CN215522115U

CN215522115U - Pneumatic valve capable of realizing automatic opening and closing by sensing gas pressure change

Info

Publication number: CN215522115U
Application number: CN202120412555.2U
Authority: CN
Inventors: 卓耿兴
Original assignee: Zhuo Gengxing
Current assignee: Zhuo Gengxing
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2022-01-14
Anticipated expiration: 2031-02-24

Abstract

The utility model discloses a pneumatic valve capable of realizing automatic opening and closing by sensing gas pressure change, which structurally comprises a valve body, a valve cover, a valve core, an inner sleeve nut, a piston, an adjusting spring, a plurality of sealing rings and the like, wherein the valve body is internally composed of an air inlet cavity, an air exhaust cavity and a piston cavity.

Description

Pneumatic valve capable of realizing automatic opening and closing by sensing gas pressure change

Technical Field

The utility model relates to the field of pneumatic transmission, and particularly provides a valve capable of automatically opening and closing by sensing gas pressure change.

Background

The utility model provides a valve of automatic start-stop is realized through perception gas pressure change, can open automatically when strength pipeline pressure grow, self-closing after strength pipeline pressure resumes normally, can be used to prevent that strength pipeline pressure is too big, plays the effect of pressure release. The valve can also be used as auxiliary equipment of a pneumatic conveying system, when the pneumatic conveying pipeline is blocked, the valve is opened to supplement pneumatic power to the conveying pipeline, when the pipeline is unblocked, the pressure returns to normal, and the valve is closed. The valve is opened and closed by sensing the pressure change of the conveying pipeline, so that smooth pipeline conveying is realized, the aim of preventing blockage is fulfilled, and the economical efficiency and the reliability of the operation of the pneumatic conveying system are improved.

SUMMERY OF THE UTILITY MODEL

The technical problems to be solved by the utility model are as follows: 1. the valve capable of sensing the change of gas pressure to realize automatic opening and closing is provided, and can prevent overlarge pressure of a pneumatic pipeline and play a role in pressure relief. 2. The auxiliary valve of the pneumatic conveying system is opened and closed automatically, when a pneumatic conveying pipeline is blocked, the valve is opened to supplement pneumatic power to the pipeline, and when the pneumatic conveying pipeline is unblocked, the valve is closed, so that the gas consumption is saved.

The utility model is realized in this way, a pneumatic valve which realizes automatic opening and closing by sensing gas pressure change, the pneumatic valve comprises a valve rod, an adjusting spring, an inner sleeve nut, an air inlet cavity, a valve core, a valve body, a first sealing ring, a piston, a diaphragm, a valve cover, an inlet hole, a piston cavity, a bolt, a second sealing ring, an exhaust port, an exhaust cavity and a third sealing ring, the valve body is internally provided with three cavities of the air inlet cavity, the exhaust cavity and the piston cavity, the left end of the valve body is connected with the inner sleeve nut through screw threads, the inner sleeve nut is connected with the valve core through the adjusting spring, the valve core is connected with the left end of the valve rod through screw threads, the piston in the piston cavity is connected with the left end of the valve rod through screw threads, the center of the valve rod is provided with a hole channel which enables the air inlet cavity to be communicated with the piston cavity, the piston is in an elliptical shape, the area of the piston is larger than that of the valve core, and the second sealing ring is arranged on the piston, the valve comprises a valve body, a valve rod, a valve cover, a piston and a piston, wherein a first sealing ring is arranged at the interface of the left end of the valve rod and the valve body, the valve cover and the valve body are fixedly connected through a bolt, a diaphragm is arranged between the valve cover and the piston, the center of the diaphragm is provided with a hole, the center of the diaphragm is fixed on the center of the piston in a nut mode, a hole channel at the center of the left end of the valve rod penetrates through the center hole of the diaphragm, an air inlet hole is formed in the valve cover, and an air outlet is reserved in the piston cavity.

Furthermore, the valve rod is provided with a hole in the center so that the air inlet cavity is communicated with the piston cavity.

Furthermore, the piston is elliptical, and the area of the piston is larger than that of the valve core.

Advantageous effects

Compared with the prior art, the utility model has the following beneficial effects:

the valve adopting the structure can be directly installed on the pneumatic pipeline, when the pressure of the pneumatic pipeline is too high, the valve is opened, the gas of the pneumatic pipeline is discharged through the valve, the pressure relief effect is realized, and the side effect caused by the too high pressure of the pipeline is prevented. As the auxiliary equipment of the pneumatic conveying system, the equipment is arranged between a pneumatic conveying pipeline and an air source pipe, when the pneumatic conveying pipeline is blocked and the pressure is increased, a valve is automatically opened, the air of the air source pipe is input into the pneumatic conveying pipeline through the valve, the pneumatic conveying pipeline is assisted to be dredged, the pipeline is prevented from being blocked, the conveying efficiency is improved, and the conveying air consumption is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a valve that can be automatically opened and closed by sensing a change in gas pressure according to the present invention.

Fig. 2 is a schematic diagram of a valve core structure of the valve which can realize automatic opening and closing by sensing gas pressure change according to the utility model.

Fig. 3 is a schematic diagram of a piston structure of the valve which can automatically open and close by sensing the change of gas pressure according to the present invention.

In the figure: the valve comprises a valve rod-1, an adjusting spring-2, an inner sleeve nut-3, an air inlet cavity-4, a valve core-5, a valve body-6, a first sealing ring-7, a piston-8, a diaphragm-9, a valve cover-10, an inlet hole-11, a piston cavity-12, a bolt-13, a second sealing ring-14, an exhaust port-15, an exhaust cavity-16 and a third sealing ring-17.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Examples

As shown in fig. 1-3, the utility model provides a valve which can realize automatic opening and closing by sensing gas pressure change, the structure of the valve comprises a valve rod 1, an adjusting spring 2, an inner sleeve nut 3, an air inlet cavity 4, a valve core 5, a valve body 6, a first sealing ring 7, a piston 8, a diaphragm 9, a valve cover 10, an inlet hole 11, a piston cavity 12, a bolt 13, a second sealing ring 14, an exhaust port 15, an exhaust cavity 16 and a third sealing ring 17, three chambers of the air inlet cavity 4, the exhaust cavity 16 and the piston cavity 12 are arranged in the valve body 6, the left end of the valve body 6 is in threaded connection with the inner sleeve nut 3, the adjusting spring 2 is connected between the inner sleeve nut 3 and the valve core 5, the valve core 5 is in threaded connection with the left end of the valve rod 1, the piston 8 in the piston cavity 12 is in threaded connection with the left end of the valve rod 1, a pore 18 is arranged in the center of the valve rod 1 to enable the air inlet cavity 4 to be communicated with the piston cavity 12, the valve comprises a piston 8, a valve core 5, a valve rod 1, a valve cover 10, a valve body 6, a bolt 13, a diaphragm 9, a hole 18 and a piston cavity 12, wherein the piston 8 is in an elliptical shape, the area of the piston 8 is larger than that of the valve core 5, the second sealing ring 14 is arranged on the piston 8, the first sealing ring 7 is arranged at the interface of the left end of the valve rod 1 and the valve body 6, the valve cover 10 and the valve body 6 are fixedly connected through the bolt 13, the diaphragm 9 is arranged between the valve cover 10 and the piston 8, the center of the diaphragm 9 is provided with the hole, the center of the diaphragm 9 is fixed on the center of the piston 8 in a nut mode, the hole channel at the center of the left end of the valve rod 1 penetrates through the center hole of the diaphragm 9, the valve cover 10 is provided with an air inlet 11, the piston cavity is provided with an air outlet 15, the center of the valve rod 1 is provided with the hole 18 so that the air inlet cavity 4 is communicated with the piston cavity 12, the piston 8 is in an elliptical shape, and the area of the piston 8 is larger than that of the valve core 5.

The working principle of the present invention is explained as follows:

according to the utility model, the piston cavity 12 is connected with the air inlet cavity 4 through the pore channel in the valve rod 1, the air in the two cavities can flow freely, the pressure intensity of the two cavities is consistent, when the pressure of the air inlet cavity 4 is increased, the air flows into the piston cavity 12 through the central pore channel of the valve rod 1, the pressure intensity of the piston cavity 12 is increased, as the pressure receiving area of the piston 8 is larger than the pressure receiving area of the valve core 5, the pressure difference is generated between the piston 8 and the valve core 5, and when the pressure difference is larger than the pressure of the adjusting spring 2, the valve is opened. When the pressure of the air inlet cavity 4 is smaller than a certain value, the valve core 5 is pressed by the adjusting spring 2, and the valve is closed.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a pneumatic valve that realizes automatic start and stop through perception gas pressure change which characterized in that: the structure of the valve comprises a valve rod (1), an adjusting spring (2), an inner sleeve nut (3), an air inlet cavity (4), a valve core (5), a valve body (6), a first sealing ring (7), a piston (8), a diaphragm (9), a valve cover (10), an inlet hole (11), a piston cavity (12), a bolt (13), a second sealing ring (14), an exhaust port (15), an exhaust cavity (16) and a third sealing ring (17), wherein three cavities of the air inlet cavity (4), the exhaust cavity (16) and the piston cavity (12) are arranged inside the valve body (6), the left end of the valve body (6) is in threaded connection with the inner sleeve nut (3), the inner sleeve nut (3) is connected with the valve core (5) through the adjusting spring (2), the valve core (5) is in threaded connection with the left end of the valve rod (1), the piston (8) in the piston cavity (12) is in threaded connection with the left end of the valve rod (1), the valve rod (1) center has pore canal (18) to make air inlet chamber (4) and piston chamber (12) communicate with each other, the shape of piston (8) is the ellipse type, and the area of piston (8) is greater than the area of case (5), be equipped with second sealing washer (14) on piston (8), there is first sealing washer (7) valve rod (1) left end and valve body (6) kneck, valve gap (10) and valve body (6) pass through bolt (13) fixed connection, there is diaphragm (9) between valve gap (10) and piston (8), and the diaphragm (9) center is porose, and diaphragm (9) center is fixed on piston (8) center with the nut mode, and the pore canal at valve rod (1) left end center passes diaphragm (9) centre bore, has inlet hole (11) on valve gap (10), piston chamber (12) leaves gas vent (15).

2. The pneumatic valve capable of automatically opening and closing by sensing the change of the gas pressure as claimed in claim 1, wherein: the center of the valve rod (1) is provided with a pore canal (18) which leads the air inlet cavity (4) to be communicated with the piston cavity (12).

3. The pneumatic valve capable of automatically opening and closing by sensing the change of the gas pressure as claimed in claim 1, wherein: the piston (8) is elliptical, and the area of the piston (8) is larger than that of the valve core (5).