Tap hole structure of electric arc furnace body

Abstract

The utility model relates to the technical field of electric arc furnace body structures, in particular to an electric arc furnace body tapping hole structure which comprises a furnace body, a plate seat is assembled at the discharging end of the outer side of the furnace body, a batten matched with the plate seat is assembled on the surface of the outer wall of the furnace body, and an electric push rod is assembled at the end, away from the plate seat, of the batten. A discharge port communicated with the discharge end of the furnace body is formed in the plate seat; when the electric arc furnace body is used and the furnace body is inclined, in the process that molten steel is discharged, the V-shaped plate on the surface of the outer wall of the furnace body can contain and guide the molten steel, so that the molten steel can be discharged to a designated position, subsequent machining of the molten steel is facilitated, meanwhile, the lining plate clamped in the V-shaped plate is convenient to disassemble and assemble, and the service life of the electric arc furnace body is prolonged. And the refractory cement layer in the lining plate has good wear resistance and fire resistance, so that the V-shaped plate can guide and convey the molten steel more stably, and the V-shaped plate is convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of the structure of an electric arc furnace body, and particularly relates to a tapping hole structure of an electric arc furnace body. Background Art

[0002] The main advantages of an eccentric bottom tapping (EBT) electric furnace are that it realizes slag-free tapping and increases the usage area of water-cooled furnace walls. Due to the many advantages of the EBT electric furnace, it has been rapidly popularized worldwide. Now, when building an electric furnace, especially an electric furnace combined with external furnace refining, slag-free tapping is definitely required, and EBT is the first choice; Patent No. CN202322892596.8 discloses an eccentric bottom tapping electric arc furnace, which is connected with a moving mechanism at the lower end of the furnace body. The furnace body is moved by the moving mechanism at the lower end of the moving mechanism. After the furnace body is moved out, the furnace body is tilted by the moving mechanism, so that the materials in the furnace body flow out through the tapping pipe; however, since the tapping hole on the outer side of the electric arc furnace body is of an S-shaped structure, this causes some molten steel to easily remain in the S-shaped bend and is quite inconvenient to clean. For this reason, we propose a tapping hole structure of an electric arc furnace body. Summary of the Utility Model

[0003] A tapping hole structure of an electric arc furnace body is provided for the problems in the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is a tapping hole structure of an electric arc furnace body, including a furnace body. A plate seat is assembled at the discharging end on the outer side of the furnace body, and a plate strip adapted to the plate seat is assembled on the outer wall surface of the furnace body. An electric push rod is assembled at one end of the plate strip away from the plate seat, and a discharge port communicating with the discharging end of the furnace body is opened in the plate seat. A baffle fitting the discharge port is assembled at the power output end of the electric push rod;

[0005] A V-shaped plate for guiding materials is integrally formed on the outer wall surface of the plate seat, and a lining plate is clamped in the V-shaped plate. A refractory cement layer is arranged in the lining plate.

[0006] By adopting the above technical solution, when the electric arc furnace body is in use and the molten steel is discharged due to the tilting of the furnace body, the V-shaped plate on the outer wall surface of the furnace body can receive and guide the molten steel, so that the molten steel can be discharged to a designated position, facilitating subsequent processing. At the same time, the lining plate clamped in the V-shaped plate is convenient for disassembly and assembly, and the refractory cement layer in the lining plate has good wear resistance and fire resistance, enabling the V-shaped plate to more stably guide and convey the molten steel, and the V-shaped plate is convenient to clean;

[0007] When processing steel in the electric arc furnace body, it can make the electric push rod at the top of the strip operate. The operation of the electric push rod facilitates the movement of the baffle, enabling the baffle to fit with the discharge port on the outer periphery of the plate seat, facilitating the blocking of the discharge port, reducing the leakage of the temperature inside the furnace body from the discharge port, enabling the furnace body to process steel more stably, and also reducing the automatic discharge of molten steel from the discharge port.

[0008] Specifically, grooves are provided on the inner wall surface of the discharge port, and there are two groups of grooves. On the outer wall surface of the baffle, there are two groups of convex blocks integrally formed and fitted with the grooves.

[0009] By adopting the above technical solution, the convex blocks on the outer wall surface of the baffle fit with the grooves on the inner periphery of the discharge port, facilitating the improvement of the stability when the baffle blocks the discharge port between the plate seat and the furnace body.

[0010] Specifically, a vertical rod inserted with the convex block is assembled between the groove and the strip.

[0011] By adopting the above technical solution, the vertical rod and the convex block are inserted and slidably connected to each other, facilitating the improvement of the stability of the baffle during displacement.

[0012] Specifically, a refractory cloth layer is provided on the outer periphery of the refractory cement layer.

[0013] By adopting the above technical solution, the refractory cloth layer has good fire resistance and lubrication performance, enabling the molten steel to flow more smoothly from the V-shaped plate.

[0014] Specifically, a heat insulation layer is provided on the side of the V-shaped plate close to the inner lining plate.

[0015] By adopting the above technical solution, the heat insulation layer on the surface of the V-shaped plate facilitates the protection of the V-shaped plate, thereby reducing the impact of molten steel on the V-shaped plate and enabling the V-shaped plate to be used more stably.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] 1. Through the design of the plate seat, discharge port, V-shaped plate, inner lining plate and refractory cement layer in the technical solution of the present application, when using the electric arc furnace body and during the process of discharging molten steel due to the inclination of the furnace body, the V-shaped plate on the outer wall surface of the furnace body can catch and guide the molten steel, enabling the molten steel to be discharged to a designated position, facilitating subsequent processing. At the same time, the inner lining plate clamped in the V-shaped plate is convenient for disassembly and assembly, and the refractory cement layer in the inner lining plate has good wear resistance and fire resistance, enabling the V-shaped plate to guide and transport the molten steel more stably, and the V-shaped plate is convenient for cleaning.

[0018] 2. Through the design of the slats, electric push rods, and baffle plates, when the electric arc furnace body processes steel, the electric push rods at the top of the slats can operate. The operation of the electric push rods facilitates the movement of the baffle plates, enabling the baffle plates to fit with the discharge ports on the outer periphery of the plate seats, facilitating the blocking of the discharge ports, reducing the leakage of the temperature inside the furnace body from the discharge ports, enabling the furnace body to process steel more stably, and also reducing the automatic discharge of molten steel from the discharge ports. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0020] Figure 1 is an isometric view of the present utility model;

[0021] Figure 2 is an exploded view of the connection structure between the baffle plate and the plate seat of the present utility model;

[0022] Figure 3 is a schematic plan view of the V-shaped plate structure of the present utility model;

[0023] In the figures: 1, furnace body; 2, plate seat; 3, slat; 4, electric push rod; 5, baffle plate; 6, V-shaped plate; 7, heat insulation layer; 8, inner lining plate; 9, refractory cement layer; 10, refractory cloth layer; 11, groove; 12, convex block; 13, vertical rod; 14, discharge port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the technical means, creative features, achieved purposes, and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Please refer to Figures 1 - 3 , an embodiment of the present utility model provides a technical solution: a steel outlet structure of an electric arc furnace body, including a furnace body 1, a plate seat 2 is assembled at the outer discharge end of the furnace body 1, and a slat 3 adapted to the plate seat 2 is assembled on the outer wall surface of the furnace body 1. An electric push rod 4 is assembled at one end of the slat 3 away from the plate seat 2, and a discharge port 14 communicating with the discharge end of the furnace body 1 is opened in the plate seat 2. A baffle plate 5 adapted to the discharge port 14 is assembled at the power output end of the electric push rod 4; a V-shaped plate 6 for guiding materials is integrally formed on the outer wall surface of the plate seat 2, and an inner lining plate 8 is clamped in the V-shaped plate 6, and a refractory cement layer 9 is provided in the inner lining plate 8.

[0026] During use, when the electric arc furnace body 1 is in use and the furnace body 1 is tilted to discharge the molten steel, the V-shaped plate 6 on the outer wall surface of the furnace body 1 can catch and guide the molten steel, enabling the molten steel to be discharged to a designated position, facilitating subsequent processing. At the same time, the lining plate 8 clamped inside the V-shaped plate 6 is convenient for disassembly and assembly, and the refractory cement layer 9 in the lining plate 8 has good wear resistance and fire resistance, enabling the V-shaped plate 6 to more stably guide and transport the molten steel, and the V-shaped plate 6 is easy to clean;

[0027] When the electric arc furnace body 1 processes steel, it can make the electric push rod 4 at the top of the strip 3 operate. The operation of the electric push rod 4 facilitates the movement of the baffle 5, enabling the baffle 5 to fit with the discharge port 14 on the outer circumference of the plate seat 2, facilitating the blocking of the discharge port 14, reducing the leakage of the temperature inside the furnace body 1 from the discharge port 14, enabling the furnace body 1 to more stably process steel, and at the same time reducing the automatic discharge of molten steel from the discharge port 14.

[0028] As Figure 1 and Figure 2 shown, grooves 11 are provided on the inner wall surface of the discharge port 14, and there are two groups of grooves 11. On the outer wall surface of the baffle 5, convex blocks 12 that fit with the grooves 11 are integrally formed, and there are two groups of convex blocks 12.

[0029] During use, the convex blocks 12 on the outer wall surface of the baffle 5 fit with the grooves 11 on the inner circumference of the discharge port 14, facilitating the improvement of the stability of the baffle 5 when blocking the discharge port 14 between the plate seat 2 and the furnace body 1.

[0030] As Figure 1 and Figure 2 shown, a vertical rod 13 that fits with the convex block 12 is assembled between the groove 11 and the strip 3.

[0031] During use, the vertical rod 13 fits and is slidably connected with the convex block 12, facilitating the improvement of the stability of the baffle 5 during displacement.

[0032] As Figure 1 and Figure 3 shown, a refractory cloth layer 10 is provided on the outer circumference of the refractory cement layer 9.

[0033] During use, the refractory cloth layer 10 has good fire resistance and lubrication performance, enabling the molten steel to flow more smoothly from the V-shaped plate 6.

[0034] As Figure 1 and Figure 3 shown, a heat insulation layer 7 is provided on the side of the V-shaped plate 6 close to the lining plate 8.

[0035] During use, the heat insulation layer 7 on the surface of the V-shaped plate 6 facilitates the protection of the V-shaped plate 6, thereby reducing the impact of molten steel on the V-shaped plate 6 and enabling the V-shaped plate 6 to be used more stably.

[0036] The working principle and usage process of the present utility model: During use, first install the corresponding structural components in appropriate positions. When using the electric arc furnace body 1 and during the process of discharging molten steel due to the inclination of the furnace body 1, the V-shaped plate 6 on the outer wall surface of the furnace body 1 can receive and divert the molten steel, enabling the molten steel to be discharged to a designated position, facilitating subsequent processing. At the same time, the lining plate 8 clamped inside the V-shaped plate 6 is convenient for disassembly and assembly, and the refractory cement layer 9 in the lining plate 8 has good wear resistance and fire resistance, enabling the V-shaped plate 6 to more stably divert and transport the molten steel. With the refractory cloth layer 10 on the outer periphery of the refractory cement layer 9, the molten steel can flow more smoothly from the V-shaped plate 6. At the same time, the top-opening V-shaped plate 6 is convenient for cleaning. Also, when the electric arc furnace body 1 processes steel, the electric push rod 4 at the top of the strip 3 can operate. The operation of the electric push rod 4 facilitates the movement of the baffle 5, enabling the baffle 5 to fit with the discharge port 14 on the outer periphery of the plate seat 2, facilitating the blocking of the discharge port 14, reducing the leakage of the temperature inside the furnace body 1 from the discharge port 14, enabling the furnace body 1 to process steel more stably, and also reducing the automatic discharge of molten steel from the discharge port 14.

[0037] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An electric arc furnace tapping port structure, characterized in that: The invention comprises a furnace body (1), wherein a plate seat (2) is mounted on the outer discharge end of the furnace body (1), and a plate strip (3) matched with the plate seat (2) is mounted on the outer wall surface of the furnace body (1), an electric push rod (4) is mounted on the end of the plate strip (3) away from the plate seat (2), and a discharge port (14) connected with the discharge end of the furnace body (1) is opened in the plate seat (2), and a baffle (5) matched with the discharge port (14) is mounted on the power output end of the electric push rod (4); The outer wall surface of the plate seat (2) is integrally constructed with a V-shaped plate (6) for guiding materials, and an inner lining plate (8) is clamped inside the V-shaped plate (6), and a refractory cement layer (9) is arranged inside the inner lining plate (8).

2. The electric arc furnace body tapping port structure according to claim 1, characterized in that: The inner wall surface of the discharge port (14) is provided with grooves (11), and there are two groups of grooves (11); the outer wall surface of the baffle (5) is integrally constructed with protrusions (12) that fit with the grooves (11), and there are two groups of protrusions (12).

3. The electric arc furnace tapping port structure according to claim 2, characterized in that: A vertical rod (13) which is plugged into the convex block (12) is arranged between the groove (11) and the slat (3).

4. The electric arc furnace tapping port structure according to claim 1, characterized in that: A refractory cloth layer (10) is arranged on the outer periphery of the refractory cement layer (9).

5. The electric arc furnace tapping port structure according to claim 1, characterized in that: A heat insulation layer (7) is provided on one side of the V-shaped plate (6) close to the inner lining plate (8).

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