CN218951428U - Furnace door oxygen gun head - Google Patents

Furnace door oxygen gun head Download PDF

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Publication number
CN218951428U
CN218951428U CN202222512321.2U CN202222512321U CN218951428U CN 218951428 U CN218951428 U CN 218951428U CN 202222512321 U CN202222512321 U CN 202222512321U CN 218951428 U CN218951428 U CN 218951428U
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China
Prior art keywords
pipe
oxygen
nozzle
wall
head
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Active
Application number
CN202222512321.2U
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Chinese (zh)
Inventor
李国丰
刘彬鑫
白福猛
吴林琦
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Tianjin Fufeng Environmental Protection Technology Co ltd
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Tianjin Fufeng Environmental Protection Technology Co ltd
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Priority to CN202222512321.2U priority Critical patent/CN218951428U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

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Abstract

The utility model discloses an oxygen gun head of a furnace door, which comprises a spray head, wherein the tail end of the spray head is connected with an outer wall pipe, a main oxygen pipe is arranged in the outer wall pipe, the front end of the main oxygen pipe is connected with a threaded pipe obliquely arranged in the spray head, threads are arranged at the middle upper part of the inner wall of the threaded pipe, a mounting table is formed by reducing the diameter of the threaded pipe below the threads, a nozzle is movably mounted on the mounting table through the threads, and a second sealing ring is arranged between the bottom wall of the nozzle and the mounting table. The furnace door oxygen lance head is provided with the replaceable nozzle, and only the nozzle can be replaced after the lance head end is damaged, so that the production cost is reduced, the maintenance is convenient, and the overall service life of the furnace door oxygen lance head is prolonged. In addition, the oxygen gun head of the furnace door is made of stainless steel, so that the cost is low, and the stainless steel gun head is easy to weld with the rear gun body and is not easy to crack.

Description

Furnace door oxygen gun head
Technical Field
The utility model relates to the technical field of steelmaking, in particular to an oxygen lance head of a furnace door.
Background
The oxygen supply of the electric furnace is a main aspect of steel smelting, and the oxygen supply of the traditional electric furnace is usually a combination of two oxygen supply modes of a furnace wall oxygen lance and a furnace door oxygen lance. The oxygen gun of the furnace door has high oxygen supply efficiency and high decarburization speed of the molten pool, and the oxygen gun is divided into two methods of immersion type oxygen gun oxygen supply and water-cooled oxygen gun oxygen supply. The furnace door water-cooling oxygen gun has the structure that the central pipe is filled with oxygen, the outside is water-cooled, and the furnace door is inserted into the furnace to blow oxygen to a molten pool through the gun head. At present, the furnace door oxygen rifle head is forging or the integrated structure that the machining formed, and oxygen is spouted from the bevel connection of rifle head end, but the head end of rifle head is fragile, and after the rifle head end damaged, the whole rifle head of needs to be changed, has improved manufacturing cost, can not be fine satisfy industrial production needs, has the space of further improvement.
Disclosure of Invention
The utility model provides an oxygen lance head of a furnace door for solving the technical problems.
The utility model is realized by the following technical scheme.
The utility model provides a furnace door oxygen rifle head, includes the shower nozzle, the terminal and the outer wall union coupling of shower nozzle, be equipped with main oxygen pipe in the outer wall pipe, the front end and the slope of main oxygen pipe set up the screwed connection in the shower nozzle, upper portion is equipped with the screw thread in the inner wall of screwed pipe, and the screwed pipe throat of screw thread below forms the mount table, and the nozzle passes through screw thread movable mounting on the mount table, is equipped with the second sealing washer between the diapire of nozzle and the mount table.
Further, a water sleeve is arranged between the outer wall pipe and the main oxygen pipe.
Further, the front end of the main oxygen pipe is connected with the adapter pipe, and the front end of the adapter pipe is connected with the inclined threaded pipe.
Further, a plurality of first sealing rings are arranged on the outer wall of the rear end of the main oxygen pipe.
Further, a plurality of jacks are arranged on the top wall of the nozzle.
Further, the inner diameter of the nozzle is reduced and then expanded in the material flow direction.
Furthermore, the furnace door oxygen lance head is made of stainless steel.
The present application has the following advantageous effects.
The furnace door oxygen lance head is provided with the replaceable nozzle, and only the nozzle can be replaced after the lance head end is damaged, so that the production cost is reduced, the maintenance is convenient, and the overall service life of the furnace door oxygen lance head is prolonged. Moreover, the oxygen gun head of the furnace door is made of stainless steel, is easy to weld with the rear gun body, is not easy to crack, has low cost and fully meets the industrial production requirement.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a cross-sectional view of the present utility model.
Wherein, 1, the spray head; 2. a main oxygen pipe; 3. a water jacket; 4. an outer wall tube; 5. a nozzle; 51. a jack; 6. a first seal ring; 7. a second seal ring; 8. a transfer tube; 9. a threaded pipe.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in figures 1-2, the furnace door oxygen lance head comprises a nozzle 1, wherein the tail end of the nozzle 1 is connected with an outer wall pipe 4, a water sleeve pipe 3 is arranged in the outer wall pipe 4, and a main oxygen pipe 2 is arranged in the water sleeve pipe 3. Cooling water enters the cavity between the water sleeve 3 and the main oxygen pipe 2 from the water inlet, enters the cavity between the water sleeve 3 and the outer wall pipe 4 after reaching the head end of the gun head, and finally is discharged from the water outlet, so that the effect of cooling the oxygen gun of the furnace door is realized.
Be equipped with a plurality of first sealing washer 6 on the outer wall of this application main oxygen pipe 2 rear end, main oxygen pipe 2 is connected the back with rifle body main oxygen pipe, has improved the leakproofness of whole furnace gate oxygen rifle.
The front end of the main oxygen pipe 2 is connected with the adapter pipe 8, the front end of the adapter pipe 8 is connected with a threaded pipe 9 obliquely arranged in the spray head 1, threads are arranged on the middle upper portion of the inner wall of the threaded pipe 9, the threaded pipe 9 below the threads is contracted to form an installation table, the spray nozzle 5 is movably installed on the installation table through threads, and a second sealing ring 7 is arranged between the bottom wall of the spray nozzle 5 and the installation table. The second sealing ring 7 realizes the end face sealing of the nozzle 5 and the threaded pipe 9, and has good sealing effect. The nozzle 5 is movably arranged in the threaded pipe 9, and when the head end of the gun head is damaged or oxygen flow is required to be controlled, the nozzle 5 is only required to be replaced. In order to facilitate replacement of the nozzle 5, the nozzle 5 is provided with a plurality of insertion holes 51 on the top wall of the nozzle 5, and the disassembly and assembly tool can be inserted into the insertion holes 51, so that the nozzle 5 is conveniently taken out from the threaded pipe 9, and replacement work is simplified. In addition, the inner diameter of the nozzle 5 is firstly reduced and then expanded along the flow direction, and the bundling and spraying effects are better than those of the spraying bevel connection in the prior art.
The furnace door oxygen lance head is integrally made of stainless steel, and the oxygen lance heads in the prior art are all made of copper, and firstly, the stainless steel replaces copper, so that the cost of the oxygen lance head is reduced; secondly, the welding of the stainless steel gun head and the stainless steel gun body is easier than the welding of the copper gun head and the stainless steel gun body, and the stainless steel gun head and the stainless steel gun body are not easy to crack, so that the service life of the whole furnace door oxygen gun is prolonged.
The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (7)

1. The utility model provides a furnace gate oxygen rifle head, includes shower nozzle (1), the end and the outer wall pipe (4) of shower nozzle (1) are connected, be equipped with main oxygen pipe (2), its characterized in that in outer wall pipe (4): the front end of the main oxygen pipe (2) is connected with a threaded pipe (9) obliquely arranged in the spray head (1), threads are arranged on the middle upper portion of the inner wall of the threaded pipe (9), the threaded pipe (9) below the threads is reduced in diameter to form an installation table, the spray nozzle (5) is movably installed on the installation table through threads, and a second sealing ring (7) is arranged between the bottom wall of the spray nozzle (5) and the installation table.
2. The oven door oxygen lance head according to claim 1, wherein: a water sleeve (3) is arranged between the outer wall pipe (4) and the main oxygen pipe (2).
3. The oven door oxygen lance head according to claim 1, wherein: the front end of the main oxygen pipe (2) is connected with the adapter pipe (8), and the front end of the adapter pipe (8) is connected with the inclined threaded pipe (9).
4. The oven door oxygen lance head according to claim 1, wherein: the outer wall of the rear end of the main oxygen pipe (2) is provided with a plurality of first sealing rings (6).
5. The oven door oxygen lance head according to claim 1, wherein: the top wall of the nozzle (5) is provided with a plurality of jacks (51).
6. The oven door oxygen lance head according to claim 1, wherein: the inner diameter of the nozzle (5) is firstly reduced and then expanded along the flow direction.
7. The oven door oxygen lance head according to claim 1, wherein: the furnace door oxygen lance head is made of stainless steel.
CN202222512321.2U 2022-09-22 2022-09-22 Furnace door oxygen gun head Active CN218951428U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222512321.2U CN218951428U (en) 2022-09-22 2022-09-22 Furnace door oxygen gun head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222512321.2U CN218951428U (en) 2022-09-22 2022-09-22 Furnace door oxygen gun head

Publications (1)

Publication Number Publication Date
CN218951428U true CN218951428U (en) 2023-05-02

Family

ID=86140783

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222512321.2U Active CN218951428U (en) 2022-09-22 2022-09-22 Furnace door oxygen gun head

Country Status (1)

Country Link
CN (1) CN218951428U (en)

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