structure 4 and the lower pressing part 311 can accurately clamp the pipe fitting.

[0041] Both the lower surface of the support arm 3112 and the upper surface of the pipe fitting placement support 322 have opposing arc-shaped grooves along a direction parallel to the hinge. The arc-shaped groove structure matches the pipe fitting. The arc-shaped groove on the pipe fitting placement support 322 can initially position the pipe fitting to ensure the accuracy of subsequent pipe fitting clamping operations; the arc-shaped groove on the lower surface of the support arm 3112 is used to cooperate with the arc-shaped groove on the pipe fitting placement support 322 to limit the displacement of the pipe fitting in the left and right directions.

[0042] In some embodiments, the distance between the bottom of the arcuate groove on the support arm 3112 and the upper surface of the support arm 3112 is less than the depth of the pressure member sinking.

[0043] 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 hinged pinch valve, characterized in that: The device includes a clamp valve body; the clamp valve body includes a pipe clamping mechanism and a pipe pressing structure. The pipe clamping mechanism includes an upper pipe seat and a lower pipe seat hinged to one side thereto. The lower pipe seat includes a pipe placement support with a longitudinally penetrating hollow cavity. The pipe pressing structure is located inside the hollow cavity. A hook block extends outward from the side of the pipe placement support away from the hinge end. The upper pipe seat includes a lower pressing part and a snap-fit ​​part connected to it through an elastic connecting part. The snap-fit ​​part has a snap-fit ​​groove that can snap with the snap-fit ​​block. When the snap-fit ​​block snaps with the snap-fit ​​groove, it can clamp the pipe between the pipe pressing structure and the lower pressing part to cut off the flow channel of liquid in the pipe.

2. The hinged pinch valve according to claim 1, characterized in that: Both the upper tube seat and the lower tube seat have a first end and a second end, and the second end on the upper tube seat and the second end on the lower tube seat are hinged together by a pin.

3. A hinged pinch valve according to claim 1, characterized in that: The cross-section of the elastic connecting part is U-shaped and has opposite head and tail sections. The head of the elastic connecting part is connected to the snap-fit ​​part, and the tail of the elastic connecting part is connected to the snap-fit ​​part.

4. A hinged pinch valve according to claim 3, characterized in that: The straight line along the length of the side containing the first end of the U-shaped elastic connector is parallel to the straight line along the height of the snap-fit ​​portion.

5. A hinged pinch valve according to claim 1, characterized in that: The snap-fit ​​part is vertically arranged, and each of its two ends in the upper width direction is provided with an extension arm extending in the direction of the downward pressing part. The snap-fit ​​part is also provided with a clearance groove for the installation of the elastic connector.

6. A hinged pinch valve according to claim 1, characterized in that: The pressing part includes two support arms symmetrically arranged in the direction of the snap-fit ​​part. The two support arms are connected by a pressing member that is recessed and corresponds to the position of the tube pressing structure.

7. A hinged pinch valve according to claim 6, characterized in that: The clamping element has a V-shaped cross-section and is positioned perpendicular to the direction in which the pipe is placed.

8. A hinged pinch valve according to claim 1, characterized in that: The clamp valve body also includes a lifting drive mechanism disposed below and detachably connected to the clamping mechanism. The lifting drive mechanism includes a fixed frame and a drive coil vertically disposed thereon. The pipe pressing structure is located at the driving end of the drive coil. The pipe pressing structure includes a top pressing member and guide members disposed at both ends of its length direction. The straight line of the length direction of the top pressing member is parallel to the straight line of the length direction of the lower pressing part.

9. A hinged pinch valve according to claim 8, characterized in that: The pipe fitting support has a guide groove inside that matches the guide component. When the drive coil piston rod extends or retracts, the pipe pressing structure can move up and down along the guide groove to clamp the pipe fitting located between it and the lower pressing part.

10. A hinged pinch valve according to claim 6, characterized in that: The lower surface of the support arm and the upper surface of the pipe placement support are both provided with opposing arc-shaped grooves in a direction parallel to the hinge.

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