Sealing cover plate for blast furnace casting house

Abstract

The utility model belongs to the technical field of blast furnace smelting, and particularly relates to a blast furnace casting house sealing cover plate which is characterized by comprising a top plate, a groove seat, a hoisting assembly, castable and reinforcing ribs, the top of the groove seat formed by welding steel plates is connected with the top plate, the groove seat is filled with the castable, and the reinforcing ribs are arranged on the inner side of the top plate. One side, in the laying length direction, of the top plate extends outwards, the other side of the top plate is provided with a step, during laying, the extending part is matched with the step on the adjacent cover plate, a lap joint sealing structure is formed in the laying direction of the top plate on the blast furnace casting house branch channel, and the two sides, corresponding to the direction perpendicular to the blast furnace casting house branch channel, of the groove base are each provided with an inclined face; and the angle of the inclined surface is matched with the inclination angle of the groove edge on the concrete side wall. The cover plate has the advantages that the adjacent cover plates form the lap joint structure, the sealing function is achieved through the lap joint parts at the joints of the cover plates, the application requirement of a casting house is met, the heat insulation effect is excellent, the weight is light, and construction is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of blast furnace smelting, and in particular relates to a sealing cover plate for a blast furnace tapping site. Background Art

[0002] In the iron and steel metallurgical production, a large amount of smoke and dust will be produced during the iron-making process of the blast furnace, which will pollute the environment around the iron-making site and affect the health of front-line operators. Based on this situation, the main ditch of the iron-making site has been equipped with dust hoods or fully enclosed dust removal bins, and the dust removal effect of the main ditch has been significantly improved. However, in the branch iron ditch and slag ditch area, the dust removal method of the main ditch cannot be directly used due to factors such as the flatness of the iron-making site. At present, traditional cover plates are generally used to remove dust in the branch iron ditch and slag ditch area of ​​the iron-making site. The traditional cover plate not only has poor thermal insulation effect, but also has a gap of about 20mm between the cover plates, and some smoke and dust still float out of the gap. With the improvement of technology, some steel companies have sealed the gaps between traditional cover plates with refractory fiber felt or other refractory materials. Although this has solved the sealing problem and improved the environment around the iron-making site, the cover plate needs to be moved for maintenance of the slag and iron ditch, and the sealing material between the cover plate gaps must be removed, which increases the workload of maintenance. Therefore, many steel companies are troubled by the problem that the cover can be effectively sealed and can be moved quickly and conveniently during maintenance.

[0003] The Chinese utility model patent with application number 202320617191.0 discloses an environmentally friendly and long-life blast furnace slag iron trench cover, which includes a plurality of cover plate monomers spliced ​​together, the cover plate monomers include a cover plate shell, the bottom of the cover plate shell is provided with a long strip opening, the inner cavity of the cover plate shell is provided with a grid-like rib plate, the surface of the grid-like rib plate and the inner surface of the top of the cover plate shell are provided with anchor nails, the space separated by the grid-like rib plate is filled with refractory material, a support net is provided at the long strip opening, and heat insulation cotton is provided between the support net and the refractory material, and a groove is provided on the upper surface of the joint of two adjacent cover plate monomers, and a sealing strip is provided in the groove. The utility model seals between the two cover plates through a sealing strip to reduce smoke and dust spillage and achieve environmental protection, but during the maintenance process, the sealing strip is easily displaced or lost, and the long-term sealing effect cannot be guaranteed. Utility Model Content

[0004] The utility model aims to provide a sealing cover plate for a blast furnace iron-making yard, which overcomes the shortcomings of the prior art, forms a staggered tooth structure between adjacent cover plates, and plays a sealing role by relying on the staggered teeth on the upper edges of the cover plate connections, thereby meeting the application requirements of the iron-making yard, ensuring safety and environmental protection during use, and tightly sealing the slag and iron grooves in the blast furnace iron-making yard; and can also realize rapid movement and replacement of the cover plates during maintenance, thereby achieving the effect of convenient maintenance.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A sealing cover plate for a blast furnace iron-casting yard, characterized in that it includes a top plate, a slot seat, a hanging assembly, castables and reinforcing ribs, the top plate is connected to the top of the slot seat welded from steel plates, the slot seat is filled with castables, reinforcing ribs are arranged on the inner side of the top plate, one side of the top plate protrudes outward along the laying length direction, and the other side is a step, when laid, the protruding part matches the step on the adjacent cover plate, and an overlapping sealing structure is formed along the laying direction on the branch ditch of the blast furnace iron-casting yard, the slot seat is respectively provided with inclined surfaces on both sides corresponding to the direction perpendicular to the branch ditch of the blast furnace iron-casting yard, and the angle of the inclined surface matches the inclination angle of the ditch edge on the concrete side wall.

[0007] Furthermore, the cover plate is a steel component of standard size, and the four lifting components are symmetrically arranged along the diagonal line of the sealing cover plate.

[0008] Furthermore, an anchoring nail is provided in the castable, and the anchoring nail is V-shaped and is formed by bending a steel bar with a diameter of 8 mm.

[0009] Furthermore, the hoisting assembly is a box body with an open top, and round steel is arranged inside the box body.

[0010] Furthermore, the castable has a thickness of 100-130 mm.

[0011] Furthermore, the overlapping width of the steps is not less than 50 mm.

[0012] Furthermore, a graphite sealing gasket is pasted on the bottom of the top plate of the externally protruding part, and the thickness of the graphite sealing gasket is not less than 3 mm.

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

[0014] 1) Adjacent cover plates form an overlapping structure, which relies on the overlapping part of the cover plate connection to play a sealing role, meeting the application requirements of the iron-making yard. Under the premise of ensuring strength, the structure with castables has excellent insulation effect, light weight and convenient construction.

[0015] 2) It can ensure safety and environmental protection during use, and the slag and iron groove of the blast furnace iron-making yard are tightly sealed; it can also achieve rapid movement and replacement of the cover during maintenance, achieving the effect of convenient maintenance, and providing a new, reasonable, convenient and effective solution for the smoke control of the blast furnace iron-making yard. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of splicing two embodiments of the utility model;

[0017] Figure 2 This is a schematic structural diagram of a single embodiment of a sealing cover plate for a blast furnace iron-making site of the utility model;

[0018] Figure 3 yes Figure 2A top view of

[0019] Figure 4 It is a schematic diagram of the combination of the embodiment of the utility model and the groove edge;

[0020] Figure 5 This is a schematic diagram of the structure of the hoisting assembly in the embodiment of the utility model;

[0021] In the figure: 1-top plate, 2-slot seat, 3-lifting assembly, 4-casting material, 5-reinforcement rib, 6-outer probe, 7-step, 8-groove edge, 9-graphite sealing gasket, 10-round steel. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.

[0024] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.

[0025] See Figure 1-Figure 4 , is a schematic diagram of the structure of a sealing cover plate of a blast furnace iron-making field according to the utility model, including a top plate 1, a slot seat 2, a hoisting assembly 3, a castable 4 and a reinforcing rib 5. The top of the slot seat 2 welded by steel plates is connected to the top plate 1, and the slot seat 2 is filled with a castable 4. In order to ensure heat resistance, the castable 4 is 120 mm thick. A reinforcing rib 5 is arranged on the inner side of the top plate 1, and an anchoring nail is also arranged in the castable. The anchoring nail is V-shaped and is made of 8 mm diameter steel bars bent.

[0026] The top plate 1 has an outward extension 6 on one side along the laying length direction and a step 7 on the other side. When laying, the outward extension 6 matches the step 7 on the adjacent cover plate, and the overlapping width of the step 7 is 50mm. An overlapping sealing structure is formed along the laying direction on the branch ditch of the blast furnace iron-making field. A graphite sealing gasket 9 is pasted on the bottom of the top plate 1 of the outward extension 6, and the thickness of the graphite sealing gasket 9 is not less than 3mm.

[0027] See Figure 5 The hoisting assembly 3 is a box body with an open top, and a round steel 10 is arranged in the box body.

[0028] The cover plate of the utility model is a standard-sized steel component, which has the advantage that it can be used and installed at will without considering the size matching problem, so the disassembly and assembly efficiency is high and no additional maintenance workload is added. The specific size of the cover plate must match the width of the blast furnace slag and the iron ditch. The lifting assembly 3 must be sunk below the top plate to ensure that the surface of the top plate is flat. The number of lifting assemblies on each cover plate must be adapted to the specific length of the cover plate. The four lifting assemblies 3 are symmetrically arranged along the diagonal of the sealing cover plate to ensure the stability of the crane when it moves.

[0029] During construction, the cover plates should be installed in sequence along the length of the branch ditch of the blast furnace iron-casting yard. During normal working conditions, all adjacent cover plates are in an overlapping state. The groove seat 2 is provided with inclined surfaces on both sides corresponding to the direction perpendicular to the branch ditch of the blast furnace iron-casting yard. The angle of the inclined surface matches the inclination angle of the ditch edge 8 on the concrete side wall, so that better sealing effect can be ensured on all sides.

[0030] Although the 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 sealing cover plate for a blast furnace casting house, characterized in that: It includes a top plate, a slot seat, a hanging assembly, castables and reinforcing ribs. The top plate is connected to the top of the slot seat welded from steel plates. The slot seat is filled with castables. Reinforcing ribs are arranged on the inner side of the top plate. One side of the top plate protrudes outward along the laying length direction, and the other side is a step. When laying, the protruding part matches the step on the adjacent cover plate, and an overlapping sealing structure is formed along the laying direction on the branch ditch of the blast furnace iron-making yard. The slot seat is provided with inclined surfaces on both sides corresponding to the direction perpendicular to the branch ditch of the blast furnace iron-making yard, and the angle of the inclined surface matches the inclination angle of the ditch edge on the concrete side wall.

2. A sealing cover plate for a blast furnace casting house according to claim 1, characterized in that: The cover plate is a standard size steel component, and the four lifting components are symmetrically arranged along the diagonal line of the sealed cover plate.

3. The sealing cover plate for a blast furnace casting house according to claim 1, characterized in that: Anchor nails are arranged in the castable material. The anchor nails are V-shaped and are formed by bending steel bars with a diameter of 8 mm.

4. The sealing cover plate for a blast furnace casting house according to claim 1, characterized in that: The hoisting assembly is a box body with an open top, and round steel is arranged inside the box body.

5. The sealing cover plate for a blast furnace casting house according to claim 1, characterized in that: The thickness of the castable is 100-130 mm.

6. The sealing cover plate for a blast furnace casting house according to claim 1, characterized in that: The overlapping width of the steps shall not be less than 50 mm.

7. The sealing cover plate for a blast furnace casting house according to claim 1, characterized in that: A graphite sealing gasket is pasted on the bottom of the top plate of the externally protruding part, and the thickness of the graphite sealing gasket is not less than 3 mm.

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