Simple air purification and dust falling device
By using ultrasonic atomizer in the air purification and dust reduction device to generate fine water mist, the problem of poor dust reduction effect of existing fog cannon vehicles is solved, and efficient air purification and dust reduction effects are achieved, which are suitable for a variety of scenarios.
Patent Information
- Application Number
- CN202311220127.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-21
- Publication Date
- 2025-03-21
AI Technical Summary
The existing fog cannon vehicles have poor results in reducing dust and haze. The water mist particle size is too large, the dust absorption effect is poor, and the equipment cost is high, and the use of parks and other scenarios is limited.
A simple air purification and dust reduction device is designed, and a fine water mist of 0.5-20 microns is generated in the water tank using an ultrasonic atomizer, which is centrally released to the external atmosphere through a exhaust fan or an exhaust fan, so as to efficiently capture PM2.5-PM10 and other inhalable particles.
It achieves efficient air purification and dust reduction effects, saves water and reduces costs, has a simple structure, is easy to move and place, and is suitable for parks, roadside and other scenarios.
Smart Images
Figure CN119656745A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of outdoor air purification and dust removal, and in particular to a simple air purification and dust reduction device. Background Art
[0002] With the development of social economy and production, haze often occurs in many areas in northern my country. Haze is a weather phenomenon caused by particles of PM2.5 and other sizes floating in the atmosphere, dust, aerosols and other particles under certain temperature and humidity conditions and relatively stable conditions. Haze has a great impact on people's health and daily life. At present, there are many kinds of equipment with dust reduction functions, among which sprinkler trucks, fog cannon trucks and street lights equipped with fog cannons are the most widely used. Fog cannon trucks have better water-saving effects than sprinkler trucks and better dust reduction effects than sprinkler trucks. However, the particle size of the water mist produced by fog cannons is mostly 100-600 microns, and the dust adsorption effect is poor. At least 50% of the water droplets cannot be effectively used and fall directly on the ground, causing the ground to be slippery. 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 close to the diameter 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. However, since the diameter of the water mist particles produced by the fog cannon is mostly 100-600 microns, it can only capture PM20 or even larger particles, and the effect of capturing and reducing dust is not ideal for PM2.5-PM10 particles that can be inhaled by the human body.
[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 fall down, which is particularly effective in suppressing submicron ultra-fine dust. The outdoor air purification and dust reduction device is different from the air purifier. It faces the open atmosphere. Therefore, if the air purifier is directly applied to the atmosphere, its dust reduction effect is extremely limited and the cost is extremely high. In addition, scenes such as parks and roadsides not only have high requirements on appearance, but also whether the power supply is convenient directly affects whether the dust reduction equipment can be put into use. Summary of the invention
[0004] The purpose of the present invention is to provide a simple air purification and dust reduction device, which has high water atomization efficiency, good dust and haze reduction effects, is easy to move and place, has a simple structure and low cost.
[0005] To achieve the above object, the present invention adopts the following technical solutions:
[0006] A simple air purification and dust reduction device comprises a movable room, wherein a water tank and a generator set are arranged in the movable room, a plurality of ultrasonic atomizers are arranged in the water tank, the generator set is electrically connected to the ultrasonic atomizer, the ultrasonic atomizer comprises an atomizing sheet, the water in the water tank can immerse the atomizing sheet, the atomizing sheet vibrates to make the water atomized 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 at the top or upper part of the water tank, and an exhaust fan or an induced draft fan is arranged on the mist outlet.
[0007] Preferably, a flow collecting and guiding bin is provided on the water tank, the cross section of which decreases from large to small and is connected to the guide pipe through the mist outlet, and the distance between the top surface of the atomizing sheet and the water surface is 2cm-5cm.
[0008] Preferably, a filtering device and a water pump are also provided in the mobile house. The filtering device is connected to the water tank via the water pump. A liquid level sensor is provided in the water tank. The liquid level sensor is connected to the water pump via a control system. The control system can adjust the vibration frequency of the ultrasonic atomizer and the distance between the top surface of the atomizing sheet and the water surface to 3cm-4.5cm.
[0009] Preferably, the ultrasonic atomizer is connected to a water tank, and the ultrasonic atomizer is arranged in several rows, the heights of the ultrasonic atomizers in each row are substantially the same, and a vent is opened at the top or upper part of the water tank.
[0010] Preferably, an inspection door is provided on the mobile house, and a plurality of fixed legs are provided on the bottom of the mobile house.
[0011] Preferably, the generator set, the filter device and the water pump are all arranged below the water tank, and the generator set is connected to the exhaust gas treatment device.
[0012] Preferably, a camera is provided in the mobile house, the camera is connected to a monitoring system, and the generator set is connected to an ultrasonic atomizer via a transformer.
[0013] Preferably, a baffle is provided in the mobile house, which divides the mobile house into a water treatment area and a power distribution area. The generator set and the exhaust gas treatment device are arranged in the power distribution area, the filter device and the water pump are arranged in the water treatment area, and cameras are provided in the water treatment area and the power distribution area.
[0014] Preferably, rollers are provided at the bottom of the mobile house, and the fixed legs are height-adjustable or retractable. When the fixed legs support the mobile house, the lowest point of the rollers is higher than the bottom of the legs.
[0015] Further preferably, a tow hook is provided on the side of the mobile house, and the mobile house is a simple house.
[0016] In the above technical scheme, by arranging multiple rows of ultrasonic atomizers in the water tank and immersing the ultrasonic atomizers in the water tank, 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 gathers and guides in the collecting and guiding bin under the action of the exhaust fan or the induced draft fan to form a high-concentration water mist, and then is concentratedly released to the outside atmosphere through the guide pipe to ensure the concentration of the water mist discharged into the air, avoid the water mist concentration being too low to cause a large amount of evaporation and loss in a short time, and achieve rapid saturation of the local air relative humidity. The saturated water vapor condenses with dust particles as the nucleus to achieve the dust reduction effect. The distance between the top surface of the atomizer plate and the water surface is maintained between 2cm-5cm, and the atomizer plate 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, haze reduction, and purification effects, while saving more water. By setting up a generator set to power the ultrasonic atomizer, the application occasions are wider. The generator set, filter device, water pump, and water tank are all set up in the mobile house, which meets the scenes with high requirements for appearance such as parks and roadsides. By setting rollers at the bottom of the mobile house, the mobile house can be easily moved. The fixed legs can be adjusted in height or retracted without affecting the movement of the mobile house. At the same time, it can be quickly and firmly fixed outdoors, making it very convenient to move and place. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of the simple air purification and dust reduction device;
[0018] Figure 2 This is a schematic diagram of the water tank structure from a bird's-eye view. DETAILED DESCRIPTION
[0019] The present invention will be further described below in conjunction with the accompanying drawings:
[0020] like Figure 1 , Figure 2As shown, the simple air purification and dust reduction device includes a movable room 1, a water tank 2 and a generator set 3 are arranged in the movable room 1, a plurality of ultrasonic atomizers 4 arranged in a rectangular array are arranged in the water tank 2, the generator set 3 is electrically connected to the ultrasonic atomizer 4 via a transformer 31, each ultrasonic atomizer 4 includes at least one atomizing sheet 41 and the water in the water tank 2 can immerse the atomizing sheet 41, so that the atomizing sheet 41 vibrates to cause the water to be atomized and gathered on the water surface and above the water surface, a mist outlet 5 is opened on the top or upper part of the water tank 2, and an exhaust fan 6 or an induced draft fan is provided on the mist outlet 5, so that the fine mist gathered on the water surface and above the water surface is accelerated to be released to the outside atmosphere through the mist outlet 5. The distance between the top surface of the atomizer sheet and the water surface is 1cm-6cm, preferably 2cm-5cm, and further preferably 3cm-4.5cm. This is 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 appropriate water depth conditions, the water surface on the energy propagation axis will concentrate on raising 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 2cm-5cm, the atomizer sheet can maintain efficient atomization and form more fine fog. In this embodiment, a collecting and guiding bin 7 is provided on the water tank 2. The cross-section of the collecting and guiding bin 7 changes from large to small and is connected to the guide pipe 8 through the mist outlet 5, so that the water mist formed on the water surface and above the water surface is gathered and guided in the collecting and guiding bin 7 under the action of the exhaust fan or the induced draft fan to form high-concentration water mist, and then released to the outside atmosphere through the guide pipe 8 to ensure the concentration of water mist discharged into the air, avoid large-scale evaporation and loss in a short time due to too low water mist concentration, and realize rapid saturation of local air relative humidity. The saturated water vapor condenses with dust particles as nuclei to achieve dust reduction effect.
[0021] In a preferred embodiment, a filter device 11 and a water pump 12 are also provided in the mobile house 1. The filter device 11 is connected to the water tank 2 via the water pump 12 to ensure the water quality in the water tank. Municipal water or tap water is connected to the filter device. A liquid level sensor (not shown in the accompanying drawings) is provided in the water tank 11. The liquid level sensor is connected to the water pump 12 via a control system so that the distance between the top surface of the atomizing sheet and the water surface is maintained at 2cm-5cm. The control system can adjust the vibration frequency of the ultrasonic atomizer, thereby adjusting the water mist particle size to produce droplets that are easier to capture dust according to the air quality, further improving the dust reduction, haze reduction, and purification effects, while saving more water. The ultrasonic atomizer is connected to the water tank through a bracket or a connecting rod 21, and the ultrasonic atomizer is provided with multiple rows, and the height of each row of ultrasonic atomizers is basically the same. A vent is opened at the top or upper part of the water tank to ensure the pressure difference between the inside and outside of the water tank. The mist outlet can be either rectangular or circular.
[0022] In a preferred embodiment, an inspection door 13 is provided on the mobile house 1 to facilitate inspection and daily maintenance. A number of evenly distributed fixed legs 14 are provided at the bottom of the mobile house. The mobile house is quickly fixed outdoors through the legs 14, and the placement is very convenient. The mobile house 1 is a simple house. The generator set, the filter device, and the water pump are all arranged under the water tank. The generator set is connected to the exhaust gas treatment device 32 to avoid the generation of more exhaust gas during the power generation process of the generator set. Further, a baffle 15 is provided in the mobile house. The baffle 15 divides the mobile house into a water treatment area 16 and a power distribution area 17. The generator set and the exhaust gas treatment device are arranged in the power distribution area 17. The filter device and the water pump are arranged in the water treatment area 16. Cameras 18 are provided in the water treatment area and the power distribution area. The camera 18 is connected to the monitoring system (not shown in the figure) to facilitate remote monitoring of the operating status of the generator set and the water pump. A roller 19 is provided at the bottom of the mobile house, and the fixed legs 14 are height-adjustable or retractable, such as thread adjustment or rotation folding, and when the fixed legs support the mobile house, the lowest point of the roller is higher than the bottom of the legs, so that when the device needs to be moved, the height of the fixed legs is lowered or the fixed legs are retracted, and the roller supports the mobile house, and the mobile house can be moved conveniently. After the device is moved to the designated location, the height of the fixed legs is raised or the fixed legs are unfolded, and the fixed legs support the mobile house again, which is very convenient to move and place. Further, a towing hook 111 is provided on the side of the mobile house, and when it needs to be moved, the mobile car or trailer is directly connected to the towing hook to realize the convenient movement of the device.
[0023] 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 simple air purification and dust reduction device, including a movable room, characterized in that: A water tank and a generator set are arranged in the mobile house. A plurality of ultrasonic atomizers are arranged in the water tank. The generator set is electrically connected to the ultrasonic atomizer. The ultrasonic atomizer comprises an atomizing sheet. The water in the water tank can immerse the atomizing sheet. The atomizing sheet vibrates to atomize the water and gathers 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 top or upper part of the water tank, and an exhaust fan or an induced draft fan is arranged on the mist outlet.
2. The simple air purification and dust reduction device according to claim 1 is characterized in that: A flow collecting and guiding bin is arranged on the water tank, the cross section of which changes from large to small and is connected to the guide pipe through the mist outlet, and the distance between the top surface of the atomizing sheet and the water surface is 2cm-5cm.
3. The simple air purification and dust reduction device according to claim 2 is characterized in that: A filtering device and a water pump are also provided in the mobile house. The filtering device is connected to the water tank via the water pump. A liquid level sensor is provided in the water tank. The liquid level sensor is connected to the water pump via a control system. The control system can adjust the vibration frequency of the ultrasonic atomizer. The distance between the top surface of the atomizing sheet and the water surface is 3cm-4.5cm.
4. The simple air purification and dust reduction 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 several rows, the height of each row of ultrasonic atomizers is basically the same, and a vent is opened on the top or upper part of the water tank.
5. The simple air purification and dust reduction device according to claim 1 or 2, characterized in that: An inspection door is arranged on the movable house, and a plurality of fixed legs are arranged on the bottom of the movable house.
6. The simple air purification and dust reduction device according to claim 3 is characterized in that: The generator set, the filter device and the water pump are all arranged below the water tank, and the generator set is connected to the tail gas treatment device.
7. The simple air purification and dust reduction device according to claim 6 is characterized in that: A camera is arranged in the mobile house, the camera is connected to a monitoring system, and the generator set is connected to an ultrasonic atomizer via a transformer.
8. The simple air purification and dust reduction device according to claim 7 is characterized in that: A baffle is provided in the mobile house, which divides the mobile house into a water treatment area and a power distribution area. The generator set and the exhaust gas treatment device are arranged in the power distribution area, and the filter device and the water pump are arranged in the water treatment area. Cameras are provided in both the water treatment area and the power distribution area.
9. The simple air purification and dust reduction device according to claim 5, characterized in that: A roller is arranged at the bottom of the movable house, and the fixed legs are height-adjustable or retractable. When the fixed legs support the movable house, the lowest point of the roller is higher than the bottom of the legs.
10. The simple air purification and dust reduction device according to claim 9, characterized in that: A towing hook is arranged on the side of the mobile house, and the mobile house is a simple house.