Cathode rapping device of electric precipitation equipment and electric precipitation equipment

Abstract

The utility model discloses a cathode rapping device of electric precipitation equipment, which is used for reducing the influence caused by the shaking of the tail end of a rapping main shaft of the cathode rapping device of the electric precipitation equipment. The utility model provides a cathode rapping device of electric precipitation equipment, which comprises a motor, a main shaft driven by the motor and a plurality of auxiliary shafts arranged in parallel, the rotation of the main shaft drives the auxiliary shafts to rotate through a transmission mechanism, and a plurality of rapping components are arranged on the auxiliary shafts at intervals. The auxiliary shaft rotates to drive the rapping assembly to conduct rapping, a limiting piece is arranged at the end, away from the motor, of the main shaft and comprises a fixed part fixedly arranged and a limiting part arranged at one end of the fixed part, a limiting groove is formed in the limiting part, and one end of the main shaft is rotationally limited in the limiting groove. According to the cathode rapping device, shaking of the end, away from the main shaft, of the main shaft is reduced. The utility model further provides electric precipitation equipment which comprises the cathode rapping device in the scheme.

Description

Technical Field

[0001] The utility model relates to the field of electrostatic precipitators, especially a cathode rapping device for an electrostatic precipitator. Background Art

[0002] For large electrostatic precipitators, such as those in thermal power plants, they have cathode assemblies with several cathode wires. The cathode wires will accumulate dust during the dust removal process and need to be rapped regularly to remove the dust.

[0003] In the prior art, an electrostatic precipitator usually includes a cathode rapping device. The cathode rapping device includes a rapping motor, a longitudinally arranged rapping main shaft, a transversely arranged rapping auxiliary shaft, and multiple rapping components installed on the rapping auxiliary shaft. The rapping components correspond to the positions of the cathode wires on the cathode assembly. The rapping motor drives the rapping main shaft to drive the rapping auxiliary shaft to rotate, and the rotation of the rapping auxiliary shaft drives the rapping components to rap and remove dust.

[0004] Since there are usually multiple groups of cathode assemblies, the length of the rapping main shaft is relatively long and the weight of the rapping main shaft is also relatively large. However, due to the longitudinal arrangement of the rapping main shaft, the motor shaft of the rapping motor needs to bear a large weight, thus reducing the service life of the rapping motor. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cathode rapping device for an electrostatic precipitator to solve the problem that the longitudinal arrangement of the rapping main shaft reduces the service life of the rapping motor.

[0006] To achieve the above technical objectives, a cathode rapping device for an electrostatic precipitator proposed by the utility model includes a longitudinally arranged main shaft, a transversely arranged auxiliary shaft, and a motor connected above the main shaft. The rapping components are installed at intervals on the auxiliary shaft. The motor drives the main shaft to rotate, and the rotation of the main shaft drives the auxiliary shaft to rotate, thereby driving the rapping components to move. The rapping components move to rap the cathode assembly of the electrostatic precipitator to remove dust. It also includes a support member fixedly connected to the frame of the electrostatic precipitator. The support member supports the end of the main shaft away from the motor. There is a lubrication groove on the support member, and lubricating grease is provided in the lubrication groove. The main shaft rotates and fits in the lubrication groove.

[0007] Preferably, the support member includes a fixing part and a support part. The fixing part is fixed to the frame, the lubrication groove is provided on the support part, and the support part is detachably connected to the fixing part.

[0008] Preferably, the support part is detachably connected to the side of the fixing part.

[0009] Preferably, an activity sleeve is further provided between the motor shaft of the motor and the main shaft. The activity sleeve includes a sleeve body and a locking member provided on the side surface of the sleeve body. The activity sleeve is slidably sleeved on the motor shaft, and the locking member locks the activity sleeve on the motor shaft. The support portion is sleeved above the fixed portion.

[0010] Preferably, the hardness of the main shaft is greater than that of the support member.

[0011] Preferably, a plurality of rolling bodies are provided in the lubricating groove, and the rolling bodies are supported between the main shaft and the bottom of the lubricating groove.

[0012] Preferably, a convex surface protruding towards the main shaft is formed on the bottom of the lubricating groove, and a concave surface is correspondingly provided on the main shaft. The convex surface is rotationally matched with the concave surface; or,

[0013] A concave surface is formed on the bottom of the lubricating groove, and a convex surface protruding towards the bottom of the groove is provided on the main shaft. The convex surface is rotationally matched with the concave surface.

[0014] Preferably, a bearing or a bushing is further provided at one end of the frame away from the motor, and the main shaft is rotationally matched with the inner ring hole of the bearing or the bushing.

[0015] Preferably, the main shaft is connected by a plurality of main shaft rods, and two adjacent main shaft rods are connected by a first coupling;

[0016] The auxiliary shaft is connected by a plurality of auxiliary shaft rods, and two adjacent auxiliary shaft rods are connected by a second coupling.

[0017] The present utility model further provides an electrostatic precipitator, including a frame and a cathode assembly installed on the frame. A plurality of cathode wires are horizontally spaced on the cathode assembly. The electrostatic precipitator further includes the cathode rapping device according to any one of the above technical solutions. The auxiliary shaft is correspondingly arranged with the cathode assembly, the rapping assembly corresponds to the position of the cathode wire, and the motor, the main shaft, the auxiliary shaft and the support member are installed on the frame.

[0018] After adopting the above technical solutions, the present utility model has the following beneficial effects.

[0019] 1. For the cathode rapping device of the electrostatic precipitator provided by the present utility model, a support member is provided at one end of the main shaft away from the motor, and a lubricating groove rotationally matched with the main shaft is provided on the support member. In this way, the weight of the main shaft is borne by the support member, thereby reducing the bearing pressure of the motor above the main shaft, reducing the load during the operation of the motor, and improving the service life of the motor; at the same time, since lubricating grease is provided in the lubricating groove, the friction between the main shaft and the support member is reduced, thereby reducing the wear of both, and improving the service life of the cathode rapping device.

[0020] 2. With such a setting, since the support member is set as a split fixing part and a support part, on the one hand, it is convenient to replace the support member after severe wear, improving the service life of the cathode rapping device. On the other hand, only the support part needs to be replaced during replacement, reducing the replacement cost.

[0021] 3. The support part is arranged on the side of the fixing part. When the support part needs to be disassembled, the support part can be removed after loosening the fixing bolt. The installation and disassembly of the support part are more convenient, and the operation of the operator is easier.

[0022] 4. The motor is connected by a movable sleeve to the main shaft in a transmission manner, and the support part is sleeved above the fixing part. With such a setting, on the one hand, the unlockable movable sleeve can provide a margin for the up and down movement of the main shaft when replacing the support part, thus facilitating the installation and disassembly of the support part. On the other hand, the up and down arrangement of the support part and the fixing part eliminates the cantilever structure formed between the support part and the fixing part due to the support part being arranged on the side of the fixing part, thereby improving the service life of the support part and the fixing part.

[0023] 5. Since the support member is relatively easier to replace compared to the main shaft, the hardness of the main shaft is set to be greater than that of the support member. In this way, the wear of the main shaft can be further reduced, and the service life of the main shaft can be improved.

[0024] 6. A number of rolling bodies are provided in the lubrication groove, and the rolling bodies are supported between the main shaft and the bottom of the lubrication groove. With such a setting, the friction between the main shaft and the bottom of the lubrication groove is reduced, thereby reducing the wear of the main shaft and the lubrication groove, and further improving the service life of the support member and the main shaft.

[0025] 7. A convex surface and a concave surface are formed between the main shaft and the lubrication groove. On the one hand, the mating area between the main shaft and the bottom of the lubrication groove is increased, thereby improving the wear resistance of the main shaft and the bottom of the lubrication groove, and thus improving the service life of the support member. On the other hand, the mating of the concave surface and the convex surface is actually a line contact between the two, which can reduce the friction between the main shaft and the bottom of the lubrication groove, and further improve the service life of the support member and the main shaft. Finally, the mating of the convex surface and the concave surface is easy to retain and distribute lubricating grease between the two, thereby further reducing the friction between the main shaft and the bottom of the lubrication groove.

[0026] 8. By providing bearings or bushings on the frame, the stability of the rotation of the main shaft is improved, the swaying during the rotation of the end of the main shaft is reduced or eliminated, thereby reducing the friction and wear between the support member and the main shaft, and further improving the service life of the support member and the main shaft.

[0027] 9. An overly long main shaft and auxiliary shaft will cause the processing difficulty and manufacturing cost to increase exponentially. By setting the main shaft and auxiliary shaft in multiple segments and connecting them through a coupling, the processing difficulty and manufacturing cost of the main shaft and auxiliary shaft are reduced.

[0028] 10. The present utility model also proposes an electrostatic precipitator. Since the electrostatic precipitator adopts the cathode rapping device of any of the above technical solutions, the electrostatic precipitator has all the above technical effects.

[0029] These features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. Description of the Drawings

[0030] Figure 1 It is a layout schematic diagram of the cathode rapping device in an embodiment of the present utility model;

[0031] Figure 2 It is a schematic diagram of the position of the motor of the cathode rapping device in an embodiment of the present utility model;

[0032] Figure 3 It is a schematic diagram of the lower side of the cathode rapping device in an embodiment of the present utility model;

[0033] Figure 4 It is a schematic diagram of the cooperation between the support member and the main shaft in an embodiment of the present utility model;

[0034] Figure 5 It is another schematic diagram of the cooperation between the support member and the main shaft in an embodiment of the present utility model;

[0035] Figure 6 It is another schematic diagram of the cooperation between the support member and the main shaft in an embodiment of the present utility model;

[0036] Figure 7 It is a schematic diagram of the transmission mechanism between the main shaft and the auxiliary shaft in an embodiment of the present utility model;

[0037] Reference Signs:

[0038] 100. Motor, 101. Motor shaft, 110. Electric porcelain rotating shaft, 120. Movable sleeve, 121. Sleeve body, 122. Locking member;

[0039] 200. Main shaft, 201. Concave surface, 210. Main shaft rod, 220. First coupling;

[0040] 300. Auxiliary shaft, 310. Auxiliary shaft rod, 320. Second coupling;

[0041] 400. Rapping assembly;

[0042] 500. Support member, 510. Fixed part, 520. Support part, 521. Lubrication groove, 522. Rolling element, 523. Convex surface, 524. Limit groove;

[0043] 600. Frame, 610. Bracket, 620. Bush holder, 630. Bush;

[0044] 700. Transmission component, 710. Driving part, 711. Driving disk, 712. Transmission pin, 720. Driven part, 721. Driven disk, 722. Driven pin. Detailed implementation manner

[0045] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0046] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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 cannot be understood as a limitation to the present utility model.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" and "several" is two or more, unless otherwise clearly defined.

[0048] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0049] Such as Figures 1 to 7As shown, a cathode rapping device of an electrostatic precipitator equipment proposed in an embodiment of the utility model includes a longitudinally arranged main shaft 200, a transversely arranged secondary shaft 300 and a motor 100 arranged at the upper end of the main shaft 200, and rapping components 400 are installed on the secondary shaft 300 at intervals. The motor 100 drives the main shaft 200 to rotate, and the rotation of the main shaft 200 drives the secondary shaft 300 to rotate, thereby driving the rapping component 400 to move, and the rapping component 400 moves to rap the cathode component of the electrostatic precipitator equipment to remove dust.

[0050] In this embodiment, the cathode rapping device also includes a support member 500 fixedly connected to the frame 600 of the electrostatic precipitator equipment. The support member 500 is supported on the end of the main shaft 200 facing away from the motor 100. A lubrication groove 521 is provided on the support member 500, and grease is provided in the lubrication groove 521. The main shaft 200 rotates and fits in the lubrication groove 521.

[0051] In this embodiment, an opening is provided at the upper end of the lubrication groove 521 , and the end of the spindle 200 away from the motor 100 extends into the lubrication groove 521 and the end of the spindle 200 rotates with the bottom of the lubrication groove 521 through grease.

[0052] In this embodiment, a support is welded to the frame 600 , and the bottom of the support member 500 is fixedly connected to the support. The fixed connection can be a bolt connection or a welding method.

[0053] In some other embodiments, the support member 500 may also be directly fixedly connected to the frame 600 .

[0054] A support member 500 is provided at the end of the main shaft 200 away from the motor 100, and a lubrication groove 521 is provided on the support member 500 for rotating with the main shaft 200. In this way, the weight of the main shaft 200 is borne by the support member 500, thereby reducing the load-bearing pressure of the motor 100 above the main shaft 200, reducing the load of the motor 100 during operation, and improving the service life of the motor 100; at the same time, since grease is provided in the lubrication groove 521, the friction between the main shaft 200 and the support member 500 is reduced, thereby reducing the wear of both and improving the service life of the cathode rapping device.

[0055] The rapping assembly 400 in this embodiment can be referenced with Chinese Utility Model Patent Publication No. CN202162076U. The rapping assembly 400 includes a rapping hammer handle, a rapping hammer arm, and a rapping hammer head. The rapping hammer handle is fixedly connected to the secondary shaft, and the rotation of the secondary shaft drives the rapping hammer handle to rotate. The rapping hammer arm is hinged to the rapping hammer handle, and the rotation of the rapping hammer handle drives the rapping hammer arm to rotate about the secondary shaft, and the rapping hammer head moves accordingly. When the rapping hammer handle rotates to a certain position, the rapping hammer head falls, and the rapping hammer arm guides the direction of the rapping hammer head's fall, thereby completing the rapping.

[0056] In this embodiment, the cathode rapping device further includes an electro-ceramic rotating shaft 110. The motor shaft 101 of the motor 100 is connected to the main shaft 200 through the electro-ceramic rotating shaft 110. The electro-ceramic rotating shaft 110 plays a dual role of transmission and insulation.

[0057] In this embodiment, as Figure 7 shown, the main shaft 200 and the auxiliary shaft 300 are in right-angle transmission through a transmission mechanism 700. The transmission mechanism 700 includes a driving part 710 and a driven part 720. The driving part 710 includes a driving disk 711 that rotates with the main shaft 200 and a plurality of transmission pins 712 circumferentially provided on the driving disk 711. The driven part 720 includes a driven disk 721 that drives the auxiliary shaft 300 to rotate and a plurality of driven pins 722 circumferentially provided on the driven disk 721. A plurality of transmission pins 712 and a plurality of driven pins 722 are rotationally engaged. The included angle between the transmission pins 712 and the driven pins 722 is a right angle. The transmission pins 712 are located between two adjacent driven pins 722, and the driven pins 722 are located between two adjacent transmission pins 712. Thus, the rotation of the driving part 710 drives the rotation of the driven part 720.

[0058] Since there are no high requirements for the transmission accuracy and stability between the main shaft 200 and the auxiliary shaft 300 of the cathode rapping device, a driving disk 711 plus a plurality of transmission pins 712 are used in cooperation with a driven disk 721 plus a plurality of driven pins 722 to achieve the transmission between the main shaft 200 and the auxiliary shaft 300. The production cost of the transmission mechanism 700 is low, and the structure is reliable and durable.

[0059] In some other embodiments, the main shaft 200 and the auxiliary shaft 300 can also be in transmission through a pair of meshing bevel gears, so as to achieve the right-angle transmission between the main shaft 200 and the auxiliary shaft 300.

[0060] The right-angle transmission between the main shaft 200 and the auxiliary shaft 300 can set the main shaft 200 at the end of the auxiliary shaft 300, and the right-angle setting of the two can save space and reduce the volume of the cathode rapping device and the electrostatic precipitator equipment.

[0061] In order to reduce the friction between the main shaft 200 and the bottom of the lubricating groove 521, as Figure 4 shown, in one embodiment, a plurality of rolling elements 522 are provided in the lubricating groove 521. The rolling elements 522 are supported between the main shaft 200 and the bottom of the lubricating groove 521.

[0062] Among them, the rolling elements 522 can be ball bearings or needle rollers. The rolling elements 522 are evenly laid on the bottom of the lubricating groove 521, so as to provide a supporting force and reduce friction in the rotational fit between the main shaft 200 and the lubricating groove 521. During the rotation of the main shaft 200, it contacts and rubs against the rolling elements 522 to drive their rolling. Since there is lubricating grease in the lubricating groove 521, the rolling of the rolling elements 522 makes their surfaces covered with lubricating grease, which can further improve the effect of reducing friction.

[0063] With the above settings, the friction between the main shaft 200 and the bottom of the lubricating groove 521 is reduced, thereby reducing the wear of the main shaft 200 and the lubricating groove 521, and further improving the service life of the support member 500 and the main shaft 200.

[0064] In order to reduce the friction between the main shaft 200 and the bottom of the lubricating groove 521, as Figure 5 shown, in another embodiment, a convex surface 523 protruding toward the main shaft 200 is formed on the bottom of the lubricating groove 521, and a concave surface 201 is correspondingly provided on the main shaft 200, and the convex surface 523 is rotationally engaged with the concave surface 201.

[0065] In another embodiment, as Figure 6 shown, a concave surface is formed on the bottom of the lubricating groove 521, and a convex surface protruding toward the bottom of the groove is provided on the main shaft 200, and the convex surface is rotationally engaged with the concave surface.

[0066] Wherein, at least a part of the convex surface extends into the concave surface, and there is a space for accommodating grease between the convex surface and the concave surface. When the main shaft 200 rotates relative to the lubricating groove 521, the cooperation between the convex surface and the concave surface, on the one hand, increases the mating area between the main shaft 200 and the bottom of the lubricating groove 521, thereby improving the wear resistance of the bottom of the main shaft 200 and the lubricating groove 521, and thus improving the service life of the support member 500. On the other hand, the cooperation between the concave surface and the convex surface is actually a line contact, so that the friction between the main shaft 200 and the bottom of the lubricating groove 521 can be reduced, and further improve the service life of the support member 500 and the main shaft 200; finally, the cooperation between the convex surface and the concave surface is just easy to retain and distribute grease between the two, thereby further reducing the friction between the main shaft 200 and the bottom of the lubricating groove 521.

[0067] In order to facilitate the replacement of the support member 500, as Figures 1 to 3 shown, in one embodiment, the support member 500 includes a fixing portion 510 and a support portion 520. One end of the fixing portion 510 is fixed to the support, and the lubricating groove 521 is provided on the support portion 520, and the fixing portion 510 and the support portion 520 are detachably connected.

[0068] With such a setting, since the support member 500 is provided as a split fixing portion 510 and support portion 520, on the one hand, it is convenient to replace the support member 500 after severe wear, improving the service life of the cathode rapping device. On the other hand, only the support portion 520 needs to be replaced during replacement, reducing the replacement cost.

[0069] This embodiment explains the detachable connection between the fixing portion 510 and the support portion 520. In one embodiment, the support portion 520 is provided on the side of the fixing portion 510, and the support portion 520 and the fixing portion 510 are detachably fixed by a transverse bolt.

[0070] The transversely arranged bolts are located below the lubrication groove 521, and the bolts pass through the support portion 520 and are connected to the fixing portion 510. When the support portion 520 needs to be disassembled, the support portion 520 can be disassembled by loosening the fixing bolts.

[0071] With this arrangement, the support portion 520 can be installed and removed more conveniently, and the operation by the operator can be performed more easily.

[0072] This embodiment explains that the fixing portion 510 and the supporting portion 520 are detachably connected. Figures 1 to 3 As shown, in one embodiment, a movable sleeve 120 is further provided between the motor shaft 101 of the motor 100 and the main shaft 200 , and the support portion 520 is sleeved on the fixing portion 510 .

[0073] In this embodiment, the upper end of the movable sleeve 120 is connected to the motor shaft 101, and the lower end is connected to the insulator shaft 110. The insulator shaft 110 is connected to the main shaft 200, thereby realizing the transmission between the motor 100 and the main shaft 200. The movable sleeve 120 includes a sleeve body 121 and a locking member 122 disposed on the side of the sleeve body 121. The sleeve body 121 is slidably mounted on the motor shaft 101, and the locking member 122 locks the movable sleeve 120 to the motor shaft 101. When the locking member 122 is unlocked, the movable sleeve 120 can slide relative to the motor shaft 101.

[0074] The locking member 122 is a bolt, and a screw hole for threaded connection with the locking member 122 is provided on the side surface of the movable sleeve 120 .

[0075] In this embodiment, a limiting groove 524 is provided at the bottom of the support portion 520, and the support portion 520 is sleeved over the fixing portion 510 through the limiting groove 524. The fixing portion 510 may be provided with a square key or a flat portion, and the limiting groove 524 matches the shape of the fixing portion 510, and the support portion 520 and the fixing portion 510 are connected by the keyway.

[0076] When disassembling the support portion 520, first unlock the movable sleeve 120 so that the main shaft 200 has a margin for moving up and down, and then push the main shaft 200 upward to remove and replace the support portion 520. After the support portion 520 is replaced, lock the movable sleeve 120.

[0077] In some other embodiments, the limiting groove 524 may also be slightly larger than the fixed part 510, and the support part 520 and the fixed part 510 can be rotatably matched. Since there is grease in the lubrication groove 521, the friction between the main shaft 200 and the support part 520 is smaller than the friction between the support part 520 and the fixed part 510. Therefore, the rotation of the main shaft 200 will not or will hardly drive the support part 520 to rotate relative to the fixed part 510, so there is no need to consider the wear caused by the rotation of the support part 520 relative to the fixed part 510.

[0078] With such a setting, on the one hand, the unlockability of the movable sleeve 120 can provide a margin for the up-and-down movement of the main shaft 200 when the support part 520 needs to be replaced, facilitating the installation and disassembly of the support part 520. On the other hand, the up-and-down arrangement of the support part 520 and the fixed part 510 eliminates the cantilever structure formed between the support part 520 and the fixed part 510 due to the support part 520 being provided on the side of the fixed part 510, thereby increasing the service life of the support part 520 and the fixed part 510.

[0079] In one embodiment, to reduce the wear of the main shaft 200, the hardness of the main shaft 200 is set to be greater than that of the support member 500.

[0080] Since the support member 500 is relatively easier to replace compared to the main shaft 200, setting the hardness of the main shaft 200 to be greater than that of the support member 500 can further reduce the wear of the main shaft 200 and increase its service life.

[0081] To reduce the wobbling of the main shaft 200 and improve the rotational stability of the main shaft 200, as Figure 3 shown, in one embodiment, a bushing 630 is further provided at one end of the frame 600 away from the motor 100. A bushing holder 620 is provided on the frame 600, and the bushing 630 is installed on the bushing holder 620. The main shaft 200 is rotationally fitted in the inner ring hole of the bushing 630.

[0082] In some other embodiments, bearings are used to replace the bushing 630.

[0083] By providing a bearing or a bushing 630 on the frame 600, the rotational stability of the main shaft 200 is improved, and the wobbling during the rotation of the end of the main shaft 200 is reduced or eliminated, thereby reducing the frictional force and wear between the support member 500 and the main shaft 200, and further increasing the service life of the support member 500 and the main shaft 200.

[0084] In one embodiment, as Figure 1 shown, the main shaft 200 is formed by connecting multiple main shaft rods 210, and two adjacent main shaft rods 210 are connected by a first coupling 220; the auxiliary shaft 300 is formed by connecting multiple auxiliary shaft rods 310, and two adjacent auxiliary shaft rods 310 are connected by a second coupling 320.

[0085] An overly long main shaft 200 and auxiliary shaft 300 will cause the processing difficulty and manufacturing cost to increase exponentially. By setting the main shaft 200 and the auxiliary shaft 300 into multiple segments and connecting them with couplings, the processing difficulty and manufacturing cost of the main shaft 200 and the auxiliary shaft 300 are reduced.

[0086] In this embodiment, the first coupling 220 is a sleeve. Two adjacent main spindle rods 210 are connected through the sleeve, and after the concentricity is adjusted, the two adjacent main spindle rods 210 and the sleeve are welded to be fixed.

[0087] In this embodiment, the second coupling 320 is a sleeve. Two adjacent auxiliary spindle rods 310 are connected through the sleeve, and after the concentricity is adjusted, the two adjacent auxiliary spindle rods 310 and the sleeve are welded to be fixed.

[0088] The present utility model further provides an electrostatic precipitator, which includes a frame 600 and a cathode assembly mounted on the frame 600. A plurality of cathode wires are longitudinally spaced on the cathode assembly. The electrostatic precipitator further includes the cathode rapping device according to any one of the technical solutions in all the foregoing embodiments. The auxiliary shaft 300 of the cathode rapping device is arranged corresponding to the cathode assembly, and the rapping assembly 400 is in a position corresponding to the cathode wires. The motor 100, the main shaft 200, the auxiliary shaft 300 and the limiting member are mounted on the frame 600.

[0089] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that the present utility model includes but is not limited to the content described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present utility model will be included in the scope of the claims.

Claims

1. A cathode rapping device for an electrostatic precipitator, comprising a longitudinally arranged main shaft, a transversely arranged secondary shaft, and a motor connected to the main shaft, wherein rapping assemblies are installed on the secondary shaft at intervals, the motor drives the main shaft to rotate, the rotation of the main shaft drives the secondary shaft to rotate, thereby driving the rapping assembly to move, and the rapping assembly moves to rap the cathode assembly of the electrostatic precipitator to remove dust, characterized in that It also includes a support member fixedly connected to the frame of the electrostatic precipitator equipment, the support member is supported on the end of the main shaft away from the motor, a lubrication groove is provided on the support member, grease is provided in the lubrication groove, and the main shaft rotates in the lubrication groove.

2. The cathode rapping device of an electrostatic precipitator according to claim 1, wherein: The support member includes a fixing portion and a supporting portion, the fixing portion is fixed to the frame, the lubrication groove is provided on the supporting portion, and the supporting portion is detachably connected to the fixing portion.

3. The cathode rapping device of the electrostatic precipitator according to claim 2, characterized in that: The supporting portion is detachably connected to a side surface of the fixing portion.

4. The cathode rapping device of the electrostatic precipitator according to claim 2, characterized in that: A movable sleeve is further provided between the motor shaft and the main shaft of the motor. The movable sleeve includes a sleeve body and a locking piece provided on the side of the sleeve body. The movable sleeve can be slidably sleeved on the motor shaft. The locking piece locks the movable sleeve on the motor shaft. The supporting part is sleeved on top of the fixed part.

5. The cathode rapping device of the electrostatic precipitator according to claim 1, characterized in that: The hardness of the main shaft is greater than the hardness of the support member.

6. The cathode rapping device of the electrostatic precipitator according to claim 1, characterized in that: A plurality of rolling bodies are provided in the lubrication groove, and the rolling bodies are supported between the main shaft and the bottom of the lubrication groove.

7. The cathode rapping device of the electrostatic precipitator according to claim 1, characterized in that: The bottom of the lubrication groove is formed with a convex surface protruding toward the main shaft, and the main shaft is correspondingly provided with a concave surface, and the convex surface and the concave surface are rotatably engaged; or, The bottom of the lubrication groove forms an inwardly concave surface, and the main shaft forms a convex surface protruding toward the bottom of the groove, and the convex surface is rotatably matched with the concave surface.

8. The cathode rapping device of the electrostatic precipitator according to claim 1, characterized in that: A bearing or a shaft sleeve is further provided at one end of the frame away from the motor, and the main shaft is rotatably fitted in the inner ring hole of the bearing or the shaft sleeve.

9. The cathode rapping device of the electrostatic precipitator according to claim 1, characterized in that: The main shaft is formed by connecting a plurality of main shaft rods, and two adjacent main shaft rods are connected by a first coupling; The secondary shaft is formed by connecting a plurality of secondary shaft rods, and two adjacent secondary shaft rods are connected via a second coupling.

10. Electrostatic precipitator equipment, characterized in that: It includes a frame and a cathode assembly installed on the frame, and a plurality of cathode wires are arranged on the cathode assembly at laterally intervals. The electrostatic precipitator equipment also includes a cathode rapping device as described in any one of claims 1 to 9, the secondary shaft is arranged corresponding to the cathode assembly, the rapping assembly corresponds to the position of the cathode wire, and the motor, the main shaft, the secondary shaft and the support are installed on the frame.

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