Novel argon blowing type submersed nozzle

Abstract

A novel argon blowing type submersed nozzle comprises a nozzle body with an argon passing area, an argon channel is formed in the side wall of the argon passing area, an argon blowing nozzle for conveying gas to the argon channel is arranged on the side wall of the argon passing area, and the novel argon blowing type submersed nozzle further comprises a connecting sleeve made of carbon materials. The external thread on the argon blowing nozzle is in threaded fit with the internal thread in the connecting sleeve, and the outer edge of the connecting sleeve is embedded in the side wall of the argon introducing area in a sealed mode. The carbon connecting sleeve is installed between the argon blowing nozzle and the embedding hole and sealed in the embedding hole, the argon blowing nozzle and the connecting sleeve are in threaded fit and tight connection, and the connecting sleeve and the embedding hole are combined in a sealed mode, so that sealing between the argon blowing nozzle and the nozzle body is achieved, and the gas leakage effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refractory materials, and in particular relates to a novel argon-blowing submerged nozzle. Background Art

[0002] The submerged nozzle mainly connects the tundish and the crystallizer, drains the molten steel in the tundish into the crystallizer through the inner cavity of the submerged nozzle, and forms a stable flow field and temperature field for the molten steel in the crystallizer.

[0003] In the prior art, the argon-blowing type immersed nozzle or long nozzle usually directly sets the argon blowing nozzle on the embedded hole, such as the argon-blowing long nozzle structure described in Patent No. CN220178160U, which includes a body, a bowl and an argon blowing nozzle, the bowl is connected to the top of the body, the bowl and the body are jointly provided with an inner cavity, the body is cylindrical, the outer wall of the body is provided with a mounting hole, the interior of the body is provided with an air inlet cavity along the length direction of the body, the air inlet cavity is provided with a plurality of air inlet holes along the length direction, the air inlet holes are connected to the inner cavity, and the argon blowing nozzle is connected to the outer wall of the body and is connected to the mounting hole.

[0004] Since the existing immersion nozzle is usually formed of clay and is relatively loose, the embedded hole and the argon blowing nozzle cannot be fitted and sealed, so the argon blowing nozzle directly installed in the embedded hole leaks seriously.

[0005] Therefore, it is very important to design an argon-blown submerged nozzle that can improve the leakage. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a novel argon blowing type immersed nozzle.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a new type of argon blowing type submerged nozzle, including a nozzle body with an argon passing area, an argon gas channel is provided in the side wall of the argon passing area, an argon blowing nozzle for supplying gas to the argon gas channel is arranged on the side wall of the argon passing area, and also includes a connecting sleeve made of carbon material, the external thread on the argon blowing nozzle is threadedly matched with the internal thread in the connecting sleeve, and the outer edge of the connecting sleeve is sealed and embedded in the side wall of the argon passing area. A carbon connecting sleeve is installed between the argon blowing nozzle and the embedded hole, the carbon connecting sleeve is sealed in the embedded hole, the argon blowing nozzle and the connecting sleeve are threadedly matched and tightly connected, and the connecting sleeve and the embedded hole are sealed and combined to achieve sealing between the argon blowing nozzle and the nozzle body, thereby improving the leakage effect.

[0008] In certain embodiments, a sealed fire-clay bonding layer is provided between the outer edge of the connecting sleeve and the embedded hole on the side wall of the argon-passing area.

[0009] In some embodiments, an iron hoop is provided on the surface of the nozzle body, and a mounting hole matching the argon blowing nozzle is opened on the iron hoop, the mounting hole is opposite to the embedding hole, the argon blowing nozzle is inserted into the mounting hole, and the argon blowing nozzle is fixed on the iron hoop by welding.

[0010] In certain embodiments, the argon blowing nozzle comprises an externally threaded barrel that can be threadedly matched with the connecting sleeve, and a pointed nozzle that protrudes axially outward from one end of the externally threaded barrel, and the pointed nozzle is inserted into the embedding hole.

[0011] In certain embodiments, the argon blowing nozzle further includes a welding ring protruding radially outward from the outer edge of the other end of the externally threaded cylinder, and the welding ring is welded and fixed to the iron hoop.

[0012] In certain embodiments, the nozzle body further includes a bowl mouth area and a nozzle slag line area.

[0013] The scope of the utility model is not limited to the technical solutions formed by the specific combination of the above technical features, but also includes other technical solutions formed by any combination of the above technical features or their equivalent features. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0014] Due to the application of the above technical scheme, the utility model has the following advantages compared with the prior art: the utility model provides a new type of argon blowing type immersed nozzle, by installing a carbon connecting sleeve between the argon blowing nozzle and the embedded hole, the carbon connecting sleeve is sealed in the embedded hole, the argon blowing nozzle and the connecting sleeve are tightly connected by threaded cooperation, the connecting sleeve and the embedded hole are sealed and combined, so as to realize the sealing between the argon blowing nozzle and the nozzle body and improve the leakage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the submerged nozzle;

[0016] Figure 2 This is a schematic diagram of the assembly of the connecting sleeve and the argon blowing nozzle;

[0017] Figure 3 This is a schematic diagram of the connection sleeve and the argon blowing nozzle being separated;

[0018] Among them: 1. nozzle body; 2. bowl mouth area; 3. argon passing area; 31. argon gas channel; 4. argon blowing nozzle; 41. external threaded cylinder; 42. pointed nozzle; 43. welding ring; 5. connecting sleeve; 6. fire clay bonding layer; DETAILED DESCRIPTION

[0019] As shown in the accompanying drawings, a new type of argon-blowing submerged nozzle includes a nozzle body 1, as shown in the accompanying drawings. Figure 1As shown, the nozzle body 1 includes a bowl mouth area 2, an argon passing area 3, and a nozzle slag line area which are arranged in sequence from top to bottom.

[0020] An argon gas passage 31 is provided in the side wall of the argon gas passage area 3 , and an argon blowing nozzle 4 for supplying gas to the argon gas passage 31 is arranged on the side wall of the argon gas passage area 3 .

[0021] The submerged water inlet also includes a connecting sleeve 5, the external thread on the argon blowing nozzle 4 is threadedly matched with the internal thread in the connecting sleeve 5, the outer edge of the connecting sleeve 5 is sealed and embedded in the side wall of the argon passing area 3, the connecting sleeve 5 is made of carbon material, and a sealed fire mud bonding layer 6 is provided between the outer edge of the connecting sleeve 5 and the embedded hole in the side wall of the argon passing area 3.

[0022] A carbon connecting sleeve is installed between the argon blowing nozzle and the embedded hole, the carbon connecting sleeve is sealed in the embedded hole, the argon blowing nozzle and the connecting sleeve are tightly connected by threaded cooperation, the connecting sleeve and the embedded hole are sealed and combined, so as to realize the sealing between the argon blowing nozzle and the nozzle body, improve the air leakage effect, and the fire mud can better connect the connecting sleeve 5 and the embedded hole in the argon passing area 3.

[0023] An iron hoop is provided on the surface of the nozzle body 1, and a mounting hole matching with the argon blowing nozzle 4 is opened on the iron hoop. The mounting hole faces the embedding hole, and the argon blowing nozzle 4 is inserted into the mounting hole. The argon blowing nozzle 4 is fixed on the iron hoop by welding.

[0024] The argon blowing nozzle 4 comprises an externally threaded barrel 41 capable of threadingly matching with the connecting sleeve 5 , and a pointed nozzle 42 axially protruding outward from one end of the externally threaded barrel 41 , and the pointed nozzle 42 is inserted into the embedding hole.

[0025] The argon blowing nozzle 4 further includes a welding ring 43 which protrudes radially outward from the outer edge of the other end of the externally threaded cylinder 41 , and the welding ring 43 is welded and fixed on the iron hoop.

[0026] The original air nozzle of the argon-blowing immersed water inlet was screwed to the air vent of the product and then welded to the iron hoop for fixation. Because the thread threads of the mud molding were relatively loose, the thread threads of the air nozzle did not match the thread threads of the product molding well, resulting in serious air leakage after the air nozzle was installed.

[0027] First, the connecting sleeve 5 is installed to the embedded hole with sealing fire clay, and then the argon blowing nozzle 4 is screwed into the connecting sleeve 5 and tightened, and welded with the iron hoop, which solves the problem of difficult product molding thread and improves the air leakage.

[0028] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A novel argon blowing submerged nozzle, comprising a nozzle body (1) having an argon passing area (3), an argon gas passage (31) being provided in a side wall of the argon passing area (3), and an argon blowing nozzle (4) for supplying gas to the argon gas passage (31) being provided on the side wall of the argon passing area (3), wherein: The argon blowing nozzle (4) further comprises a connecting sleeve (5) made of carbon material, wherein the external thread on the argon blowing nozzle (4) is threadedly matched with the internal thread in the connecting sleeve (5), the outer edge of the connecting sleeve (5) is sealed and embedded in the side wall of the argon passing area (3), and the argon blowing nozzle (4) comprises an externally threaded barrel (41) capable of threadingly matching with the connecting sleeve (5), a pointed nozzle (42) protruding axially outward from one end of the externally threaded barrel (41), and a pointed nozzle (42) protruding axially outward from the other end of the externally threaded barrel (41). The outer edge of the end portion radially protrudes outwardly, the pointed nozzle (42) is inserted into the embedded hole of the side wall of the argon passing area (3), the surface of the nozzle body (1) is provided with an iron hoop, the iron hoop is provided with a mounting hole matching the argon blowing nozzle (4), the mounting hole is opposite to the embedded hole, the argon blowing nozzle (4) is inserted into the mounting hole, the argon blowing nozzle (4) is fixed on the iron hoop by welding, and the welding ring (43) is fixed on the iron hoop by welding.

2. The novel argon-blowing submerged nozzle according to claim 1 is characterized in that: A sealed fireclay bonding layer (6) is provided between the outer edge of the connecting sleeve (5) and the embedded hole on the side wall of the argon-passing area (3).

3. The novel argon-blowing submerged nozzle according to claim 1 is characterized in that: The nozzle body (1) further comprises a bowl mouth area (2) and a nozzle slag line area.

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