Air brick for blowing argon from bottom of steel ladle

Abstract

The utility model provides a steel ladle bottom argon blowing air brick which comprises a steel sleeve and an air brick body, the steel sleeve is connected to the outer side of the air brick body in a sleeved mode, a connecting cover is arranged at the bottom end of the steel sleeve, internal threads are arranged on the inner wall of the connecting cover, a metal cover plate is arranged at the bottom end of the air brick body, and external threads are arranged on the peripheral side face of the metal cover plate. And the metal cover plate is spirally connected with the connecting cover through the external threads. The steel sleeve, the connecting cover, the metal cover plate, the external threads and the internal threads are matched for use, so that the air brick can be conveniently and quickly assembled, and during operation, a worker sleeves the outer side of the air brick main body with the steel sleeve, then inserts the metal vent pipe into the counterbore, and then manually connects the metal cover plate with the connecting cover in a screwed manner; and in addition, due to the arrangement of an external thread and an internal thread, the metal vent pipe can be conveniently and rapidly replaced, and waste caused by overall replacement is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas -permeable brick, especially steel ladle bottom argon gas -permeable brick. BACKGROUND

[0002] In the steel metallurgical industry, after the molten steel enters the ladle, by blowing inert gas into the molten steel, the purpose of achieving uniform molten steel temperature and chemical composition, promoting inclusion floating or controlling inclusion form is the technology widely used in modern metallurgical industry. At present, the method for realizing this means is to install double-layer gas -permeable brick at the bottom of the ladle, which has the advantages of good stirring effect, simple operation, low cost and the like, therefore, the double-layer gas -permeable brick has become an essential functional gas -permeable element in modern metallurgical industry.

[0003] The existing technology has the following problems:

[0004] The existing double-layer gas -permeable brick steel sleeve and low-end metal cover plate are generally fixed together by welding, but it is found in the use process that the top of the steel sleeve is easily damaged by high temperature after long-term use, so that the steel sleeve or the whole needs to be replaced, but since the metal cover plate and the steel sleeve are fixed by welding, the metal cover plate also needs to be replaced, which not only increases the production cost of the gas -permeable brick, but also wastes materials.

[0005] Therefore, it is necessary to provide a steel ladle bottom argon gas -permeable brick to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model provides a steel ladle bottom argon gas -permeable brick, solves the problem in the prior art.

[0007] In order to solve the above technical problems, the utility model provides a steel ladle bottom argon gas -permeable brick, which comprises a steel sleeve and a gas -permeable brick body, the steel sleeve is sleeved outside the gas -permeable brick body, a connecting cover is arranged at the bottom end of the steel sleeve, an internal thread is arranged on the inner wall of the connecting cover, a metal cover plate is arranged at the bottom end of the gas -permeable brick body, an external thread is arranged on the circumferential surface of the metal cover plate, and the metal cover plate is spirally connected with the connecting cover through the external thread.

[0008] Preferably, a metal gas -permeable pipe is arranged at the bottom end of the gas -permeable brick body, a limiting ring is arranged at the top end of the metal gas -permeable pipe in a penetrating mode, and a countersunk hole is arranged at the middle position of the surface of the metal cover plate in a penetrating mode.

[0009] Preferably, the thickness of the countersunk hole groove is equal to the thickness of the limiting ring.

[0010] Preferably, a brick core is arranged inside the gas -permeable brick body, and a slit is arranged at the surface of the brick core in a penetrating mode.

[0011] Preferably, the diameter of the inside of the countersunk hole is equal to the diameter of the outside of the metal gas -permeable pipe.

[0012] Compared with the related art, the steel ladle bottom argon blowing gas permeable brick has the following beneficial effects:

[0013] 1、Compared with the prior art, the steel ladle bottom argon blowing gas permeable brick, by setting the steel sleeve, the connecting cover, the metal cover plate, the outer thread, the inner thread, the cooperation of the steel sleeve, the connecting cover, the metal cover plate, the outer thread and the inner thread, facilitates the quick assembly of the gas permeable brick, so that when operating, the staff inserts the metal gas permeable pipe into the counterbore, and then manually screws the metal cover plate and the connecting cover, thereby completing the assembly of the gas permeable brick body, and through the setting of the outer thread and the inner thread, the metal gas permeable pipe can be quickly replaced, avoiding waste caused by overall replacement, and through the cooperation of the counterbore, the limiting plate and the metal gas permeable pipe, the metal gas permeable pipe can be quickly replaced, and only the limiting ring needs to be taken out from the counterbore and then a new metal gas permeable pipe is inserted, so that the operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The structure diagram of the steel ladle bottom argon blowing gas permeable brick provided by the utility model is shown.

[0015] Figure 2 The internal structure diagram of the steel ladle bottom argon blowing gas permeable brick provided by the utility model is shown.

[0016] Figure 3 The steel sleeve structure diagram of the steel ladle bottom argon blowing gas permeable brick provided by the utility model is shown.

[0017] Figure 4 The metal cover plate structure diagram of the steel ladle bottom argon blowing gas permeable brick provided by the utility model is shown.

[0018] Figure 5 The metal gas permeable pipe structure diagram of the steel ladle bottom argon blowing gas permeable brick provided by the utility model is shown.

[0019] Reference signs in the drawings:

[0020] 1, steel sleeve; 2, slit; 3, metal gas permeable pipe; 4, connecting cover; 5, gas permeable brick body; 6, brick core; 7, metal cover plate; 8, inner thread; 9, counterbore; 10, limiting ring; 11, outer thread. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and embodiments.

[0022] First embodiment

[0023] Please refer to Figures 1-5The steel ladle bottom argon blowing air brick comprises a steel sleeve 1 and an air brick body 5, the steel sleeve 1 is sleeved outside the air brick body 5, a connecting cover 4 is arranged at the bottom end of the steel sleeve 1, an inner thread 8 is arranged on the inner wall of the connecting cover 4, a metal cover plate 7 is arranged at the bottom end of the air brick body 5, an outer thread 11 is arranged on the lateral surface of the metal cover plate 7, and the metal cover plate 7 is screw-connected with the connecting cover 4 through the outer thread 11.

[0024] Through the cooperation of the steel sleeve 1, the connecting cover 4, the metal cover plate 7, the outer thread 11 and the inner thread 8, the air brick can be quickly assembled, the steel sleeve 1 is sleeved outside the air brick body 5, then the metal air pipe 3 is inserted into the counterbore 9, and then the metal cover plate 7 is screw-connected with the connecting cover 4, so that the assembly of the air brick body 5 is completed, and the metal air pipe 3 can be quickly replaced through the outer thread 11 and the inner thread 8, so that waste caused by overall replacement is avoided.

[0025] The working principle of the steel ladle bottom argon blowing air brick is as follows:

[0026] The steel ladle bottom argon blowing air brick is convenient for quick assembly through the cooperation of the steel sleeve 1, the connecting cover 4, the metal cover plate 7, the outer thread 11 and the inner thread 8, the steel sleeve 1 is sleeved outside the air brick body 5, then the metal air pipe 3 is inserted into the counterbore 9, and then the metal cover plate 7 is screw-connected with the connecting cover 4, so that the assembly of the air brick body 5 is completed, and the metal air pipe 3 can be quickly replaced through the outer thread 11 and the inner thread 8, so that waste caused by overall replacement is avoided, the metal air pipe 3 can be quickly replaced through the cooperation of the counterbore 9, the limiting plate and the metal air pipe 3, and the replacement only needs to take out the limiting ring 10 from the counterbore 9 and then insert the new metal air pipe 3, so that the operation is simple.

[0027] Compared with the related art, the steel ladle bottom argon blowing air brick has the following beneficial effects:

[0028] The steel ladle bottom blowing argon air brick is convenient for quick assembly of the air brick through cooperation of the steel sleeve 1, the connecting cover 4, the metal cover plate 7, the external thread 11 and the internal thread 8, so that when operating, the staff member sleeves the steel sleeve 1 outside the air brick main body 5, then inserts the metal air pipe 3 into the counterbore hole 9, and then screws the metal cover plate 7 and the connecting cover 4, so that the assembly of the air brick main body 5 is completed, and through cooperation of the counterbore hole 9, the limiting plate and the metal air pipe 3, the metal air pipe 3 is convenient for quick replacement, and only the limiting ring 10 needs to be taken out from the counterbore hole 9, and then a new metal air pipe 3 is inserted again, so that the operation is simple.

[0029] Second embodiment

[0030] Please refer to Figures 1-5 Based on the steel ladle bottom blowing argon air brick provided by the first embodiment of the application, the second embodiment of the application provides another steel ladle bottom blowing argon air brick. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the separate implementation of the first embodiment.

[0031] Specifically, the difference between the steel ladle bottom blowing argon air brick provided by the second embodiment of the application is that the air brick main body 5 is provided with the metal air pipe 3 at the bottom end, the metal air pipe 3 is provided with the limiting ring 10 at the top end, and the counterbore hole 9 is provided in the middle of the surface of the metal cover plate 7, through cooperation of the counterbore hole 9, the limiting plate and the metal air pipe 3, the metal air pipe 3 is convenient for quick replacement, and only the limiting ring 10 needs to be taken out from the counterbore hole 9, and then a new metal air pipe 3 is inserted again, so that the operation is simple.

[0032] By setting the groove thickness of the counterbore hole 9 to be equal to the thickness of the limiting ring 10, the stability between the metal air pipe 3 and the metal cover plate 7 is improved.

[0033] By setting the groove thickness of the counterbore hole 9 to be equal to the thickness of the limiting ring 10, the stability between the metal air pipe 3 and the metal cover plate 7 is improved.

[0034] By setting the groove thickness of the counterbore hole 9 to be equal to the thickness of the limiting ring 10, the stability between the metal air pipe 3 and the metal cover plate 7 is improved.

[0035] By setting the groove thickness of the counterbore hole 9 to be equal to the thickness of the limiting ring 10, the stability between the metal air pipe 3 and the metal cover plate 7 is improved.

[0036] It should be noted that all kinds of components used in the present application are standard components and can be purchased from the market, the specific connection mode of each part adopts the conventional means such as bolt, rivet and welding in the prior art, the mechanical, parts and electrical equipment adopt the conventional type in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the electrical equipment is in communication with the external safe power supply, which will not be described in detail here.

[0037] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A ladle bottom argon blowing porous plug comprising a steel jacket (1) and a porous plug main body (5), characterized in that, The steel sleeve (1) is sleeved outside the air brick body (5), the bottom end of the steel sleeve (1) is provided with a connecting cover (4), the inner wall of the connecting cover (4) is provided with an internal thread (8), the bottom end of the air brick body (5) is provided with a metal cover plate (7), the circumferential surface of the metal cover plate (7) is provided with an external thread (11), and the metal cover plate (7) is screw-connected with the connecting cover (4) through the external thread (11).

2. The bottom-banishing argon permeation brick for a ladle according to claim 1, characterized by, The bottom end of the air brick body (5) is provided with a metal air pipe (3), the top end of the metal air pipe (3) is provided with a limiting ring (10) in a penetrating mode, and the surface of the metal cover plate (7) is provided with a countersunk hole (9) in a penetrating mode at the middle position.

3. The bottom stirring argon-lance porous plug for a ladle according to claim 2, characterized by The thickness of the countersunk hole (9) is equal to the thickness of the limiting ring (10).

4. The bottom stirring argon-lance porous plug for a ladle according to claim 1, characterized by, The air brick body (5) is internally provided with a brick core (6), and the surface of the brick core (6) is provided with a slit (2) in a penetrating mode.

5. The bottom stirring argon-lance porous plug for a ladle according to claim 2, characterized by, The inner diameter of the countersunk hole (9) is equal to the outer diameter of the metal air pipe (3).

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