CN112387033A - Road removes haze dust fall system - Google Patents
Road removes haze dust fall system Download PDFInfo
- Publication number
- CN112387033A CN112387033A CN201910762465.3A CN201910762465A CN112387033A CN 112387033 A CN112387033 A CN 112387033A CN 201910762465 A CN201910762465 A CN 201910762465A CN 112387033 A CN112387033 A CN 112387033A
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- China
- Prior art keywords
- spray head
- equipment installation
- installation cabinet
- water
- road
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- 239000007921 spray Substances 0.000 claims abstract description 96
- 238000009434 installation Methods 0.000 claims abstract description 47
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000001629 suppression Effects 0.000 abstract 2
- 238000001514 detection method Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H3/00—Applying liquids to roads or like surfaces, e.g. for dust control; Stationary flushing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/08—Means for controlling the separation process
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Nozzles (AREA)
Abstract
A road haze-removing and dust-reducing system belongs to the field of environmental protection and comprises an equipment installation cabinet, a water treatment device, a water tank, a control system, a high-pressure pump set, an electromagnetic valve, a spray head rod and a spray head; the equipment installation cabinet is arranged in a roadside flower bed or a green belt, is a hollow cavity body and is fixed on an installation base; the water treatment device is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; the water tank is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; the haze dust suppression device has the characteristic of being capable of achieving the haze dust suppression function over the road.
Description
Technical Field
The invention belongs to the field of environmental protection, and particularly relates to a road haze-removing and dust-reducing system.
Background
With the development of industrialization, air pollution becomes more and more serious, from large dust particles of PM10 to micro particles of PM2.5, the air pollution becomes more and more serious, and the pollution of the road and the accessory area becomes more and more serious in addition to the rapid increase of the number of automobiles; therefore, people want to control and prevent the pollution by various methods, so that the oil quality of the fuel oil vehicle is improved from the source, the pollutant emission is reduced through ternary catalysis, and the new energy vehicle is popularized; however, people can only adopt passive defense for the high fuel vehicle storage and the pollution to the environment; for example, water is sprinkled on the road surface, and water mist is sprayed over the road to reduce the dust content over the road; the existing pavement sprinkling has the function of reducing dust, but only can reduce the dust on the pavement; the existing water spray vehicle for the road overhead is mainly provided with a water spray pump, and the existing water spray vehicle for the road overhead is provided with a water spray pump, so that water spray is blown away to the road overhead by wind power.
Disclosure of Invention
Aiming at the problems existing in the existing road haze-removing and dust-reducing process, the invention provides a road haze-removing and dust-reducing system, which is characterized in that: the device comprises an equipment installation cabinet, a water treatment device, a water tank, a control system, a high-pressure pump set, an electromagnetic valve, a spray head rod and a spray head; the equipment installation cabinet is arranged in a roadside flower bed or a green belt, is a hollow cavity body and is fixed on an installation base; the water treatment device is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; the water tank is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; is connected with the water outlet of the water treatment device through a pipeline; the control system is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; the high-pressure pump set is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; the electromagnetic valve is arranged on the high-pressure water pipe at the lower part of the spray head rod and can cut off or communicate with the single spray head high-pressure water pipe; the spray head rod is arranged on the edge of the road and fixed on the foundation; the spray head is arranged at the top end of the spray head rod and is fixedly connected with the upper part of the spray head rod, and the water inlet of the spray head is connected with the water outlet of the high-pressure pump set through the high-pressure water pipe and the electromagnetic valve.
Furthermore, the water treatment device comprises a filtering device and an anti-scaling device, wherein the filtering device is arranged in the equipment installation cabinet, a water inlet of the filtering device is connected with a municipal water source, and a water outlet of the filtering device is connected with a water inlet of the anti-scaling device; the anti-scaling device is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet, a water inlet of the anti-scaling device is connected with a water outlet of the filtering device, and a water outlet of the anti-scaling device is connected with a water inlet of the water tank through a pipeline.
Furthermore, the filtering device comprises a sand filtering device and an ultrafiltration membrane filter.
Furthermore, the anti-scaling device is a metal catalyst anti-scaling device.
Furthermore, a water level sensor is arranged in the water tank.
Furthermore, the control system comprises a control box, a mains supply switch, a main controller, a sensor, an electromagnetic valve, a display and operation screen and a remote control interface; the control box is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; a mains supply switch is arranged in a control box, one end of the mains supply switch is connected with a mains supply, and the other end of the mains supply switch is connected with a main controller; the main controller is arranged in the control box and is fixedly connected with the control box; the main controller is a PLC controller; the sensor comprises a pressure sensor, a water level sensor and a haze detection sensor; the pressure sensor is arranged on a high-pressure water pipe pipeline near the water inlet of the spray head and can detect the water pressure in the high-pressure water pipe; the water level sensor is arranged on the water tank and can detect the water level in the water tank; the haze detection sensor is a haze detection device, is arranged at the top of the spray head rod, and can detect the haze concentration in the area; the electromagnetic valves are respectively arranged at the water inlet of the water treatment device and the water inlet of the water tank and can open and close the water inlet of the water treatment device and the water inlet of the water tank; the display and operation screen is arranged on the control box door and fixedly connected with the control box door, and a circuit of the display and operation screen is connected with the main controller, so that the control program of the main controller can be edited, the working parameters of the main controller can be set, and the working state of the main controller can be displayed; the remote control interface is arranged in the control box, is connected with the main controller and can realize communication and remote control with a remote control center.
Furthermore, the high-pressure pump group has more than one, the output pressure is more than 1MPa, and the flow rate is more than 2 liters per second.
Furthermore, the spray head is a mixed spray head and comprises a connecting part, a spray head body, a jet flow nozzle and an atomizing nozzle; the connecting part is arranged at the lower part of the spray head body and is connected with a high-pressure water pipe connecting seat at the upper end of the spray head rod; the spray head body is a polygonal combined cavity body, the lower part of the spray head body is hermetically connected with the connecting part, the inner cavity of the spray head body is communicated with the inner cavity of the connecting part, and the upper part of the spray head body is provided with a spray nozzle mounting seat which is communicated with the inner cavity of the spray head body; the jet flow nozzles are arranged on the upper peripheral nozzle mounting base and are provided with a plurality of jet flow nozzles, and the axial lead of each jet flow nozzle forms an included angle with the geometric center line of the spray head body; the included angle is preferably 45-60 degrees; the number of the jet nozzles is more than three, and the jet nozzles are uniformly distributed around the geometric axial lead of the nozzle body; the atomizing nozzle is arranged at the top of the spray head body, and the direction of a water spray outlet of the atomizing nozzle is the same as the direction of the geometric axis of the spray head body.
Furthermore, the number of the spray head rods is more than 4, preferably 10, and the spray head rods are uniformly distributed on the side of the road at intervals of 30-50 meters.
Advantageous effects
The invention has the advantages of realizing the haze and dust removing function above the road, having long duration, long spraying distance, high height and good haze and dust removing effect, realizing automatic control and remote control and generating no secondary pollution.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention
1. The device comprises an equipment installation cabinet, 2. a water treatment device, 3. a water tank, 4. a control system, 5. a high-pressure pump set, 6. an electromagnetic valve, 7. a spray head rod and 8. a spray head.
FIG. 2 is a schematic view of the structure of the spray head stem and the spray head
7. Spray head rod, 8 spray head.
FIG. 3 is a schematic view of a showerhead structure
81. Connecting part, 82 spray head body, 83 jet nozzle, 84 atomizing nozzle.
Detailed Description
For further explaining the technical scheme of the invention by way of example, the specific embodiment of the invention is explained by referring to the drawings, as shown in fig. 1-3, in this example, the jet nozzles commonly used in the industry are selected as the jet nozzles 83, in this example, 6 jet nozzles are selected, uniformly distributed on the periphery of the upper part of the nozzle body 82, have an inclination angle of 45 degrees with the horizontal plane, the nozzle body 82 is set to be a copper-cast hollow body, the lower half part is spherical, the upper half part is polyhedral, in this example, 6 inclined planes are selected, 6 jet nozzle mounting seats are arranged, the top surface is a plane and is provided with an atomizing nozzle mounting seat, and the top surface is parallel; an atomizing nozzle which is commonly used in the industry is selected as the atomizing nozzle 84 and is arranged on the top surface of the spray head body 82; the connecting part 81 is selected to be a columnar structure with internal threads and is integrally cast and molded with the spray head body 82, so that the implementation of the spray head 8 is completed; in the embodiment, a conical rod-shaped metal pipe with a mounting base is used as the spray head rod 7, a high-pressure water pipe connecting seat is arranged at the top of the spray head rod, the lower part of the high-pressure water pipe connecting seat is connected with the high-pressure water pipe, and the upper part of the high-pressure water pipe connecting seat is provided with an external thread which is screwed with a connecting part 81 on the spray head 8; a high-pressure water pipe through hole is formed in the lower portion of the spray head rod 7, the high-pressure water pipe penetrates through the inner space of the spray head rod 7 and is led out from the high-pressure water pipe through hole in the lower portion, and the high-pressure water pipe is connected with a water outlet pipe of the high-pressure pump set 5 after passing through the electromagnetic valve 6; in the embodiment, the height of the spray head rod 7 is more than 10 meters, so that the spray head is favorable for the diffusion of spray mist, and the 'rainy' feeling can not be caused to passers-by or vehicles; in this example, 10 spray head rods 7 are selected, and each spray head 8 is mounted on each spray head rod 7, so that the implementation of the spray head 8 and the spray head rods 7 is completed.
The control box is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet 1; the main controller is arranged in the control box and is fixedly connected with the control box; selecting the main controller as a PLC controller; the pressure sensor is arranged on a high-pressure water pipe pipeline near the water inlet of the spray head, and can detect the water pressure in the high-pressure water pipe; the water level sensor is arranged on the water tank 3, so that the water level in the water tank 3 can be detected; the haze detection sensor is selected as a haze detection device, is arranged at the top of the spray head rod 7 and can detect the haze concentration in the area; the electromagnetic valve 6 is respectively arranged at the middle part of the high-pressure water pipe corresponding to each spray head rod 7, the water inlet of the water treatment device and the water inlet of the water tank, and the high-pressure water pipe corresponding to each spray head rod 7, the water inlet of the water treatment device 2 and the water inlet of the water tank 3 can be opened and closed; the display and operation screen is arranged on the door of the control box and is fixedly connected with the door of the control box, and the circuit of the display and operation screen is connected with the main controller, so that the control program of the main controller can be edited, the working parameters of the main controller can be set, and the working state of the main controller can be displayed; the remote control interface is arranged in the control box, is connected with the main controller and can realize communication and remote control with a remote control center; the main controller is connected with the sensor, the electromagnetic valve 6, the display and operation screen, the high-voltage pump set, the commercial power supply and the remote control interface through wires, and the control system 4 is implemented.
The equipment installation cabinet 1 is installed in a roadside flower bed or a green belt, is a metal cavity body and is fixed on an installation base; the water treatment device 2 is arranged in the equipment installation cabinet 1 and is fixedly connected with the equipment installation cabinet 1, a water inlet of the water treatment device is connected with a municipal water source, and a water outlet of the water treatment device is connected with the water tank 3; the water tank 3 is arranged in the equipment installation cabinet 1 and is fixedly connected with the equipment installation cabinet 1, and a water inlet of the water tank 3 is connected with a water outlet of the water treatment device 2 through a pipeline; the control system 4 is installed in the equipment installation cabinet 1 and is fixedly connected with the equipment installation cabinet 1; the high-pressure pump group 5 is arranged in the equipment installation cabinet 1 and is fixedly connected with the equipment installation cabinet 1; thus, the present invention has been completed.
When the device is applied, according to the detection result data of the haze detection sensor, the main controller compares the data with preset haze parameters, when the preset parameters are exceeded, the main controller instructs the high-pressure pump set 5 to start, the electromagnetic valve 6 arranged on the high-pressure water pipe is opened, high-pressure water generated by the high-pressure pump set 5 enters the spray head 8 through the high-pressure water pipe, and then water mist is sprayed to the inside of the spray head 8 through the jet nozzle 83 and the atomizing nozzle 84 (little knowledge: the jet nozzle means that high-pressure water flow entering the spray nozzle is rectified and sprayed out through the spray holes with the larger length-diameter ratio, the length-diameter ratio is generally more than 3, the characteristics are that the spraying distance is far and the water flow speed is high, the atomizing nozzle means that high-pressure water flow entering the spray nozzle swirls and is sprayed out through the spray holes with the smaller length-diameter ratio, the, obvious atomization), when the water spraying time reaches the time set in the main controller, the main controller instructs the high-pressure pump set 5 to stop working, and a working cycle is completed.
When water is sprayed at intervals, the main controller instructs partial electromagnetic valves 6 to be opened, partial electromagnetic valves 6 to be closed, partial spray heads 8 are sprayed with water, and partial spray heads are not sprayed with water, so that water sources can be saved and reasonable utilization can be realized.
When the remote control is needed, the remote control interface of the invention is communicated with a remote central control center through remote wireless communication, and the central control center takes over the control system 4 of the invention for remote control.
Claims (4)
1. The utility model provides a road removes haze dust fall system which characterized in that: the device comprises an equipment installation cabinet, a water treatment device, a water tank, a control system, a high-pressure pump set, an electromagnetic valve, a spray head rod and a spray head; the equipment installation cabinet is arranged in a roadside flower bed or a green belt, is a hollow cavity body and is fixed on an installation base; the water treatment device is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; the water tank is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; is connected with the water outlet of the water treatment device through a pipeline; the control system is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; the high-pressure pump set is arranged in the equipment installation cabinet and is fixedly connected with the equipment installation cabinet; the electromagnetic valve is arranged on the high-pressure water pipe at the lower part of the spray head rod and can cut off or communicate with the single spray head high-pressure water pipe; the spray head rod is arranged on the edge of the road and fixed on the foundation; the spray head is arranged at the top end of the spray head rod and is fixedly connected with the upper part of the spray head rod, and the water inlet of the spray head is connected with the water outlet of the high-pressure pump set through the high-pressure water pipe and the electromagnetic valve.
2. The road haze and dust removal system according to claim 1, characterized in that: the high-pressure pump set has more than one, the output pressure is more than 1MPa, and the flow rate is more than 2 liters per second.
3. The road haze and dust removal system according to claim 1, characterized in that: the spray head is a mixed spray head and comprises a connecting part, a spray head body, a jet flow nozzle and an atomizing nozzle; the connecting part is arranged at the lower part of the spray head body and is connected with a high-pressure water pipe connecting seat at the upper end of the spray head rod; the spray head body is a polygonal combined cavity body, the lower part of the spray head body is hermetically connected with the connecting part, the inner cavity of the spray head body is communicated with the inner cavity of the connecting part, and the upper part of the spray head body is provided with a spray nozzle mounting seat which is communicated with the inner cavity of the spray head body; the jet flow nozzles are arranged on the upper peripheral nozzle mounting base and are provided with a plurality of jet flow nozzles, and the axial lead of each jet flow nozzle forms an included angle with the geometric center line of the spray head body; the included angle is preferably 45-60 degrees; the number of the jet nozzles is more than three, and the jet nozzles are uniformly distributed around the geometric axial lead of the nozzle body; the atomizing nozzle is arranged at the top of the spray head body, and the direction of a water spray outlet of the atomizing nozzle is the same as the direction of the geometric axis of the spray head body.
4. The road haze and dust removal system according to claim 1, characterized in that: the number of the spray head rods is more than 4, preferably 10, and the spray head rods are uniformly distributed on the side of the road at intervals of 30-50 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762465.3A CN112387033A (en) | 2019-08-19 | 2019-08-19 | Road removes haze dust fall system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910762465.3A CN112387033A (en) | 2019-08-19 | 2019-08-19 | Road removes haze dust fall system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112387033A true CN112387033A (en) | 2021-02-23 |
Family
ID=74603231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910762465.3A Pending CN112387033A (en) | 2019-08-19 | 2019-08-19 | Road removes haze dust fall system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112387033A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368759A (en) * | 2019-08-22 | 2019-10-25 | 郑州荔枝环保科技有限公司 | A kind of spray head |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201815408U (en) * | 2010-10-22 | 2011-05-04 | 合肥辰泰安全设备有限责任公司 | Atomizing spray head of rotary jet flow |
| CN109173516A (en) * | 2018-11-29 | 2019-01-11 | 河南安可达节能环保建筑材料有限公司 | Intelligently remove haze dust falling system in high-altitude |
| CN208991057U (en) * | 2018-07-10 | 2019-06-18 | 河北蓝海风科技有限公司 | More spray head integrated atomization terminals |
| CN110368759A (en) * | 2019-08-22 | 2019-10-25 | 郑州荔枝环保科技有限公司 | A kind of spray head |
| CN210613206U (en) * | 2019-08-19 | 2020-05-26 | 郑州荔枝环保科技有限公司 | Road removes haze dust fall system |
-
2019
- 2019-08-19 CN CN201910762465.3A patent/CN112387033A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201815408U (en) * | 2010-10-22 | 2011-05-04 | 合肥辰泰安全设备有限责任公司 | Atomizing spray head of rotary jet flow |
| CN208991057U (en) * | 2018-07-10 | 2019-06-18 | 河北蓝海风科技有限公司 | More spray head integrated atomization terminals |
| CN109173516A (en) * | 2018-11-29 | 2019-01-11 | 河南安可达节能环保建筑材料有限公司 | Intelligently remove haze dust falling system in high-altitude |
| CN210613206U (en) * | 2019-08-19 | 2020-05-26 | 郑州荔枝环保科技有限公司 | Road removes haze dust fall system |
| CN110368759A (en) * | 2019-08-22 | 2019-10-25 | 郑州荔枝环保科技有限公司 | A kind of spray head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368759A (en) * | 2019-08-22 | 2019-10-25 | 郑州荔枝环保科技有限公司 | A kind of spray head |
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