CN208107171U - A kind of selector valve for preventing valve body piston stuck - Google Patents
A kind of selector valve for preventing valve body piston stuck Download PDFInfo
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- CN208107171U CN208107171U CN201820522144.7U CN201820522144U CN208107171U CN 208107171 U CN208107171 U CN 208107171U CN 201820522144 U CN201820522144 U CN 201820522144U CN 208107171 U CN208107171 U CN 208107171U
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- valve body
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- intake duct
- air intake
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Abstract
A kind of selector valve for preventing valve body piston stuck mainly includes：Bonnet, bottom flange, valve body, core assembly and driving device；The core assembly includes piston, reset spring and end socket；The end socket includes fixed plug, cushion seal circle and capping, the fixed plug bottom connects reset spring, the reset spring other end is connect with lower valve body, the cushion seal circle is located between fixed plug and capping, this selector valve structure design science, good airproof performance, can prevent valve body piston stuck or inner pressure of air cylinder is too high to open.
Description
Technical field
The utility model relates to fire-extinguishing apparatus field more particularly to a kind of selector valves for preventing valve body piston stuck.
Background technique
Selector valve is a kind of common fire-extinguishing apparatus, and selector valve is mounted on header, and import is connect with header, outlet
It is connect with extinguishing chemical conveyance conduit.Selector valve is mainly used for controlling extinguishing chemical flow direction in combined distribution system, guarantees fire extinguishing
Agent enters the protection zone that fire occurs, and instructs when alarm issues fire extinguishing, is on valve release starting gas, and starting gas is logical
It crosses starting pipeline and opens corresponding selector valve and container value（Bottle valve）, extinguishing chemical is discharged, fire extinguishing is implemented.
There are the following problems for selector valve currently on the market：First, valve body and cylinder are split settings, and the two uses
It is threadedly coupled, when spool impacts, screw thread, which is squeezed, to deform, and seizure of piston is caused, if spool is with valve body using axial close
Envelope mode then needs higher air pressure that could open；Second, inner pressure of air cylinder is excessively high, in case of emergency occurs, and can not open
The case where.
Chinese patent CN106090396A discloses a kind of integral type selector valve, and cooperation can be connect with driving device, selection
Valve includes valve body, can be equipped with air inlet and air outlet in the piston and return unit that move in valve body, the valve body；The piston
It is sealedly attached in valve body, the first space, the air inlet and the first sky can be formed between valve interior wall at the top of the piston
Between be connected, the valve body be equipped with connection the first space and driving device first passage；In the lower part and valve body of the piston
Second space is formed between wall, the valve body is equipped with the second channel of connection second space and driving device；The piston bottom
Third space is formed between portion and valve body, equipped with buffer structure in the third space, the characteristics of the invention is that opening force is smaller,
Good seal performance；The invention is passed through gas using the first space, piston after entering second space into driving device and then gas
It moves downward, third space is communicated with atmospheric pressure plays buffering reset response, while buffer structure is equipped in third space.This
Kind selector valve, structure is more complicated, and dismounting and change is not easy.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies of the prior art and provide a kind of scientific structure design,
Good airproof performance, can prevent valve body piston stuck or inner pressure of air cylinder is too high to open.
To realize that the utility model provides following technical scheme：A kind of selector valve for preventing valve body piston stuck, it is main to wrap
It includes：Bonnet, bottom flange, valve body, core assembly and driving device；The bonnet, and bottom flange are located at the two of core assembly
End, the core assembly includes piston, reset spring and end socket；The piston base is recessed inwardly to form spacing zone, described multiple
Position spring is placed in spacing zone；The end socket includes fixed plug, cushion seal circle and capping, and the fixed plug bottom connection resets
Spring, the reset spring other end are connect with lower valve body, and the cushion seal circle is located between fixed plug and capping, and the capping is stretched
Enter bonnet, cushion seal circle center position is additionally provided with buffer air bag；The upper piston area and valve body form the first air pressure
Chamber, piston middle part form the second atmospheric pressure cavity with valve body, and piston lower portion and valve body form third atmospheric pressure cavity；The valve body and the first gas
Press the corresponding side wall of chamber to be equipped with the first air intake duct, valve body side wall corresponding with the second atmospheric pressure cavity equipped with second into
Air flue, valve body side wall corresponding with third atmospheric pressure cavity are equipped with third air intake duct, first air intake duct, the second air inlet
Not intercommunication between road and third air intake duct；The driving device includes air inlet air flue and is mounted on manually booting on air inlet air flue
Device, the air inlet air flue are connect with the first air intake duct, the second air intake duct and third air intake duct respectively.
Preferably, the manual start device is manual ball valve.
Preferably, the air inlet air flue and the first air intake duct junction are additionally provided with driving gas feed.Preferably, institute
It states cushion seal circle center to be recessed inwardly, material is rubber.
Preferably, the bonnet, and bottom flange inner wall are equipped with connection screw thread.
The usefulness of the utility model：First, valve body is all made of with bonnet, and bottom flange and is threadedly coupled, dismounting and change
It is convenient, while can effectively slow down end socket to upper using the end enclosure structure of fixed plug, cushion seal circle, buffer air bag and capping
The impact of valve deck prevents seizure of piston to prevent deformed threads；The design of simultaneous buffering air bag can protect cushion seal again
Circle increases the service life of cushion seal circle；The second, the second atmospheric pressure cavity can play buffering during piston moves up and down
Effect.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
In figure：1 be bonnet, 2 be bottom flange, 3 be valve body, 4 be core assembly, 4.1 be piston, 4.2 be reset spring,
4.3 be end socket, 4.3.1 be fixed plug, 4.3.2 be cushion seal circle, 4.3.3 be that capping, 4.3.4 are buffer air bags, 5 are drivings
Device, 5.1 be manual ball valve, 5.2 be air inlet air flue, 5.3 be driving gas feed, 6 be the first atmospheric pressure cavity, 6.1 be first into
Air flue, 7 be the second atmospheric pressure cavity, 7.1 be the second air intake duct, 8 be third atmospheric pressure cavity, 8.1 be third air intake duct.
Specific embodiment
A kind of selector valve for preventing valve body piston stuck mainly includes：Bonnet, 1, bottom flange 2, valve body 3, core assembly 4
With driving device 5；The bonnet, 1 and bottom flange 2 are located at the both ends of core assembly 4, the core assembly 4 include piston 4.1,
Reset spring 4.2 and end socket 4.3；4.1 bottom of piston is recessed inwardly to form spacing zone, and the reset spring 4.2 is placed in limit
In the area of position；The end socket 4.3 includes fixed plug 4.3.1, cushion seal circle 4.3.2 and capping 4.3.3, the fixed plug 4.3.1
Bottom connects reset spring 4.2, and 4.2 other end of reset spring is connect with lower valve body 2, and the cushion seal circle 4.3.2 is located at solid
Surely it fills between 4.3.1 and capping 4.3.3, the capping 4.3.3 protrudes into bonnet, 1, the center cushion seal circle 4.3.2
It is additionally provided with buffer air bag 4.3.4；4.1 top of piston and valve body 3 form the first atmospheric pressure cavity 6,4.1 middle part of piston and valve body 3
The second atmospheric pressure cavity 7 is formed, 4.1 lower part of piston and valve body 3 form third atmospheric pressure cavity 8；The valve body 3 and the first atmospheric pressure cavity 6 are opposite
The side wall answered is equipped with the first air intake duct 6.1, and the valve body 3 side wall corresponding with the second atmospheric pressure cavity 7 is equipped with the second air inlet
Road 7.1, the valve body 3 side wall corresponding with third atmospheric pressure cavity 8 are equipped with third air intake duct 8.1, first air intake duct
6.1, not intercommunication between the second air intake duct 7.1 and third air intake duct 8.1；The driving device 5 includes air inlet air flue 5.2 and installation
Manual start device on air inlet air flue 5.2, the air inlet air flue 5.2 respectively with the first air intake duct 6.1, the second air intake duct
7.1 and third air intake duct 8.1 connect, the manual start device is manual ball valve 5.1, the air inlet air flue 5.2 and first into
6.1 junction of air flue is additionally provided with driving gas feed 5.3, and the center cushion seal circle 4.3.2 is recessed inwardly, and material is rubber
Glue, the bonnet, 1 are equipped with connection screw thread with 2 inner wall of bottom flange.
This selector valve working principle：When selector valve is closed, the second atmospheric pressure cavity 7 is kept and extraneous consistent atmospheric pressure, prevents
Only do not opened in selector valve due to hypertonia；It is instructed when alarm issues fire extinguishing, is on valve release starting gas, opens
Body of taking offence enters the first atmospheric pressure cavity 6 by air inlet air flue 5.2, and air is pressed in the second atmospheric pressure cavity 7 and third atmospheric pressure cavity 8 at this time
Contracting, piston 4.1 move down, and end socket 4.3 is separated with bonnet, 1, and selector valve is opened；When needing to close selector valve, third gas
There is gas compressed that can push up piston 4.1 in pressure chamber 8, so that end socket 4.3 resets, the second atmospheric pressure cavity 7 is in piston 4.1
Can play the role of buffering during moving up and down, the second air intake duct 7.1 and third air intake duct 8.1 respectively with air inlet air flue
5.2 connections, to the second atmospheric pressure cavity 7 and third atmospheric pressure cavity 8 is inflated or equilibrium air pressure；Buffer air bag 4.3.4 can be prevented
Cushion seal circle 4.3.2 is deformed because air pressure is excessive, and can slow down impact when end socket 4.3 resets to bonnet, 1.
The utility model is not limited to a kind of choosing for preventing valve body piston stuck involved in above-mentioned specific embodiment
Valve is selected, those skilled in the art can also make a variety of variations accordingly, but any be equal with the utility model or similar
Variation should all cover in the range of the utility model claims.
Claims (5)
1. a kind of selector valve for preventing valve body piston stuck, it is characterised in that：Mainly include：Bonnet, bottom flange, valve body, valve
Core assembly and driving device；The bonnet, and bottom flange are located at the both ends of core assembly, and the core assembly includes piston, answers
Position spring and end socket；The piston base is recessed inwardly to form spacing zone, and the reset spring is placed in spacing zone；The end socket
Including fixed plug, cushion seal circle and capping, the fixed plug bottom connects reset spring, the reset spring other end and lower valve body
Connection, the cushion seal circle are located between fixed plug and capping, and bonnet, the cushion seal circle center are protruded into the capping
Position is additionally provided with buffer air bag；The upper piston area and valve body form the first atmospheric pressure cavity, and piston middle part forms the second gas with valve body
Chamber is pressed, piston lower portion and valve body form third atmospheric pressure cavity；Valve body side wall corresponding with the first atmospheric pressure cavity is equipped with first
Air intake duct, valve body side wall corresponding with the second atmospheric pressure cavity are equipped with the second air intake duct, the valve body and third atmospheric pressure cavity
Corresponding side wall is equipped with third air intake duct, not intercommunication between first air intake duct, the second air intake duct and third air intake duct；
The driving device includes air inlet air flue and the manual start device that is mounted on air inlet air flue, and the air inlet air flue is respectively with the
One air intake duct, the second air intake duct are connected with third air intake duct.
2. a kind of selector valve for preventing valve body piston stuck according to claim 1, it is characterised in that：It is described to manually boot
Device is manual ball valve.
3. a kind of selector valve for preventing valve body piston stuck according to claim 1, it is characterised in that：The air inlet air flue
Driving gas feed is additionally provided with the first air intake duct junction.
4. a kind of selector valve for preventing valve body piston stuck according to claim 1, it is characterised in that：The cushion seal
Circle center is recessed inwardly, and material is rubber.
5. a kind of selector valve for preventing valve body piston stuck according to claim 1, it is characterised in that：The bonnet, with
Bottom flange inner wall is equipped with connection screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820522144.7U CN208107171U (en) | 2018-04-13 | 2018-04-13 | A kind of selector valve for preventing valve body piston stuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820522144.7U CN208107171U (en) | 2018-04-13 | 2018-04-13 | A kind of selector valve for preventing valve body piston stuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208107171U true CN208107171U (en) | 2018-11-16 |
Family
ID=64117621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820522144.7U Active CN208107171U (en) | 2018-04-13 | 2018-04-13 | A kind of selector valve for preventing valve body piston stuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208107171U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561560A (en) * | 2018-04-13 | 2018-09-21 | 宜兴市锦辉铜材有限公司 | A kind of selector valve for preventing valve body piston stuck |
-
2018
- 2018-04-13 CN CN201820522144.7U patent/CN208107171U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561560A (en) * | 2018-04-13 | 2018-09-21 | 宜兴市锦辉铜材有限公司 | A kind of selector valve for preventing valve body piston stuck |
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