Electric dust remover

Abstract

The utility model discloses an electric dust remover, and belongs to the technical field of dust removal equipment. In the electric dust remover, a plurality of discharge electrode frames are generally fixedly connected to two discharge electrode suspension beams which are arranged side by side, the two discharge electrode suspension beams are suspended through a plurality of discharge electrode suspension rods, and the end parts of the discharge electrode suspension rods are suspended in an insulator supporting assembly fixed at the top of an external frame. Therefore, the load of the discharge electrode system is transferred to the external frame, the suspension device of the discharge electrode system is convenient to support, the steel consumption borne by the wall board of the dust remover body can be greatly reduced, and the cost is saved. In addition, the discharge electrode suspension rod, the discharge electrode suspension beam and the discharge electrode frame are sequentially distributed, so that the occupied space of the electric dust remover body can be reduced to the maximum extent.

Description

Technical Field

[0001] This application relates to the field of dust removal equipment technology, and in particular to an electrostatic precipitator. Background Technology

[0002] The internal structure of an electrostatic precipitator is mainly divided into a discharge electrode system and a collection electrode system. Within the discharge electrode system, numerous discharge electrode frames are suspended within the equipment. The collection electrode and discharge electrode are also referred to as the anode and cathode, and the rest of the system operates around them.

[0003] However, the suspension device for the discharge electrode system in current vertical electrostatic precipitators is quite difficult to support. Utility Model Content

[0004] This application provides an electrostatic precipitator. It solves the problem of difficult support for the suspension device of the discharge electrode system in the prior art. The technical solution is as follows:

[0005] On one hand, an electrostatic precipitator is provided, the electrostatic precipitator comprising:

[0006] External frame, multiple insulator support assemblies, multiple discharge electrode suspension rods, two discharge electrode suspension beams, and multiple discharge electrode frames;

[0007] The plurality of insulator support assemblies are all fixed to the top of the outer frame, and the plurality of insulator support assemblies are divided into two rows arranged opposite each other along the first direction. Each row of insulator support assemblies includes a plurality of insulator support assemblies arranged along the second direction, and the first direction is perpendicular to the second direction.

[0008] The plurality of discharge electrode suspension rods correspond one-to-one with the plurality of insulator support assemblies, and the first end of each discharge electrode suspension rod is suspended in the corresponding insulator support assembly;

[0009] The two discharge electrode suspension beams are respectively arranged corresponding to the two rows of discharge electrode suspension rods, and each discharge electrode suspension beam is suspended at the second end of the corresponding row of discharge electrode suspension rods;

[0010] The plurality of discharge electrode frames are distributed on the side of the discharge electrode suspension beam away from the insulator support assembly, and the plurality of discharge electrode frames are all fastened to the two discharge electrode suspension beams.

[0011] Optionally, the top of the outer frame has a support beam, and the bottom of the plurality of insulator support assemblies is fixed to the first side of the support beam; the two discharge electrode suspension beams and the plurality of discharge electrode frames are all distributed on the second side of the support beam.

[0012] The first and second sides of the support beam are arranged along a third direction, which is perpendicular to both the first and second directions.

[0013] Optionally, the discharge electrode suspension beam has a connecting hole;

[0014] The electrostatic precipitator includes: strip support tubes and limiting fasteners, both located on the side of the discharge electrode suspension beam away from the insulator support assembly. The strip support tubes extend along a second direction and have connecting holes. The second end of the discharge electrode suspension rod passes through the connecting hole and the connecting hole in sequence and is fixedly connected to the connecting hole. The limiting fasteners are fixed on the discharge electrode suspension beam and are used to limit the strip support tubes between the discharge electrode suspension beam and the limiting fasteners.

[0015] Optionally, the limiting and fixing component includes: two bent support plates arranged opposite each other along the first direction, and at least two fastening screws arranged opposite each other along the second direction, with the strip support tube located between the two bent support plates; the two bent support plates have at least two sets of first connecting holes, each set of first connecting holes including two interconnected first connecting holes; at least the two fastening screws correspond one-to-one with at least two sets of first connecting holes;

[0016] Each of the fastening screws is fastened to a corresponding set of first connecting holes, and the fastening screws are distributed on the side of the strip support tube away from the discharge electrode suspension beam.

[0017] Optionally, the electrostatic precipitator further includes two cross-arranged stabilizing rods distributed between the two discharge electrode suspension beams, with each stabilizing rod having its two ends fastened to the sides of the two discharge electrode suspension beams respectively.

[0018] Optionally, each of the discharge electrode frames has at least two suspension auxiliary rods on the side facing the discharge electrode suspension beam, and the discharge electrode suspension beam has at least two sets of ear plates on the side facing the discharge electrode frame, each set of ear plates including two ear plates arranged opposite each other; the end of each suspension auxiliary rod away from the discharge electrode frame extends into the space between two ear plates in the corresponding set of ear plates and is fixedly connected to the ear plates.

[0019] Optionally, two ear plates in each set of ear plates have two first limiting holes that communicate with each other, and the end of the suspension auxiliary rod has a second limiting hole that communicates with the first limiting holes;

[0020] The electrostatic precipitator includes a positioning pin, which passes through the first limiting hole and the second limiting hole.

[0021] Optionally, the electrostatic precipitator further includes: an electrostatic precipitator housing, a flue gas inlet component, a first dustproof sleeve, and a second dustproof sleeve. The flue gas inlet component is fixed to the electrostatic precipitator housing, and the side of the flue gas inlet component has a fixing hole. The first dustproof sleeve and the second dustproof sleeve are arranged along a third direction. One end of the first dustproof sleeve is fixed to the bottom of the insulator support assembly. One end of the second dustproof sleeve is sleeved on the other end of the first dustproof sleeve. The other end of the second dustproof sleeve extends into the flue gas inlet component through the fixing hole, and the side of the second dustproof sleeve is fixedly connected to the side wall of the fixing hole.

[0022] The portion of the discharge electrode suspension rod is inserted inside the first dustproof sleeve and the second dustproof sleeve.

[0023] Optionally, the electrostatic precipitator further includes an annular seal fixed between one end of the second dustproof sleeve and the other end of the first dustproof sleeve.

[0024] Optionally, the electrostatic precipitator further includes a grounding wire, the two ends of which are fixedly connected to the outer side of the first dustproof sleeve and the outer side of the second dustproof sleeve, respectively.

[0025] The beneficial effects of the technical solutions provided in this application include at least the following:

[0026] In electrostatic precipitators, multiple discharge electrode frames are typically fixedly connected to two parallel discharge electrode suspension beams. These beams are suspended by multiple discharge electrode suspension rods, the ends of which are suspended within insulator support assemblies fixed to the top of the external frame. This transfers the load of the discharge electrode system to the external frame, facilitating support of the suspension system and significantly reducing steel consumption in the precipitator's wall panels, thus saving costs. Furthermore, the sequential distribution of the discharge electrode suspension rods, beams, and frames minimizes the footprint of the electrostatic precipitator. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a partial structural schematic diagram of an electrostatic precipitator provided in an embodiment of this application;

[0029] Figure 2This is a partial structural schematic diagram of another electrostatic precipitator provided in an embodiment of this application;

[0030] Figure 3 This is a side view of a partial structure of an electrostatic precipitator provided in an embodiment of this application;

[0031] Figure 4 This is a top view of a partial structure of an electrostatic precipitator provided in an embodiment of this application;

[0032] Figure 5 This is a side view of another part of the structure of an electrostatic precipitator provided in an embodiment of this application;

[0033] Figure 6 yes Figure 2 A magnified view of a portion at point A.

[0034] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0038] Please refer to Figure 1 , Figure 1 This is a partial structural schematic diagram of an electrostatic precipitator provided in an embodiment of this application. The electrostatic precipitator may include: an outer frame 100, multiple insulator support assemblies 200, multiple discharge electrode suspension rods 300, two discharge electrode suspension beams 400, and multiple discharge electrode frames 500.

[0039] Multiple insulator support assemblies 200 in the electrostatic precipitator can be fixed to the top of the outer frame 100, and the multiple insulator support assemblies 200 can be divided into two opposing rows along the first direction f1. Each row of insulator support assemblies 200 can contain multiple insulator support assemblies 200 arranged along the second direction f2. Here, the first direction f1 can be perpendicular to the second direction f2.

[0040] In an electrostatic precipitator, multiple discharge electrode suspension rods 300 can correspond one-to-one with multiple insulator support assemblies 200, and the first end of each discharge electrode suspension rod 300 can be suspended within the corresponding insulator support assembly 200. For example, the first end of the discharge electrode suspension rod 300 can be suspended from a cover plate (not shown in the figure) in the insulator support assembly 200.

[0041] The two discharge electrode suspension beams 400 in the electrostatic precipitator can be respectively set to correspond to the two discharge electrode suspension rods 300, and each discharge electrode suspension beam 400 is suspended at the second end of the corresponding discharge electrode suspension rod 300.

[0042] Multiple discharge electrode frames 500 in the electrostatic precipitator can be distributed on the side of the discharge electrode suspension beam 400 away from the insulator support assembly 200, and each discharge electrode frame 500 can be fastened to two discharge electrode suspension beams 400.

[0043] In this embodiment, multiple discharge electrode frames 500 are typically fixedly connected to two discharge electrode suspension beams 400 arranged side-by-side in the electrostatic precipitator. The two discharge electrode suspension beams 400 are suspended by multiple discharge electrode suspension rods 300, and the ends of the discharge electrode suspension rods 300 are suspended within an insulator support assembly 200 fixed to the top of the outer frame 100. This allows the load of the discharge electrode system to be transferred to the outer frame 100, facilitating support of the discharge electrode system's suspension device while significantly reducing steel consumption in the precipitator body's wall panels, thus saving costs. Furthermore, the sequential distribution of the discharge electrode suspension rods 300, discharge electrode suspension beams 400, and discharge electrode frames 500 minimizes the footprint of the electrostatic precipitator body.

[0044] In summary, this application provides an electrostatic precipitator, which may include: an external frame, multiple insulator support assemblies, multiple discharge electrode suspension rods, two discharge electrode suspension beams, and multiple discharge electrode frames. In the electrostatic precipitator, multiple discharge electrode frames are typically fixedly connected to two discharge electrode suspension beams arranged side-by-side. The two discharge electrode suspension beams are suspended by multiple discharge electrode suspension rods, and the ends of the discharge electrode suspension rods are suspended within insulator support assemblies fixed to the top of the external frame. This transfers the load of the discharge electrode system to the external frame, facilitating support of the discharge electrode system's suspension device while significantly reducing steel consumption in the precipitator body's wall panels, thus saving costs. Furthermore, the sequential distribution of the discharge electrode suspension rods, discharge electrode suspension beams, and discharge electrode frames minimizes the footprint of the electrostatic precipitator body.

[0045] Optional, please refer to Figure 2 , Figure 2 This is a partial structural diagram of another electrostatic precipitator provided in this application embodiment. The top of the outer frame 100 may have a support beam 101, and the bottom of multiple insulator support assemblies 200 may be fixed to the first side of the support beam 101. Two discharge electrode suspension beams 400 and multiple discharge electrode frames 500 may be distributed on the second side of the support beam 101. The first and second sides of the support beam 101 may be arranged along a third direction f3, which may be perpendicular to the first direction f1 and the second direction f2. Thus, by using the support beam 101 in the outer frame 100 as a support structure, it is convenient for operators to perform maintenance on the insulator support assemblies 200 and to suspend the discharge electrode suspension rods 300. For example, the outer frame 100 may be a steel frame.

[0046] In the embodiments of this application, please refer to Figure 2 , Figure 3 and Figure 4 , Figure 3 This is a side view of a partial structure of an electrostatic precipitator provided in an embodiment of this application. Figure 4This is a top view of a partial structure of an electrostatic precipitator provided in an embodiment of this application. The discharge electrode suspension beam 400 may have a connecting hole 401. The electrostatic precipitator may include: a strip support tube 600 and a limiting fixing member 700, both located on the side of the discharge electrode suspension beam 400 away from the insulator support assembly 200. The strip support tube 600 may extend along a second direction f2 and may have a connecting hole 601. The second end of the discharge electrode suspension rod 300 may pass sequentially through the connecting hole 401 in the discharge electrode suspension beam 400 and the connecting hole 601 in the strip support tube 600, and be fixedly connected to the connecting hole 601. The limiting fixing member 700 may be fixed on the discharge electrode suspension beam 400 and may be used to limit the strip support tube 600 between the discharge electrode suspension beam 400 and the limiting fixing member 700. Thus, by providing a connecting hole 401 in the discharge electrode suspension beam 400, and by providing a strip support tube 600 and a limiting and fixing member 700 on the side of the discharge electrode suspension beam 400 away from the insulator support assembly 200, the strip support tube 600 can support the discharge electrode suspension beam 400, while the limiting and fixing member 700 can limit and fix the strip support tube 600, ensuring the stable suspension of the discharge electrode suspension rod 300 on the discharge electrode suspension beam 400.

[0047] For example, such as Figure 3 As shown, the limiting and fixing component 700 in the electrostatic precipitator may include: two bent support plates 701 arranged opposite each other along a first direction f1, and at least two fastening screws 702 arranged opposite each other along a second direction f2. The strip support tube 600 is located between the two bent support plates 701. The two bent support plates 701 may have at least two sets of first connecting holes 701a, each set of first connecting holes 701a may include two interconnected first connecting holes 701a, and at least two fastening screws 702 correspond one-to-one with at least two sets of first connecting holes 701a in the two bent support plates 701. Each fastening screw 702 may be fastened to a corresponding set of first connecting holes 701a, and the fastening screws 702 may be distributed on the side of the strip support tube 600 away from the discharge electrode suspension beam 400. In this case, the strip support tube 600 is placed between the two bending support plates 701, and the fastening screw 702 is fastened to the bending support plate 701 to limit and fix the strip support tube 600.

[0048] In this application, the bending support plate 701 can be angle steel.

[0049] Optional, such as Figure 2 and Figure 4As shown, the electrostatic precipitator may further include two intersecting stabilizing rods 800 distributed between the two discharge electrode suspension beams 400, with each end of the stabilizing rod 800 being securely connected to the sides of the two discharge electrode suspension beams 400 respectively. In this case, the discharge electrode suspension beams 400 form a whole through the two stabilizing rods 800, ensuring the stability and safety of the entire discharge electrode system when flue gas passes through.

[0050] In the embodiments of this application, please refer to Figure 2 and Figure 5 , Figure 5 This is a side view of another partial structure of an electrostatic precipitator provided in an embodiment of this application. Each discharge electrode frame 500 may have at least two suspension auxiliary rods 501 on the side facing the discharge electrode suspension beam 400, and each discharge electrode suspension beam 400 may have at least two sets of ear plates 402 on the side facing the discharge electrode frame 500. Each set of ear plates 402 may include two ear plates 402 arranged opposite to each other. The end of each suspension auxiliary rod 501 facing away from the discharge electrode frame 500 may extend into the space between the two ear plates 402 in the corresponding set of ear plates and may be fixedly connected to the ear plates 402. In this case, by providing suspension auxiliary rods 501 in each discharge electrode frame 500 and providing a set of ear plates 402 corresponding to the suspension auxiliary rods 501 in the discharge electrode suspension beam 400, the fixed connection between the discharge electrode suspension beam 400 and the discharge electrode frame 500 is easily achieved through the ear plates 402 and the suspension auxiliary rods 501. It should be noted that the suspension auxiliary rod 501 and the discharge electrode suspension rod 300 are staggered on the discharge electrode suspension beam 400.

[0051] For example, the suspension auxiliary rod 501 and the ear plate 402 can be fixedly connected by welding. In this application, as... Figure 5 As shown, two ear plates in each set of ear plates 402 may have interconnected first limiting holes 402a, and the end of the suspension auxiliary rod 501 may have a second limiting hole 501a communicating with the first limiting hole 402a. The electrostatic precipitator may include a positioning pin 900, which passes through the first limiting holes 402a in the two ear plates 402 and the second limiting hole 501a in the suspension auxiliary rod 501. In this case, by providing a second limiting hole 501a at the end of the suspension auxiliary rod 501, and providing a first limiting hole 402a communicating with the second limiting hole 501a in the ear plate 402, the electrode frame 500 and the electrode suspension beam 400 are positioned during assembly of the electrode frame 500 and the electrode suspension beam 400 through the cooperation of the positioning pin 900 and the two limiting holes.

[0052] Optional, please refer to Figure 2 and Figure 6 As shown, Figure 6 yes Figure 2 A partially enlarged schematic diagram at point A. The electrostatic precipitator may further include: an electrostatic precipitator housing 1300, a flue gas inlet component 1000, a first dustproof sleeve 1100, and a second dustproof sleeve 1200. The flue gas inlet component 1000 can be fixed to the electrostatic precipitator housing 1300, and the side of the flue gas inlet component 1000 may have a fixing hole a2. The first dustproof sleeve 1100 and the second dustproof sleeve 1200 can be arranged along a third direction f3. One end of the first dustproof sleeve 1100 can be fixed to the bottom of the insulator support assembly 200, and one end of the second dustproof sleeve 1200 can be sleeved on the other end of the first dustproof sleeve 1100. The other end of the second dustproof sleeve 1200 can extend into the flue gas inlet component 1000 through the fixing hole a2, and the side of the second dustproof sleeve 1200 is fixedly connected to the side wall of the fixing hole a2 of the flue gas inlet component 1000. The discharge electrode suspension rod 300 can be partially inserted into the first dustproof sleeve 1100 and the second dustproof sleeve 1200, and the third direction f3 can be set perpendicular to both the first direction f1 and the second direction f2. This two-stage dustproof sleeve design effectively solves the problem of expansion absorption caused by the inconsistent expansion of the suspension system under high-temperature conditions. The expansion caused by high temperatures is largely prevented from being transmitted to the external frame 100 and affecting the suspension stability of the discharge electrode suspension rod 300, while simultaneously ensuring a seal and dustproof effect.

[0053] It should be noted that the aforementioned discharge electrode frame system is suspended inside the electrostatic precipitator housing. The discharge electrode frame system does not directly contact the electrostatic precipitator housing and needs to maintain a discharge distance.

[0054] In the embodiments of this application, such as Figure 6 As shown, the electrostatic precipitator may further include an annular seal 1400 fixed between one end of the second dustproof sleeve 1200 and the other end of the first dustproof sleeve 1100. This ensures a good sealing effect between the second dustproof sleeve 1200 and the first dustproof sleeve 1100 at the fitting position.

[0055] Optionally, the electrostatic precipitator may also include: a grounding wire 1500 with expansion capacity, the two ends of which can be fixedly connected to the outer side of the first dustproof sleeve 1100 and the outer side of the second dustproof sleeve 1200, respectively.

[0056] In summary, this application provides an electrostatic precipitator, which may include: an external frame, multiple insulator support assemblies, multiple discharge electrode suspension rods, two discharge electrode suspension beams, and multiple discharge electrode frames. In an electrostatic precipitator, multiple discharge electrode frames are typically fixedly connected to two discharge electrode suspension beams arranged side-by-side. The two discharge electrode suspension beams are suspended by multiple discharge electrode suspension rods, and the ends of the discharge electrode suspension rods are suspended within insulator support assemblies fixed to the top of the external frame. This transfers the load of the discharge electrode system to the external frame, significantly reducing the steel consumption of the precipitator body wall panels and saving costs. Furthermore, the sequential distribution of the discharge electrode suspension rods, discharge electrode suspension beams, and discharge electrode frames minimizes the footprint of the electrostatic precipitator body.

[0057] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0058] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An electrostatic precipitator characterized by comprising: The electric dust collector comprises an outer frame, a plurality of insulator support assemblies, a plurality of discharge electrode suspension rods, two discharge electrode suspension beams and a plurality of discharge electrode frames. The plurality of insulator support assemblies are fixed on the top of the outer frame, and the plurality of insulator support assemblies are divided into two rows arranged oppositely along a first direction, and each row of the insulator support assemblies comprises a plurality of insulator support assemblies arranged along a second direction, and the first direction is perpendicular to the second direction. The plurality of discharge electrode suspension rods correspond to the plurality of insulator support assemblies one by one, and the first end of each discharge electrode suspension rod is suspended in the corresponding insulator support assembly. The two discharge electrode suspension beams are arranged correspondingly with the two rows of discharge electrode suspension rods respectively, and each discharge electrode suspension beam is suspended at the second end of the corresponding row of discharge electrode suspension rods. The plurality of discharge electrode frames are distributed on the side of the discharge electrode suspension beam away from the insulator support assembly, and the plurality of discharge electrode frames are fixedly connected with the two discharge electrode suspension beams. The top of the outer frame has a support beam, and the bottom of the plurality of insulator support assemblies is fixed on the first side of the support beam; the two discharge electrode suspension beams and the plurality of discharge electrode frames are distributed at the second side of the support beam.

2. The electrostatic precipitator of claim 1, wherein, The first side and the second side of the support beam are arranged along a third direction, and the third direction is perpendicular to the first direction and the second direction. The discharge electrode suspension beam has a communication hole.

3. The electrostatic precipitator of claim 1, wherein, The electric dust collector comprises a strip-shaped support tube and a limiting fixing part located on the side of the discharge electrode suspension beam away from the insulator support assembly, the strip-shaped support tube is arranged along the second direction, the strip-shaped support tube has a connecting hole, the second end of the discharge electrode suspension rod passes through the communication hole and the connecting hole in sequence, and is fixedly connected with the connecting hole; the limiting fixing part is fixed on the discharge electrode suspension beam and is used for limiting the strip-shaped support tube between the discharge electrode suspension beam and the limiting fixing part. The limiting fixing part comprises two bending support plates arranged oppositely along the first direction, and at least two fastening screws arranged oppositely along the second direction, and the strip-shaped support tube is located between the two bending support plates; the two bending support plates have at least two groups of first connecting holes, and each group of the first connecting holes comprises two first connecting holes in communication with each other; at least the two fastening screws correspond to at least two groups of the first connecting holes one by one.

4. The electrostatic precipitator of claim 3, wherein, Each fastening screw is fixedly connected with a corresponding group of first connecting holes, and the fastening screws are distributed on the side of the strip-shaped support tube away from the discharge electrode suspension beam. The electric dust collector further comprises two cross-shaped stabilizing rod parts distributed between the two discharge electrode suspension beams, and the two ends of each stabilizing rod part are fixedly connected with the side surfaces of the two discharge electrode suspension beams.

5. An electrostatic precipitator according to claim 3 or 4, characterised in that, ​ 6. The electrostatic precipitator of claim 5, wherein, Each of the discharge electrode frame has at least two suspension auxiliary rods towards one side of the discharge electrode suspension beam, and the discharge electrode suspension beam has at least two groups of ears towards one side of the discharge electrode frame, each group of the ears comprises two oppositely arranged ears; the end of each of the suspension auxiliary rods away from the discharge electrode frame extends into the two ears of the corresponding group of ears and is fixedly connected with the ears.

7. The electrostatic precipitator of claim 6, wherein, The two ears in each group of the ears have two first limiting holes in communication with each other, and the end of the suspension auxiliary rod has a second limiting hole in communication with the first limiting hole; The electric dust collector further comprises a positioning pin arranged in the first limiting hole and the second limiting hole.

8. The electrostatic precipitator according to any one of claims 1 to 4, 6 to 7, characterized in that, The electric dust collector further comprises an electric dust collector shell, a flue gas inlet component, a first dustproof sleeve and a second dustproof sleeve, the flue gas inlet component is fixed on the electric dust collector shell, the flue gas inlet component has a fixed hole on the side surface, the first dustproof sleeve and the second dustproof sleeve are arranged along a third direction, one end of the first dustproof sleeve is fixed on the bottom of the insulator support assembly, the other end of the first dustproof sleeve is sleeved with the second dustproof sleeve, the other end of the second dustproof sleeve extends into the flue gas inlet component through the fixed hole, and the side surface of the second dustproof sleeve is fixedly connected with the side wall of the fixed hole. Part of the discharge electrode suspension beam is arranged in the first dustproof sleeve and the second dustproof sleeve.

9. The electrostatic precipitator of claim 8, wherein, The electric dust collector further comprises a ring-shaped sealing element fixed between one end of the second dustproof sleeve and the other end of the first dustproof sleeve.

10. The electrostatic precipitator of claim 8, wherein, The electric dust collector further comprises a grounding wire, and two ends of the grounding wire are fixedly connected with the outer side surface of the first dustproof sleeve and the outer side surface of the second dustproof sleeve respectively.

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