CN115254426B

CN115254426B - Dust removal device for furnace gas

Info

Publication number: CN115254426B
Application number: CN202211203011.0A
Authority: CN
Inventors: 卫志明; 王金明
Original assignee: Nantong Jinhua Separation Engineering Technology Co ltd
Current assignee: Nantong Jinhua Separation Engineering Technology Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-16
Anticipated expiration: 2042-09-29
Also published as: CN115254426A

Abstract

The invention relates to a dust removal device for furnace gas, which comprises a conveying mechanism for carrying out centralized treatment on dust-containing waste gas, a filtering mechanism for carrying out dust treatment on the waste gas, a pressurizing mechanism for pressurizing the dust-containing waste gas and a matching mechanism matched with the pressurizing mechanism to be closed, wherein the filtering mechanism is arranged in the conveying mechanism, the pressurizing mechanism and the matching mechanism are respectively arranged at the front and rear positions of a rotating frame of the filtering mechanism, the conveying mechanism comprises a power assembly main shaft, and an impurity removal mechanism is arranged between the rotating frame and the main shaft, so that the technical problems that secondary dust raising is easily caused when adsorption and oscillation treatment are carried out in the same space, and the dust adsorption effect of a polar plate is not ideal under normal pressure are solved.

Description

Dust removal device for furnace gas

Technical Field

The invention relates to the field of treatment of electronic-grade sulfuric acid purification furnace gas, in particular to a dust removal device for furnace gas.

Background

The electronic grade sulfuric acid is also called ultra-pure sulfuric acid, belongs to an ultra-pure high-purity reagent, is a wet electronic chemical with the largest industrial dosage, is mainly used for cleaning, photoetching, corrosion and the like of silicon wafers, corrosion and cleaning of printed circuit boards and the like, can effectively remove particle impurities, inorganic residues, carbon deposits and the like on the wafers and the printed circuit boards, and can be used for subsequent treatment only by carrying out a dry dust removal process when furnace gas purified by the electronic grade sulfuric acid is treated.

The invention discloses a Chinese patent of patent number 201010109611.1, which discloses an electrostatic dust collector, comprising a machine shell, wherein both ends of the machine shell are respectively provided with an air inlet and an air outlet, a plurality of cathode wires, anode plates and cathode wire rapping devices are arranged in the machine shell, the cathode wires are connected with the cathode wire rapping devices, the cathode wires are parallel to the anode plates, and the anode plates comprise a plurality of dust collecting sheets; a plurality of airflow guide plates are arranged at intervals at the air inlet and are vertical to the central axis of the shell, an air inlet channel baffle is arranged between every two adjacent airflow guide plates, each airflow guide plate comprises a plurality of guide pieces which are symmetrically distributed in a splayed shape along the central line of the airflow guide plate, the airflow guide plates and the air inlet channel baffle are generally positioned on the same plane, and the airflow guide plates are vertically arranged with the anode plates; the anode plate includes first anode plate and second anode plate, the whole plane that belongs to of collection piece of first anode plate becomes positive acute angle with casing axis, the whole plane that belongs to of collection piece of second anode plate becomes negative acute angle with casing axis, the both ends of first anode plate and second anode plate link to each other with air current deflector and gas vent passageway baffle respectively, although the detailed dust removal step is disclosed, in practical application, because the polar plate all can saturate after adsorbing, thereby need to vibrate the dust removal, and vibrate dust removal and air flue and be in same space, if vibrate light then can't remove dust, vibrate overweight then can cause the dust secondary to fly upward, thereby caused the dust sneak into the flue gas and taken place to run off, and the adsorption effect of dust and polar plate is general under normal atmospheric pressure.

Disclosure of Invention

The invention provides a dust removal device for furnace gas, which aims to solve the technical problems that secondary dust raising is easily caused when adsorption and oscillation treatment are carried out in the same space, and the dust adsorption effect of a polar plate under normal pressure is not ideal.

The dust removal device for furnace gas adopts the following technical scheme: the dust-removing device comprises a conveying mechanism for carrying out centralized treatment on dust-containing waste gas, a filtering mechanism for carrying out dust treatment on the waste gas, a pressurizing mechanism for pressurizing the dust-containing waste gas and a matching mechanism for matching with the pressurizing mechanism to close, wherein the filtering mechanism is arranged in the conveying mechanism, the pressurizing mechanism and the matching mechanism are respectively arranged at the front and rear positions of a rotating frame of the filtering mechanism, the conveying mechanism comprises a power assembly main shaft, and an impurity removing mechanism is arranged between the rotating frame and the main shaft; the filtering mechanism comprises a corona net, the corona net is arranged at the air inlet of the conveying mechanism, three groups of rotating frames are arranged on the rear side of the corona net, dust collecting electrode nets are uniformly arranged in the rotating frames, and electrode contacts are arranged on the outer sides of the rotating frames; the loading system includes the increased pressure board, the increased pressure board sets up the swivel mount front side, evenly formed has the air duct on the increased pressure board, the increased pressure board rear end is located the swivel mount front side is installed the closing plate.

Further, the closing plate the pressure plate bottom is hugged closely the main shaft, pressure plate internally mounted has the clamp plate, the clamp plate upper end is connected through the lock cylinder the pressure plate, the clamp plate passes through reset spring and connects the pressure plate, the guide block is installed to the clamp plate lower extreme, the guide block corresponds epaxial pressure tank, the clamp plate rear side position in the closing plate inside is provided with closed slider, closed slider corresponds the clamp plate side is the decurrent inclined plane of slope, closed slider keeps away from clamp plate one side and is located install closed fixture block on the main shaft, closed slider corresponds closed fixture block side for the slope to the inclined plane of closed fixture block.

Further, cooperation mechanism includes the fixed closed plate of rear end, the fixed closed plate of rear end is installed conveying mechanism is outside, rear end activity closed plate is installed to the fixed closed plate rear end of rear end, rear end activity closed plate rear side corresponds install the closed draw runner of rear end on the main shaft, the closed draw runner of rear end is the arc rectangular, the rear end activity closed plate inboard is connected through reset spring the fixed closed plate of rear end, closed slider is installed to the inboard position of rear end activity closed plate, the fixed closed plate of rear end corresponds closed slider is provided with the dead slot.

Furthermore, the filtering mechanism further comprises an intermittent gear, the intermittent gear is arranged between the rotating frame and the main shaft, a speed change gear is arranged at the upper end of the intermittent gear and fixed on the conveying mechanism, and the proportion of the tooth surface of the intermittent gear is fifty percent.

Further, edulcoration mechanism is including vibrations gear, vibrations gear is installed the intermittent type gear lower extreme, vibrations gear shaft body part is connected inside conveying mechanism, vibrations gear latter half is installed and is strikeed the piece, it installs the vibration strip to strike the piece downside, it corresponds to vibrate the strip the swivel mount the latter half.

Further, conveying mechanism still includes sealed bucket, four landing legs are installed to sealed bucket squat down, install the dust collection box between the landing leg, the air intake is installed to sealed bucket inlet end, sealed bucket is given vent to anger the end and is installed the air outlet, main shaft through connection sealed bucket, the motor is installed to main shaft power end, the main shaft corresponds the fixed disk is installed to cooperation mechanism position.

Furthermore, a lead frame is mounted on the outer portion of the sealing barrel corresponding to the position of the rotating frame.

The invention has the beneficial effects that: according to the invention, the separation before and after adsorption is carried out, so that secondary dust raising caused by oscillation is avoided, and meanwhile, waste gas is pressurized in space and then adsorbed with the dust collecting electrode net, so that the dust collecting electrode net and dust adsorption effect and the subsequent treatment effect for preventing dust raising are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic external view of an embodiment of a dust removing apparatus for furnace gas according to the present invention;

FIG. 2 is a schematic view showing the internal structure of an embodiment of a dust removing apparatus for furnace gas according to the present invention;

FIG. 3 is a first structural schematic diagram of a filtering mechanism of an embodiment of the dust removing device for furnace gas of the present invention;

FIG. 4 is a second schematic structural diagram of a filtering mechanism of an embodiment of the dust removing device for furnace gas according to the present invention;

FIG. 5 is a schematic view of a rotary frame structure of an embodiment of a dust removing device for furnace gas according to the present invention;

FIG. 6 is a front view of a rotating frame of an embodiment of a dust collector for furnace gas of the present invention;

FIG. 7 is a schematic view showing an opening structure of a closing plate of an embodiment of a dust removing apparatus for furnace gas according to the present invention;

FIG. 8 is a schematic view of a closing plate closing structure of an embodiment of a dust removing device for furnace gas according to the present invention;

FIG. 9 is a schematic structural view of a closed slide block of an embodiment of a dust removing device for furnace gas of the present invention;

FIG. 10 is a schematic structural diagram of an impurity removing mechanism of an embodiment of a dust removing device for furnace gas according to the present invention;

fig. 11 is a schematic structural diagram of a lock cylinder of an embodiment of the dust removing device for furnace gas of the present invention.

In the figure: 1. a conveying mechanism; 2. a filtering mechanism; 3. a pressurizing mechanism; 4. a mating mechanism; 5. an impurity removal mechanism; 11. sealing the barrel; 12. a dust collection box; 13. an air inlet; 14. an air outlet; 15. a motor; 16. a main shaft; 17. fixing the disc; 21. a lead frame; 22. a corona mesh; 23. a rotating frame; 24. a dust collecting electrode net; 25. an electrode contact; 26. a speed change gear; 27. an intermittent gear; 31. a pressurizing plate; 32. a gas passing groove; 33. a closing plate; 34. a pressurizing tank; 35. closing the clamping block; 36. closing the slider; 37. a lock cylinder; 38. pressing a plate; 39. a guide block; 41. a closing plate is fixed at the rear end; 42. a rear end movable closing plate; 43. the rear end is closed with a slide bar; 51. a vibration gear; 52. vibrating the strip; 53. and knocking the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

An embodiment of the dust removal device for furnace gas of the present invention, as shown in fig. 1 to 11, includes a conveying mechanism 1 for performing centralized processing on dust-containing waste gas, further includes a filtering mechanism 2 for performing dust processing on the waste gas, a pressurizing mechanism 3 for pressurizing the dust-containing waste gas, and a matching mechanism 4 for matching the pressurizing mechanism 3 to close, as shown in fig. 2 and 3, the filtering mechanism 2 is installed inside the conveying mechanism 1, the pressurizing mechanism 3 and the matching mechanism 4 are respectively installed at front and rear positions of a rotating frame 23 of the filtering mechanism 2, the conveying mechanism 1 includes a power assembly main shaft 16, and an impurity removal mechanism 5 is installed between the rotating frame 23 and the main shaft 16; as shown in fig. 2 and 3, the filtering mechanism 2 includes a corona net 22, the corona net 22 is installed at the air inlet of the conveying mechanism 1, three sets of rotating frames 23 are installed behind the corona net 22, the corona net 22 is used for performing electrification treatment on dust, the rotating frames 23 are used for installing and fixing dust collecting electrode nets 24, the dust collecting electrode nets 24 adsorb dust with electric ions, the dust collecting electrode nets 24 are evenly installed inside the rotating frames 23, and electrode contacts 25 are installed outside the rotating frames 23; as shown in fig. 2, the pressurizing mechanism 3 includes a pressurizing plate 31, the pressurizing plate 31 is disposed at the front side of the rotating frame 23, the air passing grooves 32 are uniformly formed on the pressurizing plate 31, a closing plate 33 is mounted at the rear end of the pressurizing plate 31 at the front side of the rotating frame 23, and the closing plate 33 and the pressurizing plate 31 cooperate to seal part of the dust-containing gas, thereby pressurizing.

As shown in fig. 9 and 10, the bottom of the closing plate 33 and the pressing plate 31 is tightly attached to the main shaft 16, a pressing plate 38 is installed inside the pressing plate 31, the upper end of the pressing plate 38 is connected to the pressing plate 31 through a lock column 37, the pressing plate 38 is connected to the pressing plate 31 through a return spring, a guide block 39 is installed at the lower end of the pressing plate 38, the guide block 39 corresponds to the pressing groove 34 on the main shaft 16, a closing slider 36 is installed inside the closing plate 33 at the rear side of the pressing plate 38, the side of the closing slider 36 corresponding to the pressing plate 38 is an inclined surface facing downward, a closing latch 35 is installed on the main shaft 16 at the side of the closing slider 36 far from the pressing plate 38, the side of the closing slider 36 corresponding to the closing latch 35 is an inclined surface facing the closing latch 35, when the spindle 16 drives the closing fixture block 35 to rotate, the closing fixture block 35 is firstly pushed against, and at this time, the closing fixture block 35 does not correspond to the empty slot of the pressing plate 38, so that at this time, the closing fixture block 35 drives the closing slider 36 and the closing plate 33 to rotate towards one side of the pressing plate 38, after the closing plate 33 rotates, the plate of the closing plate 33 corresponds to the air passing slot 32, thereby closing the pressure plate 31 and the closing plate 33, after the closing slide block 36 on the plate 33 to be closed is turned to the position of the pressure plate 38, the closing fixture block 35 pushes the closing slide block 36 to contract inwards, the closing slide block 36 moves towards one side of the pressure plate 38, so that the closing plate 33 is clamped, the closing slide block 36 extrudes the pressing plate 38, the pressing plate 38 moves downwards, the guide block 39 is inserted into the pressurizing groove 34, after the closing slide block 36 is completely inserted, the locking block on the locking column 37 locks the closing slide block 36 to prevent the closing slide block 36 from separating, the main shaft 16 continues to rotate, at this time, the pressurizing groove 34 drives the pressurizing plate 31 to move towards the rear side through the guide block 39, thereby compressing and pressurizing the air between the pressurizing plate 31 and the rear end fixed closing plate 41 and improving the bonding efficiency of the dust-containing waste gas and the dust collecting electrode net 24.

As shown in fig. 4, the matching mechanism 4 includes a rear end fixed closing plate 41, the rear end fixed closing plate 41 is installed outside the conveying mechanism 1, a rear end movable closing plate 42 is installed at the rear end of the rear end fixed closing plate 41, a rear end closed sliding strip 43 is installed on the rear side of the rear end movable closing plate 42 corresponding to the spindle 16, the rear end closed sliding strip 43 is an arc-shaped strip, the inner side of the rear end movable closing plate 42 is connected to the rear end fixed closing plate 41 through a return spring, a closing slider 36 is installed at the inner side of the rear end movable closing plate 42, the rear end fixed closing plate 41 is provided with a hollow groove corresponding to the closing slider 36, the spindle 16 drives the rear end closed sliding strip 43 when rotating, so that the rear end closed sliding strip 43 pushes the closing slider 36 of the rear end movable closing plate 42, the rear end movable closing plate 42 is matched and sealed with the rear end fixed closing plate 41, and matches with the front end closed pressurizing plate 31, thereby sealing and pressurizing the exhaust gas.

As shown in fig. 3, the filtering mechanism 2 further includes an intermittent gear 27, the intermittent gear 27 is disposed between the rotating frame 23 and the main shaft 16, a speed change gear 26 is disposed at an upper end of the intermittent gear 27, the speed change gear 26 is fixed on the conveying mechanism 1, a toothed surface ratio of the intermittent gear 27 is fifty percent, and the intermittent gear 27 performs intermittent transmission to intermittently rotate the rotating frame 23, so as to cooperate with the sealed space to adsorb the dust-containing waste gas.

As shown in fig. 3 and 10, the impurity removing mechanism 5 includes a vibration gear 51, the vibration gear 51 is installed at the lower end of the intermittent gear 27, the shaft part of the vibration gear 51 is connected inside the conveying mechanism 1, a knocking block 53 is installed at the rear half part of the vibration gear 51, a vibration strip 52 is installed at the lower side of the knocking block 53, the vibration strip 52 corresponds to the lower half part of the rotating frame 23, the toothed part of the intermittent gear 27 contacts the vibration gear 51, the vibration gear 51 is driven to rotate and then the knocking block 53 is driven to intermittently knock the vibration strip 52, so that the vibration strip 52 vibrates and knocks the rotating frame 23, and the dust collecting electrode net 24 after the breakpoint is vibrated and dedusted.

As shown in fig. 1, the conveying mechanism 1 further includes a sealing barrel 11, four support legs are installed on the sealing barrel 11 in a squatting mode, a dust collecting box 12 is installed between the support legs, an air inlet 13 is installed at an air inlet end of the sealing barrel 11, an air outlet 14 is installed at an air outlet end of the sealing barrel 11, a main shaft 16 is connected with the sealing barrel 11 in a penetrating mode, a motor 15 is installed at a power end of the main shaft 16, and a fixing disc 17 is installed at a position, corresponding to the matching mechanism 4, of the main shaft 16.

As shown in fig. 1, a lead frame 21 is mounted on the outside of the sealing barrel 11 at a position corresponding to the rotary frame 23.

In summary, the waste gas is introduced into the sealing barrel 11 through the air inlet 13, the waste gas is firstly treated by the electrode of the corona net 22 and then charged ions are transmitted to the dust collecting electrode net 24, the dust collecting electrode net 24 on the upper portion adsorbs dust, meanwhile, when the main shaft 16 drives the closing fixture block 35 to rotate, the closing fixture block 35 is firstly pushed against the closing fixture block 35, and at this time, the closing fixture block 35 does not correspond to the empty slot of the pressing plate 38, so that the closing fixture block 35 drives the closing slider 36 and the closing plate 33 to rotate towards the pressing plate 38 side, after the closing plate 33 rotates, the plate of the closing plate 33 corresponds to the air passing slot 32, so that the pressing plate 31 and the closing plate 33 are closed, after the closing slider 36 on the closing plate 33 is turned over to the position of the pressing plate 38, the closing fixture block 35 pushes the closing slider 36 to retract inwards, the closing slider 36 moves towards the pressing plate 38 side, so that the closing slider 36 presses the pressing plate 38 at the closing plate 33, the pressing plate 38 is moved downwards, the guide block 39 is inserted into the pressurizing groove 34, after the closing slide block 36 is completely inserted, the locking block on the locking column 37 locks the closing slide block 36 to avoid the separation of the closing slide block 36, the main shaft 16 continues to rotate, then the pressurizing groove 34 drives the pressurizing plate 31 to move towards the rear side through the guide block 39, so that air between the pressurizing plate 31 and the rear end fixed closing plate 41 is compressed and pressurized, an empirical formula shows that after other conditions are determined, the corona onset voltage changes along with the smoke density, the temperature and the pressure are main factors influencing the smoke density, the smoke density has certain influence on the discharge characteristic and the dust removal performance of the dust remover, if only the influence of the smoke pressure is considered, the discharge voltage and the gas pressure keep a linear (proportional) relationship, under the same other conditions, when the high-pressure gas is purified, the pressure of the electrostatic dust collector is higher than that when the normal-pressure gas is purified, the voltage is high, the dust removal efficiency is also high, the combination efficiency of the dust-containing waste gas and the dust collection electrode net 24 is improved, after the part of waste gas is treated, the rear end closing slide bar 43 continuously rotates, the rear end movable closing plate 42 is opened, the guide block 39 is separated from the pressurizing groove 34, the gas passing groove 32 is reset, the treated waste gas is blown to the rear end by the front end waste gas to carry out the continuous treatment of the subsequent process, the dust is absorbed, after the intermittent gear 27 intermittently drives the rotating frame 23 to rotate through the speed change gear 26, the toothed part of the intermittent gear 27 is contacted with the vibration gear 51, the vibration gear 51 rotates to drive the knocking block 53 to intermittently knock the vibration bar 52, the vibration bar 52 vibrates the knocking rotating frame 23, and the dust collection electrode net 24 after the power failure is vibrated and removed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a dust collector for burner gas, includes conveying mechanism (1) that is used for carrying out centralized processing with dirty waste gas, its characterized in that: the dust-removing device is characterized by further comprising a filtering mechanism (2) used for performing dust treatment on waste gas, a pressurizing mechanism (3) used for pressurizing dust-containing waste gas and a matching mechanism (4) matched with the pressurizing mechanism (3) to be closed, wherein the filtering mechanism (2) is installed inside the conveying mechanism (1), the pressurizing mechanism (3) and the matching mechanism (4) are respectively installed at the front and rear positions of a rotating frame (23) of the filtering mechanism (2), the conveying mechanism (1) comprises a power assembly main shaft (16), and an impurity removing mechanism (5) is installed between the rotating frame (23) and the main shaft (16); the filtering mechanism (2) comprises a corona net (22), the corona net (22) is installed at the air inlet position of the conveying mechanism (1), three groups of rotating frames (23) are arranged on the rear side of the corona net (22), dust collecting electrode nets (24) are evenly installed inside the rotating frames (23), and electrode contacts (25) are installed on the outer sides of the rotating frames (23); the pressurizing mechanism (3) comprises a pressurizing plate (31), the pressurizing plate (31) is arranged on the front side of the rotating frame (23), air passing grooves (32) are uniformly formed in the pressurizing plate (31), and a closing plate (33) is arranged at the rear end of the pressurizing plate (31) on the front side of the rotating frame (23); the bottom of the closing plate (33) and the bottom of the pressurizing plate (31) are tightly attached to the spindle (16), a pressing plate (38) is mounted inside the pressurizing plate (31), the upper end of the pressing plate (38) is connected with the pressurizing plate (31) through a lock column (37), the pressing plate (38) is connected with the pressurizing plate (31) through a return spring, a guide block (39) is mounted at the lower end of the pressing plate (38), the guide block (39) corresponds to a pressurizing groove (34) in the spindle (16), a closing slide block (36) is arranged on the rear side of the pressing plate (38) and located inside the closing plate (33), the closing slide block (36) corresponds to the side of the pressing plate (38) and is an inclined surface which inclines downwards, a closing clamping block (35) is mounted on the side of the closing slide block (36) far away from the pressing plate (38) and located on the spindle (16), and the side of the closing slide block (36) corresponding to the closing clamping block (35) is an inclined surface which inclines towards the closing clamping block (35); cooperation mechanism (4) include rear end fixed closing plate (41), rear end fixed closing plate (41) are installed conveying mechanism (1) outside, rear end movable closing plate (42) are installed to rear end fixed closing plate (41) rear end, rear end movable closing plate (42) rear side corresponds install closed draw runner (43) of rear end on main shaft (16), closed draw runner (43) of rear end are the arc rectangular, rear end movable closing plate (42) inboard is connected through reset spring rear end fixed closing plate (41), closed slider (36) are installed to rear end movable closing plate (42) inboard position, rear end fixed closing plate (41) correspond closed slider (36) are provided with the dead slot.

2. The dust removing device for furnace gas as claimed in claim 1, wherein: the filtering mechanism (2) further comprises an intermittent gear (27), the intermittent gear (27) is arranged between the rotating frame (23) and the main shaft (16), a speed change gear (26) is arranged at the upper end of the intermittent gear (27), the speed change gear (26) is fixed on the conveying mechanism (1), and the toothed face proportion of the intermittent gear (27) is fifty percent.

3. The dust removing device for furnace gas as claimed in claim 2, wherein: edulcoration mechanism (5) are including vibrations gear (51), vibrations gear (51) are installed intermittent type gear (27) lower extreme, vibrations gear (51) shaft body part is connected conveying mechanism (1) is inside, vibrations gear (51) latter half is installed and is strikeed piece (53), it installs and vibrates strip (52) to strike piece (53) downside, it corresponds to vibrate strip (52) swivel mount (23) the latter half.

4. The dust removing device for furnace gas as claimed in claim 1, wherein: conveying mechanism (1) is still including sealed bucket (11), four landing legs are installed in squat down of sealed bucket (11), install dust collection box (12) between the landing leg, air intake (13) are installed to sealed bucket (11) inlet end, air outlet (14) are installed to sealed bucket (11) the end of giving vent to anger, main shaft (16) through connection sealed bucket (11), motor (15) are installed to main shaft (16) power end, main shaft (16) correspond fixed disk (17) are installed to cooperation mechanism (4) position.

5. The dust removing device for furnace gas as claimed in claim 4, wherein: and a lead frame (21) is arranged at the position, corresponding to the rotating frame (23), outside the sealing barrel (11).