CN110551896B - Medium frequency furnace smelting production line with dust removal function - Google Patents
Medium frequency furnace smelting production line with dust removal function Download PDFInfo
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- CN110551896B CN110551896B CN201910867671.0A CN201910867671A CN110551896B CN 110551896 B CN110551896 B CN 110551896B CN 201910867671 A CN201910867671 A CN 201910867671A CN 110551896 B CN110551896 B CN 110551896B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/08—Apparatus
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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
- F27D17/10—Arrangements for using waste heat
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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
- F27D17/20—Arrangements for treatment or cleaning of waste gases
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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
- F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
本发明公开了一种具有除尘功能的中频炉熔炼生产线；属于金属熔炼技术领域；其技术要点包括熔炼平台，在熔炼平台端部设置有中频炉，在中频炉外侧的地基上设置有出料槽，在中频炉和出料槽外围设置有除尘室；在中频炉侧边的熔炼平台内设置有安装室，在安装室内设置有负压风机，负压风机连接引尘结构；在熔炼平台外围的地基上沿周向设置有环形水渠，在熔炼平台底部设置有导通负压风机出风口和环形水渠的连接暗渠；在环形水渠水面上方设有高压水管，在高压水管上间隔均布有若干雾化喷头；本发明旨在提供一种结构巧妙、合理，使用方便且除尘效果良好的具有除尘功能的中频炉熔炼生产线；用于金属熔炼。
The invention discloses a medium frequency furnace smelting production line with a dust removal function; it belongs to the technical field of metal smelting; its technical points include a smelting platform, a medium frequency furnace is arranged at the end of the smelting platform, a discharge trough is arranged on the foundation outside the medium frequency furnace, and a dust removal chamber is arranged outside the medium frequency furnace and the discharge trough; an installation room is arranged in the smelting platform on the side of the medium frequency furnace, a negative pressure fan is arranged in the installation room, and the negative pressure fan is connected to a dust suction structure; an annular water channel is arranged circumferentially on the foundation outside the smelting platform, and a connecting dark channel for conducting the air outlet of the negative pressure fan and the annular water channel is arranged at the bottom of the smelting platform; a high-pressure water pipe is arranged above the water surface of the annular water pipe, and a plurality of atomizing nozzles are evenly distributed on the high-pressure water pipe at intervals; the invention aims to provide a medium frequency furnace smelting production line with a dust removal function, which has an ingenious and reasonable structure, is easy to use and has a good dust removal effect; it is used for metal smelting.
Description
Technical Field
The invention relates to an intermediate frequency furnace smelting production line, in particular to an intermediate frequency furnace smelting production line with a dust removal function.
Background
The medium frequency furnace, which is called medium frequency induction furnace, is a device for converting power frequency 50HZ alternating current into medium frequency (more than 300HZ to 1000 HZ) and is widely used for smelting nonferrous metals and ferrous metals. Compared with other casting equipment, the medium-frequency induction furnace has the advantages of high heat efficiency, short smelting time, less burning loss of alloy elements, wide smelting materials, small environmental pollution, capability of accurately controlling the temperature and components of molten metal, and the like. When the intermediate frequency furnace is used for smelting, a large amount of high-temperature dust and smoke can be generated, if the high-temperature dust and smoke are not effectively treated, the temperature of a production workshop can be rapidly increased, and the health of workers can be seriously influenced.
At present, the conventional treatment mode is to set a simple dust hood at the opening part of the intermediate frequency furnace to collect dust and flue gas, and the treatment mode has the defects of unsatisfactory collection effect and incapability of effectively isolating heat.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the intermediate frequency furnace smelting production line with the dust removal function, which has the advantages of ingenious and reasonable structure, convenient use and good dust removal effect.
The technical scheme of the invention is realized as follows: the intermediate frequency furnace smelting production line with the dust removal function comprises a smelting platform, wherein an intermediate frequency furnace is arranged at the end part of the smelting platform, a discharge chute is arranged on a foundation at the outer side of the intermediate frequency furnace, and dust removal chambers are arranged at the peripheries of the intermediate frequency furnace and the discharge chute; the smelting platform at the side of the intermediate frequency furnace is internally provided with an installation chamber, a negative pressure fan is arranged in the installation chamber, and a dust guiding structure communicated with an air inlet of the negative pressure fan is arranged in the dust removing chamber.
An annular ditch is circumferentially arranged on the foundation at the periphery of the smelting platform, and a connecting underdrain for conducting an air outlet of the negative pressure fan and the annular ditch is arranged at the bottom of the smelting platform; the high-pressure water pipe is arranged above the water surface of the annular water channel along the length direction, a plurality of atomizing spray heads are uniformly distributed on the high-pressure water pipe at intervals, and a high-pressure water pump connected with the high-pressure water pipe is arranged in the annular water channel.
In the intermediate frequency furnace smelting production line with the dust removal function, the intermediate frequency furnace is arranged at one end of the smelting platform along the length direction, first guide rails which are in one-to-one correspondence with the intermediate frequency furnace are arranged on the smelting platform along the length direction, and feeding cars are movably arranged on the first guide rails; the feeding vehicle consists of a walking base movably arranged on the first guide rail, a hopper connected with the walking base through a buffer rubber sleeve and a vibration motor arranged on the outer wall of the hopper; the walking base and the vibration motor are connected with the control unit; the other end of the first guide rail corresponds to a material storage yard, and materials are adsorbed and fed into the feeding vehicle through the electromagnetic chuck.
In the intermediate frequency furnace smelting production line with the dust removing function, the dust removing chamber consists of a dust removing frame, a heat insulation side wall arranged along the circumferential direction of the dust removing frame and a heat insulation top plate arranged at the top of the dust removing frame; a feed inlet is arranged at the lower part of the heat-insulating side wall at one side far away from the discharge chute;
The top of the heat-insulating top plate at two sides of the top abdication hole along the length direction is provided with a mounting frame welded with the dust removal frame, two first sealing films matched with each other are arranged at the top abdication hole along the length direction, and each first sealing film is fixed on the corresponding mounting frame; an operation door is arranged at the lower part of the heat insulation side wall corresponding to the top abdication hole, a side abdication hole communicated with the top abdication hole is arranged on the heat insulation side wall above the operation door along the vertical direction, and two second sealing films matched with each other are arranged at the side abdication hole along the length direction; in the initial state, the first sealing rubber sheet and the second sealing rubber sheet which are matched with each other are matched with and seal the corresponding top abdication hole and the corresponding side abdication hole, when molten iron is hoisted, the first sealing rubber sheet or the second sealing rubber sheet is extruded by a sling on the gantry crane, passes through the side abdication hole and moves along the top abdication hole.
In the intermediate frequency furnace smelting production line with the dust removal function, a second guide rail is arranged on a smelting platform above the negative pressure fan, a sliding frame is movably arranged on the second guide rail, and a spheroidizing wire feeder and a storage frame for storing spheroidized wires are arranged on the sliding frame; the outlet end of the spheroidizing wire feeder is opposite to the discharge chute.
In the intermediate frequency furnace smelting production line with the dust removal function, two intermediate frequency furnaces are provided, and the two intermediate frequency furnaces are arranged at the left side and the right side of the end part of the smelting platform at intervals; the spheroidizing wire feeder is arranged between the two intermediate frequency furnaces, and the negative pressure fan is positioned in the smelting platform below the sliding frame; the dust guiding structure comprises a vertical air guide pipeline arranged between two intermediate frequency furnaces in the vertical direction and a smoke absorbing pipe arranged at the upper end of the vertical air guide pipeline in the horizontal direction in a conducting mode, the vertical air guide pipeline is connected with an air inlet of a negative pressure fan in a conducting mode, two ends of the smoke absorbing pipe are respectively located above the sides of the two intermediate frequency furnaces, sealing plates are respectively movably arranged in absorption ports at two ends of the smoke absorbing pipe, and each sealing plate is connected with a switch operating rod.
In the intermediate frequency furnace smelting production line with the dust removing function, the sliding frame is provided with the protective cover corresponding to the external molten iron transfer barrel, and the protective cover consists of a cover body which is adaptive to the opening part of the external molten iron transfer barrel, a wire inlet hole which is communicated with the upper end of the cover body, and an exhaust gas guide pipe which is arranged on the side edge of the cover body and is connected with the dust guiding structure;
A wire guide pipe corresponding to the wire inlet hole is arranged at the wire outlet end of the spheroidizing wire feeder, and the lower end of the wire guide pipe is positioned at the upper side of the wire inlet hole; the dust guiding structure is provided with a connecting pipe matched with the waste gas guide pipe, when the spheroidizing wire feeding machine works, the waste gas guide pipe is connected and communicated with the connecting pipe, and when the spheroidizing wire feeding machine does not work, the waste gas guide pipe is separated from the connecting pipe.
In the intermediate frequency furnace smelting production line with the dust removal function, the annular ditch is a buried rectangular ditch, and the annular ditch consists of a sedimentation section communicated with the connecting buried ditch and three circulating water storage sections which are sequentially connected end to end and are communicated with two ends of the sedimentation section; the high-pressure water pipe is arranged in the sedimentation section;
The sedimentation section and each circulating water storage section are obliquely arranged, sand settling ponds are arranged at the lowest ends of the sedimentation section and each circulating water storage section, and sealing cover plates are detachably arranged on foundations corresponding to the sand settling ponds; the high-pressure water pump is suspended above the sand sedimentation tank in the sedimentation section.
In the intermediate frequency furnace smelting production line with the dust removal function, a protective water-collecting rain shed is arranged above the annular water channel, water guide grooves are arranged at the edge of the lower end of the protective water-collecting rain shed, and each water guide groove is connected with the annular water channel in a conducting manner through a plurality of water guide pipes arranged at intervals; the water outlet end of the water conduit is positioned below the water surface of the annular water channel.
In the intermediate frequency furnace smelting production line with the dust removal function, an exhaust chamber is arranged in a foundation at the side edge of the annular water channel, an exhaust hole communicated with the exhaust chamber is arranged on the side wall above the water surface of the annular water channel, an exhaust fan communicated with the exhaust hole is arranged in the exhaust chamber, the exhaust chamber is communicated and connected with an air guide pipeline, and the air guide pipeline is connected with a tail gas purification unit; the exhaust fan air outlet is opposite to the air guide pipeline.
In the intermediate frequency furnace smelting production line with the dust removal function, the tail gas purification unit consists of a sponge room body arranged on a high-level foundation, an asbestos screen layer arranged in the sponge room body, a support frame arranged in the asbestos screen layer and a water atomization mechanism arranged in the support frame; the air outlet end of the air guide pipeline is positioned on a foundation in the supporting frame, a discharge pipe is arranged in the supporting frame along the vertical direction, and the discharge end of the discharge pipe sequentially penetrates through the asbestos mesh layer and the sponge room body to extend to the upper portion of the sponge room body.
After the structure is adopted, the dust source is effectively surrounded by the large-space dust removing chamber outside the intermediate frequency furnace and the discharge chute and simultaneously achieves the purpose of effective heat insulation, and then dust waste gas is absorbed by the dust guiding structure in the dust removing chamber and is sent into the annular water channel to be settled by the negative pressure fan, so that the water mist area formed by combining the high-pressure water pipe and the atomizing nozzle is arranged in the annular water channel to ensure the dust removing and purifying effect, and hot air carrying dust is purified and the temperature is reduced.
Further, in order to save the production time of production line, make the compact structure of production line simultaneously, with minimum input, realize the energy-concerving and environment-protective emission reduction purpose of maximum, set up the carriage at intermediate frequency furnace side, set up balling wire feeder and corresponding protective cover on the carriage, play the purpose of splashproof dust collection through the protective cover, the rethread is with the protective cover with the dust guide in the dust guiding structure, make intermediate frequency furnace smelt and molten iron balling adopt same set of dust removal mechanism, compact structure not only, do not need to establish the balling room in addition simultaneously, also saved the time of production, the intermediate frequency furnace pours out the molten iron after, carry out the balling promptly in the dust removal room, not only convenient operation, the work effect is showing and is improving moreover.
Drawings
The invention is described in further detail below in connection with the embodiments in the drawings, but is not to be construed as limiting the invention in any way.
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic view of the structure of the feed carriage of the present invention;
FIG. 4 is an enlarged partial schematic view at B in FIG. 1;
FIG. 5 is an enlarged partial schematic view at C in FIG. 2;
FIG. 6 is a partially enlarged schematic illustration at D in FIG. 2;
FIG. 7 is an enlarged partial schematic view at E in FIG. 6;
FIG. 8 is an enlarged partial schematic view at F in FIG. 6;
FIG. 9 is a partially enlarged schematic illustration of FIG. 6 at G;
FIG. 10 is a schematic view of the internal structure of the present invention;
FIG. 11 is a schematic diagram of the connection structure of the exhaust chamber and the exhaust gas purifying unit of the present invention;
FIG. 12 is an enlarged partial schematic view at H in FIG. 10;
Fig. 13 is a partially enlarged schematic illustration at I in fig. 11.
In the figure: smelting platform 1, installation room 1a, negative pressure fan 1b, first guide rail 1c, second guide rail 1d, carriage 1e, intermediate frequency furnace 2, discharge chute 3, dust removal room 4, dust removal frame 4a, heat insulation side wall 4b, heat insulation top plate 4c, feed inlet 4d, top hole 4e, mounting frame 4f, first sealing film 4g, and heat insulation top plate 4g an operation door 4h, a side surface abdication hole 4i, a second sealing film 4j, a dust guiding structure 5, a vertical air guide pipeline 5a, a smoke absorbing pipe 5b, a sealing plate 5c, a switch operation rod 5d, a connecting pipe 5e, an annular water channel 6, a sedimentation section 6a, a circulating water storage section 6b, a sand sedimentation tank 6c the sealing cover plate 6d, the connecting underdrain 7, the high-pressure water pipe 8, the atomizing nozzle 8a, the high-pressure water pump 8b, the feeding vehicle 9, the walking base 9a, the buffer rubber sleeve 9b, the hopper 9c, the vibrating motor 9d, the spheroidizing wire feeder 10, the conduit 10a, the storage frame 11, the protective cover 12, the cover 12a, the wire inlet hole 12b, the waste gas conduit 12c, the protective water collecting canopy 13, the water guiding groove 13a, the water guiding pipe 13b, the air extracting chamber 14, the air guiding pipeline 14a, the air extracting machine 15, the tail gas purifying unit 16, the sponge room 16a, the asbestos screen 16b, the supporting frame 16c, the water atomizing mechanism 16d and the discharge pipe 16e.
Detailed Description
Referring to fig. 1 to 13, the intermediate frequency furnace smelting production line with the dust removal function comprises a smelting platform 1, wherein an intermediate frequency furnace 2 is arranged at the end part of the smelting platform 1, the intermediate frequency furnace 2 is arranged at one end of the smelting platform 1 along the length direction, first guide rails 1c which are in one-to-one correspondence with the intermediate frequency furnace 2 are arranged on the smelting platform 1 along the length direction, and a feeding vehicle 9 is movably arranged on the first guide rails 91 c; the feeding vehicle 9 consists of a walking base 9a movably arranged on the first guide rail 1c, a hopper 9c connected with the walking base 9a through a buffer rubber sleeve 9b and a vibration motor 9d arranged on the outer wall of the hopper 9 c; the walking base 9a and the vibration motor 9d are connected with a control unit; the other end of the first guide rail 1c corresponds to a material storage yard, and materials are sucked into the feeding vehicle 9 through the electromagnetic chuck. During feeding, the motor on the walking base is controlled by the external control unit to advance along the first guide rail, and metal materials in the hopper are slowly output into the intermediate frequency furnace along the hopper with a certain inclination angle through the vibration of the vibration motor. The inclination angle of the bottom in the hopper is preferably 3-10 degrees, so that materials can enter the intermediate frequency furnace at a proper speed, and the materials are prevented from being accumulated at the furnace mouth of the intermediate frequency furnace due to the fact that the materials enter the intermediate frequency furnace too fast.
A discharge chute 3 is arranged on a foundation outside the intermediate frequency furnace 2, and a dust removal chamber 4 is arranged at the periphery of the intermediate frequency furnace 2 and the discharge chute 3; an installation chamber 1a is arranged in a smelting platform 1 at the side edge of the intermediate frequency furnace 2, a negative pressure fan 1b is arranged in the installation chamber 1a, and a dust guiding structure 5 communicated with an air inlet of the negative pressure fan 1b is arranged in a dust removing chamber 4. In this embodiment, there are two intermediate frequency furnaces 2, and the two intermediate frequency furnaces 2 are disposed at intervals on the left and right sides of the end of the smelting platform 1; the spheroidizing wire feeder 10 is arranged between two intermediate frequency furnaces 2, and the negative pressure fan 1b is positioned in the smelting platform 1 below the sliding frame 1 e; the dust guiding structure 5 comprises a vertical air guide pipeline 5a arranged between the two intermediate frequency furnaces 2 along the vertical direction and a dust absorbing pipe 5b arranged at the upper end of the vertical air guide pipeline 5a along the horizontal direction in a conducting mode, the vertical air guide pipeline 5a is connected with an air inlet of the negative pressure fan 1b in a conducting mode, two ends of the dust absorbing pipe 5b are respectively located above the sides of the two intermediate frequency furnaces 2, sealing plates 5c are respectively movably arranged in absorbing ports at two ends of the dust absorbing pipe 5b, and each sealing plate 5c is connected with a switch operating rod 5d. As shown in fig. 9 and 11, in this embodiment, the rotating shaft welded on the sealing plate is movably connected with the smoke absorbing tube through a bearing, and the rotating shaft is located at an upper position in the middle of the sealing plate, so that the sealing plate can sag to seal the smoke absorbing tube when not being affected by external force, and can be opened only by small pulling force when being opened, and a limiting plate is arranged on the side edge of the sealing plate, so that the sealing plate seals the smoke absorbing tube in an initial state. Meanwhile, the switch operating rod consists of a linkage plate welded on the rotating shaft of the sealing plate and a control rod hinged on the linkage plate, and the linkage plate is obliquely arranged and has the same inclination direction as the sealing plate. When the sealing plate needs to be opened to absorb smoke and dust waste gas, the switch operating rod drives the rotating shaft to rotate, so that the sealing plate contacts with the limiting plate when rotating to a horizontal state and keeps static under the dead weight action of the operating rod, and the sealing plate is opened.
Meanwhile, a second guide rail 1d is arranged on the smelting platform 1 above the negative pressure fan 1b, a sliding frame 1e is movably arranged on the second guide rail 1d, and a spheroidizing wire feeder 10 and a storage frame 11 for storing spheroidized wires are arranged on the sliding frame 1 e; the wire outlet end of the spheroidizing wire feeder 10 is opposite to the discharge chute 3. The sliding frame can be driven manually or by a motor, and the moving mode is the prior art and can be used optionally according to the specific conditions.
By adopting the structure, the intermediate frequency furnace smelting and the molten iron spheroidizing adopt the same set of dust removing mechanism, and a spheroidizing chamber and a corresponding dust removing mechanism are not required to be additionally built, so that the structure is simplified, the working procedure is compact, the molten iron is not required to be hoisted to the spheroidizing chamber for spheroidizing, the time for transferring the molten iron is shortened, and the production efficiency is improved.
Meanwhile, in order to quickly and effectively absorb smoke and dust exhaust gas generated during spheroidization, a protective cover 12 corresponding to an external molten iron transfer barrel is arranged on the sliding frame 1e, and the protective cover 12 consists of a cover body 12a which is adaptive to an opening part of the external molten iron transfer barrel, a wire inlet hole 12b which is communicated with the upper end of the cover body 12a, and an exhaust gas guide pipe 12c which is arranged on the side edge of the cover body 12a and is connected with the dust guiding structure 5.
A conduit 10a corresponding to the wire inlet hole 12b is arranged at the wire outlet end of the spheroidizing wire feeder 10, and the lower end of the conduit 10a is positioned at the upper side of the wire inlet hole 12 b; the dust guiding structure 5 is provided with a connecting pipe 5e matched with the waste gas pipe 12c, when the spheroidizing wire feeder 10 works, the waste gas pipe 12c is connected and communicated with the connecting pipe 5e, and when the spheroidizing wire feeder 10 does not work, the waste gas pipe 12c is separated from the connecting pipe 5 e.
In order to achieve the purposes of convenience, rapidness, effective dust removal, easy maintenance and low use cost, an annular ditch 6 is circumferentially arranged on the foundation at the periphery of the smelting platform 1, and a connecting underdrain 7 for conducting an air outlet of the negative pressure fan 1b and the annular ditch 6 is arranged at the bottom of the smelting platform 1; the high-pressure water pipe 8 is arranged above the water surface of the annular water channel 6 along the length direction, a plurality of atomizing nozzles 8a are uniformly distributed on the high-pressure water pipe 8 at intervals, and a high-pressure water pump 8b connected with the high-pressure water pipe 8 is arranged in the annular water channel 6. Specifically, the annular ditch 6 is a buried rectangular ditch, and the annular ditch 6 is composed of a sedimentation section 6a communicated with the connecting underdrain 7 and three sections of circulating water storage sections 6b which are connected end to end in sequence and are communicated with two ends of the sedimentation section 6a; a high pressure water pipe 8 is arranged in the sedimentation section 6 a.
The sedimentation section 6a and each circulating water storage section 6b are obliquely arranged, a sand sedimentation tank 6c is arranged at the lowest end of the sedimentation section 6a and each circulating water storage section 6b, and a sealing cover plate 6d is detachably arranged on a foundation corresponding to each sand sedimentation tank 6 c; the high-pressure water pump 8b is suspended above the sand sedimentation tank 6c in the sedimentation section 6 a.
Meanwhile, in order to supplement water consumed in the annular canal with the lowest cost, a protective water-collecting rain shed 13 is arranged above the annular canal 6, a water guide groove 13a is arranged at the edge of the lower end of the protective water-collecting rain shed 13, and each water guide groove 13a is connected with the annular canal 6 in a conducting manner through a plurality of water guide pipes 13b arranged at intervals; the water outlet end of the water conduit 13b is positioned below the water surface of the annular canal 6.
The buried canal does not occupy the ground space, so that the depth and the size of the canal can be made larger, and the width of the annular canal in the embodiment is 1.2-1.8 m, and the depth is 2-4 m. With this structure, a large amount of water can be stored in the canal. In practical use, the water mist is naturally evaporated and drifted along with flowing air in the dust removal process because the consumption is extremely low, meanwhile, the rain shed can collect rainwater to supplement the water inlet channel, and the water channel basically does not need additional manual water supplement and does not drain water. Zero emission and zero replenishment are truly achieved. So that the dust removal cost is remarkably reduced and the effect is excellent. Because the ditch is deep, the dust amount which can be stored is very large, and the ditch can be cleaned for two or three years.
In this embodiment, the dust chamber 4 is composed of a dust removing frame 4a, a heat insulating side wall 4b arranged along the circumferential direction of the dust removing frame 4a, and a heat insulating top plate 4c arranged on the top of the dust removing frame 4 a; a feed inlet 4d is arranged at the lower part of the heat insulation side wall 4b at one side far away from the discharge chute 3.
The discharging chute 3 and the corresponding heat insulation top plate 4c of the intermediate frequency furnace 2 are provided with mutually communicated top abdicating holes 4e, the tops of the heat insulation top plates 4c at two sides of the top abdicating holes 4e along the length direction are provided with mounting frames 4f welded with the dust removal frames 4a, the top abdicating holes 4e are provided with two mutually matched first sealing films 4g along the length direction, and each first sealing film 4g is fixed on the corresponding mounting frame 4 f; an operation door 4h is arranged at the lower part of the heat-insulating side wall 4b corresponding to the top abdication hole 4e, a side abdication hole 4i communicated with the top abdication hole 4e is arranged on the heat-insulating side wall 4b above the operation door 4h along the vertical direction, and two second sealing films 4j matched with each other are arranged at the side abdication hole 4i along the length direction; in the initial state, the first sealing film 4g and the second sealing film 4j which are matched with each other are matched with and seal the corresponding top abdicating hole 4e and the corresponding side abdicating hole 4i, when molten iron is hoisted, a sling on the gantry crane extrudes the first sealing film 4g or the second sealing film 4j, passes through the side abdicating hole 4i and moves along the top abdicating hole 4 e.
Because the dust removal chamber is a large space structure, the top and the side wall are far away from the intermediate frequency furnace, so the temperature is not very high. Therefore, the heat insulating top plate and the heat insulating side wall in this embodiment are heat insulating plate structures formed by combining iron sheets and heat insulating cotton, and the heat insulating plate is in the prior art, and detailed structures thereof are not described herein.
Further preferably, in order to ensure the sedimentation and purification effects of the smoke and dust waste gas, an air suction chamber 14 is arranged in the foundation at the side edge of the annular water channel 6, an air suction hole communicated with the air suction chamber 14 is arranged on the side wall above the water surface of the annular water channel 6, an air suction fan 15 communicated with the air suction hole is arranged in the air suction chamber 14, the air suction chamber 14 is connected with an air guide pipeline 14a in a communicated manner, and the air guide pipeline 14a is connected with a tail gas purification unit 16; the air outlet of the exhaust fan 15 is opposite to the air guide pipeline 14 a. In this embodiment, the exhaust gas purifying unit 16 is composed of a sponge room 16a disposed on a high-level foundation, an asbestos screen layer 16b disposed in the sponge room 16a, a support frame 16c disposed in the asbestos screen layer 16b, and a water atomization mechanism 16d disposed at the top of the support frame 16 c; the air outlet end of the air guide pipeline 14a is positioned on the foundation in the supporting frame 16c, a discharge pipe 16e is arranged in the supporting frame 16c along the vertical direction, and the discharge end of the discharge pipe 16e sequentially penetrates through the asbestos mesh layer 16b and the sponge room 16a to extend above the sponge room 16 a. The water atomization mechanism is a structure of combining a high-pressure pump of a normal machine with an atomization nozzle, and the working principle and the detailed structure of the water atomization mechanism are not repeated here. The area of the sponge house body is 20-50 square, the height is 2.5-3.5 m, the sedimentation and filtering effects are obvious through actual use, unexpected effects are achieved, the sponge house body is large in area and is provided with a water atomization mechanism, normal use can be guaranteed through one-time cleaning in one year, cleaning is extremely convenient, and only the sponge house body needs to be knocked, and dust attached to the surface of the sponge house body falls through vibration.
The house structure made of the asbestos net layer and the sponge is low in cost, good in filtering effect and capable of effectively guaranteeing the quality of the finally discharged air by being assisted with the water atomization mechanism. It was tested to be fully compliant with emissions standards.
During operation, the external electromagnetic chuck adsorbs the metal raw materials to the feeding car in, and the control unit control feeding car carries the material to the intermediate frequency furnace to in sending the material into the intermediate frequency furnace through the mode of vibration unloading, open the smoke and dust absorption pipe of corresponding intermediate frequency furnace one side through the switch action bars, close the dust removal room, carry out metal smelting. After smelting is completed, pouring molten iron into a molten iron transfer barrel, lifting the molten iron transfer barrel by a crane, moving the molten iron transfer barrel to a spheroidizing position on the side edge of an intermediate frequency furnace, driving a spheroidizing wire feeder to move out by a sliding frame, and when the molten iron transfer barrel is just covered on an opening part of the molten iron transfer barrel to a limiting block on a second guide rail, simultaneously conducting an exhaust gas guide pipe with a connecting pipe, starting the spheroidizing wire feeder to spheroidize molten iron, and simultaneously introducing smoke dust into an annular water channel by a dust guiding structure to remove dust.
The above examples are provided for convenience of description of the present invention and are not to be construed as limiting the invention in any way, and any person skilled in the art will make partial changes or modifications to the invention by using the disclosed technical content without departing from the technical features of the invention.
Claims (8)
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Denomination of invention: A medium frequency furnace smelting production line with dust removal function Granted publication date: 20240709 Pledgee: Meizhou Rural Commercial Bank Co.,Ltd. Jiaying New Area Branch Pledgor: MEIZHOU WEIYOU WEAR-RESISTANT MATERIAL CO.,LTD. Registration number: Y2025980048611 |
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