CN102562616B - Pneumatic energy-saving piston-balanced water pump control valve - Google Patents
Pneumatic energy-saving piston-balanced water pump control valve Download PDFInfo
- Publication number
- CN102562616B CN102562616B CN201210005166.3A CN201210005166A CN102562616B CN 102562616 B CN102562616 B CN 102562616B CN 201210005166 A CN201210005166 A CN 201210005166A CN 102562616 B CN102562616 B CN 102562616B
- Authority
- CN
- China
- Prior art keywords
- valve
- lower cover
- water pump
- piston
- gap
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 230000000694 effects Effects 0.000 claims abstract description 11
- 230000007306 turnover Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Fluid-Driven Valves (AREA)
- Details Of Valves (AREA)
Abstract
The present invention discloses a kind of Pneumatic energy-saving piston-balanced water pump control valve, include valve body, lower cover, lower seal, lower valve base, valve gap, the device of valve shaft and the motion of control valve shaft axial stretching, valve gap is placed on valve body and valve gap puts in one section of lid in valve body, valve shaft injects in valve gap from outer activity, lower cover to be arranged in valve body and to be arranged on valve the tip of the axis, lower valve base is arranged on the passage of body cavity, lower seal to be located at bottom lower cover on excircle, on valve gap, movable sliding sleeve has sleeve, sleeve and valve gap lid fitted seal, one end and the lower cover of sleeve are sealed connected together, lower cover is provided with the through hole of through runner and barrel bore, beneficial effect: the resistance during keying of valve is very little, thus only need very little power just energy switch valve, save the energy needed for switch valve, lower cover plays the effect of water conservancy diversion, prevent from producing eddy current in the vault chamber below lower cover, the existence because of eddy current is avoided to cause fluid pressure loss.
Description
Technical field:
The present invention relates to a kind of Pneumatic energy-saving piston-balanced water pump control valve.
Background technique:
In the fluid pipe network of water supply and sewerage system, the roadability of the Centrifugal water pump valve requiring to switch off the pump after water outlet realizes zero delivery and starts, during termination of pumping, the maximum inversion speed of water pump must not be greater than 1.2 times of water pump rated speed, the time exceeding rated speed must not more than 2min, and the startup of water pump and must not stop and causing impact of water hammer to pipe-line system.In order to realize above-mentioned three requirements, common situation is, adopts at the water outlet of water pump the valve being called " control valve for water pump ".Existing control valve for water pump structure as shown in Figure 1, it is made up of the extension member 04 of valve body 01, valve gap 02, valve seat 03 and a similar inverted T-shaped, lower cover 05 is provided with again bottom inverted T-shaped extension member 04, lower cover lower circumference edge is provided with seal ring 06, valve seat 03 is located in valve body 01, during closedown, inverted T-shaped extension member 04 presses to valve seat 03, until valve seat 03 pushed down by the seal ring 06 on lower cover 05.The control valve for water pump of this structure is when opening, due to the existence of inverted T-shaped moulding, when causing opening, inverted T-shaped extension member 04 is subject to very large downforce resistance, and when closing, the pressure produced when can be subject to water pump driving fluid hinders, close and also need to overcome huge resistance, so no matter be open or close, consume energy all very much.When this control valve for water pump is closed, requirement at a slow speed first fast can not be realized, close and can cause too soon producing water hammer, close and medium can be caused too slowly to flow backwards, cause the maximum inversion speed of water pump during termination of pumping to be greater than 1.2 times of water pump rated speed, exceed the time of rated speed more than 2min.And the flow resistance of this control valve for water pump is large, the pressure loss is large, and existing control valve for water pump is due to structural imperfection, the intensity of its body of rod is little, and inverted T-shaped extension member only has two states, or opens completely, close completely, arbitrarily can not stop on its movement locus, can not Flow-rate adjustment be realized.In addition when the front and back of control valve for water pump do not have pressure difference, or when pressure difference is too small, valve can not be closed.
Summary of the invention:
The object of the invention is the shortcoming in order to overcome above-mentioned prior art, providing a kind of and opening and closing that resistance is little, fluid by time the pressure loss little, the Pneumatic energy-saving piston-balanced water pump control valve of energy-conserving and environment-protective.
Goal of the invention of the present invention can be realized by following technological scheme: Pneumatic energy-saving piston-balanced water pump control valve, include valve body, lower cover, lower seal, lower valve base, valve gap, the device of valve shaft and the motion of control valve shaft axial stretching, valve gap is placed on valve body and valve gap puts in one section of lid in valve body, valve shaft injects in valve gap from outer activity, lower cover to be arranged in valve body and to be arranged on valve the tip of the axis, lower valve base is arranged on the passage of body cavity, lower seal to be located at bottom lower cover on excircle, on valve gap, movable sliding sleeve has sleeve, sleeve and valve gap lid fitted seal, one end and the lower cover of sleeve are sealed connected together, lower cover is provided with the through hole of through runner and barrel bore.
The device that control valve shaft axle makes fore and aft motion is pneumatic linear actuator, and pneumatic linear actuator is arranged on valve gap, and main piston and the valve shaft of pneumatic linear actuator are fixed together, and in pneumatic linear actuator cylinder body, the chamber of main piston both sides is connected with atmospheric control respectively.
Be extended with damper piston at main piston towards the side of valve body, on the wall body of valve body one end, be correspondingly provided with the reaming section injected for damper piston at pneumatic linear actuator cylinder body.
The two-position-five-way solenoid valve controlling main piston two side cavity turnover gas is provided with in atmospheric control.
Guide ring is provided with in the bottom of lower cover.
Compared with prior art, the present invention has following beneficial effect: the resistance during keying of valve is very little, thus only need very little power just energy switch valve, save the energy needed for switch valve, energy-conserving and environment-protective, lower cover plays the effect of water conservancy diversion, prevents from producing eddy current in the vault chamber below lower cover, avoids the existence because of eddy current to cause fluid pressure loss.
Accompanying drawing illustrates:
Fig. 1 is the sectional structure chart of prior art control valve for water pump;
Fig. 2 is the structural drawing of invention Pneumatic energy-saving piston-balanced water pump control valve closed condition;
Fig. 3 is the enlarged view of part A in Fig. 2;
Fig. 4 is the enlarged view of part B in Fig. 2;
Fig. 5 is the enlarged view of C part in Fig. 2;
Fig. 6 is the structural drawing of Pneumatic energy-saving piston-balanced water pump control valve opening state of the present invention;
Fig. 7 is the enlarged view of part A in Fig. 6;
Fig. 8 is the enlarged view of part B in Fig. 6;
Fig. 9 is the enlarged view of C part in Fig. 6.
Embodiment:
Below in conjunction with accompanying drawing, this utility patent is described further.
The energy-conservation main piston balanced water pump control valve of air-driven type of the present embodiment, include valve body 1, lower cover 2, lower seal 3, lower valve base 4, valve gap 5, the device of valve shaft 6 and the motion of control valve shaft 6 axial stretching, valve gap 5 is placed on valve body 1 and valve gap 5 puts in one section of lid 5a in valve body 1, valve shaft 6 injects in valve gap 5 from outer activity, lower cover 2 to be arranged in valve body 1 and to be arranged on the end of valve shaft 6, lower valve base 4 is arranged on the passage of body cavity, lower seal 3 to be located at bottom lower cover 2 on excircle, on valve gap 5, movable sliding sleeve has sleeve 7, sleeve 7 and valve gap 5 lid fitted seal, one end and the lower cover 2 of sleeve 7 are sealed connected together, here lower cover 2 can play the effect of water conservancy diversion, prevent from producing eddy current in vault chamber, below, avoid causing fluid pressure loss, sleeve 7 inserts on one end outer side wall in valve gap 5 and be provided with upper valve base 8, the bottom interior wall place of valve gap 5 is provided with seal ring 9, lower cover 2 is provided with the through hole 10 of through runner and barrel bore 71, when driving lower cover 2 to press to lower valve base 4, sleeve 7 is along with the motion of lower cover 2 is by pull-out in valve gap 5, fluid can enter barrel bore 71 by via through holes 10, along with pressing down of lower cover 2, barrel bore 71 volume progressively increases, until the lower seal 3 of lower cover 2 pushes down lower valve base 4, upper valve base 8 pushes down the upper seal ring 9 in valve gap 5, at this moment, the parts really playing barrier fluid flowing are the sidewall of sleeve 7, and lower cover 2 rises and in the process that presses down, the resistance that sleeve 7 sidewall will overcome is very little, order is very little to valve opening and closing required drive.Guide ring 11 is provided with in the bottom of lower cover 2.
The device that control valve shaft 6 axle makes fore and aft motion is pneumatic linear actuator 12, pneumatic linear actuator 12 is arranged on valve gap 5, main piston 13 and the valve shaft 6 of pneumatic linear actuator 12 are fixed together, in pneumatic linear actuator 12 cylinder body, the chamber 14,15 of main piston 13 both sides is connected with atmospheric control respectively, be extended with damper piston 16 at main piston 13 towards the side of valve body 1, on the wall body of valve body 1 one end, be correspondingly provided with the reaming section 17 injected for damper piston 16 at pneumatic linear actuator cylinder body.Atmospheric control is by downtake pipe 18, suction tude 19, second exhaust pipe 20, first needle stop valve 21, second needle stop valve 22, 3rd needle stop valve 23, two-position-five-way solenoid valve 24 and one-way valve 25 are formed, downtake pipe 18, suction tude 19, second exhaust pipe 20 is connected to one end of two five-way electromagnetic valves 24, the other end of two five-way electromagnetic valves 24 draws two-way, respectively with the 13 liang of side cavity 14 of main piston in pneumatic linear actuator cylinder body, 15 connect, first needle stop valve 21 is set between downtake pipe 18 and two five-way electromagnetic valves 24, second needle stop valve 22 is set between second exhaust pipe 20 and two five-way electromagnetic valves 24, pneumatic linear actuator 12 is connected near being provided with two pipelines between the chamber 14 and the bottom of reaming section 17 of valve body 1 side, first pipeline 26 is provided with the 3rd needle stop valve 23, second pipeline 27 is connected with two five-way electromagnetic valves 24 and on the pipeline of valve body 1 one side cavity 14, is being provided with one-way valve 25 towards pneumatic linear actuator 12, here two-way pipeline is all to make damper piston 16 can realize lifting.
Employing piston type drives, pressurized air is as driven medium, also opening and closing action can be carried out when pressure reduction is zero before and after valve, can do first fast during valve closing, two benches is closed at a slow speed again, the speed opened and closed can adjust, and the generation hammered into shape to prevent water and water pump velocity reversion exceed requirement.If piston actuated medium adopts clear water, comparatively speaking, glassware for drinking water has incompressibility, just relatively slow to the driving effect of piston, does not reach the requirement of quick closedown.And piston actuated medium adopts pressurized air, because air has compressibility (i.e. elasticity), therefore just quick closedown can be accomplished to the driving effect of piston.In addition, adopt pressurized air as driven medium, can be free from environmental pollution, the not impact of climate ambient temperature.And water can freeze in cold climates, the normal work of control valve for water pump can be affected.Owing to have employed external pressurized air as power source, before and after valve pressure reduction very little or be zero time compressed-air actuated elastic potential energy also can be relied on to carry out opening and closing action, thus do not opened and closed for traditional control valve for water pump need before and after the constraint of pressure difference.Lower cover 2 can be controlled in addition and be in any position in valve body 1, thus play flow regulating function, piston type drives can ensure that the Lift of valve lower cover 2 is greater than 1/4 of valve nominal size, namely the unlatching Curtain area of lower cover 2 is greater than the sectional area of valve nominal size pipeline, thus ensure that the overflow section of valve amasss the sectional area being greater than corresponding nominal size pipeline, reduce the pressure loss flowing through the fluid of valve.
Valve adopts equilibrium principle, namely the effect of sleeve 7 is utilized, during valve closing, fluid is full of barrel bore 71 by the through hole 10 on lower cover 2, make a concerted effort to equal zero in the footpath that now medium acts on sleeve 7 and valve gap 5, and act on the upper and lower chamber of lower cover 2 make a concerted effort be close to zero, the axial force that pressure fluid acts on open-shut device balances mutually, thus make the opening and closing power of valve very little, when valve opening and closedown, required work is very little, is only equivalent to 1/25 ~ 1/15 of traditional hydraulic control valve.
Adopt, in the bottom of open-shut device, lower cover 2 is set as guide plate, get rid of in the vault chamber below lower cover 2 pressure loss producing whirlpool and cause, improve the anti-cavitation performance of valve.
Short tooth-like guide ring 11 is adopted to carry out guiding of taking a seat, media flow is hindered without any obstacle in lower valve base 4, change traditional leading truck guiding pin long or need overarm brace be established to lead with slide-bar on lower valve base 4, the shortcoming that this mode of structure flow resistance is large, the pressure loss is large.
Adopt two five-way electromagnetic valves 24 to carry out the commutation control of piston actuated, achieve the coordinated signals of valve and water pump, during water pump accident power-off, solenoid valve commutates, and achieves valve and automatically closes, make valve have check function.
Adopt two main piston (i.e. cylinder main piston 13 and damper piston 16) work, main piston 13 is utilized to promote valve shaft 6 at the leading portion of closing, and the back segment of closing increases the motion that valve shaft 6 stablized further by many damper pistons 16 again, thus can do when achieving valve closing first fast, then two benches is closed at a slow speed.And pass through the needle stop valve 21,22,23 on pilot line and adjust, the speed adjustment of valve opening and closing velocity can be realized, meet the requirement of different operating mode when water pump opens and closes.By passing in and out the control realization of the tolerance flow regulating function of valve in piston cylinder.
The present invention is novel in design, structure is ingenious, multiple functional, adopts equilibrium principle, gas piston formula drives, compared with the control valve for water pump of existing structure, required keying steering force is 1/25 ~ 1/15 of existing structure control valve for water pump, and hydraulic loss is very little, 1/10 of existing control valve for water pump, there is significant especially energy-saving effect, if applied, fabulous economic benefit and social benefit will be obtained
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore every content not departing from technical solution of the present invention, the equivalence done according to the shape of the present invention, structure and principle change, all should be covered by protection scope of the present invention.
Claims (3)
1. Pneumatic energy-saving piston-balanced water pump control valve, include valve body, lower cover, lower seal, lower valve base, valve gap, the device of valve shaft and the motion of control valve shaft axial stretching, valve gap is placed on valve body and valve gap puts in one section of lid in valve body, valve shaft injects in valve gap from outer activity, lower cover to be arranged in valve body and to be arranged on valve the tip of the axis, lower valve base is arranged on the passage of body cavity, lower seal to be located at bottom lower cover on excircle, it is characterized in that: on valve gap, movable sliding sleeve has sleeve, sleeve and valve gap lid fitted seal, one end and the lower cover of sleeve are sealed connected together, lower cover is provided with the through hole of through runner and barrel bore, the device that control valve shaft axle makes fore and aft motion is pneumatic linear actuator, pneumatic linear actuator is arranged on valve gap, main piston and the valve shaft of pneumatic linear actuator are fixed together, in pneumatic linear actuator cylinder body, the chamber of main piston both sides is connected with atmospheric control respectively, damper piston is extended with towards the side of valve body at main piston, on the wall body of valve body one end, the reaming section injected for damper piston is correspondingly provided with at pneumatic linear actuator cylinder body.
2. Pneumatic energy-saving piston-balanced water pump control valve according to claim 1, is characterized in that: be provided with the two-position-five-way solenoid valve controlling main piston two side cavity turnover gas in atmospheric control.
3. Pneumatic energy-saving piston-balanced water pump control valve according to claim 1, is characterized in that: be provided with guide ring in the bottom of lower cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210005166.3A CN102562616B (en) | 2012-01-09 | 2012-01-09 | Pneumatic energy-saving piston-balanced water pump control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210005166.3A CN102562616B (en) | 2012-01-09 | 2012-01-09 | Pneumatic energy-saving piston-balanced water pump control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102562616A CN102562616A (en) | 2012-07-11 |
| CN102562616B true CN102562616B (en) | 2015-09-02 |
Family
ID=46408926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210005166.3A Active CN102562616B (en) | 2012-01-09 | 2012-01-09 | Pneumatic energy-saving piston-balanced water pump control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102562616B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106594294B (en) * | 2016-12-08 | 2019-01-15 | 中国航天空气动力技术研究院 | A kind of vapour-pressure type acceleration switching valve |
| CN107131306B (en) * | 2017-06-28 | 2018-10-12 | 泉州市沪航阀门制造有限公司 | Vortex-free water pump control valve |
| CN107309611B (en) * | 2017-06-28 | 2018-11-20 | 泉州市沪航阀门制造有限公司 | A kind of production method of control valve for water pump |
| CN110500418B (en) * | 2019-08-07 | 2024-04-12 | 安徽省屯溪高压阀门股份有限公司 | Automatic control large-caliber quick-cutting corrugated pipe gate valve |
| CN110645469A (en) * | 2019-11-21 | 2020-01-03 | 常建 | Automatic drainage device for vehicle air pipeline |
| CN111219337B (en) * | 2020-02-14 | 2021-07-09 | 苏州德尔得机电设备有限公司 | Liquid flow type supercharging device |
| CN114151644B (en) * | 2021-12-08 | 2023-09-29 | 吉林省同心热力有限责任公司 | Heating power pipeline control device based on industrial Internet of things |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274263Y (en) * | 1996-01-24 | 1998-02-11 | 中山市达华工贸公司 | Pneumatic reciprocating piston pump |
| US6102071A (en) * | 1996-08-21 | 2000-08-15 | Fisher Controls International, Inc. | Elastomeric element valve |
| CN201155578Y (en) * | 2008-02-19 | 2008-11-26 | 徐鹤 | Hydropower control valve |
| CN201521428U (en) * | 2009-11-13 | 2010-07-07 | 佛山市南海永兴阀门制造有限公司 | Energy-saving piston balanced pump control valve |
| CN202417966U (en) * | 2012-01-09 | 2012-09-05 | 广东永泉阀门科技有限公司 | Pneumatic energy-saving piston balancing water pump control valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4041982A (en) * | 1976-01-09 | 1977-08-16 | Kieley & Mueller, Inc. | Double wall plug control valve |
| US4384592A (en) * | 1980-11-28 | 1983-05-24 | International Telephone And Telegraph Corporation | Low-noise valve trim |
| JPH11125364A (en) * | 1997-10-20 | 1999-05-11 | Ishikawajima Harima Heavy Ind Co Ltd | Opening/closing device for manually operating valve |
| CN201448230U (en) * | 2009-07-24 | 2010-05-05 | 杨玉思 | Y-shaped control valve for magnetic levitation anti-drag water pumps |
| CN201751641U (en) * | 2010-06-08 | 2011-02-23 | 上海冠龙阀门机械有限公司 | Control valve |
-
2012
- 2012-01-09 CN CN201210005166.3A patent/CN102562616B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274263Y (en) * | 1996-01-24 | 1998-02-11 | 中山市达华工贸公司 | Pneumatic reciprocating piston pump |
| US6102071A (en) * | 1996-08-21 | 2000-08-15 | Fisher Controls International, Inc. | Elastomeric element valve |
| CN201155578Y (en) * | 2008-02-19 | 2008-11-26 | 徐鹤 | Hydropower control valve |
| CN201521428U (en) * | 2009-11-13 | 2010-07-07 | 佛山市南海永兴阀门制造有限公司 | Energy-saving piston balanced pump control valve |
| CN202417966U (en) * | 2012-01-09 | 2012-09-05 | 广东永泉阀门科技有限公司 | Pneumatic energy-saving piston balancing water pump control valve |
Non-Patent Citations (1)
| Title |
|---|
| 吴振顺.气动执行元件.《气压传动与控制》.哈尔滨工业大学出版社,1998,24-25. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102562616A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102562616B (en) | Pneumatic energy-saving piston-balanced water pump control valve | |
| CN202417966U (en) | Pneumatic energy-saving piston balancing water pump control valve | |
| CN204226809U (en) | A kind of stop valve structure | |
| CN201057155Y (en) | Hydraulic flashboard type stuff pump control valve | |
| CN220079924U (en) | Gate convenient to adjust for water use | |
| CN206747568U (en) | A kind of die casting machine switching molding hydraulic circuit system | |
| CN106015146B (en) | A kind of built-in pressure distributor | |
| CN208845449U (en) | A kind of regulating valve electrohydraulic actuator of additional turn-off function module | |
| CN201288883Y (en) | Hydraulic controlled diaphragm type multifunctional water pump control valve | |
| CN103775691B (en) | From flushing damping and wear-resistant screw-lift type safety check | |
| CN206458833U (en) | A kind of electromagnetic pilot-operated hydraulic two-way plug-in installed | |
| CN102235525A (en) | Hydraulic control three-way valve | |
| CN106763934B (en) | Double-drive quick-closing lifting type non-return and stop combined valve | |
| CN205533461U (en) | Shield that installs energy storage ware additional constructs machine screw conveyer back brake door control system | |
| CN215409474U (en) | Hydraulic hoist of miter gate capable of emergency operation under long-time water immersion working condition | |
| CN205715034U (en) | Bulky refuse station push pedal impact-reducing hydraulic system | |
| CN205779965U (en) | A kind of hydraulic control system of hydraulic dumping device | |
| CN214662435U (en) | Electric control energy-saving valve | |
| CN204472782U (en) | A kind of piston type pneumatic control shutoff valve | |
| CN208455583U (en) | A kind of floating dynamical type gate | |
| CN103939649B (en) | Self-operated type stop valve | |
| CN104832659B (en) | A kind of micro- pump control valve that blocks water of swash plate | |
| CN206280548U (en) | A kind of lift check of dual drive quick closedown and cut-off combination valve | |
| CN203585509U (en) | Direct flow piston type guide floating ball valve | |
| CN2643104Y (en) | Slow-opening quick-closing energy saving check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Jianming Inventor after: Li Biao Inventor before: Chen Jianming |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN JIANMING TO: CHEN JIANMING LI BIAO |
|
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Jianming Inventor after: Li Biao Inventor after: Wu Baimin Inventor after: Liang Jianlin Inventor before: Chen Jianming Inventor before: Li Biao |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN JIANMING LI BIAO TO: CHEN JIANMING LI BIAO WU BAIMIN LIANG JIANLIN |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Pneumatic energy-saving piston-balanced water pump control valve Effective date of registration: 20171108 Granted publication date: 20150902 Pledgee: Shunde Guangdong rural commercial bank Nanhai Branch of Limited by Share Ltd Pledgor: Guangdong Yongquan Valve Technology Co., Ltd. Registration number: 2017440000121 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20181130 Granted publication date: 20150902 Pledgee: Shunde Guangdong rural commercial bank Nanhai Branch of Limited by Share Ltd Pledgor: Guangdong Yongquan Valve Technology Co., Ltd. Registration number: 2017440000121 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Pneumatic energy-saving piston-balanced water pump control valve Effective date of registration: 20181203 Granted publication date: 20150902 Pledgee: Shunde Guangdong rural commercial bank Nanhai Branch of Limited by Share Ltd Pledgor: Guangdong Yongquan Valve Technology Co., Ltd. Registration number: 2018990001132 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200109 Granted publication date: 20150902 Pledgee: Shunde Guangdong rural commercial bank Nanhai Branch of Limited by Share Ltd Pledgor: Guangdong Yongquan Valve Technology Co., Ltd. Registration number: 2018990001132 |