Automatic slag removal device for casting blank

Abstract

The invention discloses an automatic casting blank slag removal device, belongs to the technical field of metallurgy, and aims to improve slag removal efficiency. Comprising a bottom surface slag removal mechanism and a side surface slag removal mechanism, the bottom face slag removing mechanism is located between every two adjacent conveying rollers in the conveying direction of the conveying roller way and installed below the roller face of the conveying roller way. The bottom surface slag removal mechanism comprises a frame body and a bottom brush; the two ends of the frame body are detachably installed on a track frame of the continuous casting machine, the bottom brush is arranged in the longitudinal direction and installed on the frame body, and the top end of the brush body is higher than the roller face of a conveying roller way. The two sides of the conveying path are each provided with a side face slag removing mechanism, each side face slag removing mechanism comprises a support and a side brush, the side brushes are installed on the supports, and brush bodies of the side brushes horizontally face the inner side of the conveying roller way in the longitudinal direction. Through the arrangement of the bottom face slag removing mechanism and the side face slag removing mechanisms on the two sides, slag such as oxide scales on the bottom face and the side faces on the two sides of the casting blank is removed, slag removing is more thorough, the slag on the bottom face and the side faces of the casting blank can be rapidly removed, and the cleaning efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to an automatic slag cleaning device for casting blanks. Background Art

[0002] Initially, the conveying rollers of the slab continuous casting machine were not designed with professional slag removal devices to clean the iron oxide scale on the surface of the ingot. During the ingot production process, the ingot with iron oxide scale would drop part of the scale onto the rotating roller in front of the conveying roller, which had a great impact on the service life of the rotating roller. In addition, when the ingot was hoisted and transported by car to other process workshops for rolling, the falling of iron oxide scale would have a great impact on the surrounding environment, and even cause personal injury under the influence of wind.

[0003] In order to avoid the problem of iron oxide being transported to the next link along the conveyor roller, the original conveyor roller of the slab continuous casting machine was improved, such as Figure 1 As shown, a slag discharge bucket is arranged below the conveying roller 4 of the slab continuous casting machine, and the slag discharge bucket is connected to the swirl well 6 through a slag discharge channel 7. During the conveying process, the cast billet generates friction with the roller surface of the conveying roller, and part of the oxidized iron scale and other slag on the surface of the cast billet is removed and dropped into the slag discharge bucket below the conveying roller. Through the impact of the water flow on the slag discharge bucket, the slag is flushed into the swirl well 6 through the slag discharge channel 7, and the slag is allowed to precipitate in the swirl well 6. Then, the precipitated slag is lifted out from the entrance of the swirl well by a slag clamp, piled at a designated location, and transported away by a slag transport vehicle for unified treatment. The water in the swirl well is pumped out by a slag flushing pump and transported to the equipment for slag flushing, forming a green cycle and reducing the excessive consumption of water resources by the equipment. This structure follows the design concept of the original equipment, can recycle the slag flushing water, and the oxidized iron scale on the surface of the cast billet can be uniformly recycled and treated. However, in the actual production process, it was found that only a small amount of slag can be removed by the friction between the roller and the billet surface, and the contact surface between the roller surface and the billet is only the bottom surface of the billet. A large amount of slag still adheres to the billet and enters the next process. The concept of unified recycling has little effect.

[0004] In order to improve the recycling effect, a set of burr rollers is added on the basis of the previous design. The burr rollers are driven by a motor. Under the rotation of the burr rollers, the iron oxide scale on the surface of the ingot is removed. Although the slag cleaning effect is improved, there are the following problems:

[0005] First, the slag cleaning with the burr roller will cause slag splashing, so a protective cover needs to be installed separately, which takes up a lot of space;

[0006] Second, the slag removal device of the slag roller can only remove the slag on the bottom surface of the ingot, and the slag on both sides of the ingot cannot be cleaned properly;

[0007] Third, the conveying roller is located after the 9th roller after the horizontal section of the billet. At this time, the billet surface is still at a high temperature, and the motor drive may cause scratches on the billet surface, affecting the process quality;

[0008] Fourthly, the cost of the burr roller device is relatively high and the expected quality effect cannot be achieved. Summary of the invention

[0009] The purpose of the present invention is to provide an automatic slag cleaning device for casting ingots to improve the slag cleaning efficiency.

[0010] The technical solution adopted by the present invention is: an automatic slag cleaning device for ingot casting, comprising a bottom slag cleaning mechanism and a side slag cleaning mechanism; the bottom slag cleaning mechanism is located between two adjacent conveying rollers of the conveying roller along the conveying direction of the conveying roller, and is installed under the roller surface of the conveying roller; the bottom slag cleaning mechanism comprises a frame and a bottom brush; both ends of the frame are detachably installed on the track frame of the continuous casting machine, the bottom brush is arranged and installed on the frame along the longitudinal direction, and the top end of the brush body is higher than the roller surface of the conveying roller; a pair of side slag cleaning mechanisms are respectively arranged on both sides of the transmission path, the side slag cleaning mechanism comprises a support and a side brush, the side brush is installed on the support, and the brush body of the side brush is horizontally facing the inner side of the conveying roller along the longitudinal direction.

[0011] Furthermore, an adjusting pad is provided on both sides of the frame, and the adjusting pad is fixed to the inner side wall of the track frame on both sides of the transmission roller; and the two ends of the frame are supported by the adjusting pad.

[0012] Furthermore, a circular transmission rod is arranged on the frame along its longitudinal direction, and both ends of the transmission rod are respectively supported on the frame; a transmission component is sleeved on the outer periphery of the transmission rod, and the transmission component includes a sleeve and a connecting plate fixed on the sleeve, the top end of the connecting plate is connected to the bottom brush, and the bottom end is connected to the balance rod; the sleeve and the transmission rod are rotationally matched.

[0013] Furthermore, the bottom brush and the side brush each include a brush box and a brush body; the brush body includes an end connection portion and bristles fixed to the end connection portion; the brush box is a square box, and an installation slot is provided at the beginning of the side wall of the brush box, and the installation slot passes through the insertion port of the brush box; the end connection portion of the brush body is inserted into the brush box through the insertion port, and the brush body and the brush box are fixed by connecting screws passing through the installation slot.

[0014] Furthermore, a vertically arranged connecting shaft is fixed on the support, and a transmission member is movably mounted on the connecting shaft. One end of the transmission member is connected to the tail of the side brush, and the other end is connected to a steel wire rope. The end of the steel wire rope is connected to a counterweight after passing through a steering pulley.

[0015] Furthermore, the transmission member is a vertically arranged plate.

[0016] Furthermore, the support is trough-shaped, including a top plate, a bottom plate and a vertical stand, and a reinforcing plate is welded between the stand and the bottom plate; the top plate is fixed at the bottom end of the connecting shaft; and the bottom plate is fixed to the top surface of the track frame.

[0017] Beneficial effects of the present invention: The automatic slag cleaning device for the ingot disclosed in the present invention has a bottom slag cleaning mechanism installed under the roller surface of the conveying roller, and the top of the bristles of the bottom brush is higher than the roller surface of the conveying roller, so that when the ingot moves forward on the roller surface of the conveying roller, the bristles of the bottom brush are pressed, and the bristles are driven to bend, and friction occurs between the bristles and the bottom surface of the ingot, which plays a role in cleaning the oxidized iron scale and other slag on the bottom surface of the ingot. When the ingot moves forward on the roller surface of the conveying roller, friction occurs between the left side of the ingot and the bristles of the left side slag cleaning mechanism, and the left side slag cleaning mechanism plays a role in cleaning the oxidized iron scale and other slag on the left side of the ingot. Similarly, the right side slag cleaning mechanism plays a role in cleaning the oxidized iron scale and other slag on the right side of the ingot. By setting up the bottom slag cleaning mechanism and the side slag cleaning mechanisms on both sides, the slag such as iron oxide scale on the bottom surface and the sides of the ingot can be removed. The slag cleaning is cleaner and the slag on the bottom surface and the sides of the ingot can be quickly cleaned with high cleaning efficiency.

[0018] The bottom slag cleaning mechanism and the side slag cleaning mechanism are installed between two transmission rollers, and have the advantages of small installation volume, simple manufacture, easy later repair and maintenance, safe use, and will not affect the use of the ingot storage device.

[0019] The bottom brush and the side brush use the billet transmission as kinetic energy to clean the billet surface. The slag is removed more cleanly without damaging the billet surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of slag removal from the conveying roller of the existing slab continuous casting machine;

[0021] Figure 2 It is a schematic diagram of the structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the side brush and bottom brush structure;

[0023] Figure 4 It is a schematic diagram of the structure of the bottom slag cleaning mechanism;

[0024] Figure 5 It is a schematic diagram of the side slag cleaning mechanism structure.

[0025] In the figure, there are bottom slag cleaning mechanism 1, frame 11, bottom brush 12, adjustment pad 13, transmission rod 14, sleeve 15, connecting plate 16, balance rod 17, side slag cleaning mechanism 2, support 21, top plate 21A, bottom plate 21B, vertical plate 21C, reinforcing plate 21D, side brush 22, connecting shaft 23, transmission member 24, wire rope 25, steering pulley 26, counterweight 27, brush box 31, brush body 32, mounting slot 33, connecting screw 34, conveying roller 4, track frame 41, conveying roller 42, ingot 5, vortex well 6, slag discharge channel 7, rotating table 8, and ingot guide storage device 9. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0027] In this specification, the terms "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the attached Figure 2 The orientation or positional relationship shown is only for the convenience of describing the present invention, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0028] Automatic slag removal device for casting billet, such as Figure 2 As shown, it includes a bottom slag cleaning mechanism 1 and a side slag cleaning mechanism 2;

[0029] like Figure 4 As shown, the bottom slag cleaning mechanism 1 is located between two adjacent conveying rollers 42 of the conveying roller 4 along the conveying direction of the conveying roller 4, and is installed under the roller surface of the conveying roller 4; the bottom slag cleaning mechanism 1 includes a frame 11 and a bottom brush 12; both ends of the frame 11 are detachably installed on the track frame 41 of the continuous casting machine, and the bottom brush 12 is arranged and installed on the frame 11 along the longitudinal direction, and the top of the brush bristles is higher than the roller surface of the conveying roller 4;

[0030] A pair of side slag cleaning mechanisms 2 are respectively arranged on both sides of the transmission path. Figure 5 As shown, the side slag cleaning mechanism 2 includes a support 21 and a side brush 22. The side brush 22 is installed on the support 21. The bristles of the side brush 22 are horizontally directed toward the inner side of the conveying roller 4 along the longitudinal direction and exceed the boundary line of the corresponding side of the roller surface of the conveying roller 4.

[0031] The automatic slag cleaning device for the ingot disclosed in the present invention has a bottom slag cleaning mechanism 1 installed under the roller surface of the conveying roller 4, and the top of the bristles of the bottom brush 12 is higher than the roller surface of the conveying roller 4, so that the bristles of the bottom brush 12 are pressed when the ingot 5 moves forward on the roller surface of the conveying roller 4, and the bristles are bent, and friction occurs between the bristles and the bottom surface of the ingot 5, which plays a role in cleaning the slag such as iron oxide on the bottom surface of the ingot 5.

[0032] With the traveling direction of the transmission path as the front and rear, and the two sides of the transmission path as the left and right sides respectively, the bristles of the side slag cleaning mechanism 2 installed on the left side of the transmission path extend to the right and exceed the left boundary line of the roller surface of the conveying roller 4. When the ingot 5 moves forward on the roller surface of the conveying roller 4, friction occurs between the left side of the ingot 5 and the bristles of the side slag cleaning mechanism 2 on the left side, and the side slag cleaning mechanism 2 on the left side cleans the slag such as the oxidized iron scale on the left side of the ingot 5. Similarly, the side slag cleaning mechanism 2 on the right side cleans the slag such as the oxidized iron scale on the right side of the ingot 5.

[0033] By providing the bottom slag cleaning mechanism 1 and the side slag cleaning mechanisms 2 on both sides, slag such as iron oxide scale on the bottom surface and both side surfaces of the ingot 5 can be removed, and the slag cleaning is cleaner.

[0034] The track frame 41 of the conveying roller 4 and the two adjacent conveying rollers 42 form a plurality of installation areas, and the bottom slag cleaning mechanism 1 and the side slag cleaning mechanism 2 can be located in the same installation area or distributed in different installation areas. Of course, the side slag cleaning mechanisms 2 on the left and right sides can be located in the same installation area or distributed in different installation areas. In the embodiment disclosed in the accompanying drawings, the bottom slag cleaning mechanism 1 and the side slag cleaning mechanism 2 are located in the same installation area, and the side slag cleaning mechanisms 2 on both sides are arranged oppositely. Moreover, during the conveying process, the ingot 5 first passes through the side slag cleaning mechanism 2 to clean the slag on the side, and then reaches the bottom slag cleaning mechanism 1 to clean the slag on the bottom.

[0035] The frame 11 can be directly installed on the track frame 41, but the following problems need to be considered: First, if the frame 11 is directly installed on the top surface of the track frame 41, there is a problem that the bottom brush 12 installed on the top of the frame 11 is located at an increased position, and the available space is reduced; second, if the frame 11 is installed on the inner side of the track frame 41, because the frame 11 spans across both sides of the conveyor roller 4, the frame 11 needs to be adjusted horizontally during installation, and the operation intensity and difficulty increase accordingly. In order to overcome the above problems, in this embodiment, preferably, an adjustment pad 13 is provided on both sides of the frame 11, and the adjustment pad 13 is respectively fixed to the inner side wall of the track frame 41 on both sides of the transmission member 24 conveyor roller 4; the two ends of the frame 11 are respectively supported on the adjustment pad 13. First, the adjustment pad 13 is made of a square block throughout its length, which is lighter and more convenient to install and level. After it is fixed to the inner wall of the track frame 41, the frame 11 is directly placed on the adjustment pad 13 and welded. There is no need to make too many adjustments to the track frame 41, nor is there a need for two external supports for the track frame 41.

[0036] In order to enable the bristles of the bottom brush 12 to generate a certain force to clean the oxidized iron scale on the bottom surface of the ingot 5 when they contact the bottom surface of the ingot, in this embodiment, a circular transmission rod 14 is arranged on the frame 11 along its longitudinal direction, and the two ends of the transmission rod 14 are respectively supported on the frame 11; a transmission component is sleeved on the outer periphery of the transmission rod 14, and the transmission component includes a sleeve 15 and a connecting plate 16 fixed on the sleeve 15, the top end of the connecting plate 16 is connected to the bottom brush 12, and the bottom end is connected to a balance rod 17; the sleeve 15 and the transmission rod 14 are rotationally matched.

[0037] When the ingot 5 reaches the bottom slag cleaning mechanism 1, the bristles of the bottom brush 12 contact the bottom surface of the ingot 5, and the bristles are subjected to a friction force consistent with the moving direction of the ingot 5. The balance bar 17 rotates around the transmission rod 14 through the sleeve 15, thereby transmitting its own weight force to the bottom brush 12, so that the bottom brush 12 generates a force on the bottom surface of the ingot 5. Under the principle of leverage, the bristles of the bottom brush 12 bend and always adhere to the bottom surface of the ingot 5, thereby achieving the purpose of removing slag from the bottom surface of the ingot 5. This structure utilizes the contact between the ingot and the bottom brush 12 to drive the bottom slag cleaning mechanism 1 to operate, and through the balance bar 17 and the transmission assembly of the bottom slag cleaning mechanism 1, the bottom brush 12 can generate a certain force on the bottom surface of the ingot 5 to achieve the purpose of slag cleaning, without the need to configure a separate power device such as a motor, saving energy.

[0038] With this structure, the angle of the bottom brush 12 can be adjusted by rotating the sleeve 15 and the transmission rod 14, so that the angle of the bottom brush 12 can be adjusted according to the severity of the iron oxide scale on the surface of the ingot. For example, if cleaning is not required, the angle can be adjusted so that the bottom brush 12 does not contact the surface of the ingot, thereby reducing the wear of the bottom brush 12.

[0039] In order to facilitate disassembly and assembly and reduce installation and maintenance time, in this embodiment, Figure 3 As shown, the bottom brush 12 includes a brush box 31 and a brush body 32; the brush body 32 includes an end connection portion and bristles fixed to the end connection portion; the brush box 31 is a square box, and a mounting slot 33 is provided at the beginning of the side wall of the brush box 31, and the mounting slot 33 passes through the insertion port of the brush box 31; the end connection portion of the brush body 32 is inserted into the brush box 31 through the insertion port, and the brush body 32 and the brush box 31 are fixed by connecting screws 34 passing through the mounting slot 33.

[0040] The bristles are consumable parts. In order to save costs, the bristles are made of waste steel wire. The function of the end connection part is to tie the bristles made of waste steel wire together to form a brush body 32. The brush body 32 is installed in the brush box 31 using a card sleeve. As shown in the figure, the waste steel wire is cut into a suitable length offline, tied into a brush body 32 and loaded into the prepared brush box 31, and the two connecting screws 34 are tightened to arrange the steel wire in order in the brush box 31. When replacing online, loosen the connecting screws 34, take out the old brush body 32, and put in the offline assembled brush body 32. The U-shaped installation notch 33 on the brush box 31 can adjust the extension length of the brush body 32. After adjusting the length, tighten the connecting screws 34 and the brush body is replaced. This card sleeve installation method greatly reduces the installation and maintenance time.

[0041] In order to effectively remove the slag on the side of the ingot 5, preferably, a vertically arranged connecting shaft 23 is fixed on the support 21, and a transmission member 24 is movably mounted on the connecting shaft 23. One end of the transmission member 24 is connected to the tail of the side brush 22, and the other end is connected to a wire rope 25. The end of the wire rope 25 is connected to a counterweight 27 after winding around a steering pulley 26. During operation, the counterweight 27 applies a pulling force to the transmission member 24 through the wire rope 25, so that when the ingot 5 passes through the side slag cleaning mechanism 2, the side brush 22 is subjected to the friction force on the side of the ingot 5 and the pulling force of the counterweight 27, and the bristles of the side brush 22 are bent and closely attached to the side of the ingot 5, thereby achieving the effect of cleaning the slag on the side of the ingot 5. There is no need to configure a power device such as a motor separately, saving energy.

[0042] The transmission member 24 may be a rod, and in this embodiment, the transmission member 24 is a vertically arranged plate. Compared with the rod, the weld between the vertically arranged plate and the side brush 22 is longer and more secure, and the vertically arranged plate has better rigidity stability, so that the bending degree of the side brush 22 in the cantilever state is controlled, which is more conducive to effectively acting on the side of the ingot 5.

[0043] The support 21 can have various forms, such as I-shaped, cylindrical, etc. In the present embodiment, the support 21 is trough-shaped, including a top plate 21A, a bottom plate 21B and a vertical upright plate 21C, and a reinforcing plate 21D is welded between the upright plate 21C and the bottom plate 21B; the bottom end of the connecting shaft 23 fixes the top plate 21A; the bottom plate 21B is fixed to the top surface of the track frame 41.

[0044] In the description of this specification, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Automatic slag removal device for casting, characterized by: The invention comprises a bottom slag cleaning mechanism (1) and a side slag cleaning mechanism (2); the bottom slag cleaning mechanism (1) is located between two adjacent transmission rollers (42) of the transmission roller (4) along the transmission direction of the transmission roller (4), and is installed below the roller surface of the transmission roller (4); the bottom slag cleaning mechanism (1) comprises a frame (11) and a bottom brush (12); both ends of the frame (11) can be detachably installed on the track frame (41) of the continuous casting machine, the bottom brush (12) is arranged and installed on the frame (11) along the longitudinal direction, and the top of the brush body is higher than the roller surface of the transmission roller (4); a pair of side slag cleaning mechanisms (2) are respectively arranged on both sides of the transmission path, the side slag cleaning mechanism (2) comprises a support (21) and a side brush (22), the side brush (22) is installed on the support (21), and the brush body of the side brush (22) is horizontally oriented toward the inner side of the transmission roller (4) along the longitudinal direction.

2. The automatic slag cleaning device for casting according to claim 1, characterized in that: An adjustment pad (13) is provided on both sides of the frame (11), and the adjustment pad (13) is fixed to the inner side wall of the track frame (41) on both sides of the transmission member (24) conveying roller (4); the two ends of the frame (11) are supported on the adjustment pad (13).

3. The automatic slag cleaning device for casting according to claim 1, characterized in that: A circular transmission rod (14) is arranged on the frame (11) along its longitudinal direction, and the two ends of the transmission rod (14) are respectively supported on the frame (11); a transmission assembly is sleeved on the outer periphery of the transmission rod (14), and the transmission assembly comprises a sleeve (15) and a connecting plate (16) fixed on the sleeve (15); the top end of the connecting plate (16) is connected to the bottom brush (12), and the bottom end is connected to a balance rod (17); the sleeve (15) and the transmission rod (14) are rotationally matched.

4. The automatic slag cleaning device for casting according to any one of claims 1 to 3, characterized in that: The bottom brush (12) and the side brush (22) both comprise a brush box (31) and a brush body (32); the brush body (32) comprises an end connection portion and bristles fixed to the end connection portion; the brush box (31) is a square box, and a mounting notch (33) is provided at the beginning of the side wall of the brush box (31), and the mounting notch (33) passes through an insertion port of the brush box (31); the end connection portion of the brush body (32) is inserted into the brush box (31) through the insertion port, and the brush body (32) and the brush box (31) are fixed by a connecting screw (34) passing through the mounting notch (33).

5. The automatic slag cleaning device for casting according to any one of claims 1 to 3, characterized in that: A vertically arranged connecting shaft (23) is fixed on the support (21), and a transmission member (24) is movably mounted on the connecting shaft (23). One end of the transmission member (24) is connected to the tail of the side brush (22), and the other end is connected to a steel wire rope (25). The end of the steel wire rope (25) is connected to a counterweight block (27) after passing through a steering pulley (26).

6. The automatic slag cleaning device for casting according to claim 5, characterized in that: The transmission member is a plate member arranged vertically.

7. The automatic slag cleaning device for casting according to claim 5, characterized in that: The support (21) is groove-shaped and comprises a top plate (21A), a bottom plate (21B) and a vertical upright plate (21C), and a reinforcing plate (21D) is welded between the upright plate (21C) and the bottom plate (21B); the top plate (21A) is fixed at the bottom end of the connecting shaft (23); and the bottom plate (21B) is fixed to the top surface of the track frame (41).

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