A multi-stage filtration and purification device for kiln exhaust gas

Abstract

This utility model proposes a multi-stage filtration and purification device for kiln exhaust gas, relating to the field of filtration and purification technology. It includes a spray assembly, a dust collection tank located below the filter screen, and a vibrating plate inside the tank for mixing dust and water. A pressure plate for weight detection is fixedly installed inside the vibrating plate. The advantages of this utility model are: a dust collection tank is located at the bottom of the dust collector for removing dust from kiln exhaust gas, and a water spray assembly is located at the top of the dust collector. The water sprayed from the assembly cleans the filter screen while simultaneously mixing the filtered dust with the cleaned water inside the tank. The vibrating plate accelerates the mixing of dust and water, causing it to solidify into solid particles, reducing the dust's free movement, preventing it from floating around, reducing the difficulty of dust treatment, and improving the convenience of dust treatment.

Description

Technical Field

[0001] This utility model relates to the field of filtration and purification technology, and in particular to a multi-stage filtration and purification device for kiln exhaust gas. Background Technology

[0002] Kiln exhaust gas is the waste gas produced during the production process of kilns (such as in the ceramics, metallurgy, and chemical industries) from fuel combustion or material reaction. Its composition is complex and may contain dust and harmful gases (such as SO2 and NO). x Furnace exhaust gases (containing pollutants such as carbon dioxide, CO, HCl, and heavy metals) and volatile organic compounds (VOCs) can have a significant impact on the natural environment, causing natural disasters such as acid rain and affecting both the environment and human health. As people's living standards improve, environmental protection is receiving increasing attention, and kiln exhaust gases must be purified by filtration and purification devices to meet emission standards before being released.

[0003] However, existing filtration and purification devices, after filtering large-particle dust inside the kiln exhaust gas, are inconvenient to handle because the dust tends to disperse easily during the process due to its characteristics. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a multi-stage filtration and purification device for kiln exhaust gas, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a multi-stage filtration and purification device for kiln exhaust gas, including a cooling air guide pipe for cooling the kiln exhaust gas. A dust collector is fixedly installed at one end of the cooling air guide pipe to separate and filter large-particle dust inside the kiln exhaust gas. A purification tower is fixedly installed at one end of the dust collector to purify harmful gases inside the kiln exhaust gas. A filter screen for filtering the kiln exhaust gas is fixedly installed inside the dust collector. A spray assembly for cleaning the filter screen is provided above it. A dust collection tank is provided below the filter screen. An oscillating plate for mixing dust and water is provided inside the treatment tank. A pressure plate for weight detection is fixedly installed inside the oscillating plate. The pressure plate is signal-connected to a microcontroller unit for signal processing and automatic control. The microcontroller unit is signal-connected to a sealing plate for sealing the dust collector.

[0006] Preferably, in any of the above embodiments, the cooling air duct is provided with a water-cooled circulation pipe for water cooling of the kiln exhaust gas, one end of the dust collector is provided with an air inlet and the other end with an air outlet, and the purification tower is provided with a chemical treatment module, an adsorption module and a monitoring module.

[0007] The above technical solution involves: a water-cooled circulation pipe installed inside the cooling air duct to cool the high-temperature kiln exhaust gas through cold water circulation, providing temperature-suitable exhaust gas conditions for subsequent dust removal and purification processes, ensuring the safe operation of downstream equipment. The cooled exhaust gas is introduced into the inlet of one end of the dust collector, where internal filter plates intercept large-particle dust. The purified exhaust gas enters the purification tower from the outlet. The purification tower is equipped with a chemical treatment module, an adsorption module, and a monitoring module for further treatment of the dust-removed exhaust gas. The chemical treatment module removes harmful gases (such as SO2 and NO) through chemical reactions. x The adsorption module uses materials such as activated carbon to adsorb volatile organic compounds (VOCs), and the monitoring module monitors various indicators of the purified exhaust gas in real time to ensure that emissions meet standards.

[0008] Preferably, in any of the above embodiments, the filter screen is located between the air inlet and the air outlet, and the spray assembly includes a water tank for storing water, a high-pressure water pump for providing spray power, and a spray nozzle. The water tank is located on one side of the dust collector, and a high-pressure water pump fixed to the top of the dust collector is fixedly installed on the top of the water tank. A spray nozzle fixed inside the dust collector is fixedly installed on one end of the high-pressure water pump, and the spray nozzle is located above the filter screen.

[0009] The above technical solution involves a high-pressure water pump pressurizing water in a tank and spraying it through nozzles to clean the filter screen, preventing dust from clogging the mesh and maintaining filtration efficiency. The spraying assembly includes a water tank, a high-pressure water pump, and nozzles. The high-pressure water pump delivers water from the tank to the nozzles, forming a high-pressure water mist that covers the surface of the filter screen, dissolving and washing away the attached dust. The dust then falls into the treatment tank below with the water flow, achieving automatic cleaning of the filter screen.

[0010] Preferably, in any of the above embodiments, the processing tank is movably connected to the bottom of the dust collection box, and the interior of the processing tank is provided with a vibration groove for fixing a vibration plate.

[0011] The above technical solution is adopted: the treatment tank is movably connected to the bottom of the dust collector to receive the dust and water mixture after the filter screen is cleaned; the internal oscillation tank has a fixed oscillation plate, and the dust-carrying plate is driven to oscillate by an oscillation motor to accelerate the mixing of dust and water to form a solid-liquid mixture, reduce dust dispersion, and the safety spring buffers the oscillation impact to prevent structural damage.

[0012] Preferably, in any of the above embodiments, the oscillating plate includes an oscillating motor connected to a microcontroller unit, a dust-carrying plate for supporting dust, and a safety spring for buffering. The oscillating motor is fixedly installed at one end of the processing tank, and the output end of the oscillating motor is fixedly installed with the dust-carrying plate that moves inside the processing tank. A safety spring is fixedly installed at one end of the dust-carrying plate and is fixedly installed inside the processing tank. A waterproof sealing strip is provided between the dust-carrying plate and the processing tank.

[0013] The above technical solution is adopted: the oscillating motor of the oscillating plate is controlled by the micro-control unit, which drives the dust-carrying plate to reciprocate, so that the dust and water are fully mixed and condensed. The waterproof sealing strip between the dust-carrying plate and the treatment tank prevents the leakage of the mixture. The safety spring absorbs the oscillation energy, avoids rigid collisions, and extends the service life of the equipment.

[0014] Preferably, in any of the above embodiments, the pressure plate includes a pressure sensor connected to the microcontroller unit and a pressure bearing plate that bears pressure. The pressure sensor is fixedly installed inside the dust-carrying plate, and the pressure bearing plate is fixedly installed at the detection end of the pressure sensor. The pressure bearing plate is located inside the dust-carrying plate, and a waterproof sealing ring is provided between the pressure bearing plate and the dust-carrying plate.

[0015] The above technical solution is adopted: the pressure sensor of the bearing plate detects the weight of the solid-liquid mixture carried by the dust-carrying plate in real time, the bearing plate converts the weight signal into an electrical signal and transmits it to the microcontroller unit, and the waterproof sealing ring ensures that the pressure sensor works stably in a humid environment and avoids short circuits.

[0016] Preferably, in any of the above embodiments, the sealing plate includes a pneumatic telescopic rod connected to the microcontroller unit signal and a sealing baffle for sealing the dust collection box. The pneumatic telescopic rod is fixedly installed inside the dust collection box, and a sealing baffle that moves inside the dust collection box is fixedly installed at one end of the pneumatic telescopic rod. The sealing baffle is located on one side of the dust-carrying plate.

[0017] The above technical solution is adopted: the pneumatic telescopic rod of the sealing plate is driven by the micro-control unit to move the sealing baffle. When the load plate detects that the weight of the mixture reaches the set threshold, the sealing baffle opens to allow the mixture to be discharged from the treatment tank. After the treatment is completed, it closes to maintain the internal sealing of the dust collector and prevent exhaust gas leakage.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. A dust collection tank is installed at the bottom of the dust collector box for removing dust from kiln exhaust gas, and a water spraying assembly is installed at the top of the dust collector box. The water sprayed by the assembly washes the filter screen that filters the dust, and at the same time, the filtered dust and the washing water mix inside the treatment tank. A vibrating plate is used to accelerate the mixing of dust and water, causing them to solidify into solid particles, reducing the freedom of dust, preventing dust from floating around, reducing the difficulty of dust treatment, and improving the convenience of dust treatment.

[0020] 2. A pressure plate is installed inside the vibrating plate to detect the mixed dust solids. Based on the detection data, the sealing plate is moved to fix the mixed dust out of the treatment tank, which facilitates continuous dust treatment and improves the convenience of dust treatment in exhaust gas.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of the processing tank according to an embodiment of the present utility model;

[0025] Figure 3 This is a cross-sectional structural diagram of the dust collector according to an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the processing tank according to an embodiment of the present utility model;

[0027] The components are: 1-cooling air duct, 2-dust collector, 3-purification tower, 4-filter screen, 5-spray assembly, 51-water tank, 52-high pressure water pump, 53-spray head, 6-treatment tank, 7-vibrating plate, 71-vibrating motor, 72-dust carrier plate, 73-safety spring, 8-pressure carrier plate, 81-pressure sensor, 82-pressure bearing plate, 9-sealing plate, 91-pneumatic telescopic rod, 92-sealing baffle. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0029] like Figure 1-4 As shown in the figure, a multi-stage filtration and purification device for kiln exhaust gas according to an embodiment of the present invention includes a cooling air guide pipe 1 for cooling the kiln exhaust gas. A dust collector 2 for separating and filtering large-particle dust inside the kiln exhaust gas is fixedly installed at one end of the cooling air guide pipe 1. A purification tower 3 for purifying harmful gases inside the kiln exhaust gas is fixedly installed at one end of the dust collector 2. A filter screen plate 4 for filtering the kiln exhaust gas is fixedly installed inside the dust collector 2. A spray assembly 5 for cleaning the filter screen plate 4 is provided above the filter screen plate 4. A dust collection tank 6 is provided below the filter screen plate 4. An oscillating plate 7 for mixing dust and water is provided inside the treatment tank 6. A pressure plate 8 for weight detection is fixedly installed inside the oscillating plate 7. The pressure plate 8 is signal-connected to a microcontroller unit for signal processing and automatic control. The microcontroller unit is signal-connected to a sealing plate 9 for sealing the dust collector 2.

[0030] Preferably, the cooling air duct 1 is equipped with a water-cooled circulation pipe for water cooling of the kiln exhaust gas, the dust collector 2 has an air inlet at one end and an air outlet at the other end, and the purification tower 3 is equipped with a chemical treatment module, an adsorption module and a monitoring module.

[0031] The above technical solution is adopted as follows: A water-cooled circulation pipe is installed inside the cooling air duct 1 to cool the high-temperature kiln exhaust gas through cold water circulation, providing temperature-suitable exhaust gas conditions for subsequent dust removal and purification processes, ensuring the safe operation of downstream equipment. The cooled exhaust gas is introduced into the inlet of the dust collector 2, and the internal filter screen 4 intercepts large-particle dust. The purified exhaust gas enters the purification tower 3 from the outlet. The purification tower 3 is equipped with a chemical treatment module, an adsorption module, and a monitoring module for further treatment of the dust-removed exhaust gas. The chemical treatment module removes harmful gases (such as SO2 and NO) through chemical reactions. x The adsorption module uses materials such as activated carbon to adsorb volatile organic compounds (VOCs), and the monitoring module monitors various indicators of the purified exhaust gas in real time to ensure that emissions meet standards.

[0032] Preferably, in any of the above embodiments, the filter screen 4 is located between the air inlet and the air outlet, and the spray assembly 5 includes a water tank 51 for storing water, a high-pressure water pump 52 for providing spray power, and a spray nozzle 53 for spraying water. The water tank 51 is located on one side of the dust collection box 2, and the high-pressure water pump 52 is fixedly installed on the top of the water tank 51 and fixedly installed on the top of the dust collection box 2. The spray nozzle 53 is fixedly installed on one end of the high-pressure water pump 52 and fixedly installed inside the dust collection box 2. The spray nozzle 53 is located above the filter screen 4.

[0033] The above technical solution is adopted: the high-pressure water pump 52 pressurizes the water in the water tank 51 and sprays it through the nozzle 53 to clean the filter screen plate 4, prevent dust from clogging the mesh and maintain the filtration efficiency. The spraying assembly 5 includes a water tank 51, a high-pressure water pump 52 and a nozzle 53. The high-pressure water pump 52 delivers the water in the water tank 51 to the nozzle 53 to form a high-pressure water mist that covers the surface of the filter screen plate 4, dissolving and washing away the attached dust, so that the dust falls into the treatment tank 6 below with the water flow, thereby realizing the automatic cleaning of the filter screen plate 4.

[0034] Preferably, in any of the above embodiments, the treatment tank 6 is movably connected to the bottom of the dust collection box 2, and the interior of the treatment tank 6 is provided with an oscillation groove for fixing the oscillation plate 7.

[0035] The above technical solution is adopted: the treatment tank 6 is movably connected to the bottom of the dust collector 2 to receive the dust and water mixture after the filter screen 4 is cleaned. The internal oscillation tank fixes the oscillation plate 7, and the dust carrier plate 72 is driven to oscillate by the oscillation motor 71 to accelerate the mixing of dust and water to form a solid-liquid mixture, reduce dust dispersion, and the safety spring 73 buffers the oscillation impact to prevent structural damage.

[0036] Preferably, in any of the above embodiments, the oscillating plate 7 includes an oscillating motor 71 connected to a microcontroller unit, a dust-carrying plate 72 for carrying dust, and a safety spring 73 for buffering. The oscillating motor 71 is fixedly installed at one end of the processing tank 6. The output end of the oscillating motor 71 is fixedly installed with the dust-carrying plate 72, which is movable inside the processing tank 6. The safety spring 73 is fixedly installed at one end of the dust-carrying plate 72 and is fixedly installed inside the processing tank 6. A waterproof sealing strip is provided between the dust-carrying plate 72 and the processing tank 6.

[0037] The above technical solution is adopted: the oscillation motor 71 of the oscillation plate 7 is controlled by the micro-control unit, which drives the dust-carrying plate 72 to reciprocate, so that the dust and water are fully mixed and condensed. The waterproof sealing strip between the dust-carrying plate 72 and the treatment tank 6 prevents the leakage of the mixed liquid. The safety spring 73 absorbs the oscillation energy, avoids rigid collisions, and extends the service life of the equipment.

[0038] Preferably, in any of the above embodiments, the pressure plate 8 includes a pressure sensor 81 connected to the microcontroller unit and a pressure bearing plate 82 that bears pressure. The pressure sensor 81 is fixedly installed inside the dust-carrying plate 72, and the pressure bearing plate 82 is fixedly installed at the detection end of the pressure sensor 81. The pressure bearing plate 82 is located inside the dust-carrying plate 72, and a waterproof sealing ring is provided between the pressure bearing plate 82 and the dust-carrying plate 72.

[0039] The above technical solution is adopted: the pressure sensor 81 of the pressure plate 8 detects the weight of the solid-liquid mixture carried by the dust plate 72 in real time, the pressure plate 82 converts the weight signal into an electrical signal and transmits it to the microcontroller unit, and the waterproof sealing ring ensures that the pressure sensor 81 works stably in a humid environment and avoids short circuits.

[0040] Preferably, in any of the above schemes, the sealing plate 9 includes a pneumatic telescopic rod 91 connected to the microcontroller unit signal and a sealing baffle 92 for sealing the dust collection box 2. The pneumatic telescopic rod 91 is fixedly installed inside the dust collection box 2, and a sealing baffle 92 that moves inside the dust collection box 2 is fixedly installed at one end of the pneumatic telescopic rod 91. The sealing baffle 92 is located on one side of the dust-carrying plate 72.

[0041] Using the above technical solution: the pneumatic telescopic rod 91 of the sealing plate 9 is driven by the micro-control unit to move the sealing baffle 92. When the pressure plate 8 detects that the weight of the mixture reaches the set threshold, the sealing baffle 92 opens, allowing the mixture to be discharged from the processing tank 6. After processing, it closes to maintain the internal sealing of the dust collector 2 and prevent exhaust gas leakage.

[0042] The working principle of this utility model is as follows: A multi-stage filtration and purification device for kiln exhaust gas.

[0043] The high-temperature exhaust gas is first cooled by the water-cooled circulation pipe of the cooling duct 1 before entering the dust collection box 2. The filter screen 4 inside the dust collection box 2 intercepts large-diameter dust particles. Simultaneously, the high-pressure water pump 52 of the spray assembly 5 pressurizes the water in the water tank 51 and sprays it through the nozzles 53 to clean the filter screen 4, causing the dust to fall into the treatment tank 6 with the water flow. The oscillating motor 71 inside the treatment tank 6 drives the dust-carrying plate 72 to oscillate, mixing the dust and water into a solid-liquid mixture. The pressure sensor 81 of the pressure plate 8 monitors the weight in real time. When the threshold is reached, the microcontroller unit controls the pneumatic telescopic rod 91 of the sealing plate 9 to push the sealing baffle 92 open, discharging the mixture. The exhaust gas after dust removal enters the purification tower 3, where it undergoes chemical treatment and adsorption to remove harmful gases and VOCs. The monitoring module monitors the emissions in real time to ensure compliance with emission standards.

[0044] Compared with the prior art, the present invention has the following advantages:

[0045] 1. A treatment tank 6 for collecting dust is set at the bottom of the dust collector box 2 for removing dust from the kiln exhaust gas, and a water spraying assembly 5 is set at the top of the dust collector box 2. The water sprayed by the spraying assembly 5 washes the filter screen plate 4 that filters the dust, and at the same time, the filtered dust and the washed water are mixed inside the treatment tank 6. The vibrating plate 7 is used to accelerate the mixing of dust and water, so that it solidifies into solid particles, reduces the degree of freedom of dust, prevents dust from floating around, reduces the difficulty of dust treatment, and improves the convenience of dust treatment.

[0046] 2. A pressure plate 8 is installed inside the vibrating plate 7 to detect the mixed dust solids. Based on the detection data, the sealing plate 9 is controlled to move. By controlling the sealing plate 9, the mixed dust is fixedly discharged out of the treatment tank 6, which facilitates the continuous treatment of dust in the treatment tank 6 and improves the convenience of dust treatment in exhaust gas.

Claims

1. A multi-stage filtration and purification device for kiln exhaust gas, comprising a cooling air guide pipe (1) for cooling the kiln exhaust gas, a dust collector (2) for separating and filtering large-particle dust inside the kiln exhaust gas being fixedly installed at one end of the cooling air guide pipe (1), and a purification tower (3) for purifying harmful gases inside the kiln exhaust gas being fixedly installed at one end of the dust collector (2), characterized in that: The dust collector (2) is fixedly installed with a filter screen plate (4) for filtering kiln exhaust gas. A spray assembly (5) for cleaning the filter screen plate (4) is provided above it. A dust collection tank (6) is provided below the filter screen plate (4). An oscillating plate (7) for mixing dust and water is provided inside the treatment tank (6). A pressure plate (8) for weight detection is fixedly installed inside the oscillating plate (7). The pressure plate (8) is connected to a microcontroller unit for signal processing and automatic control. The microcontroller unit is connected to a sealing plate (9) for sealing the dust collector (2).

2. A multi-stage filtering and purifying device for kiln exhaust gas according to claim 1, characterized in that: The cooling air duct (1) is equipped with a water-cooled circulation pipe for water cooling of kiln exhaust gas. The dust collector (2) has an air inlet at one end and an air outlet at the other end. The purification tower (3) is equipped with a chemical treatment module, an adsorption module and a monitoring module.

3. The multi-stage filtration and purification device for kiln exhaust gas as described in claim 2, characterized in that: The filter screen (4) is located between the air inlet and the air outlet. The spray assembly (5) includes a water tank (51) for storing water, a high-pressure water pump (52) for providing spray power, and a spray nozzle (53) for spraying water. The water tank (51) is located on one side of the dust collector (2). The high-pressure water pump (52) is fixedly installed on the top of the water tank (51) and fixedly installed on the top of the dust collector (2). One end of the high-pressure water pump (52) is fixedly installed with a spray nozzle (53) fixed inside the dust collector (2). The spray nozzle (53) is located above the filter screen (4).

4. A multi-stage filtering and purifying device for kiln exhaust gas according to claim 3, characterized in that: The processing tank (6) is movably connected to the bottom of the dust collector (2), and the processing tank (6) has an oscillation groove with a fixed oscillation plate (7) inside.

5. The multi-stage filtration and purification device for kiln exhaust gas as described in claim 4, characterized in that: The oscillating plate (7) includes an oscillating motor (71) connected to a microcontroller unit, a dust-carrying plate (72) for carrying dust, and a safety spring (73) for buffering. The oscillating motor (71) is fixedly installed at one end of the processing tank (6). The output end of the oscillating motor (71) is fixedly installed with the dust-carrying plate (72) that moves inside the processing tank (6). A safety spring (73) is fixedly installed at one end of the dust-carrying plate (72). The safety spring (73) is fixedly installed inside the processing tank (6). A waterproof sealing strip is provided between the dust-carrying plate (72) and the processing tank (6).

6. A multi-stage filtering and purifying device for kiln exhaust gas according to claim 5, characterized in that: The pressure plate (8) includes a pressure sensor (81) connected to the microcontroller unit and a pressure bearing plate (82) for bearing pressure. The pressure sensor (81) is fixedly installed inside the dust-carrying plate (72). The pressure bearing plate (82) is fixedly installed at the detection end of the pressure sensor (81). The pressure bearing plate (82) is located inside the dust-carrying plate (72). A waterproof sealing ring is provided between the pressure bearing plate (82) and the dust-carrying plate (72).

7. A multi-stage filtering and purifying device for kiln exhaust gas according to claim 6, characterized in that: The sealing plate (9) includes a pneumatic telescopic rod (91) connected to the microcontroller unit signal and a sealing baffle (92) for sealing the dust collection box (2). The pneumatic telescopic rod (91) is fixedly installed inside the dust collection box (2). One end of the pneumatic telescopic rod (91) is fixedly installed with a sealing baffle (92) that moves inside the dust collection box (2). The sealing baffle (92) is located on one side of the dust-carrying plate (72).

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