CN201739577U - Fire-fighting check valve - Google Patents
Fire-fighting check valve Download PDFInfo
- Publication number
- CN201739577U CN201739577U CN2010205094159U CN201020509415U CN201739577U CN 201739577 U CN201739577 U CN 201739577U CN 2010205094159 U CN2010205094159 U CN 2010205094159U CN 201020509415 U CN201020509415 U CN 201020509415U CN 201739577 U CN201739577 U CN 201739577U
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- CN
- China
- Prior art keywords
- valve
- fire
- valve plate
- safety check
- fighting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses a fire-fighting check valve, which comprise a valve body, a valve plate and a spring. A communication channel arranged in the valve body for communicating between both sides of the valve plate is opened and closed via a stop valve. The communication capability of both sides of the valve plate can be regulated by opening and closing of the stop valve, so as to weaken a water hammer, reduce water attack and increase discharge ability of pipelines.
Description
Technical field
The utility model relates to a kind of butterfly check valve, is mainly used in fire-fighting domain.
Background technique
Butterfly check valve is meant and relies on medium itself to flow and automatic open and close valve plate, is used for preventing the valve that medium flows backwards.When medium when direction flows in accordance with regulations, valve plate is unlocked by the effect of pressure medium; During medium counter flow, valve plate is in the effect of acting force of the spring and medium backpressure, the sealing surface driving fit of valve plate and valve seat and closing, thus reach the purpose that stops medium counter flow.
When safety check of the prior art has been applied to pressure piping, usually too quick because of turn on pump, termination of pumping, switch gate valve, the flow velocity of water is changed suddenly, thereby cause the alternate that pressure sharply raises and reduces, promptly cause the generation of water hammer.Water hammer effect has great destructiveness, and pressure can sharply increase to above normal pressure several times even tens times in the pipeline, can cause breaking of pipeline, and influence is produced and life.Pressure is too high, will cause breaking of pipe; Otherwise pressure is crossed the low collapsing that can cause pipe again, also can damage valve and fixed block.
The model utility content
The technical problems to be solved in the utility model provides a kind ofly can slacken water hammer, have drainage function, can get rid of water accumulation of pipeline after use, avoid water accumulation of pipeline to freeze and cause valve to open, even because expansion destroys the fire-fighting safety check of pipeline.
The utility model solves described problem by the following technical solutions:
A kind of fire-fighting safety check comprises valve body, valve plate and spring, is provided with one and is communicated with the passage of valve plate both sides in valve body, and adopt stop valve to open and close; Described valve plate is rotatably installed on the axle, and by spring compression; Described stop valve comprises valve seat, gland, valve shaft, connects cover and handle composition.
Owing in fire-fighting check valve body described in the utility model, be provided with the passage of connection valve plate both sides, then work as turn on pump, termination of pumping, the switch gate valve is too quick, when the flow velocity of water is changed suddenly, can open and close by revolving of stop valve, regulate the connection ability of the valve plate both sides of this safety check, to reach the effect that slackens water hammer, reduce the generation of water hammer, increased the drainage function of pipeline simultaneously, the conventional check valves ubiquity uses back draining row unclean, easily seeping phenomenon, especially in winter, it is not in place that this will be directed at valve opening, can't open, even the bad pipeline that expands, fire-fighting safety check described in the utility model has thoroughly solved this problem.
Description of drawings
With embodiment the utility model is described in further detail with reference to the accompanying drawings below;
Fig. 1 is the structural representation of fire-fighting safety check described in the utility model.
Among the figure: 1, valve body; 2, valve plate; 3, axle; 4, spring; 5, passage; 6, stop valve; 7, valve seat; 8, gland; 9, valve shaft; 10, connect cover; 11, handle.
Embodiment
As shown in Figure 1, a kind of fire-fighting safety check comprises valve body 1, valve plate 2 and spring 4, is provided with one and is communicated with the passage 5 of valve plate 2 both sides in valve body 1, and adopt stop valve 6 to open and close; Described valve plate 2 is rotatably installed on the axle 3, and is compressed by spring 4; Described stop valve 6 comprises valve seat 7, gland 8, valve shaft 9, connects cover 10 and handle 11.
Too quick when turn on pump, termination of pumping, switch gate valve, when the flow velocity of water is changed suddenly, can open stop valve and be communicated with the valve plate both sides by revolving, thereby can reach the effect that slackens water hammer, reduce the generation of water hammer.
Can also directly open stop valve, reach the purpose that outlet one side pressure release is discharged water, when using winter, can can't not open or the generation of the accident of spalling pipeline because of water accumulation of pipeline causes valve by the stop valve passway.
Claims (3)
1. a fire-fighting safety check comprises valve body (1), valve plate (2) and spring (4), it is characterized in that: be provided with one and be communicated with the passage (5) of valve plate (2) both sides in valve body (1), and adopt stop valve (6) to open and close.
2. fire-fighting safety check according to claim 1 is characterized in that: described valve plate (2) is rotatably installed on the axle (3), and is compressed by spring (4).
3. fire-fighting safety check according to claim 1 is characterized in that: described stop valve (6) comprises valve seat (7), gland (8), valve shaft (9), connects cover (10) and handle (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205094159U CN201739577U (en) | 2010-08-30 | 2010-08-30 | Fire-fighting check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205094159U CN201739577U (en) | 2010-08-30 | 2010-08-30 | Fire-fighting check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739577U true CN201739577U (en) | 2011-02-09 |
Family
ID=43554852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205094159U Expired - Fee Related CN201739577U (en) | 2010-08-30 | 2010-08-30 | Fire-fighting check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739577U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613200A (en) * | 2015-01-23 | 2015-05-13 | 苏州巨瀚阀门有限公司 | Drainage type check valve |
| CN106246967A (en) * | 2016-09-09 | 2016-12-21 | 北京高安诺技术开发有限公司 | A kind of drainage check valve |
| WO2020248089A1 (en) * | 2019-06-10 | 2020-12-17 | 宁津美华工业有限公司 | Deluge alarm valve |
-
2010
- 2010-08-30 CN CN2010205094159U patent/CN201739577U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613200A (en) * | 2015-01-23 | 2015-05-13 | 苏州巨瀚阀门有限公司 | Drainage type check valve |
| CN106246967A (en) * | 2016-09-09 | 2016-12-21 | 北京高安诺技术开发有限公司 | A kind of drainage check valve |
| WO2020248089A1 (en) * | 2019-06-10 | 2020-12-17 | 宁津美华工业有限公司 | Deluge alarm valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANXI HAOLIFA MACHINERY MANUFACTURING CO., LTD. Free format text: FORMER OWNER: BEIJING HAOLI VALVE MANUFACTURING CO., LTD. Effective date: 20140805 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 102602 DAXING, BEIJING TO: 043000 LINFEN, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140805 Address after: 043000 want Shanxi Province Economic and Technological Development Zone Houma road Jinmao Industrial Park Building No. 3 Patentee after: SHANXI HAOLI VALVE MACHINERY MANUFACTURING CO., LTD. Address before: 102602 Beijing city Daxing District yufazhen Yu Shun No. six Patentee before: BEIJING HAOLI VALVE MANUFACTURING CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20190830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |