An electrostatic precipitator and method of use

Abstract

The application provides an electric dust collector and a use method, and relates to the technical field of electric dust removal. The electric dust collector comprises a box body, a gas joint box arranged in the box body, a plurality of dust removal units arranged on the top of the gas joint box, a base rotatably arranged on the gas joint box, a gas pipe arranged on the base and communicated with the gas joint box, 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, a suspension arranged above the plurality of dust removal units, a plurality of cathodes connected below the suspension and respectively inserted into the inner sides of the plurality of anodes, wherein the cathode comprises a plurality of sawtooth discharge wires, the beating mechanism comprises a plurality of beating units in the circumferential direction of the inner wall of the gas pipe, the beating unit comprises a plurality of air holes arranged in the axial direction of the inner wall of the gas pipe, an air bag is arranged in the air hole, an air duct is arranged in the inner wall of the gas pipe on the inner side of the air hole, and the cleaning mechanism comprises a hanger, a plurality of cleaning barrels matched with the dust removal units in position are hung at the bottom of the hanger, and the outer wall of the cleaning barrel is covered with a plurality of bristles. The application improves the density of discharge points and the ionization probability, and improves the dust removal efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric dust removal, in particular to an electric dust collector and a use method thereof. BACKGROUND

[0002] The electric dust collector is a device for removing suspended particles in flue gas, industrial dust and the like by using electrostatic force. The basic structure thereof is generally composed of a discharge electrode (cathode) and a collecting electrode (anode). The discharge electrode is connected to high-voltage direct current, and a strong electric field is formed around the discharge electrode to make the particles in the air carry electric charges. The dust particles obtain negative charges through the ionization process, and are attracted to the surface of the collecting electrode due to the principle of attracting opposite charges. The adhered dust is removed by mechanical beating or water washing at regular intervals.

[0003] In the prior art, the cathode is provided with discharge sawtooths on two long edges of a rectangular sheet. The sawtooth cathode is twisted into a spiral shape and installed in the closed tubular anode electric field. In this installation mode, there are only two discharge points in the cross section of the anode tube, resulting in low ionization degree and low dust removal efficiency. SUMMARY

[0004] The purpose of the present application is to develop an electric dust collector and a use method thereof for improving the density of discharge points and ionization probability and improving dust removal efficiency.

[0005] The present application is implemented by the following technical solutions:

[0006] An electric dust collector comprises:

[0007] a box body;

[0008] a gas connection box arranged in the box body;

[0009] a dust hopper arranged at the bottom of the gas connection box;

[0010] an air inlet pipe and an air outlet pipe respectively connected to the gas connection box and the box body;

[0011] a plurality of dust removal units arranged at the top of the gas connection box, comprising:

[0012] a base rotatably arranged on the gas connection box;

[0013] an air pipe arranged on the base and connected to the gas connection box;

[0014] an anode arranged on the base on the inner side of the air pipe;

[0015] a beating mechanism arranged on the inner wall of the air pipe;

[0016] a suspension arranged above the plurality of dust removal units;

[0017] a plurality of cathodes connected below the suspension and respectively inserted into the inner sides of the plurality of anodes;

[0018] The cathode comprises a plurality of zigzag discharge wires arranged in a circular track coaxial with the rotation axis of the base, and the discharge zigzag of the zigzag discharge wires points to the anode.

[0019] The beating mechanism comprises a plurality of beating units in the circumferential direction of the air pipe inner wall, and the beating unit comprises a plurality of air holes arranged in the axial direction of the air pipe inner wall, and the air pipe inner wall inside the air hole is provided with an air bag, and the air pipe inner wall inside the air hole is provided with an air duct, and the air duct is communicated with the gas source control system.

[0020] The electric dust collector further comprises a cleaning mechanism, the cleaning mechanism comprises a hanger, a plurality of cleaning barrels matched with the dust removal unit are hung at the bottom of the hanger, and the outer wall of the cleaning barrel is covered with a plurality of bristles.

[0021] Optionally, a plurality of zigzag discharge wires are arranged at equal intervals on the circular ring arrangement track, the top and bottom of the cathode are respectively provided with a circular base plate, the base plate is connected with the top end and bottom end of the plurality of zigzag discharge wires, and the suspension and the base plate at the top of the cathode are connected through a hanger.

[0022] Optionally, the air pipe is in the form of a cylinder, the air pipe is located near the edge of the base, the air pipe is in an eccentric state on the base, the bottom of the base is provided with an elbow pipe, one end of the elbow pipe is communicated with the inside of the air pipe, the other end of the elbow pipe is rotatably connected with the top of the gas header and is rotatably sealed, and the rotation axis of the rotatable connection end of the elbow pipe and the gas header is coaxial with the rotation axis of the base.

[0023] Optionally, the cross section of the anode is in the form of a superior arc, which has a notch in the circumferential direction, the notch is located near the cathode on the anode, the notch is provided with a partition plate, the cross section of the partition plate is in the form of an inferior arc matched with the shape of the anode, and the partition plate and the anode are spliced into a cylindrical shape coaxial with the air pipe.

[0024] Optionally, the base is in the form of a cylinder, the sidewall of the base is provided with a ring groove, the side of the ring groove is provided with a support fixed with the box body, the sidewall of the support near the ring groove is provided with an air cavity, the support at the edge of the air cavity is slidably sealed with the ring groove, the support is provided with a pressurizing pipe communicated with the air cavity, the pressurizing pipe is communicated with the gas source control system, the bottom end of the air duct extends into the ring groove, and the distance between the ends of two adjacent air ducts on the ring groove is not less than the coverage range of the air cavity on the ring groove.

[0025] Optionally, a hole plate is arranged in the air hole on the inner side of the air bag, a through hole is arranged on the hole plate, an air inlet assembly is arranged in the through hole, the airflow in the air duct enters the air bag through the air inlet assembly, an air outlet assembly is arranged on the hole plate on the side of the through hole, the gas in the air bag is discharged into the air duct through the air outlet assembly, the air outlet assembly comprises an air outlet hole arranged on the hole plate, and a one-way valve is connected to the end of the air outlet hole close to the side of the air duct.

[0026] Optionally, the air inlet assembly comprises a hard plate and a soft plate arranged on the inner wall of the through hole, the soft plate is arranged on the side of the hard plate close to the air bag, the soft plate and the hard plate block the through hole and overlap each other, and the soft plate is in close contact with the hard plate in the overlapping area.

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

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

[0029] A method for using an electric dust collector, comprising:

[0030] The gas inlet pipe conveys dust-containing gas to the gas connection box, and the dust-containing gas enters a plurality of dust removal units from the gas connection box;

[0031] The gas output from the dust removal units is output by the gas outlet pipe after dust removal is completed;

[0032] Periodically, the dust removal operation and the cleaning operation are performed;

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

[0034] During the dust removal operation, the dust-containing gas is temporarily stopped from entering the gas connection box, the base keeps rotating, the gas pipe and the anode keep making eccentric motion around the cathode, the gas source control system conveys pressure gas into the air duct, the airflow in the air duct rushes into the air bag to make the air bag instantaneously expand and beat the anode on the inner side, the dust attached to the anode is shaken off, and the electric dust collector resumes operation after the dust removal operation lasts for a period of time, and the gas source control system stops conveying pressure gas;

[0035] During the cleaning operation, the hanger is lifted to separate the cathode from the dust removal units, and then the cleaning mechanism is put in, and the plurality of cleaning barrels of the cleaning mechanism are respectively inserted into the anodes of the plurality of dust removal units, so that the cleaning barrels are coaxial with the rotating shaft of the base, and at the same time, the dust removal operation is performed, and the base rotates to make the air pipe and the anode eccentrically move around the cleaning barrel, and the anode collides with the cleaning barrel and the bristles on the cleaning barrel during the movement of the anode, so that the anode is cleaned, and the anode is also beaten by the continuously inflated air bag during the movement of the anode, so that the dust attached to the anode is cleaned, and after the cleaning operation is completed, the hanger drives the plurality of cleaning barrels to separate from the dust removal units, and then the hanger is moved and the plurality of cathodes are respectively inserted into the plurality of dust removal units, so that the operation of the electric dust collector is restored.

[0036] The beneficial effects of the present application are:

[0037] The plurality of cathode discharge wires are arranged in a circular shape, which improves the density of discharge points and ionization probability, and increases the discharge uniformity, and during the conveying of the dust-containing gas in the dust removal units, the air pipe and the anode eccentrically move around the cathode, so that the airflow generates flowability in the radial direction, and especially the part of the air pipe and the anode close to the cathode pushes the airflow close to the cathode during rotation, which improves the contact rate of the airflow and the cathode, improves the contact efficiency of the dust-containing gas and the cathode, makes the dust-containing gas carry negative charges quickly, and the contact efficiency of the anode with the dust-containing gas is also improved during the movement of the anode, so that the dust can be more quickly affected by the electric field force and move to the anode, thereby improving the dust removal efficiency, and the part of the anode closest to the cathode is a notch, and a partition is arranged in the notch to avoid the anode being too close to the cathode to affect the dust removal efficiency;

[0038] During the dust removal, the air bag on the inner wall of the air pipe is inflated to beat the anode, so that the dust on the anode is shaken off, the air bag has a certain elasticity, and it will not damage the anode when beating the anode, and compared with the traditional anode beating method, the plurality of air bags in the same beating unit are arranged on the inner wall of the air pipe in the vertical direction, so that the anode can be beaten everywhere, and the dust attached to the anode can be shaken off, and during the cleaning, the cathode is lifted out and the cleaning mechanism is put into the plurality of dust removal units, so that the anode in the plurality of dust removal units can be cleaned thoroughly, and during the cleaning process, not only the air bag will beat the anode to make it shake, which is beneficial to the falling of dust, but also the gas or liquid sprayed downward on the cleaning barrel will flush the anode, and the bristles on the cleaning barrel will clean the dust on the anode, so that the anode can be cleaned efficiently and thoroughly, the plurality of dust removal units are cleaned synchronously, the operation efficiency is high, and the electric dust collector can be restored to operation as soon as possible. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0040] Figure 1 is a structural diagram of the present application;

[0041] Figure 2 is a top view of the dust removal unit;

[0042] Figure 3 is a structural diagram of the air pipe side wall;

[0043] Figure 4 is Figure 3 is an enlarged view of A in the middle;

[0044] Figure 5 is a structural diagram of the cleaning mechanism.

[0045] Reference signs: 1, box; 2, gas connection box; 3, air inlet pipe; 4, air outlet pipe; 5, ash hopper; 6, solid pipe; 7, elbow pipe; 8, base; 9, ring groove; 10, support; 11, air pipe; 12, anode; 13, cathode; 14, base plate; 15, suspension; 16, partition plate; 17, air channel; 18, air bag; 19, perforated plate; 20, hard plate; 21, soft plate; 22, spring; 23, support plate; 24, air outlet hole; 25, one-way valve; 26, hanger; 27, pull rope; 28, cleaning cylinder; 29, brush; 30, cleaning pipe. DETAILED DESCRIPTION

[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 drawings and the description are considered to be exemplary in nature rather than limiting.

[0047] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present invention.

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

[0049] As Figures 1-4 shown in the drawings, the present application discloses an electric dust collector, comprising a box body 1, the bottom of the box body 1 is provided with a gas joint box 2, the bottom of the gas joint box 2 is provided with a plurality of ash hoppers 5, the gas joint box 2 is communicated with an air inlet pipe 3 at the top, and the top of the box body 1 is communicated with an air outlet pipe 4.

[0050] The top of the gas joint box 2 is provided with a plurality of dust removal units arranged in a matrix, dust-containing gas enters the gas joint box 2 from the air inlet pipe 3, and then enters the plurality of dust removal units for dust removal, and is then output from the air outlet pipe 4, and the dust in the dust removal unit can fall into the ash hopper 5 for discharge.

[0051] The dust removal unit comprises a base 8 arranged above the gas joint box 2, the base 8 is in a cylindrical shape, a cylindrical gas pipe 11 is vertically arranged at the top of the base 8, the gas pipe 11 is arranged at the edge of the base 8, and the gas pipe 11 is in an eccentric state on the base 8.

[0052] The bottom of the base 8 is provided with an elbow pipe 7, the elbow pipe 7 comprises a vertical part and a non-vertical part, the vertical part is coaxial with the base 8, the non-vertical part is arranged at the top of the vertical part, and the non-vertical part is connected to the base 8 and communicated with the inner side of the gas pipe 11.

[0053] The bottom end of the vertical part of the elbow pipe 7 is coaxially rotatably connected with a fixed pipe 6, the fixed pipe 6 is rotatably sealed with the vertical part of the elbow pipe 7, and the bottom end of the fixed pipe 6 is communicated with the top of the gas joint box 2.

[0054] The inner side of the gas pipe 11 is provided with an anode 12 which is coaxial with the gas pipe 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 gas pipe 11, and the cover ring makes the top of the gas pipe and the top of the anode 12 stably connected.

[0055] The inner side of the anode 12 is provided with a cathode 13, the cathode 13 is vertically arranged and coaxial with the base 8. The cathode 13 comprises a plurality of sawtooth discharge wires, the plurality of sawtooth discharge wires are arranged in a circular track coaxial with the base 8, and the plurality of sawtooth discharge wires are arranged at equal intervals on the circular track, and the discharge sawtooth of the sawtooth discharge wire points to the anode 12.

[0056] The top and bottom of the cathode 13 are respectively provided with circular base plates 14, the base plates 14 are connected with the top and bottom ends of the plurality of sawtooth discharge wires, the upper side of the plurality of dust removal units is provided with a suspension 15, and the suspension 15 is connected with the base plate 14 at the top of the cathode 13 through a hanger. The suspension 15 is movably connected to the box body 1 and can be detached.

[0057] The cross section of the anode 12 is an arc, which has a notch in the circumferential direction, and the notch is located closest to the cathode 13 on the anode 12. The partition plate 16 is arranged in the notch, and the cross section of the partition plate 16 is an arc which is adapted to the shape of the anode 12. The partition plate 16 and the anode 12 are spliced into a cylindrical shape which is coaxial with the air pipe 11.

[0058] The outer wall of the base 8 is coaxially provided with an outer ring gear, and the outer ring gears on the bases 8 of adjacent dust removal units are engaged. The box body 1 is also provided with a motor (not shown in the figure) which is in transmission connection with the outer ring gear. 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] The air pipe 11 is provided with a beating mechanism on the inner wall, which can beat the anode 12. The beating mechanism includes a plurality of beating units in the circumferential direction of the inner wall of the air pipe 11, and the plurality of beating units are arranged at equal intervals in the circumferential direction of the inner wall of the air pipe 11. The beating unit includes a plurality of air holes arranged at equal intervals in a vertical line on the inner wall of the air pipe 11, and the air pipe 11 is provided with an air duct 17 which is in communication with the plurality of air holes. The air hole is provided with an air bag 18, and the edge of the air bag 18 is in sealing connection with the inner wall of the air hole. A hole plate 19 is arranged in the air hole on the inner side of the air bag 18, and the hole plate 19 is provided with a through hole. An air inlet assembly is arranged in the through hole, and the airflow in the air duct 17 enters the air bag 18 through the air inlet assembly. The hole plate 19 on the side of the through hole is provided with an air outlet assembly, and the gas in the air bag 18 is discharged into the air duct 17 through the air outlet assembly.

[0060] The air inlet assembly includes a hard plate 20 arranged on the inner wall of the through hole and a soft plate 21 arranged on the side of the hard plate 20 close to the air bag 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 hard material, and a sealing layer is arranged on the surface of the hard plate 20. The sealing layer can be made of rubber. The soft plate 21 is made of rubber, and a supporting plate 23 is arranged on the side of the soft plate 21 close to the air bag 18. The supporting plate 23 is provided with a plurality of springs 22 connected with the soft plate 21. The springs 22 are tightly pressed on the soft plate 21 in the overlapping area with the hard plate 20, and the elastic force of the springs 22 makes the soft plate 21 in the overlapping area in close contact with the hard plate 20.

[0061] The air outlet assembly includes an air outlet hole 24 arranged on the hole plate 19, and the end of the air outlet hole 24 close to the air duct 17 is connected with a one-way valve 25.

[0062] The sidewall of the base 8 is provided with a ring groove 9, the side of the ring groove 9 is provided with a support 10 fixed with the box body 1, the support 10 is in sliding connection with the ring groove 9, the sidewall of the support 10 close to the ring groove 9 is provided with an air cavity, the support 10 at the edge of the air cavity is in sliding sealing with the ring groove 9, the support 10 is provided with a pressurizing pipe in communication with the air cavity, the pressurizing pipe is in communication with the air source control system, the air source control system delivers the gas with certain pressure to the pressurizing pipe. The bottom ends of the air channels 17 of the plurality of dust removal units extend to the ring groove 9 through the inside of the base 8, and the ends of the plurality of air channels 17 are arranged equidistantly in the ring groove 9, and the interval between the ends of the adjacent two air channels 17 on the ring groove 9 is not less than the coverage range of the air cavity on the ring groove 9, so that only the end of one air channel 17 can slide in the air cavity. When the base 8 rotates, the ring groove 9 slides relative to the support 10, the ends of the plurality of air channels 17 in the ring groove 9 circulate through the air cavity in the support 10, the air channel 17 is in communication with the air cavity, the pressurizing pipe delivers the gas with certain pressure into the air cavity, the pressure gas enters the air channel 17 in the air cavity, when the air pressure in the air channel 17 increases to a certain degree, the seal between the soft plate 21 and the hard plate 20 is not enough to block the through hole, the airflow in the air channel 17 will rush through the gap between the soft plate 21 and the hard plate 20 and enter the air bag 18 to make the air bag 18 instantaneously expand, in this process, the spring 22 is compressed, the soft plate 21 elastically deforms towards the support plate 23, after the air bag 18 and the air pressure in the air channel 17 are balanced, the soft plate 21 rebounds and tightly contacts the hard plate 20 again to block the through hole under the action of the elastic force of the spring 22 and the elastic force of the soft plate 21, when the end of the air channel 17 slides through the air cavity and separates from the support 10 with the rotation of the base 8, the airflow in the air channel 17 rushes out of the end of the air channel 17 and disperses into the environment, the pressure in the air channel 17 decreases, there is a pressure difference between the air channel 17 and the air bag 18, the gas in the air bag 18 is discharged into the air channel 17 and discharged by the exhaust assembly, in this process, the air bag 18 also pushes the gas to discharge due to the elastic force, with the rotation of the base 8, the above process is repeated continuously to realize the intermittent expansion and contraction of the air bag 18, when the air bag 18 expands, it produces a beating on the anode 12 on the inner side to make the dust on the anode 12 fall off.

[0063] As shown in Figure 5 , the electric dust collector further comprises a cleaning mechanism, the cleaning mechanism comprises a hanging bracket 26, the bottom of the hanging bracket 26 is provided with a plurality of cleaning units corresponding to the dust removal units, and the hanging bracket 26 can move to insert the plurality of cleaning units into the anodes 12 of the plurality of dust removal units respectively.

[0064] The cleaning unit comprises a cleaning cylinder 28 suspended at the bottom of the hanger 26, and the top of the cleaning cylinder 28 is suspended from the hanger 26 through a pull rope 27. The cleaning cylinder 28 is in a cylindrical shape, and has a cavity inside. The outer wall of the cleaning cylinder 28 is covered with a plurality of brush hairs 29. A plurality of through holes are arranged in a matrix on the outer wall of the cleaning cylinder 28. The through holes are arranged obliquely, and the lower end of the through hole faces the outside of the cleaning cylinder 28. The hanger 26 is provided with a cleaning pipe 30 which is in communication with the cavity inside the cleaning cylinder 28. The cleaning pipe 30 can convey cleaning liquid or gas with a certain pressure into the cavity inside the cleaning cylinder 28.

[0065] The application further discloses a use method of the electric dust collector, comprising:

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

[0067] The gas output by the dust removal units is output by the gas outlet pipe 4;

[0068] The ash removal operation and the cleaning operation are periodically performed;

[0069] When the dust-containing gas is conveyed upwards in the dust removal unit, the base 8 drives the gas pipe 11 and the anode 12 to make eccentric motion around the cathode 13, and the diaphragm 16 in the gap of the anode 12 is always closest to the cathode 13 during the motion process;

[0070] During the ash removal operation, the dust-containing gas is temporarily stopped from entering the gas connection box 2, the base 8 keeps rotating, the gas pipe 11 and the anode 12 keep making eccentric motion around the cathode 13, the pressurizing pipe conveys gas with a certain pressure into the air cavity of the support 10, and the end of the air channel 17 on the ring groove 9 enters the support 10 and communicates with the air cavity after the rotation of the base 8. When the air pressure is enough to rush through the air inlet assembly, the gas flow in the air channel 17 rushes into the air bag 18 to make the air bag 18 instantaneously expand and beat the anode 12 on the inner side. The dust attached to the anode 12 is shaken off and falls into the ash bucket 5. After the ash removal operation lasts for a period of time, the electric dust collector resumes work, and the pressurizing pipe stops conveying the pressure gas;

[0071] When the cleaning operation is performed, the suspension 15 is lifted to separate the cathode 13 from the dust removal units, then the cleaning mechanism is put in, the plurality of cleaning units of the cleaning mechanism are respectively inserted into the plurality of anodes 12 of the dust removal units, and the cleaning barrel 28 of the cleaning unit is coaxial with the base 8, then the cleaning pipe 30 sends liquid or gas with a certain pressure into the cavity of the cleaning barrel 28, the liquid or gas is obliquely downwardly discharged through the through hole on the surface of the cleaning barrel 28 and washes the anode 12, at the same time, the dust removal operation is performed, the base 8 rotates to make the air pipe 11 and the anode 12 eccentrically move around the cleaning barrel 28, the anode 12 collides with the cleaning barrel 28 and the bristles 29 on the cleaning barrel 28 during the movement, and the anode 12 is cleaned, and the cleaning barrel 28 is connected with the hanger 26 through the pull rope 27, the cleaning barrel 28 shakes after being collided by the anode 12, the contact rate of the cleaning barrel 28 and the anode 12 is improved, and the anode 12 is continuously beaten by the air bag 18 which is continuously inflated during the movement, so that the dust attached to the anode 12 is cleaned, after the cleaning operation is completed, the hanger 26 drives the plurality of cleaning units to separate from the dust removal units, then the suspension 15 is moved and the plurality of cathodes 13 are respectively inserted into the plurality of dust removal units, so that the operation of the electric dust remover is restored.

[0072] The above embodiments are only preferred embodiments of the present application, and are not a limitation on the technical solutions of the present application, and any technical solutions which can be realized on the basis of the above embodiments without creative labor should be considered to fall within the protection scope of the present application.

Claims

1. An electrostatic precipitator, characterized in that, include: Box; The air-sealing box is located inside the box. The ash hopper is located at the bottom of the gas separator. The intake pipe and exhaust pipe are connected to the air manifold and the housing, respectively; Multiple dust collection units are located on top of the air manifold, including: The base is rotatably mounted on the gas manifold; The trachea is located on the base and connected to the air manifold; The anode is located on a base inside the trachea; The percussion mechanism is located on the inner wall of the trachea; The suspension is located above multiple dust removal units; Multiple cathodes are connected below the suspension and inserted into the inside of multiple anodes respectively; The cathode includes multiple sawtooth discharge lines, which are arranged in a circular trajectory coaxial with the rotation axis of the base, with the discharge teeth of the sawtooth discharge lines pointing towards the anode. The pounding mechanism includes multiple pounding units in the circumferential direction of the inner wall of the trachea. Each pounding unit includes multiple air holes arranged axially in the inner wall of the trachea. Each air hole contains an air bladder. An air passage is provided in the inner wall of the trachea inside the air hole. The air passage is connected to the air source control system. The electrostatic precipitator also includes a cleaning mechanism, which includes a hanger with multiple cleaning cylinders at positions adapted to the dust removal unit suspended at the bottom of the hanger. The outer wall of the cleaning cylinders is covered with several bristles. The base is cylindrical, and an annular groove is provided on the side wall of the base. A support fixed to the housing is provided on the side of the annular groove. An air cavity is provided on the side wall of the support near the annular groove. The support at the edge of the air cavity is slidably sealed with the annular groove. A pressurizing pipe communicating with the air cavity is provided on the support. The pressurizing pipe is connected to 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 area of ​​the air cavity on the annular groove.

2. The electrostatic precipitator according to claim 1, characterized in that, Multiple sawtooth discharge lines are arranged at equal intervals on their annular arrangement trajectory. The top and bottom of the cathode are respectively provided with circular substrates. The substrates are connected to the top and bottom ends of the multiple sawtooth discharge lines. The suspension is connected to the substrate at the top of the cathode by a hanger.

3. The electrostatic precipitator according to claim 1, characterized in that, The trachea is cylindrical and located near the edge of the base. The trachea is eccentrically positioned on the base. A bend is provided at the bottom of the base. One end of the bend is connected to the inside of the trachea, and the other end of the bend is rotatably connected to the top of the gas manifold and rotated to seal it. The rotation axis of the bend and the gas manifold rotatably connected end is coaxial with the rotation axis of the base.

4. The electrostatic precipitator according to claim 3, characterized in that, The anode has a superior arc-shaped cross section with a notch in the circumferential direction. The notch is located on the anode near the cathode. A partition is provided inside the notch. The partition has a inferior arc-shaped cross section that matches the shape of the anode. The partition and the anode are spliced ​​together to form a cylindrical shape coaxial with the gas tube.

5. The electrostatic precipitator according to claim 1, characterized in that, An air vent plate is provided inside the air vent on the inner side of the airbag. The air vent plate has a through hole and an air intake component is provided inside the through hole. The airflow in the air passage enters the airbag through the air intake component. An exhaust component is provided on the air vent plate on the side of the through hole. The gas in the airbag is discharged into the air passage through the exhaust component. The exhaust component includes an exhaust hole provided on the air vent plate. A one-way valve is connected to the end of the exhaust hole near the air passage.

6. The electrostatic precipitator according to claim 5, characterized in that, The air intake assembly includes a rigid plate and a flexible plate disposed on the inner wall of the through hole. The flexible plate is located on the side of the rigid plate near the airbag. The flexible plate and the rigid plate block the through hole and there is an overlapping area between them. The flexible plate and the rigid plate are in close contact within the overlapping area.

7. The electrostatic precipitator according to claim 6, characterized in that, The rigid plate has a sealing layer on its surface, the flexible plate is made of rubber, and the flexible plate near the airbag side is also provided with a support plate connected to the inner wall of the through hole. The support plate is provided with multiple springs connected to the flexible plate, and the springs are pressed tightly against the flexible plate in the area overlapping with the rigid plate.

8. The electrostatic precipitator according to claim 1, characterized in that, The top of the cleaning cylinder is connected to the hanger by a rope. The cleaning cylinder is cylindrical and has an internal cavity. Multiple through holes are evenly arranged in a matrix on the outer wall of the cleaning cylinder. The through holes are inclined and the lower end of the through holes faces the outside of the cleaning cylinder. The hanger is equipped with a cleaning pipe that communicates with the internal cavity of the cleaning cylinder. The cleaning pipe can deliver cleaning liquid or gas into the internal cavity of the cleaning cylinder.

9. A method of using the electrostatic precipitator as described in any one of claims 1 to 8, characterized in that, include: The air inlet pipe delivers 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 discharged through the exhaust pipe; Periodic dust removal and cleaning operations are carried out; When the dust-laden gas is transported from bottom to top in the dust removal unit, the base rotates, causing the gas pipe and anode to make an eccentric motion around the cathode. During the dust removal operation, the dust-laden gas stops entering the gas manifold, the base continues to rotate, and the gas pipe and anode continue to move eccentrically around the cathode. The gas source control system delivers pressurized gas into the gas duct. The airflow in the gas duct rushes into the air bag, causing the air bag to expand instantly and beat the anode on the inside. The dust attached to the anode is shaken off. After the dust removal operation continues for a period of time, the electrostatic precipitator resumes operation, and the gas source control system stops delivering pressurized gas. During cleaning, the suspension is raised to remove the cathode from the dust removal unit, and then the cleaning mechanism is inserted. Multiple cleaning cylinders of the cleaning mechanism are inserted into the anodes of multiple dust removal units, so that the rotating shafts of the cleaning cylinders and the base are coaxial. At the same time, the dust removal operation is carried out. The base rotates, causing the air pipe and the anode to 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 pounded by the continuously expanding airbag, and the dust attached to the anode is removed. After the cleaning operation is completed, the suspension drives multiple cleaning cylinders to be removed from the dust removal unit, and then the suspension is moved and multiple cathodes are inserted into multiple dust removal units to restore the operation of the electrostatic precipitator.

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