Lower furnace shell structure of electric furnace

Abstract

The utility model discloses a lower furnace shell structure of an electric furnace, which comprises a body, the bottom of the body is provided with an arc-shaped part protruding outwards, and the body can swing around a swing shaft; and the steel tapping mechanism comprises a plurality of steel tapping holes which are arranged at intervals in the direction perpendicular to the swing shaft, the steel tapping holes are located in the same side of the swing shaft, and each steel tapping hole is provided with a through hole structure with an opening and closing function. The lower furnace shell structure of the electric furnace is simple in structure, stable and easy to use, and molten steel can be rapidly guided out in batches.

Description

Technical Field

[0001] The utility model relates to a lower furnace shell structure of an electric furnace, belonging to the technical field of smelting equipment. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] Electric furnaces in the smelting field are usually used to heat materials such as molten steel. Compared with fuel furnaces, the materials in the electric furnace are heated quickly, the heating temperature is high, the temperature control is convenient, and the electric furnace is easy to mechanize and automate in the production process, and its output quality is excellent. Therefore, electric furnaces are widely used in the smelting industry.

[0004] The lower furnace shell refers to the lower part of the electric furnace body, which is used to withstand the pressure and temperature in the furnace. When working, it is necessary to use gravity to let the molten steel in the electric furnace flow out through the steel outlet in the lower furnace shell, so as to facilitate the further smelting steps of the finished product. However, in the actual existing working process, it is usually necessary to let the molten steel in the electric furnace flow out in batches, so it is necessary to seal and unseal the steel outlet many times, which is troublesome to operate and affects the efficiency of smelting. At the same time, since the steel outlet structure in the prior art is also relatively complicated, the lower furnace shell is very prone to cracking in the high temperature and high pressure smelting environment, affecting production safety.

[0005] There is no electric furnace lower shell structure that can solve the above problems at present. Utility Model Content

[0006] The utility model aims to provide a lower furnace shell structure of an electric furnace, which has a simple structure, is stable and easy to use, and can realize quick and easy extraction of molten steel in batches.

[0007] In order to achieve the above-mentioned purpose, the utility model discloses the following electric furnace lower shell structure, which includes:

[0008] A body, wherein the bottom of the body has an arc-shaped portion protruding outward, and the body can swing around a swing axis;

[0009] The steel tapping mechanism comprises a plurality of steel tapping ports arranged at intervals in a direction perpendicular to the swing axis, the plurality of steel tapping ports are located on the same side of the swing axis, and each of the steel tapping ports is provided with a through hole structure with an opening and closing function.

[0010] Furthermore, the body can swing around the arc center of the arc portion.

[0011] Furthermore, it also includes a baffle, which is arranged on the top of the main body, one end of the baffle is fixedly connected to the main body, and the baffle includes an escape entrance on one side of the steel discharge mechanism.

[0012] Furthermore, the main body also includes a wall portion, which is arranged at one end of the arc-shaped portion to prevent the swinging molten steel from overflowing from the main body.

[0013] Furthermore, the wall portion is arranged on a side of the main body where the steel tapping mechanism is arranged.

[0014] Furthermore, the bottoms of the plurality of steel outlets are flush, and the body has a protective cover at the bottom of the steel outlet.

[0015] Furthermore, the steel tapping mechanism is arranged at an edge position of the arc-shaped portion.

[0016] Furthermore, the number of the steel tapping ports in the steel tapping mechanism is two.

[0017] By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0018] 1. The lower shell structure of the electric furnace of the utility model has fewer structural parts. With an arc-shaped portion and a steel-out mechanism in the form of a through hole, the molten steel can flow out by the dead weight of the molten steel, thereby ensuring production safety, reducing component costs and facilitating later maintenance.

[0019] 2. The steel tapping mechanism of the lower furnace shell structure of the electric furnace of the utility model includes a plurality of steel tapping ports, so that steel tapping can be achieved in batches only by controlling the swing of the lower furnace shell body, which significantly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 This is a schematic diagram of a full molten steel state of a lower shell structure of an electric furnace provided in an embodiment of this specification;

[0022] Figure 2 This is a schematic diagram of the first steel-tapping state of a lower furnace shell structure of an electric furnace provided in an embodiment of this specification;

[0023] Figure 3 This is a schematic diagram of the second steel-tapping state of a lower furnace shell structure of an electric furnace provided in an embodiment of this specification;

[0024] Figure 4 This is a schematic diagram of a state of discharging clean molten steel of a lower shell structure of an electric furnace provided in an embodiment of this specification;

[0025] In the figure: 1. body; 11. arc-shaped portion; 12. wall portion; 13. protective cover; 2. steel-discharging mechanism; 21. first steel-discharging port; 22. second steel-discharging port; 3. baffle; 4. entrance. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0027] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following describes the implementation method of the present utility model based on its overall structure.

[0028] See also Figures 1 to 4 , is a lower shell structure of an electric furnace in this embodiment, which includes:

[0029] The body 1 has a bottom with an arc-shaped portion 11 protruding outward, and the body 1 can swing around a swing axis;

[0030] The steel tapping mechanism 2 comprises a plurality of steel tapping ports arranged at intervals in a direction perpendicular to the swing axis, the plurality of steel tapping ports are located on the same side of the swing axis, and each steel tapping port is provided with a through hole structure with an opening and closing function.

[0031] With the above structure, when in use, the molten steel in the body 1 can be displaced under the influence of its own weight by swinging the arc portion 11 with the curved arc surface in the body 1 around the swing axis. Figure 1As shown, in this embodiment, there are two steel outlets. When the main body 1 is full of molten steel, the main body 1 is tilted to the first steel outlet position that can cover the top of the first steel outlet 21 and the second steel outlet 22 at the same time. At this time, the first steel outlet 21 with a higher position can be opened, and the molten steel in the main body 1 can flow out from the first steel outlet 21 until the molten steel is discharged. Figure 2 The first steel tapping in this embodiment is completed until the molten steel in the body 1 partially flows out. At this time, the body 1 can be shaken back to the sand adding position, and sand is added to the body 1, and the first steel tapping port 21 is filled with sand to facilitate the second steel tapping. When tapping the steel for the second time, it is only necessary to open the second steel tapping port 22 at a lower position, and tilt the body 1 to the second steel tapping position that can cover the second steel tapping port 22. At this time, the second steel tapping port 22 is opened, and the molten steel in the body 1 can flow out from the second steel tapping port 22 until the second steel tapping is completed. Figure 3 Similarly, after the entire smelting process is completed, the body 1 can be further tilted, and the remaining molten steel in the body 1 can be completely discharged to the outside of the body 1 through the arc portion 11, achieving Figure 4 At the same time, if the next round of smelting needs to be continued, the main body 1 can be swung back to the sand adding position, and sand is added to the main body 1, and the first steel outlet 21 and the second steel outlet 22 are filled with sand at the same time, and then molten steel can be added to the main body 1 until it reaches Figure 1 state, and continue the next round of smelting. In the whole above process, only by setting the two steel outlets in the steel tapping mechanism 2, batch steel tapping can be achieved by only swinging the main body 1 and adding sand, which significantly improves the smelting efficiency. At the same time, the steel tapping mechanism 2 and the arc-shaped portion 11 are simple in structure, easy to maintain and low in cost.

[0032] It is worth noting that in the above process, Figure 1 In the state, the first steel outlet 21 and the second steel outlet 22 in this embodiment can also be opened at the same time to meet the maximum steel output, realize rapid steel output without batches, and flexibly meet the applicable scope of this embodiment. In the technical solution of the present utility model, the swing axis can be a fixed axis, or it can be a movable axis that can be displaced forward and backward along the swing direction of the main body 1. Specifically, in this embodiment, the swing axis is an axis that can move forward and backward, and the main body 1 is mounted on the bar teeth extending along the swing direction of the main body 1. The contact area between the main body 1 and the bar teeth includes a tooth portion matching the bar teeth, and the tooth portion is meshed with the bar teeth. During the swinging process, the main body 1 rolls back and forth on the bar teeth to achieve swinging.

[0033] Furthermore, if Figure 1As shown, the arc portion 11 in the body 1 is set to a regular geometric arc shape. When the arc portion 11 in the body 1 is in an upright state, the opening directions of the first steel outlet 21 and the second steel outlet 22 are perpendicular to the ground.

[0034] Furthermore, a baffle 3 is included, which is arranged on the top of the body 1, one end of the baffle 3 is fixedly connected to the body 1, and the baffle 3 includes an escape entrance 4 on one side of the steel discharge mechanism 2. Specifically, the baffle 3 can be engaged with the upper structure of the electric furnace to form a complete electric furnace structure, and the baffle does not hinder the flow of the swinging molten steel.

[0035] Furthermore, the body 1 further includes a wall portion 12, which is disposed at one end of the arc-shaped portion 11 to prevent the molten steel from overflowing from the body 1 during the swinging. Specifically, the wall portion 12 is disposed on a side of the body 1 where the steel-discharging mechanism 2 is disposed, and the height of the wall portion 12 is convexerting from the height of other structures such as the baffle 3. During use of this embodiment, the swing amplitude of the body 1 toward the side away from the wall portion 12 is larger, so that the molten steel in the body 1 in a full molten steel state can be fully blocked by the wall portion 12 during the swinging process.

[0036] Furthermore, the bottoms of the first steel outlet 21 and the second steel outlet 22 are flush, and the body 1 has a protective cover 13 at the bottoms of the first steel outlet 21 and the second steel outlet 22. Specifically, the first steel outlet 21 and the second steel outlet 22 with flush bottoms are easier to produce, and the matching docking line can also achieve a more stable and controllable docking effect. The length of the protective cover 13 matches the length of the first steel outlet 21 and the second steel outlet 22, and is used to enhance the structural strength of the steel outlet 2, which can effectively extend the life of the steel outlet 2.

[0037] Furthermore, the steel tapping mechanism 2 is arranged at the edge of the arc-shaped portion 11. Specifically, the first steel tapping port 21 at a higher position is close to one side edge of the arc-shaped portion 11. Therefore, even when the body 1 is only slightly swung, a considerable amount of steel can be tapped out of the first batch through the first steel tapping port 21. At the same time, since the first steel tapping port 21 is close to one side edge of the arc-shaped portion 11, Figure 4 As shown, in the process of finally discharging the molten steel, the molten steel in the body 1 that has swung to this state can be completely discharged through the first steel outlet 21 at the lowest point.

[0038] In the above embodiment, the arc portion 11 in the body 1 and the first steel outlet 21 and the second steel outlet 22 in the steel outlet mechanism 2 have simple structures and are easy to prepare and maintain. The above structure can efficiently realize the function of steel outlet in batches, which significantly enhances the smelting efficiency. It is obvious that through the technical solution of the utility model, in some other embodiments, a steel outlet mechanism 2 with three or more steel outlets is also included, so steel outlet in three or more batches can also be realized. However, considering the general use requirements and the structural stability of the body 1, the present embodiment with two openings has a better use effect.

[0039] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A lower shell structure of an electric furnace, characterized in that: include: A body, wherein the bottom of the body has an arc-shaped portion protruding outward, and the body can swing around a swing axis; The steel tapping mechanism comprises a plurality of steel tapping ports arranged at intervals in a direction perpendicular to the swing axis, the plurality of steel tapping ports are located on the same side of the swing axis, and each of the steel tapping ports is provided with a through hole structure with an opening and closing function.

2. The lower shell structure of an electric furnace according to claim 1, characterized in that: It also includes a baffle, which is arranged on the top of the main body, one end of the baffle is fixedly connected to the main body, and the baffle includes an escape entrance on one side of the steel discharge mechanism.

3. The lower shell structure of an electric furnace according to claim 1, characterized in that: The main body further comprises a wall portion, which is arranged at one end of the arc-shaped portion to prevent the swinging molten steel from overflowing from the main body.

4. The lower shell structure of an electric furnace according to claim 3, characterized in that: The wall portion is arranged on a side of the body where the steel tapping mechanism is arranged.

5. The lower shell structure of an electric furnace according to claim 1, characterized in that: The bottoms of the plurality of steel outlets are flush, and the body has a protective cover at the bottom of the steel outlet.

6. The lower shell structure of an electric furnace according to claim 1, characterized in that: The steel tapping mechanism is arranged at an edge position of the arc-shaped portion.

7. The lower shell structure of an electric furnace according to claim 1, characterized in that: The number of the steel tapping ports in the steel tapping mechanism is two.

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