Steel furnace oxygen blowing device

Abstract

The utility model provides an oxygen blowing device for a steel furnace. One end of a pipe body is an air inlet end, and the other end of the pipe body is an air blowing end; the air guide hose is detachably connected to the air inlet end of the pipe body; the locking mechanism is assembled at the blowing end of the pipe body along a radial thread so as to lock the outer wall of the oxygen burning pipe along the radial direction after the oxygen burning pipe is sleeved at the blowing end; the handles are distributed on the outer wall of the pipe body. The detachable oxygen burning pipe is arranged at the front end of the pipe body, so that the oxygen burning pipe can be rapidly replaced according to needs, the heat-resistant rubber sleeve is arranged at the step table between the oxygen burning pipe and the pipe body, heat conduction between the oxygen burning pipe and the pipe body is reduced, it is guaranteed that the temperature of the pipe body cannot be increased excessively in the holding process, and the operation risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen supply for steel furnaces, and particularly relates to an oxygen blowing device for steel furnaces. Background Art

[0002] In steel smelting, the long nozzle is a device connecting the ladle and the tundish during continuous casting operation. Due to the splashing and residue of molten steel, it needs to be processed in time to ensure the smooth steel flow. Currently, the main cleaning method is to perform oxygen burning operation during the gap of changing the ladle. The oxygen burning operation is mainly carried out by workers holding a bent oxygen burning pipe and inserting it into the inner wall of the long nozzle, and blowing oxygen along the inner wall for one week. Since the oxygen burning pipe is exposed to the high temperature of molten steel after being inserted into the ladle, the service life of the oxygen burning pipe is short, so it needs to be frequently replaced, resulting in low production efficiency and increased costs. In addition, due to the high heat conductivity of the oxygen blowing pipe, the holding part will quickly heat up, and there is a certain operation risk for the operator.

[0003] Therefore, it is necessary to provide an improved technical solution for the above-mentioned deficiencies of the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art, and the utility model provides an oxygen blowing device for steel furnaces.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An oxygen blowing device for steel furnaces, comprising:

[0007] A pipe body, one end of the pipe body is an air inlet end, and the other end is an air blowing end;

[0008] An air guiding hose, which is connected to the air inlet end of the pipe body in a detachable manner;

[0009] A locking mechanism, which is threadedly assembled in the air blowing end of the pipe body along the radial direction to lock the outer wall of the oxygen burning pipe along the radial direction after the oxygen burning pipe is sleeved at the air blowing end;

[0010] A handle, and a plurality of the handles are distributed on the outer wall of the pipe body.

[0011] Preferably, a stepped platform corresponding to the oxygen burning pipe is arranged in the inner cavity of the air blowing end, the stepped platform extends to the side of the locking mechanism away from the oxygen burning pipe, and a sealing sleeve corresponding to the end of the oxygen burning pipe is arranged at the end of the stepped platform.

[0012] Preferably, the sealing sleeve is a conical heat-resistant rubber sleeve, the end corresponding to the oxygen burning pipe is the smaller end, and a conical opening corresponding to the smaller end of the sealing sleeve is arranged at the end of the oxygen burning pipe.

[0013] Preferably, the locking mechanism is a bolt, and a handle is provided at one end of the bolt located outside the pipe body.

[0014] Preferably, the handle is in a plate-like structure, and its side extends along the generatrix of the pipe body and is fixed by welding.

[0015] Preferably, an annular baffle corresponding to the air guiding hose is provided on the pipe body, and an annular flange protruding outward is provided at one end of the air guiding hose corresponding to the pipe body;

[0016] A locking cover is sleeved on the air guiding hose. A hollow corresponding to blocking the annular flange is provided in the middle of the locking cover, and an internal thread for threaded assembly on the outside of the annular baffle is provided at the end.

[0017] Beneficial effects: A detachable oxygen-burning pipe is provided at the front end of the pipe body, so that the oxygen-burning pipe can be quickly replaced as needed. A heat-resistant rubber sleeve is provided at the stepped platform between the oxygen-burning pipe and the pipe body, thereby reducing the heat conduction between the oxygen-burning pipe and the pipe body, ensuring that the pipe body will not overheat during the holding process, and reducing the operation risk. Brief Description of the Drawings

[0018] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0019] Figure 1 It is a structural schematic diagram of the oxygen-blowing device in the specific embodiment provided by the present invention.

[0020] In the figure: 1, pipe body; 2, handle; 3, bolt; 4, oxygen-burning pipe; 5, annular baffle; 6, heat insulation layer; 7, sealing sleeve; 8, air guiding hose; 9, locking cover; 10, annular flange. Detailed Description of the Embodiments

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0022] In the description of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0024] As Figure 1 shown, a steel furnace oxygen blowing device includes a pipe body 1, a gas guiding hose 8, a locking mechanism, and a handle 2. The pipe body 1 has a certain length, specifically, the length can be 1 - 1.5 m for the operator to hold and operate. The pipe body 1 is a hollow metal pipe. One end of the pipe body 1 is an air inlet end, and the other end is a blowing end. The air inlet end is connected to an oxygen supply machine through the gas guiding hose 8, and the blowing end is detachably connected to an oxygen burning pipe 4 so that the oxygen burning pipe 4 can be replaced as needed. The gas guiding hose 8 is detachably connected to the air inlet end of the pipe body 1; the locking mechanism is threadedly assembled in the blowing end of the pipe body 1 in the radial direction. The blowing end is sleeved outside the oxygen burning pipe 4, and the locking mechanism can extend radially into the pipe body 1 to lock the outer wall of the oxygen burning pipe 4 in the radial direction after the blowing end is sleeved on the oxygen burning pipe 4; a plurality of handles 2 are distributed on the outer wall of the pipe body 1. There can be two handles 2, and the two handles 2 are staggered at 60 - 90° in the circumferential direction of the pipe body 1. The two handles 2 have a certain distance in the axial direction of the pipe body 1, for example, 30 - 50 cm. The two handles 2 are close to the air inlet end, so that quick grasping can be performed at multiple angles during the oxygen blowing operation.

[0025] In an alternative embodiment, a stepped platform corresponding to the oxygen burning pipe 4 is provided in the inner cavity of the blowing end. The oxygen burning pipe 4 is sleeved through the increased part of the inner hole at the front end of the stepped platform. An insulating layer 6 is provided in this part. The insulating layer 6 is an insulating material to prevent the heat on the oxygen burning pipe 4 from being conducted to the pipe body 1 and reduce heat conduction. The stepped platform extends to the side of the locking mechanism away from the oxygen burning pipe 4, so that the locking mechanism can lock the oxygen burning pipe 4. A sealing sleeve 7 corresponding to the end of the oxygen burning pipe 4 is provided at the end of the stepped platform to ensure the sealing performance at the docking position and prevent oxygen from overflowing from this place during oxygen blowing.

[0026] In an alternative embodiment, the sealing sleeve 7 is a conical heat-resistant rubber sleeve. The larger end of the sealing sleeve 7 is provided with a columnar end corresponding to the stepped platform, and the end corresponding to the oxygen-burning tube 4 is the smaller end. A conical opening corresponding to the smaller end of the sealing sleeve 7 is provided at the end of the oxygen-burning tube 4. Thus, when the oxygen-burning tube 4 squeezes the sealing sleeve 7, a seal is formed through the conical surfaces of the two. A central hole is provided in the middle of the sealing sleeve 7, so as not to affect the actual oxygen blowing operation. Further, the locking mechanism is a bolt 2. A radial screw hole corresponding to the bolt 2 is provided on the pipe body 1. A handle is provided at one end of the bolt 2 outside the pipe body 1, so that the oxygen-burning tube 4 can be quickly docked through the handle.

[0027] In an alternative embodiment, the handle 2 is a plate-like structure, and its side extends along the generatrix of the pipe body 1 and is fixed by welding. During actual use, when long-term oxygen blowing is required, it can be blocked and hung on the end of the ladle through the baffle, so that there is no need to always hold the pipe body 1.

[0028] In an alternative embodiment, an annular baffle 5 corresponding to the air guide hose 8 is provided on the pipe body 1. The annular baffle 5 is fixed to the pipe body 1 by welding. An annular flange 10 protruding outward is provided at one end of the air guide hose 8 corresponding to the pipe body 1. A locking cover 9 is sleeved on the air guide hose 8. The locking cover 9 is a metal structure. A hollow corresponding to blocking the annular flange 10 is provided in the middle of the locking cover 9, and an internal thread for threaded assembly on the outside of the annular baffle 5 is provided at the end. Rotating the locking cover 9 can drive the annular flange 10 to squeeze forward against the annular baffle 5, and then the installation of the air guide hose 8 and the pipe body 1 is realized by extrusion.

[0029] In an alternative embodiment, the handle 2 is slidably assembled on the pipe body 1. Specifically, the handle 2 is fixed on a sliding sleeve, and the sliding sleeve is slidably assembled on the pipe body 1. In this way, the position of the handle 2 can be adjusted according to the personal working habits of the operator. A stud is provided on the sliding sleeve and is threadedly assembled along its radial direction. After the stud extends into the sliding sleeve, it is locked on the outer wall of the pipe body 1.

[0030] In this embodiment, a chute extending along the generatrix is provided on the outer diameter of the sealing sleeve 7. Correspondingly, a rib is provided on the inner wall in front of the stepped platform, and a rib corresponding to the chute is provided on the inner wall of the conical opening. In this way, the oxygen-burning tube 4 and the pipe body 1 can rotate relative to each other.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are within the scope of the claims of the present invention awaiting approval.

Claims

1. A steel furnace oxygen blowing device, characterized in that: include: A tube body, one end of which is an air inlet end and the other end of which is an air blowing end; An air guide hose, the air guide hose is detachably connected to the air inlet end of the tube body; A locking mechanism, wherein the locking mechanism is threadedly assembled on the blowing end of the tube body along a radial direction, so as to radially lock the outer wall of the oxygen burning pipe after the oxygen burning pipe is sleeved on the blowing end; A handle, wherein a plurality of the handles are distributed on the outer wall of the tube body; a stepped platform corresponding to the oxygen burning tube is provided in the inner cavity of the blowing end, the stepped platform extends to the side of the locking mechanism away from the oxygen burning tube, and a sealing sleeve corresponding to the end of the oxygen burning tube is provided at the end of the stepped platform; the sealing sleeve is a conical heat-resistant rubber sleeve, and the end corresponding to the oxygen burning tube is the smaller end, and a conical mouth corresponding to the smaller end of the sealing sleeve is provided at the end of the oxygen burning tube.

2. The oxygen blowing device for a steel furnace according to claim 1, characterized in that: The locking mechanism is a bolt, and a handle is provided at one end of the bolt placed outside the tube body.

3. The oxygen blowing device for a steel furnace according to claim 1, characterized in that: The handle is a plate-like structure, and the side portion thereof extends along the generatrix of the tube body and is fixed by welding.

4. The oxygen blowing device for a steel furnace according to claim 1, characterized in that: The tube body is provided with an annular baffle corresponding to the air guide hose, and the air guide hose is provided with an annular flange protruding outward at one end corresponding to the tube body; A locking cover is sleeved on the air guide hose, a hollow portion is provided in the middle of the locking cover for correspondingly blocking the annular flange, and an internal thread is provided at the end thereof for threaded assembly on the outside of the annular baffle.

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