CN101962125B - Positive and negative pressure integrated storehouse pump - Google Patents
Positive and negative pressure integrated storehouse pump Download PDFInfo
- Publication number
- CN101962125B CN101962125B CN2010105317575A CN201010531757A CN101962125B CN 101962125 B CN101962125 B CN 101962125B CN 2010105317575 A CN2010105317575 A CN 2010105317575A CN 201010531757 A CN201010531757 A CN 201010531757A CN 101962125 B CN101962125 B CN 101962125B
- Authority
- CN
- China
- Prior art keywords
- air inlet
- valve
- venturi tube
- reversing arrangement
- pump housing
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a positive and negative pressure integrated storehouse pump, which comprises a pump body (2) and a discharge valve (4) and is characterized in that: the discharge valve (4) is positioned in a guide tank (9), one end of the guide tank (9) is provided with a discharge hole, and the other end of the guide tank (9) is communicated with one air outlet passage of a second reversing device (6); the other air outlet passage of the second reversing device (6) is communicated with the lower part of the pump body (2), and the air inlet end of the second reversing device (6) is communicated with the air outlet of a venturi tube (5); an air outlet nozzle of an air inlet spray pipe (10) is inserted into the venturi tube (5), and the air inlet end of the air inlet spray pipe (10) is communicated with the air outlet of an air inlet valve (7); the air inlet end of a first reversing device (1) is communicated with the air outlet of the air inlet valve (7), one air outlet end of the first reversing device (1) is communicated with an air inlet and exhaust port (12) on the upper part of the pump body (2), and the other air outlet end of the first reversing device (1) is communicated with the venturi tube (5) through a by-pass pipe (11); and the air inlet end of the air inlet valve (7) is connected with a compressed air source. The pump has the advantages of simple structure, low investment and convenient use.
Description
Technical field
The present invention relates to a kind of dust material load transfer device, the storehouse pump that is used to supply raw materials that uses during especially a kind of strength is carried.
Background technology
At present; In nonferrous metallurgy and chemical industry; Feed proportioning system all is that several kinds of raw materials are blended into together by the different proportioning of technological requirement; This wherein just has valuable raw material, must the valuable raw material of packed or barreled be delivered to the former feed bin of eminence (general height is at 45 ~ 80 meters), proportioning blending after metering.If it is adopt a dead lift then to waste time and energy, also uneconomical; As adopt mechanical transport, and the phenomenon of evaporating, emitting, dripping or leaking of liquid or gas then very easily appears, cause waste, also can form pollution; As adopt strength to carry and then can carry out the conveying of raw material in totally-enclosed condition, delivery duct is arranged simple, but and automatic operating.But simple malleation or negative pressure strength are carried the leakage that all can cause raw material, cause air-transport system normally not move.Therefore adopt the negative pressure suction to get into the storehouse pump, with malleation raw material is being delivered to the former feed bin of eminence, can avoid the airborne dust of when filling with substance, the malleation fed distance is far away, air consumption is low, and terminal dusting equipment just can dispose small dimension.
Summary of the invention
(malleation is roots blower or compressor to the objective of the invention is need to adopt different propulsions source to existing positive negative pressure system; The negative pressure propulsion source is a vacuum pump); Positive negative pressure two cover system equipment investments are big; Awkward problem designs the positive negative pressure integral type storehouse pump that a kind of need one cover air machinery can be accomplished malleation feeding and negative pressure charging.
Technical scheme of the present invention is:
A kind of positive negative pressure integral type storehouse pump comprises the pump housing 2, and the top of the pump housing 2 is provided with porting 12; The bottom of the pump housing 2 is equipped with bleeder valve 4; The middle and upper part of the pump housing 2 is equipped with inlet valve 3, and inlet valve 3 is connected with suction tube 8, it is characterized in that described bleeder valve 4 is arranged in water conservancy diversion jar 9; One end of water conservancy diversion jar 9 is provided with discharging opening; The other end of water conservancy diversion jar 9 communicates with an outlet passageway of second reversing arrangement 6, and another outlet passageway of second reversing arrangement 6 is connected with the bottom of the pump housing 2, and the inlet end of second change-over valve 6 is connected with the air extractor duct of Venturi tube 5; The outgassing nozzle of air inlet jet pipe 10 is inserted in the Venturi tube 5; The inlet end of air inlet jet pipe 10 is connected with the air extractor duct of air inlet valve 7, and the inlet end of first reversing arrangement 1 also is connected with the air extractor duct of air inlet valve 7, and an outlet side of first reversing arrangement 1 is connected with the porting 12 on the pump housing 2 tops; Another outlet side of first reversing arrangement 1 is connected with Venturi tube 5 through bypass duct 11, and the inlet end of air inlet valve 7 links to each other with compressed gas source.
The nozzle end that is arranged in the air inlet jet pipe 1 of Venturi tube 5 should be lower than the nadir of the through hole that is connected with bypass duct 11 on the Venturi tube 5.
The caliber of described air inlet jet pipe 10 is the upper coarse and lower fine structure that gas quickens of being convenient to, the diameter of the end that the diameter that air inlet jet pipe 10 inserts the end in the Venturi tube 5 should link to each other less than the outlet side with first change-over valve 1.
The bore of the air extractor duct that the bore of the air extractor duct that is connected with water conservancy diversion jar 9 of described second reversing arrangement 6 should be connected with storehouse pump 2 bottoms greater than water conservancy diversion jar 9.
The outgassing nozzle of described air inlet jet pipe 10 is the Bearing score nozzle.
Described first reversing arrangement 1 is made up of two on-off valves 101; One of them on-off valve 101 is installed on the pipeline between the porting 12 on the exit end that is communicated with air inlet valve 7 and the pump housing 2 tops, and another on-off valve 101 is installed on the pipeline between the porting 12 on connection Venturi tube 5 and the pump housing 2 tops.
Described first reversing arrangement 1 comprises valve body 102, piston 103 and retracing spring 104; Be respectively equipped with three through holes that are communicated with air inlet valve 7, porting 12 and bypass duct 11 on the valve body 102; Piston 103 is arranged in valve body 102; Its end links to each other with actuating device 105, and the other end and retracing spring 104 offset.When during actuating device 105 action piston 103 being pushed to be communicated with the air extractor duct of bypass duct 11; Air inlet valve is air feed in the pump housing 2; When actuating device 105 stops to move; Piston 103 will be communicated with the through hole of air inlet valve 7 under the effect of retracing spring 104 seals, and this moment, porting 12 was communicated with bypass duct 11, and the gas in the pump housing 2 gets under the attraction of nozzle place negative pressure in the Venturi tube 5 and in an air extractor duct entering water conservancy diversion jar 9 of second reversing arrangement 6, discharges.
Described actuating device 105 is cylinder, hydraulic actuating cylinder or electric device.
Described second reversing arrangement 6 is a three-way diverter valve.
Described second reversing arrangement 6 is made up of two on-off valves 601, and one of them on-off valve 601 is installed in when being communicated with civilian mound on the pipeline between the pipe 5 and water conservancy diversion jar 9, and another on-off valve 601 is installed on the pipeline that is communicated with Venturi tube 5 and the pump housing 2 bottoms.
Beneficial effect of the present invention:
The present invention utilizes a cover pneumatic transport equipment to solve storehouse pump suction material problem, has small investment, advantage simple in structure, easy to use.
Produce negative pressure principle thereby utilization of the present invention is calmed the anger around the body and make and produce negative pressure in the pump of storehouse material is sucked in the pump of storehouse, can realize the automatic guidance of feeding and discharging helping improving automatization level through the electrical control of routine.
Description of drawings
Fig. 1 is one of structural representation of the present invention.
Fig. 2 is two of a structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Embodiment one.
As shown in Figure 1.
A kind of positive negative pressure integral type storehouse pump; Comprise the pump housing 2, the top of the pump housing 2 is provided with porting 12, and the bottom of the pump housing 2 is equipped with bleeder valve 4; The middle and upper part of the pump housing 2 is equipped with inlet valve 3; Inlet valve 3 is connected with suction tube 8, it is characterized in that described bleeder valve 4 is arranged in water conservancy diversion jar 9, and water conservancy diversion jar 9 is provided with discharging opening with bleeder valve 4 relative ends; The other end of water conservancy diversion jar 9 communicates with first outlet passageway of second reversing arrangement 6 (can adopt electronic three-dimensional change-over valve); Second outlet passageway of second change-over valve 6 is connected with the bottom of the pump housing 2, and the inlet end of second change-over valve 6 is connected with the air extractor duct of Venturi tube 5, the bore of the air extractor duct that the bore of the air extractor duct that is connected with water conservancy diversion jar 9 of second change-over valve 6 is connected with storehouse pump 2 bottoms more preferably greater than water conservancy diversion jar 9.The outgassing nozzle of air inlet jet pipe 10 (can adopt plain nozzle; Also can adopt the Bearing score nozzle) be inserted in the Venturi tube 5; The inlet end of air inlet jet pipe 10 is connected with the air extractor duct of air inlet valve 7; The caliber of air inlet jet pipe 10 preferably is the upper coarse and lower fine structure that gas quickens of being convenient to, and the diameter that air inlet jet pipe 10 inserts the end in the Venturi tube 5 should be less than the diameter of an end that links to each other with air inlet valve 7 outlet sides.First reversing arrangement 1 is made up of two on-off valves 101 (can adopt electronic on-off valve); One of them on-off valve 101 is installed on the pipeline between the porting 12 on air inlet valve 7 and the pump housing 2 tops; Another on-off valve 101 is installed in the bypass duct 11 between the inlet end that is communicated with porting 12 and Venturi tube 5; The nadir in the hole that bypass duct 11 is connected with Venturi tube 5 should be no more than the position of the nozzle of air inlet jet pipe 1, and the nozzle end that is arranged in the air inlet jet pipe 1 of Venturi tube 5 should be lower than the nadir of the through hole that is connected with bypass duct 11 on the Venturi tube 5.
Embodiment two.
As shown in Figure 2.
A kind of positive negative pressure integral type storehouse pump; Comprise the pump housing 2, the top of the pump housing 2 is provided with porting 12, and the bottom of the pump housing 2 is equipped with bleeder valve 4; The middle and upper part of the pump housing 2 is equipped with inlet valve 3; Inlet valve 3 is connected with suction tube 8, it is characterized in that described bleeder valve 4 is arranged in water conservancy diversion jar 9, and water conservancy diversion jar 9 is provided with discharging opening with bleeder valve 4 relative ends; The other end of water conservancy diversion jar 9 communicates with Venturi tube 5 through electronic on-off valve 601 with second reversing arrangement 6 (can adopt two electronic on-off valves 601 to realize); Between the bottom of the Venturi tube 5 and the pump housing 2, also be provided with connecting pipe, electronic on-off valve 601 also is installed on this connecting pipe, the pipeline that the bore of the air extractor duct that Venturi tube 5 is connected with water conservancy diversion jar 9 pipe 5 when being communicated with civilian mound is connected with storehouse pump 2 bottoms.The outgassing nozzle of air inlet jet pipe 10 (can adopt plain nozzle; Also can adopt the Bearing score nozzle) be inserted in the Venturi tube 5; The inlet end of air inlet jet pipe 10 is connected with the air extractor duct of air inlet valve 7; The caliber of air inlet jet pipe 10 preferably is the upper coarse and lower fine structure that gas quickens of being convenient to, and the diameter that air inlet jet pipe 10 inserts the end in the Venturi tube 5 should be less than the diameter of an end that links to each other with air inlet valve 7 outlet sides.First reversing arrangement 1 comprises valve body 102, piston 103 and retracing spring 104; Be respectively equipped with three through holes that are communicated with air inlet valve 7, porting 12 and bypass duct 11 on the valve body 102; Piston 103 is arranged in valve body 102; Its end links to each other with actuating device 105, and the other end and retracing spring 104 offset.When in actuating device 105 (can be cylinder, hydraulic actuating cylinder or electric device) when action, pushed piston 103 to be communicated with the air extractor duct of bypass duct 11 to; Air inlet valve is air feed in the pump housing 2; When actuating device 105 stops to move; Piston 103 will be communicated with the through hole of air inlet valve 7 and seal under the effect of retracing spring 104; This moment, porting 12 was communicated with bypass duct 11, and the gas in the pump housing 2 gets under the attraction of nozzle place negative pressure in the Venturi tube 5 and in an air extractor duct entering water conservancy diversion jar 9 of second reversing arrangement 6, discharges.The nadir in the hole that bypass duct 11 and Venturi tube 5 are connected and are connected should be no more than the position of the nozzle of air inlet jet pipe 1, and the nozzle end that is arranged in the air inlet jet pipe 1 of Venturi tube 5 should be lower than the nadir of the through hole that is connected with bypass duct 11 on the Venturi tube 5.
Working process of the present invention is:
During suction, should close bleeder valve 4 earlier, the air extractor duct of air inlet valve 7 is connected with air inlet jet pipe 10, opens the passage between second reversing arrangement and the water conservancy diversion jar 9; Close the passage between the porting 12 of first reversing arrangement 1 and storehouse pump 2, storehouse pump 2 gets into the suction states, opens the air inlet valve 7 of admission port; The passage of the pressure gas of malleation through second change-over valve 6 gets in the water conservancy diversion jar 9 and from the discharging opening discharging, the pressure gas of malleation forms negative pressure in Venturi tube 5, through bypass duct 11 with gas sucking-offs in the storehouse pump 2; Produce certain negative pressure in the storehouse pump 2 and make, open inlet valve 3 this moment, and material is inhaled in the storehouse pump 2 through suction tube 8; Level-sensing device on the pump of storehouse (positive displacement, Weighing type) sends the full signal of material, closes inlet valve 3, switches first reversing arrangement 1; Another passage of second reversing arrangement 6 of interlock is opened with it, and storehouse pump 2 gets into feed status, opens bleeder valve 4; Barotropic gas gets into the storehouse pump 2 from porting, the material in the storehouse pump 2 is depressed in the pipeline carries, when the pressure transformer on the pipeline sends the low pressure limit signal; Switch first reversing arrangement 1, close bleeder valve 4, storehouse pump 2 gets into the next one and inhales-send circulation.
Also can the reversing arrangement among embodiment one and the embodiment two be carried out combination in any during practical implementation, this combination all belongs to equivalence replacement of the present invention.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (2)
1. positive negative pressure integral type storehouse pump; Comprise the pump housing (2); The top of the pump housing (2) is provided with porting (12), and the bottom of the pump housing (2) is equipped with bleeder valve (4), and the middle and upper part of the pump housing (2) is equipped with inlet valve (3); Inlet valve (3) is connected with suction tube (8); It is characterized in that described bleeder valve (4) is arranged in water conservancy diversion jar (9), an end of water conservancy diversion jar (9) is provided with discharging opening, and the other end of water conservancy diversion jar (9) communicates with an outlet passageway of second reversing arrangement (6); Another outlet passageway of second reversing arrangement (6) is connected with the bottom of the pump housing (2); The inlet end of second reversing arrangement (6) is connected with the air extractor duct of Venturi tube (5), and the outgassing nozzle of air inlet jet pipe (10) is inserted in the Venturi tube (5), and the inlet end of air inlet jet pipe (10) is connected with the air extractor duct of air inlet valve (7); The inlet end of first reversing arrangement (1) also is connected with the air extractor duct of air inlet valve (7); An outlet side of first reversing arrangement (1) is connected with the porting (12) on the pump housing (2) top, and another outlet side of first reversing arrangement (1) is connected with Venturi tube (5) through bypass duct (11), and the inlet end of air inlet valve (7) links to each other with compressed gas source; The nozzle end that is arranged in the air inlet jet pipe (10) of Venturi tube (5) is lower than the nadir of the through hole that is connected with bypass duct (11) on the Venturi tube (5); The caliber of described air inlet jet pipe (10) is the upper coarse and lower fine structure that gas quickens of being convenient to, the diameter of the end that the diameter that air inlet jet pipe (10) inserts the end in the Venturi tube (5) links to each other less than the outlet side with first reversing arrangement (1); Described first reversing arrangement (1) is made up of two on-off valves (101); One of them on-off valve (101) is installed on the pipeline between the porting (12) on the air extractor duct that is communicated with air inlet valve (7) and the pump housing (2) top, and another on-off valve (101) is installed on the bypass duct (11) between the inlet end of connection porting (12) and Venturi tube (5); Described second reversing arrangement (6) is made up of two on-off valves (601); One of them on-off valve (601) is installed on the pipeline that is communicated with between Venturi tube (5) and the water conservancy diversion jar (9), and another on-off valve (601) is installed on the pipeline that is communicated with Venturi tube (5) and the pump housing (2) bottom.
2. positive negative pressure integral type according to claim 1 storehouse pump, the outgassing nozzle that it is characterized in that described air inlet jet pipe (10) is a Laval nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105317575A CN101962125B (en) | 2010-11-04 | 2010-11-04 | Positive and negative pressure integrated storehouse pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105317575A CN101962125B (en) | 2010-11-04 | 2010-11-04 | Positive and negative pressure integrated storehouse pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101962125A CN101962125A (en) | 2011-02-02 |
| CN101962125B true CN101962125B (en) | 2012-07-04 |
Family
ID=43515224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105317575A Expired - Fee Related CN101962125B (en) | 2010-11-04 | 2010-11-04 | Positive and negative pressure integrated storehouse pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101962125B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583718B (en) * | 2012-03-09 | 2013-07-10 | 高晓华 | MBBR (Moving Bed Biofilm Reactor) packing material negative pressure and positive pressure conveying method and device |
| CN102923485A (en) * | 2012-11-27 | 2013-02-13 | 西安热工研究院有限公司 | Efficient positive-pressure pneumatic conveying system of pebble coal |
| CN103144967B (en) * | 2013-03-26 | 2015-08-19 | 无锡锡南铸造机械股份有限公司 | Two tank dense-phase pneumatic conveying device |
| CN104692123A (en) * | 2015-01-30 | 2015-06-10 | 成都易态科技有限公司 | Ash material conveying device for filtering system |
| US10245406B2 (en) * | 2015-03-24 | 2019-04-02 | Ventec Life Systems, Inc. | Ventilator with integrated oxygen production |
| CN106219245A (en) * | 2016-08-26 | 2016-12-14 | 广州番中电气设备有限公司 | Integral type granular material feed conveying system |
| CN106927259A (en) * | 2017-04-28 | 2017-07-07 | 湖南三德科技股份有限公司 | A kind of power cabinet for sample pneumatic conveyer system |
| CN107410134B (en) * | 2017-09-20 | 2022-08-23 | 山东省淡水渔业研究院（山东省淡水渔业监测中心） | Pneumatic remote aquaculture feed scattering device and using method thereof |
| CN107857120B (en) * | 2017-11-16 | 2024-04-02 | 江雄 | Material conveying device |
| CN108100675A (en) * | 2017-12-15 | 2018-06-01 | 神华集团有限责任公司 | Ice chest pearlife takes off sand device and method |
| CN109733888A (en) * | 2018-12-31 | 2019-05-10 | 广州科里时机械工程有限公司 | A kind of assembled moving storehouse pump installation |
| CN115077671B (en) * | 2022-04-29 | 2023-12-29 | 安徽力科矿山机械有限公司 | Mining weighing type storage bin pump and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861830A (en) * | 1973-09-17 | 1975-01-21 | Ronald D Johnson | Pressure differential pumping system for dry bulk products |
| US4545410A (en) * | 1984-01-30 | 1985-10-08 | Cyclonaire Corporation | System for transferring dry flowable material |
| CN201849956U (en) * | 2010-11-04 | 2011-06-01 | 南京顺风气力输送系统有限公司 | Positive-negative pressure integrated type bin pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042130B2 (en) * | 1979-06-05 | 1985-09-20 | 黒崎窯業株式会社 | Spray gun with dust suction function |
| US5071289A (en) * | 1989-12-27 | 1991-12-10 | Alpheus Cleaning Technologies Corp. | Particulate delivery system |
-
2010
- 2010-11-04 CN CN2010105317575A patent/CN101962125B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861830A (en) * | 1973-09-17 | 1975-01-21 | Ronald D Johnson | Pressure differential pumping system for dry bulk products |
| US4545410A (en) * | 1984-01-30 | 1985-10-08 | Cyclonaire Corporation | System for transferring dry flowable material |
| CN201849956U (en) * | 2010-11-04 | 2011-06-01 | 南京顺风气力输送系统有限公司 | Positive-negative pressure integrated type bin pump |
Non-Patent Citations (1)
| Title |
|---|
| JP昭55-161728A 1980.12.16 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101962125A (en) | 2011-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101962125B (en) | Positive and negative pressure integrated storehouse pump | |
| CN201132143Y (en) | Pressurizing coating spraying machine | |
| CN201520548U (en) | Pneumatic pressure delivering device capable of automatic weighing | |
| CN203222265U (en) | Intelligent air cannon | |
| CN201849956U (en) | Positive-negative pressure integrated type bin pump | |
| CN203006483U (en) | Single efficient continuous delivery pump | |
| CN203212012U (en) | Novel continuous dense-phase pneumatic conveying device | |
| CN209367345U (en) | A kind of nitrogen sealing and circulating dense-phase transporting system | |
| CN204433807U (en) | A kind of economizer ash discharge transport path switches and control system | |
| CN102267633A (en) | Positive/negative pressure combined conveying jar | |
| CN102935945B (en) | A kind of separate unit high-efficiency and continuous transmission pump | |
| CN202414692U (en) | Device for remotely conveying powdered active carbon | |
| CN202449839U (en) | Nitrogen static-pressure vacuum refueling machine | |
| CN103464325B (en) | A kind of gas control flush coater | |
| CN208912370U (en) | A kind of atomizing oiling device | |
| CN203458956U (en) | Pneumatic spray device | |
| CN202089589U (en) | Powder material conveying device | |
| CN209337668U (en) | Feed bin pump and pneumatic transport equipment | |
| CN202016744U (en) | Positive and negative pressure combined type conveying tank | |
| CN202988280U (en) | Leakage-proof gate valve | |
| CN103195970B (en) | Automatically-controlled valve air reservoir | |
| CN217190267U (en) | Pneumatic feeding device of polyurethane spraying machine | |
| CN104555441A (en) | Double-bunker pneumatic conveying system for limestone powder | |
| CN107202246A (en) | A kind of external-compression type HTHP material dosing conveying device | |
| CN200974767Y (en) | Transferring apparatus for liquid material under negative-pressure condition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING COMPRESSOR CO., LTD. Effective date: 20120906 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120906 Address after: Jiangning District of Nanjing City, Jiangsu province 211178 Binjiang Development Zone, Jin Road No. 21 Patentee after: Nanjing Shunfeng Pneumatic Transfer System Co., Ltd. Patentee after: NANJING COMPRESSOR CO., LTD. Address before: Jiangning District of Nanjing City, Jiangsu province 211178 Binjiang Development Zone, Jin Road No. 21 Patentee before: Nanjing Shunfeng Pneumatic Transfer System Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20161104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |