Road purification device

Abstract

The invention discloses a road purification device which comprises a road surface cleaning device and an air purification device, the road surface cleaning device comprises a spray head, the air purification device comprises a water tank and a fan, a plurality of ultrasonic nebulizers are arranged in the water tank, each ultrasonic nebulizer comprises an atomizing piece, and water in the water tank can immerse the atomizing pieces. The atomization piece vibrates to enable water to be atomized and gathered on the water surface and above the water surface, and the distance between the top face of the atomization piece and the water surface is 1-6 cm; a mist outlet is formed in the water tank, and the fan can accelerate atomized water so as to discharge the atomized water out of the water tank from the mist outlet. The road purification device can be fixedly installed on the two sides of a road or between two roads to achieve road surface flushing, meanwhile, air purification can be achieved, and the road purification device is good in dust falling effect, convenient to arrange, low in cost and small in traffic pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of road and air purification, and in particular to a road purification device. Background Art

[0002] In recent years, with the development of social economy and production, air quality problems have become increasingly prominent. Automobile exhaust and dust generated by vehicles during driving are important sources of air pollution. At present, there are various types of equipment with dust reduction functions, among which sprinklers, fog cannons, and street lamps equipped with fog cannons are the most widely used. Fog cannons have better water-saving effects than sprinklers and better dust reduction effects than sprinklers. However, the particle size of the water mist produced by fog cannons is mostly 100-600 microns, while automobile exhaust and dust are mostly PM2.5-PM10 particles that can be inhaled by the human body. Therefore, the dust adsorption effect of the water mist produced by fog cannons is poor, and at least 50% of the water droplets cannot be effectively used and directly fall on the ground, causing the ground to be slippery. This is because according to aerodynamic theory, when the dust-laden airflow bypasses the droplets, the dust particles will deviate from the circling gas due to inertia and collide with the droplets and be captured. The probability of being captured is related to the diameter of the droplets. When the diameter of the droplets is similar to that of the dust particles, the droplets are more likely to capture dust. Studies have shown that the dust collection effect is best when the ratio of the droplet diameter to the dust particle diameter is within the range of 1.25-5. Since the water mist particle size of the fog cannon is mostly between 100-600 microns, it can only capture PM20 or even larger particles. It is not ideal for capturing PM2.5-PM10 particles that can be inhaled into the human body and reducing dust. In addition, the height of the water mist formed by the fog cannon is much higher than the source of automobile exhaust and the height of the dust generated by the vehicle during driving, making its actual dust reduction effect negligible. At the same time, the fog cannon needs to move continuously to achieve a larger range of air purification, which is not only expensive but also causes traffic pressure. The existing cleaning of urban internal roads, national highways, and highways mostly uses a flushing truck to flush the garbage to the roadside while moving, and then the garbage on the roadside is collected by a garbage sweeper. The cost of the flushing truck is high, plus the cost of workers, so the cost of maintaining the cleanliness of the road is huge, and it also increases traffic pressure.

[0003] When ultrasonic waves propagate in liquids, under the combined effects of mechanical effects, thermal effects, and acoustic cavitation effects, a large number of pores will appear inside the liquid, and at the same time, the intermolecular forces will be destroyed, causing the liquid to disperse and achieving water atomization. Ultrasonic atomization of water can produce 0.5-20 micron water mist, which is much more effective than fog cannons in capturing and reducing dust for PM2.5-PM10 particles that can be inhaled into the human body. Part of the fine mist droplets below 20 microns will evaporate rapidly in the air, causing the relative humidity of the air in the locally enclosed dust-catching space to quickly become saturated. The saturated water vapor condenses with dust particles as nuclei to form "rain" and falls down, which is particularly effective in suppressing submicron ultra-fine dust. However, the outdoor air purification and dust reduction device is different from the air purifier. It faces the open atmosphere. Therefore, directly applying the air purifier to the atmosphere has extremely limited dust reduction effects and is extremely costly. Summary of the invention

[0004] The purpose of the present invention is to provide a road purification device, which can be fixedly installed on both sides of a road or between two roads to achieve road surface washing, while also achieving air purification, and has good dust reduction effect, convenient installation, low cost, and low traffic pressure.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A road purification device comprises a road surface cleaning device and an air purification device, wherein the road surface cleaning device comprises a nozzle, and the air purification device comprises a water tank and a fan. A plurality of ultrasonic atomizers are arranged in the water tank, and the ultrasonic atomizers comprise atomizing sheets. The water in the water tank can immerse the atomizing sheets, and the atomizing sheets vibrate to atomize the water and gather on the water surface and above the water surface. The distance between the top surface of the atomizing sheets and the water surface is 1 cm-6 cm. A mist outlet is provided on the water tank, and the fan can accelerate the atomized water to discharge it out of the water tank from the mist outlet.

[0007] Preferably, it also includes a mounting seat, and the road surface cleaning device and the air purification device are both arranged on the mounting seat, and the distance between the top surface of the atomizing sheet and the water surface is 2cm-5cm.

[0008] Preferably, the nozzles include at least one or a group of left-facing nozzles and / or at least one or a group of right-facing nozzles; or the nozzles are connected to a rotating mechanism, and the rotation of the rotating mechanism drives the nozzles to rotate; the nozzles are connected to a water pump via a pipeline.

[0009] Preferably, the ultrasonic atomizer is connected to the water tank, and the ultrasonic atomizer is arranged in several rows, and the heights of the ultrasonic atomizers in each row are substantially the same.

[0010] Preferably, the rotating mechanism includes a hollow motor, the output shaft of the hollow motor is connected to the nozzle via a hollow connecting rod, the rotation of the hollow motor drives the connecting rod to rotate and then drives the nozzle to rotate around the output shaft of the hollow motor, the pipeline is connected to the nozzle via the output shaft of the hollow motor and the connecting rod, and the nozzle is arranged on the front and / or rear side of the water tank.

[0011] Preferably, the hollow motor is arranged vertically, the end of the output shaft of the hollow motor is blocked, the connecting rod is connected to the output shaft of the hollow motor, and the connecting rod forms an angle of 0-10° with the horizontal line.

[0012] Preferably, a hollow floating adjustment chamber is also provided in the water tank, and the floating adjustment chamber is floated or suspended in the water of the water tank. The ultrasonic atomizer is mounted on the floating adjustment chamber, and the floating adjustment chamber is filled with liquid, foam or solid filler. The distance between the top surface of the atomizer sheet and the water surface is adjusted by adjusting the liquid content, foam content or solid filler in the floating adjustment chamber.

[0013] Preferably, a water injection port or a filling port is provided on the floating adjustment chamber, each ultrasonic atomizer is mounted on at least two floating adjustment chambers, a recess is provided on the floating adjustment chamber, the ultrasonic atomizer is mounted in the recess of the floating adjustment chamber, and the cross-section of the floating adjustment chamber is basically rectangular, semicircular, semi-elliptical or fan-shaped.

[0014] Preferably, the distance between the top surface of the atomizing sheet and the water surface is 3 cm-4.5 cm, and the mist outlets are evenly arranged on the top surface and / or the side surface of the water tank.

[0015] Further preferably, the water tank has a rectangular cross-section, the mounting seat has a plurality of legs, the ultrasonic atomizer has a height of 0.7m-1.3m, the water tank has a width of 0.3m-1m, the nozzle has a height of 0.1m-0.4m, and a liquid level sensor is provided in the water tank.

[0016] In the above technical scheme, the device is fixedly installed on both sides of the road or in the middle of two roads by setting a mounting seat, instead of the previous mobile cleaning and mobile dust reduction. By setting a road cleaning device, the water column sprayed by the nozzle is used to flush the road garbage, and the garbage on the road is concentrated on the roadside. In this way, the garbage sweeper can only collect the garbage on the roadside, which can reduce traffic pressure. The rotation of the rotating mechanism drives the nozzle to rotate, so that a nozzle can flush the garbage on both sides of the road; or the nozzle is at least one or a group of left-facing nozzles and / or at least one or a group of right-facing nozzles to flush the garbage on both sides of the road. By setting multiple ultrasonic atomizers in the water tank and the water in the water tank submerging the ultrasonic atomizer, the atomizer plate vibrates to atomize the water to form a large amount of fine mist below 20 microns and gather on the water surface and above the water surface. The water mist formed on the water surface and above the water surface is discharged at high speed under the action of the fan to form a high-concentration water mist, thereby achieving a dust reduction effect. The distance between the top surface of the atomizer and the water surface is maintained between 3cm-4.5cm. The atomizer maintains efficient atomization to form more fine mist. By adjusting the vibration frequency of the ultrasonic atomizer, the water mist particle size is adjusted to produce droplets that are easier to capture dust according to the air quality, further improving the dust reduction and purification effects, while saving more water. The height of the ultrasonic atomizer is 0.7m-1.3m, and the height of the water mist is close to the height of the dust generated by the vehicle during driving. It is more targeted and has a better dust reduction effect. The width of the water tank is 0.3m-1m, which is suitable for placement on both sides of the road or in the middle of a two-way national highway or expressway, saving a lot of labor and mobile vehicle modification costs, and low operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the road purification device (part of the water tank is omitted);

[0018] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the road cleaning device viewed from above;

[0019] Figure 3 This is a schematic diagram of the top view of the structure in which the atomizer is installed on the first type of floating adjustment chamber;

[0020] Figure 4 This is a schematic diagram of the main structure of the atomizer installed on the first type of floating adjustment chamber;

[0021] Figure 5 This is a schematic diagram of the main structure of the atomizer installed on the second type of floating adjustment chamber;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the second floating adjustment cavity. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings:

[0024] like Figures 1 to 6 As shown, the road purification device is fixedly installed on both sides of national roads, expressways, etc. or in the middle of two roads. It includes a mounting base 1, on which a road cleaning device and an air purification device are arranged. The road cleaning device includes a nozzle 21, and the air purification device includes a water tank 31 and a fan 32. A plurality of ultrasonic atomizers are arranged in the water tank 31. The ultrasonic atomizer includes an atomizing sheet 33. The water in the water tank can immerse the atomizing sheet 33, so that the atomizing sheet 33 vibrates to atomize the water and gather on the water surface and above the water surface. The distance between the top surface of the atomizing sheet 33 and the water surface is 1cm-6c m, preferably 2cm-5cm, more preferably 3cm-4.5cm, because the oscillation energy generated by the atomizer sheet will propagate in the water in a direction perpendicular to the surface of the atomizer sheet. Under the condition of appropriate water depth, the water surface on the energy propagation axis will concentrate on a water column, and a large number of tiny tension waves will occur at the front end of the water column, which will greatly reduce the surface tension of the raised water surface. The water surface is split into many tiny areas by the wavelength of the surface tension wave, and each area becomes a microparticle independently as if it is not bonded to each other, and is emitted in the air to form a fog effect. After a large number of tests, it is found that when the distance between the top surface of the atomizer sheet and the water surface is 3cm-4.5cm, the atomizer sheet can maintain efficient atomization and form more fine fog, which is conducive to further improving the purification and dust reduction effects. Mist outlets 34 are evenly opened on the top surface and / or side of the water tank, and the fan 32 (which can be either an exhaust fan or an induced draft fan) accelerates the atomized water to discharge from the water tank through the mist outlet, and the mist outlet can also release the atomized water into the outside atmosphere in a concentrated manner, ensuring the concentration of the water mist discharged into the air, avoiding a large amount of evaporation and loss in a short period of time due to too low a concentration of water mist, and achieving rapid saturation of the relative humidity of the local air. The saturated water vapor condenses with dust particles as nuclei to achieve the dust reduction effect. In this way, the water column sprayed by the nozzle 21 sweeps the garbage on the road surface, concentrates the garbage on the road surface to the roadside, and achieves road surface flushing. At the same time, the atomizing sheet 33 vibrates to make the water atomized and gather on the water surface and above the water surface. The fan 32 accelerates the release of the atomized water into the outside atmosphere, achieving purification and dust reduction above the road surface. The garbage sweeper can then be used to collect the garbage on the roadside in a concentrated manner, replacing the previous mobile cleaning and mobile dust reduction, and alleviating traffic pressure.

[0025] In a preferred embodiment, the nozzle 21 is connected to a rotating mechanism, and the rotation of the rotating mechanism drives the nozzle to rotate, so that a nozzle can flush the ground in a larger range. The nozzle 21 is connected to a water pump (not shown in the drawings) through a pipeline (not shown in the drawings), and the water pumped out by the water pump is sprayed to the ground through the nozzle through the pipeline. The rotating mechanism includes a hollow motor 22, and the output shaft 23 of the hollow motor is connected to the nozzle 21 through a hollow connecting rod 24, so that the hollow motor 22 rotates to drive the connecting rod 24 to rotate and then drive the nozzle 21 to rotate around the output shaft 23 of the hollow motor. The pipeline is connected to the nozzle 21 through the output shaft 23 and the connecting rod 24 of the hollow motor by a rotating connector. The rotating connector has been widely used in the connection between the rotating movable part and the fixed part, and will not be repeated here. The end of the output shaft 23 of the hollow motor is blocked, and the connecting rod is connected to the output shaft 23 of the hollow motor to ensure that most of the water passing through the output shaft 23 of the hollow motor can be sprayed out from the nozzle. The hollow motor is arranged vertically, and the connecting rod is at an angle of 0-10° with the horizontal line, so that the nozzle rotates and sprays a nearly conical cleaning surface driven by the hollow motor, which has a better cleaning effect on the ground and a larger flushing range. The nozzle is arranged on the front and / or rear side of the water tank, and garbage flushing on both sides of the road can be achieved with one nozzle, the flushing cost is lower, and the nozzle height is 0.1m-0.4m, which has no effect on the driver's line of sight; or the nozzle includes at least one or a group of left-facing nozzles and / or at least one or a group of right-facing nozzles, the left-facing nozzle flushes the road on the left side of the mounting seat, and the right-facing nozzle flushes the road on the right side of the mounting seat, thereby achieving road flushing on both sides of the road; the flushing distance is long, the force is strong, and the effect is good. A liquid level sensor is also arranged in the water tank. When the liquid level sensor detects that the water level in the water tank is low, the water tank is replenished with water through the first water pump (not shown in the accompanying drawings).

[0026] In a preferred embodiment, the ultrasonic atomizer is directly connected to the side wall and / or the bottom wall of the water tank, and the ultrasonic atomizer is arranged in several rows, and the height of each row of ultrasonic atomizers is basically the same, with a simple structure and high firmness. Or the ultrasonic atomizer is arranged in a floating manner in the water tank; when the ultrasonic atomizer is arranged in a floating manner in the water tank, a hollow floating adjustment chamber 4 is also provided in the water tank 31, and the floating adjustment chamber 4 is floated or suspended in the water of the water tank. The ultrasonic atomizer is mounted on the floating adjustment chamber 4, so that the atomizer sheet 33 is suspended in the water. The floating adjustment chamber 4 is filled with liquid or foam or solid filler. The distance between the top surface of the atomizer sheet 33 and the water surface is adjusted by adjusting the liquid content or foam content or solid filler in the floating adjustment chamber, so that the buoyancy of the atomizer sheet together with the floating adjustment chamber and its own gravity reach a specific dynamic balance, so that the atomizer sheet can be adaptively adjusted according to the water level change, so that the distance between the top surface of the atomizer sheet and the water surface is always maintained between 3cm-4.5cm, the atomizer sheet is always suspended in the water and continuously and efficiently produces fine mist, and the floating adjustment chamber adjusts the position of the atomizer sheet with a simple structure and low cost. Furthermore, a water injection port 41 or a filling port is provided on the side wall or the top surface of the floating adjustment chamber 4, each ultrasonic atomizer is evenly mounted on at least two floating adjustment chambers 4, a recessed portion 42 is provided on the floating adjustment chamber, the ultrasonic atomizer is fixed and mounted on the recessed portion 42 of the floating adjustment chamber, and the cross-section of the floating adjustment chamber is basically rectangular, semicircular, semi-elliptical or fan-shaped, so the floating adjustment chamber and the ultrasonic atomizer are not easy to overturn.

[0027] In a preferred embodiment, the mounting base 1 has a plurality of legs 11. Under the support of the legs 11, the height of the ultrasonic atomizer is 0.7m-1.3m. Therefore, the height of the water mist formed by the atomizing sheet is close to the height of the dust formed by the vehicle during driving, which is more targeted and has a better dust reduction effect. The cross-section of the water tank is rectangular, and the width of the water tank is 0.3m-1m. It is suitable for being placed on both sides of the road or in the middle of a national highway or expressway with two-way travel, which saves a lot of labor and mobile vehicle modification costs, and has low operating and maintenance costs. The height of the nozzle is 0.1m-0.4m, which has no effect on the driver's line of sight, and can wash the garbage on the road to the roadside.

[0028] This embodiment is only an illustration of the concept and implementation of the present invention, and does not limit it. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A road cleaning device, characterized in that: It includes a road cleaning device and an air purification device. The road cleaning device includes a nozzle. The air purification device includes a water tank and a fan. A plurality of ultrasonic atomizers are arranged in the water tank. The ultrasonic atomizer includes an atomizing sheet. The water in the water tank can immerse the atomizing sheet. The atomizing sheet vibrates to atomize the water and gather on the water surface and above the water surface. The distance between the top surface of the atomizing sheet and the water surface is 1cm-6cm. A mist outlet is opened on the water tank. The fan can accelerate the atomized water to discharge it out of the water tank from the mist outlet.

2. The road cleaning device according to claim 1, characterized in that: It also includes a mounting seat, on which the road cleaning device and the air purification device are both arranged, and the distance between the top surface of the atomizing sheet and the water surface is 2cm-5cm.

3. The road cleaning device according to claim 2, characterized in that: The nozzles include at least one or a group of left-facing nozzles and / or at least one or a group of right-facing nozzles; or the nozzles are connected to a rotating mechanism, and the rotating mechanism rotates to drive the nozzles to rotate; the nozzles are connected to a water pump via a pipeline.

4. The road cleaning device according to claim 1 or 2, characterized in that: The ultrasonic atomizer is connected to the water tank, and the ultrasonic atomizer is arranged in a plurality of rows, and the heights of the ultrasonic atomizers in each row are substantially the same.

5. The road cleaning device according to claim 3, characterized in that: The rotating mechanism includes a hollow motor, the output shaft of the hollow motor is connected to the nozzle via a hollow connecting rod, the rotation of the hollow motor drives the connecting rod to rotate and then drives the nozzle to rotate around the output shaft of the hollow motor, the pipeline is connected to the nozzle via the output shaft of the hollow motor and the connecting rod, and the nozzle is arranged on the front and / or rear side of the water tank.

6. The road cleaning device according to claim 5, characterized in that: The hollow motor is arranged vertically, the output shaft end of the hollow motor is blocked, the connecting rod is connected with the output shaft of the hollow motor, and the connecting rod forms an angle of 0-10° with the horizontal line.

7. The road cleaning device according to any one of claims 1, 2, 3, 5 and 6, characterized in that: A hollow floating adjustment chamber is also provided in the water tank. The floating adjustment chamber is floated or suspended in the water of the water tank. The ultrasonic atomizer is mounted on the floating adjustment chamber. Liquid, foam or solid filler is filled in the floating adjustment chamber. The distance between the top surface of the atomizer sheet and the water surface is adjusted by adjusting the liquid content, foam content or solid filler in the floating adjustment chamber.

8. The road cleaning device according to claim 7, characterized in that: A water injection port or a filling port is provided on the floating adjustment chamber, each ultrasonic atomizer is mounted on at least two floating adjustment chambers, a recess is provided on the floating adjustment chamber, and the ultrasonic atomizer is mounted in the recess of the floating adjustment chamber. The cross-section of the floating adjustment chamber is basically rectangular, semicircular, semi-elliptical or fan-shaped.

9. The road cleaning device according to any one of claims 1, 2, 3, 5 and 6, characterized in that: The distance between the top surface of the atomizing sheet and the water surface is 3 cm-4.5 cm, and the mist outlets are evenly arranged on the top surface and / or the side surface of the water tank.

10. The road cleaning device according to claim 2, characterized in that: The water tank has a rectangular cross section, the mounting base has a plurality of legs, the ultrasonic atomizer has a height of 0.7m-1.3m, the water tank has a width of 0.3m-1m, the nozzle has a height of 0.1m-0.4m, and a liquid level sensor is provided in the water tank.

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