Dust charge type sack cleaner
Technical field
The present invention relates to a kind of cleaner, more particularly to a kind of dust charge type sack cleaner.
Background technology
At present, the cleaner unit of onsite application is divided into sack cleaner and electric cleaner.Sack cleaner is by filter bag pair
Dusty gas carries out filtering and dust collection and filter bag regenerative process, and the discharge process of net gas, realizes sack cleaner pair
The purification of dusty gas and the separation of dust and collection.
Electric cleaner is the foundation using DC electric field, realize that the dust to dusty gas is charged and repelled each other using the same sex and
The Charged feature that there is a natural attraction between the sexes, by adsorbing powder dust at the two poles of the earth, and is received by the deashing to dust collector pole and corona discharge electrode and dust
Collection process, reaches the separation to dust and gas and the purification of dusty gas.
At present, the electric charge field of domestic pre electrified sack cleaner is designed in air inlet, and its Charged will also be
Turn back through air-flow in passage and separated and process of gathering dust with the dust and gas that filter bag after air flow method process, could be entered, and air-flow exists
Turn back with distributed process, due to the ground connection of cleaner unit body, thus in air-flow and the contact process of passage wall surface and powder
Under collision effect between dirt, most of charged dust dead electricity can be caused and be changed into neutral, and this part adsorbing powder dust exists
Filter bag surface is formed after filter cake, the effect repelled each other without the same sex between dust granules, thus the voidage of its filter dirt cake can't
Increase is how many.
And domestic electrostatic fabric filter substantially belongs to two-stage dedusting, prime is electric precipitation, and rear class is bag-type dust, and two-stage is removed
Dirt can make the dust of rear class dedusting thinner, because the cleaner unit equally exists Charged air-flow turning back and be distributed in the channel
Process, thus partial state of charge dust has the generation of dead electricity problem, this will make easily embedded in the filter layer of filter bag of dust collector
Thinner dust, can further result in filter bag regeneration effect difference and the relatively low problem of life-span of the filter bag.
The content of the invention
For many deficiencies of prior art, present invention offer is a kind of to utilize set up high-voltage dc to enter dust
Row is charged, then using system fluid negative pressure effect and dust and gas separation carried out by filter bag, Charged is adsorbed in filter bag
On surface, then timing(Or level pressure)Regeneration and the deashing process of filter bag are realized by way of offline or online blowback, so that
Dust charge type sack cleaner can realize the purification process to dusty gas.
Realize that above-mentioned purpose is employed the following technical solutions:
A kind of dust charge type sack cleaner, the single chamber of the cleaner unit is rectangular three-dimensional chamfered edge pyramidal structure, cleaner unit body
Including air-purifying chamber, dust and gas room, ash bucket, air-purifying chamber is located at the top of dirt room, filter bag is fixed between air-purifying chamber and dust and gas room, only
The connection of air-flow is realized between air chamber and dust and gas room by filter bag, the jet for regenerating reverse gas cleaning for filter bag is provided with air-purifying chamber
Pipe, filter bag purified gas guides to gas outlet by off-line ash-clearing valve;There are the cloth bag and bag cage that filter gas total in dust and gas room
Into dust and gas room lower sides are equipped with dust fall plate washer, and dust fall plate washer is located at insulation board pulse dust cleaning pipe top, insulation board pulse dust cleaning
Pipe connects with insulation board heating apparatus, is mainly used in the soot blowing of insulation board and the heating function of anti-condensation, and insulation board is fixed on body
Inside is in inlet, outlet side;Inlet, outlet is located at the side of dust and gas room, and the opposite side of dust and gas room is provided with the electricity being integrated with
Dizzy couveuse;Lower end in dust and gas room is corona zone, and the corona zone is made up of anode network and negative electrode corona bracket, is fixed on insulation
Corona discharge electrode side connection on plate is the fixing end of negative electrode corona bracket;The lower section of corona zone is ash bucket, and corona zone utilizes HVDC
Electric field carries out charged, the then effect using the fluid negative-pressure and filtering function by filter bag carries out dust and gas separation to dust, makes
Net gas by and Charged adsorbs in filter bag outer surface.
Preferably, insulation board is connected with corona discharge electrode side.
Preferably, the insulation board heating apparatus and the insulation board pulse dust cleaning pipe for soot blowing of anti-condensation are fixed on this in vivo
The top of side insulation board, with prevent insulation board electricity and short circuit are climbed.
Preferably, corona couveuse hangs built with porcelain vase pulse dust cleaning pipe, corona discharge electrode heater, support porcelain vase and porcelain vase
Bar assembly, supports porcelain vase and porcelain vase suspension rod assembly to be vertically arranged, and porcelain vase suspension rod assembly is fixed on support porcelain vase, and porcelain vase pulse is clear
Ash pipe and corona discharge electrode heater are fixed on couveuse side wall, and porcelain vase suspension rod assembly is connected with negative electrode corona bracket.
Preferably, anode network is fixed on cleaner unit inner body wall, negative electrode corona bracket is by solid on porcelain vase suspension rod and insulation board
Fixed corona discharge electrode side connection is attached and fixation, has insulation characterisitic between anode network and negative electrode corona bracket, and forms high pressure
Corona zone.
Preferably, the Charged layer that cloth bag outer surface is formed, in the presence of dust electric charging effect, filters the sky of dirt cake
Gap rate increase scope exists(20~90)×100%.
Using above-mentioned technical proposal, compared with prior art, because the present invention utilizes high pressure(72KV)DC electric field is to powder
Dirt carry out it is charged, then using system fluid negative pressure effect and dust and gas separation carried out by filter bag, make Charged absorption exist
On the outer surface of filter bag, with advantages below:
1. charged to dust first, it is charged after the transient process lost without charged quantity of dust, directly using sack cleaner
Principle is gathered dust;
2., due to the effect of dust electric charging effect, the dust layer that filter bag is formed is little to the resistance of air-flow, it is easy to deashing, than conventional cloth
The low about 500Pa or so of bag dust collector running resistance, or even more than, this charge with dust(Carrying capacity and chargeability)It is relevant,
And charge is relevant with granularity of dust, ratio resistance etc., therefore system overall resistance reduces, and air-introduced machine operation power is reduced, energy-conservation
Effect is obvious.
3., because the dust layer of filter bag outside formation is in the presence of dust electric charging effect, the space of filter dirt cake is improve
Rate, thus its cleaning cycle time can extend, be approximately conventional sack cleaner(2~10)Times, same this concentration with dust and
Charge is relevant, so as to substantially reduce the operation ratio of ash removing equipment, reduces energy consumption.
4. because SR is reduced and the reduction of filter bag reverse gas cleaning number of times, so that filter bag working tension reduces, instead
Blow over the impaired number of times of journey to reduce, thus extend the service life of filter bag and blowing valve, improve the operation ratio of integral device, drop
The low operation and maintenance cost of equipment.
5., due to the dust layer good permeability for being formed, voidage is high, thus the spalling of its filter cake is good after filter bag deformation, because
And the pressure and injection amount of reverse gas cleaning air-flow can be reduced, that is, reduce pressure and the injection time of blowback compressed gas.
6. corona is direct current 72KV, and according to the difference of dust air quantity, it selects electric current to exist(5~50)MA scopes,
Corona discharge power is little.
Description of the drawings
Fig. 1 is the main view of the present invention(Section view)Structural representation.
Fig. 2 is the side view of Fig. 1.
Labelling in figure:Air-purifying chamber 1, cloth bag and bag cage assembly 2, dust and gas room 3, air inlet 4, gas outlet 5, corona discharge electrode couveuse
6, dust fall plate washer 7, insulation board pulse dust cleaning pipe 8, insulate board heating apparatus 9, and insulation board supports 10, and corona discharge electrode side connects 11, ash bucket
12, anode network 13, negative electrode corona bracket 14, porcelain vase pulse dust cleaning pipe 15, corona discharge electrode heater 16 supports porcelain vase 17, porcelain vase suspension rod
Assembly 18, impulse electromagnetic valve 19, compressed gas air accumulator 20, injection tube 21, off-line ash-clearing valve assembly 22.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
Following examples are used to illustrate the present invention, but can not be used for limiting the scope of the invention.Bar in embodiment
Part can further be adjusted according to actual conditions.
The structure of sack cleaner is using the online or offline dust cleaning form of biserial or single-row action of low-voltage pulse, it would however also be possible to employ
The dust cleaning form of biserial or single-row air-box type, the present embodiment by taking single-row action of low-voltage pulse off-line ash-clearing sack cleaner as an example, in detail
Illustrate the specific design scheme of its dust charge type sack cleaner.
The structure of dust charge type sack cleaner is shown in Fig. 1, Fig. 2.The cleaner unit single chamber be inverted pyramids structure, inverted pyramid
It is divided into from top to bottom in vivo being provided with air-purifying chamber 1, dust and gas room 3 and the part of ash bucket 12 3, air-purifying chamber 1 and connects with compressed gas air accumulator 20
Logical air jet pipe 21, compressed gas air accumulator 20 is located at outside the housing of cleaner unit, between compressed gas air accumulator 20 and air jet pipe 21
Fluid passage is provided with the impulse electromagnetic valve 19 of adjusting gas flow.Between air-purifying chamber 1 and dust and gas room 3, it is separated by by card, card
Bag cage assembly, using the tensioner connected mode of elastic ring structure, is made to be located at by hole by air-purifying chamber side with filter bag loaded on inside filter bag
The filter bag outer surface of dust and gas room side is propped up.The effect of air-purifying chamber 1:One is to be capable of achieving the offline or online ash removal to filter bag, and two are
Purified gas is guided to into gas outlet by off-line ash-clearing valve(Case).
Dust and gas room 3 is located at the lower section of air-purifying chamber 1, and air-purifying chamber is located at the top of three-dimensional cone, between air-purifying chamber and dust and gas room
Card elasticity ring structure fixes filter bag.Filter bag is set to become the onty fiuidic passage between air-purifying chamber and dust and gas room, and net
The filter bag internal orifice top of air chamber side is provided with the injection tube that filter bag regenerates reverse gas cleaning, and air-purifying chamber is also by filter bag purified gas
Gas outlet is guided to by off-line ash-clearing valve(Case).The outer surface of cloth bag is exposed in dust and gas room 3.The card dress on the top of dust and gas room 3
There are cloth bag and bag cage assembly 2, its Main Function is to filter grit, separates dust and gas.Cloth bag and bag cage assembly 2 are in vertical and horizontal
Into matrix arrangement, its arrangement quantity is pressed single chamber and processes air quantity integrated configuration.The side of dust and gas room 3 is provided with inlet, outlet 4,5, separately
Side is provided with the corona couveuse 6 being integrated with.With air inlet/outlet(Case)The side plate bottom being separated by is equipped with what is be obliquely installed
Dust fall plate washer 7, the bottom of dust fall plate washer 7 supports 10 equipped with insulation board pulse dust cleaning pipe 8 and insulation board heating apparatus 9 and insulation board.
Lower end in dust and gas room 3 is provided with corona zone.The effect of dust and gas room 3:One is to complete dust charged process;Two are existed as passage
Dust and gas are sent into into filter bag under the guiding of system negative pressure, while the filter dirt cake of filter bag outer surface can be directly blown into into ash during blowback
Bucket;Three is corona discharge electrode except constituting corona zone outer, the metal of its downward sophisticated position and ash bucket of realizing that dust is charged with anode network
Bottom and sidepiece constitute a relatively weak suppression electric field, suppress electric field to fall to the dust in air-flow, including after reverse gas cleaning
Fall the dust of ash bucket, the energy according to dust kinetic energy track is different, its suppress electric field dust is had slow down and pre electrified and
The effect gathered dust in advance.
Corona zone is made up of anode network 13 and negative electrode corona bracket 14, and anode network 13 constitutes the two of insulation with negative electrode corona bracket 14
Individual pole, by corona discharge electrode negative pole is connect, and anode network connects positive pole and by grounding, and the voltage of corona is direct current 72KV, and electric current is pressed
The difference for the treatment of quantity exists(5~50)MA scopes carry out calculating selection.
The effect of corona zone be set up high-voltage dc and and uniform air-flow and suppressing fall the reentrainment of dust effect after ash.
The one end of negative electrode corona bracket 14 is connected 11 fixations, the other end and the porcelain vase suspension rod assembly being located in corona couveuse 6 with corona discharge electrode side
It is connected.Corona couveuse 6 is built with porcelain vase pulse dust cleaning pipe 15, corona discharge electrode heater 16, support porcelain vase 17, porcelain vase suspension rod
Assembly 18.Support porcelain vase 17 to be vertically arranged, support and be set with porcelain vase 17 porcelain vase suspension rod assembly 18.Porcelain vase pulse dust cleaning pipe 15, electricity
Dizzy pole heater 16 is fixed on the side wall of couveuse and corresponding with porcelain vase 17 bottom is supported.Expose the upper end of porcelain vase suspension rod assembly 18
Support porcelain vase 17 outer and as the incoming end of power supply, lower end is connected with negative electrode corona bracket 14.The lower section of corona zone is ash bucket 12, electric
Dizzy area is dust to be carried out using the high-voltage dc between anode and cathode charged, then acts through filter using fluid negative-pressure
Bag carry out dust and gas separation, make Charged adsorb in filter bag outer surface, regenerate filter bag by the blowback process to filter bag and incite somebody to action
Dust releasing is in ash bucket.Corona couveuse 6 mainly realizes that corona discharge electrode insulate, and as the inlet wire case of high voltage power supply, prevents porcelain
The condensation of bottle and the excess accumulation of dust, in order to avoid cause the generation for climbing electricity and short circuit.
Preferably, the dust layer that cloth bag and bag cage assembly 2 are formed filters dirt cake in the presence of dust electric charging effect
Voidage increase, filter dirt cake voidage increase scope exist(20~90)×100%.Cleaning cycle time lengthening, is approximately conventional
3 times of sack cleaner cleaning cycle, generally exist(2-10)Between times.The Charged layer that cloth bag outer surface is formed, belongs to negative
Polarity Charged, though this is because dust charged process has a small amount of positively charged dust, has also been combined in collision process
Into neutral and diffuse into negative polarity Charged, in the presence of same sex Charged repels each other effect, the porosity base of its filter bag
This does not change, but the voidage of its outer surface filter dirt cake there occurs change, according to the defined notion formula of volume ratio, cloth bag appearance
The dust layer air strike rate that face is formed:
P=(V0-V)/V0×100%=(1—ρ0/ρ)×100%
Wherein:P--- voidages;V0--- particle volume;V--- naturalness volumes;
ρ0--- bulk density;ρ --- natural volume density;
It can be seen that V is constant and V0Increase, change can P, make filter dirt cake be provided with the characteristic for filtering sponge, due under the state
The size of filter dirt cake voidage is relevant with dust size component and carrying capacity etc., and its voidage increase scope exists(20~90)×
100%。
The increase of filter dirt cake voidage, reduces will SR, but with the gradually increase of filter dirt cake thickness, resistance meeting
It is gradually increased, this is because it filters dirt cake resistance with filtration velocity, fluid dynamic viscosity factor, filter dirt cake voidage, filter
Dirt cake thickness, filter dirt cake resistance coefficient etc. it is relevant, therefore the filter dirt cake that Charged is formed, by fraction and carrying capacity
It is different, it is possible to increase its voidage scope exists(20~90)× 100%, reduce the overall operation resistance of system, increase filter bag regeneration is anti-
Blow the cycle, reduce regeneration deashing compressed air pressure and flow, extend the usage cycles of pulse valve and off-line ash-clearing valve cylinder,
Extend life-span of the filter bag, slow down body pressure-bearing limiting pressure and time etc..
Due to the dust layer good permeability for being formed, voidage is high, thus the spalling of its filter cake is good after filter bag deformation, can be straight
Connect and drop in ash bucket.
Dust charge type sack cleaner is that to utilize set up high-voltage dc to carry out dust charged, it is charged after
Dust is directly sucked in the outer surface of cloth bag in the presence of fluid negative-pressure, it is charged after air-flow without exhumation process, and the lotus of dust
Electric process is carried out after airflow uniform distribution.Then using fluid negative-pressure effect and dirt carried out by cloth bag and bag cage assembly 2
Edema caused by disorder of QI from, Charged is adsorbed in cloth bag outer surface, and realized by way of offline or online blowback the regeneration of cloth bag with
Deashing process, it is achieved thereby that the purification process of dusty gas.
The course of work of the present invention
Dusty gas Jing air inlet 4 and Jing after the dividing plate between dust and gas room is turned back enter ash bucket 12, the larger particles in dust and gas by
Ash bucket 12 is fallen in inertia;Dust and gas first pass around the corona being made up of anode network 13 and negative electrode corona bracket 14 in uphill process
Area,(0.1~0.01)In time second, most of grit corona can be made to be negative charge, fraction grit corona is positive charge, by
There is a resistance in corona zone convection cell, thus corona zone is the characteristics of have uniform air-flow;Charged air-flow after corona is in stream
In the presence of body negative pressure, the cloth bag space outerpace of matrix arrangement in dust and gas room is dispersed into, and Jing after sock filtration, dust is stayed in
Filter bag outside forms dirt cake, and purified gas Jing cloth bags and bag cage assembly 2 enter air-purifying chamber 1, the purification gas in air-purifying chamber 1
Again Jing off-line ash-clearings valve 22 and house outlet 5 are excluded.With the increase of dedusting process, its charged grit is total by cloth bag and bag cage
Intercept and adsorb more and more thicker in the dirt cake of cloth bag outer surface into 2, its SR also relative increase of walking unhurriedly, when reaching setting
The blocking current path of off-line ash-clearing valve assembly 22, and delayed firing impulse electromagnetic valve 19 should be controlled during resistance, compressed gas gas storage is made
Each filter bag that compressed gas send into the case row within (0.1~0.2) S times by injection tube 21 is dried in tank 20, is made
Filter bag outwards expands and forms back draught and blows off dirt cake is filtered in ash bucket in moment.After the case whole filter bag regeneration blowback, prolong
Shi Kaiqi off-line ash-clearings valve 22, makes the case filter bag to put into filter process from new again.
In filter dirt cheese into during, because grit of the absorption outside filter bag has a charge, and for identical negative polarity
Electric charge, therefore under the charge interaction that the same sex is repelled each other, the filter dirt cake that its dust is formed is than filter dirt that nonpolarity dust is formed
The voidage of cake is much larger and bulk density is much lower, improves the permeability of filter dirt cake, thus filter bag can be made to regenerate blowback
Number of times reduce, while reducing filter bag working tension, extend the service life of filter bag and blowing valve, improve overall setting
Standby operation ratio, reduces the operation and maintenance cost of equipment.
The present invention is higher than conventional sack cleaner(600~800 centimetres), taking up an area occasion to harsh, porcelain vase insulation can be tied
Structure uses panel structure instead, thus identical with the length and width of conventional cloth bag deduster.But do not advocate this form.
Corona zone can set maintenance door, and maintenance door should install the detection switch of security alarm and the protection of high pressure power down function.
Cleaning air compressor can be also set, and compressor outlet gas is used after should being dried.
Above-described embodiment only expresses one embodiment of the present invention, but therefore can not be interpreted as to model of the present invention
The restriction enclosed.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, also
Some deformations and improvement can be made, these belong to protection scope of the present invention.