CN202158234U - Rotary-opening type check valve - Google Patents
Rotary-opening type check valve Download PDFInfo
- Publication number
- CN202158234U CN202158234U CN2011202821758U CN201120282175U CN202158234U CN 202158234 U CN202158234 U CN 202158234U CN 2011202821758 U CN2011202821758 U CN 2011202821758U CN 201120282175 U CN201120282175 U CN 201120282175U CN 202158234 U CN202158234 U CN 202158234U
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- CN
- China
- Prior art keywords
- valve
- flap
- axle center
- swing check
- valve rod
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model provides a rotary-opening type check valve, which comprises a valve body, a valve core, a valve seat, a valve stem arranged on the valve body, and a valve flap fixedly arranged inside the valve cavity of the valve body through the valve stem and capable of rotating around the valve stem. The axle center of the valve stem transversely passes through the upper half circle of a circular pipeline. The back side of the valve flap is equipped with a balance block capable of coaxially rotating along with the valve flap. The distance between the gravity center of the balance block and the axle center of the valve stem is greater than the distance between the gravity center of the valve flap and the axle center of the valve stem. The rotary-opening type check valve is smaller in volume and lower in cost, while the caliber of a pipeline is not changed. Meanwhile, the impact between the valve flap and the valve seat is smaller when the rotary-opening type check valve is closed.
Description
Technical field
The utility model relates to a kind of valve switch, especially a kind of safety check.
Background technique
The effect of safety check is only to allow medium to flow to a direction, and stops mobile in the other direction.Common this valve is work automatically, and under the effect of a direction flowing fluid pressure, flap is opened; When fluid flows in the other direction, act on valve seat by the flap of coincidence certainly of hydrodynamic pressure and flap, thereby cut off mobile.Safety check is meant and relies on medium itself to flow and automatic open and close flap, is used for preventing the valve that medium flows backwards, and claims check valve, one-way valve, reflux valve and back pressure valve again.It mainly acts on is to prevent that medium from flowing backwards, preventing pump and drive motor counter-rotating, and the releasing of vessel media.Safety check also can be used for possibly rising to the auxiliary system of pressing above system to wherein pressure to be provided on the pipeline of supply.Safety check mainly can be divided into Swing check valve (according to the center of gravity rotation) and Lift check valve (moving along axis).
Existing Swing check valve, the valve rod of flap are located at the pipeline top, rely on the own wt and the hydrodynamic pressure of flap that it is closed.Because the valve rod of flap is located at the pipeline top, the valve body of safety check need be above pipeline headspace, cause the volume of safety check bigger; Cost is also higher, closes in the closed procedure, and flap is big from valve rod part rotation diameter far away; Stroke is longer, and potential energy is big, under the effect of hydrodynamic pressure and deadweight; And the impact force between the valve seat is big, damages the sealing surface of self and valve seat easily.
The model utility content
It is less that the problem that the utility model will solve provides a kind of volume, and cost is also lower, the safety check that the impact between flap and the valve seat is less.
In order to overcome the above problems, the utility model provides a kind of Swing check valve, comprises valve body; Spool, valve seat is installed in the valve rod on the valve body; Be fixed in the valve pocket of valve body the flap that can rotate around valve rod by valve rod; The upper semi-circle in circular pipe is crossed in described valve rod axle center, and described flap dorsal part is provided with the equilibrium block with its coaxial rotation, and the center of gravity of said equilibrium block arrives the distance in valve rod axle center greater than the flap center of gravity to the distance in valve rod axle center.
When said flap was closed, the center of gravity of said equilibrium block was lower than the valve rod axle center.
It between said valve seat and the flap cone match.
Said valve seat radial outside wall is provided with the annular groove around its axle center, and said annular groove is communicated in segment pipe behind the valve body.
Be arranged with seal ring on the said spool radial outer wall, the seal ring bottom section is up big and down small taper, and spool is provided with the inclined-plane that cooperates as tensioner with the seal ring bottom.
The sealing surface of said valve seat and flap is a Hardmetal materials.
The Swing check valve of the utility model through being provided with equilibrium block, changes the position of valve rod, makes safety check valve volume under the constant situation of pipe diameter littler, and cost is lower, and the impact between flap and the valve seat is also less when closing.
Description of drawings
Accompanying drawing 1 is the generalized section of the utility model.
Accompanying drawing 2 is schematic representation that amplify the part of Fig. 1.
Accompanying drawing 3 is another local schematic representation that amplify of Fig. 1.
1 is valve body; 2 is valve seat; 3 is flap; 4 is spool; 5 is seal ring; 6 is valve rod; 7 is equilibrium block; 21 is the sealing surface of valve seat; 22 is groove; 31 is the sealing surface of flap.
Embodiment
Below in conjunction with accompanying drawing a kind of Swing check valve of the utility model is described further.
As shown in fig. 1, a kind of Swing check valve of present embodiment comprises valve body 1; Spool 4, valve seat 2 is installed in the valve rod 6 on the valve body 1; Be fixed in the valve pocket of valve body 1 flap 3 that can rotate around valve rod 6 by valve rod 6, circular pipeline can be divided into two semicircles up and down, and the upper semi-circle in circular pipe is crossed in described valve rod 6 axle center; When described flap 3 was closed, the one side that flows into towards the fluid forward was positive, another side; The one side of promptly keeping out the fluid refluence is the back side, and flap 3 dorsal parts are provided with the equilibrium block 7 with its coaxial rotation, and the center of gravity of said equilibrium block 7 arrives the distance in valve rod 6 axle center greater than flap 3 centers of gravity to the distance in valve rod 6 axle center.Said equilibrium block 7 can be and flap 3 one, also can be to be fixed on the flap 3, can also be directly connected in valve rod 6 in addition.Equilibrium block 7 uses the bigger material of density to make, and weight is bigger, and its center of gravity is far away from the axle center of valve rod 6; Be that moment of torsion is bigger, rely on its weight that valve rod 6 is comparatively fast rotated, reach flap 3 auto-closings; Certainly, add hydrodynamic pressure, its self-closing effect can be better.So valve rod 6 need not be located at pipeline top, can cross at the upper semi-circle of circular pipe, thereby valve body 1 need above pipeline, not establish one hold flap 3 and valve rod 6 cavity, valve body 1 volume reduces, cost descends.When flap described in the present embodiment 3 was closed, the center of gravity of said equilibrium block 7 was lower than valve rod 6 axle center, can further make flap 3 auto-closings.
As shown in Figure 2, in the present embodiment, be cone match between said valve seat 2 and the flap 3, it is also better that cone match can adapt to the rotation and the sealing of flap 3 preferably.Said valve seat 2 radial outside walls are provided with the annular groove 22 around its axle center; Said annular groove 22 is corresponding to valve body 1 inwall edge; Be communicated in valve body 1 back segment pipe, described valve body 1 back segment be valve body 1 with respect to flap 3 be divided into two sections, during the fluid forward flow after through one section.Groove 22 makes valve seat 2 have better elasticity; Can adapt to flap 3 because distortion or the displacement that hydrodynamic pressure causes can get into annular groove 22 during again owing to fluid countercurrent current it is produced pressure, make valve seat and flap remain at sealing state; And better tightness can be born big pressure.The sealing surface 21 of said valve seat 2 and the sealing surface of flap 3 31 are Hardmetal materials, have more anti-collision, the advantage that the life-span is longer.
As shown in Figure 3, in the present embodiment, be arranged with seal ring 5 on said spool 4 radial outer wall; Seal ring 5 bottom sections are up big and down small taper, and spool 4 is provided with the inclined-plane that cooperates as tensioner with seal ring 5 bottoms, and this design makes between spool 4 and the valve body 1 does not have the slit; Can not reveal; And along with the increase of hydrodynamic pressure, thereby the cone match of spool 4 through seal ring 5 reaches and valve body 1 between also tensioner more, seal degree is better.
The utility model be not limited to above embodiment and conversion.
Claims (8)
1. Swing check valve; Comprise valve body (1); Spool (4), valve seat (2) is installed in the valve rod (6) on the valve body (1); Be fixed in the valve pocket of valve body (1) flap (3) that can rotate around valve rod (6) by valve rod (6); It is characterized in that: the upper semi-circle in circular pipe is crossed in described valve rod (6) axle center, and described flap (3) dorsal part is provided with the equilibrium block (7) with its coaxial rotation, and the center of gravity of said equilibrium block (7) arrives the distance in valve rod (6) axle center greater than flap (3) center of gravity to the distance in valve rod (6) axle center.
2. a kind of Swing check valve according to claim 1 is characterized in that: when said flap (3) was closed, the center of gravity of said equilibrium block (7) was lower than valve rod (6) axle center.
3. a kind of Swing check valve according to claim 1 and 2 is characterized in that: be cone match between said valve seat (2) and the flap (3).
4. a kind of Swing check valve according to claim 3 is characterized in that: said valve seat (2) radial outside wall is provided with the annular groove (22) around its axle center, and said annular groove (22) is communicated in valve body (1) back segment pipe.
5. according to claim 1 or 2 or 4 described a kind of Swing check valves; It is characterized in that: be arranged with seal ring (5) on said spool (4) radial outer wall; Seal ring (5) bottom section is up big and down small taper, and spool (4) is provided with the inclined-plane that cooperates as tensioner with seal ring (5) bottom.
6. a kind of Swing check valve according to claim 3; It is characterized in that: be arranged with seal ring (5) on said spool (4) radial outer wall; Seal ring (5) bottom section is up big and down small taper, and spool (4) is provided with the inclined-plane that cooperates as tensioner with seal ring (5) bottom.
7. according to claim 1 or 2 or 4 described a kind of Swing check valves, it is characterized in that: the sealing surface of said valve seat (2) and flap (3) is a Hardmetal materials.
8. a kind of Swing check valve according to claim 3 is characterized in that: the sealing surface of said valve seat (2) and flap (3) is a Hardmetal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202821758U CN202158234U (en) | 2011-08-04 | 2011-08-04 | Rotary-opening type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202821758U CN202158234U (en) | 2011-08-04 | 2011-08-04 | Rotary-opening type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158234U true CN202158234U (en) | 2012-03-07 |
Family
ID=45765874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202821758U Withdrawn - After Issue CN202158234U (en) | 2011-08-04 | 2011-08-04 | Rotary-opening type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158234U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297277A (en) * | 2011-08-04 | 2011-12-28 | 宣达实业集团有限公司 | Rotary opening type check valve |
| CN103411002A (en) * | 2013-08-07 | 2013-11-27 | 兰州高压阀门有限公司 | Tilting-disc impact-free check valve |
| CN104214375A (en) * | 2014-09-02 | 2014-12-17 | 宣达实业集团有限公司 | HVDC (High Voltage Direct Current) swing check valve |
| CN104676055A (en) * | 2014-12-26 | 2015-06-03 | 上海亚核阀业成套有限公司 | Low-shake low-noise water-hammer-free check valve |
| CN106382377A (en) * | 2016-03-14 | 2017-02-08 | 安徽红星阀门有限公司 | Novel valve |
| US10563777B2 (en) | 2016-03-14 | 2020-02-18 | Anhui Redstar Valve Co., Ltd | Flat bottom valve |
-
2011
- 2011-08-04 CN CN2011202821758U patent/CN202158234U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297277A (en) * | 2011-08-04 | 2011-12-28 | 宣达实业集团有限公司 | Rotary opening type check valve |
| CN103411002A (en) * | 2013-08-07 | 2013-11-27 | 兰州高压阀门有限公司 | Tilting-disc impact-free check valve |
| CN103411002B (en) * | 2013-08-07 | 2015-09-09 | 兰州高压阀门有限公司 | Oblique flap-type is without shock safety check |
| CN104214375A (en) * | 2014-09-02 | 2014-12-17 | 宣达实业集团有限公司 | HVDC (High Voltage Direct Current) swing check valve |
| CN104214375B (en) * | 2014-09-02 | 2018-06-12 | 宣达实业集团有限公司 | high voltage direct current swing check valve |
| CN104676055A (en) * | 2014-12-26 | 2015-06-03 | 上海亚核阀业成套有限公司 | Low-shake low-noise water-hammer-free check valve |
| CN106382377A (en) * | 2016-03-14 | 2017-02-08 | 安徽红星阀门有限公司 | Novel valve |
| US10563777B2 (en) | 2016-03-14 | 2020-02-18 | Anhui Redstar Valve Co., Ltd | Flat bottom valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120307 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |