CN109550596A - A kind of antifouling work electrostatic precipitator - Google Patents
A kind of antifouling work electrostatic precipitator Download PDFInfo
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- CN109550596A CN109550596A CN201811458688.2A CN201811458688A CN109550596A CN 109550596 A CN109550596 A CN 109550596A CN 201811458688 A CN201811458688 A CN 201811458688A CN 109550596 A CN109550596 A CN 109550596A
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- porcelain insulator
- pedestal
- insulation barrier
- annular wind
- wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/80—Cleaning the electrodes by gas or solid particle blasting
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- Electrostatic Separation (AREA)
Abstract
The present invention relates to technical field of electrostatic dust collection, more specifically, it relates to a kind of antifouling work electrostatic precipitator, its key points of the technical solution are that: a kind of antifouling work electrostatic precipitator comprising sunpender, insulation barrier, porcelain insulator and pedestal；Insulation barrier, porcelain insulator and pedestal three set gradually from top to bottom, and sunpender sequentially passes through insulation barrier, porcelain insulator and pedestal.The upper end cone tank of pedestal.The bottom surface of cone tank is equipped with annular wind guide tank, the opening of the lower end surface of porcelain insulator circumferentially covering part annular wind guide tank；The exhaust vent through upper and lower ends is additionally provided on pedestal, exhaust vent is located at the inside of annular wind guide tank, and sunpender passes through pedestal via exhaust vent；The lower end surface of insulation barrier is equipped with annular wind deflector；Annular wind deflector is used to for the wind of air-guiding aisle being directed at the outer wall of porcelain insulator.According to the technique and scheme of the present invention, it can prevent porcelain insulator from pollution flashover occurs.
Description
Technical field
The present invention relates to technical field of electrostatic dust collection, in particular to a kind of antifouling work electrostatic precipitator.
Background technique
Electrostatic precipitator is a kind of high-effective dust-removing equipment for fine solid particle in captured gas, it is real using electrostatic force
Existing solid-state or liquid particles are separated with air-flow, thus the device for purifying ash-laden gas.When the arranged for interval inside electric precipitator
Discharge electrode and dust collector pole between apply with high voltage direct current electric forming electric field when, maintain a space for being enough to make gas ionization,
Gas around discharge electrode will be ionized to form gas ion and electronics.When dusty gas passes through electric field, ion and electricity
Son is attached to powder dust particle surface during exercise and keeps its charged, and charged particle polar motion and sinks to gathering dust under the action of electric field force
Product is on dust collector pole, to achieve the purpose that powder dust particle is separated with air-flow.When the dust layer on dust collector pole reaches certain thickness
When, fall under gravity into ash bucket.
Electrostatic precipitator porcelain insulator-electroceramics sleeve passes through close at the shell of field for corona discharge electrode hanging frame sunpender
Envelope and insulation protection.Electroceramics sleeve outer surface applies white or brown enamel, both ends of the surface grinding.
In the high-voltage electrostatic dust separator porcelain insulator of operation, by the pollution of ambient enviroment, surface can gradually deposit one
Layer dunghill.When meeting with wet environment, will form moisture film in insulator surface, in pollution layer can lava class can be soluble in water,
To form conductive moisture film, thus there is Leakage Current to flow through along the surface of insulator, and because of degree of fouling and damp degree
Difference so that the electric current and voltage's distribiuting of insulator surface are uneven, wherein dry zone undertakes higher voltage.Work as electric-field strength
When spending sufficiently large, the creeping discharge across dry area will be generated, electric discharge type may be glow discharge, spark discharge or generate local
Electric arc.Local arc is the discharge process of an interval, and the discharge condition of this interval may continue for quite a long time, when dirty
When more serious with dampness, local arc can gradually develop；When reaching and exceeding critical state, electric arc can run through the two poles of the earth,
Flashover is completed, need to stop transport maintenance, larger to normal Influence of production.
In order to avoid the generation of above-mentioned pollution flashover phenomenon, some producers devise special cleaning device in electrostatic precipitator
Porcelain insulator 20 is cleaned.As depicted in figs. 1 and 2, which includes baffle 10 and pedestal 30, and the lid of baffle 10 closes
The upper end of porcelain insulator 20, and seal and cooperate with the upper end of porcelain insulator 20, pedestal 30 is annular in shape, to form centre bore at middle part
303.Pedestal 30 is fitted in the lower end of porcelain insulator 20.Pedestal 30 has inner cavity, and the upper surface of pedestal 30 has connection inner cavity
Gas outlet 302 has the air inlet 301 of connection inner cavity on the side wall of pedestal 30.The quantity of gas outlet 302 is multiple and the bottom of around
The rounded distribution of center line of seat 30.Gas outlet 302 is opposite with the inner hole of porcelain insulator 20.Wherein it is possible to from air inlet 301 to
High pressure gas is passed through in pedestal 30, high pressure gas flows into the inner hole of porcelain insulator 20 from the gas outlet of pedestal 30 302, with exhausted to porcelain
The inner hole of edge 20 is cleaned, and is then flowed out from the centre bore 303 of pedestal 30.
Although certain cleaning action can be played to the inner hole of porcelain insulator 20 using above-mentioned cleaning device, also deposit
In the hidden danger that pollution flashover occurs.Specifically, between the two adjacent gas outlets 302 of pedestal 30 and 30 upper surface of pedestal is interior
Edge still can deposit dust, and for a long time, dust can spread to the inner surface of porcelain insulator 20, lead to the hair of pollution flashover phenomenon
It is raw.In addition, the cleaning device is only capable of cleaning the inner wall of porcelain insulator 20, the outer wall of porcelain insulator 20 cannot be carried out clear
It is clean, cause to be easy deposition dust on the outer wall of porcelain insulator 20 and there is a phenomenon where pollution flashovers.
It is solved in view of the above-mentioned problems, those skilled in the art's urgent need designs the new scheme of one kind.
Summary of the invention
In view of this, the present invention provides a kind of antifouling work electrostatic precipitator, main purpose is to solve existing electrostatic precipitation
Deposition dust is easy on the outer wall of the porcelain insulator of device and the pedestal of cleaning device leads to the technical issues of pollution flashover phenomenon occurs.
In order to achieve the above objectives, present invention generally provides following technical solutions:
The embodiment of the present invention provides a kind of antifouling work electrostatic precipitator, including sunpender, insulation barrier, porcelain insulator and pedestal；
The insulation barrier, porcelain insulator and the pedestal three set gradually from top to bottom, and the sunpender sequentially passes through institute
Insulation barrier, porcelain insulator and the pedestal are stated, the adjusting nut is threaded on the sunpender, the adjusting nut supports
It is pressed in the side away from porcelain insulator of insulation barrier；The lower end of the sunpender with cathode line for connecting；
The upper end of the pedestal is equipped with the cone tank consistent with the outer shape of the lower end of porcelain insulator, the porcelain insulator
Lower end is assemblied in the cone tank, and the lower end surface of the porcelain insulator and the bottom surface of cone tank offset, the porcelain insulator
The side wall of outer wall and the cone tank is interference fitted；
The bottom surface of the cone tank is equipped with annular wind guide tank, the center line weight of the annular wind guide tank and the porcelain insulator
It closes；The opening of the lower end surface of the porcelain insulator circumferentially covering part annular wind guide tank；The annular wind guide tank has opposite
The first side wall and second sidewall, the second sidewall be located at the inside of the first side wall, the upper end of the second sidewall is low
In the upper end of the first side wall；There is the air inlet hole for being through to the annular wind guide tank on the outer wall of the pedestal；
The exhaust vent through upper and lower ends is additionally provided on the pedestal, the exhaust vent is located at the inside of the annular wind guide tank,
The sunpender passes through the pedestal via the exhaust vent；
The lower end of the insulation barrier has pillar, and the insulation barrier passes through the upper surface of the pillar and the porcelain insulator
It offsets；The quantity of the pillar is two or more, and along the rounded distribution of the center line of the porcelain insulator；Adjacent two are convex
The air-guiding aisle for being formed between column and being connected to inside porcelain insulator；
The lower end surface of the insulation barrier is equipped with annular wind deflector；The upper end insertion of the porcelain insulator annular wind deflector
Inside, and between the two have interval；The annular wind deflector is used to for the wind of air-guiding aisle being directed at the outer wall of porcelain insulator
On；
Wherein, the pedestal is two-half structure, and respectively the first half pedestals and the second half pedestals；
One in both the first half pedestal and the second half pedestal is equipped with buckle, another is equipped with card slot, institute
Buckle is stated for being clamped with card slot, with the first half pedestal of connection and the second half pedestals.
The present invention is further arranged to: the outer wall of the pedestal is equipped with the annular slot of indent,
Clip is connected in the annular slot.
The present invention is further arranged to: the first side wall and the second sidewall are tapered surface,
The inner wall three of the first side wall, second sidewall and the porcelain insulator is parallel to each other.
By above-mentioned technical proposal, antifouling work electrostatic precipitator of the present invention is at least had the advantages that
In the technical solution provided by the present invention, because the upper end of the second sidewall of annular wind guide tank is upper lower than the first side wall
End, and circumferentially covering part annular wind guide tank, wind are flowed out from the upper end opening of annular wind guide tank for the lower end surface of porcelain insulator
When can strike the lower end surface of porcelain insulator so that a part of wind flows upwardly into the inner hole of porcelain insulator, in porcelain insulator
Wall is cleaned；The inward flange of pedestal upper surface is cleaned in the outflow of another part wind levels, so as to effectively prevent ash
Deposition of the dirt on pedestal upper surface reduces the risk that pollution flashover occurs for porcelain insulator.
In addition, being formed between two adjacent pillars in connection porcelain insulator since the lower end of insulation barrier is equipped with pillar
The air-guiding aisle in portion, and the wind of air-guiding aisle can be directed on the outer wall of porcelain insulator by the annular wind deflector by being arranged, from
And the outer wall of porcelain insulator can also be cleaned, it further reduced the risk that pollution flashover occurs for porcelain insulator.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of cleaning device in the prior art；
Fig. 2 is the structural schematic diagram of the pedestal of cleaning device in Fig. 1；
Fig. 3 is a kind of the schematic diagram of the section structure for antifouling work electrostatic precipitator that one embodiment of the invention provides；
Fig. 4 is a kind of side view for antifouling work electrostatic precipitator that one embodiment of the invention provides.
Appended drawing reference: 1, sunpender；2, adjusting nut；3, insulation barrier；4, annular wind deflector；5, porcelain insulator；6, pedestal；
7, clip；31, pillar；51, the inner wall of porcelain insulator；52, the outer wall of porcelain insulator；61, annular wind guide tank；62, exhaust vent；
63, air inlet hole；64, cone tank；601, the outer wall of pedestal；611, the first side wall；612, second sidewall；621, first segment；622,
Second segment；100, antifouling work electrostatic precipitator.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
As shown in figure 3, a kind of antifouling work electrostatic precipitator 100 that one embodiment of the present of invention proposes comprising sunpender
1, insulation barrier 3, porcelain insulator 5 and pedestal 6.Insulation barrier 3, porcelain insulator 5 and 6 three of pedestal successively set from top to bottom
It sets.Sunpender 1 sequentially passes through insulation barrier 3, porcelain insulator 5 and pedestal 6.Adjusting nut 2 is threaded on sunpender 1.Adjust spiral shell
Mother 2 is pressed on the side away from porcelain insulator 5 of insulation barrier 3.The lower end of sunpender 1 with cathode line for connecting.
The upper end of pedestal 6 is equipped with the cone tank 64 consistent with the outer shape of the lower end of porcelain insulator 5.Porcelain insulator 5
Lower end be assemblied in cone tank 64.The lower end surface of porcelain insulator 5 and the bottom surface of cone tank 64 offset, the outer wall of porcelain insulator 5
52 are interference fitted with the side wall of cone tank 64, so that the holding of both pedestal 6 and porcelain insulator 5 is relatively fixed.
The bottom surface of cone tank 64 is equipped with annular wind guide tank 61.Annular wind guide tank 61 is overlapped with the center line of porcelain insulator 5.
The opening of the lower end surface of porcelain insulator 5 circumferentially covering part annular wind guide tank 61.Annular wind guide tank 61 has opposite first
Side wall 611 and second sidewall 612.Second sidewall 612 is located at the inside of the first side wall 611.The upper end of second sidewall 612 is lower than the
The upper end of one side wall 611.Have the air inlet hole 63(for being through to annular wind guide tank 61 as shown in Figure 4 on the outer wall 601 of pedestal 6).
The exhaust vent 62 through upper and lower ends is additionally provided on pedestal 6.Exhaust vent 62 is located at the inside of annular wind guide tank 61.It hangs
Bar 1 passes through pedestal 6 via the exhaust vent 62.
Wherein, the air inlet hole 63 on pedestal 6 can be connect with external air blower.Wind enters annular wind-guiding from air inlet hole 63
In slot 61.Then wind is flowed out from the upper end opening of annular wind guide tank 61, due to the lower end surface circumferentially covering part of porcelain insulator 5
The opening of annular wind guide tank 61, so that wind can strike the lower end surface of porcelain insulator 5, so that a part of wind flows upwardly into porcelain insulating
The inner hole of son 5, cleans the inner wall 51 of porcelain insulator 5；Again because the upper end of the second sidewall 612 of annular wind guide tank 61 is low
In the upper end of the first side wall 611, so that the inward flange of 6 upper surface of pedestal is cleaned in the outflow of another part wind levels, thus
Deposition of the dust on 6 upper surface of pedestal can be effectively prevented, reduce the risk that pollution flashover occurs for porcelain insulator 5.
As shown in figure 3, the lower end of above-mentioned insulation barrier 3 has pillar 31.Insulation barrier 3 passes through pillar 31 and porcelain insulator
5 upper surface offsets.The quantity of pillar 31 is two or more, and along the rounded distribution of the center line of porcelain insulator 5.Adjacent two
The air-guiding aisle for being formed between a pillar 31 and being connected to inside porcelain insulator 5.The lower end surface of insulation barrier 3 is equipped with annular wind-guiding
Plate 4.The inside of annular wind deflector 4 is inserted into the upper end of porcelain insulator 5, and has interval between the two.Annular wind deflector 4 is used for will
The wind of air-guiding aisle is directed on the outer wall 52 of porcelain insulator 5.Specifically, 5 inner hole of porcelain insulator is flowed into from annular wind guide tank 61
Wind it is a part of can from the upper end of porcelain insulator 5 flow into air-guiding aisle, it is exhausted that the guiding then through annular wind deflector 4 flow to porcelain
The outer wall 52 of edge 5 is cleaned with the outer wall 52 to porcelain insulator 5, further reduced the wind that pollution flashover occurs for porcelain insulator 5
Danger.
In the above example, both pedestal 6 and insulation barrier 3 cooperate, and can both carry out to the inner hole of porcelain insulator 5 clear
It is clean, can also the outer wall 52 to porcelain insulator 5 clean, thus significantly reduce porcelain insulator 5 occur pollution flashover risk,
Security performance is higher.
Further, pedestal 6 above-mentioned can be two-half structure, and respectively the first half pedestals and the second half pedestals.
One in both the first half pedestals and the second half pedestals is equipped with buckle, another is equipped with card slot, and buckle is used for and card slot
Clamping, with the first half pedestal of connection and the second half pedestals.
In the examples described above, by setting pedestal 6 to the removable assembling structure of two halves formula, facilitating will be under porcelain insulator 5
End is fitted into the cone tank 64 of 6 upper end of pedestal.
Further, as shown in Figure 3 and Figure 4, the annular slot of indent can be equipped on the outer wall 601 of said base 6.Ring
It is connected with clip 7 in shape card slot, so can be further improved the connective stability of both the first half pedestals and the second half pedestals.
As shown in figure 3, the first side wall 611 above-mentioned and second sidewall 612 can be tapered surface.The first side wall 611,
51 three of inner wall of two side walls 612 and porcelain insulator 5 is parallel to each other, and the wind be so conducive in annular wind guide tank 61 is exhausted along porcelain
The inner wall 51 of edge 5 cleans it, and cleaning effect is preferable.
Further, air inlet hole 63 above-mentioned can be linear type hole, the center line of air inlet hole 63 and the first side wall 611 and
Second sidewall 612 is tangent, to prevent the wind flowed out from air inlet hole 63 from directly hitting with the first side wall 611 and second sidewall 612
Hit and cause the loss of energy.
Further, as shown in figure 3, the inner wall of annular wind deflector 4 can be tapered, and with the outer wall of porcelain insulator 5 52
In parallel, the center line of annular wind deflector 4 is overlapped with the center line of porcelain insulator 5.In this example, annular wind deflector 4 can incite somebody to action
Wind is conducive to clean the outer wall 52 of porcelain insulator 5 along the direction export for being parallel to 5 outer wall of porcelain insulator.
Further, as shown in figure 3, the outer wall 601 of said base 6 can be with tapered shape, and outer diameter is from top to bottom gradually
Increase.The upper end of the outer wall 601 of pedestal 6 is intersected with the upper end of the inner wall of cone tank 64, to form a circular seamed edge line, such as
This can reduce the deposition of dust here, prevent dust deposit on the outer wall 52 of porcelain insulator 5, it is exhausted to further reduced porcelain
The risk that 5 pollution flashover phenomenon of edge occurs.
Further, as shown in figure 3, exhaust vent above-mentioned 62 can have sequentially connected first segment 621 from top to bottom
With second segment 622.First segment 621 and second segment 622 are tapered.The internal diameter of first segment 621 is gradually reduced from top to bottom, and second
The internal diameter of section 622 is gradually increased from top to bottom.
By above-mentioned setting, since the internal diameter of first segment 621 is gradually reduced from top to bottom, so that outflow first segment 621
Wind speed gradually accelerate, be conducive to take out of the dust of 5 inner hole of porcelain insulator.Again from top to bottom because of the internal diameter of second segment 622
It is gradually increased, inside from second segment 622 to electric field, forms apparent zone of positive pressure, buffer area and negative pressuren zone step by step, with reduction pair
The interference of electric field internal pressure.
Further, the upper end of the inner wall of aforementioned first segment 621 can intersect with the upper end of second sidewall 612, to be formed
Round sideline prevents the deposition of dust, further reduced the risk of 5 pollution flashover phenomenon of porcelain insulator generation.
What needs to be explained here is that: in the absence of conflict, those skilled in the art can according to the actual situation by
Relevant technical characteristic is combined with each other in above-mentioned each example, to reach corresponding technical effect, particularly for various combined situations
It will not repeat them here.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (3)
1. a kind of antifouling work electrostatic precipitator, which is characterized in that including sunpender (1), insulation barrier (3), porcelain insulator (5) and bottom
Seat (6)；
The insulation barrier (3), porcelain insulator (5) and the pedestal (6) three set gradually from top to bottom, the sunpender
(1) insulation barrier (3), porcelain insulator (5) and the pedestal (6) are sequentially passed through, is threadedly coupled on the sunpender (1)
It states adjusting nut (2), the adjusting nut (2) is pressed on the side away from porcelain insulator (5) of insulation barrier (3)；It is described to hang
The lower end of bar (1) with cathode line for connecting；
The upper end of the pedestal (6) is equipped with the cone tank (64) consistent with the outer shape of lower end of porcelain insulator (5), described
The lower end of porcelain insulator (5) is assemblied in the cone tank (64), lower end surface and cone tank (64) of the porcelain insulator (5)
Bottom surface offsets, and the outer wall (52) of the porcelain insulator (5) and the side wall of the cone tank (64) are interference fitted；
The bottom surface of the cone tank (64) is equipped with annular wind guide tank (61), the annular wind guide tank (61) and the porcelain insulator
(5) center line is overlapped；The opening of the lower end surface of the porcelain insulator (5) circumferentially covering part annular wind guide tank (61)；Institute
Annular wind guide tank (61) are stated with opposite the first side wall (611) and second sidewall (612), the second sidewall (612) is located at
The inside of the first side wall (611), the upper end of the second sidewall (612) are lower than the upper end of the first side wall (611)；Institute
Stating has the air inlet hole (63) for being through to the annular wind guide tank (61) on the outer wall (601) of pedestal (6)；
The exhaust vent (62) through upper and lower ends is additionally provided on the pedestal (6), the exhaust vent (62) is located at the annular and leads
The inside of wind groove (61), the sunpender (1) pass through the pedestal (6) via the exhaust vent (62)；
The lower end of the insulation barrier (3) has pillar (31), and the insulation barrier (3) passes through the pillar (31) and the porcelain
The upper surface of insulator (5) offsets；The quantity of the pillar (31) is two or more, and along the center of the porcelain insulator (5)
The rounded distribution of line；The air-guiding aisle for being formed between two adjacent pillars (31) and being connected to inside porcelain insulator (5)；
The lower end surface of the insulation barrier (3) is equipped with annular wind deflector (4)；Described in the upper end insertion of the porcelain insulator (5)
The inside of annular wind deflector (4), and there is interval between the two；The annular wind deflector (4) is for leading the wind of air-guiding aisle
To the outer wall (52) of porcelain insulator (5)；
Wherein, the pedestal (6) is two-half structure, and respectively the first half pedestals and the second half pedestals；
One in both the first half pedestal and the second half pedestal is equipped with buckle, another is equipped with card slot, institute
Buckle is stated for being clamped with card slot, with the first half pedestal of connection and the second half pedestals.
2. antifouling work electrostatic precipitator according to claim 1, which is characterized in that
The outer wall (601) of the pedestal (6) is equipped with the annular slot of indent,
Clip (7) are connected in the annular slot.
3. antifouling work electrostatic precipitator according to claim 1 or 2, which is characterized in that
The first side wall (611) and the second sidewall (612) are tapered surface,
Inner wall (51) three of the first side wall (611), second sidewall (612) and the porcelain insulator (5) is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811458688.2A CN109550596A (en) | 2018-11-30 | 2018-11-30 | A kind of antifouling work electrostatic precipitator |
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| CN201811458688.2A CN109550596A (en) | 2018-11-30 | 2018-11-30 | A kind of antifouling work electrostatic precipitator |
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