Blast furnace distribution chute

Abstract

The utility model relates to a blast furnace distribution chute in the technical field of metallurgical ironmaking, which comprises a chute body, a plurality of transverse ribs and a plurality of longitudinal ribs are arranged on the inner wall of the chute body; wear-resistant lining plates are arranged on the transverse ribs and the longitudinal ribs in a matched manner; the blast furnace material distribution chute is safe and reliable to use, furnace charge is prevented from directly erosive wear on the chute, the firmness and wear resistance of the blast furnace material distribution chute are improved, the service life is prolonged, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy and ironmaking, in particular to a blast furnace material distribution chute. Background Art

[0002] The blast furnace charging chute is a key equipment for charging during the blast furnace ironmaking process. It is usually located at the top of the blast furnace and is the last channel for the charge to enter the blast furnace body. The charge is evenly distributed to various parts of the upper part of the blast furnace through the rotation of the charging chute. The charging chute will be subjected to strong impact and wear from the high-temperature raw materials during operation, especially when the charge enters the charging chute, the impact force is concentrated at one point, resulting in increased wear of the charging chute. In addition, the traditional design of the charging chute is mostly one-piece casting. Once a part is severely worn, it often needs to be replaced as a whole, which is time-consuming, labor-intensive and increases costs. Utility Model Content

[0003] In order to overcome the above defects, the utility model provides a blast furnace distribution chute, which is safe and reliable to use, avoids direct scouring and wear of the chute by the charge, improves the sturdiness and wear resistance of the blast furnace distribution chute, prolongs its service life, and reduces production costs.

[0004] To achieve the above-mentioned purpose, the utility model provides a blast furnace distribution chute, including a chute body, wherein the inner wall of the chute body is provided with transverse ribs and longitudinal ribs, and the transverse ribs and longitudinal ribs are provided in plurality; the transverse ribs and longitudinal ribs are also provided with wear-resistant linings.

[0005] When the utility model is working, the charge enters the blast furnace distribution chute. Due to the high temperature of the charge, the wear-resistant lining and the wear-resistant strip are impacted and worn, so as to prevent the charge from directly scouring and wearing the chute body; a slide groove is arranged on the wear-resistant lining, and the wear-resistant strip can slide into the slide groove arranged on the wear-resistant lining, and the length of the slide groove is less than the length of the wear-resistant lining, so as to prevent the wear-resistant strip from sliding with the charge, and the wear-resistant strip that fails due to wear can be disassembled and replaced separately, so as to reduce the production cost; transverse ribs and longitudinal ribs are arranged on the inner wall of the chute body, which are cross-distributed to form grooves to separate the wear-resistant lining and the chute body, and a heat-insulating space is formed between them, so that the high heat generated when the wear-resistant lining is scoured can be dissipated in the heat-insulating space, so as to prevent the chute body from being deformed due to overheating; an anti-skid layer is also arranged on the surface of the wear-resistant lining, so as to prevent the rolling of the charge from affecting the stability of the distribution chute; the distribution chute can be used continuously for a long time, effectively reduce the degree of wear, and save costs.

[0006] The beneficial effects of the utility model are as follows: a blast furnace distribution chute, which is safe and reliable to use, avoids direct scouring and wear of the chute by furnace charge, improves the firmness and wear resistance of the blast furnace distribution chute, prolongs its service life, and reduces production costs.

[0007] As a further improvement of the present invention, in order to ensure that the transverse ribs and the longitudinal ribs cooperate better to form an insulating space and avoid deformation of the chute body due to overheating; the transverse ribs are arranged perpendicular to the feeding direction of the chute body; the longitudinal ribs are arranged horizontally along the feeding direction of the chute body; the transverse ribs and the longitudinal ribs intersect with each other and are distributed in a "well" shape to form grooves.

[0008] As a further improvement of the utility model, in order to improve the wear resistance of the wear-resistant lining, a slide groove is arranged on the wear-resistant lining, and the slide groove is parallel to the setting direction of the longitudinal ribs; a wear-resistant strip is also arranged on the wear-resistant lining, and the wear-resistant strip can slide into the slide groove arranged on the wear-resistant lining; a plurality of wear-resistant strips and slide grooves are arranged.

[0009] As a further improvement of the utility model, in order to ensure the installation connection between the wear-resistant lining and the transverse rib, mounting holes are provided at both ends of the transverse rib; bolts are provided on the wear-resistant lining; the wear-resistant lining is fixedly installed on the transverse rib by driving the bolts into the mounting holes.

[0010] As a further improvement of the utility model, in order to prevent the wear-resistant strips from sliding with the charge, the worn wear-resistant strips can be disassembled and replaced separately to reduce production costs; the length of the wear-resistant strips is consistent with the length of the slide groove, and the length of the slide groove is less than the length of the wear-resistant lining; the wear-resistant strips can be disassembled and replaced separately after being worn.

[0011] As a further improvement of the present invention, in order to enhance the anti-skid performance of the surface of the wear-resistant lining plate and prevent the rolling of the charge from affecting the stability of the distribution chute, an anti-skid layer is further provided on the surface of the wear-resistant lining plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings:

[0013] Figure 1 It is a three-dimensional diagram of the utility model.

[0014] Figure 2 This is a structural diagram of the chute of the present utility model.

[0015] Figure 3 It is a cross-sectional view of the utility model.

[0016] Figure 4 For the utility model Figure 1 Enlarged view of point A in the middle.

[0017] Among them, 1 is the chute body, 2 is the transverse rib, 3 is the longitudinal rib, 4 is the wear-resistant lining, 5 is the slide groove, 6 is the groove, 7 is the mounting hole, 8 is the bolt, 9 is the wear-resistant strip, and 10 is the anti-slip layer. DETAILED DESCRIPTION

[0018] like Figure 1-4 As shown, in order to achieve the above-mentioned purpose, the utility model provides a blast furnace charging chute, including a chute body 1, on the inner wall of which transverse ribs 2 and longitudinal ribs 3 are arranged, and the transverse ribs 2 and longitudinal ribs 3 are arranged in plurality; the transverse ribs 2 and longitudinal ribs 3 are also provided with wear-resistant lining plates 4; the transverse ribs 2 are arranged perpendicular to the feeding direction of the chute body 1; the longitudinal ribs 3 are arranged horizontally along the feeding direction of the chute body 1; the transverse ribs 2 and longitudinal ribs 3 are intersected with each other and are distributed in a "well" shape to form a groove 6; the wear-resistant lining plate 4 is provided with a chute 5, and the chute 5 and the longitudinal ribs 3 are arranged in a square. parallel to the direction; the wear-resistant lining plate 4 is also provided with a wear-resistant strip 9, which can slide into the slide groove 5 provided on the wear-resistant lining plate 4; the wear-resistant strip 9 and the slide groove 5 are both provided with a plurality of them; mounting holes 7 are provided at both ends of the transverse rib 2; the wear-resistant lining plate 4 is provided with bolts 8; the wear-resistant lining plate 4 is fixedly installed on the transverse rib 2 by driving the bolts 8 into the mounting holes 7; the length of the wear-resistant strip 9 is consistent with the length of the slide groove 5, and the length of the slide groove 5 is less than the length of the wear-resistant lining plate 4; the wear-resistant strip 9 can be disassembled and replaced separately after being worn; the surface of the wear-resistant lining plate 4 is also provided with an anti-slip layer 10.

[0019] When the utility model is working, the charge enters the blast furnace distribution chute. Due to the high temperature of the charge, the wear-resistant lining plate 4 and the wear-resistant strip 9 are impacted and worn, so as to prevent the charge from directly scouring and wearing the chute body 1; the wear-resistant lining plate 4 is provided with a slide groove 5, and the wear-resistant strip 9 can slide into the slide groove 5 provided on the wear-resistant lining plate 4, and the length of the slide groove 5 is less than the length of the wear-resistant lining plate 4, so as to prevent the wear-resistant strip from sliding with the charge, and the wear-resistant strip that fails due to wear can be disassembled and replaced separately, so as to reduce the production cost; the chute body 1 is provided with transverse ribs 2 and longitudinal ribs 3, which are cross-distributed to form grooves 6, separating the wear-resistant lining plate 4 from the chute body 1, and forming a heat-insulating space between them, so that the high heat generated by the wear-resistant lining plate 4 when being washed can be dissipated in the heat-insulating space, avoiding the deformation of the chute body 1 due to overheating; the surface of the wear-resistant lining plate 4 is also provided with an anti-slip layer 10 to prevent the rolling of the furnace charge from affecting the stability of the distribution chute; the distribution chute can be used for a long time, effectively reducing the degree of wear and saving costs.

[0020] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A blast furnace distribution chute, comprising a chute body (1), characterized in that: The inner wall of the chute body (1) is provided with transverse ribs (2) and longitudinal ribs (3), and a plurality of the transverse ribs (2) and longitudinal ribs (3) are provided; and the transverse ribs (2) and longitudinal ribs (3) are also provided with wear-resistant lining plates (4).

2. A blast furnace distribution chute according to claim 1, characterized in that: The transverse ribs (2) are arranged perpendicularly to the material conveying direction of the chute body (1); the longitudinal ribs (3) are arranged horizontally along the material conveying direction of the chute body (1); the transverse ribs (2) and the longitudinal ribs (3) intersect with each other and are arranged in a "well" shape to form recesses (6).

3. The blast furnace distribution chute according to claim 1, characterized in that: The wear-resistant lining (4) is provided with a slide groove (5), and the slide groove (5) is arranged in a direction parallel to the longitudinal rib (3); the wear-resistant lining (4) is also provided with a wear-resistant strip (9), and the wear-resistant strip (9) can slide into the slide groove (5) arranged on the wear-resistant lining (4); a plurality of the wear-resistant strips (9) and the slide groove (5) are provided.

4. A blast furnace distribution chute according to claim 2 or 3, characterized in that: Both ends of the transverse rib (2) are provided with mounting holes (7); the wear-resistant lining plate (4) is provided with bolts (8); the wear-resistant lining plate (4) is driven into the mounting holes (7) by the bolts (8) and is fixedly mounted on the transverse rib (2).

5. The blast furnace distribution chute according to claim 3, characterized in that: The length of the wear-resistant strip (9) is consistent with that of the slide groove (5), and the length of the slide groove (5) is shorter than the length of the wear-resistant lining plate (4); the wear-resistant strip (9) can be disassembled and replaced separately after being worn.

6. The blast furnace distribution chute according to claim 1, characterized in that: The surface of the wear-resistant lining plate (4) is also provided with an anti-slip layer (10).

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