Novel tapping hole brick

Abstract

The utility model discloses a novel tapping hole brick which comprises a first brick body and a second brick body, the first brick body and the second brick body form a complete tapping hole tubular brick, the first brick body and the second brick body are arranged in a split mode, and the first brick body is longer than the second brick body. According to the novel tapping hole brick, the first brick body and the second brick body which are split are arranged, the first brick body and the second brick body are combined to form a complete tapping hole tubular brick structure, the second brick body with the short length is connected with a converter opening, the second brick body which is seriously abraded is short, and therefore the second brick body is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking furnaces, in particular to a novel steel outlet brick. Background Art

[0002] During the production process of steel, steel-making furnaces are used to melt raw materials such as pig iron. The taphole bricks are important refractory components of the steel-making furnace. They are responsible for transporting high-temperature molten steel from the furnace to equipment outside the furnace. The taphole bricks are usually composed of seat bricks and tube bricks. The taphole tube bricks are the channel for the molten steel in the converter to flow to the ladle. They are in direct contact with the molten steel, and their lifespan directly affects the steelmaking rhythm of the converter.

[0003] The inner hole of the tapping hole pipe brick is subjected to melting, scouring and erosion by the high-temperature molten steel during steel tapping, and its service life is much shorter than the overall life of the steelmaking furnace. The tapping hole pipe brick is a vulnerable part and needs to be replaced many times during the entire furnace service life. The pipe inlet where the pipe brick is connected to the converter is most severely eroded, so the pipe bricks at the converter mouth are replaced the most times. Currently, most of the pipe bricks are prefabricated parts of the same size. Therefore, when replacing the pipe bricks at the converter mouth connection, the part that needs to be disassembled is longer and not easy to operate. Utility Model Content

[0004] The utility model aims to provide a new type of steel outlet brick. The device is provided with split tube bricks with short ends and long middle structure, which is convenient for replacing the tube bricks of the converter mouth to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a new type of steel outlet brick, including a first brick body and a second brick body, the first brick body and the second brick body constitute a complete steel outlet pipe brick, the first brick body and the second brick body are separately arranged, and the first brick body is longer than the second brick body.

[0006] Preferably, the No. 1 brick body is a cylindrical structure, a No. 1 flow channel is arranged inside the No. 1 brick body, and the No. 1 flow channel is a cylindrical structure.

[0007] By adopting the above technical solution, flow channel No. 1 can allow molten steel to flow.

[0008] Preferably, the outer surface of the No. 2 brick body is a cylindrical structure, a No. 2 flow channel is arranged inside the No. 2 brick body, one side of the No. 2 flow channel is a cylindrical structure, and the other end of the No. 2 flow channel is a trumpet-shaped structure.

[0009] By adopting the above technical solution, the flow rate of the molten steel can be increased by utilizing the trumpet-shaped structure of the No. 2 flow channel.

[0010] Preferably, the interiors of the No. 1 flow channel and the No. 2 flow channel are respectively provided with heat-resistant coatings.

[0011] By adopting the above technical solution and utilizing the heat-resistant coating, the heat-resistant performance of the device can be increased.

[0012] Preferably, a snap-fit ​​block is provided on one side of the No. 2 brick body, the snap-fit ​​block is a raised annular structure, and the snap-fit ​​block is provided at one end of the cylindrical outlet of the No. 2 flow channel, and a circular snap-fit ​​hole is provided in an annular shape on the surface of the snap-fit ​​block.

[0013] By adopting the above technical solution, the engaging block can be used to assist in connecting the second brick body with the first brick body.

[0014] Preferably, both ends of the No. 1 brick body are respectively provided with a snap-fit ​​groove, the snap-fit ​​groove is a circular groove structure, and the snap-fit ​​groove is snap-fitted with the snap-fit ​​block, and a round rod is annularly provided on the surface of the snap-fit ​​groove, and the round rod is snap-fitted with the snap-fit ​​hole on the surface of the snap-fit ​​block.

[0015] By adopting the above technical solution, the second brick body and the first brick body can be more tightly connected by using the engagement groove and the engagement block.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the new steel outlet brick:

[0017] 1. The device is provided with a split No. 1 brick body and a No. 2 brick body, which are combined to form a complete steel outlet pipe brick structure, and the No. 2 brick body with a shorter length is connected to the converter mouth, so that the No. 2 brick body with severe wear is shorter in length, thereby facilitating the replacement of the No. 2 brick body;

[0018] 2. The first and second brick bodies of the device are respectively provided with a first flow channel and a second flow channel. The first flow channel is a cylindrical structure, and one end of the outlet of the second flow channel is set to be trumpet-shaped, so that when the molten steel enters the second flow channel, the flow velocity in the trumpet-shaped second flow channel increases, the steel tapping speed is relatively high, and the steel tapping time is shortened;

[0019] 3. The interior of the No. 1 flow channel and the No. 2 flow channel of the device are respectively provided with heat-resistant coatings to increase the heat resistance of the brick body, and matching snap-fit ​​blocks and snap-fit ​​grooves are provided on the surfaces of the No. 1 brick body and the No. 2 brick body, making the connection process of the No. 1 brick body and the No. 2 brick body tighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of brick body No. 1 of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the first brick body of the utility model;

[0023] Figure 4This is a schematic diagram of the No. 2 brick structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the second brick body of the utility model;

[0025] Figure 6 It is a schematic diagram of the top-sectional structure of the connection between the first brick body and the second brick body of the utility model.

[0026] In the figure: 1. Brick body No. 1; 2. Brick body No. 2; 3. Flow channel No. 1; 4. Flow channel No. 2; 5. Heat-resistant coating; 6. Snap-fit ​​block; 7. Snap-fit ​​groove; 8. Round rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6 The utility model provides a technical solution: a new type of steel outlet brick, including a No. 1 brick body 1, a No. 2 brick body 2, a No. 1 flow channel 3, a No. 2 flow channel 4, a heat-resistant coating 5, a clamping block 6, a clamping groove 7, and a round rod 8.

[0029] The first brick body 1 and the second brick body 2 constitute a complete steel outlet pipe brick. The first brick body 1 and the second brick body 2 are separately arranged, and the first brick body 1 is longer than the second brick body 2. The first brick body 1 is a cylindrical structure. The first flow channel 3 is arranged inside the first brick body 1. The first flow channel 3 is a cylindrical structure. The outer surface of the second brick body 2 is a cylindrical structure. The second flow channel 4 is arranged inside the second brick body 2. One side of the second flow channel 4 is a cylindrical structure, and the other end of the second flow channel 4 is a trumpet-shaped structure. The first flow channel 3 and the second flow channel 4 are arranged on the inner surface of the second brick body 2. 4 are respectively provided with heat-resistant coatings 5, a clamping block 6 is provided on one side of the second brick body 2, the clamping block 6 is a raised ring structure, and the clamping block 6 is arranged at one end of the cylindrical outlet of the second flow channel 4, and a circular clamping hole is arranged in an annular manner on the surface of the clamping block 6, and clamping grooves 7 are respectively provided at both ends of the first brick body 1, and the clamping grooves 7 are annular groove structures, and the clamping grooves 7 are clamped and matched with the clamping block 6, and a round rod 8 is arranged in an annular manner on the surface of the clamping groove 7, and the round rod 8 is clamped and matched with the clamping hole on the surface of the clamping block 6;

[0030] like Figure 1-Figure 6As shown, the engaging groove 7 at one end of the No. 1 brick body 1 is engaged with the engaging block 6 on the surface of the No. 2 brick body 2, so that the round rod 8 on the surface of the engaging groove 7 is inserted into the engaging hole on the surface of the engaging block 6, so that the engaging groove 7 is engaged with the engaging block 6. After engagement, the No. 1 brick body 1 and the No. 2 brick body 2 are fixed by using a seat brick to complete the connection between the No. 1 brick body 1 and the No. 2 brick body 2, and the trumpet-shaped end of the No. 2 flow channel 4 inside the No. 2 brick body 2 is connected to the converter mouth, and the molten steel flows out from the steel outlet and enters the No. 2 flow channel 4 in the No. 2 brick body 2, and the flow rate increases at the flow channel mouth of the trumpet-shaped No. 2 flow channel 4, and the molten steel flows in the No. 2 flow channel 4 and the No. 1 flow channel 3. The heat-resistant coating 5 in the No. 1 flow channel 3 and the No. 2 flow channel 4 can increase the heat resistance of the device and improve the service life. After the tube bricks at the converter mouth cannot be used, only the No. 2 brick body 2 with a shorter length needs to be replaced to increase the overall service life of the tube bricks.

[0031] Working principle: When using the new steel-outlet brick, the No. 1 brick body 1 and the No. 2 brick body 2 are separately arranged, and the engaging groove 7 on the surface of the No. 1 brick body 1 is engaged with the engaging block 6 on the surface of the No. 2 brick body 2, so that the round rod 8 on the surface of the engaging groove 7 is inserted into the engaging hole on the surface of the engaging block 6, and the device can be pre-fixed before connecting with the seat brick. The No. 1 brick body 1 and the No. 2 brick body 2 are combined to form a complete steel-outlet pipe brick structure. The No. 2 brick body 2 connected to the converter mouth is shorter, which is convenient for replacing the No. 2 brick body 2. The No. 1 flow channel 3 and the No. 2 flow channel 4 inside the No. 1 brick body 1 and the No. 2 brick body 2 can be used for the flow of molten steel. The No. 1 flow channel 3 is a cylindrical structure, and one end of the outlet of the No. 2 flow channel 4 is set to a trumpet shape, which increases the flow speed of the molten steel and shortens the steel-out time. In addition, the interior of the No. 1 flow channel 3 and the No. 2 flow channel 4 is provided with a heat-resistant coating 5 to increase the heat resistance of the brick body and increase the overall practicality.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of steel tapping hole brick, comprising a first brick body (1) and a second brick body (2), wherein the first brick body (1) and the second brick body (2) constitute a complete steel tapping hole pipe brick, characterized in that: The first brick body (1) and the second brick body (2) are arranged separately, and the first brick body (1) is longer than the second brick body (2).

2. A new type of tap hole brick according to claim 1, characterized in that: The first brick body (1) is of a cylindrical structure, a first flow channel (3) is arranged inside the first brick body (1), and the first flow channel (3) is of a cylindrical structure.

3. The new type of tap hole brick according to claim 1 is characterized in that: The outer surface of the No. 2 brick body (2) is a cylindrical structure, and a No. 2 flow channel (4) is arranged inside the No. 2 brick body (2). One side of the No. 2 flow channel (4) is a cylindrical structure, and the other end of the No. 2 flow channel (4) is a trumpet-shaped structure.

4. The novel tap hole brick according to claim 2 is characterized in that: The interiors of the first flow channel (3) and the second flow channel (4) are respectively provided with heat-resistant coatings (5).

5. The novel tap hole brick according to claim 1 is characterized in that: A snap-fit ​​block (6) is provided on one side of the second brick body (2); the snap-fit ​​block (6) is a raised annular structure and is arranged at one end of the cylindrical outlet of the second flow channel (4); a circular snap-fit ​​hole is provided in an annular shape on the surface of the snap-fit ​​block (6).

6. The novel tap hole brick according to claim 1 is characterized in that: The first brick body (1) is provided with a snap-fit ​​groove (7) at both ends, the snap-fit ​​groove (7) is a circular groove structure, and the snap-fit ​​groove (7) is snap-fitted with the snap-fit ​​block (6), and a round rod (8) is provided in an annular shape on the surface of the snap-fit ​​groove (7), and the round rod (8) is snap-fitted with the snap-fit ​​hole on the surface of the snap-fit ​​block (6).

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