CN2356029Y - Polyoxygen activation aeration oxygen automatic aerator - Google Patents
Polyoxygen activation aeration oxygen automatic aerator Download PDFInfo
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- CN2356029Y CN2356029Y CN99205224U CN99205224U CN2356029Y CN 2356029 Y CN2356029 Y CN 2356029Y CN 99205224 U CN99205224 U CN 99205224U CN 99205224 U CN99205224 U CN 99205224U CN 2356029 Y CN2356029 Y CN 2356029Y
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- oxygen
- sewage
- gathering
- impeller
- outer cylindrical
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model relates to a polyoxy activation aeration oxygen automatic aerator which belongs to the aeration and oxygenation equipment of sewage purification treating. A polyoxy device made of rare earth permanent magnetic material slices (4), etc. and a centripetal wheel (5) can gather oxygen. A motor (1) drives a hollow drive capstan (9) and a screw magnetizer vane (20) to rotate to magnetize the sewage and form negative pressure, so the oxygen-enriched air can be injected into the sewage. The oxygen-enriched air is blended into pieces under the function of the vane (20), centrifugal pressure-increasing vanes (18, 22) and a pressure-increasing cover (19), and then mixes with and dissolves in the sewage sufficiently to reach the air input and air pressure of the oxygen-enriched air. A direct projection airscrew (23) and a direct projection hole (24) eliminate the blind spot of the sewage. Thus, the air water mixed liquid can be led to further and deeper service area to form circular convection for aerating and increasing oxygen sufficiently.
Description
The utility model relates to the aeration oxygen replenishing equipment that a kind of environment protection sewage purification is handled; specifically: be a kind of can gathering the richness of the oxygen in the air; and activation treatment in addition; form negative pressure by the spiral magnetizing apparatus; paddle front end centrifugal impeller; the pressurization of the supercharging of blade back end centrifugal impeller and polyoxy device radial impeller; these oxygen enrichment activation air are injected sewage; again by spiral magnetizing apparatus paddle; the stirring of direct projection propeller; fragmentation becomes small oxygen enrichment bubble; in the direct projection hole; under the effect of guide shell; it is darker that these small oxygen enrichment bubbles are blended in sewage lagoon equably fully; in the farther service area waters, make large-scale sewage lagoon obtain the equipment of good aeration oxygen replenishing effect.
Key equipment in the biological treatment of sewage purification both at home and abroad at present mainly is centrifugal blower, Root's blower and various surface aerating machine, its power majority is at 290 kilowatts, 630 kilowatts, weight is many more than 3.5 tons, state-of-the artly reach 1.6-2 rice as RB-1 aeration machine impeller diameter, power is at 300 to 400 kilowatts.
The prior art that is close most with the utility model is a Chinese patent application, and name is called " polyoxy activation aeration oxygen replenishing device ", and the applying date is on August 30th, 97, and open day is on July 29th, 98, publication number CN1188745A.The structure of the disclosed polyoxy activation aeration oxygen replenishing device of this application mainly contains motor, by the negative pressure gas transmission tube of driven by motor rotation, promptly hollow capstan, polyoxy device, spiral magnetizing apparatus, guide shell, splitter etc.Framework that said polyoxy device is made by non-magnet material and the setting-in flaky rare earth permanent magnet body on it is formed, and is fixed on the upper end open place of housing by retaining screw; Said spiral magnetizing apparatus is made up of propeller cylinder, propeller blade, and setting-in rare-earth permanent magnet on the propeller blade, spiral magnetizing apparatus are installed in the lower end (being front end) of negative pressure gas transmission tube; The guide shell upper end is fixed by pillar stiffener with the lower end of shell, and the lower end of guide shell is the hydraucone shape, and the splitter of circular protruding peak shape is installed in hydraucone.The prior art volume is little, noiseless, simple in structure, little power consumption, high efficiency, owing to used guide shell and splitter, can make than deep layer waters and waters convection current far away, aeration, oxygenation but still exist because the pressure of oxygen enrichment activation air is not enough, amount of oxygen still is apparent not enough, the axial centre of propeller blade front end (lower end) produces the wake flow dead zone, the degree of depth and range to sewage aeration, oxygenation, stirring are all undesirable, and the dirt in the sewage enters shortcomings such as guide shell.
The purpose of this utility model is to overcome the deficiencies in the prior art, by increasing members such as dress radial impeller, centrifugal impeller, supercharging cover, direct projection propeller, netted link span, make the oxygen-rich air in the hollow capstan increase pressure, form the additional-air inlet tube in the outer cylindrical casing and increase tolerance, eliminate dead point, wake flow dead zone, bring up under the deep water enough negative pressure are arranged, suck enough oxygen enrichment activation high-pressure airs, realize the prerequisite of stirring, dissolved oxygen, the abundant prerequisite biological sewage treatment method of oxidation, improved decontamination effect improving and oxygen transfer efficiency
With prior art relatively: the first, the centrifugal supercharging impeller of blade back end has been installed in the paddle top of spiral magnetizing apparatus, make the oxygen-rich air of additional-air inlet tube also can enter sewage smoothly; The second, in the paddle bottom of spiral magnetizing apparatus the centrifugal supercharging impeller of paddle front end has been installed, make the oxygen-rich air supercharging, and form through pulverizing that more micro-bubble is full and uniform is mixed in the sewage, the condition of abundant dissolved oxygen is provided; The 3rd, bottom has refilled the direct projection propeller at the centrifugal supercharging impeller of paddle front end, add shape splitter top, epirelief peak and have the direct projection hole, can eliminate the wake flow dead zone at axial centre place, the sewage in dead zone is advanced in the darker sewage by the direct projection hole with oxygen-rich air mixing liquid goes; The 4th, the polyoxy device installs radial impeller additional, makes the oxygen-rich air pressurization enter hollow capstan, and can activate oxygen-rich air; The 5th, install netted link span additional, not only fixedly connected outer cylindrical casing and guide shell, and can tackle dirt, make sewage unimpeded again; The 6th, by floating drum whole device is placed in the sewage lagoon, the height on the water surface of device can be fixed, and settle stable.Oxygen-gathering, activating and aerating oxygenating machine concrete structure of the present utility model is described below.
Its structure includes motor, support, outer cylindrical casing, coaxial line is equipped with hollow capstan in columnar outer cylindrical casing the inside, hollow capstan one end connects by hollow shaft joint with motor, hollow capstan makes it and outer cylindrical casing and support location by the sealing bearing of its upper end, keep also under driven by motor, rotating with the outer cylindrical casing coaxial line, the framework setting-in rare-earth permanent magnetic film of gathering, activating device, the gathering, activating device is installed on the support; The spiral magnetizing apparatus is installed in the front end of hollow capstan, and setting-in rare-earth permanent magnet on the spiral magnetizing apparatus paddle, guide shell front end are bell mouth shape; It is characterized in that the centrifugal supercharging impeller of blade back end also is equipped with in the top of said spiral magnetizing apparatus, the centrifugal supercharging impeller of paddle front end also is equipped with in the below of spiral magnetizing apparatus, and the supercharging cover of umbrella is equipped with in the top of the centrifugal supercharging impeller of blade back end; The direct projection propeller is housed, has the direct projection hole in the bottom of the centrifugal supercharging impeller of paddle front end on the top of protruding peak shape splitter; Guide shell is fixed on the front end of outer cylindrical casing by netted link span; On the bearing support of sealing thrust block and lower seal bearing, have ventilating pit, on support, also have the additional-air inlet duct.
Specify by accompanying drawing below.
Description of drawings:
Fig. 1 is a gathering, activating device top view structural representation of the present utility model;
Fig. 2 is the side-looking structural representation of gathering, activating device of the present utility model;
Fig. 3 is an oxygen-gathering, activating and aerating oxygenating machine overall structure synoptic diagram of the present utility model.
The framework 3 that gathering, activating device of the present utility model is made by non-magnet material, rare-earth permanent magnetic film 4, radial impeller 5 etc. constitute.Framework 3 is to keep suitable distance and parallel annular plate to make mutually by two, and rare-earth permanent magnetic film 4 is inlaid between the parallel Circular Plate by radial, and is provided with breather hole.The radial impeller 5 of gathering, activating device is installed in the framework 3 middle annular distances, is fixed on the hollow capstan 9, and the three axially overlaps.Radial impeller and hollow capstan 9 will maintain the gap with framework 3 when doing rotation synchronously, and friction can not be arranged.The production well 5 of radial impeller 5 will be aimed at mutually with the air inlet port on the hollow capstan 9, so that air-flow is unimpeded.
Spiral magnetizing apparatus of the present utility model is to adopt non-magnet material to make, and it is fixed on an end under water of hollow capstan 9, it can rotate with hollow capstan 9 synchronous high-speeds, can walk a large amount of sewage plug-flows, paddle 20 front axles at the spiral magnetizing apparatus produce vacuum formation negative pressure to center wake flow place simultaneously, the oxygen enrichment activation air that hollow capstan is 9 li will be sucked in this negative pressuren zone, is become micro-bubble by propeller blade 20 fragmentations simultaneously and is mixed in the sewage.The many rare-earth permanent magnets 21 of setting-in on the propeller blade 20 of the present utility model, all sewage of being released by propeller all becomes magnetization sewage, for the activation oxygen in the small oxygen enrichment bubble provides the good condition of affinity, makes the more oxygen of dissolving in the sewage.
In order to make the utility model in that better aeration oxygen replenishing effect is obtained in profundal zone and wider waters, at the place, air outlet of the hollow capstan 9 in propeller blade 20 the place aheads the centrifugal supercharging impeller 22 of paddle front end is installed again, this centrifugal supercharging impeller 22 is with hollow capstan 9, when propeller blade 20 synchronous high-speeds rotate, 9 oxygen-rich air that provide are subjected to centrifugal action in the hollow capstan, can strengthen these gases once more and enter pressure in the sewage, make the abundant aeration oxygen replenishing of profundal zone.Positive front end at the centrifugal supercharging impeller 22 of paddle front end is installed a less direct projection propeller 23, guide shell 25 bottom centre in these direct projection propeller 23 right ons locate again, a direct projection hole 24 is opened on the top that is protruding peak shape splitter 28, the direct projection propeller 23 of when the operation of this machine, rotating with hollow capstan 9 synchronous high-speeds, just the gas at the place, turbulent static pressure dead point that the centrifugal supercharging impeller of paddle front end 22 bottoms are formed and sewage mixed solution are pushed in the sewage lagoon more the depths to by the direct projection hole, scatter to a distant place again.
Spiral magnetizing apparatus paddle 20 back of the body ends of the present utility model are installed a centrifugal supercharging impeller 18 of blade back end again, it and hollow capstan 9 synchronous high-speeds produce centrifugal force when rotating, under the cooperation of umbellate form supercharging cover 19, be transported in the sewage after effectively extracting the oxygen enrichment activation air of 13 li additional-air inlet tubes of outer cylindrical casing, 16 supplies out pressurization, also be broken simultaneously and stir into small oxygen enrichment bubble formation water, gas mixed solution.
The guide shell 25 of table utility model adopts the high-strength corrosion-resistant material to make.Several shunting tubes are pressed radial pattern and are constituted, concentrated unimpeded the entering of current will be convenient in its upper end, the bore in the orientation angles of lower end and direct projection hole 24 all will be decided according to the degree of depth in the sewage lagoon, shape and service range, and purpose is to make darker water layer and wider waters obtain sufficient aeration oxygen replenishing.
Fig. 3 is an overall structure synoptic diagram of the present utility model, the 20th, the paddle of spiral magnetizing apparatus, the 21st, be inlaid in the rare-earth permanent magnet on the paddle, the 22nd, the centrifugal supercharging impeller of paddle front end, the 23rd, the direct projection propeller, the 18th, the centrifugal supercharging impeller of blade back end, the above-mentioned parts in Fig. 3 all are axial concentric ends that is installed in hollow capstan 9, and can both be by the rotation synchronously of this axle.During spiral magnetizing apparatus paddle 20 high speed rotating, sewage is pushed to and advances, the water that is pushed into is all magnetized by rare-earth permanent magnet 21, become magnetization sewage, be formed centrally vacuum in simultaneously before spiral magnetizing apparatus paddle 20, produce negative pressuren zone, oxygen-rich air in the hollow capstan 9, just be drawn onto in the negative pressuren zone, the centrifugal force that the centrifugal supercharging impeller 22 of the paddle front end of high speed rotating produces is transported to the oxygen-rich air intensified pressure that sucks in the negative pressuren zone in the sewage of deep layer cellular convection again, and the air of these oxygen enrichments is mixed into the condition that abundant dissolved oxygen is provided in the sewage uniformly through the broken micro-bubble that forms of plug-flow.When direct projection propeller 23 is rotated with hollow capstan 9 synchronous high-speeds, water, the gas mixed solution at the dead point, cellular convection dead zone of the centrifugal supercharging impeller of paddle front end 22 front end centers, release is passed in the 24 directive sewage lagoons of direct projection hole more in the deep layer, and then radiation is scattered.The centrifugal supercharging impeller of blade back end 18 is during with hollow capstan 9 synchronous high-speeds rotation, the centrifugal force of generation the oxygen-rich air sucking-off supercharging in the helping air supply tube 16 after, be transported in the darker wider cellular convection sewage.Guide shell 25, its radiating direction of these several guide shells and angle are to decide according to pond type, the degree of depth and range, so that the more uniform transporting of sewage cellular convection that propeller is pushed away, in the more deep and broad coverage of directive, reach good aeration oxygen replenishing effect.Supercharging cover 19 on the netted link span 27 is the oxygen-rich air guiding supercharging of centrifugal supercharging impeller 18 sucking-offs of blade back end, the 26th, the ventilating pit on sealing bearing 17 bearing supports, the 17th, sealing bearing, the 15th, the sealing thrust block, the 14th, the ventilating pit on the sealing thrust metal, the 13rd, outer cylindrical casing, the 12nd, floating drum, the 11st, the floating drum platen, the 10th, sealing bearing, the 9th, hollow capstan, the 8th, the air inlet duct on the support, the 7th, hollow shaft joint, the 6th, polyoxy device radial impeller air inlet port, the 5th, polyoxy device radial impeller, the 4th, rare-earth permanent magnetic film, the 3rd, gathering, activating device framework, the 2nd, support, the 1st, outdoor electric motor.
Floating drum 12 can have circular ring type, also can have two to six.Be contained in the upper end of outer cylindrical casing 13 by floating drum stationary platen 11.
The utility model utilizes faraday magnetic diffusivity principle, different substances has different magnetic permeabilities, and the paramagnetic physical efficiency allows the spatial magnetic line of force more by oneself, and diamagnetic substance then can repel magnetic line of force, around this principle, paramagnetic material will be to the high regional movement of density of line of magnetic force.The susceptibility Xm=1.9 of oxygen * 10 in the air
-6, and the susceptibility Xm=0.013 of nitrogen * 10
-6, the susceptibility of oxygen is higher 146.15 times than nitrogen, and oxygen is paramagnetic material, and nitrogen is diamagnetic substance.We adopt the high energy rare-earth permanent magnet to make the gathering, activating device, and the oxygen convergence magnet of paramagnetic material, the nitrogen of diamagnetic substance are away from magnet, so can produce the effect of rich polyoxy.
With suitable flow velocity flow through suitable intensity magnetic field and with the vertical water in magnetic field, also claim magnetized water, these destroy because of hydrogen bond and long-range navigation is grown the water of the effect of power, not only change of properties such as its mechanics, physical chemistry but can improve the avidity of oxygen and water, increase the saturation solubility of dissolved oxygen in water, this is to very helpful with the effect of biological method purification sewage.
Spiral magnetizing apparatus of the present utility model can be pushed forward sewage, can become magnetization sewage to sewage simultaneously.Between polyoxy device and spiral magnetizing apparatus hollow capstan is housed, the formation oxygen-rich air enters the main channel in the sewage.Hollow capstan also is equipped with outer cylindrical casing outward, forms the helping air supply passage between this capstan and outer cylindrical casing again.Centrifugal supercharging impeller of paddle front end and the centrifugal supercharging impeller of blade back end are housed on spiral magnetizing apparatus paddle again, when spiral magnetization paddle and the rotation of hollow capstan synchronous high-speed, produce vacuum at wake flow place, the preceding center of paddle, form negative pressuren zone, in the oxygen-rich air inspiration sewage that the interaction energy of this negative pressure is sent hollow capstan here, but just must just can make profundal zone be input into oxygen-rich air for the gas pressure boost in the hollow capstan when sewage is dark by the centrifugation of centrifugal supercharging impeller before the paddle, for increasing the coverage in the sewage lagoon, and provide abundanter oxygen-rich air, by the centrifugal supercharging impeller of dress blade back end, producing centrifugal force when its high speed rotating can be adding in the cellular convection sewage after the extraction of the oxygen-rich air in the helping air supply tube supercharging at spiral magnetizing apparatus blade back end.The front end of centrifugal supercharging impeller is equipped with the direct projection propeller before paddle, and it can pass the direct projection hole to the air water mixed solution in turbulent dead zone, and directive is more in the deep layer sewage.Press the guide shell of radiation law by dress, its quantity, angle are all decided according to the sewage lagoon type, and the effect of direct projection hole, guide shell is exactly in the darker farther service waters of established sewage cellular convection directive.Be input into oxygen-rich air in the sewage under the effect of the propeller of high speed rotating and impeller, fully stir, broken, mix, become small bubble, be blended in the sewage uniformly, oxygen in these small bubbles when polyoxy by strong magnetic activating, after rapid decompression, can improve the saturation ratio of dissolved oxygen in the sewage and the transfer efficiency of oxygen with magnetization sewage affinity better: through the direct projection hole, the water that guide shell penetrates, the gas mixed solution causes the turbulent flow between the service area of waters at the bottom of the sewage lagoon, constitute circulation with the spout water inlet, the kinetic energy of the small bubbles that float after the decompression passes to water medium, also constitute the circulation of upper water and spout water inlet, full pond sewage is evenly stirred, and because oxygen enrichment small bubbles come-up the time is the curve conduct, stroke and the time of prolongation in sewage, the various oxidising processs when sewage purification is handled have been promoted.These small oxygen enrichment activation air filled cavitys can also play pneumatically supported effect in magnetization sewage simultaneously, the impurity such as suspension fiber in the sewage are inhaled to climb up on top of the water clear up away.
Claims (3)
1, a kind of oxygen-gathering, activating and aerating oxygenating machine, its structure includes motor (1), support (2), outer cylindrical casing (13), coaxial line is equipped with hollow capstan (9) in columnar outer cylindrical casing (13) the inside, hollow capstan (9) one ends connect by hollow shaft joint (7) with motor (1), hollow capstan (9) is by the sealing bearing (10) of its upper end, make it and outer cylindrical casing (13) and support (2) location, keep also under motor (1) drives, rotating with outer cylindrical casing (13) coaxial line, the framework of gathering, activating device (3) is gone up setting-in rare-earth permanent magnetic film (4), and the gathering, activating device is installed on the support (2); The spiral magnetizing apparatus is installed in the front end of hollow capstan (9), and spiral magnetizing apparatus paddle (20) goes up setting-in rare-earth permanent magnet (21); Guide shell (25) front end is a bell mouth shape; It is characterized in that, the centrifugal supercharging impeller of blade back end (18) also is equipped with in the top of said spiral magnetizing apparatus, the centrifugal supercharging impeller of paddle front end (22) also is equipped with in the below of spiral magnetizing apparatus, and the supercharging cover (19) of umbrella is equipped with in the top of the centrifugal supercharging impeller of blade back end (18); In the bottom of the centrifugal supercharging impeller of paddle front end (22) direct projection propeller (23) is housed, has direct projection hole (24) on the top of protruding peak shape splitter (28); Guide shell (25) is fixed on the front end of outer cylindrical casing (13) by netted link span (27), has ventilating pit (14,26) on the bearing support of sealing thrust block (15) and lower seal bearing (17), also has additional-air inlet duct (8) on support (2).
2, according to the described oxygen-gathering, activating and aerating oxygenating machine of claim 1, it is characterized in that said gathering, activating device also includes radial impeller (5), radial impeller (5) is installed in the middle annular distance of framework (3), be fixed on the hollow capstan (9), the three axially overlaps, radial impeller (5) and framework (3) maintain the gap, do not have with framework (3) during rotation and rub.
3, according to claim 1 or 2 described oxygen-gathering, activating and aerating oxygenating machines, it is characterized in that, one to six floating drum (12) is housed by floating drum stationary platen (11) in the upper end of outer cylindrical casing (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99205224U CN2356029Y (en) | 1999-03-22 | 1999-03-22 | Polyoxygen activation aeration oxygen automatic aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99205224U CN2356029Y (en) | 1999-03-22 | 1999-03-22 | Polyoxygen activation aeration oxygen automatic aerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2356029Y true CN2356029Y (en) | 1999-12-29 |
Family
ID=33999828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99205224U Expired - Lifetime CN2356029Y (en) | 1999-03-22 | 1999-03-22 | Polyoxygen activation aeration oxygen automatic aerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2356029Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006102802A1 (en) * | 2005-03-30 | 2006-10-05 | Shulin Sun | An actived dissolved oxygen aerator |
| CN102794121A (en) * | 2011-05-25 | 2012-11-28 | 乔治洛德方法研究和开发液化空气有限公司 | Equipment for injecting a gas into a cesspool |
| TWI405727B (en) * | 2009-04-08 | 2013-08-21 | Tsurumi Mfg | Submersible aerator |
| CN106517400A (en) * | 2015-09-09 | 2017-03-22 | 周衍涛 | Air dissolving and aeration machine |
| CN108793387A (en) * | 2018-08-29 | 2018-11-13 | 广州市环境保护工程设计院有限公司 | Aeration system |
| CN116328482A (en) * | 2023-04-12 | 2023-06-27 | 舟山市生态环境应急与监控监测中心 | Treatment device for gas flow containing fluorine compound |
-
1999
- 1999-03-22 CN CN99205224U patent/CN2356029Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006102802A1 (en) * | 2005-03-30 | 2006-10-05 | Shulin Sun | An actived dissolved oxygen aerator |
| TWI405727B (en) * | 2009-04-08 | 2013-08-21 | Tsurumi Mfg | Submersible aerator |
| CN102794121A (en) * | 2011-05-25 | 2012-11-28 | 乔治洛德方法研究和开发液化空气有限公司 | Equipment for injecting a gas into a cesspool |
| CN103945927A (en) * | 2011-05-25 | 2014-07-23 | 乔治洛德方法研究和开发液化空气有限公司 | Equipment for injecting a gas into a cesspool |
| US10233101B2 (en) | 2011-05-25 | 2019-03-19 | L'Air Liquide, Société Anonyme pour l'Etude et l'Exploration des Procédés Georges Claude | Equipment for injecting a gas into a cesspool |
| CN106517400A (en) * | 2015-09-09 | 2017-03-22 | 周衍涛 | Air dissolving and aeration machine |
| CN108793387A (en) * | 2018-08-29 | 2018-11-13 | 广州市环境保护工程设计院有限公司 | Aeration system |
| CN116328482A (en) * | 2023-04-12 | 2023-06-27 | 舟山市生态环境应急与监控监测中心 | Treatment device for gas flow containing fluorine compound |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |