CN217173780U

CN217173780U - Oxygen burning device for electric furnace steel-tapping hole

Info

Publication number: CN217173780U
Application number: CN202220983178.2U
Authority: CN
Inventors: 刘高; 朱兴华; 陈方; 王似宜; 江新军; 周庆子; 魏王亚
Original assignee: Masteel Design & Research Institute Co ltd
Current assignee: Masteel Design & Research Institute Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-08-12
Anticipated expiration: 2032-04-26

Abstract

The utility model discloses an oxygen burning device for an electric furnace steel-tapping hole, belonging to the technical field of oxygen burning operation of metallurgical furnaces. The utility model discloses a burn oxygen device includes pillar, connecting pipe and turns to the subassembly, the connecting pipe erect on the pillar, the one end of this connecting pipe is connected with the oxygen lance, the oxygen lance communicates with the connecting pipe each other, turn to the subassembly and rotate and install on the pillar, the connecting pipe is connected with the pillar through turning to the subassembly, and the connecting pipe uses this subassembly that turns to carry out lever motion as the fulcrum, greatly reduced burns oxygen operator's intensity of labour, and is easy operation, time saving and labor saving, can obviously shorten and burn oxygen operating time, in addition, this angle modulation who burns oxygen device is convenient, be favorable to improving the accuracy nature of burning oxygen operation, reduce the influence of burning oxygen to molten steel quality.

Description

Oxygen burning device for electric furnace steel-tapping hole

Technical Field

The utility model belongs to the technical field of oxygen burning operation of metallurgical furnaces, and more particularly relates to an oxygen burning device for an electric furnace steel-tapping hole.

Background

In the metallurgical industry, electric furnace tapping, ladle casting and the like, if molten steel cannot be self-led, an operator needs to carry out smooth production by oxygen combustion, the oxygen combustion operation is that the oxygen pipe is lifted by two hands of the operator, the length of the oxygen pipe is about 6m, the operator often feels aching and aching in the arm after carrying out one-time oxygen combustion operation, and meanwhile, the molten steel splashes, so that certain safety risk exists. Moreover, the oxygen burning time is too long, which has great harm to the quality of molten steel and can cause quality accidents in serious cases. In recent years, with the great development of electric furnace technology, a large number of electric furnaces such as a horse steel 110t electric furnace, a Yangtze river steel 140t electric furnace and the like are newly built. Compared with a converter, an electric furnace usually adopts an eccentric furnace bottom to tap steel EBT, when smelting is finished, the EBT is opened, flowing sand flows out from a steel tapping hole, and molten steel flows into a steel ladle through the steel tapping hole. When molten steel is cast in a continuous casting process, a sliding water gap below a ladle needs to be opened, drainage sand in the ladle water gap flows out, the molten steel flows into a tundish through the water gap, and if the ladle water gap is not self-drainage, an operator needs to immediately perform oxygen burning operation to ensure stable and smooth casting. The existing manual oxygen burning operation has the advantages that on one hand, the site is in a high-temperature environment, an oxygen pipe is heavy, the labor intensity of operators is greatly increased, and meanwhile, molten steel splashes, so that certain potential safety hazards exist; on the other hand, the quality of the molten steel is obviously deteriorated due to the fact that the oxygen burning time is too long, and quality loss is caused to enterprises.

Through retrieval, the application with the Chinese patent application number of 201822143514.9 discloses an oxygen burning device for cleaning a long nozzle of a ladle, the oxygen burning device in the application comprises a long nozzle holder, a long nozzle clamped on the long nozzle holder and an oxygen burning spray head arranged above a bowl opening of the long nozzle, and the oxygen burning spray head is screwed with an oxygen pipe; the oxygen pipe is connected with an oxygen burning drainage gun, the oxygen burning drainage gun comprises a stainless steel ball valve, an oxygen pipe sleeve and a hose sleeve, the oxygen pipe sleeve and the hose sleeve are respectively welded on valve ports at two ends, and the oxygen pipe is inserted into the oxygen pipe sleeve and is fastened and locked by using a locking bolt; the hose sleeve is connected with an oxygen hose, and the oxygen hose is connected to an oxygen tank; this application can improve work efficiency, and the difficult gas leakage of pipeline. However, the position of the hose sleeve in the application is relatively fixed, so that the hose sleeve is inconvenient to move, and in addition, the oxygen burning device is not suitable for the drainage operation of a ladle nozzle.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

To current oxygen burning operation intensity of labour high, the security low, and the oxygen burning time is wayward, influence the problem of molten steel quality easily, the utility model provides a burn oxygen device for electric stove burns the steel-tapping hole, should burn oxygen device and utilize lever principle, greatly reduced operating personnel's intensity of labour, in addition, this angle modulation who burns oxygen device is convenient, is favorable to improving the accuracy nature of oxygen burning operation, reduces the influence of oxygen burning to molten steel quality, reduces oxygen lance consumption simultaneously, is convenient for maintain.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model discloses a burn oxygen device for electric stove burns steel-tapping hole, including pillar and connecting pipe, the connecting pipe erect on the pillar, the one end intercommunication oxygen lance of this connecting pipe still turns to the subassembly including turning to, turns to the unit mount on the pillar, the connecting pipe is connected with the pillar through turning to the subassembly, and the connecting pipe uses this to turn to the subassembly and carries out lever motion as the fulcrum.

Furthermore, the steering assembly comprises a base and a rotating part, the base is rotatably connected with the supporting column, two lugs are arranged on the base, two ends of the rotating part are respectively erected on the corresponding lugs, and the rotating part rotates by taking the lugs at the two ends as supporting points.

Furthermore, the two ends of the rotating part are provided with rotating shafts, the lug is provided with a first mounting hole for mounting the rotating shaft, and the rotating part is provided with a second mounting hole for the connecting pipe to pass through.

Furthermore, the steering assembly also comprises a first fastening piece, an elastic piece is arranged at the end part of the first fastening piece, and a first fastening hole matched with the first fastening piece is processed on the rotating piece.

Furthermore, the oxygen hose is provided with a control valve, penetrates into the inner cavity of the connecting pipe and is communicated with the oxygen blowing pipe.

Furthermore, a second fastening hole is processed on the connecting pipe, a corresponding second fastening piece is arranged on the second fastening hole, the end part of the oxygen lance is inserted into the connecting pipe, and a sealing layer is arranged on the inner wall of the connecting section of the connecting pipe and the oxygen lance.

Furthermore, one end of the connecting pipe, which is far away from the oxygen lance, is provided with a handle, and the handle comprises a round handle body and a handle arranged on the handle body.

Furthermore, a protection plate is arranged between the handle and the oxygen lance and is vertically fixed on the base, and a through hole for the connecting pipe to pass through is formed in the protection plate.

Furthermore, the support column is fixed on the operating platform through a flange.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a burn oxygen device for electric stove burns steel-tapping hole, the steering subassembly rotates to be installed on the pillar, the connecting pipe is connected with the pillar through the steering subassembly, and the connecting pipe carries out lever motion with this steering subassembly as the fulcrum, greatly reduce and burn oxygen operator intensity of labour, easy operation, labour saving and time saving can obviously shorten and burn oxygen operating time, reduce and burn the influence of oxygen to molten steel quality and production;

(2) the utility model discloses a burn oxygen device for electric stove burns steel-tapping hole, through the further optimal design to turning to subassembly concrete structure, the subassembly that turns to includes base and rotation piece, the base rotates with the pillar to be connected, the rotation piece rotates through the axis of rotation at both ends, the connecting tube accomplishes with the rotation piece through the second mounting hole and is connected, this kind of design, the connecting tube can drive the oxygen lance and carry out the removal on horizontal direction, the vertical direction to and rotate along the axial of connecting tube, in order to aim at the position that needs to burn oxygen, easy operation, swiftly, more accurate oxygen operation has been realized;

(3) the utility model discloses a burn oxygen device for electric stove burns steel-tapping hole, the last control valve that is equipped with of oxygen hose, can carry out more accurate control to the flow of oxygen through this control valve, and the oxygen lance is controlled oxygen through the control valve before counterpointing and is little flow, after counterpointing, increases oxygen flow, realizes fast oxygen burn, and oxygen is closed through the control valve immediately after oxygen burn is accomplished, and furthest reduces and blows in oxygen in the molten steel, reduces the influence of oxygen burn to the molten steel quality; in addition, the arrangement of the second fastening piece can effectively prevent the oxygen lance from shaking due to overlarge airflow pressure and influencing the efficiency of oxygen burning operation; the sealing layer ensures the air tightness of the connection between the oxygen lance and the connecting pipe, and prevents the waste caused by the leakage of oxygen;

(4) the oxygen burning device for the electric furnace steel-tapping hole of the utility model is characterized in that one end of the connecting pipe, which is far away from the oxygen blowing pipe, is provided with a handle, which is convenient for moving the connecting pipe; be equipped with the guard plate between handle and the oxygen lance, the slag steel that splashes when the guard plate can effectively block to burn oxygen has further guaranteed operating personnel's safety.

Drawings

FIG. 1 is a schematic structural view of an oxygen-burning device for an electric furnace steel-tapping hole in the present invention;

FIG. 2 is a schematic structural view of a steering assembly in the oxygen combustion device of the present invention;

FIG. 3 is a schematic view of the fastening of the connecting tube and the rotating member of the present invention;

FIG. 4 is a schematic view of the fastening of the oxygen lance and the connecting tube of the present invention;

fig. 5 is an enlarged view of the handle of the oxygen burning device of the present invention.

In the figure: 1. a pillar; 2. a connecting pipe; 21. a second fastening hole;

3. a steering assembly; 31. a base; 311. a lug; 3111. a first mounting hole; 32. a rotating member; 321. a rotating shaft; 322. a second mounting hole; 323. a first fastening hole; 33. a first fastener; 34. an elastic member;

4. an oxygen lance; 5. an oxygen hose; 51. a control valve; 6. a handle; 61. a handle body; 62. a handle; 7. a protection plate; 8. a flange; 9. a second fastener; 10. and (7) sealing the layer.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

Example 1

As shown in fig. 1, the oxygen-burning device for the electric furnace steel-tapping hole of the present embodiment comprises a support column 1, a connecting pipe 2 and a steering assembly 3, wherein the connecting pipe 2 is erected on the support column 1, and the support column 1 is fixed on an operation platform through a flange 8. The one end of connecting pipe 2 is connected with oxygen lance 4, and oxygen lance 4 communicates with connecting pipe 2 each other, and the other end of connecting pipe 2 is equipped with handle 6, and this handle 6 includes circular shape handle body 61 and the handle 62 of setting on handle body 61, the convenient removal operation to connecting pipe 2. The steering component 3 is arranged on the support column 1, and the connecting pipe 2 is connected with the support column 1 through the steering component 3. The connecting pipe 2 performs lever motion by taking the steering component 3 as a fulcrum, so that the labor intensity of oxygen burning operators is greatly reduced, the operation is simple, time and labor are saved, the oxygen burning operation time can be obviously shortened, and the influence of oxygen burning on the quality and production of molten steel is reduced.

As shown in fig. 2, the turning assembly 3 comprises a base 31 and a turning member 32, the base 31 is rotatably connected to the support column 1, and the turning member 32 is designed to drive the oxygen lance 4 to rotate in the horizontal plane, i.e. the turning member 32 swings left and right with the support column 1 as a supporting point. In addition, two lugs 311 are disposed on the base 31, two ends of the rotating element 32 are respectively erected on the corresponding lugs 311, and the rotating element 32 rotates with the lugs 311 at the two ends as supporting points. Specifically, the two ends of the rotating member 32 are provided with rotating shafts 321, the lug 311 is provided with a first mounting hole 3111 for mounting the rotating shafts 321, and the rotating member 32 is provided with a second mounting hole 322 for the connecting pipe 2 to pass through. Wherein, the internal diameter of second mounting hole 322 is slightly bigger than the external diameter of connecting pipe 2, can guarantee like this that connecting pipe 2 can stretch out and draw back in second mounting hole 322 and remove, and connecting pipe 2 also can carry out axial rotation, and this provides multiple moving means for oxygen lance 4, further makes things convenient for the alignment operation of oxygen lance 4.

The steering assembly 3 further includes a first fastening member 33, an elastic member 34 is disposed at an end of the first fastening member 33, and a first fastening hole 323 matched with the first fastening member 33 is formed in the rotating member 32. Specifically, in the embodiment, the first fastening member 33 is a fastening bolt, the first fastening hole 323 is a threaded hole, the elastic member 34 is an elastic steel sheet, and two ends of the steel sheet are made into right angles, so that the connecting pipe 2 can be flexibly fixed by the fastening bolt, and the connecting pipe 2 can be locked to prevent the connecting pipe 2 from sliding down along the second mounting hole 322 when the connecting pipe is not used; but also reduces the hard extrusion injury of the fastening bolt to the outer surface of the connecting pipe 2.

Referring to fig. 4 and 5, the oxygen burner of the present embodiment further includes an oxygen hose 5, the oxygen hose 5 is provided with a control valve 51, and the oxygen hose 5 penetrates into the inner cavity of the connecting pipe 2 and is communicated with the oxygen lance 4. The second fastening holes 21 are processed on the connecting pipe 2, the second fastening holes 21 are provided with corresponding second fastening pieces 9, and due to the arrangement of the second fastening pieces 9, the situation that the oxygen lance shakes to affect the efficiency of oxygen burning operation due to overlarge airflow pressure can be effectively prevented. The second fastening member 9 is preferably a bolt in this embodiment, and the second fastening hole 21 is a threaded hole, so that the oxygen lance 4 can be rapidly replaced. The end part of the oxygen lance 4 is inserted into the connecting pipe 2, the connecting part of the connecting pipe 2 and the oxygen lance 4 is gradually reduced in pipe diameter, and the oxygen lance is ensured to be in close contact with the oxygen lance. Simultaneously, the inner wall of connecting pipe 2 and oxygen lance 4 linkage segment is equipped with sealing layer 10, and this sealing layer 10 preferred is flexible material, and the leakproofness of connecting between them has been ensured in the setting of sealing layer 10, effectively avoids the gas leakage of oxygen, prevents to cause the waste of oxygen, even takes place to take place to be unexpected because of a large amount of reveals.

In addition, slag steel is easy to splash in the oxygen burning process, and the high-temperature slag steel brings hidden danger to the personal safety of operators. In order to solve the problem, a protection plate 7 is arranged between the handle 6 and the oxygen lance 4, the protection plate 7 is vertically fixed on the base 31, and a through hole for the connecting pipe 2 to pass through is formed on the protection plate 7. Meanwhile, the hole of the protection plate 7 is provided with high-temperature-resistant glass, and an operator can throw the glass on the protection plate 7 to observe the oxygen burning condition in real time.

The specific operation method of the oxygen combustion device in the embodiment is as follows:

(1) oxygen burning preparation is made before oxygen burning operation, and an oxygen hose 5 is connected with an oxygen blowing pipe 4 and locked by a bolt.

(2) Pushing the handle 62 to move the connecting tube 2 forward along the second mounting hole 322, thereby driving the oxygen lance 4 to approach the ladle nozzle; meanwhile, the handle 62 is pressed to drive the rotating part 32 to rotate, the other end of the connecting pipe 2, namely one end provided with the oxygen lance 4, moves upwards, and the oxygen lance 4 is close to a ladle nozzle from the lower part; finally, the handle 62 is rotated, and the connecting pipe 2 rotates axially, so that the oxygen lance 4 is driven to rotate in the vertical direction, and the accurate oxygen burning operation is realized by aligning the nozzle.

(3) Before the oxygen lance 4 is aligned, the oxygen is controlled to be small flow through the control valve 51, after the alignment, the oxygen flow is increased, the rapid oxygen burning is realized, and after the oxygen burning is finished, the oxygen is immediately closed through the control valve 51.

The oxygen burning device for the electric furnace steel-tapping hole greatly reduces the labor intensity of oxygen burning operators by utilizing the lever principle, has good safety performance, is convenient to install and maintain, can reduce oxygen blown into molten steel to the maximum extent, and reduces the influence of oxygen burning on the quality of the molten steel. In addition, the length of the oxygen lance is greatly reduced, which is about 1/3 before modification, so that the consumption of the oxygen lance is greatly reduced, and the oxygen burning cost is further reduced.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a burn oxygen device for electric stove burns tap hole, includes pillar (1) and connecting pipe (2), connecting pipe (2) erect on pillar (1), the one end intercommunication oxygen lance (4) of this connecting pipe (2), its characterized in that: still including turning to subassembly (3), turn to subassembly (3) and install on pillar (1), connecting pipe (2) are connected with pillar (1) through turning to subassembly (3), and connecting pipe (2) use this to turn to subassembly (3) and carry out lever motion as the fulcrum.

2. The oxygen-firing device for an electric furnace-fired tap hole as set forth in claim 1, wherein: the steering assembly (3) comprises a base (31) and a rotating piece (32), the base (31) is rotatably connected with the supporting column (1), two lugs (311) are arranged on the base (31), two ends of the rotating piece (32) are respectively erected on the corresponding lugs (311), and the rotating piece (32) rotates by taking the lugs (311) at the two ends as supporting points.

3. The oxygen-firing device for an electric furnace-fired tap hole as set forth in claim 2, wherein: the two ends of the rotating piece (32) are provided with rotating shafts (321), first mounting holes (3111) for mounting the rotating shafts (321) are processed on the lugs (311), and second mounting holes (322) for the connecting pipes (2) to penetrate through are formed in the rotating piece (32).

4. The oxygen-firing device for an electric furnace-fired tap hole as set forth in claim 3, wherein: the steering assembly (3) further comprises a first fastening piece (33), an elastic piece (34) is arranged at the end of the first fastening piece (33), and a first fastening hole (323) matched with the first fastening piece (33) is machined in the rotating piece (32).

5. The oxygen-firing device for an electric furnace-fired tap hole as set forth in any one of claims 1 to 4, wherein: the oxygen hose (5) is provided with a control valve (51), and the oxygen hose (5) penetrates into the inner cavity of the connecting pipe (2) and is communicated with the oxygen blowing pipe (4).

6. The oxygen-firing device for an electric furnace-fired tap hole as set forth in claim 5, wherein: the connecting pipe (2) is provided with a second fastening hole (21), the second fastening hole (21) is provided with a corresponding second fastening piece (9), the end part of the oxygen blowing pipe (4) is inserted into the connecting pipe (2), and the inner wall of the connecting section of the connecting pipe (2) and the oxygen blowing pipe (4) is provided with a sealing layer (10).

7. The oxygen-firing device for an electric furnace-fired tap hole as set forth in claim 6, wherein: one end of the connecting pipe (2) far away from the oxygen lance (4) is provided with a handle (6), and the handle (6) comprises a circular handle body (61) and a handle (62) arranged on the handle body (61).

8. The oxygen-firing device for an electric furnace-fired tap hole as set forth in claim 7, wherein: the oxygen lance is characterized in that a protection plate (7) is arranged between the handle (6) and the oxygen lance (4), the protection plate (7) is vertically fixed on the base (31), and a through hole for the connecting pipe (2) to pass through is formed in the protection plate (7).

9. The oxygen-firing device for an electric furnace-fired tap hole as set forth in claim 8, wherein: the support column (1) is fixed on the operating platform through a flange (8).