CN204312750U - A kind of built-in bend anti-backflow ball valve - Google Patents
A kind of built-in bend anti-backflow ball valve Download PDFInfo
- Publication number
- CN204312750U CN204312750U CN201420703975.6U CN201420703975U CN204312750U CN 204312750 U CN204312750 U CN 204312750U CN 201420703975 U CN201420703975 U CN 201420703975U CN 204312750 U CN204312750 U CN 204312750U
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- CN
- China
- Prior art keywords
- spool
- built
- ball valve
- water proof
- proof catch
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Abstract
The utility model discloses a kind of built-in bend anti-backflow ball valve, comprise valve body (1), valve rod (2) and spool (3), the cavity volume (101) for accommodating spool (3) is provided with in valve body (1), spool (3) is arranged in cavity volume (101), valve rod (2) is fixedly connected with spool (3) through valve body (1), it is characterized in that, described spool (3) includes the mouth of a river (301) and water outlet (302), spiral pipe (4) is provided with between described water inlet (301) and water outlet (302), water proof catch (5) is set in described spiral pipe (4), described water proof catch (5) only can be opened towards water outlet (302) direction, the utility model can prevent liquid backflow in time, with preventing water return function, anti-non-return water is effective, cost is low, do not need in addition safety check to be installed.
Description
Technical field
The utility model belongs to valve field, particularly relates to a kind of built-in bend anti-backflow ball valve.
Background technique
In fluid-transporting tubing, it is large that ball valve has the amount of opening, open and close fast advantage to be widely used, in prior art, when ball valve closes, due to the unexpected change of valve pressure at both sides and the time delays of pass valve, easy generation backwater, in order to anti-non-return water, usually needs to install safety check and coordinates ball valve to use, increase cost, installation and maintenance bothers.
Model utility content
In order to solve prior art problem, the utility model provides a kind of built-in bend anti-backflow ball valve, backwater when can prevent from closing valve.
The technical solution adopted in the utility model is:
A kind of built-in bend anti-backflow ball valve, comprise valve body, valve rod and spool, the cavity volume for accommodating spool is provided with in valve body, spool is arranged in cavity volume, and valve rod is fixedly connected with spool through valve body, it is characterized in that, spool includes the mouth of a river and water outlet, be provided with spiral pipe between water inlet and water outlet, arrange water proof catch in spiral pipe, water proof catch only can be opened towards water outlet direction; Backwater can be buffered in pipeline by spiral pipe, prevents liquid backflow, and water proof catch only can be opened towards water outlet direction simultaneously, and namely water only can flow out towards water outlet direction, prevents from closing the unexpected change liquid backflow of valve moment due to hydraulic pressure.
The top of water proof catch is connected with the inwall axle of spiral pipe, water proof catch is provided with convex surface near the side of water inlet, water proof catch can rotate before and after axle, because water proof catch is provided with convex surface near the side of water inlet, convex surface stops that water proof catch is towards water inlet direction Unscrew, makes water proof catch only can open towards water outlet direction.
Water proof catch is concave surface 501 towards the surface of water outlet, when there being liquid backflow, because concave surface fully can contact the liquid of backflow, the liquid of backflow can apply larger power to concave surface, water proof catch is cut off spiral pipe, makes withdrawing fluid can not continue backflow.
The internal diameter of spiral pipe is equal to, or greater than the internal diameter of water inlet.Spiral pipe is made to have enough capacity to accommodate withdrawing fluid.
Chamber wall and the spool contacting point of the cavity volume of valve body are provided with sealing gasket.Sealing gasket is elastic seal ring.
Water proof catch is vulcanite material, and material is light and be not easy corrosion.
Compared with prior art, the utility model beneficial effect comprises:
A kind of built-in bend anti-backflow ball valve of the utility model is by arranging spiral pipe and water proof catch, and can prevent liquid backflow in time, with preventing water return function, anti-non-return water is effective, and cost is low, does not need to install safety check in addition.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of built-in bend anti-backflow ball valve of the utility model;
Flow direction and water proof catch view when Fig. 2 is the utility model positive normally open valve;
Water proof catch view when Fig. 3 is backwater after the valve of the utility model pass.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of built-in bend anti-backflow ball valve, comprise valve body 1, valve rod 2 and spool 3, be provided with the cavity volume 101 for accommodating spool 3 in valve body 1, spool 3 is arranged in cavity volume 101, valve rod 2 is fixedly connected with spool 3 through valve body 1, it is characterized in that, spool 3 includes the mouth of a river 301 and water outlet 302, is provided with spiral pipe 4 between water inlet 301 and water outlet 302, arrange water proof catch 5 in spiral pipe 4, water proof catch 5 only can be opened towards water outlet 302 direction; Backwater can be buffered in pipeline by spiral pipe 4, prevents liquid backflow, and water proof catch 5 only can be opened towards water outlet direction simultaneously, and namely water only can flow out towards water outlet direction, prevents from closing the unexpected change liquid backflow of valve moment due to hydraulic pressure.
As shown in Figures 2 and 3, in figure, direction of arrow express liquid flows to, the top of water proof catch 5 is connected with the inwall axle of spiral pipe 4, water proof catch 5 is provided with convex surface 6 near the side of water inlet, water proof catch 5 can rotate before and after axle, because water proof catch 5 is provided with convex surface 6 near the side of water inlet, convex surface stops that water proof catch 5 is towards water inlet direction Unscrew, makes water proof catch 5 only can open towards water outlet direction.
Water proof catch 5 is concave surface 501 towards the surface of water outlet, when there being liquid backflow, because concave surface fully can contact the liquid of backflow, the liquid of backflow can apply larger power to concave surface 501, water proof catch 5 is cut off spiral pipe 4, makes withdrawing fluid can not continue backflow.
The internal diameter of spiral pipe 4 is equal to, or greater than the internal diameter of water inlet 301.Spiral pipe 4 is made to have enough capacity to accommodate withdrawing fluid.
Chamber wall and spool 3 contacting point of the cavity volume 101 of valve body 1 are provided with sealing gasket.Sealing gasket is elastic seal ring, and the present embodiment elastic seal ring is silicone rubber material.
Water proof catch 5 is vulcanite material, and material is light and be not easy corrosion.
The above is only preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (7)
1. a built-in bend anti-backflow ball valve, comprise valve body (1), valve rod (2) and spool (3), the cavity volume (101) for accommodating spool (3) is provided with in valve body (1), spool (3) is arranged in cavity volume (101), valve rod (2) is fixedly connected with spool (3) through valve body (1), it is characterized in that, described spool (3) includes the mouth of a river (301) and water outlet (302), spiral pipe (4) is provided with between described water inlet (301) and water outlet (302), water proof catch (5) is set in described spiral pipe (4), described water proof catch (5) only can be opened towards water outlet (302) direction.
2. one according to claim 1 built-in bend anti-backflow ball valve, it is characterized in that, the top of described water proof catch (5) is connected with the inwall axle of spiral pipe (4), and described water proof catch (5) is provided with convex surface (6) near the side of water inlet (301).
3. one according to claim 1 built-in bend anti-backflow ball valve, is characterized in that, described water proof catch (5) is concave surface (501) towards the one side of water outlet.
4. one according to claim 1 built-in bend anti-backflow ball valve, is characterized in that, the internal diameter of described spiral pipe (4) is equal to, or greater than the internal diameter of described water inlet (301).
5. one according to claim 1 built-in bend anti-backflow ball valve, is characterized in that, chamber wall and spool (3) contacting point of the cavity volume (101) of described valve body (1) are provided with sealing gasket.
6. one according to claim 5 built-in bend anti-backflow ball valve, is characterized in that, described sealing gasket is elastic seal ring.
7. one according to claim 1 built-in bend anti-backflow ball valve, is characterized in that, described water proof catch (5) is vulcanite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703975.6U CN204312750U (en) | 2014-11-21 | 2014-11-21 | A kind of built-in bend anti-backflow ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703975.6U CN204312750U (en) | 2014-11-21 | 2014-11-21 | A kind of built-in bend anti-backflow ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312750U true CN204312750U (en) | 2015-05-06 |
Family
ID=53135068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420703975.6U Expired - Fee Related CN204312750U (en) | 2014-11-21 | 2014-11-21 | A kind of built-in bend anti-backflow ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204312750U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455527A (en) * | 2014-11-21 | 2015-03-25 | 苏州福润机械有限公司 | Backflow-prevention spherical valve with built-in bend |
-
2014
- 2014-11-21 CN CN201420703975.6U patent/CN204312750U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455527A (en) * | 2014-11-21 | 2015-03-25 | 苏州福润机械有限公司 | Backflow-prevention spherical valve with built-in bend |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20151121 |
|
| EXPY | Termination of patent right or utility model |