Centrifugal dust collector

Abstract

The invention relates to the technical field of cyclone dust collectors, in particular to a centrifugal dust collector which comprises an air inlet pipe, an exhaust pipe, a cylinder, a cone and an ash hopper, the air inlet pipe is mounted on the side face of the cylinder and tangent to the cylinder, the exhaust pipe is fixedly mounted on the cylinder and coaxial with the cylinder, the cone is mounted below the cylinder, and the ash hopper is mounted below the cylinder. The ash hopper is installed below the cone, an air spraying pipe is installed at an air outlet of the draught fan, and the pipe diameter of the air spraying pipe is smaller than that of the exhaust pipe. A high-speed air flow is jetted into the exhaust pipe at the position close to the pipe opening of the exhaust pipe according to the Bernoulli principle, bypass air flow is forced to flow into the exhaust pipe under the influence of the flow speed and pressure intensity difference, and therefore the flow speed of inner vortex ascending air flow is increased, and a better effect in a traditional using method can be achieved through a lower-power fan; the problem of vortex dust raising in the ash discharge port is solved, meanwhile, energy consumption of an external fan is reduced, and the purposes of saving energy, protecting the environment and reducing the production cost are achieved.

Description

Technical Field

[0001] This invention relates to the field of cyclone dust collector technology, specifically a centrifugal dust collector. Background Technology

[0002] A cyclone dust collector is a type of centrifugal dust collector. Its dust removal mechanism involves rotating the dust-laden airflow, using centrifugal force to separate dust particles from the airflow and collect them on the collector wall. Gravity then causes the dust particles to fall into the ash hopper. A cyclone dust collector consists of an inlet pipe, an outlet pipe, a cylindrical body, a conical body, and an ash hopper. Cyclone dust collectors have a simple structure, are easy to manufacture, install, and maintain, and have low equipment investment and operating costs. They are widely used to separate solid and liquid particles from airflows, or to separate solid particles from liquids.

[0003] Cyclone dust collectors are a commonly used dust removal device, and improving their dust separation efficiency has always been a research hotspot both domestically and internationally. Modern cyclone dust collectors can essentially remove particles larger than 8–10 μm. They also have good dust removal efficiency for particles larger than 5 μm. However, due to their lower separation efficiency, they are not yet widely used in industry for fine dust particles smaller than 5 μm. The internal vortex generated at the ash discharge port during the operation of a cyclone dust collector is a major factor affecting its separation efficiency. When the dust-laden airflow enters the cyclone dust collector tangentially from the inlet, it rotates downwards along the wall of the collector. This downward rotating airflow is called the outer vortex. When the outer vortex reaches the bottom of the cone, it rotates upwards along the axis and is finally discharged through the discharge pipe. This upward rotating airflow is called the inner vortex. In a typical cyclone dust collector, when the rotating airflow changes from the outer vortex to the inner vortex, it will stagnate at the ash discharge port. The stagnant inner vortex will cause dust to be stirred up at the ash discharge port, entraining the dust into the rising vortex and causing a decrease in separation efficiency. Existing cyclone dust collectors improve separation efficiency by adding an exhaust fan at the exhaust port to extract the internal vortex generated within the cone. By increasing the velocity of the internal vortex, the airflow field within the cone is optimized, reducing the amount of internal vortex stagnating at the ash discharge port and preventing dust generation. However, adding an exhaust fan at the exhaust port requires a high-power fan to achieve the desired effect, which leads to excessive energy consumption and is not conducive to long-term production.

[0004] To address this issue, a centrifugal dust collector is proposed. Utilizing Bernoulli's principle, a high-speed airflow is injected into the exhaust pipe near the outlet, forcing the bypass airflow to rush into the exhaust pipe under the influence of the velocity-pressure difference. This accelerates the flow rate of the internal vortex rising airflow, achieving better results than traditional methods with a smaller power fan. This solves the problem of vortex dust generation within the ash discharge port while reducing the energy consumption of the external fan, thus achieving the goals of energy conservation, environmental protection, and reduced production costs. Summary of the Invention

[0005] The purpose of this invention is to provide a centrifugal dust collector that utilizes Bernoulli's principle to inject a high-speed airflow into the exhaust pipe near the exhaust pipe opening. This forces the bypass airflow to rush into the exhaust pipe under the influence of the velocity-pressure difference, thereby accelerating the flow rate of the internal vortex rising airflow. This allows for better performance than traditional methods using a smaller power fan, reducing the energy consumption of the external fan and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A centrifugal dust collector includes an inlet pipe, an outlet pipe, a cylindrical body, a cone, and a dust hopper. The inlet pipe is installed on the side of the cylindrical body and is tangential to the cylindrical body. The outlet pipe is fixedly installed on the cylindrical body and is coaxial with the cylindrical body. The cone is installed below the cylindrical body, and a dust discharge port is provided below the cone. The dust hopper is installed below the cone. An airflow regulating device is provided inside the cylindrical body. The airflow regulating device is used to accelerate the flow rate of the rising airflow in the internal vortex, reduce the internal vortex flow stagnating at the dust discharge port to avoid dust generation, improve separation efficiency, and reduce the power consumption of the fan.

[0008] Preferably, the airflow regulating device includes a fan, and a jet pipe is installed at the fan outlet. The jet pipe opening is located below the exhaust pipe, and the jet pipe diameter is smaller than that of the exhaust pipe. The jet pipe is inserted into the cylindrical body from the ash discharge port below the cone and is coaxial with the exhaust pipe and the cylindrical body. When the airflow in the fan is blown out from the smaller diameter jet pipe, the airflow velocity in the jet pipe will be greater than the velocity blown out from the fan outlet. When the faster airflow in the jet pipe is ejected from the outlet and enters the exhaust pipe, the lower velocity of the rising vortex inside the cylindrical body will be reduced. The velocity of the gas ejected from the nozzle of the jet pipe is greater than that of the bypass airflow at the center of the exhaust pipe. The resulting velocity-pressure difference forces the bypass airflow to rush into the exhaust pipe quickly, thereby accelerating the upward velocity of the internal vortex airflow. By coaxializing the jet pipe with the exhaust pipe and the cylindrical body, the vortex at the center of the dust collector is suppressed, thus improving the dust removal efficiency. Based on Bernoulli's principle, the velocity-pressure difference is used to accelerate the bypass airflow. Compared with the traditional method of installing a fan in the exhaust pipe, the airflow discharged from the exhaust pipe is 2-4 times that of the traditional method.

[0009] Preferably, the diameter of the jet pipe inlet is smaller than the jet pipe diameter. A cleaning device is installed on the jet pipe to prevent clogging of the ash discharge port due to excessively sticky particles in the dust-laden gas. The cleaning device includes a housing, a base installed inside the housing, two guide vanes installed on the base, two strip-shaped holes on the jet pipe, and the guide vanes movably installed in the strip-shaped holes. A first guide hole is provided inside the jet pipe, and a second guide hole is provided on the base. A rotor is installed outside the housing, and a [missing information - likely a device or component] is installed on the rotor. Multiple metal plates, located at the ash discharge port, are blade-shaped. By reducing the diameter of the jet pipe opening, the velocity of the ejected gas is accelerated, enhancing the velocity-pressure difference and increasing the velocity of the rising airflow within the internal vortex. The working area of ​​the cyclone dust collector is located in the conical section below the cylindrical body. Centrifugal force is used to throw dust particles onto the inner wall, which are then discharged from the ash discharge port under gravity. As the dust-laden gas rotates downwards, the radius of rotation of the conical section gradually decreases while the velocity remains constant, and the centrifugal force on the dust particles in the gas gradually increases. Therefore, it can be concluded that... A smaller cone-shaped ash discharge port results in greater centrifugal force, which is more beneficial for dust removal. However, when the dust-laden gas contains a large number of dust particles or the particles are highly viscous, an excessively small diameter will cause the ash discharge port to become clogged, rendering the cyclone dust collector inoperable. By installing a cleaning device at the ash discharge port, the airflow in the jet pipe drives a metal plate to rotate, preventing clogging. When the airflow in the jet pipe blows from bottom to top, a small portion of the airflow will flow out of the jet pipe through guide hole one under the action of the guide plate and flow into the rotor through guide hole two. The airflow drives the rotor to rotate, simultaneously driving the metal plate installed on the rotor... The rotating metal blades scrape off dust particles adhering to the exhaust port. By shaping the metal blades into blades, they generate an airflow opposite to the upward airflow of the inner vortex. By drawing air from the dust exhaust port, as much dust in the dust-laden gas as possible, which has not yet been thrown to the cylinder wall, is kept in the outer vortex area under the pull of the opposite airflow, preventing dust from escaping from the inner vortex. This reduces particle back-mixing caused by the inner vortex and improves dust removal efficiency. At the same time, it can also optimize the internal flow field of the separator and reduce the phenomenon of dust back-mixing at the ash discharge port.

[0010] In this invention, the cleaning device can also be a scraper that rotates around the jet pipe. The scraper is parallel to the inner wall of the cone and 5mm away from the inner wall. When the scraper rotates, it continuously cleans the dust adhering to the inner wall of the cone. The scraped dust falls from the inner wall into the ash hopper below. However, compared with the blade shape, its exhaust performance is weak and cannot optimize the particle back-mixing caused by the internal swirling flow.

[0011] Preferably, the inner wall of the outer casing is provided with multiple paddles that cooperate with the guide vanes. A knob is fixedly installed at the bottom of the outer casing. The guide vanes are rotatably mounted on the base via torsion springs. Turning the knob by hand causes the outer casing to rotate. When the outer casing rotates, the paddles on the inner wall actuate the guide vanes, causing them to rotate from the outside to the inside within the slotted holes. When the knob is turned in the opposite direction, the guide vanes rotate from the inside to the outside under the action of the torsion springs. By controlling the rotation angle of the guide vanes with the knob, the rotor air intake can be adjusted, thereby adjusting the rotation speed of the metal plates. When the cyclone dust collector is large, a larger power fan is also required. When using matching equipment, any favorable factor in a cyclone dust collector can become unfavorable when it is excessive. When the airflow velocity in the jet pipe is too high, it will cause the metal plate to rotate too fast. The excessively fast rotation speed will cause airflow turbulence at the ash discharge port of the cone, affecting the dust removal efficiency. At the same time, it will also cause the dust particles already collected in the ash hopper below to be lifted again and carried out by the upward swirling airflow, further affecting the dust removal efficiency. By rotating the knob to control the rotation angle of the guide vane, the air intake of the rotor can be controlled, so as to adjust the rotation speed of the metal plate under different equipment conditions, avoiding the secondary back mixing caused by airflow turbulence inside the cyclone dust collector and dust particles being lifted due to excessive rotation speed.

[0012] Preferably, a humidifying device is installed in the cylindrical body. This humidifying device increases the weight of dust particles in the airflow, increasing the centrifugal force and improving the dust removal effect. The humidifying device includes a second outer shell, which is mounted on the jet pipe. Six ultrasonic atomizers are installed inside the second outer shell. Multiple spray holes are arrayed on the outer wall of the second outer shell. A third outer shell is installed above and below the second outer shell. The humidifying device is located near the ash discharge port and above the metal plate. The third outer shell has a conical structure. Because the working principle of the cyclone dust collector is to remove dust from the dust-laden gas through centrifugal force, when the dust particle size is below 5μm, the centrifugal force is insufficient to throw the dust onto the conical cylinder wall, thus preventing removal by the equipment. Finally, when it reaches the bottom of the cone, it is discharged from the ash discharge port with the rising airflow from the internal vortex. By installing ultrasonic atomizers above the metal plate and utilizing the accelerated rising airflow from the jet pipe, the airflow is swirled... As the humidifier rises, it comes into contact with the water vapor humidified by the ultrasonic atomizer. The water vapor liquefies and condenses on the surface of the particles, forming dust-laden droplets. The fine particles that are about to condense agglomerate and grow, increasing their mass. They are then thrown out of the inner vortex into the outer vortex. The condensed particles that reach the outer vortex are discharged from the ash discharge port into the ash hopper under the action of centrifugal force, thus completing the collection. This avoids the problem of low separation efficiency caused by insufficient centrifugal force for fine dust. Since there is still a rotating airflow at the end of the cone, it is easy to roll the dust particles at the ash discharge port into the rising vortex. Therefore, the humidifier is placed above the ash discharge port to act as an anti-mixing cone, reducing the tangential and axial velocities and turbulence intensity of the flow field in the ash discharge port. This has a significant inhibitory effect on the particle back-mixing phenomenon caused by the secondary flow in the ash discharge port of the cyclone dust collector. By setting the outer shell into a conical structure, the resistance and velocity loss when the upward swirling airflow comes into contact with the humidifier can be reduced, improving the stability of the entire airflow field.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. Utilizing Bernoulli's principle, a high-speed airflow is injected into the exhaust pipe near the exhaust pipe opening, forcing the bypass airflow to rush into the exhaust pipe under the influence of the velocity and pressure difference. This accelerates the flow rate of the rising airflow in the internal vortex, achieving better results with a smaller fan than traditional methods. When the dust-laden gas contains a large number of dust particles or the dust particles are highly viscous, an excessively small diameter will cause the ash discharge port to become clogged, preventing the cyclone dust collector from working. By installing a cleaning device at the ash discharge port, the airflow in the jet pipe drives the metal plate to rotate, preventing the ash discharge port from becoming clogged.

[0015] 2. Because cyclone dust collectors have low separation efficiency for fine dust particles smaller than 5μm, an ultrasonic atomizer is installed above the metal plate. This allows the rising airflow from the internal vortex to come into contact with the humidified water vapor from the ultrasonic atomizer as it rotates and rises. The water vapor liquefies and condenses on the surface of the particles, forming dust-laden droplets. This increases the mass of the fine particles and the centrifugal force they experience, thus improving the separation efficiency of the cyclone dust collector for fine dust. At the same time, thanks to the action of the ultrasonic atomizer, the fan does not need to use excessively high power to maintain sufficient centrifugal force, significantly reducing the fan's power consumption.

[0016] 3. Since there is still rotating airflow at the end of the cone, it is easy to roll the dust particles at the dust discharge port into the rising vortex. By placing the humidifier above the dust discharge, it is possible to prevent the rotating airflow from entering the dust storage area. By setting the outer shell into a cone-shaped structure, the resistance and velocity loss when the upward airflow comes into contact with the humidifier can be reduced, thereby improving the stability of the entire airflow field. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 For the present invention Figure 2 Sectional view at point AA;

[0020] Figure 4 This is an exploded view of the humidification device in this invention;

[0021] Figure 5 This is a schematic diagram of the internal structure of the humidification device in this invention;

[0022] Figure 6 This is an exploded view of the cleaning device in this invention;

[0023] Figure 7 This is a schematic diagram of the jet pipe structure in this invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0025] Figure 9 This is a top view of the internal structure of the cleaning device in this invention.

[0026] In the diagram: 1. Inlet pipe; 2. Exhaust pipe; 3. Cylindrical body; 4. Conical body; 5. Ash hopper; 6. Fan; 7. Jet pipe; 8. Outer shell one; 9. Base; 10. Guide vane; 11. Strip-shaped hole; 12. Guide hole one; 13. Guide hole two; 14. Rotor; 15. Metal plate; 16. Paddle; 17. Knob; 18. Outer shell two; 19. Outer shell three; 20. Ultrasonic atomizer. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1, please refer to Figures 1 to 9 This invention provides a centrifugal dust collector. When the processed dust-laden gas does not have specific humidity requirements for the discharged gas, the technical solution is as follows:

[0029] A centrifugal dust collector includes an inlet pipe 1, an exhaust pipe 2, a cylindrical body 3, a conical body 4, and a dust hopper 5. The inlet pipe 1 is installed on the side of the cylindrical body 3 and is tangent to the cylindrical body 3. The exhaust pipe 2 is fixedly installed on the cylindrical body 3 and is coaxial with the cylindrical body 3. The conical body 4 is installed below the cylindrical body 3. The dust hopper 5 is installed below the conical body 4. A jet pipe 7 is installed at the air outlet of a fan 6. The diameter of the jet pipe 7 is smaller than that of the exhaust pipe 2. The jet pipe 7 is inserted into the dust discharge port below the conical body 4. Within the cylindrical body 3, and coaxial with the exhaust pipe 2 and the cylindrical body 3, the nozzle of the jet pipe 7 is located below the exhaust pipe 2. The nozzle diameter of the jet pipe 7 is smaller than the diameter of the jet pipe 7. A cleaning device is installed on the jet pipe 7 to prevent clogging of the ash discharge port caused by excessively sticky particles in the dusty gas. The cleaning device includes a housing 8, inside which a base 9 is installed. Two guide vanes 10 are installed on the base 9. Two strip-shaped holes 11 are opened on the jet pipe 7. The 0 is installed in the strip-shaped hole 11. The jet pipe 7 is provided with a guide hole 12. The base 9 is provided with a guide hole 23. The outer shell 18 is installed with a rotor 14. The rotor 14 is installed with a metal plate 15. The metal plate 15 is blade-shaped. The inner wall of the outer shell 18 is provided with multiple paddles 16 that cooperate with the guide plate 10. The bottom of the outer shell 18 is fixedly installed with a knob 17. The guide plate 10 is rotated on the base 9 by a torsion spring. The cylindrical body 3 is equipped with a humidifying device. The humidifying device is used to increase the weight of dust particles in the airflow, so that the centrifugal force they experience is greater, thus improving the dust removal effect. The humidifying device includes an outer shell 28, which is installed on the jet pipe 7. Six ultrasonic atomizers 20 are installed inside the outer shell 28. Multiple spray holes are arrayed on the outer wall of the outer shell 28. The outer shell 3 is installed above and below the outer shell 28. The humidifying device is close to the ash discharge port and located above the metal plate 15. The outer shell 3 is conical in structure.

[0030] Before formal use, check whether the inner walls of the cylinder 3 and the cone 4 are smooth and whether there are any holes or damage. The roughness and airtightness of the inner walls will directly affect the separation efficiency of the cyclone dust collector. First, connect the water source from the outer shell 3 19 to supply water to the ultrasonic atomizer 20. Then turn on the fan 6 and turn the knob 17 to adjust the speed of the metal plate 15 to a suitable speed to ensure that the speed will not stir up the dust particles in the ash hopper 5. Second, install the ash hopper 5 under the cone 4 and put a small amount of experimental dust into the air inlet pipe 1. Third, observe whether there is obvious dust or dust particles being blown out of the exhaust pipe 2. If there are obvious particles, adjust the distance between the nozzle of the jet pipe 7 and the nozzle of the exhaust pipe 2 and the speed of the metal plate 15 to a suitable parameter. If it is not possible to observe but a few fine particles can be collected, it is normal. When using it formally, turn on the ultrasonic atomizer 20 to solve this problem.

[0031] At the start of operation, dust-laden gas enters the cylindrical body 3 tangentially from the inlet pipe 1. Constrained by the inner wall of the cylindrical body 3, it begins to rotate downwards. As the dust-laden gas moves from the cylindrical body 3 to the cone 4, the centrifugal force gradually increases from top to bottom. Dust particles larger than 5μm in the gas are pushed against the cylinder wall under centrifugal force and finally discharged from the ash discharge port and collected by the ash hopper 5 under gravity. When the dust-laden gas continues to rotate downwards in the cone 4 and approaches the pipe opening, the outer vortex transforms into an inner vortex, rotating upwards around the axis of the cone 4 and exiting through the exhaust pipe 2. When dusty gas enters cylindrical body 3 tangentially, the rotating dust-laden gas inside will generate a small vortex at the center of cylindrical body 3. This vortex will affect the efficiency of the gas discharged from the inner vortex, thus affecting the equipment's operating efficiency. By adding an air jet pipe 7 at the central axis of cylindrical body 3, the small portion of airflow that would originally generate a vortex at the center is blocked by the air jet pipe 7, suppressing the generation of the vortex. When the dust-laden gas changes from an outer vortex to an inner vortex, it easily generates a rotating airflow at the end of the cone. By placing the humidification device at the end of the cone 4, the humidification device acts as an anti-mixing cone. This largely suppresses the back-mixing phenomenon that occurs when the airflow changes from an outer vortex to an inner vortex, trapping the separated dust below the humidifier to prevent it from escaping due to the influence of the inner vortex. When the metal plate 15 rotates, it optimizes the internal flow field of the separator through air extraction, reducing the re-mixing of dust at the ash discharge port. At this point, most of the dust particles in the dust-laden gas have been collected under the action of centrifugal force and gravity. However, some dust particles with a diameter less than 5μm still exist in the rising airflow of the inner vortex. These dust particles are carried to the vicinity of the humidifier by the upward swirling airflow and mix with the water near the humidifier. When steam comes into contact with the fine particles, the water vapor undergoes a phase change, liquefying and condensing on the surface of the fine particles to form dust-laden droplets. Due to changes in concentration and temperature, thermophoresis and diffusion occur simultaneously, promoting the migration and movement between the condensed fine particles. This increases the probability of particle collisions and agglomeration, increasing the mass of the fine particles and their equivalent gas dynamic diameter. As the fine particles agglomerate and grow, the centrifugal force increases, and they are thrown out of the inner vortex to the outer vortex. The condensed particles that reach the outer vortex are discharged from the ash discharge port into the ash hopper 5 under the action of centrifugal force, completing the collection process.

[0032] Example 2, please refer to Figures 1 to 9 This invention provides a centrifugal dust collector. When the processed dust-laden gas has humidity requirements for the discharged gas, the technical solution is as follows:

[0033] In Example 2, unlike Example 1, when the humidity of the processed dust-laden gas after discharge is not too high, the usage of the ultrasonic atomizer 20 can be reduced or its use can be suspended. Instead, the power of the fan 6 can be increased to accelerate the flow rate at the nozzle of the jet pipe 7, and the rotation speed of the metal plate 15 can be appropriately increased to accelerate the downward airflow. This improves the dust removal effect of the cyclone dust collector and adapts to the working conditions where the ultrasonic atomizer 20 cannot be used.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal dust collector, comprising an inlet pipe (1), an outlet pipe (2), a cylindrical body (3), a cone (4), and a dust hopper (5), wherein the inlet pipe (1) is installed on the side of the cylindrical body (3) and tangent to the cylindrical body (3), the outlet pipe (2) is fixedly installed on the cylindrical body (3) and coaxial with the cylindrical body (3), the cone (4) is installed below the cylindrical body (3), a dust discharge port is provided below the cone (4), and the dust hopper (5) is installed below the cone (4), characterized in that: An airflow regulating device is provided inside the cylindrical body (3). The airflow regulating device is used to accelerate the flow rate of the rising airflow in the inner vortex, reduce the internal vortex flow that lingers at the ash discharge port to avoid dust generation, improve separation efficiency, and reduce the operating power of the fan (6).

2. A centrifugal dust collector according to claim 1, characterized in that: The airflow regulating device includes a fan (6), and a jet pipe (7) is installed at the air outlet of the fan (6). The outlet of the jet pipe (7) is located below the exhaust pipe (2), and the diameter of the jet pipe (7) is smaller than that of the exhaust pipe (2).

3. A centrifugal dust collector according to claim 2, characterized in that: The jet pipe (7) is inserted into the cylindrical body (3) from the ash discharge port below the cone (4) and is coaxial with the exhaust pipe (2) and the cylindrical body (3).

4. A centrifugal dust collector according to claim 3, characterized in that: The diameter of the nozzle of the jet pipe (7) is smaller than the diameter of the jet pipe (7). A cleaning device is installed on the jet pipe (7). The cleaning device is used to prevent the dust discharge port from being blocked due to excessive stickiness of particles in the dust-laden gas.

5. A centrifugal dust collector according to claim 4, characterized in that: The cleaning device includes a housing (8), a base (9) is installed inside the housing (8), a plurality of guide vanes (10) are installed on the base (9), a plurality of strip holes (11) are opened on the jet pipe (7), the guide vanes (10) are movably installed in the strip holes (11), a first guide hole (12) is provided inside the jet pipe (7), a second guide hole (13) is provided on the base (9), a rotor (14) is installed outside the housing (8), a plurality of metal plates (15) are installed on the rotor (14), and the plurality of metal plates (15) are located at the ash discharge port.

6. A centrifugal dust collector according to claim 5, characterized in that: The plurality of the metal sheets (15) are blade-shaped.

7. A centrifugal dust collector according to claim 6, characterized in that: The inner wall of the outer shell (8) is provided with a plurality of paddles (16) that cooperate with the guide vane (10). A knob (17) is fixedly installed below the outer shell (8). The guide vane (10) is rotatably mounted on the base (9) by a torsion spring. A humidifying device is installed in the cylindrical body (3). The humidifying device is used to increase the weight of dust particles in the airflow so that the centrifugal force they receive increases and the dust removal effect is improved.

8. A centrifugal dust collector according to claim 7, characterized in that: The humidification device includes a second outer shell (18), which is mounted on a jet pipe (7). Multiple ultrasonic atomizers (20) are installed inside the second outer shell (18). Multiple spray holes are arrayed on the outer wall of the second outer shell (18). A third outer shell (19) is installed above and below the second outer shell (18).

9. A centrifugal dust collector according to claim 8, characterized in that: The humidification device is located near the ash discharge port and above the metal plate (15).

10. A centrifugal dust collector according to claim 8, characterized in that: The outer shell 3 (19) has a conical structure.

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