CN102434690A - Opening-assisting method and opening-assisting device of check valve - Google Patents
Opening-assisting method and opening-assisting device of check valve Download PDFInfo
- Publication number
- CN102434690A CN102434690A CN2011103919141A CN201110391914A CN102434690A CN 102434690 A CN102434690 A CN 102434690A CN 2011103919141 A CN2011103919141 A CN 2011103919141A CN 201110391914 A CN201110391914 A CN 201110391914A CN 102434690 A CN102434690 A CN 102434690A
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- cylinder body
- opening
- opening apparatus
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Abstract
The invention relates to a method of utilizing an opening-assisting device to open and close a check valve and the opening-assisting device adopting the method (attached drawing), which mainly resolve the problems that an opening angle of a valve plate of the check valve is small, local pressure loss of the valve is large and energy of motion is increased in the prior art. The opening-assisting device of the check valve is characterized in that a cylinder body is installed in the middle portion of a short tube, a hollow piston and a piston rod are arranged in the cylinder body, a crankshaft, a double-crank and a connecting rod are disposed outside the cylinder body, the connecting rod is led to be connected with a valve shaft of the check valve so as to work jointly (the source of the energy of motion is water torque generated by flow media in a pipeline) so that the opening angle of the valve plate is increased, flow resistance coefficient is reduced, and the weight of a counter weight is led to be increased when the valve plate is closed so as to ensure reliable closing of the valve plate.
Description
Technical field
The present invention relates to the opening apparatus that helps that a kind of utilization helps opening apparatus to increase the method for safety check opening angle and uses this method.
Background technique
Domestic safety check commonly used has Tiny Drag Slow Shut Check Valves, DRV, up-down (vertical) safety check, Swing check valve etc. at present.Its unlatching, close and be waterpower and operate completion automatically, medium takes place easily flow backwards, water hammering phenomenon and the pump counter-rotating accident that exceeds the speed limit.For addressing these problems and have a collection of new safety check to occur, like Butterfly Type Nonslam Check etc.To guarantee unlatching, to close steady, safety, prevent that medium counter flow from producing the generation of water hammering phenomenon and water pump hypervelocity counter-rotating accident.But still have following point: 1, the media flow resistance is big in the pipeline, and it is little to receive weight and damping oil cylinder to influence the valve plate opening angle.Though 2 also can increase the aperture of unlatching, closure member through setting up counterweight, too big like counterweight, influence valve closing.How overcoming above-mentioned difficult point is urgent problem.
Summary of the invention
The present invention solves mainly that the safety check valve plate opening angle that exists in the existing technology is little, and the valve local pressure loss is big, increases the kinetic energy problem.
Address the above problem technological scheme of the present invention and be for reaching: mounting strap helps the short tube of opening apparatus before safety check; The short tube middle part increases cylinder body; Having box type piston and piston rod to adopt in the cylinder body is hinged; And constituting a transmission device with outer bent axle, double-crank, the connecting rod of cylinder body, the connecting rod the other end has crank to be connected on the safety check valve shaft; Rely on the braking torque that liquid medium produces in the pipeline; The oscillating motion of box type piston, round straight line motion are changed into rotatablely moving of crankshaft; The moving Hydraulic Moment that simultaneously the forward flow medium is produced affacts on the valve plate; Two torques overcome the gravitational moment of valve plate, weight jointly, and valve plate is opened automatically, and medium passes through.When medium stops to flow, pressure reduces gradually or the adverse current valve plate is accomplished closing first quick and back slow.
The present invention compared with prior art has following advantage and beneficial effect: 1, do not increase any power plant, the braking torque that relies on liquid medium to produce drives and helps opening apparatus to open, close valve plate, has saved the time greatly, manpower, kinetic energy.2, with box type piston (slide block), bent axle, double-crank, connecting rod the linear reciprocating motion and two moments that rotatablely move are superposeed; The weight of safety check weight is strengthened; Guarantee valve plate first quick and back slow two stages close, also prevented water hammer that medium counter flow produces and since the accident that the counter-rotating of pump hypervelocity causes take place.3, the torque that rotatablely moves and produce of the straight reciprocating motion of cylinder body hollow core piston and bent axle; Change into the torque of safety check valve shaft, two torques overcome the kinetic moment of valve plate and weight jointly, and valve plate is opened automatically; Aperture increases and reduces flow resistance coefficient, reaches energy-saving effect.
Description of drawings:
Describe the present invention below in conjunction with accompanying drawing
Accompanying drawing 1, be that the present invention helps opening apparatus and safety check combination schematic representation
Accompanying drawing 2, be to help the opening apparatus schematic representation in the accompanying drawing 1
Accompanying drawing 3, be 1 to be connected schematic representation in the accompanying drawing 1 with 2 driving mechanisms
In the accompanying drawing 1: 1, help opening apparatus 2, safety check
In the accompanying drawing 2: 3, short tube 4, cylinder body
In the accompanying drawing 3: 5, liquid medium 6, piston rod 7, box type piston 8, crank 9, bent axle 10, crank 11, connecting rod 12, crank 13, valve shaft 14, weight 15, valve plate
Embodiment:
In the accompanying drawing 3; After pump or fan started, liquid medium 5 got into and helps opening apparatus short tube 3 in the pipeline, flows into the cavity of resorption of cylinder body 4; Driving piston rod 6 through box type piston 7 does reciprocating linear motion; And with the oscillating motion of piston, linear reciprocating motion through crank 8, bent axle 9, change into and rotatablely move, be transformed into valve shaft 13 through crank 10, connecting rod 11, crank 12 again and form torques, the moving Hydraulic Moment that produces of the medium of forward flow also affacts on the valve plate 15 simultaneously; Two torques have overcome the gravitational moment of valve plate 15 and weight 14 jointly, and valve plate is opened automatically.Flowing medium pressure reduces gradually in pipeline, and under the gravitational moment and the effect of reflux medium pressure of valve plate 15 and weight 14, two stages that valve plate is accomplished first quick and back slow under the control of the vertical hammer 14 of damping oil cylinder close.
Claims (8)
- A safety check help the extraction of root, when it is characterized in that the pump or fan starting, help opening apparatus to utilize pipeline inner fluid pressure medium in airtight cylinder body, to transmit energy, linear reciprocating motion be converted into rotatablely move.
- 2. according to the said method of claim 1, it is characterized in that, in the said cylinder body that helps opening apparatus short tube middle part box type piston (slide block), piston rod are housed.
- 3. according to the said method of claim 1, it is characterized in that the linear reciprocating motion of said piston is through cylinder body inside crank and cylinder body outer crankshaft, double-crank changes into and rotatablely moves.
- 4. according to the said method of claim 1, it is characterized in that, adopt articulated manner to be connected between said piston and the piston rod.
- 5. the opening apparatus that helps that is used to realize the said method of claim 1 comprises short tube, cylinder body, hydraulic gear, cross crank gear and connecting rod.
- 6. safety check according to claim 5 helps opening apparatus, it is characterized in that, the described opening apparatus short tube diameter that helps is identical with the valve body caliber.
- Safety check according to claim 5 help opening apparatus, it is characterized in that described to help opening apparatus short tube middle part diameter of cylinder be piston diameter, according to the liquid medium working pressure, weight moment, valve plate gravitational moment are calculated and are obtained.
- 8. safety check according to claim 5 helps opening apparatus, it is characterized in that, the outer cross crank gear of said cylinder body is connected with the valve shaft of safety check, utilizes the dead center position, makes planar conllinear of its rod member, and the valve plate opening angle is maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103919141A CN102434690A (en) | 2011-12-01 | 2011-12-01 | Opening-assisting method and opening-assisting device of check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103919141A CN102434690A (en) | 2011-12-01 | 2011-12-01 | Opening-assisting method and opening-assisting device of check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102434690A true CN102434690A (en) | 2012-05-02 |
Family
ID=45982929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103919141A Pending CN102434690A (en) | 2011-12-01 | 2011-12-01 | Opening-assisting method and opening-assisting device of check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434690A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344445A (en) * | 2013-08-08 | 2015-02-11 | 丁德厚 | One-key control intelligent extractor hood |
| CN104429349A (en) * | 2014-11-28 | 2015-03-25 | 安顺市虹翼特种钢球制造有限公司 | Swinging transmission device for green tea picking mechanism |
| CN104472107A (en) * | 2014-11-28 | 2015-04-01 | 安顺市虹翼特种钢球制造有限公司 | Swinging transmission device for green tea picking mechanism |
| CN105570513A (en) * | 2016-02-24 | 2016-05-11 | 天津市北方阀门控制设备有限公司 | Torque control rectilinear movement transferring mechanism used for electric valve device |
| CN106715985A (en) * | 2014-09-22 | 2017-05-24 | 流动科技株式会社 | Check valve capable of controlling fast and slow closing by means of variable throttle |
| CN108825861A (en) * | 2018-09-04 | 2018-11-16 | 瑞安市阀门厂 | A kind of multifunction valve door drive of part revolution |
| CN109323026A (en) * | 2018-08-24 | 2019-02-12 | 河南环发工程有限公司 | A kind of underground swing type draws water recharge automatic transfer valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3789872A (en) * | 1972-05-31 | 1974-02-05 | R Elliott | Hydraulic control means for check valves |
| CN2469279Y (en) * | 2001-03-12 | 2002-01-02 | 孙玉峰 | Emergency check valve with auxiliary opening device |
| CN1940364A (en) * | 2005-09-28 | 2007-04-04 | 黄作兴 | Auxiliary shutter of check valve |
| JP2010276057A (en) * | 2009-05-26 | 2010-12-09 | Dmw Corp | Swing check valve |
| CN201818881U (en) * | 2010-07-08 | 2011-05-04 | 刘颖 | Gas cut-off valve |
-
2011
- 2011-12-01 CN CN2011103919141A patent/CN102434690A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3789872A (en) * | 1972-05-31 | 1974-02-05 | R Elliott | Hydraulic control means for check valves |
| CN2469279Y (en) * | 2001-03-12 | 2002-01-02 | 孙玉峰 | Emergency check valve with auxiliary opening device |
| CN1940364A (en) * | 2005-09-28 | 2007-04-04 | 黄作兴 | Auxiliary shutter of check valve |
| JP2010276057A (en) * | 2009-05-26 | 2010-12-09 | Dmw Corp | Swing check valve |
| CN201818881U (en) * | 2010-07-08 | 2011-05-04 | 刘颖 | Gas cut-off valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344445A (en) * | 2013-08-08 | 2015-02-11 | 丁德厚 | One-key control intelligent extractor hood |
| CN106715985A (en) * | 2014-09-22 | 2017-05-24 | 流动科技株式会社 | Check valve capable of controlling fast and slow closing by means of variable throttle |
| CN104429349A (en) * | 2014-11-28 | 2015-03-25 | 安顺市虹翼特种钢球制造有限公司 | Swinging transmission device for green tea picking mechanism |
| CN104472107A (en) * | 2014-11-28 | 2015-04-01 | 安顺市虹翼特种钢球制造有限公司 | Swinging transmission device for green tea picking mechanism |
| CN105570513A (en) * | 2016-02-24 | 2016-05-11 | 天津市北方阀门控制设备有限公司 | Torque control rectilinear movement transferring mechanism used for electric valve device |
| CN105570513B (en) * | 2016-02-24 | 2017-12-01 | 天津市北方阀门控制设备有限公司 | A kind of direct torque linear motion conversion mechanism for electric device for valve |
| CN109323026A (en) * | 2018-08-24 | 2019-02-12 | 河南环发工程有限公司 | A kind of underground swing type draws water recharge automatic transfer valve |
| CN108825861A (en) * | 2018-09-04 | 2018-11-16 | 瑞安市阀门厂 | A kind of multifunction valve door drive of part revolution |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120502 |