CN110870999A - Combined dust removal device for smelting furnace and use method thereof - Google Patents
Combined dust removal device for smelting furnace and use method thereof Download PDFInfo
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- CN110870999A CN110870999A CN201911134699.XA CN201911134699A CN110870999A CN 110870999 A CN110870999 A CN 110870999A CN 201911134699 A CN201911134699 A CN 201911134699A CN 110870999 A CN110870999 A CN 110870999A
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- flue gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
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- 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
- B01D53/346—Controlling the process
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- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/025—Other waste gases from metallurgy plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a combined dust removal device for a smelting furnace, which comprises an air inlet pipe, a dust removal mechanism and a purification tank, wherein the air inlet end of the air inlet pipe is connected with the air outlet end of the smelting furnace, the air outlet end of the air inlet pipe is connected with the air inlet end of an air guiding pipe, the air outlet end of the air guiding pipe is connected with the air inlet end of the dust removal mechanism, the air outlet end of the dust removal mechanism is connected with the air inlet end of a connecting pipe, the air outlet end of the connecting pipe is connected with the air inlet end of a ventilating pipe, the top of the ventilating pipe is provided with an exhaust pipe, the exhaust pipe is provided with a three-way electromagnetic valve and is; the outer wall of the first dust removing pipe close to one end of the opening is sleeved with a first connecting lug, the outer wall of the second dust removing pipe close to one end of the opening is sleeved with a second connecting lug, and the first connecting lug is connected with the second connecting lug through a connecting assembly; the invention has the advantages of improving the working efficiency of the filter screen, being convenient to disassemble the exhaust pipeline and replacing the filter screen.
Description
Technical Field
The invention belongs to the technical field of smelting furnaces, relates to a combined dust removal device and a using method thereof, and particularly relates to a combined dust removal device for a smelting furnace and a using method thereof.
Background
The combined dust removal device of the smelting furnace is used for removing particulate impurities in flue gas and purifying tail gas generated during the working of the smelting furnace.
In the prior art, when the flue gas of a smelting furnace is filtered and solid wastes in the flue gas are removed, the filtering efficiency of a filter screen is low and the effective service time of the filter screen is short, so that the times of cleaning the filter screen by workers when disassembling a smoke exhaust pipeline are increased, and the labor force of the workers is improved; when the smelting furnace is stopped suddenly, negative pressure is generated, and solid impurities falling into the end part of the first dust removal pipe are refluxed into a smoke exhaust pipeline of the smelting furnace; the smoke exhaust pipeline in the existing smelting furnace is installed through the matching between the flange and the fastening bolt, so that when the filter screen is replaced by disassembling the pipeline, workers need to manually disassemble the pipeline one by one, and the problems of wasting a lot of time and physical power when the filter screen is replaced are solved.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, when the flue gas of a smelting furnace is filtered and the solid waste in the flue gas is removed, the filtering efficiency of a filter screen is low and the effective service time of the filter screen is short, so that the times of cleaning the filter screen by workers when disassembling a smoke exhaust pipeline are increased, and the labor force of the workers is improved; when the smelting furnace is stopped suddenly, negative pressure is generated, and solid impurities falling into the end part of the first dust removal pipe are refluxed into a smoke exhaust pipeline of the smelting furnace; the smoke exhaust pipeline in the existing smelting furnace is installed through the matching between the flange and the fastening bolt, so that when the filter screen is replaced by disassembling the pipeline, workers need to manually disassemble the pipeline one by one, and the problem that a lot of time and physical force are wasted when the filter screen is replaced is solved.
The purpose of the invention can be realized by the following technical scheme:
a combined dust removal device for a smelting furnace comprises an air inlet pipe, a dust removal mechanism and a purification tank, wherein the air inlet end of the air inlet pipe is connected with the air outlet end of the smelting furnace, the air outlet end of the air inlet pipe is connected with the air inlet end of an air guiding pipe, the air outlet end of the air guiding pipe is connected with the air inlet end of the dust removal mechanism, the air outlet end of the dust removal mechanism is connected with the air inlet end of a connecting pipe, the air outlet end of the connecting pipe is connected with the air inlet end of a ventilating pipe, the air outlet end of the ventilating pipe extends to a position below the liquid level of the purification tank, an exhaust pipe is arranged at the top of the ventilating pipe, a three-way electromagnetic valve is;
dust removal mechanism includes first dust removal pipe, first engaging lug, seal ring, the second engaging lug, coupling assembling, second dust removal pipe and expansion hose, first dust removal pipe and second dust removal pipe are one end open-ended hollow structure, first engaging lug and second engaging lug are the annular plate structure, first dust removal pipe is kept away from open-ended one end and is passed through communicating pipe and the end connection of giving vent to anger of induced duct, open-ended one end is kept away from to the second dust removal pipe and is connected with the inlet end of connecting pipe, the cover is equipped with first engaging lug on the outer wall that first dust removal pipe is close to opening one end, the cover is equipped with the second engaging lug on the outer wall that second dust removal pipe is close to opening one end, first engaging lug passes through coupling assembling and is connected with the second engaging lug, the junction of first dust removal pipe and second dust removal pipe is provided with seal ring, be provided with expansion hose.
Preferably, coupling assembling includes inserted bar and solid fixed ring, and inserted bar annular array is provided with the multiunit, and the inserted bar installs on the second engaging lug, correspond on the first engaging lug be provided with the jack of inserted bar looks adaptation, first engaging lug keep away from on the lateral wall of second engaging lug be provided with the solid fixed ring of inserted bar looks adaptation, be provided with in the solid fixed ring with the through-hole of inserted bar looks adaptation, be provided with the installed part in the solid fixed ring.
Preferably, the installed part includes the operation panel, first spring, the trapezoidal piece, the stopper, fly leaf and second spring, the through-hole both sides that are located solid fixed ring are provided with the mounting groove respectively, it is provided with the trapezoidal piece to slide in the mounting groove, one side that the trapezoidal piece is close to the through-hole is provided with the stopper, be provided with the spacing hole with stopper looks adaptation on the inserted bar, one side that the through-hole was kept away from to the trapezoidal piece is provided with first spring, the other end and the interior wall connection of mounting groove of first spring, it is provided with the fly leaf to slide on the inclined plane of trapezoidal piece, the other end of fly leaf extends to solid fixed ring's the outside, and with solid fixed ring sliding connection, the other end and the operation panel of fly leaf are connected, be provided.
Preferably, the diameter of the end, close to the induced duct, of the first dust removal pipe is larger than the diameter of the end, far away from the induced duct, of the first dust removal pipe, a sealing plate is detachably mounted on the bottom surface of the first dust removal pipe, a gas collecting hood is arranged on the inner wall of the first dust removal pipe and communicated with the induced duct through a communicating pipe, the diameter of the gas collecting hood is smaller than the inner diameter of the first dust removal pipe, and a filter screen is arranged on the inner wall, close to the first dust removal pipe, of the second dust removal pipe.
Preferably, be provided with the draught fan in the induced duct, be provided with the filling tube on the top of purifying tank, the bottom of purifying tube is provided with the discharging pipe, is provided with the flue gas monitor on the blast pipe, flue gas monitor and three-way solenoid valve communication connection.
Preferably, be provided with rabbling mechanism in the purifying tank, the rabbling mechanism includes agitator motor, (mixing) shaft and stirring rake, and agitator motor installs on the top surface of purifying tank, and agitator motor's output and agitator shaft connection, and the bottom of (mixing) shaft extends to the bottom in the purifying pipe, is provided with the stirring rake on the bottom of (mixing) shaft.
A use method of a combined dust removal device for a smelting furnace comprises the following steps:
s1, adding a flue gas reaction liquid into the purification tank through a charging pipe, and then starting a draught fan and a stirring motor in an induced draft pipe to work, so that under the action of the draught fan, flue gas generated during the working of the smelting furnace sequentially passes through an air inlet pipe and the induced draft pipe and enters a dust removal mechanism, and a filter screen in a second dust removal pipe filters solid impurities such as dust in the flue gas;
s2, the filtered flue gas is introduced into a purification tank along a connecting pipe and a vent pipe, the flue gas and the flue gas reaction liquid can fully react and contact under the action of a stirring shaft and a stirring paddle driven by the operation of a stirring motor, then the purified flue gas is discharged along the vent pipe, a flue gas monitor on the vent pipe monitors the content of harmful gas in the flue gas, when the discharge parameter is not reached, the flue gas monitor transmits the signal to a three-way electromagnetic valve and controls the opening and closing of the three-way electromagnetic valve, so that the flue gas enters the vent pipe along a circulating pipe and continues to react with the purification tank, and the flue gas is discharged up to the standard;
s3, work for a long time when the filter screen, make the filtration efficiency of filter screen reduce, when needing to dismantle the filter screen and change, through pressing the operation panel on the solid fixed ring, make the operation panel drive the fly leaf and move, the fly leaf makes the trapezoidal piece remove to both sides respectively, make the stopper move to the mounting groove from the spacing hole in the inserted bar, thereby make first engaging lug and the separation of second engaging lug, and then make first dust removal pipe and the separation of second dust removal pipe, take off the filter screen in the first dust removal pipe and change, when changing the back, will press the operation panel once more, make the stopper be located the mounting groove, then insert the back with the inserted bar on the second engaging lug along the jack on the first engaging lug and the through-hole of solid fixed ring, release external force on the operation panel can.
Compared with the prior art, the invention has the beneficial effects that:
adding a flue gas reaction liquid into the purification tank through a charging pipe, and then starting an induced draft fan and a stirring motor in an induced draft pipe to work, so that under the action of the induced draft fan, flue gas generated during the working of the smelting furnace sequentially passes through an air inlet pipe and the induced draft pipe and enters a dust removal mechanism, and a filter screen in a second dust removal pipe filters solid impurities such as dust in the flue gas; the solid on the filter screen enables partial solid impurities to fall into the end part of the first dust removal pipe under the action of gravity, so that the effect of storing the solid impurities is achieved, the filtering efficiency of the filter screen and the service time of the filter screen are improved, the frequency of replacing and cleaning the filter screen is reduced, and the gas collecting hood can prevent the phenomenon that the smelting furnace generates negative pressure when being suddenly stopped and the solid impurities falling into the end part of the first dust removal pipe flow back into a smoke exhaust pipeline of the smelting furnace in the filtering process;
the filtered flue gas is introduced into the purification tank along the connecting pipe and the vent pipe, the flue gas and the flue gas reaction liquid can be fully in reaction contact under the action of the stirring shaft and the stirring paddle driven by the operation of the stirring motor, then the purified flue gas is discharged along the vent pipe, the content of harmful gas in the flue gas is monitored by a flue gas monitor on the vent pipe, when the discharge parameter is not reached, the flue gas monitor transmits the signal to the three-way electromagnetic valve and controls the three-way electromagnetic valve to be opened and closed, so that the flue gas enters the vent pipe along the circulating pipe and continues to react with the purification tank, and the flue gas is discharged up to the standard;
when the filter screen works for a long time, the filtering efficiency of the filter screen is reduced, and the filter screen needs to be disassembled and replaced, the operating plate drives the movable plate to move by pressing the operating plate on the fixed ring, the movable plate enables the trapezoidal blocks to move towards two sides respectively, the limiting blocks move into the mounting grooves from the limiting holes in the insertion rods, so that the first connecting lugs and the second connecting lugs are separated, the first dust removing pipe and the second dust removing pipe are further separated, the filter screen in the first dust removing pipe is taken down and replaced, after the replacement is completed, the operating plate is pressed again, the limiting blocks are positioned in the mounting grooves, the insertion rods on the second connecting lugs are inserted into the insertion holes on the first connecting lugs and the through holes of the fixed ring, and then the external force on the operating plate is released, so that the disassembly and the installation of the smoke exhaust pipeline in the smelting furnace are facilitated, and the filter screen in the smoke exhaust pipeline is further replaced conveniently, the filtering efficiency of the filter screen is improved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic structural view of the connection relationship between the induced draft tube and the dust removing mechanism according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3A of the present invention;
FIG. 5 is a schematic view of a first connecting lug according to the present invention;
FIG. 6 is a schematic view of the construction of the mounting member of the present invention;
fig. 7 is a schematic view of the structure of the purification tank of the present invention.
In the figure: 1. an air inlet pipe; 2. an induced draft pipe; 3. a first dust removal pipe; 4. a first connecting lug; 5. a sealing gasket; 6. a second engaging lug; 7. a connecting assembly; 8. a second dust removal pipe; 9. a flexible hose; 10. a connecting pipe; 11. a breather pipe; 12. a feed tube; 13. a purification tank; 14. a discharge pipe; 15. a stirring motor; 16. an exhaust pipe; 17. a circulation pipe; 18. a flue gas monitor; 19. a three-way electromagnetic valve; 20. an induced draft fan; 21. a gas-collecting hood; 22. a filter screen; 23. inserting a rod; 24. a fixing ring; 25. an operation panel; 26. mounting grooves; 27. a first spring; 28. a trapezoidal block; 29. a limiting block; 30. a movable plate; 31. a second spring; 32. a stirring shaft; 33. and (4) a stirring paddle.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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.
Referring to fig. 1-7, a combined dust removing device for a smelting furnace comprises an air inlet pipe 1, a dust removing mechanism and a purifying tank 13, wherein the air inlet end of the air inlet pipe 1 is connected with the air outlet end of the smelting furnace, the air outlet end of the air inlet pipe 1 is connected with the air inlet end of an air guiding pipe 2, the air outlet end of the air guiding pipe 2 is connected with the air inlet end of the dust removing mechanism, the air outlet end of the dust removing mechanism is connected with the air inlet end of a connecting pipe 10, the air outlet end of the connecting pipe 10 is connected with the air inlet end of a ventilating pipe 11, the air outlet end of the ventilating pipe 11 extends to a position below the liquid level of the purifying tank 13, an exhaust pipe 16 is arranged at the top of the ventilating pipe 11, a three-way electromagnetic valve 19 is arranged on the;
the dust removing mechanism comprises a first dust removing pipe 3, a first connecting lug 4 and a sealing gasket 5, second engaging lug 6, coupling assembling 7, second dust removal pipe 8 and expansion hose 9, first dust removal pipe 3 and second dust removal pipe 8 are one end open-ended hollow structure, first engaging lug 4 and second engaging lug 6 are the annular plate structure, first dust removal pipe 3 is kept away from open-ended one end and is passed through communicating pipe and induced duct 2's the end connection of giving vent to anger, open-ended one end is kept away from to second dust removal pipe 8 and is connected with the inlet end of connecting pipe 10, the cover is equipped with first engaging lug 4 on the outer wall that first dust removal pipe 3 is close to open-ended one end, the cover is equipped with second engaging lug 6 on the outer wall that second dust removal pipe 8 is close to open-ended one end, first engaging lug 4 is connected with second engaging lug 6 through coupling assembling 7, first dust removal pipe 3 is provided with seal ring 5 with second dust removal pipe 8's junction, be provided with expansion hose 9 on the connecting.
Coupling assembling 7 includes inserted bar 23 and solid fixed ring 24, and inserted bar 23 annular array is provided with the multiunit, and inserted bar 23 installs on second engaging lug 6, correspond on first engaging lug 4 be provided with the jack of inserted bar 23 looks adaptation, first engaging lug 4 is provided with the solid fixed ring 24 with inserted bar 23 looks adaptation on keeping away from the lateral wall of second engaging lug 6, be provided with in the solid fixed ring 24 with the through-hole of inserted bar 23 looks adaptation, be provided with the installed part in the solid fixed ring 24.
The mounting part comprises an operating plate 25, a first spring 27, a trapezoidal block 28, a limiting block 29, a movable plate 30 and a second spring 31, mounting grooves 26 are respectively arranged at two sides of a through hole of the fixing ring 24, the trapezoidal block 28 is arranged in the mounting grooves 26 in a sliding manner, the limiting block 29 is arranged at one side of the trapezoidal block 28 close to the through hole, a limiting hole matched with the limiting block 29 is arranged on the inserted link 23, the first spring 27 is arranged at one side of the trapezoidal block 28 far away from the through hole, the other end of the first spring 27 is connected with the inner wall of the mounting grooves 26, the movable plate 30 is arranged on the inclined plane of the trapezoidal block 28 in a sliding manner, the other end of the movable plate 30 extends to the outer side of the fixing ring 24 and is connected with the fixing ring 24 in a sliding manner, the other end of the movable plate 30 is connected with the operating plate 25, the second spring 31 is, when the filter screen 22 needs to be detached and replaced, the operating plate 25 on the fixing ring 24 is pressed to drive the movable plate 30 to move, the movable plate 30 causes the trapezoidal blocks 28 to move towards two sides respectively, the limiting blocks 29 move into the mounting grooves 26 from the limiting holes in the insertion rods 23, so that the first connecting lugs 4 and the second connecting lugs 6 are separated, the first dust removing pipes 3 and the second dust removing pipes 8 are separated, the filter screen 22 in the second dust removing pipes 8 is taken down and replaced, after the replacement is completed, the operating plate 25 is pressed again according to the same principle, the insertion rods 23 on the second connecting lugs 6 are inserted into the insertion holes on the first connecting lugs 4 and the through holes of the fixing ring 24, and external force on the operating plate 25 is released, so that the smoke exhaust pipeline in the smelting furnace is convenient to detach and install, thereby being convenient for replacing the filter screen 22 in the smoke exhaust pipeline and improving the filtering efficiency of the filter screen 22.
The diameter that first dust removal pipe 3 is close to the one end of induced duct 2 is greater than the one end diameter that first dust removal pipe 3 kept away from induced duct 2, demountable installation has the closing plate on the bottom surface of first dust removal pipe 3, be provided with gas collecting channel 21 on the inner wall of first dust removal pipe 3, gas collecting channel 21 communicates with induced duct 2 through communicating pipe, the diameter of gas collecting channel 21 is less than the internal diameter of first dust removal pipe 3, second dust removal pipe 8 is provided with filter screen 22 on being close to the inner wall of first dust removal pipe 3, can follow first dust removal pipe 3 through the closing plate that sets up and dismantle, thereby conveniently clear up the solid impurity of gathering in the first dust removal pipe 3 tip.
Be provided with draught fan 20 in the induced duct 2, be provided with filling tube 12 on the top of purifying tank 13, the bottom of purifying tank 13 is provided with discharging pipe 14, be provided with flue gas monitor 18 on the blast pipe 16, flue gas monitor 18 and three solenoid valve 19 communication connection, flue gas monitor 18 on the blast pipe 16 monitors the content of harmful gas in the flue gas, when not reaching the parameter of emission, flue gas monitor 18 gives this signal to three solenoid valve 19, and control opening and shutting of three solenoid valve 19, make the flue gas enter into in the breather pipe 11 along circulating pipe 17, continue with purifying tank 13 reaction treatment, make the flue gas discharge up to standard.
Be provided with rabbling mechanism in the purification tank 13, the rabbling mechanism includes agitator motor 15, (mixing) shaft 32 and stirring rake 33, agitator motor 15 is installed on the top surface of purification tank 13, and agitator motor 15's output and (mixing) shaft 32 are connected, the bottom of (mixing) shaft 32 extends to the bottom in the purification tank 13, be provided with stirring rake 33 on the bottom of (mixing) shaft 32, under agitator motor 15 work drive (mixing) shaft 32 and stirring rake 33's effect, make flue gas and flue gas reaction liquid can fully carry out the reaction contact.
A use method of a combined dust removal device for a smelting furnace comprises the following steps:
s1, adding flue gas reaction liquid into the purification tank 13 through the feeding pipe 12, and then starting the induced draft fan 20 and the stirring motor 15 in the induced draft pipe 2 to work, so that under the action of the induced draft fan 20, flue gas generated during the working of the smelting furnace sequentially passes through the air inlet pipe 1 and the induced draft pipe 2 to enter the dust removal mechanism, and the filter screen 22 in the second dust removal pipe 8 filters solid impurities such as dust in the flue gas;
s2, introducing the filtered flue gas into a purification tank 13 along a connecting pipe 10 and a vent pipe 11, enabling the flue gas to be in full reaction contact with flue gas reaction liquid under the action of a stirring shaft 32 and a stirring paddle 33 driven by a stirring motor 15, then discharging the purified flue gas along an exhaust pipe 16, monitoring the content of harmful gas in the flue gas by a flue gas monitor 18 on the exhaust pipe 16, transmitting a signal to a three-way electromagnetic valve 19 by the flue gas monitor 18 when the discharge parameter is not reached, controlling the three-way electromagnetic valve 19 to open and close, enabling the flue gas to enter the vent pipe 11 along a circulating pipe 17, and continuing to react with the purification tank 13 to enable the flue gas to be discharged up to the standard;
s3, when the filter screen 22 works for a long time, the filtering efficiency of the filter screen 22 is reduced, and the filter screen 22 needs to be disassembled for replacement, by pressing the operation board 25 on the fixing ring 24, the operation board 25 drives the movable board 30 to move, the movable board 30 makes the trapezoidal blocks 28 move to both sides respectively, the limiting blocks 29 move into the mounting grooves 26 from the limiting holes in the insertion rods 23, so that the first connection lugs 4 and the second connection lugs 6 are separated, and further the first dust removal pipes 3 and the second dust removal pipes 8 are separated, the filter screen 22 in the first dust removal pipes 3 is taken down for replacement, after replacement, the operation board 25 is pressed again, so that the limiting blocks 29 are located in the mounting grooves 26, and then the insertion rods 23 on the second connection lugs 6 are inserted into the insertion holes on the first connection lugs 4 and the through holes of the fixing ring 24, and then the external force on the operation board 25 is released.
The working principle of the invention is as follows: adding a flue gas reaction liquid into a purification tank 13 through a charging pipe 12, then starting an induced draft fan 20 and a stirring motor 15 in an induced draft pipe 2 to work, so that under the action of the induced draft fan 20, flue gas generated during the working of a smelting furnace sequentially passes through an air inlet pipe 1 and the induced draft pipe 2 and enters a dust removal mechanism, and a filter screen 22 in a second dust removal pipe 8 filters solid impurities such as dust in the flue gas; the solid on the filter screen 22 causes part of the solid impurities to fall into the end part of the first dust removal pipe 3 under the action of gravity, thereby playing a role of storing the solid impurities, improving the filtering efficiency of the filter screen 22 and the service time of the filter screen 22, reducing the times of replacing and cleaning the filter screen 22, and preventing the phenomenon that the smelting furnace generates negative pressure when suddenly stopping and the solid impurities falling into the end part of the first dust removal pipe 3 flow back into a smoke exhaust pipeline of the smelting furnace in the filtering process of the gas collecting hood 21;
the filtered flue gas is introduced into a purification tank 13 along a connecting pipe 10 and a vent pipe 11, the flue gas and the flue gas reaction liquid can be fully reacted and contacted under the action of a stirring shaft 32 and a stirring paddle 33 driven by a stirring motor 15, then the purified flue gas is discharged along a vent pipe 16, a flue gas monitor 18 on the vent pipe 16 monitors the content of harmful gas in the flue gas, when the discharge parameter is not reached, the flue gas monitor 18 transmits the signal to a three-way electromagnetic valve 19 and controls the three-way electromagnetic valve 19 to open and close, so that the flue gas enters the vent pipe 11 along a circulating pipe 17 and continues to react with the purification tank 13, and the flue gas is discharged up to the standard;
when the filter screen 22 works for a long time, so that the filtering efficiency of the filter screen 22 is reduced, and the filter screen 22 needs to be disassembled for replacement, the operation plate 25 on the fixing ring 24 is pressed to drive the movable plate 30 to move, the movable plate 30 enables the trapezoidal blocks 28 to move towards two sides respectively, the limiting blocks 29 move into the mounting grooves 26 from the limiting holes in the inserting rods 23, so that the first connecting lugs 4 and the second connecting lugs 6 are separated, the first dust removing pipes 3 and the second dust removing pipes 8 are separated, the filter screen 22 in the first dust removing pipes 3 is taken down for replacement, after the replacement is completed, the operation plate 25 is pressed again to enable the limiting blocks 29 to be positioned in the mounting grooves 26, then the inserting rods 23 on the second connecting lugs 6 are inserted into the inserting holes on the first connecting lugs 4 and the through holes of the fixing ring 24, the external force on the operation plate 25 is released, and therefore, the convenience in disassembling and installing of the smoke exhaust pipeline in the smelting furnace is realized, thereby being convenient for replacing the filter screen 22 in the smoke exhaust pipeline and improving the filtering efficiency of the filter screen 22.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides a combination dust collector for smelting furnace which characterized in that: the device comprises an air inlet pipe (1), a dust removing mechanism and a purifying tank (13), wherein the air inlet end of the air inlet pipe (1) is connected with the air outlet end of a smelting furnace, the air outlet end of the air inlet pipe (1) is connected with the air inlet end of an air guiding pipe (2), the air outlet end of the air guiding pipe (2) is connected with the air inlet end of the dust removing mechanism, the air outlet end of the dust removing mechanism is connected with the air inlet end of a connecting pipe (10), the air outlet end of the connecting pipe (10) is connected with the air inlet end of a ventilating pipe (11), the air outlet end of the ventilating pipe (11) extends to a position below the liquid level of the purifying tank (13), an exhaust pipe (16) is arranged at the top of the ventilating pipe (11), a three-way electromagnetic valve (19) is arranged on the exhaust pipe (16) and is connected with a circulating pipe;
the dust removing mechanism comprises a first dust removing pipe (3), a first connecting lug (4), a sealing washer (5), a second connecting lug (6), a connecting assembly (7), a second dust removing pipe (8) and a telescopic hose (9), wherein the first dust removing pipe (3) and the second dust removing pipe (8) are both of hollow structures with one ends open, the first connecting lug (4) and the second connecting lug (6) are both of annular plate structures, one end, far away from the opening, of the first dust removing pipe (3) is connected with the air outlet end of the induced air pipe (2) through a communicating pipe, one end, far away from the opening, of the second dust removing pipe (8) is connected with the air inlet end of the connecting pipe (10), the first connecting lug (4) is sleeved on the outer wall, close to the opening end, of the first dust removing pipe (3), the second connecting lug (6) is sleeved on the outer wall, close to the opening end, of the second dust removing pipe (8), the first connecting lug (4) is connected with the second connecting lug (, a sealing washer (5) is arranged at the joint of the first dust removal pipe (3) and the second dust removal pipe (8), and a flexible hose (9) is arranged on the connecting pipe (10).
2. The combined dust removal device for the smelting furnace according to claim 1, wherein the connecting assembly (7) comprises a plurality of groups of insert rods (23) and fixing rings (24), the insert rods (23) are arranged in an annular array and are mounted on the second connecting lugs (6), the first connecting lugs (4) are correspondingly provided with insertion holes matched with the insert rods (23), the side walls, away from the second connecting lugs (6), of the first connecting lugs (4) are provided with the fixing rings (24) matched with the insert rods (23), the fixing rings (24) are internally provided with through holes matched with the insert rods (23), and the fixing rings (24) are internally provided with mounting pieces.
3. The combined dust removal device for the smelting furnace according to claim 2, wherein the mounting part comprises an operating plate (25), a first spring (27), a trapezoidal block (28), a limiting block (29), a movable plate (30) and a second spring (31), mounting grooves (26) are respectively formed in two sides of a through hole of the fixing ring (24), the trapezoidal block (28) is slidably arranged in the mounting grooves (26), the limiting block (29) is arranged on one side, close to the through hole, of the trapezoidal block (28), a limiting hole matched with the limiting block (29) is formed in the insertion rod (23), the first spring (27) is arranged on one side, far away from the through hole, of the trapezoidal block (28), the other end of the first spring (27) is connected with the inner wall of the mounting groove (26), the movable plate (30) is slidably arranged on the inclined plane of the trapezoidal block (28), and the other end of the movable plate (30) extends to, and is connected with the fixed ring (24) in a sliding way, the other end of the movable plate (30) is connected with the operating plate (25), the movable plate (30) is provided with a second spring (31), and the two ends of the second spring (31) are respectively connected with the outer wall of the fixed ring (24) and the operating plate (25).
4. The combined dust removal device for the smelting furnace according to claim 1, wherein the diameter of one end of the first dust removal pipe (3) close to the air guide pipe (2) is larger than that of one end of the first dust removal pipe (3) far away from the air guide pipe (2), a sealing plate is detachably mounted on the bottom surface of the first dust removal pipe (3), a gas collecting hood (21) is arranged on the inner wall of the first dust removal pipe (3), the gas collecting hood (21) is communicated with the air guide pipe (2) through a communicating pipe, the diameter of the gas collecting hood (21) is smaller than the inner diameter of the first dust removal pipe (3), and a filter screen (22) is arranged on the inner wall of the second dust removal pipe (8) close to the first dust removal pipe (3).
5. The combined dust removal device for the smelting furnace according to claim 1, wherein an induced draft fan (20) is arranged in the induced draft tube (2), a feeding tube (12) is arranged on the top of the purification tank (13), a discharging tube (14) is arranged at the bottom of the purification tank (13), a flue gas monitor (18) is arranged on the discharging tube (16), and the flue gas monitor (18) is in communication connection with a three-way electromagnetic valve (19).
6. The combined dust removal device for the smelting furnace according to claim 1, wherein a stirring mechanism is arranged in the purification tank (13), the stirring mechanism comprises a stirring motor (15), a stirring shaft (32) and a stirring paddle (33), the stirring motor (15) is installed on the top surface of the purification tank (13), the output end of the stirring motor (15) is connected with the stirring shaft (32), the bottom end of the stirring shaft (32) extends to the bottom in the purification tank (13), and the stirring paddle (33) is arranged on the bottom of the stirring shaft (32).
7. Use method of a combined dust removal device for a smelting furnace according to any one of claims 1 to 6, characterized in that the use method of the combined dust removal device comprises the following steps:
s1, adding a flue gas reaction liquid into the purification tank (13) through the feeding pipe (12), then starting the induced draft fan (20) and the stirring motor (15) in the induced draft pipe (2) to work, so that under the action of the induced draft fan (20), flue gas generated during the working of the smelting furnace sequentially passes through the air inlet pipe (1) and the induced draft pipe (2) and enters the dust removal mechanism, and a filter screen (22) in the second dust removal pipe (8) filters solid impurities such as dust in the flue gas;
s2, introducing the filtered flue gas into a purification tank (13) along a connecting pipe (10) and a vent pipe (11), reacting the flue gas with flue gas reaction liquid under the action of a stirring shaft (32) and a stirring paddle (33) driven by a stirring motor (15) to discharge the purified flue gas along an exhaust pipe (16), monitoring the content of harmful gas in the flue gas by a flue gas monitor (18) on the exhaust pipe (16), transmitting a signal to a three-way electromagnetic valve (19) by the flue gas monitor (18) when the discharge parameter is not reached, controlling the opening and closing of the three-way electromagnetic valve (19), allowing the flue gas to enter the vent pipe (11) along a circulating pipe (17), continuing to react with the purification tank (13), and discharging the flue gas until the flue gas reaches the standard;
s3, when the filter screen (22) works for a long time and the filter screen (22) needs to be detached for replacement, the operating plate (25) on the fixing ring (24) is pressed to drive the movable plate (30) to move, the movable plate (30) enables the trapezoidal blocks (28) to move towards two sides respectively, the limiting blocks (29) move into the mounting grooves (26) from the limiting holes in the inserting rods (23), so that the first connecting lugs (4) and the second connecting lugs (6) are separated, the first dust removing pipes (3) and the second dust removing pipes (8) are separated, the filter screen (22) in the second dust removing pipes (8) is taken down for replacement, after replacement, the operating plate (25) is pressed again to enable the limiting blocks (29) to be positioned in the mounting grooves (26), and then the inserting rods (23) on the second connecting lugs (6) are inserted into the through holes of the fixing ring (24) and the first connecting lugs (4), the external force on the operation plate (25) is released.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911134699.XA CN110870999A (en) | 2019-11-19 | 2019-11-19 | Combined dust removal device for smelting furnace and use method thereof |
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| CN201911134699.XA CN110870999A (en) | 2019-11-19 | 2019-11-19 | Combined dust removal device for smelting furnace and use method thereof |
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| CN201911134699.XA Pending CN110870999A (en) | 2019-11-19 | 2019-11-19 | Combined dust removal device for smelting furnace and use method thereof |
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| CN113218190A (en) * | 2021-04-01 | 2021-08-06 | 青海湘和有色金属有限责任公司 | Oxygen supply device for stabilizing oxygen supply of oxygen-enriched side-blown converter and use method thereof |
| CN114636315A (en) * | 2022-03-11 | 2022-06-17 | 顺博铝合金湖北有限公司 | Environment-friendly smelting device and method for controlling recyclable waste gas based on internet |
| CN117138573A (en) * | 2023-10-27 | 2023-12-01 | 南京东南工业装备股份有限公司 | Combustion tail gas treatment device and treatment system |
| CN117308624A (en) * | 2023-11-28 | 2023-12-29 | 济南瑞泰炉窑设备安装有限公司 | Smelting furnace flue gas collection device convenient to clean |
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| CN113218190A (en) * | 2021-04-01 | 2021-08-06 | 青海湘和有色金属有限责任公司 | Oxygen supply device for stabilizing oxygen supply of oxygen-enriched side-blown converter and use method thereof |
| CN114636315A (en) * | 2022-03-11 | 2022-06-17 | 顺博铝合金湖北有限公司 | Environment-friendly smelting device and method for controlling recyclable waste gas based on internet |
| CN114636315B (en) * | 2022-03-11 | 2023-11-17 | 顺博铝合金湖北有限公司 | Environment-friendly smelting device and method capable of recycling waste gas based on internet control |
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| CN117138573B (en) * | 2023-10-27 | 2024-01-23 | 南京东南工业装备股份有限公司 | Combustion tail gas treatment device and treatment system |
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Application publication date: 20200310 |