Electroslag remelting furnace electrode stem purging device

Abstract

The invention discloses an electroslag remelting furnace electrode stem purging device and a working method thereof.The electroslag remelting furnace electrode stem purging device comprises a carbon brush chassis, an electroslag furnace charge rod penetrates through the center of the carbon brush chassis, a plurality of carbon brush supports are installed on the carbon brush chassis, and a plurality of carbon brush insulating rings are arranged among the carbon brush supports in a stacked mode; a plurality of power supply carbon brushes penetrate through the carbon brush insulating rings in the radial direction, a plurality of gas guide vertical pipes jointly penetrate through each carbon brush insulating ring in the axial direction, a plurality of purging notches are formed in the carbon brush insulating rings in the radial direction and located on the sides, close to an electroslag furnace material rod, of the gas guide vertical pipes, and the purging notches communicate with the inner side walls of the gas guide vertical pipes and the inner side walls of the carbon brush insulating rings. High-speed airflow is output through the purging notch, slag ash attached to the electroslag furnace material rod after work is blown away, the labor intensity of workers is relieved, the material preparation time is shortened, meanwhile, the carbon brush insulating ring is directly arranged on the carbon brush insulating ring, the overall concentration ratio is improved, the carbon brush insulating ring is simple and efficient, and normal electricity taking and using of the electroslag furnace material rod are not affected.

Description

Technical Field

[0001] The invention relates to the technical field of special metallurgical equipment, in particular to an electrode rod purging device for an electroslag remelting furnace. Background Art

[0002] The electroslag furnace has a monopoly in the production of large and medium-sized forgings and module blanks. It has an absolute advantage in high-quality tool steel, maraging steel, duplex steel pipe billets, and cold-rolled roll electroslag steel. The electroslag casting of special-shaped parts is unique.

[0003] The electroslag furnace is an indispensable production equipment for special steel plants. In the past, the purging of the feed rod of the protective atmosphere electroslag furnace was just a simple ventilation and purging when the feed rod moved up and down after the steelmaking was completed. The slag ash and carbon brush ash attached to the feed rod could not be purged cleanly, and workers were required to carefully clean the feed rod after the steelmaking was completed in preparation for the subsequent steelmaking.

[0004] The application document with publication number CN109385537A discloses a cleaning and blowing device for a charge rod and collector ring of an electric slag furnace in a protective atmosphere, and an electric slag furnace. The cleaning and blowing device comprises: a fixed plate, a support and a fan, wherein the fixed plate is horizontally arranged at the lowermost edge of the furnace head of the collector ring of the electric slag furnace in a protective atmosphere and the side of the sliding collector ring; the support is vertically arranged on the fixed plate, and the support is provided with holes. The fan is fixed on the support and at both ends of the holes, and the holes facilitate the smooth flow of air from the outside to the charge rod by the fan; the fan has a blowing port for blowing out cleaning air, and the blowing port is arranged toward the direction of the charge rod.

[0005] The above-mentioned device has the following shortcomings: when in use, it is necessary to set up multiple additional structures, and there are many purge components, which may easily cause a high failure rate and affect actual production. Moreover, the above-mentioned device does not take into account the pollution caused by the purge when it is working, which may easily cause serious air pollution. At the same time, the above-mentioned device only uses conventional purge to clean the electrode rods of the electric slag furnace, and cannot clean the slag ash with strong adhesion. The cleaning effect is not ideal and still requires further manual cleaning. Summary of the invention

[0006] The object of the present invention is to provide an electrode rod purging device for an electroslag remelting furnace in view of the above-mentioned problems and shortcomings, thereby improving the overall working efficiency.

[0007] The present invention solves at least one of the following technical problems: (1) The above device needs to be equipped with multiple structures when in use, and the number of purge parts is large, which is likely to cause a high failure rate and affect actual production; (2) The above device did not take into account the pollution caused by purging when it was in operation, which could easily cause serious air pollution; (3) The above device only uses conventional blowing to clean the electrode rods of the electroslag furnace. The slag ash with strong adhesion cannot be blown away completely, and the cleaning effect is not ideal. Further manual cleaning is still required.

[0008] The objective of the present invention can be achieved through the following technical scheme: a purging device for an electrode rod of an electroslag remelting furnace, comprising a carbon brush chassis pierced by an electroslag furnace material rod at the center, a plurality of carbon brush brackets are installed on the carbon brush chassis, a plurality of carbon brush insulating rings are stacked between the plurality of carbon brush brackets, a plurality of power supply carbon brushes are pierced through the carbon brush insulating rings in the radial direction, a plurality of gas guide vertical pipes are pierced through each carbon brush insulating ring in the axial direction, a plurality of purging slots are provided on the carbon brush insulating rings in the radial direction and on the side of the gas guide vertical pipe close to the electroslag furnace material rod, and the purging slots are connected to the gas guide vertical pipe and the inner side wall of the carbon brush insulating ring.

[0009] As a further scheme of the invention, a lower insulating flange is installed at the bottom of the carbon brush chassis, an upper insulating flange is installed on the top of the carbon brush insulating ring on the top layer, an upper pressure ring is installed on the top of the upper insulating flange, and a lower pressure ring is installed on the bottom of the lower insulating flange. Each carbon brush insulating ring is axially penetrated by a mounting screw, and the two ends of the mounting screw respectively pass through the upper insulating flange and the upper pressure ring as well as the lower insulating flange and the lower pressure ring, and mounting nuts are installed at both ends of the mounting screw. An air guide ring pipe is installed on the top of the air guide vertical pipe, one side of the air guide ring pipe is connected to the air supply pipe and the other side is connected to the air supply pipe, both ends of the air guide vertical pipe are threaded with fixing nuts, and a sealing head is installed at the lower end of the air guide vertical pipe.

[0010] As a further scheme of the invention, a sealing cylinder is provided on the carbon brush chassis and the outer cover of the carbon brush bracket, the electric slag furnace material rod passes through the middle part of the sealing cylinder and forms an abutting seal with the sealing cylinder at the penetration point, the bottom of the sealing cylinder is connected with a discharge pipe, the discharge pipe is connected with an air turbine box, the bottom of the air turbine box is connected with a dust removal cylinder, a transmission box is installed on the top of the air turbine box, a collecting box is installed at the bottom of the dust removal cylinder, a filter cloth box is installed on one side of the top of the transmission box, the dust removal cylinder is connected with one side of the filter cloth box through the air pipe, the other side of the filter cloth box is connected with a circulating air pump, and the output end of the circulating air pump is connected with the air supply pipe.

[0011] As a further scheme of the invention, a conveying motor is embedded in the bottom of the outer peripheral side wall of the sealing cylinder. The guide rail of the conveying motor is annular and coaxial with the sealing cylinder and the electroslag furnace material rod. A laser head is installed on the side of the conveying motor close to the electroslag furnace material rod. A power supply slip ring is provided on the sealing cylinder and below the guide rail of the conveying motor. The conveying motor and the laser head are both powered by the power supply slip ring.

[0012] As a further scheme of the invention, the dust collecting cylinder includes an ash guiding cylinder, the outer periphery of which is sleeved with a plurality of first receiving rings, the outer side surface of the first receiving ring is equipped with a plurality of first scrapers, the outer periphery of the ash guiding cylinder is sleeved with a second receiving ring at the lower part of the outer periphery, the outer peripheral side wall of the ash guiding cylinder is provided with a plurality of ash guiding grooves, the ash guiding grooves respectively correspond to the first receiving ring and the second receiving ring, the ash guiding cylinder is connected to the collecting box through a supporting bearing and is rotatably connected, a plurality of deflection rings are sleeved on the inner side wall of the dust collecting cylinder, a plurality of second scrapers are installed on the outer side surface of the deflection ring, a plurality of third scrapers are installed on the top of the inner side wall of the dust collecting cylinder, the plurality of third scrapers are regularly distributed in a single-layer annular array, the first receiving ring and the deflection ring are arranged in a uniformly staggered and stacked structure, the second receiving ring is located at the lower side of the bottommost deflection ring, and the upper surfaces of the first receiving ring, the deflection ring and the second receiving ring are fixedly connected with a plurality of mutually coaxial blocking rings.

[0013] As a further scheme of the invention, each layer of first scraper blades corresponds one-to-one with the deflection ring and is always located above the inner side of the corresponding deflection ring, the first scraper blade abuts against the deflection ring, each layer of second scraper blades and third scraper blades corresponds one-to-one with the first receiving ring and the second receiving ring and is always located above the inner side of the corresponding first receiving ring or the second receiving ring, the first receiving ring abuts against the corresponding second scraper blade and the third scraper blade, and the second receiving ring abuts against the corresponding second scraper blade and the third scraper blade.

[0014] As a further solution of the invention, the first receiving ring, the deflection ring and the second receiving ring are all inverted frustum-shaped structures, the first receiving ring and the second receiving ring both maintain a gap with the inner wall of the dust collecting cylinder, the deflection ring maintains a gap with the outer wall of the ash guiding cylinder, the length of the first scraper blade is at least greater than the difference between the inner and outer diameters of the deflection ring, and the lengths of the second scraper blade and the third scraper blade are at least greater than the difference between the inner and outer diameters of the corresponding first receiving ring and the second receiving ring.

[0015] As a further scheme of the invention, an ash drawer is provided in the collection box, a transmission rotating rod is passed through the middle of the air guide turbine box, the transmission rotating rod is sealed and rotatably connected with the air guide turbine box, a transmission turbine is provided in the middle of the air guide turbine box, the transmission rotating rod passes through the transmission turbine and is coaxial and fixedly connected thereto, a speed reduction gear set is installed at both ends of the transmission rotating rod, the speed reduction gear set consists of a number of speed reduction gears that mesh with each other and form a speed reduction gear set for reducing speed and increasing torque, the speed reduction gear set at the lower end of the transmission rotating rod transmits the ash guide cylinder, two mutually perpendicular and meshing transmission bevel gears are installed on the top of the transmission box, the speed reduction gear set at the top of the transmission rotating rod transmits the horizontal transmission bevel gear, and the axis of the vertical transmission bevel gear is fixedly passed through a transmission shaft, and the transmission shaft is rotatably connected to the transmission box and the filter cloth box respectively.

[0016] As a further solution of the invention, the filter cloth box is provided with two containing chambers, a filter cloth drum is installed in the containing chamber far away from the transmission box, a transmission shaft is passed through the other containing chamber, and a winding sleeve is spliced ​​on the transmission shaft, a first air guide hood is connected to the middle part of the filter cloth box and one side close to the circulating air pump, a second air guide hood is connected to the other side of the middle part of the filter cloth box, the first air guide hood is connected to the circulating air pump, the second air guide hood is connected to the air guide pipe, the filter cloth of the filter cloth drum passes through the filter cloth box and the first The air guide hood and the second air guide hood are wound on the winding sleeve, the hood opening of the first air guide hood is sealed with a first pressure frame, the first pressure frame is in contact with one side of the filter cloth, and the other side of the filter cloth is in contact with a second pressure frame, the outer periphery of the second pressure frame is sealed with a corrugated hood cylinder, the corrugated hood cylinder is sealed and connected with the second air guide hood, a number of evenly distributed limit springs are installed between the second pressure frame and the second air guide hood, and both containing chambers are provided with a deflection roller for abutting the side of the filter cloth against the inner wall of the filter cloth box.

[0017] A working method of an electrode rod purging device for an electroslag remelting furnace comprises the following steps: Step 1: Output high-speed airflow in a direction perpendicular to the peripheral side of the electroslag furnace charge rod through the purging slot to blow away the attached carbon powder, and at the same time blow away the slag ash attached to the electroslag furnace charge rod after work. The airflow forms a circulating carrier in the process of purging, flowing, filtering and conveying, which is used to carry and clean the pollutants generated by the electroslag furnace charge rod; Step 2: The conveying motor stably moves the laser head along its own circular guide rail according to the needs, and the laser head emits laser to clean the surface of the electroslag furnace rod, further eliminating the attached slag ash, and the laser head can cover most areas by moving the electroslag furnace rod up and down; Step 3: The slag ash and smoke generated by the cleaning of the laser head are collected and input downward into the exhaust pipe through the sealing cylinder, and then input into the air guide turbine box through the exhaust pipe. The air guide turbine box uses the airflow to generate torque and drive the transmission box and the dust removal cylinder. The airflow entering the dust removal cylinder flows in a corrugated cylinder structure. The particles carried in the airflow gradually adhere to the surface to form a filtering effect. The dust removal cylinder filters most of the impurities in the slag ash and smoke. The filtered slag ash is enriched and falls into the collection box for timely cleaning. The airflow that has been filtered once passes through the filter cloth box along the air guide pipe, and the remaining impurities are filtered again through the filter cloth box, thereby filtering out clean airflow; Step 4: Use a circulating air pump to pressurize the gas into the gas pipe, input it into the gas guide ring pipe, and evenly and highly pressurized it into each gas guide vertical pipe through the gas guide ring pipe, and then blow it out through the purge slot again to purge the surface of the electroslag furnace charge rod.

[0018] Beneficial effects of the present invention: (1) When working, high-speed airflow is output through the purge slot to blow away the slag and ash attached to the electroslag furnace rod after work, reducing the labor intensity of workers and reducing the material preparation time. At the same time, by directly setting it on the carbon brush insulation ring, the overall concentration is improved, and the increase in volume and duplication of structure are avoided while having multiple functions, further improving the overall structural stability. It is simple and efficient, and does not affect the normal power supply and use of the electroslag furnace rod, which is very suitable for promotion; (2) During operation, the slag ash and smoke generated by laser head cleaning are collected and input into the exhaust pipe, air guide turbine box, dust removal cylinder, air guide pipe through the filter cloth box, circulating air pump, air delivery pipe, air guide ring pipe and air guide vertical pipe, and then blown out through the purging slot and the surface of the electric slag furnace material rod is purged to achieve the best cleaning effect. At the same time, the impurities and other pollutants generated by the cleaning are collected and processed in a centralized manner to avoid escaping and polluting the air. The pollution caused by the replacement of filtering tools can be reduced by repeated use, and the consumption rate of the filter cloth can be reduced, thereby reducing costs. (3) During operation, the laser head is stably moved along its own circular guide rail by the conveying motor according to the demand, and the laser head emits laser to clean the surface of the electroslag furnace rod, further eliminating the attached slag ash, and the laser head can cover most areas by moving the electroslag furnace rod up and down, ensuring that the slag ash with strong adhesion can also be cleaned; (4) During operation, the airflow is only used to carry and clean the pollutants generated by the electroslag furnace rod, so that it can not only maintain a sealed and stable atmosphere during the cleaning process, but also keep the atmosphere of the environment where the electroslag furnace rod is working stable and avoid changes. It can also reduce the loss of atmosphere through circulation, reduce production costs, and can efficiently cooperate with the sealing and long-term operation of the entire production line; (5) When working, the airflow entering the dust collection cylinder flows in a corrugated cylinder structure, and the particles carried in the airflow gradually adhere to the surface, forming a filtering effect. While the airflow flows, the dust collection cylinder rotates continuously, so that the first scraper, the second scraper and the third scraper are constantly displaced and scraped off the attached matter, and the attached matter finally falls into the collection box. No additional energy consumption is required, and almost no replacement is required. It is durable, efficient and environmentally friendly. (6) When the air guide turbine box receives the airflow, it guides the airflow into a vortex shape and uses it to drive the transmission turbine to rotate, and then drives the transmission rod, the ash guide cylinder, and the transmission shaft to rotate. At the same time, the airflow velocity is reduced to facilitate the precipitation and adhesion of the smoke and dust carried, and cooperate with subsequent filtration to improve energy efficiency and maintain environmental protection; (7) During operation, the filter cloth is continuously rolled up, and fine smoke and dust are filtered and collected through the filter cloth, so that clean airflow continues to circulate. By making full use of the filter cloth, the filtration efficiency remains unchanged, ensuring the best filtration effect and full utilization rate. By closely contacting, impurities are prevented from bypassing the filter cloth, ensuring full filtration. The overall drive does not consume additional energy, and is environmentally friendly and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a side view of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the carbon brush bracket and the carbon brush insulating ring of the present invention; Figure 3 for Figure 2 A magnified schematic diagram of the middle A area; Figure 4 for Figure 2 A magnified schematic diagram of the middle B area; Figure 5 It is a cross-sectional view of the overall structure of the air guide turbine box and the dust removal cylinder of the present invention; Figure 6 It is a cross-sectional view of the overall structure of the ash guide cylinder of the present invention; Figure 7 It is a cross-sectional view of the overall structure of the dust removal cylinder of the present invention; Figure 8 It is a cross-sectional view of the overall structure of the filter cloth box of the present invention; Fig. 9 It is a partial structural cross-sectional view of the first receiving ring, the deflection ring and the second receiving ring of the present invention; In the figure: 100, electric slag furnace material rod; 101, carbon brush chassis; 102, carbon brush bracket; 103, carbon brush insulation ring; 104, power supply carbon brush; 105, upper insulation flange; 106, upper pressure ring; 107, gas guide vertical pipe; 108, gas guide ring pipe; 109, air supply pipe; 110, lower insulation flange; 111, purge slot; 112, fixed nut; 113, plugging head; 114, mounting screw; 115, mounting nut; 116, lower pressure ring; 201, sealing cylinder; 202, discharge pipe; 203, gas guide turbine box; 204, dust removal cylinder; 205, collection box; 206, gas guide pipe; 207, filter cloth box; 208, circulating air pump; 209, gas transmission pipe; 210, transmission motor; 211, laser head; 212 , power supply slip ring; 213, transmission box; 301, ash guide cylinder; 302, first receiving ring; 303, first scraper; 304, deflection ring; 305, second scraper; 306, third scraper; 307, second receiving ring; 308, ash guide trough; 309, support bearing; 310, ash collection drawer; 311, transmission rotating rod; 312, transmission turbine; 313, transmission shaft; 314, transmission bevel gear; 315, speed reduction gear set; 316, blocking ring; 401, containing chamber; 402, filter cloth reel; 403, winding sleeve; 404, first air guide hood; 405, second air guide hood; 406, first pressure frame; 407, second pressure frame; 408, corrugated cover cylinder; 409, limit spring; 410, deflection roller. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] See also Figure 1-9 As shown: a purging device for an electrode rod of an electroslag remelting furnace, comprising a carbon brush chassis 101 pierced at the center by an electroslag furnace material rod 100, a plurality of carbon brush brackets 102 are installed on the carbon brush chassis 101, a plurality of carbon brush insulating rings 103 are stacked and arranged between the plurality of carbon brush brackets 102, a plurality of power supply carbon brushes 104 are pierced through the carbon brush insulating rings 103 in the radial direction, a plurality of gas guide vertical pipes 107 are pierced through each carbon brush insulating ring 103 in the axial direction, a plurality of purging slots 111 are opened on the carbon brush insulating ring 103 in the radial direction and on one side of the gas guide vertical pipe 107 close to the electroslag furnace material rod 100, and the purging slots 111 are connected to the gas guide vertical pipe 107 and the inner side wall of the carbon brush insulating ring 103; The power supply carbon brushes 104, the gas guide vertical pipes 107, and the purge slots 111 are all regularly distributed in a circular array. The power supply carbon brushes 104 are powered by power supply cables buried in the carbon brush bracket 102. The gas guide vertical pipes 107 and the purge slots 111 provided on each carbon brush insulating ring 103 correspond to each other one by one. The purge slots 111 face the peripheral side of the electroslag furnace material rod 100, so that the purge slots 111 output high-speed airflow to the peripheral side of the electroslag furnace material rod 100. A lower insulating flange 110 is installed at the bottom of the carbon brush chassis 101, an upper insulating flange 105 is installed on the top of the carbon brush insulating ring 103 located at the top layer, an upper pressing ring 106 is installed on the top of the upper insulating flange 105, and a lower pressing ring 116 is installed at the bottom of the lower insulating flange 110. Each carbon brush insulating ring 103 is axially penetrated by a mounting screw 114, and the two ends of the mounting screw 114 respectively penetrate the upper insulating flange 105 and the upper pressing ring 106 and the lower insulating flange 110 and the lower pressing ring 116, and both ends of the mounting screw 114 are installed with mounting nuts 115; The top of the gas guide vertical pipe 107 is connected to the gas guide ring pipe 108, one side of the gas guide ring pipe 108 is connected to the gas supply pipe 109 and the other side is connected to the gas delivery pipe 209. Both ends of the gas guide vertical pipe 107 are threaded with fixed nuts 112, and the lower end of the gas guide vertical pipe 107 is installed with a plug head 113; When the present embodiment is working, the electroslag furnace feed rod 100 draws electricity by abutting against each power supply carbon brush 104. The power supply carbon brush 104 will leave carbon powder produced by friction on the surface of the electroslag furnace feed rod 100 when the electroslag furnace feed rod 100 passes by. A high-speed airflow is output in a direction perpendicular to the side surface of the electroslag furnace feed rod 100 through the purge slot 111 to blow away the attached carbon powder, and at the same time, the slag ash attached to the electroslag furnace feed rod 100 after work is blown away, so as to clean the electroslag furnace feed rod 100, reduce the labor intensity of the workers and reduce the preparation time. At the same time, the air guide riser 107 and the purge slot 111 are directly arranged on the carbon brush insulating ring 103, so as to improve the overall concentration, avoid the increase of volume and duplication of structure while having multiple functions, and cooperate with the mounting screws 114 and the mounting nuts 115 to restrain and fix the carbon brush insulating ring 103, so as to further improve the overall structural stability.

[0023] The outer peripheral cover of the carbon brush chassis 101 and the carbon brush bracket 102 is provided with a sealing cylinder 201, the electroslag furnace material rod 100 passes through the middle part of the sealing cylinder 201 and forms an abutting seal with the sealing cylinder 201 at the penetration point, the bottom of the sealing cylinder 201 is connected with a discharge pipe 202, the discharge pipe 202 is connected with an air guide turbine box 203, the bottom of the air guide turbine box 203 is connected with a dust removal cylinder 204, the top of the air guide turbine box 203 is installed with a transmission box 213, the bottom of the dust removal cylinder 204 is installed with a collection box 205, a filter cloth box 207 is installed on one side of the top of the transmission box 213, the dust removal cylinder 204 is connected with one side of the filter cloth box 207 through the air guide pipe 206, the other side of the filter cloth box 207 is connected with a circulating air pump 208, and the output end of the circulating air pump 208 is connected with the air supply pipe 209; A conveying motor 210 is embedded and installed at the bottom of the outer peripheral side wall of the sealing cylinder 201. The guide rail of the conveying motor 210 is annular and coaxial with the sealing cylinder 201 and the electroslag furnace material rod 100. A laser head 211 is installed on the side of the conveying motor 210 close to the electroslag furnace material rod 100. A power supply slip ring 212 is provided on the sealing cylinder 201 and below the guide rail of the conveying motor 210. Both the conveying motor 210 and the laser head 211 are powered by the power supply slip ring 212. When the embodiment is working, the conveying motor 210 stably moves the laser head 211 along its own circular guide rail according to the demand, and the laser head 211 emits a laser to clean the surface of the electroslag furnace feed rod 100, thereby further eliminating the attached slag ash, and the laser head 211 can cover most areas by moving the electroslag furnace feed rod 100 up and down, ensuring that the ash slag with strong adhesion can also be cleaned; The slag ash blown out of the purge slot 111 and released along the gaps and the slag ash smoke generated by the laser head 211 are collected and input downward into the discharge pipe 202 through the discharge pipe 202, and then input into the air guide turbine box 203 through the discharge pipe 202. The air guide turbine box 203 generates torque by using the air flow to drive the transmission box 213 and the dust removal cylinder 204. The dust removal cylinder 204 filters most of the impurities in the slag ash smoke. The filtered slag ash is enriched and falls into the collection box 205 for timely cleaning. The airflow that has been filtered once passes through the filter cloth box 207 along the air guide pipe 206, and the remaining impurities are filtered again by the filter cloth box 207, thereby filtering out The clean airflow is then pressurized and transported to the air delivery pipe 209 through the circulating air pump 208, and then input into the air guide ring pipe 108 through the air guide ring pipe 108, and then evenly and highly pressured transported to each air guide vertical pipe 107 through the air guide ring pipe 108, and then blown out through the purge slot 111 again to purge the surface of the electroslag furnace material rod 100, thereby efficiently and fully cleaning the electroslag furnace material rod 100 to achieve the best cleaning effect. At the same time, impurities and other pollutants generated by the cleaning are collected and processed in a centralized manner to avoid escaping and polluting the air. The dust removal cylinder 204 is first filtered, which can be reused to reduce the pollution caused by the replacement of filtering tools, and can also reduce the consumption rate of the filter cloth and reduce costs. The airflow forms a circulating carrier during the process of blowing, flowing, filtering and conveying, which is used to carry and clean the pollutants generated by the electroslag furnace feed rod 100, so as to maintain a sealed and stable atmosphere protection during the cleaning process, and to cooperate with the atmosphere of the environment in which the electroslag furnace feed rod 100 is working to maintain stability and avoid changes. It can also reduce the loss of atmosphere through circulation, and only needs to be replenished when the atmosphere changes, thereby reducing production costs and efficiently cooperating with the sealing and long-term operation of the entire production line.

[0024] The dust collecting cylinder 204 comprises an ash guiding cylinder 301, the outer periphery of which is sleeved with a plurality of first receiving rings 302, the outer side surface of which is mounted with a plurality of first scraping blades 303, the outer lower periphery of the ash guiding cylinder 301 is sleeved with a second receiving ring 307, the outer peripheral side wall of the ash guiding cylinder 301 is provided with a plurality of ash guiding grooves 308, the ash guiding grooves 308 respectively correspond to the first receiving ring 302 and the second receiving ring 307, the ash guiding cylinder 301 is connected to the collecting box 205 through a supporting bearing 309 and is rotatably connected, a plurality of deflection rings 304 are sleeved on the inner side wall of the dust collecting cylinder 204, a plurality of second scraping blades 305 are mounted on the outer side surface of the deflection ring 304, a plurality of third scraping blades 306 are mounted on the top of the inner side wall of the dust collecting cylinder 204, and a plurality of third The scrapers 306 are regularly distributed in a single-layer annular array, the first receiving ring 302 and the deflection ring 304 are arranged in a uniformly staggered stacking structure, the second receiving ring 307 is located at the lower side of the bottom deflection ring 304, the first scrapers 303 of each layer correspond to the deflection ring 304 one by one and are always located above the inner side of the corresponding deflection ring 304, the first scrapers 303 abut against the deflection ring 304, the second scrapers 305 and the third scrapers 306 of each layer correspond to the first receiving ring 302 and the second receiving ring 307 one by one and are always located above the inner side of the corresponding first receiving ring 302 or the second receiving ring 307, the first receiving ring 302 abuts against the corresponding second scrapers 305 and the third scrapers 306, and the second receiving ring 307 abuts against the corresponding second scrapers 305 and the third scrapers 306; The bottom edge of the ash conveying groove 308 of this embodiment is larger than the inner and outer diameter difference between the first receiving ring 302 and the second receiving ring 307. When the present embodiment is working, the airflow entering the dust collecting cylinder 204 is guided by the first receiving ring 302, the deflection ring 304 and the second receiving ring 307, and flows in a corrugated cylinder structure. During the long-term flow along the surface of the first receiving ring 302, the deflection ring 304 and the second receiving ring 307, the particles carried in the airflow are subjected to multiple collisions and frictions with the first receiving ring 302, the deflection ring 304 and the second receiving ring 307, thereby gradually adhering to the surface and forming a filtering effect. While the airflow is flowing, the guide cylinder 301 rotates continuously, so that the first scraper 303 is relatively smooth. The deflection ring 304 is continuously displaced to scrape off the attachments, the second scraper 305 is continuously displaced relative to the corresponding first receiving ring 302 and the second receiving ring 307 to scrape off the attachments, and the third scraper 306 is continuously displaced relative to the corresponding first receiving ring 302 to scrape off the attachments. The attachments move down along the inclined surface formed by the inner walls of the first receiving ring 302 and the second receiving ring 307, pass through the ash guiding groove 308 and the ash guiding cylinder 301 and finally fall into the collection box 205. The rotation of the ash guiding cylinder 301 is driven by the flow of air, without the need for additional energy consumption and almost no need for replacement, and can operate for a long time.

[0025] The collection box 205 is provided with an ash collection drawer 310, a transmission rotating rod 311 is penetrated in the middle of the air guide turbine box 203, and the transmission rotating rod 311 is sealed and rotatably connected with the air guide turbine box 203. A transmission turbine 312 is provided in the middle of the air guide turbine box 203, and the transmission rotating rod 311 penetrates the transmission turbine 312 and is coaxial and fixedly connected with the transmission turbine 312. Both ends of the transmission rotating rod 311 are installed with a speed reduction gear set 315, and the speed reduction gear set 315 consists of a plurality of speed reduction gears that mesh with each other and form a speed reduction and torque increase system. The deceleration gear set 315 at the lower end of the transmission rotating rod 311 transmits the ash guide cylinder 301. Two mutually perpendicular and meshing transmission bevel gears 314 are installed on the top of the transmission box 213. The deceleration gear set 315 at the top of the transmission rotating rod 311 transmits the horizontal transmission bevel gear 314. The axis of the vertical transmission bevel gear 314 is fixedly penetrated with a transmission shaft 313. The transmission shaft 313 is rotatably connected to the transmission box 213 and the filter cloth box 207 respectively. When the present embodiment is working, when the air guide turbine box 203 receives the airflow, the air guide turbine box 203 guides the airflow into a vortex shape and is used to drive the transmission turbine 312 to rotate, and then drives the transmission rotating rod 311 to rotate, and decelerates and increases the torque through the speed reduction gear set 315 below, and drives the ash guide cylinder 301 to rotate, and decelerates and increases the torque through the speed reduction gear set 315 above, and is transmitted through the transmission bevel gear 314, and drives the transmission shaft 313 to rotate, driving the filter cloth box 207 to operate, and at the same time, the airflow velocity is reduced after driving the transmission turbine 312, so as to facilitate the precipitation and adhesion of the smoke and dust carried, and the overall velocity of the airflow can be just slowed down, and the converted energy can be utilized in conjunction with subsequent filtration, thereby improving energy efficiency and maintaining environmental protection.

[0026] A plurality of coaxial blocking rings 316 are fixedly connected to the upper surfaces of the first receiving ring 302 , the deflection ring 304 and the second receiving ring 307 . The blocking rings 316 block the airflow to improve the dust settling and adhesion efficiency.

[0027] A working method of an electrode rod purging device for an electroslag remelting furnace comprises the following steps: Step 1: A high-speed airflow is outputted in a direction perpendicular to the side of the electroslag furnace feed rod 100 through the purging notch 111 to blow away the attached carbon powder, and at the same time, the slag ash attached to the electroslag furnace feed rod 100 after work is blown away. The airflow forms a circulating carrier in the process of purging, flowing, filtering and conveying, which is used to carry and clean the pollutants generated by the electroslag furnace feed rod 100; Step 2: The laser head 211 is stably moved along its own circular guide rail by the conveying motor 210 according to the demand, and the laser head 211 emits a laser to clean the surface of the electroslag furnace charge rod 100, so as to further remove the attached slag ash, and the laser head 211 can cover most areas by moving the electroslag furnace charge rod 100 up and down; Step 3: The slag ash and smoke generated by the cleaning of the laser head 211 and the blowing slot 111 are blown through the sealing cylinder 201 and collected and input downward into the exhaust pipe 202, and then input into the air guide turbine box 203 through the exhaust pipe 202. The air guide turbine box 203 generates torque by using the push of the air flow and drives the transmission box 213 and the dust removal cylinder 204. The airflow entering the dust removal cylinder 204 flows in a corrugated cylinder structure, and the particles carried in the airflow gradually adhere to the surface to form a filtering effect. The dust removal cylinder 204 filters most of the impurities in the slag ash and smoke, and the filtered slag ash is enriched and falls into the collection box 205 for timely cleaning. The airflow that has been filtered once passes through the filter cloth box 207 along the air guide pipe 206, and the remaining impurities are filtered again by the filter cloth box 207, thereby filtering out clean airflow; Step 4: The circulating air pump 208 is used to pressurize the gas into the gas delivery pipe 209, and then the gas is input into the gas guide ring pipe 108 through the gas guide ring pipe 108, and then the gas is evenly and highly pressurizedly delivered to each gas guide vertical pipe 107, and then the gas is blown out through the purge slot 111 again to purge the surface of the electroslag furnace material rod 100.

[0028] The filter cloth box 207 is provided with two containing chambers 401, a filter cloth reel 402 is installed in the containing chamber 401 far away from the transmission box 213, a transmission shaft 313 is passed through the other containing chamber 401, and a winding sleeve 403 is spliced ​​and sleeved on the transmission shaft 313, a first air guide cover 404 is connected to the middle part of the filter cloth box 207 and one side close to the circulating air pump 208, a second air guide cover 405 is connected to the other side of the middle part of the filter cloth box 207, the first air guide cover 404 is connected to the circulating air pump 208, the second air guide cover 405 is connected to the air guide pipe 206, the filter cloth of the filter cloth reel 402 passes through the filter cloth box 207 and passes through the first air guide cover The air hood 404 and the second air guide hood 405 are wound on the winding sleeve 403. The hood opening of the first air guide hood 404 is sealed with a first pressing frame 406, which is in contact with one side of the filter cloth, and the other side of the filter cloth is in contact with a second pressing frame 407. The outer periphery of the second pressing frame 407 is sealed with a corrugated hood cylinder 408, which is in sealed communication with the second air guide hood 405. A number of evenly distributed limit springs 409 are installed between the second pressing frame 407 and the second air guide hood 405. A deflection roller 410 for making the side of the filter cloth abut against the inner wall of the filter cloth box 207 is provided in the two containing chambers 401. When the present embodiment is working, the transmission shaft 313 continuously rotates the winding sleeve 403 through the transmission of the transmission box 213, and continuously winds up the filter cloth. At the same time, the airflow of the remaining fine smoke and dust passes through the filter cloth along the air guide pipe 206 and the second air guide cover 405, and the fine smoke and dust are filtered and collected through the filter cloth, so as to obtain a clean airflow and input it into the first air guide cover 404, and finally input it into the circulating air pump 208 for continued circulation. By continuously winding up the filter cloth, each position of the filter cloth can participate in the filtration, and the filter cloth is fully utilized, so that the filtration efficiency remains unchanged, avoiding the efficiency reduction due to excessive use of a certain segment, ensuring the best filtering effect and full utilization rate, and the second pressure frame 407 is always in close contact with the first pressure frame 406 through the limit spring 409 to prevent impurities from winding around the filter cloth, ensuring full filtration, and the overall drive does not require consumption of additional energy, which is environmentally friendly and efficient.

[0029] When the present invention is in use, the worker outputs a high-speed airflow through the purge slot 111 to blow away the slag and ash attached to the electroslag furnace feed rod 100 after work, thereby reducing the labor intensity of the workers and reducing the material preparation time. At the same time, by directly setting it on the carbon brush insulating ring 103, the overall concentration is improved, and the increase in volume and the duplication of structure are avoided in the case of having multiple functions, and the overall structural stability is further improved. It is simple and efficient, and does not affect the normal power supply and use of the electroslag furnace feed rod 100, and is very suitable for promotion. During operation, the slag ash and smoke generated by the cleaning of the laser head 211 and the slag ash and smoke generated by the cleaning of the purge slot 111 are collected and input into the discharge pipe 202, the air guide turbine box 203, the dust removal cylinder 204, the air guide pipe 206, the filter cloth box 207, the circulating air pump 208, the air delivery pipe 209, the air guide ring pipe 108 and the air guide vertical pipe 107, and are blown out through the purge slot 111 and the surface of the electroslag furnace material rod 100 is purged to achieve the best cleaning effect. At the same time, the impurities and other pollutants generated by the cleaning are collected and processed in a centralized manner to avoid escaping and polluting the air. The pollution caused by the replacement of the filter tool can be reduced by repeated use, and the consumption rate of the filter cloth can be reduced, thereby reducing the cost. During operation, the laser head 211 is stably moved along its own circular guide rail by the conveying motor 210 according to the demand, and the laser head 211 emits a laser to clean the surface of the electroslag furnace charge rod 100, thereby further removing the attached slag ash, and the laser head 211 can cover most areas by moving the electroslag furnace charge rod 100 up and down, ensuring that the ash slag with strong adhesion can also be cleaned; During operation, the airflow is only used to carry and clean the pollutants generated by the electroslag furnace charge rod 100, so that the airflow can not only maintain the sealing and stable atmosphere protection during the cleaning process, but also keep the atmosphere of the environment where the electroslag furnace charge rod 100 is working stable and avoid changes, and can also reduce the loss of atmosphere through circulation, thereby reducing production costs, and can effectively cooperate with the sealing and long-term operation of the entire production line; When working, the airflow entering the dust collecting cylinder 204 flows in a corrugated cylinder structure, and the particles carried in the airflow gradually adhere to the surface, forming a filtering effect. While the airflow flows, the dust collecting cylinder 301 rotates continuously, so that the first scraper 303, the second scraper 305 and the third scraper 306 are continuously displaced and scraped off the attached matter, and the attached matter finally falls into the collection box 205, without any additional energy consumption and almost no need for replacement, which is durable, efficient and environmentally friendly. During operation, when the air guide turbine box 203 receives the airflow, the air guide turbine box 203 guides the airflow into a vortex shape and is used to drive the transmission turbine 312 to rotate, and then drives the transmission rotating rod 311, the ash guide cylinder 301, and the transmission shaft 313 to rotate. At the same time, the airflow velocity is reduced to facilitate the precipitation and adhesion of the carried smoke and dust, and cooperate with subsequent filtration to improve energy efficiency and maintain environmental protection; When working, the filter cloth is continuously rolled up, and at the same time, fine smoke and dust are filtered and collected through the filter cloth, so that the clean airflow continues to circulate. By making full use of the filter cloth, the filtration efficiency remains unchanged, ensuring the best filtration effect and full utilization rate. Through close contact, impurities are prevented from bypassing the filter cloth, ensuring full filtration. The overall drive does not consume additional energy, and is environmentally friendly and efficient.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An electrode rod purging device for an electroslag remelting furnace, characterized in that: The invention comprises a carbon brush chassis (101) which is penetrated at the center by an electroslag furnace material rod (100), a plurality of carbon brush brackets (102) are installed on the carbon brush chassis (101), a plurality of carbon brush insulating rings (103) are stacked and arranged between the plurality of carbon brush brackets (102), a plurality of power supply carbon brushes (104) are penetrated by the carbon brush insulating rings (103) in the radial direction, a plurality of gas guide vertical pipes (107) are penetrated by each carbon brush insulating ring (103) in the axial direction, a plurality of purge slots (111) are opened on the carbon brush insulating ring (103) in the radial direction and on a side of the gas guide vertical pipe (107) close to the electroslag furnace material rod (100), and the purge slots (111) are connected to the gas guide vertical pipe (107) and the inner side wall of the carbon brush insulating ring (103).

2. The electrode rod purging device for an electroslag remelting furnace according to claim 1, characterized in that: The bottom of the carbon brush chassis (101) is provided with a lower insulating flange (110), the top of the carbon brush insulating ring (103) located at the top layer is provided with an upper insulating flange (105), the top of the upper insulating flange (105) is provided with an upper pressing ring (106), and the bottom of the lower insulating flange (110) is provided with a lower pressing ring (116), and each carbon brush insulating ring (103) is provided with a mounting screw (114) in the axial direction, and the two ends of the mounting screw (114) respectively penetrate the upper insulating flange (105) and the upper pressing ring (106). 6) and a lower insulating flange (110) and a lower pressure ring (116), and both ends of the mounting screw (114) are installed with mounting nuts (115), the top of the gas guide vertical pipe (107) is connected to the gas guide ring pipe (108), one side of the gas guide ring pipe (108) is connected to the gas supply pipe (109) and the other side is connected to the gas supply pipe (209), both ends of the gas guide vertical pipe (107) are threadedly sleeved with fixing nuts (112), and the lower end of the gas guide vertical pipe (107) is installed with a plugging head (113).

3. The electrode rod purging device for an electroslag remelting furnace according to claim 2, characterized in that: The outer peripheral cover of the carbon brush chassis (101) and the carbon brush bracket (102) is provided with a sealing cylinder (201); the electroslag furnace material rod (100) penetrates the middle part of the sealing cylinder (201) and forms an abutting seal with the sealing cylinder (201) at the penetration point; the bottom of the sealing cylinder (201) is connected to a discharge pipe (202); the discharge pipe (202) is connected to an air guide turbine box (203); the bottom of the air guide turbine box (203) is connected to a dust removal cylinder (204); the air guide turbine A transmission box (213) is installed on the top of the box (203), a collection box (205) is installed on the bottom of the dust removal cylinder (204), a filter cloth box (207) is installed on one side of the top of the transmission box (213), the dust removal cylinder (204) is connected to one side of the filter cloth box (207) through an air guide pipe (206), the other side of the filter cloth box (207) is connected to a circulating air pump (208), and the output end of the circulating air pump (208) is connected to an air supply pipe (209).

4. The electrode rod purging device for an electroslag remelting furnace according to claim 3, characterized in that: A conveying motor (210) is embedded and installed at the bottom of the outer peripheral side wall of the sealing cylinder (201); the guide rail of the conveying motor (210) is annular and coaxial with the sealing cylinder (201) and the electroslag furnace material rod (100); a laser head (211) is installed on the side of the conveying motor (210) close to the electroslag furnace material rod (100); a power supply slip ring (212) is provided on the sealing cylinder (201) and below the guide rail of the conveying motor (210); and both the conveying motor (210) and the laser head (211) are powered via the power supply slip ring (212).

5. The electrode rod purging device for an electroslag remelting furnace according to claim 3, characterized in that: The dust removal cylinder (204) comprises an ash guide cylinder (301), the outer periphery of which is sleeved with a plurality of first receiving rings (302), the outer side surface of which is mounted with a plurality of first scrapers (303), the outer periphery of which is sleeved with a second receiving ring (307), the outer periphery of which is sleeved with a plurality of ash guide grooves (308), the outer periphery of which is provided with a plurality of ash guide grooves (308), the ash guide grooves (308) corresponding to the first receiving ring (302) and the second receiving ring (307), respectively, the ash guide cylinder (301) is connected to and rotatably connected with the collection box (205) via a support bearing (309), and the dust removal cylinder (20 4), a plurality of deflection rings (304) are sleeved on the inner side wall, a plurality of second scrapers (305) are installed on the outer side surface of the deflection ring (304), a plurality of third scrapers (306) are installed on the top of the inner side wall of the dust removal cylinder (204), the plurality of third scrapers (306) are regularly distributed in a single-layer annular array, the first receiving ring (302) and the deflection ring (304) are arranged in a uniformly staggered stacking structure, the second receiving ring (307) is located at the lower side of the bottommost deflection ring (304), and the upper surfaces of the first receiving ring (302), the deflection ring (304) and the second receiving ring (307) are all fixedly connected to a plurality of mutually coaxial blocking rings (316).

6. The electrode rod purging device for an electroslag remelting furnace according to claim 5, characterized in that: The first scraper blades (303) of each layer correspond one-to-one with the deflection ring (304) and are always located above the inner side of the corresponding deflection ring (304); the first scraper blade (303) abuts against the deflection ring (304); the second scraper blades (305) and the third scraper blades (306) of each layer correspond one-to-one with the first receiving ring (302) and the second receiving ring (307) and are always located above the inner side of the corresponding first receiving ring (302) or the second receiving ring (307); the first receiving ring (302) abuts against the corresponding second scraper blade (305) and the third scraper blade (306); the second receiving ring (307) abuts against the corresponding second scraper blade (305) and the third scraper blade (306).

7. The electrode rod purging device for an electroslag remelting furnace according to claim 5, characterized in that: The first receiving ring (302), the deflection ring (304) and the second receiving ring (307) are all in the form of an inverted truncated cone; the first receiving ring (302) and the second receiving ring (307) both maintain a gap with the inner wall of the dust removal cylinder (204); the deflection ring (304) maintains a gap with the outer wall of the ash guide cylinder (301); the length of the first scraper (303) is at least greater than the difference between the inner and outer diameters of the deflection ring (304); and the lengths of the second scraper (305) and the third scraper (306) are at least greater than the difference between the inner and outer diameters of the corresponding first receiving ring (302) and second receiving ring (307).

8. The electrode rod purging device for an electroslag remelting furnace according to claim 3, characterized in that: The collection box (205) is provided with an ash collection drawer (310), a transmission rotating rod (311) is passed through the middle of the air guide turbine box (203), the transmission rotating rod (311) is connected to the air guide turbine box (203) in a sealed and rotatable manner, a transmission turbine (312) is provided in the middle of the air guide turbine box (203), the transmission rotating rod (311) passes through the transmission turbine (312) and is coaxially and fixedly connected thereto, and a speed reduction gear set (315) is installed at both ends of the transmission rotating rod (311), the speed reduction gear set (315) comprises a plurality of speed reduction gears that mesh with each other and form a speed reduction and torque increase mechanism. The deceleration gear set (315) at the lower end of the transmission rotating rod (311) transmits the ash guide cylinder (301). Two mutually perpendicular and meshing transmission bevel gears (314) are installed on the top of the transmission box (213). The deceleration gear set (315) at the top of the transmission rotating rod (311) transmits the horizontal transmission bevel gear (314). The axis of the vertical transmission bevel gear (314) is fixedly penetrated by a transmission shaft (313). The transmission shaft (313) is rotatably connected to the transmission box (213) and the filter cloth box (207) respectively.

9. The electrode rod purging device for an electroslag remelting furnace according to claim 3, characterized in that: The filter cloth box (207) is provided with two containing chambers (401), a filter cloth reel (402) is installed in the containing chamber (401) far from the transmission box (213), a transmission shaft (313) is passed through the other containing chamber (401), and a winding sleeve (403) is spliced ​​and sleeved on the transmission shaft (313), a first air guide cover (404) is connected to the middle part of the filter cloth box (207) and a side close to the circulating air pump (208), and a second air guide cover (405) is connected to the other side of the middle part of the filter cloth box (207), the first air guide cover (404) is connected to the circulating air pump (208), the second air guide cover (405) is connected to the air guide pipe (206), and the filter cloth of the filter cloth reel (402) passes through the filter cloth box (207) and passes through the air guide pipe (206). The filter cloth passes between the first air guide hood (404) and the second air guide hood (405) and is wound on the winding sleeve (403); a first pressing frame (406) is installed at the hood opening of the first air guide hood (404) in a sealing manner; the first pressing frame (406) is in contact with one side of the filter cloth; a second pressing frame (407) is installed in contact with the other side of the filter cloth; a corrugated hood cylinder (408) is sealedly sleeved on the outer periphery of the second pressing frame (407); the corrugated hood cylinder (408) is in sealing communication with the second air guide hood (405); a plurality of evenly distributed limit springs (409) are installed between the second pressing frame (407) and the second air guide hood (405); and a deflection roller (410) for causing the side surface of the filter cloth to be in contact with the inner wall of the filter cloth box (207) is provided in both the two containing chambers (401).

10. The working method of the electrode rod purging device of the electroslag remelting furnace according to claim 4, characterized in that: The steps include: Step 1: a high-speed airflow is outputted in a direction perpendicular to the peripheral side of the electroslag furnace charge rod (100) through the purging notch (111) to blow away the attached carbon powder, and at the same time blow away the slag ash attached to the electroslag furnace charge rod (100) after operation, wherein the airflow forms a circulating carrier in the process of purging, flowing, filtering and conveying, and is used to carry and clean the pollutants generated by the electroslag furnace charge rod (100); Step 2: The laser head (211) is stably moved along its own annular guide rail by the conveying motor (210) according to demand, and the laser head (211) emits a laser to clean the surface of the electroslag furnace charge rod (100) by laser to remove the attached slag ash, and the laser head (211) can cover most areas by moving the electroslag furnace charge rod (100) up and down; Step 3: The slag ash and smoke generated by the cleaning of the laser head (211) and the slag ash blown out of the purge slot (111) and escaping along the gap are collected through the sealing cylinder (201) and input downward into the discharge pipe (202), and then input into the air guide turbine box (203) through the discharge pipe (202). The air guide turbine box (203) generates torque by using the push of the air flow and drives the transmission box (213) and the dust removal cylinder (204). The air flow entering the dust removal cylinder (204) flows in a corrugated cylinder structure, and the particles carried in the air flow gradually adhere to the surface, forming a filtering effect. The dust removal cylinder (204) filters most of the impurities in the slag ash and smoke, and the filtered slag ash is enriched and falls into the collection box (205) for timely cleaning. The air flow that has been filtered once passes through the filter cloth box (207) along the air guide pipe (206), and the remaining impurities are filtered again by the filter cloth box (207), thereby filtering out clean air flow; Step 4: The circulating air pump (208) is used to pressurize the gas into the gas delivery pipe (209), and then the gas is input into the gas guide ring pipe (108) through the gas guide ring pipe (108). The gas is evenly and highly pressurizedly delivered to each gas guide vertical pipe (107) through the gas guide ring pipe (108), and then blown out through the purge slot (111) again to purge the surface of the electroslag furnace charge rod (100).

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