CN209309403U - Extinction using gas selector valve - Google Patents
Extinction using gas selector valve Download PDFInfo
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- CN209309403U CN209309403U CN201821987608.8U CN201821987608U CN209309403U CN 209309403 U CN209309403 U CN 209309403U CN 201821987608 U CN201821987608 U CN 201821987608U CN 209309403 U CN209309403 U CN 209309403U
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Abstract
The utility model discloses a kind of extinction using gas selector valve, including upper valve body, the valve deck being arranged at the top of the upper valve body, the lower valve body that the upper valve body lower end is set, the intracorporal differential pressure valve of the lower valve is set, the upper valve side is arranged in unlatching secondary valve, the valve rod that is arranged in inside the differential pressure valve；The upper valve body inner wall is provided with first annular boss, sliding is provided with piston between the top of the upper valve body and the upper end of first annular boss, there are gap, the gaps to communicate with the pneumatic channel for opening secondary valve for the upper surface of the piston and first annular boss；One end of the valve rod is embedded in inside the differential pressure valve, and the other end passes vertically through first annular boss and is fixedly connected with the piston；Reset spring is provided between the lower end and the differential pressure valve of the first annular boss.A kind of extinction using gas selector valve of the utility model has the advantages such as small in size, structure is simple, assembly is easy, cracking pressure is low, reliability is high.
Description
Technical field
The utility model relates to fire fighting gas fire-fighting technique field, in particular to a kind of extinction using gas selector valve.
Background technique
Selector valve is an important component in gas extinguishing system, be mounted on collect pipeline and guard plot fire extinction pipeline it
Between, for controlling the on-off of fire-fighting fire extinguishing gas long-distance sand transport.In combination distribution fire extinguishing system, each guard plot is necessary
It is equipped with a corresponding selector valve, when there is fire signal sending in guard plot, fire-extinguishing bottle quilt corresponding with guard plot
Starting, gas successively open the container value on corresponding selector valve and fire-extinguishing bottle along starting pipe, extinguishing chemical are released,
Extinguishing chemical reaches manifold trunk along high-pressure hose, then reaches the corresponding guard plot that fire occurs by selector valve and put out a fire.
Under normal circumstances, selector valve should automatically turn on after system is connected to fire signal.But in the prior art, choosing is opened
It is needed most of when selecting valve using external force or the external gas pressure, and relatively high to starting pressure requirements.Choosing used at present
Select the technologies such as valve is big with volume, high production cost, cracking pressure height, poor reliability, external structure are complicated, assembly difficulty is big
Disadvantage.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of extinction using gas selector valve, has small in size, knot
The advantages such as structure is simple, assembly is easy, cracking pressure is low, high reliablity and processing cost are low.
In order to achieve the above object, the following technical solution is provided:
A kind of extinction using gas selector valve according to the present utility model, including upper valve body, is arranged at the top of the upper valve body
Valve deck, the lower valve body that the upper valve body lower end is arranged in, setting are in the intracorporal differential pressure valve of the lower valve, setting in the upper valve
Open secondary valve, the valve rod being arranged in inside the differential pressure valve in body side；The upper valve body inner wall is provided with first annular convex
Platform, sliding is provided with piston between the top of the upper valve body and the upper end of the first annular boss, the piston with it is described
There are gap, the gaps to communicate with the pneumatic channel for opening secondary valve for the upper surface of first annular boss；The valve rod
One end is embedded in inside the differential pressure valve, and the other end, which passes vertically through the first annular boss and fixes with the piston, to be connected
It connects；Reset spring is provided between the lower end and the differential pressure valve of the first annular boss；The side of the lower valve body is set
It is equipped with and its internal extinguishing chemical entrance being connected to；The bottom of the lower valve body is provided with to be exported with its internal extinguishing chemical being connected to.
A kind of extinction using gas selector valve according to the present utility model, one end of the reset spring and first annular boss
By being welded to connect, the other end and the differential pressure valve pass through welded connecting for lower end.
A kind of extinction using gas selector valve according to the present utility model, the course of work is: secondary valve, external pipeline are opened in starting
In driving gas by opening the pneumatic channel of secondary valve, into the gap between first annular boss and piston, to push away
Piston moves upwards, and piston driving valve rod moves upwards, and valve rod is further driven to differential pressure valve and overcomes reset spring downward
Elastic force and open selector valve, then extinguishing chemical enters selection valve body from extinguishing chemical entrance, and spurts from extinguishing chemical outlet to external and disappear
In anti-pipeline.
Preferably, the side wall lower ends of the upper valve body are internally provided with air passage；It is described to open the pneumatic of secondary valve
Channel includes interconnected horizontal pneumatic channel and vertical pneumatic channel, and the outer end of the horizontal pneumatic channel is provided with hand
Dynamic opening handle, inside are embedded with telescopic rod, and the manually opened handle is for pushing and pulling the telescopic rod in horizontal pneumatic channel
It is moved forward and backward, the air passage is connected to the horizontal pneumatic channel.
A kind of extinction using gas selector valve according to the present utility model, in the outer end of the horizontal pneumatic channel for opening secondary valve
Wall is provided with internal screw thread, and the connecting pin of the manually opened handle connection expansion link is provided with external screw thread, the external screw thread and institute
Internal screw thread is stated to match.When rotating clockwise manually opened handle, the telescopic rod moves forward the outlet for sealing air passage
Mouthful；When rotary manual opening handle counterclockwise, the telescopic rod, which moves backward, connects air passage and the horizontal pneumatic channel
It is logical.
A kind of extinction using gas selector valve according to the present utility model, it is manual using emergency when pneumatic unlatching can not start
The mode of unlatching opens selector valve, and extinguishing chemical gas is as driving gas when meeting an urgent need manually opened, air passage and the secondary valve of unlatching
Pneumatic channel connection to form driving gas passage when meeting an urgent need manually opened, rotary manual opening handle counterclockwise makes
The telescopic rod is shunk, then the outlet of air passage is connected to the pneumatic channel for opening secondary valve, so that extinguishing chemical be made to pass through air passage
Into the pneumatic channel for opening secondary valve, the gap between piston and first annular boss is traveled further into, pushes piston motion.
A kind of extinction using gas selector valve according to the present utility model, since the air passage is in upper valve body side wall lower ends
Internal direct machine-shaping, has the advantage that structure is simpler, assemble flow is more simplified, not only avoids emergency and opens manually
The leakage of driving gas caused by the external aeration pipeline of enabling, and aeration pipe outside Load materials are also ad save, it reduces
Economic cost.
Preferably, the end of the one end of the telescopic rod far from the manually opened handle is coniform.
A kind of extinction using gas selector valve according to the present utility model, starts choosing by the way of pneumatically opening under normal circumstances
Valve is selected, then the driving gas passage for meeting an urgent need manually opened is enclosed, and the telescopic rod is far from described manually opened handle one end
End be arranged to it is coniform, the more conducively described telescopic rod far from the manually opened handle one end seal air passage go out
Mouthful.
Preferably, the differential pressure valve outer wall, the upper valve body bottom and the lower valve body inner wall form cavity, institute
It states cavity to be connected to the extinguishing chemical entrance, and is connected to the air passage.
A kind of extinction using gas selector valve according to the present utility model, extinguishing chemical gas are directly entered chamber by extinguishing chemical entrance
In vivo, after selector valve is opened, extinguishing chemical gas, which is exported from cavity in by extinguishing chemical, sprays or enters external extinguishing chemical
Pipeline；When starting emergency is manually opened, extinguishing chemical gas, which is entered from cavity in by air passage, opens the pneumatic of secondary valve
Channel.
Preferably, the lower end of the outer wall of the upper valve body is provided with external screw thread, the upper end of the inner wall of the lower valve body
It is provided with internal screw thread, the internal screw thread matches with the external screw thread.
Selection valve body is divided into upper valve body and lower valve body, two valves by a kind of extinction using gas selector valve according to the present utility model
Body is connected through a screw thread and uses seal with O ring, and this structure is easily assembled and overhauls, and ensure that leakproofness.
Preferably, the inner wall of the lower valve body is provided with the second annular convex platform；The differential pressure valve upper end is provided with
First annular shoulder, the first annular shoulder is slided along the inner wall of the upper valve body, and passes through seal with O ring；The pressure difference
Valve is provided with the second annular shoulder close to lower end, and the diameter of second annular shoulder is greater than the straight of the first annular shoulder
Diameter；The bottom of the differential pressure valve is provided with baffle, is provided with O in the space between the baffle and second annular shoulder
Shape circle, and sealed by the O-ring and second annular convex platform；Second annular convex platform is for being clamped second ring
Shape shoulder.
A kind of extinction using gas selector valve according to the present utility model, the first annular shoulder are slided along the inner wall of upper valve body
It is sealed in the process by O-ring and inner wall, can prevent from entering upper valve body lower part into the intracorporal extinguishing chemical gas of lower valve body cavity
In space, it is difficult to open and puts out a fire so as to avoid the selector valve as caused by the extinguishing chemical gas for entering upper valve body lower space
Agent cannot be utilized efficiently.Since the diameter of the second annular shoulder is greater than the diameter of first annular shoulder, so under differential pressure valve
The strong area of side pressure is greater than upper end pressure area, and in same atmospheric pressure, the gross pressure of differential pressure valve is downward, is conducive to pressure difference
The reset of valve；And due to the presence of pressure difference, when pneumatically opening, valve inner pressure dissipation reaches at the both ends of differential pressure valve
To the purpose for reducing cracking pressure.The baffle of differential pressure valve bottom setting is for preventing O-ring from falling off downwards.Selector valve not by
When unlatching, the second annular shoulder is stuck in the second annular convex platform upper end, and by seal with O ring, for preventing chamber is intracorporal from going out
Fiery agent enters extinguishing chemical exit passageway.
Preferably, the inside of the differential pressure valve offers first through hole, the bottom end of the valve rod is pierced by downwards institute
It states first through hole and is fixed by the bottom end of nut and the differential pressure valve；The inside of the piston offers the second through-hole, institute
The top for stating valve rod sequentially passes through the inside of the reset spring, the first annular boss and second through-hole, and passes through
Nut is fixedly connected with the piston.
A kind of extinction using gas selector valve according to the present utility model, the bottom end and top of the valve rod are respectively arranged with outer spiral shell
Line, the external screw thread match with corresponding nut respectively.The piston vertical cross section is concave character type, and the bottom end of recess portion offers
Second through-hole, then it is fixed within the recess to pass through second through-hole for the top of the valve rod.The piston is along upper valve body
It is sealed in wall sliding process by O-ring and inner wall, the driving gas in the gap between first annular boss and piston can be prevented
Body enters the upper valve body inner space of top land, further prevents driving gas in the gap due to sealing bad and nothing
Method pushes piston.The valve rod is used for respectively with the inner wall of the inner wall of the through-hole and first annular boss by seal with O ring
Ensure that the driving air seal in the gap between first annular boss and piston, due to O-ring radial seal, can be eliminated
Using end face seal to the compression disrepair phenomenon of sealing element, to achieve the purpose that improve reliability.The reset spring and valve
Bar is built in selector valve body, and it is more compact, reasonable to make selector valve overall structure, to reach the mesh for reducing selection valve volume
's.
Preferably, being provided with venthole on the valve deck.
A kind of extinction using gas selector valve according to the present utility model, the venthole are upper valve body holes identical with atmosphere,
Conducive to piston upward sliding.
Preferably, the upper end of the piston is provided with the first cushion.
A kind of extinction using gas selector valve according to the present utility model, first cushion is for preventing piston along upper valve body
Inner wall sliding when and the lower end surface of valve deck directly collide, while having the function of buffering.
Preferably, the upper end of the first annular shoulder is provided with the second cushion.
A kind of extinction using gas selector valve according to the present utility model, second cushion is for preventing first annular shoulder
It directly collides when along the inner wall sliding of upper valve body with first annular boss lower surface, while playing the role of buffering.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structure principle chart of the extinction using gas selector valve of the utility model embodiment；
Fig. 2 is the side block diagram of the extinction using gas selector valve of the utility model embodiment.
Appended drawing reference respectively indicates: 1- upper valve body, 2- piston, 3- valve deck, 4- lower valve body, 5- differential pressure valve, and 6- resets bullet
Spring, 7- open secondary valve, 8- valve rod, the first annular boss of 9-, 10- air passage, the second annular shoulder of 11-, 12- baffle, 13- chamber
Body, the manually opened handle of 14-, the second annular convex platform of 15-, the first cushion of 16-, 17-O shape circle, 18- venthole, C- extinguishing chemical
Gas access, D- extinguishing chemical gas vent.
Specific embodiment
Unless otherwise defined, all technical terms used in the utility model embodiment all have and those skilled in the art
Normally understood identical meaning.To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with attached
Figure is described in further detail the utility model embodiment.
With reference to Fig. 1 and Fig. 2, embodiment according to the present utility model proposes a kind of extinction using gas selector valve, including upper valve body
1, the valve deck 3 that 1 top of upper valve body is arranged in, is arranged in the lower valve lower valve body 4 that 1 lower end of upper valve body is arranged in
Differential pressure valve 5 in body 4, the valve unlatching that 1 side of upper valve body is set secondary valve 7, be arranged in inside the differential pressure valve 5
Bar 8；1 inner wall of upper valve body is provided with first annular boss 9, the top of the upper valve body 1 and the first annular boss 9
It is slided between upper end and is provided with piston 2, there are gap, the gaps for the upper surface of the piston 2 and the first annular boss 9
It is communicated with the pneumatic channel for opening secondary valve 7；One end of the valve rod 8 is embedded in inside the differential pressure valve 5, and the other end is perpendicular
The excessively described first annular boss 9 of direct puncture is simultaneously fixedly connected with the piston 2；The lower end of the first annular boss and the pressure difference
Reset spring 6 is provided between valve 5；The side of the lower valve body 4 is provided with and its internal extinguishing chemical entrance being connected to；It is described
The bottom of lower valve body 4 is provided with to be exported with its internal extinguishing chemical being connected to.
In the embodiment above, one end of the reset spring 6 and the lower end of first annular boss 9, which pass through, is welded to connect,
The other end and the differential pressure valve 5 pass through welded connecting.
In the embodiment above, the course of work of selector valve is: secondary valve 7, the driving gas in external pipeline are opened in starting
By opening the pneumatic channel of secondary valve 7, into the gap between first annular boss 9 and piston 2, thus push piston 2 to
Upper movement, piston 2 are moved upwards with ovable valve stem 8, and valve rod 8 is further driven to the elastic force that differential pressure valve 5 overcomes reset spring 6 downward
And open selector valve, then extinguishing chemical enters selection valve body from extinguishing chemical entrance, and spurts from extinguishing chemical outlet to external extinguishing pipe
In road.
A kind of embodiment according to the present utility model, the side wall lower ends of the upper valve body 1 are internally provided with air passage 10；
The pneumatic channel for opening secondary valve 7 includes interconnected horizontal pneumatic channel and vertical pneumatic channel, and the level is pneumatic
The outer end in channel is provided with manually opened handle 14, and inside is embedded with telescopic rod, and the manually opened handle 14 is for pushing and pulling institute
It states telescopic rod to be moved forward and backward in horizontal pneumatic channel, the air passage 10 is connected to the horizontal pneumatic channel.
In the embodiment above, the outer end inner wall of the horizontal pneumatic channel for opening secondary valve 7 is provided with internal screw thread, described
The connecting pin of manually opened 14 connection expansion link of handle is provided with external screw thread, and the external screw thread matches with the internal screw thread, when
When rotating clockwise manually opened handle 14, the telescopic rod moves forward the gas outlet for sealing air passage 10；When rotation counterclockwise
When changing hands dynamic opening handle 14, the telescopic rod, which moves backward, is connected to air passage 10 with the horizontal pneumatic channel.
In the embodiment above, when pneumatic unlatching can not start, selector valve is opened in such a way that emergency is manually opened,
Extinguishing chemical gas as driving gas when meeting an urgent need manually opened, air passage 10 be connected to the pneumatic channel for opening secondary valve 7 thus
Driving gas passage when meeting an urgent need manually opened is formed, rotary manual opening handle 14 counterclockwise shrinks the telescopic rod, then
The outlet of air passage 10 is connected to the pneumatic channel for opening secondary valve 7, so that entering extinguishing chemical by air passage 10 opens secondary valve 7
Pneumatic channel, travel further into the gap between piston 2 and first annular boss 9, piston 2 pushed to move.
In the embodiment above, due to the direct machine-shaping in inside that the air passage 10 is in 1 side wall lower ends of upper valve body,
Advantage simpler with structure, assemble flow is more simplified not only avoids manually opened aeration pipe outside of meeting an urgent need
The leakage of driving gas caused by road, and aeration pipe outside Load materials are also ad save, reduce economic cost.
A kind of embodiment according to the present utility model, the end of the one end of the telescopic rod far from the manually opened handle
It is coniform.
In the embodiment above, start selector valve by the way of pneumatically opening under normal circumstances, then meet an urgent need manually opened
Driving gas passage is enclosed, the telescopic rod be arranged to far from the end of described manually opened handle one end it is coniform,
One end far from the manually opened handle of the more conducively described telescopic rod seals the outlet of air passage 10.
A kind of embodiment according to the present utility model, 5 outer wall of differential pressure valve, 1 bottom of the upper valve body and it is described under
4 inner wall of valve body forms cavity 13, and the cavity 13 is connected to the extinguishing chemical entrance C, and is connected to the air passage 10.
In the embodiment above, extinguishing chemical gas is directly entered in cavity 13 by extinguishing chemical entrance C, when selector valve is opened
Afterwards, extinguishing chemical gas exports D ejection by extinguishing chemical from 13 in of cavity or enters external extinguishing chemical pipeline；When starting is met an urgent need
When manually opened, extinguishing chemical gas enters the pneumatic channel for opening secondary valve 7 from 13 in of cavity by air passage 10.
The lower end of a kind of embodiment according to the present utility model, the outer wall of the upper valve body 1 is provided with external screw thread, under described
The upper end of the inner wall of valve body 4 is provided with internal screw thread, and the internal screw thread matches with the external screw thread.
In the embodiment above, selection valve body is divided into upper valve body 1 and lower valve body 4, two valve bodies are connected through a screw thread and adopt
With seal with O ring, this structure is easily assembled and overhauls, and ensure that leakproofness.
A kind of embodiment according to the present utility model, the inner wall of the lower valve body 4 are provided with the second annular convex platform 15；It is described
5 upper end of differential pressure valve is provided with first annular shoulder, and the first annular shoulder is slided along the inner wall of the upper valve body 1, and is led to
Cross seal with O ring；The differential pressure valve 5 is provided with the second annular shoulder 11 close to lower end, second annular shoulder 11 it is straight
Diameter is greater than the diameter of the first annular shoulder；The bottom of the differential pressure valve 5 is provided with baffle 12, the baffle 12 with it is described
O-ring is provided in space between second annular shoulder 11, and close by the O-ring and second annular convex platform 15
Envelope；Second annular convex platform 15 is for being clamped second annular shoulder 11.
In the embodiment above, the first annular shoulder along the inner wall sliding process of upper valve body 1 by O-ring with it is interior
Wall sealing, can prevent the extinguishing chemical gas entered in 4 cavity 13 of lower valve body from entering in the space of 1 lower part of upper valve body, to avoid
Selector valve caused by extinguishing chemical gas as entering upper valve body 1 lower space is difficult to open cannot efficient benefit with extinguishing chemical
With.Since the diameter of the second annular shoulder 11 is greater than the diameter of first annular shoulder, so the lower end pressure area of differential pressure valve 5
Greater than upper end pressure area, in same atmospheric pressure, the gross pressure of differential pressure valve 5 is downward, is conducive to answering for differential pressure valve 5
Position；And due to the presence of pressure difference, when pneumatically opening, valve inner pressure dissipation reaches reduction and opens at the both ends of differential pressure valve 5
Open the purpose of pressure.The baffle 12 of 5 bottom of differential pressure valve setting is for preventing O-ring from falling off downwards.It is not turned in selector valve
When, the second annular shoulder 11 is stuck in 15 upper end of the second annular convex platform, and by seal with O ring, for preventing in cavity 13
Extinguishing chemical enters the extinguishing chemical outlet channel D.
A kind of embodiment according to the present utility model, the inside of the differential pressure valve 5 offer first through hole, the valve rod
8 bottom end is pierced by downwards the first through hole and is fixed by the bottom end of nut and the differential pressure valve 5；The inside of the piston
The second through-hole is offered, the top of the valve rod 8 sequentially passes through the inside of the reset spring 6, first annular 9 and of boss
Second through-hole, and be fixedly connected by nut with the piston 2.
In the embodiment above, the bottom end and top of the valve rod 8 are respectively arranged with external screw thread, the external screw thread respectively with
Corresponding nut matches.2 vertical cross section of piston is concave character type, and the bottom end of recess portion offers the second through-hole, then the valve
It is fixed within the recess that the top of bar 8 passes through second through-hole.The piston 2 leads to along 1 inner wall sliding process of upper valve body
It crosses O-ring 17 and inner wall seals, can prevent the driving gas in the gap between first annular boss 9 and piston 2 from entering piston 2
1 inner space of upper valve body at top further prevents the driving gas in the gap that can not push work due to sealing bad
Plug 2.The valve rod 8 is respectively with the inner wall of the inner wall of the through-hole and first annular boss 9 by seal with O ring, for ensureing
The driving air seal, due to O-ring radial seal, can be eliminated and be adopted in the gap between first annular boss 9 and piston 2
With end face seal to the compression disrepair phenomenon of sealing element, to achieve the purpose that improve reliability.The reset spring 6 and valve rod
8 are built in selector valve body, and it is more compact, reasonable to make selector valve overall structure, to achieve the purpose that reduce selection valve volume.
A kind of embodiment according to the present utility model is provided with venthole 18 on the valve deck 3.
In the embodiment above, the venthole 18 is the hole identical with atmosphere of upper valve body 1, is conducive to 2 upward sliding of piston.
A kind of embodiment according to the present utility model, the upper end of the piston 2 are provided with the first cushion 16.
In the embodiment above, first cushion 16 be used for prevent piston 2 along upper valve body 1 inner wall sliding when and valve
The lower end surface of lid 3 is directly collided, while having the function of buffering.
The upper end of a kind of embodiment according to the present utility model, the first annular shoulder is provided with the second cushion.
In the embodiment above, second cushion is used to prevent first annular shoulder from sliding along the inner wall of upper valve body 1
When directly collide with first annular 9 lower end surface of boss, while playing the role of buffering.
The foregoing is merely the illustrated examples of the utility model, are not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of extinction using gas selector valve characterized by comprising upper valve body (1) is arranged at the top of the upper valve body (1)
Valve deck (3), setting the upper valve body (1) lower end lower valve body (4), differential pressure valve in the lower valve body (4) is set
(5), the valve rod (8) internal in the differential pressure valve (5) in the unlatching pair valve (7) of the upper valve body (1) side, setting is set；
Upper valve body (1) inner wall is provided with first annular boss (9), the top of the upper valve body (1) with it is described first annular
Sliding is provided with piston (2) between the upper end of boss (9), and the upper surface of the piston (2) and the first annular boss (9) is stayed
There is gap, the gap is communicated with the pneumatic channel for opening secondary valve (7)；
One end of the valve rod (8) is embedded in the differential pressure valve (5) inside, and the other end passes vertically through the first annular boss
(9) and with the piston (2) it is fixedly connected；
Reset spring (6) are provided between the lower end and the differential pressure valve (5) of the first annular boss；
The side of the lower valve body (4) is provided with and its internal extinguishing chemical entrance being connected to；The bottom of the lower valve body (4) is arranged
Have and is exported with its internal extinguishing chemical being connected to.
2. a kind of extinction using gas selector valve according to claim 1, which is characterized in that under the side wall of the upper valve body (1)
End is internally provided with air passage (10)；
The pneumatic channel for opening secondary valve (7) includes interconnected horizontal pneumatic channel and vertical pneumatic channel, the water
The outer end of flat pneumatic channel is provided with manually opened handle (14), and inside is embedded with telescopic rod, the manually opened handle (14)
It is moved forward and backward in horizontal pneumatic channel for pushing and pulling the telescopic rod, the air passage (10) and the horizontal pneumatic channel connect
It is logical.
3. a kind of extinction using gas selector valve according to claim 2, which is characterized in that the telescopic rod is far from described manual
The end of one end of opening handle is coniform.
4. a kind of extinction using gas selector valve according to claim 2, which is characterized in that differential pressure valve (5) outer wall, institute
It states upper valve body (1) bottom and the lower valve body (4) inner wall forms cavity (13), the cavity (13) and the extinguishing chemical entrance connect
It is logical, and be connected to the air passage (10).
5. a kind of extinction using gas selector valve according to claim 1, which is characterized in that the outer wall of the upper valve body (1)
Lower end is provided with external screw thread, and the upper end of the inner wall of the lower valve body (4) is provided with internal screw thread, the internal screw thread and the external screw thread
Match.
6. a kind of extinction using gas selector valve according to claim 1, which is characterized in that the inner wall of the lower valve body (4) is set
It is equipped with the second annular convex platform (15)；
Differential pressure valve (5) upper end is provided with first annular shoulder, and the first annular shoulder is interior along the upper valve body (1)
Wall sliding, and pass through seal with O ring；
The differential pressure valve (5) is provided with the second annular shoulder (11) close to lower end, the diameter of second annular shoulder (11)
Greater than the diameter of the first annular shoulder；
The bottom of the differential pressure valve (5) is provided with baffle (12), the baffle (12) and second annular shoulder (11) it
Between space in be provided with O-ring, and sealed by the O-ring and second annular convex platform (15)；
Second annular convex platform (15) is for being clamped second annular shoulder (11).
7. a kind of extinction using gas selector valve according to claim 1, which is characterized in that the inside of the differential pressure valve (5)
First through hole is offered, the bottom end of the valve rod (8) is pierced by downwards the first through hole and by nut and the differential pressure valve
(5) bottom end is fixed；
The inside of the piston offers the second through-hole, and the top of the valve rod (8) sequentially passes through the interior of the reset spring (6)
Portion, the first annular boss (9) and second through-hole, and be fixedly connected by nut with the piston (2).
8. a kind of extinction using gas selector valve according to claim 1, which is characterized in that be provided on the valve deck (3) logical
Stomata (18).
9. a kind of extinction using gas selector valve according to claim 1, which is characterized in that the upper end of the piston (2) is arranged
There are the first cushion (16).
10. a kind of extinction using gas selector valve according to claim 6, which is characterized in that the first annular shoulder it is upper
End is provided with the second cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821987608.8U CN209309403U (en) | 2018-11-29 | 2018-11-29 | Extinction using gas selector valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821987608.8U CN209309403U (en) | 2018-11-29 | 2018-11-29 | Extinction using gas selector valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209309403U true CN209309403U (en) | 2019-08-27 |
Family
ID=67674827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821987608.8U Active CN209309403U (en) | 2018-11-29 | 2018-11-29 | Extinction using gas selector valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209309403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701311A (en) * | 2019-09-27 | 2020-01-17 | 陕西新竹防务设备有限公司 | Normally closed selector valve device for fire extinguisher |
-
2018
- 2018-11-29 CN CN201821987608.8U patent/CN209309403U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701311A (en) * | 2019-09-27 | 2020-01-17 | 陕西新竹防务设备有限公司 | Normally closed selector valve device for fire extinguisher |
| CN110701311B (en) * | 2019-09-27 | 2022-04-29 | 陕西新竹防务设备有限公司 | Normally closed selector valve device for fire extinguisher |
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Effective date of registration: 20230427 Address after: 710075 No. 571, Zhoukang Road, Zhouling Street Office, Qinhan New City, Xixian New District, Xi'an City, Shaanxi Province Patentee after: Xi'an Hsinchu defense emergency Technology Co.,Ltd. Address before: 710075, No. 17, science and technology road, Xi'an, Shaanxi Patentee before: XI'AN XINZHU DEFENSE TECHNOLOGY CO.,LTD. |