A water-saving and emission-reducing wet dust collector

Abstract

This application relates to a water-saving and emission-reducing wet scrubber, which includes a frame with an air inlet and an air inlet pipe on the side wall and an exhaust port on the top. Inside the frame are a water tank and a gas-liquid mixing mechanism, which includes a baffle box, a demister, and a liquid level control component. It also includes guide plates, baffle plates, wire mesh, and other structures. The air box has a special design, and the frame has an inspection port, a filter box, and a receiving box. This application employs a three-stage treatment process: "large particle pre-interception → medium and fine particle water mist capture → fine dust demisting and deep purification." It specifically captures dust of different particle sizes, significantly improving the overall dust removal efficiency. It is suitable for various types of dust. The entire process is wet, eliminating the risk of explosion and reducing airflow temperature. The liquid level control component precisely maintains the water level to avoid water waste. There is no risk of secondary dust generation from the captured dust, meeting environmental emission requirements. It also achieves final purification of exhaust gas and water recycling.

Description

Technical Field

[0001] This application relates to the technical field, and in particular to a water-saving and emission-reducing wet dust collector. Background Technology

[0002] The board processing industry (including processes such as cutting, sanding, milling, edge banding, and polishing) continuously generates a large amount of wood fiber dust, adhesive dust, and fine particles during the production process. These dusts are characterized by wide particle size distribution, light weight, easy airborne properties, strong hydrophobicity, and high adhesion. They not only seriously pollute the workshop working environment and endanger the respiratory health of operators, but also pose a safety hazard of explosion caused by dust accumulation. At the same time, they easily adhere to the surface of equipment and board materials, affecting processing accuracy and product appearance quality.

[0003] Currently, industrial dust removal is mainly divided into two categories: dry dust removal and wet dust removal. Dry dust removal mainly uses bag filters and cartridge filters. Although widely used, in the case of high concentration and high viscosity dust in board processing, the filter media is prone to clogging and caking, requiring frequent cleaning and replacement, resulting in high operation and maintenance costs. In addition, wood dust is flammable and explosive, and dry systems pose a risk of spark ignition, with insufficient safety redundancy.

[0004] Wet scrubbers capture dust through gas-liquid contact, offering advantages such as explosion suppression, cooling, and reduced secondary dust generation, making them a common solution for dust control in panel processing. However, current wet scrubbers have relatively low wetting and capture efficiency for lightweight fiber dust from panels, allowing fine dust to easily escape with the airflow, making it difficult to meet environmental emission requirements. Furthermore, they suffer from uneven gas-liquid mixing, low water recycling rates, high water consumption, and complex sludge treatment, which can easily lead to secondary pollution.

[0005] Therefore, existing dust collection systems are unable to meet the combined needs of efficient collection and water conservation and emission reduction, and cannot adapt to the continuous and refined production requirements of board processing. The industry urgently needs a targeted, stable, and highly effective wet dust collection system. Summary of the Invention

[0006] In order to achieve efficient collection, water conservation and emission reduction, and excellent purification effect, this application provides a water-saving and emission-reducing wet dust collector.

[0007] The water-saving and emission-reducing wet dust collector provided in this application adopts the following technical solution: A water-saving and emission-reducing wet dust collector includes a frame, an air inlet on the side wall of the frame, an air inlet pipe fixedly connected to the outer side wall of the frame, an exhaust port on the top of the frame, a water tank fixedly connected inside the frame, and a gas-liquid mixing mechanism on the inner wall of the frame. The gas-liquid mixing mechanism includes a baffle box extending downwards from the top of the water tank into the tank. A demister is located in the middle of the baffle box. A clearance opening is provided on the side wall of the baffle box corresponding to the air inlet. A baffle is provided on the side of the baffle box near the air inlet. The top folds towards the relief port to form a baffle. The top of the baffle is higher than the top of the relief port, and the top of the baffle is lower than the top of the baffle box to form a gap. The top of the baffle box is closed on the side of the demister near the relief port. An air vent is opened on the top of the baffle box on the side of the demister away from the relief port. An air box is installed on the frame above the air vent. A liquid level control component extending into the water tank is installed on the frame. The liquid level control component is used to control the water level in the water tank to be between the bottom of the baffle box and the bottom of the air inlet.

[0008] By adopting the above technical solution, during operation, the airflow mixed with dust enters the machine frame through the air inlet pipe and inlet. The airflow impacts the baffle on the outside of the baffle box. The baffle top is higher than the clearance opening, effectively intercepting large dust particles and debris. The intercepted large dust particles settle along the discharge channel and fall into the liquid surface of the water tank below, where they are captured. The dust particles pass through the gap at the top of the baffle with the airflow and enter the area between the baffle and the demister. This area forms a high-density water mist wall under the action of the water tank liquid surface and airflow disturbance. Small dust particles collide fully with the water mist, become wetted, and agglomerate into larger dust-liquid clumps. Due to the increased weight, they overcome the buoyancy of the airflow and settle into the water tank under the action of gravity. The water mist carrying residual fine dust enters the demister with the airflow. The mist airflow frequently changes direction as it passes through the tortuous channel inside the demister. Due to its large inertia, the droplets cannot "turn sharply" with the airflow and collide with the blades or wire mesh of the demister and agglomerate. The agglomerated droplets drip back into the water tank under the action of gravity, completing the process. Liquid separation and deep dust removal are employed. The purified gas is discharged through the air outlet, air box, and exhaust port. The liquid level control component adjusts the water level in the tank in real time to ensure that the liquid level is always between the bottom of the baffle box and the bottom of the air inlet. This ensures both the formation of the water mist wall and the space for dust settling, while preventing the water level from being too high and flooding the air inlet channel or too low and causing insufficient water mist generation. The three-stage treatment process of "large particle pre-interception → medium and fine particle water mist capture → fine dust demisting and deep purification" is adopted to achieve targeted capture of dust of different particle sizes, significantly improving the overall dust removal efficiency. It is especially suitable for fine fiber dust and adhesive dust generated from board processing. The entire process is wet treatment, which effectively suppresses dust flying and static electricity accumulation, eliminating the explosion hazard of flammable and explosive dust such as wood dust at the source. At the same time, the water mist environment can reduce the airflow temperature and protect downstream equipment. The liquid level control component accurately maintains the water level to avoid water waste. The captured dust settles directly in the water tank, with no risk of secondary dust generation, meeting environmental emission requirements.

[0009] Optionally, a guide plate is provided inside the baffle box. The guide plate is trapezoidal in shape, and the top of the guide plate is lower than the baffle. A water mist channel is formed between the side wall of the guide plate and the baffle. A water mist wall area is formed between the guide plate, the baffle, the demister, and the top wall of the baffle box.

[0010] By adopting the above technical solution, when the user operates the system, the guide plate and baffle work together to form a regular and narrow water mist channel, which constrains and rectifies the airflow and water mist, concentrating the water mist wall within the channel area. This prevents the water mist from spreading disorderly to both sides, ensuring that small dust particles have sufficient contact, collision, wetting, and aggregation with the water mist. The inclined guide surfaces on both sides of the trapezoidal structure provide a smooth falling path for the dust-liquid agglomerates formed by the aggregation of dust and water mist, allowing the dust-liquid agglomerates to slide quickly down the inclined surface to the water tank under the action of gravity. This prevents the dust-liquid agglomerates from adhering to the baffle, the inner wall of the baffle box, or the front end of the demister. By constraining and forming a concentrated water mist channel, the contact time and contact probability between dust and water mist are extended, significantly improving the effect of wetting, encapsulating, and agglomerating fine dust, thereby improving the overall dust removal and purification efficiency.

[0011] Optionally, a water inlet pipe is fixedly connected to the side wall of the frame, and the end of the water inlet pipe extends into the water tank. The liquid level control component includes a solenoid valve disposed on the water inlet pipe and a first liquid level sensor and a second liquid level sensor disposed on the frame. The first liquid level sensor is located directly below the second liquid level sensor. The height of the first liquid level sensor is higher than the bottom of the baffle, and the height of the second liquid level sensor is lower than the height of the air inlet.

[0012] By adopting the above technical solution, when the user uses the system, the first liquid level sensor is a low liquid level control point, used to monitor whether the water level in the tank is lower than the set lower limit. Its installation height is higher than the bottom of the baffle, ensuring that the lower end of the baffle box is always immersed in water, forming a reliable water seal and preventing dust-laden airflow from escaping from the bottom of the baffle box. The second liquid level sensor is a high liquid level control point, used to monitor whether the water level in the tank reaches the set upper limit. Its installation height is lower than the bottom of the air inlet, avoiding the water level from being too high and submerging the air inlet, causing poor air intake, water-laden airflow, or dust backflow. The two sensors, together with the solenoid valve on the water inlet pipe, realize automatic water replenishment and automatic stop replenishment, so that the water level in the tank is stably maintained in a reasonable range between the bottom of the baffle box and the bottom of the air inlet, ensuring the stable formation of the water mist wall, dust settling, and gas-liquid mixing process. This not only achieves automatic and accurate water level control and automatic water replenishment as needed, avoiding water waste, but also ensures an effective water seal and prevents airflow short circuit.

[0013] Optionally, a baffle plate is provided above the air inlet of the frame, and the baffle plate is located below the air box. The baffle plate slopes downward from the inner wall of the frame towards the center of the frame.

[0014] By adopting the above technical solution, when the user operates the system, as the airflow flows upward through the demister under the action of the bellows, it may still carry a small amount of dust clumps, fiber clumps, or large particulate impurities that have not been completely wetted or settled. The baffle plate uses its inclined surface to physically intercept these substances, preventing them from entering the bellows or being discharged with the purified airflow. At the same time, it blocks and guides the upward airflow passing through the demister, allowing the airflow to enter the bellows smoothly and avoiding turbulence and impact caused by the airflow rushing directly into the bellows. The baffle plate is set inclined downwards, so that the intercepted dust clumps or impurities will slide down its inclined surface under the action of gravity and fall back into the water tank, preventing the dust clumps or particulate impurities from accumulating on the baffle plate.

[0015] Optionally, two wire meshes are detachably connected inside the frame, with the wire meshes located between the baffle plate and the air box.

[0016] By adopting the above technical solution, when the user uses the wire mesh, it further filters the airflow after passing through the baffle plate, intercepting residual fine dust, fiber impurities, and tiny dust-liquid clumps that have not been completely separated in the airflow. This plays a role in equalizing and stabilizing the upward airflow, ensuring that the airflow is evenly distributed before entering the air box, avoiding excessively high local flow velocity or flow deviation. At the same time, it blocks dust and debris that may splash or fall off from below, preventing them from entering the air box and causing damage.

[0017] Optionally, the inner wall of the frame is bolted with a positioning frame, and L-shaped support plates are fixedly connected to the two symmetrical sides of the positioning frame. An L-shaped limiting plate is provided on the side of the positioning frame perpendicular to the support plate, and a clamping bolt is threadedly connected to the side of the positioning frame opposite to the limiting plate.

[0018] By adopting the above technical solution, users can easily replace the wire mesh by fixing it with bolts, and tightening the bolts facilitates the disassembly and installation of the wire mesh.

[0019] Optionally, the wind box includes a partition fixedly connected to the frame, a wind cover fixedly connected inside the partition, a motor fixedly connected to the top of the wind cover, the output shaft of the motor extending into the wind cover and fixedly connected to multiple fan blades, the fan blades being arc-shaped, with bent portions at both ends of the fan blades, an air inlet opening directly below the fan blades on the partition, and an air outlet opening in the tangential direction of the wind cover.

[0020] By adopting the above technical solution, when the user operates the fan, the air inlet is located directly below the fan blades, and the air outlet is opened tangentially along the shroud, forming a centrifugal negative pressure air path. The tangential air outlet and centrifugal shroud allow the airflow to spiral along the inner wall of the shroud, achieving further centrifugal separation of the airflow from residual droplets and dust, forming a continuous and uniform negative pressure field, ensuring that the dust flows along the preset path without escaping or flowing back, and the overall dust removal effect is stable and reliable. When the fan blades rotate, the windward side is under high pressure and the leeward side is under low pressure. The airflow will flow from the high-pressure side of the blade tip to the low-pressure side, forming a blade tip leakage vortex, which carries away a large amount of energy and reduces the effective air volume. The bent parts at both ends of the fan blades form a physical barrier, blocking the flow from high pressure to low pressure, "locking" more airflow in the working area of ​​the blades, which can greatly increase the air volume. The blade tip vortex is one of the main noise sources of the fan. The bent parts of the fan blades disperse and weaken the vortex intensity, reduce turbulence and boundary layer separation, and the actual measurement can reduce wind noise.

[0021] Optionally, a filter box is provided at the exhaust port of the frame, the filter box is used to place the activated carbon mesh plate, and a filter screen is provided at the exhaust port of the frame.

[0022] By adopting the above technical solution, when the user uses the activated carbon mesh plate, it is placed in the filter box. The porous adsorption structure of activated carbon is used to adsorb and capture odor gases, volatile organic components and trace fine dust in the airflow, so as to achieve the final purification of the exhaust gas and further reduce the concentration of pollutants emitted. The filter screen is used to intercept the small amount of dust flocs, droplets and impurities remaining in the airflow, so as to prevent large particles from entering the atmosphere.

[0023] Optionally, a receiving box is provided at the bottom of the frame, located below the water tank. Two mesh boxes are provided inside the receiving box, and a guide plate is fixedly connected between the two mesh boxes. The guide plate is arranged in an inverted V shape.

[0024] By adopting the above technical solution, the receiving box is fixedly installed below the corresponding discharge pipe of the frame during use, serving as a carrier for receiving and separating the dust-water mixture. Its core function is to receive the water and dust mixture discharged from the water tank through the discharge pipe, providing a closed and orderly working space for subsequent solid-liquid separation, and preventing secondary pollution caused by leakage of the dust-water mixture. The screen box is used to perform solid-liquid separation on the water and dust mixture entering the receiving box: through the filter structure of the screen box, dust residue and solid impurities in the mixture are trapped inside the screen box, realizing the centralized collection of dust residue; at the same time, the separated clean water falls through the mesh of the screen box to the bottom of the receiving box and collects, providing a guarantee for the water to be reused in the water tank and realized recycling, effectively reducing water consumption and lowering equipment operating costs.

[0025] Optionally, an inspection port is provided on the outer wall of the frame, located between the water tank and the air box. An inspection door is provided at the inspection port. Screws are rotatably connected to the four corners of the frame at the inspection port. Turntables are threaded onto the screws. Two clamping strips are provided outside the inspection door, and slots for the screws to be inserted are provided on the clamping strips.

[0026] By adopting the above technical solution, when users need to close the maintenance door, they can insert the screw into the slot and rotate the turntable to press the clamping strip, thus ensuring the airtightness of the maintenance door. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 This is a structural diagram of the baffle box; Figure 4 This is an exploded view of an embodiment of this application; Figure 5 This is a sectional view made to highlight the bellows and wire mesh; Figure 6 This is a schematic diagram of the fan structure; Figure 7 This is a schematic diagram of the fan blade structure; Figure 8 This is a structural diagram of the receiving box.

[0028] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Air inlet; 12. Exhaust outlet; 13. Air inlet pipe; 14. Inspection port; 141. Screw; 142. Turntable; 15. Inspection door; 151. Clamping bar; 152. Slot; 16. Water inlet pipe; 2. Water tank; 21. Discharge pipe; 22. Discharge valve; 3. Gas-liquid mixing mechanism; 31. Material baffle box; 311. Clearance port; 312. Air outlet; 32. Demister; 33. Baffle; 331. Material baffle section; 34. Guide plate; 3 5. Buffer plate; 36. Liquid level control component; 361. Solenoid valve; 362. First liquid level sensor; 363. Second liquid level sensor; 4. Air box; 41. Partition plate; 42. Air cover; 421. Air outlet; 43. Motor; 44. Fan blade; 45. Bending part; 5. Baffle plate; 6. Wire mesh; 61. Positioning frame; 62. Support plate; 63. Limiting plate; 64. Clamping bolt; 7. Filter box; 71. Filter screen; 8. Receiving box; 81. Mesh box; 82. Guide plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0032] This application provides a water-saving and emission-reducing wet dust collector, referring to... Figure 1 and Figure 2 The system includes a frame 1, an air inlet pipe 13, a water tank 2, a gas-liquid mixing mechanism 3, a liquid level control component 36, an air box 4, a baffle plate 5, a wire mesh 6, a filter box 7, and a receiving box 8. The air inlet pipe 13 is fixed to the outer wall of the frame 1, the water tank 2 is fixed inside the frame 1, the gas-liquid mixing mechanism 3 is located on the inner wall of the frame 1, the liquid level control component 36 controls the water level in the water tank 2, the air box 4 is located above the air outlet 312 on the frame 1, the baffle plate 5 is below the air box 4 and slopes downwards from the inner wall of the frame 1 towards the center, the wire mesh 6 is detachably connected inside the frame 1 and located between the baffle plate 5 and the air box 4, the filter box 7 is located at the exhaust outlet 12 of the frame 1, and the receiving box 8 is below the water tank 2. This structural layout enables the wet scrubber to achieve targeted collection of dust particles of different sizes, precise water level control to avoid water waste, and ultimately achieve efficient air purification and water conservation and emission reduction.

[0033] Specifically, the frame 1 serves to support and house other components. The side wall of the frame 1 has an air inlet 11, which is the entrance for the airflow mixed with dust to enter the equipment; the top of the frame 1 has an exhaust port 12, which is used to discharge the purified gas.

[0034] The intake duct 13 is fixedly connected to the outer wall of the frame 1. Its function is to guide the airflow mixed with dust smoothly into the interior of the frame 1. The shape of the intake duct 13 can be circular or square, and its cross-sectional dimensions are determined according to the actual intake volume. The intake duct 13 can be fixed to the frame 1 by welding to ensure the sealing and firmness of the connection; or it can be connected by flange for easy installation and disassembly.

[0035] Water tank 2 is fixedly connected inside frame 1, and its interior is filled with liquid for dust collection. The bottom of water tank 2 is conical, which gives the bottom of water tank 2 a guiding effect to converge towards the center. The settled dust and sludge will automatically gather towards the bottom center under the action of gravity, and will not easily spread and accumulate at the bottom of the tank, which is convenient for subsequent centralized treatment.

[0036] Reference Figure 2 and Figure 3 The gas-liquid mixing mechanism 3 includes a baffle box 31, a demister 32, and a baffle 33. The baffle box 31 extends downward from the top of the water tank 2 into the water tank 2, and a demister 32 is provided in its middle. The demister 32 can be a wire mesh demister 32 or a blade demister 32, etc. A clearance opening 311 is provided on the side wall of the baffle box 31 corresponding to the air inlet 11. A baffle 33 is provided on the side of the baffle box 31 near the air inlet 11. The top of the baffle 33 is folded towards the clearance opening 311 to form a baffle part 331. The top of the baffle part 331 is higher than the top of the clearance opening 311, thereby effectively intercepting large particles of dust and debris. At the same time, the top of the baffle part 331 is lower than the top of the baffle box 31 to form a gap, allowing particulate dust to pass through the gap with the airflow. The top of the baffle box 31 is closed on the side of the demister 32 near the relief port 311, while an over-vent 312 is opened on the side of the demister 32 away from the relief port 311.

[0037] In addition, a guide plate 34 is provided inside the baffle box 31. The guide plate 34 is trapezoidal, and its top is lower than that of the baffle 33. A water mist channel is formed between the side wall of the guide plate 34 and the baffle 33. A water mist wall area is formed between the guide plate 34, the baffle 33, the demister 32, and the top wall of the baffle box 31. During operation, after the airflow mixed with dust enters, a large amount of airflow carrying dust moves through the air inlet 11 to the baffle 33. The airflow collides here, and large dust particles are intercepted by the baffle part 331 and settle along the discharge channel, falling into the liquid surface of the water tank 2 and being captured. Small dust particles pass through the gap with the airflow and enter the water mist wall area. Under the action of the liquid surface of the water tank 2 and the airflow disturbance, a high-density water mist wall is formed in this area. The small dust particles collide fully with the water mist, are wetted, and agglomerate into larger dust-liquid clumps. Due to the increase in weight, the dust-liquid clumps overcome the buoyancy of the airflow and settle into the water tank 2 under the action of gravity. Water mist carrying residual fine dust enters the demister 32 with the airflow. As the mist airflow passes through the tortuous channel inside the demister 32, it frequently changes direction. Due to its large inertia, the mist droplets cannot "turn sharply" with the airflow and instead collide with the blades or wire mesh of the demister 32 and accumulate. The accumulated droplets then drip back into the water tank 2 under the action of gravity, completing gas-liquid separation and deep dust removal. The guide plate 34 and the baffle 33 work together to form a regular and narrow water mist channel, which constrains and rectifies the airflow and water mist, concentrating the water mist wall within the channel area and preventing the water mist from spreading disorderly to both sides. This ensures that small dust particles and water mist have sufficient contact, collision, wetting, and aggregation. The inclined guide surfaces on both sides of the trapezoidal structure provide a smooth falling path for the dust-liquid agglomerates formed by the aggregation of dust and water mist, allowing the dust-liquid agglomerates to slide quickly down the inclined surface into the water tank 2 under the action of gravity, preventing the dust-liquid agglomerates from adhering to the baffle 33, the inner wall of the baffle box 31, or the front end of the demister 32.

[0038] Reference Figure 2 and Figure 4A water inlet pipe 16 is fixedly connected to the side wall of the frame 1, and its end extends into the water tank 2 for replenishing water into the water tank 2. A buffer plate 35 is fixedly connected to the side of the receiving box near the water inlet pipe 16. The buffer plate 35 is used to reduce the impact of water flow on the baffle 33. The liquid level control component 36 includes a solenoid valve 361 installed on the water inlet pipe 16 and a first liquid level sensor 362 and a second liquid level sensor 363 installed on the frame 1. The first liquid level sensor 362 is located directly below the second liquid level sensor 363. The height of the first liquid level sensor 362 is higher than the bottom of the baffle 33. It serves as a low liquid level control point to monitor whether the water level in the water tank 2 is lower than the set lower limit, ensuring that the lower end of the baffle box 31 is always immersed in water, forming a reliable water seal, and preventing dust-laden airflow from escaping from the bottom of the baffle box 31. The second liquid level sensor 363 is positioned below the height of the air inlet 11. As a high-level control point, it monitors whether the water level in the water tank 2 has reached the set upper limit, preventing excessive water level from flooding the air inlet 11 and causing poor air intake, water carryover in the airflow, or dust backflow. The two sensors, in conjunction with the solenoid valve 361 on the water inlet pipe 16, enable automatic water replenishment and automatic stop-replenishment, ensuring the water level in the water tank 2 is stably maintained within a reasonable range between the bottom of the baffle box 31 and the bottom of the air inlet 11. This guarantees stable water mist wall formation, dust settling, and gas-liquid mixing processes. For example, when the first liquid level sensor 362 detects that the water level is below the lower limit, the solenoid valve 361 opens, and the water inlet pipe 16 begins replenishing water to the water tank 2; when the second liquid level sensor 363 detects that the water level has reached the upper limit, the solenoid valve 361 closes, stopping water replenishment.

[0039] An inspection port 14 is provided on the outer wall of the frame 1, located between the water tank 2 and the air box 4, facilitating internal inspection and maintenance of the equipment. An inspection door 15 is also provided at the inspection port 14. Screws 141 are rotatably connected to the four corners of the inspection port 14 on the frame 1. A turntable 142 is threaded onto the screws 141. Two clamping strips 151 are provided on the outside of the inspection door 15, with slots 152 for the screws 141 to insert into. When it is necessary to close the inspection door 15, the screws 141 are inserted into the slots 152, and the turntable 142 is rotated to clamp the clamping strips 151, thus ensuring the airtightness of the inspection door 15.

[0040] The baffle plate 5 is located below the air box 4, sloping downwards from the inner wall of the frame 1 towards the center of the frame 1. Under the action of the air box 4, as the airflow flows upwards through the demister 32, it may still carry a small amount of dust clumps, fiber clumps, or large particulate impurities that are not completely wetted or settled. The baffle plate 5 uses its sloping surface to physically intercept these substances, preventing them from entering the air box 4 or being discharged with the purified airflow. Simultaneously, it blocks and guides the upward-flowing airflow through the demister 32, ensuring a smooth entry of the airflow into the air box 4 and preventing turbulence and impact caused by the airflow directly impacting the air box 4. The baffle plate 5 is sloping downwards, allowing the intercepted dust clumps or impurities to slide off its sloping surface under gravity and fall back into the water tank 2, preventing the accumulation of dust clumps or particulate impurities on the baffle plate 5.

[0041] Reference Figure 2 and Figure 5 The wire mesh 6 is detachably connected within the frame 1 and located between the baffle plate 5 and the air box 4; generally, two are installed. The wire mesh 6 further refines the airflow after passing through the baffle plate 5, intercepting residual fine dust, fibrous impurities, and incompletely separated micro-dust clumps. Simultaneously, the wire mesh 6 evens and stabilizes the upward airflow, ensuring a uniform distribution before entering the air box 4 and preventing excessively high local velocities or flow deviations. Furthermore, the wire mesh 6 blocks dust and debris that may splash or fall from below, preventing them from entering the air box 4 and causing damage. The wire mesh 6 can be made of stainless steel, offering good corrosion resistance and strength. The frame 1 is secured by multiple frame bolts; when replacing the wire mesh 6, the frame 1 of the air box 4 section can be removed first.

[0042] The inner wall of the frame 1 is bolted with a positioning frame 61, which is horizontally positioned. L-shaped support plates 62 are fixedly connected to its symmetrical sides. An L-shaped limiting plate 63 is provided on the side of the positioning frame 61 perpendicular to the support plate 62. A clamping bolt 64 is threadedly connected to the positioning frame 61 on the opposite side of the limiting plate 63. The wire mesh 6 can be installed and removed through these structures. For example, the wire mesh 6 can be placed in the space formed by the support plate 62 and the limiting plate 63, and then fixed with the clamping bolt 64, thus ensuring the wire mesh 6 is securely installed inside the frame 1. The frame 1 can be made of high-strength steel to ensure its structural stability and durability; other metal materials such as stainless steel can also be selected according to actual needs.

[0043] Reference Figure 6 and Figure 7The air box 4 includes a partition 41 fixedly connected to the frame 1. A fan hood 42 is fixedly connected inside the partition 41. A motor 43 is fixedly connected to the top of the fan hood 42. The output shaft of the motor 43 extends into the fan hood 42 and is fixedly connected to multiple fan blades 44. The fan blades 44 are arc-shaped, with bends 45 at both ends. An air inlet is provided on the partition 41 directly below the fan blades 44, and an air outlet 421 is provided tangentially in the fan hood 42. The air inlet is located directly below the fan blades 44, and the air outlet 421 is tangentially opened along the fan hood 42, forming a centrifugal negative pressure air path. By using the tangential air outlet 421 and the centrifugal fan hood 42, the airflow spirals along the inner wall of the fan hood 42, achieving further centrifugal separation of the airflow from residual droplets and dust, forming a continuous and uniform negative pressure field, ensuring that the dust flows along the preset path without escaping or flowing back, resulting in a stable and reliable overall dust removal effect. When the fan blade 44 rotates, the windward side is under high pressure and the leeward side is under low pressure. The airflow will flow from the high-pressure side of the blade tip to the low-pressure side, forming a tip leakage vortex. This vortex carries away a large amount of energy and reduces the effective airflow. The bends 45 at both ends of the fan blade 44 form a physical barrier, blocking the flow from high pressure to low pressure and "locking" more airflow in the working area of ​​the blade, which can greatly increase the airflow. Tip vortices are one of the main noise sources of fans. The bends 45 of the fan blade 44 disperse and weaken the vortex intensity, reduce the separation of turbulence and boundary layer, and can reduce wind noise in actual measurements.

[0044] Reference Figure 2 and Figure 8 A discharge pipe 21 is installed at the bottom of water tank 2, and a discharge valve 22 is installed on the discharge pipe 21. By controlling the opening and closing of the discharge valve 22, the dust and wastewater in water tank 2 can be discharged. A receiving box 8 is located below the discharge pipe 21 of frame 1. The receiving box 8 contains two mesh boxes 81, and a guide plate 82 is fixedly connected between the two mesh boxes 81. The guide plate 82 is arranged in an inverted V shape. The receiving box 8 serves as a carrier for receiving and separating the dust-water mixture. Its core function is to receive the water and dust mixture discharged from water tank 2 through the discharge pipe 21, providing a closed and orderly working space for subsequent solid-liquid separation and preventing secondary pollution caused by leakage of the dust-water mixture. The function of the mesh box 81 is to separate the solid and liquid components of the water and dust mixture entering the receiving box 8. Through the filter screen 71 structure of the mesh box 81, the dust residue and solid impurities in the mixture are trapped inside the mesh box 81, realizing the centralized collection of dust residue. At the same time, the separated clean water passes through the pores of the mesh box 81 and falls to the bottom of the receiving box 8 to collect, providing a guarantee for the water to be reused in the water tank 2 and realizing recycling, effectively reducing water consumption and lowering equipment operating costs.

[0045] A filter box 7 is located on the frame 1 at the exhaust port 12 and is used to house an activated carbon mesh plate. The activated carbon mesh plate utilizes the porous adsorption structure of activated carbon to adsorb and capture odorous gases, volatile organic compounds, and trace amounts of fine dust in the airflow, achieving final purification of the exhaust gas and further reducing the concentration of pollutants emitted. A filter screen 71 is also installed on the frame 1 at the exhaust port 12. The filter screen 71 is used to intercept small amounts of residual dust clumps, droplets, and impurities in the airflow, preventing large particles from entering the atmosphere.

[0046] The implementation principle of this embodiment is as follows: This water-saving and emission-reducing wet scrubber, through its unique structural design, adopts a three-stage treatment process of "large particle pre-interception → medium and fine particle water mist capture → fine dust demisting and deep purification," achieving targeted capture of dust of different particle sizes, greatly improving the overall dust removal efficiency. It is especially suitable for fine fiber dust and adhesive dust generated from board processing. The entire process is wet, effectively suppressing dust dispersion and static electricity accumulation, eliminating the explosion hazard of flammable and explosive dust such as wood dust at the source. At the same time, the water mist environment can reduce the airflow temperature, protecting downstream equipment. The liquid level control component 36 can accurately maintain the water level, avoiding waste of water resources. The captured dust settles directly in the water tank 2, with no risk of secondary dust generation, meeting environmental emission requirements. In addition, the various components work together, such as the baffle plate 5, wire mesh 6, and filter box 7, to further purify and treat the airflow. The receiving box 8 realizes solid-liquid separation and water resource recycling, which improves the overall performance and practicality of the equipment. Compared with the existing technology, it has been significantly improved and enhanced.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water-saving and emission-reducing wet dust collector, characterized in that: Includes a frame (1), an air inlet (11) is provided on the side wall of the frame (1), an air inlet pipe (13) is fixedly connected to the outer side wall of the frame (1), an exhaust port (12) is provided on the top of the frame (1), a water tank (2) is fixedly connected inside the frame (1), and a gas-liquid mixing mechanism (3) is provided on the inner wall of the frame (1). The gas-liquid mixing mechanism (3) includes a baffle box (31), which extends downward from the top of the water tank (2) into the water tank (2). A demister (32) is provided in the middle of the baffle box (31). A clearance opening (311) is provided on the side wall of the baffle box (31) at the position corresponding to the air inlet (11). A baffle (33) is provided on the side of the baffle box (31) near the air inlet (11). The top of the baffle (33) is folded towards the clearance opening (311) to form a baffle part (331). The top of the baffle part (331) is higher than the top of the clearance opening (311). A gap is formed below the top of the baffle box (31). The top of the baffle box (31) is closed on the side of the demister (32) near the relief port (311). An air outlet (312) is opened on the side of the baffle box (31) away from the relief port (311). A wind box (4) is provided on the frame (1) above the air outlet (312). A liquid level control component (36) extending into the water tank (2) is provided on the frame (1). The liquid level control component (36) is used to control the water level in the water tank (2) to be between the bottom of the baffle box (31) and the bottom of the air inlet (11).

2. The water-saving and emission-reducing wet dust collector according to claim 1, characterized in that: The baffle box (31) is provided with a guide plate (34), which is trapezoidal in shape. The top of the guide plate (34) is lower than the baffle (33). A water mist channel is formed between the side wall of the guide plate (34) and the baffle (33). A water mist wall area is formed between the guide plate (34), the baffle (33), the demister (32), and the top wall of the baffle box (31).

3. The water-saving and emission-reducing wet dust collector according to claim 1, characterized in that: The side wall of the frame (1) is fixedly connected to a water inlet pipe (16), the end of which extends into the water tank (2). The liquid level control component (36) includes a solenoid valve (361) installed on the water inlet pipe (16) and a first liquid level sensor (362) and a second liquid level sensor (363) installed on the frame (1). The first liquid level sensor (362) is located directly below the second liquid level sensor (363). The height of the first liquid level sensor (362) is higher than the bottom of the baffle (33), and the height of the second liquid level sensor (363) is lower than the height of the air inlet (11).

4. The water-saving and emission-reducing wet dust collector according to claim 1, characterized in that: The frame (1) is provided with a baffle plate (5) above the air inlet (312). The baffle plate (5) is located below the air box (4) and slopes downward from the inner wall of the frame (1) toward the center of the frame (1).

5. A water-saving and emission-reducing wet dust collector according to claim 4, characterized in that: The frame (1) has two detachable wire meshes (6) located between the baffle plate (5) and the air box (4).

6. A water-saving and emission-reducing wet dust collector according to claim 5, characterized in that: The inner wall of the frame (1) is bolted with a positioning frame (61). The positioning frame (61) is fixedly connected with L-shaped support plates (62) on both sides perpendicular to the inspection door (15). An L-shaped limiting plate (63) is provided on the side of the positioning frame (61) away from the inspection door (15). A clamping bolt (64) is threadedly connected to the side of the positioning frame (61) close to the inspection door (15).

7. A water-saving and emission-reducing wet dust collector according to claim 1, characterized in that: The wind box (4) includes a partition (41) fixedly connected to the frame (1), a wind cover (42) fixedly connected inside the partition (41), a motor (43) fixedly connected to the top of the wind cover (42), the output shaft of the motor (43) extends into the wind cover (42) and is fixedly connected to multiple fan blades (44), the fan blades (44) are arc-shaped, and the two ends of the fan blades (44) are provided with bent parts (45). The partition (41) is provided with an air inlet directly below the fan blades (44), and the wind cover (42) is provided with an air outlet (421) in the tangential direction.

8. A water-saving and emission-reducing wet dust collector according to claim 1, characterized in that: The frame (1) is provided with a filter box (7) at the exhaust port (12). The filter box (7) is used to place the activated carbon mesh plate. The frame (1) is provided with a filter screen (71) at the exhaust port (12).

9. A water-saving and emission-reducing wet dust collector according to claim 1, characterized in that: The bottom of the frame (1) is provided with a receiving box (8), which is located below the water tank (2). The receiving box (8) is provided with two mesh boxes (81), and a guide plate (82) is fixedly connected between the two mesh boxes (81). The guide plate (82) is arranged in an inverted V shape.

10. A water-saving and emission-reducing wet dust collector according to claim 1, characterized in that: The outer wall of the frame (1) is provided with an inspection port (14), which is located between the water tank (2) and the air box (4). An inspection door (15) is provided at the inspection port (14). The frame (1) is rotatably connected to the four corners of the inspection port (14) with screws (141). A turntable (142) is threaded onto the screws (141). Two clamping strips (151) are provided outside the inspection door (15). The clamping strips (151) have slots (152) for the screws (141) to be inserted.

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