Modularized detachable pneumatic valve actuating mechanism
By using a modular design and a pneumatic valve actuator with pressure regulation function, the problems of difficult disassembly and non-adjustable spring pressure in the existing technology have been solved, achieving convenient maintenance and cost optimization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANSHAN THERMOTECHN INSTR VALVE
- Filing Date
- 2025-06-03
- Publication Date
- 2026-04-17
AI Technical Summary
Existing pneumatic actuators have internal components that are difficult to disassemble and replace easily, and the pressure of the return spring cannot be adjusted, resulting in difficult maintenance and high costs.
It adopts a modular design, which allows for easy disassembly through the combination of through holes, air pipes, reset plates and cover plates; and allows for pressure regulation through the combination of threaded pipes, threaded rods and movable plates.
It enables convenient maintenance and spring pressure adjustment of pneumatic valve actuators, reducing maintenance difficulty and cost.
Smart Images
Figure CN224135280U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pneumatic valve technology, specifically to a modular and detachable pneumatic valve actuator. Background Technology
[0002] A pneumatic actuator is a device that uses compressed air as a power source to convert the pressure energy of compressed air into mechanical energy, thereby controlling and operating equipment such as valves.
[0003] In existing pneumatic actuators, the internal components are mostly fixed to the housing by welding. When key components in the actuator, such as pistons and cylinders, are worn or damaged due to frequent reciprocating motion or harsh working environments, it is difficult for users to easily disassemble, repair, and replace them. Conventional disassembly methods often require specialized and complex tools, and may even require destructive removal of parts of the structure due to the firmness of the welded parts. This not only consumes a lot of manpower, material resources, and time, but may also damage other parts of the actuator, further increasing the difficulty and cost of maintenance.
[0004] To address the above technical issues, we designed a modular, detachable pneumatic valve actuator. Utility Model Content
[0005] The purpose of this utility model is to provide a modular and detachable pneumatic valve actuator, which has the advantages of convenient maintenance due to its modular design and pressure regulation function. It solves the problems of existing pneumatic actuators, which are inconvenient for users to disassemble and replace their internal components and cannot adjust the pressure of the return spring.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a modular, detachable pneumatic valve actuator, comprising a housing, a drive rod movably connected to the bottom of the housing via a bearing, a gear connected to the top of the drive rod via bolts, a through hole on the right side of the housing, an air pipe passing through the right side of the through hole, the left end of the air pipe extending into the inner cavity of the housing and communicating with a cylinder, a piston movably connected to the inner cavity of the cylinder, a rack riveted to the rear side of the left side of the piston, an adjustment mechanism movably connected to the left side of the inner cavity of the housing via a bearing, the adjustment mechanism comprising a threaded tube, a threaded rod threadedly connected to the inner cavity of the threaded tube, a movable plate riveted to the right end of the threaded rod, springs bolted to the front and rear sides of the right side of the movable plate, a reset plate bolted to the right end of the springs, and a cover plate placed on the top of the housing.
[0007] Preferably, a knob is movably connected through the left side of the housing, the right end of the knob is riveted to a threaded tube, and guide rods are riveted to the front and rear sides of the left side of the movable plate. A guide tube is movably sleeved on the surface of the guide rod, and the left end of the guide tube is riveted to the inner wall of the housing.
[0008] Preferably, a T-slot is provided on the rear side of the right side of the reset plate, and a T-block is riveted to the left side of the rack, with the left side of the T-block extending into the inner cavity of the T-slot.
[0009] Preferably, guide blocks are riveted to both the front and rear sides of the reset plate, and guide grooves are provided on both the front and rear sides of the inner cavity of the housing, with the opposite side of each guide block extending into the inner cavity of the guide groove.
[0010] Preferably, the front side of the rack meshes with a gear, and an observation window is inlaid on the top of the cover plate.
[0011] Preferably, a fastening nut is threaded onto the surface of the air tube, and the left side of the fastening nut contacts the housing.
[0012] Preferably, limit plates are riveted to the front and rear sides of both sides of the cover plate, hooks are riveted to both sides of the front and rear sides of the cover plate, and locking blocks that match the hooks are fixedly connected to both sides of the front and rear sides of the housing.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This utility model has the advantages of modular design and convenient maintenance through the cooperation of through hole, air pipe, reset plate and cover plate. When the piston and cylinder need to be replaced, pull the hook to release the limit of the cover plate, then take the cover plate upward, then loosen the fastening nut and move the cylinder upward, so as to take out the cylinder, piston and rack for replacement.
[0015] 2. This utility model has a pressure adjustment function through the cooperation of threaded tube, threaded rod and movable plate. When the elastic potential energy of the spring decreases, the knob is rotated, the knob drives the threaded tube to rotate, at this time the threaded rod begins to move to the right, the threaded rod drives the movable plate to move to the right, the movable plate pushes the spring to move, thereby compressing the spring and further increasing the elastic potential energy of the spring. Attached Figure Description
[0016] Figure 1 This is a three-dimensional view of the structure of this utility model;
[0017] Figure 2 This is a three-dimensional top view of a partial structure of this utility model;
[0018] Figure 3 This is a perspective view of the cover plate structure of this utility model;
[0019] Figure 4 This is a three-dimensional left view of a partial structure of this utility model;
[0020] Figure 5 This is a three-dimensional bottom view of the shell structure of this utility model;
[0021] Figure 6 This is a three-dimensional view of the resetting plate structure of this utility model;
[0022] Figure 7 This is a three-dimensional sectional view of the cylindrical structure of this utility model.
[0023] In the diagram: 1. Housing; 2. Drive rod; 3. Gear; 4. Through hole; 5. Air pipe; 6. Cylinder; 7. Piston; 8. Rack; 9. Threaded pipe; 10. Threaded rod; 11. Movable plate; 12. Spring; 13. Reset plate; 14. Cover plate; 15. Knob; 16. Guide rod; 17. Guide tube; 18. T-slot; 19. T-block; 20. Guide block; 21. Guide groove; 22. Observation window; 23. Fastening nut; 24. Limiting plate; 25. Hook; 26. Locking block; 27. Adjustment mechanism. Detailed Implementation
[0024] Please see Figures 1-7 A modular, detachable pneumatic valve actuator includes a housing 1. A drive rod 2 is movably connected to the bottom of the housing 1 via a bearing. A gear 3 is bolted to the top of the drive rod 2. A through hole 4 is provided on the right side of the housing 1, through which an air pipe 5 is installed. When gas is introduced into the air pipe 5, the gas pushes a piston 7 to move within a cylinder 6, thereby driving a rack 8 to move linearly. This structure converts the pressure energy of the gas into mechanical energy, achieving pneumatic drive. The left end of the air pipe 5 extends into the inner cavity of the housing 1 and connects to the cylinder 6. A piston 7 is movably connected to the inner cavity of the cylinder 6. A rack 8 is riveted to the rear left side of the piston 7. The left side of the inner cavity of the housing 1 is movably connected via a bearing. An adjustment mechanism 27 is connected, which includes a threaded tube 9. A threaded rod 10 is threadedly connected to the inner cavity of the threaded tube 9. A movable plate 11 is riveted to the right end of the threaded rod 10. Springs 12 are bolted to the front and rear sides of the right side of the movable plate 11. By setting the springs 12, when the piston 7 pushes the rack 8 to move under the action of gas, the rack 8 drives the reset plate 13 to compress the springs 12 through the T-block 19. When the gas pressure disappears, the elastic force of the springs 12 resets the reset plate 13 and the rack 8, thereby realizing the automatic reset function of the pneumatic valve and ensuring the reliability and stability of the actuator. The reset plate 13 is bolted to the right end of the spring 12, and a cover plate 14 is placed on the top of the housing 1.
[0025] Please see Figure 1 , Figure 2 and Figure 4A knob 15 is movably connected through the left side of the housing 1. The right end of the knob 15 is riveted to the threaded tube 9. Guide rods 16 are riveted to the front and rear sides of the left side of the movable plate 11. A guide tube 17 is movably sleeved on the surface of the guide rod 16. By setting the guide tube 17 and the guide rod 16, the cooperation between the guide rod 16 and the guide tube 17 can guide the movement of the movable plate 11, ensure the stability of the movable plate 11 during linear movement, and prevent the movable plate 11 from deviating. The left end of the guide tube 17 is riveted to the inner wall of the housing 1.
[0026] Please see Figure 2 and Figure 6 A T-slot 18 is provided on the rear side of the right side of the reset plate 13, and a T-block 19 is riveted to the left side of the rack 8. By setting the T-slot 18 and the T-block 19, a reliable connection and transmission can be achieved between the rack 8 and the reset plate 13, while ensuring the stability of the relative position between the two and preventing separation or misalignment during movement. The left side of the T-block 19 extends into the inner cavity of the T-slot 18.
[0027] Please see Figure 2 Guide blocks 20 are riveted to both the front and rear sides of the reset plate 13. Guide grooves 21 are provided on both the front and rear sides of the inner cavity of the housing 1. The cooperation between the guide blocks 20 and the guide grooves 21 can guide and limit the movement of the reset plate 13, ensuring the stability and accuracy of the reset plate 13 during linear movement and preventing the reset plate 13 from shaking or deviating. The opposite side of the guide blocks 20 extends into the inner cavity of the guide grooves 21.
[0028] Please see Figure 1 and Figure 2 The front side of the rack 8 meshes with the gear 3, and the top of the cover plate 14 is fitted with an observation window 22.
[0029] Please see Figure 2 The surface of the trachea 5 is threaded with a fastening nut 23, and the left side of the fastening nut 23 is in contact with the housing 1.
[0030] Please see Figure 1 Limiting plates 24 are riveted to both the front and rear sides of the cover plate 14. Hooks 25 are riveted to both sides of the front and rear sides of the cover plate 14. Blocks 26 that are compatible with the hooks 25 are fixedly connected to both sides of the front and rear sides of the housing 1. Through the cooperation of the hooks 25 and the blocks 26, the cover plate 14 can be easily fixed to the housing 1, and it is also easy to disassemble and maintain and repair the components inside the housing 1.
[0031] In use, connect the air pipe 5 to the output end of the air pump, connect the housing 1 to the top of the valve body via the mounting bracket, and connect the bottom end of the drive rod 2 to the valve stem. Driven by the high-pressure gas from the air pump, the piston 7 moves to the left, which in turn drives the rack 8 to move to the left. The rack 8 drives the gear 3 to rotate, which in turn drives the drive rod 2 and the valve stem to rotate, thereby opening the valve body. When the air pump stops supplying air, the reset plate 13 begins to move to the right under the action of the spring 12, pushing the piston 7 back to the rightmost side of the inner cavity of the cylinder 6, thus closing the valve body. When the elastic potential energy of the spring 12 decreases, the rack 8 can no longer fully close. Reset, causing the pneumatic valve to fail to close completely. At this point, rotate knob 15, which drives threaded tube 9 to rotate. Threaded rod 10 then moves to the right, driving movable plate 11 to move to the right. Movable plate 11 pushes spring 12 to move, thereby compressing spring 12 and further increasing its elastic potential energy, allowing the pneumatic valve to close completely. When piston 7 and cylinder 6 need to be replaced, pull hook 25 to release the limit on cover plate 14, then lift cover plate 14 upwards. Subsequently, loosen fastening nut 23 and move cylinder 6 upwards, thereby removing cylinder 6, piston 7, and rack 8 for replacement.
[0032] In summary, this modular detachable pneumatic valve actuator, through the cooperation of through hole 4, air pipe 5, reset plate 13, cover plate 14, threaded pipe 9, threaded rod 10 and movable plate 11, solves the problems of existing pneumatic actuators, such as the inconvenience for users to disassemble and replace their internal components and the inability to adjust the pressure of the reset spring.
Claims
1. Modular dismountable pneumatic valve actuator comprising a housing (1), characterized in that: The bottom of the housing (1) is movably connected to a drive rod (2) via a bearing. The top of the drive rod (2) is connected to a gear (3) via bolts. A through hole (4) is provided on the right side of the housing (1). An air pipe (5) is provided through the right side of the through hole (4). The left end of the air pipe (5) extends into the inner cavity of the housing (1) and communicates with a cylinder (6). A piston (7) is movably connected to the inner cavity of the cylinder (6). A rack (8) is riveted to the rear left side of the piston (7). (1) An adjustment mechanism (27) is movably connected to the left side of the inner cavity via a bearing. The adjustment mechanism (27) includes a threaded tube (9). A threaded rod (10) is threadedly connected to the inner cavity of the threaded tube (9). A movable plate (11) is riveted to the right end of the threaded rod (10). A spring (12) is bolted to the front and rear sides of the right side of the movable plate (11). A reset plate (13) is bolted to the right end of the spring (12). A cover plate (14) is placed on the top of the housing (1).
2. The modular, detachable, pneumatic valve actuator of claim 1, wherein: A knob (15) is movably connected through the left side of the housing (1). The right end of the knob (15) is riveted to the threaded tube (9). Guide rods (16) are riveted to the front and rear sides of the left side of the movable plate (11). A guide tube (17) is movably sleeved on the surface of the guide rod (16). The left end of the guide tube (17) is riveted to the inner wall of the housing (1).
3. The modular, detachable, pneumatic valve actuator of claim 1, wherein: A T-slot (18) is provided on the rear side of the right side of the reset plate (13), and a T-block (19) is riveted to the left side of the rack (8). The left side of the T-block (19) extends into the inner cavity of the T-slot (18).
4. The modular, detachable, pneumatic valve actuator of claim 1, wherein: The reset plate (13) is riveted with guide blocks (20) on both the front and rear sides. The housing (1) has guide grooves (21) on both the front and rear sides. The opposite side of the guide blocks (20) extends into the inner cavity of the guide grooves (21).
5. The modular, detachable, pneumatic valve actuator of claim 1, wherein: The front side of the rack (8) meshes with the gear (3), and the top of the cover plate (14) is fitted with an observation window (22).
6. The modular, detachable, pneumatic valve actuator of claim 1, wherein: The surface of the air pipe (5) is threaded with a fastening nut (23), and the left side of the fastening nut (23) is in contact with the housing (1).
7. The modular, detachable, pneumatic valve actuator of claim 1, wherein: Limiting plates (24) are riveted to the front and rear sides of the cover plate (14), and hooks (25) are riveted to both sides of the front and rear sides of the cover plate (14). The front and rear sides of the housing (1) are fixedly connected with locking blocks (26) that are compatible with the hooks (25).