CN214578873U

CN214578873U - Piston type pulse valve

Info

Publication number: CN214578873U
Application number: CN202120350155.3U
Authority: CN
Inventors: 黄振禧; 刘冬强; 岳力
Original assignee: Jinan Sannuo Technology Co ltd
Current assignee: Jinan Sannuo Technology Co ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2021-11-02
Anticipated expiration: 2031-02-06

Abstract

The utility model discloses a piston type pulse valve, mainly relating to the technical field of pulse valve equipment, comprising a valve piece, a piston assembly capable of lifting is arranged in the valve piece, an air inlet cavity is arranged on the valve piece corresponding to the position of the piston assembly, a working cavity is arranged at the bottom of the valve piece, and the bottom of the piston assembly is sealed or communicated with the working cavity at a contact surface N; the valve piece is connected with the small valve cover through the valve cover, the valve cover and the small valve cover are sealed or communicated at the contact surface M through the upper diaphragm, the side surface of the valve cover is provided with the exhaust cavity, and when a large caliber and a large flow are needed, the stress condition is improved through the piston assembly, so that the whole service life of the pulse valve is greatly prolonged, and the economic benefit is improved.

Description

Piston type pulse valve

Technical Field

The utility model relates to a pulse valve equipment technical field specifically is a piston pulse valve.

Background

The electromagnetic pulse valve is a generator for generating pulse vibration airflow in bag-type dust collector to facilitate dust cleaning, and it and pulse blowing controller constitute the dust cleaning and blowing system of the dust collector.

At present, all the electromagnetic pulse valves used in China use a membrane as an important part for closing a valve, and the pulse valves stop blowing. The principle of the diaphragm type electromagnetic valve is that when the electromagnetic valve is electrified, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, and the valve is opened; when the power is cut off, the electromagnetic force disappears, the spring presses the closing part on the valve seat, and the valve is closed.

The diaphragm type pulse valve has the advantages that the diaphragm is limited in deformation, the diaphragm bears high-frequency pressure change and deformation motion generated by up-down opening and closing, and when a large caliber and a large flow are needed, the size of the pulse valve is large, so that the diaphragm is broken, air leaks, and the whole dust collector system fails.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies and drawbacks of the prior art, it is an object of the present invention to provide a piston pulse valve.

In order to solve the technical problem, the utility model discloses a following technical scheme: a piston pulse valve characterized by: the valve comprises a valve member, a liftable piston assembly is arranged in the valve member, an air inlet cavity is arranged on the valve member corresponding to the position of the piston assembly, a working cavity is arranged at the bottom of the valve member, and the bottom of the piston assembly is sealed or communicated with the working cavity at a contact surface N; the valve is connected with the small valve cover through the valve cover, the valve cover and the small valve cover are sealed or communicated at a contact surface M through an upper diaphragm, and an exhaust cavity is arranged on the side surface of the valve cover.

As a further improvement of the utility model, the air inlet cavity is communicated with the working cavity after the piston assembly rises.

As a further improvement of the utility model, the piston assembly is provided with a throttling hole which communicates with the upper and lower air cavities of the piston assembly.

As a further improvement of the utility model, the upper diaphragm is provided with a throttling hole which is communicated with the upper and lower air cavities of the upper diaphragm.

As a further improvement of the utility model, the matching part of the piston component and the valve piece is additionally provided with a Glare ring seal.

Compared with the prior art, the utility model discloses the beneficial effect who has does: when large-caliber large flow is needed, the stress condition is improved through the piston assembly, so that the whole service life of the pulse valve is greatly prolonged, and the economic benefit is improved.

Drawings

The invention will be further described with reference to the accompanying drawings and specific embodiments:

fig. 1 is a schematic structural diagram of a piston type pulse valve according to the present invention;

in the figure: 1 piston component, 2 valve parts, 3 valve covers, 4 upper diaphragms, 5 small valve covers, 6 control ports, 7 contact surfaces M, 8 contact surfaces N, 9 working cavities, 10 air inlet cavities and 11 air outlet cavities.

Detailed Description

In order to make the technical solution and the advantageous effects of the present invention more clear, the present invention will be further described in detail with reference to the following embodiments.

Referring to fig. 1, which is a schematic structural diagram of the present invention, the present invention includes a valve element 2, a piston assembly 1 capable of lifting and lowering is arranged in the valve element 2, an air inlet cavity 10 is arranged on the valve element 2 at a position corresponding to the piston assembly 1, a working cavity 9 is arranged at the bottom of the valve element 2, and the bottom of the piston assembly 1 and the working cavity 9 are sealed or communicated at a contact surface N8; the valve member 2 is connected with a small valve cover 5 through a valve cover 3, the valve cover 3 and the small valve cover 5 are sealed or communicated at a contact surface M7 through an upper diaphragm 4, and an exhaust cavity 11 is arranged on the side surface of the valve cover 3.

And the piston assembly 1 is provided with a throttling hole which is communicated with the upper air cavity and the lower air cavity of the piston assembly 1. The upper diaphragm 4 is provided with a throttling hole which is communicated with the upper air cavity and the lower air cavity of the upper diaphragm 4, and the matching part of the piston assembly (1) and the valve piece (2) is additionally sealed by a Glare ring.

The working principle is as follows:

in the initial state, the air inlet cavity 10 is connected with an air source, and the control port 6 is closed. The upper and lower cavities of the piston assembly 1 and the small diaphragm 4 are both provided with air pressure, and because the area difference is subjected to larger downward force, the contact surface N8 and the contact surface M7 are also sealed. The inlet chamber 10 is not in communication with the working chamber 9.

The control port 6 is opened to be communicated with the atmosphere, the air pressure of the upper cavity of the small diaphragm 4 is reduced, the contact surface M7 is opened, the upper cavity of the piston assembly 1 is communicated with the atmosphere through the exhaust cavity 11, the air pressure of the upper cavity of the piston assembly 1 is reduced, the contact surface N8 is opened, and the air inlet cavity 10 is communicated with the working cavity 9.

When the control port 6 is closed, the upper and lower cavities of the small diaphragm 4 are subjected to the same pressure, and due to the area difference, the whole small diaphragm 4 is moved downwards by the downward force, the contact surface M7 is sealed, similarly, the piston assembly 1 is also moved downwards to seal the contact surface N8, and the air inlet cavity 10 is disconnected from the working cavity 9.

It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only, not by way of limitation, since other embodiments will become apparent to those skilled in the art upon consideration of the following detailed description of the invention without any creative effort.

Claims

1. A piston pulse valve characterized by: the valve comprises a valve piece (2), a liftable piston assembly (1) is arranged in the valve piece (2), an air inlet cavity (10) is arranged on the valve piece (2) corresponding to the position of the piston assembly (1), a working cavity (9) is arranged at the bottom of the valve piece (2), and the bottom of the piston assembly (1) is sealed or communicated with the working cavity (9) at a contact surface N (8); the valve piece (2) is connected with the small valve cover (5) through the valve cover (3), the valve cover (3) and the small valve cover (5) are sealed or communicated at a contact surface M (7) through the upper membrane (4), and an exhaust cavity (11) is arranged on the side surface of the valve cover (3).

2. A piston pulse valve as in claim 1, wherein: after the piston assembly (1) rises, the air inlet cavity (10) is communicated with the working cavity (9).

3. A piston pulse valve as in claim 1, wherein: and the piston assembly (1) is provided with a throttling hole which is communicated with the upper air cavity and the lower air cavity of the piston assembly (1).

4. A piston pulse valve as in claim 1, wherein: and the upper diaphragm (4) is provided with a throttling hole which is communicated with the upper air cavity and the lower air cavity of the upper diaphragm (4).

5. A piston pulse valve as in claim 1, wherein: and a Gray ring seal is added at the matching part of the piston assembly (1) and the valve piece (2).