A flip-top pneumatic pinch valve

Abstract

This utility model provides a flip-top pneumatic pinch valve, including a valve body, a piston assembly, a valve head, a clamping ball head, a rotary valve cover, and a manual locking assembly. The valve head is connected to the front end of the valve body and has a C-shaped limiting cavity. The piston assembly is disposed in the valve cavity of the valve body, and its front end is connected to the clamping ball head, which can drive the clamping ball head to move axially along the valve body into the C-shaped limiting cavity. The rotary valve cover is rotatably connected to the lower end of the valve head on the opening side of the C-shaped limiting cavity. The rotary valve cover has a clamping groove. The manual locking assembly is disposed in the rotary valve cover. The rotary valve cover can be inserted into or disengaged from the C-shaped limiting cavity by rotation. The manual locking assembly is used to lock the rotary valve cover and the valve head. This pinch valve has the characteristics of high applicability and versatility, low operating cost, no tools required for replacement, convenience, high efficiency, and no safety risks.

Description

Technical Field

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

[0002] In the valve industry market, pneumatic pinch valves are suitable for fluid transport applications, providing best-in-class flow control, adaptability, minimal footprint, cost-effectiveness, and compact design for critical aseptic processes. Key product features include: quick changeover, easy maintenance, availability in various sizes to suit different flow rates, and ease of automation. Main applications include: bioreactors, depth filtration, chromatography instruments, bottling, disposable bioreactors, cell culture, food packaging, breweries, and dairy processing.

[0003] Problems and shortcomings of existing technologies: (1) Traditional pneumatic pinch valves have an integrated design of actuator and clamping assembly, which cannot be replaced and have low versatility.

[0004] (2) In traditional pneumatic pinch valves, the hose clamping position is located on the piston rod axis during pipe installation / replacement, and the hose installation opening on the valve head is generally narrow (smaller than the outer diameter of the silicone tube). When installing high-hardness silicone tubes, it is difficult and laborious to install. For disposable pipes, cell culture equipment, etc., where multiple pinch valves need to work together, the process of installing / replacing pipes is inefficient. In addition, improper installation may cause scratches and damage to the silicone tube.

[0005] (3) Traditional pneumatic clamp valves are installed or replaced under the piston rod clamping block when installing or replacing disposable silicone tubing. If the gas supply is suddenly cut off (gas supply interruption, air pipe damage, etc.) when replacing disposable silicone tubing, it may cause personal injury and pose a high safety risk.

[0006] In view of this, it is necessary to improve the existing pneumatic pinch valve to solve the above problems. Utility Model Content

[0007] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a flip-top pneumatic clamp valve.

[0008] The technical solution adopted by this utility model to solve its technical problem is: a flip-top pneumatic clamp valve, including a valve body, a piston assembly, a valve head, a clamping ball head, a rotary valve cover, and a manual locking assembly. The valve head is connected to the front end of the valve body and has a C-shaped limiting cavity with a side opening. The piston assembly is located in the valve cavity inside the valve body, and its front end is connected to the clamping ball head. The piston assembly can drive the clamping ball head to move axially along the valve body and extend forward into the C-shaped limiting cavity of the valve head. The rotary valve cover is rotatably connected to the lower end of the valve head on the opening side of the C-shaped limiting cavity by a positioning pin. The positioning pin shaft is fixed in the shaft hole by a slotted headless screw. The rotary valve cover has a clamping groove for pipeline positioning. The manual locking assembly is located in the rotary valve cover at the end away from the positioning pin. The rotary valve cover can be inserted into or removed from the C-shaped limiting cavity by rotating around the positioning pin. The manual locking assembly is used to lock the rotary valve cover and the valve head. The C-type limiting cavity is formed by two side plates with C-shaped openings on the left and right sides and the valve head. When the rotating valve cover is inserted into the C-type limiting cavity, it is located between the two side plates.

[0009] Furthermore, the valve body includes a split cylinder body, a normally open rear end cover, a normally open front end cover, a fixing plate, a magnetic switch, and a magnetic switch adjusting block. The split cylinder body has a hollow structure. The normally open rear end cover is sealed at the rear of the split cylinder body and fixed by a retaining ring through a hole. The normally open front end cover is sealed at the front of the split cylinder body. A magnetic switch mounting slot is provided on the left side of the split cylinder body. One end of the magnetic switch is set in the magnetic switch mounting slot, and a magnetic switch adjusting block is provided between the magnetic switch and the split cylinder body. The magnetic switch mounting slot on the outside of the magnetic switch is sealed by a fixing plate, fixing the magnetic switch and the magnetic switch adjusting block in the magnetic switch mounting slot. The fixing plate is fixed to the split cylinder body by a cross-slot countersunk screw.

[0010] Furthermore, in order to achieve a seal between the front and rear end caps and the cylinder body, a first sealing ring is provided between the normally open front end cap and the inner wall of the split cylinder body, and a sixth sealing ring is provided between the normally open rear end cap and the inner wall of the split cylinder body.

[0011] Furthermore, the piston assembly includes a piston, a piston retaining ring, a piston rod, a normally open clamp valve spring, and a magnet disposed within the valve cavity. The piston is axially slidably connected within the valve cavity. The rear end of the piston rod is connected to the piston, and the piston and piston rod are locked and fixed by the piston retaining ring. The front end of the piston rod extends forward out of the valve cavity, and the end is connected to a clamping ball head. An annular groove is provided on the outer wall of the piston, and an annular magnet is disposed within the annular groove. The magnet is located between the piston and the inner wall of the valve cavity. The normally open clamp valve spring is sleeved on the outside of the piston rod, with its upper end connected to the piston and its lower end connected to the normally open front end cap, providing elastic support between the piston and the normally open front end cap.

[0012] Furthermore, it also includes a second, third, fourth, and fifth sealing ring. The second sealing ring is disposed on the outside of the piston and between the piston and the inner wall of the valve chamber, achieving a seal between the piston and the split cylinder body. The third sealing ring is disposed between the piston retaining ring and the contact surface at the upper end of the piston, achieving a seal between the piston retaining ring and the piston. The fourth sealing ring is disposed between the piston and the piston rod, achieving a seal between the piston and the piston rod. The fifth sealing ring is disposed between the normally open front end cap and the piston rod, achieving a seal between the normally open front end cap and the piston rod connection surface. Among them, the third and fifth sealing rings are dynamic seals, and the second and fourth sealing rings are static seals.

[0013] Furthermore, the rotary valve cover is a C-shaped structure, the clamping groove is located on the inner side of the C-shaped structure, and the clamping groove is an arc-shaped groove with an opening, and the opening size of the clamping groove is greater than or equal to the diameter of the clamping pipeline.

[0014] Furthermore, the manual locking assembly includes a manual switch and a switch spring. The rotary valve cover has a switch mounting cavity, the manual switch is disposed in the switch mounting cavity, and the manual switch has a plug and a lever. The plug and the lever both extend outward from the switch mounting cavity. The valve head has a slot adapted to the plug. The switch spring is elastically supported in the switch mounting cavity between the manual switch and the rotary valve cover at the end away from the plug. One end of the switch spring abuts against the inner wall of the switch mounting cavity, and the other end abuts against the manual switch. The opening of the switch mounting cavity is provided with a cover plate, and the cover plate is fixedly connected to the rotary valve cover by a flat-head Phillips screw.

[0015] The rotary valve cover rotates forward around the positioning pin and is embedded in the C-shaped limiting cavity. The plug is inserted into the slot under the elastic force of the switch spring, thereby locking the rotary valve cover and the valve head. Pressing down the lever compresses the switch spring, causing the plug to disengage from the slot, unlocking the rotary valve cover and the valve head. Then, the rotary valve cover rotates in the opposite direction around the positioning pin and disengages from the C-shaped limiting cavity of the valve head, allowing the tubing on the rotary valve cover to be removed or replaced.

[0016] Furthermore, to achieve rapid positioning of the split cylinder body and valve head, complementary convex rings and grooves are respectively provided on the connecting surfaces of the valve head and the split cylinder body. During assembly, the convex rings are embedded in the grooves to achieve rapid positioning and installation. Then, the valve head is fixed to the front end face of the split cylinder body using multiple hexagon socket screws, each equipped with a spring washer. The positions of the convex rings and grooves on the valve head and the split cylinder body are arbitrary; preferably, the convex rings are located on the upper end face of the valve head, and the grooves are located on the lower end face of the split cylinder body.

[0017] Furthermore, it also includes a first rubber ring and a second rubber ring. The first rubber ring is disposed at the bottom of the groove to achieve sealing and buffering between the convex ring and the groove between the valve head and the split cylinder body. The second rubber ring is disposed on the stepped surface outside the valve head.

[0018] The beneficial effects of this utility model are: 1. The valve body design is optimized by designing the actuator and clamping assembly as two independent modules. The clamping assembly is a replaceable structure. For different specifications of pipelines, only the clamping ball head and clamping assembly (i.e., valve head and flip valve cover) of different specifications need to be replaced. The actuator can be replaced to achieve sealing of different specifications of pipelines, which improves the applicability and versatility of the pinch valve and reduces the cost of using the pinch valve.

[0019] 2. The valve cover structure has been optimized, replacing the traditional fixed-opening valve cover with a flip-type cover. The flexible hose installation opening of the flip-type cover is larger than or equal to the diameter of the silicone tubing, allowing for quick installation of both flexible and rigid tubing. Furthermore, the flip-type cover is secured to the valve head with a spring-loaded clip; simply press the spring switch to open the cover and replace the piping. The entire replacement process requires no tools, making it convenient, quick, and efficient.

[0020] 3. The valve cover and seat are integrated into one design. When installing or replacing the pipeline, the client only needs to press the spring switch to open the valve cover. The valve cover flips and moves the pipeline. After flipping 90°, the valve cover brings the hose out of the valve head, and the pipeline can be replaced. The entire installation and replacement process is outside the clamping position of the pneumatic clamp valve, so there is no safety risk. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is an exploded structural diagram of the flip-top pneumatic clamp valve of this utility model.

[0023] Figure 2 This is a three-dimensional structural diagram of the flip-top pneumatic clamp valve of this utility model.

[0024] Figure 3 This is a schematic diagram of the main structure of the flip-top pneumatic clamp valve of this utility model.

[0025] Figure 4 This is a cross-sectional structural diagram of the flip-top pneumatic clamp valve of this utility model.

[0026] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure at point A in the middle.

[0027] Figure 6 This is a schematic diagram of the structure of the valve head pressing down to close the pipeline.

[0028] Figure 7 This is a schematic diagram of the structure that opens the pipeline after the valve head is raised.

[0029] In the diagram: 1. Split cylinder body; 2. Normally open rear end cover; 3. First sealing ring; 4. Hole retaining ring; 5. Piston; 6. Second sealing ring; 7. Third sealing ring; 8. Fourth sealing ring; 9. Piston retaining ring; 10. Magnet; 11. Piston rod; 12. Normally open front end cover; 13. Fifth sealing ring; 14. Fixing plate; 15. Magnetic switch adjusting block; 16. Magnetic switch; 17. Normally open clamp valve spring; 18. Cross-shaped countersunk screw; 19. Compression ball head; 20. Valve head. 1. Slot; 20.2. C-type limiting cavity; 21. Rotary valve cover; 21.1. Switch mounting cavity; 22. Manual switch; 22.1. Plug; 22.2. Paddle; 23. Positioning pin; 24. Switch spring; 25. Slotted headless screw; 26. Cover plate; 27. Flathead Phillips head screw; 28. Spring washer; 29. ​​First rubber ring; 30. Second rubber ring; 31. Slotted headless screw; 32. Hex socket head cap screw; 33. Pipeline; 34. Valve cavity; 35. Sixth sealing ring. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figures 1-7 As shown, this utility model discloses a flip-top pneumatic clamp valve, comprising a valve body, a piston assembly, a valve head 20, a clamping ball head 19, a rotary valve cover 21, and a manual locking assembly. The valve head 20 is connected to the front end of the valve body and has a C-shaped limiting cavity 20.2 with a lateral opening. The piston assembly is disposed in the valve cavity 34 inside the valve body, and its front end is connected to the clamping ball head 19. The piston assembly can drive the clamping ball head 19 to move axially along the valve body and extend forward into the C-shaped limiting cavity 20.2 of the valve head 20. A rotating valve cover 21 is rotatably connected to the valve head 20 at the lower end of the opening side of the C-shaped limiting cavity 20.2 via a positioning pin 23. The shaft of the positioning pin 23 is fixed in the shaft hole by a slotted headless screw 25. The rotating valve cover 21 is provided with a clamping groove for positioning the pipeline 33. The manual locking component is located in the rotating valve cover 21 at the end away from the positioning pin 23. The rotating valve cover 21 can be inserted into or removed from the C-shaped limiting cavity 20.2 by rotating around the positioning pin 23. The manual locking component is used to lock the rotating valve cover 21 and the valve head 20. The C-shaped limiting cavity 20.2 is formed by two side plates with C-shaped openings on the left and right sides together with the valve head 20. When the rotating valve cover 21 is inserted into the C-shaped limiting cavity 20.2, it is located between the two side plates. The rotary valve cover 21 is C-shaped in general. The clamping groove is located on the inner side of the C-shaped structure. The clamping groove is an arc-shaped groove with an opening. The opening size of the clamping groove is greater than or equal to the diameter of the clamping pipe 33.

[0034] like Figure 4As shown, the valve body includes a split cylinder body 1, a normally open rear end cover 2, a normally open front end cover 12, a fixing plate 14, a magnetic switch 16, and a magnetic switch adjusting block 15. The split cylinder body 1 has a hollow structure. The normally open rear end cover 2 is sealed at the rear of the split cylinder body 1 and fixed by a retaining ring 4 through a hole. The normally open front end cover 12 is sealed at the front of the split cylinder body 1. A magnetic switch mounting groove is provided on the left side of the split cylinder body 1. One end of the magnetic switch 16 is set in the magnetic switch mounting groove, and a magnetic switch adjusting block 15 is provided between the magnetic switch 16 and the split cylinder body 1. The magnetic switch mounting groove on the outside of the magnetic switch 16 is sealed by the fixing plate 14, fixing the magnetic switch 16 and the magnetic switch adjusting block 15 in the magnetic switch mounting groove. The fixing plate 14 is fixed to the split cylinder body 1 by a cross-slot countersunk screw 18. In order to achieve a seal between the front and rear end caps and the cylinder body, a first sealing ring 3 is provided between the normally open front end cap 12 and the inner wall of the split cylinder body 1 for sealing, and a sixth sealing ring 35 is provided between the normally open rear end cap 2 and the inner wall of the split cylinder body 1 for sealing.

[0035] like Figure 1 and Figure 4As shown, the piston assembly includes a piston 5, a piston retaining ring 9, a piston rod 11, a normally open clamp valve spring 17, and a magnet 10 disposed within the valve chamber 34. The piston 5 is axially slidably connected within the valve chamber 34. The rear end of the piston rod 11 is connected to the piston 5, and the piston 5 and piston rod 11 are locked and fixed by the piston retaining ring 9. The front end of the piston rod 11 extends forward out of the valve chamber 34, and the end is connected to a clamping ball head 19. In this embodiment, the clamping ball head 19 is connected to the front end of the piston rod 11 by a slotted headless screw 31. An annular groove is provided on the outer wall of the piston 5, and an annular magnet 10 is disposed within the annular groove. The magnet 10 is located between the piston 5 and the inner wall of the valve chamber 34. The normally open clamp valve spring 17 is sleeved on the outside of the piston rod 11, with its upper end connected to the piston 5 and its lower end connected to the normally open front end cover 12, providing elastic support between the piston 5 and the normally open front end cover 12. In this embodiment, the magnet 10 is a neodymium iron boron magnet 10. The normally open clamp valve spring 17 is used to reset the piston 5, causing the piston rod 11 and the clamping ball head 19 to lift upwards. It also includes a second sealing ring 6, a third sealing ring 7, a fourth sealing ring 8, and a fifth sealing ring 13. The second sealing ring 6 is located outside the piston 5 and between the piston 5 and the inner wall of the valve chamber 34, achieving a seal between the piston 5 and the split cylinder body 1. The third sealing ring 7 is located between the piston retaining ring 9 and the contact surface of the upper end of the piston 5, achieving a seal between the piston retaining ring 9 and the piston 5. The fourth sealing ring 8 is located between the piston 5 and the piston rod 11, achieving a seal between the piston 5 and the piston rod 11. The fifth sealing ring 13 is located between the normally open front cover 12 and the piston rod 11, achieving a seal between the connecting surfaces of the normally open front cover 12 and the piston rod 11. The third sealing ring 7 and the fifth sealing ring 13 are dynamic seals, while the second sealing ring 6 and the fourth sealing ring 8 are static seals.

[0036] like Figure 5As shown, the manual locking assembly includes a manual switch 22 and a switch spring 24. The rotary valve cover 21 has a switch mounting cavity 21.1. The manual switch 22 is disposed in the switch mounting cavity 21.1 and has a plug 22.1 and a lever 22.2. Both the plug 22.1 and the lever 22.2 extend outward from the switch mounting cavity 21.1. The valve head 20 has a slot 20.1 that is adapted to the plug 22.1. The switch spring 24 is elastically supported in the switch mounting cavity 21.1 between the manual switch 22 and the rotary valve cover 21 at the end away from the plug 22.1. One end of the switch spring 24 abuts against the inner wall of the switch mounting cavity 21.1, and the other end abuts against the manual switch 22. The opening of the switch mounting cavity 21.1 is provided with a cover plate 26, which is fixedly connected to the rotary valve cover by a flat-head Phillips screw 27. The rotary valve cover 21 rotates forward around the positioning pin 23 and is embedded in the C-shaped limiting cavity 20.2. The plug 22.1 is inserted into the slot 20.1 under the elastic force of the switch spring 24, thereby locking the rotary valve cover 21 and the valve head 20. Pressing down the lever 22.2 compresses the switch spring 24, causing the plug 22.1 to disengage from the slot 20.1, unlocking the rotary valve cover 21 and the valve head 20. Then, the rotary valve cover 21 rotates in the opposite direction around the positioning pin 23 and disengages from the C-shaped limiting cavity 20.2 of the valve head 20, allowing the pipe 33 on the rotary valve cover 21 to be removed or replaced.

[0037] like Figure 7 As shown, to achieve rapid positioning of the split cylinder body 1 and the valve head 20, complementary convex rings and grooves are respectively provided on the connecting surfaces of the valve head 20 and the split cylinder body 1. During assembly, the convex rings are embedded in the grooves to achieve rapid positioning and installation. Then, the valve head 20 is fixed to the front end face of the split cylinder body 1 by multiple hexagon socket screws 32. Spring washers 28 are also provided on the hexagon socket screws 32. The positions of the convex rings and grooves on the valve head 20 and the split cylinder body 1 are arbitrary. In this embodiment, the convex rings are set on the upper end face of the valve head 20, and the grooves are set on the lower end face of the split cylinder body 1. It also includes a first rubber ring 29 and a second rubber ring 30. The first rubber ring 29 is set at the bottom of the groove to achieve sealing and buffering between the convex rings and grooves between the valve head 20 and the split cylinder body 1. The second rubber ring 30 is set on the stepped surface outside the valve head 20.

[0038] The installation of this flip-top pneumatic clamp valve is divided into two parts: the piston assembly is when the clamping ball 19 faces upward, and the clamping assembly is when the clamping ball 19 faces downward. The clamping ball 19 and the clamping assembly are replaceable structures.

[0039] 1. Working process of pinch valve like Figure 4 and Figure 6As shown, air enters through the air inlet of the split cylinder 1. The air pressure pushes the piston 5, which in turn drives the piston rod 11. The piston rod 11 is connected to the pressing ball head 19, which moves downward. The pressing ball head 19 presses down on the pipeline 33, thus sealing the pipeline 33.

[0040] like Figure 7 As shown, the air passage of the split cylinder 1 is closed, the normally open clamp valve spring 17 pushes the piston 5 to pull up the piston rod 11, and the piston rod 11 drives the clamping ball head 19 to move upward, thereby opening the pipeline 33.

[0041] 2. Replacement process of pipe 33 The specific assembly procedure for installing the pinch valve is as follows: (1) The threaded hole on the valve head 20 is fixed to the threaded connection of the equipment; (2) Connect the air pipe connector to the thread at the 1NO point of the split cylinder block, and the installation is complete.

[0042] The specific assembly procedure for replacing silicone tubing 33 is as follows: (1) Turn off the gas circuit switch; (2) Press the manual switch 22, open the flip valve cover and flip it clockwise to 90°, then take out the disposable silicone tubing 33; (3) Replace the old disposable silicone tubing 33 and insert it into the arc groove of the flip valve cover; (4) Rotate counterclockwise 90°, press manual switch 22, and close the flip valve cover; the replacement of disposable silicone tubing 33 is complete.

[0043] The entire installation and replacement process takes place outside the clamping position of the pneumatic clamp valve, posing no safety risks and requiring no tools, making it efficient and quick.

[0044] 3. Clamping component replacement process: (1) Turn off the gas circuit switch; (2) Remove the four hex socket screws 32 to remove the valve head 20, and then remove the clamping assembly (valve head 20 and rotating valve cover 21). (3) Remove the slotted headless screw 31 and take off the clamping ball head 19; (4) Replace the appropriate disposable silicone tubing with a compression ball head 19 of model 33 and tighten the slotted headless screw 31; (5) Replace with a suitable disposable silicone tubing clamping assembly of model 33, tighten the four internal hex screws 32, and the clamping assembly replacement is complete.

[0045] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A flip-top type pneumatic clamp valve, characterized in that: The device includes a valve body, a piston assembly, a valve head, a clamping ball head, a rotary valve cover, and a manual locking assembly. The valve head is connected to the front end of the valve body and has a C-shaped limiting cavity with a lateral opening. The piston assembly is located in the valve cavity inside the valve body, and its front end is connected to the clamping ball head. The piston assembly can drive the clamping ball head to move axially along the valve body and extend forward into the C-shaped limiting cavity of the valve head. The lower end of the valve head on the opening side of the C-shaped limiting cavity is rotatably connected to the rotary valve cover via a positioning pin. The rotary valve cover has a clamping groove for pipeline positioning. The manual locking assembly is located in the rotary valve cover at the end away from the positioning pin. The rotary valve cover can be inserted into or removed from the C-shaped limiting cavity by rotating around the positioning pin. The manual locking assembly is used to lock the rotary valve cover and the valve head.

2. The flip-top pneumatic clamp valve as described in claim 1, characterized in that: The valve body includes a split cylinder body, a normally open rear end cover, a normally open front end cover, a fixing plate, a magnetic switch, and a magnetic switch adjustment block. The split cylinder body has a hollow structure. The normally open rear end cover is sealed at the rear of the split cylinder body and fixed by a retaining ring through a hole. The normally open front end cover is sealed at the front of the split cylinder body. A magnetic switch mounting slot is provided on the left side of the split cylinder body. One end of the magnetic switch is set in the magnetic switch mounting slot, and a magnetic switch adjustment block is provided between the magnetic switch and the split cylinder body. The magnetic switch mounting slot on the outside of the magnetic switch is sealed by a fixing plate, fixing the magnetic switch and the magnetic switch adjustment block in the magnetic switch mounting slot.

3. The flip-top pneumatic clamp valve as described in claim 2, characterized in that: A first sealing ring is provided between the normally open front end cover and the inner wall of the split cylinder for sealing, and a sixth sealing ring is provided between the normally open rear end cover and the inner wall of the split cylinder for sealing.

4. The flip-top pneumatic clamp valve as described in claim 2, characterized in that: The piston assembly includes a piston, a piston retaining ring, a piston rod, a normally open clamp valve spring, and a magnet disposed within the valve chamber. The piston is axially slidably connected within the valve chamber. The rear end of the piston rod is connected to the piston, and the piston and piston rod are locked and fixed by the piston retaining ring. The front end of the piston rod extends forward out of the valve chamber, and the end is connected to a clamping ball head. An annular groove is provided on the outer wall of the piston, and an annular magnet is disposed within the annular groove. The magnet is located between the piston and the inner wall of the valve chamber. The normally open clamp valve spring is sleeved on the outside of the piston rod, with its upper end connected to the piston and its lower end connected to the normally open front end cap, providing elastic support between the piston and the normally open front end cap.

5. The flip-top pneumatic clamp valve as described in claim 4, characterized in that: It also includes a second sealing ring, a third sealing ring, a fourth sealing ring, and a fifth sealing ring. The second sealing ring is disposed on the outside of the piston and between the piston and the inner wall of the valve chamber, achieving a seal between the piston and the split cylinder body. The third sealing ring is disposed between the piston retaining ring and the contact surface at the upper end of the piston, achieving a seal between the piston retaining ring and the piston. The fourth sealing ring is disposed between the piston and the piston rod, achieving a seal between the piston and the piston rod. The fifth sealing ring is disposed between the normally open front end cap and the piston rod, achieving a seal between the normally open front end cap and the connecting surface of the piston rod.

6. The flip-top pneumatic clamp valve as described in claim 1, characterized in that: The rotary valve cover is C-shaped, and the clamping groove is located on the inner side of the C-shaped structure. The clamping groove is an arc-shaped groove with an opening, and the opening size of the clamping groove is greater than or equal to the diameter of the clamping pipeline.

7. The flip-top pneumatic clamp valve as described in claim 1, characterized in that: The manual locking assembly includes a manual switch and a switch spring. The rotary valve cover has a switch mounting cavity, and the manual switch is disposed in the switch mounting cavity. The manual switch has a plug and a lever, both of which extend outward from the switch mounting cavity. The valve head has a slot adapted to the plug. The switch spring is elastically supported in the switch mounting cavity between the manual switch and the rotary valve cover at the end away from the plug. One end of the switch spring abuts against the inner wall of the switch mounting cavity, and the other end abuts against the manual switch. The opening of the switch mounting cavity has a cover plate, which is fixedly connected to the rotary valve cover by a flat-head Phillips screw.

8. The flip-top pneumatic clamp valve as described in claim 1, characterized in that: The valve head and the split cylinder body are respectively provided with complementary convex rings and grooves on their connecting surfaces. During assembly, the convex rings are embedded in the grooves.

9. The flip-top pneumatic clamp valve as described in claim 8, characterized in that: It also includes a first rubber ring and a second rubber ring. The first rubber ring is disposed at the bottom of the groove to achieve sealing and buffering between the convex ring and the groove between the valve head and the split cylinder body. The second rubber ring is disposed on the stepped surface outside the valve head.

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