CN103961948A - Energy-saving and environment-friendly dust removal equipment - Google Patents
Energy-saving and environment-friendly dust removal equipment Download PDFInfo
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- CN103961948A CN103961948A CN201410210316.3A CN201410210316A CN103961948A CN 103961948 A CN103961948 A CN 103961948A CN 201410210316 A CN201410210316 A CN 201410210316A CN 103961948 A CN103961948 A CN 103961948A
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Abstract
The invention belongs to the technical field of dust removal equipment, particularly relates to energy-saving and environment-friendly dust removal equipment, and is particularly applied to the fields of steelmaking, metallurgy and the like. The technical problems of irrationality and the like in the prior art are solved. The dust removal equipment also comprises a combined fan type induced draft device, wherein the combined fan type induced draft device is fixed on a dust removal box through a detachable structure, is communicated with an air outlet, and comprises an induced draft box of which the periphery is sealed and the two ends are open; an opening in one end of the induced draft box is an induced draft end, and an opening in the other end of the induced draft box is an air outlet end; a plurality of fans are transversely arranged in the induced draft box, and are fixed in the induced draft box through positioning structures. Compared with the prior art, the energy-saving and environment-friendly dust removal equipment has the advantages that 1, the design is reasonable, the structure is simple and compact, the energy consumption is low, and the using cost can be greatly lowered; 2, the working stability is high, the normal work of a whole system can be ensured even though part of the fans fail, and the equipment is not required to be stopped during inspection.
Description
Technical field
The invention belongs to cleaner technical field, especially relate to a kind of energy-conserving and environment-protective cleaner, be specially adapted to make steel the field such as metallurgical.
Background technology
Cleaner is commonly called as deduster, is the device of removing or reduce fly ash content in flue gas.The kind of dust arrester can be divided into bag-type dust collector, cyclone dust collector, wet dust separater, electrostatic precipitator, desulfation dust-extraction device.Be widely used in the industry such as chemical industry, thermoelectricity, oil, metallurgy, building, mine, machinery, light textile.Existing blower unit is mainly single high-power centrifugal fan, in order to ensure blower effect, conventionally adopts the blower fan larger than actual power demand, therefore exists the problem that energy loss is high, waste social resources.In addition, single centrifugal fan also exists the poor problem of job stability, once break down the technical problem such as cause that whole system cannot normally be worked.For this reason, people have carried out long-term exploration, have proposed various solutions, but all fail to be significantly improved.
For example, Chinese patent literature discloses a kind of sack cleaner and fan combination unit [application number: 201110242711.6], include sack cleaner and blower fan, also include airduct, described sack cleaner includes housing, on housing, be provided with deduster air inlet and deduster air outlet, on blower fan, be provided with air inlet and fan outlet, deduster air inlet is directly connected with outside dust sucting pipeline, deduster air outlet is connected with air inlet by airduct, and fan outlet is connected with outside atmosphere.
Although high, the good dedusting effect of Environmental-protecting dust-removing efficiency in such scheme, but it is reasonable not still to exist design, the design of single high-power centrifugal fan is installed, energy consumption is higher, do not meet the theory of energy-saving and emission-reduction, and the cost that has increased the weight of enterprise, service behaviour is unstable, will cause whole system to quit work once break down.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of reasonable in design, simple in structure, the energy-conserving and environment-protective cleaner that energy consumption is low.
For achieving the above object, the present invention has adopted following technical proposal: this energy-conservation Environmental-protecting dust-removing equipment, comprise the dust cleaning case with air inlet and air outlet, in described dust cleaning case, be provided with bag-type dust assembly, and dust cleaning case is divided into dust-laden air chamber and air-purifying chamber by bag-type dust assembly, described air inlet and dust-laden air chamber connect, described air outlet and air-purifying chamber connect, it is characterized in that, this cleaner also comprises combined fan formula blower unit, this combined fan formula blower unit is fixed on dust cleaning case and with air outlet and is communicated with by demountable structure, described combined fan formula blower unit comprises the air inducing case of circumferential sealing and open at both ends, one end of air inducing case is uncovered is air inducing end, the other end is uncovered is outlet air end, in air inducing case, be provided with some blower fans, each blower fan is transversely arranged setting in air inducing case, described blower fan is fixed in air inducing case by location structure.
In above-mentioned energy-conserving and environment-protective cleaner, described air outlet is positioned at the sidepiece of dust cleaning case, be fixed with described combined fan formula blower unit in the inner side of air outlet, on the outlet air end of combined fan formula blower unit, be connected with the air outlet that discharge pipe and discharge pipe pass dust cleaning case, on discharge pipe, be connected with delivery pipe.
In above-mentioned energy-conserving and environment-protective cleaner, described air outlet is positioned at the sidepiece of dust cleaning case, be fixed with described combined fan formula blower unit in the outside of air outlet, the air inducing end of combined fan formula blower unit docks with described air outlet, and described outlet air end docks with delivery pipe.
In above-mentioned energy-conserving and environment-protective cleaner, on described air outlet, be connected with induced duct, on induced duct, be connected with the combined fan formula blower unit that is arranged on ground, and the air inducing end of combined fan formula blower unit is connected with induced duct, be connected with delivery pipe at the outlet air end of combined fan formula blower unit.
In above-mentioned energy-conserving and environment-protective cleaner, described air-purifying chamber is positioned at dust-laden air chamber top, described air outlet is arranged on dust cleaning case top, be provided with the combined fan formula blower unit being communicated with air outlet at dust cleaning case top, and the air inducing end of combined fan formula blower unit and air outlet connect, and are connected with delivery pipe at the outlet air end of combined fan formula blower unit.
In above-mentioned energy-conserving and environment-protective cleaner, described blower fan comprises the air duct of circumferential sealing and open at both ends, in air duct, be fixed with motor by fixed structure, between described air duct inwall and motor outside, form the airflow clearance that air feed stream passes through, in the rotating shaft of described motor, be fixed with fan blade, each motor parallel is supplying on electrical connection device.
In above-mentioned energy-conserving and environment-protective cleaner, described air duct is cylindric, and the length of air duct is no more than the length of air inducing case, between some air ducts of adjacent setting, forms the first space, between air duct and air inducing chamber interior wall, forms Second gap; Described location structure comprises the first location-plate and the second location-plate, and the first described location-plate is fixed in the first space and shape and the first space match, and the second described location-plate, is fixed in Second gap and shape and Second gap match; The first described location-plate and the second location-plate, be all positioned on the same cross section of air inducing case or described the first location-plate and the second location-plate, is distributed on the varying cross-section of air inducing case.
In above-mentioned energy-conserving and environment-protective cleaner, the two ends of described rotating shaft pass respectively outside the housing of motor, the wind-force direction that is fixed with respectively fan blade and two fan blade generations at the two ends of rotating shaft is identical, and is less than the wind-force towards outlet air end one end towards the wind-force of air inducing end one end in two fan blades of same blower fan; Or one end of described rotating shaft passes outside electric machine casing, the one end outside rotating shaft passes electric machine casing is fixed with fan blade.
In above-mentioned energy-conserving and environment-protective cleaner, the length of described air inducing case is the middle part that three times of air duct length and air duct are arranged on air inducing case length direction, is provided with access hole at least one distolateral portion of air inducing case, on described access hole, is packaged with shrouding.
In above-mentioned energy-conserving and environment-protective cleaner, any one shape in the described air inducing case side of being body, trapezoidal shape, cylindrical shape, truncated cone; The air inducing end of described air inducing case is the reducing shape that self-induced-air case shrinks gradually to this end end, and the outlet air end of described air inducing case is the reducing shape that self-induced-air case shrinks gradually to this end end.
Compared with prior art, the advantage of this energy-conservation Environmental-protecting dust-removing equipment is: 1, reasonable in design, simple and compact for structure, energy consumption is low, can significantly reduce use cost.2, good operating stability, also can guarantee that whole system normally works even if part blower fan breaks down, without shutdown inspection.3, blower effect is better, has improved air-out efficiency.4, can transform easily dismounting, maintenance, easy to maintenance to existing equipment.
Brief description of the drawings
Fig. 1 is embodiment 1 structural representation provided by the invention.
Fig. 2 is embodiment 1 combined fan formula blower unit sectional structure schematic diagram provided by the invention.
Fig. 3 is structured flowchart provided by the invention.
Fig. 4 is part perspective view provided by the invention.
Fig. 5 is the blower fan side-looking structural representation of amplification provided by the invention.
Fig. 6 is embodiment 2 structural representations provided by the invention.
Fig. 7 is embodiment 3 structural representations provided by the invention.
Fig. 8 is embodiment 4 structural representations provided by the invention.
Fig. 9 is embodiment 5 combined fan formula blower unit sectional structure schematic diagrames provided by the invention.
Figure 10 is embodiment 6 combined fan formula blower unit sectional structure schematic diagrames provided by the invention.
Figure 11 is embodiment 7 combined fan formula blower unit sectional structure schematic diagrames provided by the invention.
In figure, air inlet 11, air outlet 12, dust cleaning case 1, lifting roller 1b, bag-type dust assembly 2, dust-laden air chamber 21, air-purifying chamber 22, combined fan formula blower unit 3, air inducing end 3a, outlet air end 3b, air inducing case 31, blower fan 32, location structure 4, discharge pipe 3c, delivery pipe 3d, air duct 321, motor 322, airflow clearance 323, rotating shaft 322a, fan blade 322b, the first space 5, Second gap 6, the first location-plate 41, the second location-plate 42, confession electrical connection device 1a.
Detailed description of the invention
Embodiment 1:
As Figure 1-5, this energy-conservation Environmental-protecting dust-removing equipment, comprise the dust cleaning case 1 with air inlet 11 and air outlet 12, in dust cleaning case 1, be provided with bag-type dust assembly 2, and dust cleaning case 1 is divided into dust-laden air chamber 21 and air-purifying chamber 22 by bag-type dust assembly 2, air inlet 11 connects with dust-laden air chamber 21, air outlet 12 connects with air-purifying chamber 22, this cleaner also comprises combined fan formula blower unit 3, this combined fan formula blower unit 3 is fixed on dust cleaning case 1 and with air outlet 12 and is communicated with by demountable structure, combined fan formula blower unit 3 comprises the air inducing case 31 of circumferential sealing and open at both ends, one end of air inducing case 31 is uncovered is air inducing end 3a, the other end is uncovered is outlet air end 3b, in air inducing case 31, be provided with some blower fans 32, each blower fan 32 is in the interior transversely arranged setting of air inducing case 31, blower fan 32 is fixed in air inducing case 31 by location structure 4.In particular, air outlet 12 is positioned at the sidepiece of dust cleaning case 1, be fixed with described combined fan formula blower unit 3 in the inner side of air outlet 12, on the outlet air end 3b of combined fan formula blower unit 3, be connected with the air outlet 12 that discharge pipe 3c and discharge pipe 3c pass dust cleaning case 1, on discharge pipe 3c, be connected with delivery pipe 3d.Air inducing case 31 in the present embodiment is trapezoidal shape, and obviously air inducing case 31 other shapes of employing are also feasible, such as cylindrical shape, truncated cone etc.Demountable structure comprises the adpting flange between outlet air end 3a and the delivery pipe 3d that is arranged on air inducing case 31.
Blower fan 32 comprises the air duct 321 of circumferential sealing and open at both ends, in air duct 321, be fixed with motor 322 by fixed structure, between air duct 321 inwalls and motor 322 outsides, form the airflow clearance 323 that air feed stream passes through, on the rotating shaft 322a of motor 322, be fixed with fan blade 322b, each motor 322 is connected in parallel on on electrical connection device 1a.Each motor 322 is also connected with frequency-variable controller respectively.Owing to being provided with multiple blower fans 32, the mutual collaborative work of each blower fan 32 realizes air inducing, without obviously too high independent blower fan of allocating power.Because each motor 322 is connected in parallel on for electrical connection device 1a above, therefore wherein any one or more motors 322 break down and also can not cause all the other motors 322 to work, and the good stability of therefore working, can guarantee that whole equipment is without quitting work.After the task of finishing the work, overhaul, the smooth and easy of safeguard work carries out again.On the other hand, can also select artificially as required to participate in blower fan 32 quantity of work, required to adapt to different air inducing abilities.For the ease of the blower fan 32 that participates in work is selected, on each blower fan 32, also can install and control the switch that this blower fan 32 is worked.Arranging of frequency-variable controller can facilitate the operating power of selecting as required blower fan 32, to realize the optimum Match of energy resource consumption and actual required air inducing ability; The fixed structure here can adopt various forms, as long as motor 322 can be fixed on to air duct 321 inwalls, prerequisite is that fixed structure can not shutoff airflow clearance 323 certainly.In theory, under the enough prerequisite of constant intensity, fixed structure is the smaller the better on the impact of airflow clearance 323.In addition, enough large in order to ensure airflow clearance 323, motor 322 adopts elongated motor, thereby guarantees the flux of airflow clearance 323.
Air duct 321 is cylindric, and the length of air duct 321 is no more than the length of air inducing case 31, forms the first space 5 between some air ducts 321 of adjacent setting, between air duct 321 and air inducing case 31 inwalls, forms Second gap 6; Location structure 4 comprises that the first location-plate 41 and the second location-plate 42, the first location-plates 41 are fixed in the first space 5 and shape matches with the first space 5, and the second location-plate 42 is fixed on the interior and shape of Second gap 6 and Second gap 6 and matches; The first location-plate 41 and the second location-plate 42, be all positioned on the same cross section of air inducing case 31 or the first location-plate 41 and the second location-plate 42, is distributed on the varying cross-section of air inducing case 31.Obviously, the structure of location structure 4 can adopt diversified mode.For example, at the interior plate body of fixing a horizontally set of air inducing case 31, offer some locating holes that insert for air duct 321 on plate body, air duct 321 is fixed in locating hole.In the present embodiment, the first location-plate 41 and the second location-plate 42 are fixed by welding manner respectively.
The two ends of rotating shaft 322a pass respectively outside the housing of motor 322, the wind-force direction that is fixed with respectively fan blade 322b and two fan blade 322b generations at the two ends of rotating shaft 322a is identical, and is less than the wind-force towards outlet air end 3b one end towards the wind-force of air inducing end 3a one end in two fan blade 322b of same blower fan 32.This design can make to produce pressure reduction between two fan blade 322b, thereby effectively improves blower effect.
The length of air inducing case 31 is the middle part that three times of air duct 321 length and air duct 321 are arranged on air inducing case 31 length directions, is provided with access hole at least one distolateral portion of air inducing case 31, is packaged with shrouding on access hole.
Embodiment 2:
As shown in Figure 6, in the present embodiment, air outlet 12 is positioned at the sidepiece of dust cleaning case 1, is fixed with described combined fan formula blower unit 3 in the outside of air outlet 12, the air inducing end 3a of combined fan formula blower unit 3 docks with air outlet 12, and outlet air end 3b docks with delivery pipe 3d.In the present embodiment, dust cleaning case 1 top is fixed with the lifting roller 1b being positioned at directly over combined fan formula blower unit 3, thereby can, by lifting roller 1b, be convenient to combined fan formula blower unit 3 and lift easily, reduce installation difficulty, be easy to the transformation to existing equipment.All the other all with embodiment 1 roughly the same, do not repeat herein.
Embodiment 3:
As shown in Figure 7, in the present embodiment, on air outlet 12, be connected with induced duct 12a, on induced duct 12a, be connected with the combined fan formula blower unit 3 that is arranged on ground, and the air inducing end 3a of combined fan formula blower unit 3 is connected with induced duct 12a, is connected with delivery pipe 3d at the outlet air end 3b of combined fan formula blower unit 3.Because combined fan formula blower unit 3 is arranged on ground, therefore can install easily without lifting, easy to implement, be particularly suitable for the transformation to existing equipment.In the present embodiment, the air inducing end 3a of air inducing case 31 is the reducing shape that self-induced-air case 31 shrinks gradually to this end end, and the outlet air end 3b of air inducing case 31 is the reducing shape that self-induced-air case 31 shrinks gradually to this end end.More particularly, the size that induced duct 12a and delivery pipe 3d are pipe and induced duct 12a and delivery pipe 3d is less than the size at air inducing case 31 middle parts, the air inducing end 3a of air inducing case 31 is the reducing shape that self-induced-air case 41 shrinks gradually to induced duct 12a, and the outlet air end 3b of air inducing case 31 is the reducing shape that self-induced-air case 41 shrinks gradually to delivery pipe 3d.This structure has realized the increase of blower fan 42 installing spaces, is conducive to the layout of blower fan 42.All the other all with embodiment 1 roughly the same, do not repeat herein.
Embodiment 4:
As shown in Figure 8, in the present embodiment, air-purifying chamber 22 is positioned at dust-laden air chamber 21 tops, air outlet 12 is arranged on dust cleaning case 1 top, be provided with the combined fan formula blower unit 3 being communicated with air outlet 12 at dust cleaning case 1 top, and air inducing end 3a and the air outlet 12 of combined fan formula blower unit 3 connect, and are connected with delivery pipe 3d at the outlet air end 3b of combined fan formula blower unit 3.All the other all with embodiment 1 roughly the same, do not repeat herein.
Embodiment 5:
As shown in Figure 9, in the present embodiment, one end of rotating shaft 322a passes outside motor 322 housings, and the one end outside rotating shaft 322a passes motor 322 housings is fixed with fan blade 322b.All the other all with embodiment 1, embodiment 2, embodiment 3 or embodiment 4 roughly the same, do not repeat herein.
Embodiment 6:
As shown in figure 10, in the present embodiment, air inducing case 31 side's of being bodies.All the other all with embodiment 1, embodiment 2, embodiment 3 or embodiment 4 roughly the same, do not repeat herein.
Embodiment 7:
As shown in figure 11, in the present embodiment, one end of rotating shaft 322a passes outside motor 322 housings, and the one end outside rotating shaft 322a passes motor 322 housings is fixed with fan blade 322b.All the other all with embodiment 6 roughly the same, do not repeat herein.
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 amendments or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more use air inlet 11, air outlet 12, dust cleaning case 1, lifting roller 1b, bag-type dust assembly 2, dust-laden air chamber 21, air-purifying chamber 22, combined fan formula blower unit 3, air inducing end 3a, outlet air end 3b, air inducing case 31, blower fan 32, location structure 4, discharge pipe 3c, delivery pipe 3d, air duct 321, motor 322, airflow clearance 323, rotating shaft 322a, fan blade 322b, the first space 5, Second gap 6, the first location-plate 41, the second location-plate 42 herein, supply the terms such as electrical connection device 1a, do not get rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (10)
1. an energy-conserving and environment-protective cleaner, comprise the dust cleaning case (1) of there is air inlet (11) and air outlet (12), in described dust cleaning case (1), be provided with bag-type dust assembly (2), and dust cleaning case (1) is divided into dust-laden air chamber (21) and air-purifying chamber (22) by bag-type dust assembly (2), described air inlet (11) connects with dust-laden air chamber (21), described air outlet (12) connects with air-purifying chamber (22), it is characterized in that, this cleaner also comprises combined fan formula blower unit (3), this combined fan formula blower unit (3) is fixed on dust cleaning case (1) above and is communicated with air outlet (12) by demountable structure, described combined fan formula blower unit (3) comprises the air inducing case (31) of circumferential sealing and open at both ends, one end of air inducing case (31) is uncovered is air inducing end (3a), the other end is uncovered is outlet air end (3b), in air inducing case (31), be provided with some blower fans (32), each blower fan (32) transversely arranged setting in air inducing case (31), described blower fan (32) is fixed in air inducing case (31) by location structure (4).
2. energy-conserving and environment-protective cleaner according to claim 1, it is characterized in that, described air outlet (12) is positioned at the sidepiece of dust cleaning case (1), be fixed with described combined fan formula blower unit (3) in the inner side of air outlet (12), on the outlet air end (3b) of combined fan formula blower unit (3), be connected with the air outlet (12) that discharge pipe (3c) and discharge pipe (3c) pass dust cleaning case (1), on discharge pipe (3c), be connected with delivery pipe (3d).
3. energy-conserving and environment-protective cleaner according to claim 1, it is characterized in that, described air outlet (12) is positioned at the sidepiece of dust cleaning case (1), be fixed with described combined fan formula blower unit (3) in the outside of air outlet (12), the air inducing end (3a) of combined fan formula blower unit (3) docks with described air outlet (12), and described outlet air end (3b) docks with delivery pipe (3d).
4. energy-conserving and environment-protective cleaner according to claim 1, it is characterized in that, on described air outlet (12), be connected with induced duct (12a), on induced duct (12a), be connected with the combined fan formula blower unit (3) that is arranged on ground, and the air inducing end (3a) of combined fan formula blower unit (3) is connected with induced duct (12a), be connected with delivery pipe (3d) at the outlet air end (3b) of combined fan formula blower unit (3).
5. energy-conserving and environment-protective cleaner according to claim 1, it is characterized in that, described air-purifying chamber (22) is positioned at dust-laden air chamber (21) top, described air outlet (12) is arranged on dust cleaning case (1) top, be provided with the combined fan formula blower unit (3) being communicated with air outlet (12) at dust cleaning case (1) top, and the air inducing end (3a) of combined fan formula blower unit (3) connects with air outlet (12), is connected with delivery pipe (3d) at the outlet air end (3b) of combined fan formula blower unit (3).
6. according to the energy-conserving and environment-protective cleaner described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, described blower fan (32) comprises the air duct (321) of circumferential sealing and open at both ends, in air duct (321), be fixed with motor (322) by fixed structure, between described air duct (321) inwall and motor (322) outside, form the airflow clearance (323) that air feed stream passes through, in the rotating shaft (322a) of described motor (322), be fixed with fan blade (322b), each motor (322) is connected in parallel on on electrical connection device (1a).
7. energy-conserving and environment-protective cleaner according to claim 6, it is characterized in that, described air duct (321) is cylindric, and the length of air duct (321) is no more than the length of air inducing case (31), between some air ducts (321) of adjacent setting, form the first space (5), between air duct (321) and air inducing case (31) inwall, form Second gap (6); Described location structure (4) comprises the first location-plate (41) and the second location-plate (42), described the first location-plate (41) is fixed in the first space (5) and shape and the first space (5) match, described the second location-plate (42), is fixed in Second gap (6) and shape and Second gap (6) match; Described the first location-plate (41) and the second location-plate (42), all be positioned on the same cross section of air inducing case (31) or described the first location-plate (41) and the second location-plate (42), be distributed on the varying cross-section of air inducing case (31).
8. energy-conserving and environment-protective cleaner according to claim 6, it is characterized in that, the two ends of described rotating shaft (322a) pass respectively outside the housing of motor (322), the wind-force direction that is fixed with respectively fan blade (322b) and two fan blades (322b) generation at the two ends of rotating shaft (322a) is identical, and is less than the wind-force towards outlet air end (3b) one end towards the wind-force of air inducing end (3a) one end in two fan blades (322b) of same blower fan (32); Or one end of described rotating shaft (322a) passes outside motor (322) housing, and the one end outside rotating shaft (322a) passes motor (322) housing is fixed with fan blade (322b).
9. energy-conserving and environment-protective cleaner according to claim 7, it is characterized in that, the length of described air inducing case (31) is the middle part that three times of air duct (321) length and air duct (321) are arranged on air inducing case (31) length direction, at least one distolateral portion at air inducing case (31) is provided with access hole, on described access hole, is packaged with shrouding.
10. energy-conserving and environment-protective cleaner according to claim 7, is characterized in that, any one shape in described air inducing case (31) side of being body, trapezoidal shape, cylindrical shape, truncated cone; The air inducing end (3a) of described air inducing case (31) is the reducing shape that self-induced-air case (31) shrinks gradually to this end end, and the outlet air end (3b) of described air inducing case (31) is the reducing shape that self-induced-air case (31) shrinks gradually to this end end.
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| CN201410210316.3A CN103961948B (en) | 2014-05-16 | 2014-05-16 | Energy-saving and environment-friendly dust removal equipment |
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| CN201410210316.3A CN103961948B (en) | 2014-05-16 | 2014-05-16 | Energy-saving and environment-friendly dust removal equipment |
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| CN103961948B CN103961948B (en) | 2017-01-18 |
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| CN105858139A (en) * | 2016-04-29 | 2016-08-17 | 施婷婷 | Plate-type constant powder feeder with automatic cleaning function |
| CN107243196A (en) * | 2017-07-27 | 2017-10-13 | 洛阳博日智能科技有限公司 | Modularization dust arrester |
| CN108619821A (en) * | 2018-07-10 | 2018-10-09 | 浙江风云环保科技有限公司 | Three-dimensional dynamic retracting device |
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