CN210716215U

CN210716215U - Pneumatic valve

Info

Publication number: CN210716215U
Application number: CN201921088488.2U
Authority: CN
Inventors: 张维国; 雷晓光
Original assignee: Shanghai Yasheng Electronic Technology Co Ltd
Current assignee: Shanghai Yasheng Electronic Technology Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-06-09
Anticipated expiration: 2029-07-10

Abstract

The utility model provides a pneumatic valve, including valve body, piston, case, be equipped with the cavity in the valve body, the top of valve body is equipped with the air inlet, and the bottom of valve body is equipped with the inlet, is equipped with the liquid outlet on the lateral wall of valve body lower extreme, and piston and case all are located the cavity, and the upper end and the cooperation of pegging graft of piston of case, inlet are equipped with sealed hole with the intercommunication position of cavity, and the lower extreme of case is equipped with the sealing washer, and the sealing washer forms sealedly with the cooperation of sealed hole butt, still is equipped with the stop collar in the cavity, and the stop collar. The utility model aims at providing a simple structure's pneumatic valve.

Description

Pneumatic valve

Technical Field

The utility model relates to the technical field of valves, specifically a pneumatic valve.

Background

The pneumatic valve is a conveying device which leads gas or liquid into a valve body and achieves opening, closing and reversing through a channel arranged on the valve body. However, the existing pneumatic valve is too complex in design, multiple in component parts, high in failure rate, high in maintenance cost and increased in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

To the problem pointed out in the background art, the utility model provides a simple structure's pneumatic valve.

The technical scheme of the utility model is realized like this:

the utility model provides a pneumatic valve, includes valve body, piston, case, its characterized in that: the improved valve is characterized in that a cavity is arranged in the valve body, an air inlet is formed in the top end of the valve body, a liquid inlet is formed in the bottom end of the valve body, a liquid outlet is formed in the side wall of the lower end of the valve body, the air inlet, the liquid inlet and the liquid outlet are communicated with the cavity, the piston and the valve core are located in the cavity, the upper end of the valve core is in plug-in fit with the piston, a sealing hole is formed in the communicating position of the liquid inlet and the cavity, the lower end of the valve core is in butt fit with the sealing hole, a limiting sleeve is further arranged in the cavity, and.

The utility model discloses further set up to: and a sealing ring is arranged at the lower end of the valve core.

The utility model discloses further set up to: and a spring is arranged between the piston and the limiting sleeve.

The utility model discloses further set up to: and a gasket is arranged between the lower end of the limiting sleeve and the valve body.

The utility model discloses further set up to: and O-shaped rings are arranged on the inner side surface and the outer side surface of the limiting sleeve.

To sum up, the beneficial effects of the utility model are that: the utility model provides a pneumatic valve has simple structure, characteristics that the cost of manufacture is low, the maintenance of the accessory of also being convenient for simultaneously is changed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention.

Reference numerals: 1. a valve body; 101. a cavity; 102. an air inlet; 103. a liquid inlet; 104. a liquid outlet; 105. sealing the hole; 2. a piston; 3. a valve core; 4. a seal ring; 5. a limiting sleeve; 6. a spring; 7. a gasket; 8. and an O-shaped ring.

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 efforts belong to the protection scope of the present invention.

The present invention is explained below with reference to fig. 1:

a pneumatic valve comprises a valve body 1, a piston 2 and a valve core 3, wherein a cavity 101 is arranged in the valve body 1, an air inlet 102 is arranged at the top end of the valve body 1, a liquid inlet 103 is arranged at the bottom end of the valve body 1, a liquid outlet 104 and an air inlet 102 are arranged on the side wall of the lower end of the valve body 1, inlet 103, liquid outlet 104 all communicates the setting with cavity 101, piston 2 and case 3 all are located cavity 101, the upper end and the cooperation of pegging graft of piston 2 of case 3, inlet 103 is equipped with sealed hole 105 with the intercommunication position of cavity 101, the lower extreme of case 3 is equipped with sealing washer 4, it is sealed that formation is after sealing washer 4 and the cooperation of sealed hole 105 butt, still be equipped with stop collar 5 in cavity 101, stop collar 5 is fixed in cavity 101 and cup joints the middle part at case 3, be equipped with spring 6 between piston 2 and the stop collar 5, be equipped with gasket 7 between the lower extreme of stop collar 5 and the valve body 1, the inside and outside side of stop collar 5 all is equipped with O type circle 8.

By adopting the structure, high-pressure gas enters the cavity 101 from the gas inlet 102, pushes the piston 2 to move downwards until the bottom of the piston 2 is abutted against the limiting sleeve 5, and at the moment, the sealing ring 4 is abutted against and matched with the sealing hole 105 and is sealed by elastic deformation of the sealing ring 4 to prevent liquid from entering the cavity 101. When the valve is required to be opened and the air pressure is removed, the valve core 3 and the piston 2 move upwards under the action of the elastic force of the spring 6, and liquid flows into the cavity 101 from the liquid inlet 103 and flows out from the liquid outlet 104.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a pneumatic valve, includes valve body (1), piston (2), case (3), its characterized in that: a cavity (101) is arranged in the valve body (1), an air inlet (102) is arranged at the top end of the valve body (1), a liquid inlet (103) is arranged at the bottom end of the valve body (1), a liquid outlet (104) is arranged on the side wall of the lower end of the valve body (1), the air inlet (102), the liquid inlet (103) and the liquid outlet (104) are communicated with the cavity (101), the piston (2) and the valve core (3) are both positioned in the cavity (101), the upper end of the valve core (3) is in inserted fit with the piston (2), a sealing hole (105) is arranged at the communication part of the liquid inlet (103) and the cavity (101), the lower end of the valve core (3) is in butt fit with the sealing hole (105), a limiting sleeve (5) is further arranged in the cavity (101), the limiting sleeve (5) is sleeved in the middle of the valve core (3).

2. A pneumatic valve as set forth in claim 1, further characterized by: and a sealing ring (4) is arranged at the lower end of the valve core (3).

3. A pneumatic valve as set forth in claim 1, further characterized by: and a spring (6) is arranged between the piston (2) and the limiting sleeve (5).

4. A pneumatic valve as set forth in claim 1, further characterized by: and a gasket (7) is arranged between the lower end of the limiting sleeve (5) and the valve body (1).

5. A pneumatic valve as set forth in claim 1, further characterized by: and O-shaped rings (8) are arranged on the inner side surface and the outer side surface of the limiting sleeve (5).