CN108993038A - A kind of rotating switching type air-flow bag type dust-remover - Google Patents
A kind of rotating switching type air-flow bag type dust-remover Download PDFInfo
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- CN108993038A CN108993038A CN201811010634.XA CN201811010634A CN108993038A CN 108993038 A CN108993038 A CN 108993038A CN 201811010634 A CN201811010634 A CN 201811010634A CN 108993038 A CN108993038 A CN 108993038A
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- deashing
- air
- valve
- bellows
- card
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A kind of rotating switching type air-flow bag type dust-remover, including cabinet and rotating switching type air-flow deashing mechanism；Deashing mechanism includes booster fan, deashing bellows and rotary valve；Booster fan air inlet connects air-purifying chamber, booster fan air outlet connection pressurization air hose；Pressurization air hose protrudes into deashing bellows, between card and deashing bellows cover board；Rotation valve body is respectively communicated with air-purifying chamber, deashing bellows and pressurization air hose, when rotary valve is in filtration condition, cutting connection pressurization air hose, and when rotary valve is in deashing state, cutting connection air-purifying chamber；By providing pressure stable blowback air-flow, keeps filter bag filter bag in deashing injury-free, extend the service life of filter bag, ash-removal effect is greatly improved, and it is hardened to effectively prevent filter bag, while saving pulse spraying equipment again.
Description
Technical field
The invention belongs to the dust removal field of dusty gas, in particular to a kind of rotating switching type air-flow deashing bag-type dustings
Device.
Background technique
Currently, sack cleaner is widely used in purifying the industries such as power generation, cement, chemical industry, metallurgy, mine, grain processing
Generated dusty gas.The working principle of sack cleaner is that dusty gas is introduced to deduster and passes it through to be set to remove
Filter bag in dirt device, grit is intercepted and is trapped in filter bag surface, forms dust layer.Pure air then passes through filter bag and flows
Deduster out.After running for a period of time, bag-type duster filtering bag meet dirt surface accumulation dust layer it is more and more thicker, make deduster
Drag losses increase.Therefore, it after sack cleaner operation a period of time, needs to carry out deashing.
The purge mode of existing sack cleaner mainly uses pulse jetting deashing and two kinds of air pressure blowback.
Pulse jetting deashing mode is that pressure-air is blown at a high speed filter in the of short duration time (typically not greater than 0.2 second)
Bag, generation and the reversed blowback air-flow of filtered airflow make to generate impulsive inflation shake in filter bag, and the acquisition of filter bag wall is very high outward
Acceleration makes the dust layer on bag surface fall off to shake off dust.Filter bag can accelerate the tired of filter bag through long-term, deformation repeatedly
Labor shortens the service life of filter bag significantly.Since the cost of filter bag occupies larger proportion, above-mentioned arteries and veins in entire deduster
The purge mode of punching blowing is to increase filter bag waste by the variation of filter bag shape, therefore filter bag problem easy to damage is aobvious
It obtains very prominent.
Back-blowing mechanism is the important component of large-scale back-blowing sack cleaner soot cleaning system.Back-blowing mechanism is basic at present
On all inside deduster, limited by the factors of temperature environment, be easy to appear blowback valve and leak out, machinery be easy to appear therefore
Barrier；In addition, in actual moving process, by equipment machining accuracy, installation accuracy, the constraint of installer's quality and mechanical structure limit
System, each orientation blowback point and each Compartment theory entry position, frequent appearance position deviation cause the damage of a large amount of blowback air quantity
It loses.And maintenance difficult, the problems such as labor intensity is high.
Summary of the invention
For above-mentioned existing sack cleaner technical deficiency, the purpose of the present invention is to provide a kind of stable and reliable operation,
Simple installation, a kind of low rotating switching type air-flow deashing mechanism sack cleaner of equipment cost.
The purpose of the present invention is be achieved through the following technical solutions:
A kind of rotating switching type air-flow bag type dust-remover, including cabinet and rotating switching type air-flow deashing mechanism；Case
Card is horizontally arranged in internal portion；Card connects multiple filter bags；Cabinet is separated into upper and lower two chambers, position by card and filter bag
What it is in lower part is dust and gas room, and superposed is air-purifying chamber；It is characterized in that, deashing mechanism includes booster fan, deashing bellows
And rotary valve；Booster fan air inlet connects air-purifying chamber, booster fan air outlet connection pressurization air hose；It is installed above card clear
Grey bellows cover board, installation site are higher than top surface on pressurization air hose, are made of clearly deashing bellows cover board, deduster side wall, card
Grey bellows；Pressurization air hose protrudes into deashing bellows, between card and deashing bellows cover board；Rotation valve body is respectively communicated with only
Gas chamber, deashing bellows and pressurization air hose, when rotary valve is in filtration condition, cutting connection pressurization air hose, the gas after sock filtration
Body enters air-purifying chamber after deashing bellows, valve body, when rotary valve is in deashing state, cutting connection air-purifying chamber, and purge gas warp
Enter deashing bellows after being pressurized air hose, valve body.
Advantages of the present invention and generate the utility model has the advantages that
1, compared with prior art, the present invention since filter bag is in tensioning state, along with deashing stream pressure keeps steady
Fixed and pressure is lower, and filter bag is accomplished stationary when deashing.In this way, almost without being damaged, filter bag makes filter bag when deashing
It obtains improving significantly with the service life.Meanwhile when deashing with the stable deashing air-flow of low pressure instead of the arteries and veins of prior art medium-high frequency
Dynamic blowback air-flow simplifies equipment, reduces the cost, and mention accordingly, it is possible to omit the device of the pulsating back-blowing air-flow of manufacture high frequency
High equipment reliability of operation.
2, the deashing mechanism that the present invention designs, is cooperatively opened and closed by Filter valve and deashing valve to realize
Switching between the filtration condition and deashing state of each deashing locellus, when any one deashing sub-room cleaning, will not be to other
The filtering of deashing locellus has an impact, and has simple in structure, good airproof performance, reconciles and is easy, and failure rate is low, and equipment cost is lower,
Conducive to maintenance, easy to operate feature.
3, the center of Rose Box is the installation site of each room deashing mechanism, in this way for the cloth bag number of two sides deashing
Amount be it is identical, position be it is identical, air-flow be for the effect of two sides it is balanced, ash-removal effect be also it is essentially the same, this
Sample is also essentially identical to the efficiency of deashing, and effect is far longer than side ash-removal effect.
4, common valve two sides have the flange frame for reinforcing intensity and door surrounding to inlay flexible sealing heat-resisting material, pole
Valve air-tightness is improved greatly.
5, the present invention is blown into the blowback air-flow of pressure remained steady into filter bag；It is cut off after predetermined hold-time above-mentioned anti-
Blowing gas stream guarantees that filter bag is injury-free in deashing, and ash-removal effect is greatly improved and effectively prevents filter bag plate
Knot.
Detailed description of the invention
Fig. 1 is rotating switching type air-flow bag type dust-remover structural front view,
Fig. 2 is deashing mechanism partial side view.
Fig. 3 is rotary valve structure schematic diagram.
Fig. 4 is rotary valve scheme of installation.
Fig. 5 is rotary valve filtration condition schematic diagram.
Fig. 6 is rotary valve deashing status diagram.
Fig. 7 is rotary valve valve board structure figure.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings, it should be understood that content described herein is merely to illustrate
It is of the invention with explaining, it is not intended to limit the present invention.
Please refer to Fig. 1.The figure is rotating switching type air-flow bag type dust-remover structural front view of the present invention.
As shown in Figure 1, the sack cleaner includes cabinet, cabinet is usually made of metal material.The lower part of cabinet by
Bracket support, bracket is usually steelframe.Flue-dust retainer is arranged in the bottom of cabinet, and flue-dust retainer is either one or more.
Card is horizontally arranged in box house, and card opens up multiple plate holes.Card is fixedly connected with multiple filter bags.Filter bag is tool
The flat bag of two parallel side walls, and being arranged in cabinet in matrix form, the corresponding two side walls of two neighboring filter bag
Between formed towards the channel of air inlet.Washer is equipped between the sack and card of filter bag.Washer can specifically select and filter bag
Identical material.Further washer can be fixedly connected with the sack of filter bag, for example the two is stitched into one.Pressing device
The sack of filter bag and washer are pressed abd fixed on to the edge of card plate hole by sack blank holder.Inserting makes filter bag inside filter bag
The bag cage of tensioning, bag cage have high density supporting point.Specifically, the weight of bag cage can all be undertaken by filter bag；It can also be by
Card and filter bag shared.
Cabinet is separated into upper and lower two chambers by card and filter bag, and what it is positioned at lower part is dust and gas room, and superposed is net
Gas chamber.The outer surface of filter bag is towards dust and gas room, and inner surface is towards air-purifying chamber.Air inlet and outlet are further opened up on cabinet
Mouthful, air inlet is connected to dust and gas room, and gas outlet is connected to air-purifying chamber.
The sack cleaner further comprises rotary valve air-flow deashing mechanism, for carrying out gas to the sack cleaner
Flow reverse gas cleaning.
Deashing mechanism includes booster fan, deashing bellows and several rotary valves.Booster fan is set to peace on the outside of deduster
On the fan platform of dress, booster fan air inlet is by taking air hose to connect air-purifying chamber, using flue gas after purification as blowback gas source,
Booster fan air outlet connection pressurization air hose.Pressurization air hose is installed on card central axial line, in pressurization air hose two sides on card
Region opens up multiple plate holes.Pressurization air hose section is rectangle, one end closing, other end connection booster fan air outlet, pressurization
Blower provides pressure stable deashing air-flow, and the pressure of the deashing air-flow is slightly above the pressure of dusty gas in dust and gas room.
Pressurization air hose be also mountable in card side edge, correspondingly, on card pressurization one side region of air hose open up it is more
A plate hole.
Deashing bellows cover board is installed above card, installation site is higher than pressurization air hose upper surface, by deashing bellows lid
Plate, deduster side wall, card constitute deashing bellows.
Between deashing bellows cover board and card can vertically-mounted several partitions, constitute several independent deashing locellus, it is independent clear
Grey locellus is using card as bottom plate, and the partition to be vertically fixedly connected on card is side wall, is top with deashing bellows cover board
Plate.Each independent deashing locellus can carry out reverse gas cleaning operation for several filter bags covered.
Each independent deashing locellus is furnished with corresponding rotary valve, and rotary valve includes actuating mechanism, rotary shaft, valve plate, valve body.
As shown in figure 3, valve body is square box structure, valve body bottom surface aperture is equipped with rotation at one vertical side edge
Shaft, rotary shaft lower end are equipped with rectangle valve plate.The side A of the adjacent two sides of rotary shaft, side B Zhuo aperture, in rotating side
Aperture and rectangle valve plate cooperation realize valve sealing structure, rotary shaft work when carry out 90 degree rotate, valve plate can respectively with side
A, the aperture of side B is sealed.
Also there is pressurization wind branch pipe, pressurization wind branch pipe is square box structure, and bottom surface aperture is simultaneously installed on pressurization wind
Top surface on pipe, one side surface upper part aperture cooperate with side of valve body A osseotomy site and install.It will be increased using pressurization wind branch pipe
Blowback air conductance in pressure ventilation pipe is to valve body.
As shown in figure 4, valve body is installed on deashing bellows cover board, and deashing bellows cover board is equipped with when rotary valve is installed
Aperture, the aperture of valve body bottom surface and deashing bellows cover board osseotomy site, which cooperate, to be installed.After the installation is completed, valve body bottom surface is opened
Lead to deashing locellus in hole, and air-purifying chamber is led in side of valve body B aperture.
Side A aperture is filtering valve opening, and side B aperture is deashing valve opening.When valve opening is filtered in valve plate rotatory sealing, closing
It is pressurized wind branch pipe, opens air-purifying chamber outlet, air-flow by valve body enters air-purifying chamber, work after filtering in valve body lower portion deashing locellus
Make in filtration condition.When valve plate rotatory sealing deashing valve opening, the outlet of closing air-purifying chamber opens pressurization wind branch pipe, is pressurized wind branch
Blowback air stream enters deashing locellus by valve body in pipe, works in deashing state.
Round or rectangle can be used in valve, valve opening.Corresponding valve body can carry out structural adjustment change, and pressurization wind branch pipe can be adopted
With other shapes fitting structure.
Actuating mechanism is using electric power, magnetic force, a variety of driving methods such as pneumatically or hydraulically.
Actuating mechanism connection rotary shaft carries out rotation driving, and it is fixed that rotary shaft install by upper end support and lower end support
Position, the rotary shaft other end connect valve plate shaft.
When rotary shaft is connect with valve plate shaft, using coaxial sleeve structure, rotary shaft end is hollow to be placed on outside valve plate shaft,
And it is fixed using lock-screw.The purpose is to be used to adjust valve plate position of a rotary switch state.
The intermediate position of valve plate is equipped with flange frame, and left and right sides surrounding inlays flexible sealing strip, respectively with filtering valve opening,
Deashing valve opening is sealed cooperation, and one vertical side edge of valve plate installs valve plate shaft.
Deflector is put in deashing locellus in deashing mechanism, the blowback air-flow of entrance is uniformly distributed.Pass through deflector
Keep the wind come in distribution more reasonable, the wind for averagely arriving each cloth bag is balanced, and ash-removal effect is more preferable.
The present invention usually only needs a booster fan to provide blowback air-flow for multiple deashing locellus, may be alternatively provided as multiple
The corresponding one or more pressurization air hoses of booster fan, and multiple booster fan air outlets are connected by liaison tube, liaison tube is equipped with
Shutoff valve opens shut-off valve when wherein certain booster fan exception, other booster fans can replace abnormal booster fan,
Will not the filtering deashing to other locellus have an impact.
The deashing air-flow that deashing mechanism provides is the stable air-flow of low pressure, and the stable air-flow of the low pressure penetrates inside filter bag
Filter bag flows to dust and gas room.
When the sack cleaner is in filtration condition, in the case where being located at the drainage of air-introduced machine of gas outlet, entirely
It is in negative pressure state inside deduster.Filtered airflow comprising grit enters dust and gas room from air inlet under atmospheric pressure.
Grit when filter bag by the outer surface of filter bag through being stopped, and the filtered airflow for eliminating grit then enters in filter bag, and then enters
Air-purifying chamber.It collects in by the clean gas of each sock filtration and is flowed out in air-purifying chamber and then from gas outlet.That is filtered airflow
Flow path be to enter air-purifying chamber by air inlet to dust and gas room, then through filter bag, finally flowed out from gas outlet.Thus realize
Filtering to dusty gas.
When the sack cleaner needs deashing, the deashing mechanism executes movement, to the filter bag for needing to carry out deashing
Inside it is blown into the stable deashing air-flow of the low pressure of predetermined hold-time.The predetermined time specifically can be 8 seconds to 18 seconds.It is described clear
The pressure of grey air-flow is slightly above the pressure of dusty gas in dust and gas room, and the pressure difference of the two specifically can be 2000 pas to 10000
Pa.After the blowback air-flow penetrates the filter bag in tensioning state, formed between the dust layer and filter layer of cloth of filter bag outer surface
One gasification layer, and destroy adhesion strength between the two.The dust layer of filter bag outer surface immediately under the effect of gravity to
Downslide drops down onto flue-dust retainer.
Sack cleaner of the present invention is compared with the sack cleaner of the prior art, since filter bag is in tensioning state, then plus
Upper deashing stream pressure keeps stablizing and pressure is lower, and filter bag is accomplished stationary when deashing.In this way, filter bag does not almost have when deashing
It is damaged, the service life of filter bag obtains improving significantly.Meanwhile when deashing with the stable deashing air-flow of low pressure instead of
The pulsating back-blowing air-flow of prior art medium-high frequency, therefore the device of the pulsating back-blowing air-flow of manufacture high frequency can be omitted, simplify
Equipment reduces the cost, and improves equipment reliability of operation.
As shown in figure 5, when the sack cleaner is in filtration condition, when valve plate rotatory sealing side A filters valve opening,
Pressurization wind branch pipe is closed, air-purifying chamber is opened and exports, air-flow passes through valve body into net gas after filtering in valve body lower portion deashing locellus
As shown in fig. 6, booster fan, which automatically turns on, carries out air-flow deashing when pressure difference reaches setting deashing pressure difference.It is described
When sack cleaner deashing, when the B deashing valve opening of valve plate rotatory sealing side, the outlet of closing air-purifying chamber is opened pressurization wind branch pipe, is increased
Blowback air stream enters deashing locellus by valve body in pressure wind branch pipe, works in deashing state.It thereby realizes to the pocket type
The deashing locellus of deduster corresponds to filter bag ash removal.
Deashing mechanism in the present invention realizes the two phase using same changeover valve complement filter valve opening and deashing valve opening
Ordinatedly open or close.Realize the switching between the filtration condition and deashing state of each deashing locellus,
Deashing locellus is mutually isolated, independent operation, when any one deashing sub-room cleaning will not be to other deashing locellus
Filtering have an impact, structure is simple, operation also facilitate.
It can also be by the outlet of pressurization air hose and the air-introduced machine for connecting air outlet in above-mentioned deashing mechanism.It connects out
The pressure of the purified gas in the exit of the air-introduced machine in air port can also be used as the gas of deashing air-flow in slightly above atmospheric pressure
Source.Simultaneously as from the temperature of the purified gas of air-introduced machine outlet outflow and the temperature of the inside of bag type dust collector gas
Spend it is essentially identical, so not needing separately to set heating device.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely explanation of the invention, although to this hair
It is bright to be described in detail, it for those skilled in the art, still can be to aforementioned documented technical solution
It modifies or equivalent replacement of some of the technical features.All within the spirits and principles of the present invention, made
Any modification, equivalent substitution, improvement and etc. should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of rotating switching type air-flow bag type dust-remover, including cabinet and rotating switching type air-flow deashing mechanism；Cabinet
Card is arranged in internal water level land；Card connects multiple filter bags；Cabinet is separated into upper and lower two chambers by card and filter bag, is located at
Lower part is dust and gas room, and superposed is air-purifying chamber；It is characterized in that, deashing mechanism include booster fan, deashing bellows and
Rotary valve；Booster fan air inlet connects air-purifying chamber, booster fan air outlet connection pressurization air hose；Deashing is installed above card
Bellows cover board, installation site are higher than top surface on pressurization air hose, constitute deashing by deashing bellows cover board, deduster side wall, card
Bellows；Pressurization air hose protrudes into deashing bellows, between card and deashing bellows cover board；Rotation valve body is respectively communicated with net gas
Room, deashing bellows and pressurization air hose, when rotary valve is in filtration condition, cutting connection pressurization air hose, the gas after sock filtration
Enter air-purifying chamber after deashing bellows, valve body, when rotary valve is in deashing state, cutting connection air-purifying chamber, purge gas is through increasing
Enter deashing bellows after pressure ventilation pipe, valve body.
2. rotating switching type air-flow bag type dust-remover as described in claim 1, it is characterised in that: deashing bellows cover board with
Several partitions are installed between card, constitute several independent deashing locellus, independent deashing locellus with partition is using card as bottom plate
Side wall, using deashing bellows cover board as top plate；Each independent deashing locellus is furnished with corresponding rotary valve；Each independent deashing locellus can
Reverse gas cleaning operation is carried out for the filter bag covered.
3. rotating switching type air-flow bag type dust-remover as described in claim 1, it is characterised in that: pressurization air hose is installed on
On card central axial line, multiple plate holes are opened up in pressurization air hose two side areas on card；Alternatively, pressurization air hose is installed on card side
On edge, multiple plate holes are opened up in pressurization one side region of air hose on card.
4. rotating switching type air-flow bag type dust-remover as described in claim 1, it is characterised in that: rotation valve body installation
Above deashing bellows cover board, rotation valve body passes through pressurization wind branch pipe connection pressurization air hose.
5. rotating switching type air-flow bag type dust-remover as described in claim 1, it is characterised in that: rotation valve body uses
Square box structure, valve body bottom surface aperture, for connecting deashing bellows；Vertical rotary is installed at one vertical side edge
Axis, rotary shaft lower end are equipped with valve plate；Equal aperture in the adjacent first side of rotary shaft, second side, aperture are matched with valve plate
It closes and realizes valve sealing structure, 90 degree are carried out when rotary shaft works and is rotated, valve plate can be opened with first side, second side respectively
Hole is sealed.
6. rotating switching type air-flow bag type dust-remover as claimed in claim 5, it is characterised in that: first side aperture is
Deashing valve opening, for leading to air-purifying chamber；Second side aperture is filtering valve opening, for connecting pressurization air hose；Valve plate sealing filtering
When valve opening, rotary valve is in filtration condition, and when valve plate seals deashing valve opening, rotary valve is in deashing state.
7. rotating switching type air-flow bag type dust-remover as described in claim 1, it is characterised in that: the increasing in deashing mechanism
Pressure fan, deashing bellows and rotary valve are spliced to form by blank assemblies.
8. rotating switching type air-flow bag type dust-remover as described in claim 1, it is characterised in that: rotary valve includes movement
Mechanism, rotary shaft and valve plate；Actuating mechanism is installed on top cover of box, and rotary shaft is positioned by support, rotary shaft lower end
Connect valve plate.
9. rotating switching type air-flow bag type dust-remover as claimed in claim 6, it is characterised in that: valve plate, valve opening use
Round or rectangle.
10. rotating switching type air-flow bag type dust-remover as claimed in claim 8, it is characterised in that: rotary shaft and valve plate
When shaft connects, using coaxial sleeve structure, rotary shaft end is hollow to be placed on outside valve plate shaft, and is fixed using lock-screw,
For adjusting valve plate position of a rotary switch state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811010634.XA CN108993038B (en) | 2018-08-31 | 2018-08-31 | Rotary switching type air flow ash removal bag type dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811010634.XA CN108993038B (en) | 2018-08-31 | 2018-08-31 | Rotary switching type air flow ash removal bag type dust collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108993038A true CN108993038A (en) | 2018-12-14 |
| CN108993038B CN108993038B (en) | 2021-03-30 |
Family
ID=64590699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811010634.XA Expired - Fee Related CN108993038B (en) | 2018-08-31 | 2018-08-31 | Rotary switching type air flow ash removal bag type dust collector |
Country Status (1)
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| CN (1) | CN108993038B (en) |
Cited By (5)
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| CN109603336A (en) * | 2019-02-20 | 2019-04-12 | 北京博电兴源节能科技有限公司 | A kind of turning valve core type air-flow bag type dust-remover |
| CN113069845A (en) * | 2021-04-30 | 2021-07-06 | 诸城万通铸造装备工程有限公司 | Offline back-blowing type dust remover |
| CN113710134A (en) * | 2020-03-18 | 2021-11-26 | 苏州欧圣电气股份有限公司 | Dust collector |
| CN113941199A (en) * | 2021-05-19 | 2022-01-18 | 重庆工程职业技术学院 | Back-blowing structure for cloth bag dust removal and cloth bag dust removal device |
| CN118718567A (en) * | 2024-08-27 | 2024-10-01 | 合肥水泥研究设计院有限公司 | Dust removing device and process for cement production |
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| CN113069845A (en) * | 2021-04-30 | 2021-07-06 | 诸城万通铸造装备工程有限公司 | Offline back-blowing type dust remover |
| CN113941199A (en) * | 2021-05-19 | 2022-01-18 | 重庆工程职业技术学院 | Back-blowing structure for cloth bag dust removal and cloth bag dust removal device |
| CN113941199B (en) * | 2021-05-19 | 2023-06-20 | 重庆工程职业技术学院 | Back-blowing structure for bag-type dust removal and bag-type dust removal device |
| CN118718567A (en) * | 2024-08-27 | 2024-10-01 | 合肥水泥研究设计院有限公司 | Dust removing device and process for cement production |
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| CN108993038B (en) | 2021-03-30 |
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