CN207413070U - A kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field - Google Patents

Abstract

The utility model discloses a kind of horizontal embedded-type electric bag complex dust collectors of filter bag of prime with electric field, and filter bag is horizontal in filter bag dedusting area, and put down laterally fixed hang, filter bag using both ends, that is, two water and be staggered with adjacent electric field.The structure design of the utility model is reasonable, and using effect protrudes, and rear class electricity bag recombination region improves positioning accuracy, avoid the collision between filter bag by the way that filter bag is horizontal and two-end-point stationary positioned；Electric field and filter bag interaction arrangement, rear class electric field dedusting area can trap adjacent filter bag ash removal can not drop to the dust of ash bucket in the process, so as to can effectively avoid the reentrainment of dust problem that ascending air etc. is brought, improve ash-removal effect, and at the same time substantially prolong filter bag length, while filter bag is full of deduster space compacterly, electric field and filter bag is made full use of to intercouple, it realizes and reduces deduster floor space, it reduces blowing pressurized air, reduce pulse valve, injection tube, reduce deduster cost and operation and maintenance cost.

Description

A kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field

Technical field

The utility model belongs to technical field of dust removal equipment, and in particular to a kind of horizontal insertion of filter bag of prime with electric field Formula electric-bag complex dust collector.

Background technology

It is a large amount of powder that the substance combustions such as coal generate that air pollution, which has become one of worldwide problem, principal element, Dirt by it is direct or indirect be discharged into air among, industrial dust collector is applied to a kind of heavy of countries in the world aiming at this situation The Environmental-protecting dust-removing equipment wanted.

Industrial dust collector is broadly divided into three kinds of electric precipitator, bag dust collector and electric-bag complex dust collector at present, and wherein electricity removes Dirt device and Technology of Fabric Filter are more early, but have its limitation, and electric-bag complex dust collector is to combine electric precipitator and bag-type dust The novel deduster pattern that the characteristics of both devices develops compares with electric precipitator, has higher efficiency of dust collection and cloth Bag dust collector compares, and has the higher rate of filtration, lower filtration resistance, longer cleaning cycle, more long service life.

The patent of Patent No. US6544317 discloses a kind of embedded-type electric bag complex dust collector, mainly by electric discharge electricity Pole, gather dust orifice plate and electric field and filter bag are mutually embedded and form electric field dedusting area and bag dedusting area carries out dedusting, however it is filtered The fixed form of bag is simply suspended in midair using top card, and lower part does not have fixed mechanism, and the verticality of filter bag suspention is relatively difficult to guarantee, filters Bag touches abrasion with larger space is needed just to be avoided that between pole plate, due to flue gas flow direction from bottom to top, deashing on filter bag and pole plate When the dust that falls the influence of ascending air is subject to easily to generate reentrainment of dust, influence ash-removal effect, at the same the length of filter bag by To injection and the influence of pole plate spacing, such as 15 meters of pole plate length, 7 meters of filter bag length, filter bag length can not be full of rear class space, Also big quantity space can not utilize, thus system handle exhaust gas volumn under identical filter area and filtration velocity, deduster Volume bigger, floor space bigger, cost higher.

The patent of Patent No. US6152988 discloses a kind of electric-bag complex dust collector, using prime electric field, rear class electricity bag Composite construction, rear class electricity bag structure form electric field dedusting and sock filtration, due to rear class electricity bag by filter bag and cathode interlaced arrangement Electric field region is directly formed by filter bag and cathode, voltage of electric field is restricted easily electric discharge and burns filter bag, causes broken bag, and cathode It needs to stay certain distance between line and filter bag, more spaces can be occupied, and burning of easily discharging during filter bag swing is broken, since electric bag is compound Area does not have dust collecting pole plate, it is impossible to and the dust after deashing is trapped in time, easily generates reentrainment of dust, causes filter bag area concentration high, Reentrainment of dust is big, and system resistance is big.

The patent of Patent No. 982121725 discloses a kind of compound horizontal dust remover of high-pressure electrostatic filter pocket, before Grade electric precipitation area, rear class slot type filter bag composite construction, electrostatic precipitation are combined with filter pocket dedusting, since rear class only has filter bag without electricity , the dust for flowing to rear class filter bag can not be made to ionize again charged, can not also trap the dust for flowing to filter bag again by electric field, Reduce dust load on filter bag, after the filter bag ash removal of upper strata clearly under dust when falling into ash bucket, part dust is filtered again by subordinate Bag absorption, rear class can not avoid reentrainment of dust, and filter bag ash removal effect is poor, and filter bag length is restricted, and deduster enlargement is subject to Limitation, device systems resistance are high.

Current existing electric-bag complex dust collector exists due to the unilateral positioning suspension of filter bag, can not overcome the filter bag length to be more than After certain length, it is at present 8 meters, is mutually collided between filter bag, wear-out failure occurs, and filter bag length is restricted, and increases dedusting The floor space and cost of device；The part that filter bag surface comes off after deashing is not dropped at ash bucket dust collection, in filter bag week The problems such as enclosing the reentrainment of dust for diffusing and being brought under the action of flue gas stream rising, causing deashing property bad.Therefore, it is necessary to It provides a kind of filter bag of prime with electric field horizontal embedded-type electric bag complex dust collector, is reaching the reliable deashing of filter bag and avoiding filtering In the case of bag impact failure, flue gas rising is avoided to bring reentrainment of dust etc., filter bag length is greatly prolonged, makes full use of electric bag compound The inner space of deduster, reduces the floor space and cost of deduster, promotes ash-removal effect, reaches and improves overall performance and can By property.

Utility model content

The utility model provides that a kind of horizontal embedded-type electric bag of filter bag of prime with electric field is compound to be removed regarding to the issue above Dirt device, it is therefore intended that reentrainment of dust, filter bag length that air-flow rising etc. is brought effectively is avoided to be limited, causes deduster occupied space Greatly, the problems such as of high cost.

The technical solution of the utility model：

A kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field, including housing and from it is preceding then successively The in vivo prime electric field region of shell and rear class electricity Dai composite dedustings area are arranged on, the prime electric field region includes arranging respectively fixed Preceding anode system and preceding cathod system, the preceding anode system be anode dust collection plate, the preceding cathod system be discharge electrode, institute Stating rear class electricity Dai composite dedustings area includes the dedusting of rear class electric field and filter bag dedusting area, and filter bag built in the filter bag dedusting area is special Sign is：The filter bag is horizontal in filter bag dedusting area, and puts down laterally fixed hang, often row's filter using both ends, that is, two water Bag adjacent area is added and arranges fixed rear anode system and rear cathod system respectively, the rear anode system and rear cathod system Rear class electric field dedusting area is formed, rear anode system is porous pole plate, and rear cathod system is discharge electrode, the filter bag and adjacent electricity Field is staggered, and filter bag both sides arrangement electric field, filter bag length are not more than rear class electric field dedusting section length, and the rear class electricity bag is answered Close one of the dedusting area by the mutually embedded staggered designs in filter bag dedusting area and rear class electric field dedusting area in close-coupled.

Described housing or so is respectively equipped with one in horn-like import and one in horn-like outlet, and housing upper is equipped with Bypass valve arrangement, bottom are equipped with ash bucket, and the filter bag head of rear class electric field dedusting area is equipped with soot cleaning system, the deashing system in housing System carries out pulse jet to filter bag.

The filter bag end is equipped with braced frame, and filter bag leading portion is supported using card, and uses horizontally disposed filter bag mode.

The filter bag is oval, and filter bag length is less than or equal to 20 meters.

The rear class electricity Dai composite dedustings area can be adjusted according to filter bag length.

The multiaperture electrode packing free ratio 30%~70%.

The injection tube of the soot cleaning system is vertical with card to be set or is arranged in parallel with card from top to bottom, injection tube Nozzle direction is from filter bag head towards afterbody.

The nozzle of the injection tube is circular or ellipse.

The porous pole plate uses vertical hanging, and length is less than 17 meters.

Filter bag uses pulse dust cleaning in the rear class electricity Dai composite dedustings area, and electric field anode and cathode uses vibration dust-cleaning, also may be used Using sound wave ashing.

The beneficial effects of the utility model：

The structure design of the utility model is reasonable, and using effect protrudes, and prime electric field region can collect a large amount of dust, reduce into Enter the dust concentration in rear class embedded-type electric bag composite dedusting area, reduce rear class dust treating capacity, be conducive to improve rear class filtering wind Speed；Positioning accuracy is improved in rear class electricity bag recombination region by the way that filter bag is horizontal and two-end-point stationary positioned, avoids touching between filter bag It hits；Electric field and filter bag interaction arrangement, rear class electric field dedusting area can not drop to ash bucket during can trapping adjacent filter bag ash removal Dust, so as to can effectively avoid the reentrainment of dust problem that ascending air etc. is brought, ash-removal effect is improved, and at the same time prolonging significantly Filter bag length has been grown, while filter bag is full of deduster space compacterly, electric field and filter bag has been made full use of to intercouple, it is real Deduster floor space is now reduced, blowing pressurized air is reduced, reduces pulse valve, injection tube, reduce deduster cost and operation Maintenance cost.

Description of the drawings

Fig. 1 is the utility model structure diagram.

Fig. 2 is the horizontal schematic top plan view of rear class filter bag.

Fig. 3 is prime electric field region dedusting schematic diagram.

Fig. 4 is rear class embedded-type electric bag composite dedusting schematic diagram.

Fig. 5 is filter bag pulse jet schematic diagram.

Wherein：Anode system, 5 external genitalia polar systems before 1 housing, 2 prime electric field regions, 3 rear class electricity Dai composite dedustings areas, 4 Cathod system, 9 imports, 10 outlets, 11 Bypass valve arrangements, 12 ash buckets, 13 behind anode system, 8 behind system, 6 filter bags, 7 Soot cleaning system.

Specific embodiment

The horizontal embedded-type electric bag complex dust collector of filter bag of a kind of prime with electric field provided by the utility model, including shell Body 1 and the in vivo prime electric field region 2 of shell and rear class electricity Dai composite dedustings area 3 are then successively set on from preceding, prime electric field region 2 is wrapped Include and arrange fixed preceding anode system 4 and preceding cathod system 5 respectively, preceding anode system 4 be anode dust collection plate, preceding cathod system 5 For discharge electrode, rear class electricity Dai composite dedustings area 3 includes rear class electric field dedusting area and filter bag dedusting area, the built-in filter in filter bag dedusting area Bag 6, filter bag 6 is horizontal in filter bag dedusting area, and equals laterally fixed hang using both ends, that is, two water, often arranges 6 phase of filter bag Neighbouring region add arrange respectively it is fixed after anode system 7 and rear cathod system 8, rear anode system 7 and rear cathod system 8 formed Rear class electric field dedusting area, rear anode system 7 are porous pole plate, and rear cathod system 8 is discharge electrode, and filter bag 6 is handed over adjacent electric field Mistake arrangement, and 6 both sides of filter bag arrangement electric field, 6 length of filter bag are not more than rear class electric field dedusting section length, rear class electricity bag composite dedusting Area 3 is by the mutually embedded staggered designs in filter bag dedusting area and rear class electric field dedusting area in the one of close-coupled.

So design has following features：First, exhaust gas dust is entered before filter bag 6 by remaining after the trapping of electric field twice Dust concentration substantially reduces；Second, it is charged that the electric field of 6 both sides of filter bag ionizes the dust for flowing to filter bag 6, and Charged flows to filter The distance on 6 surfaces of bag is very short, is only 100-200 millimeters of critical distance, the loss very little of dust-charge flows to 6 table of filter bag The dust charged effect in face is more preferable, and the dust layer so formed on 6 surface of filter bag has more charged types and due to identical The interaction of Charged so that the dust layer on 6 surface of filter bag is more fluffy, and gas permeability is more preferable, and resistance is lower；3rd, this The fluffy dust layer of kind needs deashing gas pressure and tolerance less, just the more efficient deashing of energy；4th, from deashing on filter bag 6 In the process, bulk grieshoch drops to ash bucket 12, and rest part dust is popularized during descending slowly and lightly by adjacent electric field, avoids secondary raise Dirt；5th, the flow direction of flue gas flows to 6 head of filter bag to be horizontal from 6 afterbody of filter bag, falls grey direction not during 6 deashing of filter bag It is on the contrary, flue gas stream will not be caused to generate reentrainment of dust to the reentrainment for falling ash.

Housing 1 or so is respectively equipped with one in horn-like import 9 and one in horn-like outlet 10, on 1 left end of housing Portion is equipped with Bypass valve arrangement 11, and bottom is equipped with ash bucket 12, and 6 head of filter bag of rear class electric field dedusting area is equipped with deashing system in housing 1 System 13, soot cleaning system 13 carry out pulse jet to filter bag 6.

6 end of filter bag is equipped with braced frame, and 6 leading portion of filter bag is supported using card, and uses horizontally disposed 6 mode of filter bag.

Filter bag 6 is oval, and filter bag length is less than or equal to 20 meters.

Rear class electricity Dai composite dedustings area 3 can be adjusted according to 6 length of filter bag.

Multiaperture electrode packing free ratio 30%~70%.

The injection tube of soot cleaning system 13 is vertical with card from top to bottom to be set or is arranged in parallel with card from top to bottom, spray The nozzle direction of blowpipe is from 6 head of filter bag towards afterbody.

The nozzle of injection tube is circular or ellipse.

Porous pole plate uses vertical hanging, and length is less than 17 meters.

Filter bag 6 uses pulse dust cleaning in rear class electricity Dai composite dedustings area 3, and electric field anode and cathode uses vibration dust-cleaning, can also adopt Use sound wave ashing.

A kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field provided by the utility model and patent Number for US6544317 patent " a kind of embedded-type electric bag complex dust collector " there are difference, it is as follows：

The hang of the utility model filter bag 6 is different, and the utility model structure filter bag 6 is horizontal, passes through 6 both ends of filter bag point Do not fixed with 2 points of braced frame and card, the spacing of filter bag 6 and pole plate remain unchanged, it is necessary to space it is smaller, it is and special Profit number is hung vertically in top card for a kind of patent " embedded-type electric bag complex dust collector " of US6544317 using filter bag, belongs to Single-point is fixed, and since the flatness of card and the verticality of bag cage have error, generating the spacing of filter bag and anode plate can not ensure, The space of bigger is needed just to can ensure that filter bag and anode plate do not collide abrasion.

The utility model flue gas flow direction is horizontal direction, and dust falling direction is vertical with flue gas flow direction after deashing, will not produce Raw reentrainment of dust, ash-removal effect is more preferable, breaches 7 meters of long limitations of filter bag, and the patent of Patent No. US6544317 is " a kind of The airflow direction of embedded-type electric bag complex dust collector " with dust landing direction on the contrary, reentrainment of dust can be generated, imitate by reduction deashing Fruit.

A kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field provided by the utility model and patent Number for US6152988 patent " a kind of electric-bag complex dust collector " there are difference, it is as follows：

The rear class electric field dedusting area of the utility model is formed by rear anode system 7 and rear cathod system 8, rear anode system System 7 is porous pole plate, and rear cathod system 8 is discharge electrode, and rear class electricity Dai composite dedustings area 3 is by filter bag dedusting area and rear class electric field The mutually embedded staggered designs in dedusting area integrally so design orderly safety and stability in close, and cleaning efficiency is high, and cleanliness factor is high, and A kind of rear class electricity bag composite construction of the patent " electric-bag complex dust collector " of Patent No. US6152988 is straight by filter bag and cathode The electric field region to be formed is connect, such voltage of electric field is compressed, and filter bag is burnt in the electric discharge of easy electric field, causes broken bag, and due to A certain distance is needed between cathode line and filter bag, the space of bigger can be occupied, the in addition unilateral suspension of filter bag has injection and flue gas Generation swing will also result in filter bag electric discharge burning and break during flowing, and electricity bag recombination region does not have dust collecting pole plate, it is impossible to after deashing Dust traps in time, generates reentrainment of dust, filter bag area concentration is high, and reentrainment of dust is big, and system resistance is big.

A kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field provided by the utility model and patent Number for 982121725 patent " a kind of compound horizontal dust remover of high-pressure electrostatic filter pocket " there are difference, it is as follows：

The utility model filter bag 6 and electric field interaction arrangement, and a kind of patent " high-pressure electrostatic of Patent No. 982121725 The compound horizontal dust remover of filter pocket " sets electric field before filter bag, and the utility model is on the entire filter bag length direction in filter bag both sides Increase electric field region, using electric bag composite principle, the compound action in electric field region and filter bag area can be made full use of, therefore, improve filter Bag ash-removal effect, using longer filter bag, can handle the exhaust gas volumn of bigger, floor space is small, and cost is lower, to fine dust With higher trapping effect, dust remover resistance is lower, and dust removal performance is replaced.

Specifically used mode：

As shown in Figure 1, during flue gas is from horn-like import 9 into housing 1, prime electric field region 2 is first passed around within the case 1 and is removed Dirt, subsequently into 3 dedusting of rear class electricity Dai composite dedustings area, finally from the clean flue gas of horn-like 8 discharge of outlet, when filter bag 6 accumulates When tiring out a certain amount of dust, as shown in figure 5, by soot cleaning system 13 pulse jet can be carried out to filter bag 6, fall into dust It is open-minded when a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field is overhauled in ash bucket 12 Bypass valve arrangement 11, makes flue gas flow directly into outlet 10, and discharge bypasses non-purified flue gas.

As shown in figure 3, flue gas enters prime electric field region 2, prime electric field region 2 includes arranging fixed preceding anode system respectively 4 and preceding cathod system 5, preceding anode system 4 is anode plate, and preceding cathod system 5 is discharge electrode, preceding anode system 4 and preceding cathode System 5 forms electric field, and dust charged is attracted on anode plate in flue gas, is then made by vibrated system in preceding anode system 5 Dust releasing enters in ash bucket 12.

As shown in figure 4, flue gas enters rear class electricity Dai composite dedustings area 3, after rear anode system 7 and rear cathod system 8 are formed Grade electric field dedusting area, rear anode system 7 are porous pole plate, and rear cathod system 8 is discharge electrode, and corona discharge is carried out to flue gas, The charged absorption of exhaust gas dust is made by vibrated system dust to be made to fall into ash bucket 12 on porous pole plate, be removed by rear class electric field The flue permeating in dirt area carries out filter bag 6 and filters, last remaining adsorbing powder dust is on filter bag 6 into filter bag 6.

A kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field is filtered using prime electric field region 2, rear class The new rear class electricity Dai composite dedustings area 3 of the horizontal embedded-type electric bag structure of bag, formation dust first pass through 2 electricity of prime electric field region and remove Dirt by 3 formula dedusting of Ji electricity Dai composite dedustings area later, since filter bag 6 is horizontal in filter bag dedusting area, and uses both ends i.e. two The spacing of the fixed hang of point, filter bag 6 and porous pole plate remain unchanged, it is necessary to space it is smaller, 6 length of filter bag is due to adjacent Electric field action can be longer, and 6 length of filter bag is less than or equal to 20 meters；And since filter bag is horizontal, flue gas flow direction is level side To dust falling direction is vertical with flue gas flow direction after deashing, will not generate reentrainment of dust, and ash-removal effect is more preferable, breaches filter bag 6 The limitation of 7 meters of length itself；Often row's 6 adjacent area of filter bag is added arranges fixed rear anode system 7 and rear cathod system respectively 8, rear anode system 7 and rear cathod system 8 form rear class electric field dedusting area, and rear anode system 7 is porous pole plate, rear cathod system 8 be discharge electrode, i.e., 6 both sides of filter bag increases electric field region, applies electric bag composite dedusting principle, improves dust removal performance；And filter bag 6 With the mutually embedded arrangement of electric field, the ash-removal effect of filter bag 6 can be further improved, using longer filter bag 6, bigger can be handled Exhaust gas volumn, floor space smaller, cost is lower, to fine dust have higher trapping effect, dust remover resistance is lower, property It can be more preferable.

Certainly, a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field subtracts under prime electric field action Enter the dust concentration of bag dedusting area less, also had the following advantages on the basis of reduction rear class dust treating capacity：

（1）Enhance the trapping of dust, reduce the dust load for flowing to filter bag；

（2）Enhancing flows to the charged effect of the dust of filter bag；

（3）The dust that the injection of filter bag ash removal is fallen directly is captured after being directly entered adjacent electric field, will not fall into transverse direction On adjacent and lower floor filter bag, filter bag dust load is reduced；

（4）The fine dusts that filter bag ash removal injection is fallen, are trapped by electric field, reduce the secondary fly-up of dust and secondary suction It is attached；

（5）Filter bag length can be longer, more fully using deduster space, reduces floor space, reduces cost of investment；

（6）Manageable exhaust gas volumn bigger, realizes the enlargement of equipment；

（7）Filtration resistance can be reduced, extends cleaning cycle, extends the service life of filter bag, improve the reliable of deduster Property and dust removal performance.

To sum up, the utility model reaches expected purpose.

Claims (10)

1. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field is then set successively including housing and from preceding Put in the in vivo prime electric field region of shell and rear class electricity Dai composite dedustings area, the prime electric field region include arranging respectively it is fixed before Anode system and preceding cathod system, the preceding anode system are anode dust collection plate, and the preceding cathod system is discharge electrode, described Rear class electricity Dai composite dedustings area includes rear class electric field dedusting area and filter bag dedusting area, and filter bag built in the filter bag dedusting area is special Sign is：The filter bag is horizontal in filter bag dedusting area, and puts down laterally fixed hang, often row's filter using both ends, that is, two water Bag adjacent area is added and arranges fixed rear anode system and rear cathod system respectively, the rear anode system and rear cathod system Rear class electric field dedusting area is formed, rear anode system is porous pole plate, and rear cathod system is discharge electrode, the filter bag and adjacent electricity Field is staggered, and filter bag both sides arrangement electric field, filter bag length are not more than rear class electric field dedusting section length, and the rear class electricity bag is answered Close one of the dedusting area by the mutually embedded staggered designs in filter bag dedusting area and rear class electric field dedusting area in close-coupled.

2. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field as described in claim 1, feature exist In：Described housing or so is respectively equipped with one in horn-like import and one in horn-like outlet, and housing left upper part is equipped with Bypass valve arrangement, bottom are equipped with ash bucket, and the filter bag head of rear class electric field dedusting area is equipped with soot cleaning system, the deashing system in housing System carries out pulse jet to filter bag.

3. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field as claimed in claim 1 or 2, feature It is：The filter bag end is equipped with braced frame, and filter bag leading portion is supported using card, and uses horizontally disposed filter bag mode.

4. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field as claimed in claim 1 or 2, feature It is：The filter bag is oval, and filter bag length is less than or equal to 20 meters.

5. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field as described in claim 1, feature exist In：The rear class electricity Dai composite dedustings area can be adjusted according to filter bag length.

6. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field as described in claim 1, feature exist In：The multiaperture electrode packing free ratio 30%~70%.

7. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field as claimed in claim 2, feature exist In：The injection tube of the soot cleaning system is vertical with card to be set or is arranged in parallel with card from top to bottom, the nozzle side of injection tube To from filter bag head towards afterbody.

8. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field as claimed in claim 7, feature exist In：The nozzle of the injection tube is circular or ellipse.

9. a kind of horizontal embedded-type electric bag complex dust collector of filter bag of prime with electric field, feature as described in claim 1 or 6 It is：The porous pole plate uses vertical hanging, and length is less than 17 meters.

10. the horizontal embedded-type electric bag complex dust collector of filter bag of a kind of prime with electric field as described in claim 1 or 5, special Sign is：Filter bag uses pulse dust cleaning in the rear class electricity Dai composite dedustings area, and electric field anode and cathode uses vibration dust-cleaning, can also adopt Use sound wave ashing.