CN111013359A - Environment-friendly exhaust treatment device - Google Patents
Environment-friendly exhaust treatment device Download PDFInfo
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- CN111013359A CN111013359A CN201911424681.3A CN201911424681A CN111013359A CN 111013359 A CN111013359 A CN 111013359A CN 201911424681 A CN201911424681 A CN 201911424681A CN 111013359 A CN111013359 A CN 111013359A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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Abstract
The invention relates to an environment-friendly waste gas treatment device, which belongs to the field of environment-friendly equipment and comprises a tank body, wherein a partition plate is arranged in the tank body, the tank body is divided into an upper decomposition bin and a lower filtering bin by the partition plate, the filtering bin and the decomposition bin are communicated through a communicating pipe, a water inlet pipe is arranged on one side of the filtering bin, a first valve is arranged on the water inlet pipe, an air inlet pipe is arranged on one side of the filtering bin, the air inlet pipe extends into the filtering bin and faces downwards, and an air outlet pipe and a safety valve are arranged at the top of the decomposition bin. Through the setting of the baffle in the jar body, separate into the decomposition storehouse on upper portion and the filter storehouse of lower part with the jar body, the setting of integral type, waste gas after the washing in the lower part filter storehouse, dust impurity subsides, and other waste gases are emptied after decomposing in the decomposition storehouse through communicating pipe, and area is little, and the power consumption is low, and is safe environmental protection.
Description
Technical Field
The invention relates to the field of environment-friendly equipment, in particular to an environment-friendly waste gas treatment device.
Background
The waste gas refers to toxic and harmful gas discharged by human in the production and living process. Especially chemical plants, steel plants, pharmaceutical plants, coking plants and oil refineries, etc., the discharged waste gas has large odor, seriously pollutes the environment and affects the human health.
The industrial waste gas is a general name of various pollutant-containing gases discharged into air in the process of fuel combustion and production processes in factory areas of enterprises, and the industrial waste gas contains ammonia, trimethylamine, hydrogen sulfide, methylthio hydrogen, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide, styrene, sulfides, volatile organic compounds, molecular chain structures of benzene, toluene and xylene, molecular chains of organic or inorganic high-molecular malodorous compounds, granular pollutants such as dust and pathogenic microorganisms.
The industrial waste gas treatment principle includes various principles such as an activated carbon adsorption method, a catalytic combustion method, a catalytic oxidation method, an acid-base neutralization method, biological washing, a biological trickling filtration method, a plasma method, UV photolysis purification and the like. After the UV photolysis purification equipment is input into the purification equipment by using exhaust equipment, the purification equipment uses high-energy UV ultraviolet light beams and ozone to carry out a synergistic decomposition oxidation reaction on the industrial waste gas, so that the industrial waste gas is degraded and converted into low-molecular compounds, water and carbon dioxide, and then is discharged outdoors through an exhaust pipeline.
The license publication No. CN205461721U discloses an environment-friendly waste gas treatment device, which comprises a dust removal tower and a washing tower, wherein the dust removal tower comprises a middle box body, a support, an ash bucket, an upper box body and a blowing device, the ash bucket is fixedly arranged on the support, the middle box body is arranged on the ash bucket, the upper box body is fixedly arranged on the middle box body, an air inlet is arranged on the side wall below the middle box body, and an air outlet is arranged on the side wall of the upper box body; a blowing device is arranged at the joint of the upper box body and the middle box body, the output end of the blowing device is connected with the spray pipes, the spray pipes are all arranged in the middle box body, a plurality of air outlet holes are formed in the spray pipes, the lower ends of the air outlet holes are provided with pore plates, and a plurality of through holes are formed in the pore plates; the invention improves the purification efficiency, and meanwhile, the photolysis filter device realizes the rapid online individual change of the photolysis filter device through the unique structural design without stopping detection, and has the advantages of simple manufacture and convenient use. However, the dust removal tower and the washing tower are arranged in a straight line, and the middle of the dust removal tower and the washing tower are connected through a pipeline, so that the defects of large occupied area and high energy consumption exist at all.
Disclosure of Invention
Aiming at the defects of large occupied area and high energy consumption of the existing environment-friendly waste gas treatment device that equipment is arranged in a straight line and the middle of the existing environment-friendly waste gas treatment device is connected through a pipeline, the invention aims to provide the environment-friendly waste gas treatment device.
In order to achieve the purpose, the invention provides an environment-friendly waste gas treatment device which comprises a tank body, wherein a partition plate is arranged in the tank body, the partition plate divides the tank body into an upper decomposition bin and a lower filtering bin, the filtering bin and the decomposition bin are communicated through a communicating pipe, a water inlet pipe is arranged on one side of the filtering bin, a first valve is arranged on the water inlet pipe, an air inlet pipe is arranged on one side of the filtering bin, the air inlet pipe extends into the filtering bin and faces downwards, and an air outlet pipe and a safety valve are arranged at the top of the decomposition bin.
The working principle is as follows: the water is added into the filter bin through the water inlet pipe, the end part of the air inlet pipe is submerged on the water surface, the first valve is closed, the second valve and the first fan are opened, the waste gas enters the water bin through the air inlet pipe under the action of the fans, dust impurities are soaked in the water and then fall to the bottom of the filter bin under the action of gravity, other waste gas enters the decomposition bin through the communicating pipe to be decomposed, clean gas after decomposition is discharged from the air outlet pipe, the arrangement of the safety valve balances the external air pressure and the air pressure in the decomposition bin to ensure safety, the tank body is divided into the decomposition bin at the upper part and the filter bin at the lower part through the arrangement of the partition board in the tank body, the dust impurities are settled after the waste gas is washed by water in the filter bin at the lower part, other waste gas is decomposed and discharged after being decomposed in the decomposition bin through the communicating pipe, the occupied area is small, the energy, the middle of the device is connected through a pipeline, and the defects of large occupied area and high energy consumption exist at all.
Preferably, set up a plurality of photodissociation fluorescent tubes of bilateral symmetry in the decomposition storehouse, the vertical second ozone pipe that is provided with in the decomposition storehouse, the second ozone pipe is located the centre of photodissociation fluorescent tube, be provided with a plurality of first through-holes on the second ozone pipe, the second ozone pipe extends to the outside in decomposition storehouse, in the decomposition storehouse outside be provided with rotary drive mechanism on the second ozone pipe, the second ozone pipe has the mechanism that supplies ozone through rotary joint intercommunication. Waste gas without dust impurities passes through the photolysis lamp tube, the photolysis lamp tube emits high-energy ultraviolet light beams, molecular chains of high-molecular malodorous compounds of organic high-molecular waste gas pollutants are degraded and converted into low-molecular organic matters under the irradiation of the high-energy ultraviolet light beams, meanwhile, the ozone supply mechanism is opened, ozone is introduced into the second ozone tube, the ozone flows out from the first through hole, the low-molecular organic matters react to generate carbon dioxide, water and nitrogen under the action of the ozone, and meanwhile, the rotary driving mechanism drives the second ozone tube to rotate to stir gas in the decomposition bin, so that the ozone can be thoroughly contacted with the low-molecular organic matters to be thoroughly oxidized and decomposed; the photolytic lamp tube can be controlled by a controller or directly controlled by a switch.
Preferably, the ozone supply mechanism comprises an ozone tank positioned on the outer side of the tank body, a first ozone pipe communicated with the ozone tank, and a second fan and a third valve which are positioned on the first ozone pipe, and the first ozone pipe is communicated with the second ozone pipe through the rotary joint. The ozone incasement has ozone, opens the third valve, and under the effect of second fan, ozone in the ozone incasement gets into the second ozone pipe through first ozone pipe to in getting into the decomposition storehouse through first through-hole, rotary joint is prior art, can purchase from the market and obtain relevant product, and its effect makes first ozone pipe motionless, and the second ozone pipe can rotate under rotary drive mechanism's effect.
Preferably, the rotary driving mechanism comprises a driven gear positioned on the second ozone tube, a driving gear engaged with the driven gear and a motor driving the driving gear. The motor drives the driving gear to rotate, the driving gear is meshed with the driven gear to drive the driven gear to rotate, and therefore the second ozone tube is driven to rotate.
Preferably, a plurality of stirring fan blades are arranged on the second ozone tube in the decomposition bin, and the stirring fan blades and the photolysis lamp tube are arranged in a staggered mode. The arrangement of a plurality of stirring fan blades ensures that the gas can be fully and uniformly mixed, and the photolysis and ozonolysis effects are good.
More preferably, a plurality of second through holes are formed in the stirring fan blade. The setting of second through-hole, it is more smooth and easy when the stirring, and can form the air current stirring, the stirring effect is better.
Preferably, the bottom of the filter bin is provided with a drain outlet, and the drain outlet is provided with an openable door. After the filtration is finished, the door is opened, and the sludge and the sewage are discharged from the sewage outlet.
Preferably, the air inlet pipe is provided with a second valve and a first fan. The waste gas smoothly enters the filtering bin.
Preferably, the communication pipe is provided in plurality. The filtered gas can be conveniently decomposed in the decomposition bin through the filter.
Preferably, the two communicating pipes are symmetrical left and right. The air flow is enabled to pass smoothly.
In summary, compared with the prior art, the invention has the following beneficial effects:
(1) the tank body is divided into an upper decomposition bin and a lower filtering bin by the arrangement of the partition board in the tank body, the waste gas is washed in the lower filtering bin, dust and impurities are settled, and other waste gas is decomposed in the decomposition bin and then is emptied by the communicating pipe, so that the occupied area is small, the energy consumption is low, and the tank is safe and environment-friendly;
(2) waste gas without dust impurities passes through the photolysis lamp tube, the photolysis lamp tube emits high-energy ultraviolet light beams, molecular chains of high-molecular malodorous compounds of organic high-molecular waste gas pollutants are degraded and converted into low-molecular organic matters under the irradiation of the high-energy ultraviolet light beams, meanwhile, the ozone supply mechanism is opened, ozone is introduced into the second ozone tube, the ozone flows out from the first through hole, the low-molecular organic matters react to generate carbon dioxide, water and nitrogen under the action of the ozone, and meanwhile, the rotary driving mechanism drives the second ozone tube to rotate to stir gas in the decomposition bin, so that the ozone can be thoroughly contacted with the low-molecular organic matters to be thoroughly oxidized and decomposed;
(3) in the technical scheme of the application, the photolysis lamp tube can work together with ozone or separately and independently work, and when the photolysis lamp tube works independently, photolysis or ozone decomposition is performed firstly;
(4) the third valve is opened, and under the action of the second fan, ozone in the ozone box enters the second ozone pipe through the first ozone pipe and enters the decomposition bin through the first through hole;
(5) the motor drives the driving gear to rotate, the driving gear is meshed with the driven gear to drive the driven gear to rotate, and therefore the second ozone tube is driven to rotate;
(6) the arrangement of a plurality of stirring blades ensures that the gas can be fully and uniformly mixed, and the photolysis and ozone decomposition effects are good;
(7) the second through holes are arranged, so that the stirring is smoother, airflow stirring can be formed, and the stirring effect is better;
(8) after the filtration is finished, the door is opened, and the sludge and the sewage are discharged from the sewage discharge outlet, so that the equipment can be reused conveniently.
Drawings
FIG. 1 is a schematic view showing the construction of an environment-friendly exhaust gas treatment device according to the present invention.
Labeled as: 1-tank body, 2-partition board, 3-water inlet pipe, 4-first valve, 5-sewage outlet, 6-sealing door, 7-air inlet pipe, 8-second valve, 9-communicating pipe, 10-air outlet pipe, 11-safety valve, 12-photolysis lamp tube, 13-ozone tank, 14-first ozone tube, 15-second ozone tube, 16-first through hole, 17-rotary joint, 18-second fan, 19-third valve, 20-stirring fan blade, 21-second through hole, 22-driving gear, 23-driven gear, 24-motor and 25-first fan.
Detailed Description
All features disclosed in this specification may be combined in any combination, except features and/or steps that are mutually exclusive.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described in detail with reference to fig. 1 and the specific embodiments.
Example 1
Referring to fig. 1, an environment-friendly exhaust treatment device, including a jar body 1, be provided with baffle 2 in jar body 1, baffle 2 separates into the decomposition storehouse on upper portion and the filtration storehouse of lower part with jar body 1, filter the storehouse with through communicating pipe 9 intercommunication between the decomposition storehouse, one side of filtering the storehouse is provided with inlet tube 3, be provided with first valve 4 on the inlet tube 3, one side of filtering the storehouse is provided with intake pipe 7, intake pipe 7 extends to filter in the storehouse and head down, the top of decomposition storehouse is provided with outlet duct 10 and relief valve 11.
The working principle is as follows: water is added into a filter bin through a water inlet pipe 3, the end part of an air inlet pipe 7 is submerged on the water surface, a first valve 4 is closed, a second valve 8 and a first fan 25 are opened, waste gas enters the water bin through the air inlet pipe 7 under the action of the fan, dust impurities are soaked in the water and then fall to the bottom of the filter bin under the action of gravity, other waste gas enters the decomposition bin through a communicating pipe 9 to be decomposed, clean gas after decomposition is discharged from an air outlet pipe 10, the arrangement of a safety valve 11 balances the air pressure in the outside and the decomposition bin to ensure safety, the tank body 1 is divided into the decomposition bin at the upper part and the filter bin at the lower part through the arrangement of a partition plate 2 in the tank body 1, the dust impurities are settled after the waste gas is washed in the filter bin at the lower part, other waste gas is discharged after decomposition in the decomposition bin through the communicating pipe 9, the occupied area is small, the energy consumption is low, the device is safe and, the middle of the device is connected through a pipeline, and the defects of large occupied area and high energy consumption exist at all.
Example 2
Referring to fig. 1, set up bilateral symmetry's a plurality of photodissociation fluorescent tubes 12 in the decomposition bin, the vertical second ozone pipe 15 that is provided with in the decomposition bin, second ozone pipe 15 is located the centre of photodissociation fluorescent tube 12, be provided with a plurality of first through-holes 16 on the second ozone pipe 15, second ozone pipe 15 extends to the outside of decomposition bin, the decomposition bin outside be provided with rotary driving mechanism on the second ozone pipe 15, second ozone pipe 15 has through rotary joint 17 intercommunication and supplies ozone mechanism.
Waste gas without dust impurities passes through the photolysis lamp tube 12, the photolysis lamp tube 12 emits high-energy ultraviolet light beams, molecular chains of high-molecular malodorous compounds of organic high-molecular waste gas pollutants are degraded and converted into low-molecular organic matters under the irradiation of the high-energy ultraviolet light beams, meanwhile, the ozone supply mechanism is opened, ozone is introduced into the second ozone tube 15, the ozone flows out from the first through hole 16, the low-molecular organic matters react under the action of the ozone to generate carbon dioxide, water and nitrogen, meanwhile, the rotary driving mechanism drives the second ozone tube 15 to rotate to stir gas in a decomposition bin, so that the ozone can be thoroughly contacted with the low-molecular organic matters to be thoroughly oxidized and decomposed; the photolytic lamp 12 may be controlled by a controller or directly by a switch.
Example 3
Referring to fig. 1, the ozone supply mechanism includes an ozone tank 13 located outside the tank 1, a first ozone pipe 14 communicated with the ozone tank 13, and a second fan 18 and a third valve 19 located on the first ozone pipe 14, wherein the first ozone pipe 14 is communicated with the second ozone pipe 15 through the rotary joint 17.
The ozone box 13 is internally provided with ozone, the third valve 19 is opened, under the action of the second fan 18, the ozone in the ozone box 13 enters the second ozone pipe 15 through the first ozone pipe 14 and enters the decomposition bin through the first through hole 16, the rotary joint 17 is the prior art, related products can be purchased from the market, the function of the rotary joint is to fix the first ozone pipe 14, and the second ozone pipe 15 can rotate under the action of the rotary driving mechanism.
Example 4
Referring to fig. 1, the rotary driving mechanism includes a driven gear 23 located on the second ozone tube 15, a driving gear 22 engaged with the driven gear 23, and a motor 24 driving the driving gear 22.
The motor 24 drives the driving gear 22 to rotate, the driving gear 22 is engaged with the driven gear 23 to drive the driven gear 23 to rotate, so as to drive the second ozone tube 15 to rotate.
Example 5
Referring to fig. 1, a plurality of stirring blades 20 are disposed on the second ozone tube 15 in the decomposition bin, and the stirring blades 20 and the photolysis lamp 12 are staggered.
The arrangement of a plurality of stirring fan blades 20 ensures that the gas can be fully and uniformly mixed, and the photolysis and ozonolysis effects are good.
Example 6
Referring to fig. 1, the stirring fan 20 is provided with a plurality of second through holes 21.
The setting of second through-hole 21 is more smooth and easy when the stirring, and can form the air current stirring, and stirring effect is better.
Example 7
Referring to fig. 1, a sewage draining outlet 5 is arranged at the bottom of the filtering bin, and an openable door is arranged on the sewage draining outlet 5.
After the filtration is finished, the door is opened, and the sludge and the sewage are discharged from the sewage outlet 5.
Example 8
Referring to fig. 1, the intake duct 7 is provided with a second valve 8 and a first fan 25.
The waste gas smoothly enters the filtering bin.
Example 9
Referring to fig. 1, there are a plurality of communication pipes 9.
The filtered gas can be conveniently decomposed in the decomposition bin through the filter.
Example 10
Referring to fig. 1, the communication pipes 9 are two in number and are symmetrical to each other.
The air flow is enabled to pass smoothly.
It should be understood by those skilled in the art that the photolysis lamp tube, the first fan, the second fan, the motor and the like in the present application belong to the prior art, and products of different models and specifications can be purchased in the market according to specific requirements.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (10)
1. The utility model provides an environment-friendly exhaust treatment device, includes a jar body (1), its characterized in that, be provided with baffle (2) in jar body (1), baffle (2) separate into the decomposition storehouse on upper portion and the filtration storehouse of lower part with jar body (1), filter the storehouse with through communicating pipe (9) intercommunication between the decomposition storehouse, the one side of filtering the storehouse is provided with inlet tube (3), be provided with first valve (4) on inlet tube (3), the one side of filtering the storehouse is provided with intake pipe (7), intake pipe (7) extend to filter in the storehouse and head down, the top of decomposition storehouse is provided with outlet duct (10) and relief valve (11).
2. The environment-friendly exhaust gas treatment device according to claim 1, wherein a plurality of photolysis lamp tubes (12) are arranged in the decomposition bin in a bilateral symmetry manner, a second ozone tube (15) is vertically arranged in the decomposition bin, the second ozone tube (15) is positioned in the middle of the photolysis lamp tubes (12), a plurality of first through holes (16) are arranged on the second ozone tube (15), the second ozone tube (15) extends to the outer side of the decomposition bin, a rotary driving mechanism is arranged on the second ozone tube (15) on the outer side of the decomposition bin, and the second ozone tube (15) is communicated with an ozone supply mechanism through a rotary joint (17).
3. The environment-friendly exhaust gas treatment device according to claim 2, wherein the ozone supply mechanism comprises an ozone tank (13) located outside the tank body (1), a first ozone pipe (14) communicated with the ozone tank (13), and a second fan (18) and a third valve (19) located on the first ozone pipe (14), and the first ozone pipe (14) is communicated with the second ozone pipe (15) through the rotary joint (17).
4. The environmental friendly exhaust gas treatment device according to claim 2, wherein the rotary driving mechanism comprises a driven gear (23) provided on the second ozone pipe (15), a driving gear (22) engaged with the driven gear (23), and a motor (24) for driving the driving gear (22).
5. The environmental-friendly exhaust gas treatment device according to claim 2, wherein a plurality of stirring blades (20) are disposed on the second ozone tube (15) in the decomposition bin, and the stirring blades (20) and the photolysis lamp tube (12) are staggered.
6. The environmental-friendly exhaust gas treatment device according to claim 5, wherein the stirring fan blades (20) are provided with a plurality of second through holes (21).
7. The environment-friendly waste gas treatment device as claimed in claim 1, wherein a sewage draining outlet (5) is arranged at the bottom of the filtering bin, and an openable sealing door (6) is arranged on the sewage draining outlet (5).
8. An environment-friendly exhaust gas treatment device according to claim 1, wherein the inlet pipe (7) is provided with a second valve (8) and a first fan (25).
9. The environment-friendly exhaust gas treatment device according to claim 1, wherein the communication pipe (9) is provided in plurality.
10. The environmental-friendly exhaust gas treatment device according to claim 1, wherein the communicating pipes (9) are two in number and are bilaterally symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424681.3A CN111013359A (en) | 2019-12-31 | 2019-12-31 | Environment-friendly exhaust treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424681.3A CN111013359A (en) | 2019-12-31 | 2019-12-31 | Environment-friendly exhaust treatment device |
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| CN111013359A true CN111013359A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911424681.3A Pending CN111013359A (en) | 2019-12-31 | 2019-12-31 | Environment-friendly exhaust treatment device |
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| CN (1) | CN111013359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933802A (en) * | 2021-02-09 | 2021-06-11 | 山西程氏汇通科技有限公司 | Moxa smoke purifier |
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| CN208194069U (en) * | 2018-03-01 | 2018-12-07 | 四川宜康环保科技有限公司 | A kind of novel UV photodissociation waste gas treatment equipment |
| CN109276981A (en) * | 2018-12-02 | 2019-01-29 | 江苏振达环保科技有限公司 | A kind of exhaust gas microwave purifying device |
| CN110354661A (en) * | 2019-07-16 | 2019-10-22 | 南京艾尔普特环保科技有限公司 | A kind of uv photodissociation emission-control equipment |
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| DE19836519A1 (en) * | 1998-08-12 | 2000-02-17 | Hofmann Kurt | Reactor for the removal of odors using UV radiation together with catalysts |
| CN106540526A (en) * | 2015-09-17 | 2017-03-29 | 天津市广泽特种光源有限公司 | A kind of novel environment friendly waste gas purification quasi-molecule optoelectronic integration equipment |
| CN207822733U (en) * | 2017-11-30 | 2018-09-07 | 淄博市技师学院 | A kind of repair garage exhaust gas processing device |
| CN208194069U (en) * | 2018-03-01 | 2018-12-07 | 四川宜康环保科技有限公司 | A kind of novel UV photodissociation waste gas treatment equipment |
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| CN112933802A (en) * | 2021-02-09 | 2021-06-11 | 山西程氏汇通科技有限公司 | Moxa smoke purifier |
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Application publication date: 20200417 |