CN201894793U - Drip-proof check valve used in water mist fire extinguishing system - Google Patents
Drip-proof check valve used in water mist fire extinguishing system Download PDFInfo
- Publication number
- CN201894793U CN201894793U CN2010206319696U CN201020631969U CN201894793U CN 201894793 U CN201894793 U CN 201894793U CN 2010206319696 U CN2010206319696 U CN 2010206319696U CN 201020631969 U CN201020631969 U CN 201020631969U CN 201894793 U CN201894793 U CN 201894793U
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- CN
- China
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- valve body
- extinguishing system
- water mist
- mist fire
- check valve
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
- Check Valves (AREA)
Abstract
The utility model relates to the field of fire fighting, and discloses a drip-proof check valve used in a water mist fire extinguishing system, which is characterized by comprising an upper valve body and a lower valve body that are connected with each other through threads, wherein the upper valve body and the lower valve body are respectively provided with a central flow channel, the central flow channel of the upper valve body is internally and sequentially provided with a valve core, a valve rod and a bracket, the bracket props against the lower valve body, the valve rod is matched with the center of the bracket in a sliding way, and a spiral spring propping against the bracket is sheathed on the valve rod.
Description
Technical field
The utility model relates to the fire-fighting fire extinguishing field, particularly a kind of fine water mist fire-extinguishing system antidrip check valve.
Background technology
Along with the further investigation of people to fire extinguishing system, fine water mist fire-extinguishing system has progressively substituted Kazakhstan alkyl halide and water sprinkling fire-distinguishing system, and is used widely by people institute, but also there is its limitation in fine mist fire-fighting.Fine water mist fire-extinguishing system is when opening work, and whole system is the enclosed space, but system in the moment of closing, the pressure of pipeline inner high voltage water sharply reduces, and remaining water can flow out by fine mist spray head and produces weeping in the pipeline.
Summary of the invention
Shower nozzle water clock problem when closing for solving fine water mist fire-extinguishing system, the purpose of this utility model is to provide a kind of fine water mist fire-extinguishing system antidrip check valve, installs near shower nozzle.
To achieve the above object of the invention, the utility model adopts following technical scheme to be achieved.
A kind of fine water mist fire-extinguishing system antidrip check valve, it is characterized in that, comprise the upper valve body and the following valve body that are threaded, upper valve body and following valve body all have center flow channels, in the center flow channels of upper valve body, be disposed with spool, valve rod and support, described support is against following valve body, and described valve rod and carriage center are slidingly matched, and are set with the helical spring against support on the valve rod.
Characteristics of the present utility model are: described spool and upper valve body are cone match.The contact-making surface of described upper valve body and following valve body is provided with sealing ring.
In the utility model, be disposed with spool, valve rod and support in the center flow channels of upper valve body, support is against following valve body, and valve rod and carriage center are slidingly matched, and are set with the helical spring against support on the valve rod.When fire-fighting fire extinguishing, water under high pressure flows into from upper valve body, promotes the relative support rectilinear motion with valve rod of spool, opens check valve, and helical spring produces elastic force against support simultaneously; When closing water under high pressure, valve rod and spool are under helical spring effect, and the inlet rectilinear motion of upper valve body is closed check valve relatively, prevents water clock.
Description of drawings
Below in conjunction with the description of drawings and the specific embodiment the utility model is described in further details.
Fig. 1 is the structural representation of a kind of fine water mist fire-extinguishing system of the present utility model with the antidrip check valve; Among the figure: 1, upper valve body; 2, following valve body; 3, sealing ring; 4, spool; 5, helical spring; 6, valve rod; 7, support.
The specific embodiment
Referring to Fig. 1, for a kind of fine water mist fire-extinguishing system antidrip check valve of the present utility model, select stainless steel for use, mainly form by upper valve body 1, following valve body 2, spool 4, valve rod 6, support 7, helical spring 5 and a plurality of sealing ring 3.Wherein, upper valve body 1 and following valve body 2 all have center flow channels, following valve body 2 is connected by the internal thread in the center flow channels of external screw thread and upper valve body 1, spool 4, valve rod 6, support 7 are positioned at the center flow channels of upper valve body 1 successively, and support 7 is against the following end face of valve body 2, and spool 4, valve rod 6 are fixedly connected, support 7 has centre bore, valve rod 6 runs through centre bore, cooperates with support 7 central slide, and valve rod 6 can drive spool 4 and move along support 7 central line; And be set with the helical spring 5 against support 7 on the valve rod 6, the pretightning force of helical spring 5 can make valve rod 6 drive spool 4 away from support 7, closes check valve.
Spool 4 is a cone match with upper valve body 1, realizes closing of valve, and the rectilinear motion to spool 4 has guide effect simultaneously.In order to reach sealing effectiveness better, be set with the O RunddichtringO on the spool 4, also be provided with the O RunddichtringO at the contact-making surface of upper valve body 1 and following valve body 2.
When fine water mist fire-extinguishing system is opened, water under high pressure is entered by the center flow channels of the upper valve body of this check valve, water in the pipeline since the effect of hydraulic pressure the spool of check valve is pushed downwards, helical spring compression simultaneously, make between spool and the upper valve body and produce the slit, water under high pressure from then on slit enters, and the support of flowing through enters shower nozzle again through the center flow channels outflow of valve body down.When system closing, helical spring is upheld, and the hydraulic pressure in the pipeline sharply reduces, and deficiency is so that produce the slit between the spool of check valve and the upper valve body, and the water that accumulates in the pipeline can not enter shower nozzle by check valve, thereby has solved the water clock problem of shower nozzle.
Claims (3)
1. fine water mist fire-extinguishing system antidrip check valve, it is characterized in that, comprise the upper valve body and the following valve body that are threaded, upper valve body and following valve body all have center flow channels, in the center flow channels of upper valve body, be disposed with spool, valve rod and support, described support is against following valve body, and described valve rod and carriage center are slidingly matched, and are set with the helical spring against support on the valve rod.
2. fine water mist fire-extinguishing system antidrip check valve according to claim 1 is characterized in that described spool and upper valve body are cone match.
3. fine water mist fire-extinguishing system antidrip check valve according to claim 1 is characterized in that, the contact-making surface of described upper valve body and following valve body is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206319696U CN201894793U (en) | 2010-11-25 | 2010-11-25 | Drip-proof check valve used in water mist fire extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206319696U CN201894793U (en) | 2010-11-25 | 2010-11-25 | Drip-proof check valve used in water mist fire extinguishing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201894793U true CN201894793U (en) | 2011-07-13 |
Family
ID=44252713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206319696U Expired - Lifetime CN201894793U (en) | 2010-11-25 | 2010-11-25 | Drip-proof check valve used in water mist fire extinguishing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201894793U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206562A (en) * | 2013-04-09 | 2013-07-17 | 北京康斯特仪表科技股份有限公司 | Follow-up one-way valve, gas supply controlling mechanism and gas supply controlling method |
| CN109837704A (en) * | 2017-11-24 | 2019-06-04 | 青岛海尔洗衣机有限公司 | A kind of tube head of Anti-drip and washing machine using the tube head |
| CN109958798A (en) * | 2017-12-14 | 2019-07-02 | 浙江易达汽车零部件有限公司 | A kind of check valve |
| CN110623518A (en) * | 2018-06-21 | 2019-12-31 | 佛山市顺德区美的电热电器制造有限公司 | Stewing and steaming device |
| CN112501876A (en) * | 2019-09-16 | 2021-03-16 | 青岛海尔洗衣机有限公司 | Water inlet device of washing machine and washing machine |
-
2010
- 2010-11-25 CN CN2010206319696U patent/CN201894793U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206562A (en) * | 2013-04-09 | 2013-07-17 | 北京康斯特仪表科技股份有限公司 | Follow-up one-way valve, gas supply controlling mechanism and gas supply controlling method |
| CN109837704A (en) * | 2017-11-24 | 2019-06-04 | 青岛海尔洗衣机有限公司 | A kind of tube head of Anti-drip and washing machine using the tube head |
| CN109958798A (en) * | 2017-12-14 | 2019-07-02 | 浙江易达汽车零部件有限公司 | A kind of check valve |
| CN110623518A (en) * | 2018-06-21 | 2019-12-31 | 佛山市顺德区美的电热电器制造有限公司 | Stewing and steaming device |
| CN112501876A (en) * | 2019-09-16 | 2021-03-16 | 青岛海尔洗衣机有限公司 | Water inlet device of washing machine and washing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110713 |
|
| CX01 | Expiry of patent term |