Boron-containing high-chromium cast iron and intermediate frequency furnace for processing

Abstract

The invention discloses boron-containing high-chromium cast iron and an intermediate frequency furnace for machining, and relates to the technical field of intermediate frequency furnaces. A plurality of air supply holes are evenly formed in the other side of an arc-shaped air box, the air outlet end of an exhaust fan is connected to one ends of two air supply pipes, the other ends of the two air supply pipes are connected with one sides of the two arc-shaped air boxes correspondingly, and a lifting cylinder is installed on the other side of a protective cylinder; the output end of the lifting cylinder is connected with a supporting suspension frame, the top end of the supporting suspension frame is connected with a material storage barrel, and a plurality of air inlet holes are evenly formed in the two sides of the material storage barrel. Filtered waste smoke flows through the air supply pipe, enters the arc-shaped air box and then enters the material storage barrel, and the filtered high-temperature waste smoke dries metal furnace burden in the material storage barrel; heat contained in waste smoke is effectively utilized, furnace charge is added into the storage barrel in advance, the dried furnace charge in the storage barrel can be quickly fed into the smelting furnace during next feeding, the intermediate waiting time is short, and the production efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of medium frequency furnaces, in particular to a boron-containing high-chromium cast iron and a medium frequency furnace for processing the same. Background Art

[0002] High chromium cast iron is the abbreviation of high chromium white cast iron, which is a kind of wear-resistant material with excellent performance and is particularly valued. Medium frequency furnace is often used for smelting high chromium cast iron. The working frequency of medium frequency induction furnace is between 50 and 2000Hz. It is widely used for smelting non-ferrous metals and ferrous metals. Compared with other casting equipment, medium frequency induction furnace has the advantages of high thermal efficiency, short smelting time, less alloy element burnout, wide smelting material, less environmental pollution, and accurate control of molten metal temperature and composition.

[0003] In the Chinese patent with application number 202221266991.4 and name "Dust Removal Equipment for Medium Frequency Furnace", the patent collects the waste smoke discharged from the medium frequency furnace through a convergence plate, and cools and filters the discharged waste smoke through a guide pipe, a rotating pipe and a connecting pipe loosening and filtering mechanism. The patent directly cools the waste smoke through cooling water, and the waste smoke generated by metal smelting contains a large amount of heat. The patent cannot effectively utilize the heat contained in the waste smoke, causing the heat contained in the waste smoke to be wasted. The medium frequency has strict regulations on the moisture content of the charge. During smelting, the charge needs to be dried separately first, and then the dried charge is sent into the furnace. The transfer in the middle is long and the production efficiency is low. Summary of the invention

[0004] The present invention provides a boron-containing high-chromium cast iron and a medium-frequency furnace for processing it, which can effectively solve the problem that the patent in the above-mentioned background technology cannot effectively utilize the heat contained in the waste smoke, so that the heat contained in the waste smoke is wasted, and the medium frequency has strict regulations on the moisture content of the charge. During smelting, the charge needs to be dried separately first and then the dried charge is sent into the furnace, the transfer in the middle is long, and the production efficiency is low.

[0005] To achieve the above object, the present invention provides the following technical solution: a medium frequency furnace for processing boron-containing high-chromium cast iron, comprising a support frame, a fume utilization component is arranged between two of the support frames, and the fume utilization component comprises a protective tube; A protective cylinder is rotatably installed between the two support frames, a smelting furnace is installed inside the protective cylinder, a U-shaped frame is installed on one side of the protective cylinder, a lifting cylinder is installed on one end of the U-shaped frame, the output end of the lifting cylinder is connected to one side of the top of the heat insulation cover, the heat insulation cover is located at the top of the protective cylinder, a connecting port is opened in the middle of the heat insulation cover, a sealing cover is rotatably installed on the top of the connecting port, a telescopic outer tube is connected to the other end of the U-shaped frame, a telescopic inner tube is slidably connected to the bottom of the inner side of the telescopic outer tube, an exhaust hole is opened at the top of the heat insulation cover at the bottom of the telescopic inner tube, the bottom of the telescopic inner tube is connected to the exhaust hole, and one side of the telescopic outer tube is connected to the air inlet end of the exhaust fan through a filter box; The top of the heat insulation cover is located on one side of the sealing cover and a limiting sliding rod is installed, and the top of the heat insulation cover is located on the other side of the sealing cover and a bidirectional screw is rotatably installed, two moving frames are respectively connected between the two ends of the limiting sliding rod and the two ends of the bidirectional screw, one side of the moving frame is connected to one side of the arc-shaped air box, and a number of air supply holes are evenly opened on the other side of the arc-shaped air box, the air outlet end of the exhaust fan is connected to one end of two air supply pipes, and the other ends of the two air supply pipes are respectively connected to one side of the two arc-shaped air boxes, a lifting cylinder is installed on the other side of the protective cylinder, the output end of the lifting cylinder is connected to a supporting suspension, the top of the supporting suspension is connected to a storage barrel, and a number of air inlet holes are evenly opened on both sides of the storage barrel.

[0006] According to the above technical solution, a rotating shaft is rotatably installed on the top of the heat insulation cover near the connecting port, one side of the rotating shaft is connected to one side of the sealing cover, the top of the rotating shaft is connected to a driven gear, a driving cylinder is installed on the top of the heat insulation cover near the driven gear, the output end of the driving cylinder is connected to a driving rack, and the driven gear is meshed with the driving rack.

[0007] According to the above technical solution, a driving motor is installed on the top of the heat insulation cover near one end of the bidirectional screw, the output end of the driving motor is connected to one end of the bidirectional screw, the movable frame is slidably connected to the limiting slide rod, and the movable frame and the bidirectional screw are connected through a threaded hole.

[0008] According to the above technical solution, the cross-section of the limiting sliding rod is rectangular, and the outer side of the limiting sliding rod is a smooth surface.

[0009] According to the above technical solution, a bidirectional motor is installed on the top of one side of the storage barrel, and a winding roller is connected to the output end of the bidirectional motor. A blanking plate is hinged at the bottom of the storage barrel, and connecting ears are provided on both sides of the blanking plate. A guide wheel is rotatably installed in the middle of both sides of the storage barrel and located on the top of the connecting ear. A steel wire rope is connected between the winding roller and the adjacent connecting ear, and the steel wire rope is in contact with one side of the adjacent guide wheel. An air suction fan is installed on the top of the support suspension, and an air suction hood is connected to the air inlet end of the air suction fan.

[0010] According to the above technical solution, the number of the air supply holes is the same as that of the air inlet holes, and the diameter of the air supply holes is equal to that of the air inlet holes.

[0011] According to the above technical solution, a heat recovery component is provided outside the smelting furnace, and the heat recovery component includes an induction coil; An induction coil is installed outside the smelting furnace and inside the protective cylinder, and connectors are connected to both ends of the induction coil. An annular evaporation box is installed outside the induction coil and inside the protective cylinder, and an annular tube is installed inside the annular evaporation box. A plurality of side spray holes are evenly spaced on both sides of the annular tube. One side of the top of the annular tube is connected to one end of the evaporation tube, and the other end of the evaporation tube passes through the top of the annular evaporation box and one side of the protective cylinder in sequence. The top of the annular evaporation box is connected to one end of a plurality of steam pipes, and the other end of the steam pipes passes through one side of the protective cylinder. A cold water tank is installed on one side of the protective cylinder, a cooling water tank is installed inside the cold water tank, a cooling water pump is installed on one side outside the cold water tank, a water inlet end of the cooling water pump passes through one side of the cold water tank and is connected to the bottom of one side of the cooling water tank, a water outlet end of the cooling water pump is connected to a connector located at the bottom through a water delivery pipe, an assembly frame is installed on the top of the cooling water tank, a water supply pump is installed on one side of the cooling water pump, the water outlet end of the water supply pump is connected to a water supply pipe, a condensation box is installed on one side of the assembly frame, a plurality of cooling water boxes are installed at intervals inside the condensation box, a water inlet main pipe is connected to the bottom of the cooling water box, one end of the water supply pipe is connected to the bottom of the water inlet main pipe, a drainage main pipe is connected to the top of the drainage main pipe, the drainage pipe is connected to the evaporation pipe through an evaporation connecting pipe, a summing box is installed at the bottom of the assembly frame, one side of the summing box is connected to the steam pipe through a steam connecting pipe, and the bottom of the summing box is connected to the top of the air supply pipe.

[0012] According to the above technical solution, a water separation box is fixed on the top of the bottom surface of the assembly frame, water separation holes are evenly opened on the bottom of the water separation box, and the top of the water separation box is connected to another connector located on the top through a return pipe.

[0013] According to the above technical solution, an air supply pipe is connected through one side of the condensation box, an air supply fan is installed at one end of the air supply pipe, and the air outlet end of the air supply fan is connected to one end of the air supply pipe; The exhaust fan, drive motor, bidirectional motor, suction fan, cooling water pump, water pump and air supply fan input terminals are electrically connected to the output terminal of the external controller, and the external controller input terminal is electrically connected to the output terminal of the external power supply. According to the above technical solution, a boron-containing high-chromium cast iron is manufactured by a medium-frequency furnace for processing the boron-containing high-chromium cast iron.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. A flue gas utilization component is provided. During the process of smelting the metal inside the smelting furnace, the medium frequency furnace puts the metal to be smelted next time into the storage barrel, and drives the storage barrel to move by controlling the lifting cylinder, so that the air supply hole on the arc-shaped gas box is aligned with the air inlet hole. At the same time, the driving motor drives the two arc-shaped gas boxes to approach each other, so that the two arc-shaped gas boxes fit the outside of the storage barrel, and the air supply hole and the air inlet hole are docked. Under the guidance of the exhaust fan, the filter box filters the waste smoke, and the filtered waste smoke flows through the air supply pipe into the inside of the arc-shaped gas box, and then flows through the air supply hole and the air inlet hole into the storage barrel. The filtered high-temperature waste smoke dries the metal charge inside the storage barrel, so that the heat contained in the waste smoke is effectively utilized, and there is no need to dry the charge separately. The arc-shaped gas box and the storage barrel are both made of metal iron with good thermal conductivity. The waste smoke heats the arc-shaped gas box and the storage barrel at the same time, so the drying effect is better. When the smelting of the charge inside the smelting furnace is finished and dumped, the storage barrel is driven down by the lifting cylinder, and the storage barrel passes through the connecting port into the smelting furnace. The winding roller is driven to rotate by the bidirectional motor, the wire rope is lengthened, the unloading plate is opened, and the storage barrel is driven up by the lifting cylinder. The charge inside the storage barrel is sent into the smelting furnace, and the storage barrel is driven to move into the smelting furnace by the lifting cylinder, so that the bottom of the storage barrel is close to the bottom of the inner side of the smelting furnace. When the charge descends, the charge is close to the bottom of the inner side of the smelting furnace, which reduces the impact of the charge on the bottom of the smelting furnace, protects the smelting furnace, and prolongs the service life of the smelting furnace. During subsequent processing, the charge is added into the storage barrel in advance. When feeding into the smelting furnace next time, the dried charge in the storage barrel can be quickly fed into the smelting furnace, with short waiting time, high production continuity and higher production efficiency.

[0015] 2. A heat recovery component is provided. During the smelting process, the water delivered by the water pump enters the cooling water box through the water delivery pipe and the water inlet main pipe, and then flows through the cooling water box, the drainage main pipe, the drainage pipe, the evaporation connecting pipe and the evaporation pipe into the annular pipe, and finally sprayed out from the side spray hole. The sprayed water acts on the inside of the annular evaporation box. The heat emitted by the charge heats the annular evaporation box. The sprayed water absorbs heat and evaporates to form water vapor. The annular evaporation box evaporates water to absorb heat, which can isolate the heat emitted by the charge and make the working environment more comfortable. The water vapor flows through the steam pipe and the steam connecting pipe into the collecting box. With the help of the air supply fan, the steam in the collecting box and the steam connecting pipe quickly enters the condensation box under the action of the pressure difference. The hot water vapor contacts the outer surface of the cold cooling water box. The clean water vapor condenses into water droplets when it is cold. The condensed water droplets drip into the cold water tank. When the cooling water pump subsequently transports the condensed water in the cold water tank to the induction coil, the water produced by the condensation of the water vapor has no scale, which prevents the scale from accumulating inside the induction coil. While cooling the induction coil, the heat dissipated is effectively utilized. There is no need to manually disassemble the induction coil for cleaning, which reduces the labor cost, prolongs the continuous use time of the induction coil, and improves the production efficiency. After the induction coil is cooled, the water that transports the induction coil flows through the return pipe and the water distribution box, and finally flows into the cold water tank. When a lot of water accumulates in the cold water tank, the water in the cold water tank is transported to the water source at the water inlet end of the water pump, thereby realizing water recycling and being more environmentally friendly.

[0016] In summary, the flue gas utilization component effectively utilizes the heat of the flue gas generated by smelting to dry the charge to be processed, and the heat recovery component effectively utilizes the heat emitted by smelting, which extends the continuous use time of the induction coil and improves production efficiency. The two components cooperate with each other to make the overall equipment more energy-efficient and more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture: Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a schematic diagram of a smoke utilization assembly of the present invention; Figure 3 It is a schematic diagram of the installation structure of the heat insulation cover of the present invention; Figure 4 It is a schematic diagram of the installation structure of the arc-shaped air box of the present invention; Figure 5 It is a schematic diagram of the installation structure of the bidirectional motor of the present invention; Figure 6 is a schematic structural diagram of a heat recovery assembly of the present invention; Figure 7 It is a schematic diagram of the installation structure of the annular evaporation box of the present invention; Figure 8 The present invention comes from Figure 7 A magnified image of area A; Fig. 9It is a schematic diagram of the installation structure of the aggregation box of the present invention; Fig.10 It is a schematic diagram of the installation structure of the cooling water box of the present invention; Numbers in the figure: 1, support frame; 2. Flue gas utilization assembly; 201. Protective tube; 202. Melting furnace; 203. U-shaped frame; 204. Lifting cylinder; 205. Heat shield; 206. Connecting port; 207. Sealing cover; 208. Rotating shaft; 209. Driven gear; 210. Driving cylinder; 211. Driving rack; 212. Telescopic outer tube; 213. Telescopic inner tube; 214. Exhaust hole; 215. Filter box; 216. Exhaust fan; 217. Limiting slide bar; 218, bidirectional screw; 219, mobile frame; 220, driving motor; 221, arc-shaped air box; 222, air supply hole; 223, air supply pipe; 224, lifting cylinder; 225, supporting suspension; 226, storage barrel; 227, bidirectional motor; 228, winding roller; 229, guide wheel; 230, unloading plate; 231, connecting ear; 232, wire rope; 233, air inlet hole; 234, suction fan; 235, suction hood; 3. Heat recovery component; 301. Induction coil; 302. Connector; 303. Annular evaporation box; 304. Annular pipe; 305. Evaporation pipe; 306. Side spray hole; 307. Steam pipe; 308. Cold water tank; 309. Cooling water tank; 310. Cooling water pump; 311. Water pipe; 312. Assembly frame; 313. Water distribution box; 314. Water distribution hole; 315. Return pipe; 316. Water supply pump; 317. Water supply pipe; 318. Condensation box; 319. Cooling water box; 320. Water inlet main pipe; 321. Drainage main pipe; 322. Drainage pipe; 323. Evaporation connecting pipe; 324. Collection box; 325. Steam connecting pipe; 326. Air supply pipe; 327. Air supply fan. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Example: Figure 1-10As shown, the present invention provides a technical solution for a medium frequency furnace for processing boron-containing high-chromium cast iron, including a support frame 1, a fume utilization component 2 is arranged between two support frames 1, and the fume utilization component 2 includes a protective cylinder 201, a smelting furnace 202, a U-shaped frame 203, a lifting cylinder 204, a heat insulation cover 205, a connecting port 206, a sealing cover 207, a rotating shaft 208, a driven gear 209, a driving cylinder 210, a driving rack 211, a telescopic outer tube 212, a telescopic inner tube 213, and a discharge Air hole 214, filter box 215, exhaust fan 216, limit slide bar 217, bidirectional screw 218, movable frame 219, drive motor 220, arc-shaped air box 221, air supply hole 222, air supply pipe 223, lifting cylinder 224, supporting suspension 225, storage barrel 226, bidirectional motor 227, winding roller 228, guide wheel 229, unloading plate 230, connecting ear 231, wire rope 232, air inlet hole 233, suction fan 234 and suction hood 235.

[0021] A protective cylinder 201 is rotatably installed between the two support frames 1, a smelting furnace 202 is installed inside the protective cylinder 201, a U-shaped frame 203 is installed on one side of the protective cylinder 201, a lifting cylinder 204 is installed on one end of the U-shaped frame 203, the output end of the lifting cylinder 204 is connected to one side of the top of the heat insulation cover 205, the heat insulation cover 205 is located at the top of the protective cylinder 201, a connecting port 206 is opened in the middle of the heat insulation cover 205, a sealing cover 207 is rotatably installed on the top of the connecting port 206, a rotating shaft 208 is rotatably installed on the top of the heat insulation cover 205 near the connecting port 206, one side of the rotating shaft 208 is connected to one side of the sealing cover 207, a driven gear 209 is connected to the top of the rotating shaft 208, a driving cylinder 210 is installed on the top of the heat insulation cover 205 near the driven gear 209, the output end of the driving cylinder 210 is connected to a driving rack 211, and the driven gear 20 9 is meshed with the driving rack 211. When the driving cylinder 210 drives the driving rack 211 to move, it can drive the driven gear 209 and the rotating shaft 208 to rotate, thereby driving the sealing cover 207 to rotate. The other end of the U-shaped frame 203 is connected with a telescopic outer tube 212, and the inner bottom of the telescopic outer tube 212 is slidably connected with a telescopic inner tube 213. The top of the heat insulation cover 205 is located at the bottom of the telescopic inner tube 213 and is provided with an exhaust hole 214. The bottom of the telescopic inner tube 213 is connected to the exhaust hole 214. One side of the telescopic outer tube 212 is connected to the air inlet end of the exhaust fan 216 through the filter box 215. The exhaust fan 216 is a high-temperature resistant fan and can work normally under high temperature environment. The inside of the filter box 215 is ceramic fiber filter material. The ceramic fiber filter material is a high-temperature flue gas filter material made of ceramic fiber as the main raw material, and has good high-temperature resistance and chemical stability.

[0022] A limiting slide bar 217 is installed on the top of the heat insulation cover 205 on one side of the sealing cover 207, and a bidirectional screw 218 is rotatably installed on the top of the heat insulation cover 205 on the other side of the sealing cover 207. Two moving frames 219 are respectively connected between the two ends of the limiting slide bar 217 and the two ends of the bidirectional screw 218. A driving motor 220 is installed on the top of the heat insulation cover 205 near one end of the bidirectional screw 218. The output end of the driving motor 220 is connected to one end of the bidirectional screw 218. The moving frame 219 is slidably connected to the limiting slide bar 217. The moving frame 219 and the bidirectional screw 218 are connected through threaded holes. The cross-section of the limiting slide bar 217 is rectangular. When the driving motor 220 drives the bidirectional screw 218 to rotate, the two moving frames 219 can be driven to move closer to or away from each other under the limiting guiding action of the limiting slide bar 217. The outer side of the limiting slide bar 217 is a smooth surface, so that the limiting The friction resistance between the sliding rod 217 and the moving frame 219 is reduced, and one side of the moving frame 219 is connected to one side of the arc-shaped air box 221, and a plurality of air supply holes 222 are evenly opened on the other side of the arc-shaped air box 221. The air outlet end of the exhaust fan 216 is connected to one end of the two air supply pipes 223, and the other ends of the two air supply pipes 223 are respectively connected to one side of the two arc-shaped air boxes 221. A lifting cylinder 224 is installed on the other side of the protective cylinder 201, and the output end of the lifting cylinder 224 is connected to a supporting suspension 225, and the top of the supporting suspension 225 is connected to a storage barrel 226. A plurality of air inlet holes 233 are evenly opened on both sides of the storage barrel 226, and the number of the air supply holes 222 and the air inlet holes 233 are the same, and the diameter of the air supply holes 222 is equal to the diameter of the air inlet holes 233. When hot air enters the interior of the arc-shaped air box 221, the hot air can flow through the air supply holes 222 and the air inlet holes 233 into the interior of the storage barrel 226.

[0023] A bidirectional motor 227 is installed on the top of one side of the storage barrel 226, and a winding roller 228 is connected to the output end of the bidirectional motor 227. A discharge plate 230 is hinged at the bottom of the storage barrel 226, and connecting ears 231 are opened on both sides of the discharge plate 230. Guide wheels 229 are rotatably installed in the middle of both sides of the storage barrel 226 and located on the top of the connecting ears 231. A wire rope 232 is connected between the winding roller 228 and the adjacent connecting ear 231, and the wire rope 232 is in contact with one side of the adjacent guide wheel 229.

[0024] An air suction fan 234 is installed on the top of the supporting suspension 225. The air inlet end of the air suction fan 234 is connected to the air suction hood 235. The air outlet end of the air suction fan 234 is connected to the external environment. The hot air emitted from the storage barrel 226 can flow through the air suction hood 235 and the air suction fan 234 to be discharged, thereby preventing the hot air emitted from the storage barrel 226 from being directly discharged into the working environment. The air suction fan 234 is a high-temperature resistant fan and can work normally in a high-temperature environment.

[0025] A heat recovery assembly 3 is arranged on the outside of the smelting furnace 202, and the heat recovery assembly 3 includes an induction coil 301, a connector 302, an annular evaporation box 303, an annular pipe 304, an evaporation pipe 305, a side spray hole 306, a steam pipe 307, a cold water tank 308, a cooling water tank 309, a cooling water pump 310, a water delivery pipe 311, an assembly frame 312, a water distribution box 313, a water distribution hole 314, a return pipe 315, a water supply pump 316, a water supply pipe 317, a condensation box 318, a cooling water box 319, a water inlet main pipe 320, a drainage main pipe 321, a drainage pipe 322, an evaporation connecting pipe 323, a collecting box 324, a steam connecting pipe 325, an air supply pipe 326 and an air supply fan 327.

[0026] An induction coil 301 is installed outside the smelting furnace 202 and inside the protective cylinder 201, and connectors 302 are connected to both ends of the induction coil 301. An annular evaporation box 303 is installed outside the induction coil 301 and inside the protective cylinder 201. An annular tube 304 is installed inside the annular evaporation box 303. A number of side spray holes 306 are evenly spaced on both sides of the annular tube 304. One side of the top of the annular tube 304 is connected to one end of the evaporation tube 305, and the other end of the evaporation tube 305 passes through the top of the annular evaporation box 303 and one side of the protective cylinder 201 in sequence. The top of the annular evaporation box 303 is connected to one end of a number of steam pipes 307, and the other end of the steam pipes 307 passes through one side of the protective cylinder 201.

[0027] A cold water tank 308 is installed on one side of the protective tube 201, a cooling water tank 309 is installed inside the cold water tank 308, a cooling water pump 310 is installed on one side of the cold water tank 308, the water inlet end of the cooling water pump 310 passes through one side of the cold water tank 308 and is connected to the bottom of one side of the cooling water tank 309, the water outlet end of the cooling water pump 310 is connected to a connector 302 located at the bottom through a water pipe 311, an assembly frame 312 is installed on the top of the cooling water tank 309, a water separation box 313 is fixed on the top of the bottom surface of the assembly frame 312, and the bottom of the water separation box 313 is evenly provided with separation holes. The water hole 314, the top of the water distribution box 313 is connected to another connector 302 at the top through the return pipe 315. After the cooling water cools the induction coil, it flows through the return pipe 315 into the water distribution box 313. The water distribution hole 314 can disperse the refluxed cooling water, increase the contact area between the refluxed cooling water and the air, and quickly cool down the refluxed cooling water during its fall. A water supply pump 316 is installed on one side of the cooling water pump 310, and a water supply pipe 317 is connected to the water outlet of the water supply pump 316. A condensation box 318 is installed on one side of the assembly frame 312. A plurality of cooling water boxes 319 are installed at intervals inside the box 318. The bottom of the cooling water box 319 is connected to a water inlet main pipe 320. One end of the water supply pipe 317 is connected to the bottom of the water inlet main pipe 320. The top of the cooling water box 319 is connected to a drainage main pipe 321. The top of the drainage main pipe 321 is connected to a drainage pipe 322. The drainage pipe 322 is connected to the evaporation pipe 305 through an evaporation connecting pipe 323. A collection box 324 is installed at the bottom of the assembly frame 312. One side of the collection box 324 is connected to the steam pipe 307 through a steam connecting pipe 325. The collection box The bottom of 324 is connected to the top of the air supply pipe 326, and the air supply pipe 326 is connected to one side of the condensation box 318. An air supply fan 327 is installed at one end of the air supply pipe 326, and the air outlet end of the air supply fan 327 is connected to one end of the air supply pipe 326. When the air supply fan 327 is started, the air supply fan 327 blows air into the air supply pipe 326 to accelerate the air flow inside the air supply pipe 326 and reduce the pressure inside the air supply pipe 326. Under the action of the pressure difference, the steam in the collecting box 324 and the steam connecting pipe 325 can quickly enter the condensation box 318.

[0028] The input ends of the exhaust fan 216, the drive motor 220, the bidirectional motor 227, the suction fan 234, the cooling water pump 310, the water pump 316 and the air supply fan 327 are electrically connected to the output end of the external controller, and the input end of the external controller is electrically connected to the output end of the external power supply. By controlling the external controller, each electrical component can be quickly controlled, which facilitates the control of the equipment. At the same time, the air supply pipe 223, the water supply pipe 311, the return pipe 315, the evaporation connecting pipe 323, the collection box 324 and the steam connecting pipe 325 are all metal corrugated hoses, which ensure flexibility while also having high temperature resistance.

[0029] A boron-containing high-chromium cast iron is manufactured by a medium-frequency furnace for processing the boron-containing high-chromium cast iron.

[0030] The working principle and use process of the present invention are as follows: during the process of smelting the metal inside the smelting furnace 202 by the medium frequency furnace, the metal to be smelted next time is placed inside the storage barrel 226. At this time, the sealing cover 207 is above the connecting port 206, and the connecting port 206 is in a sealed state. The lifting cylinder 224 is controlled to drive the storage barrel 226 to move, so that the air supply hole 222 on the arc-shaped gas box 221 is aligned with the air inlet hole 233, and the driving motor 220 is started. The driving motor 220 drives the bidirectional screw 218 to rotate, and under the limiting and guiding action of the limiting slide bar 217, the two moving frames 219 and the arc-shaped gas box 221 are driven to approach each other, so that the two arc-shaped gas boxes 221 are in contact with the outside of the storage barrel 226. At this time, the air supply hole 222 is connected to the air inlet hole 233, and the exhaust fan 216 is started. The waste smoke generated by the smelting passes through the exhaust hole 214 enters the telescopic inner tube 213 and the telescopic outer tube 212. Under the guidance of the exhaust fan 216, the waste smoke enters the filter box 215, which can effectively filter out impurities in the high-temperature gas. The filter box 215 filters the waste smoke and filters out dust impurities in the waste smoke. The filtered waste smoke flows through the air supply pipe 223 into the arc-shaped air box 221, and then flows through the air supply hole 222 and the air inlet hole 233 into the storage barrel 226. The filtered high-temperature waste smoke dries the metal charge inside the storage barrel 226, so that the heat contained in the waste smoke is effectively utilized, and there is no need to dry the charge separately. The arc-shaped air box 221 and the storage barrel 226 are both made of metal iron and have good thermal conductivity. The waste smoke heats the arc-shaped air box 221 while also heating the storage barrel 226, so that the drying effect is better.

[0031] After the smelting of the charge inside the smelting furnace 202 is completed, the lifting cylinder 204 drives the heat insulation cover 205 to rise, and the driving motor 220 drives the arc-shaped gas box 221 to separate from the storage barrel 226. The lifting cylinder 224 drives the storage barrel 226 to rise. After the smelting furnace 202 pours out the smelted charge inside and returns to its original position, the lifting cylinder 204 drives the heat insulation cover 205 to descend. At the same time, the driving cylinder 210 is started, and the driven gear 209 is meshed with the driving rack 211. The driving cylinder 210 drives the driven gear 209, the rotating shaft 208 and the sealing cover 207 to rotate, and the sealing cover 207 is removed from the top of the connecting port 206. Subsequently, the lifting cylinder 224 drives the storage barrel 226 to descend, and the bottom of the storage barrel 226 passes through the connecting port 206 and enters the interior of the smelting furnace 202. When the bottom of the storage barrel 226 is close to the inner bottom of the smelting furnace 202, the bidirectional motor 227 is started, and the bidirectional motor 227 drives the winding The roller 228 rotates, the wire rope 232 is lengthened, and the unloading plate 230 is opened. Subsequently, the lifting cylinder 224 drives the storage barrel 226 to rise, and the charge inside the storage barrel 226 is sent into the smelting furnace 202. After the charge inside the storage barrel 226 is discharged, the bidirectional motor 227 drives the unloading plate 230 to return to its original position, and the bottom of the storage barrel 226 is sealed. The lifting cylinder 224 drives the storage barrel 226 to rise. After the storage barrel 226 is separated from the connecting port 206, the driving cylinder 210 drives the sealing cover 207 to rotate to seal the connecting port 206. The lifting cylinder 224 drives the storage barrel 226 to move to the inside of the smelting furnace 202, so that the bottom of the storage barrel 226 is close to the inner bottom of the smelting furnace 202. When the charge descends, the distance between the charge and the inner bottom of the smelting furnace 202 is relatively close, which reduces the impact of the charge on the bottom of the smelting furnace 202, protects the smelting furnace 202, and prolongs the service life of the smelting furnace 202.

[0032] In subsequent processing, the above steps can be repeated. During the smelting process of the smelting furnace 202, the charge is added into the storage barrel 226 in advance. When feeding into the smelting furnace 202 next time, the dried charge in the storage barrel 226 can be quickly fed into the smelting furnace 202, with a short waiting time, high production continuity and higher production efficiency.

[0033] When the charge is smelted, the cooling water pump 310 is started, and cold water is transported in the gap between the cold water tank 308 and the cooling water tank 309. Distilled water is stored in the cooling water tank 309. The water in the cold water tank 308 enters the induction coil 301 through the water pipe 311 to cool the induction coil 301. The water pump 316 is started, and the water inlet end of the water pump 316 is connected to the external water source. The water transported by the water pump 316 enters the cooling water box 319 through the water pipe 317 and the water inlet main pipe 320, and then flows through the cooling water box 319, the drainage main pipe 321, the drainage pipe 322, the evaporation connecting pipe 323 and the evaporation pipe 305 into the annular pipe 304, and finally sprayed out from the side spray hole 306. The sprayed water acts on the inside of the annular evaporation box 303. When the induction coil 301 heats the charge, the heat emitted by the charge heats the annular evaporation box 303, and the water sprayed from the side spray hole 306 contacts the high-temperature annular evaporation box 303, and the sprayed water absorbs heat and evaporates to form water vapor, which then flows through the steam pipe 307 and the steam connecting pipe 325 into the collection box 324. At the same time, the air supply fan 327 is started, and the air supply fan 327 blows air into the air supply pipe 326 to accelerate the air flow inside the air supply pipe 326 and reduce the pressure inside the air supply pipe 326. Under the action of the pressure difference, the steam inside the collection box 324 and the steam connecting pipe 325 quickly enters the condensation box 318, and the annular evaporation box 303 evaporates water to absorb heat, which can isolate the heat emitted by the charge and make the working environment more comfortable.

[0034] The hot water vapor contacts the outer surface of the cold cooling water box 319. After the cooling water evaporates into water vapor inside the annular evaporation box 303, there is no scale in the water vapor. The clean water vapor condenses into water droplets when it is cold. The condensed water droplets drip into the cold water tank 308. When the cooling water pump 310 subsequently transports the condensed water in the cold water tank 308 to the inside of the induction coil 301, the water produced by the condensation of the water vapor cools the induction coil 301. The water produced by the condensation of the water vapor does not contain scale, so that scale is prevented from accumulating inside the induction coil 301. While cooling the induction coil 301, the dissipated heat is effectively utilized. There is no need to manually disassemble the induction coil 301 to clean the induction coil 301, which reduces labor costs, extends the continuous use time of the induction coil 301, and improves production efficiency.

[0035] After the induction coil 301 is cooled, it flows through the return pipe 315 into the water distribution box 313, and finally flows into the cold water tank 308. The water distribution hole 314 can disperse the returning cooling water, increase the contact area between the returning cooling water and the air, and quickly cool down the returning cooling water during its falling process. When a lot of water is accumulated in the cold water tank 308, the water in the cold water tank 308 is transported to the water source at the water inlet end of the water supply pump 316, so as to realize the recycling of water and be more environmentally friendly.

[0036] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A medium frequency furnace for processing boron-containing high-chromium cast iron, comprising a support frame (1), characterized in that: A flue gas utilization component (2) is arranged between the two support frames (1), and the flue gas utilization component (2) comprises a protective tube (201); A protective cylinder (201) is rotatably mounted between the two support frames (1), a smelting furnace (202) is mounted inside the protective cylinder (201), a U-shaped frame (203) is mounted on one side of the protective cylinder (201), a lifting cylinder (204) is mounted on one end of the U-shaped frame (203), an output end of the lifting cylinder (204) is connected to one side of the top of a heat shield (205), the heat shield (205) is located at the top of the protective cylinder (201), a connecting port (206) is opened in the middle of the heat shield (205), and the connecting port (206) A sealing cover (207) is rotatably installed on the top, the other end of the U-shaped frame (203) is connected to a telescopic outer tube (212), the inner bottom of the telescopic outer tube (212) is slidably connected to a telescopic inner tube (213), the top of the heat insulation cover (205) is located at the bottom of the telescopic inner tube (213) and an exhaust hole (214) is opened, the bottom of the telescopic inner tube (213) is connected to the exhaust hole (214), and one side of the telescopic outer tube (212) is connected to the air inlet end of the exhaust fan (216) through a filter box (215); A limit slide bar (217) is installed on the top of the heat shield (205) located on one side of the sealing cover (207), and a bidirectional screw rod (218) is rotatably installed on the top of the heat shield (205) located on the other side of the sealing cover (207). Two moving frames (219) are respectively connected between the two ends of the limit slide bar (217) and the two ends of the bidirectional screw rod (218), and one side of the moving frame (219) is connected to one side of the arc-shaped air box (221), and the other side of the arc-shaped air box (221) is evenly provided with a plurality of air supply holes (219). 22), the air outlet end of the exhaust fan (216) is connected to one end of two air supply pipes (223), the other ends of the two air supply pipes (223) are respectively connected to one side of two arc-shaped air boxes (221), a lifting cylinder (224) is installed on the other side of the protective cylinder (201), the output end of the lifting cylinder (224) is connected to a supporting suspension (225), the top end of the supporting suspension (225) is connected to a material storage barrel (226), and a plurality of air inlet holes (233) are evenly opened on both sides of the material storage barrel (226).

2. The medium frequency furnace for processing boron-containing high-chromium cast iron according to claim 1, characterized in that: A rotating shaft (208) is rotatably mounted on one side of the top of the heat shield (205) close to the connecting port (206); one side of the rotating shaft (208) is connected to one side of the sealing cover (207); the top of the rotating shaft (208) is connected to a driven gear (209); a driving cylinder (210) is mounted on one side of the top of the heat shield (205) close to the driven gear (209); an output end of the driving cylinder (210) is connected to a driving rack (211); the driven gear (209) is meshed with the driving rack (211).

3. The medium frequency furnace for processing boron-containing high-chromium cast iron according to claim 1, characterized in that: A driving motor (220) is installed at the top of the heat insulation cover (205) near one end of the bidirectional screw (218); an output end of the driving motor (220) is connected to one end of the bidirectional screw (218); the moving frame (219) is slidably connected to the limiting sliding rod (217); and the moving frame (219) and the bidirectional screw (218) are connected via a threaded hole.

4. The medium frequency furnace for processing boron-containing high-chromium cast iron according to claim 3, characterized in that: The cross-sectional shape of the limiting sliding rod (217) is rectangular, and the outer side of the limiting sliding rod (217) is a smooth surface.

5. The medium frequency furnace for processing boron-containing high-chromium cast iron according to claim 1, characterized in that: A bidirectional motor (227) is installed at the top of one side of the storage barrel (226), and a winding roller (228) is connected to the output end of the bidirectional motor (227). A blanking plate (230) is hingedly connected to the bottom of the storage barrel (226), and connecting ears (231) are provided on both sides of the blanking plate (230). A guide wheel (229) is rotatably installed in the middle of both sides of the storage barrel (226) and located on the top of the connecting ears (231). A steel wire rope (232) is connected between the winding roller (228) and the adjacent connecting ears (231), and the steel wire rope (232) is in contact with one side of the adjacent guide wheel (229); An air suction fan (234) is installed on the top of the support suspension (225), and an air suction hood (235) is connected to the air inlet end of the air suction fan (234).

6. The medium frequency furnace for processing boron-containing high-chromium cast iron according to claim 1, characterized in that: The number of the air supply holes (222) and the air inlet holes (233) is the same, and the diameter of the air supply holes (222) is equal to the diameter of the air inlet holes (233).

7. The medium frequency furnace for processing boron-containing high-chromium cast iron according to claim 1, characterized in that: A heat recovery component (3) is arranged outside the smelting furnace (202), and the heat recovery component (3) comprises an induction coil (301); An induction coil (301) is installed outside the smelting furnace (202) and inside the protective tube (201), and both ends of the induction coil (301) are connected to connectors (302). An annular evaporation box (303) is installed outside the induction coil (301) and inside the protective tube (201), and an annular tube (304) is installed inside the annular evaporation box (303). Both sides of the annular tube (304) are evenly spaced and provided with a plurality of side spray holes (306). One side of the top of the annular tube (304) is connected to one end of an evaporation tube (305), and the other end of the evaporation tube (305) sequentially penetrates the top of the annular evaporation box (303) and one side of the protective tube (201). The top of the annular evaporation box (303) is connected to one end of a plurality of steam pipes (307), and the other end of the steam pipes (307) penetrates one side of the protective tube (201); A cold water tank (308) is installed on one side of the protective tube (201), a cooling water tank (309) is installed inside the cold water tank (308), a cooling water pump (310) is installed on one side of the cold water tank (308), a water inlet end of the cooling water pump (310) passes through one side of the cold water tank (308) and is connected to the bottom of one side of the cooling water tank (309), a water outlet end of the cooling water pump (310) is connected to a connector (302) located at the bottom through a water delivery pipe (311), an assembly frame (312) is installed on the top of the cooling water tank (309), a water supply pump (316) is installed on one side of the cooling water pump (310), a water outlet end of the water supply pump (316) is connected to a water supply pipe (317), and a condensation tank (318) is installed on one side of the assembly frame (312). ), a plurality of cooling water boxes (319) are installed at intervals inside the condensation box (318); the bottom of the cooling water box (319) is connected to a water inlet main pipe (320); one end of the water supply pipe (317) is connected to the bottom of the water inlet main pipe (320); the top of the cooling water box (319) is connected to a drainage main pipe (321); the top of the drainage main pipe (321) is connected to a drainage pipe (322); the drainage pipe (322) is connected to the evaporation pipe (305) via an evaporation connecting pipe (323); a collection box (324) is installed at the bottom of the assembly frame (312); one side of the collection box (324) is connected to the steam pipe (307) via a steam connecting pipe (325); the bottom of the collection box (324) is connected to the top of the air supply pipe (326).

8. The medium frequency furnace for processing boron-containing high-chromium cast iron according to claim 7, characterized in that: A water separation box (313) is fixed to the top of the bottom surface of the assembly frame (312), and water separation holes (314) are evenly opened at the bottom of the water separation box (313). The top of the water separation box (313) is connected to another connector (302) located at the top through a return pipe (315).

9. The medium frequency furnace for processing boron-containing high-chromium cast iron according to claim 7, characterized in that: An air supply pipe (326) is connected through one side of the condensation box (318), an air supply fan (327) is installed at one end of the air supply pipe (326), and an air outlet end of the air supply fan (327) is connected to one end of the air supply pipe (326); The input ends of the exhaust fan (216), the drive motor (220), the bidirectional motor (227), the air intake fan (234), the cooling water pump (310), the water supply pump (316) and the air supply fan (327) are electrically connected to the output end of the external controller, and the input end of the external controller is electrically connected to the output end of the external power supply.

10. A boron-containing high-chromium cast iron, characterized in that: A boron-containing high-chromium cast iron manufactured by a medium-frequency furnace for processing the boron-containing high-chromium cast iron according to any one of claims 1 to 9.

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