Heat preservation cover for casting blank direct rolling process of small square billet continuous casting machine

Abstract

The utility model belongs to the technical field of steel smelting, and particularly relates to a heat preservation cover for a casting blank direct rolling process of a small square billet continuous casting machine. Comprising a support, a roller way is installed on the support, a plurality of motors are arranged on one side of the roller way, a plurality of telescopic cylinders are hinged to the end, close to the motors, of the support, rib plates are hinged to the output ends of the telescopic cylinders, vertical supports are hinged to the middle positions of the rib plates, and an upper cover body is welded to the other ends of the rib plates; a plurality of lower covers are fixed to the positions, at the bottom end of the roller way, of the support, a plurality of slag discharging openings are formed in the bottoms of the lower covers, a plurality of heavy hammer boxes and turning plates are welded to the bottoms of the slag discharging openings through hinge pieces, the heavy hammer boxes are filled with heavy blocks, and the slag discharging openings are covered with the turning plates. According to the utility model, the upper surface, the side surface and the lower surface of the roller bed can be covered, so that the temperature drop of a casting blank on the roller bed is prevented from being too large, the requirement of a direct rolling process on the temperature of the casting blank is met, and meanwhile, oxide scale falling from the casting blank can be automatically discharged.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel smelting, and particularly relates to a heat preservation cover used in a direct rolling process of a billet continuous casting machine. Background Art

[0002] At present, many steel industries have realized the direct rolling process of directly rolling the ingot without passing through the heating furnace. Due to the poor thermal insulation performance of the current ingot roller, the temperature drop of the ingot is large at the normal low pulling speed. If the ingot is to meet the direct rolling of steel rolling, a higher pulling speed must be guaranteed to reach the temperature of the ingot before it enters the rolling mill, that is, the temperature drop is reduced by increasing the pulling speed. However, there is a great risk of steel leakage in the ingot under high pulling speed conditions. Therefore, it is an urgent problem to design a new type of thermal insulation cover to ensure the direct rolling temperature of the ingot at a low pulling speed of less than 3.8m / min. Summary of the invention

[0003] The utility model aims to provide a heat preservation cover for a billet direct rolling process of a small billet continuous casting machine, so as to solve the problems existing in the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a heat preservation cover for the direct rolling process of the billet continuous casting machine, comprising a bracket, a roller table is installed on the bracket, a plurality of motors are arranged on one side of the roller table, a plurality of telescopic cylinders are hinged at one end of the bracket close to the motor, the output ends of the telescopic cylinders are hinged with rib plates, a vertical support is hinged at the middle position of the rib plate, an upper cover body is welded at the other end of the rib plate, a plurality of side cover bodies are fixed on both sides of the roller table by the bracket, a plurality of lower cover bodies are fixed at the bottom end of the roller table by the bracket, a plurality of slag discharge ports are arranged at the bottom of the lower cover bodies, a plurality of weight boxes and flaps are welded to the bottom of the slag discharge ports through hinged parts, a weight block is filled in the weight box, and a plurality of flaps cover the slag discharge ports.

[0005] Furthermore, the rib plate is hinged to the telescopic cylinder and tilted downward and hinged to the vertical support. The bottom end of the vertical support is fixed on the bracket. The rib plate is hinged to the vertical support and extends horizontally to the top of the roller.

[0006] Furthermore, the upper cover body is U-shaped, with the U-shaped opening facing downward, the upper cover body is fixed below the rib plate above the roller, and the lower edge of the upper cover body is attached to the upper ends of the side covers on both sides of the roller.

[0007] Furthermore, the upper cover body, side cover body and lower cover body are all sandwich insulation covers, the shells of the upper cover body, side cover body and lower cover body are all 304 stainless steel, the cores of the upper cover body and side cover body are all aluminum silicate fiber blankets, and the core of the lower cover body is lightweight insulation castable.

[0008] Furthermore, the upper cover body and the lower cover body are linearly distributed along the roller direction, and the side cover bodies are linearly distributed on both sides of the roller.

[0009] Furthermore, the hinge is U-shaped, the hinge is welded to the lower cover at the slag discharge port, and a connecting plate is hinged in the hinge through a pin shaft penetrating the hinge.

[0010] Furthermore, there is an obtuse angle bend in the middle of the connecting plate, one end of the connecting plate is welded to the bottom of the flip plate, and the other end of the connecting plate is welded to the top of the weight box, and the hinge is welded to the weight box and the flip plate through the connecting plate.

[0011] Furthermore, the weight box is a box body with a cavity inside, and the weight block is filled in the inner cavity of the weight box. An opening facing upward is provided on the weight box near the connecting plate for filling the weight block into the weight box through the opening.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model can cover the top, side and bottom of the roller table, thereby preventing the temperature drop of the ingot on the roller table from being too large, thereby meeting the requirements of the direct rolling process on the ingot temperature, and at the same time can automatically discharge the oxidized iron scale dropped from the ingot.

[0014] 2. The roller table is covered inside by the upper cover, side cover and lower cover, so as to insulate the ingot on the roller table and prevent the ingot from dropping too much in temperature during transportation, thereby ensuring that the temperature of the ingot reaches the direct rolling temperature before entering the rolling mill.

[0015] 3. The upper cover can be opened. When heat preservation is required, the upper cover is extended by the telescopic cylinder to cover the roller. When heat preservation is not required, the upper cover is retracted by the telescopic cylinder to open the upper cover to the motor side.

[0016] 4. The telescopic cylinder should be kept at a certain distance from the roller table to prevent it from being damaged due to high temperature.

[0017] 5. A slag discharge port is arranged on the lower cover body, and a flap and a heavy hammer box are hinged at the slag discharge port. When the iron oxide scale dropped from the ingot accumulates on the flap and reaches a certain weight, the flap automatically flips down to discharge the slag. After the iron oxide scale falls, the flap covers the slag discharge port again under the action of the heavy block in the heavy hammer box, thereby realizing automatic slag discharge and preventing excessive temperature drop during the slag discharge process.

[0018] 6. The upper cover, side cover and lower cover are all sandwich insulation covers. The cores of the upper cover and side cover are aluminum silicate fiber blankets, and the core of the lower cover is lightweight insulation castable, thereby increasing its insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the structure of the utility model from top view.

[0021] Figure 3 It is a schematic diagram of the vertical cross-sectional structure of the slag discharge port of the utility model.

[0022] Figure 4 It is a schematic diagram of the structure of the lower cover body of the utility model when viewed from above.

[0023] Figure 5 It is a schematic diagram of the structure of the hinged part of the utility model.

[0024] Among them: 1. bracket; 2. roller; 3. motor; 4. telescopic cylinder; 5. rib plate; 6. vertical support; 7. upper cover; 8. side cover; 9. lower cover; 10. slag discharge port; 11. hinge; 12. flap; 13. weight box; 14. weight block; 15. pin shaft; 16. connecting plate; 17. opening. DETAILED DESCRIPTION

[0025] The utility model will now be described in further detail with reference to the accompanying drawings.

[0026] like Figure 1-5 As shown, a heat preservation cover for direct rolling process of billet continuous casting machine comprises a bracket 1, on which a roller 2 is installed, and a plurality of motors 3 are arranged on one side of the roller 2, and a plurality of telescopic cylinders 4 are hinged at one end of the bracket 1 close to the motor 3, and ribs 5 are hinged at the output ends of the telescopic cylinders 4, and vertical supports 6 are hinged at the middle position of the ribs 5, and an upper cover body 7 is welded to the other end of the ribs 5, and a plurality of side covers 8 are fixed on both sides of the roller 2 of the bracket 1, and a plurality of lower covers 9 are fixed on the bottom of the roller 2 of the bracket 1, and a plurality of slag discharge ports 10 are arranged at the bottom of the lower covers 9, and a plurality of weight boxes 13 and flaps 12 are welded to the bottom of the slag discharge ports 10 through hinges 11, and a weight 14 is filled in the weight box 13, and a plurality of flaps 12 cover the slag discharge ports 10.

[0027] The rib plate 5 is hinged to the telescopic cylinder 4 and tilted downward and hinged to the vertical support 6. The bottom end of the vertical support 6 is fixed to the bracket 1. The rib plate 5 is hinged to the vertical support 6 and extends horizontally to the top of the roller table 2.

[0028] The upper cover 7 is U-shaped, with the U-shaped opening 17 facing downward. The upper cover 7 is fixed below the rib 5 above the roller 2, and the lower edge of the upper cover 7 is attached to the upper ends of the side covers 8 on both sides of the roller 2.

[0029] The upper cover 7 can be opened. When heat preservation is required, the telescopic cylinder 4 is extended to cover the upper cover 7 above the roller 2. When heat preservation is not required, the telescopic cylinder 4 is retracted to open the upper cover 7 to the motor 3 side.

[0030] The upper cover 7, the side cover 8, and the lower cover 9 are all sandwich-type heat-insulating covers. The shells of the upper cover 7, the side cover 8, and the lower cover 9 are all 304 stainless steel. The sandwich of the upper cover 7 and the side cover 8 is aluminum silicate fiber blanket, and the sandwich of the lower cover 9 is lightweight heat-insulating castable. The roller 2 is covered inside by the upper cover 7, the side cover 8, and the lower cover 9, so as to insulate the ingot on the roller 2 and prevent the ingot from dropping too much in temperature during transportation, so as to ensure that the temperature of the ingot before entering the rolling mill reaches the direct rolling temperature.

[0031] The upper cover body 7 and the lower cover body 9 are linearly distributed along the direction of the roller conveyor 2 , and the side cover bodies 8 are linearly distributed on both sides of the roller conveyor 2 .

[0032] The hinge 11 is U-shaped and is welded to the lower cover 9 at the slag discharge port 10 . A connecting plate 16 is hingedly connected in the hinge 11 via a pin shaft 15 penetrating the hinge 11 .

[0033] The connecting plate 16 has an obtuse bend in the middle, one end of the connecting plate 16 is welded to the bottom of the flip plate, and the other end of the connecting plate 16 is welded to the top of the weight box 13 . The hinge 11 is welded to the weight box 13 and the flip plate 12 through the connecting plate 16 .

[0034] When the iron oxide scale falling from the ingot accumulates on the flap 12 and reaches a certain weight, the flap 12 automatically flips down to discharge the slag. After the iron oxide scale falls, under the action of the weight block 14 in the hammer box 13, the flap 12 covers the slag discharge port 10 again, thereby realizing automatic slag discharge and preventing excessive temperature drop during the slag discharge process.

[0035] The weight box 13 is a box body with a cavity inside, and the weight block 14 is filled in the inner cavity of the weight box 13. An opening 17 facing upward is provided on the weight box 13 near the connecting plate 16 for filling the weight block 14 into the weight box 13 through the opening 17.

[0036] The working principle of the utility model is:

[0037] The roller table 2 is covered inside by the upper cover 7, the side cover 8, and the lower cover 9, so as to keep the ingot on the roller table 2 warm and prevent the ingot from dropping too much in temperature during transportation, so as to ensure that the temperature of the ingot before entering the rolling mill reaches the direct rolling temperature. At the same time, the upper cover 7 can be opened. When heat preservation is required, the upper cover 7 is extended by the telescopic cylinder 4 to cover the roller table 2. When heat preservation is not required, the upper cover 7 is retracted by the telescopic cylinder 4 to open the upper cover 7 to the motor 3 side. The telescopic cylinder 4 is at a certain distance from the roller table 2 to prevent the telescopic cylinder 4 from being damaged by high temperature. A slag discharge port 10 is arranged on the lower cover body 9, and a flap 12 and a weight box 13 are hinged at the slag discharge port 10. When the oxidized iron scale dropped from the ingot accumulates on the flap 12 and reaches a certain weight, the flap 12 automatically flips downward to discharge the slag. After the oxidized iron scale drops, the flap 12 covers the slag discharge port 10 again under the action of the weight block 14 in the weight box 13, thereby realizing automatic slag discharge and preventing excessive temperature drop during the slag discharge process.

[0038] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention shall fall within the scope of protection of the present invention.

[0039] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A heat preservation cover for a billet continuous casting machine for direct rolling of a billet, comprising a bracket, a roller table is mounted on the bracket, and a plurality of motors are arranged on one side of the roller table, characterized in that: The bracket is hinged with a plurality of telescopic cylinders at one end close to the motor, and the output ends of the telescopic cylinders are hinged with ribs, and a vertical support is hinged at the middle position of the ribs, and an upper cover body is welded to the other end of the ribs. The bracket is fixed with a plurality of side covers on both sides of the roller, and the bracket is fixed with a plurality of lower covers at the bottom end of the roller, and a plurality of slag discharge ports are arranged at the bottom of the lower covers, and a plurality of weight boxes and flaps are welded to the bottom of the slag discharge ports through hinges, and a weight block is filled in the weight box, and a plurality of flaps cover the slag discharge ports.

2. The heat preservation cover for the direct rolling process of the billet continuous casting machine according to claim 1, characterized in that: The rib plate is hinged to the telescopic cylinder and tilted downward and hinged to the vertical support. The bottom end of the vertical support is fixed on the bracket. The rib plate is hinged to the vertical support and extends horizontally to the top of the roller.

3. The heat preservation cover for the direct rolling process of the billet continuous casting machine according to claim 2, characterized in that: The upper cover body is U-shaped, with the U-shaped opening facing downwards. The upper cover body is fixed below the rib plate above the roller, and the lower edge of the upper cover body is attached to the upper ends of the side covers on both sides of the roller.

4. The heat preservation cover for the direct rolling process of the billet continuous casting machine according to claim 3, characterized in that: The upper cover body, side cover body and lower cover body are all sandwich-type heat-insulating covers. The shells of the upper cover body, side cover body and lower cover body are all 304 stainless steel. The cores of the upper cover body and side cover body are aluminum silicate fiber blankets, and the core of the lower cover body is lightweight heat-insulating castable material.

5. The heat preservation cover for direct rolling process of billet continuous casting machine according to claim 3, characterized in that: The upper cover body and the lower cover body are linearly distributed along the roller conveyor direction, and the side cover bodies are linearly distributed on both sides of the roller conveyor.

6. The heat preservation cover for direct rolling process of billet continuous casting machine according to claim 1, characterized in that: The hinge is U-shaped, welded to the lower cover at the slag discharge port, and a connecting plate is hinged in the hinge through a pin shaft penetrating the hinge.

7. The heat preservation cover for the direct rolling process of the billet continuous casting machine according to claim 6, characterized in that: The connecting plate has an obtuse bend in the middle, one end of the connecting plate is welded to the bottom of the flip plate, the other end of the connecting plate is welded to the top of the weight box, and the hinge is welded to the weight box and the flip plate through the connecting plate.

8. The heat preservation cover for the direct rolling process of the billet continuous casting machine according to claim 7, characterized in that: The weight box is a box body with a cavity inside, and the weight block is filled in the inner cavity of the weight box. An opening facing upward is provided on the weight box near the connecting plate for filling the weight block into the weight box through the opening.

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