CN110551896A - intermediate frequency furnace smelting production line with dust removal function - Google Patents
intermediate frequency furnace smelting production line with dust removal function Download PDFInfo
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- CN110551896A CN110551896A CN201910867671.0A CN201910867671A CN110551896A CN 110551896 A CN110551896 A CN 110551896A CN 201910867671 A CN201910867671 A CN 201910867671A CN 110551896 A CN110551896 A CN 110551896A
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- 239000000428 dust Substances 0.000 title claims abstract description 98
- 238000003723 Smelting Methods 0.000 title claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 40
- 238000009413 insulation Methods 0.000 claims description 24
- 239000000779 smoke Substances 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 17
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 10
- 239000010425 asbestos Substances 0.000 claims description 9
- 229910052895 riebeckite Inorganic materials 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 8
- 238000009692 water atomization Methods 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 102000010637 Aquaporins Human genes 0.000 description 28
- 239000007789 gas Substances 0.000 description 10
- 239000002912 waste gas Substances 0.000 description 10
- 230000036961 partial effect Effects 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 5
- 239000013589 supplement Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 108010063290 Aquaporins Proteins 0.000 description 1
- 108091006146 Channels Proteins 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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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
-
- 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
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- 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
- F27D17/004—Systems for reclaiming waste heat
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Geology (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses an intermediate frequency furnace smelting production line with a dust removal function; belongs to the technical field of metal smelting; the technical key points of the device comprise 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 outside the intermediate frequency furnace, and dust chambers are arranged on the peripheries of the intermediate frequency furnace and the discharge chute; an installation chamber is arranged in the smelting platform on the side edge of the intermediate frequency furnace, a negative pressure fan is arranged in the installation chamber, and the negative pressure fan is connected with a dust guiding structure; an annular water channel is arranged on the foundation on the periphery of the smelting platform along the circumferential direction, and a connecting underdrain for communicating an air outlet of the negative pressure fan with 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 ditch, and a plurality of atomizing nozzles are uniformly distributed on the high-pressure water pipe at intervals; the invention aims to provide 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 method 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
an intermediate frequency furnace, which is called an intermediate frequency induction furnace, is a device for converting power frequency 50HZ alternating current into intermediate frequency (more than 300HZ to 1000HZ), 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 material, less environmental pollution, capability of accurately controlling the temperature and the 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, and if the high-temperature dust and the smoke are not effectively treated, the temperature of a production workshop can be rapidly increased, and the physical health of workers can be seriously influenced.
at present, the conventional treatment mode is to arrange a simple dust hood at the opening part of the intermediate frequency furnace for collecting and treating dust and smoke, and the treatment mode has the defects of unsatisfactory collection effect and incapability of effectively isolating heat.
Disclosure of Invention
The invention aims to provide the intermediate frequency furnace smelting production line with the dust removal function, which is ingenious and reasonable in structure, convenient to use and good in dust removal effect, aiming at the defects of the prior art.
The technical scheme of the invention is realized as follows: an intermediate frequency furnace smelting production line with a 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 outside the intermediate frequency furnace, and dust removal chambers are arranged on 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 leading structure communicated with an air inlet of the negative pressure fan is arranged in the dust removal chamber.
An annular water channel is arranged on the foundation on the periphery of the smelting platform along the circumferential direction, and a connecting underdrain for communicating an air outlet of the negative pressure fan with the annular water channel is arranged at the bottom of the smelting platform; the water surface of the annular water channel is provided with high-pressure water pipes along the length direction, the high-pressure water pipes are uniformly distributed with a plurality of atomizing nozzles at intervals, and the annular water channel is internally provided with a high-pressure water pump connected with the high-pressure water pipes.
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 correspond to the intermediate frequency furnace one by one are arranged on the smelting platform along the length direction, and a feeding vehicle is 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 by the electromagnetic chuck and are conveyed into the feeding vehicle.
in the intermediate frequency furnace smelting production line with the dust removal function, the dust removal chamber consists of a dust removal frame, heat insulation side walls arranged along the circumferential direction of the dust removal frame and a heat insulation top plate arranged at the top of the dust removal frame; a feed inlet is formed in the lower part of the heat insulation side wall far away from one side of the discharge chute;
The top abdicating holes which are communicated with each other are arranged on the heat insulation top plates corresponding to the discharge chute and the intermediate frequency furnace, mounting frames welded with the dust removal frame are arranged at the tops of the heat insulation top plates on the two sides of the top abdicating holes along the length direction, two first sealing films which are matched with each other are arranged at the top abdicating holes 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 abdicating hole, a side abdicating hole communicated with the top abdicating hole is arranged on the heat insulation side wall on the operation door along the vertical direction, and two second sealing rubber sheets matched with each other are arranged at the side abdicating hole along the length direction; in the initial state, the first sealing film and the second sealing film which are matched with each other to seal the corresponding top yielding hole and the corresponding side yielding hole, when molten iron is hoisted, the first sealing film or the second sealing film is squeezed by a sling on the gantry crane, and the first sealing film or the second sealing film moves through the side yielding hole and along the top yielding 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 spheroidizing wires are arranged on the sliding frame; the wire 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, the number of the intermediate frequency furnaces is two, and the two intermediate frequency furnaces are arranged on 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 the two intermediate frequency furnaces in the vertical direction and a smoke dust absorption pipe arranged at the upper end of the vertical air guide pipeline in the horizontal direction in a conduction mode, the vertical air guide pipeline is in conduction connection with an air inlet of the negative pressure fan, two ends of the smoke dust absorption pipe are respectively located above the two intermediate frequency furnaces, sealing plates are movably arranged in absorption ports at two ends of the smoke dust absorption pipe respectively, and each sealing plate is connected with a switch operating rod.
In the above intermediate frequency furnace smelting production line with a dust removal function, the sliding frame is provided with a protective cover corresponding to the external molten iron transfer barrel, and the protective cover is composed of a cover body adapted to the opening part of the external molten iron transfer barrel, a wire inlet hole arranged at the upper end of the cover body in a conducting manner, and a waste gas guide pipe arranged at the side edge of the cover body and 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; be provided with the connecting pipe with exhaust gas conduit matched with on the dust-collecting structure, at balling wire feeder during operation, exhaust gas conduit is connected with the connecting pipe and switches on, when balling wire feeder was out of work, exhaust gas conduit and connecting pipe separation.
In the intermediate frequency furnace smelting production line with the dust removal function, the annular water channel is a buried rectangular water channel, and the annular water channel consists of a precipitation section communicated with the connection underdrain and three sections of circulating water storage sections which are sequentially connected end to end and are communicated and connected with two ends of the precipitation section; the high-pressure water pipe is arranged in the precipitation section;
The sedimentation section and each circulating water storage section are obliquely arranged, the lowest ends of the sedimentation section and each circulating water storage section are provided with a sand basin, and a sealing cover plate is detachably arranged on a foundation corresponding to each sand basin; the high-pressure water pump is hung above the sand settling tank in the settling section.
In the intermediate frequency furnace smelting production line with the dust removal function, a protective water collecting canopy is arranged above the annular water channel, water guide grooves are formed in the edge of the lower end of the protective water collecting canopy, and the water guide grooves are in conduction connection with the annular water channel 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 ditch.
In the intermediate frequency furnace smelting production line with the dust removal function, an air suction chamber is arranged in a foundation on the side edge of the annular water channel, an air suction hole communicated with the air suction chamber is arranged on the side wall above the water surface of the annular water channel, an exhaust fan communicated with the air suction hole is arranged in the air suction chamber, the air suction chamber is communicated and connected with an air guide pipeline, and the air guide pipeline is connected with a tail gas purification unit; the air outlet of the exhaust fan is opposite to the air guide pipeline.
in the above intermediate frequency furnace smelting production line with a dust removal function, the tail gas purification unit is composed of a cavernous body arranged on a high foundation, an asbestos mesh layer arranged in the cavernous body, a support frame arranged in the asbestos mesh 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 exhaust end of the discharge pipe sequentially penetrates through the asbestos net layer and the cavernous body to extend to the upper part of the cavernous body.
After the structure is adopted, firstly, a dust source is effectively surrounded and simultaneously the purpose of effective heat insulation is achieved through the large-space dust removal chamber positioned outside the intermediate frequency furnace and the discharge chute, then, dust waste gas is absorbed and sent into the annular water channel for sedimentation through the dust guide structure in the dust removal chamber and the negative pressure fan, and in order to ensure the dust removal and purification effect, the water mist area formed by combining the high-pressure water pipe and the atomizing spray head is arranged in the annular water channel, so that hot air carrying dust is purified, and the temperature is reduced.
Furthermore, in order to save the production time of the production line, the production line is compact in structure and minimum investment, the purposes of energy conservation, environmental protection and emission reduction are achieved to the maximum extent, the sliding frame is arranged on the side edge of the intermediate frequency furnace, the spheroidizing wire feeder and the corresponding protective cover are arranged on the sliding frame, the purposes of splash prevention and dust collection are achieved through the protective cover, dust is guided into the dust guiding structure through the protective cover, the intermediate frequency furnace is smelted and molten iron spheroidization adopts the same set of dedusting mechanism, the structure is compact, a spheroidizing chamber is not needed to be additionally arranged at the same time, the production time is saved, after the molten iron is poured out from the intermediate frequency furnace, spheroidization is carried out in the dedusting chamber, the operation is convenient, and the working effect is.
Drawings
The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.
FIG. 1 is a schematic plan view of the present invention;
FIG. 2 is a schematic cross-sectional view taken at A-A in FIG. 1;
FIG. 3 is a schematic structural view of the feed wagon of the present invention;
FIG. 4 is an enlarged partial schematic view at B of FIG. 1;
FIG. 5 is an enlarged partial schematic view at C of FIG. 2;
FIG. 6 is an enlarged partial schematic view at D of 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 of FIG. 6;
FIG. 9 is an enlarged partial schematic view at G of FIG. 6;
FIG. 10 is a schematic view of the internal structure of the present invention;
FIG. 11 is a schematic view showing a connection structure of the air draft chamber and the tail gas purifying unit according to the present invention;
FIG. 12 is an enlarged partial schematic view at H of FIG. 10;
Fig. 13 is a partially enlarged schematic view at I in fig. 11.
In the figure: smelting platform 1, installation chamber 1a, negative pressure fan 1b, first guide rail 1c, second guide rail 1d, sliding frame 1e, intermediate frequency furnace 2, discharge chute 3, dust removal chamber 4, dust removal frame 4a, heat insulation side wall 4b, heat insulation top plate 4c, feed inlet 4d, top abdicating hole 4e, installation rack 4f, first sealing rubber sheet 4g, operation door 4h, side abdicating hole 4i, second sealing rubber sheet 4j, dust guiding structure 5, vertical air guide pipeline 5a, smoke absorption pipe 5b, sealing plate 5c, switch operation rod 5d, connecting pipe 5e, annular water channel 6, precipitation section 6a, circulating water storage section 6b, sand precipitation tank 6c, sealing cover plate 6d, connecting concealed channel 7, high pressure water pipe 8, atomizing nozzle 8a, high pressure water pump 8b, feed vehicle 9, walking base 9a, buffering rubber sleeve 9b, hopper 9c, vibration motor 9d, The device comprises a spheroidizing wire feeder 10, a conduit 10a, a storage frame 11, a protective cover 12, a cover body 12a, a wire inlet hole 12b, a waste gas conduit 12c, a protective water-collecting canopy 13, a water chute 13a, a water conduit 13b, an air draft chamber 14, an air guide pipeline 14a, an exhaust fan 15, a tail gas purification unit 16, a sponge room body 16a, an asbestos gauze layer 16b, a supporting frame 16c, a water atomization mechanism 16d and a discharge pipe 16 e.
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 trolley 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 the control unit; the other end of the first guide rail 1c corresponds to a material storage yard, and materials are adsorbed by an electromagnetic chuck and sent into the feeding vehicle 9. During feeding, the motor on the walking base is controlled by the external control unit to move forward along the first guide rail, and metal materials in the hopper are slowly output to 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 the materials can enter the intermediate frequency furnace at a proper speed, and the materials are prevented from entering the intermediate frequency furnace too fast to cause the accumulation of the materials at the furnace mouth of the intermediate frequency furnace.
A discharge chute 3 is arranged on the foundation outside the intermediate frequency furnace 2, and a dust removal chamber 4 is arranged on the periphery of the intermediate frequency furnace 2 and the discharge chute 3; an installation chamber 1a is arranged in the smelting platform 1 on the side of the intermediate frequency furnace 2, a negative pressure fan 1b is arranged in the installation chamber 1a, and a dust leading structure 5 communicated with an air inlet of the negative pressure fan 1b is arranged in the dust removal chamber 4. In the embodiment, the number of the intermediate frequency furnaces 2 is two, and the two intermediate frequency furnaces 2 are arranged on the left side and the right side of the end part of the smelting platform 1 at intervals; the spheroidizing wire feeder 10 is arranged between the 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 in the vertical direction and a smoke dust absorption pipe 5b arranged at the upper end of the vertical air guide pipeline 5a in a conduction mode in the horizontal direction, the vertical air guide pipeline 5a is in conduction connection with an air inlet of the negative pressure fan 1b, two ends of the smoke dust absorption pipe 5b are respectively located above the two intermediate frequency furnaces 2, sealing plates 5c are movably arranged in absorption ports at two ends of the smoke dust absorption pipe 5b respectively, and each sealing plate 5c is connected with a switch operating rod 5 d. 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 pipe through a bearing, and the rotating shaft is located at the upper position of the middle part of the sealing plate, so that the smoke absorbing pipe can be drooping and sealed when not being subjected to external force, and when the smoke absorbing pipe needs to be opened, the smoke absorbing pipe can be opened only by a small pulling force, and the limiting plate is arranged on the side of the smoke absorbing pipe, so that the smoke absorbing pipe is sealed by the sealing plate 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 oblique direction as the sealing plate. When the sealing plate is required 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 is contacted with the limiting plate when rotating to a horizontal state and keeps static under the action of the dead weight of the operating rod, and the opening of the sealing plate is completed.
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 spheroidizing wires are arranged on the sliding frame 1 e; the outlet end of the spheroidizing wire feeder 10 is opposite to the discharging groove 3. The sliding frame can be driven manually or by a motor, the moving mode is the prior art, and the sliding frame can be selected and used according to specific situations.
By adopting the structure, the same set of dust removal mechanism is adopted for smelting in the intermediate frequency furnace and spheroidizing the molten iron, and a spheroidizing chamber and a corresponding dust removal mechanism are not required to be additionally built, so that the structure is simplified, the process 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 the smoke and waste gas generated during spheroidization, a protective cover 12 corresponding to the external molten iron transfer barrel is arranged on the sliding frame 1e, and the protective cover 12 consists of a cover body 12a matched with the opening part of the external molten iron transfer barrel, a wire inlet hole 12b communicated with the upper end of the cover body 12a, and a waste gas guide pipe 12c arranged on the side edge of the cover body 12a and connected with the dust guiding structure 5.
A wire guide pipe 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 wire guide pipe 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 guide pipe 12c, when the spheroidizing wire feeder 10 works, the waste gas guide pipe 12c is connected and conducted with the connecting pipe 5e, and when the spheroidizing wire feeder 10 does not work, the waste gas guide pipe 12c is separated from the connecting pipe 5 e.
In order to achieve the purposes of convenient, quick and effective dust removal, easy maintenance and low use cost, an annular water channel 6 is arranged on the foundation at the periphery of the smelting platform 1 along the circumferential direction, and a connecting underdrain 7 for communicating an air outlet of the negative pressure fan 1b with the annular water channel 6 is arranged at the bottom of the smelting platform 1; a 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 spray heads 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 water channel 6 is a buried rectangular water channel, and the annular water channel 6 is composed of a settling section 6a communicated with a connecting underdrain 7 and three sections of circulating water storage sections 6b which are sequentially connected end to end and are communicated and connected with two ends of the settling section 6 a; a high pressure water line 8 is arranged in the settling section 6 a.
The sedimentation section 6a and each circulating water storage section 6b are obliquely arranged, the lowest ends of the sedimentation section 6a and each circulating water storage section 6b are provided with sand settling ponds 6c, and the foundations corresponding to the sand settling ponds 6c are detachably provided with sealing cover plates 6 d; the high pressure water pump 8b is suspended above the sand basin 6c in the settling section 6 a.
meanwhile, in order to supplement water consumed in the annular canal at the lowest cost, a protective water collecting canopy 13 is arranged above the annular canal 6, a water chute 13a is arranged at the edge of the lower end of the protective water collecting canopy 13, and each water chute 13a is communicated and connected with the annular canal 6 through a plurality of water guide pipes 13b arranged at intervals; the outlet end of the water conduit 13b is positioned below the water surface of the annular canal 6.
The buried water channel does not occupy the ground space, so that the depth and the size of the buried water channel can be larger, and the annular water channel in the embodiment has the width of 1.2-1.8 meters and the depth of 2-4 meters. With this structure, a large amount of water can be stored in the raceway. In practical use, the fact that the consumption of the rainwater is very low is mainly that the rainwater naturally evaporates and drifts away along with flowing air in the dust removal process, meanwhile, the rain shed can collect rainwater to supplement the water into the water channel, and the water channel basically does not need additional manual water supplement and does not discharge water. Zero emission and zero supplement are really realized. So that the dust removal cost is remarkably reduced and the effect is excellent. Because the ditch is deep, the amount of dust which can be stored in the ditch is very large, and the ditch can be cleaned in two or three years.
In the present embodiment, the dust removing 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 at the top of the dust removing frame 4 a; and a feeding hole 4d is formed in the lower part of the heat insulation side wall 4b far away from one side of the discharge chute 3.
top abdicating holes 4e which are communicated with each other are formed in heat insulation top plates 4c corresponding to the discharge chute 3 and the intermediate frequency furnace 2, mounting frames 4f which are welded with the dust removal frame 4a are arranged at the tops of the heat insulation top plates 4c on two sides of the top abdicating holes 4e along the length direction, two first sealing films 4g which are matched with each other are arranged at the positions of the top abdicating holes 4e 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 abdicating hole 4e, a side abdicating hole 4i communicated with the top abdicating hole 4e is arranged on the heat-insulating side wall 4b on the operation door 4h along the vertical direction, and two second sealing rubber sheets 4j matched with each other are arranged at the side abdicating hole 4i along the length direction; in an initial state, the first sealing rubber sheet 4g and the second sealing rubber sheet 4j which are matched with each other to seal the corresponding top yielding hole 4e and the corresponding side yielding hole 4i, when molten iron is hoisted, a sling on the gantry crane extrudes the first sealing rubber sheet 4g or the second sealing rubber sheet 4j, passes through the side yielding hole 4i and moves along the top yielding hole 4 e.
Because the dust removal chamber is of a large space structure, the top and the side wall of the dust removal chamber are far away from the intermediate frequency furnace, and the temperature is not very high. Therefore, the heat insulation top plate and the heat insulation side wall in the embodiment are both heat insulation plate structures formed by combining iron sheets and heat insulation cotton, the heat insulation plate is the prior art, and detailed structures of the heat insulation plate are not described herein again.
Further preferably, in order to ensure the settling and purifying effect of the smoke and dust waste gas, an air draft chamber 14 is arranged in a foundation on the side edge of the annular water channel 6, an air draft hole communicated with the air draft chamber 14 is arranged on the side wall above the water surface of the annular water channel 6, an exhaust fan 15 communicated with the air draft hole is arranged in the air draft chamber 14, the air draft chamber 14 is communicated and connected with an air guide pipeline 14a, and the air guide pipeline 14a is connected with a tail gas purifying unit 16; the air outlet of the exhaust fan 15 is opposite to the air guide duct 14 a. In this embodiment, the exhaust gas purification unit 16 is composed of a cavernous body 16a disposed on a high foundation, an asbestos-net layer 16b disposed in the cavernous body 16a, a support frame 16c disposed in the asbestos-net 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 exhaust end of the discharge pipe 16e sequentially penetrates through the asbestos gauze layer 16b and the cavernous body 16a to extend above the cavernous body 16 a. The water atomization mechanism is a structure that a high-pressure pump of a conventional machine is combined with an atomization nozzle, and the working principle and the detailed structure of the water atomization mechanism are not repeated. The area of the cavernous body is 20-50 square, the height is 2.5-3.5 meters, through the actual use discovery, it subsides and the filter effect is showing, has unexpected effect, because the area is big and have water atomization mechanism, it need not often to clear up, can guarantee its normal use once a year, and the clearance is also extremely convenient, only need to strike the cavernous body, make its surface adnexed dust drop through the vibration.
The house body structure made of the asbestos net layer and the sponge has low manufacturing cost and good filtering effect, and is assisted with the water atomization mechanism, so that the quality of finally discharged air is effectively ensured. The detection shows that the product completely meets the emission standard.
During operation, outside electromagnet adsorbs 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 tube of the intermediate frequency furnace one side that corresponds through the switch lever, close the clean room, carry out metal melting. After the smelting is accomplished, pour the molten iron into the molten iron and change the bucket, lift by crane the molten iron through the driving and change the spheroidization position that the bucket removed to the intermediate frequency furnace side, the carriage drives spheroidization wire feeder and shifts out, and when the stopper on the second guide rail, the protective cover just covers in the molten iron transfer bucket opening, and exhaust gas pipe switches on with the connecting pipe simultaneously, starts spheroidization wire feeder and can carry out the molten iron balling, and the dust structure is introduced the annular ditch with the smoke and dust simultaneously and is removed dust.
The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. An intermediate frequency furnace smelting production line with a 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), and is characterized in that a discharge chute (3) is arranged on a foundation at the outer side of the intermediate frequency furnace (2), and dust removal chambers (4) are arranged on the peripheries of the intermediate frequency furnace (2) and the discharge chute (3); an installation chamber (1a) is arranged in the smelting platform (1) on the side of the intermediate frequency furnace (2), a negative pressure fan (1b) is arranged in the installation chamber (1a), and a dust-leading structure (5) communicated with an air inlet of the negative pressure fan (1b) is arranged in the dust-removing chamber (4);
an annular water channel (6) is arranged on a foundation on the periphery of the smelting platform (1) along the circumferential direction, and a connecting underdrain (7) for communicating an air outlet of the negative pressure fan (1b) with the annular water channel (6) is arranged at the bottom of the smelting platform (1); the water surface of the annular ditch (6) is provided with a high-pressure water pipe (8) along the length direction, the high-pressure water pipe (8) is evenly distributed with a plurality of atomizing nozzles (8a) at intervals, and the annular ditch (6) is internally provided with a high-pressure water pump (8b) connected with the high-pressure water pipe (8).
2. The intermediate frequency furnace smelting production line with the dust removal function according to claim 1, characterized in that the intermediate frequency furnace (2) is arranged at one end of the smelting platform (1) along the length direction, first guide rails (1c) which correspond to the intermediate frequency furnace (2) one by one are arranged on the smelting platform (1) along the length direction, and a feeding trolley (9) is movably arranged on the first guide rails (1 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 the control unit; the other end of the first guide rail (1c) corresponds to a material storage yard, and materials are sucked by an electromagnetic chuck and sent into the feeding vehicle (9).
3. the intermediate frequency furnace smelting production line with the dust removing function according to claim 1, wherein the dust removing chamber (4) is composed of a dust removing frame (4a), heat-insulating side walls (4b) arranged along the circumferential direction of the dust removing frame (4a) and a heat-insulating top plate (4c) arranged at the top of the dust removing frame (4 a); a feed inlet (4d) is formed in the lower part of the heat insulation side wall (4b) far away from one side of the discharge chute (3);
Top abdicating holes (4e) which are communicated with each other are formed in heat insulation top plates (4c) corresponding to the discharge chute (3) and the intermediate frequency furnace (2), mounting frames (4f) welded with the dust removal frame (4a) are arranged at the tops of the heat insulation top plates (4c) on two sides of the top abdicating holes (4e) along the length direction, two first sealing rubber sheets (4g) which are matched with each other are arranged at the positions of the top abdicating holes (4e) along the length direction, and each first sealing rubber sheet (4g) is fixed on the corresponding mounting frame (4 f); an operation door (4h) is arranged at the lower part of the heat insulation side wall (4b) corresponding to the top abdicating hole (4e), a side abdicating hole (4i) communicated with the top abdicating hole (4e) is arranged on the heat insulation side wall (4b) on the operation door (4h) along the vertical direction, and two second sealing rubber sheets (4j) matched with each other are arranged at the side abdicating hole (4i) along the length direction; in an initial state, the first sealing rubber sheet (4g) and the second sealing rubber sheet (4j) which are matched with each other to seal the corresponding top yielding hole (4e) and the corresponding side yielding hole (4i), when molten iron is hoisted, the sling on the gantry crane extrudes the first sealing rubber sheet (4g) or the second sealing rubber sheet (4j), passes through the side yielding hole (4i) and moves along the top yielding hole (4 e).
4. The intermediate frequency furnace smelting production line with the dust removal function according to claim 1, characterized in that 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 spheroidizing wires are arranged on the sliding frame (1 e); the outlet end of the spheroidizing wire feeder (10) is opposite to the discharge chute (3).
5. The intermediate frequency furnace smelting production line with the dust removing function according to claim 4, is characterized in that the number of the intermediate frequency furnaces (2) is two, and the two intermediate frequency furnaces (2) are arranged on the left side and the right side of the end part of the smelting platform (1) at intervals; the spheroidizing wire feeder (10) is arranged between the 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) in the vertical direction and a smoke absorption pipe (5b) arranged at the upper end of the vertical air guide pipeline (5a) in the horizontal direction in a conduction mode, the vertical air guide pipeline (5a) is in conduction connection with an air inlet of the negative pressure fan (1b), two ends of the smoke absorption pipe (5b) are respectively located above the two intermediate frequency furnaces (2), sealing plates (5c) are movably arranged in absorption ports at two ends of the smoke absorption pipe (5b) respectively, and each sealing plate (5c) is connected with a switch operating rod (5 d).
6. The medium frequency furnace smelting production line with the dust removing function according to claim 4, wherein the sliding frame (1e) is provided with a protective cover (12) corresponding to the external molten iron transfer barrel, the protective cover (12) is composed of a cover body (12a) corresponding to the opening of the external molten iron transfer barrel, a wire inlet hole (12b) communicated with the upper end of the cover body (12a), and an exhaust gas conduit (12c) arranged at the side of the cover body (12a) and connected with the dust guiding structure (5);
A wire guide pipe (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 wire guide pipe (10a) is positioned at the upper side of the wire inlet hole (12 b); be provided with connecting pipe (5e) with exhaust gas conduit (12c) matched with on draw dirt structure (5), when balling wire feeder (10) worked, exhaust gas conduit (12c) and connecting pipe (5e) are connected and are switched on, and when balling wire feeder (10) was out of work, exhaust gas conduit (12c) and connecting pipe (5e) separation.
7. The intermediate frequency furnace smelting production line with the dust removal function according to claim 1, wherein the annular water channel (6) is a buried rectangular water channel, and the annular water channel (6) is composed of a settling section (6a) communicated with the connecting underground channel (7) and three sections of circulating water storage sections (6b) which are sequentially connected end to end and are communicated and connected with two ends of the settling section (6 a); the 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, the lowest ends of the sedimentation section (6a) and each circulating water storage section (6b) are provided with sand settling ponds (6c), and sealing cover plates (6d) are detachably arranged on foundations corresponding to the sand settling ponds (6 c); the high-pressure water pump (8b) is suspended above a sand basin (6c) in the settling section (6 a).
8. The intermediate frequency furnace smelting production line with the dust removal function according to claim 1, characterized in that a protective water collecting canopy (13) is arranged above the annular canal (6), the lower end edge of the protective water collecting canopy (13) is provided with water chutes (13a), and each water chute (13a) is in conduction connection with the annular canal (6) 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 water channel (6).
9. The intermediate frequency furnace smelting production line with the dust removal function according to claim 1 or 7, characterized in that an air draft chamber (14) is arranged in a foundation at the side edge of the annular water channel (6), an air draft hole communicated with the air draft chamber (14) is arranged on the side wall above the water surface of the annular water channel (6), an air draft fan (15) communicated with the air draft hole is arranged in the air draft chamber (14), the air draft chamber (14) is communicated and connected with an air guide pipeline (14a), 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).
10. The intermediate frequency furnace smelting production line with the dust removal function according to claim 9, wherein the tail gas purification unit (16) is composed of a sponge room body (16a) arranged on a high foundation, an asbestos gauze layer (16b) arranged in the sponge room body (16a), a supporting frame (16c) arranged in the asbestos gauze layer (16b), and a water atomization mechanism (16d) arranged in the supporting 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 exhaust end of the discharge pipe (16e) sequentially penetrates through the asbestos net layer (16b) and the sponge room body (16a) to extend above the sponge room body (16 a).
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| CN201910867671.0A CN110551896A (en) | 2019-09-14 | 2019-09-14 | intermediate frequency furnace smelting production line with dust removal function |
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| CN201910867671.0A CN110551896A (en) | 2019-09-14 | 2019-09-14 | intermediate frequency furnace smelting production line with dust removal function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115627321A (en) * | 2022-08-31 | 2023-01-20 | 芜湖泓鹄材料技术有限公司 | Wire feeding chamber suitable for multi-size ladle |
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| CN1056567A (en) * | 1990-05-17 | 1991-11-27 | 福吉斯技术公司 | Have two smelting furnace smelting equipments arranged side by side |
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| CN115627321A (en) * | 2022-08-31 | 2023-01-20 | 芜湖泓鹄材料技术有限公司 | Wire feeding chamber suitable for multi-size ladle |
| CN115627321B (en) * | 2022-08-31 | 2024-04-09 | 芜湖泓鹄材料技术有限公司 | Wire feeding chamber suitable for multi-size ladle |
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