CN107952325A - A kind of high efficiency is classified deduster - Google Patents
A kind of high efficiency is classified deduster Download PDFInfo
- Publication number
- CN107952325A CN107952325A CN201711175422.2A CN201711175422A CN107952325A CN 107952325 A CN107952325 A CN 107952325A CN 201711175422 A CN201711175422 A CN 201711175422A CN 107952325 A CN107952325 A CN 107952325A
- Authority
- CN
- China
- Prior art keywords
- dust
- water
- water tank
- cleaner body
- ash discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of high efficiency to be classified deduster, including the first ash discharge funnel, bag hose, cleaner body and the first water tank, the first ash discharge outlet is provided with below the first ash discharge funnel, first connecting tube is installed above the bag hose, the bottom of the cleaner body is provided with the second ash discharge outlet, sewage draining exit is provided with the left of first water tank, the second permselectivity membrane is installed on the right side of second water tank, the lower inside of the cleaner body is provided with lower dust-extraction unit, the inner upper of the cleaner body is provided with dust-extraction unit, motor is installed on the left of the water filling port, the upper right corner of the cleaner body is connected by the 3rd connecting tube with air pump.The high efficiency is classified deduster, has higher efficiency of dust collection, can quickly be removed the dust in dust and gas, and can be purified the pollution gas contained in dust, and the dust gone out can be effectively addressed, more environmentally friendly.
Description
Technical field
The present invention relates to deduster technical field, is specially a kind of high efficiency classification deduster.
Background technology
Deduster, is deduster or cleaner, the performance of deduster the equipment that dust is separated from flue gas
Drag losses and efficiency of dust collection during with accessible gas flow, gas by deduster are expressed, meanwhile, the valency of deduster
Lattice, operation and maintenance cost, the difficulty or ease of service life length and operational administrative are also deduster an important factor for considering its performance
It is common facility in boiler and industrial production.
Existing dust collector efficiency is low, it is impossible to the dust in dust and gas quickly removed, and the dust removed
Gas cannot be also purified containing some pollution gas, while the dust removed cannot be handled effectively, for the above situation,
Technological innovation is carried out on the basis of existing deduster.
The content of the invention
It is an object of the invention to provide a kind of high efficiency to be classified deduster, general to solve to propose in above-mentioned background technology
Dust collector efficiency it is low, it is impossible to the dust in dust and gas is quickly removed, and the gas of dust removed also contains one
The problem of a little pollution gas cannot purify, while the dust removed cannot be handled effectively.
To achieve the above object, the present invention provides following technical solution：A kind of high efficiency is classified deduster, including first row
Grey funnel, bag hose, cleaner body and the first water tank, the first ash discharge outlet is provided with below the first ash discharge funnel,
And first the both sides of ash discharge funnel be mounted on stent, dust and gas import is provided with the left of the bag hose, and bag hose is located at
The top of first ash discharge funnel, the first connecting tube, and the other end connection of the first connecting tube are provided with above the bag hose
There is the second connecting tube, the bottom of the cleaner body is provided with the second ash discharge outlet, and cleaner body is positioned at the second connection
The right side of pipe, sewage draining exit is provided with the left of first water tank, and the first water tank is located at the lower section of the second ash discharge outlet, described
First choice permeability film is installed on the right side of the first water tank, and the second water tank is installed on the right side of first choice permeability film,
Second permselectivity membrane is installed on the right side of second water tank, and the 3rd water is installed on the right side of the second permselectivity membrane
Case, and the lower right corner of three-tank is provided with water outlet, and the lower inside of the cleaner body is provided with lower dust-extraction unit,
And filter screen is installed above lower dust-extraction unit, the inner upper of the cleaner body is provided with dust-extraction unit, and removes
Water filling port is provided with above dirt device main body, motor is installed, and motor is removed by belt with the left of the water filling port
Dirt device is rotatablely connected, and the upper right corner of the cleaner body is connected by the 3rd connecting tube with air pump, and the right side peace of air pump
Equipped with purifying column.
Preferably, first connecting tube is inverted " u "-shaped structure.
Preferably, the second ash discharge outlet is placed in the inside of the first water tank, and the first water tank, the second water tank and the 3rd water
Case is interconnected by first choice permeability film and the second permselectivity membrane respectively.
Preferably, the first choice permeability film and the second permselectivity membrane are honeycomb structure, and first selects
The honeycomb aperture for selecting permeability film is 2 times of the second permselectivity membrane honeycomb aperture.
Preferably, the lower dust-extraction unit includes horizontal water pipe, water injection interface, shower valve and spray head, horizontal water pipe
Right side is provided with water injection interface, and the both sides up and down of horizontal water pipe are mounted on shower valve, and is provided with the outside of shower valve
Spray head.
Preferably, the spray head is "eight" shape structure, and is provided with 3 spray heads on each shower valve.
Preferably, the upper dust-extraction unit includes three-way pipe, longitudinal water pipe, shaft and spray tube, the top peace of three-way pipe
Equipped with longitudinal water pipe, and longitudinal water pipe runs through from the inside of shaft, and the left and right sides of three-way pipe and lower section are mounted on
Spray tube.
Preferably, the inside of the purifying column is provided with the first activated carbon purifying filter element, desulfurization filter element with this from the bottom up
With the second activated carbon purifying filter element.
Compared with prior art, the beneficial effects of the invention are as follows：The high efficiency is classified deduster, and there is higher dedusting to imitate
Rate, can quickly be removed the dust in dust and gas, and can be purified the pollution gas contained in dust, be gone out
Dust can be effectively addressed, more environmentally friendly, which exports the inside for being placed in the first water tank, and the first water tank,
Second water tank and three-tank are interconnected by first choice permeability film and the second permselectivity membrane respectively, first choice
Permeability film and the second permselectivity membrane are honeycomb structure, and the honeycomb aperture of first choice permeability film is the second choosing
Select permeability film honeycomb aperture 2 times, the gas by bag hose filtering enter the inside of cleaner body from bottom, pass through
The effect of cleaner body, heavier dust enter the inside of the first water tank, the inside of the first water tank from the second ash discharge outlet
Water is filled with, is dissolved in water dust, then the water inside the first water tank is entered by the filtering of first choice permeability film
The inside of second water tank, then the inside of three-tank is entered to reuse by the filtering of the second permselectivity membrane.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the lower dust-extraction unit structure diagram of the present invention；
Fig. 3 is dust-extraction unit schematic diagram in structure of the present invention；
Fig. 4 is purifying column internal structure schematic diagram of the present invention.
In figure：1st, the first ash discharge funnel, the 2, first ash discharge outlet, 3, stent, 4, bag hose, 5, dust and gas import, 6, first
Connecting tube, the 7, second connecting tube, 8, cleaner body, the 9, second ash discharge outlet, the 10, first water tank, 11, sewage draining exit, 12, first
Permselectivity membrane, the 13, second water tank, the 14, second permselectivity membrane, 15, three-tank, 16, water outlet, 17, lower dedusting
Device, 1701, horizontal water pipe, 1702, water injection interface, 1703, shower valve, 1704, spray head, 18, filter screen, 19, upper dedusting
Device, 1901, three-way pipe, 1902, longitudinal water pipe, 1903, shaft, 1904, spray tube, 20, water filling port, 21, belt, 22, electricity
Motivation, the 23, the 3rd connecting tube, 24, air pump, 25, purifying column, the 2501, first activated carbon purifying filter element, 2502, desulfurization filter element,
2503rd, the second activated carbon purifying filter element.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
- 4 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of high efficiency is classified deduster, including the first ash discharge
Funnel 1, bag hose 4,8 and first water tank 10 of cleaner body, the lower section of the first ash discharge funnel 1 are provided with the first ash discharge outlet 2,
And first the both sides of ash discharge funnel 1 be mounted on stent 3, the left side of bag hose 4 is provided with dust and gas import 5, and bag hose 4 is located at
The top of first ash discharge funnel 1, the top of bag hose 4 are provided with the first connecting tube 6, and the other end connection of the first connecting tube 6
There is the second connecting tube 7, the first connecting tube 6 is inverted " u "-shaped structure, and one end of the first connecting tube 6 connects the top of bag hose 4, together
When the first connecting tube 6 coordinate the second connecting tube 7 bag hose 4 is connected with cleaner body 8, the setting of the bottom of cleaner body 8
There is the second ash discharge to export 9, and cleaner body 8 is located at the right side of the second connecting tube 7, the left side of the first water tank 10 is provided with blowdown
Mouth 11, and the first water tank 10 is located at the lower section of the second ash discharge outlet 9, the right side of the first water tank 10 is provided with first choice permeability
Film 12, and the right side of first choice permeability film 12 is provided with the second water tank 13, the right side of the second water tank 13 is provided with the second choosing
Permeability film 14 is selected, and the right side of the second permselectivity membrane 14 is provided with three-tank 15, and the bottom right of three-tank 15
Angle is provided with water outlet 16, and the second ash discharge outlet 9 is placed in the inside of the first water tank 10, and the first water tank 10,13 and of the second water tank
Three-tank 15 is interconnected by first choice permeability film 12 and the second permselectivity membrane 14 respectively, and first choice passes through
Property 12 and second permselectivity membrane 14 of film be honeycomb structure, and the honeycomb aperture of first choice permeability film 12 be second
2 times of 14 honeycomb aperture of permselectivity membrane, the gas filtered by bag hose 4 are entered in cleaner body 8 from bottom
Portion, by the effect of cleaner body 8, inside that heavier dust enters the first water tank 10 from the second ash discharge outlet 9, first
Water is filled with the inside of water tank 10, is dissolved in water dust, and then the water inside the first water tank 10 passes through first choice permeability
The filtering of film 12 enters the inside of the second water tank 13, then enters three-tank by the filtering of the second permselectivity membrane 14
To reuse, the lower inside of cleaner body 8 is provided with lower dust-extraction unit 17 for 15 inside, and lower dust-extraction unit 17
Top is provided with filter screen 18, and lower dust-extraction unit 17 includes horizontal water pipe 1701, water injection interface 1702, shower valve 1703 and spray
First 1704, the right side of horizontal water pipe 1701 is provided with water injection interface 1702, and the both sides up and down of horizontal water pipe 1701 are mounted on
Shower valve 1703, and the outside of shower valve 1703 is provided with spray head 1704, and spray head 1704 is "eight" shape structure, and often
3 spray heads 1704 are installed on a shower valve 1703,1702 external water source of water injection interface of lower dust-extraction unit 17, make clear water from
The inside of horizontal water pipe 1701 is sprayed at lower section inside cleaner body 8, " eight " by shower valve 1703 from spray head 1704
The more uniform dust removing effects that the spray head 1704 of character form structure can spray clear water are more preferable, on the inside of cleaner body 8
Side is provided with dust-extraction unit 19, and the top of cleaner body 8 is provided with water filling port 20, and upper dust-extraction unit 19 includes three-way pipe
1901st, longitudinal water pipe 1902, shaft 1903 and spray tube 1904, the top of three-way pipe 1901 are provided with longitudinal water pipe 1902, and
Longitudinal water pipe 1902 runs through from the inside of shaft 1903, and the left and right sides of three-way pipe 1901 and lower section are mounted on spraying
Pipe 1904, motor 22 drive the shaft 1903 of upper dust-extraction unit 19 to be rotated by belt 21, and clear water is from water filling port
20 inject to the inside of longitudinal water pipe 1902, and the inside of spray tube 1904, spray tube 1904 are entered from three-way pipe 1901
Clear water is uniformly sprayed to 8 inner upper of cleaner body carry out dedusting, the left side installation of water filling port 20 during rotation
There is motor 22, and motor 22 is rotatablely connected by belt 21 and upper dust-extraction unit 19, the upper right corner of cleaner body 8 passes through
3rd connecting tube 23 is connected with air pump 24, and the right side of air pump 24 is provided with purifying column 25, and the inside of purifying column 25 is from the bottom up
First activated carbon purifying filter element 2501,2502 and second activated carbon purifying filter element 2503 of desulfurization filter element are provided with this, in air pump
Gas under the action of 24 after dedusting is with this by the first activated carbon purifying filter element 2501,2502 and second activated carbon of desulfurization filter element
It is discharged into again in air after the purification of purifying filter element 2503.
Operation principle：When using high efficiency classification deduster, dust and gas is sent to bag hose from dust and gas import 5 first
4 inside, first passes through the rough dusting of bag hose 4, since the first connecting tube 6 is inverted " u "-shaped structure, the one of the first connecting tube 6
The top of end connection bag hose 4, while the first connecting tube 6 coordinates the second connecting tube 7 bag hose 4 is connected with cleaner body 8,
Second ash discharge outlet 9 is placed in the inside of the first water tank 10, and the first water tank 10, the second water tank 13 and three-tank 15 pass through respectively
First choice permeability film 12 and the second permselectivity membrane 14 are interconnected, and the selection of first choice permeability film 12 and second is saturating
The property crossed film 14 is honeycomb structure, and the honeycomb aperture of first choice permeability film 12 is 14 honeycomb of the second permselectivity membrane
2 times of aperture, the gas filtered by bag hose 4 enters the inside of cleaner body 8 from bottom, by cleaner body 8
Effect, the inside that heavier dust enters the first water tank 10 from the second ash discharge outlet 9, the inside of the first water tank 10 is filled with
Water, is dissolved in water dust, and then the water inside the first water tank 10 is entered by the filtering of first choice permeability film 12
The inside of second water tank 13, then the inside of three-tank 15 is entered so as to repetition by the filtering of the second permselectivity membrane 14
Utilize, spray head 1704 is "eight" shape structure, and 3 spray heads 1704 are provided with each shower valve 1703, lower dedusting dress
17 1702 external water source of water injection interface is put, clear water is passed through shower valve 1703 from spray head from the inside of horizontal water pipe 1701
1704 are sprayed at the lower section inside cleaner body 8, and the spray head 1704 of "eight" shape structure can make clear water sprinkling more
Uniform dust removing effects are more preferable, and motor 22 drives the shaft 1903 of upper dust-extraction unit 19 to be rotated by belt 21, and clearly
Water is injected from water filling port 20 to the inside of longitudinal water pipe 1902, and the inside of spray tube 1904 is entered from three-way pipe 1901,
Spray tube 1904 uniformly sprays clear water to 8 inner upper of cleaner body during rotation and carries out dedusting, in air pump 24
Under the action of gas after dedusting it is net by the first activated carbon purifying filter element 2501,2502 and second activated carbon of desulfurization filter element with this
It is discharged into again in air after changing the purification of filter core 2503, here it is the operation principle of high efficiency classification deduster.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of high efficiency is classified deduster, including the first ash discharge funnel (1), bag hose (4), cleaner body (8) and first
Water tank (10), it is characterised in that：The first ash discharge outlet (2), and the first ash discharge are provided with below the first ash discharge funnel (1)
The both sides of funnel (1) are mounted on stent (3), and dust and gas import (5), and bag hose (4) are provided with the left of the bag hose (4)
Positioned at the top of the first ash discharge funnel (1), the first connecting tube (6), and the first connecting tube are installed above the bag hose (4)
(6) the other end is connected with the second connecting tube (7), and the bottom of the cleaner body (8) is provided with the second ash discharge outlet (9),
And cleaner body (8) is located at the right side of the second connecting tube (7), and sewage draining exit is provided with the left of first water tank (10)
(11), and the first water tank (10) is located at the lower section that the second ash discharge exports (9), and first is provided with the right side of first water tank (10)
Permselectivity membrane (12), and the second water tank (13) is installed on the right side of first choice permeability film (12), second water tank
(13) the second permselectivity membrane (14) is installed on the right side of, and the 3rd water is installed on the right side of the second permselectivity membrane (14)
Case (15), and the lower right corner of three-tank (15) is provided with water outlet (16), the lower inside peace of the cleaner body (8)
Equipped with lower dust-extraction unit (17), and filter screen (18) is installed above lower dust-extraction unit (17), the cleaner body (8)
Inner upper is provided with dust-extraction unit (19), and is provided with water filling port (20), the water filling port above cleaner body (8)
(20) motor (22) is installed on the left of, and motor (22) is rotatablely connected by belt (21) and upper dust-extraction unit (19),
The upper right corner of the cleaner body (8) is connected by the 3rd connecting tube (23) with air pump (24), and the right side peace of air pump (24)
Equipped with purifying column (25).
A kind of 2. high efficiency classification deduster according to claim 1, it is characterised in that：First connecting tube (6) is
Inverted " u "-shaped structure.
A kind of 3. high efficiency classification deduster according to claim 1, it is characterised in that：Second ash discharge exports (9)
The inside of the first water tank (10) is placed in, and the first water tank (10), the second water tank (13) and three-tank (15) pass through first respectively
Permselectivity membrane (12) is interconnected with the second permselectivity membrane (14).
A kind of 4. high efficiency classification deduster according to claim 1, it is characterised in that：The first choice permeability film
(12) it is honeycomb structure with the second permselectivity membrane (14), and the honeycomb aperture of first choice permeability film (12) is the
2 times of two permselectivity membranes (14) honeycomb aperture.
A kind of 5. high efficiency classification deduster according to claim 1, it is characterised in that：Lower dust-extraction unit (17) bag
Include horizontal water pipe (1701), water injection interface (1702), shower valve (1703) and spray head (1704), the right side of horizontal water pipe (1701)
Side is provided with water injection interface (1702), and the both sides up and down of horizontal water pipe (1701) are mounted on shower valve (1703), and sprays
Spray head (1704) is installed on the outside of leaching valve (1703).
A kind of 6. high efficiency classification deduster according to claim 5, it is characterised in that：The spray head (1704) is
"eight" shape structure, and 3 spray heads (1704) are installed on each shower valve (1703).
A kind of 7. high efficiency classification deduster according to claim 1, it is characterised in that：Upper dust-extraction unit (19) bag
Include three-way pipe (1901), longitudinal water pipe (1902), shaft (1903) and spray tube (1904), the top installation of three-way pipe (1901)
There is longitudinal water pipe (1902), and longitudinal water pipe (1902) is run through from the inside of shaft (1903), and a left side for three-way pipe (1901)
Right both sides and lower section are mounted on spray tube (1904).
A kind of 8. high efficiency classification deduster according to claim 1, it is characterised in that：The inside of the purifying column (25)
The first activated carbon purifying filter element (2501), desulfurization filter element (2502) and the second activated carbon purifying filter element are provided with this from the bottom up
(2503)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711175422.2A CN107952325A (en) | 2017-11-22 | 2017-11-22 | A kind of high efficiency is classified deduster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711175422.2A CN107952325A (en) | 2017-11-22 | 2017-11-22 | A kind of high efficiency is classified deduster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107952325A true CN107952325A (en) | 2018-04-24 |
Family
ID=61959547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711175422.2A Pending CN107952325A (en) | 2017-11-22 | 2017-11-22 | A kind of high efficiency is classified deduster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107952325A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421240A (en) * | 2020-03-27 | 2020-07-17 | 安徽汉超智能装备科技有限公司 | Laser cutting machine with exhaust gas purification device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761283Y (en) * | 2004-12-08 | 2006-03-01 | 李冠军 | Double-nozzle of spray |
| CN205832871U (en) * | 2016-07-01 | 2016-12-28 | 陕西蔚蓝节能环境科技集团有限责任公司 | A kind of novel power plant dust removing device for flue gas of boiler |
| CN206081991U (en) * | 2016-10-14 | 2017-04-12 | 湖南工学院 | Flue gas dust removal equipment |
| CN107321110A (en) * | 2017-08-08 | 2017-11-07 | 山东中玻节能环保发展有限公司 | A kind of energy-conserving and environment-protective dust pelletizing system |
-
2017
- 2017-11-22 CN CN201711175422.2A patent/CN107952325A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761283Y (en) * | 2004-12-08 | 2006-03-01 | 李冠军 | Double-nozzle of spray |
| CN205832871U (en) * | 2016-07-01 | 2016-12-28 | 陕西蔚蓝节能环境科技集团有限责任公司 | A kind of novel power plant dust removing device for flue gas of boiler |
| CN206081991U (en) * | 2016-10-14 | 2017-04-12 | 湖南工学院 | Flue gas dust removal equipment |
| CN107321110A (en) * | 2017-08-08 | 2017-11-07 | 山东中玻节能环保发展有限公司 | A kind of energy-conserving and environment-protective dust pelletizing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421240A (en) * | 2020-03-27 | 2020-07-17 | 安徽汉超智能装备科技有限公司 | Laser cutting machine with exhaust gas purification device |
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