CN218954152U

CN218954152U - Pneumatic swing valve with anti-blocking function

Info

Publication number: CN218954152U
Application number: CN202320006960.3U
Authority: CN
Inventors: 浦湘凯; 裴旺; 何义斌; 王彬; 田勇; 郑美玲; 卫平福; 王俊
Original assignee: Ctiec Environmental Protection Research Institute Jiangsu Co ltd
Current assignee: Ctiec Environmental Protection Research Institute Jiangsu Co ltd
Priority date: 2023-01-04
Filing date: 2023-01-04
Publication date: 2023-05-02
Anticipated expiration: 2033-01-04

Abstract

The utility model discloses a pneumatic swing valve with an anti-blocking function, which comprises a valve body and a cylinder connected to the top of the valve body, wherein a valve cavity is arranged in the valve body, a small hole communicated with the valve cavity is formed in the side wall of the valve body, an air inlet opening interface and an air inlet closing interface are arranged on the cylinder, and the air inlet opening interface is communicated with the small hole through an air pipe. According to the utility model, the valve cavity can be purged through compressed air, so that the flowability of fine powder is improved, the fine powder is prevented from adhering to the valve cavity, and the valve is prevented from being blocked.

Description

Pneumatic swing valve with anti-blocking function

Technical Field

The utility model belongs to the technical field of pneumatic conveying, and particularly relates to a pneumatic swing valve with an anti-blocking function.

Background

At present, for the blocking condition of the pneumatic swing valve applied to a pneumatic conveying system, two main solutions are as follows: (1) And an overhaul small hole is reserved on the valve body, when the valve is blocked, the overhaul small hole is opened, fine powder viscous substances adhered to the inner wall of the valve cavity are cleaned and fall off through the slender stick, and then the valve body is knocked by an iron hammer, so that fine powder agglomerated on part dead angles is knocked off. Although the method is low in cost, the method can cause certain damage to the valve once blockage cleaning occurs. When the iron rod is used for cleaning the adhesion matters on the inner wall, the valve cavity is scratched, the ravines are more easily adhered in the future, and when the valve body is knocked, the protection paint on the outer wall of the valve is easily damaged, so that rust is caused, and even the valve is knocked and cracked; (2) The sealing valve seat is provided with the powder-proof sealing cover outside, the powder-proof gasket is arranged on the inner side of the powder-proof sealing cover, and the medium powder can not be added into the valve cavity due to the powder-proof sealing cover in the rotating process of the sealing valve seat, so that the occurrence of the conditions of blocking or blocking of the valve and the like is avoided. Although the method can effectively prevent fine powder from entering the valve cavity and preventing the fine powder from adhering to the inner wall, the sealing valve seat and the powder-proof sealing cover are in excessively tight fit, and the valve can lead to ageing of the sealing gasket after the valve is opened and closed for a long time, so that the fine powder enters the valve cavity and further leads to blockage of the valve. When the valve is applied in a high-temperature environment, the gasket cannot work for a long time and cannot adapt to complex application scenes; the method has certain requirements on the machining precision of the sealing valve seat and the powder-proof sealing cover, and has higher cost. In view of this, it is necessary to study a pneumatic swing valve having an anti-blocking function.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model aims to provide the pneumatic swing valve with the anti-blocking function, which can purge the valve cavity through compressed air, improve the flowability of fine powder and prevent the fine powder from adhering to the valve cavity, thereby avoiding the valve from being blocked.

In order to achieve the above object, the present utility model adopts the following technical scheme:

a pneumatic swing valve with an anti-blocking function comprises a valve body and a cylinder connected to the top of the valve body, wherein a valve cavity is formed in the valve body, a small hole communicated with the valve cavity is formed in the side wall of the valve body, an air inlet opening interface and an air inlet closing interface are formed in the cylinder, and the air inlet opening interface is communicated with the small hole through an air pipe.

Preferably, the three-way valve is installed at the air inlet opening interface, and comprises a threaded interface, a first quick-plugging interface and a second quick-plugging interface, wherein the threaded interface is connected with the air inlet opening interface of the air cylinder.

Preferably, the first quick-connection interface is connected with an instrument gas for controlling the opening and closing of the cylinder through a first gas pipe.

Preferably, a quick connector is mounted outside the small hole, and the second quick connector is connected with the quick connector through a second air pipe so as to send compressed air into the valve cavity.

Preferably, the air inlet closing interface is connected with instrument air for controlling the opening and closing of the cylinder through a third air pipe.

The utility model has the advantages that:

(1) When the valve is opened, the air inlet opening port always allows compressed air to enter, so that the valve is kept open; similarly, when the valve is closed, the air inlet closing port always allows compressed air to enter, so that the valve is kept closed; a part of compressed air is led out from the air inlet opening port by using a tee joint and is connected into the small holes at the side edge of the valve body, so that the compressed air can purge the valve cavity, the flowability of fine powder is improved, the fine powder is prevented from adhering to the valve cavity, and the valve is prevented from being blocked;

(2) The utility model has the advantages of simple processing, adaptability to complex use scenes, no abrasion problem between parts and long service life of the valve, and no parts and sealing elements are added in the valve cavity.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a perspective view of the present utility model.

Meaning of reference numerals in the drawings: 1. valve body, 1.1, aperture, 2, cylinder, 2.1, inlet opening interface, 2.2, inlet closing interface, 3, instrument gas, 4, first gas pipe, 5, second gas pipe, 6, third gas pipe.

Detailed Description

The utility model is described in detail below with reference to the drawings and the specific embodiments.

Referring to fig. 1 and 2, a pneumatic swing valve with anti-blocking function comprises a valve body 1 and a cylinder 2 connected to the top of the valve body 1, wherein a valve cavity is arranged in the valve body 1, a small hole 1.1 communicated with the valve cavity is formed in the side wall of the valve body, an air inlet opening interface 2.1 and an air inlet closing interface 2.2 are arranged on the cylinder 2, and the air inlet opening interface 2.1 is communicated with the small hole 1.1 through an air pipe.

The three-way valve is arranged at the air inlet opening interface 2.1 and comprises a threaded interface, a first quick-plugging interface and a second quick-plugging interface, and the threaded interface is connected with the air inlet opening interface 2.1 of the air cylinder 2. The first quick-connection interface is connected with the instrument gas 3 for controlling the opening and closing of the cylinder 2 through a first gas pipe 4, and the air inlet closing interface 2.2 is connected with the instrument gas 3 for controlling the opening and closing of the cylinder 2 through a third gas pipe 6. The air inlet opening interface 2.1 is used for opening the interface when the instrument air 3 is pressurized into the air cylinder 2; the interface is closed when the cylinder 2 discharges the compressed air therein. The intake air shut-off port 2.2 is the other way around. When the valve is opened, the air inlet opening interface 2.1 always allows compressed air to enter, so that the valve is kept open; similarly, when the valve is closed, the inlet air shut-off port 2.2 will always have compressed air in, keeping the valve closed.

The quick connector is installed in the outside of aperture 1.1, and the quick connector is connected through second trachea 5 to the second quick connector to send compressed air into the valve pocket, make the valve pocket can be blown to compressed air, prevent fine powder adhesion valve pocket. When the valve is opened and closed once, after the fine powder passes through the valve, part of the fine powder is adhered in the valve cavity, and when the valve is kept in an opened or closed state, the compressed air always sweeps the valve cavity, so that the fine powder is cleaned.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the utility model in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the utility model.

Claims

1. The utility model provides a pneumatic swing valve with prevent stifled function, includes valve body (1) and connects in cylinder (2) at valve body (1) top, its characterized in that, the inside of valve body (1) is provided with the valve pocket, has seted up aperture (1.1) that are linked together with the valve pocket on its lateral wall, be provided with on cylinder (2) and admit air opening interface (2.1) and admit air and close interface (2.2), admit air opening interface (2.1) and pass through trachea intercommunication aperture (1.1).

2. A pneumatic swing valve with anti-blocking function according to claim 1, wherein the air inlet opening port (2.1) is provided with a three-way valve, the three-way valve comprises a threaded port, a first quick-plug port and a second quick-plug port, and the threaded port is connected with the air inlet opening port (2.1) of the air cylinder (2).

3. The pneumatic swing valve with anti-blocking function according to claim 2, wherein the first quick-connect port is connected with an instrument gas (3) for controlling the opening and closing of the cylinder (2) through a first gas pipe (4).

4. A pneumatic swing valve with anti-blocking function according to claim 2, wherein a quick connector is mounted outside the small hole (1.1), and the second quick connector is connected to the quick connector by a second air pipe (5) to feed compressed air into the valve cavity.

5. The pneumatic swing valve with the anti-blocking function according to claim 1, wherein the air inlet shutoff port (2.2) is connected with an instrument air (3) for controlling the opening and closing of the air cylinder (2) through a third air pipe (6).