High-efficiency movable oxygen lance suitable for electric arc furnace

Abstract

This utility model relates to the field of oxygen lance technology for electric arc furnaces, and discloses a high-efficiency movable oxygen lance suitable for electric arc furnaces. It includes an oxygen lance shell, a lance barrel inside the shell, a lance barrel support fitted to the right end of the barrel, a telescopic rod connected to the right end of the inner wall of the shell, the output end of the telescopic rod hinged to the lance barrel support, an inner sliding groove at the top of the middle section of the inner wall of the shell, an inner sliding block sliding on the groove, a support rod hinged to the inner sliding block, and the bottom end of the support rod rotatably connected to the lance barrel support. An outlet is opened on the bottom left side of the shell, a gas pipe is connected to the barrel, and a gas hole for the gas pipe to extend is provided on the top right side of the shell. A base is slidably provided on the bottom of the shell. This utility model allows the lance barrel to extend only when supplying oxygen, and to quickly retract into the shell when not in use via the telescopic rod, avoiding long-term exposure of the lance barrel to heat radiation. By flexibly extending and retracting the lance barrel, its exposure time in the high-temperature environment above the electric arc furnace is reduced, thus protecting the lance barrel.

Description

Technical Field

[0001] This utility model relates to the field of oxygen lance technology for electric arc furnaces, and in particular to a high-efficiency portable oxygen lance suitable for electric arc furnaces. Background Technology

[0002] The oxygen lance in an electric arc furnace is a crucial piece of equipment used to supply oxygen into the furnace during the electric arc furnace steelmaking process. Its core function is to enhance the metallurgical reaction within the furnace by supplying oxygen, thereby accelerating the melting of scrap steel and refining processes such as decarburization and dephosphorization. Currently, the oxygen lance is fixed above the electric arc furnace. The continuous heat radiation above the furnace easily causes oxidation, peeling, and metal creep in the lance tube, requiring frequent replacements in its exposed state, resulting in unnecessary losses.

[0003] Therefore, those skilled in the art urgently need to develop a high-efficiency, portable oxygen lance suitable for electric arc furnaces. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a highly efficient, portable oxygen lance suitable for electric arc furnaces.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency movable oxygen lance suitable for an electric arc furnace, comprising an oxygen lance shell, an oxygen lance barrel disposed inside the oxygen lance shell, a barrel support sleeved on the right end of the barrel, a telescopic rod connected to the right end of the inner wall of the oxygen lance shell, the output end of the telescopic rod being hinged to the barrel support, an inner sliding groove provided at the top of the middle section of the inner wall of the oxygen lance shell, an inner sliding block slidably disposed on the inner sliding groove, a support rod hinged on the inner sliding block, the bottom end of the support rod being rotatably connected to the barrel support, an outlet provided on the bottom left side of the oxygen lance shell, a gas pipe connected to the barrel, a gas hole for the gas pipe to extend from the top right side of the oxygen lance shell, and a base slidably disposed on the bottom of the oxygen lance shell.

[0006] Preferably, the top of the base is provided with a slide rail, and the bottom of the oxygen lance housing is connected to a drive block, which is located inside the slide rail and is slidably connected to the slide rail.

[0007] Preferably, a lead screw is rotatably installed inside the slide rail, the drive block is threadedly connected to the lead screw, and a motor for driving the lead screw to rotate is provided at the right end of the base.

[0008] Preferably, there are multiple drive blocks, and all of the drive blocks are distributed in the right side region of the oxygen lance housing.

[0009] Preferably, a horizontal outer groove is formed through the side wall of the oxygen lance housing, and an outer slider is slidably mounted on the outer groove. The connection between the telescopic rod and the barrel support is connected to the outer slider.

[0010] The beneficial effects of this invention are as follows: the barrel extends only when supplying oxygen, and when not in use, it is quickly retracted into the oxygen lance housing via a telescopic rod, reducing the high-temperature exposure time. Combined with the housing's sealing structure, this prevents the barrel from being subjected to prolonged heat radiation, reducing metal fatigue and oxidation loss. When the lance housing moves to the right, it automatically seals the nozzle, forming a high-temperature resistant sealing layer to prevent hot gas backflow above the electric arc furnace. By flexibly extending and retracting the barrel, its exposure time in the high-temperature environment above the electric arc furnace is reduced, thus protecting the barrel. Attached Figure Description

[0011] Figure 1 This is a diagram showing the internal structure of the oxygen lance housing described in this utility model;

[0012] Figure 2 This is a cross-sectional view showing the connection between the oxygen lance housing and the base of this utility model.

[0013] Figure 3 for Figure 1 Enlarged view of the structure at point A in the middle.

[0014] In the diagram: 1-Oxygen lance housing; 2-Gun barrel; 3-Gun barrel support; 4-Telescopic rod; 5-Gas pipe; 6-Support rod; 7-Inner slide groove; 8-Base; 9-Lead screw; 10-Drive block; 11-Gun outlet; 12-Gas port; 13-Outer slide groove; 14-Outer slider; 15-Motor. Detailed Implementation

[0015] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Example 1

[0019] Please see Figures 1-3 This utility model provides a technical solution: a high-efficiency movable oxygen lance suitable for electric arc furnaces, comprising an oxygen lance shell 1, an oxygen lance shell 1, an oxygen lance shell 1 with an internal tube 2, an oxygen lance shell 1 with a tube support 3 sleeved on the right end of the tube 2, a telescopic rod 4 connected to the right end of the inner wall of the oxygen lance shell 1, the output end of the telescopic rod 4 being hinged to the tube support 3, an inner sliding groove 7 being provided at the top of the middle section of the inner wall of the oxygen lance shell 1, an inner slider being slidably provided on the inner sliding groove 7, a support rod 6 being hinged on the inner slider, the bottom end of the support rod 6 being rotatably connected to the tube support 3, an outlet 11 being provided on the bottom left side of the oxygen lance shell 1, a gas pipe 5 being connected to the tube 2, and a gas hole 12 for the gas pipe 5 to extend from the top right side of the oxygen lance shell 1.

[0020] The barrel support 3 is moved to the left by the telescopic rod 4. As the barrel support 3 moves to the left, the support rod 6 moves together. The top of the support rod 6 moves the inner slider to the leftmost end of the inner slide groove 7. The barrel support 3 then tilts the barrel 2 to the lower left, so that the barrel 2 extends out of the outlet 11 and is connected to the air tube 5 to supply oxygen. When it is time to recover, simply retract the telescopic rod 4 and move the barrel support 3 to the right. The operation is simple and convenient. The extension distance of the telescopic rod 4 controls the tilt angle of the barrel 2, thereby flexibly adjusting the angle and making the oxygen supply more efficient.

[0021] The temperature above the electric arc furnace is high. By flexibly adjusting the use and retraction of the gun barrel 2, the gun barrel 2 is prevented from being exposed to the outside for a long time, thus protecting it.

[0022] Example 2

[0023] Based on Embodiment 1, a base 8 is slidably provided at the bottom of the oxygen lance housing 1, and a slide rail is provided at the top of the base 8. A drive block 10 is connected to the bottom end of the oxygen lance housing 1. The drive block 10 is located in the slide rail and is slidably connected to the slide rail. A lead screw 9 is rotatably provided in the slide rail. The drive block 10 is threadedly connected to the lead screw 9. A motor 15 for driving the lead screw 9 to rotate is provided at the right end of the base 8. There are multiple drive blocks 10, and the multiple drive blocks 10 are distributed in the right side area of ​​the oxygen lance housing 1.

[0024] The motor 15 drives the lead screw 9 to rotate, thereby controlling the horizontal movement of the oxygen lance housing 1. During use, the oxygen lance housing 1 is controlled to move to the left; after use, the oxygen lance housing 1 is controlled to move to the right, thereby blocking the outlet 11 and preventing hot gas from entering.

[0025] Example 3

[0026] Based on Embodiment 2, a horizontal outer groove 13 is provided through the side wall of the oxygen lance housing 1, and an outer slider 14 is slidably provided on the outer groove 13. The connection between the telescopic rod 4 and the barrel support 3 is connected to the outer slider 14.

[0027] When the telescopic rod 4 drives the barrel support 3 to move horizontally, it supports the barrel support 3 by sliding horizontally between the outer slide groove 13 and the outer slider 14, thereby improving the stability of operation.

[0028] The working principle of this utility model is as follows: When in use, the motor 15 drives the lead screw 9 to rotate, thereby controlling the oxygen lance shell 1 to move to the left. The telescopic rod 4 drives the barrel support 3 to move to the left. At the same time, the barrel support 3 moves to the left, and the support rod 6 moves together. The top of the support rod 6 drives the inner slider to move to the leftmost end of the inner slide groove 7. Then, the barrel support 3 drives the barrel 2 to tilt to the lower left, so that the barrel 2 extends out of the outlet 11. The oxygen is delivered through the gas pipe 5 connected to the barrel 2. When it is necessary to recover, simply retract the telescopic rod 4, drive the barrel support 3 to move to the right, and reverse the motor 15 to control the oxygen lance shell 1 to move to the right, thereby blocking the outlet 11 and preventing hot gas from entering.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency portable oxygen lance suitable for electric arc furnaces, characterized in that: The oxygen lance includes an oxygen lance housing (1), inside which is a barrel (2), and a barrel support (3) is sleeved on the right end of the barrel (2). A telescopic rod (4) is connected to the right end of the inner wall of the oxygen lance housing (1). The output end of the telescopic rod (4) is hinged to the barrel support (3). An inner sliding groove (7) is provided at the top of the middle section of the inner wall of the oxygen lance housing (1). An inner sliding block is slidably provided on the inner sliding groove (7). A support rod (6) is hinged on the inner sliding block. The bottom end of the support rod (6) is rotatably connected to the barrel support (3). An outlet (11) is provided on the left side of the bottom of the oxygen lance housing (1). A gas pipe (5) is connected to the barrel (2). An air hole (12) for the gas pipe (5) to extend is provided on the right side of the top of the oxygen lance housing (1). A base (8) is slidably provided on the bottom of the oxygen lance housing (1).

2. The high-efficiency movable oxygen lance suitable for electric arc furnaces according to claim 1, characterized in that: The top of the base (8) is provided with a slide rail, and the bottom of the oxygen gun housing (1) is connected to a drive block (10). The drive block (10) is located in the slide rail and is slidably connected to the slide rail.

3. A high-efficiency movable oxygen lance suitable for electric arc furnaces according to claim 2, characterized in that: A lead screw (9) is rotatably installed inside the slide rail. The drive block (10) is threadedly connected to the lead screw (9). A motor (15) for driving the lead screw (9) to rotate is provided at the right end of the base (8).

4. A high-efficiency movable oxygen lance suitable for an electric arc furnace according to claim 3, characterized in that: The number of drive blocks (10) is multiple, and the multiple drive blocks (10) are distributed in the right side region of the oxygen lance shell (1).

5. A high-efficiency portable oxygen lance suitable for electric arc furnaces according to claim 1, characterized in that: A horizontal outer groove (13) is provided through the side wall of the oxygen lance housing (1), and an outer slider (14) is slidably provided on the outer groove (13). The connection between the telescopic rod (4) and the barrel support (3) is connected to the outer slider (14).

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