CN201310663Y - Anti-freezing type swing check valve - Google Patents
Anti-freezing type swing check valve Download PDFInfo
- Publication number
- CN201310663Y CN201310663Y CNU2008202278670U CN200820227867U CN201310663Y CN 201310663 Y CN201310663 Y CN 201310663Y CN U2008202278670 U CNU2008202278670 U CN U2008202278670U CN 200820227867 U CN200820227867 U CN 200820227867U CN 201310663 Y CN201310663 Y CN 201310663Y
- Authority
- CN
- China
- Prior art keywords
- valve
- swing check
- valve body
- check valve
- freezing
- 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
Links
Landscapes
- Check Valves (AREA)
Abstract
The utility model relates to a hydraulic control valve, in particular to an anti-freezing type swing check valve, which solves the problem that existing swing check valves are easy to burst by freezing under low-temperature situations. The anti-freezing type swing check valve comprises a valve body, a valve cover and a valve clack arranged on the inlet of the valve body, wherein the valve clack is rotationally connected with the valve body through a rotation shaft, and a through-hole close to the bottom of the valve body is opened on the valve clack. The hydraulic control valve has simple structure and convenient use, can effectively solve the anti-freezing problems of existing swing check valves, and is the first choice product of valves in severe cold areas.
Description
Technical field
The utility model relates to hydraulic control valve, is specially a kind of anti-freeze type Swing check valve.
Background technique
Swing check valve is a kind of start-stop device of connecting or blocking the pipeline medium of controlling, and is applicable to various pipelines big, medium caliber.Existing Swing check valve comprises valve body, valve gap, is arranged at the flap of valve body inlet, and flap is rotationally connected by rotating shaft and valve body, and the flap of safety check is opened under fluid pressure action, and fluid flows to outlet side from suction side.When suction side pressure was lower than outlet side, flap was closed under factor effects such as fluid pressure difference, gravity own automatically in case the fluid stopping body flows backwards.And the defective of existing Swing check valve is: at severe cold area, Swing check valve very easily freezes by bursting by freezing because of water residual in the valve body or liquid.For this reason, solve the antifreeze problem that has Swing check valve now and just seem particularly necessary.
Summary of the invention
The utility model provides a kind of anti-freeze type Swing check valve in order to solve the problem of existing Swing check valve easy bursting by freezing under low temperature condition.
The utility model is to adopt following technological scheme to realize: the anti-freeze type Swing check valve, and comprise valve body, valve gap, be arranged at the flap of valve body inlet, flap is rotationally connected by rotating shaft and valve body, has on the flap near the through hole bottom the valve body.
Concrete working procedure is: after valve was stopped using, water or liquid residual in the check valve body can be discharged valve body by the through hole on the flap, prevented that water or the liquid accumulated from freezing in valve body, thereby prevented that safety check is by bursting by freezing.
The utility model is simple in structure, and is easy to use, can effectively solve the antifreeze problem of existing Swing check valve, is the best first-selected product that severe cold area is used valve.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1-valve body, 2-valve gap, 3-flap, 4-through hole, 5-rotating shaft.
Embodiment
The anti-freeze type Swing check valve comprises valve body 1, valve gap 2, is arranged at the flap 3 of valve body 1 inlet, and flap 3 is rotationally connected by rotating shaft 5 and valve body 1, has the through hole 4 near valve body 1 bottom on the flap 3.During concrete enforcement, 2-10mm is generally got in the aperture of through hole 4, and decide according to the active force of the model of safety check and water hammer in the aperture, and model and water hammering power are more little, and the aperture is more little.Through hole 4 numbers are got 1 or 2, when the safety check operating ambient temperature is low, can open a plurality of through holes 4.
Claims (1)
1, a kind of anti-freeze type Swing check valve, comprise valve body (1), valve gap (2), be arranged at the flap (3) of valve body (1) inlet, flap (3) is rotationally connected by rotating shaft (5) and valve body (1), it is characterized in that: have the through hole (4) near valve body (1) bottom on the flap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202278670U CN201310663Y (en) | 2008-12-06 | 2008-12-06 | Anti-freezing type swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202278670U CN201310663Y (en) | 2008-12-06 | 2008-12-06 | Anti-freezing type swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310663Y true CN201310663Y (en) | 2009-09-16 |
Family
ID=41107916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202278670U Expired - Fee Related CN201310663Y (en) | 2008-12-06 | 2008-12-06 | Anti-freezing type swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310663Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344032A (en) * | 2014-11-13 | 2015-02-11 | 福建南方路面机械有限公司 | Freeze protection check valve for liquid delivery pipeline |
| CN104405934A (en) * | 2014-11-13 | 2015-03-11 | 福建南方路面机械有限公司 | Liquid conveying system capable of preventing frost cracking of pipeline |
-
2008
- 2008-12-06 CN CNU2008202278670U patent/CN201310663Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344032A (en) * | 2014-11-13 | 2015-02-11 | 福建南方路面机械有限公司 | Freeze protection check valve for liquid delivery pipeline |
| CN104405934A (en) * | 2014-11-13 | 2015-03-11 | 福建南方路面机械有限公司 | Liquid conveying system capable of preventing frost cracking of pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104675374A (en) | Unconventional CO2 fracturing site operation technology | |
| CN201310663Y (en) | Anti-freezing type swing check valve | |
| CN201487322U (en) | Check valve with valve plate slow closure function | |
| CN101876380A (en) | Low-resistance slow-closure type check valve | |
| CN101915471B (en) | Hydraulic pressure type hot water recovery unit | |
| CN204253951U (en) | A kind of antifreezing check valve for liquid transmission pipeline | |
| CN210318668U (en) | Horizontal non-return device | |
| CN202946833U (en) | Water eliminating hammer device | |
| CN104344032B (en) | For the antifreezing check valve of liquid transmission pipeline | |
| CN201739577U (en) | Fire-fighting check valve | |
| CN202733070U (en) | Check valve capable of reducing water hammer pressure | |
| CN106763934B (en) | Double-drive quick-closing lifting type non-return and stop combined valve | |
| CN203202313U (en) | One-way valve with water attack prevention function | |
| CN202273276U (en) | Overpressure-prevention ultra-high building fire fighting water supply system | |
| CN207195820U (en) | A kind of delayed on-off non-return valve | |
| CN102818051A (en) | Check valve capable of reducing pressure of water hammer | |
| CN202792497U (en) | Normal pressure water storage water heater | |
| CN207569276U (en) | A kind of valve stops integral valve | |
| CN202883447U (en) | Seal washing structure for sand pump halting | |
| CN106015660A (en) | Quick closing check valve | |
| CN101929487B (en) | Automatic reset electro-hydraulic device | |
| CN201281133Y (en) | Liquid controlled non-return butterfly valve | |
| CN201513569U (en) | Large-diameter normal open hydraulic control stop valve | |
| CN204756037U (en) | Check valve of waterproof hammer | |
| CN205896290U (en) | Fast closed check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090916 Termination date: 20100106 |