CN2284326Y - Butterfly slowly-closed check valve - Google Patents
Butterfly slowly-closed check valve Download PDFInfo
- Publication number
- CN2284326Y CN2284326Y CN 96238851 CN96238851U CN2284326Y CN 2284326 Y CN2284326 Y CN 2284326Y CN 96238851 CN96238851 CN 96238851 CN 96238851 U CN96238851 U CN 96238851U CN 2284326 Y CN2284326 Y CN 2284326Y
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- Prior art keywords
- piston
- flap
- piston cylinder
- valve body
- valve
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- Expired - Fee Related
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Abstract
The utility model relates to a butterfly slowly-closed check valve used in liquid delivery pipelines. The utility model is characterized in that one end of a valve body is provided with a piston cylinder sleeve barrel and an inlet which is corresponding to the peripheral shape of a valve clack, the other end is provided with an outlet, and the middle part of the valve body is in a drum shape. A piston cylinder is arranged in the piston cylinder sleeve barrel, and one end of the piston cylinder is provided with a piston rod hole and the other end is provided with a sealing cover. A piston which is provided with a piston rod and a damping hole and a piston release spring are arranged in the piston cylinder, and a damping plate which is matched with the piston rod is arranged on the valve clack.
Description
The utility model relates to a kind of hammer buffer valve that disappears that is used for liquid transmission pipeline.
It is reported, existing buffer valve, its valve body generally is the valve body that has mount inlet and mount inlet sealing cover, therefore have the deficiency that volume is big, cost is high, and its Slow Close mechanism all is hydraulic control slow closing mechanisms, this hydraulic control slow closing mechanism is that the liquid medium that pressure is arranged by the valve of flowing through enters in the Slow Close piston cylinder that is located on the valve body, the cylinder inner carrier is pushed out stretches to valve inner, when pump shuts down, flap just can lean on the weight of self and the pressure of reflux fluid to drop on the piston, makes piston get back to the origin-location under controlled condition.And in fact piston can not playback fully, causes flap to be not closed completely, and the water pump reversing does not stop, and its reason is when termination of pumping, in the valve body and in the piston cylinder pressure is arranged all, causes the liquid medium at piston rear portion all not flow back in the body.In addition, this valve only limits to use in the fluid pipeline that circulation is cleaned, the liquid medium of valve is to contain the water of impurity or other corrosive liquid etc. directly to enter in the piston cylinder if flow through in the pipeline, the control valve pipe will appear because of the existence of impurity in the liquid stopping up, pull piston/cylinder, the sealability of corrosion failure Slow Close mechanism causes faults such as the Slow Close function is out of control, has therefore limited the application of this class valve.During outdoor application, be water in the winter time, then very easily make the water freezing in the liquid in-out pipe of Slow Close mechanism, cause Slow Close mechanism ineffective as what carry in the pipeline.
The purpose of this utility model is, in order to overcome above-mentioned deficiency, provide a kind of have reasonable in design, simple in structure, volume is little, performance is safe and reliable, operate steadily, long service life, be applicable to various conveying liquid mediums, be not subjected to working environment restriction and close effective, the high voltage bearing butterfly that can thoroughly the eliminate water hammer hammer buffer valve that disappears.
Technical solution of the present utility model is, in order to dwindle valve volume, valve body made an end have flap axle axis hole, and with import and piston cylinder sleeve that the flap peripheral shape adapts, the other end has outlet, and the centre is the valve body of drum type.Can not playback fully in order to solve piston, the problem that causes flap to be not closed completely realizes thoroughly eliminating the purpose of water hammer, and existing hydraulic control slow closing mechanism is improved, promptly be provided with an end and have the piston rod hole in the piston cylinder sleeve, the other end is provided with the piston cylinder of sealing cover.In piston cylinder, be provided with the piston and the piston return spring that have piston rod and damping hole.On flap, be provided with the damping plate that cooperates with piston rod.
The utility model and background technique compare, owing to cancelled mount inlet and the mount inlet sealing cover on the valve body, and valve body has been made the middle valve body that is drum type, and therefore dwindled the volume of valve body widely.Again because hydraulic control slow closing mechanism is improved, therefore not only simplify the structure, reduced cost, and have reliable performance, operate steadily long service life, do not carried advantages such as liquid medium and working environment restriction, and solved piston and can not playback fully, the problem that causes flap to be not closed completely has realized the purpose of thorough elimination water hammer.
Below in conjunction with accompanying drawing, describe a specific embodiment of the present utility model in detail.
Accompanying drawing is a structural representation of the present utility model.
Referring to accompanying drawing, valve body 3 is that one one end has flap axle axis hole, and with import and piston cylinder sleeve 15 that the flap periphery conical surface adapts, the other end has outlet, and the centre is the valve body of drum type.In flap axle axis hole, flap axle 4 is housed.Circular flap 7 and counterweight hammer stem 2 that periphery is the conical surface are housed on flap axle 4, on counterweight hammer stem 2, are fastened with counter weight by screw.On the periphery of flap 7, have seal ring and seal ring pressing plate breach, in seal ring and seal ring pressing plate breach, rubber seal 5 and seal ring pressing plate 6 are housed, seal ring pressing plate 6 is fastened on the flap 7 by screw, and with rubber seal 5 clampings on flap 7.On flap 7, be welded with the damping plate 17 that cooperates with piston rod 9.In the piston cylinder sleeve 15 of valve body 3 end is housed and has the piston rod hole, the other end is screwed with sealing cover 12, and outer side wall has the piston cylinder 16 of flange 10.Piston cylinder 16 is fastened on the valve body 3 by screw.Inwall car in the piston rod hole has o-ring groove, and is embedded with rubber seal 8 at o-ring groove.The piston 14 and the piston return spring 11 that have piston rod 9 and damping hole 13 are housed in piston cylinder 16.
During use, piston cylinder is filled oil, and this valve is installed in the liquid transmission pipeline.When pump started, flap was just being opened under the positive pressure of fluid and under the cooperation of counterweight hammer stem smoothly, and this moment, piston was pushed forward by return spring, made the oil of piston front portion flow to the rear portion of piston by damping hole.When pump quits work, liquid just can flow backwards and promote flap and move to closing direction in the pipeline, when the damping plate on the flap contacts piston rod, flap is just slowly closed under the reaction force of return spring and oil, this moment, piston was pushed down, make the oil at piston rear portion flow to the front portion of piston lentamente, thereby reached the purpose of eliminating water hammer by damping hole.
Claims (1)
1, a kind of butterfly hammer buffer valve that disappears, include the valve body [3] that has flap axle axis hole, be located at and be provided with the flap [7] that periphery is the conical surface and the flap axle [4] of counterweight hammer stem [2] in the flap axis hole, it is characterized in that valve body [3] is that an end has import and the piston cylinder sleeve [15] that adapts with the flap peripheral shape, the other end has outlet, the centre is the valve body of drum type, in piston cylinder sleeve [15], be provided with an end and have the piston rod hole, the other end is provided with the piston cylinder [16] of sealing cover [12], in piston cylinder [16], be provided with the piston [14] and the piston return spring [11] that have piston rod [9] and damping hole [13], in flap [7]] on be provided with the damping plate [17] that cooperates with piston rod [9].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238851 CN2284326Y (en) | 1996-10-23 | 1996-10-23 | Butterfly slowly-closed check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96238851 CN2284326Y (en) | 1996-10-23 | 1996-10-23 | Butterfly slowly-closed check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2284326Y true CN2284326Y (en) | 1998-06-17 |
Family
ID=33914048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96238851 Expired - Fee Related CN2284326Y (en) | 1996-10-23 | 1996-10-23 | Butterfly slowly-closed check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2284326Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309980C (en) * | 2002-01-11 | 2007-04-11 | 林润泉 | Flow-guiding non-return exhaust valve |
| CN100353103C (en) * | 2004-11-18 | 2007-12-05 | 中国核动力研究设计院 | Full flow buffer check valve |
| CN101915325A (en) * | 2010-07-01 | 2010-12-15 | 宁波凯波集团有限公司 | One-way valve |
| CN103062448A (en) * | 2012-12-29 | 2013-04-24 | 浙江盾安阀门有限公司 | Anti-leaking check valve |
| CN103775691A (en) * | 2014-01-20 | 2014-05-07 | 武汉大禹阀门股份有限公司 | Self-washing damping and wear-resistant rotation type check valve |
| CN103836230A (en) * | 2014-02-21 | 2014-06-04 | 武汉圣禹排水系统有限公司 | Lifting type closure swing check valve |
| CN103851235A (en) * | 2014-02-21 | 2014-06-11 | 武汉圣禹排水系统有限公司 | Rotary interception swing check valve |
| CN105972231A (en) * | 2016-07-05 | 2016-09-28 | 天津国际机械有限公司 | Heavy punch butterfly valve closing angle adjustor with spring buffering structure |
-
1996
- 1996-10-23 CN CN 96238851 patent/CN2284326Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309980C (en) * | 2002-01-11 | 2007-04-11 | 林润泉 | Flow-guiding non-return exhaust valve |
| CN100353103C (en) * | 2004-11-18 | 2007-12-05 | 中国核动力研究设计院 | Full flow buffer check valve |
| CN101915325A (en) * | 2010-07-01 | 2010-12-15 | 宁波凯波集团有限公司 | One-way valve |
| CN103062448A (en) * | 2012-12-29 | 2013-04-24 | 浙江盾安阀门有限公司 | Anti-leaking check valve |
| CN103062448B (en) * | 2012-12-29 | 2014-01-08 | 浙江盾安阀门有限公司 | Anti-leaking check valve |
| CN103775691A (en) * | 2014-01-20 | 2014-05-07 | 武汉大禹阀门股份有限公司 | Self-washing damping and wear-resistant rotation type check valve |
| CN103775691B (en) * | 2014-01-20 | 2016-04-20 | 武汉大禹阀门股份有限公司 | From flushing damping and wear-resistant screw-lift type safety check |
| CN103836230A (en) * | 2014-02-21 | 2014-06-04 | 武汉圣禹排水系统有限公司 | Lifting type closure swing check valve |
| CN103851235A (en) * | 2014-02-21 | 2014-06-11 | 武汉圣禹排水系统有限公司 | Rotary interception swing check valve |
| CN105972231A (en) * | 2016-07-05 | 2016-09-28 | 天津国际机械有限公司 | Heavy punch butterfly valve closing angle adjustor with spring buffering structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |