CN215763569U

CN215763569U - Automatic switching device for air source of pneumatic door

Info

Publication number: CN215763569U
Application number: CN202122045601.2U
Authority: CN
Inventors: 刘技超; 任志兴; 王慧腾; 赵海峰
Original assignee: Hebei Yuzhou Energy Comprehensive Development Co ltd
Current assignee: Hebei Yuzhou Energy Comprehensive Development Co ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-02-08
Anticipated expiration: 2031-08-27

Abstract

The utility model relates to an automatic switching device for a pneumatic door air source. Compressed air in the prior art needs to be used as an air source of a pneumatic door after being adjusted in pressure by a filtering and reducing valve, and the pneumatic door in practical work directly influences the normal operation of equipment after the air source is lost due to damage of the filtering and reducing valve. The utility model comprises the following components: female pipe of compressed air (1), female pipe of compressed air is respectively through pipeline and instrument valve A (7), instrument valve B (8) are connected, instrument valve A passes through the pipeline and is connected with filtration relief pressure valve B (6), filtration relief pressure valve B passes through the pipeline respectively with the A interface of mechanical valve (4), the one end of miniature cylinder (2) is connected, the miniature cylinder other end is connected with the mechanical valve, the B interface of mechanical valve passes through the pipeline and is connected with filtration relief pressure valve A (5), the P interface of mechanical valve passes through the pipeline and is connected with pneumatic door (3), it is connected with instrument valve B through the pipeline to filter relief pressure valve A. The automatic switching device is used for the air source automatic switching device of the pneumatic door.

Description

Automatic switching device for air source of pneumatic door

Technical Field

The utility model relates to the technical field of air source supply of pneumatic doors, in particular to an automatic air source switching device for a pneumatic door.

Background

The pneumatic valve usually utilizes compressed air as a power source to push the air cylinder to act so as to enable the valve to act, the compressed air is required to be used as an air source of the pneumatic valve after the pressure of the compressed air is adjusted by a filtering and reducing valve, the method is a commonly used method at present, the method is commonly used in an environment which has little influence on the operation of a system after the valve acts, and is economic, but some pneumatic valves exist in actual work, and the normal operation of equipment is directly influenced after the air source is lost due to the damage of the filtering and reducing valve.

Disclosure of Invention

The utility model aims to provide an automatic switching device for a pneumatic valve air source, which can realize automatic switching to an air source of a B path when an air source of the A path is damaged, and ensure the running reliability of equipment.

The above purpose is realized by the following technical scheme:

the utility model provides a pneumatic door air supply automatic switching control equipment which constitutes and includes: the female pipe of compressed air, the female pipe of compressed air be connected with instrument valve A, instrument valve B through the pipeline respectively, instrument valve A pass through the pipeline and be connected with filtration relief pressure valve B, filtration relief pressure valve B pass through the pipeline and be connected with the A interface of mechanical valve, the one end of miniature cylinder respectively, the miniature cylinder other end with the mechanical valve connect, the B interface of mechanical valve pass through the pipeline and be connected with filtration relief pressure valve A, the P interface of mechanical valve pass through the pipeline and be connected with pneumatic door, filtration relief pressure valve A pass through the pipeline with instrument valve B connect.

The pneumatic valve air source automatic switching device is characterized in that the mechanical valve is a two-position three-way mechanical valve, the compressed air main pipe and the pipeline are made of stainless steel pipes, and the joints of the instrument valve A and the instrument valve B and the pipeline are stainless steel three-way joints.

Has the advantages that:

1. the utility model relates to an automatic switching device for a pneumatic valve air source, which aims at the defect that compressed air in the prior art is used as an air source of a pneumatic valve after pressure is adjusted by only one filtering and reducing valve, and normal operation of equipment is influenced after the air source is lost due to damage of the filtering and reducing valve, 2 paths of air sources are provided for the pneumatic valve, 1 filtering and reducing valve is arranged on each path of air source, the 2 paths of air sources are respectively connected with an A, B interface of a mechanical valve, three general micro cylinders for controlling single action are additionally arranged in an air source pipeline between the filtering and reducing valve of the A path of air source and the mechanical valve, and the action of the micro cylinders controls the mechanical valve so as to realize switching of the 2 paths of air sources, so that damage of the 1 path of filtering and reducing valve is realized, the other path is communicated, and normal operation of the equipment is effectively ensured.

2. The utility model realizes the automatic switching of 2 paths of air sources, provides a reliable air source for the pneumatic valve and improves the reliability of the valve action.

3. The structure of the utility model thoroughly solves the problem that the air source of the pneumatic valve is lost due to the damage of the filtering pressure reducing valve, opens up a brand new scientific and economic way for improving the reliability of the air source of the pneumatic valve, and has simple structure and reliable operation.

4. The compressed air main pipe, the air source pipeline and the joints of the compressed air main pipe and the air source pipeline are all made of stainless steel, so that the compressed air main pipe and the air source pipeline have better corrosion resistance, and the service life of equipment is prolonged.

Description of the drawings:

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

Wherein: 1. the device comprises a compressed air main pipe, 2, a micro air cylinder, 3, a pneumatic valve, 4, a mechanical valve, 5, filtering and reducing valves A and 6, filtering and reducing valves B and 7, instrument valves A and 8 and an instrument valve B.

The specific implementation mode is as follows:

example 1:

the utility model provides a pneumatic door air supply automatic switching control equipment which constitutes and includes: female pipe of compressed air 1, female pipe of compressed air be connected with instrument valve A7, instrument valve B8 through the pipeline respectively, instrument valve A pass through the pipeline and be connected with filtration relief pressure valve B6, filtration relief pressure valve B pass through the pipeline and be connected with the A interface of mechanical valve 4, the one end of miniature cylinder 2 respectively, the miniature cylinder other end with the mechanical valve connect, the B interface of mechanical valve pass through the pipeline and be connected with filtration relief pressure valve A5, the P interface of mechanical valve pass through the pipeline and be connected with pneumatic valve 3, filtration relief pressure valve A pass through the pipeline with instrument valve B connect.

Example 2:

according to the automatic switching device of the pneumatic valve air source in the embodiment 1, the mechanical valve is a two-position three-way mechanical valve, the compressed air main pipe and the pipeline are made of stainless steel pipes, and joints of the instrument valve A, the instrument valve B and the pipeline are stainless steel three-way joints.

The 2-path air source is respectively taken from a compressed air main pipe, an air source pipeline is made of stainless steel pipes, A, B-path air sources are respectively provided with an instrument valve and a filtering pressure reducing valve, then the 2-path air source is respectively connected with a A, B port of a two-position three-way mechanical valve, and a P port of the two-position three-way mechanical valve is connected with a pneumatic valve cylinder;

then, a tee joint is additionally arranged on an air source pipeline between the A-path filtering pressure reducing valve and the mechanical valve, a micro air cylinder is added, the action of the micro air cylinder can push a valve core of the mechanical valve to act to realize the switching of A, B paths of air sources, under the general condition, A, B paths of air sources are normal, at the moment, the micro air cylinder acts to push the mechanical valve to act, a A, P port of the mechanical valve is communicated, and the A-path air source supplies air; when the A path of filtering pressure reducing valve is damaged to cause the loss of the A path of air source, the micro air cylinder is reset under the action of the spring force and does not push the valve core of the mechanical valve any more, at the moment, the B, P port of the mechanical valve is communicated, and the B path of air source supplies air;

the main points of attention are:

1. the whole device selects high-quality materials to ensure the reliability of the device, and the materials comprise: stainless steel pipe, pipe joint, stainless steel tee joint, instrument valve, filtering pressure reducing valve, mechanical valve, micro cylinder and the like.

2. The device realizes the design scheme that the air source of the path A is automatically switched to the path B when damaged, and whether the air source of the path B is in a normal state or not needs to be checked in daily equipment maintenance so as to ensure the reliability of the equipment.

Claims

1. The utility model provides a pneumatic door air supply automatic switching control equipment which constitutes and includes: the main pipe of compressed air, characterized by: the utility model discloses a pneumatic valve of compressed air, including compressed air main pipe, instrument valve A, instrument valve B, pipeline and filter relief pressure valve B, the female pipe of compressed air be connected with instrument valve A, instrument valve B through the pipeline respectively, instrument valve A pass through the pipeline and be connected with filter relief pressure valve B, filter relief pressure valve B pass through the pipeline and be connected with the A interface of mechanical valve, the one end of miniature cylinder respectively, the miniature cylinder other end with the mechanical valve connect, the B interface of mechanical valve pass through the pipeline and be connected with filter relief pressure valve A, the P interface of mechanical valve pass through the pipeline and be connected with pneumatic door, filter relief pressure valve A pass through the pipeline with instrument valve B connect.

2. The automatic switching device of air source for pneumatic door as claimed in claim 1, wherein: the mechanical valve is a two-position three-way mechanical valve, the compressed air main pipe and the pipeline are all made of stainless steel pipes, and the instrument valve A and the instrument valve B are connected with the pipeline through stainless steel three-way joints.