CN211513871U - Outdoor air purification device and environment cleaning device - Google Patents
Outdoor air purification device and environment cleaning device Download PDFInfo
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- CN211513871U CN211513871U CN201921424391.4U CN201921424391U CN211513871U CN 211513871 U CN211513871 U CN 211513871U CN 201921424391 U CN201921424391 U CN 201921424391U CN 211513871 U CN211513871 U CN 211513871U
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Abstract
The utility model provides an outdoor air purification device and environment cleaning device relates to the environment and administers technical field, has solved the problem that has not purified and clear up subaerial solid debris's device and technique to outdoor air among the prior art yet. Outdoor air purification device is including the acquisition unit, purification unit and emission unit, and the acquisition unit can gather outdoor contaminated air and subaerial solid debris, and send the air of gathering into purification unit, send solid debris into rubbish holding district, utilizes the inside purification medium air-purifying of purification unit, removes particulate matter and peculiar smell in the contaminated air, then utilizes the emission unit air escape after will purifying to all ring edge borders in, the utility model discloses according to the reciprocal operation of above-mentioned process circulation, give other people clean and tidy fresh air and the ground of having brought.
Description
Technical Field
The utility model belongs to the technical field of the environment treatment technique and specifically relates to an outdoor air purification device and environment cleaning device are related to.
Background
The natural environment condition is closely related to the quality of human life, particularly the haze phenomenon abused in recent years influences the normal life of people, and even brings various diseases to human beings. The poor atmospheric environment quality is caused by a plurality of factors, wherein the factors comprise haze industrial and mining enterprise emission and the like, the problem of poor atmospheric environment quality is difficult to achieve, and the strengthening and governing work is essential from the source, but the project is designed to be a long-time process and cannot be done by kicking, so that the problem of relieving the current air quality is urgent. Most of the current air purification is indoor air purification, and no device for purifying outdoor air exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an outdoor air purification device and environment cleaning device to solve and still not have the problem to the device that outdoor air purified among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides an outdoor air purification device, which comprises an acquisition unit, a purification unit and a discharge unit, wherein the inlet of the purification unit is communicated with the acquisition unit, the outlet of the purification unit is communicated with the discharge unit, the acquisition unit can acquire air and send the acquired air into the purification unit for purification, and the discharge unit can discharge the purified air;
wherein, the purification unit includes purification casing, purification medium and purification portion, the purification casing is sealed setting, purification medium set up in the purification casing, purification portion can with purification medium acts on and gathers into on the air in the purification unit, make air purification.
Optionally, the purifying part comprises a purifying pipeline, a medium power device and at least one spray head, the spray head is arranged at the tail end of the purifying pipeline, the front end of the purifying pipeline is arranged in the middle of the side wall of the purifying shell, the purifying medium is communicated to the spray head through the purifying pipeline, the medium power device is arranged in a passage of the purifying pipeline to provide power for spraying of the purifying medium from the spray head, and a filter screen is arranged in the purifying pipeline; the purification medium can be recycled, so that water resources are saved; and an anti-freezing and heat-insulating device is additionally arranged on the purification pipeline.
Optionally, the purification medium in the purification shell is water, the height of the purification medium is two thirds of the height of the inner cavity of the purification shell, and the spray head is arranged on the inner wall of the purification shell at the position where the spray head is not in contact with the purification medium.
Optionally, the purifying housing further comprises a suppression plate, the suppression plate is fixedly connected to the inner wall of the purifying housing and horizontally arranged below the liquid level of the purifying medium, and the collection unit can discharge the collected air towards the surface of the suppression plate.
Optionally, the collection unit includes a suction system, a collection pipeline, and at least one main collection portion, a first end of the collection pipeline is communicated with a position of the purification shell where no purification medium is present, a second end of the collection pipeline is communicated with at least one main collection portion, the suction system is connected to the collection pipeline for providing negative pressure, and the main collection portion is provided with a plurality of through holes for collecting air.
Optionally, the collection unit still includes that a plurality of wind receive with a plurality of vice collection portions, a plurality of vice collection portion set up in main collection portion go up with through-hole in the main collection portion is linked together, wind receives for the cavity casing, wind receive with vice collection portion communicates, just wind receives and goes up to have a plurality of collection holes.
Optionally, the discharge unit includes a discharge pipeline and a diversion cap, a first end of the discharge pipeline is located outside the purification shell, the first end of the discharge pipeline and the diversion cap are fixedly connected in a suspended manner through a connecting portion, and the diversion cap is located right above the first end of the discharge pipeline; the second end of the discharge pipeline is communicated with the purification shell at the contact part of the non-purification medium in the purification shell, and a filter screen is arranged in the discharge pipeline.
Optionally, the outdoor air purification device further comprises a vehicle, the outdoor air purification device is disposed on the vehicle, wherein the main collecting part is provided with a plurality of through holes.
Optionally, the collection unit further comprises a flexible duct suction portion, a first end of the flexible duct suction portion is communicated with the collection pipeline, and a second end of the flexible duct suction portion can be manually controlled to enter a relatively closed space, through which air is not easy to circulate, to suck air.
An environment cleaning device comprises a vehicle, a separated garbage containing area in a purifying shell and the outdoor air purifying device, wherein the outdoor air purifying device is arranged on the vehicle, the suction system comprises an isolation and shunt type gas and solid material separation suction and discharge conveyor, the isolation and shunt type gas and solid material separation suction and discharge conveyor comprises a suction port, a solid discharge port and a gas discharge port, the suction port is communicated with the second end of the collection pipeline, the solid discharge port is communicated with the garbage containing area, the gas discharge port is communicated with the purifying shell, and the collection unit can suck solid impurities on the ground and ambient air.
The utility model provides an outdoor air purification device and environment cleaning device, wherein the outdoor air purification device comprises an acquisition unit, a purification unit and a discharge unit, the inlet of the purification unit is communicated with the acquisition unit, the outlet of the purification unit is communicated with the discharge unit, the acquisition unit can acquire air and send the acquired air into the purification unit for purification, and the discharge unit can discharge the purified air; the purification unit comprises a purification shell, a purification medium and a purification part, wherein the purification shell is arranged in a sealing manner, the purification medium is arranged in the purification shell, and the purification part can act on the purification medium on the air collected into the purification unit; suction system among the environment cleaning device can feed the air into through automatic sorting device and purify the casing to simultaneously with solid debris feed rubbish holding district, guarantee the utility model discloses can also clear up subaerial solid debris in air-purifying, give people and brought fresh air and clean and tidy ground.
Drawings
FIG. 1 is a schematic structural view of an outdoor air purification apparatus;
FIG. 2 is a schematic view of the outdoor air purification apparatus on a vehicle;
fig. 3 is a schematic structural diagram of the environmental cleaning apparatus.
FIG. 1, a housing; 2. a purification medium; 3. a spray head; 4. a suppressor plate; 5. a suction system; 6. a collection pipeline; 7. a main acquisition part; 8. wind is received; 9. a secondary collection part; 10. a discharge line; 11. a flow guide cap; 12. A vehicle; 13. a waste holding area; 14. an isolated shunting type gas-solid material separation suction-discharge conveyor; 15. A suction port; 16. a solids discharge outlet; 17. a gas discharge port; 18. and (4) the ground.
Detailed Description
The utility model provides an outdoor air purification device, as shown in figure 1, comprising an acquisition unit, a purification unit and a discharge unit, wherein the inlet of the purification unit is communicated with the acquisition unit, the outlet of the purification unit is communicated with the discharge unit, the acquisition unit can acquire air and send the acquired air into the purification unit for purification, and the discharge unit can discharge the purified air;
wherein, purification unit is including purifying casing 1, purifying medium 2 and purification portion, and purification casing 1 is sealed to be set up, and purifying medium 2 sets up in purifying casing 1, and purification portion can be with on the air of purifying medium 2 acts on the collection and advances in the purification unit, makes air purification.
The utility model discloses a collection unit, purification unit and discharge element, collection unit can gather outdoor contaminated air to send the air of gathering into purification unit, utilize the inside 2 air-purifying media of purification unit, remove particulate matter and peculiar smell by among the contaminated air, then utilize the air-out after the discharge element will purify to all ring edge borders in, the utility model discloses according to the reciprocal operation of above-mentioned process circulation, continuously purify outdoor air.
As an optional implementation mode, the purification part comprises a purification pipeline, a medium power device and at least one spray head 3, the spray head 3 is arranged at the tail end of the purification pipeline, the front end of the purification pipeline is arranged in the middle of the side wall of the purification shell 1, the purification medium 2 is communicated to the spray head 3 through the purification pipeline, the medium power device is arranged in a passage of the purification pipeline to provide power for the purification medium 2 to be sprayed from the spray head 3, so that the purification medium 2 can be recycled, the purpose of saving water is achieved, a filter screen is arranged in the purification pipeline between the medium power device and the purification shell to prevent the spray head 3 from being blocked, and further, an anti-freezing and heat-preserving device is additionally arranged on the.
The utility model discloses purification portion includes the purification pipeline, medium power device and at least one shower nozzle 3, shower nozzle 3 sets up in the end of purification pipeline, the front end of purification pipeline sets up in the middle part of purifying the 1 lateral wall of casing, medium power device sets up in the route of purification pipeline, the other end of purification pipeline communicates purification medium 2, when medium power device moves, can spray purification medium 2 from shower nozzle 3 through the purification pipeline, the purification medium 2 who sprays can act on the air of sucking into the purification unit, filter this air, particulate matter and peculiar smell in the removal air; wherein, medium power device is the pump, and the flow of pump is adjustable.
As an alternative embodiment, the purifying medium 2 in the purifying housing 1 is water, and the height of the purifying medium 2 is two thirds of the height of the inner cavity of the purifying housing 1, and the spray head 3 is disposed on the inner wall of the purifying housing 1 where the purifying medium 2 is not in contact.
The utility model discloses purify purification medium 2 in the casing 1 and be water, water can be attached to objects such as the particulate matter in the air through the atomizing of shower nozzle 3 on, the weight of particulate matter in the increase air makes the particulate matter break away from the air and subsides in the bottom of the case of purifying casing 1 along with water to air-purifying and get rid of the peculiar smell, simultaneously, the air after through the aqueous cleaning can increase the moisture in the air, plays humid air's effect, makes people's breathing more comfortable.
As an optional embodiment, the purifying shell 1 further comprises a suppression plate 4, the suppression plate 4 is fixedly connected to the inner wall of the purifying shell 1 and horizontally arranged at a proper height below the liquid level of the purifying medium 2, and the collecting unit can spray the collected air towards the surface of the suppression plate 4 to form splash, so that the contact area of the air and the water is further increased, and the purifying effect of the air is increased;
further, the purifying shell 1 is provided with an upper cover which is easy to open and close; the side wall of the purifying shell 1 is also provided with a visible glass window, and the amount of the residual amount and the turbidity degree of the purifying medium 2 can be observed through the visible glass window.
As an optional implementation manner, the collection unit includes a suction system 5, a collection pipeline 6, and at least one main collection portion 7, a first end of the collection pipeline 6 is communicated with a place of the purification shell 1 where no purification medium exists, a second end of the collection pipeline 6 is communicated with the at least one main collection portion 7, and the suction system 5 is connected to the collection pipeline 6 and used for providing negative pressure to collect air through the main collection portion 7.
The utility model uses the negative pressure provided by the suction system 5 to suck the air from the main collection part 7 and send the air into the purification shell 1 for purification; wherein the suction system 5 comprises a fan.
As an optional implementation mode, the collecting unit further comprises a plurality of wind inlets 8 and a plurality of auxiliary collecting parts 9, the plurality of auxiliary collecting parts 9 are arranged on the main collecting part 7 and communicated with the through holes on the main collecting part 7, the wind inlets 8 are hollow shells, the wind inlets 8 are communicated with the auxiliary collecting parts 9, and the wind inlets 8 are provided with a plurality of collecting holes;
further, the discharge line 10 is suitably installed in a shallow underground area, such as a lawn, a roadside, etc., while the pumping system 5 is capable of providing sufficient dynamic pressure to ensure that the discharge line 10 can be installed remotely.
The collecting unit of the utility model also comprises a plurality of air inlets 8 and a plurality of auxiliary collecting parts 9, the plurality of auxiliary collecting parts 9 are arranged on the main collecting part 7 and communicated with the through holes on the main collecting part 7, and form a tree-shaped structure taking the main collecting part 7 as a main body and the auxiliary collecting parts 9 as branches, which is used for increasing the absorbing area of the air; wind receives 8 and is the cavity casing of shape such as circular or polygon, and wind receives 8 and vice collection portion 9 and is linked together, and wind receives and has a plurality of collection holes on 8, and every vice collection portion 9 sets up a plurality of winds and receives 8.
As an optional embodiment, the discharge unit comprises a discharge pipeline 10 and a diversion cap 11, a first end of the discharge pipeline 10 is located outside the purification shell 1, the first end of the discharge pipeline 10 and the diversion cap 11 are fixedly connected through a connecting part in a hanging manner, and the diversion cap 11 is located right above the first end of the discharge pipeline 10; the second end of the discharge pipeline 10 is communicated with the purifying shell 1 at the position of the non-purifying medium 2 in the purifying shell 1; the discharge pipeline 10 can be additionally provided with a plurality of branch pipe outlets so as to increase the discharge area of the purified air; further, install the filter screen panel in discharge line 10, can filter the residual particulate matter that is unpurified in the air, the design of furthest apart from the second end of collection unit and discharge line 10 makes the purification path extension of air do benefit to the purification of air.
As an alternative embodiment, as shown in fig. 2, the outdoor air purification device further includes a vehicle 12, and the outdoor air purification device is disposed on the vehicle 12, wherein the main collecting part is provided with a plurality of through holes.
The outdoor air purification device of the utility model also comprises a vehicle 12, the outdoor air purification device is arranged on the vehicle 12, the vehicle 12 can drive the purification device to move, and the whole body becomes a movable air purification device; wherein, main collection portion 7 is the hollow structure of rectangle and has seted up a plurality of through-holes on it, and the vehicle 12 of being convenient for is at the in-process along the way suction air of traveling, and at this moment, main collection portion 7 is apart from certain distance with the locomotive, the circulation of air of being convenient for.
As an optional implementation mode, the collection unit further comprises a soft catheter suction part, the first end of the soft catheter suction part is communicated with the collection pipeline, and the second end of the soft catheter suction part can be manually controlled to enter a relatively closed space where air is difficult to circulate to suck air.
The utility model discloses the collection unit still includes soft pipe suction portion, and soft pipe suction portion first end is linked together with collection pipeline 6, makes the negative pressure in the collection pipeline 6 can act on soft pipe suction portion, and then through the second end suction air of soft pipe suction portion, and soft pipe suction portion has the flexibility, and the second end of soft pipe suction portion can enter main collection portion 7 on the basis of manual control and can not reach or the difficult place that circulates of air carries out the suction of air; when the vehicle runs, the vehicle can suck flying dust, smoke dust discharged by industrial and mining enterprises, wind, sand, haze and the like in nature along the way, can realize real-time purification treatment, has no secondary pollution, is in streamlined operation, and has multiple purposes;
furthermore, a valve is arranged in a passage of the soft catheter suction part, and meanwhile, a valve is also arranged in a passage of the main acquisition part 7, and the two valves are mutually matched for use; further, in this embodiment, the purifying case 1 is provided with an upper cover which is easily opened and closed; the side wall of the purifying shell 1 is also provided with a visible glass window, and the amount of the residual amount and the turbidity degree of the purifying medium 2 can be observed through the visible glass window.
An environment cleaning device is shown in fig. 3, and comprises a vehicle 12, an independent garbage accommodating area 13 arranged in a purification shell 1 and the outdoor air purification device, wherein the outdoor air purification device is arranged on the vehicle 12, a suction system 5 comprises an isolation and shunt type gas and solid material separation suction and discharge conveyor 14, the isolation and shunt type gas and solid material separation suction and discharge conveyor 14 comprises a suction port 15, a solid discharge port 16 and a gas discharge port 17, the suction port 15 is communicated with the second end of a collection pipeline 6, the solid discharge port 16 is communicated with the garbage accommodating area 13, the gas discharge port 17 is communicated with the purification shell 1, and a collection unit can suck solid impurities and ambient air on the ground 18;
the isolated shunting type gas solid material separation suction and discharge conveyor 14 can enable the main collecting part 7 to generate negative pressure, suck surrounding air and solid impurities such as dust, leaves, paper shreds and the like on the ground 18, automatically sort the sucked solid impurities and the air, discharge the sucked solid impurities into the garbage containing area 13 through the solid object discharge port 16, input the sucked air into the purification shell 1 for purification, and avoid sprinkling during operation, smoke dust, improve road environment, and avoid dust flying to further deteriorate the air or wet and slippery road or even icing to generate potential safety hazards after sprinkling; wherein the model of the isolating and shunting type gas-solid material separating, sucking and discharging conveyor 14 is WFX (QG) type; further, in this embodiment, the purifying case 1 is provided with an upper cover which is easily opened and closed; the side wall of the purifying shell 1 is also provided with a visible glass window, and the amount of the residual amount and the turbidity degree of the purifying medium 2 can be observed through the visible glass window.
Further, as shown in fig. 3, the top of the garbage accommodating area 13 is disposed at a proper height below the liquid level of the purifying medium 2, so that the air discharged into the purifying housing 1 is sprayed to the top of the garbage accommodating area 13 to achieve the effect of splashing water;
preferably, at this time, the number of the main collecting parts 7 is at least 1, the main collecting parts 7 are positioned at the lower end of the tail part of the vehicle 12, the main collecting parts 7 have a lifting and descending function, the suction ports 15 of the main collecting parts 7 are suspended above the ground 18, the width of the suction ports 15 is not larger than that of the vehicle 12, and the suction ports 15 are small flat long rectangles, so that the suction area is maximized, and the working efficiency and the quality are improved; at this time, the discharge unit is preferably arranged at the foremost end of the top of the purifying shell, and the tail end of the discharge unit is preferably in a rectangular horn-shaped structure, so that air can be sufficiently diffused and discharged; the periphery of the purifying shell 1 is provided with the wind collecting plates which are hollow shells, the wind collecting surfaces of the wind collecting plates are rectangular, a plurality of through holes are formed in the wind collecting surfaces of the wind collecting plates and used for collecting air, the wind collecting plates are communicated with the collecting pipeline 6 through pipelines, the outdoor air purifying and environment cleaning synchronous completing function is achieved, and the all-vehicle multifunctional wind collecting device is multipurpose.
The vehicle 12 has body widths of 3m, 2.5m, 2m, 1.5m, 1m and 0.7m, and the narrower body can be designed into a manual hand-push type vehicle, and is suitable for alleys and courtyards.
The above description is only a part of the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and the present invention discloses the technical scope in which other people can easily change or copy, and all should be covered by the present invention.
Claims (10)
1. An outdoor air purification device, its characterized in that: the air purifier comprises a collecting unit, a purifying unit and a discharging unit, wherein an inlet of the purifying unit is communicated with the collecting unit, an outlet of the purifying unit is communicated with the discharging unit, the collecting unit can collect air and send the collected air into the purifying unit for purification, and the discharging unit can discharge the purified air;
wherein, the purification unit includes purification casing (1), purification medium (2) and purification portion, purification casing (1) is sealed to be set up, purification medium (2) set up in purification casing (1), purification portion can with purification medium (2) act on gather and advance on the air in the purification unit, make air purification.
2. An outdoor air cleaning apparatus according to claim 1, wherein: the purifying part comprises a purifying pipeline, a medium power device and at least one spray head (3), the spray head (3) is arranged at the tail end of the purifying pipeline, the front end of the purifying pipeline is arranged in the middle of the side wall of the purifying shell (1), the purifying medium (2) is communicated to the spray head (3) through the purifying pipeline, the medium power device is arranged in a passage of the purifying pipeline and provides power for the purifying medium (2) to be sprayed from the spray head (3), and a filter screen is arranged in the purifying pipeline.
3. An outdoor air cleaning apparatus according to claim 2, wherein: the purifying medium (2) in the purifying shell (1) is water, the height of the purifying medium (2) is two thirds of the height of the inner cavity of the purifying shell (1), and the spray head (3) is arranged on the inner wall of the purifying shell (1) at the position not contacted with the purifying medium (2).
4. An outdoor air cleaning apparatus according to claim 3, wherein: the purifying shell (1) further comprises a suppression plate (4), the suppression plate (4) is fixedly connected to the inner wall of the purifying shell (1) and horizontally arranged below the liquid level of the purifying medium (2), and the collecting unit can discharge collected air towards the surface of the suppression plate (4).
5. An outdoor air cleaning apparatus according to claim 4, wherein: the collection unit comprises a suction system (5), a collection pipeline (6) and at least one main collection part (7), wherein the first end of the collection pipeline (6) is communicated with the purification shell (1), the second end of the collection pipeline (6) is communicated with at least one main collection part (7), the suction system (5) is connected to the collection pipeline (6) and used for providing negative pressure, and a through hole is formed in the main collection part (7) and used for collecting air.
6. An outdoor air cleaning apparatus according to claim 5, wherein: the collection unit still includes that a plurality of wind receives (8) and a plurality of vice collection portion (9), and is a plurality of vice collection portion (9) set up in on main collection portion (7) with through-hole on the main collection portion (7) is linked together, wind receives (8) and is the cavity casing, wind receive (8) with vice collection portion (9) are linked together, just wind receives and has a plurality of collection holes on (8).
7. An outdoor air cleaning apparatus according to claim 6, wherein: the discharge unit comprises a discharge pipeline (10) and a diversion cap (11), the first end of the discharge pipeline (10) is positioned outside the purification shell (1), the first end of the discharge pipeline (10) is fixedly connected with the diversion cap (11) in a hanging mode through a connecting part, and the diversion cap (11) is positioned right above the first end of the discharge pipeline (10); the second end of the discharge pipeline (10) is communicated with the purification shell (1) at the position of the non-purification medium (2) in the purification shell (1), and a filter screen is arranged in the discharge pipeline (10).
8. An outdoor air cleaning apparatus according to claim 5, wherein: outdoor air purification device still includes vehicle (12), outdoor air purification device set up in on vehicle (12), wherein, a plurality of through-holes have been seted up on main collection portion (7).
9. An outdoor air cleaning apparatus according to claim 8, wherein: the collection unit further comprises a soft catheter suction part, the first end of the soft catheter suction part is communicated with the collection pipeline (6), and the second end of the soft catheter suction part can be manually controlled to enter a relatively closed space where air is difficult to circulate for sucking air.
10. An environmental cleaning apparatus, characterized by: the outdoor air purification device comprises a vehicle (12), a separate garbage containing area (13) in a purification shell (1) and an outdoor air purification device according to claim 5, wherein the outdoor air purification device is arranged on the vehicle (12), the suction system (5) comprises an isolation and shunt type gas-solid material separation suction-discharge conveyor (14), the isolation and shunt type gas-solid material separation suction-discharge conveyor (14) comprises a suction port (15), a solid discharge port (16) and a gas discharge port (17), the suction port (15) is communicated with the second end of the collection pipeline (6), the solid discharge port (16) is communicated with the garbage containing area (13), the gas discharge port (17) is communicated with the purification shell (1), and the collection unit can suck solid impurities on the ground (18) and ambient air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921424391.4U CN211513871U (en) | 2019-08-29 | 2019-08-29 | Outdoor air purification device and environment cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921424391.4U CN211513871U (en) | 2019-08-29 | 2019-08-29 | Outdoor air purification device and environment cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211513871U true CN211513871U (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921424391.4U Expired - Fee Related CN211513871U (en) | 2019-08-29 | 2019-08-29 | Outdoor air purification device and environment cleaning device |
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| Country | Link |
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| CN (1) | CN211513871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110755964A (en) * | 2019-08-29 | 2020-02-07 | 杨守珍 | An outdoor air purification device and an environmental cleaning device |
-
2019
- 2019-08-29 CN CN201921424391.4U patent/CN211513871U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110755964A (en) * | 2019-08-29 | 2020-02-07 | 杨守珍 | An outdoor air purification device and an environmental cleaning device |
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Granted publication date: 20200918 |
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| CF01 | Termination of patent right due to non-payment of annual fee |