A furnace wall slag cleaning device

Abstract

The present invention relates to the technical field of slag cleaning, and in particular to a furnace wall slag cleaning device, comprising a center column, a scraper disk fixedly connected to the bottom of the center column, the scraper disk comprising a plurality of scraper arms extending outward, a traction chain installed on the top of the center column, an air flow groove 1 being provided inside the scraper arm, the air flow groove 1 passing through to the end of the scraper arm, the center column being arranged in sections, a reduction motor for driving the center column of the lower section to rotate being fixedly connected to the center column of the upper section, an air pump for transmitting air flow to the air flow groove 1 being installed inside the center column, through this arrangement, not only is a strong and powerful scraping and cleaning work of the electric furnace wall slag achieved, but the entire scraping work is completed through mechanical control, and at the same time, the overall equipment has a simple structure and is easy to operate, which effectively reduces the failure rate of the equipment, and is suitable for scraping the inner walls of electric furnaces with various inner diameters and depths.

Description

Technical Field

[0001] The invention relates to the technical field of steel slag cleaning, in particular to a furnace wall steel slag cleaning device. Background Art

[0002] During the smelting process of the electric furnace, a lot of steel slag will stick to the furnace wall. The steel slag attached to the furnace wall will reduce the heat conduction efficiency and increase energy consumption. Cleaning it can improve production efficiency. The steel slag on the furnace wall may mix into the molten steel, affecting the quality and performance of the steel. Cleaning it can ensure product quality.

[0003] The cleaning time of slag on the wall of electric furnace usually depends on many factors, including the frequency of use of the electric furnace, the degree of slag accumulation, etc. The cleaning cycle may be once a week or once a month, depending on the accumulation rate of slag and production needs.

[0004] In traditional slag cleaning work on electric furnace walls, due to the strong adhesion between the slag and the furnace wall, tools such as slag hammers and pneumatic hammers are generally used to knock the slag off the furnace wall. This method is simple and direct, but there are safety hazards. The operator needs to enter the high-temperature furnace and it is easy to generate a lot of dust. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a furnace wall slag cleaning device, comprising a central column, a scraper disk fixedly connected to the bottom of the central column, the scraper disk comprising a plurality of scraper arms extending outward, a traction chain installed on the top of the central column, an air flow groove 1 is opened inside the scraper arm, the air flow groove 1 extends to the end of the scraper arm, the central column is arranged in sections, a reduction motor for driving the central column of the lower section to rotate is fixedly connected to the central column of the upper section, and an air pump for transmitting air flow to the air flow groove 1 is installed inside the central column;

[0006] Use the suspension equipment to fix the traction chain from above, so that the center column and scraper are lifted up by the traction chain, and the lifting and translation of the center column and scraper are controlled by the suspension equipment; move the center column to the top of the electric furnace that needs to be cleaned, lower the center column and scraper, let the center column and scraper sink to the bottom of the electric furnace, then translate the center column and scraper, let the scraper arm extending outward fit the inner wall of the electric furnace, and at the same time, the moving end of the suspension equipment continues to translate until the top of the traction chain moves away from the top of the electric furnace. At this time, the center column will tilt, and the top edge of the center column will also fit the inner wall of the electric furnace, forming a triangular gap space between the electric furnace and the center column. At the same time, the traction chain will also fit the top edge of the electric furnace; start the suspension equipment to lift the traction chain, control the center column and scraper to move upward, because at this time the center column and scraper are tightly attached to the wall of the electric furnace, and the center column is metal The material is large in size. In the tilted state, it will provide a large horizontal force component to the scraper, so that the scraper arm can be pressed tightly against the electric furnace wall, so that in the process of the overall rising of the device, the slag on the electric furnace wall can be effectively scraped off by the scraper arm. The longer the scraper arm extended outward, the greater the inclination angle of the center column, and the greater the horizontal force component. The longer scraper arm is used to clean the slag with strong adhesion. When the scraper moves to the top of the electric furnace, the center column is controlled to move to other positions through the suspension equipment to scrape the slag on other parts. This setting not only realizes the strong scraping and cleaning of the slag on the electric furnace wall, but also the whole scraping work is completed through mechanical control. At the same time, the overall equipment has a simple structure and is easy to operate, which effectively reduces the failure rate of the equipment and is suitable for scraping the inner walls of electric furnaces with different inner diameters and depths.

[0007] Due to the heavy weight of the center column, it is easy to have control difficulties during the transfer process. After the scraper arm has cleaned the slag once, the center column can be lowered to the bottom of the original electric furnace, keeping the center column tilted, and starting the reduction motor to control the lower half of the center column to rotate, thereby driving the scraper to rotate. Since the scraper arm fits against the inner wall of the electric furnace, as the scraper arm rotates, the huge friction between the scraper arm and the electric furnace wall will drive the center column and the scraper to move along the electric furnace wall. At the same time, the suspension equipment must also synchronously control the traction chain to move. Through this setting, it can be ensured that the center column and the scraper can be moved stably and accurately to the area of ​​the furnace wall that has not yet been scraped, and the next scraping of slag can be carried out, which effectively reduces the unstable phenomenon such as swinging generated during the adjustment of the movement of the center column, and further reduces the difficulty of operation.

[0008] In one embodiment of the present invention, through the arrangement of the air pump and the air flow slot 1, the end of the air flow slot 1 passes through the end of the scraper arm, which is exactly the position where the scraper arm contacts the wall of the electric furnace; through the scraping of the scraper arm and the wall of the electric furnace, a large area of ​​slag can be removed, but the contact friction can easily produce a cleaning dead angle, resulting in some residues being difficult to clean in place, and a high-pressure airflow is transmitted to the air flow slot 1 through the air pump, and at the same time, the suspension equipment is controlled to return to the upper side of the electric furnace so that the central column no longer tilts, and the slag on the wall of the electric furnace is sprayed and peeled off by the high-pressure airflow, and at the same time, the reduction motor is started to drive the lower half of the central column and the scraper to rotate, so that the airflow ejected by multiple scraper arms can be relatively In order to act evenly on the electric furnace wall; it should be noted that the part being cleaned at this time is only the part of the electric furnace wall where the scraper is in contact; the center column is controlled to move upward to allow the high-pressure airflow to clean from bottom to top; this cleaning process is carried out after the scraper arm has cleaned; since the center column is heavy and the jetted airflow diffuses in all directions, the center column will not be moved away from the electric furnace wall during the cleaning process; through this arrangement, the cleaning effect of the steel slag on the inner wall of the electric furnace is further improved, and after the physical friction of the scraper arm has cleaned large pieces of steel slag on a large scale, the airflow is used to clean the remaining steel slag again, which can ensure that the amount of steel slag remaining on the inner wall of the electric furnace after cleaning is greatly reduced, meeting the cleaning requirements.

[0009] In one embodiment of the present invention, the scraper also includes a base plate, which is fixed to the bottom center position of the central column, and multiple scraper arms are arranged in a circular shape and equidistantly on the outside of the base plate, thereby ensuring the uniform shape of the overall scraper, so that no matter how the central column rotates, the scraper arms can be fitted with the electric furnace wall to complete the slag scraping work.

[0010] In one embodiment of the present invention, the number of the traction chains is four, and a hook plate is fixed between the tops of the four traction chains. The four traction chains are distributed in a ring on the top surface of the central column. The top of the reduction motor is fixed with a charging base, and the charging base is located in the middle of the top surface of the central column. The outer side of the central column is fixed with multiple heat dissipation ribs near the top. The arrangement of the four traction chains can ensure that the central column maintains a stable vertical state when it is suspended again. At the same time, during the movement of the central column, the four traction chains can also maintain the center of gravity position of the central column, reducing the swing of the central column. Under the fixation of the four traction chains, the upper half of the central column is also firmly restricted, so that the reduction motor can stably drive the rotation process of the lower half of the central column. The reduction motor is input with power through the charging base, and can also be made into a storage type, and the wire connection is disconnected during operation. Since the reduction motor is in contact with the metal central column, heat can be directly transferred. By adding heat dissipation ribs, the heat dissipation of the reduction motor can be effectively increased.

[0011] In one embodiment of the present invention, a vertical slide groove is opened in the middle of the bottom surface of the base plate, and a vertically arranged extrusion rod is slidably connected in the slide groove. The bottom of the extrusion rod is made of elastic material. In the final stage of the scraping process of the center column, the scraper will detach from the top of the electric furnace. In order to reduce the safety hazard caused by the center column swinging outward significantly during detachment, an extrusion rod is provided. When the center column moves to the bottom of the electric furnace, the extrusion rod will return to the slide groove under the action of extrusion. As the center column rises, the extrusion rod will extend outward under the action of gravity. When the center column detaches from the top of the electric furnace, the extrusion rod will contact the top edge of the electric furnace to prevent the center column from swinging outward. At the same time, the bottom of the extrusion rod is made of elastic material, which will deform when it contacts the electric furnace, thereby reducing damage to the electric furnace.

[0012] In one embodiment of the present invention, an air flow groove 2 connected to the air pump is provided inside the scraper arm, and the end of the air flow groove 2 passes through the end of the scraper arm, and the air flow groove 2 is located above the air flow groove 1. The end of the air flow groove 2 is slidably connected with a ejection block. During the slag scraping process, it is easy for the steel slag to be too hard. If the center column is controlled by the suspension equipment to hit the steel slag, not only is the operation more difficult, but the force is also difficult to control, causing damage to the electric furnace. Through the setting of the ejection block, the air pump is provided with two air outlet ends, and air pressure is quickly transmitted to the air flow groove 2 through one of the air outlet ends, and the output is stopped after a few seconds, thereby ejecting the ejection block outward. At this time, the center column still remains tilted. Inclined state, so that when the ejector block is ejected, the ejector block close to the electric furnace wall will collide with the slag, generating a reaction force, thereby pushing the center column outward, and then the center column will collide with the slag under the action of gravity, and at the same time the ejector block will be squeezed back into the air flow groove 2, waiting for the next ejection work. Through this setting, the effect of regulating the scraper arm to repeatedly collide with the slag is achieved, and at the same time, the ejector block will also collide with the slag when ejecting, so as to remove the slag with greater adhesion, and this method is simple to control, and the force of the center column hitting the slag can be regulated by controlling the output power of the air pump; during the impact process, the inclination of the center column can be appropriately reduced to ensure that the reaction force of the ejector block can push the center column.

[0013] In one embodiment of the present invention, a transmission groove 1 and a transmission groove 2 connected to the output end of the air pump are provided inside the central column, and a centralizing disk and a centralizing ring are also provided inside the central column. The transmission groove 1 is connected to the centralizing disk, and the transmission groove 2 is connected to the centralizing ring. Multiple air flow grooves 1 are connected to the centralizing disk, and multiple air flow grooves 2 are connected to the centralizing ring. After the air pump outputs air pressure to the transmission groove 1 and the transmission groove 2, it will first come to the centralizing disk and the centralizing ring, and then the air pressure will be evenly transported to the multiple air flow grooves 1 and the air flow groove 2, completing the ejection of the ejection block and the air flow injection of the air flow groove 2, and cleaning the steel slag.

[0014] In one embodiment of the present invention, a guide bar is fixed to the bottom of the scraper, and the guide bar is arranged in a spiral line form. The concentrating plate and the chute are connected to each other. As the slag is cleaned, more slag will accumulate at the bottom of the electric furnace. Generally, all the slag that falls on the bottom is taken out after the cleaning is completed. However, in the middle of the cleaning, there will be too much slag at the bottom and the scraper cannot sink to the bottom. During the downward movement of the scraper, the air pump is started to transmit air pressure to the concentrating plate through the second transmission groove. The end outlet of the second airflow groove is narrow and the ejected air flow is limited. When the air pump power is increased, part of the air flow will enter the chute. After the extrusion rod is pushed out, a large amount of air flow is ejected outward from the chute, thereby cleaning the bottom slag. At the same time, after the scraper is pressed against the bottom of the furnace, the lower half of the central column is rotated, and the guide bar in the shape of a spiral line can be used to transfer the slag at the bottom of the scraper along the diffusion direction of the guide bar to the outside of the scraper, thereby ensuring that the scraper can sink to the bottom smoothly and clean the slag from the bottom.

[0015] In one embodiment of the present invention, a storage groove for placing an air pump is provided on the outer side of the center column, a sealing cover adapted to the outer shape of the center column is installed on the outer side of the storage groove, a ventilation hood is installed on the surface of the sealing cover, and a clamping groove for slidingly clamping two sections of the center column is provided in the middle of the center column. The air pump can be removed outward from the storage groove for easy replacement and maintenance. The overall center column is made of solid metal, and a counterweight groove is also provided inside the center column to ensure that after the air pump is installed, the center of gravity of the overall center column is at its own geometric center. In order to maintain the integrity of the outer side of the center column, the sealing cover obtains the air absorbed by the air pump from the ventilation hood, and the ventilation hood can also filter some steel slag debris. At the same time, since the center column is in a tilted state when scraping the slag, the ventilation hood will not be blocked. The clamping groove is used to support the lower half of the center column instead of letting the rotating shaft of the reduction motor bear the weight.

[0016] In one embodiment of the present invention, the ejection block includes a sealing plate, two round rods are fixedly connected to the end of the sealing plate, the sealing plate is slidably engaged with the second air flow groove, and the round rods penetrate to the outside of the scraper arm. When the air pressure is injected into the second air flow groove, the sealing plate will be squeezed and pushed to obtain power to move outward, thereby pushing the two round rods outward and hitting the slag through the round rods; the generation of power for the ejection block has an acceleration stage, which ensures that the ejection block has greater kinetic energy when ejecting.

[0017] In one embodiment of the present invention, a spring is fixed between the sealing plate and the airflow groove one, and the ends of the airflow groove one and the airflow groove two are connected in one direction through a one-way valve. When the sealing plate moves to the limit and fits the ends of the airflow groove two, the airflow groove one and the airflow groove two will be connected. Before this, the position where the two are connected is blocked by the sealing plate. When the ejection block is completely ejected outward, the two are connected, allowing excess air pressure to be released from one end of the airflow groove, and then the ejection block will return to its position under the action of the spring.

[0018] The above technical solution of the present invention has the following advantages over the prior art:

[0019] The furnace wall slag cleaning device of the present invention, through the arrangement of the central column, the scraper plate and the scraper arm, not only realizes the powerful scraping and cleaning work of the electric furnace wall slag, but also the whole scraping work is completed by mechanical control. At the same time, the overall equipment has a simple structure and is easy to operate, which effectively reduces the failure rate of the equipment and is suitable for scraping the inner walls of electric furnaces with different inner diameters and depths.

[0020] The segmented setting of the center column and the setting of the reduction motor ensure that the center column and the scraper can be moved stably and accurately to the area of ​​the furnace wall where scraping work has not yet been carried out, and then carry out the next scraping of slag. This effectively reduces the unstable phenomenon such as swinging generated during the adjustment of the movement of the center column, further reducing the difficulty of operation.

[0021] The setting of the air pump and the air flow slot further improves the cleaning effect of the steel slag on the inner wall of the electric furnace. After the physical friction of the scraper arm cleans the large pieces of steel slag on a large scale, the air flow is used to clean the remaining steel slag again, which can ensure that the amount of steel slag remaining on the inner wall of the electric furnace after cleaning is greatly reduced, meeting the cleaning requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0023] Figure 1 It is a perspective view of the present invention;

[0024] Figure 2 It is a three-dimensional diagram of the center column and scraper of the present invention;

[0025] Figure 3 is a cross-sectional view of the center column and scraper of the present invention from a first perspective;

[0026] Figure 4 is a cross-sectional view of the center column and scraper disc of the present invention from a second perspective;

[0027] Figure 5 It is a three-dimensional diagram of the scraper of the present invention;

[0028] Figure 6 is a cross-sectional view of a scraper of the present invention;

[0029] Figure 7 is a cross-sectional view of the end portion of the scraper arm of the present invention;

[0030] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Center column; 2. Scraper; 3. Sealing cover; 4. Ventilation hood; 5. Heat dissipation rib; 6. Traction chain; 7. Hook plate; 8. Reducer motor; 9. Charging base; 10. Snap-in slot; 11. Storage slot; 12. Air pump; 13. Base plate; 14. Scraper arm; 15. Guide strip; 16. Transmission slot one; 17. Transmission slot two; 18. Concentrating plate; 19. Concentrating ring; 20. Ejector block; 21. Extrusion rod; 22. Airflow slot one; 23. Airflow slot two; 25. Spring; 26. Sealing plate; 27. One-way valve. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0032] Reference Figures 1 to 7 As shown, a furnace wall slag cleaning device of the present invention includes a central column 1, a scraper 2 is fixedly connected to the bottom of the central column 1, and the scraper 2 includes a plurality of scraper arms 14 extending outward. A traction chain 6 is installed on the top of the central column 1, and an air flow groove 22 is opened inside the scraper arm 14. The air flow groove 22 passes through the end of the scraper arm 14. The central column 1 is arranged in sections. A reduction motor 8 for driving the central column 1 in the lower section to rotate is fixedly connected to the central column 1 in the upper section. An air pump 12 for transmitting air to the air flow groove 22 is installed inside the central column 1.

[0033] During the smelting process of the electric furnace, a lot of steel slag will stick to the furnace wall. The refractory materials on the furnace wall need to be replaced every month. The slag in the furnace wall needs to be cleaned out before the refractory materials can be replaced. Therefore, when cleaning the old refractory materials, the steel slag on the furnace wall seriously affects the time of replacing the new refractory materials, which increases the smelting cost of the electric furnace.

[0034] In traditional slag cleaning work on electric furnace walls, due to the strong adhesion between the slag and the furnace wall, tools such as slag hammers and pneumatic hammers are generally used to knock the slag off the furnace wall. This method is simple and direct, but there are safety hazards. The operator needs to enter the high-temperature furnace and it is easy to generate a lot of dust.

[0035] Start the suspension device to lift the traction chain 6, control the center column 1 and scraper 2 to move upward, because at this time the center column 1 and scraper 2 are tightly attached to the wall of the electric furnace, and The center column 1 is made of metal and has a large volume. In the tilted state, it will provide a large horizontal component of force to the scraper 2, so that the scraper arm 14 can be tightly pressed against the electric furnace wall, so that the slag on the electric furnace wall can be effectively scraped off by the scraper arm 14 during the overall rising process of the device. The longer the scraper arm 14 extending outward is, the greater the tilt angle of the center column 1 is, and the greater the horizontal component of force will be. The longer scraper arm 14 is used to clean the slag with strong adhesion. When the scraper 2 moves to the top of the electric furnace, the center column 1 is controlled to move to other positions through the suspension equipment to scrape the slag on other parts. Through this arrangement, not only the strong and powerful scraping and cleaning of the slag on the electric furnace wall is achieved, but the whole scraping work is completed by mechanical control. At the same time, the overall equipment has a simple structure and is easy to operate, which effectively reduces the failure rate of the equipment and is suitable for scraping the inner walls of electric furnaces with different inner diameters and depths.

[0036] The scraper arm 14 is rotated to move the scraper plate 2 and the scraper plate 2 is rotated, so that the scraper plate 2 is rotated.

[0037] By setting the air pump 12 and the air flow slot 22, the end of the air flow slot 22 passes through the end of the scraper arm 14, which is exactly the position where the scraper arm 14 contacts the wall of the electric furnace; by the scraper arm 14 and the electric furnace wall, a large area of ​​slag can be removed, but the contact friction can easily produce a cleaning dead angle, which makes it difficult to clean some residues in place. The air pump 12 transmits high-pressure airflow to the air flow slot 22, and at the same time controls the suspension equipment to return to the upper side of the electric furnace so that the center column 1 is no longer tilted, and the steel slag on the electric furnace wall is sprayed and peeled off by the high-pressure airflow, and at the same time starts the reduction motor to drive the lower half of the center column 1 and the scraper 2 to rotate, so that the airflow ejected by multiple scraper arms 14 can It acts more evenly on the furnace wall. It should be noted that the cleaning area at this time is only the area of ​​the furnace wall where the scraper 2 is in contact. The center column 1 is controlled to move upward to allow the high-pressure airflow to clean from bottom to top. This cleaning process is carried out after the scraper arm 14 has cleaned. Since the center column 1 is heavy and the jetted airflow diffuses in all directions, the center column 1 will not be moved away from the furnace wall during the cleaning process. This arrangement further improves the cleaning effect of the slag on the inner wall of the furnace. After the physical friction of the scraper arm 14 cleans large pieces of slag on a large scale, the airflow is used to clean the remaining slag again. This ensures that the amount of slag remaining on the inner wall of the furnace after cleaning is greatly reduced, meeting the cleaning requirements.

[0038] The scraper 2 also includes a base plate 13, which is fixed to the bottom center of the center column 1, and multiple scraper arms 14 are arranged equidistantly in a ring on the outside of the base plate 13. When working, multiple scraper arms 14 are equidistantly arranged on the outside of the base plate 13, ensuring the symmetrical shape of the entire scraper 2, so that no matter how the center column 1 rotates, the scraper arms 14 can be ensured to fit with the electric furnace wall to complete the slag scraping work.

[0039] There are four traction chains 6, and a hook plate 7 is fixed between the tops of the four traction chains 6. The four traction chains 6 are distributed in a ring on the top surface of the central column 1. The top of the reduction motor 8 is fixed with a charging seat 9, and the charging seat 9 is located in the middle of the top surface of the central column 1. The outer side of the central column 1 is fixed with multiple heat dissipation ribs 5 near the top. When working, the setting of the four traction chains 6 can ensure that the central column 1 maintains a stable vertical state when it is suspended again. At the same time, during the movement of the central column 1, the four traction chains 6 are also It can maintain the center of gravity of the center column 1 and reduce the swing of the center column 1. Under the fixation of the four traction chains 6, the upper part of the center column 1 is also firmly restricted, so that the reduction motor 8 can stably drive the rotation process of the lower part of the center column 1. The reduction motor 8 is powered by the charging seat 9, and can also be made into a storage type. The wire connection is disconnected during operation. Since the reduction motor 8 fits the metal center column 1, heat can be directly transferred. By adding the heat dissipation ribs 5, the heat dissipation of the reduction motor 8 can be effectively increased.

[0040] A vertical slide groove is provided in the middle of the bottom surface of the base plate 13, and a vertically arranged extrusion rod 21 is slidably connected in the slide groove. The bottom of the extrusion rod 21 is made of elastic material. During operation, in the final stage of the scraping process of the center column 1, the scraper 2 will detach from the top of the electric furnace. In order to reduce the safety hazard caused by the center column 1 swinging outward significantly during detachment, an extrusion rod 21 is provided. When the center column 1 moves to the bottom of the electric furnace, the extrusion rod 21 will return to the slide groove under the action of extrusion. As the center column 1 rises, the extrusion rod 21 will extend outward under the action of gravity. When the center column 1 detaches from the top of the electric furnace, the extrusion rod 21 will contact the top edge of the electric furnace to prevent the center column 1 from swinging outward. At the same time, the bottom of the extrusion rod 21 is made of elastic material, which will deform when in contact with the electric furnace, thereby reducing damage to the electric furnace.

[0041] The scraper arm 14 is provided with an air flow groove 23 connected to the air pump 12 inside, and the end of the air flow groove 23 passes through the end of the scraper arm 14, and the air flow groove 23 is located above the air flow groove 1 22. The end of the air flow groove 23 is slidably connected with the ejection block 20. During operation, in the slag scraping process, it is easy for the steel slag to be too hard. If the central column 1 is controlled by the suspension equipment to hit the steel slag, not only is the operation more difficult, but the force is also difficult to control, causing damage to the electric furnace. Through the setting of the ejection block 20, the air pump 12 is provided with two air outlet ends, and the air pressure is quickly transmitted to the air flow groove 23 through one of the air outlet ends, and the output is stopped after a few seconds, thereby ejecting the ejection block 20 outward. At this time, the central column 1 still maintains the tilt The ejector block 20 is in an inclined state. In this way, when the ejector block 20 is ejected, the ejector block 20 close to the electric furnace wall will collide with the slag, generating a reaction force, thereby pushing the center column 1 outward, and then the center column 1 will collide with the slag under the action of gravity. At the same time, the ejector block 20 will be squeezed back into the air flow groove 23, waiting for the next ejection work. Through this setting, the effect of regulating the scraper arm 14 to repeatedly collide with the slag is achieved. At the same time, the ejector block 20 will also collide with the slag when ejecting, so that the slag with a larger adhesion force can be removed, and this method is simple to regulate. It only needs to control the output power of the air pump 12 to regulate the force of the center column hitting the slag; during the collision process, the inclination of the center column 1 can be appropriately reduced to ensure that the reaction force of the ejector block 20 can push the center column 1.

[0042] The interior of the central column 1 is provided with a transmission groove 16 and a transmission groove 2 17 which are connected to the output end of the air pump 12. The interior of the central column 1 is also provided with a centralizing disk 18 and a centralizing ring 19. The transmission groove 16 is connected to the centralizing disk 18, the transmission groove 2 17 is connected to the centralizing ring 19, a plurality of the air flow grooves 1 22 are connected to the centralizing disk 18, and a plurality of the air flow grooves 2 23 are connected to the centralizing ring 19. When working, after the air pump 12 outputs air pressure to the transmission groove 1 16 and the transmission groove 2 17, it will first come to the centralizing disk 18 and the centralizing ring 19, and then the air pressure will be evenly transported to the plurality of air flow grooves 1 22 and the air flow groove 2 23, completing the ejection of the ejection block 20 and the air flow injection of the air flow groove 2 23, and cleaning the steel slag.

[0043] The bottom of the scraper 2 is fixed with a guide bar 15, which is arranged in a spiral line shape. The centralizing plate 18 and the chute are connected to each other. During operation, as the slag is cleaned, more slag will accumulate at the bottom of the electric furnace. Generally, after the cleaning is completed, all the slag that falls on the bottom is taken out. However, in the middle of the cleaning, there will be too much slag at the bottom and the scraper 2 cannot sink to the bottom. During the downward movement of the scraper 2, the air pump 12 is started to transmit air pressure to the centralizing plate 18 through the transmission groove 2 17, and the air flow groove 2 The end outlet of 3 is narrow and the ejected air flow is limited. When the power of the air pump 12 is increased, part of the air flow will enter the chute. After the extrusion rod 21 is pushed out, a large amount of air flow will be ejected outward from the chute, thereby cleaning the bottom slag. At the same time, after the scraper 2 is pressed against the bottom of the furnace, the lower half of the central column 1 is rotated, and the guide bar 15 in the form of a spiral line can be used to transfer the slag at the bottom of the scraper 2 along the diffusion direction of the guide bar 15 to the outside of the scraper 2, thereby ensuring that the scraper 2 can sink to the bottom smoothly and clean the slag from the bottom.

[0044] The outer side of the center column 1 is provided with a storage groove 11 for placing the air pump 12, and a sealing cover 3 is installed on the outer side of the storage groove 11 to match the shape of the center column 1, and a ventilation hood 4 is installed on the surface of the sealing cover 3. The middle part of the center column 1 is provided with a clamping groove 10 for sliding and clamping the two sections of the center column 1. When working, the air pump 12 can be removed outward from the storage groove 11, which is convenient for replacement and maintenance. The overall center column 1 is made of solid metal. A counterweight groove is also provided inside the center column 1 to ensure that after the air pump 12 is installed, the center of gravity of the overall center column 1 is at its own geometric center. In order to maintain the integrity of the outer side of the center column 1, the sealing cover 3 obtains the air absorbed by the air pump 12 from the ventilation hood 4, which can also filter some steel slag debris. At the same time, since the center column 1 is in a tilted state when scraping the slag, the ventilation hood 4 will not be blocked. The clamping groove 10 is used to support the lower half of the center column 1 instead of letting the rotating shaft of the reduction motor 8 bear the weight.

[0045] The ejection block 20 includes a sealing plate 26, the end of which is fixedly connected to two round rods. The sealing plate 26 is slidably engaged with the second air flow groove 23, and the round rods penetrate to the outside of the scraper arm 14. During operation, when air pressure is injected into the second air flow groove 23, the sealing plate 26 will be squeezed and pushed to obtain power to move outward, thereby pushing the two round rods outward and hitting the slag through the round rods; the power generation of the ejection block 20 has an acceleration stage, which ensures that the ejection block 20 has greater kinetic energy when ejecting.

[0046] A spring 25 is fixedly connected between the sealing plate 26 and the air flow groove 1 22, and the ends of the air flow groove 1 22 and the air flow groove 2 23 are connected in one direction through a one-way valve 27. During operation, when the sealing plate 26 moves to the limit and fits the end of the air flow groove 2 23, the air flow groove 1 22 and the air flow groove 2 23 will be connected. Before this, the position where the two are connected is blocked by the sealing plate 26. When the ejection block 20 is completely ejected outward, the two are connected, allowing excess air pressure to be released from the end of the air flow groove 1 22, and then the ejection block 20 will return to its position under the action of the spring 25.

[0047] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A furnace wall slag cleaning device, characterized by: The invention comprises a central column (1), a scraper (2) is fixedly connected to the bottom of the central column (1), the scraper (2) comprises a plurality of scraper arms (14) extending outward, a traction chain (6) is installed on the top of the central column (1), an air flow groove (22) is provided inside the scraper arm (14), the air flow groove (22) is connected to the end of the scraper arm (14), the central column (1) is arranged in sections, a reduction motor (8) for driving the central column (1) in the lower section to rotate is fixedly connected to the central column (1) in the upper section, and an air pump (12) for transmitting air flow to the air flow groove (22) is installed inside the central column (1); The scraper arm (14) is provided with a second air flow groove (23) in communication with the air pump (12). The end of the second airflow groove (23) passes through the end of the scraper arm (14), and the second airflow groove (23) is located above the first airflow groove (22). The end of the second airflow groove (23) is slidably engaged with a ejection block (20).

2. A furnace wall slag cleaning device according to claim 1, characterized in that: The scraper (2) further comprises a base plate (13), wherein the base plate (13) is fixedly connected to the bottom center position of the central column (1), and a plurality of scraper arms (14) are arranged in an annular manner and at equal distances outside the base plate (13).

3. A furnace wall slag cleaning device according to claim 2, characterized in that: The number of the traction chains (6) is four, and a hook plate (7) is fixed between the tops of the four traction chains (6). The four traction chains (6) are distributed in a ring on the top surface of the central column (1). The top of the reduction motor (8) is fixed with a charging seat (9), and the charging seat (9) is located in the middle of the top surface of the central column (1). The outer side of the central column (1) is fixed with a plurality of heat dissipation ribs (5) close to the top.

4. A furnace wall slag cleaning device according to claim 3, characterized in that: A vertical chute is provided in the middle of the bottom surface of the base plate (13), and a vertically arranged extrusion rod (21) is slidably connected in the chute. The bottom of the extrusion rod (21) is made of elastic material.

5. The furnace wall slag cleaning device according to claim 1, characterized in that: The center column (1) is provided with a transmission groove 1 (16) and a transmission groove 2 (17) which are connected to the output end of the air pump (12). The center column (1) is also provided with a concentration disk (18) and a concentration ring (19). The transmission groove 1 (16) is connected to the concentration disk (18), the transmission groove 2 (17) is connected to the concentration ring (19), a plurality of the air flow grooves 1 (22) are connected to the concentration disk (18), and a plurality of the air flow grooves 2 (23) are connected to the concentration ring (19).

6. A furnace wall slag cleaning device according to claim 5, characterized in that: A guide bar (15) is fixedly connected to the bottom of the scraper disc (2), and the guide bar (15) is arranged in a spiral line form. The concentrating disc (18) and the chute are connected to each other.

7. The furnace wall slag cleaning device according to claim 6, characterized in that: A storage groove (11) for placing an air pump (12) is provided on the outside of the central column (1), a sealing cover (3) adapted to the shape of the central column (1) is installed on the outside of the storage groove (11), a ventilation cover (4) is installed on the surface of the sealing cover (3), and a clamping groove (10) for slidingly clamping two sections of the central column (1) is provided in the middle of the central column (1).

8. The furnace wall slag cleaning device according to claim 7, characterized in that: The ejection block (20) includes a sealing plate (26), the ends of which are fixedly connected to two round rods. The sealing plate (26) is slidably engaged with the second air flow groove (23), and the round rods extend through the outside of the scraper arm (14).

9. The furnace wall slag cleaning device according to claim 8, characterized in that: A spring (25) is fixedly connected between the sealing plate (26) and the air flow groove 1 (22), and the ends of the air flow groove 1 (22) and the air flow groove 2 (23) are in one-way communication via a one-way valve (27).

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