CN112934902B - Methane emission treatment device for ruminant - Google Patents
Methane emission treatment device for ruminant Download PDFInfo
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- CN112934902B CN112934902B CN202110119807.7A CN202110119807A CN112934902B CN 112934902 B CN112934902 B CN 112934902B CN 202110119807 A CN202110119807 A CN 202110119807A CN 112934902 B CN112934902 B CN 112934902B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/12—Bioreactors or fermenters specially adapted for specific uses for producing fuels or solvents
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/14—Pressurized fluid
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Bioinformatics & Cheminformatics (AREA)
- Organic Chemistry (AREA)
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- Genetics & Genomics (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a methane emission treatment device for ruminants, which comprises two symmetrically arranged fixed plates, wherein one side wall, far away from each other, of each fixed plate is fixedly connected with a working shaft, each working shaft is rotationally connected with a rotating ring, the inner walls of each rotating ring are respectively provided with an annular groove, limiting rings are rotationally connected in the two annular grooves, the two limiting rings are respectively and fixedly connected with the two working shafts, the two working shafts are respectively and fixedly connected with fixed columns, each rotating ring is fixedly connected with a swinging column, and one side wall, close to each other, of each fixed column and one side wall, close to each other, of each swinging column are respectively and fixedly connected with a fixed plate. The invention can effectively prevent methane generated in ruminant bodies from being directly discharged into the atmosphere, can effectively treat the methane, and greatly ensures the safety of the atmosphere.
Description
Technical Field
The invention relates to the technical field of air pollution, in particular to a methane emission treatment device for ruminants.
Background
In modern society, greenhouse effect is a serious environmental problem, and the main reason of greenhouse effect is the emission of various greenhouse gases, wherein methane is a kind of greenhouse gas which is very difficult to treat, and the methane is not consumed by plants like carbon dioxide and the like, and is difficult to treat once emitted into the atmosphere.
The emission of methane in the current society comes from various industries, wherein the methane emitted by various agricultural activities occupies a certain proportion, and the methane emitted by the livestock breeding industry occupies a great proportion, because ruminants such as cattle in livestock breeding can generate a great amount of methane gas in the rumen of the ruminants, the methane gas is mainly emitted to the outside along with the hiccups of the animals and the like, and the animal in livestock breeding cannot conveniently collect and treat the emitted methane due to the fact that the animal needs to frequently go to the field, so that a great amount of methane is emitted to the atmosphere to intensify the greenhouse effect.
To this end, we propose a methane emission treatment device for ruminants to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a methane emission treatment device for ruminants.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a methane emission processing apparatus of ruminant, includes two fixed disks that are the symmetry setting, two equal fixedly connected with operating axle on the lateral wall that the fixed disk kept away from each other, two all rotate on the operating axle and be connected with the swivel becket, two all be equipped with the ring channel on the inner wall of swivel becket, two all rotate in the ring channel and be connected with the spacing ring, two spacing ring respectively fixed connection set up on two operating axles, two equal fixedly connected with fixed column on the operating axle, two equal fixedly connected with swing post on the swivel becket, two on the lateral wall that a lateral wall that the fixed column is close to each other and two swing posts are close to each other equal fixedly connected with fixed plate, four the fixed plate is all kept away from two fixed disk settings, four all be equipped with the adhesion layer on the lateral wall that the fixed plate is close to each other and on the lateral wall that two fixed disk are close to each other, two the fixed column is kept away from the one end of two fixed disks all is equipped with getter device.
Preferably, the suction device includes that fixed connection keeps away from the workstation on the fixed disk one end at the fixed column, be equipped with the working chamber in the workstation, the working chamber is kept away from and is connected with the axis of rotation on one side inner wall of fixed column, fixedly connected with suction fan leaf in the axis of rotation, be equipped with a plurality of suction holes on one lateral wall that the fixed column was kept away from to the working chamber, a plurality of suction holes all are L shape setting, the fixed column is close to being equipped with the working tank on one lateral wall of workstation, the working tank is kept away from and is rotated on one side inner wall of workstation and be connected with the rotation post, fixedly connected with pulley on the rotation post, the winding has the stay cord on the pulley, the one end that the pulley was kept away from to the stay cord runs through fixed column fixed connection and sets up on corresponding swing post, the winding has torsion spring on the rotation post, torsion spring's one end fixed connection sets up on the inner wall of working tank, the rotation axis is close to one end of rotation post runs through the workstation setting, the rotation axis sets up through one-way device on one lateral wall that the workstation is kept away from the workstation, the rotation groove is kept away from on one lateral wall of workstation, one lateral wall that the workstation is kept away from by the swing tank, be equipped with the junction box and is kept away from in the junction box and is equipped with the junction box, the junction box is kept away from in the junction box.
Preferably, the unidirectional device comprises a plurality of sliding grooves arranged on a rotating shaft, the sliding grooves are arranged in a central symmetry manner, a plurality of clamping blocks are connected in the sliding grooves in a sliding manner and are arranged in a trapezoid manner, the clamping blocks are connected with the inner walls of the sliding grooves through a plurality of clamping springs respectively, a rotating groove is formed in one side wall of the rotating column, which is close to the rotating shaft, the rotating shaft is rotationally connected in the rotating groove, a plurality of clamping grooves which are arranged in a central symmetry manner are formed in the inner walls of the rotating groove, and the clamping blocks are respectively clamped in the clamping grooves.
Preferably, the two fixing plates are connected through two elastic ropes, and the two elastic ropes are symmetrically arranged.
Preferably, one ends of the two swing columns far away from the two fixed discs are fixedly connected with elastic seats together.
Preferably, the communicating hole is arranged far away from the fixed column, and one end of the connecting pipe, which is close to the treatment box, is arranged close to the fixed column.
Compared with the prior art, the invention has the beneficial effects that:
the invention can be effectively fixed on the animal body surface through devices such as the adhesive layer and the like, then the animal can take indoor and outdoor activities, the animal is powered by the movements of the upper jaw and the lower jaw during chewing, the animal is sucked into the treatment box through devices such as the stay rope, the rotating column, the rotating shaft, the air suction fan blade and the like, methane is converted into methanol by virtue of the conversion layer made of a culture medium material containing methane oxidizing bacteria, and the methanol is collected, so that a large amount of methane is prevented from being discharged into the outside air, the condition that the greenhouse effect is aggravated due to the methane is avoided, and the environmental safety is greatly ensured.
Drawings
FIG. 1 is a front cross-sectional view of a methane emission treatment device for ruminants in accordance with the present invention;
FIG. 2 is an enlarged view of the structure A of FIG. 1;
FIG. 3 is a cross-sectional view illustrating a top view of a methane emission treatment device for ruminants according to the present invention;
FIG. 4 is a side view showing a cross-sectional structure of a rotary column part of a methane emission treatment device for ruminants according to the present invention;
fig. 5 is a schematic top view of a collection box of a methane emission treatment device for ruminants according to the present invention.
In the figure: the device comprises a fixed disc 1, a working shaft 2, a rotating ring 3, a fixed column 4, a swinging column 5, a fixed plate 6, an adhesive layer 7, an annular groove 8, a limiting ring 9, a working table 10, a working cavity 11, a rotating shaft 12, a suction fan blade 13, a suction hole 14, a working groove 15, a rotating column 16, a pulley 17, a pull rope 18, a torsion spring 19, a processing box 20, a conversion layer 21, a collecting box 22, a connecting pipe 23, a sliding groove 24, a clamping block 25, a clamping spring 26, a rotating groove 27, a clamping groove 28, a communication hole 29, an elastic rope 30 and an elastic seat 31.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 4, a methane emission treatment device for ruminants comprises two symmetrically arranged fixing plates 1, wherein the two fixing plates 1 are connected through two elastic ropes 30, the two elastic ropes 30 are symmetrically arranged, the two elastic ropes 30 are matched with each other to effectively bind the two fixing plates 1 on the head of the animal, so that the device can be more stably fixed on the head of the animal, the stability of the device is greatly ensured, a side wall of the two fixing plates 1, which are far away from each other, is fixedly connected with a working shaft 2, the two working shafts 2 are rotatably connected with rotating rings 3, annular grooves 8 are formed in the inner walls of the two rotating rings 3, limiting rings 9 are rotatably connected in the two annular grooves 8, the two limiting rings 9 are respectively fixedly connected with fixing columns 4 on the two working shafts 2, the two rotating rings 3 are fixedly connected with swinging columns 5, one ends of the two swinging columns 5, which are far away from the two fixed discs 1, are fixedly connected with elastic seats 31 together, the elastic seats 31 enable the two swinging columns 5 to be more stably fixed at the lower jaw of an animal, so that when the animal chews by opening the mouth, the swinging columns 5 can more stably swing along with the lower jaw of the animal, then pulling work is completed, one side wall, which is close to the two fixed columns 4, of the two swinging columns 5 is fixedly connected with fixed plates 6, the four fixed plates 6 are far away from the two fixed discs 1, one side wall, which is close to the four fixed plates 6, of the two fixed discs 1 is provided with adhesive layers 7, and a user can adhere the device to the mouth position of the animal by means of the adhesive layers 7, so that the animal moves along with the device, thus, when the animal has hiccups and other conditions at different indoor and outdoor positions to discharge methane, the device can smoothly complete the treatment work;
the two fixing columns 4 are provided with a suction device at one end far away from the two fixing plates 1, the suction device comprises a workbench 10 fixedly connected to one end of the fixing column 4 far away from the fixing plates 1, a working cavity 11 is arranged in the workbench 10, a rotating shaft 12 is rotatably connected to the inner wall of one side of the working cavity 11 far away from the fixing columns 4, a suction fan blade 13 is fixedly connected to the rotating shaft 12, a plurality of suction holes 14 are arranged on one side wall of the working cavity 11 far away from the fixing columns 4, the plurality of suction holes 14 are all L-shaped, the plurality of suction holes 14 are arranged, so that when the suction fan blade 13 rotates, other air discharged from the nose of an animal above and air discharged from the mouth of the animal below can be smoothly sucked into the working cavity 11 through the suction holes 14 and then treated, methane discharged from the mouth and nose of the animal can be efficiently sucked into a designated position for treatment, the condition that methane is scattered in the surrounding air is greatly avoided, the safety of the atmosphere is greatly ensured, the aggravation of the atmospheric pollution is avoided, a working groove 15 is arranged on one side wall of the fixed column 4 close to the workbench 10, the inner wall of one side of the working groove 15 far away from the workbench 10 is rotationally connected with a rotating column 16, a pulley 17 is fixedly connected with the rotating column 16, a pull rope 18 is wound on the pulley 17, one end of the pull rope 18 is fixedly connected with the pulley 17, one end of the pull rope 18 far away from the pulley 17 penetrates through the fixed column 4 and is fixedly connected with the corresponding swinging column 5, thus when the swinging column 5 rotates along with the jaw of an animal, the pull rope 18 can be pulled to drive the pulley 17 to rotate, the rotating column 16 is driven to rotate, a torsion spring 19 is wound on the rotating column 16, one end of the torsion spring 19 is fixedly connected with the rotating column 16, one end of the torsion spring 19 far away from the rotating column 16 is fixedly connected to the inner wall of the working groove 15, the torsion spring 19 can reset the rotating column 16 which rotates to a designated position under the action of the pull rope 18 to an initial state by means of self elasticity, and then the device can be repeatedly used for a plurality of times, so that the device can carry out repeated and common air suction work along with repeated chewing activities of animals, and the long-term smooth methane treatment work is greatly ensured;
one end of the rotating shaft 12, which is close to the rotating column 16, penetrates through the workbench 10, the rotating shaft 12 is arranged on the rotating column 16 through a one-way device, the one-way device comprises a plurality of sliding grooves 24 which are arranged on the rotating shaft 12, the sliding grooves 24 are arranged in a central symmetry manner, clamping blocks 25 are connected in the sliding grooves 24 in a sliding manner, the clamping blocks 25 are arranged in a trapezoid manner, the clamping blocks 25 are respectively connected with the inner walls of the sliding grooves 24 through clamping springs 26, a rotating groove 27 is arranged on one side wall of the rotating column 16, which is close to the rotating shaft 12, the rotating shaft 12 is rotatably connected in the rotating groove 27, a plurality of clamping grooves 28 which are arranged in a central symmetry manner are arranged on the inner wall of the rotating groove 27, the clamping blocks 25 are respectively clamped in the clamping grooves 28, the trapezoid arrangement of the clamping blocks 25 in the one-way device enables the rotating column 16 to drive the clamping blocks 25 during normal rotation, the rotating shaft 12 and the air suction fan blades 13 are smoothly driven to rotate forward, so that the air suction fan blades 13 smoothly complete the air suction work in the direction of the air suction holes 14, the arrangement can ensure that the rotating column 16 can push the clamping blocks 25 to extrude the clamping springs 26 by means of the inclined planes of the clamping blocks 25 to further retract into the sliding grooves 24 when rotating reversely, the rotating column 16 can not drive the rotating shaft 12 and the air suction fan blades 13 to rotate reversely, the phenomenon that the air suction fan blades 13 reversely rotate to blow out other air in the working cavity 11 to the outside is greatly avoided, the smooth methane treatment work is greatly ensured, the treatment box 20 is fixedly connected to one side wall of the fixed column 4 far away from the swinging column 5, the conversion layer 21 is arranged in the treatment box 20, the conversion layer 21 is made of a culture medium material containing methane oxidizing bacteria which is special bacteria capable of converting methane into methanol, the conversion layer 21 that sets up like this can effectually absorb the methane that the animal discharged to the production methanol is to wait to use, be equipped with intercommunicating pore 29 on the lateral wall of treatment case 20 near work chamber 11, intercommunicating pore 29 runs through treatment case 20 setting, fixedly connected with collection box 22 on the lateral wall that fixed plate 6 was kept away from to fixed column 4, link to each other through connecting pipe 23 between collection box 22 and the treatment case 20, the both ends of connecting pipe 23 are the intercommunication setting with treatment case 20 and collection box 22 respectively, intercommunicating pore 29 keeps away from fixed column 4 setting, the one end of connecting pipe 23 near treatment case 20 is close to fixed column 4 setting, so set up and make the methanol that produces can follow connecting pipe 23 entering collection box 22 under the action of gravity, and can not flow into in the intercommunicating pore 29 of top, then enter into work chamber 11 in, very big guarantee the smooth going on of treatment work.
In the invention, a user firstly places two fixing plates 1 and corresponding fixing columns 4 and swinging columns 5 on two sides of the mouth of an animal, adheres the fixing plates 1 to a designated position by means of an adhesion layer 7 on the fixing plates 1, then respectively fixes the fixing columns 4 and the swinging columns 5 on the upper jaw and the lower jaw of the animal by means of the fixing plates 6 and the corresponding adhesion layer 7, simultaneously further fixes the fixing plates 1, the fixing columns 4 and the swinging columns 5 by means of elastic ropes 30 and elastic seats 31, the ruminant can always spit stomach food and then continue to chew repeatedly, the ruminant can keep a chewing state for a long time, the upper jaw and the lower jaw of the animal can rotate relatively in the chewing process, so that the swinging columns 5 are driven to rotate away from the fixing columns 4 in the rotating process of the lower jaw due to the chewing opening, the swinging columns 5 can pull a pull rope 18 in the rotating process, the pulley 17 is driven to rotate by the pull rope 18 in the pulling process, the pulley 17 drives the rotating column 16 to rotate, then the rotating shaft 12 is driven to rotate by the clamping grooves 28 and the clamping blocks 25, the rotating shaft 12 drives the air suction fan blades 13 to rotate in the rotating process, then the air suction fan blades 13 rotate and suck air in the direction of the air suction holes 14, thus the air discharged from the upper nose and the air discharged from the lower mouth can be pumped into the working cavity 11 through the plurality of air suction holes 14 and then extruded into the treatment box 20 through the communication holes 29, as the conversion layer 21 in the treatment box 20 is made of the culture medium material containing methane oxidizing bacteria, methane can be effectively absorbed and oxidized into methanol, and then the oxidized methanol can be discharged into the collection box 22 through the connecting pipes 23 to wait for the user to perform centralized and unified treatment, therefore, methane discharged from the mouth and nose of the animal can be effectively prevented from being scattered into the air, and can be collected for treatment, so that the safety of the atmosphere is greatly guaranteed, meanwhile, the device moves along with the animal, the animal can not be interfered to walk outdoors for eating, and the use of a user is greatly facilitated.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a methane emission processing apparatus of ruminant, includes two fixed disks (1) that are the symmetry setting, its characterized in that, two all fixedly connected with staff (2) on the lateral wall that fixed disk (1) kept away from each other, two all rotate on staff (2) and be connected with rotor ring (3), two all be equipped with ring channel (8) on the inner wall of rotor ring (3), two all rotate in ring channel (8) and be connected with spacing ring (9), two spacing ring (9) are fixed connection respectively and are set up on two staff (2), two all fixedly connected with fixed column (4) on staff (2), two all fixedly connected with swing post (5) on rotor ring (3), two all fixedly connected with fixed plate (6) on a lateral wall that fixed column (4) are close to each other and two swing post (5) are close to each other, four fixed plate (6) all keep away from two fixed disk (1) setting, four one side wall (1) that fixed plate (1) are close to each other and two fixed plate (7) are equipped with on two side wall that are close to each other;
the air suction device comprises a workbench (10) fixedly connected to one end of a fixed column (4) far away from a fixed disc (1), a working cavity (11) is arranged in the workbench (10), a rotating shaft (12) is rotatably connected to the inner wall of one side of the working cavity (11) far away from the fixed column (4), an air suction fan blade (13) is fixedly connected to the rotating shaft (12), a plurality of air suction holes (14) are arranged on one side wall of the working cavity (11) far away from the fixed column (4), the plurality of air suction holes (14) are all L-shaped, a working groove (15) is arranged on one side wall of the fixed column (4) close to the workbench (10), a rotating column (16) is rotatably connected to the inner wall of one side of the working groove (15) far away from the workbench (10), a pulley (17) is fixedly connected to the rotating column (16), a pull rope (18) is wound on the pulley (17), one end of the pull rope (18) is fixedly connected to the corresponding rotating column (16) and the rotating spring (19) is fixedly connected to the rotating column (16) in a penetrating manner, the one end fixed connection that rotation post (16) was kept away from to torsion spring (19) sets up on the inner wall of working tank (15), the one end that rotation post (16) was close to axis of rotation (12) runs through workstation (10) and sets up, axis of rotation (12) are through the setting of one-way device on rotation post (16), fixedly connected with treatment box (20) on the lateral wall that swinging post (5) were kept away from to fixed column (4), be equipped with conversion layer (21) in treatment box (20), conversion layer (21) are made for the medium material that contains methane-oxidizing bacteria, be equipped with communication hole (29) on the lateral wall that treatment box (20) were close to in working chamber (11), communication hole (29) run through treatment box (20) and set up, fixedly connected with collection box (22) on the lateral wall that fixed plate (6) was kept away from to fixed column (4), link to each other through connecting pipe (23) between collection box (22) and treatment box (20), both ends of connecting pipe (23) are the intercommunication with treatment box (20) and collection box (22) respectively.
2. The methane emission treatment device for ruminants according to claim 1, wherein the unidirectional device comprises a plurality of sliding grooves (24) arranged on the rotating shaft (12), the sliding grooves (24) are arranged in a central symmetry manner, clamping blocks (25) are slidably connected in the sliding grooves (24), the clamping blocks (25) are arranged in a trapezoid manner, the clamping blocks (25) are respectively connected with the inner walls of the sliding grooves (24) through a plurality of clamping springs (26), a rotating groove (27) is formed in one side wall, close to the rotating shaft (12), of the rotating column (16), the rotating shaft (12) is rotatably connected in the rotating groove (27), a plurality of clamping grooves (28) which are arranged in a central symmetry manner are formed in the inner walls of the rotating groove (27), and the clamping blocks (25) are respectively clamped in the clamping grooves (28).
3. A methane emission treatment device for ruminants, according to claim 1, characterized in that the two fixed discs (1) are connected by two elastic ropes (30), the two elastic ropes (30) being arranged symmetrically to each other.
4. A methane emission treatment device for ruminants according to claim 1, characterized in that the ends of the two swinging columns (5) remote from the two fixed discs (1) are fixedly connected with an elastic seat (31) together.
5. A methane emission treatment device for ruminants, according to claim 1, characterized in that the communication hole (29) is provided far from the fixed column (4), and the end of the connection pipe (23) close to the treatment box (20) is provided close to the fixed column (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110119807.7A CN112934902B (en) | 2021-01-28 | 2021-01-28 | Methane emission treatment device for ruminant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110119807.7A CN112934902B (en) | 2021-01-28 | 2021-01-28 | Methane emission treatment device for ruminant |
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| CN112934902A CN112934902A (en) | 2021-06-11 |
| CN112934902B true CN112934902B (en) | 2023-09-22 |
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| EP3315965A1 (en) * | 2016-10-27 | 2018-05-02 | Agrial | Device for measuring the amounts of gases ejected when an animal belches |
| JP2018161079A (en) * | 2017-03-24 | 2018-10-18 | パナソニックＩｐマネジメント株式会社 | Livestock barn |
| CN111618064A (en) * | 2020-06-28 | 2020-09-04 | 向阳 | Machine capable of quickly removing odor in trousers after flatus |
| CN111906091A (en) * | 2020-09-13 | 2020-11-10 | 向阳 | Device capable of eliminating flatus odor during flatus |
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