A smoke / dust / odour purification device

Abstract

This invention discloses a smoke / dust / odor purification device, relating to the technical field of exhaust gas purification devices. It includes a dust filter, a fan, a smoke / dust purification tank, and a wastewater filter, with each component sealed and connected to form a closed-loop water circulation system. The dust filter contains a filter screen, the smoke / dust purification tank contains multiple layers of purification plates, and the wastewater filter contains barrel-shaped filter cotton and a water level controller. During operation, smoke, dust, and odors are pre-treated in the dust filter and then enter the smoke / dust purification tank. They are further refined by the purification plates and repeatedly contacted with water or an aqueous solution to achieve purification. The resulting wastewater, sludge, and residue are filtered and recycled in the wastewater filter. The purified gas is then discharged in compliance with standards. This invention achieves continuous operation without shutting down the system, has a simple structure, excellent purification effect, and wide applicability, effectively solving the problems of existing equipment requiring downtime for maintenance and high operating costs.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas purification devices, and more specifically, to a smoke / dust / odor purification device adapted to the purification of industrial coal combustion smoke, diesel / waste engine oil black smoke, catering fumes, and various dust and odors. Background Technology

[0002] With rapid economic development and increased public awareness of environmental protection, emission control standards for industrial coal-fired smoke and particulate matter in various production and living scenarios are continuously tightening. Cement plants, metallurgical plants, die-casting plants, waste incineration industries, catering establishments, and other enterprises and scenarios that emit particulate matter are all facing strict pressure to meet emission standards and urgently need efficient and convenient purification equipment to support environmental compliance.

[0003] Existing dust collectors are mainly divided into three categories: electrostatic precipitators, bag filters, and combined electrostatic precipitators and bag filters. Combined electrostatic precipitators involve sequentially setting up an electrostatic precipitator and a bag filter, connected directly or via a flue. This results in a single exhaust gas path, requiring a complete shutdown of the production process for maintenance or cleaning, severely impacting production efficiency. Furthermore, existing dust purifiers also include those based on water spray and electrostatic principles. Water spray purifiers require periodic shutdowns for cleaning, disrupting normal production, posing a risk of secondary pollution, and are bulky, leading to high manufacturing and operating costs. Electrostatic purifiers are difficult to clean, also requiring a complete shutdown, and have a complex structure and high maintenance costs. The core drawback of all these types of equipment is the need for maintenance shutdowns, significantly reducing production efficiency and increasing operating costs. They are unable to meet the continuous purification needs of various pollutants in different scenarios, and existing technologies urgently need improvement. Summary of the Invention

[0004] Purpose of the invention

[0005] This invention solves the problems of existing fume purification equipment, such as the need for downtime maintenance, inability to operate continuously, complex structure, and high cost. It provides four different purification devices with varying structures, suitable for purifying fumes, dust, and odors across multiple industries. The devices enable continuous operation without shutdown, feature a simple structure, excellent purification effect, and wide applicability, effectively reducing enterprise costs while meeting environmental emission requirements.

[0006] Technical solution

[0007] This invention provides four specific embodiments, which are described in detail below:

[0008] Implementation method 1: Includes a pre-filtered smoke / dust / odor purification device (refer to...) Figure 1 Install)

[0009] This device is suitable for comprehensive purification scenarios involving various types of smoke, dust, and odors. It consists of one fan, one dust filter, one smoke purification filter, and one wastewater filter. The structure and connection relationship of each component are as follows:

[0010] Dust filter bin: It adopts a sealed bin structure, with an air inlet, filter screen, and air outlet respectively located on its side wall and top. The air inlet is flush with the filter screen, and the airflow and vibration generated by the fan operation achieve self-cleaning of the filter screen, effectively preventing filter clogging. The filter screen is located below the air outlet, with a distance of 100mm between them. The filter screen structure is consistent with the purification plate, consisting of a microporous plate and a plate frame support. The microporous plate is fixedly installed in the middle of the plate frame support, with a pore size of 0.3mm-0.4mm, used to trap large dust particles in the gas. The air outlet of the dust filter bin is located at the top of the bin and is sealed to the air inlet of the dust purification bin through a pipe to ensure no gas leakage and guarantee purification efficiency.

[0011] Dust purification bin: Adopting a sealed bin structure, its side walls, top, and bottom are respectively equipped with an air inlet, air outlet, purification plate, nozzle, and wastewater drain valve. The air inlet is located at the bottom of the bin, below the lowest purification plate, facilitating the thorough passage of pollutants through the purification plate for purification. The purification plates are stacked vertically at intervals of 150mm-230mm, with microporous plates having a pore size of 0.3mm-0.4mm, used to refine fine particulate pollutants and improve purification efficiency. The nozzle is located below the lowest purification plate for recirculating or injecting clean water, further enhancing purification. Only one wastewater drain valve extends from the bottom of the bin for periodically discharging hard-to-filter debris deposited inside. The air outlet of the dust purification bin is sealed to the fan inlet via a pipe, ensuring the purified gas smoothly enters the fan.

[0012] Wastewater filter tank: Located directly below the blower outlet, it adopts an open-top tank structure. Inside the tank, a barrel-shaped mesh support, barrel-shaped filter cotton, and a water level controller are fixedly installed. The barrel-shaped filter cotton is nested inside the barrel-shaped mesh support to filter sludge and residue in the wastewater, achieving water purification and recycling. The water valve at the bottom of the tank is connected to the nozzle at the bottom of the dust purification tank via a water pipe, forming a closed-loop water circulation circuit to achieve water reuse and reduce operating costs. Workflow: Connect the water level controller to an external water source, fill the wastewater filter and dust purification tanks with water, and then start the blower. External exhaust fumes, dust, and pungent odors enter through the air inlet of the dust filter. After being filtered by the filter screen, large dust particles are trapped and deposited inside the dust filter, while fine dust particles, along with the fumes and pungent odors, enter the bottom of the dust purification tank through the pipe from the air outlet of the dust filter. The fine dust particles, fumes, and pungent odors surge upwards vertically, are refined by the multi-layer purification plates at the air outlet, and repeatedly come into full contact with water or an aqueous solution to separate pollutants from gases, thus completing the purification process. Wastewater, sludge, residue, and purified gas generated during the purification process are discharged from the blower outlet under the driving force of water circulation. The wastewater, sludge, and residue flow into the wastewater filter below for filtration, and the filtered clean water flows back to the nozzles through the water pipe, achieving continuous circulation purification without the need to stop the machine for sewage discharge.

[0013] Implementation Method 2: Single-stage purification tank type smoke / odor purification device (refer to...) Figure 2 (Installation) This device is suitable for various smoke / odor purification scenarios and consists of one fan, one smoke purification tank, and one wastewater filter tank. The structure and connection relationship of each component are as follows: Smoke Purification Tank: It adopts a sealed tank structure, with air inlet, air outlet, nozzle, wastewater drain valve, and purification plate respectively installed on its side wall, top, and bottom; the air inlet is located at the bottom of the tank, below the lowest purification plate, and is used to introduce external smoke; the air outlet is located at the top of the tank and is sealed to the fan air inlet through a pipe; the purification plates are located above the air inlet and are stacked vertically at intervals of 150mm. — The 230mm purification plate consists of a microporous plate and a frame support. The microporous plate, with a hole diameter of 0.3mm-0.4mm, is fixedly installed in the middle of the frame support and is used to refine and purify pollutants. The nozzle is located below the lowest purification plate inside the tank and is used for recirculating clean water or injecting clean water to help improve the purification effect. There is only one wastewater discharge valve at the bottom of the tank, which is used to periodically discharge the debris accumulated inside the tank. The air outlet of the dust purification tank is connected to the air inlet of the fan through a pipe in a sealed manner to ensure gas flow without leakage and to ensure continuous purification.

[0014] Wastewater Filter Tank: Located directly below the blower outlet, it features an open-top tank structure. Inside, a barrel-shaped mesh support, barrel-shaped filter cotton, and a water level controller are fixedly installed. The barrel-shaped filter cotton is nested inside the barrel-shaped mesh support to filter sludge and debris from the wastewater. The water level controller is located below the barrel-shaped mesh support to automatically control the water level inside the tank, ensuring stable operation of the water circulation system. A water valve extends from the bottom of the wastewater filter tank, connecting to the bottom nozzle of the dust purification tank via a water pipe, forming a closed-loop water circulation circuit to achieve water resource recycling.

[0015] Workflow: Connect the water level controller to an external water source, fill the wastewater filter tank and dust purification tank with water and add an appropriate amount of oil stain cleaning agent, then start the fan; external waste oil fumes enter the dust purification tank through the air inlet, surge upwards vertically, and are refined by the multi-layer purification plates at the air outlet, while repeatedly contacting water or aqueous solution to separate the dust from the gas, thus completing the purification; the wastewater sludge and purified gas formed during the purification process are discharged from the fan outlet under the driving action of water circulation, with the purified gas directly meeting emission standards, while the wastewater sludge flows into the wastewater filter tank below for filtration, and the filtered clean water flows back to the nozzle through the water pipe, achieving continuous circulation purification operation without the need for shutdown maintenance.

[0016] Implementation Method 3: Dual-tank series smoke / odor purification device (refer to...) Figure 3 Install)

[0017] This device is suitable for various high-concentration smoke / odor purification scenarios. It consists of two fans 2(1) and 2(2), two smoke purification tanks 1(1) and 1(2), and one wastewater filter tank. The structure and connection relationship of each component are as follows:

[0018] Dust purification bins 1(1) and 1(2): Both adopt a closed bin structure, and the structure is completely consistent with the dust purification bin in Implementation Method 1. The side wall, top and bottom are respectively equipped with air inlet, air outlet, purification plate, nozzle and wastewater discharge valve. The air inlet is located at the bottom of the bin, below the lowest purification plate. The air outlet is located at the top of the bin. The purification plates are stacked vertically at intervals of 150mm-230mm, and the micro-perforated plate has a hole diameter of 0.3mm-0.4mm. The nozzle is located below the lowest purification plate and is used for recirculating clean water or injecting clean water. Only one wastewater discharge valve is led out from the bottom of the bin and is used for periodically discharging debris. The two dust purification bins are set in series to achieve multi-stage dust purification and ensure that high-concentration dust is discharged in compliance with standards. Wastewater filter barrel: Located directly below the air outlet of blower 2(2), it adopts an open barrel structure. Inside the barrel, a barrel-shaped mesh support, barrel-shaped filter cotton, and a water level controller are fixedly installed. The barrel-shaped filter cotton is nested inside the barrel-shaped mesh support and is used to filter sludge and debris in the wastewater. The water level controller is located below the barrel-shaped mesh support and is used to automatically control the water level in the barrel to ensure stable water circulation. A water valve is led out from the bottom of the wastewater filter barrel and is sealed to the bottom nozzle of the dust purification barrel 1(1) through a water pipe to provide circulating clean water for the entire device and realize the reuse of water resources.

[0019] Connection relationship: Both fans 2(1) and 2(2) are centrifugal fans. The air inlet of fan 2(1) is sealed to the air outlet of dust purification bin 1(1) through a pipe. The air outlet of fan 2(1) is sealed to the air inlet of dust purification bin 1(2) through a pipe, so as to realize the stable transportation of dust from the first-stage purification bin to the second-stage purification bin. The air inlet of fan 2(2) is sealed to the air outlet of dust purification bin 1(2) through a pipe, so as to discharge the gas after secondary purification.

[0020] Workflow: Connect the water level controller to the external water source, fill the wastewater filter bucket and the two dust purification buckets 1(1) and 1(2) with water and add an appropriate amount of oil stain cleaning agent, and start the two fans 2(1) and 2(2) at the same time; external waste oil fumes enter from the air inlet of the dust purification bucket 1(1), flow through the multi-layer purification plates inside the dust purification buckets 1(1) and 1(2) in sequence, and achieve multi-level purification through multi-layer refinement and full repeated contact with water or aqueous solution to ensure that the dust emission meets the standards; the wastewater sludge and purified gas formed during the purification process are discharged from the air outlet of the fan 2(2) under the action of water circulation, and the wastewater sludge flows into the wastewater filter bucket below for filtration treatment. The filtered clean water flows back to the nozzle of the dust purification bucket 1(1) through the water pipe to achieve continuous circulation purification operation without the need to stop the machine for cleaning.

[0021] Implementation Method 4: Dust purification device with pre-filtration (refer to...) Figure 4 Install)

[0022] Experiments have verified that, under the same conditions, this device is far less difficult to purify dust than to purify smoke, achieving a purification efficiency several times higher. The core reason is that dust consists mostly of non-sticky solid particles that are relatively large, making them easier to trap and filter. Smoke, on the other hand, often contains oil and other gas components, making it highly sticky and difficult to separate. Therefore, this device is specifically designed for various dust purification scenarios. It eliminates the need for multi-stage purification structures, achieving thorough purification through a single-stage pre-filtration + water washing process. It consists of one fan, one dust filter, one smoke purification tank, and one wastewater filter. The structure and connection relationships of each component are as follows:

[0023] Dust Filter Canister: The structure is completely identical to that of the dust filter canister in Implementation Method 1—it adopts a sealed canister structure, with an air inlet, filter screen, and air outlet respectively located on its side wall and top. The air inlet is flush with the filter screen, and the airflow and vibration generated by the fan operation achieve self-cleaning of the filter screen, preventing clogging. The filter screen is located below the air outlet, with a distance of 100mm between them. The filter screen structure is the same as that of the purification plate, consisting of a microporous plate and a plate frame support. The microporous plate is fixedly installed in the middle of the plate frame support, with a pore size of 0.3mm-0.4mm, used to trap large dust particles in the gas. The air outlet of the dust filter canister is located at the top of the canister and is sealed to the air inlet of the dust purification canister through a pipe, ensuring that the dust enters the subsequent purification stage smoothly after pretreatment.

[0024] Dust Purification Barrel: The structure is completely identical to that of the dust purification barrel in Implementation Method 1—it adopts a sealed barrel structure, with air inlet, air outlet, purification plate, nozzle, and wastewater discharge valve respectively installed on its side wall, top, and bottom; the air inlet is located at the bottom of the barrel, below the lowest purification plate; the purification plates are stacked vertically at intervals of 150mm-230mm, with microporous plates having a pore size of 0.3mm-0.4mm, used to refine and purify fine dust particles; the nozzle is located below the lowest purification plate for returning clean water; there is only one wastewater discharge valve at the bottom of the barrel; the air outlet of the dust purification barrel is sealed to the air inlet of the fan through a pipe to ensure that wastewater and residue flow smoothly into the wastewater filter barrel.

[0025] Wastewater filter barrel: Located directly below the blower outlet, its structure is completely identical to that of the wastewater filter barrel in Embodiment 1. It adopts an open barrel structure, with a barrel-shaped mesh support, barrel-shaped filter cotton, and a water level controller fixedly installed inside the barrel. The barrel-shaped filter cotton is nested inside the barrel-shaped mesh support and is used to filter dust and residue in the wastewater. The water valve at the bottom of the barrel is connected to the nozzle at the bottom of the dust purification barrel through a water pipe, forming a closed-loop water circulation circuit, which effectively improves the water resource utilization rate.

[0026] Workflow: Connect the water level controller to an external water source, fill the wastewater filter and dust purification tanks with water, and then start the fan. External dust enters through the air inlet of the dust filter tank. After being filtered by the filter screen, large dust particles are trapped and deposited inside the dust filter tank, while fine dust particles enter the bottom of the dust purification tank through the pipe from the air outlet of the dust filter tank. The fine dust particles surge upwards vertically and are refined by the multi-layer purification plates at the air outlet. At the same time, they come into full and repeated contact with water or aqueous solution to separate the dust from the gas, thus completing the purification. The wastewater residue and purified gas formed during the purification process are discharged from the air outlet of the fan under the driving action of water circulation. The wastewater residue flows into the wastewater filter tank below for filtration. The filtered clean water flows back to the nozzle through the water pipe, realizing continuous circulation dust purification operation without the need to stop the machine for sewage discharge.

[0027] Invention Effects

[0028] 1. Strong continuous operation capability: The wastewater sludge and residue generated during the purification process are automatically discharged from the blower outlet under the drive of the water circulation system and flow into the wastewater filter tank for filtration treatment. There is no need to stop the machine for cleaning and sewage discharge, which completely solves the core defect of existing equipment that "stopping the machine affects production". It can achieve continuous real-time purification operation under continuous operation conditions, which greatly improves the production efficiency of enterprises and has outstanding practicality.

[0029] 2. Excellent purification effect: After multiple experiments, the device has been verified that when purifying black smoke from diesel and waste engine oil combustion, the exhaust gas has no visible black smoke and no obvious oil odor, fully complying with relevant national emission standards; when purifying dust, there are no fine particulate dust particles in the exhaust gas, the purification is thorough and the efficiency is far higher than that of smoke and dust purification; when purifying coal combustion smoke, alkaline substances (such as sodium hydroxide) are added to the water circulation loop to neutralize sulfur dioxide, further improving the purification effect, adapting to the purification needs of various types of pollutants, and the technical effect is significant.

[0030] 3. Simple and practical structure: The core components of the equipment only include a fan, various purification tanks (smoke and dust purification tanks, wastewater filter tanks, dust filter tanks), purification plates, and nozzles. There are no complex and precision components, resulting in low manufacturing costs. At the same time, the equipment is easy to install and maintain. It only needs to periodically discharge the deposited debris through the wastewater drain valve, which greatly reduces the operating costs of enterprises and has good prospects for industrial application.

[0031] 4. Water-saving and environmentally friendly: The barrel-shaped filter cotton inside the wastewater filter can effectively purify wastewater, realize the recycling of clean water, and significantly reduce water consumption; moreover, there is no wastewater discharge during the entire purification process, which effectively avoids secondary pollution, meets current environmental control requirements, and has outstanding environmental benefits.

[0032] 5. Wide applicability: It is widely applicable to the purification needs of various scenarios, including diesel / waste engine oil black smoke, industrial coal combustion dust, metallurgical plant and die-casting plant dust, catering fumes, construction dust, furniture factory dust, and various odors; by adding oil stain cleaning agents or alkaline substances to the water circulation loop, the purification function can be flexibly expanded to adapt to different types of pollutants, effectively solving the problem of poor compatibility of existing equipment. Attached Figure Description

[0033] Figure 1 : A schematic diagram of the structure of the pre-filtered smoke / dust / odor purification device of the present invention;

[0034] Figure 2 : A schematic diagram of the structure of the single-chamber type smoke / odor purification device of the present invention;

[0035] Figure 3 : A schematic diagram of the structure of the dual-tank series smoke / odor purification device of the present invention;

[0036] Figure 4 : A schematic diagram of the structure of the dust purification device including pre-filtration in this invention;

[0037] Explanation of markings in the diagram:

[0038] 1. 1(1), 1(2) - Smoke and dust purification bucket; 2. 2(1), 2(2) - Fan; 3 - Wastewater filter bucket; 4 - Dust filter bucket; 5 - Dust, smoke; 6 - Air inlet; 7 - Nozzle; 8 - Purification plate (including filter screen inside the dust filter bucket); 9 - Water level controller (float inlet valve); 10 - Air outlet; 11 - Wastewater discharge valve; 12 - Air inlet pipe; 13 - Water pipe; 14 - Barrel-shaped filter cotton; 15 - Barrel-shaped mesh support; 16 - Pipe; 17 - Power supply; 18 - Water, aqueous solution; 19 - Micropores; 20 - Bubbles;

[0039] <1> - Microporous plate (a component of purification plates / filters); <2> - Plate and frame support (component of purification plates / filters); <3> -Purification panel / filter (made of...) <1> Microplate installed <2> (The middle part of the plate frame support is formed). Detailed Implementation

[0040] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Figure 1 , Figure 2 , Figure 3 , Figure 4 The schematic diagram illustrates the structure of the smoke / dust / odor purification device according to four embodiments of the present invention. The following embodiments are only used to illustrate the present invention in detail and are not intended to limit the scope of protection of the present invention.

[0041] Example 1: A purification device containing pre-filtered smoke / dust / odor (refer to) Figure 1(Installation) This device consists of 1 fan 2, 1 dust filter 4, 1 fume purification 1, and 1 wastewater filter 3. The specific installation and operation details of each component are as follows:

[0042] Dust Filter Can 4: A sealed canister made of stainless steel, with an air inlet, filter screen, and air outlet located on its side walls and top, respectively. The air inlet is located at the top of the canister, flush with the filter screen. The filter screen self-cleans using vibration and airflow generated by the fan, effectively preventing dust accumulation and clogging. The filter screen is located below the air outlet, 100mm away. Its structure is identical to that of the purification plate 8, consisting of a microporous plate. <1> and plate frame bracket <2> The microporous plate has a pore size of 0.3mm-0.4mm. The air outlet of the dust filter 4 is sealed to the air inlet of the dust purification 1 through the pipe 16. The pipe 16 is made of corrosion-resistant rubber to ensure sealing performance and prevent gas leakage.

[0043] Dust purification bin 1: A sealed bin made of stainless steel, with an air inlet 6, an air outlet 10, a purification plate 8, a nozzle 7, and a wastewater discharge valve 11 respectively located on its side wall, top, and bottom. The air inlet 6 is located at the bottom of the bin, below the lowest purification plate 8. Multiple layers of purification plates 8 are stacked vertically inside the bin at intervals of 150mm-230mm, with microporous plates having a pore size of 0.3mm-0.4mm. The nozzle 7 is fixedly installed below the lowest purification plate 8 and uses a water gun nozzle for recirculating or injecting clean water to improve the purification effect. There is only one wastewater discharge valve 11 at the bottom of the bin, which is a ball valve for easy operation. The air outlet 10 of the dust purification bin 1 is sealed to the air inlet of the fan 2 through a pipe 16 to ensure smooth gas flow.

[0044] Wastewater filter bucket 3: Located directly below the air outlet of blower 2, it is made of plastic and its structure is completely the same as that of the wastewater filter bucket in Embodiment 1. Inside the bucket, a barrel-shaped mesh partition bracket 15, a barrel-shaped filter cotton 14, and a water level controller 9 (float inlet valve) are fixedly installed. The water valve at the bottom of the wastewater filter bucket 3 is sealed and connected to the nozzle 7 at the bottom of the dust purification bucket 1 through a water pipe 13, forming a stable water circulation loop. The water pipe 13 is made of PVC pipe, which has the advantages of corrosion resistance and not easy aging, thus extending the service life of the equipment.

[0045] During operation: First, connect the water level controller 9 to the external water source, fill the wastewater filter tank 3 and the dust purification tank 1 with clean water, and then start the blower 2; the blower 2 generates negative pressure, and external waste oil fumes, dust, and pungent odors enter from the air inlet of the dust filter tank 4. After being filtered by the filter screen, large dust particles are trapped and deposited inside the dust filter tank 4, while fine dust particles, fumes, and odors enter the bottom of the dust purification tank 1 from the air outlet of the dust filter tank 4 through the pipe 16; the fumes, pungent odors, and fine dust particles move vertically... The gas flows upwards, passing through multiple layers of purification plates 8 for refinement, and repeatedly comes into full contact with water or aqueous solution to separate smoke, dust, odors, and gases, thus completing the purification operation. The wastewater, sludge, residue, and purified gas generated during the purification process enter the fan 2 under the driving force of water circulation. The purified gas is discharged through the outlet of the fan 2 in compliance with standards. The wastewater, sludge, and residue flow into the wastewater filter bucket 3 below for filtration. The filtered clean water flows back to the nozzle 7 through the water pipe 13, realizing continuous circulation purification operation.

[0046] Experiments have verified that the gas purified by this device contains no fine particulate dust, pungent odors, or obvious oily odors. The purification effect is stable and continuous, operating in real-time without blockages or malfunctions. Example 2: Single-barrel smoke / odor purification device (refer to...) Figure 2 (Installation) This device consists of a fan 2, a dust purification tank 1 sealed to the air inlet of the fan 2, and a wastewater filter tank 3 located directly below the air outlet of the fan 2. The specific installation and operation details of each component are as follows:

[0047] Smoke and Dust Purification Barrel 1: A sealed barrel made of stainless steel, with an air inlet 6, an air outlet 10, a nozzle 7, a wastewater drain valve 11, and purification plates 8 respectively located on its side walls, top, and bottom. The air inlet 6 is located at the bottom of the barrel, below the lowest purification plate 8, to introduce external smoke and dust. The air outlet 10 is located at the top of the barrel and is sealed to the air inlet of the fan 2 via a pipe 16. Multiple layers of purification plates 8 are stacked vertically inside the barrel at intervals of 150mm-230mm. The purification plates 8 are made of microporous plates. <1> and plate frame bracket <2> Composition, microplate <1> Fixed installation on plate frame bracket <2> In the middle section, the aperture is 0.3mm-0.4mm; the nozzle 7 is fixedly installed below the lowest purification plate 8, and uses a water gun nozzle for recirculating clean water or injecting clean water; the wastewater discharge valve 11 is only led out from the bottom of the tank, and uses a ball valve for periodically discharging the debris deposited in the tank.

[0048] Wastewater filter bucket 3: The bucket body is made of plastic and has an open opening. Inside the bucket, a bucket-shaped mesh support 15, a bucket-shaped filter cotton 14, and a water level controller 9 are fixedly installed. The water level controller 9 uses a float inlet valve to automatically control the water level in the bucket, realize automatic water replenishment, and ensure stable water circulation. The bucket-shaped filter cotton 14 is nested inside the bucket-shaped mesh support 15 and is used to filter sludge and debris in the wastewater. A water valve is led out from the bottom of the wastewater filter bucket 3 and is sealed and connected to the nozzle 7 at the bottom of the dust purification bucket 1 through a water pipe 13 to form a stable water circulation loop.

[0049] During operation: First, connect the water level controller 9 to the external water source, fill the wastewater filter tank 3 and the dust purification tank 1 with clean water, then add an appropriate amount of oil stain cleaning agent (preferably a neutral oil stain cleaning agent to avoid corrosion of the equipment) and stir evenly before starting the blower 2; the operation of the blower 2 generates negative pressure, and the external waste oil fumes enter the dust purification tank 1 from the air inlet 6, surging upwards in a vertical direction, passing through the multiple layers of purification plates 8 for refinement, and at the same time, fully and repeatedly contacting water or aqueous solution to achieve separation of dust and gas, completing the purification operation; the wastewater sludge formed during the purification process and the purified gas enter the blower 2 under the driving action of water circulation, and the purified gas is directly discharged through the air outlet of the blower 2 in compliance with standards, while the wastewater sludge flows into the wastewater filter tank 3 below; after the wastewater sludge is filtered by the barrel-shaped filter cotton 14, the impurities are intercepted, and the filtered clean water flows back to the nozzle 7 through the water pipe 13 to achieve continuous circulation purification.

[0050] Experiments have verified that when the device purifies the black smoke produced by diesel / waste engine oil combustion, the exhaust gas has no visible black smoke and no obvious oil odor, the purification effect is good, it can operate continuously in real time, and the operating cost is significantly reduced compared with the existing spray water purifier.

[0051] Example 3: Dual-tank series smoke / odor purification device (refer to) Figure 3 (Installation) This device is suitable for various high-concentration smoke / odor purification scenarios. It consists of two fans 2(1) and 2(2), two smoke purification tanks 1(1) and 1(2), and one wastewater filter tank 3. The structure and connection relationship of each component are as follows:

[0052] Dust purification barrels 1(1) and 1(2): Both are sealed barrels made of stainless steel, and their structures are completely consistent with those of dust purification barrel 1 in Example 1. Their side walls, tops and bottoms are respectively provided with air inlets 6, air outlets 10, purification plates 8, nozzles 7 and wastewater discharge valves 11. The air inlet 6 is located at the bottom of the barrel, below the lowest purification plate 8. The air outlet 10 is located at the top of the barrel. Multiple purification plates 8 are stacked vertically inside the barrel at intervals of 150mm-230mm, and the micro-perforated plate has a hole diameter of 0.3mm-0.4mm. The nozzles 7 are fixedly installed below the lowest purification plate 8 and are water gun nozzles used for recirculating clean water or injecting clean water. Only one wastewater discharge valve 11 is led out from the bottom of the barrel and is a ball valve, which is easy to operate.

[0053] Connection relationship between the blower and the dust purification barrel: Both blowers 2(1) and 2(2) are centrifugal blowers. The air inlet of blower 2(1) is sealed to the air outlet of dust purification barrel 1(1) through pipe 16. The air outlet of blower 2(1) is sealed to the air inlet of dust purification barrel 1(2) through pipe 16. The air inlet of blower 2(2) is sealed to the air outlet of dust purification barrel 1(2) through pipe 16. The air outlet of blower 2(2) faces the wastewater filter barrel 3 below to ensure that the wastewater sludge flows smoothly into the filter barrel and avoids accumulation.

[0054] Wastewater filter bucket 3: Located directly below the air outlet of blower 2 (2), it is made of plastic material and its structure is completely consistent with the wastewater filter bucket in Example 1; it adopts an open bucket structure, and a bucket-shaped mesh partition bracket 15, a bucket-shaped filter cotton 14, and a water level controller 9 are fixedly installed inside the bucket. The water level controller 9 adopts a float inlet valve to automatically control the water level in the bucket and realize automatic water replenishment; the bucket-shaped filter cotton 14 is nested inside the bucket-shaped mesh partition bracket 15 to filter sludge and debris in the wastewater; a water valve is led out from the bottom of the wastewater filter bucket 3 and is sealed and connected to the bottom nozzle 7 of the dust purification bucket 1 (1) through the water pipe 13 to form a stable water circulation loop.

[0055] During operation: First, connect the water level controller 9 to the external water source, fill the wastewater filter tank 3 and the two dust purification tanks 1(1) and 1(2) with clean water, add an appropriate amount of oil stain cleaning agent and stir evenly, then start the two fans 2(1) and 2(2) at the same time; the operation of the fans generates negative pressure, and the external waste oil fumes enter from the air inlet 6 of the dust purification tank 1(1), are refined multiple times by the multi-layer purification plates 8 inside the tank, and are thoroughly purified by repeated contact with water or aqueous solution, and then sent into the dust purification tank 1(2) by the fan 2(1); the dust in The dust purification bin 1(2) is refined multiple times by multiple layers of purification plates 8 and comes into full and repeated contact with water or aqueous solution to achieve separation of dust and gas and complete deep purification. The wastewater sludge and purified gas formed during the purification process enter the fan 2(2) under the driving action of water circulation. The purified gas is discharged through the outlet of the fan 2(2) in compliance with standards. The wastewater sludge flows into the wastewater filter bin 3 below for filtration treatment. The filtered clean water flows back to the nozzle 7 of the dust purification bin 1(1) through the water pipe 13 to achieve continuous circulation dust purification.

[0056] This implementation method is suitable for various types of smoke / odor purification. Experimental verification shows that it has an excellent purification effect on waste oil smoke. After purification, the exhaust gas has no visible black smoke and no obvious oil odor, and the equipment operates stably and continuously.

[0057] Example 4: Dust purification device with pre-filtration (refer to) Figure 4 Install)

[0058] Experimental data shows that purifying particulate matter (PM) is far less difficult than purifying fumes using the same equipment, with purification efficiency several times higher. The core reason is that particulate matter consists mostly of non-sticky solid particles, easily trapped and filtered, while fumes often contain oil and other gas components, making them highly sticky and difficult to separate. Therefore, the device in this embodiment does not require a complex structure to achieve efficient purification of various types of dust. It consists of one fan (2), one dust filter (4), one fume purification tank (1), and one wastewater filter (3). The specific installation and operating details of each component are as follows:

[0059] Dust Filter Can 4: A sealed canister made of stainless steel, with an air inlet, filter screen, and air outlet located on its side walls and top, respectively. The air inlet is located at the top of the canister, flush with the filter screen. The filter screen is self-cleaning thanks to the vibration and airflow generated by the fan, preventing dust accumulation and clogging. The filter screen is located below the air outlet, 100mm away from the outlet. Its structure is identical to that of the purification plate 8, consisting of a microporous plate. <1> and plate frame bracket <2> The microporous plate has a pore size of 0.3mm-0.4mm; the air outlet of the dust filter 4 is sealed to the air inlet 6 of the dust purification 1 through the pipe 16 to ensure gas flow without leakage.

[0060] Dust purification tank 1: A sealed tank made of stainless steel, with a structure completely identical to the dust purification tank 1 in Example 1; its side walls, top, and bottom are respectively equipped with an air inlet 6, an air outlet 10, a purification plate 8, a nozzle 7, and a wastewater discharge valve 11; the air inlet 6 is located at the bottom of the tank, below the lowest purification plate 8; multiple layers of purification plates 8 are stacked vertically inside the tank at intervals of 150mm-230mm, with microporous plates having a hole diameter of 0.3mm-0.4mm; the nozzle 7 is fixedly installed below the lowest purification plate 8 for returning clean water; only one wastewater discharge valve 11 is led out from the bottom of the tank; the air outlet 10 of the dust purification tank 1 is sealed to the air inlet of the fan 2 through a pipe 16 to ensure smooth discharge of wastewater and residue. Wastewater filter bucket 3: Located directly below the air outlet of the blower 2, it is made of plastic and its structure is completely the same as that of the wastewater filter bucket in Example 1; a barrel-shaped mesh bracket 15, a barrel-shaped filter cotton 14, and a water level controller 9 (float inlet valve) are fixedly installed inside the bucket; the water valve at the bottom of the wastewater filter bucket 3 is connected to the nozzle 7 at the bottom of the dust purification bucket 1 through a water pipe 13 to form a stable water circulation loop.

[0061] During operation: First, connect the water level controller 9 to the external water source, fill the wastewater filter tank 3 and the dust purification tank 1 with clean water, and then start the fan 2. The operation of the fan 2 generates negative pressure, and external dust enters from the air inlet of the dust filter tank 4. After being filtered by the filter screen, large dust particles are trapped and deposited in the dust filter tank 4, while fine dust particles enter the bottom of the dust purification tank 1 through the pipe 16 from the air outlet of the dust filter tank 4. The fine dust particles surge upwards vertically and are refined by multiple layers of purification plates 8. At the same time, they come into full and repeated contact with water or aqueous solution to separate dust and gas, thus completing the purification operation. The wastewater residue and purified gas formed during the purification process enter the fan 2 under the driving action of water circulation. The purified gas is discharged through the air outlet of the fan 2 in compliance with standards, and the wastewater residue flows into the wastewater filter tank 3 below for filtration. The filtered clean water flows back to the nozzle 7 through the water pipe 13 to achieve continuous circulation dust purification.

[0062] Experiments have verified that the gas purified by this device contains no fine particulate dust, the filter screen is not clogged, the purification effect is stable and continuous, and the purification effect on construction dust is thorough, further confirming the experimental conclusion that dust is easier to purify than smoke.

[0063] In summary, this invention provides a smoke / dust / odor purification device that, when purifying black smoke generated from diesel and waste engine oil combustion, produces exhaust gas without visible black smoke and a noticeable oily odor; when purifying dust, the emitted gas contains no fine particulate dust, demonstrating excellent purification effect and efficiency far exceeding that of smoke purification; simultaneously, it achieves continuous operation under continuous operating conditions, offering comprehensive functions, ease of use, and strong practicality. It effectively solves the core defects of existing technologies, possessing significant technological advancement and practical value. The above descriptions are merely specific embodiments of this invention. For those skilled in the art, various modifications and improvements can be made based on the technical solution of this invention without departing from the concept of this invention, and all such modifications and improvements fall within the protection scope of this invention.

Claims

1. A smoke / dust / odour purification device, characterised in that, The system includes a dust filter, a fan, a fume purification tank, and a wastewater filter. The outlet of the dust filter is sealed to the inlet of the fume purification tank via a pipe, and the outlet of the fume purification tank is sealed to the inlet of the fan. The wastewater filter is located below the outlet of the fan. The bottom of the wastewater filter is sealed to the nozzle at the bottom of the fume purification tank via a water pipe, forming a closed-loop water circulation structure. The dust filter contains a filter screen, the fume purification tank contains multiple layers of purification plates, and the wastewater filter contains barrel-shaped filter cotton and a water level controller.

2. The apparatus of claim 1, wherein, The multi-layer purification plates inside the dust purification bin are stacked vertically at intervals of 150mm-230mm; each purification plate consists of a microporous plate and a plate frame support, with the microporous plate fixed in the middle of the plate frame support, and the microporous plate having a hole diameter of 0.3mm-0.4mm.

3. The apparatus of claim 1, wherein, The dust purification bins are configured as two or more, with multiple dust purification bins connected in series, and adjacent dust purification bins are sealed together by a fan and a pipe.

4. The apparatus of claim 1, wherein, Wastewater, sludge, and residue generated during the purification process are discharged from the blower outlet into the wastewater filter tank under the drive of water circulation. The filtered clean water flows back to the nozzle through the water pipe, achieving continuous purification without stopping the machine.

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