CN204284551U - A kind of on-line control opens and closes the safety check of speed - Google Patents
A kind of on-line control opens and closes the safety check of speed Download PDFInfo
- Publication number
- CN204284551U CN204284551U CN201420772260.6U CN201420772260U CN204284551U CN 204284551 U CN204284551 U CN 204284551U CN 201420772260 U CN201420772260 U CN 201420772260U CN 204284551 U CN204284551 U CN 204284551U
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- Prior art keywords
- valve
- safety check
- speed
- line control
- closes
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- Expired - Fee Related
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Abstract
The utility model discloses the safety check that a kind of on-line control opens and closes speed, belong to valve field.The safety check that this on-line control opens and closes speed comprises valve body, is arranged on the endoceliac flap of valve and valve rod, and the sealing surface of described flap and valve body entrance point is adaptive, is also provided with the support with valve rod coaxial line, is provided with speed regulating structure in support in valve body chamber; Described speed regulating structure is communicated to valve body media entrance by on-off structure.The utility model is adopted to achieve the on-line control function of safety check keying speed.
Description
Technical field
The utility model relates to valve field, and specifically a kind of on-line control opens and closes the safety check of speed.
Background technique
Traditional safety check is normally by the Swing check valve of the Assembly of the parts such as valve body, valve seat, flap, rocking bar, bearing pin and valve gap, be arranged on transmission pipeline and automatically prevent the purposes that in pipeline, working medium flows backwards, its switch relies on working medium to promote flap and opens along bearing pin rotation through rocking bar, working medium starts normal circulation, once pipeline breaks down, flowing backwards appears in working medium, refluence medium can promote flap and close voluntarily, can block medium completely and continue to flow backwards.
The in use common problem of this Swing check valve is: because the switch of this valve need come along bearing pin through rocking bar, because its Lift is uncontrollable, cause the operating mode that cannot meet and need regulate flow.And a lot of technological requirement safety check is when cutting out, speed must slow down, and to reduce the impact of medium to pipe-line system, avoids occurring water hammer.
The safety check of usual standard-sized sheet full cut-off, when closing, under pressure medium effect, its closing impact is huge, very easily causes clashing between the flap of plane sealing structure and its sealing surface of valve seat, i.e. water hammer.And not only noise is large to occur water hammer, and destructible sealing surface causes severe leakage, has a strong impact on the working life of valve.
Therefore, the on-line control realizing safety check keying speed just seems particularly necessary.
Model utility content
The utility model aims to provide the safety check that a kind of on-line control opens and closes speed, to solve the problem.
For achieving the above object, the technical solution of the utility model is as follows:
On-line control opens and closes a safety check for speed, comprises valve body, is arranged on the endoceliac flap of valve and valve rod, it is characterized in that: valve stem end is arranged in a Slow Close cylinder, and be provided with piston in Slow Close cylinder, fixed cover is on valve rod; Cavity before piston and valve rod between extreme direction Slow Close cylinder is Slow Close chamber, and Slow Close chamber is communicated with medium inlet end with valve by pipeline.
Further, described Slow Close cylinder is arranged in support, and support and valve rod place on the same axis, are connected to valve body with strengthening rib.
Further, described Slow Close cylinder is convex hollow-core construction, fits tightly carrier openings; Lug boss has the passage with valve rod size adaptation, and lug boss and valve stem contacts position have at least one and place the annular groove sealing O shape and enclose.
Further, described piston is central aperture structure, and outside piston week fits tightly the Slow Close inside wall of cylinder, and is provided with the annular groove that at least one places sealing O shape circle.
Further, be also provided with fixed mechanism in described support, comprise cylinder body clamp ring, cylinder body collar, piston wire ring, large and wire ring, cylinder body clamp ring is threaded with Slow Close cylinder, with cylinder body and collar is locked at Slow Close cylinder lug boss excircle.
Further, described large also wire ring is central aperture structure, and be arranged on Slow Close cylinder port, large and wire ring opening diameter is less than outside piston week diameter.
Further, described piston piston and wire ring locking be enclosed within valve rod.
Further, described valve comprises modulating valve, little safety check, and modulating valve and little safety check are connected in parallel on pipeline.
Further, be provided with the spring that flap can be made to reset between described flap and support, spring housing is on valve rod.
Further, the body cavity of described support and valve body is fluid type, and the maximum outside diameter of support is more than or equal to the maximum outside diameter of flap.
The beneficial effects of the utility model are:
One, the opening speed of safety check can be accelerated.When valve opening, medium flows from left to right, now, because speed regulating structure is communicated to valve body media entrance by on-off structure, when opens check valve, medium promotes flap and moves right, little safety check work, only need open the modulating valve in on-off structure, medium can enter in the Slow Close chamber of Slow Close cylinder along pipeline simultaneously, produces the power promoting piston and move right.The thrust that medium produces flap and enter the superposition of Slow Close cylinder Driving force, makes safety check when opening, can be quicker, realize the object of Quick open valve door.
Two, when the valve is closed, medium flows from right to left, and now, outlet end reflux medium can produce the power that one promotes flap left, and spring also can produce a thrust left.Medium in Slow Close cylinder is moved to the left along with piston, and the medium in Slow Close chamber can be squeezed, and pressure increases, and produce a larger resistance to piston, resistance can overcome the power that medium promotes flap left, realizes the object that closure of check ring hourly velocity slows down simultaneously.
Three, modulating valve and little safety check are connected in parallel on pipeline, little safety check plays one-way conduction effect, and modulating valve and little safety check parallel connection structure, only modulating valve need be controlled, regulate the pressure in Slow Close cylinder to regulate the power produced when overcoming medium back flow.Thus realize the on-line control effect of safety check.
Four, between Slow Close cylinder and valve rod, be all at least provided with a sealing O shape circle between piston and Slow Close cylinder, play good seal action, ensure that the pressure of Slow Close cylinder can not produce the Lou phenomenon such as pressure, the repeatedly utilization of valve can be ensured.
Five, the body cavity of described support and valve body is fluid type, and the maximum outside diameter of support is more than or equal to the maximum outside diameter of flap.When medium back flow, medium can flow along the body cavity fluid type curved surface of support and valve body, can not act directly on flap.Flap can not directly impinge upon on valve body, available protecting flap.
Accompanying drawing explanation
Fig. 1 is the check valve structure schematic diagram of the on-line control keying speed that the utility model provides.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.
As shown in Figure 1, a kind of on-line control opens and closes the safety check of speed, comprises valve body 1, is arranged on flap 2 in valve body 1 chamber and valve rod 6, it is characterized in that: valve rod 6 end is arranged in a Slow Close cylinder 8, is provided with piston 15 in Slow Close cylinder 8, and fixed cover is on valve rod 6; Cavity before piston 15 and valve rod 6 between extreme direction Slow Close cylinder 8 is Slow Close chamber, and Slow Close chamber is communicated with medium inlet end with valve by pipeline.Described Slow Close cylinder 8 is arranged in support 3, and support 3 and valve rod 6 place on the same axis, are connected to valve body 1 with strengthening rib.Described Slow Close cylinder 8 is convex hollow-core construction, fits tightly support 2 opening; Lug boss has the passage with valve rod 6 size adaptation, and lug boss and valve rod 6 contact position have at least one and place the annular groove 7 sealing O shape and enclose.Described piston 15 is central aperture structure, and piston 15 excircle fits tightly Slow Close cylinder 8 inwall, and is provided with the annular groove 14 that at least one places sealing O shape circle.Also be provided with fixed mechanism in described support 3, comprise cylinder body clamp ring 10, cylinder body collar 13, piston wire ring 16, large and wire ring 17, cylinder body clamp ring 10 is threaded with Slow Close cylinder 8, with cylinder body and collar 13 is locked at Slow Close cylinder 8 lug boss excircle.Described large also wire ring 17 is central aperture structure, is arranged on Slow Close cylinder 8 port, and large also wire ring 17 opening diameter is less than piston 15 excircle diameter.Described piston 15 with piston and wire ring 16 locking be enclosed within valve rod.Described valve comprises modulating valve 12, little safety check 11, and modulating valve 12 and little safety check 11 are connected in parallel on pipeline.Be provided with the spring 9 that flap can be made to reset between described flap 2 and support 3, spring 9 is enclosed within valve rod.Body 1 chamber of described support 3 and valve body is fluid type, and the maximum outside diameter of support 3 is more than or equal to the maximum outside diameter of flap 2.
In use, when after Open valve, medium flows from left to right, and medium acts on flap 2, and promote flap 2 to the right, flap 2 promotes valve rod 6 to the right, and valve rod 6 drives piston 15 to the right.Now, the one-way only operation of little safety check 11, passes into medium in Slow Close cylinder 8, by opening modulating valve 12, controls the flow velocity flowing into Slow Close cylinder 8 medium.The function accelerated when realizing valve opening.
When the valve is closed, medium is turned left from the right side stream, and medium, along the fluid type structure circulation of support 3 and valve body 1, does not act directly on flap 2, effectively avoids flap 2 directly to impinge upon on valve body because of pressure, protection flap.Now, outlet end reflux medium can produce the power that one promotes flap 2 left, and spring 9 also can produce a thrust left.Medium in Slow Close cylinder 8 is moved to the left along with piston 15, medium in cylinder body can be squeezed, and pressure increases, and produces a larger resistance to piston 15 simultaneously, resistance can overcome the power that medium promotes flap 2 left, realizes the object that closure of check ring hourly velocity slows down.And now, little safety check 11 one direction shut-off, by the keying of regulating and controlling valve 12, controls the pressure medium in Slow Close cylinder 8, thus adjustment drag size, the closing velocity realizing safety check is adjustable.The utility model structure is simple, easily realizes, and the ingenious pressure medium controlled in Slow Close cylinder that adopts regulates drag size, realizes the on-line control that safety check opens and closes speed.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. on-line control opens and closes a safety check for speed, comprises valve body, is arranged on the endoceliac flap of valve and valve rod, it is characterized in that: valve stem end is arranged in a Slow Close cylinder, and be provided with piston in Slow Close cylinder, fixed cover is on valve rod; Cavity before piston and valve rod between extreme direction Slow Close cylinder is Slow Close chamber, and Slow Close chamber is communicated with medium inlet end with valve by pipeline.
2. on-line control according to claim 1 opens and closes the safety check of speed, and it is characterized in that: described Slow Close cylinder is arranged in support, support and valve rod place on the same axis, are connected to valve body with strengthening rib.
3. on-line control according to claim 1 opens and closes the safety check of speed, it is characterized in that: described Slow Close cylinder is convex hollow-core construction, fits tightly carrier openings; Lug boss has the passage with valve rod size adaptation, and lug boss and valve stem contacts position have at least one and place the annular groove sealing O shape and enclose.
4. on-line control according to claim 1 opens and closes the safety check of speed, it is characterized in that: described piston is central aperture structure, and outside piston week fits tightly the Slow Close inside wall of cylinder, and is provided with the annular groove that at least one places sealing O shape circle.
5. on-line control according to claim 2 opens and closes the safety check of speed, it is characterized in that: in described support, be also provided with fixed mechanism, comprise cylinder body clamp ring, cylinder body collar, piston wire ring, large and wire ring, cylinder body clamp ring is threaded with Slow Close cylinder, with cylinder body and collar is locked at Slow Close cylinder lug boss excircle.
6. on-line control according to claim 5 opens and closes the safety check of speed, it is characterized in that: described large also wire ring is central aperture structure, and be arranged on Slow Close cylinder port, large and wire ring opening diameter is less than outside piston week diameter.
7. on-line control according to claim 5 opens and closes the safety check of speed, it is characterized in that: described piston piston wire ring locking are enclosed within valve rod.
8. on-line control according to claim 1 opens and closes the safety check of speed, and it is characterized in that: described valve comprises modulating valve, little safety check, modulating valve and little safety check are connected in parallel on pipeline.
9. on-line control according to claim 2 opens and closes the safety check of speed, it is characterized in that: be provided with the spring that flap can be made to reset between described flap and support, spring housing is on valve rod.
10. on-line control according to claim 2 opens and closes the safety check of speed, and it is characterized in that: the body cavity of described support and valve body is fluid type, the maximum outside diameter of support is more than or equal to the maximum outside diameter of flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772260.6U CN204284551U (en) | 2014-12-10 | 2014-12-10 | A kind of on-line control opens and closes the safety check of speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772260.6U CN204284551U (en) | 2014-12-10 | 2014-12-10 | A kind of on-line control opens and closes the safety check of speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204284551U true CN204284551U (en) | 2015-04-22 |
Family
ID=52867712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420772260.6U Expired - Fee Related CN204284551U (en) | 2014-12-10 | 2014-12-10 | A kind of on-line control opens and closes the safety check of speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204284551U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455586A (en) * | 2014-12-10 | 2015-03-25 | 四川固特阀门制造有限公司 | Check valve for online adjustment of opening-closing speed |
| CN108468840A (en) * | 2018-05-21 | 2018-08-31 | 上海瑞晨环保科技有限公司 | Micro-resistance slowly-closed type underwater bottom valve |
| CN113202956A (en) * | 2021-03-22 | 2021-08-03 | 南通市力沛流体阀业有限公司 | Built-in multi-functional check valve that has slowly closed structure |
-
2014
- 2014-12-10 CN CN201420772260.6U patent/CN204284551U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455586A (en) * | 2014-12-10 | 2015-03-25 | 四川固特阀门制造有限公司 | Check valve for online adjustment of opening-closing speed |
| CN108468840A (en) * | 2018-05-21 | 2018-08-31 | 上海瑞晨环保科技有限公司 | Micro-resistance slowly-closed type underwater bottom valve |
| CN113202956A (en) * | 2021-03-22 | 2021-08-03 | 南通市力沛流体阀业有限公司 | Built-in multi-functional check valve that has slowly closed structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20201210 |