CN217615316U - Dust collecting polar plate for electric-bag composite dust collector and electric-bag composite dust collector - Google Patents

Abstract

The utility model relates to a dust collecting polar plate for an electric-bag composite dust collector and the electric-bag composite dust collector, wherein the dust collecting polar plate comprises a first dust collecting polar plate and a second dust collecting polar plate, and the first dust collecting polar plate and the second dust collecting polar plate have a grid structure; and the suspension beam is connected with the first dust collecting polar plate and the second dust collecting polar plate, the first dust collecting polar plate is relative to the second dust collecting polar plate, the suspension beam is movable between a first position and a second position, the first dust collecting polar plate is spaced apart from the second dust collecting polar plate, the second position, the first dust collecting polar plate is attached to the second dust collecting polar plate and seals the holes in the grid structure. According to the utility model discloses a polar plate that gathers dust for compound dust remover of electric bag not only can increase the dust collection area in electric dust removal district, can also realize the independent deashing in electric dust removal district and sack dust removal district, improves the desorption efficiency of compound dust remover of electric bag.

Description

Dust collecting polar plate for electric-bag composite dust collector and electric-bag composite dust collector

Technical Field

The utility model relates to a flue gas dust collecting equipment field specifically relates to a polar plate and compound dust remover of electricity bag that gather dust for compound dust remover of electricity bag.

Background

At present, the industrial flue gas dust remover mainly comprises an electric dust remover, a bag type dust remover and an electric bag composite dust remover, wherein the electric bag composite dust remover combines the characteristics of the electric dust remover and the bag type dust remover, and is a novel energy-saving high-efficiency dust remover. The Advanced hybrid particulate filter-AHPC (Advanced high-performance plasma) structure is one of the main structures of the electrostatic and fabric composite dust collector, namely the arrangement and combination of an electrostatic dust collection area and a fabric bag dust collection area. The U.S. energy and environment center invented the dust remover with the structure in 2001, and related patents of the electric-bag composite dust remover with the structure are sequentially issued in 2010 at home.

The electric bag composite dust collector with the structure is characterized in that the electric dust collection area and the cloth bag dust collection area are arranged at intervals, the middle part of the electric dust collection area is separated by the porous plate, the smoke firstly enters the electric dust collection area, part of particles are collected by the porous plate, the rest particles enter the cloth bag dust collection area along with the smoke through the porous plate, the distance from the electric area to the cloth bag area along the way is short, the charge attenuation is less, the charge amount of the particles reaching the surface of the cloth bag is high, the dust layer is more loose, the voltage drop of the electric bag composite dust collector is lower, and the particle removal efficiency is improved. However, the AHPC structure has not been widely used in engineering so far, mainly because: (1) When the dust remover is used for removing dust, particulate matters in an electric area and a bag area can cross the area through a porous plate structure, and particularly when a cloth bag is sprayed, dropped fly ash enters the electric area again, so that the repeated trapping of the particulate matters is caused, and the removal efficiency of the particulate matters is reduced; (2) The blowing air flow not only changes the flow field of the region, but also influences the flow fields of other regions; (3) The porous plate structure causes the area of a dust collecting pole plate of the electric dust removing area to be reduced, the volume of the dust remover is increased, and meanwhile, the porous structure increases the processing and manufacturing cost. Therefore, a novel structure is needed to be designed, on the basis of overcoming the structural defect of the porous plate, the high charged quantity of the particulate matters is kept, the removal efficiency of the electrostatic fabric filter is improved, and the advantages of the electrostatic fabric filter are fully exerted.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving one of the technical problems in the related art at least to a certain extent.

Therefore, an object of the utility model is to provide a polar plate that gathers dust for compound dust remover of electricity bag, it replaces the porous plate structure through compound polar plate structure to solve the defect of current porous plate structure, improve the dust collection efficiency of compound dust remover of electricity bag.

The embodiment of the utility model provides a dust collecting polar plate for an electric-bag composite dust collector, which comprises a first dust collecting polar plate, wherein the first dust collecting polar plate is provided with a grid structure; the second dust collecting polar plate is of a grid structure and is arranged in parallel with the first dust collecting polar plate; and the suspension beam is connected with the first dust collecting polar plate and the second dust collecting polar plate, the first dust collecting polar plate is relative to the second dust collecting polar plate, the suspension beam is movable between a first position and a second position, the first dust collecting polar plate is spaced apart from the second dust collecting polar plate, the second position, the first dust collecting polar plate is attached to the second dust collecting polar plate and seals the holes in the grid structure.

According to the utility model discloses in the polar plate that gathers dust for electric bag composite dust remover, the two-stage polar plate that gathers dust that comprises first polar plate and the second polar plate that gathers dust has not only increased the area that gathers dust of electric precipitation, has improved the collection efficiency of electric district particulate matter, replaces porous structure with the grid structure moreover and has also reduced the degree of difficulty of manufacturing.

In addition, the dust collecting polar plate for the electrostatic fabric composite dust collector according to the embodiment of the invention can also have the following additional technical features.

In some embodiments, the suspension beam extends normal to the first dust collecting plate or the second dust collecting plate. Such that the first dust collecting plate is movable relative to the second dust collecting plate between a first position and a second position along a normal to the dust collecting plates.

In some embodiments, each of the first dust collecting polar plate and the second dust collecting polar plate comprises two transverse anode plate units and a plurality of longitudinal anode plate units, and the longitudinal anode plate units are connected between the two transverse anode plate units and are arranged at intervals; thereby, a grid structure of the first dust collecting electrode plate and the second dust collecting electrode plate is formed. And the longitudinal anode plate units of the first dust collecting polar plates and the longitudinal anode plate units of the second dust collecting polar plates are alternately arranged in a complementary mode along the direction from the first end to the second end of the transverse anode plate units. Thus, in the second position, the first dust collecting electrode plate and the second dust collecting electrode plate can close the holes in the mutual grid structure.

In some embodiments, the longitudinal anode plate units of the first dust collecting plate are spaced at intervals which are increased progressively in the direction from the first end to the second end of the transverse anode plate unit, and the longitudinal anode plate units of the second dust collecting plate are spaced at intervals which are decreased progressively in the direction from the first end to the second end of the transverse anode plate unit. The resistance of the flue gas along the way can be regulated and controlled by regulating the distance between the longitudinal anode plate units, so that the flue gas is uniformly distributed.

In some embodiments, each of the longitudinal anode plate units of the first dust collecting plate and an adjacent one of the longitudinal anode plate units of the second dust collecting plate form a grid unit in a direction from the first end to the second end of the transverse anode plate unit.

In some embodiments, the ratio of the width of the longitudinal anode plate unit of the first dust collecting plate to the width of the longitudinal anode plate unit of the second dust collecting plate in the grid unit ranges from 0.5 to 2. Because the flow rate of the first end of the transverse anode plate unit is large, in order to ensure that the smoke is uniformly distributed, the ratio needs to be gradually reduced along the direction from the first end to the second end of the transverse anode plate unit.

In some embodiments, the longitudinal anode plate units are fixed to the transverse anode plate units by screw mounting. Thereby, it is convenient to remove and replace the longitudinal anode plate unit, thereby flexibly adjusting the width of the grid unit.

In some embodiments, the longitudinal anode plate units are slidably disposed on the transverse anode plate units. Therefore, the width of the grating unit can be flexibly adjusted, and the grating unit is convenient to detach and replace.

In some embodiments, the electrostatic fabric composite precipitator includes a housing and an electrostatic fabric dedusting area disposed in an inner cavity of the housing, the electrostatic fabric dedusting area includes a plurality of electrostatic fabric dedusting areas and a fabric bag dedusting area disposed between the two electrostatic fabric dedusting areas; the electric dust collection area comprises a row of polar line rows and two rows of dust collection polar plates; a cloth bag row is arranged in the middle of the cloth bag dust removing area, and the first end parts of the first dust collecting polar plates of the electric dust removing areas on the two sides of the cloth bag dust removing area are connected through an air distribution plate. Therefore, the flue gas can be uniformly dispersed to each electric dedusting area.

In some embodiments, the cloth bag row comprises a plurality of cloth bags which are arranged at equal intervals along the advancing direction of the smoke, and the cloth bag row is parallel to the dust collecting polar plate. The charged particles remained after passing through the electric dust removing area can be collected in the largest area by parallel arrangement.

According to the dust collecting polar plate for the electrostatic fabric filter of the embodiment of the utility model, the dust collecting polar plate with the two-stage grid structure is used for replacing the traditional perforated plate, the dust collecting area of the electric dust collecting area is increased, and the particulate matter collecting efficiency of the electric dust collecting area can be improved by 10-20%; in addition, the first dust collecting polar plate is movable relative to the second dust collecting polar plate along the suspension beam, so that the first dust collecting polar plate and the second dust collecting polar plate can be attached to each other and close the holes in the grid structures during dust removal, an electric dust removing area and a cloth bag dust removing area are separated, independent dust removal of the electric dust removing area and the cloth bag dust removing area is realized, secondary dust raising caused by dust removal is reduced, the high charge quantity of particulate matters is kept, and the removal efficiency of the electric bag composite dust remover is improved.

Drawings

Further features and advantages of the invention are seen in the following description, which explains the invention in more detail on the basis of embodiments, in conjunction with the drawings.

Fig. 1 is a schematic perspective view of a dust collecting pole plate for an electrostatic and fabric composite precipitator in a first position a according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a dust collecting pole plate for an electric-bag composite dust collector in a second position B according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along the line C-C of FIG. 1

Fig. 4 is a schematic view of a partial structure of an electrostatic fabric filter according to an embodiment of the present invention.

Fig. 5 is a partially enlarged view of a portion E in fig. 4. (dust collecting plate in first position A)

Fig. 6 is a schematic perspective view of the dust collecting plate in fig. 5 in a second position B.

100-dust collecting polar plate;

110-a first dust collecting polar plate, 111-a first end of the first dust collecting polar plate; 120 second dust collecting polar plate;

130-a suspension beam;

10-transverse anode plate unit, 11-first end, 12-second end;

20-longitudinal anode plate unit;

200-a housing;

300-electric bag dust removal area;

310-electric dust removal zone, 311-polar line row, 3111-discharge electrode line;

320-bag dust removal area, 321-bag row, 3211-bag;

330-air distribution plate;

d-a grid unit; f-direction of flue gas advance

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like as used herein are for illustrative purposes only and are not intended to limit the present invention.

Referring to fig. 1 and 2, the embodiment of the present invention provides a dust collecting plate 100 for an electrostatic and fabric composite dust collector, which includes a first dust collecting plate 110, wherein the first dust collecting plate 110 has a grid structure; the second dust collecting polar plate 120, the second dust collecting polar plate 120 has a grid structure, and the second dust collecting polar plate 120 is arranged in parallel with the first dust collecting polar plate 110; and the suspension beam 130 is connected with the first dust collecting polar plate 110 and the second dust collecting polar plate 120, the first dust collecting polar plate 110 is movable relative to the second dust collecting polar plate 120 along the suspension beam 130 between a first position A and a second position B, the first dust collecting polar plate 110 is spaced from the second dust collecting polar plate 120 at the first position A, and the first dust collecting polar plate 110 is attached to the second dust collecting polar plate 120 at the second position B and the holes in the mutual grid structures are sealed. The first position A is used for the dust removal stage of the electrostatic fabric filter, and the second position B is used for the ash removal stage of the electrostatic fabric filter.

As shown in fig. 1 and 2, the direction from the first end 11 to the second end 12 of the transverse anode plate unit 10 is the same as the flue gas traveling direction F.

As shown in fig. 1, the suspension beam 130 extends in a normal direction of the first dust collecting plate 110 or the second dust collecting plate 120. The first dust collecting plate can move between a first position and a second position relative to the second dust collecting plate along the normal direction of the dust collecting plates.

As shown in fig. 1 and fig. 2, each of the first dust collecting electrode plate 110 and the second dust collecting electrode plate 120 includes two transverse anode plate units 10 and a plurality of longitudinal anode plate units 20, and the longitudinal anode plate units 20 are connected between the two transverse anode plate units 10 and are arranged at intervals, so as to form a grid structure of the first dust collecting electrode plate 110 and the second dust collecting electrode plate 120. And the longitudinal anode plate units 20 of the first dust collecting electrode plate 110 and the longitudinal anode plate units 20 of the second dust collecting electrode plate 120 are alternately arranged in a complementary manner along the smoke advancing direction F. Therefore, the first dust collecting electrode plate 110 and the second dust collecting electrode plate 120 can close the holes in the mutual grid structure, and the first dust collecting electrode plate 110 and the second dust collecting electrode plate 120 are completely attached.

As shown in fig. 3, the longitudinal anode plate units 20 of the first dust collecting electrode plate 110 are spaced at intervals which are increased progressively in the direction from the first end 11 to the second end 12 of the transverse anode plate unit 10, i.e., progressively increased in the flue gas advancing direction F; the spacing distance between the longitudinal anode plate units 20 of the second dust collecting electrode plate 120 decreases progressively in the direction from the first end 11 to the second end 12 of the transverse anode plate unit 10, i.e., in the flue gas advancing direction F. Therefore, the resistance of the flue gas along the way can be regulated and controlled by adjusting the distance between the longitudinal anode plate units, so that the flue gas is uniformly distributed.

As shown in fig. 3, each of the longitudinal anode plate units 20 of the first dust collecting plate 110 and an adjacent one of the longitudinal anode plate units 20 of the second dust collecting plate 120 constitute one grid unit D in a direction from the first end 11 to the second end 12 of the transverse anode plate unit 10. For example, from the first end 11 of the transverse anode plate unit 10, the first longitudinal anode plate unit 20 of the first dust collecting plate 110 and the first longitudinal anode plate unit 20 of the second dust collecting plate 120 form a grid unit D, the second longitudinal anode plate unit 20 of the first dust collecting plate 110 and the second longitudinal anode plate unit 20 of the second dust collecting plate 120 form a grid unit D, and so on.

As shown in fig. 3, the ratio of the width of the longitudinal anode plate unit 20 of the first dust collecting plate 110 to the width of the longitudinal anode plate unit 20 of the second dust collecting plate 120 in the grid unit D is in the range of 0.5 to 2. Since the first end 11 of the transverse anode plate unit 10 is close to the inlet of the flue gas, the flow rate is large, and in order to make the flue gas entering the grid pores uniformly distributed, the ratio needs to be gradually reduced along the flue gas advancing direction F.

As shown in fig. 1 and 2, in some embodiments, the longitudinal anode plate units 20 are secured to the transverse anode plate units 10 by screw mounting. Thereby, it is convenient to remove and replace the longitudinal anode plate unit 20, thereby flexibly adjusting the width of the grid unit D.

As shown in fig. 1 and 2, in some embodiments, the longitudinal anode plate units 20 are slidably disposed on the transverse anode plate units 10. For example, a sliding groove is formed on the transverse anode plate unit 10 along the direction from the first end 11 to the second end 12 of the transverse anode plate unit 10, and the longitudinal anode plate unit 20 is connected with the transverse anode plate unit 10 in a matching manner through the sliding groove and can move back and forth in the sliding groove along the direction parallel to the forward direction F of the flue gas. Thus, the width of the grating unit D can be flexibly adjusted, and the grating unit D is convenient to detach and replace.

As shown in fig. 4, in some embodiments, the electrostatic and fabric composite precipitator includes a housing 200; the electric bag dust removing area 300 is arranged in the inner cavity of the shell 200, and the electric bag dust removing area 300 comprises a plurality of electric dust removing areas 310 and a cloth bag dust removing area 320 arranged between the two electric dust removing areas 310; the electric dust collection area 310 comprises a row of polar lines 311 and two rows of dust collection polar plates 100; the middle of the bag dust removing area 320 is provided with a bag row 321, and the first ends 111 of the first dust collecting polar plates of the electric dust removing areas 310 at the two sides of the bag dust removing area 320 are connected through an air distribution plate 330. The air distribution plate 330 is a bent plate with a certain angle, is arranged close to the flue gas inlet, and can be used for reducing the direct impact of the flue gas, so that the flue gas is uniformly distributed.

As shown in fig. 4, in some embodiments, the cloth bag row 321 includes several cloth bags 3211 arranged at equal intervals along the smoke advancing direction F, and the cloth bag row 321 is parallel to the dust collecting electrode plate 100. The parallel arrangement of the cloth bag row 321 and the dust collecting pole plate 100 can capture the charged particles left after passing through the electric dust removing area 310 in the largest area.

According to the dust collecting polar plate 100 for the electrostatic fabric filter, the conventional porous plate is replaced by the dust collecting polar plate with the two-stage grid structure, the dust collecting area of the electrostatic fabric filter 310 is increased, and the particulate matter collecting efficiency of the electrostatic fabric filter 310 can be improved by 10% -20%; in addition, the first dust collecting polar plate 110 is movable relative to the second dust collecting polar plate 120 along the suspension beam 130, so that when dust is removed, the first dust collecting polar plate 110 and the second dust collecting polar plate 120 can be attached to each other and close the holes in the mutual grid structures, so that the electric dust removing area 310 and the cloth bag dust removing area 320 are separated, independent dust removal of the electric dust removing area 310 and the cloth bag dust removing area 320 is realized, secondary dust raising caused by dust removal is reduced, high electric charge of particulate matters is kept, and removal efficiency of the electric bag composite dust remover is improved.

As shown in FIG. 5, in some embodiments, the width of the grid cells D is greater than 1/5 of the diameter of the cloth bag 3211 and less than 1/2 of the diameter of the cloth bag 3211. When the width of the grid unit D is too large, the flow field distribution in the bag dust removal area 320 is not uniform, and when the width is too small, the manufacturing and installation costs are increased. In addition, the pressure drop of the first dust collecting electrode plate 110 and the second dust collecting electrode plate 120 can also be adjusted by adjusting the width of the grid unit D.

As shown in fig. 4, in some embodiments, the dust collecting plates 100 in the electric bag dust collecting area 300 are arranged in parallel and at intervals along the forward direction F of the flue gas. The parallel arrangement of the dust collecting polar plates 100 can collect charged particles in the electric dust removal stage in the largest area.

As shown in fig. 4, in some embodiments, the polar line row 311 is disposed in the middle of the two rows of dust collecting polar plates 100 of the electric dust collecting area 310 and is parallel to the dust collecting polar plates 100, and the polar line row 311 includes a plurality of discharge polar lines 3111 arranged at equal intervals along the smoke advancing direction F. The discharge electrode wire 3111 is used for connecting a high voltage power supply to generate corona discharge.

As shown in fig. 4, in some embodiments, the electrical dust extraction area on both sides of housing 200 comprises a row of wire rows 311 and a row of dust collection plates 100. The polar rows 311 are located near both sides of the housing 200 for charging particles in the flue gas at both sides of the housing 200.

In some embodiments, the electrostatic fabric filter further comprises a rapping dust-cleaning structure and a blowing dust-cleaning structure. The rapping dust-cleaning structure is used for rapping dust deposited on the dust collecting polar plate 100 and the polar line 311; the blowing ash removal structure is used for blowing off dust adsorbed on the cloth bag 3211 in the cloth bag row 321.

As shown in fig. 5, in some embodiments, the second dust collecting plate 120 is directly mounted and fixed on the suspension beam 130; a movable structure is arranged at the joint of the first dust collecting polar plate 110 and the suspension beam 130, and the movable structure is used for controlling the first dust collecting polar plate 110 to move between a first position A and a second position B along the normal direction of the dust collecting polar plate 100. For example, the movable structure may be an electric adjusting frame, the electric adjusting frame includes a motor, a telescopic supporting rod and a sealing member, and the telescopic supporting rod is driven by the motor to move along the normal direction of the dust collecting pole plate 100; the sealing element is arranged at the joint of the telescopic supporting rod and the first dust collecting polar plate 110, so that dust can be prevented from accumulating. In the dust removing stage, the first dust collecting polar plate 110 is in the first position a, and the first dust collecting polar plate 110 and the second dust collecting polar plate 120 are spaced apart; in the dust removing stage, the movable structure is adjusted to enable the first dust collecting electrode plate 110 and the second dust collecting electrode plate 120 to approach slowly until the first dust collecting electrode plate 110 and the second dust collecting electrode plate 120 are attached to each other and the holes in the grid structure are sealed, specifically as shown in fig. 6, dust is removed after the first dust collecting electrode plate 110 and the second dust collecting electrode plate are completely sealed. Therefore, independent dust removal of the electric dust removal area 310 and the cloth bag dust removal area 320 can be realized, secondary dust raising caused by dust removal is reduced, and the removal efficiency of the electric bag composite dust remover is improved.

The dust collecting electrode plate 100 for the electrostatic and fabric composite precipitator according to the present invention will be described. As shown in fig. 4, during the dust extraction phase, the first dust collecting plate 110 is in the first position a and the first dust collecting plate 110 is spaced apart relative to the second dust collecting plate 120. After entering the electric bag dust removing areas 300 in the housing 200, the flue gas is dispersed and enters the polar lines 311 in each electric dust removing area 310, and discharge polar lines 3111 in the polar lines 311 are connected with a high-voltage power supply to generate corona discharge so as to charge dust; the charged dust moves to the first dust collecting polar plate 110 and the second dust collecting polar plate 120, wherein part of dust particles of the flue gas are collected by the first dust collecting polar plate 110, then the flue gas moves to the second dust collecting polar plate 120 through the pores in the grid structure of the first dust collecting polar plate 110, after part of dust particles of the flue gas are collected by the second dust collecting polar plate 120, the flue gas enters the bag dust removing region 320 through the pores in the grid structure of the second dust collecting polar plate 120, and the rest charged dust is collected by a bag 3211 arranged in the bag dust removing region 320. After dust removal is completed, the movable structure is adjusted, and the first dust collecting electrode plate 110 is slowly close to the second dust collecting electrode plate 120 along the normal direction of the dust collecting electrode plate 100 until the first dust collecting electrode plate and the second dust collecting electrode plate are attached to each other and close the holes in the mutual grid structure, as shown in fig. 6. After the dust removing device is closed, the rapping dust removing structure and the blowing dust removing structure are opened to rap and blow the dust particles collected by the electric dust removing area 310 and the cloth bag dust removing area 320, and the dust removal is completed. The utility model discloses replace the perforated plate with two-stage polar plate that gathers dust 110, not only overcome the defect of perforated plate structure, increased the dust collection area in electric dust removal district 310 moreover, kept the high electric charge amount of particulate matter, improved the desorption efficiency of the compound dust remover of electric bag, full play has the advantage of the compound dust remover of electric bag.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a dust collection polar plate for electrostatic fabric filter, its characterized in that includes:

the first dust collecting polar plate is provided with a grid structure;

the second dust collecting polar plate is of a grid structure and is arranged in parallel with the first dust collecting polar plate; and

the roof beam suspends in midair, suspend in midair the beam in midair and connect first polar plate with the second polar plate that gathers dust, and first polar plate that gathers dust for the second polar plate that gathers dust is followed it is portable to suspend in midair the beam between first position and second position first position, first polar plate that gathers dust with the second polar plate that gathers dust is spaced apart the second position, first polar plate that gathers dust with the second polar plate that gathers dust is laminated and is sealed the hole in the grid structure each other.

2. The dust collecting plate for the electrostatic fabric composite dust collector as claimed in claim 1, wherein the suspension beam extends in a normal direction of the first dust collecting plate or the second dust collecting plate.

3. The dust collecting pole plate for the electrostatic fabric filter of claim 2, wherein the first dust collecting pole plate and the second dust collecting pole plate each comprise two transverse anode plate units and a plurality of longitudinal anode plate units, and the longitudinal anode plate units are connected between the two transverse anode plate units and are arranged at intervals; and the longitudinal anode plate units of the first dust collecting polar plates and the longitudinal anode plate units of the second dust collecting polar plates are alternately arranged in a complementary mode along the direction from the first end to the second end of the transverse anode plate units.

4. The dust collecting plate for the electrostatic fabric dust collector as claimed in claim 3, wherein the spacing distance between the longitudinal anode plate units of the first dust collecting plate increases progressively along the direction from the first end to the second end of the transverse anode plate unit, and the spacing distance between the longitudinal anode plate units of the second dust collecting plate decreases progressively along the direction from the first end to the second end of the transverse anode plate unit.

5. The dust collecting electrode plate for an electrostatic fabric filter according to claim 3 or 4, wherein each of the longitudinal anode plate units of the first dust collecting electrode plate and an adjacent one of the longitudinal anode plate units of the second dust collecting electrode plate constitute one grid unit in a direction from the first end to the second end of the transverse anode plate unit.

6. The dust collecting plate for the electrostatic fabric composite dust collector as claimed in claim 5, wherein the ratio of the width of the longitudinal anode plate unit of the first dust collecting plate to the width of the longitudinal anode plate unit of the second dust collecting plate in the grid unit is in the range of 0.5-2.

7. The dust collecting polar plate for the electrostatic fabric filter as claimed in claim 3, wherein the longitudinal anode plate unit is fixed on the transverse anode plate unit by screw installation.

8. The dust collecting electrode plate for electrostatic fabric dust collector as claimed in claim 3, wherein said longitudinal anode plate unit is slidably disposed on said transverse anode plate unit.

9. An electrostatic fabric filter, comprising:

a housing; and

the electric bag dust removal area is arranged in the inner cavity of the shell and comprises a plurality of electric dust removal areas and a cloth bag dust removal area arranged between the two electric dust removal areas; the electric dust collection zone comprises one row of pole lines and two rows of dust collection pole plates according to any one of claims 1 to 8; the middle of the cloth bag dust removing area is provided with a cloth bag row, and the first end parts of the first dust collecting polar plates of the electric dust removing areas at the two sides of the cloth bag dust removing area are connected through an air distribution plate.

10. The electrostatic fabric composite dust collector of claim 9, wherein the cloth bag row comprises a plurality of cloth bags which are arranged at equal intervals along the advancing direction of the flue gas, and the cloth bag row is parallel to the dust collecting polar plate.

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