CN215648683U - Air purification device for livestock breeding - Google Patents
Air purification device for livestock breeding Download PDFInfo
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- CN215648683U CN215648683U CN202122214339.XU CN202122214339U CN215648683U CN 215648683 U CN215648683 U CN 215648683U CN 202122214339 U CN202122214339 U CN 202122214339U CN 215648683 U CN215648683 U CN 215648683U
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- 238000009395 breeding Methods 0.000 title claims abstract description 19
- 230000001488 breeding effect Effects 0.000 title claims abstract description 19
- 244000144972 livestock Species 0.000 title claims abstract description 19
- 238000004887 air purification Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 86
- 239000000428 dust Substances 0.000 claims abstract description 65
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 33
- 238000000746 purification Methods 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000005507 spraying Methods 0.000 claims abstract description 15
- 230000001502 supplementing effect Effects 0.000 claims abstract description 10
- 230000001954 sterilising effect Effects 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 4
- 239000011550 stock solution Substances 0.000 claims 3
- 239000000645 desinfectant Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 208000035473 Communicable disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model provides an air purification device for livestock breeding, which relates to the technical field of livestock breeding and comprises a purification box, wherein a dust removal mechanism is fixedly arranged on the inner wall of the purification box, electric shutters are fixedly arranged on the periphery of the purification box and correspond to the position of the dust removal mechanism, a disinfection box is fixedly arranged on the top surface of the dust removal mechanism, a group of ultraviolet sterilizing lamps is fixedly arranged on the inner top wall of the disinfection box, a liquid storage cavity is fixedly arranged between the opposite surfaces of the disinfection box and the purification box, ventilation holes communicated with the liquid storage cavity are fixedly arranged on the periphery of the disinfection box, a liquid spraying ring pipe is fixedly arranged on the outer wall of the disinfection box and corresponds to the position of the liquid storage cavity, spraying holes are uniformly distributed on the bottom surface of the liquid spraying ring pipe, a liquid supplementing pipe, a circulating pump and a liquid level sensor are fixedly arranged on the side surface of the purification box respectively, one end of the liquid level sensor extends to the inside of the liquid storage cavity, be used for solving and lack one kind in the current livestock-raising field and carry out the problem that edulcoration purifies and sterilization and disinfection equipment to the air.
Description
Technical Field
The utility model relates to the technical field of livestock raising, in particular to an air purification device for livestock raising.
Background
With the high sealing of the livestock breeding house, air pollution in the breeding house is increased, the phenomenon of high respiratory infectious diseases of livestock breeding is serious, air components in the breeding house and sprayed bacterium liquid and the like are changed, the diseases are prevented, and no suitable unprecedented purification device is available at present to meet the requirement of the livestock breeding on air quality.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air purification device for livestock breeding, which aims to solve the problems in the background technology.
The technical scheme of the utility model is realized as follows:
an air purification device for livestock breeding comprises a purification box, wherein a dust removal mechanism is fixedly arranged on the inner wall of the purification box, electric shutters are fixedly arranged on the periphery of the purification box and correspond to the position of the dust removal mechanism, a disinfection box is fixedly arranged on the top surface of the dust removal mechanism, a group of ultraviolet sterilization lamps are fixedly arranged on the inner top wall of the disinfection box, a liquid storage cavity is fixedly arranged between the opposite surfaces of the disinfection box and the purification box, ventilation holes communicated with the liquid storage cavity are fixedly formed in the periphery of the disinfection box, a liquid sprinkling ring pipe is fixedly arranged on the outer wall of the disinfection box and corresponds to the position of the liquid storage cavity, sprinkling holes are uniformly distributed on the bottom surface of the liquid sprinkling ring pipe, a liquid supplementing pipe, a circulating pump and a liquid level sensor are fixedly arranged on the side surface of the purification box respectively, one end of the liquid level sensor extends into the liquid storage cavity, one end of a liquid taking port of the circulating pump and one end of the liquid supplementing pipe are communicated with the liquid storage cavity, the one end of circulating pump liquid outlet is through returning the fixed intercommunication of liquid pipe and fluid infusion pipe, the fixed intercommunication in top of purifying box has the clean wind calandria with the liquid reserve chamber intercommunication, the inner wall of purifying box just corresponds the fixed position between disinfect box and the clean wind calandria and has axial fan.
Preferably, dust removal mechanism includes the framework, the week side and the purifying box fixed connection of framework, the top surface and the disinfect box fixed connection of framework, the bottom surface fixed mounting of framework has servo motor, the inside fixed mounting of framework has a set of filter dust module that is the rectangle array and distributes, the one end of servo motor output shaft is passed through the belt and is connected with a set of filter dust module transmission, the top fixed mounting of framework has the air pump, the one end fixed mounting of air pump gas outlet has the gas distribution pipe, the bottom surface of gas distribution pipe and the position that corresponds every filter dust module all fixed intercommunication have the dust removal spray tube, every the shower nozzle that two sets of symmetries set up is all installed to the week side of dust removal spray tube.
Preferably, the dirt filtering module includes an outer rotary cylinder and an inner filter cylinder, the peripheral side of the outer rotary cylinder is connected with the frame body in a rotating manner, the peripheral side of the inner filter cylinder is connected with the outer rotary cylinder in a rotating manner through a bearing, one end of the output shaft of the servo motor is connected with the outer rotary cylinder and the inner filter cylinder in a transmission manner through two belts respectively, the top end of the inner filter cylinder is communicated with the frame body in a rotating manner, a plurality of groups of dirt filtering micropores distributed in a circumferential array manner are arranged on the peripheral side of the inner filter cylinder, the air outlet direction of the sprayer is parallel to the axis of the dirt filtering micropores, the bottom fixedly connected with spiral brush piece of the outer rotary cylinder, and the inner wall of the spiral brush piece is attached to the inner filter cylinder.
Preferably, the inner filter cylinder and the dust cleaning spray pipe at the corresponding position are coaxially arranged, the inner filter cylinder is a hollow cylindrical structure with an open top end and a closed bottom end, and the axis of the inner filter cylinder is vertical to the horizontal line.
Preferably, the outlet water direction of the spraying hole is vertical downward, the liquid level sensor is arranged at the lower side of the ventilation hole, a drain pipe communicated with the liquid storage cavity is fixedly arranged on the side surface of the purifying box, and a first valve is fixedly arranged on the peripheral side surface of the drain pipe.
Preferably, the inside fixed mounting of liquid return pipe has one-way water valve, the week side fixed mounting of fluid infusion pipe has the second valve, the inside fixed intercommunication of net wind calandria has one-way blast gate, the terminal surface fixed mounting of purifying box has the singlechip.
Preferably, the inside of purifying box and the position of corresponding interior filter cylinder below sliding connection have connect the dirt steamer tray.
By adopting the technical scheme, the utility model has the beneficial effects that: according to the utility model, through the design of the dust filtering module and the dust removing mechanism, the device can efficiently complete air purification and air sterilization and disinfection operations in the livestock breeding process, during operation, the dust filtering module can effectively filter dust in the air, the disinfection box can perform ultraviolet sterilization on the dust after regulation, the liquid spraying annular pipe can perform secondary dust fall and spraying of a disinfectant on the primarily sterilized and filtered air through spraying of a disinfectant, and through the matching design of the dust filtering module and the dust removing spray pipe, on one hand, the probability that the outer wall of the inner filter cylinder is adhered with impurities and the dust filtering micropores are blocked can be effectively reduced, on the other hand, the dust filtering micropores can be efficiently and automatically cleaned through high-pressure airflow, so that the use cost and the maintenance difficulty of the device can be favorably reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1 according to the present invention;
FIG. 3 is a schematic structural view of the dust removing mechanism of the present invention;
FIG. 4 is a schematic structural diagram of a frame, a servo motor and a dust cleaning nozzle of the present invention;
FIG. 5 is a schematic cross-sectional view of a dust filter module according to the present invention;
fig. 6 is a schematic view of the enlarged structure of a portion of fig. 5 according to the present invention.
Wherein:
1-a purifying box; 2-a dust removal mechanism; 3-an electric shutter; 4-a disinfection box; 5-ultraviolet sterilizing lamp; 6-liquid storage cavity; 7-ventilation holes; 8-liquid pouring ring pipe; 9-a liquid supplementing pipe; 10-a circulating pump; 11-a liquid level sensor; 12-air purifying calandria; 13-an axial flow fan; 14-a frame body; 15-a servo motor; 16-a dust filtration module; 17-an air pump; 18-a gas-distributing pipe; 19-dust cleaning spray pipe; 20-outward rotary cylinder; 21-an inner filter cartridge; 22-spiral brush piece; 23-dust collecting drawer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-6, an air purification device for livestock breeding comprises a purification box 1, wherein a single chip microcomputer is fixedly mounted on the end face of the purification box 1, a display screen and a central control key are respectively arranged on the surface of the single chip microcomputer, the single chip microcomputer is used for controlling the working state of a relevant electric mechanism in the device, and the single chip microcomputer is STM8S003F3P6 in model number;
the inner wall of the purification box 1 is fixedly provided with a dust removal mechanism 2, the positions, corresponding to the dust removal mechanism 2, around the purification box 1 are fixedly provided with electric shutters 3, the electric shutters 3 are arranged to control whether the purification device is clean or not, when the purification device works, the electric shutters 3 are opened, and when the purification device does not work, the four electric shutters 3 seal the purification box 1;
a disinfection box 4 is fixedly arranged on the top surface of the dust removing mechanism 2, a group of ultraviolet sterilization lamps 5 is fixedly arranged on the inner top wall of the disinfection box 4, a liquid storage cavity 6 is fixedly arranged between the opposite surfaces of the disinfection box 4 and the purification box 1, ventilation holes 7 communicated with the liquid storage cavity 6 are fixedly arranged around the disinfection box 4, a liquid spraying ring pipe 8 is fixedly arranged on the outer wall of the disinfection box 4 and corresponds to the position of the liquid storage cavity 6, spraying holes are uniformly distributed on the bottom surface of the liquid spraying ring pipe 8, the water outlet direction of the spraying holes is vertical and downward, a liquid supplementing pipe 9, a circulating pump 10 and a liquid level sensor 11 are respectively and fixedly arranged on the side surface of the purification box 1, one end of the liquid level sensor 11 extends into the liquid storage cavity 6, the liquid level sensor 11 is arranged on the lower side of the ventilation holes 7, a sewage discharge pipe communicated with the liquid storage cavity 6 is also fixedly arranged on the side surface of the purification box 1, a first valve is fixedly arranged on the peripheral side surface of the sewage discharge pipe, the first valve is an electromagnetic valve, and when the drainage device is used, the drainage pipe is communicated with an external drainage pipe;
the liquid level sensor 11 is used for monitoring liquid level data inside the liquid storage cavity 6, the liquid level sensor 11 feeds monitored signals back to the single chip microcomputer, when the liquid level sensor 11 monitors that the liquid level height inside the liquid storage cavity 6 exceeds a threshold value, the single chip microcomputer controls a first valve at a drain pipe to be opened, then the liquid level inside the liquid storage cavity 6 is kept at a set height, the type of the liquid level sensor 11 is OPB350L125, and during working, purified sterile liquid inside the liquid storage cavity 6 is periodically replaced;
one end of a liquid taking port of the circulating pump 10 and one end of the liquid supplementing pipe 9 are both communicated with the liquid storage cavity 6, one end of a liquid outlet of the circulating pump 10 is fixedly communicated with the liquid supplementing pipe 9 through a liquid return pipe, a one-way water valve is fixedly installed inside the liquid return pipe, a second valve is fixedly installed on the peripheral side face of the liquid supplementing pipe 9, the one-way water valve is arranged to control the liquid return pipe to only discharge water outwards but not to feed water towards the direction of the circulating pump 10, a clean air exhaust pipe 12 communicated with the liquid storage cavity 6 is fixedly communicated with the top of the purifying box 1, a one-way air valve is fixedly communicated inside the clean air exhaust pipe 12 and is arranged to ensure that the clean air exhaust pipe 12 can only exhaust air outwards, an axial flow fan 13 is fixedly installed on the inner wall of the purifying box 1 and corresponds to the position between the sterilizing box 4 and the clean air exhaust pipe 12, and the axial flow fan 13 exhausts air towards one side of the clean air exhaust pipe 12 during work.
The dust filtering module 16 comprises an outer rotary drum 20 and an inner filter drum 21, the peripheral side surface of the outer rotary drum 20 is rotatably connected with the frame 14, the peripheral side surface of the inner filter drum 21 is rotatably connected with the outer rotary drum 20 through a bearing, the inner filter drum 21 is coaxially arranged with a dust cleaning spray pipe 19 at a corresponding position, the inner filter drum 21 is of a hollow cylindrical structure with an opening at the top end and a closed bottom end, the axis of the inner filter drum 21 is vertical to a horizontal line, a dust receiving drawer 23 is slidably connected in the inner part of the purifying box 1 and at a position corresponding to the lower part of the inner filter drum 21, one end of an output shaft of the servo motor 15 is respectively in transmission connection with the outer rotary drum 20 and the inner filter drum 21 through two belts, the top end of the inner filter drum 21 is rotatably communicated with the frame 14, a plurality of groups of dust filtering micropores distributed in a circumferential array are formed in the peripheral side surface of the inner filter drum 21, the aperture of the dust filtering micropores can be customized according to actual requirements, the air outlet direction of a nozzle is parallel to the axis of the dust filtering micropores, the bottom end of the outer rotary drum 20 is fixedly connected with a spiral brush piece 22, the inner wall of the spiral brush piece 22 is fixedly provided with soft bristles, and the inner wall of the spiral brush piece 22 is attached to the inner filter cylinder 21 through the soft bristles.
The working principle is as follows: when the device is used, the device is arranged at a preset working place, a set amount of dust reducing liquid is filled in the liquid storage cavity 6 before working, wherein disinfectant can be added in the dust reducing liquid, after the liquid filling pipe 9 finishes liquid filling, the second valve is closed, when the device works, four electric shutters 3 are unfolded with the maximum ventilation area, a servo motor 15 drives an outer rotary drum 20 and an inner filter drum 21 to rotate, an axial flow fan 13 exhausts air upwards, a circulating pump 10 works, after the inner filter drum 21 rotates, the windward side is changed circularly and impurities in the air are filtered, after the outer rotary drum 20 rotates, a spiral brush piece 22 is driven to rotate, the conveying direction of the spiral brush piece 22 is controlled by the output direction of the servo motor 15 to be downward, clean air filtered by the inner filter drum 21 is exhausted into a disinfection box 4 and is sterilized and disinfected by an ultraviolet sterilization lamp 5, the sterilized clean air is sprayed out from a liquid pouring ring pipe 8 in the liquid storage cavity 6 for secondary sterilization, the sterilized clean air is finally discharged through the clean air discharge pipe 12 under the action of the axial flow fan 13, when the internal filter cartridge 21 needs to be maintained, the air pump 17 and the servo motor 15 work synchronously, and the cleaned dust falls into the dust collection drawer 23.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides an air purification device for livestock-raising, includes purifying box (1), its characterized in that:
the dust removal device is characterized in that a dust removal mechanism (2) is fixedly mounted on the inner wall of the purification box (1), an electric shutter (3) is fixedly mounted on the periphery of the purification box (1) and corresponds to the position of the dust removal mechanism (2), a disinfection box (4) is fixedly mounted on the top surface of the dust removal mechanism (2), a set of ultraviolet sterilization lamps (5) is fixedly mounted on the inner top wall of the disinfection box (4), a liquid storage cavity (6) is fixedly arranged between the relative surfaces of the disinfection box (4) and the purification box (1), ventilation holes (7) communicated with the liquid storage cavity (6) are fixedly formed in the periphery of the disinfection box (4), a liquid spraying ring pipe (8) is fixedly mounted on the outer wall of the disinfection box (4) and corresponds to the position of the liquid storage cavity (6), spraying holes are uniformly distributed on the bottom surface of the liquid spraying ring pipe (8), and liquid supplementing pipes (9) are fixedly mounted on the side surfaces of the purification box (1) respectively, Circulating pump (10) and level sensor (11), the one end of level sensor (11) extends to stock solution chamber (6) inside, the one end of liquid inlet and the one end of fluid infusion pipe (9) are all communicated with stock solution chamber (6) in circulating pump (10), the one end of circulating pump (10) liquid outlet is through returning liquid pipe and fluid infusion pipe (9) fixed intercommunication, the fixed intercommunication in top of purifying box (1) has clean wind calandria (12) with stock solution chamber (6) intercommunication, the inner wall of purifying box (1) just corresponds disinfection box (4) and the position fixed mounting between clean wind calandria (12) has axial fan (13).
2. The air purification device for livestock breeding according to claim 1, wherein the dust removal mechanism (2) comprises a frame body (14), the peripheral side surface of the frame body (14) is fixedly connected with the purification box (1), the top surface of the frame body (14) is fixedly connected with the disinfection box (4), the bottom surface of the frame body (14) is fixedly provided with a servo motor (15), a group of dust filtration modules (16) distributed in a rectangular array is fixedly installed inside the frame body (14), one end of an output shaft of the servo motor (15) is in transmission connection with the group of dust filtration modules (16) through a belt, the top of the frame body (14) is fixedly provided with an air pump (17), one end of an air outlet of the air pump (17) is fixedly provided with an air distribution pipe (18), and a dust cleaning spray pipe (19) is fixedly communicated with the bottom surface of the air distribution pipe (18) and the position corresponding to each dust filtration module (16), and two groups of symmetrically arranged spray heads are arranged on the peripheral side surface of each dust cleaning spray pipe (19).
3. An air cleaning apparatus for livestock breeding according to claim 2, the dust filtering module (16) comprises an outer rotary cylinder (20) and an inner filter cylinder (21), the peripheral side surface of the external rotary cylinder (20) is rotationally connected with the frame body (14), the peripheral side surface of the internal filter cylinder (21) is rotationally connected with the external rotary cylinder (20) through a bearing, one end of an output shaft of the servo motor (15) is respectively in transmission connection with the outer rotary drum (20) and the inner filter drum (21) through two belts, the top end of the inner filter cylinder (21) is rotationally communicated with the frame body (14), a plurality of groups of dust filtration micropores distributed in a circumferential array are arranged on the circumferential side surface of the inner filter cylinder (21), the air outlet direction of the spray head is parallel to the axis of the dust filtration micropore, the bottom end of the outer rotary drum (20) is fixedly connected with a spiral brush piece (22), and the inner wall of the spiral brush piece (22) is attached to the inner filter drum (21).
4. The air purification device for livestock breeding according to claim 3, wherein the inner filter cylinder (21) is coaxially arranged with the dust cleaning nozzle (19) at the corresponding position, the inner filter cylinder (21) is a hollow cylindrical structure with an open top end and a closed bottom end, and the axis of the inner filter cylinder (21) is perpendicular to the horizontal line.
5. The air purification device for livestock breeding according to claim 1, wherein the water outlet direction of the spraying hole is vertically downward, the liquid level sensor (11) is arranged at the lower side of the ventilation hole (7), a drain pipe communicated with the liquid storage cavity (6) is fixedly arranged on the side surface of the purification box (1), and a first valve is fixedly arranged on the peripheral side surface of the drain pipe.
6. The air purification device for livestock breeding according to claim 1, wherein a one-way water valve is fixedly installed inside the liquid return pipe, a second valve is fixedly installed on the peripheral side surface of the liquid supplementing pipe (9), a one-way air valve is fixedly communicated inside the air purifying exhaust pipe (12), and a single chip microcomputer is fixedly installed on the end surface of the purification box (1).
7. An air cleaning device for livestock breeding according to claim 1, characterized in that a dust receiving drawer (23) is slidably connected to the inside of the cleaning box (1) and corresponding to the position below the inner filter cylinder (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122214339.XU CN215648683U (en) | 2021-09-14 | 2021-09-14 | Air purification device for livestock breeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122214339.XU CN215648683U (en) | 2021-09-14 | 2021-09-14 | Air purification device for livestock breeding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215648683U true CN215648683U (en) | 2022-01-28 |
Family
ID=79963106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122214339.XU Expired - Fee Related CN215648683U (en) | 2021-09-14 | 2021-09-14 | Air purification device for livestock breeding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215648683U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013924A (en) * | 2022-06-02 | 2022-09-06 | 李晖 | Air purifying method for preventing and treating environmental pollution |
| CN115143578A (en) * | 2022-06-02 | 2022-10-04 | 李晖 | Air purification device for environmental pollution prevention and control |
-
2021
- 2021-09-14 CN CN202122214339.XU patent/CN215648683U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013924A (en) * | 2022-06-02 | 2022-09-06 | 李晖 | Air purifying method for preventing and treating environmental pollution |
| CN115143578A (en) * | 2022-06-02 | 2022-10-04 | 李晖 | Air purification device for environmental pollution prevention and control |
| CN115143578B (en) * | 2022-06-02 | 2024-01-30 | 李晖 | Air purification device for preventing and treating environmental pollution |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220128 |