High-efficiency and high-durability tapping channel

Abstract

The utility model relates to the technical field of iron production, in particular to a high-efficiency and high-durability tapping channel. According to the technical scheme, the device comprises a check block, an outer wrapping shell, a back plate and a ditch head block, the ditch head block is arranged in the outer wrapping shell, an extending block is arranged on the ditch head block, a gap cavity is formed between the outer wrapping shell and the ditch head block, and the gap cavity is filled with a gravel layer. According to the utility model, the elasticity modulus of the tapping channel is improved through the matching of the structures, so that the tapping channel is effectively buffered and decompressed after being stressed, the abrasion speed of the tapping channel is reduced, and the service life of the head of the tapping channel is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of iron production, in particular to a high-efficiency and high-durability iron outlet ditch. Background Art

[0002] The blast furnace tapping ditch is an important facility in front of the blast furnace. Its main function is to buffer the slag and iron ejected from the blast furnace tapping hole, separate the slag and iron, and further transport the slag and iron to the ladle and slag granulation facilities. In actual production, the working environment of the tapping ditch is extremely harsh, such as frequent scouring and erosion of high-temperature molten iron and slag, and the vibration of intermittent tapping.

[0003] During the process of slag being ejected from the blast furnace taphole, the slag falls to the head of the taphole, collides and scours against the taphole. The elastic modulus of the existing taphole is almost zero, which results in the taphole not being effectively buffered after being subjected to force. The taphole wears faster, resulting in a shorter service life of the taphole head.

[0004] For this reason, we propose a highly efficient and durable iron outlet ditch to solve the existing problems. Utility Model Content

[0005] The utility model aims to provide a high-efficiency and high-durability iron outlet channel in view of the problems existing in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency and high-durability iron outlet groove, comprising a stopper, an outer shell, a back plate and a groove head block, a groove head block is arranged in the outer shell, a protruding block is arranged on the groove head block, a gap cavity is arranged between the outer shell and the groove head block, and the gap cavity is filled with a sand and gravel layer.

[0007] Preferably, a back plate is cast on the back of the outer shell, and limit blocks are symmetrically cast on the back plate;

[0008] The back side of the groove head block is symmetrically provided with a limit groove adapted to the limit block, and the limit block is slidably arranged on the limit groove;

[0009] One side of the groove head block is in contact with the back plate.

[0010] Preferably, a stopper is cast at the bottom end of the inner wall of the outer shell, and a side of the stopper close to the back plate fits with a side of the groove head block away from the back plate.

[0011] Preferably, the gravel layer filled in the gap cavity fills the space formed by the bottom surface of the outer shell, the lower surface of the groove head block, the back plate and the stop block, and the highest point of the gravel layer is lower than the upper surface of the groove head block.

[0012] Preferably, grooves are provided on the upper surfaces of the groove head block and the extension block.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model is a high-efficiency and high-durability iron outlet ditch. The device can be assembled at the head position of the iron outlet ditch during use. When the blast furnace taps iron and slag iron falls on the ditch head block, the sand and gravel layer filled between the ditch head block and the outer shell provides a buffer and vibration reduction effect between the ditch head block and the outer shell, thereby increasing the elastic modulus of the iron outlet ditch. The position design of the stopper and the back plate can limit the ditch head block from X-axial movement. The limiting cooperation between the limiting block and the limiting groove can ensure that the ditch head block does not produce a large Y-axial movement, which can avoid a large position deviation of the ditch head block in the outer shell. At the same time, the sand and gravel layer can be limited from leaking. The utility model improves the elastic modulus of the iron outlet ditch, ensures that the iron outlet ditch is effectively buffered and decompressed after being subjected to force, reduces the wear rate of the iron outlet ditch, and increases the service life of the head of the iron outlet ditch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the combined structure of the utility model;

[0017] Figure 3 For the utility model Figure 2 Schematic diagram of the main structure;

[0018] Figure 4 It is a schematic diagram of the structure of the groove head block of the utility model.

[0019] Reference numerals:

[0020] 1. Extension block; 2. Stop block; 3. Outer shell; 4. Back plate; 5. Groove head block; 6. Limit block; 7. Limit groove; 8. Groove; 9. Gap cavity. DETAILED DESCRIPTION

[0021] 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.

[0022] Embodiment 1

[0023] like Figure 1-Figure 4As shown, the utility model proposes an efficient and durable iron outlet groove, including a stopper 2, an outer shell 3, a back plate 4 and a groove head block 5, a groove head block 5 is arranged in the outer shell 3, a protruding block 1 is arranged on the groove head block 5, a gap cavity 9 is arranged between the outer shell 3 and the groove head block 5, and the gap cavity 9 is filled with a sand and gravel layer.

[0024] Based on Example 1:

[0025] At the head position of the iron outlet groove, when the blast furnace taps iron and slag iron falls onto the groove head block 5, the sand and gravel layer filled between the groove head block 5 and the outer shell 3 provides a buffer and vibration reduction effect between the groove head block 5 and the outer shell 3, thereby increasing the elastic modulus of the iron outlet groove.

[0026] Embodiment 2

[0027] like Figure 1-Figure 4 As shown, the utility model provides a high-efficiency and high-durability iron outlet channel. Compared with the first embodiment, the present embodiment further includes: a back plate 4 is cast on the back of the outer shell 3, and a limit block 6 is symmetrically cast on the back plate 4;

[0028] The back side of the groove head block 5 is symmetrically provided with a limit groove 7 which is compatible with the limit block 6, and the limit block 6 is slidably arranged on the limit groove 7; through the limit cooperation between the limit block 6 and the limit groove 7, it is ensured that the groove head block 5 does not produce a large Y-axial movement, and a large position deviation of the groove head block 5 in the outer shell 3 can be avoided.

[0029] One side of the groove head block 5 is in contact with the back plate 4, and a stopper 2 is cast at the bottom end of the inner wall of the outer shell 3, and the side of the stopper 2 close to the back plate 4 is in contact with the side of the groove head block 5 away from the back plate 4.

[0030] The gravel layer filled in the gap cavity 9 fills the space formed by the bottom surface of the outer shell 3, the lower surface of the groove head block 5, the back plate 4 and the stopper 2. The highest point of the gravel layer is lower than the upper surface of the groove head block 5. Through the position design of the stopper 2 and the back plate 4, the groove head block 5 can be limited to prevent X-axial movement, and the gravel layer can be limited to prevent leakage.

[0031] Grooves 8 are provided on the upper surfaces of the groove head block 5 and the extension block 1 , and the slag iron flows through the grooves 8 .

[0032] The structural surfaces in the above structures that are subject to scouring are all made of high-strength scouring-resistant taphole mud.

[0033] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high-efficiency and high-durability iron-outlet channel, comprising a stopper (2), an outer shell (3), a back plate (4) and a channel head block (5), characterized in that: A groove head block (5) is arranged inside the outer shell (3), a protruding block (1) is arranged on the groove head block (5), a gap cavity (9) is arranged between the outer shell (3) and the groove head block (5), and a sand and gravel layer is filled in the gap cavity (9).

2. The high-efficiency and high-durability iron outlet channel according to claim 1, characterized in that: A back plate (4) is cast on the back of the outer shell (3), and a limit block (6) is symmetrically cast on the back plate (4); The back side of the groove head block (5) is symmetrically provided with a limit groove (7) adapted to the limit block (6), and the limit block (6) is slidably arranged on the limit groove (7); One side of the groove head block (5) is in contact with the back plate (4).

3. The high-efficiency and high-durability iron outlet channel according to claim 1, characterized in that: A stopper (2) is cast at the bottom end of the inner wall of the outer shell (3), and a surface of the stopper (2) close to the back plate (4) is in contact with a surface of the groove head block (5) away from the back plate (4).

4. The high-efficiency and high-durability iron outlet channel according to claim 1, characterized in that: The sand and gravel layer filled in the gap cavity (9) fills the space formed by the bottom surface of the outer shell (3), the lower surface of the groove head block (5), the back plate (4) and the stopper (2). The highest point of the sandstone layer is lower than the upper surface of the ditch head block (5).

5. The high-efficiency and high-durability iron outlet channel according to claim 1, characterized in that: Grooves (8) are provided on the upper surfaces of the groove head block (5) and the extension block (1).

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