CN207687367U - Gas emergency cut-off valve - Google Patents
Gas emergency cut-off valve Download PDFInfo
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- CN207687367U CN207687367U CN201721919639.5U CN201721919639U CN207687367U CN 207687367 U CN207687367 U CN 207687367U CN 201721919639 U CN201721919639 U CN 201721919639U CN 207687367 U CN207687367 U CN 207687367U
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- locating part
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- valve rod
- unlock piece
- emergency cut
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Abstract
The utility model provides gas emergency cut-off valve, belongs to valve technology field.It solves the problems, such as that existing safety device for gas cooker use reliability is low.This gas emergency cut-off valve, including valve body, the valve rod and locating part that are set in valve body, the locating part can be close to the valve rod side and carries out axial limiting to valve rod, stop valve further includes unlock piece and hot-wire coil, the unlock piece is separated with the locating part and the two is disposed adjacent, and the unlock piece can be mobile to locating part direction under the electromagnetic force of the hot-wire coil and can make impact force of the locating part far from valve rod to locating part application.This gas emergency cut-off valve has the advantages that use reliability, safety and stability are high.
Description
Technical field
The utility model belongs to valve technology field, is related to a kind of stop valve, more particularly to a kind of applied to fuel gas pipeline
In for carrying out the valve of gas emergency cut-off.
Background technology
Combustion gas is a kind of current more common energy, and can release heat by the combustibility of combustion gas makes for people
With, and it is also very high for the security requirement during combustion gas use.Gas emergency cut-off valve is in gas pipeline engineering
Safe corollary apparatus is applied in gas transmission and distribution field, and pipeline cut-out can be realized when fuel gas transmission occurs abnormal, ensures combustion gas
The safety for conveying and using.
For example, people devise a kind of safety device for gas cooker and applied Chinese patent (its application No. is：
97211524.2；Its notification number is：CN2301628Y), the executing agency in the safety device includes valve body, can block air flue
Valve rod, dynamic iron and electromagnet, open up in the middle part of valve rod fluted, and shape and operating position are opposite with the shape of dynamic iron and position
It answers.In use, pulling valve rod to move up with handle, dynamic iron is embedded under the action of the spring in the groove on valve rod for the executing agency,
Valve rod is blocked, then blast tube is decontroled in the working end of valve rod, and combustion gas normally conveys；When fuel gas transmission occurs abnormal, electromagnet
Coil be powered, by the dynamic iron being stuck in stem groove be sucked out, be allowed to disengage the control to valve rod, allow valve rod in the spring that saves up strength
The lower rapid reset of effect, cuts off blast tube, to ensure with gas safety.
But it is had the following disadvantages during the use of the executing agency of above-mentioned safety device for gas cooker：Executing agency
It when middle valve body is in the conduction state, moves in the groove on iron insertion valve rod, valve rod is under the elastic force effect for the spring that saves up strength to dynamic iron
Apply downward active force so that it is dynamic that great stiction is generated between iron and recess sidewall, dynamic iron is sucked out for electromagnet
Groove causes great resistance, or even the case where there are the suction that electromagnet generates be not enough to that dynamic iron is sucked out, and then causes to hold
Row mechanism can not cut off blast tube, and the reliability that safety device uses is relatively low.
Invention content
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of gas emergency cut-off
Valve, the technical problem to be solved is that the reliabilities for how improving blast tube cut-out.
The purpose of this utility model can be realized by following technical proposal：
Gas emergency cut-off valve, including valve body, the valve rod and locating part that are set in valve body, the locating part can be to institute
It states valve rod side and carries out axial limiting close to and to valve rod, which is characterized in that stop valve further includes unlock piece and hot-wire coil,
The unlock piece is separated with the locating part and the two is disposed adjacent, and the unlock piece can be in the electromagnetic force of the hot-wire coil
It can make impact force of the locating part far from valve rod to the movement of locating part direction under effect and to locating part application.
For this gas emergency cut-off valve in normal use, locating part carries out axial limiting to valve rod, prevents valve rod into it
Blast tube in extreme direction movement and stop valve body, keeps blast tube in the conduction state.It is cut when emergency needs occur
When disconnected fuel gas transmission, be powered to hot-wire coil, electromagnetic force applied to unlock piece by the hot-wire coil after being powered, unlock piece by
Stationary state becomes motion state and to the movement of locating part direction until unlock piece impinges upon on locating part, and locating part is unlocked
It far from valve rod and can be released to the axial limiting of valve rod after the impact force of part so that valve rod can move freely and to cut off combustion gas logical
Road.Here, unlock piece and it is not affected by the active force of valve rod, the frictional resistance being subject to is smaller, and the electromagnetic force of hot-wire coil can be more
Easily driving unlock piece movement, is not in the hypodynamic situation of electromagnetism, meanwhile, by the unlock piece of movement to locating part into
The mode that row is hit makes locating part movement and far from valve rod, relative to directly by electromagnetic force dynamic iron is sucked out in the way of come
It says, the demand to electromagnetic force substantially reduces, and unlock difficulty also reduces, and improves the axial limiting and stop valve for releasing locating part
The reliability of internal blast tube.
In above-mentioned gas emergency cut-off valve, the unlock piece and locating part are oppositely arranged and are respectively arranged at the valve
The both sides of bar, the unlock piece have the shock portion of protrusion towards the end face of above-mentioned locating part one end, and the shock portion can extend through
Above-mentioned valve rod simultaneously impinges upon one end end of the locating part towards unlock piece.Unlock piece and locating part are oppositely disposed in valve rod
Both sides so that the limit of locating part is not interfered, and limit effect is more reliable, and unlock piece can protect the shock of the face of locating part
Card hits the stability being detached from, and then ensures the reliability unlocked to valve rod.
In above-mentioned gas emergency cut-off valve, the quantity in the shock portion is two and two shock portions are respectively from described
The both sides of valve rod bypass valve rod, and two shock portions can offset towards one end end of the locating part with the locating part
It leans on.Two shock portions are bypassed from the both sides of valve rod respectively so that valve rod can be limited and led to the position in two shock portions
To, ensure shock portion it is opposite with the position of locating part, and two shock portions with locating part against, it is ensured that locating part is hit
Stress is more uniform when hitting, and unlock effect is more stable.
As another situation, in above-mentioned gas emergency cut-off valve, the valve rod side, which is run through, offers impingement holes,
The shock portion can pass through the impingement holes and lean with above-mentioned locating part and shock portion is with the place of leaning on locating part
Plane.According to different topology requirements, also can then be hit directly in valve rod side through the impingement holes passed through for shock portion are opened up
Portion can directly be hit with locating part face, and impact effects are stablized.
In above-mentioned gas emergency cut-off valve, release lever, the locating part, unlock piece are also equipped on the valve body
And release lever is sequentially distributed along same rectilinear direction, the inner end of the release lever is connected with above-mentioned unlock piece, unlocks hand
The valve body is stretched out in the outer end of handle.When hot-wire coil, which breaks down, to fail, it is manually operable the release lever for stretching out valve body, control
Unlock piece processed is close to locating part and locating part is pushed to release to the axial limiting of valve rod, not only can Electronic control, but also can control manually
System, improves the reliability used.
In above-mentioned gas emergency cut-off valve, stop valve further includes unlock spring and magnet assemblies, the unlock bullet
Spring acts on above-mentioned unlock piece and unlock piece can be made to be moved to the locating part direction, and the unlock piece is overcoming unlock spring
Elastic force act on when being moved to the direction far from above-mentioned locating part, the magnet assemblies, which can apply unlock piece, magnetic attraction and makes solution
Latch fitting remains stationary.When not unlocking, unlock piece is pulled out to the direction far from locating part, unlock piece overcomes unlock spring
Elastic force movement and it is gradually close to magnet assemblies, the magnetic attraction of magnet assemblies also constantly increases, when unlock piece is moved to design
When magnetic-adsorption point, magnetic attraction can be greater than or equal to the elastic force of unlock spring, and unlock piece is the state for keeping compressed spring；It needs
When unlock, apply electromagnetic force from hot-wire coil to unlock piece so that the sum of the elastic force of electromagnetic force and unlock spring is more than group of magnets
The magnetic attraction of part, then unlock piece to locating part direction move.Here, the active force applied to unlock piece is mainly carried by unlock spring
For electromagnetic force is only used for abolishing the equilibrium state of unlock piece, enables unlock piece under the elastic force effect of unlock spring to locating part
Direction is moved, and reduces the demand to electromagnetic force, triggering difficulty further decreases, and unlocks the moment spring force of springlock release
Bigger improves the reliability of unlock, meanwhile, it is sustainable that unlock piece is applied to limit under the elastic force effect of unlock spring
The active force of part movement improves impact force of the unlock piece to locating part, ensures the reliability that unlock piece unlocks to locating part.
In above-mentioned gas emergency cut-off valve, the magnet assemblies include permanent magnet and fixed core annular in shape, institute
The unlock piece can be limited by stating one end of fixed core.Guiding magnetic-adsorption point of the fixed core as permanent magnet, works as unlock
Part compression unlock spring move on to fixed core against when, the magnetic field force of fixed core can be more than the spring force of unlock spring, at this point, solution
Latch fitting can be steadily still at fixed core, prevent from being influenced the stationary state of unlock piece in valve body by other external force and causing to cut
Disconnected valve surprisingly closes valve.
In above-mentioned gas emergency cut-off valve, the valve rod side also has recessed groove, the locating part separate
The side of above-mentioned valve rod is provided with limit spring, and the locating part can stretch into the groove under the effect of the elastic force of limit spring
It is interior.Locating part is headed into groove by limit spring so that the side of locating part can lean with the side wall of groove, to real
For existing locating part to the axial limiting of valve rod, structure is relatively simple, easy to use.
In above-mentioned gas emergency cut-off valve, the groove is in a ring and its bottom surface is to outwardly protrude arc-shaped, institute
It is plane that locating part, which is stated, towards one end end face of valve rod, and the end face of the locating part can lean with the bottom surface of the groove.Limit
The end face of position part is plane, and groove floor is arcwall face, is between the two point contact, reduces frictional force so that unlock piece can
Preferably rush open locating part.
As another situation, in above-mentioned gas emergency cut-off valve, the valve rod side, which also has, to be outwardly protruded
Shoulder block, side of the locating part far from above-mentioned valve rod are provided with limit spring, and the locating part can be in the elastic force of limit spring
It is resisted against under effect on the side wall of valve rod and locating part can lean towards the side of the shoulder block with shoulder block.As needed, valve
One shoulder block also can be only set on bar, locating part is pressed on valve rod side wall by limit spring, and to valve rod side in limit
Shoulder block above part is stopped, you can realize the limit to valve rod axial position, it is simple in structure, and it is easy to use.
As another situation, in above-mentioned gas emergency cut-off valve, side of the locating part far from the valve rod
It is provided with limit handle, inner end and the locating part of the limit handle are connected, and the valve body, the limit are stretched out in the outer end for limiting handle
Position part can be resisted against the side of the valve rod under the drive of limit handle, and the valve rod side also has the gear outwardly protruded
Shoulder, and when locating part is resisted against on the side wall of valve rod, the locating part can lean towards the side of the shoulder block with shoulder block.
According to the difference of use demand, a limit handle can be also connected outside locating part, locating part is pushed by way of manual operation
Movement to valve rod to carry out axial limiting.
In above-mentioned gas emergency cut-off valve, the inner end of the valve rod is connected with the sealing that can be moved with valve rod, should
At the blast tube that sealing inner end can be resisted against in the valve body and cut off blast tube, the sealing outer end in valve body
Cavity is formed between wall and the cavity is connected with the air inlet of the valve body always.It is formed between sealing outer end and valve body
Cavity is connected with the air inlet of valve body always, i.e., combustion gas at sealing flow direction be from the outside to the core, i.e., it is interior when sealing
When the cut-out blast tube of end, acted on by the gaseous-pressure at valve body air inlet, the sealing effect of sealing will be more preferable.
Compared with prior art, this gas emergency cut-off valve has the following advantages：
1, this gas emergency cut-off valve releases locating part to valve rod by way of driving unlock piece to be hit to locating part
Axial limiting, unlock driving force require reduce, improve the reliability that stop valve uses.
2, using the elastic force for unlocking spring as predominant intermolecular forces, by the electromagnetic force of hot-wire coil for triggering, pass through the two
The driving to unlock piece is realized in cooperation, further reduced the electromagnetic force demand to hot-wire coil, can will at hot-wire coil
Power-on voltage is reduced to the Safety Extra Low Voltage of 9V~12V, relative to the non-security electricity for using 220V in fuel gas transmission pipeline
For the case where pressing electric arc that may be present or electric leakage and generating explosion, safety higher.
3, the fuel gas transmission direction in this gas emergency cut-off valve is the inside extreme direction in outer end in self sealss portion, and sealing
Outer end at be connected always with the air inlet of valve body, even if then causing combustion gas defeated after the pressure regulating valve fail in fuel gas transmission pipeline
Pressurization pressure increases, and also only the more can press the more tight to sealing will not cause to leak, improve sealing effect.In sealing inside and outside
Can design pressure difference balancing device, convenient for manually opened.
4, the quick action emergency valve of the prior art generally uses pure electromagnetic type structure, the side that valve rod is locked in the electromagnetic type structure
Formula is to directly adsorb on sufficiently bulky magnet, is adsorbed using the magnetic attraction of magnet, and unlock valve rod is unlocked by hot-wire coil
's.Here, it is inadequate to be easy to cause attractive holding force for magnetic attraction absorption, and while discharging requires voltage and current very high, and this combustion gas
The technology of quick action emergency valve is mechanical electric magnetic-type structure, and unlocking structure is mechanical connection, more stable compared to electromagnetic type structure, driving
Voltage is lower.And the stop valve of this mechanical electric magnetic-type is more conducive to apply on heavy caliber pressure pipeline, use is more stable.
Description of the drawings
Fig. 1 is schematic cross-sectional view when this gas emergency cut-off valve is opened.
Fig. 2 is the enlarged drawing at locating part when this gas emergency cut-off valve is opened.
Fig. 3 is the schematic cross-sectional view at another visual angle when this gas emergency cut-off valve is opened.
Fig. 4 is the schematic cross-sectional view for removing valve rod when this gas emergency cut-off valve is opened.
Fig. 5 is schematic cross-sectional view when this gas emergency cut-off valve is closed.
Fig. 6 is the enlarged drawing at locating part when this gas emergency cut-off valve is closed.
Fig. 7 is the schematic cross-sectional view at another visual angle when this gas emergency cut-off valve is closed.
In figure, 1, valve body；2, valve rod；2a, shoulder block；2b, groove；3, locating part；4, unlock piece；4a, shock portion；5, it is powered
Coil；6, release lever；7, spring is unlocked；8, magnet assemblies；9, limit spring；10, sealing；11, fixed core.
Specific implementation mode
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.
Embodiment one
As shown in Figure 1, this gas emergency cut-off valve includes valve body 1 and the valve rod being set in valve body 12, tool in valve body 1
There are the gas port of crossing that the air inlet of valve body 1 can be connected with gas outlet, the inner end of valve rod 2 to stretch into valve body 1 and be connected with sealing
Portion 10, the sealing 10 can move inwardly into valve rod 2 and be resisted against on gas port and made between the air inlet and gas outlet of valve body 1
It blocks, the outer end of valve rod 2 is connected with the operation handle that valve body 1 is stretched out in part.Between 1 inner wall of upside and valve body of sealing 10 also
It is connected always with the air inlet of valve body 1 with cavity and the cavity, cut-out spring is additionally provided in cavity, the cut-out spring pocket
It is located at 2 outside of valve rod and both ends is respectively acting on 1 inner wall of valve body and sealing 10, sealing 10 can be in the elastic force of cut-out spring
It moves down and was resisted against on gas port under effect.In the present embodiment, valve body 1 include have air inlet and gas outlet main body and
The shell being connected in main body, sealing 10 are flap.
As shown in Fig. 2, the side in shell positioned at valve rod 2 is additionally provided with the locating part 3 being in the form of a column and limit spring 9,
2 side of valve rod offers the groove 2b in circular ring shape, and the bottom surface of groove 2b is the arc surface outwardly protruded, and groove 2b is close to valve rod
The sides of 2 outer ends forms shoulder block 2a, and limit spring 9 is set between locating part 3 and the inner wall of shell, and locating part 3 is towards valve rod 2
The end face of one end is plane, can be caught in groove 2b and make end face and the groove of locating part 3 under the elastic force effect of limit spring 9
The bottom surface point contact of 2b, then the axial limiting to valve rod 2 is formed by way of the side of locating part 3 and shoulder block 2a.
Here, when locating part 3 and shoulder block 2a realize axial limiting against and to valve rod 2, the channel in main body is in open state.When
So, as needed, the shoulder block 2a of a protrusion can be also separately provided in 2 side of valve rod, not using shoulder block 2a as a part of groove 2b,
Also it can be leant by locating part 3 and shoulder block 2a to realize the axial limiting to valve rod 2.
Be additionally provided in shell be made of metal material in rod-shaped unlock piece 4, unlock spring 7, hot-wire coil 5 with
And magnet assemblies 8, unlock piece 4 and 3 coaxial line face of locating part are arranged and the two is respectively arranged at the both sides of valve rod 2, unlock bullet
7 both ends of spring lean with unlock piece 4 and inner walls respectively and unlock piece 4 can be to limit under the elastic force effect of unlock spring 7
The movement of position 3 direction of part, when unlock piece 4 is when compression unlock spring 7 is moved to the direction far from locating part 3, magnet assemblies 8 can be right
Unlock piece 4 applies magnetic attraction and makes 4 remains stationary of unlock piece, and when hot-wire coil 5 is powered, hot-wire coil 5 applies unlock piece 4
Electromagnetic force and the sum of the elastic force of unlock spring 7 be more than the magnetic attractions of magnet assemblies 8.In the present embodiment, magnet assemblies 8 include
Permanent magnet and the fixed core 11 that can guide permanent magnet field, which is in circular ring shape and one end can be indirect with unlock piece 4
Against to realize limit.Here, guiding magnetic-adsorption point of the fixed core 11 as permanent magnet, when unlock piece 4 compresses unlock spring 7
Move on to fixed core 11 against when, the magnetic field force at fixed core 11 can be more than the spring force of unlock spring 7 so that 4 energy of unlock piece
It is steadily still at fixed core 11 very much, prevents from being influenced the stationary state of unlock piece 4 in valve body 1 by other external force and causing to cut
Disconnected valve surprisingly closes valve.
As shown in Figure 3 and Figure 4, specifically, 2 side of valve rod and 4 position corresponding position of unlock piece are in flat, unlock piece 4
There is the shock portion 4a of protrusion, shock portion 4a can extend through valve rod 2 and impinge upon locating part 3 towards the end of 3 one end of locating part
Towards one end end of unlock piece 4.In the present embodiment, shock portion 4a is square, and quantity is two and two shock portion 4a
Respectively from the both sides of valve rod 2 it is flat from bypass valve rod 2, i.e., valve rod 2 be located at two shock portion 4a formed recess in, two are hit
Portion 4a is hit to lean with locating part 3 towards one end end of locating part 3.
One end end of the unlock piece 4 far from locating part 3 is also associated with release lever 6, the inner end of the release lever 6 and unlock
Part 4 is connected, and outer end is pierced by shell.In the present embodiment, it is separately connected on the shell at 6 outer end of operation handle and release lever
There is the outer cover for covering operation handle and release lever 6.
This gas emergency cut-off valve in normal use, locating part 3 be caught under the action of limit spring 9 in groove 2b and
By carrying out axial limiting to valve rod 2 against to realize with shoulder block 2a, preventing valve rod 2 mobile to its interior extreme direction and making sealing
Portion 10 cuts off the blast tube in valve body 1, keeps blast tube in the conduction state.At this point, unlock piece 4 is in compression unlock bullet
Spring 7 and the state being sucked as the fixed core 11 of magnetic circuit absorption point in magnet assemblies 8.
As shown in Fig. 5, Fig. 6 and Fig. 7, when generation emergency needs to cut off fuel gas transmission, hot-wire coil 5 is led to
Electricity applies electromagnetic force by the hot-wire coil 5 after being powered to unlock piece 4, because the sum of the elastic force of electromagnetic force and unlock spring 7 is more than magnetic
The magnetic attraction of iron component 8, then unlock piece 4 is to the movement of 3 direction of locating part, and in the process, the magnetic attraction of magnet assemblies 8 constantly subtracts
Small, under the elastic force effect of unlock spring 7, unlock piece 4 fast moves to locating part 3 and by two shock around valve rod 2
Portion 4a impinges upon the end of locating part 3, makes it by deviating from out of groove 2b after impact force and compress limit spring 9 to far from valve
The direction of bar 2 is moved, and the axial limiting to valve rod 2 is released.Then valve rod 2 and sealing 10 are under the elastic force effect of cut-out spring
Inside extreme direction is mobile and the inner end of sealing 10 is made to be resisted against crossing on gas port in main body, cuts off the blast tube in main body.
At this point, because the cavity of 10 upside of sealing is connected with the air inlet of main body always, even if the then pressure regulation in fuel gas transmission pipeline
Defective valve, the gaseous-pressure in pipeline increase, and sealing 10 remains to closely realize to mistake at the air inlet under the pressure of combustion gas
The sealing of gas port ensures the effect of fuel gas shutoff.
After trouble shooting, release lever 6 can be first passed through by operating personnel and pulls out unlock piece 4 so that unlock piece 4
Be no longer abut against on locating part 3, then locating part 3 limit spring 9 elastic force effect under tight abutment in the side of valve rod 2.Behaviour
Making personnel, pull operation handle pulls out valve rod 2 and sealing 10 again, until the position of groove 2b and 3 phase of locating part
Right, then locating part 3 is caught in groove 2b and carries out axial limiting to valve rod 2 again, and valve body 1 is kept to be in the state opened.This
In, do not pull out release lever 6 if any other staff and directly pull-up operation handle when, because locating part 3 is unlocked the blocking of part 4 can not
It is caught in the groove 2b of valve rod 2, then once loosing one's grip, valve rod 2 will move down again in the case where the elastic force of cut-out spring acts on and cut off combustion
Gas channel ensures safety.
When hot-wire coil 5, which breaks down, to fail, release lever 6 can be directly manually operated in operating personnel, i.e., to locating part 3
Release lever 6 is pressed in direction, and unlock piece 4 is close to locating part 3 under the action of unlocking the spring force of spring 7 and hits locating part
3, push locating part 3 to release the axial limiting to valve rod 2, stop valve can equally cut off the conveying of combustion gas, ensure that and close valve manually
Requirement.
Embodiment two
The technical solution of the present embodiment is roughly the same with embodiment one, the difference is that：
2 side of valve rod, which can directly be run through, offers impingement holes, the shock portion 4a of unlock piece 4 can directly through impingement holes and with
Locating part 3 leans and shock portion 4a and the place of leaning on locating part 3 are plane；Side of the locating part 3 far from valve rod 2 can not
Limit spring 9 is set, and a limit handle is set, inner end and the locating part 3 of the limit handle are connected, and the outer end for limiting handle is stretched
Go out valve body 1, locating part 3 can be resisted against the side of valve rod 2 under the drive of limit handle.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. gas emergency cut-off valve, including valve body (1), the valve rod (2) that is set in valve body (1) and locating part (3), the limit
Position part (3) can be close to the valve rod (2) side and to valve rod (2) progress axial limiting, which is characterized in that stop valve further includes
Unlock piece (4) and hot-wire coil (5), the unlock piece (4) is separated with the locating part (3) and the two is disposed adjacent, institute
Stating unlock piece (4) can be mobile to locating part (3) direction under the electromagnetic force of the hot-wire coil (5) and to locating part (3)
The impact force of the separate valve rod (2) of locating part (3) can be made by applying.
2. gas emergency cut-off valve according to claim 1, which is characterized in that the unlock piece (4) and locating part (3) phase
To being arranged and being respectively arranged at the both sides of the valve rod (2), end face of the unlock piece (4) towards above-mentioned locating part (3) one end
Shock portion (4a) with protrusion, the shock portion (4a) can extend through above-mentioned valve rod (2) and impinge upon the locating part (3) direction
One end end of unlock piece (4).
3. gas emergency cut-off valve according to claim 2, which is characterized in that the quantity of the shock portion (4a) is two
And two shock portions (4a) bypass valve rod (2) from the both sides of the valve rod (2) respectively, two shock portions (4a) are described in
One end end of locating part (3) can lean with the locating part (3).
4. gas emergency cut-off valve according to claim 2, which is characterized in that valve rod (2) side, which is run through, to be offered
Impingement holes, the shock portion (4a) can pass through the impingement holes and lean with above-mentioned locating part (3) and shock portion (4a) with limit
The place of leaning is plane on position part (3).
5. the gas emergency cut-off valve according to any one of Claims 1 to 4, which is characterized in that on the valve body (1)
Also be equipped with release lever (6), the locating part (3), unlock piece (4) and release lever (6) along same rectilinear direction successively
Distribution, inner end and the above-mentioned unlock piece (4) of the release lever (6) are connected, and the valve body is stretched out in the outer end of release lever (6)
(1)。
6. the gas emergency cut-off valve according to any one of Claims 1 to 4, which is characterized in that stop valve further includes
Unlock spring (7) and magnet (8), the unlock spring (7) act on above-mentioned unlock piece (4) and can make unlock piece (4) to
Locating part (3) direction movement, the unlock piece (4) act on to far from above-mentioned limit overcoming the elastic force of unlock spring (7)
When the direction movement of part (3), the magnet (8) can apply unlock piece (4) magnetic attraction and make unlock piece (4) remains stationary.
7. the gas emergency cut-off valve according to any one of Claims 1 to 4, which is characterized in that valve rod (2) side
Also there is recessed groove (2b), side of the locating part (3) far from above-mentioned valve rod (2) to be provided with limit spring (9), institute in portion
Stating locating part (3) can stretch under the effect of the elastic force of limit spring (9) in the groove (2b).
8. the gas emergency cut-off valve according to any one of Claims 1 to 4, which is characterized in that valve rod (2) side
Also there is the shoulder block (2a) outwardly protruded, side of the locating part (3) far from above-mentioned valve rod (2) to be provided with limit spring in portion
(9), the locating part (3) can be resisted against on the side wall of valve rod (2) and locating part (3) under the effect of the elastic force of limit spring (9)
It can lean towards the side of the shoulder block (2a) with shoulder block (2a).
9. the gas emergency cut-off valve according to any one of Claims 1 to 4, which is characterized in that the locating part (3)
Side far from the valve rod (2) is provided with limit handle, and inner end and the locating part (3) of the limit handle are connected, and limit handle
Outer end stretch out the valve body (1), the locating part (3) can be resisted against the side of the valve rod (2) under the drive of limit handle
Portion, valve rod (2) side also have the shoulder block (2a) outwardly protruded, and when locating part (3) is resisted against on the side wall of valve rod (2)
When, the locating part (3) can lean towards the side of the shoulder block (2a) with shoulder block (2a).
10. the gas emergency cut-off valve according to any one of Claims 1 to 4, which is characterized in that the valve rod (2)
Inner end be connected with and can be resisted against in the valve body (1) with the mobile sealing (10) of valve rod (2), sealing (10) inner end
Blast tube at and cut off blast tube, cavity and the sky are formed between sealing (10) outer end and valve body (1) inner wall
Chamber is connected with the air inlet of the valve body (1) always.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919639.5U CN207687367U (en) | 2017-12-29 | 2017-12-29 | Gas emergency cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721919639.5U CN207687367U (en) | 2017-12-29 | 2017-12-29 | Gas emergency cut-off valve |
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| Publication Number | Publication Date |
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| CN207687367U true CN207687367U (en) | 2018-08-03 |
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| CN201721919639.5U Active CN207687367U (en) | 2017-12-29 | 2017-12-29 | Gas emergency cut-off valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087564A (en) * | 2017-12-29 | 2018-05-29 | 上海雅肯电子科技有限公司 | Gas emergency cut-off valve |
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2017
- 2017-12-29 CN CN201721919639.5U patent/CN207687367U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087564A (en) * | 2017-12-29 | 2018-05-29 | 上海雅肯电子科技有限公司 | Gas emergency cut-off valve |
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