CN202176766U - Check and stop valve - Google Patents
Check and stop valve Download PDFInfo
- Publication number
- CN202176766U CN202176766U CN2011202592852U CN201120259285U CN202176766U CN 202176766 U CN202176766 U CN 202176766U CN 2011202592852 U CN2011202592852 U CN 2011202592852U CN 201120259285 U CN201120259285 U CN 201120259285U CN 202176766 U CN202176766 U CN 202176766U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve plate
- rod
- plate
- blind hole
- 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 - Lifetime
Links
Images
Landscapes
- Check Valves (AREA)
Abstract
The utility model provides a check and stop valve, which comprises a valve body, a valve cover arranged on the valve body, a valve rod, a valve plate separated from the valve rod and a spring. The valve plate moves vertically along the valve rod under the effect of the spring. A blind hole with a certain depth is arranged at the upper portion of the valve plate, the valve rod is inserted in the blind hole in the valve plate, and movable connection of the valve rod and the valve plate is formed; or the valve rod is inserted in the periphery of the valve plate provided with the blind hole, and the movable connection of the valve rod and the valve plate is formed. The valve plate clings to a sealing face of the valve body. The check and stop valve has the advantages of being particularly suitable for working environments with back flow pollution and capable of being opened forcibly depending on self-pressure of fluid when a pipeline has pressure and closed depending on spring force when the pipeline loses pressure. By means of rotation of a hand wheel, the fact that the check and stop valve is in an open or close state can be ensured, and the check and stop valve has all the functions of a normal check valve.
Description
Technical field
The utility model relates to a kind of non-return stop valve that blocks or connect pipeline medium stream, and this non-return stop valve can be opened when pipeline has pressure medium, and the automatic quick closedown non-return of ability effectively prevents medium back flow when the pipeline decompression.
Background technique
Existing its valve plate of known stop valve of having behaved is fixedly connected with valve rod; Must rely on artificial the realization to close after opening connection pipeline MEDIA FLOW; Common stop valve is in opening state when the pipeline decompression, and recirculation water gets into the pipeline upper reaches easily and pollutes when pipeline take place to reflux.The occasion of a large amount of at present employing stop valves does not install backflow preventer additional, and there is the situation of pipeline decompression often in industry, is easy to cause backflow pollution like this.
Summary of the invention
The utility model is in order to address the above problem, to its objective is a kind of non-return stop valve to be provided, and when the pipeline decompression, relies on the rapid automatic-closing valve of effect of spring force, avoids producing backflow pollution.
For realizing the model utility purpose; The technological scheme that the utility model adopts provides a kind of non-return stop valve; This valve includes valve gap, valve rod, the valve plate that separates with valve rod and the spring on valve body, the valve body, and valve rod moves up and down valve plate in the spring action lower edge, and wherein: said valve plate top has the blind hole of certain depth; Valve rod inserts among the blind hole in the valve plate, forms the flexible connection of valve rod and valve plate; Or valve rod establishes the valve plate periphery of blind hole in inserting, and forms the flexible connection of valve rod and valve plate, and valve plate is close on the sealing surface of valve body.
The effect of the utility model is to use the special working environment that backflow pollution is arranged that adapts to of this non-return stop valve, when pipeline has pressure, relies on the pressure bursts Open valve of fluid self, when the pipeline decompression, relies on the spring force throttle down.Utilize the rotation of handwheel can guarantee that valve is in unlatching or closed condition, possesses all functions of common stop valve.
Description of drawings
Fig. 1 is valve rod and a kind of structural representation of valve plate of the utility model;
Fig. 2 is the valve rod and the another kind of structural representation of valve plate of the utility model.
Among the figure:
1, valve body 2, valve plate 3, spring 4, valve rod
5, valve gap 6, handwheel
Embodiment
In conjunction with accompanying drawing and embodiment the non-return stop valve structure of the utility model is explained.
The non-return stop valve structure of the utility model is, this valve includes valve gap 5, valve rod 4, the valve plate 2 that separates with valve rod 4 and the spring 3 on valve body 1, the valve body 1, and valve plate 2 moves up and down at spring 3 effect lower edge valve rods 4.Said valve 2 tops have the blind hole of certain depth, among the blind hole that valve rod 4 inserts in the valve plate 2, form the flexible connection of valve rod 4 and valve plate 2; Or another kind of structure is valve plate 2 peripheries of establishing blind hole in valve rod 4 inserts, and forms the flexible connection of valve rod 4 and valve plate 2, and valve plate 2 is close on the sealing surface of valve body 1.
Said formation valve rod 4 with a kind of structure of movable connection structure of valve plate 2 is: said valve plate 2 tops have the blind hole of certain depth; Valve rod 4 inserts among the blind hole of valve plate 2; Around valve plate 2 blind holes and valve rod 4 insertion portions, leave the gap, form the flexible connection of valve rod 4 and valve plate 2, said spring 3 one ends are fixed on the valve gap 5 of valve body 1; The other end is fixed on the valve plate 2, and valve plate 2 is close on the sealing surface of valve body 1.
Said formation valve rod 4 with the another kind of structure of the movable connection structure of valve plate 2 is: the bottom of said valve rod 4 has the hollow guide rod; One end of spring 3 is fixed on hollow guide rod cavity top; The other end is fixed on the bottom of valve plate 2 bottom blind holes, and valve plate 2 is close on the sealing surface of valve body 1.
The certain depth that blind hole is offered on the top of said valve plate 2 is 2/3 of valve plate 2 whole heights.
As shown in Figure 1, the non-return stop valve of the utility model, it is connected to form by valve body 1, valve plate 2, spring 3, valve rod 4, valve gap 5, handwheel 6.When inverse clock rotation hand wheel 6, can drive valve rod 4 and rise, under the effect of spring 3, the sealing surface that valve plate 2 touch valve body 1 keeps sealing.When there was pressure in pipeline, medium acted on and overcomes spring 3 active forces on the valve plate 2, and valve plate 2 moves upward along valve rod 4, valve opening; When the pipeline rapid decompression, valve plate 2 is affixed to the sealing surface sealing of valve body 1 rapidly, thereby prevents medium back flow under spring 3 power effects.
Clockwise rotation hand wheel 6 drives valve rod 4 and moves downward, and valve rod 4 is pushed down valve plate 2, guarantees that valve is in closed condition, and valve kept blocking when there was pressure medium in pipeline.
Claims (4)
1. non-return stop valve; This valve includes valve gap, valve rod, the valve plate that separates with valve rod and the spring on valve body, the valve body; Valve rod moves up and down valve plate in the spring action lower edge; It is characterized in that: said valve plate top has the blind hole of certain depth, and valve rod inserts among the blind hole in the valve plate, forms the flexible connection of valve rod and valve plate; Or valve rod establishes the valve plate periphery of blind hole in inserting, and forms the flexible connection of valve rod and valve plate, and valve plate is close on the sealing surface of valve body.
2. non-return stop valve according to claim 1; It is characterized in that: the movable connection structure of said formation valve rod and valve plate is: said valve plate top has the blind hole of certain depth, and valve rod inserts among the blind hole of valve plate, around valve plate blind hole and valve rod insertion portion, leaves the gap; Form the flexible connection of valve rod and valve plate; Said spring one end is fixed on the valve gap of valve body, and the other end is fixed on the valve plate, and valve plate is close on the sealing surface of valve body.
3. non-return stop valve according to claim 1; It is characterized in that: the movable connection structure of said formation valve rod and valve plate is: the bottom of said valve rod has the hollow guide rod; One end of spring is fixed on hollow guide rod cavity top; The other end is fixed on the bottom of valve plate bottom blind hole, and valve plate is close on the sealing surface of valve body.
4. non-return stop valve according to claim 1 is characterized in that: the certain depth that blind hole is offered on the top of said valve plate is 2/3 of a valve plate whole height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202592852U CN202176766U (en) | 2011-07-21 | 2011-07-21 | Check and stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202592852U CN202176766U (en) | 2011-07-21 | 2011-07-21 | Check and stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202176766U true CN202176766U (en) | 2012-03-28 |
Family
ID=45866644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202592852U Expired - Lifetime CN202176766U (en) | 2011-07-21 | 2011-07-21 | Check and stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202176766U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588635A (en) * | 2011-07-21 | 2012-07-18 | 天津市国威给排水设备制造有限公司 | Return stop valve |
| CN102878331A (en) * | 2012-10-13 | 2013-01-16 | 南通国电电站阀门有限公司 | Self seal guiding type stop check valve |
| CN105757297A (en) * | 2016-04-25 | 2016-07-13 | 凯瑞特阀业有限公司 | Multifunctional self-operated check valve |
| CN108511158A (en) * | 2018-05-15 | 2018-09-07 | 山东五岳电器有限公司 | Based on the fluid retracting device and method with the fire extinguishing linkage of oil-immersed type transformer oil draining nitrogen filling |
-
2011
- 2011-07-21 CN CN2011202592852U patent/CN202176766U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588635A (en) * | 2011-07-21 | 2012-07-18 | 天津市国威给排水设备制造有限公司 | Return stop valve |
| CN102878331A (en) * | 2012-10-13 | 2013-01-16 | 南通国电电站阀门有限公司 | Self seal guiding type stop check valve |
| CN105757297A (en) * | 2016-04-25 | 2016-07-13 | 凯瑞特阀业有限公司 | Multifunctional self-operated check valve |
| CN108511158A (en) * | 2018-05-15 | 2018-09-07 | 山东五岳电器有限公司 | Based on the fluid retracting device and method with the fire extinguishing linkage of oil-immersed type transformer oil draining nitrogen filling |
| CN108511158B (en) * | 2018-05-15 | 2024-01-26 | 山东五岳电器有限公司 | Oil recovery device and method based on oil discharge and nitrogen injection fire extinguishing linkage of oil immersed transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202176766U (en) | Check and stop valve | |
| CN201696728U (en) | Floating ball valve | |
| CN214197260U (en) | Novel stop valve | |
| CN102588635A (en) | Return stop valve | |
| CN202182218U (en) | Back flow preventing device with controllable flow | |
| CN204573277U (en) | Slow pass pilot-type solenoid valve | |
| CN204226809U (en) | A kind of stop valve structure | |
| CN204664492U (en) | Water filter safety valve | |
| CN204061976U (en) | Dress formula floating ball valve in one | |
| CN204477396U (en) | A kind of one-way non-return control valve unit | |
| CN107905765B (en) | Top drive splash-proof valve | |
| WO2005114347A3 (en) | Float valve assembly | |
| CN204127352U (en) | High temperature low moment of torsion middle high-pressure gate valve | |
| CN202451915U (en) | Pressure regulation electromagnetic valve | |
| CN203214979U (en) | Novel bottom valve | |
| CN201047270Y (en) | Frequently open type bottom hole back-pressure valve | |
| CN206054827U (en) | Lifting/lowering type check-valves | |
| CN201428429Y (en) | Anti-clogging arrow back pressure valve | |
| CN201739535U (en) | Pneumatic electric stop unloading valve | |
| CN206320391U (en) | A kind of magnetic control leakproof tap | |
| CN203868373U (en) | Pressure self-sealing gate valve | |
| CN206352658U (en) | Labyrinth type valve | |
| CN201502756U (en) | Lifting vertical flap check valve | |
| CN201129541Y (en) | Non-return and cut-off integrated valve | |
| CN203272892U (en) | Novel check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Return stop valve Effective date of registration: 20131122 Granted publication date: 20120328 Pledgee: Tianjin Dongfang Haixin SME Company limited by guarantee Pledgor: Tianjin Guowei Feeding & Drainage Equipment Ment Manufacturing Co., Ltd. Registration number: 2013120000050 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140305 Granted publication date: 20120328 Pledgee: Tianjin Dongfang Haixin SME Company limited by guarantee Pledgor: Tianjin Guowei Feeding & Drainage Equipment Ment Manufacturing Co., Ltd. Registration number: 2013120000050 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120328 |
|
| CX01 | Expiry of patent term |