CN212718009U

CN212718009U - Pneumatic switch control valve

Info

Publication number: CN212718009U
Application number: CN202021504752.9U
Authority: CN
Inventors: 王怀莹
Original assignee: Tianjin Brebo Valve Technology Co ltd
Current assignee: Tianjin Brebo Valve Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-03-16
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a pneumatic switch control valve, including the valve body, the inside upper end activity of valve body alternates and is provided with the transfer line, the inboard middle part activity block of valve body is provided with the sealing plug, the fixed frame that is provided with in valve body upper end, the fixed sealed cavity that is provided with in the inboard middle part of fixed frame, the transfer line extends to inside the sealed cavity, the fixed first stopper that is provided with of the inside lower extreme of sealed cavity, the fixed second stopper that is provided with in the inboard middle part of sealed cavity, the fixed third stopper that is provided with in the inside upper end of sealed cavity, the inside activity block in first stopper upper end of sealed cavity is provided with first piston, first piston movable sleeve is established at transfer line outside surface, the transfer line surface is fixed in first piston upper end and is provided with the. The utility model discloses excellent in use effect can be convenient for half open the full-open through gas pocket control flap to can improve the result of use of device.

Description

Pneumatic switch control valve

Technical Field

The utility model relates to a pneumatic switch technical field specifically is a pneumatic switch control valve.

Background

The pneumatic control valve refers to various pneumatic elements which control the pressure, flow and flow direction of airflow in a pneumatic system and ensure the normal operation of a pneumatic actuator or mechanism. The structure of the pneumatic control valve can be decomposed into a valve body (including a valve seat, a valve hole and the like) and a valve core, and the valve body and the valve core are of a normally closed type and a normally open type according to the relative positions of the valve body and the valve core. The valves can be structurally divided into: stop type, sliding column type and sliding plate type valves.

The existing pneumatic control valve usually needs to push a piston or a film to move through high-pressure gas, but the valve cannot be accurately controlled to be half-opened or opened by one third according to the processing requirement in such a way, so that the use precision of the device is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic on-off control valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a pneumatic switch control valve comprises a valve body, wherein a transmission rod is movably inserted into the upper end inside the valve body, a sealing plug is movably clamped in the middle of the inner side of the valve body, a fixed frame is fixedly arranged at the upper end of the valve body, a sealed cavity is fixedly arranged in the middle of the inner side of the fixed frame, the transmission rod extends into the sealed cavity, a first limiting block is fixedly arranged at the lower end inside the sealed cavity, a second limiting block is fixedly arranged in the middle of the inner side of the sealed cavity, a third limiting block is fixedly arranged at the upper end inside the sealed cavity, a first piston is movably clamped at the upper end of the first limiting block inside the sealed cavity, the first piston is movably sleeved on the outer surface of the transmission rod, an extending block is fixedly arranged at the upper end of the first piston on the surface of the transmission rod, and a second piston is movably, the second piston is fixedly connected with the transmission rod, a first air inlet pipe is fixedly arranged at the lower end of the first piston on the surface of the sealing cavity, a second air inlet pipe is fixedly arranged at the lower end of the second piston on the surface of the sealing cavity, and a third air inlet pipe is fixedly arranged at the upper end of the second piston on the surface of the sealing cavity.

Preferably, the lower end in the valve body is provided with a sealing cover in a screwing mode through thread movement, and the sealing cover can be opened through threads to conveniently clean the inside of the valve body.

Preferably, both sides of the surface of the valve body are fixedly provided with connecting flanges, and the valve body can be conveniently connected with an external pipeline through the connecting flanges.

Preferably, sealing rings are fixedly arranged on two sides of the sealing plug inside the valve body, and the sealing effect of the device can be improved by matching the sealing rings with the sealing plug.

Preferably, the first air inlet pipe, the second air inlet pipe and one end of the third air inlet pipe are fixedly provided with interfaces, and the first air inlet pipe and the second air inlet pipe can be conveniently connected with a high-pressure air source externally through the interfaces.

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

1. the utility model discloses need control flap half-open, then can be through first intake pipe to the inside high-pressure air that injects into of sealed cavity, then can be with first piston jack-up, accessible extension piece drives the transfer line and shifts up during first piston jack-up promptly for first piston receives the second stopper spacing, so can accurately drive the piston and shift up and make the piston half-open.

2. The utility model discloses simple structure need not complicated automatically controlled structure, and its cost is lower, and the maintenance is simple, convenient to use.

Drawings

Fig. 1 is a schematic view of the overall structure of a pneumatic switch control valve of the present invention;

fig. 2 is an internal structural view of a sealed cavity of a pneumatic switch control valve according to the present invention;

fig. 3 is an air inlet view of a first air inlet pipe of the pneumatic switch control valve of the present invention;

fig. 4 is an air inlet view of a second air inlet pipe of the pneumatic switch control valve of the present invention;

fig. 5 is an installation view of a transmission rod and an extension block of the pneumatic switch control valve of the present invention;

in the figure: 1. a valve body; 2. a transmission rod; 3. a sealing plug; 4. a fixed frame; 5. sealing the cavity; 6. a first stopper; 7. a second limiting block; 8. a third limiting block; 9. a first piston; 10. an extension block; 11. a second piston; 12. a first intake pipe; 13. a second intake pipe; 14. a third intake pipe; 15. a sealing cover; 16. a connecting flange; 17. a seal ring; 18. an interface.

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. 1-5, the present invention provides a technical solution: a pneumatic switch control valve comprises a valve body 1, wherein a transmission rod 2 is movably inserted and arranged at the upper end inside the valve body 1, a sealing plug 3 is movably clamped and arranged at the middle part inside the valve body 1, a fixed frame 4 is fixedly arranged at the upper end of the valve body 1, a sealed cavity 5 is fixedly arranged at the middle part inside the fixed frame 4, the transmission rod 2 extends into the sealed cavity 5, a first limiting block 6 is fixedly arranged at the lower end inside the sealed cavity 5, a second limiting block 7 is fixedly arranged at the middle part inside the sealed cavity 5, a third limiting block 8 is fixedly arranged at the upper end inside the sealed cavity 5, a first piston 9 is movably clamped and arranged at the upper end of the first limiting block 6 inside the sealed cavity 5, the first piston 9 is movably sleeved on the outer side surface of the transmission rod 2, and an extending block 10 is fixedly arranged at the upper end of the first piston 9, inside the sealed cavity 5, the movable block of the upper end of the second limiting block 7 is provided with a second piston 11, the second piston 11 is fixedly connected with the transmission rod 2, the surface of the sealed cavity 5 is fixedly provided with a first air inlet pipe 12 at the lower end of the first piston 9, the surface of the sealed cavity 5 is fixedly provided with a second air inlet pipe 13 at the lower end of the second piston 11, and the surface of the sealed cavity 5 is fixedly provided with a third air inlet pipe 14 at the upper end of the second piston 11.

The utility model discloses a valve body, including valve body 1, sealing cover 15, sealing ring 17, sealing effect, first intake pipe 12, second intake pipe 13 and third intake pipe 14 one end are all fixed and are provided with interface 18, can conveniently be provided with first intake pipe 12 and the external high pressurized air source of second intake pipe 13 through interface 18, can conveniently be with the external high pressurized air source of first intake pipe 12 and second intake pipe 13 through the screw thread activity closure 15 of closing in 1 inside the valve body of valve is cleared up to open sealing cover 15 through the screw thread, 1 surperficial both sides of valve body are all fixed and are provided with flange 16, can conveniently be with the external pipeline of valve body 1 in sealing plug 3 both sides through

flange

16, 1 inside of valve body.

The working principle is as follows: when the device is used, the device can be externally connected with a pipeline through a connecting flange 16, when the device is externally connected, the right side of the device shown in figure 1 is a water inlet, the left side of the device is a water outlet, then when the sealing plug 3 needs to be opened, if the valve needs to be controlled to be half-opened, high-pressure air can be injected into the sealed cavity 5 through a first air inlet pipe 12, the first piston 9 can be jacked up, when the first piston 9 is jacked up, the transmission rod 2 can be driven to move upwards to the position shown in figure 3 through an extension block 10, so that the first piston 9 is limited by a second limiting block 7, so that the piston can be accurately driven to move upwards to enable the piston to be half-opened, when the piston needs to be driven to be fully opened, high-pressure air only needs to be introduced into the sealed cavity 5 through a second air inlet pipe 13, then the second piston 11 can be driven to move upwards, so, so can accurately drive the piston and shift up and make the piston open entirely, and when transfer line 2 shifts up this moment because first piston 9 is the movable sleeve establish 2 outside surfaces of transfer line then can not influence transfer line 2 and shift up, and when valve body 1 was closed to needs, only need through third intake pipe 14 to sealed cavity 5 inside let in high-pressure gas can, this is exactly the utility model relates to a pneumatic switch control valve's theory of operation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 switch control valve, includes valve body (1), its characterized in that: the upper end inside the valve body (1) is movably inserted with a transmission rod (2), the middle part inside the valve body (1) is movably clamped with a sealing plug (3), the upper end of the valve body (1) is fixedly provided with a fixed frame (4), the middle part inside the fixed frame (4) is fixedly provided with a sealed cavity (5), the transmission rod (2) extends into the sealed cavity (5), the lower end inside the sealed cavity (5) is fixedly provided with a first limiting block (6), the middle part inside the sealed cavity (5) is fixedly provided with a second limiting block (7), the upper end inside the sealed cavity (5) is fixedly provided with a third limiting block (8), the inside of the sealed cavity (5) is movably clamped with a first piston (9) at the upper end of the first limiting block (6), and the first piston (9) is movably sleeved on the outer side surface of the transmission rod (2), the utility model discloses a sealed air inlet pipe, including transfer line (2), sealed cavity (5), second stopper (7), fixed connection between second piston (11) and transfer line (2), transfer line (2) surface is fixed in first piston (9) upper end and is provided with extension piece (10), sealed cavity (5) inside is provided with second piston (11) in second stopper (7) upper end activity block, sealed cavity (5) surface is fixed at first piston (9) lower extreme and is provided with first intake pipe (12), sealed cavity (5) surface is fixed at second piston (11) lower extreme and is provided with second intake pipe (13), sealed cavity (5) surface is fixed in second piston (11) upper end and is provided with third intake pipe (14).

2. A pneumatic on-off control valve as set forth in claim 1 wherein: the lower end in the valve body (1) is movably screwed with a sealing cover (15) through threads.

3. A pneumatic on-off control valve as set forth in claim 1 wherein: and connecting flanges (16) are fixedly arranged on two sides of the surface of the valve body (1).

4. A pneumatic on-off control valve as set forth in claim 1 wherein: and sealing rings (17) are fixedly arranged on two sides of the sealing plug (3) in the valve body (1).

5. A pneumatic on-off control valve as set forth in claim 1 wherein: and one ends of the first air inlet pipe (12), the second air inlet pipe (13) and the third air inlet pipe (14) are fixedly provided with interfaces (18).