Electric arc furnace convenient to discharge

Abstract

An electric arc furnace facilitating blanking comprises a heating furnace body, a blanking hopper communicated with the interior of the heating furnace body is arranged on a furnace cover on the top of the heating furnace body, and a conical plug located on the same axis as the blanking hopper is arranged in the heating furnace body. The small-diameter end of the conical plug is located in the discharging hopper, in the falling process, materials fall on the conical plug and fall along the conical plug, the conical plug guides the materials, the materials are scattered all around, and uniform discharging is achieved, meanwhile, the discharging hopper is provided with a control assembly for controlling the conical plug to vertically move, and when the control assembly controls the conical plug to move to the highest position, the conical plug moves to the highest position. The outer circle side of the conical plug makes contact with the inner side of the discharging hopper, so that sealing of the discharging hopper can be achieved, loss of a large amount of heat energy is avoided, the control assembly controls the conical plug to vertically move up and down, the range of materials sliding down along the conical plug can be changed, and meanwhile the conical plug can move up and down to avoid blockage of the materials accumulated in the discharging hopper.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to an electric arc furnace with convenient unloading. Background Art

[0002] When an existing electric arc furnace is in use, in order to improve the smelting effect, raw materials and auxiliary smelting materials are added in the middle of the smelting process. In order to facilitate the addition of materials, a feed port is usually set on one side of the electric arc furnace, and the raw materials are allowed to flow into the electric arc furnace through a guide plate installed at the feed port. However, this material guiding method can easily cause the raw materials to fall to one place and cause a large amount of raw materials to accumulate in that place. Excessive accumulation can easily lead to uneven heating of the incoming raw materials, resulting in deviations in their melting time, resulting in uneven quality of the products produced. Utility Model Content

[0003] The utility model aims to provide an electric arc furnace with convenient material feeding, which can realize uniform material feeding and improve the smelting effect.

[0004] In order to solve the deficiencies of the above-mentioned technical problems, the technical solution adopted by the present invention is: an electric arc furnace with convenient unloading, comprising a heating furnace body, a furnace cover on the top of the heating furnace body is provided with a unloading hopper connected with the interior thereof, a conical plug is provided inside the heating furnace body and is coaxial with the unloading hopper, the small diameter end of the conical plug is located in the unloading hopper, a unloading channel for falling materials is formed between the conical plug and the unloading hopper, a control component for controlling the vertical movement of the conical plug is provided above the unloading hopper, and when the conical plug moves to the highest position, the outer circular side of the conical plug contacts the inner side of the unloading hopper.

[0005] As a further optimization of the utility model for an electric arc furnace that is convenient for unloading, the control component is a hydraulic rod, and the large-diameter port of the unloading hopper is provided with a horizontal plate. One end of the hydraulic rod is connected to the lower end surface of the horizontal plate, and the other end of the hydraulic rod is connected to the conical plug.

[0006] As a further optimization of the utility model for an electric arc furnace that is convenient for unloading, the control component includes a positioning horizontal plate, a pulling rope and two fixed pulleys. One end of the positioning horizontal plate is connected to the end face of the large diameter end of the unloading hopper, and the other end of the positioning horizontal plate is located above the conical plug. The two fixed pulleys are arranged in sequence on both sides of the upper end face of the positioning horizontal plate. One end of the pulling rope is connected to the center of the small diameter end of the conical plug, and the other end passes around the two fixed pulleys in sequence and is hung on the outside.

[0007] As a further optimization of the electric arc furnace that is convenient for unloading in the utility model, the wheel frames of the two fixed pulleys are provided with U-shaped limit blocks covering the wheel grooves of the fixed pulleys, and a limit space for the pulling rope to pass through is formed between the U-shaped limit blocks and the fixed pulleys.

[0008] As a further optimization of the electric arc furnace with convenient unloading of the utility model, the rope body of the pulling rope located between the two fixed pulleys is provided with a limit block with a width greater than the limit space.

[0009] As a further optimization of the electric arc furnace with convenient unloading of the utility model, the conical plug is a hollow structure.

[0010] As a further optimization of the utility model for an electric arc furnace that is convenient for unloading, a positioning hook with a hook body facing downward is provided on the outer wall of the lower end of the heating furnace body, and a hanging ring that can cooperate with the positioning hook is provided on the end of the stretching rope away from the conical plug.

[0011] As a further optimization of the electric arc furnace for convenient unloading of the utility model, a plurality of support rods connected to the upper end surface of the heating furnace body are provided on the outer circular side of the unloading hopper.

[0012] The utility model has the following beneficial effects: in the utility model, a conical plug is provided inside the heating furnace body and is coaxial with the lower hopper, and the small-diameter end of the conical plug is located in the lower hopper. During the falling, the material falls on the conical plug and falls along the conical plug. The conical plug guides the material so that the material is scattered around to achieve uniform material discharge. At the same time, the lower hopper is provided with a control component for controlling the vertical movement of the conical plug. When the control component controls the conical plug to move to the highest position, the outer circle side of the conical plug contacts the inner side of the lower hopper, thereby achieving sealing of the lower hopper and avoiding the loss of a large amount of heat energy. The control component controls the vertical movement of the conical plug up and down, which can change the range of the material sliding along the conical plug. At the same time, the up and down movement of the conical plug can avoid clogging of materials accumulated in the lower hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the electric arc furnace of the utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the electric arc furnace of the present invention;

[0015] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at A in the middle;

[0016] Figure numerals: 1. heating furnace body, 2. positioning hook, 3. hanging ring, 4. pull rope, 5. furnace cover, 6. support rod, 7. hook, 8. fixed pulley, 9. U-shaped limit block, 10. lower hopper, 11. positioning ring, 12. conical plug, 13. limit block. DETAILED DESCRIPTION

[0017] The following is a combination of the appended examples of the present invention Figure 1-3 As shown, the technical solutions in the embodiments of the present invention are clearly and completely described.

[0018] Example 1

[0019] This embodiment provides an electric arc furnace with convenient unloading, which is used to uniformly charge the electric arc furnace during smelting to improve product quality. The electric arc furnace in this embodiment is similar to the prior art in that both include a heating furnace body 1, a removable furnace cover 5 is provided at the top opening of the heating furnace body 1, and the furnace cover 5 is provided with a hook 7 for facilitating lifting by a crane. A heating structure is provided within the heating furnace body 1 for heating the interior thereof, and a lower hopper 10 is provided on the furnace cover 5 that is connected to the interior thereof. Material enters the heating furnace body 1 from the lower hopper 10, thereby achieving charging. At the same time, to ensure the fixing of the charging hopper, a plurality of support rods 6 are provided on the outer circumference of the lower hopper 10 and connected to the upper end surface of the heating furnace body 1.

[0020] The difference between this embodiment and the prior art is that: a conical plug 12 is provided inside the heating furnace body 1 and is coaxial with the lower hopper 10. The small diameter end of the conical plug 12 is located inside the lower hopper 10. A material discharge channel is formed between the conical plug 12 and the lower hopper 10 for the material to fall. The material in the lower hopper 10 enters the heating furnace body 1 through the discharge channel. During the falling process, the material falls on the conical plug 12 and falls along the conical plug 12. The conical plug 12 guides the material so that the material is scattered in all directions. At the same time, a control component for controlling the vertical movement of the conical plug 12 is provided above the lower hopper 10. When the conical plug 12 moves to the highest position, the outer circumference of the conical plug 12 contacts the inner side of the lower hopper 10, thereby sealing the lower hopper 10 and preventing the material from falling from the lower hopper 10 when feeding is not required. At the same time, the heating furnace body 1 is sealed to avoid a large amount of heat energy loss. In this embodiment, the control component controls the vertical movement of the conical plug 12 to change the range of the material sliding down the conical plug 12. At the same time, the upward and downward movement of the conical plug 12 can prevent the material accumulated in the lower hopper 10 from being blocked.

[0021] In this embodiment, the control component is a hydraulic rod, and a horizontal plate is provided at the large-diameter end of the lower hopper 10. One end of the hydraulic rod is connected to the lower end surface of the horizontal plate, and the other end of the hydraulic rod is connected to the lower hopper 10. At the same time, in order to reduce the load of the control component, the conical plug 12 is set to a hollow structure.

[0022] Example 2

[0023] The present embodiment provides an electric arc furnace that is convenient for unloading. The structure of the electric arc furnace in this embodiment is similar to most of the structures of the electric arc furnace in Example 1, except that: the control assembly in this embodiment includes a positioning transverse plate 11, a pull rope 4, and two fixed pulleys 7. One end of the positioning transverse plate 11 is connected to the end face of the large diameter end of the unloading hopper 10, and the other end of the positioning transverse plate is located above the conical plug 12. The two fixed pulleys 7 are sequentially arranged on both sides of the upper end face of the positioning transverse plate 11. One end of the pull rope 4 is connected to the center of the small diameter end of the conical plug 12, and the other end passes through the two fixed pulleys 7 in turn and is hung on the outside. The positioning transverse plate 11 fixes the position of the two fixed pulleys 7. The two fixed pulleys 7 are used to reduce the friction of pulling the pull rope 4 and guide the pull rope 4 at the same time. The setting of the pull rope 4 enables the staff to manually control the vertical movement of the conical plug 12. It should be noted here that when the end of the pull rope 4 is hooked to the external fixing part, the conical plug 12 contacts the discharge hopper 10 to achieve sealing of the heating furnace body 1. Only when the end of the pull rope 4 is removed from the external fixing part and the pull rope 4 is pulled down by hand, the discharge channel can be controlled to open.

[0024] In this embodiment, the wheel frames of the two fixed pulleys 7 are each provided with a U-shaped stopper 9 that covers the wheel groove of the fixed pulley 7. A limit space for the pull rope 4 to pass through is formed between the U-shaped stopper 9 and the fixed pulley 7. The U-shaped stopper 9 limits the pull rope 4 that passes around the fixed pulley 7 and prevents the pull rope 4 from falling off the fixed pulley 7.

[0025] In this embodiment, the pull rope 4 is located between the two fixed pulleys 7 and is provided with a positioning block 13 with a width greater than the limiting space. The position of the pull rope 4 is limited by the positioning block, so that the pull rope 4 can fall into the interior of the heating furnace body 1.

[0026] In this embodiment, in order to facilitate the fixing of the pulling rope 4 to the heating furnace body 1, a positioning hook 2 with the hook body facing downward is provided on the lower outer wall. The end of the pulling rope 4 away from the tapered plug 12 is provided with a hanging ring 3 that can cooperate with the positioning hook 2.

[0027] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various modifications or variations within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. An electric arc furnace with convenient unloading, comprising a heating furnace body (1), a furnace cover (5) on the top of the heating furnace body (1) is provided with a unloading hopper (10) communicating with the interior thereof, and characterized in that: A conical plug (12) coaxial with the lower hopper (10) is provided inside the heating furnace body (1), the small-diameter end of the conical plug (12) is located inside the lower hopper (10), and a material discharge channel for materials to fall is formed between the conical plug (12) and the lower hopper (10). A control component for controlling the vertical movement of the conical plug (12) is provided above the lower hopper (10). When the conical plug (12) moves to the highest position, the outer circular side of the conical plug (12) contacts the inner side of the lower hopper (10).

2. The electric arc furnace with convenient unloading according to claim 1, characterized in that: The control component is a hydraulic rod, the large diameter port of the lower hopper (10) is provided with a transverse plate, one end of the hydraulic rod is connected to the lower end surface of the transverse plate, and the other end of the hydraulic rod is connected to the tapered plug (12).

3. The electric arc furnace with convenient unloading according to claim 1, characterized in that: The control assembly comprises a positioning transverse plate (11), a pulling rope (4) and two fixed pulleys (7), one end of the positioning transverse plate (11) is connected to the end face of the large diameter end of the lower hopper (10), the other end of the positioning transverse plate is located above the conical plug (12), the two fixed pulleys (7) are sequentially arranged on both sides of the upper end face of the positioning transverse plate (11), one end of the pulling rope (4) is connected to the center of the small diameter end of the conical plug (12), and the other end passes through the two fixed pulleys (7) in sequence and is hung on the outside.

4. The electric arc furnace with convenient unloading according to claim 3, characterized in that: The wheel frames of the two fixed pulleys (7) are both provided with U-shaped limiting blocks (9) covering the wheel grooves of the fixed pulleys (7), and a limiting space for the pulling rope (4) to pass through is formed between the U-shaped limiting blocks (9) and the fixed pulleys (7).

5. The electric arc furnace with convenient unloading according to claim 4, characterized in that: The rope body of the pulling rope (4) located between the two fixed pulleys (7) is provided with a limiting block (13) having a width greater than the limiting space.

6. The electric arc furnace with convenient unloading according to claim 1, characterized in that: The conical plug (12) is a hollow structure.

7. The electric arc furnace with convenient unloading according to claim 1, characterized in that: The outer wall of the lower end of the heating furnace body (1) is provided with a positioning hook (2) with the hook body facing downward, and the end of the pulling rope (4) away from the conical plug (12) is provided with a hanging ring (3) that can be matched with the positioning hook (2) for hanging.

8. The electric arc furnace with convenient unloading according to claim 1, characterized in that: The outer circumferential side of the lower hopper (10) is provided with a plurality of support rods (6) connected to the upper end surface of the heating furnace body (1).

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