CN219159638U

CN219159638U - Gas self-closing valve

Info

Publication number: CN219159638U
Application number: CN202320357738.8U
Authority: CN
Inventors: 冯君辉; 林纪
Original assignee: Zhejiang Haoji Fluid Technology Co ltd
Current assignee: Zhejiang Haoji Fluid Technology Co ltd
Priority date: 2023-03-02
Filing date: 2023-03-02
Publication date: 2023-06-09
Anticipated expiration: 2033-03-02

Abstract

The utility model provides a gas self-closing valve, and belongs to the technical field of gas valves. It has solved the inconvenient scheduling problem of current gas self-closing valve installation. The gas self-closing valve comprises a valve body, a valve cover, a pull rod and a sliding assembly, wherein the sliding assembly comprises a sliding rod and a sliding base, the outer end of the sliding rod is fixedly connected with a sealing gasket, the valve body is provided with a mounting seat which is integrally formed with the sliding rod, the mounting seat is provided with a sliding groove which is used for the sliding rod to penetrate through and play a guiding role, the sliding rod and the sliding groove are circumferentially limited, the sliding groove is provided with a guiding groove which is concave and is used for the sliding base to insert, an iron cover is fixedly connected to the top of the mounting seat, the top of the sliding base penetrates out of the iron cover and is fixedly connected with a magnet which is used for magnetic attraction with the inner end of the pull rod, the inner end of the valve body at an air inlet hole is provided with a radially inwards protruding shoulder which is used for sealing gasket, the sliding base is provided with a chute which is obliquely arranged towards the side surface of the sliding rod, and the sliding rod is provided with a connecting rod positioned in the chute. The utility model has the advantages of low manufacturing cost, convenient installation and the like.

Description

Gas self-closing valve

Technical Field

The utility model belongs to the technical field of gas valves, and relates to a gas pipeline self-closing valve.

Background

The gas self-closing valve is a device which is installed on a low-pressure gas pipeline, does not need electric power or other external power when the gas supply pressure of the pipeline is under-pressure or over-pressure, and can be automatically closed and needs to be manually opened.

The applicant has devised a gas line self-closing valve and filed a patent [ application number: 202222475301.2; authorized bulletin number: CN217898923U ], it includes valve body, valve bonnet and valve stem, the valve bonnet is installed on said valve body, there are valve chambers between valve body and said valve bonnet, there are air inlet channels and air outlet channels communicated with valve chamber on the valve body, there are diaphragms in the valve chamber, the top of the valve stem is connected with said valve bonnet, the bottom of the valve stem passes the diaphragm and links with diaphragm fixedly, there are sliding components in the valve chamber, the sliding component includes sliding base, sliding rod, sealing block and sealing gasket, the top of the sliding base installs the magnet, the magnet attracts with bottom magnetism of the valve stem, there are oblique sliding grooves in the sliding base, the outer sidewall of the sealing block is clung to hole wall of the air inlet channel, there are air vents communicated with air inlet channels on the sealing block, the sealing gasket is connected with said sliding rod, the end of the sliding rod passes the air vent and locates in the sliding groove, the sealing gasket is clung to the sealing block, the air vent is in the closed state; and the valve cover is lifted, the valve cover drives the valve rod, the magnet and the sliding base to move upwards, and the sliding rod moves along the sliding groove towards the direction close to the air inlet channel, so that the sealing gasket is driven to separate from the sealing block, and the vent hole is communicated with the air inlet channel.

The gas pipeline self-closing valve can realize that the superpressure closes fast, and sliding component shaping and installation are also comparatively convenient, but sliding base, sealing block all need the independent die sinking in the sliding component, increased manufacturing cost, though seal through the sealing washer between sealing block and the valve body, also increased the leak source, increased the inefficacy risk, in addition the tip of sliding rod need sliding component slope to pack into the valve body during the installation, the tip of sliding rod has the problem that drops in the sliding groove from sliding base, need adjust once more after the installation, and sliding component's installation is still not convenient enough.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a gas self-closing valve which is low in manufacturing cost, good in use safety and convenient to install.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a gas self-closing valve, includes valve body, valve gap, pull rod and sliding component, the valve body inside be cavity and valve body both ends be inlet port and venthole respectively, the valve gap link firmly at valve body top and the centre gripping between valve gap and the valve body have the diaphragm, the inner of pull rod passes the diaphragm and links firmly with the diaphragm mutually, the outer end of pull rod stretches out the valve gap and has linked firmly the pull cap, sliding component includes slide bar, slide base, the outer end of slide bar has linked firmly sealed the pad, its characterized in that, the valve body have rather than integrated into one piece's mount pad, the mount pad have the slide groove that supplies the slide bar to wear to establish and play the guide effect, slide bar and slide groove circumference spacing, the slide groove have concave and supply slide base male guide way, an iron cover links firmly at the top of mount pad, the top of slide base wear out the iron cover and link firmly be used for with the magnet that the inner magnetism of pull rod is mutually attracted, the inner of valve body have radial inwards protruding and supply sealed shoulder of slide bar, the side of slide base have the chute that sets up towards the slide bar, the slide bar has the slide bar that inclines to have the slide bar in the slide bar.

In the gas self-closing valve, the sliding groove is a rectangular groove, the sliding rod is provided with a sliding part which is matched with the sliding groove and is in a cuboid shape, the sliding part is provided with a concave cavity for the sliding base to be inserted, and the sliding part is provided with the connecting rod in the concave cavity.

In the above gas self-closing valve, the top surface of the sliding part is provided with a protruding block protruding out and abutting against the bottom surface of the iron cover.

In the gas self-closing valve, the sliding base is provided with an inclined surface which is obliquely arranged and connected with the lower port of the chute, and the joint of the upper edge of the lower port of the chute and the lower edge of the lower port of the chute with the inclined surface is in fillet transition.

In the gas self-closing valve, the iron cover is provided with the symmetrically arranged connecting parts, the mounting seat is provided with the supporting parts which are supported by the two connecting parts, and the connecting parts are fixedly connected with the supporting parts through screws.

In the gas self-closing valve, the stop shoulder is provided with a circle of convex ring which is outwards protruded and used for the sealing gasket to prop against.

In the gas self-closing valve, the air inlet hole is internally provided with the flow limiting valve core.

In the gas self-closing valve, the gas outlet hole is connected with a ball valve.

Compared with the prior art, the gas self-closing valve has the advantages of low manufacturing cost, convenience in installation, good working stability and good use safety.

Drawings

Fig. 1 is a perspective view of the present gas self-closing valve.

Fig. 2 is a structural sectional view of the present gas self-closing valve.

Fig. 3 is a partial construction diagram of the present gas self-closing valve.

Fig. 4 is a schematic view of the structure of the valve body in the gas self-closing valve.

Fig. 5 is a perspective view of the sliding rod of the gas self-closing valve.

Fig. 6 is a perspective view of the sliding base of the gas self-closing valve.

In the figure, 1, a valve body; 2. a valve cover; 3. a pull rod; 4. an air inlet hole; 5. an air outlet hole; 6. a membrane; 7. pulling the cap; 8. a slide bar; 9. a sliding base; 10. a sealing gasket; 11. a mounting base; 12. a sliding groove; 13. a guide groove; 14. an iron cover; 15. a magnet; 16. a shoulder; 17. a chute; 18. a connecting rod; 19. a sliding part; 20. a cavity; 21. a bump; 22. an inclined surface; 23. a connection part; 24. a support part; 25. a screw; 26. a convex ring; 27. a flow restricting valve core; 28. ball valve.

Description of the embodiments

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the gas self-closing valve comprises a valve body 1, a valve cover 2, a pull rod 3 and a sliding component, wherein a cavity is formed in the valve body 1, two ends of the valve body 1 are respectively provided with an air inlet hole 4 and an air outlet hole 5, the valve cover 2 is fixedly connected to the top of the valve body 1, a membrane 6 is clamped between the valve cover 2 and the valve body 1, the inner end of the pull rod 3 penetrates through the membrane 6 and is fixedly connected with the membrane 6, the outer end of the pull rod 3 extends out of the valve cover 2 and is fixedly connected with a pull cap 7, the sliding component comprises a sliding rod 8 and a sliding base 9, a sealing gasket 10 is fixedly connected to the outer end of the sliding rod 8, the valve body 1 is provided with an installation seat 11 integrally formed with the sliding rod 1, the installation seat 11 is provided with a sliding groove 12 for the sliding rod 8 to penetrate and play a guiding role, the sliding rod 8 and the sliding groove 12 is circumferentially limited, the sliding groove 12 is provided with a guiding groove 13 for the sliding base 9 to be inserted, an iron cover 14 is fixedly connected to the top of the installation seat 11, a magnet 15 for sucking the inner end of the sliding base 9 penetrates through the iron cover 14 and is fixedly connected to the inner end of the iron cover 4 and is fixedly connected to the inner end of the iron cover 9, a magnet 15 for sucking the inner end of the 3, the sealing gasket 10 is provided with a chute 17, the inner end of the valve body 4 is provided with a sealing gasket 17, and a chute 17 is provided with a sealing groove 17 is arranged in the sliding seat 17, and has a chute is provided with a sealing groove 17, and a sealing groove is arranged in the sealing groove is opposite a sealing groove is provided.

Compared with the gas pipeline self-closing valve in the background art, the gas self-closing valve has the advantages that two pairs of dies can be saved, the manufacturing cost is reduced, leakage points are reduced by the aid of the retaining shoulders 16, and the use safety is improved; during installation, the sliding rod 8 sleeved with the sealing gasket 10 is inserted into the air inlet hole 4, the sliding rod 8 penetrates through the sliding groove 12 and is limited in the circumferential direction, the sliding rod 8 cannot rotate relative to the sliding groove 12, the sliding base 9 is inserted into the guide groove 13, the connecting rod 18 slides into the chute 17, and therefore the installation of the sliding rod 8 and the sliding base 9 is completed, the installation is convenient, in the use process, the sliding groove 12 guides the sliding rod 8, the guide groove 13 guides the sliding base 9, and the working stability and the use safety are improved.

Further, the sliding groove 12 is a rectangular groove, the sliding rod 8 has a rectangular sliding portion 19 fitted to the sliding groove 12, the sliding portion 19 has a cavity 20 into which the sliding base 9 is inserted, and the sliding portion 19 has a link 18 in the cavity 20. Therefore, the sliding rod 8 and the sliding groove 12 are limited in the circumferential direction, the sliding part 19 is matched with the sliding groove 12, the sliding rod 8 is displaced smoothly, the concave cavity 20 is used for the sliding base 9 to be inserted, and therefore the structure is compact, and the space utilization rate is high.

The top surface of sliding part 19 has the protrusion and contradicts in the lug 21 of iron cover 14 bottom surface, and the top surface of sliding part 19 need not to make like this and is contradicted the iron cover 14 bottom surface, can save the consumptive material of making slide bar 8, and lug 21 is used for contradicting the iron cover 14 bottom surface, avoids sliding part 19 to warp up, and slide bar 8 job stabilization nature is good, and the quantity of lug 21 is two and is located the both ends department of sliding part 19 top surface respectively in this embodiment. The slide base 9 is provided with the inclined plane 22 which is obliquely arranged and connected with the lower port of the chute 17, the upper edge of the lower port of the chute 17 and the joint of the lower edge of the lower port of the chute 17 and the inclined plane 22 are in round angle transition, the inclined plane 22 plays a role in guiding, when the slide base 9 is inserted into the guide groove 13, the connecting rod 18 slides into the chute 17 along the inclined plane 22, the position of the slide rod 8 does not need to be manually adjusted, and the installation is more convenient.

The iron cover 14 is provided with symmetrically arranged connecting parts 23, the mounting seat 11 is provided with supporting parts 24 supported by the two connecting parts 23, and the connecting parts 23 are fixedly connected with the supporting parts 24 through screws 25, so that the iron sheet is convenient and stable to connect. The shoulder 16 is provided with a circle of convex ring 26 which is convex outwards and is used for the sealing gasket 10 to prop against, and when in sealing, the convex ring 26 is embedded into the sealing gasket 10, so that the sealing performance is good, and the use safety is improved.

The air inlet 4 is provided with the flow limiting valve core 27, and the flow limiting valve core 27 limits the gas flow, namely when the gas flow of the air inlet 4 is overlarge, the flow limiting valve core 27 is closed, and only when the gas flow of the air inlet 4 is lower than the set flow, the flow limiting valve core 27 is opened, so that the use safety is improved. The valve body 1 is provided with a ball valve 28 for controlling the opening and closing of the air outlet hole 5, and the gas flow of the air outlet hole 5 is conveniently regulated and controlled through the ball valve 28.

What is not described in detail in this specification is prior art known to those skilled in the art. The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a gas self-closing valve, includes valve body (1), valve gap (2), pull rod (3) and slip subassembly, valve body (1) inside be the cavity and valve body (1) both ends be inlet port (4) and venthole (5) respectively, valve gap (2) link firmly at valve body (1) top and press from both sides between valve gap (2) and valve body (1) hold diaphragm (6), the inner of pull rod (3) is passed diaphragm (6) and is linked firmly with diaphragm (6), the outer end of pull rod (3) stretches out valve gap (2) and has linked firmly pull cap (7), slip subassembly includes slide bar (8), slide base (9), the outer end of slide bar (8) has linked firmly sealed pad (10) in the end, characterized in that, valve body (1) have with its integrated into one piece mount pad (11), mount pad (11) have and supply slide bar (8) wear to establish and play guiding role slide bar (8) and slide bar (12) circumference spacing, slide bar (12) have concave and supply slide base (9) to insert in the top of a guide slot (14) that links firmly at the top (11), the top of the sliding base (9) penetrates out of the iron cover (14) and is fixedly connected with a magnet (15) which is magnetically attracted with the inner end of the pull rod (3), the inner end of the valve body (1) at the air inlet hole (4) is provided with a radially inwards protruding retaining shoulder (16) for sealing the sealing gasket (10), the side surface of the sliding base (9) facing the sliding rod (8) is provided with an inclined groove (17) which is obliquely arranged, and the sliding rod (8) is provided with a connecting rod (18) positioned in the inclined groove (17).

2. The gas self-closing valve according to claim 1, wherein the sliding groove (12) is a rectangular groove, the sliding rod (8) has a sliding part (19) which is adapted to the sliding groove (12) and is in a rectangular parallelepiped shape, the sliding part (19) has a cavity (20) into which the sliding base (9) is inserted, and the sliding part (19) has the connecting rod (18) in the cavity (20).

3. The gas self-closing valve according to claim 2, wherein the top surface of the sliding part (19) is provided with a protruding block (21) protruding from and abutting against the bottom surface of the iron cover (14).

4. A gas self-closing valve according to claim 3, wherein the sliding base (9) is provided with an inclined surface (22) which is obliquely arranged and connected with the lower port of the chute (17), and the junction between the upper edge of the lower port of the chute (17) and the inclined surface (22) is a rounded transition.

5. The gas self-closing valve according to claim 4, wherein the iron cover (14) is provided with symmetrically arranged connecting parts (23), the mounting seat (11) is provided with supporting parts (24) supported by the two connecting parts (23), and the connecting parts (23) are fixedly connected with the supporting parts (24) through screws (25).

6. The gas self-closing valve according to claim 5, wherein the shoulder (16) has a collar (26) protruding outwards and against which the gasket (10) abuts.

7. The gas self-closing valve according to claim 6, wherein a flow limiting valve core (27) is arranged in the gas inlet hole (4).

8. The gas self-closing valve according to claim 7, wherein the gas outlet hole (5) is connected with a ball valve (28).