Waste gas purification device for air pollution control

Abstract

The invention relates to the technical field of waste gas purification, in particular to a waste gas purification device for air pollution abatement, and adopts the technical scheme that the waste gas purification device comprises a device shell, and a filtering system, a collecting system and a flushing system are arranged in the device shell; the filtering system sequentially comprises a front filtering assembly, a condensing assembly, an electrostatic filtering assembly, a photocatalysis assembly and an activated carbon assembly; the collecting system comprises an oil stain collecting assembly and a water collecting assembly, and the water collecting assembly comprises a waste water tank; the waste water tank is connected with a washing system, the washing system comprises a filtering water pump, one end of the filtering water pump is connected with the waste water tank, the other end of the filtering water pump is connected with a lifting washing device, and the lifting washing device comprises a washing pipe. And the filtering water pump is started to convey water in the wastewater tank to the flushing pipe and spray the water out, so that the wastewater in the waste gas is recycled and used for flushing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas purification, in particular to a waste gas purification device for air pollution control. BACKGROUND

[0002] Air pollution refers to the presence of harmful substances in the air, which can come from natural processes or human activities. Pollutants spread through the air, posing a threat to the environment, human health and ecosystems. The use of waste gas purification devices for air pollution control can effectively reduce the impact of harmful gases generated by industrial and transportation activities on the environment and human health. In today's society, waste gas purification devices for air pollution control have been widely used in various industries.

[0003] In urban and commercial environments, restaurants and commercial kitchens are more serious in terms of oil fume and waste gas emissions. They usually have professional waste gas purification devices to filter the smoke and gas generated during the heating and frying process of food oil. The main components of such waste gas include oil fume particles (40%-60%), volatile organic compounds (20%-30%), carbon dioxide (10%-20%), odor substances (5%-10%), and water vapor (5%-10%). For the highest proportion of oil fume particles in waste gas, the current method is to use electrostatic oil fume purifiers to filter and adsorb oil fume in waste gas. However, the existing electrostatic oil fume purifiers need to be cleaned manually on a regular basis to avoid the impact of oil accumulation. Manual cleaning may cause the following problems:

[0004] 1. Manual cleaning may consume a large amount of water for flushing, which will result in unnecessary waste of water resources, increasing operating costs and possibly burdening the environment;

[0005] 2. Regular manual cleaning requires human intervention. Based on the need to control operating and maintenance costs, the frequency of manual cleaning is long, which may lead to oil accumulation and ineffective filtration of oil fume in waste gas;

[0006] 3. Manual cleaning is irregular in time and may not clean the non-dismantlable parts of the machine, which may result in oil residue and reduce the purification efficiency of the equipment;

[0007] 4. Manual cleaning may require disassembly and reassembly of the equipment, resulting in increased downtime and affecting the continuous operation of the equipment. For high-frequency use of the equipment, such downtime may affect business operations;

[0008] Therefore, it is necessary to invent a waste gas purification device for air pollution control. SUMMARY

[0009] In order to achieve the above object, the present application provides the following technical scheme: a waste gas purification device for air pollution control, comprising a device shell, a filtering system, a collecting system and a flushing system are built-in the device shell;

[0010] The filtering system comprises in sequence a pre-filter assembly, a condensing assembly, an electrostatic filter assembly, a photocatalytic assembly and an activated carbon assembly, the electrostatic filter assembly comprises an adsorption frame, a plurality of electrostatic adsorption plates are arranged and installed in the adsorption frame, a charge frame is arranged on one side of the adsorption frame, a high-voltage pipe is installed in the charge frame, a uniform air distribution plate is arranged on the side of the high-voltage pipe away from the adsorption frame, and the photocatalytic assembly comprises a photolysis frame, a second condensing pipe is installed in the middle of the photolysis frame.

[0011] The collecting system comprises an oil stain collecting assembly and a water collecting assembly, the oil stain collecting assembly comprises a waste oil tank, and the water collecting assembly comprises a waste water tank, a first flow guide plate and a fourth flow guide plate are installed on the top surface of the waste water tank.

[0012] The flushing system comprises a filter water pump, the filter water pump is installed on the top surface of the device shell, a control terminal is installed on one side of the filter water pump, one end of the filter water pump is connected with the waste water tank, and the other end is connected with a lifting flushing device, the lifting flushing device comprises a flushing pipe, and the flushing pipe is arranged above the electrostatic adsorption plate.

[0013] Preferably, the oil stain collecting assembly comprises a second flow guide plate, the second flow guide plate is fixedly installed on the top surface of the waste oil tank, the charge frame is fixedly installed on the top surface of the second flow guide plate, a flow guide groove is arranged on one side of the second flow guide plate, and open holes communicating with the waste oil tank are arranged at both ends of the flow guide groove of the second flow guide plate.

[0014] Preferably, the oil stain collecting assembly comprises a third flow guide plate, the third flow guide plate is fixedly installed on the top surface of the waste oil tank, the adsorption frame is slidingly installed on the top surface of the third flow guide plate, flow guide grooves are arranged on both sides of the third flow guide plate, and open holes communicating with the waste oil tank are arranged at both ends of the flow guide grooves of the third flow guide plate.

[0015] Preferably, the lifting flushing device comprises a top carriage, the top carriage is installed on the inner wall of the device shell above the adsorption frame, the adsorption frame is slidingly connected with the top carriage, toothed plates are installed above both sides of the top carriage, a lifting plate is slidingly installed in the device shell directly above the top carriage, lifting motors are fixedly installed at four corners of the lifting plate, the output ends of the lifting motors are connected with gears, and the gears are meshingly connected with the toothed plates.

[0016] Preferably, the lifting flushing device comprises a water supply network installed on the top surface of the lifting plate, the top surface of the water supply network is connected with a water supply pipe extending to the outside of the device shell and connected with a filtered water pump, and a plurality of flushing pipes are arranged and installed on the bottom surface of the lifting plate, the upper end of the flushing pipe is connected with the water supply network, the surface of the flushing pipe is provided with a spray hole, and the flushing pipe can be inserted between each electrostatic adsorption plate.

[0017] Preferably, the condensing assembly comprises a condensing frame installed on the top surface of the first flow guide plate, the two sides of the first flow guide plate are provided with flow guide grooves, the two ends of the flow guide grooves of the first flow guide plate are provided with openings connected with the waste water tank, the first condensing pipe is installed in the condensing frame, and the outside of the device shell is provided with a condenser, and the first condensing pipe is connected with the condenser.

[0018] Preferably, the light decomposition frame in the photocatalytic assembly is installed on the top surface of the fourth flow guide plate, the two sides of the fourth flow guide plate are provided with flow guide grooves, the two ends of the flow guide grooves of the fourth flow guide plate are provided with openings connected with the waste water tank, the side of the second condensing pipe close to the adsorption frame is arranged and installed with a catalytic plate, and the side of the second condensing pipe away from the catalytic plate is installed with a plurality of ultraviolet lamps.

[0019] Preferably, the front filter assembly comprises front end sliding supports installed on the upper and lower sides of the inner wall of the input end of the device shell, a front end frame is slidingly installed between the two front end sliding supports, and a front filter screen is installed in the front end frame.

[0020] Preferably, the activated carbon assembly comprises rear end sliding supports installed on the upper and lower sides of the inner wall of the output end of the device shell, a rear end frame is slidingly installed between the two rear end sliding supports, and an activated carbon plate is installed in the rear end frame.

[0021] Preferably, one side of the device shell is respectively provided with a first side door, a second side door and a third side door, the first side door is fixedly installed on one side of the front end sliding support, the second side door is rotatably installed on the device shell on the side of the adsorption frame, and the third side door is rotatably installed on the device shell on the side of the rear end frame.

[0022] The beneficial effects of the present application are: the water vapor in the exhaust gas is condensed and collected in the wastewater tank through the condensing assembly, the organic compounds in the exhaust gas are oxidized and decomposed into carbon dioxide and water through the photocatalytic assembly, the decomposed water is condensed and collected in the wastewater tank through the second condensing pipe, when the electrostatic filtration assembly stops working for a long time, the flushing pipe is driven to extend into the electrostatic adsorption plates through the lifting flushing device, the water in the wastewater tank is transported to the flushing pipe and sprayed out through the starting filtration water pump, so that the wastewater in the exhaust gas is recovered, and the effect of washing the surface of the electrostatic adsorption plates is achieved, instead of manual cleaning, the cleaning efficiency is improved, the water resources are saved, the operation cost is reduced, the kitchen can be washed every night after work, the cleaning interval is short, the accumulation of oil stains can be effectively avoided, and the purification efficiency of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The front view provided by the present application is provided;

[0024] Figure 2 The component extraction schematic view provided by the present application is provided;

[0025] Figure 3 The device shell cross-sectional view provided by the present application is provided;

[0026] Figure 4 The internal structure schematic view provided by the present application is provided;

[0027] Figure 5 The corresponding view of each component of the collection system provided by the present application is provided;

[0028] Figure 6 The condenser position schematic view provided by the present application is provided;

[0029] Figure 7 The condenser and the first condensing pipe connection schematic view provided by the present application is provided;

[0030] Figure 8 The filtration water pump position schematic view provided by the present application is provided;

[0031] Figure 9 The condenser and the second condensing pipe connection schematic view provided by the present application is provided;

[0032] Figure 10 The filtration water pump and the control terminal connection schematic view provided by the present application is provided;

[0033] Figure 11 The collection system structure schematic view provided by the present application is provided;

[0034] Figure 12 The collection system explosion view provided by the present application is provided;

[0035] Figure 13A sectional view of the uniform air distribution plate provided by the present application;

[0036] Figure 14 A position schematic view of the lifting flushing device provided by the present application;

[0037] Figure 15 An exploded view of the lifting flushing device and the electrostatic filtration assembly provided by the present application;

[0038] Figure 16 A detail view A of the uniform air distribution plate provided by the present application; Figure 15

[0039] Figure 17 A structure schematic view of the condensation assembly provided by the present application;

[0040] Figure 18 A structure schematic view of the photocatalysis assembly provided by the present application;

[0041] Figure 19 An exploded view of the photocatalysis assembly provided by the present application;

[0042] Figure 20 A structure schematic view of the activated carbon assembly provided by the present application;

[0043] Figure 21 An exploded view of the activated carbon assembly provided by the present application.

[0044] In the figure: device shell 111, first side door 112, second side door 113, third side door 114, front end sliding support 121, front end frame 122, front filter screen 123, first flow guide plate 131, condensation frame 132, first condensation pipe 133, second flow guide plate 141, electric charge frame 142, uniform air distribution plate 143, high pressure pipe 144, third flow guide plate 151, top carriage 152, adsorption frame 153, electrostatic adsorption plate 154, fourth flow guide plate 161, photolysis frame 162, catalytic plate 163, second condensation pipe 164, ultraviolet lamp 165, rear end sliding support 171, rear end frame 172, activated carbon plate 173, lifting plate 181, lifting motor 182, gear 183, toothed plate 184, water supply pipe network 185, flushing pipe 186, waste oil tank 191, waste water tank 192, waste water pipe 193, filtered water pump 194, water supply pipe 195, control terminal 196, condenser 197. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described here are only used to illustrate and explain the present application, and are not used to limit the present application.

[0046] Example 1, as Figure 1 - Figure 15 ​As shown, the waste gas purification device for air pollution treatment in the first aspect of the present application comprises a device shell 111, a filtering system, a collecting system and a flushing system are built in the device shell 111;

[0047] The filtering system comprises in sequence a pre-filter assembly, a condensing assembly, an electrostatic filtering assembly, a photocatalysis assembly and an activated carbon assembly, the electrostatic filtering assembly comprises an adsorption frame 153, a plurality of electrostatic adsorption plates 154 are arranged and installed in the adsorption frame 153, a charge frame 142 is arranged on one side of the adsorption frame 153, a high-pressure pipe 144 is installed in the charge frame 142, a wind uniformizing plate 143 is arranged on the side of the high-pressure pipe 144 away from the adsorption frame 153, the photocatalysis assembly comprises a photolysis frame 162, a second condensing pipe 164 is installed in the middle of the photolysis frame 162;

[0048] The collecting system comprises an oil stain collecting assembly and a water collecting assembly, the oil stain collecting assembly comprises a waste oil tank 191, the water collecting assembly comprises a waste water tank 192, a first flow guide plate 131 and a fourth flow guide plate 161 are installed on the top surface of the waste water tank 192;

[0049] The flushing system comprises a filtering water pump 194, the filtering water pump 194 is installed on the top surface of the device shell 111, a control terminal 196 is installed on one side of the filtering water pump 194, one end of the filtering water pump 194 is connected with the waste water tank 192, and the other end is connected with a lifting flushing device, the lifting flushing device comprises a flushing pipe 186, the flushing pipe 186 is arranged above the electrostatic adsorption plate 154.

[0050] In the above embodiment, it should be noted that the front end of the device shell 111 is connected with a kitchen flue, and the rear end is connected with a ventilation pipeline leading to the outside, when the oil fume waste gas is introduced into the device shell 111 along the kitchen flue, it will pass through the pre-filter assembly, the condensing assembly, the electrostatic filtering assembly, the photocatalysis assembly and the activated carbon assembly in sequence and then be guided out to the ventilation pipeline;

[0051] The pre-filter assembly can filter large particles of dust and impurities in the waste gas, the condensing assembly can condense water vapor in the waste gas and collect it in the waste water tank 192 through the first flow guide plate 131, the photocatalysis assembly can oxidize and decompose organic compounds in the waste gas into carbon dioxide and water, and then condense the decomposed water vapor through the second condensing pipe 164 and collect it in the waste water tank 192 through the fourth flow guide plate 161, and the activated carbon assembly can filter odor molecules in the waste gas;

[0052] The air uniformizing plate 143 has the effect of uniformly distributing air flow, ensuring that the air flow flows uniformly and stably in the filtration system. The high-voltage pipe 144 is made of materials with good electrical conductivity, such as stainless steel, aluminum or copper, and is used to generate a strong electric field to charge the particles in the air. The electrostatic adsorption plate 154 is made of stainless steel, aluminum or carbon composite material, which is a metal plate structure with opposite charge to the charge of the particles, and is used to adsorb the charged particles in the air.

[0053] The working principle of the electrostatic filtration assembly is as follows: starting the high-voltage pipe 144 to form a high-voltage electrostatic field in the charge frame 142. When the oil fume exhaust gas passes through the air uniformizing plate 143 and enters the charge frame 142, the oil fume particles in the gas are charged. Then, the electrostatic adsorption plate 154 is powered, and the charged oil fume particles are adsorbed on the electrostatic adsorption plate 154 after entering the adsorption frame 153, achieving the effect of filtering oil fume particles in the exhaust gas.

[0054] The filtration water pump 194 is composed of two parts, the lower part of the filtration water pump 194 is a composite filtration structure, which includes a mesh filter, a sponge filter, a sand filter, an activated carbon filter, etc., for simple filtration of water in the wastewater tank 192. The upper part of the filtration water pump 194 is composed of a high-power water pump, which can pressurize and output the preliminary filtered water. The filtration water pump 194 is equipped with a pressure sensor for monitoring the water pump pressure and a flow sensor for monitoring the water flow, ensuring the correct operation of the pressurized water pump.

[0055] When the electrostatic filtration assembly is stopped for a long time (such as after the hotel closes at night), the lifting flushing device is controlled to drive the flushing pipe 186 to extend into each electrostatic adsorption plate 154, and the filtration water pump 194 is started to deliver the water in the wastewater tank 192 to the flushing pipe 186 and spray it out, achieving the effect of recycling wastewater in the exhaust gas and flushing the oil fume particles on the surface of the electrostatic adsorption plate 154, replacing manual cleaning, improving cleaning efficiency, saving water resources, reducing operating costs, and performing flushing every night after the kitchen closes, with short cleaning intervals, which can effectively prevent oil accumulation and improve the purification efficiency of the equipment.

[0056] The control terminal 196 includes:

[0057] (1) Microcontroller (MCU): The microcontroller is responsible for receiving, processing and executing various instructions. The controller needs to support real-time calculation and multitasking processing to ensure the coordinated work of each subsystem. The microcontroller (MCU) has a bottom control logic, which can only start the motor drive module and the water pump control module when the electrostatic filtration system is not running for a long time and is completely powered off.

[0058] (2) Sensor interface module: used to connect various sensors to obtain real-time data, in this device, it is connected with temperature sensor, humidity sensor, pressure sensor, flow sensor, water level sensor, ultraviolet intensity sensor;

[0059] (3) Motor drive module: including H-bridge circuit, PWM speed regulation module, used to control the start, stop and speed regulation of the motor, the motor drive module needs to provide sufficient current and voltage to drive the motor and control its speed, direction and rotation state;

[0060] (4) Water pump control module: including relay, solid state relay (SSR), current sensor, etc., used to control the start and stop of the filter pump 194 and the running state, the water pump control module receives feedback data from the pressure sensor to automatically adjust the operation of the filter pump 194;

[0061] (5) Ultraviolet photocatalytic system control module: used to control the opening and closing of the ultraviolet lamp and adjust the ultraviolet intensity, the working state of the ultraviolet lamp is adjusted by PWM to ensure the effective operation of the ultraviolet photocatalytic system;

[0062] (6) Electrostatic filtration system control module: including electrostatic filtration system control module, used to control the voltage, frequency and time of high-voltage tube 144 and electrostatic adsorption plate 154, also has the function of monitoring the working state of the electrostatic filtration system,

[0063] (7) Power management module: including power adapter, voltage stabilizing module, battery management system, providing stable power supply for the system to ensure that all components can work normally, usually including power conversion, voltage stabilization and battery backup functions.

[0064] Example 2, as shown in Figure 5 、 Figure 11 and Figure 2 , a waste gas purification device for air pollution control, including example 1, in addition, the oil stain collection assembly includes a second deflector plate 141, the second deflector plate 141 is fixedly installed on the top surface of the waste oil tank 191, the charge frame 142 is fixedly installed on the top surface of the second deflector plate 141, one side of the second deflector plate 141 is provided with a flow guide groove, and the flow guide groove of the second deflector plate 141 is provided with an opening communicating with the waste oil tank 191 at both ends, the oil stain collection assembly includes a third deflector plate 151, the third deflector plate 151 is fixedly installed on the top surface of the waste oil tank 191, the adsorption frame 153 is slidingly installed on the top surface of the third deflector plate 151, the third deflector plate 151 is provided with a flow guide groove on both sides, and the flow guide groove of the third deflector plate 151 is provided with an opening communicating with the waste oil tank 191 at both ends.

[0065] In the above examples, it should be noted that the surface of the second deflector plate 141 and the third deflector plate 151 is provided with an oil-repellent coating, which is not easy to adhere to oil smoke particles;

[0066] In the charge frame 142, a small amount of oil fume particles may adhere to the surface of the air distribution plate 143 and the high-pressure pipe 144. These oil fume particles will gradually accumulate and drip, be collected by the second guide plate 141, and flow into the waste oil tank 191 along the guide groove of the second guide plate 141.

[0067] Similarly, as the oil fume particles accumulate on the electrostatic adsorption plate 154, waste oil will gradually drip downward and be collected by the third guide plate 151, and flow into the waste oil tank 191 along the guide groove of the third guide plate 151. When the surface of the electrostatic adsorption plate 154 is washed, water and oil fume particles will also be collected by the third guide plate 151 and flow into the waste oil tank 191 along the guide groove of the third guide plate 151. The waste oil tank 191 is provided with an oil discharge pipeline on the side for discharging waste oil.

[0068] Embodiment 3, as shown in Figure 3 Figure 5 Figure 14 Figure 16 As shown, a waste gas purification device for air pollution control includes embodiment 2, in addition, the lifting washing device includes a top carriage 152 installed on the inner wall of the device housing 111 above the adsorption frame 153, the adsorption frame 153 is in sliding connection with the top carriage 152, the top carriage 152 is installed with a toothed plate 184 on both sides above, the device housing 111 above the top carriage 152 is slidingly installed with a lifting plate 181, the lifting plate 181 is fixedly installed with a lifting motor 182 at the four corners, the output end of the lifting motor 182 is connected with a gear 183, the gear 183 is in meshing connection with the toothed plate 184, the lifting washing device includes a water supply network 185, the water supply network 185 is installed on the top surface of the lifting plate 181, the water supply network 185 is connected with a water supply pipe 195 on the top surface, the water supply pipe 195 extends to the outside of the device housing 111 and is connected with a filtered water pump 194, a plurality of flushing pipes 186 are arranged and installed on the bottom surface of the lifting plate 181, the upper end of the flushing pipe 186 is connected with the water supply network 185, the flushing pipe 186 is provided with a spray hole on the surface, and the flushing pipe 186 can be inserted between each electrostatic adsorption plate 154.

[0069] In the above embodiments, it should be noted that the waste water tank 192 is provided with a water pipe on the side, and a water level sensor is arranged in the waste water tank 192. The water level sensor is connected with a sensor interface module in the control terminal 196, so that the control terminal 196 can obtain the water level information in the waste water tank 192 in real time. When the water level in the waste water tank 192 is sufficient, the filtered water pump 194 can be controlled to perform cleaning work;

[0070] ​​​The motor drive module is controlled by the microcontroller (MCU) in the control terminal 196 to start the lifting motor 182, which drives the gear 183 to rotate, and the gear 183 meshes with the toothed plate 184 to drive the lifting plate 181 to move vertically, so that the linkage flushing pipe 186 is inserted or removed between the electrostatic adsorption plates 154.

[0071] The water pump control module is controlled by the microcontroller (MCU) in the control terminal 196 to start the filter water pump 194, which pumps the water in the wastewater tank 192 into the filter water pump 194 for filtration and injection into the water supply pipe network 185 along the water supply pipe 195, and then distributed to each flushing pipe 186 for spraying, thereby achieving the flushing of the surface of the electrostatic adsorption plate 154.

[0072] Embodiment 4, as shown in Figure 6 Figure 12 Figure 17 Figure 19 A waste gas purification device for air pollution control, including embodiment 1, in addition, the condensation assembly includes a condensation frame 132 installed on the top surface of the first flow guide plate 131, the first flow guide plate 131 is provided with flow guide grooves on both sides, and the flow guide grooves of the first flow guide plate 131 are provided with openings communicating with the wastewater tank 192 at both ends. The first condensation pipe 133 is installed in the condensation frame 132, the condenser 197 is arranged outside the device shell 111, the first condensation pipe 133 is connected to the condenser 197, the photolysis frame 162 in the photocatalysis assembly is installed on the top surface of the fourth flow guide plate 161, the fourth flow guide plate 161 is provided with flow guide grooves on both sides, and the flow guide grooves of the fourth flow guide plate 161 are provided with openings communicating with the wastewater tank 192 at both ends. The catalytic plate 163 is arranged on one side of the second condensation pipe 164 close to the adsorption frame 153, and a plurality of ultraviolet lamps 165 are installed on the side of the second condensation pipe 164 away from the catalytic plate 163.

[0073] In the above embodiments, it should be noted that the condensation frame 132 is equipped with temperature and humidity sensors, which are connected to the sensor interface module in the control terminal 196, so that the control terminal 196 can monitor the temperature and humidity in the condensation frame 132 in real time, and the condenser 197 is also connected to the microcontroller (MCU) in the control terminal 196 and controlled by the control terminal 196;

[0074] By starting the condenser 197 to continuously circulate and input condensate water into the first condensation pipe 133 and the second condensation pipe 164, the temperature in the condensation frame 132 and the photolysis frame 162 is reduced, and the water vapor is condensed into droplets. The condensed water droplets fall and are collected by the first flow guide plate 131 and the fourth flow guide plate 161, and flow into the wastewater tank 192 along the flow guide grooves;

[0075] ​​​The light decomposition frame 162 is provided with an ultraviolet intensity sensor connected to a sensor interface module in the control terminal 196, so that the control terminal 196 can monitor the ultraviolet intensity in the light decomposition frame 162 in real time;

[0076] The catalytic plate 163 is made of titanium dioxide material and has strong catalytic effect under ultraviolet light irradiation. By controlling the ultraviolet light catalytic system control module through the control terminal 196, the ultraviolet lamp 165 is turned on, and the ultraviolet light irradiates on the catalytic plate 163, oxidizing and decomposing the organic compounds in the exhaust gas into carbon dioxide and water, so as to achieve the effect of decomposing the organic compounds in the exhaust gas.

[0077] Embodiment 5, as shown in Figure 1 Figure 10 Figure 20 Figure 21 As shown in Embodiment 5, an exhaust gas purification device for air pollution control is provided, which comprises Embodiment 1. In addition, the pre-filter assembly comprises front end sliding supports 121 installed on the inner walls of the input end of the device shell 111 on both sides, and a front end frame 122 is slidingly installed between the two front end sliding supports 121. A pre-filter screen 123 is installed in the front end frame 122. The activated carbon assembly comprises rear end sliding supports 171 installed on the inner walls of the output end of the device shell 111 on both sides, and a rear end frame 172 is slidingly installed between the two rear end sliding supports 171. An activated carbon plate 173 is installed in the rear end frame 172. The device shell 111 is provided with a first side door 112, a second side door 113 and a third side door 114 on one side. The first side door 112 is fixedly installed on one side of the front end sliding support 121. The second side door 113 is rotatably installed on the side of the adsorption frame 153 of the device shell 111. The third side door 114 is rotatably installed on the side of the rear end frame 172 of the device shell 111.

[0078] In the above embodiment, it should be noted that the pre-filter screen 123 is made of stainless steel, polypropylene (PP), nylon, polyester (PET) and the like, which is used to filter large particles of dust and impurities in the exhaust gas. By pulling the first side door 112 to link the front end frame 122 and pull it out of the front end sliding support 121, the pre-filter screen 123 can be replaced and cleaned.

[0079] The activated carbon plate 173 can adsorb odor molecules in the exhaust gas. By opening the third side door 114, the rear end frame 172 in the rear end sliding support 171 is pulled out, so as to replace the activated carbon plate 173.

[0080] By opening the second side door 113, the adsorption frame 153 is slidingly pulled out, so as to maintain the inside of the electrostatic filter assembly.

[0081] ​​​The use process of the present application is as follows: when the oil fume waste gas is introduced into the device shell 111 along the kitchen flue, first, the pre-filter screen 123 filters the large particles of dust and impurities in the waste gas, then the condenser 197 continuously inputs condensate water into the first condensing pipe 133, reduces the temperature in the condensing frame 132, and the water vapor is condensed into droplets which are collected by the first flow guide plate 131 and flow into the wastewater tank 192, then the high-voltage pipe 144 forms a high-voltage electrostatic field in the charge frame 142, when the oil fume waste gas passes through the air diffuser plate 143 and enters the charge frame 142, the oil fume particles in the gas are charged, then the electrostatic adsorption plate 154 is powered, and the charged oil fume particles enter the adsorption frame 153 and are adsorbed on the electrostatic adsorption plate 154, as the accumulation of oil fume particles on the electrostatic adsorption plate 154, the waste oil will gradually drip down and be collected by the third flow guide plate 151, and flow into the waste oil tank 191 along the guide groove of the third flow guide plate 151, then the control terminal 196 coordinates the ultraviolet photocatalytic system control module to control the opening of the ultraviolet lamp 165, and the ultraviolet light irradiates on the catalytic plate 163 to oxidize and decompose the organic compounds in the waste gas into carbon dioxide and water, the condenser 197 continuously circulates and inputs condensate water into the second condensing pipe 164 to reduce the temperature in the photodecomposition frame 162, and the water vapor is condensed into droplets and collected by the fourth flow guide plate 161 and introduced into the wastewater tank 192, finally, the activated carbon plate 173 adsorbs the odor molecules in the waste gas, and the gas after the filtration process is discharged to the ventilation pipe; when the electrostatic filtration system is not operated for a long time and is completely powered off, the microcontroller (MCU) in the control terminal 196 coordinates the motor drive module to control the start of the lifting motor 182, the lifting motor 182 drives the gear 183 to rotate, the gear 183 meshes with the toothed plate 184 to drive the lifting plate 181 to move vertically, the linkage flushing pipe 186 is inserted between each electrostatic adsorption plate 154, and then the microcontroller (MCU) in the control terminal 196 coordinates the water pump control module to control the start of the filter water pump 194 to pump the water in the wastewater tank 192 into the filter water pump 194 for filtration and injection into the water supply pipe network 185 along the water supply pipe 195, and then distributed to each flushing pipe 186 and sprayed, realizing automatic washing of the surface of the electrostatic adsorption plate 154.

[0082] The above is only a preferred embodiment of the present application, and any skilled person in the art can modify the present application or modify it into an equivalent technical solution using the above-described technical solutions. Therefore, any simple modification or equivalent replacement according to the technical solutions of the present application is within the scope of protection of the present application.

Claims

1. A waste gas purification device for air pollution control, comprising a device housing (111), wherein the device housing (111) houses a filtration system, a collection system, and a flushing system, characterized in that: The filtration system includes, in sequence, a pre-filter assembly, a condenser assembly, an electrostatic filter assembly, a photocatalytic assembly, and an activated carbon assembly. The electrostatic filter assembly includes an adsorption frame (153), in which several electrostatic adsorption plates (154) are arranged and installed. A charge frame (142) is provided on one side of the adsorption frame (153), and a high-voltage pipe (144) is installed in the charge frame (142). A uniform air distribution plate (143) is provided on the side of the high-voltage pipe (144) away from the adsorption frame (153). The photocatalytic assembly includes a photodecomposition frame (162), in which a second condenser pipe (164) is installed in the middle. The collection system includes an oil collection component and a water collection component. The oil collection component includes a waste oil tank (191), and the water collection component includes a waste water tank (192). The top surface of the waste water tank (192) is equipped with a first guide plate (131) and a fourth guide plate (161). The flushing system includes a filter water pump (194), which is installed on the top surface of the device housing (111). A control terminal (196) is installed on one side of the filter water pump (194). One end of the filter water pump (194) is connected to the wastewater tank (192), and the other end is connected to a lifting flushing device. The lifting flushing device includes a flushing pipe (186), which is positioned above the electrostatic adsorption plate (154).

2. The waste gas purification device for air pollution control according to claim 1, characterized in that: The oil collection assembly includes a second guide plate (141), which is fixedly installed on the top surface of the waste oil tank (191). The charge frame (142) is fixedly installed on the top surface of the second guide plate (141). A guide groove is provided on one side of the second guide plate (141), and openings connecting the waste oil tank (191) are provided at both ends of the guide groove of the second guide plate (141).

3. The waste gas purification device for air pollution control according to claim 2, characterized in that: The oil collection assembly includes a third guide plate (151), which is fixedly installed on the top surface of the waste oil tank (191). The adsorption frame (153) is slidably installed on the top surface of the third guide plate (151). Guide grooves are provided on both sides of the third guide plate (151), and openings connecting the waste oil tank (191) are provided at both ends of the guide grooves of the third guide plate (151).

4. The waste gas purification device for air pollution control according to claim 3, characterized in that: The lifting and rinsing device includes a top slide (152), which is installed on the inner wall of the device housing (111) above the adsorption frame (153). The adsorption frame (153) is slidably connected to the top slide (152). Toothed plates (184) are installed on the upper sides of the top slide (152). A lifting plate (181) is slidably installed inside the device housing (111) directly above the top slide (152). Lifting motors (182) are fixedly installed at the four corners of the lifting plate (181). The output end of the lifting motor (182) is connected to a gear (183), and the gear (183) meshes with the toothed plate (184).

5. The waste gas purification device for air pollution control according to claim 4, characterized in that: The lifting and flushing device includes a water supply network (185), which is installed on the top surface of the lifting plate (181). A water supply pipe (195) is connected to the top surface of the water supply network (185). The water supply pipe (195) extends to the outside of the device housing (111) and is connected to a filter water pump (194). Several flushing pipes (186) are arranged and installed on the bottom surface of the lifting plate (181). The upper end of the flushing pipe (186) is connected to the water supply network (185). The surface of the flushing pipe (186) is provided with spray holes. The flushing pipe (186) can be inserted between each electrostatic adsorption plate (154).

6. The waste gas purification device for air pollution control according to claim 1, characterized in that: The condensation assembly includes a condensation frame (132), which is installed on the top surface of a first guide plate (131). The first guide plate (131) has guide grooves on both sides. The guide grooves of the first guide plate (131) have openings at both ends that connect to a wastewater tank (192). A first condenser pipe (133) is installed inside the condensation frame (132). A condenser (197) is installed on the outside of the device housing (111). The first condenser pipe (133) is connected to the condenser (197).

7. The waste gas purification device for air pollution control according to claim 6, characterized in that: The photocatalytic decomposition frame (162) in the photocatalytic component is installed on the top surface of the fourth guide plate (161). The fourth guide plate (161) has guide grooves on both sides. The guide grooves of the fourth guide plate (161) have openings at both ends that connect to the wastewater tank (192). The second condenser tube (164) has a catalyst plate (163) arranged on the side close to the adsorption frame (153). Several ultraviolet lamps (165) are installed on the side of the second condenser tube (164) away from the catalyst plate (163).

8. The waste gas purification device for air pollution control according to claim 1, characterized in that: The pre-filter assembly includes a front sliding bracket (121), which is installed on the upper and lower sides of the inner wall of the input end of the device housing (111). A front frame (122) is slidably installed between the two front sliding brackets (121), and a pre-filter screen (123) is installed inside the front frame (122).

9. A waste gas purification device for air pollution control according to claim 8, characterized in that: The activated carbon assembly includes a rear sliding bracket (171), which is installed on the upper and lower sides of the inner wall of the output end of the device housing (111). A rear frame (172) is slidably installed between the two rear sliding brackets (171), and an activated carbon plate (173) is installed inside the rear frame (172).

10. A waste gas purification device for air pollution control according to claim 9, characterized in that: The device housing (111) is provided with a first side door (112), a second side door (113) and a third side door (114) on one side. The first side door (112) is fixedly installed on one side of the front sliding bracket (121), the second side door (113) is rotatably installed on the device housing (111) on the side of the adsorption frame (153), and the third side door (114) is rotatably installed on the device housing (111) on the side of the rear frame (172).

Images