CN218742524U

CN218742524U - Dust collecting device for electric dust removal

Info

Publication number: CN218742524U
Application number: CN202223061165.9U
Authority: CN
Inventors: 翟陈婷; 李新; 孟凡玲; 刘泽波
Original assignee: Inner Mongolia Mengdong Energy Co ltd; National Energy Group Guoyuan Power Co Ltd
Current assignee: Inner Mongolia Mengdong Energy Co ltd; National Energy Group Guoyuan Power Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-03-28
Anticipated expiration: 2032-11-17

Abstract

The present disclosure relates to a dust collecting device for electric precipitation, which comprises a hopper, a dust collecting box, a pushing mechanism, a dredging rod and a motor; the top of hopper has first opening, the top of hopper is used for being connected with electrostatic precipitator's discharge gate, the bottom of hopper has the second opening, the dust collection box is connected in the bottom of hopper, pushing mechanism connects in the hopper, the mediation pole is connected in pushing mechanism's promotion end, pushing mechanism's one end orientation second opening is kept away from to the mediation pole, pushing mechanism can promote the mediation pole and stretch out the hopper through the second opening, the drive end and the pushing mechanism transmission of motor are connected and drive the round trip reciprocating motion of mediation pole. This dust collection device realizes promoting the dust of the second opening part of hopper through the pushing mechanism who sets up and mediation pole for in the dust collecting box is constantly dropped to the dust in the hopper, avoid the dust in the hopper to block up the second opening.

Description

Dust collecting device for electric dust removal

Technical Field

The disclosure relates to the technical field of flue gas dust removal, in particular to a dust collecting device for electric dust removal.

Background

Thermal power factory generally adopts electrostatic precipitator to clear away granule smoke and dust in the flue gas that the boiler produced, and the electrostatic precipitator mainly realizes clearing away the granule smoke and dust through the electrosorption, so need clear up the collection to the last adsorbed dust of electrostatic precipitator after the electrostatic precipitator work certain time.

At present, when dust is collected by a dust collecting device of an electric dust collector, a hole opening for dust to pass is easily blocked, so that the blocking phenomenon is caused, and when the blocking position needs to be dredged, the electric dust collector needs to be stopped to operate, the collection of the dust is influenced, and the clearing effect of the electric dust collector on particle smoke dust is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dust collection device for electric precipitation to solve above-mentioned current device and appear phenomenon such as jam easily, influence the problem that the dust was collected.

In order to achieve the above object, the present disclosure provides a dust collecting device for electric precipitation, comprising a hopper, a dust collecting box, a pushing mechanism, a dredging rod and a motor;

the top of hopper has first opening, the top of hopper is used for being connected with electrostatic precipitator's discharge gate, the bottom of hopper has the second opening, the dust collection box connect in the bottom of hopper, pushing mechanism connects in the hopper, dredge the pole connect in pushing mechanism's promotion end, dredge the pole and keep away from pushing mechanism's one end orientation the second opening, pushing mechanism can promote dredge the pole warp the second opening stretches out the hopper, the drive end of motor with the pushing mechanism transmission is connected and is driven dredge the pole reciprocating motion that makes a round trip, so that dredge the pole can dredge the second opening.

Optionally, the pushing mechanism includes a connecting rod assembly and a screw nut pair, a driving end of the motor is in transmission connection with the screw nut pair, a first end of the connecting rod assembly is connected with a movable end of the screw nut pair, and a second end of the connecting rod assembly is connected with the dredging rod.

Optionally, the screw-nut pair includes a first lead screw, a first moving block, a second lead screw, a second moving block and a middle rod, the first lead screw and the second lead screw are respectively connected to two ends of the middle rod, one end of the middle rod, which is far away from the first lead screw, and one end of the middle rod, which is far away from the second lead screw, are both connected with the inner wall of the hopper through bearings in a rotating manner, the first moving block is connected with the first lead screw in a rotating manner, the second moving block is connected with the second lead screw in a rotating manner, one end of the middle rod, which is far away from the first lead screw, is connected with the driving end of the motor in a transmission manner, the motor can drive the first moving block and the second moving block to be drawn close to or away from each other, and the first end of the connecting rod assembly is connected with the first moving block and the second moving block.

Optionally, the link assembly includes a first rod and a second rod, a first end of the first rod is hinged to the first moving block, a first end of the second rod is hinged to the second moving block, and a second end of the first rod and a second end of the second rod are both hinged to the pull rod.

Optionally, the dust collecting device further includes a limiting member, the limiting member is connected to the inner wall of the hopper, a limiting hole facing the second opening is formed in the limiting member, and one end of the dredging rod, which is far away from the pushing mechanism, slides through the limiting hole.

Optionally, the dust collecting device further comprises a transmission mechanism;

drive mechanism includes bull stick, first bevel gear, second bevel gear and pivot, first bevel gear connect in the pivot, second bevel gear connect in the bull stick, first bevel gear with second bevel gear meshes, the pivot connect in the drive end of motor, the one end rotation of bull stick penetrates in the hopper and with pushing mechanism connects.

Optionally, the transmission mechanism further comprises a fixed block, the fixed block is connected to the outer wall of the hopper, and one end, far away from the motor, of the rotating shaft is rotatably connected with the fixed block.

Optionally, the number of the hoppers and the number of the dust boxes are two, and the motor and the transmission mechanism are located between the two hoppers.

Optionally, the dust collecting device further comprises a mounting plate connected to an outer wall of the hopper, and the motor is connected to the mounting plate.

Optionally, a viewing glass is provided on the dust bin.

Above-mentioned technical scheme is used for assembling the discharged dust through electrostatic precipitator's discharge gate through the hopper that sets up for convenient unified processing in the dust collecting tank is collected to the dust. Through the pushing mechanism and the dredging rod that set up, pushing mechanism can drive the dredging rod and carry out reciprocating motion towards the second opening of hopper to the one end that pushing mechanism was kept away from to the dredging rod can stretch out the hopper, thereby realize promoting the dust of the second opening part of hopper, make the dust in the hopper constantly drop to the dust collecting tank in, avoid the dust in the hopper to block up the second opening, thereby can guarantee the collection effect to electrostatic precipitator exhaust dust, also guaranteed the effect to the flue gas dust removal.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic view of a hopper and an electric precipitator in connection according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the internal structure of a hopper according to an embodiment of the present disclosure;

FIG. 3 is a structural schematic view from a top down of a hopper of an embodiment of the present disclosure;

FIG. 4 is an enlarged schematic view of position A of FIG. 1 of one embodiment of the present disclosure.

Description of the reference numerals

1. An electric dust collector; 2. a leg; 3. a hopper; 4. a dust collection box; 5. observing glass; 6. a pushing mechanism; 61. a first lead screw; 62. an intermediate lever; 63. a second lead screw; 64. a second moving block; 65. a connecting rod assembly 66, a first moving block; 7. a transmission mechanism; 71. a rotating rod; 72. a second bevel gear; 73. a first bevel gear; 74. a rotating shaft; 75. a fixed block; 8. a limiting member; 9. dredging the rod; 10. a motor; 11. and (7) mounting the plate.

Detailed Description

The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" are generally defined in the direction of the drawing plane of the drawings, and "inner and outer" refer to the inner and outer of the relevant component parts. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present disclosure, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood as a specific case by a person of ordinary skill in the art.

The electric dust collector 1 is a necessary matching device of the thermal power plant, and the electric dust collector 1 has the function of removing the particle smoke dust in the smoke discharged by a coal-fired or oil-fired boiler, thereby greatly reducing the smoke dust discharged into the atmosphere, and being an important environmental protection device for improving the environmental pollution and the air quality.

The working principle of the electric dust remover 1 is that smoke dust of the smoke dust is positively charged when the smoke gas passes through a flue in front of the main structure of the electric dust remover 1, and then the smoke gas enters a channel of the electric dust remover 1 with a plurality of layers of cathode plates. The smoke dust with positive charges and the cathode electroplate are adsorbed on the cathode, so that the particle smoke dust in the smoke gas is adsorbed on the cathode, and the particle smoke dust is removed through electric adsorption.

And in order to avoid absorbent dust too much on the negative plate, need clear up the dust on the electrostatic precipitator 1 after 1 work of electrostatic precipitator for a certain time, strike the negative plate through regularly, make the dust that has certain thickness drop and collect in hopper 3 of 1 structure below of electrostatic precipitator under the dual function of dead weight and vibration, hopper 3 mainly is for leaking hopper-shaped to reach the purpose of cleaing away the smoke and dust in the flue gas.

At present, when dust is collected by a dust collecting device of the electric dust collector 1, the amount of dust once falling is large, and meanwhile, certain impurities can be adsorbed and fall into the hopper 3 together, so that a hole opening for passing the dust is easily blocked, the blocking phenomenon is caused, when the blocking position needs to be dredged, the operation can be carried out only by stopping the machine, the collection of the dust is influenced, and the clearing effect of the electric dust collector 1 on particle smoke dust is further influenced.

To this end, as shown in fig. 1 to 4, the present disclosure provides a dust collecting apparatus for electric dust removal, including a hopper 3, a dust box 4, a pushing mechanism 6, a dredging bar 9, and a motor 10.

The top of hopper 3 has first opening, the top of hopper 3 is used for being connected with electrostatic precipitator 1's discharge gate, the bottom of hopper 3 has the second opening, dust collection box 4 connects in the bottom of hopper 3, pushing mechanism 6 connects in hopper 3, dredging rod 9 is connected in pushing mechanism 6's promotion end, the one end that pushing mechanism 6 was kept away from to dredging rod 9 is towards the second opening, pushing mechanism 6 can promote dredging rod 9 and stretch out hopper 3 through the second opening, the drive end of motor 10 is connected and drives dredging rod 9 reciprocating motion back and forth with the transmission of pushing mechanism 6, so that dredging rod 9 can dredge the second opening.

Wherein, the dust that electrostatic precipitator 1 followed discharge gate exhaust can enter into hopper 3 through first opening, collects leading-in 4 of dust collection box through hopper 3 in, handles in unison through dust collection box 4.

The hopper 3 is of a funnel structure, and the length and width of a first opening of the hopper 3 are larger than those of a second opening of the hopper 3.

Wherein, pushing mechanism 6 is located hopper 3, does benefit to through pushing mechanism 6 and drives dredging rod 9 and remove towards the second opening to stretch out hopper 3 through the second opening, make the dust with the second opening part of hopper 3 push into dust collection box 4, along with the operation that motor 10 drove pushing mechanism 6 can realize dredging rod 9 and make a round trip reciprocating motion, thereby dredging rod 9 can constantly dredge the dust of the second opening part of hopper 3. It should be noted that the back and forth reciprocating motion of the dredging rod 9 can be realized by the forward rotation and the reverse rotation of the motor 10.

Among the above-mentioned technical scheme, hopper 3 through setting up is used for assembling the dust through the discharge gate exhaust of electrostatic precipitator 1 for convenient unified processing is collected to the dust in dust collection box 4 to the dust. Through the pushing mechanism 6 and the dredge rod 9 that set up, pushing mechanism 6 can drive dredge rod 9 and carry out reciprocating motion towards the second opening of hopper 3, and the one end that pushing mechanism 6 was kept away from to dredge rod 9 can stretch out hopper 3, thereby the realization promotes the dust of the second opening part of hopper 3, make the dust in the hopper 3 constantly drop to in the dust collection box 4, avoid the dust in the hopper 3 to block up the second opening, thereby can guarantee the collection effect to the dust of electrostatic precipitator 1 exhaust, the effect of removing dust to the flue gas has also been guaranteed.

Alternatively, in an embodiment of the present disclosure, the top of the dust box 4 is detachably connected to the bottom of the hopper 3, so that the dust box 4 can be removed from the hopper 3, and thus the dust collected in the dust box 4 can be uniformly disposed.

Optionally, the top accessible flange of hopper 3 is connected with the discharge gate of electrostatic precipitator 1, and the bottom of electrostatic precipitator 1 is provided with stabilizer blade 2 for raise electrostatic precipitator 1, can make things convenient for the installation of hopper 3 and dust collection box 4.

In some examples, the four corners of the bottom of the electric dust collector 1 are provided with the support legs 2, so that the stability of the electric dust collector 1 can be ensured.

Optionally, in an embodiment of the present disclosure, the pushing mechanism 6 includes a link assembly 65 and a screw nut pair, a driving end of the motor 10 is in transmission connection with the screw nut pair, a first end of the link assembly 65 is connected with a movable end of the screw nut pair, and a second end of the link assembly 65 is connected with the dredge rod 9.

Wherein, in this embodiment, the motor 10 can drive the screw-nut pair to operate to can produce the ascending removal of straight line direction, and the first end of link assembly 65 is connected with the expansion end of screw-nut pair, and the operation along with the screw-nut pair drives link assembly 65 and moves, thereby drives dredging rod 9 and carries out reciprocating motion.

The screw-nut pair is matched with the motor 10 to realize the linear reciprocating motion, so that the dredging rod 9 is driven to perform the linear reciprocating motion. Wherein the linkage assembly 65 can facilitate the transfer of kinetic energy to the pull through 9.

Optionally, in an embodiment of the present disclosure, the lead screw nut pair includes a first lead screw 61, a first moving block 66, a second lead screw 63, a second moving block 64, and a middle rod 62, the first lead screw 61 and the second lead screw 63 are respectively connected to two ends of the middle rod 62, one end of the first lead screw 61, which is away from the middle rod 62, and one end of the second lead screw 63, which is away from the middle rod 62, are both rotationally connected to an inner wall of the hopper 3 through a bearing, the first moving block 66 is rotationally connected to the first lead screw 61, the second moving block 64 is rotationally connected to the second lead screw 63, one end of the first lead screw 61, which is away from the middle rod 62, is in transmission connection with a driving end of the motor 10, the motor 10 can drive the first moving block 66 and the second moving block 64 to approach each other or to be away from each other, and a first end of the connecting rod assembly 65 is connected to the first moving block 66 and the second moving block 64.

In the present embodiment, the intermediate rod 62 is located between the first lead screw 61 and the second lead screw 63, and the intermediate rod 62 is used for transmission, so that the first lead screw 61 and the second lead screw 63 coaxially rotate, and thus the first lead screw 61 and the second lead screw 63 can be simultaneously driven to rotate by one motor 10, so that the first moving block 66 and the second moving block 64 can perform linear motion.

In order to enable the first moving block 66 and the second moving block 64 to be close to or away from each other, the thread arrangement directions on the first lead screw 61 and the second lead screw 63 are opposite, so that when the motor 10 drives the first lead screw 61 and the second lead screw 63 to rotate forwards and backwards, the first moving block 66 and the second moving block 64 can be close to or away from each other.

In this example, the dredging rod 9 is in a vertical state with the first lead screw 61 and the second lead screw 63, the first lead screw 61 and the second lead screw 63 are horizontally arranged, the dredging rod 9 is vertically arranged, the middle rod 62 is also horizontally arranged, and the dredging rod 9 is located below the middle rod 62. The connecting rod assembly 65 can transmit the linear motion of the first moving block 66 and the second moving block 64 to the dredging rod 9, so that the dredging rod 9 can be driven to be far away from the middle rod 62 or be close to the middle rod 62 along with the mutual approaching or mutual keeping away of the first moving block 66 and the second moving block 64, and the back-and-forth reciprocating motion of the dredging rod 9 is realized.

Optionally, in an embodiment of the present disclosure, the connecting rod assembly 65 includes a first rod and a second rod, a first end of the first rod is hinged to the first moving block 66, a first end of the second rod is hinged to the second moving block 64, and a second end of the first rod and a second end of the second rod are both hinged to the dredging rod 9.

In the embodiment, the first end of the first rod is hinged to the first moving block 66 through a pin, the second end of the first rod is hinged to the dredging rod 9 through a pin, the first end of the second rod is hinged to the second moving block 64 through a pin, the second end of the second rod is hinged to the dredging rod 9 through a pin, the first rod, the second rod, the middle rod 62 and part of the first lead screw 61 and the second lead screw 63 can jointly form a triangle, so that when the first moving block 66 and the second moving block 64 move, the first rod and the second rod can be driven to move, and the first rod and the second rod can push or pull the dredging rod 9 to move.

Alternatively, in other embodiments, the screw nut pair is parallel to the dredge rod 9, the dredge rod 9 is moved towards the second opening of the hopper 3 along with the linear movement of the screw nut pair, and the reciprocating movement of the dredge rod 9 is realized along with the forward rotation and the reverse rotation of the motor 10.

Optionally, in another embodiment of the present disclosure, the pushing assembly includes a rotating rod and a crankshaft, the dredging rod 9 is connected to the crankshaft, the crankshaft is connected to the rotating rod, the driving end of the motor 10 is connected to the rotating rod, and the rotating rod is driven to rotate by the motor 10, so that the crankshaft rotates along with the rotating rod, and the reciprocating motion of the dredging rod 9 is realized.

Optionally, in an embodiment of the present disclosure, the dust collecting device further includes a limiting member 8, the limiting member 8 is connected to an inner wall of the hopper 3, a limiting hole facing the second opening is formed in the limiting member 8, and one end of the dredging rod 9, which is far away from the pushing mechanism 6, slides through the limiting hole.

In the embodiment, the limiting member 8 is vertically arranged with the dredging rod 9, the limiting member 8 is horizontally arranged, and the limiting hole is vertically through. Make dredging rod 9 can remove along the axial direction in spacing hole through the spacing hole that sets up to make dredging rod 9 just to the second opening, promote the dust of second opening part, realize the mediation effect.

In some examples, the limiting member 8 is located below the pushing mechanism 6, and the limiting member 8 is close to the second opening. The stop 8 is configured as a cross bar. It should be noted that the limiting member 8 only plays a role in limiting the dredging rod 9, and the limiting member 8 does not play a role in blocking falling dust, so that the dust is not influenced to fall into the second opening.

Optionally, in an embodiment of the present disclosure, the dust collecting device further comprises a transmission mechanism 7.

The transmission mechanism 7 comprises a rotating rod 71, a first bevel gear 73, a second bevel gear 72 and a rotating shaft 74, wherein the first bevel gear 73 is connected to the rotating shaft 74, the second bevel gear 72 is connected to the rotating rod 71, the first bevel gear 73 is meshed with the second bevel gear 72, the rotating shaft 74 is connected to the driving end of the motor 10, and one end of the rotating rod 71 is rotatably inserted into the hopper 3 and is connected with the pushing mechanism 6.

In the embodiment, the rotating shaft 74 and the rotating rod 71 are perpendicular to each other, the motor 10 is configured to drive the rotating shaft 74 to rotate, the rotating shaft 74 transmits kinetic energy to the rotating rod 71 through the first bevel gear 73 and the second bevel gear 72, and the rotating rod 71 is configured to be connected with the first lead screw 61, so as to drive the first lead screw 61, the intermediate rod 62, and the second lead screw 63 to rotate.

It is understood that the first bevel gear 73 can rotate coaxially with the rotation shaft 74, and the second bevel gear 72 can rotate coaxially with the rotation shaft 71.

In some examples, one end of the rotating rod 71 is rotatably inserted into the hopper 3 and is splined to the end of the first lead screw 61, thereby achieving the kinetic energy transfer.

By such an arrangement, the position of the motor 10 can be conveniently installed, so that the rotation direction can be changed by the first bevel gear 73 and the second bevel gear 72, and the first lead screw 61, the intermediate lever 62 and the second lead screw 63 can be driven to rotate.

Optionally, in an embodiment of the present disclosure, the transmission mechanism 7 further includes a fixed block 75, the fixed block 75 is connected to an outer wall of the hopper 3, and an end of the rotating shaft 74 away from the motor 10 is rotatably connected to the fixed block 75.

In this embodiment, the fixing block 75 is used to support the rotating shaft 74, so as to ensure the rotating stability of the rotating shaft 74, and one end of the rotating shaft 74, which is far away from the motor 10, is rotatably connected to the fixing block 75 through a bearing.

Optionally, in an embodiment of the present disclosure, the number of the hoppers 3 and the dust boxes 4 is two, and the motor 10 and the transmission mechanism 7 are located between the two hoppers 3.

Wherein, in this embodiment, two hopper 3 parallel arrangement, two hopper 3 can meet respectively and get the discharge gate exhaust dust of electrostatic precipitator 1, improve the collection volume of dust. The two hoppers 3 are internally provided with the dredging rods 9 and the pushing mechanisms 6, the number of the motors 10 is one, the number of the transmission mechanisms 7 is also one, and two ends of a rotating rod 71 in the transmission mechanism 7 respectively rotate to penetrate into the two hoppers 3, so that one motor 10 and the transmission mechanism 7 can drive the two dredging rods 9 to reciprocate back and forth.

Optionally, in an embodiment of the present disclosure, the dust collecting apparatus further includes a mounting plate 11, the mounting plate 11 is connected to an outer wall of the hopper 3, and the motor 10 is connected to the mounting plate 11. The motor 10 is conveniently fixed by the mounting plate 11. In some examples, the mounting plate 11 is located below the fixed block 75.

Optionally, in one embodiment of the present disclosure, a viewing glass 5 is provided on the dust box 4. An operator can observe the falling condition of the dust at the bottoms of the dust collection box 4 and the hopper 3 through the observation glass 5, so that whether blockage occurs or not can be conveniently judged, and maintenance treatment can be timely carried out.

The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A dust collecting device for electric precipitation is characterized by comprising a hopper, a dust collecting box, a pushing mechanism, a dredging rod and a motor;

2. The dust collecting device for electric precipitation as claimed in claim 1, wherein the pushing mechanism comprises a connecting rod assembly and a screw nut pair, the driving end of the motor is in transmission connection with the screw nut pair, the first end of the connecting rod assembly is connected with the movable end of the screw nut pair, and the second end of the connecting rod assembly is connected with the dredging rod.

3. The dust collecting device for electric dust removal according to claim 2, wherein the screw-nut pair comprises a first screw rod, a first moving block, a second screw rod, a second moving block and a middle rod, the first screw rod and the second screw rod are respectively connected to two ends of the middle rod, one end of the first screw rod, which is far away from the middle rod, and one end of the second screw rod, which is far away from the middle rod, are both connected with the inner wall of the hopper through bearings in a rotating manner, the first moving block is connected to the first screw rod in a rotating manner, the second moving block is connected to the second screw rod in a rotating manner, one end of the first screw rod, which is far away from the middle rod, is connected with the driving end of the motor in a transmission manner, the motor can drive the first moving block and the second moving block to approach each other or to be far away from each other, and the first end of the connecting rod assembly is connected with the first moving block and the second moving block.

4. The dust collecting device for electric precipitation as claimed in claim 3, wherein the link assembly comprises a first rod and a second rod, a first end of the first rod is hinged to the first moving block, a first end of the second rod is hinged to the second moving block, and a second end of the first rod and a second end of the second rod are both hinged to the dredging rod.

5. The dust collecting device for electric precipitation of claim 1, further comprising a limiting member connected to the inner wall of the hopper, wherein the limiting member is provided with a limiting hole facing the second opening, and one end of the dredging rod away from the pushing mechanism slides through the limiting hole.

6. The dust collecting device for electric precipitation of claim 1, further comprising a transmission mechanism;

7. The dust collecting device for electric precipitation as claimed in claim 6, wherein the transmission mechanism further comprises a fixed block, the fixed block is connected to the outer wall of the hopper, and one end of the rotating shaft, far away from the motor, is rotatably connected with the fixed block.

8. The dust collecting device for electric precipitation as claimed in claim 6, wherein the number of the hoppers and the dust boxes is two, and the motor and the transmission mechanism are located between the two hoppers.

9. The dust collecting device for electric precipitation of claim 1, further comprising a mounting plate connected to an outer wall of the hopper, wherein the motor is connected to the mounting plate.

10. The dust collecting device for electric precipitation as recited in any one of claims 1 to 9, wherein a viewing glass is provided on the dust box.