CN210566582U

CN210566582U - Compact manual device for pneumatic actuator

Info

Publication number: CN210566582U
Application number: CN201921120651.9U
Authority: CN
Inventors: 胡冰; 陈超; 何楚天; 陈君
Original assignee: Wuxi Aishengtuoke Fluid Control Co ltd
Current assignee: Wuxi Aishengtuoke Fluid Control Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-05-19
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a compact manual device for a pneumatic actuator, which comprises a shell and a hand wheel, wherein the left side of the shell is provided with a rear cover, the periphery of the rear cover is provided with a first bolt, the first bolt is connected with the shell through a thread, the right side of the shell is provided with a vent hole, the right side of the vent hole is provided with a front cover, one side of the front cover close to the shell is provided with a plurality of spring hooks, the spring hooks are connected with springs, one end of each spring, which is far away from the spring, is connected with a piston, one side of each piston, which is far away from the spring, is hinged with a first transmission rod, and one end of each transmission rod, which is far away from the piston, is hinged with a second transmission rod. The requirement on the shell is lower, meanwhile, the hand wheel which can be disassembled can be manually adjusted, and the adjustment is visual and convenient.

Description

Compact manual device for pneumatic actuator

Technical Field

The utility model relates to a valve control technical field specifically is a compact manual device for pneumatic actuator.

Background

The pneumatic actuator is a valve control actuator using compressed gas as a driving force, and the opening and closing of the valve is controlled by the pneumatic actuator, which is also commonly referred to as a pneumatic actuator or a pneumatic head. At present, the rack and pinion type pneumatic actuating mechanism has the advantages of simple structure, stable and reliable action, safety, explosion resistance and the like, and is widely applied to the fields of power generation, chemical industry, oil refining and the like. The existing gear-rack type pneumatic actuating mechanism comprises a cylinder body, pistons, racks and a gear shaft, wherein the two pistons are installed in the cylinder body, the two pistons are respectively connected with the racks, the gear shaft is hinged to the middle part of the cylinder body, and the two racks are respectively arranged on two sides of the gear shaft and are respectively meshed with the gear shaft. When the valve works, compressed air is introduced into a cylinder body cavity between the two pistons and a cylinder body cavity outside the two pistons, the two pistons are far away from or close to each other and drive the gear shaft to rotate through the rack, and the output end of the gear shaft is connected with the valve rod of the valve, so that the aim of controlling the opening and closing of the valve is fulfilled.

The gear and rack type pneumatic actuating mechanism has the following technical defects: in order to make the gear shaft atress even, adopt two symmetrical pistons and two rack structures usually, the structure is complicated, and is with high costs, and the installation of being inconvenient, simultaneously to the requirement of casing higher, the operation and the maintenance inspection of operating personnel of being inconvenient for are taken turns to current hand. Accordingly, one skilled in the art has provided a compact manual apparatus for a pneumatic actuator that solves the problems set forth in the background above.

Disclosure of Invention

An object of the utility model is to provide a compact hand-operated device for pneumatic actuator to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a compact manual device for a pneumatic actuator comprises a shell and a hand wheel, wherein a rear cover is arranged on the left side of the shell, a first bolt is arranged on the periphery of the rear cover and is in threaded connection with the shell, an air outlet hole is formed in the right side of the shell, a front cover is arranged on the right side of the air outlet hole, a second bolt is arranged on the periphery of the front cover and is in threaded connection with the shell, an air inlet hole is formed in the middle of the front cover and penetrates through the front cover to be communicated with the inside of the shell, a plurality of spring hooks are arranged on one side, close to the shell, of the front cover and are connected with springs, one ends, far away from the spring hooks, of the springs are connected with pistons, a first transmission rod is hinged to one side, far away from the springs, of the first transmission rod is hinged to a second transmission rod, one ends, far away from the first transmission rod, of the second transmission rod, one side of the sliding strip is provided with a rack, a gear is arranged below the rack, the gear is fixedly connected with a rotating shaft with the same axle center, the rotating shaft is fixedly provided with a dial outside the shell, one end of the rotating shaft, far away from the gear, is provided with a square flange, and a circular dial is coaxially arranged outside the shell through an axle.

As a further aspect of the present invention: the contact surfaces of the shell, the rear cover and the front cover are respectively provided with a sealing ring, and the sealing rings are provided with holes for threads to pass through, so that the sealing property of the shell is kept.

As a further aspect of the present invention: the fixture block is located at the limit position of the left end of the piston, the piston is limited, the piston is prevented from moving leftwards excessively, the transmission rod II is abutted against the transmission rod I, and a component is damaged.

As a further aspect of the present invention: the outside of calibrated scale is equipped with the scale of turned angle on the casing, and when the valve was in the closed condition, the zero scale of turning circular calibrated scale corresponded with outlying zero degree angle to judge and adjust the angle of valve.

As a further aspect of the present invention: and when the piston is at the limit position, the second transmission rod and the horizontal central axis of the shell form an included angle of 45 degrees.

As a further aspect of the present invention: the end part of the rotating shaft center of the hand wheel is provided with a groove matched with the flange of the rotating shaft, and the hand wheel is provided with a foldable handle, so that the hand wheel is clamped on the rotating shaft, and the valve is manually adjusted.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses simple structure realizes automatic control through the air current, through the transmission of transfer line one and transfer line two, turns into the rotation of axis of rotation with the change of atmospheric pressure, through lever principle, general pneumatic actuator of comparison can effectually reduce the pressure of atmospheric pressure and reach same purpose, and is lower to the requirement of casing, simultaneously, can carry out manual adjustment through the hand wheel that can dismantle, adjusts directly perceived, convenient.

Drawings

Fig. 1 is a schematic view of a compact manual device for a pneumatic actuator.

Fig. 2 is a side view of a compact hand-operated device for a pneumatic actuator.

Fig. 3 is a schematic diagram of a hand wheel of a compact manual device for a pneumatic actuator.

Fig. 4 is a schematic view showing the structure of a rotary shaft in a compact manual device for a pneumatic actuator.

In the figure: 1. a housing; 2. a rear cover; 3. a first bolt; 4. a front cover; 5. a second bolt; 6. an air inlet; 7. a spring; 8. a piston; 9. a first transmission rod; 10. a second transmission rod; 11. a rotating shaft; 12. a clamping block; 13. a slide bar; 14. a gear; 15. a hand wheel; 16. handshaking; 17. a dial scale; 18. an air outlet; 19. a rotating shaft; 20. and a spring hook.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in the embodiment of the present invention, a compact manual device for a pneumatic actuator includes a housing 1 and a hand wheel 15, a rear cover 2 is disposed on the left side of the housing 1, a first bolt 3 is disposed on the periphery of the rear cover 2, the first bolt 3 is connected to the housing 1 through a screw, an air outlet 18 is disposed on the right side of the housing 1, a front cover 4 is disposed on the right side of the air outlet 18, a second bolt 5 is disposed on the periphery of the front cover 4, the second bolt 5 is connected to the housing 1 through a screw, an air inlet 6 is disposed in the middle of the front cover 4, the air inlet 6 is communicated with the interior of the housing 1 through the front cover 4, a plurality of spring hooks 20 are disposed on one side of the front cover 4 close to the housing 1, the spring hooks 20 are connected to springs 7, one end of the springs 7 far away from the spring hooks 20 is connected to a piston 8, one side of the piston, one end fixedly connected with axis of rotation 11 that transfer line 9 was kept away from to transfer line two 10, the fixed fixture block 12 that is equipped with in the inboard of casing 1 in the left of piston 8, at the inboard of piston 8's left casing 1 and piston 8 fixedly connected with slide bar 13, one side of slide bar 13 is equipped with the rack, the rack below is equipped with gear 14, gear 14 is with axle center fixedly connected with pivot 19, pivot 19 is fixed in the outside of casing 1 and is equipped with calibrated scale 17, the one end that gear 14 was kept away from to pivot 19 is equipped with square flange, is equipped with circular calibrated scale 17 in the outside of casing 1 through the axle is coaxial.

The contact surfaces of the shell 1, the rear cover 2 and the front cover 4 are respectively provided with a sealing ring, and the sealing rings are provided with holes for threads to pass through, so that the sealing performance of the shell 1 is kept.

The fixture block 12 is located at the limit position of the left end of the piston 8, and is limited to the piston 8, so that the piston 8 is prevented from moving leftwards excessively, the transmission rod II 10 is abutted against the transmission rod I9, and the component is damaged.

The outside of the dial 17 is provided with a scale of a rotation angle on the shell 1, when the valve is in a closed state, the zero scale of the rotation circular dial 17 corresponds to the peripheral zero angle, so that the angle of the valve is judged and adjusted.

When the piston 8 is at the limit position, the second transmission rod 10 and the horizontal central axis of the shell 1 form an included angle of 45 degrees.

The end part of the rotating shaft center of the hand wheel 15 is provided with a groove matched with the flange of the rotating shaft 19, and the hand wheel 15 is provided with a foldable handle 16, so that the hand wheel 15 is clamped on the rotating shaft 19, and the valve is manually adjusted.

The utility model discloses a theory of operation is: when the valve is used, in an automatic state, the air inlet hole 6 is filled with air, the air pressure on the right side of the shell 1 is increased, the air pushes the piston 8 to move leftwards, the spring 7 is stretched, the piston 8 drives the transmission rod I9 to move leftwards, the transmission rod I9 drives the rotating shaft 11 to rotate through the hinged transmission rod II 10, so as to drive an external valve to rotate, meanwhile, the sliding strip 13 drives the gear 14 to rotate, the rotating angle of the valve can be judged through the dial 17 on the shell 1, the air at the left end of the shell 1 is discharged through the air outlet hole 18, when the left side of the piston 8 contacts the clamping block 12, the piston 8 does not move any more under the limiting action of the clamping block 12, the transmission rod II 10 forms an included angle of 45 degrees with the horizontal central axis of the shell 1, the valve body reaches the maximum angle, the deformation amount of the spring 7 is the maximum, the dial 17 points to 90, the rotating shaft 11 is driven to rotate reversely, and finally returns to the initial position. When manual operation is needed, the groove on the hand wheel 15 is sleeved with the cam on the rotating shaft 19, the hand wheel 15 is rotated to drive the rotating shaft 19 to rotate, the gear 14 is driven by the rotating shaft 19 to drive the sliding strip 13 to move, so that the piston 8 is driven to move, the dial 17 is opposite to the dial, and the valve angle is adjusted.

The utility model discloses simple structure realizes automatic control through the air current, through the transmission of transfer line one 9 and transfer line two 10, turns into the rotation of axis of rotation 11 with the change of atmospheric pressure, through lever principle, general pneumatic actuator can effectually reduce the pressure of atmospheric pressure and reach same purpose, and is lower to casing 1's requirement, simultaneously, can carry out manual adjustment through the hand wheel 15 that can dismantle, adjusts directly perceived, convenient.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A compact manual device for a pneumatic actuator comprises a shell (1) and a hand wheel (15), and is characterized in that a rear cover (2) is arranged on the left side of the shell (1), a first bolt (3) is arranged on the periphery of the rear cover (2), the first bolt (3) is connected with the shell (1) through threads, an air outlet hole (18) is formed in the right side of the shell (1), a front cover (4) is arranged on the right side of the air outlet hole (18), a second bolt (5) is arranged on the periphery of the front cover (4), the second bolt (5) is connected with the shell (1) through threads, an air inlet hole (6) is formed in the middle of the front cover (4), the air inlet hole (6) penetrates through the front cover (4) to be communicated with the inside of the shell (1), a plurality of spring hooks (20) are arranged on one side, close to the shell (1), the spring hooks (20) are connected with springs (7), one ends, far away from the spring hooks, one side of the piston (8) far away from the spring (7) is hinged with a first transmission rod (9), one end of the first transmission rod (9) far away from the piston (8) is hinged with a second transmission rod (10), one end of the second transmission rod (10) far away from the first transmission rod (9) is fixedly connected with a rotating shaft (11), a clamping block (12) is fixedly arranged at the left side of the piston (8) at the inner side of the shell (1), a sliding strip (13) is fixedly connected with the piston (8) at the inner side of the left shell (1) of the piston (8), a rack is arranged at one side of the sliding strip (13), a gear (14) is arranged below the rack, the gear (14) is coaxially and fixedly connected with a rotating shaft (19), a dial (17) is fixedly arranged at the outer side of the shell (1) of the rotating shaft (19), a square flange is arranged at one end of the rotating shaft (19) far away from the gear (14), a circular dial (17) is coaxially arranged outside the housing (1) through a shaft.

2. A compact hand-operated device for a pneumatic actuator according to claim 1, wherein the contact surfaces of the housing (1) and the rear cover (2) and the front cover (4) are provided with sealing rings, and holes for threads to pass through are arranged on the sealing rings.

3. A compact hand-operated device for a pneumatic actuator according to claim 1, characterised in that the cartridge (12) is located in the extreme position at the left end of the piston (8).

4. A compact manual device for a pneumatic actuator according to claim 1, characterized in that the outside of the dial (17) is provided with a scale of the angle of rotation on the housing (1).

5. A compact hand-operated device for a pneumatic actuator according to claim 1, characterised in that the second transmission rod (10) is at an angle of 45 degrees to the horizontal centre axis of the housing (1) when the piston (8) is in the extreme position.

6. A compact manual device for a pneumatic actuator according to claim 1, wherein the end of the rotational axis of the hand wheel (15) is provided with a groove for matching with the flange of the rotational shaft (19), and the hand wheel (15) is provided with a foldable grip (16).