Hot-metal bottle cover with clamping groove structure

Abstract

The utility model provides a hot-metal ladle lid with a clamping groove structure, which comprises two lid body assemblies symmetrically arranged on the side portion of a hot-metal ladle, each lid body assembly comprises a first lid body, a second lid body is arranged on the lateral lower portion of each first lid body, a first sliding block is arranged at the bottom of each first lid body, a first sliding groove is formed in the position, corresponding to each first sliding block, of each second lid body, and a second sliding groove is formed in the position, corresponding to each first sliding block, of each second lid body. The first cover body is provided with a first sliding block and is in sliding connection with the first sliding block, a third cover body is arranged below the side of the second cover body, a second sliding block is arranged at the bottom of the second cover body, a second sliding groove is formed in the position, corresponding to the second sliding block, of the third cover body and is in sliding connection with the second sliding block, and springs are arranged on the side portions of the first cover body, the second cover body and the third cover body. By means of the three-layer structural design of the tank cover, it is guaranteed that the molten iron tank cover is gradually closed when the blast furnace tapping flow is small, contact between molten iron in the molten iron tank and air is reduced by increasing the area of the molten iron tank cover, the temperature of the molten iron is effectively kept, and heat loss is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of iron and steel smelting, and relates to a hot metal ladle cover with a clamping groove structure. Background Art

[0002] The ironmaking process refers to charging iron-containing raw materials, fuels and other auxiliary raw materials into a blast furnace from the top of the blast furnace in a certain proportion. The hot blast stove blows hot air into the blast furnace along the tuyeres around the lower part of the blast furnace to assist the coke combustion. At high temperatures, carbon monoxide and hydrogen generated by the combustion of carbon in the coke with oxygen in the blown air. At the same time, the raw materials and fuels descend as the smelting process in the furnace progresses, and heat transfer, reduction, melting, and decarburization reactions occur successively to produce pig iron. The molten iron at the bottom of the furnace flows out intermittently and is loaded into a hot metal ladle, and then transported to the steelmaking workshop.

[0003] During the process of tapping iron from the blast furnace, since the supply of molten iron from the blast furnace production to the steelmaking workshop is intermittent, the hot metal ladle needs to wait for a certain period of time during the process of receiving molten iron, generally 30 - 120 minutes, and sometimes even longer. During this period, since the hot metal ladle is in an open state, the molten iron in the hot metal ladle has a large contact area with the air, resulting in an increase in heat loss.

[0004] Most of the existing hot metal ladle covers only add a cover-opening and closing structure during the transportation of the hot metal ladle to achieve the heat preservation effect. Some hot metal ladle cars with a cover-opening and closing structure require a large space when in use, and the existing cover-opening and closing devices are too complex and prone to deformation in a high-temperature environment.

[0005] The retrieved comparative document 1 is a Chinese invention patent application document "A multifunctional cover-opening and closing hot metal ladle car" (application number: CN202211099378.2), which is used to cover and uncover the top of the hot metal ladle during the transportation of the hot metal ladle. The main method is to set scissor lifts on both sides of the hot metal ladle car and perform the cover operation by translating the sector-shaped hot metal ladle cover. This method can only perform the cover operation during the transportation of the hot metal ladle;

[0006] The retrieved comparative document 2 is a Chinese utility model patent "A cover-opening and closing device for a hot metal ladle with strong sealing performance" (application number: CN202222952012.7 3N202222952012.7), which is used for multi-layer sealing of the top of the hot metal ladle to improve the sealing effect and thus reduce heat loss. However, due to the overly complex design of its hot metal ladle cover, it is difficult to resist the high-temperature deformation caused by the molten iron in a high-temperature environment. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a hot metal ladle cover with a clamping groove structure for the problems existing in the prior art, and solve the problem that the hot metal ladle opening is in an open state during the process of receiving molten iron from the blast furnace, resulting in a large contact area between the molten iron and the air and excessive heat loss.

[0008] To this end, the present utility model adopts the following technical solutions:

[0009] A ladle cover with a slot structure includes two cover body components symmetrically arranged on the side of the ladle; each cover body component includes a first cover body, a second cover body is provided below the side of the first cover body, and a first slider is provided at the bottom of the first cover body. A first chute corresponding to the first slider is provided at the position of the second cover body, and they are slidably connected. A third cover body is provided below the side of the second cover body, and a second slider is provided at the bottom of the second cover body. A second chute corresponding to the second slider is provided at the position of the third cover body, and they are slidably connected. A third slider is provided at the bottom of the third cover body, and a third chute is provided below the third slider, and they are slidably connected. Springs are provided on the sides of the first cover body, the second cover body and the third cover body. A baffle is provided on the side of the cover body component, and the other end of the spring is connected to the baffle. A rope body is also provided on the side of the third cover body, and the other end of the rope body is connected to a winch.

[0010] Further, both the first cover body and the second cover body are in a semi-circular ring shape, and the third cover body is in a square shape; specifically, the inner diameter of the second cover body is exactly equal to the outer diameter of the first cover body.

[0011] Further, a triangular support frame is provided below the third cover body, and the triangular support frame is fixed on both sides of the ladle; specifically, the winch is fixed inside the triangular support frame.

[0012] Further, the thicknesses of the first cover body, the second cover body and the third cover body are all 5 - 10 cm.

[0013] Further, the first cover body, the second cover body and the third cover body are all made of refractory fiber.

[0014] The beneficial effects of the present utility model are as follows:

[0015] The present utility model is provided with multiple cover body components on the ladle for heat preservation. The cover body components are symmetric on both sides and have a three-layer ladle cover structure, which can ensure that the ladle cover is gradually closed when the iron tapping flow from the blast furnace is small, and the contact between the molten iron in the ladle and the air is reduced by increasing the area of the ladle cover. The structure of the present utility model is simple, can resist high-temperature deformation during the iron tapping process, effectively maintain the temperature of the molten iron, and reduce heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic side view structure diagram of the present utility model;

[0017] Figure 2 It is a schematic connection structure diagram between several sliders and chutes in the present utility model;

[0018] Figure 3 It is a top view structural schematic diagram of the present utility model;

[0019] Figure 4 It is a structural schematic diagram of the first cover body, the second cover body and the third cover body in the present utility model.

[0020] In the figure, 1 - the first cover body, 1a - the first slider, 1b - the first chute, 2 - the second cover body, 2a - the second slider, 2b - the second chute, 3 - the third cover body, 3a - the third slider, 3b - the third chute, 4 - the spring, 5 - the rope body, 6 - the winch, 7 - the triangular support frame, 8 - the baffle. Specific embodiments

[0021] The following combines the accompanying drawings and the implementation method to make relevant explanations for the technical solution of the present utility model.

[0022] As Figures 1 to 3 shown, a ladle cover with a card slot structure includes two cover body assemblies symmetrically arranged on the side of the ladle.

[0023] The cover body assembly includes a first cover body 1. A second cover body 2 is provided below the side of the first cover body 1, and a first slider 1a is provided at the bottom of the first cover body 1; a first chute 1b is provided at the position of the second cover body 2 corresponding to the first slider 1a, and it is slidably connected to the first slider 1a. A third cover body 3 is provided below the side of the second cover body 2, and a second slider 2a is provided at the bottom of the second cover body 2; a second chute 2b is provided at the position of the third cover body 3 corresponding to the second slider 2a, and it is slidably connected to the second slider 2b; a third slider 3a is provided at the bottom of the third cover body 3, and a third chute 3b is provided below the third slider 3a, and the two are slidably connected.

[0024] Springs 4 are provided on the sides of the first cover body 1, the second cover body 2 and the third cover body 3. A baffle 8 is provided on the side of the cover body assembly, and the other end of the spring 4 is connected to the baffle 8. A rope body 5 is further provided on the side of the third cover body 3, and the other end of the rope body 5 is connected to the winch 6; specifically, the rope body 5 is made of steel wire rope.

[0025] As Figure 4 shown, both the first cover body 1 and the second cover body 2 are in a semi-circular ring shape, the third cover body 3 is in a square shape, and all three are made of refractory fiber; among them, the inner diameter of the second cover body 2 is exactly equal to the outer diameter of the first cover body 1, and the thicknesses of the first cover body 1, the second cover body 2 and the third cover body 3 are all 5 - 10 cm; specifically, the outer diameter of the first cover body 1 is 10% - 20% larger than the open diameter of the ladle cover, and the inner diameter is 30% - 35% of the open diameter of the ladle cover; the outer diameter of the second cover body 2 is 65% - 75% of the open diameter of the ladle to be covered, and the inner diameter is 30% - 40% of the open diameter of the ladle cover; the width of the third cover body 3 is 20% - 40% of the open diameter of the ladle to be covered.

[0026] In addition, a triangular support frame 8 is provided below the third cover body 3. The triangular support frame 8 is fixed on both sides of the ladle, and the hoist 6 is fixed inside the triangular support frame 8.

[0027] The use process of the utility model is as follows:

[0028] When the cover of the ladle needs to be removed, the hoist 6 moves in the reverse direction to retract the rope body 5, driving the third cover body 3 to move away from the ladle. At the same time, through the card slot structure among the three, the first cover body 1 and the second cover body 2 move in the same direction. During the movement of the three, the three springs 4 behind them are compressed at the same time. While generating compressive deformation, the springs 4 accumulate elastic potential energy.

[0029] When the ladle needs to be covered, the hoist 6 releases the rope body 5. At this time, the spring connected to the third cover body 3 releases elastic potential energy, pushing the third cover body 3 to move forward. At the same time, the springs 4 connected to the first cover body 1 and the second cover body 2 continue to release elastic potential energy. The spring 4 connected to the first cover body 1 returns to its natural state. After releasing all the elastic potential energy, it pushes the first cover body 1 above the open mouth of the ladle, realizing partial covering of the open mouth of the ladle; since the spring connected to the second cover body 2 is longer than that of the first cover body 1 in the relaxed state, after the elastic potential energy of the spring connected to the first cover body 1 is released, the spring connected to the second cover body 2 still retains a part of the elastic potential energy. Continuing to release the steel wire rope, the spring 4 connected to the second cover body 2 can continue to push the second cover body 2 forward until the elastic potential energy of the spring connected to the second cover body 2 is released. Until the spring 4 structure connected to the third cover body 3 returns to its natural state, the third cover bodies 3 on both sides of the ladle are closed, thus completing the process of covering the ladle.

Claims

1. A molten iron tank cover with a slot structure, characterized in that: It includes two cover assemblies symmetrically arranged on the sides of the molten iron ladle; The cover assembly comprises a first cover (1), a second cover (2) is provided at the lower side of the first cover (1), a first slider (1a) is provided at the bottom, a first slide groove (1b) is provided at a position of the second cover (2) corresponding to the first slider (1a), and the first slide groove (1b) is slidably connected to the first slider (1a), a third cover (3) is provided at the lower side of the second cover (2), a second slider (2a) is provided at the bottom, a second slide groove (2b) is provided at a position of the third cover (3) corresponding to the second slider (2a), and the second slide groove (2b) is slidably connected to the second slider (2a), a third slider (3a) is provided at the bottom of the third cover (3), a third slide groove (3b) is provided at the bottom of the third slider, and the two are slidably connected; The first cover body (1), the second cover body (2) and the third cover body (3) are all provided with springs (4) on their sides, the cover body assembly is provided with a baffle (8) on its side, the other end of the spring (4) is connected to the baffle (8), the third cover body (3) is also provided with a rope (5) on its side, the other end of the rope (5) is connected to a winch (6).

2. The molten iron tank cover with a slot structure according to claim 1, characterized in that: The first cover body (1) and the second cover body (2) are both in the shape of a semicircular ring, and the third cover body (3) is in the shape of a square.

3. The molten iron tank cover with a slot structure according to claim 2, characterized in that: The inner diameter of the second cover body (2) is exactly equal to the outer diameter of the first cover body (1).

4. The molten iron tank cover with a slot structure according to claim 1, characterized in that: A triangular support frame (7) is provided below the third cover body (3).

5. The molten iron tank cover with a slot structure according to claim 4, characterized in that: The hoist (6) is fixed inside the triangular support frame (7).

6. The molten iron tank cover with a slot structure according to claim 1, characterized in that: The thickness of the first cover body (1), the second cover body (2) and the third cover body (3) are all 5 to 10 cm.

7. The molten iron tank cover with a slot structure according to claim 1, characterized in that: The first cover body (1), the second cover body (2) and the third cover body (3) are all made of fire-resistant fibers.

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