CN103157561B - Wet type multicyclone and the dust pelletizing system with above-mentioned deduster - Google Patents
Wet type multicyclone and the dust pelletizing system with above-mentioned deduster Download PDFInfo
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- CN103157561B CN103157561B CN201310083847.6A CN201310083847A CN103157561B CN 103157561 B CN103157561 B CN 103157561B CN 201310083847 A CN201310083847 A CN 201310083847A CN 103157561 B CN103157561 B CN 103157561B
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Abstract
The invention provides a kind of wet type multicyclone and the dust pelletizing system with above-mentioned deduster, belong to technical field of operation.It solve the problem that existing wet type multicyclone efficiency of dust collection is low.This wet type multicyclone, comprise multi-cyclone dedusting assembly, this deduster also comprises water tank, and described multi-cyclone dedusting assembly is positioned at above water tank, the Whirlwind cyclone dust-exhausting port of described multi-cyclone dedusting assembly is all serially connected with dust flue, and described dust flue penetrates in water tank; The air inlet of described multi-cyclone dedusting assembly is serially connected with blast pipe, and described blast pipe internal fixtion has the spray head of energy atomized water spray.This wet type multicyclone adopts and sprays in blast pipe, improves spray and the spacing of Whirlwind cyclone, ensures that water smoke fully can mix with air, improves clean-up effect and effectively reduces the temperature of high temperature air; Avoid spray stream on the impact entering Whirlwind cyclone air-flow smoothness simultaneously.
Description
Technical field
The invention belongs to technical field of operation, relate to a kind of deduster, particularly a kind of wet type multicyclone.
The invention belongs to technical field of operation, relate to a kind of deduster, particularly a kind of dust pelletizing system with above-mentioned wet type multicyclone.
Background technology
Deduster is removing or the equipment reducing fly ash content in flue gas.Deduster is facility conventional in boiler and industrial production.Deduster is divided into following five classes by its action principle: (1) mechanical precipitator comprises gravitational precipitator, inertial dust separator, centrifugal deduster etc.(2) Washing dust remover comprises water-bath type dust cleaner, foam type deduster, venturi tube duster, water film type duster etc.(3) filtration dust catcher comprises sack cleaner and gravel bed filter etc.(4) electrostatic precipitator.(5) magnetic dust collector.Deduster is divided into according to dedusting method: (1) dry collector.(2) half dry type deduster.(3) wet scrubber.
Pertinent literature about deduster is more, a kind of Wet method cyclone multi-duct dust collector [application number 200420108346 disclosed in Chinese patent literature; Notification number CN2732356Y], comprise smoke-intake pipe, casing, Whirlwind cyclone, dust removing tube, wireway, clarifier-tank etc.This deduster is used for the smoke abatement and dust control of coal-burning boiler, the flue dust that boiler produces is entered the dust arrester of this deduster by smoke-intake pipe, under the effect of recirculated water spray system, flue dust through sprayer spray after, under peripheral hardware air-introduced machine graviational interaction, pass through Whirlwind cyclone, flue dust defines vaporization moisture film, gets rid of rapidly to dust removing tube tube wall, then fall into clarifier-tank under centrifugal action, make soot dust granule and pernicious gas be blended in water, obtain sufficient separation, purified treatment.Separation, purified gas enter plenum chamber through the sideshake of point water plate by wireway, due to the effect of stabilier, make purified gas not water content, discharge, discharge into the atmosphere through induced duct.Although above-mentioned deduster can realize dedusting, but there is many defects: 1, spray is that spray cleaning room in casing is carried out, and the spray stream of sprayer ejection has stronger flow velocity, therefore causes the air turbulence of spray cleaning indoor; Cause the air-flow that enters in Whirlwind cyclone also unstable, and then affect dust removing effects.Meanwhile, because Whirlwind cyclone is also positioned at spray cleaning indoor, cause part directly to enter in Whirlwind cyclone without the gas of fully washing, namely cause the harmful poisonous gas in flue gas not to be sufficiently purified and to reduce flue-gas temperature amplitude little.2, the agent for fixing in casing, although fixed by Whirlwind cyclone, forms plane at Whirlwind cyclone and between Whirlwind cyclone and wall box, and comparatively coarse; Dust is caused to be piled up at plane place; And then can air velocity and service life etc. be reduced.3, because the lower port of dust removing tube and wireway is all between agent for fixing and clarifier-tank horizontal plane, be separated the Chi Shuizhong that the water that obtains and dust directly can not enter clarifier-tank thus, and discharged by wireway, namely there is the problem that efficiency of dust collection is low.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of wet type multicyclone, the present invention solves the low problem of efficiency of dust collection.
The invention allows for a kind of dust pelletizing system with above-mentioned wet type multicyclone; The present invention solves the low problem of efficiency of dust collection.
Object of the present invention realizes by following technical proposal: a kind of wet type multicyclone, comprise multi-cyclone dedusting assembly, it is characterized in that, this wet type multicyclone also comprises water tank, described multi-cyclone dedusting assembly is positioned at above water tank, the Whirlwind cyclone dust-exhausting port of described multi-cyclone dedusting assembly is all serially connected with dust flue, and described dust flue penetrates in water tank; The air inlet of described multi-cyclone dedusting assembly is serially connected with blast pipe, and described blast pipe internal fixtion has the spray head of energy atomized water spray.
Utilize this wet type multicyclone to purify air, blast pipe is connected with dust gathering arrester; Water tank internal memory discharges water, and makes the water surface higher than the lower nozzle of dust flue; The exhaust outlet of multi-cyclone dedusting assembly is connected with blower fan, and air can be entered from air inlet, through Whirlwind cyclone, then discharges from exhaust outlet.Spray head is connected with water-supply structure, and the water fed in spray head sprays with water smoke form.
Enter from blast pipe containing the air such as dust and cigarette, water smoke contacts with air, and the water smoke sprayed into can cool air cooling-down, increase humidity and purify the effects such as harmful poisonous gas.Then, air and water smoke mixture enter in each Whirlwind cyclone, and the overwhelming majority of air-flow along wall from cylinder twist downwards, flow towards cone; Gas containing dust and water smoke produces centrifugal force in rotary course, and the dust and the water smoke that relative density are greater than gas get rid of to wall; Dust once contact with wall, just loses radial inertial force and momentum under being close to and downward gravity fall along wall with water smoke, and enter in ash releasing tube and water tank, dust is deposited on water tank bottom surface gradually.When rotating the outward turning gas arrival cone declined, draw close to whirlwind collector center because of conical contraction; According to " spin moment " invariance principle, its tangential velocity improves constantly, and suffered by dust and water smoke, centrifugal force is also constantly strengthened; When air-flow arrives a certain position, cone lower end, namely with same direction of rotation in the middle part of whirlwind collector, by lower counter steer, continue the flowing of spinning property, rotational gas flow namely; The dust of last part collection at large is also discharged thus.
In order to saving water resource and minimizing sewage quantity, so arrange water pump, the water circulation in this deduster is used.Namely, in above-mentioned wet type multicyclone, described wet type multicyclone also comprises water pump, and the water inlet pipe of water pump is connected with water tank cavity; All spray heads are all connected with the outlet pipe of water pump.
In above-mentioned wet type multicyclone, described blast pipe internal fixtion has at least 2 spray heads.In order to make water smoke and air fully contact with each other, so should arrange multiple spray head, all spraying material heads also can divide multilayer to arrange.
The lower nozzle of dust flue is near water tank bottom surface, and water tank is covered with by dust flue substantially, therefore causes the dust of sedimentation to be difficult to cleaning.In above-mentioned wet type multicyclone, described dust flue comprises the base tube and detachable pipe that are arranged in series, and described base tube and the cone of Whirlwind cyclone are connected; Described detachable pipe and base tube are fixedly connected with by screw thread or grafting is fixedly connected with.Unloaded by detachable pipe during cleaning dust, the instrument such as scoop directly can stretch in water tank and be dug out by sedimentation ground dust thus, namely effectively increases the activity space of the instruments such as scoop, conveniently knows the dust of sedimentation.
In order to purify discharge air-flow further, in above-mentioned wet type multicyclone, the exhaust outlet of described multi-cyclone dedusting assembly is serially connected with the dewater unit that can purify water smoke; Described dewater unit has drainpipe, and described drainpipe is connected with water tank.
In above-mentioned wet type multicyclone, described dewater unit is dewatering centrifuge or folded plate type dehydrator.
In above-mentioned wet type multicyclone, described exhaust outlet is the uncovered of multi-cyclone dedusting assembly end face, air-inlet cavity and the air draft chamber of described multi-cyclone dedusting assembly adopt swash plate to separate, described dewater unit is positioned at the top of multi-cyclone dedusting assembly, dewatering cavity and the air draft chamber of described dewater unit are through, and described drainpipe is connected with the lowest part in air draft chamber.Because air-inlet cavity and air draft chamber adopt swash plate to separate, therefore there is the advantage entering the equilibrium of Whirlwind cyclone air velocity; Make air draft chamber bottom angled arrange simultaneously, have water guiding action, the water depart from dewater unit and the water condensed in air draft chamber are back in water tank by drainpipe in the lump, avoid water resource waste.
After exhaust outlet place tandem dehydration device, then accelerate a small amount of pollutant sedimentation, the especially grease on bottom surface, air draft chamber that are not purified by Whirlwind cyclone; If remove not in time, can sidewall be corroded, cause this deduster to reduce service life.So in above-mentioned wet type multicyclone, described air draft chamber sidewall has service port one, described air draft chamber lateral wall is fixedly connected with the cover plate one of the above-mentioned service port one of capping.By service port one observable air draft chamber internal contamination thing settling amount and more easily carry out removing operation.
In above-mentioned wet type multicyclone, described blast pipe sidewall has service port two, described blast pipe lateral wall is fixedly connected with the cover plate two of the above-mentioned service port two of capping.People can be changed the spray head in blast pipe by service port two according to actual condition, and the parameters such as the water smoke amount of spray and droplet size are determined accordingly according to the pollutant contained in the intake of reality and air; The highest to ensure the efficiency of dust collection of deduster.
There is a dust pelletizing system for above-mentioned wet type multicyclone, it is characterized in that, comprise the cyclone dust collectors of connecting successively along air current flow direction, above-mentioned wet type multicyclone and blower fan.
Have in the dust pelletizing system of above-mentioned wet type multicyclone above-mentioned, below the dust-exhausting port of described cyclone dust collectors, be serially connected with dust compartment; Be provided with oil-collecting fat bucket in described dust compartment, described dust compartment sidewall have and picks and places mouth, described dust compartment lateral wall is provided with the cover plate three that capping picks and places mouth.
Compared with prior art, this wet type multicyclone adopts and sprays in blast pipe, improves spray and the spacing of Whirlwind cyclone, ensures that water smoke fully can mix with air, improves clean-up effect and effectively reduces the temperature of high temperature air; Avoid spray stream on the impact entering Whirlwind cyclone air-flow smoothness simultaneously.
The dust flue of this wet type multicyclone directly inserts in the water of water tank, and water by the shutoff of dust flue lower end, can ensure the normal dedusting of deduster, isolated water and dust can be made again to mix in time thus, avoids generation again sucked back; Water tank is again the tank of recirculated water simultaneously.
The dust pelletizing system originally with above-mentioned wet type multicyclone first adopts cyclone dust collectors to carry out pretreatment, effectively reduces entering koniology content in wet type multicyclone; And then ensure that wet type multicyclone is in efficient operation; And ensure overall dust removal efficiency.
Accompanying drawing explanation
Fig. 1 is the perspective view of this wet type multicyclone.
Fig. 2 is the perspective view at another visual angle of this wet type multicyclone.
Fig. 3 is the sectional structure schematic diagram of this wet type multicyclone.
Fig. 4 is the perspective view after the parts such as casing and water tank removed by this wet type multicyclone.
Fig. 5 is the perspective view of Whirlwind cyclone in this wet type multicyclone.
Fig. 6 is the sectional structure schematic diagram of Whirlwind cyclone in this wet type multicyclone.
Fig. 7 is the perspective view of the dust pelletizing system originally with above-mentioned wet type multicyclone.
In figure, 1, multi-cyclone dedusting assembly; 1a, air-inlet cavity; 1b, air draft chamber; 1c, casing; 1d, Whirlwind cyclone; 1d1, cylindrical shell; 1d2, cone; 1d3, blast pipe; 1d4, wind deflector; 1e, swash plate; 1f, lead dirt cone; 2, water tank; 3, dust flue; 3a, base tube; 3b, detachable pipe; 4, blast pipe; 4a, diffuser; 4b, bending segment; 5, spray head; 6, outlet pipe; 7, screen pack bucket; 8, folded plate type dehydrator; 8a, drainpipe; 8b, dewatering cavity; 9, service port one; 10, cover plate one; 11, service port two; 12, cover plate two; 13, cyclone dust collectors; 14, wet type multicyclone; 15, blower fan; 16, dust compartment.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figures 1 to 4, this wet type multicyclone 14, comprises multi-cyclone dedusting assembly 1, water tank 2, dust flue 3, blast pipe 4 and spray head 5.
Specifically, multi-cyclone dedusting assembly 1 comprises the casing 1c with air-inlet cavity 1a and air draft chamber 1b, the some groups of Whirlwind cyclone 1d being positioned at casing 1c.As shown in Figure 4, the Whirlwind cyclone 1d quantity that this Figure of description provides is 8, and point two row are arranged.
As shown in Figure 3, air draft chamber 1b is positioned at above air-inlet cavity 1a, and air draft chamber 1b and air-inlet cavity 1a adopts swash plate 1e to separate.More particularly, Whirlwind cyclone 1d is screw type Whirlwind cyclone 1d or petal-shaped Whirlwind cyclone 1d.The cone 1d2 that Whirlwind cyclone 1d is connected with cylindrical shell 1d1 lower port by cylindrical shell 1d1 and cylindrical shell 1d1 concentric are arranged and lower end penetrates the blast pipe 1d3 of cylindrical shell 1d1 upper end and the wind deflector 1d4 between blast pipe 1d3 outer wall and cylindrical shell 1d1 inwall forms.As shown in Figure 5, the quantity of wind deflector 1d4 is four, and is uniformly distributed along blast pipe 1d3 circumference, and wind deflector 1d4 is arranged along blast pipe 1d3 spiral simultaneously.
Cylindrical shell 1d1 can be fixed on casing 1c, and blast pipe 1d3 upper end to extend in the 1b of air draft chamber through air-inlet cavity 1a and blast pipe 1d3 and dividing plate are connected.
As shown in Figures 3 to 6, be provided with bottom air-inlet cavity 1a and lead dirt one to one with Whirlwind cyclone 1d and bore 1f; The portlet leading dirt cone 1f is positioned at below; Lead dirt cone 1f portlet connect with cylindrical shell 1d1 upper port and be fixedly connected with.Lead the rectangular shape of large port of dirt cone 1f, lead the large port edge of dirt cone 1f and adjacently lead that the large port edge that dirt bores 1f leans or leans with casing 1c medial surface, joint seal and being fixedly connected by welding.Thus, the material such as dust and water can only directly fall in cylindrical shell 1d1 or drop on lead dirt cone 1f inclined-plane on; The material dropped on the inclined-plane of leading dirt cone 1f just automatically glides and falls in cylindrical shell 1d1 after accumulation is a certain amount of; Namely effectively avoid the material such as dust and water to pile up between Whirlwind cyclone 1d and Whirlwind cyclone 1d and casing 1c sidewall, improve the service life of this device.
Multi-cyclone dedusting assembly 1 is positioned at above water tank 2, and casing 1c and the water tank 2 of multi-cyclone dedusting assembly 1 are connected.
The quantity of dust flue 3 and position are all arranged with the Whirlwind cyclone 1d one_to_one corresponding of multi-cyclone dedusting assembly 1; Dust flue 3 is positioned at below Whirlwind cyclone 1d, and dust flue 3 is connected in series with dust-exhausting port.Dust flue 3 penetrates in water tank 2, and in general, the lower nozzle of dust flue 3 is near water tank 2 bottom surface.In order to the dust (mud) of more convenient cleaning sedimentation, dust flue 3 comprises the base tube 3a and detachable pipe 3b that are arranged in series, and the cone 1d2 of base tube 3a and Whirlwind cyclone 1d is connected; Detachable pipe 3b and base tube 3a are fixedly connected with by screw thread or grafting is fixedly connected with.When this deduster need run, detachable pipe 3b is fixedly connected with base tube 3a; When need remove mud, detachable pipe 3b is unloaded from base tube 3a.
The air inlet of multi-cyclone dedusting assembly 1 is positioned on the side of air-inlet cavity 1a maximum area, and air inlet is serially connected with blast pipe 4, and spray head 5 is positioned at blast pipe 4; The water that press water sprays after spray head 5 is vaporific.In order to improve the degree of mixing of water smoke and air, blast pipe 4 has vertical section, and spray head 5 is positioned at vertical section.More particularly, width and the casing 1c width of air inlet adapt, and namely the staving upper port of Whirlwind cyclone 1d is all positioned at air inlet view field; Blast pipe 4 is followed successively by diffuser 4a and the bending segment 4b identical with air inlet width from import to outlet; Two spray heads 5 are at least set in diffuser 4a; Through overtesting, this structure ensures degree of mixing effectively.This Figure of description, arranges two spray heads 5 in diffuser 4a, arranges three spray heads 5 in bending segment 4b.
This deduster also comprises water pump, the water inlet pipe of water pump and water tank 2 intracavity inter-connection; All spray heads 5 are all connected with the outlet pipe 6 of water pump.In order to avoid the water inlet pipe of mud blocking water pump, in water tank 2, arrange screen pack bucket 7, water inlet pipe is placed in screen pack bucket 7.In water tank 2, there is lack of water phenomenon, water tank 2 is connected with automatic water replenishing structure; As being connected with water tank 2 with ball-cock assembly by running water pipe.
In order to purify discharge air-flow further, especially avoiding steam to discharge and causing secondary pollution; The dewater unit that can purify water smoke is serially connected with at the exhaust outlet of multi-cyclone dedusting assembly 1; Dewater unit has drainpipe 8a, and drainpipe 8a is connected with water tank 2.Dewater unit is dewatering centrifuge or folded plate type dehydrator 8; Folded plate type dehydrator 8 as shown in Figure 3.
Dewater unit is positioned at the top of multi-cyclone dedusting assembly 1, and dewater unit is fixedly connected with the casing 1c of multi-cyclone dedusting assembly 1.Exhaust outlet is the uncovered of multi-cyclone dedusting assembly 1 end face, and dewatering cavity 8b and the air draft chamber 1b of dewater unit are through, and drainpipe 8a is connected with the lowest part of air draft chamber 1b.The isolated water of dewater unit is back in the 1b of air draft chamber thus, above-mentioned swash plate 1e makes air draft chamber 1b bottom angled arrange, tilt there is water guiding action, so the water depart from dewater unit and the water condensed in the 1b of air draft chamber are back in water tank 2 by drainpipe 8a in the lump, avoid water resource waste.The lower port of drainpipe 8a extends to below water tank 2 water surface.
In order to remove the dirt in the 1b of air draft chamber more easily, air draft chamber 1b sidewall having service port 1, air draft chamber 1b lateral wall being fixedly connected with the cover plate 1 of the above-mentioned service port 1 of capping.Simultaneously in order to safeguard more easily or change spray head 5, blast pipe 4 sidewall has service port 2 11, blast pipe 4 lateral wall is fixedly connected with the cover plate 2 12 of the above-mentioned service port 2 11 of capping.
As shown in Figure 7, a kind of dust pelletizing system with above-mentioned wet type multicyclone 14, comprises the cyclone dust collectors 13 of connecting successively along air current flow direction, above-mentioned wet type multicyclone 14 and blower fan 15.In order to the dust under more convenient removing cyclone dust collectors 13 purification, below the dust-exhausting port of cyclone dust collectors 13, be serially connected with dust compartment 16; Be provided with oil-collecting fat bucket in dust compartment 16, dust compartment 16 sidewall have and picks and places mouth, dust compartment 16 lateral wall is provided with the cover plate three that capping picks and places mouth.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. a wet type multicyclone, comprise multi-cyclone dedusting assembly (1), it is characterized in that, this wet type multicyclone also comprises water tank (2), described multi-cyclone dedusting assembly (1) is positioned at water tank (2) top, Whirlwind cyclone (1d) dust-exhausting port of described multi-cyclone dedusting assembly (1) is all serially connected with dust flue (3), and described dust flue (3) penetrates in water tank (2); The air inlet of described multi-cyclone dedusting assembly (1) is serially connected with blast pipe (4), and described blast pipe (4) internal fixtion has the spray head (5) of energy atomized water spray; The exhaust outlet of described multi-cyclone dedusting assembly (1) is the uncovered of multi-cyclone dedusting assembly (1) end face, air-inlet cavity (1a) and the air draft chamber (1b) of described multi-cyclone dedusting assembly (1) adopt swash plate (1e) to separate, and blast pipe (4) is followed successively by diffuser (4a) and the bending segment identical with air inlet width (4b) from import to outlet; Air-inlet cavity (1a) bottom is provided with leads dirt one to one with Whirlwind cyclone (1d) and bores (1f); Lead dirt cone (1f) portlet connect with cylindrical shell (1d1) upper port of Whirlwind cyclone (1d) and be fixedly connected with, lead the rectangular shape of large port of dirt cone (1f), lead the large port edge of dirt cone (1f) and adjacently lead that the large port edge that dirt bores (1f) leans or leans with casing (1c) medial surface of multi-cyclone dedusting assembly (1), joint seal.
2. wet type multicyclone according to claim 1, is characterized in that, described wet type multicyclone also comprises water pump, the water inlet pipe of water pump and water tank (2) intracavity inter-connection; All spray heads (5) are all connected with the outlet pipe (6) of water pump.
3. wet type multicyclone according to claim 1, is characterized in that, described blast pipe (4) internal fixtion has at least 2 spray heads (5).
4. the wet type multicyclone according to claim 1 or 2 or 3, it is characterized in that, described dust flue (3) comprises the base tube (3a) and detachable pipe (3b) that are arranged in series, and described base tube (3a) is connected with the cone (1d2) of Whirlwind cyclone (1d); Described detachable pipe (3b) and base tube (3a) are fixedly connected with by screw thread or grafting is fixedly connected with.
5. the wet type multicyclone according to claim 1 or 2 or 3, is characterized in that, the exhaust outlet of described multi-cyclone dedusting assembly (1) is serially connected with the dewater unit that can purify water smoke; Described dewater unit has drainpipe (8a), and described drainpipe (8a) is connected with water tank (2).
6. wet type multicyclone according to claim 5, is characterized in that, described dewater unit is dewatering centrifuge or folded plate type dehydrator (8).
7. wet type multicyclone according to claim 6, it is characterized in that, described dewater unit is positioned at the top of multi-cyclone dedusting assembly (1), the dewatering cavity (8b) of described dewater unit is through with air draft chamber (1b), and described drainpipe (8a) is connected with the lowest part of air draft chamber (1b).
8. wet type multicyclone according to claim 7, it is characterized in that, described air draft chamber (1b) sidewall has service port one (9), described air draft chamber (1b) lateral wall is fixedly connected with the cover plate one (10) of the above-mentioned service port one (9) of capping.
9. the wet type multicyclone according to claim 1 or 2 or 3, it is characterized in that, described blast pipe (4) sidewall has service port two (11), described blast pipe (4) lateral wall is fixedly connected with the cover plate two (12) of the above-mentioned service port two (11) of capping.
10. one kind has the dust pelletizing system of wet type multicyclone described in claim 1 to 9 any one, it is characterized in that, comprise the cyclone dust collectors (13) of connecting successively along air current flow direction, above-mentioned wet type multicyclone (14) and blower fan (15).
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| CN103949357A (en) * | 2014-05-07 | 2014-07-30 | 常熟市华能环保工程有限公司 | Efficient compound layered cyclone separator as well as compound layered multi-pipe deduster |
| KR101971778B1 (en) * | 2017-05-08 | 2019-04-23 | 엘지전자 주식회사 | cyclone for air cleaning and filtering module having the same |
| CN108295601B (en) * | 2018-03-06 | 2023-12-08 | 江苏鑫华能环保工程股份有限公司 | Dehydrator and high-efficiency water mist multi-pipe cyclone dust removal system |
| CN108579278A (en) * | 2018-07-10 | 2018-09-28 | 陈美青 | Wet-type spray deduster |
| CN110940183B (en) * | 2018-09-21 | 2024-05-28 | 湖北叶威（集团）粮油机械有限公司 | Grain drying-machine dust collector |
| CN109351496A (en) * | 2018-11-01 | 2019-02-19 | 广东保绿泰华生物能源有限公司 | A kind of multicyclone dust collector |
| CN111503805A (en) * | 2020-04-26 | 2020-08-07 | 宋鑫 | Intelligent ventilation device for integrated circuit factory building |
| CN117504503B (en) * | 2023-12-05 | 2024-05-03 | 江苏鑫华能环保工程股份有限公司 | Environment-friendly multitube dust remover |
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