Composite slag line type submersed nozzle with side hole protection device

Abstract

The utility model relates to the technical field of nozzle protection, in particular to a composite slag line type submersed nozzle with a side hole protection device, which comprises a nozzle body. The nozzle body comprises a middle body material, a wear-resistant material fixed to the upper end of the middle body material, a lining material fixed to the inner side face of the middle body material, a slag line material fixed to the lower end of the interior of the middle body material, a composite slag line fixed to the inner side face of the slag line material and a side hole material fixed to the bottom of the slag line material. According to the composite slag line type submersed nozzle with the side hole protection device, the structure of the inclined side hole is improved, and the lining material is installed on the inner bottom face of the inclined side hole, so that the thermal shock stability of the side hole of a product is improved, bottom falling and cracking of the side hole of the product are avoided, and the composite slag line type submersed nozzle is more stable in use and higher in field adaptability; by adopting the detachable structural design, the lining material is convenient to mount and dismount, and the later use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nozzle protection, in particular to a composite slag line type immersed nozzle with a side hole protection device. Background Art

[0002] The submerged nozzle is a refractory sleeve installed at the bottom of the intermediate tank in the continuous steel casting equipment and inserted below the steel liquid level of the crystallizer. The main function of the submerged nozzle is to prevent secondary oxidation of the intermediate tank injection flow and splashing of molten steel. At present, the side holes of the composite slag linear submerged nozzles on the market are not protected. Whenever the steel mill bakes poorly, the side holes of the product will fall off and crack, and the durability is not high. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the side holes of the composite slag linear submerged nozzles currently on the market are not protected, and whenever the steel mill bakes poorly, the side holes of the products will fall off and crack, and the durability is not high.

[0004] The utility model adopts the following technical solution to solve the technical problem: a composite slag line type immersed water nozzle with a side hole protection device, comprising a water nozzle body, wherein the water nozzle body comprises a central body material, a wear-resistant material fixed on the upper end of the central body material, a body lining material fixed on the inner side surface of the central body material, a slag line material fixed on the lower end of the central body material, a composite slag line fixed on the inner side surface of the slag line material, and a side hole material fixed on the bottom of the slag line material, wherein the side hole material is symmetrically provided with inclined side holes on both sides, an internal installation groove is provided on the inner bottom surface of the side hole material, and a bottom lining material for improving the thermal shock stability of the inclined side hole is installed inside the internal installation groove.

[0005] The lower ends of the inner walls on both sides of the internal installation groove are symmetrically provided with strip-shaped assembly limiting grooves matching with the bottom lining material.

[0006] The bottom lining material is a bending plate that gradually descends from the middle to both sides, and both sides of the bending plate are provided with bottom side limiting bending strips protruding toward the inside of the strip-shaped assembly limiting groove.

[0007] The bottom side limiting bending strip is bent inwardly at the bottom of the bottom lining material to form a bottom extrusion section.

[0008] The bottom of the bottom extrusion section is provided with a bottom supporting frame protruding upward.

[0009] The inner end of the bottom extrusion section is provided with an inner limiting plate bent upward.

[0010] The beneficial effects of the utility model are:

[0011] (1) The utility model provides a composite slag linear submerged nozzle with a side hole protection device. By improving the structure of the inclined side hole and installing a bottom lining material on the inner bottom surface of the inclined side hole, the thermal shock stability of the product side hole is improved to prevent the product side hole from falling off and cracking, making the composite slag linear submerged nozzle more stable in use and more adaptable on site.

[0012] (2) The detachable structure design facilitates the installation and removal of the lining material, thus reducing the subsequent use cost;

[0013] (3) By adopting an integrated bending molding design, the stability of the structure can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is an internal partial schematic diagram of the position of the side hole material in the utility model. DETAILED DESCRIPTION

[0017] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] Figure 1 and Figure 2 A composite slag line type immersed nozzle with a side hole protection device is shown, comprising a nozzle body, the nozzle body comprising a central body material 1, a wear-resistant material 2 fixed on the upper end of the central body material 1, a body lining material 3 fixed on the inner side surface of the central body material 1, a slag line material 4 fixed at the lower end of the inner part of the central body material 1, a composite slag line 5 fixed on the inner side surface of the slag line material 4 and a side hole material 6 fixed at the bottom of the slag line material 4, the side hole material 6 is symmetrically provided with inclined side holes 7 on both sides, an internal mounting groove 8 is provided on the inner bottom surface of the side hole material 6, and a bottom lining material 9 for improving the thermal shock stability of the inclined side hole 7 is installed inside the internal mounting groove 8.

[0020] In order to cooperate with the lateral assembly limit, strip-shaped assembly limit grooves 10 that match the bottom lining material 9 are symmetrically opened at the lower ends of the inner walls on both sides of the internal installation groove 8.

[0021] In order to cooperate with the installation limit on both sides, the bottom lining material 9 is a bent plate that gradually decreases from the middle to both sides, and both sides of the bent plate have bottom side limit bending strips 11 protruding into the strip-shaped assembly limit groove 10.

[0022] The bottom lining material 9 is clamped and fixed with the internal installation groove 8 by the bottom side limiting bending strips 11 on both sides being clamped into the strip-shaped assembly limiting groove 10, thereby ensuring the stability and firmness of the installation of the lining material 9.

[0023] In order to cooperate with the bending forming, the bottom side limiting bending strip 11 is bent inwardly at the bottom of the inner lining material 9 to form a bottom extrusion section 12.

[0024] In order to enhance the support force and stability of the upper end slope of the lining material 9 , the bottom of the bottom extrusion section 12 is provided with an upwardly protruding bottom support frame 13 .

[0025] In order to enhance the supporting force in the middle and the extrusion stability on both sides, the inner end of the bottom extrusion section 12 is provided with an inner limiting plate 14 bent upward.

[0026] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A composite slag line submerged nozzle with a side hole protection device, comprising a nozzle body, characterized in that: The nozzle body comprises a central body material (1), a wear-resistant material (2) fixed to the upper end of the central body material (1), a body inner lining material (3) fixed to the inner side surface of the central body material (1), a slag line material (4) fixed to the lower end of the central body material (1), a composite slag line (5) fixed to the inner side surface of the slag line material (4), and a side hole material (6) fixed to the bottom of the slag line material (4), wherein the side hole material (6) is symmetrically provided with oblique side holes (7) on both sides, an internal installation groove (8) is provided on the inner bottom surface of the side hole material (6), and a bottom lining material (9) for improving the thermal shock stability of the oblique side hole is installed inside the internal installation groove (8).

2. The composite slag line submerged nozzle with a side hole protection device according to claim 1 is characterized in that: The lower ends of the inner walls on both sides of the internal installation groove (8) are symmetrically provided with strip-shaped assembly limit grooves (10) that match the bottom lining material (9).

3. The composite slag line submerged nozzle with a side hole protection device according to claim 2 is characterized in that: The bottom lining material (9) is a bent plate that gradually descends from the middle to the two sides, and the two sides of the bent plate have bottom-side limiting bending strips (11) that protrude toward the inside of the strip-shaped assembly limiting groove (10).

4. The composite slag line submerged nozzle with a side hole protection device according to claim 3 is characterized by: The bottom side limiting bending strip (11) is bent inwardly at the bottom of the bottom lining material (9) to form a bottom extrusion section (12).

5. The composite slag line submerged nozzle with a side hole protection device according to claim 4 is characterized in that: The bottom of the bottom extrusion section (12) is provided with a bottom support frame (13) protruding upwards.

6. The composite slag line submerged nozzle with a side hole protection device according to claim 4 is characterized in that: The inner end of the bottom extrusion section (12) is provided with an inner limiting plate (14) bent upward.

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