Top slag cleaning device of VD furnace

Abstract

The utility model relates to the field of steel smelting slag cleaning devices, in particular to a top slag cleaning device of a VD (vacuum degassing) furnace, which comprises a guide component. The grabbing assembly is arranged on the guide assembly; the transfer trolley is arranged below the guide assembly, and the transfer trolley comprises a first placement notch, a second placement notch and a transfer slide way; the transfer assembly is arranged on the transfer slide way and comprises a transfer support, a transfer hopper, an auxiliary slag pushing part and a discharging part, a transfer seat is arranged at the bottom of the transfer support, the transfer support is arranged in the transfer slide way in a sliding mode through the transfer seat, the transfer hopper is arranged on the transfer support, and the auxiliary slag pushing part is arranged in the transfer hopper; a discharging opening is formed in one end of the transfer hopper, and the discharging piece is arranged at the discharging opening. And a positioning assembly. The grabbing assembly is used for mechanically salvaging slag, the transferring assembly is used for transporting and discharging slag, workers are prevented from getting close to the VD furnace, the working environment of the workers is improved, the safety of the workers is improved, meanwhile, the slag salvaging efficiency is improved, and production is rapidly recovered.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel smelting slag removing device, especially a top slag cleaning device of VD furnace. BACKGROUND

[0002] VD (Vacuum Decarburization) refining method, is the initial refining liquid steel in the electric furnace, converter is placed in the VD furnace closed vacuum, while the ladle bottom argon blowing stirring a kind of liquid steel vacuum treatment method, VD furnace is vacuum degassing furnace.

[0003] Among them, liquid steel is melted in electric furnace, converter and is preliminarily blown in VD furnace, and hydrogen and nitrogen in steel are removed by bottom argon blowing stirring to obtain pure liquid steel.When the liquid steel in the VD furnace appears abnormal condition, the liquid steel will produce a large amount of refining slag, and the refining slag will accumulate at the furnace mouth of the VD furnace, when the refining slag accumulates reaches a certain amount, and under the condition of vacuum argon blowing stirring liquid steel, argon blowing stirring will indirectly cause the overflow of refining slag from the VD furnace, increase the risk of on-site personnel, therefore, on-site personnel need to stop VD refining process, and clean the refining slag at the furnace mouth in the VD furnace in time.

[0004] The existing slag cleaning method is mostly manual cleaning, and the slag salvaging personnel need to be close to the furnace mouth of the VD furnace at high place, and then use special slag salvaging tool, the disadvantage is that the working condition temperature of the slag salvaging personnel is high, greatly affects the health of the operator, and the manual slag salvaging efficiency is low, and production cannot be resumed in time. INVENTION CONTENTS

[0005] The utility model provides a kind of top slag cleaning device of VD furnace, it uses grabbing subassembly mechanical salvaging, uses transport subassembly and removes slag and removes slag, simultaneously through positioning component auxiliary positioning, so that salvaging work is accurate and stable, simultaneously avoid staff close to VD furnace, improve the working environment of personnel, improve the security of personnel, simultaneously improve the salvaging efficiency, and quickly resume production.

[0006] To achieve the above object, the utility model provides a kind of top slag cleaning device of VD furnace, it is characterized in that, including:

[0007] Guiding component, the guiding component includes support rod, support frame and guide rail, the support frame two ends are respectively provided with the support rod, and the guide rail is arranged on the support frame;

[0008] Grabbing subassembly, the grabbing subassembly includes moving part and refining slag grab bucket, the moving part is slidably arranged on the guide rail, and the refining slag grab bucket is arranged on the moving part,

[0009] A transfer trolley is arranged below the support frame, and the transfer trolley comprises a first placing notch for placing a VD furnace, a second placing notch for placing a slag ladle, and a transfer slide, one end of the transfer trolley is provided with the first placing notch, the other end of the transfer trolley is provided with the second placing notch, and the transfer slide is arranged in parallel between the first placing notch and the second placing notch.

[0010] A transfer assembly is arranged on the transfer slide, and the transfer assembly comprises a transfer support, a transfer bucket, an auxiliary slag pushing member, and a discharging member, the bottom of the transfer support is provided with a transfer seat, the transfer support is slidingly arranged in the transfer slide through the transfer seat, the transfer bucket is arranged on the transfer support, the auxiliary slag pushing member is arranged in the transfer bucket, one end of the transfer bucket is provided with a discharging opening, and the discharging member is arranged at the discharging opening.

[0011] A positioning assembly is arranged, and the positioning assembly comprises a first positioning member, a second positioning member, a third positioning member, and a fourth positioning member, the first positioning member is arranged on the moving part, the second positioning member is arranged on the support rod, the third positioning member is arranged on both sides of the horizontal center of the first placing notch, and the fourth positioning member is arranged on the two side walls of the transfer trolley.

[0012] Further, the moving part adopts an electric hoist, and the moving part is provided with a groove wheel which cooperates with the guide rail.

[0013] Further, the top slag cleaning device of the VD furnace further comprises a heat insulation shell, the heat insulation shell is sleeved on the refining slag grab bucket, and a heat dissipation fan is arranged on the outer side wall of the heat insulation shell.

[0014] Further, the top slag cleaning device of the VD furnace further comprises a pushing hydraulic cylinder, the pushing hydraulic cylinder is arranged on both outer sides of the transfer slide close to the second placing notch, a sliding block is arranged on the transfer seat, the sliding block cooperates with the transfer slide, and the output end of the pushing hydraulic cylinder is fixedly connected with one end of the transfer seat.

[0015] Further, the auxiliary pushing member comprises a pushing roller, a first driven gear, a fourth driven gear, a driving gear, and a driving motor, the pushing roller is arranged in the transfer bucket in a penetrating manner, the pushing roller is close to the discharging opening, one end of the pushing roller is provided with the first driven gear, the other end of the pushing roller is provided with the fourth driven gear, the driving motor is arranged on the transfer support, the output end of the driving motor is provided with the driving gear, the driving gear is close to the fourth driven gear, the driving gear and the fourth driven gear are in transmission through a chain, and a plurality of material distributing blades are arranged on the pushing roller.

[0016] Further, the blanking piece comprises an output cylinder and a blanking door, one end of the blanking door is hinged to the blanking port, and the output cylinder is arranged on the side wall of the transfer bucket close to the blanking port, and the output end of the output cylinder is hinged to the blanking door.

[0017] Further, the top slag cleaning device of the VD furnace further comprises a slag crushing assembly, the slag crushing roller is arranged in the transfer bucket, the slag crushing roller is arranged on one side of the pushing roller away from the blanking port, one end of the slag crushing roller is provided with a second driven gear, and the second driven gear is connected with the first driven gear through a chain.

[0018] Further, the top slag cleaning device of the VD furnace further comprises a limiting assembly, the limiting roller is arranged in the transfer bucket, the limiting roller is arranged below the slag crushing roller, one end of the limiting roller is provided with a third driven gear, and the third driven gear is connected with the first driven gear and the second driven gear through a chain.

[0019] Compared with the prior art, the top slag cleaning device of the VD furnace according to the embodiment of the utility model realizes mechanized slag salvaging through the arrangement of the guiding assembly and the grabbing assembly, avoids manual slag salvaging, reduces the danger of the on-site personnel, and simultaneously realizes automatic slag discharging through the arrangement of the transfer chute and the transfer assembly on the transfer trolley of the transfer VD furnace, wherein the transfer assembly comprises a transfer support, a transfer bucket, an auxiliary pushing slag piece and a blanking piece, the transfer bucket carries the grabbed refining slag, the transfer bucket after loading is moved to the slag tank through the cooperation of the transfer support and the transfer chute, the auxiliary pushing slag piece in the transfer bucket continuously pushes the refining slag in the transfer bucket, the blanking piece opens the blanking port of the transfer bucket, the refining slag is pushed out into the slag tank through the auxiliary pushing slag piece, the positioning assembly is used for positioning whether the transfer trolley reaches the position and whether the grabbing assembly is located above the furnace port, accurate positioning between the assemblies is realized, the slag salvaging work is mechanized, direct slag salvaging operation of the personnel is avoided, and the safety of the personnel is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an overall structure schematic view of the top slag cleaning device of the VD furnace.

[0021] Figure 2 It is a first view structure schematic view of the transfer trolley of the top slag cleaning device of the VD furnace.

[0022] Figure 3A second visual angle structure schematic diagram of a transfer trolley of a top slag cleaning device of a VD furnace of the utility model shows;

[0023] Figure 4 A third visual angle structure schematic diagram of a transfer trolley of a top slag cleaning device of a VD furnace of the utility model shows;

[0024] Figure 5 For Figure 4 A local enlarged view of the A area in the middle shows;And

[0025] Figure 6 A transmission mode structure schematic diagram between a first driven gear, a second driven gear and a third driven gear of a top slag cleaning device of a VD furnace of the utility model shows.

[0026] Reference signs:

[0027] 1100. support rod;1200. support frame;1300. guide rail;

[0028] 2100. moving part;2200. refining slag grab bucket;2300. heat insulation shell;2310. heat dissipation fan;

[0029] 3000. transfer trolley;3100. transfer slide;3200. first placing notch;3300. second placing notch;

[0030] 4000. transfer assembly;4100. transfer support;4110. transfer seat;4200. transfer bucket;4210. discharge port;4220. sliding groove;4300. auxiliary pushing piece;4310. pushing roller;4320. first driven gear;4330. fourth driven gear;4340. driving gear;4350. driving motor;4360. distributing blade;4400. discharging piece;4410. output cylinder;4420. discharge door;

[0031] 5100. first positioning piece;5200. second positioning piece;5300. third positioning piece;5400. fourth positioning piece;

[0032] 6000. pushing hydraulic cylinder;

[0033] 7000. slag crushing assembly;7100. slag crushing roller;7200. second driven gear;7300. crushing tooth cutter;

[0034] 8100. limiting roller;8200. third driven gear;8300. tension gear;

[0035] 9000. chain. DETAILED DESCRIPTION

[0036] For the purpose, structure, characteristics, and functions of the present application, the following detailed description is provided in conjunction with the embodiments.

[0037] As shown in Figures 1-6 A top slag cleaning device of a VD furnace is provided according to an embodiment of the present application, which comprises:

[0038] The guiding assembly, the grabbing assembly, the transfer trolley 3000, the transfer assembly 4000 and the positioning assembly;

[0039] The grabbing assembly is arranged on the guiding assembly, the transfer trolley 3000 is arranged below the guiding assembly, the transfer assembly 4000 is arranged on the transfer trolley 3000, and the positioning assembly is arranged on the guiding assembly, the grabbing assembly and the transfer trolley 3000 respectively,

[0040] The guiding assembly comprises support rods 1100, a support frame 1200 and guide rails 1300, the support rods 1100 are arranged at both ends of the support frame 1200, and the guide rails 1300 are arranged on the support frame 1200,

[0041] The grabbing assembly comprises a moving part 2100 and a refining slag grab bucket 2200, the moving part 2100 is slidingly arranged on the guide rails 1300, and the refining slag grab bucket 2200 is arranged on the moving part 2100,

[0042] The transfer trolley 3000 is arranged below the support frame 1200, the transfer trolley 3000 comprises a first placing notch 3200 for placing the VD furnace, a second placing notch 3300 for placing a slag pot and a transfer slide 3100, one end of the transfer trolley 3000 is provided with the first placing notch 3200, the other end of the transfer trolley 3000 is provided with the second placing notch 3300, and the transfer slide 3100 is arranged in parallel between the first placing notch 3200 and the second placing notch 3300,

[0043] The transfer assembly 4000 comprises a transfer support 4100, a transfer bucket 4200, an auxiliary slag pushing part and a discharging part 4400, the transfer support 4100 is provided with a transfer seat 4110 at the bottom, the transfer support 4100 is slidingly arranged in the transfer slide 3100 through the transfer seat 4110, the transfer bucket 4200 is arranged on the transfer support 4100, the auxiliary slag pushing part is arranged in the transfer bucket 4200, one end of the transfer bucket 4200 is provided with a discharging port 4210, and the discharging part 4400 is arranged at the discharging port 4210,

[0044] The positioning assembly comprises a first positioning member 5100, a second positioning member 5200, a third positioning member 5300 and a fourth positioning member 5400, the first positioning member 5100 is arranged on the moving part 2100, the second positioning member 5200 is arranged on the support rod 1100, the third positioning member 5300 is arranged on both sides of the horizontal center of the first placing notch 3200, and the fourth positioning member 5400 is arranged on the two side walls of the transfer trolley 3000;

[0045] When the user is refining by the VD method, the VD furnace is placed at the first placing notch 3200 of the transfer trolley 3000, when the furnace mouth of the VD furnace appears overflow slag, the user needs to use the top slag cleaning device of the VD furnace to clean the refining slag at the top mouth of the VD furnace, first, the user operates the transfer trolley 3000 to reach below the support frame 1200, when the second positioning member 5200 of the support rod 1100 and the fourth positioning member 5400 of the two side walls of the transfer trolley 3000 cooperate with each other, it indicates that the VD furnace is located directly below the support frame 1200, after determining that the position of the VD furnace reaches, the moving part 2100 starts to move, when the first positioning member 5100 of the moving part 2100 and the third positioning member 5300 on both sides of the first placing notch 3200 cooperate with each other, it indicates that the moving part 2100 is located above the furnace mouth of the VD furnace, at this time the moving part 2100 controls the refining slag grab bucket 2200 to move downward, the refining slag grab bucket 2200 moves downward into the furnace mouth of the VD furnace, and the refining slag grab bucket 2200 will open during the descending process, after the refining slag grab bucket 2200 reaches the position of the refining slag, the refining slag grab bucket 2200 is raised, the refining slag grab bucket 2200 will close during the ascending process, so as to grab the refining slag into the refining slag grab bucket 2200, the refining slag grab bucket 2200 rises to a position two meters higher than the furnace mouth of the VD furnace, the refining slag grab bucket 2200 is completely closed, at this time the transfer support 4100 is controlled to move on the transfer slide 3100 from the second placing notch 3300 to the first placing notch 3200, so that the other end of the transfer bucket 4200 on the transfer support 4100 is located directly above the furnace mouth of the VD furnace, the user controls the moving part 2100 to descend so that the refining slag grab bucket 2200 pours the refining slag in the grab bucket into the transfer bucket 4200, the capacity of the transfer bucket 4200 can place four times of the refining slag grabbed by the refining slag grab bucket 2200, wherein after the single refining slag grab bucket 2200 completes unloading, the transfer support 4100 moves to the second placing notch 3300 to the middle part of the transfer slide 3100, waits for the next time the refining slag grab bucket 2200 to guide the material, and the auxiliary push slag member in the transfer bucket 4200 continuously moves to play the role of stirring the refining slag, when the transfer bucket 4200 collects four times of the refining slag, the moving part 2100 controls the refining slag grab bucket 2200 to return to the initial position, at the same time the transfer support 4100 directly moves to the tank mouth of the slag tank at the second placing notch 3300, the discharge port 4210 is located at the center of the tank mouth of the slag tank, the user controls the discharge member 4400 to open, at the same time the auxiliary push slag transfer bucket 4200 moves to the discharge port 4210, so as to discharge the refining slag into the slag tank, after completing the slag discharge, the discharge member 4400 is closed, at this time the position of the transfer support 4100 does not change, the transfer trolley 3000 is started to return the VD furnace to the refining area, the user on site no longer needs to approach the VD furnace, improves the safety of slagging, and improves the efficiency of slagging.

[0046] Preferably, the refining slag grabbed by the refining slag grab 2200 is transported by setting the transport assembly 4000, avoiding moving the transport trolley 3000 and the moving part 2100 again, ensuring the accuracy of the refining slag grab 2200, and the transport assembly 4000 can carry the refining slag grabbed multiple times, thereby reducing the process of frequent transportation and slagging, improving efficiency, and saving cost.

[0047] Further, the moving part 2100 adopts an electric hoist, wherein the moving part 2100 is provided with a groove wheel cooperating with the guide rail 1300. The electric hoist adopts a bearing weight of ten tons, facilitating subsequent bearing of the refining slag grab 2200.

[0048] Further, as shown in Figure 1 , the top slag cleaning device of the VD furnace further includes a heat insulation shell 2300, which is sleeved on the refining slag grab 2200, and the outer side wall of the heat insulation shell 2300 is provided with a heat dissipation fan 2310. The temperature of the refining slag is relatively high, and a large amount of refining slag is grabbed in the grab of the refining slag grab 2200, causing hot gas to rise upward, thereby affecting the motor of the moving part 2100 above. At this time, the heat insulation shell 2300 is installed, wherein the top of the heat insulation shell 2300 is provided with a through hole for communicating the steel wire rope of the refining slag grab 2200, thereby isolating the hot gas from the moving part 2100, and the heat dissipation fans 2310 located on both sides of the heat insulation shell 2300 blow out the hot gas diffused into the heat insulation shell 2300 from both sides of the heat insulation shell 2300 through the heat dissipation fans 2310, avoiding the direct influence of the hot gas on the motor of the moving part 2100, thereby increasing the service life of the moving part 2100.

[0049] Further, as shown in Figure 2 , Figure 3 , Figure 4 and Figure 6 , the top slag cleaning device of the VD furnace further includes a pushing hydraulic cylinder 6000, which is arranged near the second placing notch 3300 on the two outer sides of the transport slide 3100, and the transport seat 4110 is provided with a sliding block cooperating with the transport slide 3100, and the output end of the pushing hydraulic cylinder 6000 is fixedly connected with one end of the transport seat 4110. The bottom of the sliding block is provided with a pulley to ensure smooth movement of the transport bracket 4100 on the transport slide 3100, wherein the output of the pushing hydraulic cylinder 6000 is stable, ensuring smooth operation of the transport bucket 4200 between the first placing notch 3200 and the second placing notch 3300.

[0050] Further, as shown in Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the auxiliary pushing component 4300 includes a pushing roller 4310, a first driven gear 4320, a fourth driven gear 4330, a driving gear 4340, and a drive motor 4350. The pushing roller 4310 is disposed through the transfer hopper 4200 and is close to the discharge port 4210. The first driven gear 4320 is disposed at one end of the pushing roller 4310, and the fourth driven gear 4330 is disposed at the other end of the pushing roller 4310. The drive motor 4350 is disposed on the transfer bracket 4100, and the driving gear 4340 is disposed at the output end of the drive motor 4350. The driving gear 4340 is close to the fourth driven gear 4330. The driving gear 4340 is driven by the fourth driven gear 4330 through a chain. The pushing roller 4310 is provided with multiple material distribution blades 4360. After the refining slag from the four grabs is filled into the transfer hopper, the auxiliary pusher 4300 inside the transfer hopper 4200 pushes the refining slag to the discharge port 4210. The working principle is as follows: the output end of the drive motor 4350 drives the drive gear 4340 to rotate. The drive gear 4340 drives the fourth driven gear 4330 through the chain. The rotation of the fourth driven gear 4330 drives the pusher roller 4310 to rotate, so that the distributing blades 4360 on the pusher roller 4310 push the refining slag in the transfer hopper 4200 from the feed port to the discharge port 4210.

[0051] Furthermore, such as Figure 3 and Figure 6 As shown, the unloading component 4400 includes an output cylinder 4410 and a unloading gate 4420. One end of the unloading gate 4420 is hinged to the unloading port 4210. The output cylinder 4410 is located on the side wall of the transfer hopper 4200 near the unloading port 4210, and its output end is hinged to the unloading gate 4420. When the transfer hopper 4200 needs to discharge refining slag, the output end of the output cylinder 4410 extends, causing the unloading gate 4420 to rotate counterclockwise with the hinge point of the unloading port 4210 as the center. The unloading gate 4420 rises to open the unloading port 4210. After the refining slag is discharged, the output end of the output cylinder 4410 retracts, causing the unloading gate 4420 to rotate clockwise with the hinge point of the unloading port 4210 as the center. This causes the unloading gate 4420 to fall and close the unloading port 4210.

[0052] Furthermore, such as Figure 4 and Figure 5As shown, the top slag cleaning device of the VD furnace further comprises a slag crushing assembly 7000, the slag crushing assembly 7000 comprises a slag crushing roller 7100 and a second driven gear 7200, the slag crushing roller 7100 is arranged in the transfer bucket 4200, the slag crushing roller 7100 is arranged on one side of the pushing roller 4310 away from the discharge port 4210, one end of the slag crushing roller 7100 is provided with the second driven gear 7200, the second driven gear 7200 and the first driven gear 4320 are driven by the chain 9000, and a plurality of crushing teeth knives 7300 are arranged on the slag crushing roller 7100. In the slag cleaning process, the transfer bucket 4200 is placed in the refining slag grabbed by the four-time refining slag grab bucket 2200, but after single grabbing, the grabbing step needs to be repeated, and the high-temperature refining slag may be caked in the transfer bucket 4200, at this time, the auxiliary pushing piece 4300 can only stir the refining slag close to the pushing roller 4310, and cannot stir the refining slag away from the pushing roller 4310, therefore, the slag crushing assembly 7000 is arranged to prevent the refining slag from caking in the transfer bucket 4200, and to avoid that the large refining slag damages the distribution blade 4360 on the pushing roller 4310, and the working principle is as follows: the driving gear 4340 rotates to drive the fourth driven gear 4330 to rotate through the chain, the pushing roller 4310 rotates, so that the first driven gear 4320 at the other end of the pushing roller 4310 synchronously rotates, the first driven gear 4320 drives the second driven gear 7200 to rotate through the chain 9000, the slag crushing roller 7100 rotates, so that the pushing roller 4310 and the slag crushing roller 7100 synchronously move, the slag crushing roller 7100 is away from the pushing roller 4310 and close to the feeding port, and a plurality of crushing teeth knives 7300 are arranged on the slag crushing roller 7100, when the slag crushing roller 7100 rotates, the crushing teeth knives 7300 synchronously rotate, continuously cut and crush the caked refining slag.

[0053] Further, as Figure 2 、 Figure 5 and Figure 6As shown, the top slag cleaning device of the VD furnace further comprises a limiting assembly, the limiting assembly comprises a limiting roller 8100, a third driven gear 8200 and a tension gear 8300 for locking the transmission chain 9000, the limiting roller 8100 is arranged in the transfer bucket 4200, the position of the limiting roller 8100 is directly below the position of the crushed slag roller 7100, the third driven gear 8200 is arranged at one end of the limiting roller 8100, the third driven gear 8200 is connected with the first driven gear 4320 and the second driven gear 7200 through the chain 9000, the side wall of the transfer bucket 4200 is provided with a chute 4220 perpendicular to the ground, and the tension gear 8300 is slidingly arranged in the chute 4220. The refined slag block close to the bottom of the transfer bucket 4200 cannot approach the crushed slag roller 7100, so the limiting assembly is arranged to avoid the caked refined slag sinking to the bottom of the transfer bucket 4200 and failing to be crushed, the third driven gear 8200 of the limiting roller 8100 is arranged in the chain 9000 matched with the first driven gear 4320 and the second driven gear 7200, so that the pushing roller 4310, the crushed slag roller 7100 and the limiting roller 8100 rotate synchronously, wherein the rotation of the limiting roller 8100 drives the refined slag around the limiting roller 8100 to move to the crushed slag roller 7100, so that the crushed slag teeth cutter 7300 on the crushed slag roller 7100 can continuously cut the refined slag, in order to ensure the synchronous rotation of the first driven gear 4320, the second driven gear 7200 and the third driven gear 8200, it is necessary to tension the chain 9000 driving the first driven gear 4320, the second driven gear 7200 and the third driven gear 8200, at this time, the position of the tension gear 8300 is adjusted, so that the tension gear 8300 is in contact with the chain, thereby ensuring the stability of the transmission of the chain 9000.

[0054] In the description of the utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" orientation or position relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model.

[0055] The utility model has been described by the above related embodiments, however, the above embodiments are only examples for implementing the utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the utility model. On the contrary, modifications and refinements made without departing from the spirit and scope of the utility model are all within the scope of patent protection of the utility model.

Claims

1. A top slag cleaning device for a VD furnace, characterized in that, The utility model relates to a VD furnace slag conveying device, including: A guide assembly includes a support rod, a support frame and a guide rail, the support frame is provided with the support rod at both ends respectively, and the guide rail is arranged on the support frame; A grabbing assembly includes a moving part and a refined slag grab bucket, the moving part is slidingly arranged on the guide rail, and the refined slag grab bucket is arranged on the moving part, A transfer trolley is arranged below the support frame, the transfer trolley includes a first placing notch for placing a VD furnace, a second placing notch for placing a slag pot and a transfer slide, one end of the transfer trolley is provided with the first placing notch, the other end of the transfer trolley is provided with the second placing notch, and the first placing notch and the second placing notch are provided with the parallel transfer slide; A transfer assembly is arranged on the transfer slide, the transfer assembly includes a transfer support, a transfer bucket, an auxiliary slag pushing part and a discharging part, the bottom of the transfer support is provided with a transfer seat, the transfer support is slidingly arranged in the transfer slide through the transfer seat, the transfer bucket is arranged on the transfer support, the auxiliary slag pushing part is arranged in the transfer bucket, one end of the transfer bucket is provided with a discharging port, and the discharging part is arranged at the discharging port; A positioning assembly includes a first positioning part, a second positioning part, a third positioning part and a fourth positioning part, the first positioning part is arranged on the moving part, the second positioning part is arranged on the support rod, the third positioning part is arranged on both sides of the horizontal center of the first placing notch, and the fourth positioning part is arranged on the two side walls of the transfer trolley.

2. The top-slag cleaning device of a VD furnace according to claim 1, characterized in that, The moving part adopts an electric hoist crane, the moving part is provided with a groove wheel, and the groove wheel cooperates with the guide rail.

3. The top-slag cleaning device of a VD furnace according to claim 1, characterized by, Further including a heat insulation shell, the heat insulation shell is sleeved on the refined slag grab bucket, and a heat dissipation fan is arranged on the outer side wall of the heat insulation shell.

4. The top-slag cleaning device of a VD furnace according to claim 1, characterized by, Further including a pushing hydraulic cylinder, the pushing hydraulic cylinder is arranged on both outer sides of the transfer slide close to the second placing notch, the transfer seat is provided with a sliding block, the sliding block cooperates with the transfer slide, and the output end of the pushing hydraulic cylinder is fixedly connected with one end of the transfer seat.

5. The top-slag cleaning device of a VD furnace according to claim 1, characterized by, The auxiliary pushing part includes a pushing roller, a first driven gear, a fourth driven gear, a driving gear and a driving motor, the pushing roller is penetratingly arranged in the transfer bucket, the pushing roller is close to the discharging port, one end of the pushing roller is provided with the first driven gear, the other end of the pushing roller is provided with the fourth driven gear, the driving motor is arranged on the transfer support, the output end of the driving motor is provided with the driving gear, the driving gear is close to the fourth driven gear, the driving gear and the fourth driven gear are driven through a chain, and a plurality of distributing blades are arranged on the pushing roller.

6. The top-slag cleaning device of a VD furnace according to claim 1, characterized by, The discharging part includes an output cylinder and a discharging door, one end of the discharging door is hinged on the discharging port, the output cylinder is arranged on the side wall of the transfer bucket close to the discharging port, and the output end of the output cylinder is hinged with the discharging door.

7. The top-slag cleaning device of a VD furnace according to claim 5, characterized in that, Further comprising a slag crushing assembly, the slag crushing assembly comprises a slag crushing roller and a second driven gear, the slag crushing roller is arranged in the transfer hopper, the slag crushing roller is arranged on one side of the pushing roller away from the discharging opening, one end of the slag crushing roller is provided with the second driven gear, the second driven gear is connected with the first driven gear through a chain, and a plurality of crushing teeth are arranged on the slag crushing roller.

8. The top-slag cleaning device of a VD furnace according to claim 7, characterized in that, Further comprising a limiting assembly, the limiting assembly comprises a limiting roller, a third driven gear and a tensioning gear for locking a transmission chain, the limiting roller is arranged in the transfer hopper, the limiting roller is arranged below the slag crushing roller, one end of the limiting roller is provided with the third driven gear, the third driven gear is connected with the first driven gear and the second driven gear through a chain respectively, a chute is arranged on the side wall of the transfer hopper and is perpendicular to the ground, and the tensioning gear is slidingly arranged in the chute.

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