CN102135186B - Anti-theft intelligent air release valve - Google Patents
Anti-theft intelligent air release valve Download PDFInfo
- Publication number
- CN102135186B CN102135186B CN 201010122234 CN201010122234A CN102135186B CN 102135186 B CN102135186 B CN 102135186B CN 201010122234 CN201010122234 CN 201010122234 CN 201010122234 A CN201010122234 A CN 201010122234A CN 102135186 B CN102135186 B CN 102135186B
- Authority
- CN
- China
- Prior art keywords
- air inlet
- exhaust valve
- water
- large amount
- shell
- 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
Images
Landscapes
- Details Of Valves (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides an air intake and release valve which prevents burglary and can effectively eliminate water hammer produced when air is discharged by a water supply pipeline. The air intake and release valve comprises a mass air intake and release valve, a water hammer prevention device and a trace air intake and release valve. The trace air intake and release valve is connected with a shell of the mass air intake and release valve; the water hammer prevention device is connected with the shell of the mass air intake and release valve; and the water hammer prevention device and the trace air intake and release valve are arranged in a protective cover of the circumstance of the shell of the mass air intake and release valve. The air intake and release valve has the advantages that: the air intake and release valve with the structure can limit the air release speed when the pipeline is filled with water and releases air quickly, so that an air bag is formed in the pipeline to buffer the compact of water on the pipeline; and external parts of a valve body are effectively prevented from being stolen because the external parts are embedded in the valve body and an attachment bolt is plugged; and an air layer is reserved above a main floating ball to prevent a sealing surface from being contacted with water, eliminate the phenomenon that water is leaked due to impurity blockage, and can effectively guarantee that the sealing surface is prevented from being frozen at an extremely low temperature, the main floating ball can leave the sealing surface and vacuum is not produced in the pipeline.
Description
Technical field
The present invention relates to a kind of valve mechanism, particularly a kind of anti-theft intelligent air release valve.
Background technique
Present air inlet and exhaust valve mostly adopts the main valve side to install the structure of micro-air inlet and exhaust valve additional on the one hand, and micro-air inlet and exhaust valve is external, and main ball float is without guiding device, and high velocity air acts directly on main ball float bottom, and main ball float top is without air partition.This kind structure easily causes micro-air inlet and exhaust valve to be stolen, and makes air inlet and exhaust valve lose trace and continues intake and exhaust functions; Main ball float easily with valve interior wall collision, damage ball float outer surface; Main ball float bears the direct effect of high velocity air, is easy to be blown afloat and closes relief opening, and air inlet and exhaust valve loses a large amount of degassing functions; Because main ball float top is without air partition, impurity easily accumulates in the main vent seal ring in the water, causes relief opening to leak, and causes seal ring and main ball float bonding owing to freezing in the time of cold, master's ball float can not in time break away from seal ring when pipeline needs tonifying Qi, causes pipeline vacuum.On the other hand, air inlet and exhaust valve can not work without water hammer-resistant device or water hammer-resistant device at present, and the water column that occurs in pipeline rapid water filling or pipeline after water column separates makes the stage up, and the easy high speed impact pipeline of current causes the damage to pipeline and equipment.The exhaust of pipeline and tonifying Qi constant voltage are to water application efficiency and pipeline relevant very important relation in working life, the significance of this type product is also known by each water undertaking, but because a lot of weakness of this series products and can't assure feed water and Pipeline Water safety make whole water supply industry bring great potential safety hazard.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the present invention is by providing a kind of air inlet and exhaust valve of the antitheft and water hammer that produces when effectively eliminating the exhaust of pipeline rapid water filling, can reach real raising water application efficiency, eliminates water hammer that rapid water filling produces, antitheft, safe, a large amount of purpose of intake and exhaust.
A kind of antitheft and effectively eliminate the air inlet and exhaust valve of water hammer, described air inlet and exhaust valve includes a large amount of air inlet and exhaust valve, micro-air inlet and exhaust valve, water hammer-resistant device, it is characterized in that: described micro-air inlet and exhaust valve is linked to each other with the shell of described a large amount of air inlet and exhaust valve by outer silk; Utilize positioning pipe to link to each other with the shell of described a large amount of air inlet and exhaust valve with hexagon socket head cap screw in described water hammer-resistant device.During pipeline water-filling low pressure exhaust, large quantity of air is discharged by the shell middle part main vent of described a large amount of air inlet and exhaust valve; After pipeline was full of water, the shell of described a large amount of air inlet and exhaust valve middle part main vent was closed, and the minimum gas of separating out from water is discharged from described micro-air inlet and exhaust valve trace relief opening.When negative pressure appearred in water supply line, described main vent and micro-relief opening were opened to pipeline rapidly and are filled into air, kept the inside and outside constant voltage of pipeline.
Described a large amount of air inlet and exhaust valve includes main ball float, valve body, shell, protective housing, loam cake.Main ball float is arranged on the centre of valve body middle part separation layer, and main ball float bottom is held by cushion pad, and main ball float guide rod passes the cushion pad middle part, can move up and down under buoyancy of water; Described valve body intermediate isolating layer is a pot shape, and its upper side has four breach, the bottom cushion pad of packing into; The shell periphery has the round platform of projection, counter sink is processed at the round platform middle part, hexagon socket head cap screw is packed into, and counter sink is interior to be connected with the valve body upper flange, interstage sleeve, seal ring are inlayed in the shell middle part, shell and described micro-air inlet and exhaust valve connecting port bottom are fixed with vent rod, and vent rod inserts described valve body certain depth, is processed with counter sink on shell and the valve body conjunction plane, hexagon socket head cap screw is installed is connected the fixing described water hammer-resistant device of loam cake and protective housing, protective housing top has several hole exhausts; Loam cake is the hollow cylinder of end sealing, and its sealing surface inboard is provided with four small columns, and described small column middle part is processed with tapped blind hole.
Described water hammer-resistant device includes vibration damper plate, damping spring, dunnage, supporting sleeve.Supporting sleeve is shaped as the uncovered the other end of an end and opens the approximately 3/4 cylindrical of osculum, open osculum one end and be fixed on the upper surface of outer cover middle part, up uncovered, bottom osculum periphery has four gussets that are higher than inner bottom surface, and vibration damper plate is placed in described gusset top, and vibration damper plate is the band boss-shaped steel plate that outer surface is enclosed with rubber, the middle part has aperture, be placed on down without boss face on the gusset of supporting sleeve, be fixed with damping spring on the vibration damper plate boss face, the damping spring upper end is embedded in the dunnage central slot; Dunnage is to link to each other with an annular plate by four muscle with the hollow cylinder of inside groove, and it is surperficial that described hollow cylinder protrudes described annular plate, and described annular plate is close on supporting sleeve uncovered.
Effect of the present invention is that the anti-theft intelligent air release valve of this structure is a kind of air inlet and exhaust valve with a large amount of exhausts and continuous micro degassing function; the main valve body internal barrier protects main ball float not to be subjected to the direct impact of air-flow; avoid main ball float to close main vent too early and lose a large amount of degassing functions; main ball float top arranges air barrier and avoids in the water impurity to enter sealing surface causing main vent to leak; the water hammer-resistant device can limit exhaust velocity; avoid occurring because of the pipeline air exhaust water excessive velocities; line pressure rises rapidly and causes water hammer and bump; there are not external parts; product is antitheft; safety really improves water application efficiency and protection pipe safety.
Description of drawings
Fig. 1 is the sectional view of anti-theft intelligent air release valve of the present invention.
Sectional drawing when Fig. 2 is anti-theft intelligent air release valve low pressure normal exhaust of the present invention.
Sectional drawing when Fig. 3 is anti-theft intelligent air release valve water hammer-resistant exhaust of the present invention.
Fig. 4 is the sectional drawing of anti-theft intelligent air release valve of the present invention when stopping exhaust.
Among the figure:
1, main ball float 2, valve body 3, cushion pad 4, vent rod 5, shell 6, protective housing 7, micro-air inlet and exhaust valve 8, loam cake 9, vibration damper plate 10, damping spring 11, dunnage 12, supporting sleeve 13, positioning pipe 14, interstage sleeve 15, seal ring
Embodiment
Reaching by reference to the accompanying drawings embodiment to the present invention--the anti-theft intelligent air release valve structure is illustrated.
Anti-theft intelligent air release valve is the structure that the technical field important breakthrough is arranged.
As shown in Figure 1; anti-theft intelligent air release valve adopts the protection assembling; in the equal built-in protecting covers of all knockdown pieces (6); the bolt that is connected with valve body (2) adopts hexagon socket head cap screw to sink in shell (5) the periphery boss; shutoff is adopted on bolt top, can't not remove by special tool.
As shown in Figure 2, arrow represents air-flow direction among Fig. 2.During the initial stage, manifold pressure is lower at first water-filling for pipeline, and a large amount of air inlet and exhaust valve and micro-air inlet and exhaust valve be air in the extraneous discharge conduit simultaneously.In the pipeline most air along valve body (2) internal barrier outer ring passage through shell (5) middle part main vent discharged to protective housing (6) top, again through protective housing (6) outer wall upper air-vent discharged to the external world, the fraction air along described annular pass through vent rod (4), micro-air inlet and exhaust valve (7) discharged to the external world, air stream does not directly act on main ball float (1) bottom, avoid main ball float (1) to be blown afloat by air and close too early main vent on the shell (5), guarantee that a large amount of degassing functions normally realize.
As shown in Figure 3, arrow represents air-flow direction among Fig. 3.When pipeline pressure rises to setting pressure, vibration damper plate (9) up and down difference force overcomes damping spring (10) resistance, vibration damper plate (9) moves upward near dunnage (11), dwindle the space length of dunnage (11) and vibration damper plate (9), reduce the leaving area of vibration damper plate (9) top, thereby the exhaust velocity of restriction conduit, make within a certain period of time and retain air in the pipeline, form air bag, utilize compressibility and the elasticity of air to come buffered water to the impact of pipeline, avoid the rapid rising of line pressure and cause pipeline to produce water hammer and bump.When vibration damper plate (9) inside and outside differential pressure power surpassed damping spring (10) CLV ceiling limit value, vibration damper plate (9) touched dunnage, and described vibration damper plate seals on the described dunnage 4/5 air vent, and described a large amount of air inlet and exhaust valve begin small exhaust.
As shown in Figure 4, arrow represents air-flow direction among Fig. 4.After pipeline was full of water, main ball float (1) was closed described a large amount of air inlet and exhaust valve main vent under the water floating function, and described intelligent exhaust valve stops exhaust.Certain air partition layer is retained in main ball float this moment (1) top.
Claims (7)
1. the air inlet and exhaust valve of an effective water hammer antitheft and that a large amount of exhausts produce when eliminating the pipeline water-filling, this air inlet and exhaust valve includes a large amount of air inlet and exhaust valve, water hammer-resistant device and micro-air inlet and exhaust valve, it is characterized in that: described micro-air inlet and exhaust valve (7) is directly linked to each other with the shell (5) of a large amount of air inlet and exhaust valve by outer tooth, described water hammer-resistant device is passed through positioning pipe (13), hexagon socket head cap screw links to each other with the shell (5) of a large amount of air inlet and exhaust valve, described a large amount of air inlet and exhaust valve includes main ball float, valve body, shell, protective housing, loam cake, main ball float (1) is arranged on the centre of valve body (2) middle part separation layer, main ball float (1) bottom is held by cushion pad (3), main ball float (1) guide rod passes cushion pad (3) middle part, can move up and down under buoyancy of water; Described valve body
(2) the middle part separation layer be a pot shape, and its upper side has four breach, the bottom cushion pad (3) of packing into; Shell (5) periphery has the round platform of projection, counter sink is processed at the round platform middle part, hexagon socket head cap screw is packed into, and counter sink is interior to be connected with valve body (2) upper flange, interstage sleeve (14) is inlayed at shell (5) middle part, seal ring (15), shell (5) is fixed with vent rod (4) with described micro-air inlet and exhaust valve (7) connecting port bottom, vent rod (4) inserts described valve body (2) certain depth, be processed with counter sink on shell (5) and valve body (2) conjunction plane, hexagon socket head cap screw is installed is connected the fixing described water hammer-resistant device of loam cake (8) and protective housing (6), protective housing (6) top has several hole exhausts; Loam cake (8) is the hollow cylinder of end sealing, and its sealing surface inboard is provided with four small columns, and described small column middle part is processed with tapped blind hole, and described water hammer-resistant device includes vibration damper plate, damping spring, dunnage, supporting sleeve; Supporting sleeve (12) is shaped as the uncovered the other end of an end and opens the approximately 3/4 cylindrical of osculum, open osculum one end and be fixed on shell (5) upper surface middle part, up uncovered, bottom osculum periphery has four gussets that are higher than inner bottom surface, vibration damper plate (9) is placed in described gusset top, vibration damper plate (9) is enclosed with the band boss-shaped steel plate of rubber for outer surface, the middle part has aperture, be placed on down without boss face on the gusset of supporting sleeve (12), be fixed with damping spring (10) on vibration damper plate (9) boss face, damping spring (10) upper end is embedded in dunnage (11) central slot; Dunnage (11) is to link to each other with an annular plate by four muscle with the hollow cylinder of groove, and it is surperficial that described hollow cylinder protrudes described annular plate, and described annular plate is close on supporting sleeve (12) uncovered.
2. the air inlet and exhaust valve of water hammer effectively antitheft and that a large amount of exhausts produce when eliminating the pipeline water-filling according to claim 1, it is characterized in that: there is separation layer at the valve body of described a large amount of air inlet and exhaust valve (2) middle part, cushion pad (3) is equipped with in described separation layer bottom, guide rod on the main ball float (1) passes cushion pad (3) intermediate hole, main ball float (1) straight line motion under the water floating function is affixed to the seal ring (13) at shell (5) middle part and closes relief opening, and anti-sealing overflows described a large amount of air inlet and exhaust valve.
3. the air inlet and exhaust valve of water hammer effectively antitheft and that a large amount of exhausts produce when eliminating the pipeline water-filling according to claim 1, it is characterized in that: described valve body (2) is two spacer structure, high velocity air does not act directly on main ball float (1) during exhaust, reduce described main ball float blown afloat by air-flow too early and close relief opening may.
4. the air inlet and exhaust valve of water hammer effectively antitheft and that a large amount of exhausts produce when eliminating the pipeline water-filling according to claim 1, it is characterized in that: on shell (5) and valve body (2) fitting surface vent rod (4) is housed, when rising to described vent rod lower openings, water stop main ball float (1) top fraction air to continue to be discharged by described micro-air inlet and exhaust valve, make main ball float (1) top retain the part air partition, impurity enters sealing surface and loses seal action in the anti-sealing, guarantee simultaneously when temperature is lower than zero degree, not produce icing, prevent that master's ball float (1) can not break away from seal ring (13) and lose gas compensation function when tonifying Qi.
5. the air inlet and exhaust valve of water hammer effectively antitheft and that a large amount of exhausts produce when eliminating the pipeline water-filling according to claim 1, it is characterized in that: described water hammer-resistant device and micro-air inlet and exhaust valve (7) are installed in protective housing
(6) inside, protective housing (6) lower end links to each other with shell (5), and the upper end is by loam cake (8) and built-in shell
(5) fastening the sealing of hexagon socket head cap screw in the counterbore of bottom surface, shell (5) gos deep in the round platform of described shell projection with the attachment bolt of valve body (2), described round platform top seals with shutoff, described air inlet and exhaust valve from the outside without detachable block.
6. the air inlet and exhaust valve of water hammer effectively antitheft and that a large amount of exhausts produce when eliminating the pipeline water-filling according to claim 1, it is characterized in that: described a large amount of air inlet and exhaust valve shells (5) top is provided with the water hammer-resistant device, at the pipeline rapid water filling and during a large amount of exhaust, the certain pressure reduction of the inside and outside formation of described a large amount of air inlet and exhaust valve, when pressure reduction reaches setting value, vibration damper plate (9) is pressed close to dunnage (11) direction under differential pressure action, under the drag effect of damping spring (10), vibration damper plate (9) is pressed close to dunnage gradually with the increase of pressure reduction, dwindle the distance between described vibration damper plate and dunnage (11), reduce annulus area, limit the air displacement of described a large amount of air inlet and exhaust valve, form air bag in the inherent pipeline of certain hour, buffered water is to the impact of pipeline.
7. the air inlet and exhaust valve of water hammer effectively antitheft and that a large amount of exhausts produce when eliminating the pipeline water-filling according to claim 1, it is characterized in that: protective housing (6) is hollow cylinder, and its top periphery has several holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010122234 CN102135186B (en) | 2010-01-21 | 2010-01-21 | Anti-theft intelligent air release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010122234 CN102135186B (en) | 2010-01-21 | 2010-01-21 | Anti-theft intelligent air release valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102135186A CN102135186A (en) | 2011-07-27 |
| CN102135186B true CN102135186B (en) | 2013-01-02 |
Family
ID=44295058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010122234 Active CN102135186B (en) | 2010-01-21 | 2010-01-21 | Anti-theft intelligent air release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102135186B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185169B (en) * | 2011-12-28 | 2015-05-20 | 上海冠龙阀门机械有限公司 | Anti-freezing vent valve device |
| CN103104727A (en) * | 2012-12-11 | 2013-05-15 | 天津市国威给排水设备制造有限公司 | Exhaust value structure capable of exhausting not supplying air |
| CN103542138B (en) * | 2013-11-01 | 2016-09-21 | 深圳市华力大机电技术有限公司 | A kind of gasbag-type ventilation sluicing type positive/negative-pressure Water Hammer Control valve valve group |
| CN104880140A (en) * | 2015-05-29 | 2015-09-02 | 浙江坤博机械制造有限公司 | Air pressure control valve floating ball pressure-limiting height gap detection tool |
| CN104913111B (en) * | 2015-06-05 | 2017-09-29 | 株洲南方阀门股份有限公司 | Water hammer-resistant method for exhausting during water hammer-resistant air valve and pipeline use |
| CN105156742B (en) * | 2015-09-17 | 2018-07-20 | 天津市国威给排水设备制造有限公司 | A kind of air bleeding valve |
| CN105156756B (en) * | 2015-10-10 | 2017-10-20 | 中国水利水电科学研究院 | A kind of annular float formula water hammer-resistant Power Hi-speed |
| CN105673909B (en) * | 2016-04-12 | 2018-02-06 | 哈尔滨工业大学 | A kind of air bleeding valve Active Control Method and system based on high-frequency pressure signal |
| CN108317294A (en) * | 2018-04-04 | 2018-07-24 | 潍坊裕川机械有限公司 | Impact-resistant air bleeding valve |
| CN110701369A (en) * | 2019-09-03 | 2020-01-17 | 中阀科技(长沙)阀门有限公司 | Air valve |
| CN113309891A (en) * | 2021-05-27 | 2021-08-27 | 中国原子能科学研究院 | Exhaust valve for pulse extraction column and pulse extraction device |
| CN115264148B (en) * | 2022-07-27 | 2023-03-24 | 济南迈克阀门科技有限公司 | Water supply pipeline exhaust valve |
| CN118030859B (en) * | 2024-04-11 | 2024-06-18 | 天津市塘沽第一阀门有限公司 | Combined type air inlet and outlet valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176678A (en) * | 1976-12-06 | 1979-12-04 | Regie Nationale Des Usines Renault | Safety device for venting a fuel tank |
| CN2122277U (en) * | 1992-04-20 | 1992-11-18 | 赵庆斌 | Linear sealed type automatic air outlet valve |
| CN2174611Y (en) * | 1993-10-05 | 1994-08-17 | 王晓廷 | Automatic cut-off pressure-reducing valve and air-outlet valve for high-level closed water tank |
| CN2878841Y (en) * | 2006-04-10 | 2007-03-14 | 刘永 | Safety valve for pipe network |
| CN201836400U (en) * | 2010-01-21 | 2011-05-18 | 刘永 | Anti-theft type intelligent exhaust valve |
-
2010
- 2010-01-21 CN CN 201010122234 patent/CN102135186B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176678A (en) * | 1976-12-06 | 1979-12-04 | Regie Nationale Des Usines Renault | Safety device for venting a fuel tank |
| CN2122277U (en) * | 1992-04-20 | 1992-11-18 | 赵庆斌 | Linear sealed type automatic air outlet valve |
| CN2174611Y (en) * | 1993-10-05 | 1994-08-17 | 王晓廷 | Automatic cut-off pressure-reducing valve and air-outlet valve for high-level closed water tank |
| CN2878841Y (en) * | 2006-04-10 | 2007-03-14 | 刘永 | Safety valve for pipe network |
| CN201836400U (en) * | 2010-01-21 | 2011-05-18 | 刘永 | Anti-theft type intelligent exhaust valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102135186A (en) | 2011-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102135186B (en) | Anti-theft intelligent air release valve | |
| CN201836400U (en) | Anti-theft type intelligent exhaust valve | |
| CN201507656U (en) | Frost crack prevention and burglary prevention type combined exhaust valve | |
| CN202402737U (en) | Oil pressure soft bypass valve | |
| CN110296249B (en) | Composite air valve | |
| CN203146453U (en) | Warning type piston accumulator | |
| CN204877369U (en) | Liquid accuse is from deblocking formula fracturing packer | |
| CN106015439A (en) | Large-load and low-rigidity speed type limiting device | |
| CN204878500U (en) | Hydraulic absorber of multistage damping throttle | |
| CN202691432U (en) | Piston-type water-hammer arrestor | |
| CN103343826B (en) | Non-return valve | |
| CN109137840A (en) | A kind of bulkhgead gate device | |
| CN202561178U (en) | Exhaust valve | |
| CN111306393B (en) | Pipeline auxiliary device for reducing water hammer | |
| CN109506001B (en) | Novel anti-scouring balance valve | |
| CN205841179U (en) | Bypass valve and discharge opeing plunger | |
| CN203374901U (en) | Novel check valve | |
| CN203321831U (en) | Built-in oil-gas separator | |
| CN202691192U (en) | Combined type exhaust valve | |
| CN103967095A (en) | Explosion-proof method for pressure type toilet water tank and explosion-proof pressure type toilet water tank | |
| CN202065517U (en) | Gas seismic stop valve | |
| CN108278372A (en) | A kind of high speed opening valve and open method | |
| CN203783879U (en) | Pressure release valve of hydraulic pump | |
| CN103604327B (en) | Hole sealing device for deep hole blasting in rock-soil body | |
| CN207328424U (en) | Triple 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 | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: LIU QING GONG GAOSHI Effective date: 20120928 Owner name: TIANJIN GUOWEI WATER SUPPLY AND DRAINAGE EQUIPMENT Free format text: FORMER OWNER: LIU YONG Effective date: 20120928 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120928 Address after: 300300 Tianjin District of Dongli City Yuejin Road No. 13 Applicant after: Tianjin Guowei Feeding & Drainage Equipment Ment Manufacturing Co., Ltd. Address before: 300300, Dongli District, Tai'an, Tianjin, 7, 2, 102 Applicant before: Liu Yong Applicant before: Liu Qing Applicant before: Gong Gaoshi |
|
| 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: Anti-theft intelligent air release valve Effective date of registration: 20131122 Granted publication date: 20130102 Pledgee: Tianjin Dongfang Haixin SME Company limited by guarantee Pledgor: Tianjin Guowei Feeding & Drainage Equipment Ment Manufacturing Co., Ltd. Registration number: 2013120000050 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140305 Granted publication date: 20130102 Pledgee: Tianjin Dongfang Haixin SME Company limited by guarantee Pledgor: Tianjin Guowei Feeding & Drainage Equipment Ment Manufacturing Co., Ltd. Registration number: 2013120000050 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model |