Descaling box capable of replacing descaling header on line

Abstract

The descaling box comprises a roller way frame and a descaling box body, the descaling box body is arranged on the roller way frame, a descaling inlet and a descaling outlet are formed in the descaling box body, the descaling inlet and the descaling outlet are oppositely arranged, and a plurality of rollers are arranged on the roller way frame at intervals, so that a roller way is formed on the roller way frame; steel billets are transported; the descaling box body is composed of a front descaling box body, a header box body and a rear descaling box body in the running direction of a steel billet, the header box body is located between the two adjacent rollers, two descaling headers of different specifications are arranged in the header box body, the two descaling headers are arranged in a left-right side-by-side spaced mode, a partition plate is arranged between the two descaling headers, and the partition plate is located between the front descaling box body and the rear descaling box body. A plurality of nozzles are arranged on each descaling header; and meanwhile, the header box body can move left and right, so that when steel billets with different sizes are descaled, the header box body can be moved left and right to replace corresponding descaling headers for descaling. When the descaling collecting pipe is replaced, production stopping is not needed, and the production efficiency can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical engineering, relates to a descaling box, and in particular to a descaling box capable of replacing a descaling header online. Background Art

[0002] The hot rolling production line for hot-rolled bars and profiles in a steel plant needs to roll bars and profiles of various sizes and specifications, that is, it needs to roll billets of various sizes and specifications. The billet is oxidized at high temperature, and a dense layer of iron oxide scale will form on its surface. If this layer of iron oxide scale cannot be removed before rolling, it will affect the surface quality of the finished product during the rolling process. Therefore, the iron oxide scale on the surface must be removed before the billet is rolled. At present, a descaling box is usually set behind the furnace, and a descaling manifold is provided in the descaling box, and a number of descaling nozzles are set on the descaling manifold to remove the iron oxide scale on the surface of the billet by the mechanical impact force of the high-pressure water sprayed out. In order to ensure the impact force required for descaling, it is necessary to ensure the descaling spray height, so billets of different sizes require descaling manifolds of different sizes.

[0003] At present, when descaling steel billets of different sizes, the descaling manifold is usually replaced. However, the descaling manifold replacement operation is very troublesome. First, production needs to be stopped, and then the descaling manifold is replaced. At the same time, replacing the descaling manifold generally takes 2 to 4 hours, which seriously affects production efficiency. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a descaling box capable of replacing the descaling manifold online. The present invention does not require production to be stopped when replacing the descaling manifold, which is conducive to improving production efficiency.

[0005] The technical solution of the present invention is achieved in this way: A descaling box with an online replaceable descaling manifold comprises a roller frame and a descaling box body, wherein the descaling box body is arranged on the roller frame, and a descaling inlet and a descaling outlet are arranged on the descaling box body, and the descaling inlet and the descaling outlet are arranged opposite to each other. A plurality of rollers are arranged on the roller frame at intervals, thereby forming a roller table on the roller frame for transporting steel billets.

[0006] Along the running direction of the steel billet, the descaling box is composed of a front descaling box, a manifold box and a rear descaling box. The manifold box is located between two adjacent rollers, and two descaling manifolds of different specifications are arranged in the manifold box. The two descaling manifolds are arranged side by side and spaced apart from each other. A partition is provided between the two descaling manifolds. Each descaling manifold is provided with a plurality of nozzles, and each descaling manifold is connected to a high-pressure pipeline through a high-pressure hose to introduce high-pressure water. At the same time, the manifold box can be moved left and right, which is convenient for descaling steel billets of different sizes. The manifold box can be moved left and right to replace the corresponding descaling manifold for descaling.

[0007] Furthermore, the length of the front descaling box is greater than that of the rear descaling box, and a plurality of water retaining chains are respectively disposed in the front descaling box and the rear descaling box.

[0008] Furthermore, the manifold box is moved left and right by a driving guide mechanism, the driving guide mechanism includes a hydraulic cylinder and two groups of guide assemblies, the two groups of guide assemblies are respectively arranged on the left and right sides of the manifold box, the guide assembly includes a support seat, a guide column and a guide cylinder horizontally arranged on the support seat, the guide cylinder cooperates with the guide column, the guide column is horizontally arranged and one end of the guide column is connected and fixed to the manifold box, and the other end is inserted into the corresponding guide cylinder, the hydraulic cylinder is connected to one of the guide columns, so as to drive the guide column to move left and right along the guide cylinder, thereby realizing the movement of the manifold box.

[0009] Furthermore, the guide column is square.

[0010] Furthermore, a manual valve is provided at the connection between the high-pressure hose and the high-pressure pipeline to facilitate manual control of the opening and closing of the manual valve.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The descaling box of the present invention has two descaling manifold stations, one of which is a descaling station and the other is a descaling manifold maintenance station. When descaling the steel billet, the manifold box is moved, and the descaling manifold on the descaling station is used to descale the steel billet. At this time, the descaling manifold specifications can be determined according to the specifications of the next batch of steel billets to be descaled, so that the descaling manifold of the corresponding specifications can be replaced at the descaling manifold maintenance station. When the batch of steel billets needs to be descaled, the manifold box is directly moved and the descaling manifold is switched, and there is no need to stop production, which is conducive to improving production efficiency.

[0012] 2. The guide column of the guide assembly of the present invention is square, and the guide cylinder matched with the guide column has a square hole, that is, a square guide is adopted, and there is surface contact during the guiding process, which can effectively limit the movement of the manifold box from four directions of left, right, up and down, thereby ensuring the stability of the movement of the manifold box. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 -Schematic diagram of the structure of the present invention.

[0014] Figure 2-Figure 1 AA cross-section diagram.

[0015] Figure 3-Figure 1 BB cross-section diagram.

[0016] Figure 4-Figure 3 CC cross-section diagram.

[0017] Among them: 1-roller frame; 2-roller; 3-steel billet; 4-rear descaling box; 5-manifold box; 6-descaling manifold; 7-water retaining chain; 8-front descaling box; 9-high-pressure hose; 10-guide cylinder; 11-guide column; 12-manual valve; 13-nozzle; 14-partition. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A descaling box with an online replaceable descaling manifold comprises a roller frame 1 and a descaling box body, wherein the descaling box body is arranged on the roller frame 1, and a descaling inlet and a descaling outlet are arranged on the descaling box body, and the descaling inlet and the descaling outlet are arranged oppositely, and a plurality of rollers 2 are arranged at intervals on the roller frame 1, thereby forming a roller table on the roller frame for transporting steel billets 3.

[0020] Along the billet running direction ( Figure 1 The arrow direction in the figure is the running direction of the billet), the descaling box is composed of a front descaling box 8, a manifold box 5 and a rear descaling box 4, the manifold box 5 is located between two adjacent rollers 2, and two descaling manifolds 6 of different specifications are arranged in the manifold box 5, the two descaling manifolds 6 are arranged side by side and spaced apart, a partition 14 is arranged between the two descaling manifolds 6, each descaling manifold 6 is provided with a plurality of nozzles 13, and each descaling manifold 6 is connected to a high-pressure pipeline through a high-pressure hose 9 to introduce high-pressure water; at the same time, the manifold box 5 can be moved left and right, so that when descaling billets of different sizes, the manifold box 5 can be moved left and right to replace the corresponding descaling manifold 6 for descaling.

[0021] In this way, the descaling box has two descaling manifold stations, one of which is the descaling station and the other is the descaling manifold maintenance station. When descaling the billet, the manifold box is moved, and the descaling manifold on the descaling station is used to descale the billet. At this time, the descaling manifold specifications can be determined according to the specifications of the next batch of billets to be descaled, so that the descaling manifold of the corresponding specifications can be replaced at the descaling manifold maintenance station. When the batch of billets needs to be descaled, the manifold box is directly moved and the descaling manifold is switched, without stopping production, which is conducive to improving production efficiency.

[0022] In a specific implementation, the length of the front descaling box 8 is greater than that of the rear descaling box 4 , and a plurality of water retaining chains 7 are respectively disposed in the front descaling box 8 and the rear descaling box 4 .

[0023] Because there is more descaling water and iron oxide in front of the descaling header after descaling, and less descaling water and iron oxide splashed behind the descaling header, the length of the front descaling box is longer, and the rear descaling box is set shorter. At the same time, in order to prevent descaling water and iron oxide from entering the heating furnace, multiple sets of water retaining chains should be set in the front descaling box to ensure the water retaining effect.

[0024] In specific implementation, the manifold box 5 is moved left and right by driving the guide mechanism, which includes a hydraulic cylinder and two sets of guide assemblies, which are respectively arranged on the left and right sides of the manifold box 5, and the guide assembly includes a support seat, a guide column 11 and a guide cylinder 10 horizontally arranged on the support seat, and the guide cylinder 10 cooperates with the guide column 11, which is arranged horizontally and one end of the guide column 11 is connected and fixed to the manifold box 5, and the other end is inserted into the corresponding guide cylinder 10, and the hydraulic cylinder is connected to one of the guide columns 11, so as to drive the guide column to move left and right along the guide cylinder 10, thereby realizing the movement of the manifold box 5. At the same time, the guide column 11 is square, and correspondingly, a square hole corresponding to the guide column is provided in the guide cylinder 10.

[0025] Here, the guide components on the left and right sides of the manifold box not only play a guiding role, but also play a supporting role for the manifold box, so when setting, the guide cylinder and the guide column have a certain length to ensure the supporting effect. The guide column is set to be square, and correspondingly, the guide cylinder has a directional hole corresponding to the guide column, so that the movement of the manifold box can be restricted from four directions: left, right, up and down. The force contact point of the square guide is surface contact, avoiding the line contact of the circular guide, thereby effectively ensuring the stability of the movement of the manifold box. When the manifold box is adjusted into place, it is locked by the hydraulic valve of the hydraulic cylinder, thereby restricting the left and right movement of the manifold box.

[0026] During specific implementation, a manual valve 12 is provided at the connection between each high-pressure hose 9 and the high-pressure pipeline, which is convenient for manually controlling the opening and closing of the manual valve 12, thereby switching the water inlet state of the descaling manifold, that is, the manual valve corresponding to the descaling station is opened, and the manual valve corresponding to the descaling manifold maintenance station is closed.

[0027] Finally, it should be noted that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A descaling box capable of replacing a descaling manifold online, comprising a roller frame and a descaling box body, wherein the descaling box body is arranged on the roller frame, and a descaling inlet and a descaling outlet are arranged on the descaling box body, wherein the descaling inlet and the descaling outlet are arranged opposite to each other, and a plurality of rollers are arranged on the roller frame at intervals, thereby forming a roller frame on the roller frame for transporting steel billets; characterized in that: Along the running direction of the steel billet, the descaling box is composed of a front descaling box, a manifold box and a rear descaling box. The manifold box is located between two adjacent rollers, and two descaling manifolds of different specifications are arranged in the manifold box. The two descaling manifolds are arranged side by side and spaced apart from each other. A partition is provided between the two descaling manifolds. Each descaling manifold is provided with a plurality of nozzles, and each descaling manifold is connected to a high-pressure pipeline through a high-pressure hose to introduce high-pressure water. At the same time, the manifold box can be moved left and right, which is convenient for descaling steel billets of different sizes. The manifold box can be moved left and right to replace the corresponding descaling manifold for descaling.

2. A descaling box capable of replacing descaling manifolds online according to claim 1, characterized in that: The length of the front descaling box is greater than that of the rear descaling box, and a plurality of water retaining chains are respectively disposed in the front descaling box and the rear descaling box.

3. A descaling box capable of replacing descaling manifolds online according to claim 1 or 2, characterized in that: The collecting box body is moved left and right by driving a guiding mechanism. The driving guiding mechanism includes a hydraulic cylinder and two groups of guiding assemblies. The two groups of guiding assemblies are respectively arranged on the left and right sides of the collecting box body. The guiding assembly includes a support seat, a guide column and a guide cylinder horizontally arranged on the support seat. The guide cylinder cooperates with the guide column. The guide column is horizontally arranged and one end of the guide column is connected and fixed to the collecting box body, and the other end is inserted into the corresponding guide cylinder. The hydraulic cylinder is connected to one of the guide columns to facilitate driving the guide column to move left and right along the guide cylinder, thereby realizing the movement of the collecting box body.

4. A descaling box capable of replacing descaling manifolds online according to claim 3, characterized in that: The guide column is square.

5. A descaling box capable of replacing descaling manifolds online according to claim 1, characterized in that: A manual valve is provided at the connection between the high-pressure hose and the high-pressure pipeline to facilitate manual control of the opening and closing of the manual valve.

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