Electric furnace shell cold repair cover

Abstract

This utility model discloses a cold repair cover for an electric furnace shell, including a vertical suction pipe, a negative pressure adsorption device connected to the bottom end of the vertical suction pipe, and a horizontal suction pipe installed at the top end. A suction hood is installed at the end of the horizontal suction pipe. The negative pressure adsorption device sequentially sucks dust through the vertical suction pipe, the horizontal suction pipe, and the suction hood. The beginning end of the horizontal suction pipe is rotatably installed at the top end of the vertical suction pipe. The cold repair cover for the electric furnace shell is installed next to the steelmaking electric furnace, with the suction hood located above the furnace body. The horizontal suction pipe, together with the suction hood, rotates around the vertical suction pipe, covering most of the furnace body and targeting various work points inside the furnace.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking equipment, and in particular to a cold repair cover for an electric furnace shell. Background Technology

[0002] Electric arc furnaces for steelmaking require regular maintenance, which generates a large amount of harmful dust. To address this, the industry commonly uses cold-maintenance hoods on the furnace shell to draw in dust under negative pressure, improving working conditions. However, traditional cold-maintenance hoods lack sufficient coverage for the current large electric arc furnaces and struggle to accurately target specific work points within the furnace. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cold repair cover for an electric furnace shell, which can be aligned with various working points inside the furnace.

[0004] A cold repair cover for an electric furnace shell includes a vertical suction pipe, a negative pressure adsorption device connected to the bottom end of the vertical suction pipe and a horizontal suction pipe installed at the top end, and a suction cover installed at the end of the horizontal suction pipe. The negative pressure adsorption device sequentially sucks dust through the vertical suction pipe, the horizontal suction pipe and the suction cover. The beginning end of the horizontal suction pipe is rotatably installed at the top end of the vertical suction pipe. The horizontal suction pipe and the suction cover rotate around the vertical suction pipe to align with the work point.

[0005] Furthermore, it includes a first driving device, with the beginning end of the transverse suction pipe facing downwards, and is rotatably mounted on the top of the vertical suction pipe via the first driving device.

[0006] Furthermore, the suction hood includes a hood connecting section, which includes a transverse section. The suction hood is specifically rotatably installed at the end of the transverse suction pipe via the beginning of the hood connecting section.

[0007] Furthermore, it includes a second drive mechanism, with the end of the transverse suction pipe facing downwards, and a suction hood is rotatably mounted via the second drive mechanism.

[0008] Furthermore, the driving device includes a driving gear and a rotating gear that mesh with each other; it also includes a motor, wherein the driving gear is driven by the motor to rotate and mesh with the rotating gear to rotate.

[0009] Furthermore, the number of teeth on the rotating gear is greater than that on the driving gear.

[0010] Furthermore, the drive device includes an upper ring and a lower ring that are nested together. The drive gear is specifically fixed on the upper ring, and the rotating gear is specifically fixed on the lower ring. The drive gear is driven by a motor to rotate and mesh with the rotating gear, thereby causing the lower ring to rotate.

[0011] The electric furnace shell cold repair cover of this utility model is installed next to the steelmaking electric furnace. The suction cover is located above the furnace body. The horizontal suction pipe and the suction cover rotate around the vertical suction pipe, which can cover most of the furnace body and target the work points in various parts of the furnace. Attached Figure Description

[0012] Figure 1 This is a 3D view of the cold repair cover for the electric furnace shell.

[0013] Figure 2 This is a side view of the drive mechanism.

[0014] Figure 3 It is a three-dimensional view of the drive mechanism.

[0015] Figure 4 It is a cross-sectional view of the upper and lower rings of the drive device. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments.

[0017] Installed next to the steelmaking electric furnace is such as Figure 1 The electric furnace shell cold repair cover shown includes a vertical suction pipe 1 and a horizontal suction pipe 4. The starting end 41 of the horizontal suction pipe 4 faces downwards and is equipped with a first driving device 31, which rotatably mounts the top of the vertical suction pipe 1. The ending end 42 of the horizontal suction pipe 4 faces downwards and is equipped with a second driving device 32, which rotatably mounts the suction cover 2. Specifically, the suction cover 2 includes a cover connecting section 23, the starting end of which faces upwards and is mounted on the second driving device 32. The operator operates the first driving device 31 to drive the horizontal suction pipe 4, along with the suction cover 2, to rotate around the vertical suction pipe 1, roughly aligning it with the work point inside the furnace. Then, the operator operates the second driving device 32 to drive the cover connecting section 23, along with the suction cover 2, to rotate around the ending end 42, adjusting it to finally achieve precise alignment with the work point inside the furnace. The suction hood 2 rotates around the vertical suction pipe 1, covering a first circular working area with a radius equal to the length of the horizontal suction pipe 4. It also rotates around the end 42 of the horizontal suction pipe 4, covering a second circular working area with a radius equal to the length of the horizontal section 230 of the hood connection section 23. The first working area covers most of the furnace body; the center of the second working area can move along the outer perimeter of the first working area, providing a fine adjustment range to ensure the suction hood 2 is aligned with all working points inside the furnace. A negative pressure adsorption device (not shown in the figure) is connected to the bottom of the vertical suction pipe 1. The negative pressure adsorption device sequentially draws dust generated at the working points through the vertical suction pipe 1, the horizontal suction pipe 4, and the suction hood 2.

[0018] The first drive mechanism 31 and the second drive mechanism 32 adopt the same structure. The structure of the drive mechanism is shown below. Figure 2 , Figure 3This includes the interlocking upper ring 30 and lower ring 36. See Figure 4 The upper ring 30 has an annular protrusion 302, and the lower ring 36 has a corresponding annular groove 362. The annular protrusion 302 is inserted into the annular groove 362, and the upper ring 30 is rotatably fitted onto the lower ring 36 in this structure. The upper ring 30 has a through hole 301, such as... Figure 2 As shown, the motor 35 is fixed on the upper surface of the upper ring 30, and its output shaft passes downward through the through hole 301 and is fixedly connected to the drive gear 33 on the lower surface of the upper ring 30. The rotating gear 34 is fitted and fixed on the lower ring 36 and meshes with the drive gear 33. Its number of teeth is greater than that of the drive gear 33, resulting in a low output speed and a high torque. The two gears 33 and 34 form a speed reduction transmission structure in this way.

[0019] In the first drive device 31, the upper ring 30 is fitted onto the beginning end 41 of the horizontal suction pipe 4, and the lower ring 36 is fitted onto the top end of the vertical suction pipe 1. The motor 35 drives the drive gear 33 to rotate, and the drive gear 33 will rotate around the meshed rotating gear 34, causing the upper ring 30, together with the horizontal suction pipe 4 and the suction cover 2, to rotate around the axis of the rotating gear 34 and the vertical suction pipe 1.

[0020] In the second drive device 32, the upper ring 30 is fitted onto the end 42 of the transverse suction pipe 4, and the lower ring 36 is fitted onto the beginning of the connecting section 23 of the suction hood 2. The motor 35 drives the drive gear 33 to rotate and mesh with the drive gear 34 to rotate, causing the lower ring 36, together with the connecting section 23 and the suction hood 2, to rotate around the end 42 of the transverse suction pipe 4.

Claims

1. A cold repair hood for an electric furnace shell, comprising a vertical suction pipe, a negative pressure adsorption device connected to the bottom end of the vertical suction pipe and a horizontal suction pipe installed at the top end, and a suction hood installed at the end end of the horizontal suction pipe, wherein the negative pressure adsorption device sequentially draws dust through the vertical suction pipe, the horizontal suction pipe and the suction hood, characterized in that: The beginning of the horizontal suction pipe is rotatably installed at the top of the vertical suction pipe. The horizontal suction pipe, together with the suction hood, rotates around the vertical suction pipe to align with the work point.

2. The electric furnace shell cold repair cover according to claim 1, characterized in that: It includes a first driving device, with the beginning end of the horizontal suction pipe facing downwards, and is rotatably mounted on the top of the vertical suction pipe via the first driving device.

3. The electric furnace shell cold repair cover according to claim 1, characterized in that: The suction hood includes a hood connecting section, which includes a transverse section. The suction hood is rotatably installed at the end of the transverse suction pipe via the beginning of the hood connecting section.

4. The electric furnace shell cold repair cover according to claim 3, characterized in that: It includes a second drive device, with the end of the transverse suction pipe facing downwards, and a suction hood is rotatably mounted via the second drive device.

5. The electric furnace shell cold repair cover according to claim 2 or 4, characterized in that: The driving device includes a driving gear and a rotating gear that mesh with each other; It includes a motor, and the drive gear is driven by the motor to rotate and mesh with the rotating gear.

6. The electric furnace shell cold repair cover according to claim 5, characterized in that: The number of teeth on the rotating gear is greater than that on the driving gear.

7. The electric furnace shell cold repair cover according to claim 5, characterized in that: The drive mechanism includes an upper ring and a lower ring that are nested together. The drive gear is specifically fixed on the upper ring, and the rotating gear is specifically fixed on the lower ring. The drive gear is driven by a motor to rotate and mesh with the rotating gear, which in turn drives the lower ring to rotate.

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