CN203297681U - Adjustable slow-closure check valve - Google Patents
Adjustable slow-closure check valve Download PDFInfo
- Publication number
- CN203297681U CN203297681U CN2013203230665U CN201320323066U CN203297681U CN 203297681 U CN203297681 U CN 203297681U CN 2013203230665 U CN2013203230665 U CN 2013203230665U CN 201320323066 U CN201320323066 U CN 201320323066U CN 203297681 U CN203297681 U CN 203297681U
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- China
- Prior art keywords
- valve
- slow
- adjustable
- closure
- valve rod
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- Expired - Lifetime
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Abstract
The utility model provides an adjustable slow-closure check valve which comprises a valve body, a valve seat, a valve clack, a spring, a slow-closure cylinder, an adjustable piston, a valve element and a valve rod. The valve seat is arranged in the valve body, the valve element is fixed on the valve body, a threaded hole is formed in the center of the closed end, and a damping groove is formed in the circumference of the adjustable piston; one end of the valve rod is sleeved with the opening end of the adjustable piston; the other end of the valve rod is fixedly connected with the valve clack; the slow-closure cylinder is fixedly installed in the valve element and the middle of the valve rod penetrates through the slow-closure cylinder; a piston cavity matched with the adjustable piston is formed in the slow-closure cylinder; the valve rod is sleeved with the spring and the spring is located between the valve clack and the slow-closure cylinder. When media in the adjustable slow-closure check valve flow back, the valve clack is rapidly closed under the action of the spring and the reversed medium force, and when the adjustable piston is close to the slow-closure cylinder, the valve clack begins to be closed slowly, so that the combination of an opening and closing stage and a slow-closure stage is achieved, the purpose of reduction of water hammer action is achieved in the opening and closing stage, and the purpose of reduction of sealing face impact is achieved in the slow-closure stage.
Description
Technical field
The utility model belongs to valve field, is specifically related to a kind of adjustable slow-closure safety check.
Background technique
Safety check claims again check valve, one-way valve or check valve, and its effect is to prevent medium directional flow in pipeline and the function of unlikely refluence.The bottom valve of water pump suction pipe also belongs to the safety check class.Safety check is divided by structure, can be divided into three kinds of Lift check valve, Swing check valve and butterfly check valves.Lift check valve can be divided into vertical and horizontal two kinds.Swing check valve is divided into three kinds of single-lobe formula, Double-disc type and multi-clove types.Butterfly check valve be straight-through type, above several safety check can be divided on Connecting format be threaded, flange connects and weld three kinds.Open-shut device is opened voluntarily or closes by media flow and strength, to prevent that valve that medium flows backwards is on safety check.Safety check belongs to the self-acting valve class, is mainly used on the pipeline of medium one-way flow, only allows medium to flow to a direction, to try to avert accidents.
But at present on the market safety check is when medium flows backwards, and flap can quick closedown under spring and the effect of reverse media power, and this makes the percussion of sealing surface larger, and the reliability of sealing configuration is had certain influence.
The model utility content
The utility model is for above-mentioned the deficiencies in the prior art, and a kind of simple in structure, adjustable slow-closure safety check that can slow down the sealing surface percussion is provided.
The utility model is achieved by the following technical solution:
A kind of adjustable slow-closure safety check, it is characterized in that, comprise valve body, valve seat, flap, spring, Slow Close cylinder, adjustable piston, spool and valve rod, valve seat is arranged in valve body, and spool is fixed on valve body, and an end of described adjustable piston is opening end, inner hollow, the other end is closed end, and the center of described closed end is provided with a tapped hole, offers damping slot on the excircle of adjustable piston; The opening end of adjustable piston is sleeved on an end outside of valve rod; The other end of valve rod is fixedly connected with flap; The Slow Close cylinder is fixedly mounted in spool, and described Slow Close cylinder is passed at the middle part of valve rod; Be provided with the piston cavity with the adjustable piston coupling in the Slow Close cylinder; The valve rod outer cover is equipped with spring, and described spring is between flap and Slow Close cylinder.
Further setting of the present utility model is, seals by the sealing seat on valve seat between flap and valve body.
Further setting of the present utility model is, in a described tapped hole of lock bolt screw-in, adjustable piston and valve rod is linked together.
Further setting of the present utility model is, described spool is connected with valve body by a plurality of stiffening ribs.
Further setting of the present utility model is, the inner headed face of described adjustable piston and the periphery of valve rod are threaded connection.
Adjustable slow-closure safety check described in the utility model, when medium flows backwards, flap quick closedown under spring and the effect of reverse media power, while being closed to adjustable piston near the Slow Close cylinder, flap starts Slow Close, namely realized two stage combinations of switch Slow Close, the switch stage reaches the minimizing water hammering, and the Slow Close stage reaches slows down the sealing surface percussion; This adjustable slow-closure check valve structure is simple, reliable performance, cost are low.
Description of drawings
Fig. 1 is the structural drawing of adjustable slow-closure closure of check ring state described in the utility model;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the structural drawing of adjustable slow-closure safety check opening state described in the utility model;
In figure, each label is: valve body 1, valve seat 2, flap 3, spring 4, Slow Close cylinder 5, adjustable piston 6, lock screw 7, spool 8, valve rod 9, damping slot 10.
Embodiment
The utility model is described in more detail below in conjunction with attached.
As Figure 1-3, the utility model provides a kind of adjustable slow-closure safety check, comprises valve body 1, valve seat 2, flap 3, spring 4, Slow Close cylinder 5, adjustable piston 6, spool 8 and valve rod 9, and valve seat 2 is arranged in valve body 1, spool 8 is fixed on valve body 1, by a plurality of stiffening ribs, with valve body 1, is connected.One end of described adjustable piston 6 is opening end, inner hollow, and the other end is closed end, the center of described closed end is provided with a tapped hole, offers damping slot 10 on the excircle of adjustable piston 6; The opening end of adjustable piston 6 is sleeved on an end outside of valve rod 9; The other end of valve rod 9 is fixedly connected with flap 3; One lock bolt 7 screws in described tapped hole, and adjustable piston 6 and valve rod 9 are linked together.Slow Close cylinder 5 is fixedly mounted in spool 8, and described Slow Close cylinder 5 is passed at the middle part of valve rod 9; Be provided with the piston cavity with adjustable piston 6 couplings in Slow Close cylinder 5; Valve rod 9 outer cover are equipped with spring 4, and described spring 4 is between flap 3 and Slow Close cylinder 5.Seal by the sealing seat on valve seat 2 between flap 3 and valve body 1.
Preferably, the periphery of the inner headed face of described adjustable piston 6 and valve rod 9 is threaded connection, and can regulate according to actual needs like this length of the attachment portion of adjustable piston 6 and valve rod 9, namely can regulate the length of Slow Close section.
When medium flows backwards, flap 3 quick closedown under spring 4 and the effect of reverse media power, while being closed to adjustable piston 6 near Slow Close cylinder 5, due to damping function, flap 3 starts Slow Close, has namely realized two stage combinations of switch Slow Close.
Claims (5)
1. adjustable slow-closure safety check, it is characterized in that, comprise valve body (1), valve seat (2), flap (3), spring (4), Slow Close cylinder (5), adjustable piston (6), spool (8) and valve rod (9), valve seat (2) is arranged in valve body (1), spool (8) is fixed on valve body (1), one end of described adjustable piston (6) is opening end, inner hollow, the other end is closed end, the center of described closed end is provided with a tapped hole, offers damping slot (10) on the excircle of adjustable piston (6); The opening end of adjustable piston (6) is sleeved on an end outside of valve rod (9); The other end of valve rod (9) is fixedly connected with flap (3); Slow Close cylinder (5) is fixedly mounted in spool (8), and described Slow Close cylinder (5) is passed at the middle part of valve rod (9); Be provided with the piston cavity with adjustable piston (6) coupling in Slow Close cylinder (5); Valve rod (9) outer cover is equipped with spring (4), and described spring (4) is positioned between flap (3) and Slow Close cylinder (5).
2. adjustable slow-closure safety check according to claim 1, is characterized in that, seals by the sealing seat on valve seat (2) between flap (3) and valve body (1).
3. adjustable slow-closure safety check according to claim 1, is characterized in that, a lock bolt (7) screws in described tapped hole, and adjustable piston (6) and valve rod (9) are linked together.
4. adjustable slow-closure safety check according to claim 1, is characterized in that, described spool (8) is connected with valve body (1) by a plurality of stiffening ribs.
5. adjustable slow-closure safety check according to claim 1, is characterized in that, the periphery of the inner headed face of described adjustable piston (6) and valve rod (9) is threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203230665U CN203297681U (en) | 2013-06-05 | 2013-06-05 | Adjustable slow-closure check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203230665U CN203297681U (en) | 2013-06-05 | 2013-06-05 | Adjustable slow-closure check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297681U true CN203297681U (en) | 2013-11-20 |
Family
ID=49573688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203230665U Expired - Lifetime CN203297681U (en) | 2013-06-05 | 2013-06-05 | Adjustable slow-closure check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297681U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455610A (en) * | 2014-11-20 | 2015-03-25 | 高仁超 | Silent type multifunctional micro-resistance water pump control valve |
| CN104747761A (en) * | 2015-04-01 | 2015-07-01 | 上海阀门厂有限公司 | Quick-closing slow closure structure of axle-flow type check valve |
| CN107477220A (en) * | 2017-10-07 | 2017-12-15 | 开平市英卫建材有限公司 | A kind of explosion-proof water saving check-valves |
| CN112728170A (en) * | 2020-12-31 | 2021-04-30 | 五洲阀门股份有限公司 | Fine-adjustment slow-closing check valve |
| CN113653837A (en) * | 2021-09-06 | 2021-11-16 | 刘余 | Assembled forged steel axial flow check valve |
-
2013
- 2013-06-05 CN CN2013203230665U patent/CN203297681U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455610A (en) * | 2014-11-20 | 2015-03-25 | 高仁超 | Silent type multifunctional micro-resistance water pump control valve |
| CN104747761A (en) * | 2015-04-01 | 2015-07-01 | 上海阀门厂有限公司 | Quick-closing slow closure structure of axle-flow type check valve |
| CN107477220A (en) * | 2017-10-07 | 2017-12-15 | 开平市英卫建材有限公司 | A kind of explosion-proof water saving check-valves |
| CN112728170A (en) * | 2020-12-31 | 2021-04-30 | 五洲阀门股份有限公司 | Fine-adjustment slow-closing check valve |
| CN113653837A (en) * | 2021-09-06 | 2021-11-16 | 刘余 | Assembled forged steel axial flow check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |