CN208487249U - Gas pipeline self-closing valve - Google Patents
Gas pipeline self-closing valve Download PDFInfo
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- CN208487249U CN208487249U CN201820626199.2U CN201820626199U CN208487249U CN 208487249 U CN208487249 U CN 208487249U CN 201820626199 U CN201820626199 U CN 201820626199U CN 208487249 U CN208487249 U CN 208487249U
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- valve
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- gas pipeline
- closing
- self
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Abstract
The utility model discloses actuator is equipped in a kind of lower chamber of gas pipeline self-closing valve, actuator is equipped with cam close to one end of valve rod, the end face of one end of valve rod is against on the cam surface of cam, when valve inner air pressure is normal, the end face of one end of valve rod is against on the convex surface of cam, valve rod is moved to valve body air inlet pipe direction at this time, and valve body is in the open state；When gas supply conduit pressure occurs under-voltage, rubber diaphragm is moved downward, and drives actuator to move downward, to make valve rod move to lower chamber direction and close valve；When superpressure occurs in gas supply conduit pressure, rubber diaphragm is moved upwards, and drives actuator to move upwards, to make valve rod move to lower chamber direction and close valve；Structure is simple, the closing of core assembly is triggered by cam structure, control precision is higher, so that the security performance of self-closing valve is preferable.
Description
Technical field
The utility model relates to gas-fired equipment technical fields, more particularly to a kind of gas pipeline self-closing valve.
Background technique
Clean energy resource of the combustion gas as " low consumption, high yield, low pollution, high benefit ", has been widely used the day of people
Often in production and life.In the use process of combustion gas, there is following security risk: after gas pipeline, which supplies, to interrupt suddenly, people
Often due to carelessness and forget to close valve, gas leakage will be caused after combustion gas restores gas supply, explosion occurs and even joins
Dynamic explosion；Gas pipeline, which is registered one's residence, is transferred to low pressure for mesohigh by pressure regulator, if pressure regulator fails, mesohigh, which is directly registered one's residence, also can
Cause safety accident；It is connect using sebific duct with kitchen range, sebific duct, which falls off or ruptures, can equally cause safety accident.For above-mentioned combustion
Security risk in gas use process, it usually needs installing has the safety valve for automatically cutting off gas pipeline function, i.e. self-closing valve.
Self-closing valve is mounted on low-pressure fuel gas system pipeline, when there is under-voltage, superpressure in gas supply conduit pressure, not electricity consumption or other outside
The safe handling to ensure combustion gas can be automatically closed in power.But the self-closing valve internal structure of the prior art is complicated, passes through drawing
The structure of bar triggers the closing of spool, and control precision is lower, to influence the security performance of self-closing valve.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of gas pipeline self-closing valve, and the self-closing valve arrangement is simple,
The closing of core assembly is triggered by cam structure, control precision is higher, so that the security performance of self-closing valve is preferable.
The technical solution of the utility model is to provide a kind of gas pipeline self-closing valve having following structure, including
Valve body and valve deck；The valve deck is mounted on the valve body；Self-closing valve chamber is equipped between the valve body and valve deck；Institute
Be equipped with rubber diaphragm in the self-closing valve chamber stated and the rubber diaphragm the self-closing valve chamber is divided to be formed it is mutually disconnected
Upper cavity and lower chamber；The body cavity is connected with the lower chamber；Rod assembly is equipped in the upper cavity,
The lower end of the pull rod of the rod assembly is fixed on the rubber diaphragm；Core assembly, institute are equipped in the valve body
The closing that the valve rod for the core assembly stated can be axially moved back and forth along the valve body to application valve body, the one of the valve rod
End is protruded into the lower chamber；Actuator, one end of the actuator and the drawing are equipped in the lower chamber
The lower end of bar is fixedly connected, and the actuator is equipped with cam close to the side of the valve rod, one end of the valve rod
End face is against on the cam surface of the cam, and the actuator, which moves up and down, drives the valve rod to move back and forth.
After using the above structure, the gas pipeline self-closing valve of the utility model has following excellent compared with prior art
Point:
Due in the lower chamber of the gas pipeline self-closing valve of the utility model be equipped with actuator, actuator close to valve rod one
End is equipped with cam, and the end face of one end of valve rod is against on the cam surface of cam, when valve inner air pressure is normal, one end of valve rod
End face be against on the convex surface of cam, valve rod is moved to valve body air inlet pipe direction at this time, and valve body is in the open state；When pipeline supplies
When atmospheric pressure occurs under-voltage, rubber diaphragm is moved downward, and actuator is driven to move downward, so that valve rod be made to transport to lower chamber direction
It moves and closes valve；When superpressure occurs in gas supply conduit pressure, rubber diaphragm is moved upwards, and actuator is driven to move upwards, from
And it moves valve rod to lower chamber direction and closes valve；Structure is simple, and the closing of core assembly is triggered by cam structure,
It is higher to control precision, so that the security performance of self-closing valve is preferable.
As an improvement, the rod assembly further includes the first return spring, the valve deck is equipped with pilot hole, described
Pull rod upper end cooperate in the pilot hole；First return spring covers outside the pull rod, and described
One end of one return spring is against on valve deck, and the other end of first return spring is against on rubber diaphragm.Using such
After structure, rod assembly drives pull rod to move reciprocatingly by the first return spring, and stress linear change, process is more gentle,
Safety coefficient is higher.
As an improvement, the lower end of the pull rod is exposed at outside the downside of the rubber diaphragm, under the pull rod
End is equipped with limit film, and the limit film limits between the downside of the rubber diaphragm, the pull rod and rubber diaphragm
It is locked by locking member, the locking member is located at the upside of the rubber diaphragm；First return spring it is another
End is against on the locking member.After adopting the structure, structure is simple, easy to assembly.
As an improvement, being equipped with diaphragm support between the locking member and rubber diaphragm.After adopting the structure, structure is more
Add reliable.
As an improvement, the side of the escape pipe in the lower chamber and close to the valve body is equipped with baffle, it is described
There are gap between the upper end of baffle and the inner face of the escape pipe, the downside of the rubber diaphragm is equipped with eardrum, institute
The eardrum stated blocks the gap；Rubber diaphragm, which moves up and down, can drive the eardrum to close and be connected the gap.
After adopting the structure, the structure in eardrum and gap can also play self-closing function when pipeline occurs under-voltage, i.e., when in valve body
When portion's air pressure is normal, eardrum and gap are disengaged, and gas is gone in escape pipe from gap；When gas supply conduit pressure occurs under-voltage,
Rubber diaphragm moves downward, and eardrum blocks gap, and gas is avoided to run in escape pipe；When there is superpressure in gas supply conduit pressure.
As an improvement, the baffle is located at side of the actuator far from cam, the actuator is equipped with
First idler wheel, the side of first idler wheel are against on the side of the baffle, and first idler wheel can be along described
The side of baffle rolls around.After adopting the structure, actuator under the action of the first idler wheel, it is up and down smoothly.
As an improvement, one end of the valve rod is equipped with the second idler wheel, the side of second idler wheel is against described
On cam surface, second idler wheel can be rolled around along the cam surface.As an improvement, effect of the valve rod in the second idler wheel
Under, it is up and down smoothly.
As an improvement, the core assembly further includes spool, seal cap and the second return spring；The spool installation
In the valve body, the spool is equipped with axially directed hole, and the valve rod cooperates in the axially directed hole；Institute
The seal cap stated is connected on the other end of the valve rod, and the seal cap is used to seal the air inlet pipe of the valve body
Inner end；Second return spring covers outside the valve rod, and one end of second return spring is against on the end face of spool,
The other end of second return spring is against on one end of the valve rod.After adopting the structure, the core assembly knot
Structure is simple, easy to assembly.
As an improvement, the spool is equipped with multiple axial ventholes.It is compact-sized after adopting the structure.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the gas pipeline self-closing valve of the utility model.
Fig. 2 is the schematic view of the front view of the gas pipeline self-closing valve of the utility model.
Fig. 3 is the schematic cross-sectional view in the direction A-A in Fig. 2.
Fig. 4 is the enlarged structure schematic diagram of part A in Fig. 3.
It is as shown in the figure: 1, valve body, 2, valve deck, 201, convex neck, 202, pilot hole, 3, air inlet pipe, 4, escape pipe, 5, rubber membrane
Piece, 501, eardrum, 6, upper cavity, 7, lower chamber, 8, pull rod, 801, limit film, 9, valve rod, 10, actuator, 11, cam, 12,
First return spring, 13, pull bonnet, 1301, mounting groove, 14, pressure display button, 15, locking member, 16, diaphragm support, 17,
Baffle, 18, gap, the 19, first idler wheel, the 1901, first wheel shaft, the 1902, first wheel body, the 20, second idler wheel, the 2001, second wheel
Axis, the 2002, second wheel body, 21, spool, 2101, axially directed hole, 2102, axial venthole, 22, seal cap, 23, second times
Position spring, 24, sealing ring.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figures 1 to 4, the gas pipeline self-closing valve of the utility model includes valve body 1 and valve deck 2, the valve deck 2
It is mounted on the valve body 1.The both ends of the valve body 1 are respectively air inlet pipe 3 and escape pipe 4.The valve deck 2 is buckled in institute
On the valve body 1 stated, self-closing valve chamber is equipped between the valve body 1 and valve deck 2.Rubber membrane is equipped in the self-closing valve chamber
The self-closing valve chamber is divided the rubber diaphragm 5 to form mutual disconnected upper cavity 6 under by piece 5 and the rubber diaphragm 5
Cavity 7；1 inner cavity of valve body is connected with the lower chamber 7.
Rod assembly is equipped in the upper cavity 6, the lower end of the pull rod 8 of the rod assembly is fixed on the rubber
On glue film 5；Core assembly is equipped in the valve body 1, the valve rod 9 of the core assembly can be axial along the valve body 1
The closing to application valve body 1 is moved back and forth, one end of the valve rod 9 is protruded into the lower chamber 7；The cavity of resorption
Actuator 10 is equipped in body 7, one end of the actuator 10 is fixedly connected with the lower end of the pull rod 8, the driving
Part 10 is equipped with cam 11 close to the side of the valve rod 9, and the end face of one end of the valve rod 9 is against the cam 11
On cam surface, the actuator 10, which moves up and down, drives the valve rod 9 to move back and forth.The cam surface is convex from top to bottom
The height risen is gradually increased to be gradually reduced again, i.e. the middle part of cam surface is most convex.If actuator 10 moves upwards, one end of valve rod 9
It is first against the upside of cam surface, as actuator 10 constantly moves upwards, valve rod 9 is slowly moved to 3 direction of air inlet pipe until valve
Until one end of bar 9 is against the position of cam surface most protruded, then valve rod 9 is slowly moved to 7 direction of lower chamber until valve again
Until door is closed.
The rod assembly further includes the first return spring 12.The upper end of the valve deck 2 is equipped with hollow convex neck
201, the through-hole at 201 middle part of convex neck is pilot hole 202, and the upper end of the pull rod 8 cooperates in the pilot hole 202
It is interior.For described 12 sets of the first return spring outside the pull rod 8, one end of first return spring 12 is against valve deck 2
On, the other end of first return spring 12 is against on rubber diaphragm 5.The upper end of the convex neck 201 is equipped with hand valve
Cap 13, the upper surface for pulling bonnet 13 are equipped with mounting groove 1301, are equipped with pressure display button in the mounting groove 1301
14, the upper end of the pull rod 8 is connect through the slot bottom of the mounting groove 1301 with the pressure display button 14.
The lower end of the pull rod 8 is exposed at outside the downside of the rubber diaphragm 5, and the lower end of the pull rod 8 is equipped with
Limit film 801, the described limit of limit film 801 in the downside of the rubber diaphragm 5, the pull rod 8 and rubber diaphragm 5 it
Between locked by locking member 15, diaphragm support 16 is equipped between the locking member 15 and rubber diaphragm 5.First return
The other end of spring 12 is against on the locking member 15.
The side of escape pipe 4 in the lower chamber 7 and close to the valve body 1 is equipped with baffle 17, the baffle
17 are located at the side of the actuator 10 far from cam 11.The inner end of the upper end of the baffle 17 and the escape pipe 4
There are gap 18 between face, the downside of the rubber diaphragm 5 is equipped with eardrum 501, and the eardrum 501 blocks the gap
18；Rubber diaphragm 5, which moves up and down, can drive the eardrum 501 to close and be connected the gap 18.
The actuator 10 is equipped with the first idler wheel 19, and the side of first idler wheel 19 is against the baffle 17
Side on, first idler wheel 19 can be rolled around along the side of the baffle 17.First idler wheel 19 includes
The both ends of first wheel shaft 1901, first wheel shaft 1901 are equipped with the first wheel body 1902.One end of the valve rod 9 is equipped with
Second idler wheel 20, the side of second idler wheel 20 are against on the cam surface, and second idler wheel 20 can be along described
11 face of cam roll around.Second idler wheel 20 includes the second wheel shaft 2001, the both ends of second wheel shaft 2001
It is equipped with the second wheel body 2002.
The core assembly further includes spool 21, seal cap 22 and the second return spring 23.The spool 21 is installed
In the valve body 1, the gap between 21 outer wall of spool and 1 inner wall of valve body is sealed by sealing ring 22.
The spool 21 is equipped with axially directed hole 2101, and the valve rod 9 cooperates in the axially directed hole 2101.Described
Seal cap 22 is connected on the other end of the valve rod 9, and the seal cap 22 is used to seal the air inlet pipe of the valve body 1
3 inner end；For described 23 sets of the second return spring outside the valve rod 9, one end of second return spring 23 is against spool
On 21 end face, the other end of second return spring 23 is against on one end of the valve rod 9.The spool 21 is equipped with
Multiple axial direction ventholes 2102.
The working principle of the gas pipeline self-closing valve of the utility model is as follows:
When initial position, rubber diaphragm 5 is in a horizontal position, and second idler wheel 20 of one end of valve rod 9 is located at described convex
The upside of wheel 11, valve is in off state at this time.When thering is combustion gas to pass through in pipeline and when 1 air pressure inside of valve body is normal, rubber
Diaphragm 5 can gradually be heaved to upper cavity direction, and rubber diaphragm 5 drives pull rod 8 to move upwards, and pull rod 8 drives actuator 10 upward
Movement, the convex surface of cam 11 gradually contradict valve rod 9 and move to 3 direction of air inlet pipe, and seal cap 22 is gradually de- with 3 inner end of air inlet pipe
It opens, valve is opened；When gas supply conduit pressure occurs under-voltage, rubber diaphragm 5 is moved downward, and actuator 10 is driven to transport downwards
It is dynamic, to make valve rod 9 move to 7 direction of lower chamber until closing valve；When there is superpressure in gas supply conduit pressure, rubber diaphragm
5 move upwards, and drive actuator 10 to move upwards, to make valve rod 9 move to 7 direction of lower chamber and close valve.
Claims (9)
1. a kind of gas pipeline self-closing valve, it is characterised in that: including valve body and valve deck；The valve deck is mounted on the valve body
On；Self-closing valve chamber is equipped between the valve body and valve deck；Rubber diaphragm and the rubber are equipped in the self-closing valve chamber
Diaphragm divides the self-closing valve chamber to form mutual disconnected upper cavity and lower chamber；The body cavity and described
Lower chamber is connected；
Rod assembly is equipped in the upper cavity, the lower end of the pull rod of the rod assembly is fixed on the rubber diaphragm
On；Be equipped with core assembly in the valve body, the valve rod of the core assembly can axially be moved back and forth along the valve body from
And the closing of application valve body, one end of the valve rod are protruded into the lower chamber；Driving is equipped in the lower chamber
Part, one end of the actuator are fixedly connected with the lower end of the pull rod, and the actuator is close to the valve rod
Side is equipped with cam, and the end face of one end of the valve rod is against on the cam surface of the cam, above and below the actuator
The movement driving valve rod moves back and forth.
2. gas pipeline self-closing valve according to claim 1, it is characterised in that: the rod assembly further includes first time
Position spring, the valve deck are equipped with pilot hole, and the upper end of the pull rod cooperates in the pilot hole；Described first
Return spring covers outside the pull rod, and one end of first return spring is against on valve deck, the first return bullet
The other end of spring is against on rubber diaphragm.
3. gas pipeline self-closing valve according to claim 2, it is characterised in that: the lower end of the pull rod is exposed at described
Rubber diaphragm downside outside, the lower end of the pull rod is equipped with limit film, and the limit film is limited in the rubber membrane
The downside of piece, is locked between the pull rod and rubber diaphragm by locking member, and the locking member is located at the rubber membrane
The upside of piece；The other end of first return spring is against on the locking member.
4. gas pipeline self-closing valve according to claim 3, it is characterised in that: between the locking member and rubber diaphragm
Equipped with diaphragm support.
5. gas pipeline self-closing valve according to claim 1, it is characterised in that: in the lower chamber and close to described
The side of the escape pipe of valve body be equipped with baffle, between the upper end of the baffle and the inner face of the escape pipe there are
Gap, the downside of the rubber diaphragm are equipped with eardrum, and the eardrum blocks the gap；Rubber diaphragm up and down motion can drive
Move the gap that the eardrum is closed and conducting is described.
6. gas pipeline self-closing valve according to claim 5, it is characterised in that: the baffle is located at the actuator
Side far from cam, the actuator are equipped with the first idler wheel, and the side of first idler wheel is against the baffle
Side on, first idler wheel can be rolled around along the side of the baffle.
7. gas pipeline self-closing valve according to claim 1, it is characterised in that: one end of the valve rod is equipped with the second rolling
Wheel, the side of second idler wheel are against on the cam surface, and second idler wheel can be along the cam surface back and forth
It rolls.
8. gas pipeline self-closing valve according to claim 1, it is characterised in that: the core assembly further include spool,
Seal cap and the second return spring；The spool is mounted in the valve body, and the spool is equipped with axially directed hole, institute
The valve rod stated cooperates in the axially directed hole；The seal cap is connected on the other end of the valve rod, described
Seal cap be used to seal the valve body air inlet pipe inner end；Second return spring covers outside the valve rod,
One end of second return spring is against on the end face of spool, and the other end of second return spring is against the one of the valve rod
On end.
9. gas pipeline self-closing valve according to claim 8, it is characterised in that: the spool is logical equipped with multiple axial directions
Stomata.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820626199.2U CN208487249U (en) | 2018-04-28 | 2018-04-28 | Gas pipeline self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820626199.2U CN208487249U (en) | 2018-04-28 | 2018-04-28 | Gas pipeline self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208487249U true CN208487249U (en) | 2019-02-12 |
Family
ID=65252566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820626199.2U Active CN208487249U (en) | 2018-04-28 | 2018-04-28 | Gas pipeline self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208487249U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413091A (en) * | 2018-04-28 | 2018-08-17 | 苏州福特曼机器人系统有限公司 | Gas pipeline self-closing valve |
| CN110748678A (en) * | 2019-11-01 | 2020-02-04 | 苏州福特曼机器人系统有限公司 | Natural gas self-closing valve |
-
2018
- 2018-04-28 CN CN201820626199.2U patent/CN208487249U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413091A (en) * | 2018-04-28 | 2018-08-17 | 苏州福特曼机器人系统有限公司 | Gas pipeline self-closing valve |
| CN110748678A (en) * | 2019-11-01 | 2020-02-04 | 苏州福特曼机器人系统有限公司 | Natural gas self-closing valve |
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