A plasma dust collector

Abstract

The present invention discloses a plasma dust collector in the field of exhaust gas treatment technology, including a shell, an air inlet pipe and an exhaust pipe are respectively arranged on both sides of the shell, an ash hopper is arranged at the bottom of the shell, and a plurality of groups of ionization generating parts and dust collecting parts arranged in a horizontal direction and corresponding to each other are arranged in the shell; the ionization generating part includes two components respectively arranged on both sides of the dust collecting part, and a plurality of groups of ionization wires are arranged in sequence from top to bottom between the two components; in this application, the plasma field generated between the ionization generating part and the dust collecting part is utilized to enable the dust collecting part to capture particulate matter in the exhaust gas, so as to achieve the effect of exhaust gas dust removal, and the dust collecting part can rotate by itself, and the dust brush at the bottom can automatically clean the dust to maintain the efficient operation of the plasma field. The use of this plasma dust removal technology equipment to update the existing dust removal equipment can greatly reduce the operating energy consumption and maintenance cost of the dust removal device under the condition of ensuring stable production, reduce the frequency of shutdown for manual cleaning, and meet the demand for further emission reduction of waste gas in industrial production.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas treatment, in particular to a plasma dust collector. Background Art

[0002] In the process of industrial production, a large amount of tail gas containing dust particles will be generated. For example, in the process of salt production, alkali production and other chemical production processes, tail gas containing a large amount of dust particles will be generated. In order to ensure that the tail gas emissions meet the standards, the tail gas needs to be treated and purified. At present, bag dust collectors or electrostatic dust collectors are generally used to capture and recycle dust. Due to the technical principles of these two types of dust removal equipment, the dust removal operation energy consumption is relatively high, and the maintenance volume is also high during use. The longer the service life, the worse the dust removal effect.

[0003] Traditional dust collectors have outdated technology, so the energy consumption of the equipment has always remained high. Among them, the bag dust collector has a very large wind resistance in the equipment cavity due to its structural principle. Take a bag dust removal equipment with a processing capacity of 100,000 cubic meters as an example: an additional 132kw high-power induced draft fan is required to meet the designed air volume; the cleaning method is pulse cleaning, and the annual gas consumption is as high as 5.5 million cubic meters; and although the electrostatic precipitator adopts a plate design with low wind resistance, it has its own performance limit, the equipment is large in size, the working voltage is high, the discharge electrode spacing is large, the static electricity generation efficiency is low, and once the voltage is reduced, it basically cannot meet the dust removal needs, and the cleaning is difficult. The dust content of the flue gas after leaving the equipment remains high, and the consumption of circulating water in the back-end washing tower is greatly increased. Summary of the invention

[0004] The object of the present invention is to provide a plasma dust collector to solve the problems of the traditional dust collector mentioned in the above background technology, such as outdated technology, high equipment energy consumption, frequent manual cleaning, many wearing parts and high maintenance.

[0005] To achieve the above object, the present invention provides the following technical solution: a plasma dust collector, comprising a shell, an air inlet pipe and an exhaust pipe are respectively arranged on both sides of the shell, an ash hopper is arranged at the bottom of the shell, and a plurality of ionization generating parts and dust collecting parts are arranged in sequence in a horizontal direction and correspond to each other one by one in the shell;

[0006] The arrangement direction of the plurality of groups of ionization generating parts and the plurality of groups of dust collecting parts is perpendicular to the flow direction of the exhaust gas;

[0007] The ionization generating part comprises two mounting parts respectively arranged on both sides of the dust collecting part, and a plurality of groups of ionization wires are arranged in sequence from top to bottom between the two groups of mounting parts; the exhaust gas enters the shell through the air inlet pipe, and the ionization wires of the ionization generating part are energized to work, so that the particulate matter in the exhaust gas is captured by the dust collecting part, and then the exhaust gas is discharged from the exhaust pipe.

[0008] Preferably, the dust collecting part comprises two mounting frames respectively mounted on the upper and lower sides of the inner cavity of the shell, the two mounting frames are provided with a rotating shaft, a dust collecting net is provided between the two sets of rotating shafts, and a driving mechanism is provided on the mounting frame to drive the rotating shaft to rotate and drive the dust collecting net;

[0009] Wherein, two dust brushes are arranged on the lower mounting frame, which are respectively located inside and outside the dust collecting net.

[0010] Preferably, the ionization wire is formed by spirally weaving a plurality of groups of rare earth alloy wires with different wire diameters.

[0011] Preferably, a mounting ring coaxial with the intake pipe is provided in the intake pipe, and a baffle for isolating the intake pipe and an elastic member connected to the baffle are hinged on the side of the mounting ring facing the shell. An air inlet located inside the baffle is opened on the intake pipe, and an air supply device is connected to the air inlet. The mounting ring is provided with a touch switch for fitting with the baffle and controlling the operation of the air supply device.

[0012] Preferably, an airflow detection device for detecting the airflow inside the exhaust pipe is provided in the exhaust pipe, and a controller for receiving information from the airflow detection device and controlling the operation of the air supply device according to the information is provided on the exhaust pipe.

[0013] Preferably, there are two baffles, and the two baffles are symmetrically hinged on the mounting ring.

[0014] Preferably, the baffle comprises a mounting plate hinged on a mounting ring, and a movable plate is hinged on one side of two sets of mounting plates close to each other;

[0015] In which, the mounting plate is provided with a slot on the side facing the movable plate, and a limiting slot is provided on the side facing the mounting plate. A limiting block inserted in the limiting slot and a return spring for pulling the limiting block to move into the slot are slidably provided in the slot. The mounting plate is provided with an opening on the side facing the mounting ring. A push block that fits the mounting ring and is used to limit the limiting block and an elastic element connected to the push block are slidably inserted in the opening, and the contact area between the push block and the limiting block is an arc surface.

[0016] Preferably, a limiting member for limiting the rotation angle of the movable plate is provided on the mounting plate.

[0017] Preferably, a magnetic block for adsorbing the movable plate is provided on the mounting ring.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the plasma field generated between the ionization generating part and the dust collecting part is used in the present application to enable the dust collecting part to capture particulate matter in the exhaust gas, thereby achieving the effect of exhaust gas dust removal. By adopting plasma dust removal technology equipment to replace bag dust collectors or electrostatic dust collectors, the need to regularly replace filter bags using bag dust collectors is avoided, and several dust collecting parts are perpendicular to the direction of the flue gas, which can minimize the wind resistance of the equipment without losing the effective dust filtering area, and the pressure loss can be ignored, which not only greatly reduces the dust removal operation and maintenance costs while ensuring stable production. The automatic dust cleaning system solves the problem of frequent shutdowns for manual dust cleaning, but also meets the needs of further reducing waste gas emissions in industrial systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the plasma dust collector of the present invention;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the shell of the present invention;

[0021] Figure 3 This is an enlarged schematic diagram of the structure at A of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the dust collecting part of the present invention;

[0023] Figure 5 It is an enlarged schematic diagram of the structure at B of the present invention;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the air intake pipe of the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the exhaust pipe of the present invention;

[0026] Figure 8 This is a schematic diagram of the baffle structure of the present invention;

[0027] Fig. 9 This is an enlarged schematic diagram of the structure at position C of the present invention;

[0028] Fig.10 It is an enlarged schematic diagram of the structure at D of the present invention.

[0029] In the figure: 1. shell; 2. air inlet pipe; 3. exhaust pipe; 4. ash hopper; 5. ionization generating part; 51. mounting part; 52. ionization wire; 6. dust collecting part; 61. mounting frame; 611. dust brush; 62. rotating shaft; 63. dust collecting net; 64. driving mechanism; 7. mounting ring; 8. baffle; 81. mounting plate; 811. slot; 812. push block; 813. limit block; 814. reset spring; 82. movable plate; 821. limit slot; 83. limit part; 9. air inlet; 10. air flow detection equipment; 11. magnetic block; 12. touch switch. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1 and Figure 2 A plasma dust collector comprises a shell 1, an air inlet pipe 2 is connected to the left side of the shell 1, an exhaust pipe 3 is connected to the right side of the shell 1, and an ash hopper 4 is connected to the bottom of the shell 1.

[0033] It should be noted that a discharge port is provided at the bottom of the shell 1, and the discharge port is funnel-shaped, so that dust can enter the ash hopper 4 through the discharge port; and the ash hopper 4 is detachably connected to the shell 1, so that the ash hopper 4 can be removed.

[0034] See also Figure 2 , Figure 3 and Figure 4 A plurality of groups of ionization generating parts 5 and a plurality of groups of dust collecting parts 6 are arranged in the shell 1, and the plurality of groups of ionization generating parts 5 correspond to the plurality of groups of dust collecting parts 6 one by one (the dust collecting parts 6 and the ionization generating parts 5 are arranged one before the other), and both are arranged in sequence along the horizontal direction (arranged in sequence from front to back according to the direction shown in the attached drawing), and the arrangement direction of the two is perpendicular to the flow direction of the exhaust gas.

[0035] See also Figure 2 and Figure 3 The ionization generating part 5 includes two mounting parts 51 (the mounting parts 51 are composed of two insulating parts and a tension rod installed between the two insulating parts), and the two mounting parts 51 are respectively located on the left and right sides of the dust collecting part 6. A plurality of groups of ionization wires 52 (the ionization wires 52 are installed on the tension rod) are arranged in sequence from top to bottom between the two mounting parts 51, and the plane formed by the plurality of groups of ionization wires 52 is parallel to the dust collecting part 6.

[0036] Working principle: After the exhaust gas enters the shell 1 through the intake pipe 2, the ionization wire 52 of the ionization generating part 5 is energized and the dust collecting part 6 is grounded, so that a plasma field is generated between the ionization generating part 5 and the dust collecting part 6; when the exhaust gas passes through the ionization generating part 5 and the dust collecting part 6, the particulate matter in the exhaust gas is captured by the dust collecting part 6, and then the exhaust gas is discharged from the exhaust pipe 3.

[0037] It should be noted that the technical principle of the plasma dust collector is to ionize the air around the negative electrode into a plasma state, continuously forming free radicals rich in a large number of negative ions to evenly cover the flue gas channel; the particulate matter (particle size ≥ 0.01μm) passing through the channel will be wrapped by the free radicals as condensation nuclei, aggregated and moved to the positive electrode, and bound and accumulated on the positive electrode to a certain concentration.

[0038] In this embodiment, as a further optimized solution, please refer to Figure 4 and Figure 5 The dust collecting part 6 includes two mounting frames 61 respectively mounted on the upper and lower sides of the inner cavity of the shell 1, and the two mounting frames 61 are provided with a rotating shaft 62. A dust collecting net 63 is provided between the two sets of rotating shafts 62, and the head and tail ends of the dust collecting net 63 are connected. The dust collecting net 63 is sleeved on the two rotating shafts 62, and a driving mechanism 64 (such as a motor) is provided on the mounting frame 61, and the output shaft of the motor is connected to the rotating shaft 62; two dust brushes 611 are provided on the lower mounting frame 61, and the two dust brushes 611 are respectively fitted with the inner wall and the outer wall of the dust collecting net 63; when a certain amount of dust accumulates on the dust collecting net 63 of the dust collecting part 6, the driving mechanism 64 works to rotate the rotating shaft 62, and the dust collecting net 63 is driven, so that the dust brush 611 cleans the dust collecting net 63 from the inside and the outside.

[0039] It should be noted that the dust collecting net 63 is a woven mesh grid structure, and several dust collecting parts 6 are perpendicular to the direction of the flue gas. Without losing the effective dust filtering area, the wind resistance of the equipment is minimized to the maximum extent, and the pressure loss is negligible; and the dust collecting part 6 adopts a rotating self-cleaning design, and the dust brush 611 at the lower part of the structure continuously removes the dust on the surface of the dust collecting net 63 during the uniform rotation of the dust collecting net 63, without generating secondary dust; a sonic wave and pulse dust collector are installed inside the shell 1 to clean the components inside the shell 1; compared with the bag dust collector, the dust collection system adopts a self-cleaning design to save the gas consumption of all bag pulse backblowing, and only a small amount of compressed air is required to regularly clean the ash hopper 4, the inner cavity and the insulating parts; and there is no need to regularly replace the filter bag like a bag dust collector, zero consumables, and reduced costs.

[0040] In this embodiment, as a further optimized solution, please refer to Figure 3The ionization wire 52 is formed by spirally weaving several groups of rare earth alloy wires with different wire diameters; wherein, the ionization wire 52 is formed by two main wires intertwined with each other (the wire diameter of the main wire is 0.4mm), and the outer wall of the main wire is wound with several ionization wire bodies (the wire diameter of the ionization wire body is 0.15mm, and the spacing between adjacent ionization wire bodies is 0.5㎜), and the outer diameter of the ionization wire 52 is less than 1.5mm; compared with the cathode wire of the traditional electrostatic precipitator, the generating stage of this structure has the characteristics of small ionization spacing (≤0.5mm), high free radical density, small rare earth alloy work function, light weight and no resistance.

[0041] It should be noted that the generator power supply of the equipment is a high-voltage pulse plasma power supply group with a pulse frequency of 80kHz, a pulse width of 0 to 10μs, and an SPK safety response speed of milliseconds; after special tuning and adaptation, it saves 50% more electricity than the industrial frequency high-voltage power supply and 20% more electricity than the ordinary high-frequency power supply; the power supply design focuses on breaking through the corona closure, which can effectively prevent the local reverse discharge phenomenon caused by the accumulation of high-resistance dust in the dust collecting net; the power supply is used in combination with the ultra-high density generation stage to achieve stable operation of the positive and negative field distance below 50mm; the equipment is controlled by the generator power supply for block operation, and any fault in a single block system cannot interfere with the normal operation of other blocks, and there will be no situation where a small fault causes a complete loss of dust removal capacity, shuts down equipment, or even affects production.

[0042] Example 2

[0043] As a further optimized solution of Example 1, please refer to Figure 6 A mounting ring 7 is provided in the air intake pipe 2, and the axis of the mounting ring 7 is the same as the axis of the air intake pipe 2; a baffle 8 is hinged on the side of the mounting ring 7 facing the shell 1, and the baffle 8 separates the air intake pipe 2, and an elastic member (such as a spring) is installed between the mounting ring 7 and the baffle 8; an air inlet 9 is opened on the air intake pipe 2, and the air inlet 9 is located on the inner side of the baffle 8 (the inner side refers to the side of the baffle 8 close to the shell 1), and an air supply device (such as an air pump) is connected to the air inlet 9, and a touch switch 12 is provided on the mounting ring 7, and the touch switch 12 is in contact with the baffle 8, and the touch switch 12 is connected to the power supply of the air supply device through a wire.

[0044] Working principle: when the exhaust gas enters the interior of the intake pipe 2, the exhaust gas exerts pressure on the baffle 8, causing it to rotate toward the shell 1, thereby penetrating the area blocked by the intake pipe 2 and allowing the exhaust gas to enter the shell 1 through the intake pipe 2; when the exhaust gas stops entering, the gas thrust on the baffle 8 disappears, and under the action of the elastic member, the baffle 8 rotates in the opposite direction and resets to cut off the intake pipe 2 again, so that the exhaust gas inside the shell 1 will not flow back into the intake pipe 2; when the baffle 8 is reset, it will contact the mounting ring 7 and press the touch switch 12 to power on the air supply equipment, introduce air into the intake pipe 2, and exert pressure on the exhaust gas inside the shell 1, so that the exhaust gas flows and is discharged after being treated, ensuring that no untreated exhaust gas remains in the plasma processor and avoiding untreated exhaust gas remaining in the shell 1 due to the cessation of exhaust gas transportation.

[0045] In this embodiment, as a further optimized solution, please refer to Figure 7 , an airflow detection device 10 (gas flow sensor, model may be FS5001L) is provided in the exhaust pipe 3, and a controller (model may be CHR320A) is provided on the exhaust pipe 3; the airflow detection device 10 is used to detect whether there is gas flow inside the exhaust pipe 3, and transmit the information to the controller. When no gas flow is detected, the controller controls the gas supply device to cut off the power (at this time, the baffle 8 presses the touch switch 12, and the gas supply device cannot work; to ensure that the gas supply device will not be triggered by mistake, because when the plasma dust collector is not working, there is no exhaust gas passing through the inside of the intake pipe 2, and at this time the baffle 8 presses the touch switch 12, so the gas supply device is controlled by the controller to make it work accurately); when gas flow is detected, the controller controls the power supply to be turned on, and at this time, when the baffle 8 presses the touch switch 12 again, the gas supply device will work; and the controller will control the working time of the gas supply device, so that the gas supply device will stop working after working for a period of time (timing), to ensure that the gas supply device will stop working after the residual exhaust gas inside the shell 1 is processed.

[0046] In this embodiment, as a further optimized solution, please refer to Figure 6 There are two baffles 8, and the two baffles 8 are symmetrically hinged on the mounting ring 7;

[0047] Among them, see Figure 8 and Fig.10The baffle 8 includes a mounting plate 81 hinged on the mounting ring 7, an elastic member is connected to the mounting plate 81, and a movable plate 82 is hinged on the side where the two groups of mounting plates 81 are close to each other (the movable plate 82 rotates toward the shell 1 when pushed by the gas); a slot 811 is provided on the side of the mounting plate 81 facing the movable plate 82, and a limiting slot 821 is provided on the side of the movable plate 82 facing the mounting plate 81, a limiting block 813 is slidably provided in the slot 811, and a return spring 814 is installed between the limiting block 813 and the slot 811; an opening is provided on the side of the mounting plate 81 facing the mounting ring 7, a push block 812 is slidably inserted in the opening, and an elastic element (such as a spring) is installed between the push block 812 and the opening, one end of the push block 812 is in contact with a side wall of the mounting ring 7 close to the shell 1, and the other end of the push block 812 extends to the inside of the slot 811 and is in contact with the side wall of the limiting block 813, and the contact area between the push block 812 and the limiting block 813 is an arc surface.

[0048] It should be noted that when the exhaust gas pushes the baffle plate 8 to rotate and move closer to the shell 1 (the mounting plate 81 and the movable plate 82 will rotate), the push block 812 is not in contact with the mounting ring 7. Under the action of the elastic element, the push block 812 moves closer to the mounting ring 7, so that the push block 812 is not in contact with the limit block 813, and the thrust exerted by the push block 812 on the limit block 813 disappears; under the action of the return spring 814, the limit block 813 moves into the slot 811 and moves out of the limit slot 821, so that the restriction on the movable plate 82 disappears, so that the movable plate 82 can be moved The mounting plate 81 rotates, and because there is no spring or other reset component installed between the mounting plate 81 and the movable plate 82, the movable plate 82 is more convenient to rotate, so that the cut-off intake pipe 2 can be quickly penetrated and restored to the maximum flow rate, thereby improving the efficiency of exhaust gas treatment; when the exhaust gas stops entering the intake pipe 2, the baffle 8 is reset under the action of the elastic component, and the push block 812 contacts the mounting ring 7, so that the arc surface of the push block 812 contacts the limit block 813, and the limit block 813 is pushed into the limit groove 821, thereby fixing the movable plate 82 so that it cannot rotate on the mounting plate 81.

[0049] In this embodiment, as a further optimized solution, please refer to Figure 8 and Fig. 9 A limit piece 83 is provided on the side of the mounting plate 81 facing the shell 1, and the limit piece 83 is used to block the movable plate 82 to limit the rotation angle of the movable plate 82 so that the rotation range on the mounting plate 81 will not be too large; a magnetic block 11 is provided on the mounting ring 7, and the movable plate 82 can be magnetically adsorbed (the movable plate 82 is made of metal that can be magnetically adsorbed, such as iron), and the movable plate 82 is adsorbed and fixed to ensure that the baffle 8 can isolate the intake pipe 2.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plasma dust collector, comprising a housing (1), an air inlet pipe (2) and an exhaust pipe (3) being respectively arranged on both sides of the housing (1), and an ash hopper (4) being arranged at the bottom of the housing (1), characterized in that: The housing (1) is provided with a plurality of groups of ionization generating parts (5) and dust collecting parts (6) which are arranged in sequence in a horizontal direction and correspond to each other one by one; The arrangement direction of the plurality of groups of ionization generating parts (5) and the plurality of groups of dust collecting parts (6) is perpendicular to the flow direction of the exhaust gas; The ionization generating part (5) comprises two mounting parts (51) respectively arranged on both sides of the dust collecting part (6), and a plurality of groups of ionization wires (52) are arranged in sequence from top to bottom between the two groups of mounting parts (51); the exhaust gas enters the housing (1) through the air intake pipe (2), and the ionization wires (52) of the ionization generating part (5) are energized to work, so that particulate matter in the exhaust gas is captured by the dust collecting part (6), and the exhaust gas is discharged from the exhaust pipe (3); The intake pipe (2) is provided with a mounting ring (7) coaxial with the intake pipe (2); a baffle (8) for isolating the intake pipe (2) and an elastic member connected to the baffle (8) are hingedly connected on the side of the mounting ring (7) facing the housing (1); an intake port (9) located inside the baffle (8) is provided on the intake pipe (2); an air supply device is connected to the intake port (9); a touch switch (12) for fitting with the baffle (8) and for controlling the operation of the air supply device is provided on the mounting ring (7); when the exhaust gas enters the interior of the intake pipe (2), the exhaust gas applies pressure to the baffle (8), causing it to move toward the housing (1). 1) to penetrate the area blocked by the intake pipe (2), so that the exhaust gas enters the shell (1) through the intake pipe (2); when the exhaust gas stops entering, the thrust of the gas disappears on the baffle (8), and under the action of the elastic member, the baffle (8) rotates in the opposite direction to reset, so as to cut off the intake pipe (2) again, so that the exhaust gas inside the shell (1) will not flow back into the intake pipe (2); when the baffle (8) is reset, it will contact the mounting ring (7) and press the touch switch (12), so that the air supply device is powered on and works, air is introduced into the intake pipe (2), and the exhaust gas inside the shell (1) is pressurized, so that the exhaust gas flows and is discharged after being treated; An airflow detection device (10) for detecting the airflow inside the exhaust pipe (3) is provided in the exhaust pipe (3), and a controller for receiving information from the airflow detection device (10) and controlling the operation of the air supply device according to the information is provided on the exhaust pipe (3); There are two baffles (8), and the two baffles (8) are symmetrically hinged on the mounting ring (7); The baffle (8) comprises a mounting plate (81) hinged on the mounting ring (7), and two sets of mounting plates (81) are hingedly connected to each other on one side thereof. A slot (811) is provided on a side of the mounting plate (81) facing the movable plate (82), a limiting slot (821) is provided on a side of the movable plate (82) facing the mounting plate (81), a limiting block (813) for being inserted into the limiting slot (821) and a return spring (814) for pulling the limiting block (813) to move into the slot (811) are slidably provided in the slot (811), an opening is provided on a side of the mounting plate (81) facing the mounting ring (7), a push block (812) for being fitted with the mounting ring (7) and for limiting the limiting block (813) and an elastic element connected to the push block (812) are slidably inserted in the opening, and a contact area between the push block (812) and the limiting block (813) is an arc surface; The mounting plate (81) is provided with a limiting member (83) for limiting the rotation angle of the movable plate (82); The mounting ring (7) is provided with a magnetic block (11) for adsorbing the movable plate (82).

2. A plasma dust collector according to claim 1, characterized in that: The dust collecting part (6) comprises two mounting frames (61) respectively mounted on the upper and lower sides of the inner cavity of the shell (1); a rotating shaft (62) is provided on each of the two mounting frames (61); a dust collecting net (63) is provided between the two sets of rotating shafts (62); and a driving mechanism (64) is provided on the mounting frame (61) to drive the rotating shaft (62) to rotate, thereby driving the dust collecting net (63) for transmission; Wherein, two dust brushes (611) are provided on the lower mounting frame (61) and are located inside and outside the dust collecting net (63) respectively.

3. A plasma dust collector according to claim 1, characterized in that: The ionization wire (52) is formed by spirally weaving a plurality of groups of rare earth alloy wires with different wire diameters.

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