CN214617910U

CN214617910U - Over-flow cut-off type sharp-nose gas valve

Info

Publication number: CN214617910U
Application number: CN202121030882.8U
Authority: CN
Inventors: 李昌浩; 林纪
Original assignee: Zhejiang Haoji Fluid Technology Co ltd
Current assignee: Zhejiang Haoji Fluid Technology Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-11-05
Anticipated expiration: 2031-05-14

Abstract

The utility model provides an overflow cut-off type sharp mouth gas valve belongs to valve technical field. The valve core plate solves the problems that the existing hemispherical valve core plate for overcurrent cutoff of the gas valve is easy to shake during displacement, and the structure for overcurrent cutoff is unstable. The overcurrent cut-off type sharp-mouth gas valve comprises a valve body, wherein a ball valve core is arranged in the valve body and is used for controlling the opening or closing of the valve body, and an inlet pipe joint of the valve body is detachably connected with an overcurrent cut-off assembly and is used for overcurrent cut-off protection of the valve body through the overcurrent cut-off assembly. The utility model has the advantages of reasonable design, simply, the flow valve case leads displacement stable in structure in the flow valve cover, and the phenomenon of difficult emergence radial float, the flow valve case with flow valve cover seal cooperation structure better, overflow and close the security high, convenient assembly production.

Description

Over-flow cut-off type sharp-nose gas valve

Technical Field

The utility model belongs to the technical field of the valve, a flow over cutting off type sharp mouth gas valve is related to.

Background

With the popularization and use of gas in family life, fire accidents caused by explosion of a gas meter due to the external benefit of the gas and sudden rise and overpressure of gas supply pressure occur at times, so that the over-flow cut-off gas valve is applied to a gas pipeline.

For example, chinese patent literature discloses an automatic overflow safety shut-off valve for gas combustion [ application No.: 97216582.7, respectively; authorization notice number: CN2299971], which comprises a fixed position sleeve, a valve core rod positioning guide support and a pushing return spring, wherein the valve core plate is integrally connected with the valve core plate, the positioning sleeve is provided with a valve core cavity and a valve core rear cavity, the hemispherical valve core plate is arranged in the valve core cavity, the wall surface of the valve core cavity is a conical inclined surface, the valve core rod positioning guide support is fixed in the valve core rear cavity of the positioning sleeve, and the valve core rod passes through a guide hole on the support and is connected on the support by the pushing return spring arranged on the valve core rod.

In the structure, the displacement structure of the hemispherical valve core plate in the positioning guide support has poor stability, the hemispherical valve core plate is easy to shake during displacement, the structure of the hemispherical valve core plate and the valve core cavity wall in sealing fit for overcurrent cutting is unstable, the overcurrent cutting tightness is poor, and the use is inconvenient; and the hemispherical valve core plate is inconvenient to assemble in the valve core cavity and inconvenient to produce.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, cross flow valve core displacement and stable, sealed cooperation is better, the convenient closed type sharp mouth gas valve that overflows of assembly production.

The purpose of the utility model can be realized by the following technical proposal: an overcurrent cut-off type sharp-mouth gas valve comprises a valve body, wherein a ball valve core is arranged in the valve body and is used for controlling the opening or closing of the valve body; the overcurrent cutoff assembly comprises an overcurrent valve core and an overcurrent valve sleeve, the overcurrent valve core is coaxially and elastically arranged in the overcurrent valve sleeve and is in clearance fit with the overcurrent valve sleeve, the overcurrent valve sleeve is coaxially and hermetically connected in an air inlet pipe joint of the valve body, when a flowing medium in the air inlet pipe joint of the valve body flows over, the flowing medium drives the overcurrent valve core to axially displace, so that the overcurrent valve core and the overcurrent valve sleeve form abutting seal, the valve body performs overcurrent closing protection, and a guide supporting device used for axially guiding and displacing the overcurrent valve core is arranged between the overcurrent valve core and the overcurrent valve sleeve.

This overflow cut-off formula sharp mouth gas valve overflows case and overflows the valve barrel and lean on seal structure reliably, through setting up direction strutting arrangement, this overflow valve dabber is stable to the directional displacement, and the security is high, overflows the overflow valve cover among the cut-off subassembly and can dismantle the connection in the admission line union of valve body, production convenient assembling.

In foretell flow through cutting off formula sharp mouth gas valve, direction strutting arrangement include with flow through the glass holder that the valve barrel coaxial direction set up, the cross flow case on have with flow through the guide connecting rod that the valve barrel coaxial direction set up, the guide connecting rod of cross flow case pass the bottom of glass holder, and with the bottom clearance fit of glass holder, the end of wearing to establish of guide connecting rod can dismantle and link firmly the annular cover, the guide connecting rod between the glass holder on the cover be equipped with compression spring, the cross flow case on the guide connecting rod under compression spring's elastic action with flow through valve barrel clearance fit. The purpose of setting up like this makes direction connecting rod assembly structure stable, causes the axial guide displacement that the excessive flow case can be more steady to lean on with the excessive flow valve cover and seals.

In the overflow cut-off type sharp-mouth gas valve, the cup sleeve is internally provided with the guide sleeve which is coaxially arranged with the cup sleeve, and the guide connecting rod passes through the guide sleeve and is matched with the guide sleeve in a guide way. The purpose of this is: through the guide effect of uide bushing, can effectually prevent the radial drunkenness of direction connecting rod when axial direction displacement, the stability of structure is higher.

In the overflow cut-off type sharp-nose gas valve, the overflow valve core is umbrella-shaped, and the guide connecting rod penetrates through the clearance fit part at the bottom of the cup sleeve and is distributed opposite to the umbrella opening of the overflow valve core. The purpose that sets up like this is that the overflowing valve core is the effectual pocket flow effect of carrying on to the circulation medium of umbelliform, and structural stability is high.

In the overflow cut-off type sharp-mouth gas valve, the inner end of the overflow valve sleeve is provided with a necking assembly position, the axial clamping position of the cup sleeve is abutted against and assembled in the overflow valve sleeve and is axially abutted against and matched with the necking assembly position, the outer wall of the cup sleeve is fixedly provided with a sealing ring, and the sealing ring and the inner wall of the inner end of the overflow valve sleeve are abutted against and matched with each other in a sealing manner. The inner wall of the overflowing valve sleeve is provided with a section of conical assembly channel position, and the cup sleeve is assembled in the conical assembly channel position of the overflowing valve sleeve; the cup sleeve and the overflowing valve sleeve are stable in clamping and assembling structure, and the cup sleeve can be effectively prevented from moving in the radial direction of the necking assembling position.

In the overflow cut-off type sharp-nose gas valve, the inner wall of the necking assembly is fixedly provided with the rubber sealing ring in a vulcanization mode, and the umbrella-shaped outer wall of the overflow valve core and the rubber sealing ring of the necking assembly are abutted and sealed. The purpose of setting like this is when the circulation medium in the inlet pipe coupling of valve body overflows, and this overflows that the case and the valve sleeve of overflowing cooperate stable in structure, and the valve body overflows the security of closing protection.

Compared with the prior art, the flow-through cut-off type sharp-nose gas valve has the advantages that: the structure design is reasonable and simple, the guide displacement structure of the overflowing valve core in the overflowing valve sleeve is stable, the phenomenon of radial movement is not easy to occur, the overflowing valve core and the overflowing valve sleeve are good in sealing fit structure, the overflowing closing safety is high, and assembly and production are convenient.

Drawings

Fig. 1 is a schematic perspective view of the flow-cut-off type sharp-nose gas valve.

Fig. 2 is a schematic perspective view of the flow-cut-off type sharp-nose gas valve.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure, 1, a valve body; 2. a ball valve core; 3. an over-flow valve core; 4. an overflow valve housing; 5. a cup sleeve; 6. a guide connecting rod; 7. an annular sleeve; 8. a compression spring; 9. a guide sleeve; 10. a necking assembly position; 11. a seal ring; 12. a rubber seal ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the overcurrent cutoff type sharp-nose gas valve mainly comprises a valve body 1, wherein a ball valve core 2 is arranged in the valve body 1, the ball valve core 2 is used for controlling the opening or closing of the valve body 1, and an overcurrent cutoff assembly is detachably connected in a gas inlet pipe joint of the valve body 1 and is used for overcurrent closing protection of the valve body 1; during actual manufacturing, the specific structure of the overcurrent cutoff assembly is as follows: the valve body 1 is mainly composed of a flow valve core 3 and a flow valve sleeve 4, wherein the flow valve core 3 is coaxially and elastically arranged in the flow valve sleeve 4, the flow valve core 3 is in clearance fit with the flow valve sleeve 4, the flow valve sleeve 4 is coaxially connected in an air inlet pipe joint of the valve body 1 in a threaded connection mode and is in sealing fit with the air inlet pipe joint of the valve body 1, when a flowing medium in the air inlet pipe joint of the valve body 1 flows through, the flowing medium drives the flow valve core 3 to axially displace, so that the flow valve core 3 and the flow valve sleeve 4 form abutting seal, and the valve body 1 is subjected to flow closing protection; a guiding and supporting device for guiding and displacing the flow-through valve core 3 in the axial direction is arranged between the flow-through valve core 3 and the flow-through valve sleeve 4.

In actual manufacturing, the guide support device is implemented by the following specific modes: the valve core of the overflowing valve is mainly composed of a cup sleeve 5 which is coaxially arranged with an overflowing valve sleeve 4, a guide connecting rod 6 which is coaxially arranged with the overflowing valve sleeve 4 is arranged on the overflowing valve core 3, the guide connecting rod 6 of the overflowing valve core 3 penetrates through the bottom of the cup sleeve 5 and is in clearance fit with the bottom of the cup sleeve 5, an annular sleeve 7 is detachably and fixedly connected to the penetrating end of the guide connecting rod 6, a compression spring 8 is sleeved on the guide connecting rod 6 between the annular sleeve 7 and the cup sleeve 5, and the overflowing valve core 3 on the guide connecting rod 6 is in clearance fit with the overflowing valve sleeve 4 under the elastic action of the compression spring 8; specifically, the method comprises the following steps: the cup sleeve 5 is internally provided with a guide sleeve 9 which is coaxially arranged with the cup sleeve 5, the guide connecting rod 6 passes through the guide sleeve 9, and the guide connecting rod 6 is in guide fit with the guide sleeve 9.

During actual manufacturing, the overflowing valve core 3 is umbrella-shaped, and the guide connecting rods 6 penetrate through the clearance fit part at the bottom of the cup sleeve 5 and are distributed opposite to the umbrella opening of the overflowing valve core 3.

During actual manufacturing, the inner end of the overflowing valve sleeve 4 is provided with a necking assembly position 10, the cup sleeve 5 is axially clamped and abutted to be assembled in the overflowing valve sleeve 4 and is axially abutted to and matched with the necking assembly position 10, a sealing ring 11 is fixedly arranged on the outer wall of the cup sleeve 5, and the sealing ring 11 is abutted to and hermetically matched with the inner wall of the inner end of the overflowing valve sleeve 4; specifically, the method comprises the following steps: the inner wall of the throat assembly 10 is fixedly provided with a rubber sealing ring 12 in a vulcanization mode, and the umbrella-shaped outer wall of the overflow valve core 3 and the rubber sealing ring 12 of the throat assembly 10 are abutted and sealed.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An overcurrent cut-off type sharp-mouth gas valve comprises a valve body (1), wherein a ball valve core (2) is arranged in the valve body (1), and the ball valve core (2) is used for controlling the opening or closing of the valve body (1), and is characterized in that an overcurrent cut-off component is detachably connected in an air inlet pipe joint of the valve body (1) and is used for overcurrent cut-off protection of the valve body (1) through the overcurrent cut-off component; overcurrent cut-off assembly include overcurrent case (3) and overflow valve cover (4), overcurrent case (3) set up in overflowing valve cover (4) with axial elasticity and overflow case (3) and overflow valve cover (4) clearance fit, overflow valve cover (4) with axial sealing connection in the air intake pipe connector of valve body (1), when the circulation medium in the air intake pipe connector of valve body (1) overflows, this circulation medium drives overcurrent case (3) axial displacement, causes overcurrent case (3) and overflows valve cover (4) and forms to lean on to seal, valve body (1) overflows and closes the protection, overcurrent case (3) and overflow valve cover (4) between be provided with the guiding support device who is used for overcurrent case (3) axial guiding displacement.

2. The over-flow cut-off type sharp-mouth gas valve as claimed in claim 1, wherein the guiding and supporting device comprises a cup sleeve (5) coaxially arranged with the over-flow valve sleeve (4), the over-flow valve core (3) is provided with a guiding connecting rod (6) coaxially arranged with the over-flow valve sleeve (4), the guiding connecting rod (6) of the over-flow valve core (3) penetrates through the bottom of the cup sleeve (5) and is in clearance fit with the bottom of the cup sleeve (5), the penetrating end of the guiding connecting rod (6) is detachably and fixedly connected with an annular sleeve (7), a compression spring (8) is sleeved on the guiding connecting rod (6) between the annular sleeve (7) and the cup sleeve (5), and the over-flow valve core (3) on the guiding connecting rod (6) is in clearance fit with the over-flow valve sleeve (4) under the elastic action of the compression spring (8).

3. An over-flow cut-off type sharp-nose gas valve as claimed in claim 2, wherein the cup sleeve (5) is internally provided with a guide sleeve (9) which is coaxially arranged with the cup sleeve (5), the guide connecting rod (6) passes through the guide sleeve (9), and the guide connecting rod (6) is in guide fit with the guide sleeve (9).

4. An over-flow cut-off type sharp-nose gas valve as claimed in claim 3, wherein the over-flow valve core (3) is umbrella-shaped, and the guide connecting rod (6) passes through the clearance fit part at the bottom of the cup sleeve (5) and is distributed opposite to the umbrella mouth of the over-flow valve core (3).

5. An over-flow cut-off type sharp-nose gas valve as claimed in claim 4, wherein the inner end of the over-flow valve sleeve (4) is provided with a necking fitting location (10), the cup sleeve (5) is axially clamped and abutted against and assembled in the over-flow valve sleeve (4) and is axially abutted against and matched with the necking fitting location (10), the outer wall of the cup sleeve (5) is fixedly provided with a sealing ring (11), and the sealing ring (11) is abutted against and matched with the inner wall of the inner end of the over-flow valve sleeve (4) in a sealing manner.

6. An over-flow cut-off type sharp-nose gas valve as claimed in claim 5, wherein the inner wall of the throat assembly (10) is fixedly provided with a rubber sealing ring (12) in a vulcanization mode, and the umbrella-shaped outer wall of the over-flow valve core (3) and the rubber sealing ring (12) of the throat assembly (10) are abutted and sealed.