CN218992437U

CN218992437U - Bidirectional sealing device of pneumatic circulating valve

Info

Publication number: CN218992437U
Application number: CN202223583261.XU
Authority: CN
Inventors: 胡国先; 余承善
Original assignee: Jiangsu Datian Valve Manufacturing Co ltd
Current assignee: Jiangsu Datian Valve Manufacturing Co ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-09
Anticipated expiration: 2032-12-31

Abstract

The utility model discloses a bidirectional sealing device of a pneumatic circulating valve, which comprises a pipeline assembly, a valve body assembly and a sealing assembly, wherein the pipeline assembly comprises a drain pipe, a water inlet pipe arranged at the bottom of the drain pipe and a cavity symmetrically arranged on the inner wall of the drain pipe, the valve body assembly comprises a pneumatic plug movably arranged in the drain pipe, the sealing assembly comprises a telescopic shaft arranged on one side of the cavity, a semi-ring pad arranged on one side of the telescopic shaft, a sealing pad arranged on one side of the semi-ring pad and a fastening spring arranged on one side of the cavity, the sealing performance of the device is further improved, normal use of the device is ensured, the sealing pad is made of polyurethane rubber, and the device has the advantages of high hardness, good strength, high elasticity, high wear resistance, tear resistance, aging resistance and the like, and the service life is also greatly improved.

Description

Bidirectional sealing device of pneumatic circulating valve

Technical Field

The utility model relates to the technical field of pneumatic circulating valves, in particular to a bidirectional sealing device of a pneumatic circulating valve.

Background

The pneumatic circulating valve adopts air pressure to push the piston to move left and right, so that the valve is opened or closed, and in order to ensure the tightness between the piston and a pipeline in the moving process, most of the existing pneumatic circulating valves are provided with a bidirectional sealing device for sealing between the piston and the pipeline wall, and the bidirectional sealing device is usually a sealing gasket. However, in the long-term use process, the piston can generate friction with the sealing gasket when moving back, and the sealing gasket can generate abrasion for a long time, so that the tightness of the device is greatly reduced, the normal use of the device is influenced, and a plurality of inconveniences are caused for a user.

Disclosure of Invention

The utility model aims to provide a bidirectional sealing device of a pneumatic circulating valve, which is used for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a pneumatic circulation valve two-way sealing device, includes pipeline subassembly, valve body subassembly and sealing component, pipeline subassembly includes the drain pipe, installs the inlet tube in the drain pipe bottom and the cavity of arranging at the drain pipe inner wall in the symmetry, valve body subassembly includes movable mounting at the inside pneumatic stopper of drain pipe, sealing component is including installing the telescopic shaft that is close to one side each other at the cavity, installing the semi-ring pad that is close to one side each other at the telescopic shaft, install the sealing washer that is close to one side each other at the semi-ring pad and install the fastening spring that is close to one side each other at the cavity.

Preferably, the sealing gasket is slightly larger than the semi-ring gasket, one side of the sealing gasket is in contact with the outer side of the pneumatic plug, the fastening spring is located on the outer side of the telescopic shaft, and one side, close to each other, of the fastening spring is connected with one side, far away from each other, of the semi-ring gasket.

Preferably, the two sides of the drain pipe are provided with first flange pieces, and the bottom of the water inlet pipe is provided with second flange pieces.

Preferably, the bottom of the drain pipe is provided with a through hole in a penetrating way, and the through hole is positioned right above the water inlet pipe.

Preferably, the inner wall of the drain pipe is symmetrically provided with annular grooves, the annular grooves are positioned between the cavities, a gray seal ring is arranged in each annular groove, and the inner sides of the gray seal rings are in contact with the outer sides of the pneumatic plugs.

Preferably, the inside of pneumatic stopper has seted up the fluid chamber, the top symmetry of drain pipe is installed the support, the bottom top of drain pipe is installed the air pump.

Preferably, the top of drain pipe is installed first trachea, the second trachea is installed at the top of drain pipe, the second trachea is located first tracheal one side, first trachea and second trachea are all connected with the air pump.

By adopting the technical scheme, the beneficial effects obtained by the utility model are as follows:

the sealing device is provided with the semi-ring gasket, the sealing gasket and the fastening spring, even if the sealing gasket is worn to a certain extent due to friction of the sealing gasket by the pneumatic plug in the reciprocating adjustment process of the pneumatic plug, the fastening spring arranged in the cavity is in a compressed state, and has elastic force towards two sides, the elastic force can pull the telescopic shaft to press the semi-ring gasket, so that the sealing gasket can be always tightly attached to the outer side of the pneumatic plug to form good sealing, the symmetrically arranged semi-ring gasket just can form a ring, the pneumatic plug is sleeved in the ring, and the sealing gasket is slightly larger than the semi-ring gasket, so that when the semi-ring gaskets are spliced together, the connecting end of the sealing gasket can be tightly pressurized under the elastic force of the fastening spring, thereby ensuring the sealing property of a connecting surface, further improving the sealing property of the device, ensuring the normal use of the device, providing great convenience for users, and the sealing gasket is made of polyurethane rubber.

Drawings

Fig. 1 is a schematic perspective view of the whole device of the present utility model.

FIG. 2 is a schematic cross-sectional view of a valve body assembly according to the present utility model.

FIG. 3 is a schematic cross-sectional view of a seal assembly of the present utility model.

Fig. 4 is a perspective view of the gasket of the present utility model.

In the figure: 100. a conduit assembly; 101. a drain pipe; 102. a water inlet pipe; 103. a first flange piece; 104. a second flange piece; 105. a through hole; 106. a cavity; 107. a ring groove; 108. a gray seal ring;

200. a valve body assembly; 201. a pneumatic plug; 202. a fluid chamber; 203. a bracket; 204. an air pump; 205. a first air tube; 206. a second air pipe;

300. a seal assembly; 301. a telescopic shaft; 302. a half ring pad; 303. a sealing gasket; 304. and fastening the spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a pneumatic circulation valve bi-directional sealing device;

comprises a semi-ring pad 302, a sealing pad 303 and a fastening spring 304, wherein the bottom of the drain pipe 101 is provided with a water inlet pipe 102, the inner wall of the drain pipe 101 is symmetrically provided with a cavity 106, both sides of the drain pipe 101 are provided with a first flange piece 103, the bottom of the water inlet pipe 102 is provided with a second flange piece 104, the bottom of the drain pipe 101 is provided with a through hole 105 in a penetrating way, the through hole 105 is positioned right above the water inlet pipe 102, the inner wall of the drain pipe 101 is symmetrically provided with a ring groove 107, the ring groove 107 is positioned between the cavities 106, the inside of the ring groove 107 is provided with a Griley seal 108, the inner side of the Griley seal 108 is contacted with the outer side of a pneumatic plug 201, the inside of the drain pipe 101 is movably provided with the pneumatic plug 201, the inside of the pneumatic plug 201 is provided with a fluid cavity 202, the top of the drain pipe 101 is symmetrically provided with a bracket 203, the air pump 204 is installed at the bottom top of drain pipe 101, first trachea 205 is installed at the top of drain pipe 101, second trachea 206 is located one side of first trachea 205, first trachea 205 and second trachea 206 are all connected with air pump 204, telescopic shaft 301 is installed to one side that cavity 106 is close to each other, semi-ring pad 302 is installed to one side that telescopic shaft 301 is close to each other, sealing gasket 303 is installed to one side that semi-ring pad 302 is close to each other, sealing gasket 303 is slightly greater than semi-ring pad 302, one side of sealing gasket 303 contacts each other with the outside of pneumatic plug 201, fastening spring 304 is installed to one side that cavity 106 is close to each other, fastening spring 304 is located the outside of telescopic shaft 301, one side that fastening spring 304 is close to each other is connected with one side that semi-ring pad 302 is kept away from each other.

Specifically, when the device is used, the drain pipe 101 and the water inlet pipe 102 are the main structure of the device and are used for providing mounting positions for other structures, the stability of the device is ensured, when the device is regulated, the air pump 204 is started, when the air pump 204 pushes the pneumatic plug 201 through the first air pipe 205, the right side pipeline is communicated, liquid flows to the right side, when the air pump 204 pushes the pneumatic plug 201 through the second air pipe 206, the left side pipeline is communicated, liquid flows to the left side, when the pneumatic plug 201 is in the middle position, the left and right channels are closed, the drain pipe 101 is externally connected with other pipelines through the first flange piece 103, the water inlet pipe 102 is externally connected with other pipelines through the second flange piece 104, the through hole 105 is used for being communicated with the water inlet pipe 102 and is used for flowing liquid, the formed annular groove 107 is used for mounting the Griley seal 108, the Griley seal 108 is formed by combining a rubber O-shaped ring and a polytetrafluoroethylene ring, the pneumatic plug 201 is sealed between the pipe wall and the pipe wall through the pneumatic plug 201, the fluid cavity 202 formed in the pneumatic plug 201 is used for being communicated with the two ends in a staggered mode, smooth liquid flow is ensured, the bracket 203 is used for installing the air pump 204, stability of the air pump 204 in operation is ensured, even if the pneumatic plug 201 rubs the sealing pad 303 to cause a certain degree of abrasion of the sealing pad 303 in the process of reciprocating adjustment of the pneumatic plug 201, the fastening spring 304 arranged in the cavity 106 is in a compressed state, an elastic force exists on two sides of the sealing pad 303, the elastic force can pull the telescopic shaft 301 to squeeze the semi-ring pad 302, therefore, the sealing pad 303 can be always ensured to be clung to the outer side of the pneumatic plug 201 to form a good seal, the symmetrically installed semi-ring pad 302 just can form a circular ring, the pneumatic plug 201 is sleeved in the circular ring, because the sealing gasket 303 is slightly larger than the semi-ring gasket 302, when the semi-ring gasket 302 is spliced together, under the action of the elastic force of the fastening spring 304, the connecting end of the sealing gasket 303 can generate tight pressurization, so that the sealing property of a connecting surface is ensured, the sealing property of the device is further improved, the normal use of the device is ensured, great convenience is provided for a user, the sealing gasket 303 is made of polyurethane rubber, and the sealing gasket has the advantages of high hardness, high strength, high elasticity, high wear resistance, tear resistance, ageing resistance and the like, and the service life of the device is also greatly prolonged.

Working principle: when the air pump 204 is started during adjustment, when the air pump 204 pushes the pneumatic plug 201 through the first air pipe 205, the right side pipeline is communicated, liquid flows to the right side, when the air pump 204 pushes the pneumatic plug 201 through the second air pipe 206, the left side pipeline is communicated, liquid flows to the left side, when the pneumatic plug 201 is in the middle position, the left and right channels are closed, even if the pneumatic plug 201 rubs the sealing pad 303 to cause a certain degree of abrasion on the sealing pad 303 during the reciprocating adjustment of the pneumatic plug 201, due to the fact that the fastening spring 304 installed in the cavity 106 is in a compressed state, an elastic force exists on two sides of the fastening spring, the elastic force pulls the telescopic shaft 301 to press the semi-ring pad 302, and therefore the sealing pad 303 can be always guaranteed to be clung to the outer side of the pneumatic plug 201, and good sealing can be formed.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A pneumatic circulation valve bi-directional seal device, comprising:

the pipeline assembly (100) comprises a drain pipe (101), a water inlet pipe (102) arranged at the bottom of the drain pipe (101) and a cavity (106) symmetrically arranged on the inner wall of the drain pipe (101);

a valve body assembly (200) comprising a pneumatic plug (201) movably mounted inside the drain pipe (101);

the sealing assembly (300) comprises a telescopic shaft (301) arranged on one side of the cavity (106) close to each other, a semi-ring pad (302) arranged on one side of the telescopic shaft (301) close to each other, a sealing pad (303) arranged on one side of the semi-ring pad (302) close to each other and a fastening spring (304) arranged on one side of the cavity (106) close to each other.

2. The bidirectional sealing device of the pneumatic circulation valve according to claim 1, wherein the sealing gasket (303) is slightly larger than the semi-ring gasket (302), one side of the sealing gasket (303) is in contact with the outer side of the pneumatic plug (201), the fastening spring (304) is located on the outer side of the telescopic shaft (301), and one side, close to each other, of the fastening spring (304) is connected with one side, far away from each other, of the semi-ring gasket (302).

3. A pneumatic circulation valve bi-directional sealing device according to claim 1, characterized in that the two sides of the drain pipe (101) are provided with a first flange (103) and the bottom of the inlet pipe (102) is provided with a second flange (104).

4. The pneumatic circulation valve bidirectional sealing device according to claim 1, wherein a through hole (105) is formed in the bottom of the drain pipe (101) in a penetrating manner, and the through hole (105) is located right above the water inlet pipe (102).

5. The bidirectional sealing device of the pneumatic circulation valve according to claim 1, wherein annular grooves (107) are symmetrically formed in the inner wall of the drain pipe (101), the annular grooves (107) are located between the cavities (106), a gray sealing ring (108) is installed in the annular grooves (107), and the inner sides of the gray sealing ring (108) are in contact with the outer sides of the pneumatic plugs (201).

6. The bidirectional sealing device of the pneumatic circulation valve according to claim 1, wherein a fluid chamber (202) is formed in the pneumatic plug (201), a bracket (203) is symmetrically arranged at the top of the drain pipe (101), and an air pump (204) is arranged at the top of the bottom of the drain pipe (101).

7. The pneumatic circulation valve bidirectional sealing device according to claim 1, wherein a first air pipe (205) is installed at the top of the drain pipe (101), a second air pipe (206) is installed at the top of the drain pipe (101), the second air pipe (206) is located at one side of the first air pipe (205), and the first air pipe (205) and the second air pipe (206) are connected with an air pump (204).