A wet spray dust suppression device for wood processing cutting dust.

Abstract

This invention proposes a wet spray dust suppression device for cutting dust in wood processing, belonging to the field of spray dust removal technology. It includes a cyclone drum and a dust collection hood. The dust collection hood covers the saw blade, and a conveying pipe is installed between the dust collection hood and the cyclone drum. A fan is installed inside the conveying pipe, which tangentially conveys the dust generated by the saw blade cutting inside the dust collection hood into the cyclone drum through the conveying pipe. An overflow water supply mechanism is installed on the cyclone drum to evenly distribute spray water on the inner wall of the cyclone drum. This invention provides a wet spray dust suppression device for cutting dust in wood processing. The fan tangentially sends the dust-laden airflow into the cyclone drum to form a vortex. After centrifugal separation, water wetting and collection on the drum wall, water bath collection in a conical drum, and secondary collection by a fine dust capture mechanism, the purified airflow is discharged through an exhaust pipe. Overflow wetting replaces nozzle atomization, avoiding nozzle clogging and eliminating the need for water pump pressurization. The device has a simple structure, low energy consumption, and good dust suppression effect.

Description

Technical Field

[0001] This invention relates to the field of spray dust suppression technology, and in particular to a wet spray dust suppression device for cutting dust in wood processing. Background Technology

[0002] In the wood processing industry, cutting processes such as circular sawing, band sawing, and milling generate a large amount of sawdust and wood dust. The particle size distribution of cutting dust is wide, including both large sawdust and shavings, as well as a significant proportion of fine wood dust. If this dust escapes into the workshop air, it will pollute the working environment, accelerate equipment wear, and, when inhaled, harm the health of operators. Furthermore, wood dust is flammable and poses a dust explosion risk in high concentrations suspended in the air.

[0003] One of the commonly used dust suppression methods in woodworking plants is wet spraying. A dust collection hood is installed at the cutting station, and the dust-laden airflow is introduced into a spraying device via a conveyor pipe. The spraying device sprays water mist onto the dust-laden airflow, causing the dust to be moistened, increased in weight, and then settle and separate. The purified airflow is then discharged. Compared to dry dust collection methods, wet spraying eliminates the problem of filter bag clogging and is more adaptable to dust containing moisture or sticky impurities, thus making it widely used in woodworking plants.

[0004] Current wet spray dust suppression systems may have the following problems in practical use: Spray systems generally use small-diameter nozzles (spray heads) to atomize water. Wood cutting dust often contains long-fiber wood chips and debris containing adhesive components, which easily clog the nozzle orifices, causing spray failure. This necessitates shutdown for unclogging or nozzle replacement, affecting continuous operation. Nozzle atomization requires a water pump for pressurized water supply, and the system also needs an independent induced draft fan and its motor to draw in the dust-laden airflow. The entire machine includes multiple power components such as water pumps, fan motors, etc., resulting in high energy consumption. With numerous components and potential malfunctions, maintenance costs increase accordingly. To ensure effective collection, the water consumption for spraying is often large, resulting in a significant amount of muddy wastewater that requires subsequent treatment using sedimentation tanks or mud-water separation facilities, leading to heavy water consumption and sludge treatment burdens. Fine wood powder has a small particle size and low inertia, so relying solely on random collisions between droplets and the powder for collection has limited efficiency, and some fine powder is easily released with the airflow. Furthermore, if the airflow and water mist are not completely separated, uncollected water mist will be discharged along with the purified airflow, causing secondary problems such as increased humidity in the workshop and equipment corrosion. Summary of the Invention

[0005] Based on the technical problems existing in the background art, the present invention proposes a wet spray dust suppression device for cutting dust in wood processing.

[0006] The present invention proposes a wet spray dust suppression device for cutting dust in wood processing, comprising a cyclone drum and a dust collection hood. The dust collection hood covers the saw blade, and a conveying pipe is provided between the dust collection hood and the cyclone drum. A fan is installed in the conveying pipe, and the fan is used to tangentially convey the dust generated by the saw blade cutting in the dust collection hood into the cyclone drum through the conveying pipe. The cyclone drum is equipped with an overflow water supply mechanism, which is used to evenly distribute the spray water on the inner wall of the cyclone drum. When the dust-laden airflow blows towards the inner wall of the cyclone drum, the dust in the dust-laden airflow mixes with the water liquid on the inner wall of the cyclone drum to achieve dust reduction. A water collection tank is installed at the bottom of the cyclone tube, and a conical tube is installed at the connection between the cyclone tube and the water collection tank. The cyclone tube is also equipped with a fine dust capture mechanism, which is used to capture fine dust in the airflow after dust suppression by spraying. An exhaust pipe is installed through the middle of the top of the vortex tube, and the bottom end of the exhaust pipe penetrates the top of the vortex tube and extends into the interior of the vortex tube.

[0007] Preferably, the overflow water supply mechanism includes an annular water tank and an inlet pipe; the annular water tank is fitted around the outer periphery of the vortex cylinder, and the inner ring of the annular water tank has an overflow port communicating with the vortex cylinder. The water in the annular water tank flows to the inner wall of the vortex cylinder through the overflow port. One end of the inlet pipe is connected to the annular water tank, and the other end of the inlet pipe is connected to the water supply device.

[0008] Preferably, the overflow water supply mechanism further includes an overflow weir plate; the overflow weir plate is installed at the overflow outlet, and the top surface of the overflow weir plate has multiple overflow gaps circumferentially opened, through which the water in the annular water tank flows to the inner wall of the vortex cylinder.

[0009] Preferably, the overflow water supply mechanism further includes a spiral guide bar; the spiral guide bar is spirally arranged on the inner wall of the vortex cylinder.

[0010] Preferably, the fine dust capturing mechanism includes a first dust-collecting umbrella; the first dust-collecting umbrella is located inside the vortex tube, and the tip of the first dust-collecting umbrella faces upward.

[0011] Preferably, the fine dust capturing mechanism further includes a second dust-collecting umbrella; the second dust-collecting umbrella is located inside the vortex tube, with its tip pointing upwards, and is located directly below the first dust-collecting umbrella.

[0012] Preferably, the diameter of the second vacuum umbrella is smaller than the diameter of the first vacuum umbrella.

[0013] Preferably, the first dust-collecting umbrella is made of a corrosion-resistant metal plate, and the bottom surface of the first dust-collecting umbrella is roughened by sandblasting.

[0014] Preferably, the second dust-collecting umbrella is made of corrosion-resistant metal plate, and the bottom surface of the second dust-collecting umbrella is roughened by sandblasting.

[0015] Preferably, both the No. 1 and No. 2 vacuum umbrellas are located on the path of the rising airflow at the center after the conical water bath returns. The water mist carried by the rising airflow impacts the bottom surfaces of the No. 1 and No. 2 vacuum umbrellas and wets them to form a water film. The water film flows along the bottom surfaces of the No. 1 and No. 2 vacuum umbrellas, adheres to the fine dust, and then drips back from the edges of the No. 1 and No. 2 vacuum umbrellas.

[0016] The wet spray dust suppression device for cutting dust in wood processing proposed in this invention has the following beneficial effects: the dust-laden airflow collected by the dust collection hood is tangentially conveyed into the cyclone drum by the fan in the conveying pipe to form a cyclone. The dust is thrown against the drum wall under the action of centrifugal force and settles in contact with the water that wets the drum wall by the overflow water supply mechanism. The residual dust falls into the water in the water collection tank when it is turned back by the conical drum opening, achieving water bath capture. The fine dust remaining in the airflow is then captured a second time by the fine dust capture mechanism. The purified airflow is discharged through the exhaust pipe inserted downward into the cyclone drum. Thus, overflow wetting replaces nozzle atomization spraying, avoiding nozzle clogging, eliminating the need for water pump pressurization, improving the capture effect of fine dust and preventing airflow short circuit. The overall structure is simple, the energy consumption is low, and the dust suppression effect is stable. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a wet spray dust suppression device for cutting dust in wood processing proposed in this invention. Figure 2 This is a side sectional view of a wet spray dust suppression device for cutting dust in wood processing proposed in this invention; Figure 3 This is a top cross-sectional view of the connection between the conveying pipe and the cyclone drum in a wet spray dust suppression device for wood processing dust proposed in this invention. Figure 4 This is a schematic diagram of the overflow weir plate in a wet spray dust suppression device for wood processing cutting dust proposed in this invention.

[0018] In the diagram: 1. Swirl tube; 2. Dust collection hood; 3. Conveyor pipe; 4. Water collection tank; 5. Conical tube; 6. Exhaust pipe; 7. Annular water tank; 8. Water inlet pipe; 9. Overflow weir plate; 10. Overflow notch; 11. No. 1 dust collection umbrella; 12. No. 2 dust collection umbrella; 13. Spiral guide strip. Detailed Implementation

[0019] Reference Figures 1-4This invention proposes a wet spray dust suppression device for woodworking cutting dust, comprising a cyclone drum 1 and a dust collection hood 2. The dust collection hood 2 covers the saw blade, and a conveying pipe 3 is provided between the dust collection hood 2 and the cyclone drum 1. A fan is installed inside the conveying pipe 3. The fan is used to tangentially convey the dust generated by the saw blade cutting inside the dust collection hood 2 into the cyclone drum 1 through the conveying pipe 3. When the fan installed in the conveying pipe 3 rotates, it generates a suction airflow. The dust-laden airflow generated by the saw blade cutting the wood flows through the conveying pipe 3 under the constraint of the dust collection hood 2 and enters the cyclone drum 1 tangentially. The dust-laden airflow rotates along the inner wall of the cyclone drum 1, forming a vortex. Under the action of centrifugal force, larger dust particles in the dust-laden airflow are thrown towards the inner wall of the cyclone drum 1, achieving preliminary separation of dust and airflow. The fan in the conveying pipe 3 provides the conveying power for the dust-laden airflow, causing the dust-laden airflow to enter the cyclone drum 1 tangentially and generate a vortex. This system utilizes centrifugal force to achieve initial dust separation, eliminating the need for nozzle atomization devices and independent induced draft motors. It features a simple structure and low energy consumption. An overflow water supply mechanism is installed on the cyclone cylinder 1, which evenly distributes spray water onto the inner wall of the cylinder. When the dust-laden airflow blows towards the inner wall of the cyclone cylinder 1, the dust in the airflow mixes with the water on the inner wall, achieving dust settling. The overflow water supply mechanism evenly distributes spray water onto the inner wall of the cyclone cylinder 1, forming a water film. After the dust-laden airflow enters the cyclone cylinder 1, it rotates along the inner wall. Under the action of centrifugal force, dust particles are thrown towards the inner wall of the cyclone cylinder 1, contacting the water film on the inner wall. The dust is wetted by the water and adheres to the water film, flowing downwards with the water film. By using an overflow water film instead of nozzle atomization spraying, there is no nozzle clogging problem, and no need for a water pump for pressurized water supply. The spray water flows naturally by gravity, making the water supply structure simple and reliable.

[0020] like Figure 1 and Figure 2 As shown, a water collection tank 4 is installed at the bottom of the cyclone separator 1, and a conical cylinder 5 is installed at the connection between the cyclone separator 1 and the water collection tank 4. In actual use, the airflow after cyclone separation and water film capture flows downward along the inner wall of the cyclone separator 1. After the constriction effect of the conical cylinder 5, the airflow turns back upward. The constriction structure of the conical cylinder 5 causes the airflow to contract at the conical cylinder 5. The residual dust particles in the airflow slide down along the inner wall of the conical cylinder 5 under the action of inertia and enter the water in the water collection tank 4. The turning airflow impacts the water surface in the water collection tank 4 and rolls up water mist. The constriction structure of the conical cylinder 5 guides the airflow to turn back. The water in the water collection tank 4 performs water bath capture of the downward dust. At the same time, the water mist rolled up by the turning airflow moves with the rising airflow, providing moist conditions for the subsequent capture of fine dust.

[0021] like Figure 2As shown, a fine dust capture mechanism is also installed inside the cyclone cylinder 1. The fine dust capture mechanism is used to capture fine dust in the airflow after spray dust suppression. In actual use, after cyclone separation, water film capture and water bath capture, the fine dust particles with smaller particle sizes in the airflow continue to rise with the central rising airflow. The fine dust capture mechanism is set on the movement path of the central rising airflow. When the rising airflow carrying fine dust passes through the fine dust capture mechanism, it is turned. Due to its large inertia, the fine dust particles cannot turn synchronously with the airflow and collide with the fine dust capture mechanism and are intercepted and captured. The fine dust that is difficult to capture by cyclone separation is captured a second time, which improves the overall dust suppression effect of the device.

[0022] like Figure 1 and Figure 2 As shown, an exhaust pipe 6 is installed through the middle of the top of the cyclone 1. The bottom end of the exhaust pipe 6 penetrates the top of the cyclone 1 and extends into the interior of the cyclone 1. In actual use, the bottom end of the exhaust pipe 6 penetrates the top of the cyclone 1 and extends into the interior of the cyclone 1. The purified airflow, after being captured by the fine dust capture mechanism, enters the exhaust pipe 6 from the interior of the cyclone 1 through the bottom inlet of the exhaust pipe 6 and exits the cyclone 1 along the exhaust pipe 6. The bottom end of the exhaust pipe 6 extends into the interior of the cyclone 1, so that the rising airflow can only enter the exhaust pipe 6 after being deflected, avoiding the airflow from directly escaping from the top of the cyclone 1 and causing a short circuit in the airflow, ensuring that the airflow is fully separated in the cyclone 1 before being discharged.

[0023] like Figure 1 and Figure 2 As shown, the overflow water supply mechanism includes an annular water tank 7 and an inlet pipe 8. The annular water tank 7 is fitted around the outer circumference of the vortex cylinder 1. An overflow port communicating with the vortex cylinder 1 is opened on the inner ring of the annular water tank 7. The water in the annular water tank 7 flows to the inner wall of the vortex cylinder 1 through the overflow port. One end of the inlet pipe 8 is connected to the annular water tank 7, and the other end of the inlet pipe 8 is connected to a water supply device. The water supply device can be a water tank, the height of which is higher than that of the annular water tank 7. The water flows downward by its own gravity. The water supply device can be connected to a tap for water supply. In actual use, the water supply device supplies water to the annular water tank 7 through the inlet pipe 8. After the water in the annular water tank 7 is filled, it flows through the overflow port opened in the inner circle of the annular water tank 7 to the inner wall of the vortex cylinder 1, forming a water film distributed circumferentially on the inner wall of the vortex cylinder 1. The water supply is supplied by overflow, and the water flows to the inner wall of the vortex cylinder 1 by gravity. There is no need for water pump pressurization, and the water supply structure is simple and reliable.

[0024] like Figure 2 and Figure 4As shown, the overflow water supply mechanism also includes an overflow weir plate 9; the overflow weir plate 9 is installed at the overflow outlet, and multiple overflow notches 10 are circumferentially opened on the top surface of the overflow weir plate 9. The water in the annular water tank 7 flows to the inner wall of the vortex cylinder 1 through the overflow notches 10; in actual use, the overflow weir plate 9 is installed at the overflow outlet of the annular water tank 7, and the water in the annular water tank 7 crosses the top surface of the overflow weir plate 9, and is divided into multiple streams of water through the multiple overflow notches 10 circumferentially opened on the top surface of the overflow weir plate 9, which flow evenly to the inner wall of the vortex cylinder 1. The more overflow gaps 10 there are, the smaller the distance between two adjacent water streams, the more continuous the area of ​​the inner wall of the vortex cylinder 1 that is wetted by the water, and the higher the probability that dust particles will come into contact with the water when they are thrown toward the inner wall of the vortex cylinder 1. By having a sufficient number of circumferentially distributed overflow gaps 10, the water flows evenly along the inner wall of the vortex cylinder 1 in the form of multiple water streams, reducing the gap between adjacent water streams, improving the uniformity of circumferential wetting of the inner wall of the vortex cylinder 1, avoiding the concentration of water in a local area and causing flow deviation, and increasing the probability of dust and water contact.

[0025] like Figure 2 As shown, the overflow water supply mechanism also includes a spiral guide strip 13; the spiral guide strip 13 is spirally arranged on the inner wall of the vortex cylinder 1; in actual use, the spiral guide strip 13 is spirally arranged on the inner wall of the vortex cylinder 1, and the water overflowing to the inner wall of the vortex cylinder 1 flows downward in a spiral shape along the inner wall of the vortex cylinder 1 under the guidance of the spiral guide strip 13, moving in the same direction as the airflow rotating inside the vortex cylinder 1; the spiral guide strip 13 constrains the overflow water into a water ribbon spiraling downward along the cylinder wall, so that the water and the vortex airflow keep moving in the same direction, reducing the water being blown away or deflected by the rotating airflow, and at the same time extending the flow path of the water on the inner wall of the vortex cylinder 1, increasing the contact opportunity between dust and water, and improving the dust suppression effect.

[0026] like Figure 2 As shown, the fine dust capturing mechanism includes a primary dust collection umbrella 11. The primary dust collection umbrella 11 is located inside the vortex tube 1, with its tip pointing upwards. In actual use, the primary dust collection umbrella 11 is located inside the vortex tube 1 with its tip pointing upwards. The central rising airflow carries fine dust upwards, and the water mist swirled up after being deflected by the water bath in the conical tube 5 rises along with the rising airflow. The rising airflow impacts the bottom surface of the primary dust collection umbrella 11, and the airflow deflects along the bottom surface of the primary dust collection umbrella 11 and continues upwards around the edge of the primary dust collection umbrella 11. The fine dust particles, due to their greater inertia, cannot rotate synchronously with the airflow and instead collide with and are intercepted on the bottom surface of the first dust-collecting umbrella 11. At the same time, the water mist carried by the rising airflow also impacts the bottom surface of the first dust-collecting umbrella 11, keeping it moist and forming a water film. The fine dust particles collide with and adhere to the water film. The first dust-collecting umbrella 11 uses the principle of inertia to intercept and capture the fine dust in the central rising airflow, while simultaneously using the water film on the umbrella surface to adhere and capture the fine dust, thus keeping the umbrella surface moist without the need for separate water supply.

[0027] like Figure 2 As shown, the fine dust capturing mechanism also includes a second suction umbrella 12. The second suction umbrella 12 is located inside the vortex tube 1, with its tip pointing upwards. The second suction umbrella 12 is located directly below the first suction umbrella 11. In actual use, the second suction umbrella 12 is located directly below the first suction umbrella 11 with its tip pointing upwards. The central rising airflow first hits the bottom surface of the second suction umbrella 12 and turns, then continues to rise after bypassing the edge of the second suction umbrella 12, and then hits the bottom surface of the first suction umbrella 11 and turns again. The rising airflow undergoes two turns during its ascent, and the fine dust particles are intercepted and captured by the second suction umbrella 12 and the first suction umbrella 11 at the two turns respectively. The two-stage capturing structure of the second suction umbrella 12 and the first suction umbrella 11 allows the rising airflow to undergo two turns, resulting in two inertial interceptions of the fine dust, thus improving the fine dust capture effect.

[0028] like Figure 2 As shown, the diameter of the second suction umbrella 12 is smaller than the diameter of the first suction umbrella 11. In actual use, the diameter of the second suction umbrella 12 is smaller than the diameter of the first suction umbrella 11. A larger annular gap is formed between the edge of the second suction umbrella 12 and the inner wall of the vortex tube 1, while a smaller annular gap is formed between the edge of the first suction umbrella 11 and the inner wall of the vortex tube 1. The central rising airflow is deflected by the bottom surface of the second suction umbrella 12 and flows from the edge of the second suction umbrella 12 to the inner wall of the vortex tube 1. The airflow passes through the annular gap between the two stages, then impacts the bottom surface of the first dust-collecting umbrella 11 and turns, passing through the annular gap between the edge of the first dust-collecting umbrella 11 and the inner wall of the vortex tube 1, and finally enters the exhaust pipe 6; the larger annular gap on the edge of the second dust-collecting umbrella 12 facilitates the passage of the rising airflow and achieves the first turning and capture, while the smaller annular gap on the edge of the first dust-collecting umbrella 11 gathers the airflow and achieves the second turning and capture. The two umbrellas work together to make the airflow turn step by step, taking into account both the airflow passage capacity and the fine dust capture effect.

[0029] The No. 1 dust collection umbrella 11 is made of corrosion-resistant metal plate (such as stainless steel). The bottom surface of the No. 1 dust collection umbrella 11 is roughened by sandblasting. The No. 1 dust collection umbrella 11 is made of corrosion-resistant metal plate, which can adapt to the environment of water mist and dust-laden airflow in the cyclone tube 1. After the bottom surface of the No. 1 dust collection umbrella 11 is roughened by sandblasting, a micro-rough structure is formed on the bottom surface, which enhances hydrophilicity. After the water mist hits the bottom surface of the No. 1 dust collection umbrella 11, it is easy to spread on the bottom surface to form a continuous water film. The roughened bottom surface of the No. 1 dust collection umbrella 11 is conducive to the formation and spread of the water film. The water film coverage is uniform, which enhances the adhesion and capture effect of fine dust. At the same time, the use of corrosion-resistant metal plate extends the service life of the No. 1 dust collection umbrella 11.

[0030] The No. 2 dust collection umbrella 12 is made of corrosion-resistant metal plate, and its bottom surface is roughened by sandblasting. In actual use, the No. 2 dust collection umbrella 12, made of corrosion-resistant metal plate, can adapt to the environment of water mist and dust-laden airflow inside the cyclone tube 1. After the bottom surface of the No. 2 dust collection umbrella 12 is roughened by sandblasting, a micro-rough structure is formed on the bottom surface, which enhances hydrophilicity. After the water mist hits the bottom surface of the No. 2 dust collection umbrella 12, it is easy to spread and form a continuous water film on the bottom surface. The roughened bottom surface of the No. 2 dust collection umbrella 12 facilitates the formation and spread of the water film, and the water film coverage is uniform, which enhances the adhesion and capture effect of fine dust. At the same time, the use of corrosion-resistant metal plate extends the service life of the No. 2 dust collection umbrella 12.

[0031] like Figure 2 As shown, both the first and second vacuum umbrellas 11 and 12 are located on the path of the rising airflow at the center after the water bath reversal in the conical cylinder 5. The water mist carried by the rising airflow impacts the bottom surfaces of the first and second vacuum umbrellas 11 and 12, wetting them and forming a water film. The water film flows along the bottom surfaces of the first and second vacuum umbrellas 11 and 12, adhering to fine dust before dripping back from the edges of the first and second vacuum umbrellas 11 and 12. In actual use, both the first and second vacuum umbrellas 11 and 12 are located on the path of the rising airflow at the center after the water bath reversal in the conical cylinder 5. After the water bath reversal in the conical cylinder 5, the rising airflow carrying water mist moves upward. Water mist sequentially impacts the bottom surfaces of the second and first dust-collecting umbrellas 12 and wets them, forming a water film on their bottom surfaces. As the water film flows along the bottom surfaces, it adheres to fine dust particles. The water film carrying the fine dust particles flows along the bottom surfaces of the first and second dust-collecting umbrellas 11 and drips from their edges, flowing back into the water collection tank 4. By using water mist to keep the umbrella surfaces of the first and second dust-collecting umbrellas 11 and 12 moist, there is no need to install pipes to supply water to the umbrella surfaces. The structure is simple. The fine dust particles adhered to the water film drip back into the water collection tank 4 with the water film, achieving continuous capture and centralized collection of fine dust particles.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cutting dust wet spray dust-settling device for wood processing, characterized by, It includes a cyclone drum (1) and a dust collection hood (2). The dust collection hood (2) covers the saw blade. A conveying pipe (3) is provided between the dust collection hood (2) and the cyclone drum (1). A fan is installed in the conveying pipe (3). The fan is used to tangentially convey the dust generated by the saw blade cutting inside the dust collection hood (2) into the cyclone drum (1) through the conveying pipe (3). An overflow water supply mechanism is installed on the cyclone cylinder (1). The overflow water supply mechanism is used to evenly flow the spray water on the inner wall of the cyclone cylinder (1). When the dust-laden airflow blows towards the inner wall of the cyclone cylinder (1), the dust in the dust-laden airflow mixes with the water liquid on the inner wall of the cyclone cylinder (1) to achieve dust reduction. A water collection tank (4) is installed at the bottom of the vortex tube (1), and a conical tube (5) is installed at the connection between the vortex tube (1) and the water collection tank (4). The cyclone tube (1) is also equipped with a fine dust capture mechanism, which is used to capture fine dust in the airflow after spraying and dust suppression. An exhaust pipe (6) is installed through the middle of the top of the vortex tube (1), and the bottom end of the exhaust pipe (6) penetrates the top of the vortex tube (1) and extends into the interior of the vortex tube (1).

2. The wet spray dust suppression device for cutting dust in wood processing according to claim 1, characterized in that, The overflow water supply mechanism includes an annular water tank (7) and an inlet pipe (8); the annular water tank (7) is fitted around the outer periphery of the vortex cylinder (1), and the inner ring of the annular water tank (7) is provided with an overflow port that communicates with the vortex cylinder (1). The water in the annular water tank (7) flows to the inner wall of the vortex cylinder (1) through the overflow port. One end of the inlet pipe (8) is connected to the annular water tank (7), and the other end of the inlet pipe (8) is connected to the water supply device.

3. The wet spray dust suppression device for cutting dust in wood processing according to claim 2, characterized in that, The overflow water supply mechanism also includes an overflow weir plate (9); the overflow weir plate (9) is installed at the overflow port, and the top surface of the overflow weir plate (9) is provided with multiple overflow gaps (10) in the circumferential direction, and the water in the annular water tank (7) flows to the inner wall of the vortex cylinder (1) through the overflow gaps (10).

4. A wet spray dust suppression device for cutting dust in wood processing according to claim 3, characterized in that, The overflow water supply mechanism also includes a spiral guide bar (13); the spiral guide bar (13) is spirally arranged on the inner wall of the vortex cylinder (1).

5. A wet spray dust suppression device for cutting dust in wood processing according to claim 1, characterized in that, The fine dust capturing mechanism includes a first dust-collecting umbrella (11); the first dust-collecting umbrella (11) is located inside the vortex tube (1), and the tip of the first dust-collecting umbrella (11) is facing upward.

6. A wet spray dust suppression device for cutting dust in wood processing according to claim 5, characterized in that, The fine dust capture mechanism also includes a second dust-collecting umbrella (12); the second dust-collecting umbrella (12) is located inside the vortex tube (1), with the tip of the second dust-collecting umbrella (12) pointing upwards, and the second dust-collecting umbrella (12) is located directly below the first dust-collecting umbrella (11).

7. A wet spray dust suppression device for cutting dust in wood processing according to claim 6, characterized in that, The diameter of the second vacuum umbrella (12) is smaller than the diameter of the first vacuum umbrella (11).

8. A wet spray dust suppression device for cutting dust in wood processing according to claim 7, characterized in that, The first dust-collecting umbrella (11) is made of corrosion-resistant metal plate, and the bottom surface of the first dust-collecting umbrella (11) is roughened by sandblasting.

9. A wet spray dust suppression device for cutting dust in wood processing according to claim 8, characterized in that, The second dust-collecting umbrella (12) is made of corrosion-resistant metal plate, and the bottom surface of the second dust-collecting umbrella (12) is roughened by sandblasting.

10. A wet spray dust suppression device for cutting dust in wood processing according to claim 9, characterized in that, The first dust-collecting umbrella (11) and the second dust-collecting umbrella (12) are both located on the path of the rising airflow in the center after the water bath of the conical cylinder (5). The water mist carried by the rising airflow hits the bottom surface of the first dust-collecting umbrella (11) and the second dust-collecting umbrella (12) and wets the bottom surface of both to form a water film. The water film flows along the bottom surface of the first dust-collecting umbrella (11) and the second dust-collecting umbrella (12) and adheres to the fine dust before dripping back from the edge of the first dust-collecting umbrella (11) and the second dust-collecting umbrella (12).

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