CN219366843U

CN219366843U - Valve core assembly of gas valve

Info

Publication number: CN219366843U
Application number: CN202320721662.2U
Authority: CN
Inventors: 赵奇元; 朱新炎; 毛益民; 汤冬冬
Original assignee: Zhejiang Deai Intelligent Control Technology Co ltd
Current assignee: Zhejiang Deai Intelligent Control Technology Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-07-18
Anticipated expiration: 2033-03-30

Abstract

The utility model discloses a valve core component of a gas valve, which belongs to the technical field of valves and comprises a valve core seat, wherein a gas buffer area is arranged on the side wall of the valve core seat, a permanent magnet is fixed at the upper end of the valve core seat, and a sealing element is embedded at the lower end of the valve core seat. The valve core of the gas valve is provided with the gas buffer structure to avoid valve failure, in addition, the permanent magnet is externally provided with the detachable sleeve, the sleeve is provided with the magnetic adjusting port, the size of the magnetic adjusting port can be designed according to the opening pressure required by the use of the valve, and different sleeve parts are replaced to improve the control precision of the valve; meanwhile, the valve seat is internally provided with the metal insert, so that the connection strength between the valve seat and the permanent magnet is improved, the valve can be disassembled and assembled for multiple times, and the stability of the valve in use is improved.

Description

Valve core assembly of gas valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a valve core assembly of a gas valve.

Background

The fuel gas is a combustible gas widely used in the current industrial and agricultural production and civil fields, and the fuel gas is easy to cause serious safety accidents due to the characteristics of inflammability, explosiveness, toxicity and the like, so that the fuel gas entering the burner needs to be ensured to be kept at normal pressure and flow, and is stably and fully combusted. Normally, a gas self-closing valve is arranged in front of a kitchen range, and the valve is automatically closed to prevent gas leakage when overpressure, undervoltage and overcurrent occur.

The existing gas self-closing valve mainly adopts a magnetic attraction type, a permanent magnet is arranged on a valve core, the permanent magnet is attached to the end face of a valve rod, a gas buffer structure is not arranged on the existing valve core, gas is instantaneously flushed into a valve port to form high pressure, an elastic diaphragm is excessively flushed to drive the valve rod and the permanent magnet to be separated, the valve is invalid, and the stability is poor.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a valve core of a gas valve, and aims to solve the problem that the valve core is not provided with a gas buffer structure in the prior art, so that the valve is easy to fail.

In order to achieve the above purpose, the utility model provides a valve core assembly of a gas valve, which comprises a valve core seat, wherein a gas buffer area is arranged on the side wall of the valve core seat, a permanent magnet is fixed at the upper end of the valve core seat, and a sealing element is embedded at the lower end of the valve core seat.

Further, the area of the upper end surface of the valve core seat is larger than that of the lower end surface.

Furthermore, the permanent magnet is externally detachably provided with a sleeve, and a magnetic adjusting port is formed in the sleeve.

Furthermore, a metal insert is arranged in the valve core seat, threads are arranged on the inner wall of the metal insert, and the permanent magnet is connected with the metal insert through a screw.

Furthermore, grooves are uniformly distributed on the outer wall of the metal insert.

Further, the gas buffer zone is a conical inclined surface or a step surface or an arc surface.

Furthermore, the gas buffer areas are uniformly distributed on the periphery of the side wall of the valve core seat.

Further, the magnetic adjusting port is in a sector shape or a polygon shape.

Furthermore, a limiting groove for installing the sealing element is formed in the lower end of the valve core seat, and the depth of the limiting groove is smaller than the thickness of the sealing element.

Compared with the prior art, the valve core seat has the advantages that the side wall of the valve core seat is provided with the gas buffer zone, and gas is guided and buffered by the gas buffer zone after being introduced into the valve body and then acts on the elastic membrane, so that the valve is prevented from being invalid; in addition, a detachable sleeve is arranged outside the permanent magnet, a magnetic adjusting port is formed in the sleeve, the size of the magnetic adjusting port can be designed according to the opening pressure required by the use of the valve, different sleeves are replaced, and the control precision of the valve is improved; meanwhile, the valve seat is internally provided with the metal insert, so that the connection strength between the valve seat and the permanent magnet is improved, the valve can be disassembled and assembled for multiple times, and the stability of the valve in use is improved.

Drawings

FIG. 1 is a schematic installation view of a fuel gas valve cartridge assembly provided by the present utility model;

FIG. 2 is an exploded view of the components of the fuel gas valve cartridge assembly provided by the present utility model;

FIG. 3 is a schematic view of the structure of the valve core assembly of the gas valve provided by the utility model;

FIG. 4 is a schematic view of the valve core seat of the valve core assembly of the gas valve provided by the utility model;

FIG. 5 is a schematic structural view of a kit of the fuel gas valve cartridge assembly provided by the present utility model;

FIG. 6 is a cross-sectional view of the valve cartridge of example 1 provided by the present utility model;

FIG. 7 is a cross-sectional view of the valve cartridge of example 2 provided by the present utility model;

FIG. 8 is a cross-sectional view of another valve cartridge seat of example 2 provided by the present utility model;

FIG. 9 is a cross-sectional view of the valve cartridge of example 3 provided by the present utility model;

fig. 10 is a cross-sectional view of another valve core print of embodiment 3 provided by the present utility model.

The corresponding structure of each numerical mark in the attached drawings is as follows: 1-valve rod, 20-gas buffer zone, 21-valve core seat, 22-permanent magnet, 23-sealing piece, 24-external member, 241-magnetic regulating port, 25-metal insert, 251-groove.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model will be further described with reference to specific drawings and examples.

Example 1

Referring to fig. 1 to 6, the utility model provides a valve core assembly of a gas valve, which is connected with a valve rod 1 by adopting a magnetic attraction mode, referring to fig. 1, the lower end face of the valve rod 1 and the upper end face of the valve core assembly are attracted tightly by magnetic force, in particular, the valve core assembly comprises a valve core seat 21, a permanent magnet 22 is fixed at the upper end of the valve core seat 21, a sealing element 23 is embedded at the lower end of the valve core seat 21, the sealing element 23 is made of common rubber materials, a limit groove for installing the sealing element 23 is formed at the lower end of the valve core seat 21 for conveniently installing the sealing element, and the depth of the limit groove is smaller than the thickness of the sealing element 23; a gas buffer area 20 is provided on the side wall of the valve core seat 21.

As shown in fig. 1, a is a valve port, the magnetic force of the permanent magnet 22 to the valve port a is smaller than the magnetic force of the permanent magnet 22 to the valve rod 1, when the gas pressure at the valve port a is larger than the magnetic force of the permanent magnet 22 to the valve port a, the gas pushes the valve core assembly to move upwards integrally, the valve port a is opened, if the gas buffer area 20 is not arranged, the gas is instantaneously flushed from the valve port a to form high pressure, the elastic membrane acts on the elastic membrane vertically along the side wall of the valve core seat 21, the elastic membrane is excessively flushed to drive the valve rod 1 and the permanent magnet to be separated, and after the gas buffer area 20 is arranged on the side wall of the valve core seat 21, the gas buffer area 20 buffers and guides the gas.

Further, since the buffer effect is to be formed on the gas, the valve core seat needs to meet the condition that the area of the upper end surface of the valve core seat 21 is larger than the area of the lower end surface, that is, when the gas flows along the side wall of the valve core seat 21, the gas is blocked due to the different sizes of the upper end surface and the lower end surface of the valve core seat 21, and the flow path is changed to form buffer; further, the shape of the gas buffer area 20 can be adjusted according to the actual use situation, and the gas buffer area 20 is a conical inclined surface, a step surface, a cambered surface, or the like.

In this example, referring to fig. 2 to 4 and fig. 6, the gas buffer zones 20 are uniformly distributed on the circumference of the side wall of the valve core seat 21 and are tapered inclined surfaces.

Example 2

As shown in fig. 7 and 8, this embodiment is a further improvement on the basis of embodiment 1, and is specifically as follows:

the gas buffer areas 20 are stepped surfaces and are uniformly distributed on the circumference of the side wall of the valve core seat 21, and can be arranged into multiple layers of steps according to specific buffer effects, and further, as shown in fig. 8, the stepped surfaces can be mutually communicated.

Example 3

As shown in fig. 9 and 10, this embodiment is a further improvement on the basis of embodiment 1, and is specifically as follows:

for convenience of processing, the gas buffer zone 20 is directly configured as an inclined plane, and further, for improving the buffer effect, as shown in fig. 10, the gas buffer zone 20 is configured as an inclined plane, and a step is disposed above the inclined plane.

Referring to fig. 2 and 5, because the pressures in different pipelines are different, the opening pressure of the gas valve is also different, in order to facilitate the adjustment of the magnetic force of the permanent magnet 22 to the valve port, a sleeve 24 is detachably arranged outside the permanent magnet 22, a magnetic adjusting port 241 is formed in the sleeve 24, the size of the magnetic adjusting port 241 can be designed according to the opening pressure required by the use of the valve, and the sleeve with different sizes of the magnetic adjusting port is replaced, specifically, the larger the magnetic adjusting port 241, i.e. the more the magnetic surface of the permanent magnet 22 is exposed, the larger the magnetic force of the magnetic adjusting port to the valve port is, and the larger the required opening pressure is, otherwise, the smaller the magnetic adjusting port 241 is, so that the valve control precision can be improved; the magnetic adjustment opening is fan-shaped or polygonal, and can be adjusted according to the processing difficulty, and in this embodiment, the magnetic adjustment opening 241 is fan-shaped.

In the actual production process, the valve core seat 21 is a plastic part and is a fixed permanent magnet 22, an internal thread is generally arranged on the valve core seat 21, the valve core seat 21 and the permanent magnet 22 are directly connected through a screw, the whole valve core assembly 2 can vibrate when being opened and closed, the screw is easy to loose, the strength of the plastic part is limited, the screw is easy to break the internal thread on the valve core seat 21 after being disassembled and assembled for many times, and a sliding wire is caused, so that the connection strength of the valve core seat 21 and the permanent magnet is improved, the valve core seat 21 is internally provided with the metal insert 25, referring to fig. 4, the inner wall of the metal insert 25 is provided with a thread, the permanent magnet 22 is connected with the metal insert 25 through the screw, meanwhile, in order to improve the connection strength of the metal insert 25 and the valve core seat 21, grooves 251 are uniformly distributed on the outer wall of the metal insert 25, and in this embodiment, the metal insert 25 is made of copper or aluminum.

According to the valve core assembly of the gas valve, the side wall of the valve core seat is provided with the gas buffer zone, so that gas is guided and buffered by the gas buffer zone after being introduced into the valve body and then acts on the elastic membrane, and the valve is prevented from being invalid; in addition, a detachable sleeve is arranged outside the permanent magnet, a magnetic adjusting port is formed in the sleeve, the size of the magnetic adjusting port can be designed according to the opening pressure required by the use of the valve, different sleeves are replaced, and the control precision of the valve is improved; meanwhile, the valve seat is internally provided with the metal insert, so that the connection strength between the valve seat and the permanent magnet is improved, the valve can be disassembled and assembled for multiple times, and the stability of the valve in use is improved.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A gas valve core assembly, characterized in that: the valve core comprises a valve core seat (21), wherein a permanent magnet (22) is fixed at the upper end of the valve core seat (21), a sealing piece (23) is embedded at the lower end of the valve core seat (21), and a gas buffer zone (20) is arranged on the side wall of the valve core seat (21).

2. The gas valve cartridge assembly of claim 1, wherein: the area of the upper end surface of the valve core seat (21) is larger than that of the lower end surface.

3. The gas valve cartridge assembly of claim 1, wherein: the permanent magnet (22) is externally detachably provided with a sleeve (24), and a magnetic adjusting port (241) is formed in the sleeve (24).

4. The gas valve cartridge assembly of claim 1, wherein: the valve core seat (21) is internally provided with a metal insert (25), the inner wall of the metal insert (25) is provided with threads, and the permanent magnet (22) is connected with the metal insert (25) through screws.

5. The gas valve cartridge assembly of claim 4, wherein: grooves (251) are uniformly distributed on the outer wall of the metal insert (25).

6. The gas valve cartridge assembly of claim 1, wherein: the gas buffer zone (20) is a conical inclined surface or a step surface or an arc surface.

7. The gas valve cartridge assembly of claim 1, wherein: the gas buffer areas (20) are uniformly distributed on the periphery of the side wall of the valve core seat (21).

8. The gas valve cartridge assembly of claim 3, wherein: the magnetic adjusting port (241) is in a sector shape or a polygon shape.

9. The gas valve cartridge assembly of claim 1, wherein: the lower end of the valve core seat (21) is provided with a limiting groove for installing the sealing piece (23), and the depth of the limiting groove is smaller than the thickness of the sealing piece (23).