CN203948264U - A kind of membrane pump with pneumatic drive - Google Patents
A kind of membrane pump with pneumatic drive Download PDFInfo
- Publication number
- CN203948264U CN203948264U CN201420133031.XU CN201420133031U CN203948264U CN 203948264 U CN203948264 U CN 203948264U CN 201420133031 U CN201420133031 U CN 201420133031U CN 203948264 U CN203948264 U CN 203948264U
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- chamber
- entered passageway
- control
- gas
- piston
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- 239000012528 membrane Substances 0.000 title claims abstract description 21
- 210000000981 epithelium Anatomy 0.000 claims description 16
- 239000010985 leather Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229920006351 engineering plastic Polymers 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Abstract
A kind of membrane pump with pneumatic drive of the utility model, comprise one first chamber and the second chamber, between described the first chamber and described the second chamber, connect an air valve body, also comprise a control unit, described control unit can control described the first chamber or the second chamber is communicated with an external air source.The utility model is keeping under the condition that bleed pressure is constant, control system is external, easy to maintenance, and adopt engineering plastics to reduce the dependence to non-ferrous metal the working life that material selects engineering plastics greatly to improve pump, plays energy-saving effect simultaneously.
Description
Technical field
The utility model relates to a kind of pump, more specifically says a kind of membrane pump with pneumatic drive.
Background technique
Membrane pump with pneumatic drive is a kind of Novel conveyer tool, is a kind of pump class of current latest domestic grain husk.Membrane pump with pneumatic drive, is a kind of Novel conveyer tool, and employing pressurized air is power source, and for various corrosive liquids, with the liquid of particle, high viscosity, volatile, inflammable, hypertoxic liquid, all can be taken out light and exhaust.
Also can there is some problems and shortcoming for our existing membrane pump with pneumatic drive: 1, exhaust pathway is long and narrow, inefficiency.2, former air valve body adopts aluminum alloy material to make; containing under the bad working environments such as acid, alkali; perishable; and reduced operating life and easily accidents caused 3, reversing shaft, piston adopt the mode of dividing right and left; when assembling, coaxality is poor easily causes phenomenon stuck when equipment is worked, that shut down, and initiating system fault.5, suction port, for increasing filtrating equipment, need to increase air filter.6, do not establish potted line, sealing is poor.
Model utility content
Due to the problems referred to above of prior art, the utility model proposes a kind of membrane pump with pneumatic drive, it can solve the problems referred to above of prior art.
The utility model is by the following technical solutions:
A kind of membrane pump with pneumatic drive, comprises one first chamber and the second chamber, between described the first chamber and described the second chamber, connects an air valve body, also comprises a control unit, and described control unit can control described the first chamber or the second chamber is communicated with an external air source.
Also comprise a leather diaphragm and one second epithelium, the surrounding of described leather diaphragm and described the second epithelium is fixed on described air valve body and forms described the first chamber and described the second chamber, and the two ends of a coupling shaft are connected and fixed on respectively on described leather diaphragm and described the second epithelium.
Described air valve body inside is provided with one first chamber gas-entered passageway and one second chamber gas-entered passageway, and described the first chamber gas-entered passageway is communicated with described the first chamber, and described the second chamber gas-entered passageway is communicated with described the second chamber.
Described control unit comprises a slide block, can be by the sealing of described the first chamber gas-entered passageway or described the second chamber gas-entered passageway by the motion of described slide block.
Described control unit also comprises a control cavity, and described slide block is located at described control cavity inside, and can slide with respect to described control cavity, and described control cavity is provided with an external air source suction port.
Also comprise a control piston, it comprises a first piston and one second piston, and described first piston and described the second piston are in aggregates by a connecting rod, and described first piston or described the second piston can drive described slide block to slide.
Also comprise a slide valve, described slide valve is fixed on and on described air valve body, forms described control cavity.
Described first piston and described the second piston are cut apart described control cavity to form one first control cavity, one second control cavity and the 3rd control cavity, described slide block is located at the described the 3rd and is controlled cavity inside, and the suction port of the suction port of described the first chamber gas-entered passageway and described the second chamber gas-entered passageway is located at described the 3rd control cavity inside.
Also comprise one first control valve gas-entered passageway and one second control valve gas-entered passageway, the two ends of described the first control valve gas-entered passageway control cavity with described first respectively and described the 3rd control cavity is communicated with, and the two ends of described the second control valve gas-entered passageway control cavity with described second respectively and described the 3rd control cavity is communicated with.
Also comprise a reversing shaft, described the first chamber and described the second chamber interior are located at respectively in the two ends of described reversing shaft, and the two ends of described reversing shaft can move left and right under the collision of described leather diaphragm and described the second epithelium.
The utlity model has following advantage:
The utility model is keeping under the condition that bleed pressure is constant, control system is external, easy to maintenance, and adopt engineering plastics to reduce the dependence to non-ferrous metal the working life that material selects engineering plastics greatly to improve pump, plays energy-saving effect simultaneously.
Brief description of the drawings:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the air valve body of Fig. 1.
Fig. 3 is the structural representation of the air valve body of Fig. 1.
Fig. 4 is the cross-sectional view of Fig. 1.
Fig. 5 is the partial structurtes schematic diagram of Fig. 4.
Fig. 6 is use status architecture schematic diagram of the present utility model.
Embodiment:
Below in conjunction with embodiment, describe the utility model in detail.Should be understood that these mode of executions are only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
As Fig. 1 arrives to as shown in Fig. 6, the utility model discloses a kind of membrane pump with pneumatic drive, and it comprises the first chamber 1, the second chamber 2, air valve body 3.Between described the first chamber and described the second chamber, connect an air valve body, also comprise a control unit, described control unit can control described the first chamber or the second chamber is communicated with an external air source 9, and control unit can be controlled external air source to the first chamber or the inflation of the second chamber.
The utility model also comprises a leather diaphragm 101 and one second epithelium 201, the surrounding of described leather diaphragm 101 and described the second epithelium 201 is fixed on and on described air valve body, forms described the first chamber 1 and described the second chamber 2, the two ends of one coupling shaft 3 are connected and fixed on respectively on described leather diaphragm 101 and described the second epithelium 201, and leather diaphragm and the second epithelium can form a double-action mechanism.
Control unit in the utility model comprises slide block 7, slide valve 8, control piston 9, controls cavity 10 and reversing shaft 4.Slide valve 8 is fixed on and on described air valve body, forms described control cavity.Described slide block is located at described control cavity inside, and can slide with respect to described control cavity, can be by the sealing of described the first chamber gas-entered passageway or described the second chamber gas-entered passageway by the motion of slide block 7.Described control cavity is provided with an external air source suction port.Control piston 6 comprises a first piston 61 and one second piston 63, and described first piston 61 and described the second piston 63 connect in aggregates by a connecting rod 62, and described first piston or described the second piston can drive described slide block to slide.Described first piston 61 and described the second piston 63 are cut apart described control cavity to form one first control cavity 1001, one second control cavity 1002 and the 3rd control cavity 1003, described slide block is located at the described the 3rd and is controlled cavity 1003 inside, and described the first control cavity and described second is controlled cavity and is communicated with described the 3rd chamber by one first chamber gas-entered passageway and one second control cavity gas-entered passageway respectively, and the suction port of the suction port of described the first chamber gas-entered passageway and described the second chamber gas-entered passageway is located at the described the 3rd and is controlled cavity inside.Described the first chamber and described the second chamber interior are located at respectively in the two ends of reversing shaft 4, and the two ends of described reversing shaft can move left and right under the collision of described leather diaphragm and described the second epithelium.Reversing shaft is arranged on described air valve body, and can be with respect to described air valve body motion, and described air valve body is provided with some vents.In the time of the right side of reversing shaft in air valve body, external air source is the first chamber inflation, now first controls cavity gas-entered passageway and controls cavity and first by the 3rd and control cavity conducting, and gas is the first control cavity inflation; Reversing shaft can move left under the effect of external force, now first control cavity and outlet passageway 16 conductings, the first gas of controlling cavity inside is emitted, the through hole that reversing shaft is provided with is controlled the conducting of cavity gas-entered passageway by the secondth, second controls cavity gas-entered passageway controls cavity and the second control cavity conducting by the 3rd, is now the second chamber inflation.
The utility model also comprises the first chamber gas-entered passageway 51, general mood mouth 52 and the second chamber gas-entered passageway 53, and described the first chamber gas-entered passageway is communicated with the first chamber, and described the second chamber gas-entered passageway is communicated with described the second chamber.Air outlet is communicated with outlet passageway 16, described slider bottom is provided with a cavity, in the time that slide block slides into the first chamber gas-entered passageway top, slide block covers the first chamber suction port and air outlet, because slider bottom is provided with a cavity, the first chamber gas-entered passageway and air outlet conducting, the pressurized air of the first chamber interior is emitted from air outlet, now the second chamber gas-entered passageway and control valve conduit, gas enters into the second chamber interior; In the time that slide block slides into the second chamber gas-entered passageway top, slide block covers the second chamber suction port and air outlet, because slider bottom is provided with a cavity, and the second chamber gas-entered passageway and air outlet conducting, the pressurized air of the second chamber interior is emitted from air outlet, is now the first chamber inflation.Described the first chamber gas-entered passageway is communicated with described the first chamber 1, and described the second chamber gas-entered passageway is communicated with described the second chamber 2.Can control external air source by the control unit in the utility model and enter into the first chamber 1 inside or the second chamber 2 inside by institute's the first chamber gas-entered passageway or the second chamber gas-entered passageway.
The outside of the first chamber of the present utility model and the second chamber is respectively equipped with one first intake chamber 11 and the second intake chamber 12, the bottom of described the first intake chamber 11 and the second intake chamber 12 is all connected a liquid inlet pipe 14 and a drain pipe 15 with top, liquid inlet pipe and drain pipe one end are respectively equipped with an import, and the bottom at the top of described the first intake chamber and described the second intake chamber is equipped with a unidirectional ball valve 13.
The utility model also comprises a liquid inlet pipe 14 and a drain pipe 15, described liquid inlet pipe is communicated with described the first chamber and described the second chamber, and described drain pipe is communicated with the top of described the second chamber and described the first chamber, and one end of described liquid inlet pipe is provided with a liquid entering hole, one end of described drain pipe is provided with a liquid outlet.
Working principle of the present utility model is:
External air source enters into the 3rd and controls cavity inside, enter into the first control cavity and the first cavity inside, external air source is given the first cavity inflation, the leather diaphragm of the first cavity is by emptying the first intake chamber inside simultaneously, because its top or bottom connect respectively a non-return valve, the foot passage of the first intake chamber cuts off, gas or the liquid of the first intake chamber inside flow out from top, in the time that the air inflow of the first chamber interior reaches maximum, the epithelium collision reversing shaft of the second chamber, now the gas of the first control chamber chamber interior is emitted, external air source is the second control chamber inflation, therefore control piston moves, therefore control piston drives described slide block movement, slide block seals the suction port of the first chamber gas-entered passageway in the process of motion, simultaneously by the air inlet open of the second chamber gas-entered passageway, external air source is given the second chamber inflation, the second chamber is by emptying the second intake chamber inside simultaneously, because the top of the second intake chamber is connected respectively a non-return valve with bottom, therefore the second intake chamber is in emptying process, the gas of the second intake chamber inside or liquid can only flow out at top, the passage of the second intake chamber bottom cuts off, in the emptying process of the second intake chamber, because the second epithelium moves right always, therefore the second epithelium drives leather diaphragm to move right, first intake chamber's pressure decreased, now the passage at the first intake chamber top cuts off, the passage of bottom is opened, therefore liquid enters into the first intake chamber inside, circulation and so forth.Bleed pressure, in the air inlet of suction port place, by the motion of piston, drives air guide block to change compressed-air actuated runner and reaches the object of changing gas circuit, makes its air valve body running, and then central shaft drives the first chamber and the second chamber interior diaphragm to move reciprocatingly.Medium is entered by liquid entering hole place, after mixing at the first chamber and the second chamber, again from liquid outlet out, completes whole fluid delivery process.
The utility model is plastic partition membrane pump: it can solve following problem, 1, exhaust pathway is shortened, and relief opening adopts the plastic material can resistance to various severe operating modes at the back side 2, the air valve body of air inlet.3, the distributing valve of control unit work adopts external, safeguards more convenient.4, the filtrating equipment that increases suction port, has improved reliability.5, reversing shaft adopts monolithic construction, has overcome nonconcentricity, has improved the stability of work.6, distributing valve has increased potted line, makes the better tightness of control unit.7, replace metal well to economize on resources with plastics.8, got rid of the component damage problem causing because of impurity.
Claims (10)
1. a membrane pump with pneumatic drive, it is characterized in that, comprise one first chamber and the second chamber, between described the first chamber and described the second chamber, connect an air valve body, also comprise a control unit, described control unit can control described the first chamber or the second chamber is communicated with an external air source.
2. membrane pump with pneumatic drive according to claim 1, it is characterized in that, also comprise a leather diaphragm and one second epithelium, the surrounding of described leather diaphragm and described the second epithelium is fixed on described air valve body and forms described the first chamber and described the second chamber, and the two ends of a coupling shaft are connected and fixed on respectively on described leather diaphragm and described the second epithelium.
3. membrane pump with pneumatic drive according to claim 1, it is characterized in that, described air valve body inside is provided with one first chamber gas-entered passageway and one second chamber gas-entered passageway, described the first chamber gas-entered passageway is communicated with described the first chamber, and described the second chamber gas-entered passageway is communicated with described the second chamber.
4. membrane pump with pneumatic drive according to claim 1, is characterized in that, described control unit comprises a slide block, can be by the sealing of described the first chamber gas-entered passageway or described the second chamber gas-entered passageway by the motion of described slide block.
5. membrane pump with pneumatic drive according to claim 4, it is characterized in that, described control unit also comprises a control cavity, and described slide block is located at described control cavity inside, and can slide with respect to described control cavity, described control cavity is provided with an external air source suction port.
6. membrane pump with pneumatic drive according to claim 4, it is characterized in that, also comprise a control piston, it comprises a first piston and one second piston, described first piston and described the second piston are in aggregates by a connecting rod, and described first piston or described the second piston can drive described slide block to slide.
7. membrane pump with pneumatic drive according to claim 5, is characterized in that, also comprises a slide valve, and described slide valve is fixed on and on described air valve body, forms described control cavity.
8. membrane pump with pneumatic drive according to claim 6, it is characterized in that, described first piston and described the second piston are cut apart described control cavity to form one first control cavity, one second control cavity and the 3rd control cavity, described slide block is located at the described the 3rd and is controlled cavity inside, and the suction port of the suction port of described the first chamber gas-entered passageway and described the second chamber gas-entered passageway is located at described the 3rd control cavity inside.
9. membrane pump with pneumatic drive according to claim 8, it is characterized in that, also comprise one first control valve gas-entered passageway and one second control valve gas-entered passageway, the two ends of described the first control valve gas-entered passageway control cavity with described first respectively and described the 3rd control cavity is communicated with, and the two ends of described the second control valve gas-entered passageway control cavity with described second respectively and described the 3rd control cavity is communicated with.
10. membrane pump with pneumatic drive according to claim 2, it is characterized in that, also comprise a reversing shaft, described the first chamber and described the second chamber interior are located at respectively in the two ends of described reversing shaft, and the two ends of described reversing shaft can move left and right under the collision of described leather diaphragm and described the second epithelium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133031.XU CN203948264U (en) | 2014-03-21 | 2014-03-21 | A kind of membrane pump with pneumatic drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420133031.XU CN203948264U (en) | 2014-03-21 | 2014-03-21 | A kind of membrane pump with pneumatic drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948264U true CN203948264U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420133031.XU Expired - Lifetime CN203948264U (en) | 2014-03-21 | 2014-03-21 | A kind of membrane pump with pneumatic drive |
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| CN (1) | CN203948264U (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925200A (en) * | 2014-03-21 | 2014-07-16 | 上海如迪流体输送设备有限公司 | Pneumatic diaphragm pump |
| CN104804993A (en) * | 2015-05-27 | 2015-07-29 | 张伟伟 | Method for supplementing oxygen through environment-friendly and energy-saving standby oxygen recharger |
| CN104830675A (en) * | 2015-05-27 | 2015-08-12 | 潘磊 | Control valve |
| CN104847629A (en) * | 2015-05-27 | 2015-08-19 | 潘磊 | Liquid pumping method for pneumatic diaphragm pump |
| CN104845872A (en) * | 2015-05-27 | 2015-08-19 | 张伟伟 | Novel method for extracting biogas slurry through pneumatic diaphragm pump |
| CN104847633A (en) * | 2015-05-27 | 2015-08-19 | 潘磊 | Energy-saving flowing liquid extracting device |
| CN104891760A (en) * | 2015-05-27 | 2015-09-09 | 张伟伟 | Method for supplying oxygen for oxygenerator |
| CN104912780A (en) * | 2015-05-27 | 2015-09-16 | 张伟伟 | Method for drawing liquid through pneumatic diaphragm pump |
| CN104948432A (en) * | 2015-07-24 | 2015-09-30 | 朱陈伟 | Rotary spraying cleaning method |
| CN104938454A (en) * | 2015-05-27 | 2015-09-30 | 陆永柱 | Bait diffusing method for oxygen-enriched floating fishing device |
| CN104948433A (en) * | 2015-07-24 | 2015-09-30 | 朱陈伟 | Pneumatic rotary jet cleaner applied to cleaning of large barrel |
| CN104963843A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Energy-saving oxygen charging device driven by circulating power |
| CN104963842A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Adjustable jet rotating oxygen charging system |
| CN104957079A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Infinitely variable speed oxygen charging device |
| CN104963840A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Infinitely variable speed oxygen charging method |
| CN104963841A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Oxygen charging machine based on pneumatic motor |
| CN105003425A (en) * | 2015-07-24 | 2015-10-28 | 朱陈伟 | Kinetic energy output valve |
| CN105065242A (en) * | 2015-07-24 | 2015-11-18 | 朱陈伟 | Kinetic energy output method applicable to environment with flammable and explosive substances or high temperature environment |
| CN105065243A (en) * | 2015-07-24 | 2015-11-18 | 朱陈伟 | Friction-type air injection rotation oxygenating system |
| CN107701407A (en) * | 2017-10-20 | 2018-02-16 | 项达章 | A kind of Pneumatic type double-diaphragm pump |
| CN111252554A (en) * | 2020-03-02 | 2020-06-09 | 江西黑猫炭黑股份有限公司 | Conveying equipment for producing white carbon black by gas phase method |
-
2014
- 2014-03-21 CN CN201420133031.XU patent/CN203948264U/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925200A (en) * | 2014-03-21 | 2014-07-16 | 上海如迪流体输送设备有限公司 | Pneumatic diaphragm pump |
| CN104938454A (en) * | 2015-05-27 | 2015-09-30 | 陆永柱 | Bait diffusing method for oxygen-enriched floating fishing device |
| CN104804993A (en) * | 2015-05-27 | 2015-07-29 | 张伟伟 | Method for supplementing oxygen through environment-friendly and energy-saving standby oxygen recharger |
| CN104830675A (en) * | 2015-05-27 | 2015-08-12 | 潘磊 | Control valve |
| CN104847629A (en) * | 2015-05-27 | 2015-08-19 | 潘磊 | Liquid pumping method for pneumatic diaphragm pump |
| CN104845872A (en) * | 2015-05-27 | 2015-08-19 | 张伟伟 | Novel method for extracting biogas slurry through pneumatic diaphragm pump |
| CN104847633A (en) * | 2015-05-27 | 2015-08-19 | 潘磊 | Energy-saving flowing liquid extracting device |
| CN104891760A (en) * | 2015-05-27 | 2015-09-09 | 张伟伟 | Method for supplying oxygen for oxygenerator |
| CN104912780A (en) * | 2015-05-27 | 2015-09-16 | 张伟伟 | Method for drawing liquid through pneumatic diaphragm pump |
| CN104948433A (en) * | 2015-07-24 | 2015-09-30 | 朱陈伟 | Pneumatic rotary jet cleaner applied to cleaning of large barrel |
| CN104948432A (en) * | 2015-07-24 | 2015-09-30 | 朱陈伟 | Rotary spraying cleaning method |
| CN104963843A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Energy-saving oxygen charging device driven by circulating power |
| CN104963842A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Adjustable jet rotating oxygen charging system |
| CN104957079A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Infinitely variable speed oxygen charging device |
| CN104963840A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Infinitely variable speed oxygen charging method |
| CN104963841A (en) * | 2015-07-24 | 2015-10-07 | 朱陈伟 | Oxygen charging machine based on pneumatic motor |
| CN105003425A (en) * | 2015-07-24 | 2015-10-28 | 朱陈伟 | Kinetic energy output valve |
| CN105065242A (en) * | 2015-07-24 | 2015-11-18 | 朱陈伟 | Kinetic energy output method applicable to environment with flammable and explosive substances or high temperature environment |
| CN105065243A (en) * | 2015-07-24 | 2015-11-18 | 朱陈伟 | Friction-type air injection rotation oxygenating system |
| CN107701407A (en) * | 2017-10-20 | 2018-02-16 | 项达章 | A kind of Pneumatic type double-diaphragm pump |
| CN111252554A (en) * | 2020-03-02 | 2020-06-09 | 江西黑猫炭黑股份有限公司 | Conveying equipment for producing white carbon black by gas phase method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141119 |