CN212868643U

CN212868643U - Anti-leakage valve core fixing and assembling structure in gas valve

Info

Publication number: CN212868643U
Application number: CN202021412725.9U
Authority: CN
Inventors: 乔木
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-04-02
Anticipated expiration: 2030-07-17

Abstract

The utility model belongs to the technical field of the gas application and specifically relates to a prevent leaking case fixed assembly structure in gas valve, including gas valve body, sealed rubber ring, sleeve pipe, swivel nut and case subassembly, wherein the air flue inner wall of gas valve body is equipped with spacing boss, and during the air flue of gas valve body was located to sleeve pipe and swivel nut, just spacing boss with be equipped with sealed rubber ring between the sleeve pipe, the swivel nut is located the sleeve pipe is kept away from spacing boss one side, swivel nut and gas valve body air flue inner wall threaded connection, just sleeve pipe and sealed rubber ring pass through the swivel nut top is tight, and the case subassembly is located in the sleeve pipe. The utility model discloses when guaranteeing that the gas valve can the automatic cutout gas, sealing performance also improves greatly, and the processing installation is all very convenient.

Description

Anti-leakage valve core fixing and assembling structure in gas valve

Technical Field

The utility model belongs to the technical field of the gas application and specifically relates to a leak-proof case fixed assembly structure in gas valve.

Background

The application of gas is closely related to the daily life of people, but the application of gas brings convenience to the life of people, and meanwhile, some potential safety hazards exist, such as gas accidents caused by gas pipeline leakage, rubber pipe aging and falling, and the like, property loss of light people and gas explosion of heavy people threaten life safety. Along with the development of science and technology, an over-flow cut-off protection device aiming at the problems appears in the prior art, and some devices realize automatic cut-off of fuel gas by utilizing a valve core structure, for example, a valve core structure is disclosed in the patent with the publication number of CN208295546U, the valve core structure comprises a valve core umbrella and a valve core shell, the valve core shell is arranged in an air passage in a valve body through a sealing sleeve with threads, the valve core umbrella is arranged in the valve body shell, when the fuel gas is normally ventilated, the valve core umbrella is positioned at the rear end, the fuel gas normally flows in through a gap on the valve core shell, and when the fuel gas is leaked at an over-flow rate, the valve core umbrella is rapidly moved forward and blocks a shell opening of the valve core shell due to. But discovery in actual production, because reasons such as machining precision lead to the case shell in the case subassembly and the gas valve body inside cooperation not inseparable enough easily, and then lead to sealed not good, the gas easily takes place to leak, and there are some gas valves's valve wall thinner in addition, and inside difficult processing thread is detained and can influence valve body self intensity, consequently hardly adopts above-mentioned sealed bayonet catch structure fixed case subassembly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent leaking case fixed assembly structure in gas valve when guaranteeing that the gas valve can the automatic cutout gas, sealing performance also improves greatly, and processing installation is all very convenient.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a prevent leaking case fixed assembly structure in gas valve, includes gas valve body, sealed rubber ring, sleeve pipe, swivel nut and case subassembly, and wherein the air flue inner wall of gas valve body is equipped with spacing boss, and sleeve pipe and swivel nut are located in the air flue of gas valve body, just spacing boss with be equipped with sealed rubber ring between the sleeve pipe, the swivel nut is located the sleeve pipe is kept away from spacing boss one side, swivel nut and gas valve body air flue inner wall threaded connection, just sleeve pipe and sealed rubber ring pass through the swivel nut top is tight, and the case subassembly is located in the sleeve pipe.

The front end of the sleeve is a reducing end, a circle of clamping grooves are formed in the outer side of the reducing end, and the sealing rubber ring is sleeved in the clamping grooves.

The valve core assembly comprises a valve core umbrella and a valve core shell, the valve core shell is arranged in the sleeve, and the valve core umbrella is movably arranged in the valve core shell.

The sleeve pipe front end is the undergauge end, just the inboard horizontal through-hole of undergauge end axial forms the blow vent, the inboard perpendicular inner wall of undergauge end forms spacing tang), case shell front end with spacing tang offsets, the blow vent passes through the case umbrella antedisplacement is stopped up.

The utility model discloses an advantage does with positive effect:

1. the utility model discloses utilize swivel nut and sleeve pipe to press closely to seal the rubber ring to guarantee that sleeve pipe front end and the inside good of gas valve body are sealed, prevent that the gas from leaking.

2. The utility model discloses utilize the outside to be the sleeve pipe of plain noodles and injectd case subassembly position, to the gas valve that some wall is thin like this, only need to process the screw-thread fit in air inlet department the swivel nut, this has reduced the processing degree of difficulty and has guaranteed valve body intensity.

Drawings

FIG. 1 is a schematic view of the present invention in a normal state,

FIG. 2 is a schematic view of the present invention in a state of automatic cut-off of gas,

fig. 3 is an exploded view of the present invention.

Wherein, 1 is the gas valve body, 2 is the sealing rubber ring, 3 is the sleeve pipe, 301 is the draw-in groove, 302 is spacing tang, 303 is the blow vent, 4 is the case umbrella, 5 is the swivel nut, 6 is spacing boss, 7 is the case shell.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, the utility model discloses a gas valve body 1, sealed rubber ring 2, sleeve pipe 3, swivel nut 5 and case subassembly, wherein the air flue inner wall of gas valve body 1 is equipped with spacing boss 6, and during the air flue of gas valve body 1 was located to sleeve pipe 3 and swivel nut 5, just spacing boss 6 with be equipped with sealed rubber ring 2 between the sleeve pipe 3, swivel nut 5 is located sleeve pipe 3 is kept away from spacing boss 6 one side,

swivel nut

5 and 1 air flue inner wall threaded connection of gas valve body, just sleeve pipe 3 and sealed rubber ring 2 pass through 5 tops of swivel nut are tight, and the case subassembly is located in the sleeve pipe 3. In this embodiment, the screw sleeve 5 is an inner hexagonal screw sleeve.

As shown in fig. 1, the front end of the sleeve 3 is a reduced diameter end, wherein a circle of clamping groove 301 is formed outside the reduced diameter end, a vent 303 is formed in an axial horizontal through hole inside the reduced diameter end, and a limit stop 302 is formed in a vertical inner wall inside the reduced diameter end. During installation, the sealing rubber ring 2 is sleeved in the clamping groove 301, after the gas valve body 1 is placed, under the pushing action of the threaded sleeve 5, the clamping groove 301 and the limiting boss 6 are matched to tightly press the sealing rubber ring 2, as shown in fig. 1-2, the valve core assembly comprises a valve core umbrella 4 and a valve core shell 7, the valve core shell 7 is arranged in the sleeve 3, the front end of the valve core umbrella 4 is abutted to the limiting spigot 302, the valve core umbrella 4 is movably arranged in the valve core shell 7, and when gas overflow leaks, airflow is instantly increased to enable the valve core umbrella 4 to rapidly move forwards and plug the vent 303, so that gas is automatically cut off. The valve core assembly is well known in the art.

The utility model discloses a theory of operation does:

the utility model discloses during the installation, earlier with 2 covers of seal rubber ring on the draw-in groove 301 of sleeve pipe 3 front end, pack into in proper order case shell 7 and case umbrella 4 in the case subassembly again in the sleeve pipe 3, then will the whole of sleeve pipe 2, case subassembly and seal rubber ring 2 formation is by the air inlet embedding gas valve body 1 of gas valve body 1 in, twists the air inlet of gas valve body 1 with swivel nut 5 at last to screw and compress tightly sleeve pipe 3 and seal rubber ring 2. After the gas enters the gas valve body 1, the valve core umbrella 4 keeps a static state under normal pressure and flow, the gas flows through a gap on the valve core shell 7, when a pipeline connected with the gas valve leaks or a rubber pipe falls off, the gas flow in the gas valve body 1 is increased instantly, and the valve core umbrella 4 is pushed to move forwards to block the vent 303, so that the purpose of automatically cutting off the gas is realized.

The utility model discloses utilize sealed rubber ring 2 to guarantee the sealed between 3 front ends of sleeve pipe and the 1 inside spacing boss 6 of gas valve body, prevent that the gas from leaking, and the utility model discloses utilize the outside to be the sleeve pipe 3 on plain noodles and inject case subassembly position, to the gas valve that some wall is thin like this, only need to process screw-thread fit at air inlet department the swivel nut 5, this has reduced the processing degree of difficulty and has also guaranteed valve body intensity.

Claims

1. The utility model provides a prevent leaking case fixed assembly structure in gas valve which characterized in that: including gas valve body (1), sealed rubber ring (2), sleeve pipe (3), swivel nut (5) and case subassembly, wherein the air flue inner wall of gas valve body (1) is equipped with spacing boss (6), and during the air flue of gas valve body (1) was located in sleeve pipe (3) and swivel nut (5), just spacing boss (6) with be equipped with sealed rubber ring (2) between sleeve pipe (3), swivel nut (5) are located sleeve pipe (3) are kept away from spacing boss (6) one side, swivel nut (5) and gas valve body (1) air flue inner wall threaded connection, just sleeve pipe (3) and sealed rubber ring (2) pass through swivel nut (5) top is tight, and the case subassembly is located in sleeve pipe (3).

2. A gas valve internal leakage prevention valve core fixing and assembling structure as claimed in claim 1, wherein: the front end of the sleeve (3) is a reducing end, a circle of clamping groove (301) is formed in the outer side of the reducing end, and the sealing rubber ring (2) is sleeved in the clamping groove (301).

3. A gas valve internal leakage prevention valve core fixing and assembling structure as claimed in claim 1, wherein: the valve core assembly comprises a valve core umbrella (4) and a valve core shell (7), the valve core shell (7) is arranged in the sleeve (3), and the valve core umbrella (4) is movably arranged in the valve core shell (7).

4. A gas valve internal leakage prevention valve core fixing and assembling structure as claimed in claim 3, wherein: sleeve pipe (3) front end is reducing end, just reducing end inboard axial horizontal through-hole forms blow vent (303), reducing end inboard perpendicular inner wall forms spacing tang (302), case shell (7) front end with spacing tang (302) offset, blow vent (303) pass through case umbrella (4) antedisplacement is stopped up.