CN217272263U

CN217272263U - Pneumatic actuator for driving valve

Info

Publication number: CN217272263U
Application number: CN202221313612.2U
Authority: CN
Inventors: 王颜军; 屈海虹
Original assignee: Yangzhou Kiddness Environmental Protection Equipment Co ltd
Current assignee: Yangzhou Kiddness Environmental Protection Equipment Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-23
Anticipated expiration: 2032-05-30

Abstract

The utility model discloses a pneumatic actuator for driving a valve, which comprises a lower air cavity and an upper air cavity, wherein the upper part of the upper air cavity is connected with a buffer cavity through a first connecting pipe, the inside of the buffer cavity is provided with a blocking ring, and the blocking ring is provided with a plurality of air vents; the air bag is installed between the lower air cavity and the upper air cavity, the bottom of the lower air cavity is communicated with a second connecting pipe, a shaft rod is connected inside the second connecting pipe in a penetrating mode, the top end of the shaft rod is connected with an attaching plate, a spring is installed inside the lower air cavity, the top end of the spring is connected with a supporting plate, and the supporting plate and the spring are connected to the shaft rod in a sleeved mode. The utility model discloses be equipped with in the inside of cushion chamber and separate disconnected ring to a plurality of air vents have been seted up on cutting off the ring, make the air current slowly flow, can not cause the impact, and the inside of air cavity is equipped with spring and backup pad down, supports attaching plate, prevents that atmospheric pressure is too big, advantages such as air cavity under the collision damage.

Description

Pneumatic actuator for driving valve

Technical Field

The utility model relates to a pneumatic actuator technical field specifically is a pneumatic actuator for driving valve.

Background

The pneumatic actuator is an actuating device for opening and closing or regulating a valve by air pressure, is also called a pneumatic actuating mechanism or a pneumatic device, but is generally called a pneumatic head.

However, when the existing pneumatic actuator is used, the existing pneumatic actuator generally directly transmits air, so that air pressure fluctuation is large, air bags are easily damaged, and the adhering plate is not treated, so that the adhering plate is easily contacted and collided with a lower air cavity when being contacted and pressurized with the air bags, and the problems of damage and the like of the lower air cavity can be caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic actuator for driving valve is equipped with at the inside of cushion chamber and separates the ring to a plurality of air vents have been seted up on separating the ring, make the air current when inputing and discharging, can slowly flow, can not cause the impact, and the inside of air cavity is equipped with spring and backup pad down, realize supporting attaching plate, prevent that atmospheric pressure is too big, collision damage down the problem that advantages such as air cavity put forward in order to solve above-mentioned background art.

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

a pneumatic actuator for driving a valve comprises a lower air cavity and an upper air cavity, wherein the upper part of the upper air cavity is connected with a buffer cavity through a first connecting pipe, a partition ring is arranged inside the buffer cavity, and a plurality of vent holes are formed in the partition ring;

the air bag is fixedly installed between the lower air cavity and the upper air cavity, the bottom of the lower air cavity is fixedly communicated with a second connecting pipe, a shaft rod is connected inside the second connecting pipe in a penetrating mode, an attaching plate is fixedly connected to the top end of the shaft rod, a spring is fixedly installed inside the lower air cavity, a supporting plate is connected to the top end of the spring, and the supporting plate and the spring are connected to the shaft rod in a sleeved mode.

Preferably, the inner wall of the buffer cavity is fixedly provided with a sealing ring, and the buffer cavity and the sealing ring are connected with an input pipe and an output pipe in a penetrating manner.

Preferably, a support ring is fixedly mounted on the upper portion of the upper air cavity, the top end of the support ring is connected with the bottom of the buffer cavity, and the support ring is sleeved on the outer side of the first connecting pipe.

Preferably, a first connecting edge is fixedly installed on the lower air cavity, a second connecting edge is fixedly installed on the upper air cavity, the first connecting edge and the second connecting edge are fixedly connected through a fixing bolt, and the edge of the air bag is located among the lower air cavity, the upper air cavity, the first connecting edge and the second connecting edge.

Preferably, the upper part of the attaching plate is adhered with a rubber sheet, and the attaching plate and the rubber sheet are attached and connected with the air bag.

Preferably, the bottom end of the shaft lever is provided with an inner hexagonal screw hole, and the shaft lever is connected with the driving valve shaft in a clamping manner through the inner hexagonal screw hole.

Preferably, the upper part of the buffer cavity is connected with a cavity cover through a countersunk bolt.

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

1. the utility model is provided with the buffer cavity on the upper part of the upper air cavity, the isolating ring is arranged inside the buffer cavity, and the isolating ring is provided with a plurality of vent holes, so that the impact of gas can be reduced when the input pipe and the output pipe carry out gas transmission and exhaust, the safety of the air bag is kept, and the air bag is prevented from being damaged under the fluctuation of air pressure;

2. the utility model discloses the inside of air cavity is equipped with spring and backup pad under to spring and backup pad cup joint on the axostylus axostyle, realize supporting attaching plate, prevent under the impact of atmospheric pressure, cause attaching plate and the collision of air cavity down, cause the damage of air cavity down.

Drawings

Fig. 1 is a schematic top view of the present invention;

fig. 2 is a schematic bottom view of the present invention;

fig. 3 is a schematic bottom view of the internal structure of the present invention;

fig. 4 is a schematic top view of the internal structure of the present invention.

In the figure: 1. a lower air cavity; 2. an upper air cavity; 3. a first connecting pipe; 4. a buffer chamber; 5. a seal ring; 6. A blocking ring; 7. a vent hole; 8. an input tube; 9. an output pipe; 10. a chamber cover; 11. a support ring; 12. An air bag; 13. a rubber sheet; 14. attaching a plate; 15. a support plate; 16. a spring; 17. a second connecting pipe; 18. a shaft lever; 19. an inner hexagonal screw hole; 20. a first connecting edge; 21. a second connecting edge; 22. fixing the bolt; 23. a countersunk head bolt.

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, the present invention provides a technical solution:

a pneumatic actuator for driving a valve comprises a lower air cavity 1 and an upper air cavity 2, wherein the upper part of the upper air cavity 2 is connected with a buffer cavity 4 through a first connecting pipe 3, a partition ring 6 is arranged inside the buffer cavity 4, and a plurality of vent holes 7 are formed in the partition ring 6;

an air bag 12 is fixedly installed between the lower air cavity 1 and the upper air cavity 2, the bottom of the lower air cavity 1 is fixedly communicated with a second connecting pipe 17, a shaft rod 18 is connected inside the second connecting pipe 17 in a penetrating manner, an attaching plate 14 is fixedly connected to the top end of the shaft rod 18, a spring 16 is fixedly installed inside the lower air cavity 1, a supporting plate 15 is connected to the top end of the spring 16, and the supporting plate 15 and the spring 16 are sleeved on the shaft rod 18.

Preferably, fixed mounting has sealing ring 5 on the inner wall of cushion chamber 4, cushion chamber 4 with run through connection has input tube 8 and output tube 9 on the sealing ring 5, and the setting of sealing ring 5 prevents that atmospheric pressure from leaking, and the setting of input tube 8 and output tube 9 can be realized carrying out input and output to atmospheric pressure.

Preferably, a support ring 11 is fixedly installed on the upper portion of the upper air cavity 2, the top end of the support ring 11 is connected with the bottom of the buffer cavity 4, the support ring 11 is sleeved on the outer side of the first connection pipe 3, and the support ring 11 is set to maintain the stability of the upper air cavity 2 and the safety of the first connection pipe 3.

Preferably, a first connecting edge 20 is fixedly installed on the lower air cavity 1, a second connecting edge 21 is fixedly installed on the upper air cavity 2, the first connecting edge 20 and the second connecting edge 21 are fixedly connected through a fixing bolt 22, the edge of the airbag 12 is located among the lower air cavity 1, the upper air cavity 2, the first connecting edge 20 and the second connecting edge 21, the upper air cavity 2 and the lower air cavity 1 can be hermetically connected through the setting of the first connecting edge 20 and the second connecting edge 21, the fixing bolt 22 keeps the connection tightness, and the airbag 12 is fixedly installed.

Preferably, a rubber sheet 13 is adhered to the upper portion of the attachment plate 14, the attachment plate 14 and the rubber sheet 13 are attached to the airbag 12, and the rubber sheet 13 is set to prevent the attachment plate 14 from contacting the airbag 12 and damaging the airbag 12, thereby improving the safety of the airbag 12.

Preferably, the bottom end of the shaft lever 18 is provided with an inner hexagonal screw hole 19, the shaft lever 18 is connected with the driving valve shaft in a clamping manner through the inner hexagonal screw hole 19, and the valve is conveniently connected by setting the inner hexagonal screw hole 19, so that the transmission operation is realized.

Preferably, the upper part of the buffer chamber 4 is connected with a chamber cover 10 through a countersunk head bolt 23, the chamber cover 10 is set to enable the buffer chamber 4 to form a sealed chamber, and the countersunk head bolt 23 maintains the connection strength.

The working principle is as follows: when using, realize carrying out input and output to gas through input tube 8 and output tube 9, and when gas entered into the inside of cushion chamber 4, under the effect of cutting off ring 6, can not directly enter into the inside of lower air cavity 1 and last air cavity 2, but lead to the slow entering of air vent 7, then extrusion gasbag 12 warp, gasbag 12 promotes rubber piece 13 and attaching plate 14 this moment, make axostylus axostyle 18 can realize moving, the realization is adjusted the valve, and be equipped with spring 16 and backup pad 15 in the inside of air cavity 1 down, can realize supporting attaching plate 14, prevent under the effect of atmospheric pressure, air cavity 1 under attaching plate 14 strikes, cause the damage of air cavity 1 down.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A pneumatic actuator for driving a valve, comprising a lower air chamber (1) and an upper air chamber (2), characterized in that: the upper part of the upper air cavity (2) is connected with a buffer cavity (4) through a first connecting pipe (3), a partition ring (6) is arranged inside the buffer cavity (4), and a plurality of vent holes (7) are formed in the partition ring (6);

air chamber (1) with fixed mounting has gasbag (12) between last air chamber (2) down, the fixed intercommunication in bottom of air chamber (1) has second connecting pipe (17) down, the inside through connection of second connecting pipe (17) has axostylus axostyle (18), the top fixedly connected with laminating board (14) of axostylus axostyle (18), the inside fixed mounting of air chamber (1) has spring (16) down, the top of spring (16) is connected with backup pad (15), backup pad (15) with spring (16) cup joint on axostylus axostyle (18).

2. A pneumatic actuator for actuating a valve according to claim 1, wherein: fixed mounting has sealing ring (5) on the inner wall of cushion chamber (4), cushion chamber (4) with run through on sealing ring (5) and be connected with input tube (8) and output tube (9).

3. A pneumatic actuator for actuating a valve according to claim 1, wherein: the upper portion of the upper air cavity (2) is fixedly provided with a support ring (11), the top end of the support ring (11) is connected with the bottom of the buffer cavity (4), and the support ring (11) is sleeved on the outer side of the first connecting pipe (3).

4. A pneumatic actuator for driving a valve according to claim 1, wherein: the air bag structure is characterized in that a first connecting edge (20) is fixedly mounted on the lower air cavity (1), a second connecting edge (21) is fixedly mounted on the upper air cavity (2), the first connecting edge (20) and the second connecting edge (21) are fixedly connected through a fixing bolt (22), and the edge of the air bag (12) is located among the lower air cavity (1), the upper air cavity (2), the first connecting edge (20) and the second connecting edge (21).

5. A pneumatic actuator for actuating a valve according to claim 1, wherein: the upper portion of attaching plate (14) bonds has rubber piece (13), attaching plate (14) with rubber piece (13) with gasbag (12) laminating is connected.

6. A pneumatic actuator for driving a valve according to claim 1, wherein: the bottom end of the shaft lever (18) is provided with an inner hexagonal screw hole (19), and the shaft lever (18) is clamped and connected with the driving valve shaft through the inner hexagonal screw hole (19).

7. A pneumatic actuator for actuating a valve according to claim 1, wherein: the upper part of the buffer cavity (4) is connected with a cavity cover (10) through a countersunk head bolt (23).