Electric dust remover and using method

Abstract

The invention provides an electric dust remover and a using method, and relates to the technical field of electric dust removal. The electric dust remover comprises a box body, a gas header arranged in the box body, a plurality of dust removal units arranged at the top of the gas header, a base rotationally arranged on the gas header, a gas pipe arranged on the base and communicated with the gas header, an anode arranged on the base on the inner side of the gas pipe, a beating mechanism arranged on the inner wall of the gas pipe, and a suspension arranged above the dust removal units. The multiple cathodes are connected to the lower portion of the suspension and inserted into the inner sides of the multiple anodes respectively, each cathode comprises a plurality of sawtooth discharge wires, the hammering mechanism comprises a plurality of hammering units in the circumferential direction of the inner wall of the air pipe, each hammering unit comprises a plurality of air holes formed in the inner wall of the air pipe in the axial direction, air bags are arranged in the air holes, and air channels are formed in the inner wall of the air pipe on the inner sides of the air holes; the cleaning mechanism comprises a hanging bracket, a plurality of cleaning cylinders matched with the dust removal units in position are hung at the bottom of the hanging bracket, and a plurality of bristles are distributed on the outer walls of the cleaning cylinders. The density and ionization probability of discharge points are improved, and the dust removal efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic precipitators, and in particular to an electrostatic precipitator and a use method thereof. Background Art

[0002] An electrostatic precipitator is a device that uses electrostatic force to remove suspended particles in the air such as flue gas and industrial dust. Its basic structure usually consists of a discharge electrode (cathode) and a collector electrode (anode). High voltage direct current is passed through the discharge electrode, forming a strong electric field around the discharge electrode, which charges the particles in the air. The dust particles acquire negative charges through the ionization process. Due to the principle of opposite charges attracting each other, the dust particles are adsorbed on the surface of the collector electrode. Mechanical vibration or water washing is used regularly to remove the attached dust.

[0003] In the prior art, the cathode is a rectangular sheet with discharge serrations on the two long sides. In a closed tubular anode electric field, the serrated cathode is twisted into a twist shape for installation. This installation method has only two discharge points on the cross section of the anode tube, resulting in low ionization degree and low dust removal efficiency. Summary of the invention

[0004] The purpose of the present invention is to develop an electrostatic precipitator and a method for using the electrostatic precipitator which can improve the density and ionization probability of discharge points and the dust removal efficiency.

[0005] The present invention is achieved through the following technical solutions:

[0006] An electrostatic precipitator, comprising:

[0007] Box;

[0008] The gas header is arranged in the box;

[0009] Ash hopper, located at the bottom of the gas header;

[0010] The air inlet pipe and the exhaust pipe are connected to the air header and the box body respectively;

[0011] Multiple dust removal units are installed on the top of the gas header, including:

[0012] A base is rotatably mounted on the gas header;

[0013] An air pipe, arranged on the base and connected to the air manifold;

[0014] Anode, located on the base inside the trachea;

[0015] The beating mechanism is arranged on the inner wall of the trachea;

[0016] A suspension, disposed above the plurality of dust removal units;

[0017] A plurality of cathodes are connected to the bottom of the suspension and are respectively inserted into the inner sides of the plurality of anodes;

[0018] Among them, the cathode includes a plurality of sawtooth discharge wires, and the plurality of sawtooth discharge wires are arranged in a circular trajectory coaxial with the rotating shaft of the base. The discharge sawteeth of the sawtooth discharge wires point to the anode;

[0019] The hammering mechanism includes a plurality of hammering units in the circumferential direction of the inner wall of the air pipe. The hammering unit includes a plurality of air holes arranged axially on the inner wall of the air pipe. An airbag is provided in the air hole, and an air passage is provided in the inner wall of the air pipe on the inner side of the air hole. The air passage is communicated with the air source control system;

[0020] The electrostatic precipitator further includes a cleaning mechanism. The cleaning mechanism includes a suspension bracket. A plurality of cleaning cylinders adapted to the dust removal units are suspended at the bottom of the suspension bracket. The outer wall of the cleaning cylinder is covered with a number of bristles.

[0021] Optionally, the plurality of sawtooth discharge wires are equidistantly arranged on their circular arrangement trajectories. Circular substrates are respectively provided at the top and bottom of the cathode. The substrates are connected to the top and bottom ends of the plurality of sawtooth discharge wires. The suspension is connected to the substrate at the top of the cathode through a suspension rod.

[0022] Optionally, the air pipe is in a cylindrical shape. The air pipe is located near the edge of the base. The air pipe is in an eccentric state on the base. A bent pipe is provided at the bottom of the base. One end of the bent pipe is communicated with the inner side of the air pipe. The other end of the bent pipe is rotatably connected to the top of the air box and rotationally sealed. The rotation axis of the rotationally connected end of the bent pipe and the air box is coaxial with the rotation axis of the base.

[0023] Optionally, the cross section of the anode is in the shape of a major arc, and it has a notch in the circumferential direction. The notch is near the cathode on the anode. A partition is provided in the notch. The cross section of the partition is in the shape of a minor arc adapted to the shape of the anode. The partition and the anode are spliced into a cylindrical shape coaxial with the air pipe.

[0024] Optionally, the base is in a cylindrical shape. An annular groove is provided on the side wall of the base. A support seat fixed to the box body is provided on the side of the annular groove. An air cavity is provided on the side wall of the support seat close to the annular groove. The support seat at the edge of the air cavity is slidably sealed with the annular groove. A pressure pipe communicated with the air cavity is provided on the support seat. The pressure pipe is communicated with the air source control system. The bottom end of the air passage extends into the annular groove. The distance between the ends of two adjacent air passages on the annular groove is not less than the coverage range of the air cavity on the annular groove.

[0025] Optionally, a perforated plate is provided in the air holes inside the airbag. Through holes are provided in the perforated plate, and an air intake assembly is provided in the through holes. The air flow in the air duct enters the airbag through the air intake assembly. An exhaust assembly is provided on the perforated plate on the side of the through hole. The gas in the airbag is discharged into the air duct through the exhaust assembly. The exhaust assembly includes exhaust holes provided on the perforated plate, and a check valve is connected to the end of the exhaust hole close to the air duct side.

[0026] Optionally, the air intake assembly includes a hard plate and a soft plate provided on the inner wall of the through hole. The soft plate is on the side of the hard plate close to the airbag. The soft plate and the hard plate block the through hole and there is an overlapping area between the two. The soft plate and the hard plate are in close contact within the overlapping area.

[0027] Optionally, a sealing layer is provided on the surface of the hard plate. The soft plate is made of rubber material. A support plate connected to the inner wall of the through hole is further provided on the side of the soft plate close to the airbag. A plurality of springs connected to the soft plate are provided on the support plate. The springs tightly press on the soft plate in the overlapping area with the hard plate.

[0028] Optionally, the top of the cleaning cylinder is suspended by a pull rope with the hanger. The cleaning cylinder is cylindrical. The cleaning cylinder has a cavity inside. A plurality of through holes are evenly arranged in a matrix on the outer wall of the cleaning cylinder. The through holes are inclined. The lower end of the through hole faces the outside of the cleaning cylinder. A cleaning pipe communicating with the cavity inside the cleaning cylinder is provided on the hanger. The cleaning pipe can convey cleaning liquid or gas into the cavity inside the cleaning cylinder.

[0029] A method for using an electrostatic precipitator includes:

[0030] The intake pipe conveys dust-containing gas to the air manifold, and the dust-containing gas enters a plurality of dust removal units from the air manifold;

[0031] The gas that has completed dust removal and is output from the top of the dust removal unit is output through the exhaust pipe;

[0032] Periodically perform ash cleaning operations and cleaning operations;

[0033] Wherein, when the dust-containing gas is conveyed from bottom to top in the dust removal unit, the base rotates to drive the air pipe and the anode to perform eccentric motion around the cathode;

[0034] During the ash cleaning operation, the dust-containing gas is suspended from entering the air manifold. The base keeps rotating, and the air pipe and the anode keep performing eccentric motion around the cathode. The gas source control system conveys pressurized gas into the air duct. The air flow in the air duct rushes into the airbag to instantaneously expand the airbag and pound the inner anode. The dust attached to the anode is shaken off. After the ash cleaning operation lasts for a period of time, the electrostatic precipitator resumes operation, and the gas source control system stops conveying pressurized gas;

[0035] During the cleaning operation, raise the suspension to withdraw the cathode from the dust removal unit, then place the cleaning mechanism. The multiple cleaning cylinders of the cleaning mechanism are respectively inserted into the anodes of multiple dust removal units, making the cleaning cylinders coaxial with the rotating shaft of the base. At the same time, perform the dust cleaning operation. The base rotates to make the air pipe and the anode move eccentrically around the cleaning cylinder. During the movement of the anode, it collides with the cleaning cylinder and the bristles on the cleaning cylinder to clean the anode. During the movement of the anode, it is also hammered by the continuously expanding and contracting airbag. The dust attached to the anode is cleaned. After the cleaning operation is completed, the hanging bracket drives the multiple cleaning cylinders to withdraw from the dust removal unit, and then move the suspension and insert the multiple cathodes into the multiple dust removal units respectively to resume the operation of the electrostatic precipitator.

[0036] The beneficial effects of the present invention are as follows:

[0037] Multiple cathode discharge wires are arranged in a circular shape, which improves the density of discharge points and the ionization probability, increases the discharge uniformity. During the transportation of the dust-containing gas in the dust removal unit, the air pipe and the anode move eccentrically around the cathode, making the air flow have fluidity in the radial direction. Especially the part of the air pipe and the anode close to the cathode pushes the air flow close to the cathode during rotation, improving the contact rate between the air flow and the cathode, enhancing the contact efficiency between the dust-containing gas and the cathode, enabling the dust-containing gas to quickly carry negative charges, and also improving the contact efficiency between the anode and the dust-containing gas during the movement of the anode, so that the dust can be more quickly affected by the electric field force and move towards the anode, improving the dust removal efficiency. There is a notch at the position on the anode closest to the cathode, and a partition is arranged in the notch to prevent the distance between the anode and the cathode from being too close and affecting the dust removal efficiency.

[0038] When performing dust cleaning, the airbag on the inner wall of the air pipe is inflated and hammered against the anode through air pressure to shake off the dust on the anode. The airbag has a certain elasticity and will not damage the anode when hammering it. Compared with the traditional anode hammering method, multiple airbags in the same hammering unit cover the inner wall of the air pipe in the vertical direction, enabling the entire anode to be hammered, so that the dust attached to the anode can be shaken off. When performing cleaning, lift out the cathode and place the cleaning mechanism into multiple dust removal units to achieve a more thorough cleaning of the anodes in multiple dust removal units. During the cleaning process, not only will the airbag hammer the anode to make it vibrate, which is conducive to the fall of dust, but also the gas or liquid sprayed obliquely downward from the cleaning cylinder will wash the anode, and the bristles on the cleaning cylinder will clean the dust on the anode, enabling the anode to complete an efficient and relatively thorough cleaning operation. Multiple dust removal units perform the cleaning operation synchronously, with high operation efficiency, and the electrostatic precipitator can resume operation as soon as possible. Description of the Drawings

[0039] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0040] Figure 1 Structural diagram of the present invention;

[0041] Figure 2 Top view of the dust removal unit;

[0042] Figure 3 Structural diagram of the side wall of the air pipe;

[0043] Figure 4 For Figure 3 Enlarged view of part A in

[0044] Figure 5 Structural diagram of the cleaning mechanism.

[0045] Reference numerals: 1, box body; 2, air connection box; 3, intake pipe; 4, exhaust pipe; 5, ash hopper; 6, solid pipe; 7, elbow pipe; 8, base; 9, annular groove; 10, support; 11, air pipe; 12, anode; 13, cathode; 14, substrate; 15, suspension; 16, partition; 17, air duct; 18, airbag; 19, orifice plate; 20, hard plate; 21, soft plate; 22, spring; 23, support plate; 24, exhaust hole; 25, check valve; 26, hanger; 27, pull rope; 28, cleaning cylinder; 29, brush bristles; 30, cleaning pipe. Detailed implementation manners

[0046] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the accompanying drawings and the description are considered to be exemplary in nature rather than restrictive.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0048] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] As Figures 1 - 4 shown, the present invention discloses an electrostatic precipitator, which includes a box body 1. A gas connection box 2 is provided at the bottom of the box body 1. A plurality of ash hoppers 5 are provided at the bottom of the gas connection box 2. An intake pipe 3 is connected to the gas connection box 2, and an exhaust pipe 4 is connected to the top of the box body 1.

[0050] A plurality of dust removal units are evenly arranged in a matrix at the top of the gas connection box 2. The dust-containing gas enters the gas connection box 2 through the intake pipe 3, and then enters the plurality of dust removal units for dust removal, and is output through the exhaust pipe 4. The dust in the dust removal unit can fall into the ash hopper 5 for discharge.

[0051] The dust removal unit includes a base 8 provided above the gas connection box 2. The base 8 is cylindrical. A cylindrical trachea 11 is vertically provided at the top of the base 8. The trachea 11 is located near the edge of the base 8 and is in an eccentric state on the base 8.

[0052] A bent pipe 7 is provided at the bottom of the base 8. The bent pipe 7 includes a vertical portion and a non-vertical portion. The vertical portion is coaxial with the base 8. The non-vertical portion is located at the top of the vertical portion and is connected to the base 8 and communicates with the inside of the trachea 11.

[0053] The bottom end of the vertical portion of the bent pipe 7 is coaxially and rotatably connected to a fixed pipe 6. The fixed pipe 6 is rotationally sealed with the vertical portion of the bent pipe 7. The bottom end of the fixed pipe 6 communicates with the top of the gas connection box 2.

[0054] An anode 12 coaxial with the inside of the trachea 11 is provided inside the trachea 11. The anode 12 is connected to the base 8. A cover ring is connected between the top edge of the anode 12 and the trachea 11, and the cover ring makes the connection between the top of the air cylinder and the top of the anode 12 stable.

[0055] A cathode 13 is provided inside the anode 12. The cathode 13 is vertically arranged and is coaxial with the base 8. The cathode 13 includes a plurality of sawtooth discharge wires. The plurality of sawtooth discharge wires are arranged in a circular trajectory coaxial with the base 8, and the plurality of sawtooth discharge wires are equidistantly arranged on their circular arrangement trajectory. The discharge sawteeth of the sawtooth discharge wires point to the anode 12.

[0056] Circular substrates 14 are respectively provided at the top and bottom of the cathode 13. The substrates 14 are connected to the top and bottom ends of the plurality of sawtooth discharge wires. A suspension 15 is provided above the plurality of dust removal units. The suspension 15 is connected to the substrate 14 at the top of the cathode 13 through a suspension rod. The suspension 15 is movably connected to the box body 1 and is detachable.

[0057] The cross section of the anode 12 is in the shape of a major arc, and has a notch in the circumferential direction. The notch is located on the anode 12 closest to the cathode 13. A partition 16 is provided in the notch. The cross section of the partition 16 is in the shape of a minor arc that matches the shape of the anode 12. The partition 16 and the anode 12 are spliced ​​into a cylindrical shape that is coaxial with the air pipe 11.

[0058] An outer ring gear is coaxially arranged on the outer wall of the base 8, and the outer ring gears on the bases 8 of adjacent dust removal units are meshed. A motor (not shown in the figure) connected to the outer ring gear is also arranged in the housing 1, and the motor drives the outer ring gear to rotate, thereby driving the base 8 to rotate. In addition, the base 8 of each dust removal unit can also be driven to rotate by an independent motor.

[0059] A beating mechanism is provided on the inner wall of the trachea 11, and the beating mechanism can beat the anode 12. The beating mechanism includes a plurality of beating units on the circumferential direction of the inner wall of the trachea 11, and the plurality of beating units are arranged at equal intervals on the circumferential direction of the inner wall of the trachea 11. The beating unit includes a plurality of pores arranged at equal intervals in a vertical line on the inner wall of the trachea 11, and an airway 17 connected with the plurality of pores is provided in the inner wall of the trachea 11. An airbag 18 is provided in the pore, and the edge of the airbag 18 is sealed and connected with the inner wall of the pore, and an orifice plate 19 is provided in the pore inside the airbag 18, and a through hole is provided on the orifice plate 19, and an air intake assembly is provided in the through hole, and the airflow in the airway 17 enters the airbag 18 through the air intake assembly. An exhaust assembly is provided on the orifice plate 19 on the side of the through hole, and the gas in the airbag 18 is discharged into the airway 17 through the exhaust assembly.

[0060] The air intake assembly includes a hard plate 20 and a soft plate 21 arranged on the inner wall of the through hole. The soft plate 21 is located on the side of the hard plate 20 close to the airbag 18. The soft plate 21 and the hard plate 20 block the through hole and there is an overlapping area between the two. The soft plate 21 is in close contact with the hard plate 20 in the overlapping area. The hard plate 20 is made of a hard material, and a sealing layer is provided on its surface. The sealing layer can be made of rubber. The soft plate 21 is made of rubber. The side of the soft plate 21 close to the airbag 18 is also provided with a support plate 23 connected to the inner wall of the through hole. The support plate 23 is provided with a plurality of springs 22 connected to the soft plate 21. The springs 22 are pressed tightly on the soft plate 21 in the overlapping area with the hard plate 20. The elastic force of the springs 22 makes the soft plate 21 in the overlapping area closely contact with the hard plate 20.

[0061] The exhaust assembly includes an exhaust hole 24 disposed on the orifice plate 19 , and a one-way valve 25 is connected to the end of the exhaust hole 24 close to the air passage 17 .

[0062] The side wall of the base 8 is provided with an annular groove 9. A support 10 fixed to the box body 1 is provided on the side of the annular groove 9. The support 10 is slidably connected to the annular groove 9. An air chamber is provided on the side wall of the support 10 close to the annular groove 9. The support 10 at the edge of the air chamber is slidably sealed with the annular groove 9. A pressure pipe communicating with the air chamber is provided on the support 10. The pressure pipe is communicated with the gas source control system, and the gas source control system conveys gas with a certain pressure to the pressure pipe. The bottom ends of the air ducts 17 of multiple dust removal units extend through the inside of the base 8 to the annular groove 9, and the ends of the multiple air ducts 17 are arranged at equal intervals in the annular groove 9, and the distance between the ends of two adjacent air ducts 17 on the annular groove 9 is not less than the coverage range of the air chamber on the annular groove 9, so that only the end of one air duct 17 can slide through the air chamber. When the base 8 rotates, the annular groove 9 and the support 10 slide relative to each other. The ends of the multiple air ducts 17 in the annular groove 9 circulate through the air chamber in the support 10. The air duct 17 communicates with the air chamber in the air chamber. The pressure pipe conveys gas with a certain pressure to the air chamber. When the pressure gas enters the air duct 17 in the air chamber and the air pressure in the air duct 17 rises to a certain level, when the seal between the flexible plate 21 and the rigid plate 20 is not sufficient to block the through hole, the air flow in the air duct 17 will rush through the gap between the flexible plate 21 and the rigid plate 20 and into the airbag 18, causing the airbag 18 to expand instantaneously. During this process, the spring 22 is compressed, and the flexible plate 21 elastically deforms towards the support plate 23. After the air pressure in the airbag 18 and the air duct 17 is balanced, under the action of the elastic force of the spring 22 and the elastic force of the flexible plate 21 itself, the flexible plate 21 rebounds and comes into close contact with the rigid plate 20 again to block the through hole. As the base 8 rotates, when the end of the air duct 17 slides through the air chamber and disengages from the support 10, the air flow in the air duct 17 rushes out from the end of the air duct 17 and scatters into the environment. The pressure in the air duct 17 drops, and there is a pressure difference between the inside of the air duct 17 and the airbag 18. The gas in the airbag 18 is discharged into the air duct 17 by the exhaust assembly and discharged. During this process, the airbag 18 also pushes the gas out due to its own contraction due to the elastic force. As the base 8 rotates, the above process is continuously repeated to realize the intermittent expansion and contraction of the airbag 18. When the airbag 18 expands, it hammers the anode 12 inside it, causing the dust on the anode 12 to fall off.

[0063] As Figure 5 shown, the electrostatic precipitator further includes a cleaning mechanism. The cleaning mechanism includes a suspension bracket 26. Multiple cleaning units corresponding to the dust removal units are provided at the bottom of the suspension bracket 26. The suspension bracket 26 can be moved to respectively insert the multiple cleaning units into the anodes 12 of the multiple dust removal units.

[0064] The cleaning unit includes a cleaning cylinder 28 suspended at the bottom of the hanger 26. The top of the cleaning cylinder 28 is suspended from the hanger 26 by a pull rope 27. The cleaning cylinder 28 is cylindrical and has a cavity inside. The outer wall of the cleaning cylinder 28 is covered with a number of bristles 29. A plurality of through holes are also provided on the outer wall of the cleaning cylinder 28 and are uniformly arranged in a matrix. The through holes are inclined, and the lower end of the through hole faces the outside of the cleaning cylinder 28. A cleaning pipe 30 communicating with the cavity inside the cleaning cylinder 28 is provided on the hanger 26, and the cleaning pipe 30 can convey cleaning liquid or gas with a certain pressure into the cavity inside the cleaning cylinder 28.

[0065] The present invention also discloses a method for using an electrostatic precipitator, including:

[0066] The intake pipe 3 conveys the dust-containing gas to the air connection box 2, and the dust-containing gas enters a plurality of dust removal units from the air connection box 2;

[0067] The gas that has completed dust removal and is output from the top of the dust removal unit is output by the exhaust pipe 4;

[0068] Periodically perform ash cleaning operations and cleaning operations;

[0069] Among them, when the dust-containing gas is conveyed from bottom to top in the dust removal unit, the base 8 rotates to drive the gas pipe 11 and the anode 12 to make an eccentric movement around the cathode 13. During the movement, the partition 16 in the notch of the anode 12 is always in the state closest to the cathode 13;

[0070] During the ash cleaning operation, the intake of the dust-containing gas into the air connection box 2 is suspended, the base 8 continues to rotate, the gas pipe 11 and the anode 12 continue to make an eccentric movement around the cathode 13. The pressurizing pipe conveys gas with a certain pressure into the air cavity of the support 10. When the end of the air passage 17 on the annular groove 9 enters the support 10 and communicates with the air cavity as the base 8 rotates, the gas rushes into the air passage 17 and when the air pressure reaches a level sufficient to pass through the intake assembly, the air flow in the air passage 17 rushes into the airbag 18 to instantaneously expand the airbag 18 and hammer the inner anode 12. The dust attached to the anode 12 is shaken off and falls downward into the ash hopper 5. After the ash cleaning operation lasts for a period of time, the electrostatic precipitator resumes operation, and the pressurizing pipe stops conveying the pressurized gas;

[0071] During the cleaning operation, the suspension 15 is raised to withdraw the cathode 13 from the dust removal unit, and then the cleaning mechanism is placed in. The multiple cleaning units of the cleaning mechanism are respectively inserted into the anodes 12 of the multiple dust removal units, and the cleaning cylinder 28 of the cleaning unit is coaxially aligned with the base 8. Then, the cleaning pipe 30 conveys a liquid or gas with a certain pressure into the cavity of the cleaning cylinder 28. The liquid or gas flushes out obliquely downward through the through holes on the surface of the cleaning cylinder 28 and scours the anode 12. At the same time, the dust cleaning operation is carried out. The base 8 rotates to make the air pipe 11 and the anode 12 move eccentrically around the cleaning cylinder 28. During the movement of the anode 12, it collides with the cleaning cylinder 28 and the bristles 29 on the cleaning cylinder 28 to clean the anode 12. Moreover, the cleaning cylinder 28 is connected to the hanging bracket 26 through the pull rope 27. After the cleaning cylinder 28 is collided by the anode 12, it shakes, improving the contact rate between the cleaning cylinder 28 and the anode 12. During the movement of the anode 12, it is also pounded by the continuously expanding and contracting airbag 18, so that the dust attached to the anode 12 is cleaned. After the cleaning operation is completed, the hanging bracket 26 drives the multiple cleaning units to withdraw from the dust removal unit, and then the suspension 15 is moved and the multiple cathodes 13 are respectively inserted into the multiple dust removal units to resume the operation of the electrostatic precipitator.

[0072] The above embodiments are only the preferred embodiments of the present invention and do not limit the technical solutions of the present invention. Any technical solution that can be achieved on the basis of the above embodiments without creative work shall be regarded as falling within the scope of the patent rights of the present invention.

Claims

1. An electrostatic precipitator, characterized in that: include: Box; The gas header is arranged in the box; Ash hopper, located at the bottom of the gas header; The air inlet pipe and the exhaust pipe are connected to the air header and the box body respectively; Multiple dust removal units are installed on the top of the gas header, including: A base is rotatably mounted on the gas header; An air pipe, arranged on the base and connected to the air manifold; Anode, located on the base inside the trachea; The beating mechanism is arranged on the inner wall of the trachea; A suspension, disposed above the plurality of dust removal units; A plurality of cathodes are connected to the bottom of the suspension and are respectively inserted into the inner sides of the plurality of anodes; Wherein, the cathode comprises a plurality of sawtooth discharge wires, the plurality of sawtooth discharge wires are arranged in a circular track coaxial with the rotation axis of the base, and the discharge sawteeth of the sawtooth discharge wires point to the anode; The beating mechanism includes a plurality of beating units in the circumferential direction of the tracheal inner wall, the beating units include a plurality of air holes arranged in the axial direction of the tracheal inner wall, air bags are arranged in the air holes, and airways are arranged in the tracheal inner wall inside the air holes, and the airways are connected to the air source control system; The electric dust collector also includes a cleaning mechanism, which includes a hanger, and a plurality of cleaning cylinders adapted to the dust removal unit are hung at the bottom of the hanger, and the outer wall of the cleaning cylinder is covered with a plurality of bristles.

2. The electrostatic precipitator according to claim 1, characterized in that: The plurality of sawtooth discharge wires are arranged at equal intervals on their circular arrangement trajectory, and circular substrates are respectively provided on the top and bottom of the cathode, the substrates are connected to the top and bottom ends of the plurality of sawtooth discharge wires, and the suspension is connected to the substrate on the top of the cathode through a suspension rod.

3. The electrostatic precipitator according to claim 1, characterized in that: The air pipe is cylindrical and is located near the edge of the base. The air pipe is in an eccentric state on the base. A bent pipe is provided at the bottom of the base. One end of the bent pipe is connected to the inner side of the air pipe, and the other end of the bent pipe is rotatably connected to the top of the air union box and rotatably sealed. The rotating axis of the rotating connection end of the bent pipe and the air union box is coaxial with the rotating axis of the base.

4. The electrostatic precipitator according to claim 3, characterized in that: The cross section of the anode is in a major arc shape, and has a notch in the circumferential direction. The notch is located on the anode close to the cathode. A partition is provided in the notch. The cross section of the partition is in a minor arc shape that matches the shape of the anode. The partition and the anode are spliced ​​into a cylindrical shape that is coaxial with the air pipe.

5. The electrostatic precipitator according to claim 1, characterized in that: The base is cylindrical, and an annular groove is provided on the side wall of the base. A support fixed to the box body is provided on the side of the annular groove. An air cavity is provided on the side wall of the support close to the annular groove. The support at the edge of the air cavity is slidably sealed with the annular groove. A pressurizing pipe connected to the air cavity is provided on the support, and the pressurizing pipe is connected to the air source control system. The bottom end of the airway extends into the annular groove, and the distance between the ends of two adjacent airways on the annular groove is not less than the coverage range of the air cavity on the annular groove.

6. The electrostatic precipitator according to claim 1, characterized in that: A perforated plate is provided in the air hole on the inner side of the airbag, a through hole is provided on the perforated plate, an air intake assembly is provided in the through hole, the airflow in the airway enters the airbag through the air intake assembly, an exhaust assembly is provided on the perforated plate on the side of the through hole, the gas in the airbag is discharged into the airway through the exhaust assembly, the exhaust assembly includes an exhaust hole provided on the perforated plate, and a one-way valve is connected to the end of the exhaust hole close to the airway.

7. The electrostatic precipitator according to claim 6, characterized in that: The air intake assembly includes a hard plate and a soft plate arranged on the inner wall of the through hole, the soft plate is located on the side of the hard plate close to the airbag, the soft plate and the hard plate block the through hole and there is an overlapping area between the two, and the soft plate is in close contact with the hard plate in the overlapping area.

8. The electrostatic precipitator according to claim 7, characterized in that: A sealing layer is provided on the surface of the hard plate, the soft plate is made of rubber, and a support plate connected to the inner wall of the through hole is provided on the side of the soft plate close to the airbag. A plurality of springs connected to the soft plate are provided on the support plate, and the springs are tightly pressed on the soft plate in the overlapping area with the hard plate.

9. The electrostatic precipitator according to claim 1, characterized in that: The top of the cleaning cylinder is suspended from the hanger by a pull rope. The cleaning cylinder is cylindrical and has a cavity inside. A plurality of through holes evenly arranged in a matrix are opened on the outer wall of the cleaning cylinder. The through holes are inclined. The lower ends of the through holes face the outside of the cleaning cylinder. A cleaning pipe connected to the cavity inside the cleaning cylinder is provided on the hanger. The cleaning pipe can transport cleaning liquid or gas into the cavity inside the cleaning cylinder.

10. A method for using the electrostatic precipitator according to any one of claims 1 to 9, characterized in that: include: The air inlet pipe conveys dust-laden gas to the gas header, and the dust-laden gas enters multiple dust removal units from the gas header; The gas that has completed dust removal and is output from the top of the dust removal unit is output through the exhaust pipe; Periodically carry out dust removal and cleaning operations; When the dust-laden gas is transported from bottom to top in the dust removal unit, the rotation of the base drives the gas pipe and the anode to move eccentrically around the cathode; During the dust cleaning operation, the dust-containing gas stops entering the gas manifold, the base keeps rotating, the gas pipe and the anode keep eccentrically moving around the cathode, and the gas source control system delivers pressurized gas into the airway. The airflow in the airway rushes into the airbag, causing the airbag to expand instantly and hit the anode inside, and the dust attached to the anode is shaken off. After the dust cleaning operation continues for a period of time, the electrostatic precipitator resumes work, and the gas source control system stops delivering pressurized gas; During the cleaning operation, the suspension is raised to pull the cathode out of the dust removal unit, and then the cleaning mechanism is placed in. The multiple cleaning cylinders of the cleaning mechanism are respectively inserted into the anodes of the multiple dust removal units, so that the cleaning cylinder and the rotating axis of the base are in a coaxial state. At the same time, the dust cleaning operation is carried out, and the base rotates to make the air pipe and the anode eccentrically move around the cleaning cylinder. During the movement of the anode, it collides with the cleaning cylinder and the bristles on the cleaning cylinder to clean the anode. During the movement of the anode, it is also beaten by the continuously circulating and expanding airbag, and the dust attached to the anode is cleaned. After the cleaning operation is completed, the hanger drives the multiple cleaning cylinders to pull out the dust removal unit, and then the suspension is moved and the multiple cathodes are respectively inserted into the multiple dust removal units to restore the operation of the electrostatic precipitator.

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