LF furnace pit steel slag cleaning system and method

Abstract

The invention provides an LF furnace pit steel slag cleaning system and method, and relates to the technical field of metallurgical equipment.The LF furnace pit steel slag cleaning system comprises a slag collecting basin and a transfer trolley, the slag collecting basin is placed in a furnace pit, a transfer assembly is installed on the transfer trolley, the transfer trolley moves on running rails through remote control, and the running rails are arranged on the left side and the right side of the furnace pit; and the transferring assembly is used for transferring the slag collecting basin. The slag collecting basin is placed below the LF furnace, so that the accumulated slag in the LF furnace pit is collected, the transfer assembly is installed on the transfer trolley, the slag collecting basin is rapidly replaced, an operator remotely operates outside the furnace pit to carry out planned cleaning on the accumulated slag in the furnace pit, and it is not needed that the accumulated slag in the furnace pit is manually cleaned after smelting of the LF furnace is stopped; and the waiting time of blowing-out and slag removal of the LF furnace is eliminated, the smelting time of the LF furnace can be prolonged by 1 hour every day, the production is improved, the efficiency is improved, meanwhile, personnel are prevented from entering the severe environment of the furnace pit to carry out slag removal operation, and potential safety hazards of the personnel in the slag removal process are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical equipment, and in particular to a LF furnace pit slag cleaning system and method. Background Art

[0002] The production operation of the steelmaking LF furnace basically produces a furnace of molten steel in about 30 minutes depending on the type of steel being produced. During smelting, molten steel is prone to splashing, and slag adheres to the furnace cover or falls into the furnace pit. If the furnace pit is not cleaned in time, the ladle car will be unable to move. In order to ensure the safe operation of the ladle car under the furnace, manual slag cleaning is arranged according to the amount of slag accumulated in the furnace pit. Each slag cleaning time takes 3 hours. When cleaning the slag under the furnace, smelting must be stopped to ensure the safety of the slag cleaning operation.

[0003] The existing furnace pit slag cleaning method requires the furnace to be stopped at regular intervals to manually clean the slag under the furnace, resulting in a waste of LF furnace smelting time. In addition, the slag cleaning operation environment under the furnace is poor, affecting the safety of the slag cleaning process. Summary of the invention

[0004] The present invention provides a LF furnace pit slag cleaning system and method, which are used to solve the defects in the prior art that manual slag cleaning is required after the furnace is stopped, resulting in a waste of LF furnace smelting time, and the slag cleaning operation environment under the furnace is poor, affecting the safety of the slag cleaning process.

[0005] On the one hand, the present invention provides a LF furnace pit slag cleaning system, comprising: a slag collecting basin and a transfer vehicle, the slag collecting basin is placed inside the furnace pit, a transfer assembly is installed on the transfer vehicle, the transfer vehicle moves on a running track by remote control, the running track is arranged on the left and right sides of the furnace pit, and the transfer assembly is used to transfer the slag collecting basin.

[0006] Preferably, a lifting frame is fixedly connected to the side wall of the slag collecting basin, and the slag collecting basin is made by bending a 20 mm steel plate.

[0007] Preferably, a mounting seat is fixedly connected to the upper surface of the transfer vehicle, a plurality of positioning pins are fixedly connected to the upper surface of the mounting seat, the transfer assembly includes a control box, support frames are fixedly connected to the left and right sides of the control box, a plurality of positioning holes corresponding to the positioning pins are arranged on the lower surface of the support frame, two groups of moving tracks arranged along the front-rear direction are symmetrically fixedly connected to the lower surface of the control box, and two groups of lifting components are movably arranged on each moving track.

[0008] Preferably, a bidirectional motor is fixedly connected to the middle of the motion track, two output ends of the bidirectional motor are respectively fixedly connected to a threaded rod, and two sets of lifting components are respectively arranged on the two threaded rods.

[0009] Preferably, the lifting assembly includes a threaded block, which is threadedly connected to the threaded rod. A vertically arranged cylinder is fixedly connected to the lower surface of the threaded block, and the cylinder is connected to an external air source. An output end of the cylinder is fixedly connected to an output rod, and a lower end of the output rod is fixedly connected to a hook.

[0010] Preferably, two groups of auxiliary support components symmetrically arranged front and back are arranged in the control box, and the auxiliary support components include a conical block 1, which is slidably connected to the bottom surface of the control box along the front-back direction, and a spring 1 is fixedly connected between the conical block 1 and the inner wall of the control box. The conical block 1 is controlled by the trigger component to slide on the bottom surface of the control box. An inclined plane 1 is arranged on the conical block 1, and the horizontal distance between the upper end of the inclined plane 1 and the inner wall of the control box is smaller than the horizontal distance between the lower end of the inclined plane 1 and the inner wall of the control box. The lower surface of the conical block is fixedly connected to A support plate is connected, and the support plate slides in a sliding groove 1 along the front-back direction. The sliding groove 1 is set on the lower bottom surface of the control box. An adjustment groove along the vertical direction is set on the side wall of the support plate. A vertically set center rod is fixedly connected in the adjustment groove. A support block is slidably connected to the center rod along the up and down directions. A spring 2 is fixedly connected between the lower surface of the support block and the bottom surface of the adjustment groove. A slope 2 is set on the support block. The horizontal distance between the upper end of the slope 2 and the inner wall of the adjustment groove is smaller than the horizontal distance between the lower end of the slope 2 and the inner wall of the adjustment groove.

[0011] Preferably, the trigger assembly includes a control frame, which includes a horizontal rod arranged along the left-right direction and a vertical rod fixedly connected to the left and right ends of the horizontal rod respectively, the vertical rod slides along the up and down directions to penetrate the lower side wall of the control box, the lower side surface of the horizontal rod contacts the inclined surface one, the lower end of the vertical rod is fixedly connected with a contact plate, and a spring three is fixedly connected between the contact plate and the lower bottom surface of the control box.

[0012] Preferably, the trigger assembly also includes a mounting bracket, which is fixedly connected to the inner top surface of the control box, and a rotating wheel is rotatably connected to the mounting bracket. A connecting rope is fixedly connected to the upper side wall of the horizontal rod, and the other end of the connecting rope is fixedly connected to the upper surface of the leak-proof wall after passing around the rotating wheel. A plurality of limiting holes are provided on the left and right side walls of the leak-proof wall, and a positioning rod is slidably connected in each limiting hole, and the positioning rod is fixedly connected to the inner top surface of the control box, and a spring four is fixedly connected between the upper surface of the leak-proof wall and the inner top surface of the control box.

[0013] On the other hand, the present invention also provides a LF furnace pit slag cleaning method, which is applied to the above-mentioned LF furnace pit slag cleaning system, comprising: Step 1: Lift the transfer assembly above the transfer vehicle, align the positioning pins and positioning holes, install the transfer assembly on the transfer vehicle, and connect the cylinder to the external air source; Step 2: Controlled by the operating box outside the furnace pit, the transfer vehicle moves on the running track to above the furnace pit; Step 3: Control the hook to move below the lifting frame; Step 4: The cylinder controls the output rod to rise, so that the hook lifts the slag collecting basin from the furnace pit; Step 5: After confirming that the slag collecting basin has been raised to the specified height, control the transfer vehicle to drive away from the furnace pit to the outer lifting channel; Step 6: Put down the slag collecting basin, drive the transfer vehicle away from the slag collecting basin, lift the slag collecting basin filled with steel slag and replace it with a new one; Step 7: Place the new slag collecting basin into the furnace pit.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes the collection of slag accumulated in the LF furnace pit by placing a slag collecting basin under the furnace, and installs a transfer component on the transfer vehicle to realize the rapid replacement of the slag collecting basin. The operating personnel can remotely operate outside the furnace pit to carry out planned cleaning of the slag accumulated in the furnace pit, and there is no need to manually clean the slag accumulated in the furnace pit after the LF furnace stops smelting, thereby eliminating the waiting time for cleaning the slag when the LF furnace is stopped. The smelting time of the LF furnace can be increased by 1 hour per day, thereby achieving increased production and creating benefits, and at the same time avoiding personnel from entering the harsh environment of the furnace pit to perform slag cleaning operations, thereby reducing the safety hazards of personnel during the slag cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the transfer vehicle of the present invention; Figure 3 It is a schematic structural diagram of the motion track of the present invention; Figure 4 It is a structural schematic diagram of the auxiliary support assembly of the present invention.

[0017] Reference numerals: 1. Slag collecting basin; 2. Transfer car; 3. Running track; 4. Lifting frame; 5. Mounting seat; 6. Locating pin; 7. Control box; 8. Locating hole; 9. Motion track; 10. Bidirectional motor; 11. Threaded rod; 12. Threaded block; 13. Cylinder; 14. Output rod; 15. Hook; 16. Support frame; 17. Conical block one; 18. Spring one; 19. Inclined surface one; 20. Support plate; 21. Sliding groove one; 22. Adjusting groove; 23. Center rod; 24. Support block; 25. Spring two; 26. Inclined surface two; 27. Control frame; 271. Horizontal rod; 272. Vertical rod; 28. Contact plate; 29. ​​Spring three; 30. Mounting frame; 31. Rotating wheel; 32. Connecting rope; 33. Leak-proof wall; 34. Limiting hole; 35. Locating rod; 36. Spring four. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] Example 1 An embodiment of the present invention provides a LF furnace pit slag cleaning system, comprising: a slag collecting basin 1 and a transfer vehicle 2, the slag collecting basin 1 is placed inside the furnace pit, a transfer assembly is installed on the transfer vehicle 2, the transfer vehicle 2 moves on a running track 3 by remote control, the running track 3 is arranged on the left and right sides of the furnace pit, and the transfer assembly is used to transfer the slag collecting basin 1.

[0021] Preferably, a lifting frame 4 is fixedly connected to the side wall of the slag collecting basin 1, and the slag collecting basin 1 is made by bending a 20 mm steel plate.

[0022] Preferably, a mounting seat 5 is fixedly connected to the upper surface of the transfer vehicle 2, a plurality of positioning pins 6 are fixedly connected to the upper surface of the mounting seat 5, the transfer component includes a control box 7, a support frame 16 is fixedly connected to the left and right sides of the control box 7, a plurality of positioning holes 8 corresponding to the positioning pins 6 are arranged on the lower surface of the support frame 16, two groups of moving tracks 9 arranged along the front-to-back direction are symmetrically fixedly connected to the lower surface of the control box 7, and two groups of lifting components are movably arranged on each moving track 9.

[0023] Preferably, a bidirectional motor 10 is fixedly connected to the middle of the moving track 9 , two output ends of the bidirectional motor 10 are respectively fixedly connected to a threaded rod 11 , and two sets of lifting components are respectively arranged on the two threaded rods 11 .

[0024] Preferably, the lifting assembly includes a threaded block 12, which is threadedly connected to the threaded rod 11, and a vertically arranged cylinder 13 is fixedly connected to the lower surface of the threaded block 12, and the cylinder 13 is connected to an external air source, and an output end of the cylinder 13 is fixedly connected to an output rod 14, and the lower end of the output rod 14 is fixedly connected to a hook 15.

[0025] The beneficial effects of the above technical solution are: During the production operation of the steelmaking LF furnace, the slag generated by the splashing of molten steel will fall into the slag collecting basin 1. When the slag in the slag collecting basin 1 accumulates to a certain level, when the ladle is lifted out of the smelting station to another station for smelting, the operator directs the crane to lift the transfer assembly to the top of the transfer vehicle 2. After aligning the positioning pin 6 and the positioning hole 8, the crane descends to install the transfer assembly on the transfer vehicle 2, and connects the cylinder 13 with the external air source through a metal hose. After that, the transfer vehicle 2 is controlled by the operating box outside the furnace pit, and the transfer vehicle 2 moves to the top of the furnace pit on the running track 3, and the two groups of lifting components on the same moving track 9 are controlled to move away from each other until the lifting components leave the top of the slag collecting basin 1, and the output rod 14 is controlled to descend by the cylinder 13 to make the lifting assembly The height of hook 15 is lower than that of lifting frame 4, and then the two groups of lifting components are controlled to approach each other, so that hook 15 moves to the bottom of lifting frame 4, and the output rod 14 is controlled to rise by cylinder 13, so that hook 15 lifts the slag collecting basin 1 from the furnace pit, and after confirming that the slag collecting basin 1 has risen to the specified high position, the transfer vehicle 2 is controlled to drive away from the top of the furnace pit to the outer lifting channel, and the cylinder 13 is driven to put down the slag collecting basin 1, and the transfer vehicle 2 is driven away from the top of the slag collecting basin 1, and the driving crane is directed to lift the slag collecting basin 1 filled with slag and replace it with a new slag collecting basin 1, and the transfer vehicle 2 is driven to the top of the new slag collecting basin 1, and the cylinder 13 is driven to lift the slag collecting basin 1 and then move the transfer vehicle 2 to the top of the furnace pit, and after putting down the new slag collecting basin 1, the transfer vehicle 2 is driven away to complete the entire slag cleaning process.

[0026] The slag is collected by the slag collecting basin 1, which reduces the wear of the mechanical cleaning device. Different slag collecting basins 1 can be manufactured according to furnace pits of different sizes and shapes, thereby achieving adaptability to a variety of furnace pits, and the slag is cleaned by replacing the slag collecting basin 1. The cleaning process is not affected by the physical properties of the slag and the compactness of the stacking, thereby ensuring the stability of the cleaning efficiency and the coordination of the positioning pins 6 and the positioning holes 8, thereby ensuring the accuracy of the connection position of the transfer assembly and the transfer vehicle 2 and the stability of the connection. Through the setting of the motion track 9, the lifting assembly has the ability to move in the front and rear directions, which facilitates the extension of the hook 15 under the lifting frame 4. There is no need to control the movement of the transfer vehicle 2. The movement of the two groups of lifting assemblies is simultaneously controlled by the bidirectional motor 10, thereby ensuring the symmetry of the positions of the two groups of lifting assemblies, thereby improving the stability of the lifting of the slag collecting basin 1 and improving the safety when lifting the slag collecting basin 1.

[0027] Example 2 On the basis of Example 1, two groups of auxiliary support components symmetrically arranged front and back are provided in the control box 7, and the auxiliary support components include a conical block 17, which is slidably connected to the inner bottom surface of the control box 7 along the front-back direction, and a spring 18 is fixedly connected between the conical block 17 and the inner wall of the control box 7. The conical block 17 is controlled by the trigger assembly to slide on the inner bottom surface of the control box 7, and an inclined surface 19 is provided on the conical block 17. The horizontal distance between the upper end of the inclined surface 19 and the inner wall of the control box 7 is smaller than the horizontal distance between the lower end of the inclined surface 19 and the inner wall of the control box 7. The lower surface of the conical block 17 is fixedly connected with a support The support plate 20 slides in the sliding groove 21 along the front-to-back direction, and the sliding groove 21 is arranged on the lower bottom surface of the control box 7. An adjusting groove 22 along the vertical direction is arranged on the side wall of the support plate 20. A vertically arranged center rod 23 is fixedly connected in the adjusting groove 22. A support block 24 is slidably connected to the center rod 23 along the up-down direction. A spring 25 is fixedly connected between the lower surface of the support block 24 and the inner bottom surface of the adjusting groove 22. A slope 26 is arranged on the support block 24. The horizontal distance between the upper end of the slope 26 and the inner side wall of the adjusting groove 22 is smaller than the horizontal distance between the lower end of the slope 26 and the inner side wall of the adjusting groove 22.

[0028] Preferably, the trigger assembly includes a control frame 27, which includes a horizontal rod 271 arranged along the left-right direction and a vertical rod 272 fixedly connected to the left and right ends of the horizontal rod 271, respectively. The vertical rod 272 slides along the up and down directions to penetrate the lower side wall of the control box 7, and the lower side surface of the horizontal rod 271 contacts the inclined surface 19. The lower end of the vertical rod 272 is fixedly connected to a contact plate 28, and a spring 29 is fixedly connected between the contact plate 28 and the lower bottom surface of the control box 7.

[0029] The beneficial effects of the above technical solution are: When the slag collecting basin 1 is raised to a certain height, the lifting frame 4 will contact with the contact plate 28. As the slag collecting basin 1 is further lifted, the vertical rod 272 is pushed upward, so that the horizontal rod 271 moves upward. After the squeezing effect of the horizontal rod 271 is lost, the conical block 17 slides away from the inner wall of the control box 7 under the action of the spring 18, so that the support plate 20 moves toward the slag collecting basin 1. During this process, the lifting frame 4 contacts with the inclined surface 26, so that the support block 24 compresses the spring 25 downward. When the slag collecting basin 1 is lifted to the final height, the lifting frame 4 contacts with the horizontal part of the upper surface of the support block 24, thereby auxiliary support is provided to the slag collecting basin 1 through the support block 24, and the hoisting stability of the slag collecting basin 1 is further improved. When the slag collecting basin 1 is released, as the output rod 14 descends, under the action of gravity of the slag collecting basin 1, the support block 24 moves downward, and the vertical rod 272 is released downward, so that the support plate 20 moves away from the slag collecting basin 1, thereby making the support block 24 leave the bottom of the lifting frame 4, ensuring that the support block 24 will not affect the normal release of the slag collecting basin 1. The device is automatically triggered by the lifting and lowering of the slag collecting basin 1, without the need for additional power or manual control, thereby reducing the energy demand of the slag removal process and being easy to operate.

[0030] Example 3 On the basis of Example 2, the trigger assembly also includes a mounting frame 30, which is fixedly connected to the inner top surface of the control box 7, and a rotating wheel 31 is rotatably connected to the mounting frame 30. A connecting rope 32 is fixedly connected to the upper side wall of the horizontal rod 271, and the other end of the connecting rope 32 is fixedly connected to the upper surface of the leak-proof wall 33 after passing around the rotating wheel 31. A plurality of limiting holes 34 are provided on the left and right side walls of the leak-proof wall 33, and a positioning rod 35 is slidably connected in each limiting hole 34. The positioning rod 35 is fixedly connected to the inner top surface of the control box 7, and a spring 36 is fixedly connected between the upper surface of the leak-proof wall 33 and the inner top surface of the control box 7.

[0031] The beneficial effects of the above technical solution are: When the horizontal rod 271 moves upward, the connecting rope 32 is released, and thus under the action of spring four 36, the leak-proof wall 33 moves downward until it contacts the upper surface of the slag collecting basin 1, thereby realizing the function of preventing the slag from leaking during transportation. Through the action of spring four 36, the tightness of the connection between the leak-proof wall 33 and the upper surface of the slag collecting basin 1 is ensured, thereby improving the leak-proof function of the leak-proof wall 33.

[0032] Example 4 The embodiment of the present invention discloses a LF furnace pit slag cleaning method, which is applied to a LF furnace pit slag cleaning system as described in any one of embodiments 1-3, comprising: Step 1: hoist the transfer assembly above the transfer vehicle 2, align the positioning pin 6 with the positioning hole 8, install the transfer assembly on the transfer vehicle 2, and connect the cylinder 13 to the external air source; Step 2: Controlled by the operating box outside the furnace pit, the transfer vehicle 2 moves on the running track 3 to above the furnace pit; Step 3: Control the hook 15 to move below the lifting frame 4; Step 4: The output rod 14 is controlled to rise by the cylinder 13, so that the hook 15 lifts the slag collecting basin 1 from the furnace pit; Step 5: After confirming that the slag collecting basin 1 has been raised to the specified height, the transfer vehicle 2 is controlled to move away from the furnace pit to the outer lifting channel; Step 6: Put down the slag collecting basin 1, drive the transfer vehicle 2 away from the top of the slag collecting basin, lift the slag collecting basin 1 filled with steel slag and replace it with a new slag collecting basin 1; Step 7: Place the new slag collecting basin 1 into the furnace pit.

[0033] The beneficial effects of the above technical solution are: The present invention realizes the collection of LF furnace pit slag by placing a slag collecting basin 1 under the furnace, and installs a transfer component on the transfer vehicle 2 to realize the rapid replacement of the slag collecting basin 1. The operating personnel can remotely operate outside the furnace pit to carry out planned cleaning of the furnace pit slag, and there is no need to manually clean the furnace pit slag after the LF furnace stops smelting, thereby eliminating the waiting time for LF furnace shutdown and slag cleaning, and the smelting time of the LF furnace can be increased by 1 hour per day, thereby achieving production improvement and creating benefits. At the same time, it is avoided that personnel enter the harsh environment of the furnace pit to perform slag cleaning operations, and the safety hazards of the personnel during the slag cleaning process are reduced.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A LF furnace pit slag cleaning system, characterized in that: include: A slag collecting basin (1) and a transfer vehicle (2), wherein the slag collecting basin (1) is placed inside a furnace pit, and a transfer component is installed on the transfer vehicle (2). The transfer vehicle (2) moves on a running track (3) through remote control, and the running track (3) is arranged on the left and right sides of the furnace pit. The transfer component is used to transfer the slag collecting basin (1).

2. The LF furnace pit slag cleaning system according to claim 1, characterized in that: The side wall of the slag collecting basin (1) is fixedly connected with a lifting frame (4), and the slag collecting basin (1) is made by bending a 20 mm steel plate.

3. The LF furnace pit slag cleaning system according to claim 1, characterized in that: The upper surface of the transfer vehicle (2) is fixedly connected to a mounting seat (5), and the upper surface of the mounting seat (5) is fixedly connected to a plurality of positioning pins (6). The transfer component comprises a control box (7), and the left and right sides of the control box (7) are fixedly connected to support frames (16), and the lower surface of the support frame (16) is provided with a plurality of positioning holes (8) arranged corresponding to the positioning pins (6). The lower surface of the control box (7) is symmetrically fixedly connected to two groups of moving tracks (9) arranged in the front-rear direction, and each moving track (9) is movably provided with two groups of lifting components.

4. The LF furnace pit slag cleaning system according to claim 3, characterized in that: A bidirectional motor (10) is fixedly connected to the middle of the motion track (9), two output ends of the bidirectional motor (10) are respectively fixedly connected to a threaded rod (11), and two sets of lifting components are respectively arranged on the two threaded rods (11).

5. The LF furnace pit slag cleaning system according to claim 4, characterized in that: The lifting assembly comprises a threaded block (12), the threaded block (12) is threadedly connected to a threaded rod (11), a vertically arranged cylinder (13) is fixedly connected to the lower surface of the threaded block (12), the cylinder (13) is connected to an external air source, an output end of the cylinder (13) is fixedly connected to an output rod (14), and a hook (15) is fixedly connected to the lower end of the output rod (14).

6. The LF furnace pit slag cleaning system according to claim 3, characterized in that: The control box (7) is provided with two groups of auxiliary support components symmetrically arranged in front and back directions, the auxiliary support components comprising a conical block (17), the conical block (17) is slidably connected to the inner bottom surface of the control box (7) along the front and back directions, a spring (18) is fixedly connected between the conical block (17) and the inner side wall of the control box (7), the conical block (17) is controlled by the trigger component to slide on the inner bottom surface of the control box (7), an inclined surface (19) is provided on the conical block (17), the horizontal distance between the upper end of the inclined surface (19) and the inner side wall of the control box (7) is smaller than the horizontal distance between the lower end of the inclined surface (19) and the inner side wall of the control box (7), the lower surface of the conical block (17) is fixedly connected to a support plate (20), the support The plate (20) slides in the sliding groove (21) along the front-back direction. The sliding groove (21) is arranged on the lower bottom surface of the control box (7). The side wall of the support plate (20) is provided with an adjustment groove (22) along the vertical direction. A vertically arranged center rod (23) is fixedly connected in the adjustment groove (22). A support block (24) is slidably connected to the center rod (23) along the up-down direction. A spring (25) is fixedly connected between the lower surface of the support block (24) and the inner bottom surface of the adjustment groove (22). A second inclined surface (26) is arranged on the support block (24). The horizontal distance between the upper end of the second inclined surface (26) and the inner side wall of the adjustment groove (22) is smaller than the horizontal distance between the lower end of the second inclined surface (26) and the inner side wall of the adjustment groove (22).

7. The LF furnace pit slag cleaning system according to claim 6, characterized in that: The trigger assembly comprises a control frame (27), the control frame (27) comprises a horizontal rod (271) arranged in the left-right direction and vertical rods (272) respectively fixedly connected to the left and right ends of the horizontal rod (271), the vertical rod (272) slides in the up-down direction to penetrate the lower side wall of the control box (7), the lower side surface of the horizontal rod (271) contacts the inclined surface 1 (19), the lower end of the vertical rod (272) is fixedly connected to a contact plate (28), and a spring 3 (29) is fixedly connected between the contact plate (28) and the lower bottom surface of the control box (7).

8. The LF furnace pit slag cleaning system according to claim 7, characterized in that: The trigger assembly also includes a mounting frame (30), the mounting frame (30) is fixedly connected to the inner top surface of the control box (7), a rotating wheel (31) is rotatably connected to the mounting frame (30), a connecting rope (32) is fixedly connected to the upper side wall of the horizontal rod (271), the other end of the connecting rope (32) is fixedly connected to the upper surface of the leakproof wall (33) after passing around the rotating wheel (31), a plurality of limiting holes (34) are arranged on the left and right side walls of the leakproof wall (33), a positioning rod (35) is slidably connected in each limiting hole (34), the positioning rod (35) is fixedly connected to the inner top surface of the control box (7), and a spring four (36) is fixedly connected between the upper surface of the leakproof wall (33) and the inner top surface of the control box (7).

9. A LF furnace pit slag cleaning method, applied to a LF furnace pit slag cleaning system as claimed in any one of claims 1 to 8, characterized in that: include: Step 1: hoist the transfer assembly above the transfer vehicle (2), align the positioning pin (6) and the positioning hole (8), install the transfer assembly on the transfer vehicle (2), and connect the cylinder (13) to the external air source; Step 2: Controlled by an operating box outside the furnace pit, the transfer vehicle (2) moves on the running track (3) to above the furnace pit; Step 3: Control the hook (15) to move below the lifting frame (4); Step 4: The output rod (14) is controlled to rise by the cylinder (13), so that the hook (15) lifts the slag collecting basin (1) from the furnace pit; Step 5: After confirming that the slag collecting basin (1) has been raised to a specified height, the transfer vehicle (2) is controlled to move away from the furnace pit to the outer lifting channel; Step 6: lower the slag collecting basin (1), drive the transfer vehicle (2) away from the slag collecting basin, lift the slag collecting basin (1) filled with steel slag and replace it with a new slag collecting basin (1); Step 7: Place the new slag collecting basin (1) into the furnace pit.

Images