Cooling device for roughing roller way

Abstract

The utility model relates to a cooling device for a roughing roller way, which comprises a water supply pipe, a middle pipeline, a cooling water pipe I and a cooling water pipe II, and the water supply pipe is divided into two paths which are respectively connected with the middle pipeline and a water supply branch pipe; the first cooling water pipe is arranged above a roller neck on one side of the roller way, and the second cooling water pipe is arranged above a roller neck on the other side of the roller way. The water supply branch pipe is connected with the first cooling water pipe, the second cooling water pipe is connected with the middle pipeline, and water spraying holes are formed in the first cooling water pipe and the second cooling water pipe. The cooling device has the advantages that the structure is simple and reasonable, an existing cooling device can be conveniently transformed, the cooling effect is improved, the cooling water pipe is arranged above the roller way, cooling above the roller neck is achieved, the blocking probability and energy consumption are reduced, accidents are reduced, and the maintenance difficulty is reduced. The water spraying holes are formed in the lower portion of the pipe wall side of the cooling water pipe, the blocking probability and energy consumption are reduced, and accidents are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of hot rolling conveying rollers, in particular to a cooling device for a rough rolling roller. Background Art

[0002] The hot rolling roughing roller is the key equipment for the transmission of slabs in the rolling line. The roller is located behind the roughing mill and under the insulation cover. It is used to receive the slabs transported by the outlet working roller and transport them to the next rolling process. Figure 1 The existing roller cooling method is roller neck cooling, which sprays cooling water on the roller neck from bottom to top to cool it down. As in the prior art, patent application number: 201920879129.2 discloses a hot rolling conveyor roller and its cooling device. During the cooling process, because the water contains a large amount of impurities, as the roller runs for a long time, the accumulation of impurities inside the cooling water pipe causes slag to often hang in the water outlet, and the roller cooling water is blocked and the spray angle is skewed, causing the roller surface to be unable to be effectively cooled and the roller bearings to overheat and lock, eventually leading to dead rollers and motor burning accidents; in addition, the cooling water splashes onto the surface of the intermediate billet, affecting the quality of the slab and failing to meet production needs. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a cooling device for a rough rolling roller table, which reduces the probability of blockage and energy consumption, reduces the occurrence of accidents, facilitates maintenance, and meets the production needs of the rough rolling line.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A cooling device for a rough rolling roller table, comprising a water supply pipe, an intermediate pipeline, a first cooling water pipe and a second cooling water pipe. The water supply pipe is divided into two paths and respectively connected with the intermediate pipeline and the water supply branch pipe; the first cooling water pipe is arranged above the roll neck on one side of the roller table, and the second cooling water pipe is arranged above the roll neck on the other side of the roller table; the water supply branch pipe is connected with the first cooling water pipe, and the second cooling water pipe is connected with the intermediate pipeline. Water spray holes are opened on the first cooling water pipe and the second cooling water pipe.

[0006] The intermediate pipeline is arranged on the top of the heat preservation cover above the roller table.

[0007] A switch valve is provided at the connection between the water supply pipe and the cooling water supply system.

[0008] The water spray holes are arranged below the pipe wall sides of the first cooling water pipe and the second cooling water pipe, and are arranged opposite to the roll neck.

[0009] The water supply pipe is connected with a sewage valve.

[0010] The cooling water pipe 1 and the cooling water pipe 2 are both connected with a stop valve.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The cooling device for the rough rolling roller has a simple and reasonable structure, which is convenient for the modification of the existing cooling device and improves the cooling effect. The cooling water pipe is placed above the roller to achieve cooling above the roller neck, which reduces the probability of blockage and energy consumption, reduces the occurrence of accidents, and reduces the difficulty of maintenance. The water spray hole is set below the wall side of the cooling water pipe, which reduces the probability of blockage and energy consumption, and reduces the occurrence of accidents. The cooling water pipe is installed above the roller, which is convenient for daily maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation position of the original roller cooling device.

[0014] Figure 2 It is a schematic diagram of the structure of the cooling device for the rough rolling roller.

[0015] Figure 3 This is a schematic diagram of the location of the water spray holes.

[0016] Figure 4 It is a schematic diagram of the structure of the cooling water pipe.

[0017] Figure 5 It is a schematic diagram of the cross section of the cooling water pipe.

[0018] In the figure: 1- switch valve 2- water supply pipe 3- intermediate pipeline 4- cooling water pipe 1 5- guide plate 6- insulation cover 7- roller table 8- roll neck 9- water spray hole 10- cooling water pipe 2 11- drain valve 12- stop valve. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the accompanying drawings of the specification, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0020] See Figure 2 A cooling device for a rough rolling roller table, comprising a water supply pipe 2, an intermediate pipeline 3, and a cooling water pipe. The water supply pipe 2 is divided into two paths and connected to the intermediate pipeline 3 and the water supply branch pipe respectively; the cooling water pipe is arranged along the conveying direction of the roller table 7, and the cooling water pipe comprises a cooling water pipe 1 4 and a cooling water pipe 2 10. The cooling water pipe 1 4 is arranged above the roll neck 8 on one side of the roller table 7, and the cooling water pipe 2 10 is arranged above the roll neck 8 on the other side of the roller table 7; the water supply branch pipe is connected to the cooling water pipe 1 4, and the cooling water pipe 2 10 is connected to the intermediate pipeline 3. The cooling water pipe 1 4 and the cooling water pipe 2 10 are both provided with water spray holes 9. The intermediate pipeline 3 is arranged on the top of the heat preservation cover 6 above the roller table 7 to prevent the intermediate billet from damaging the intermediate pipeline 3. A switch valve 1 is provided at the connection between the water supply pipe 2 and the cooling water supply system to facilitate the adjustment of the water volume.

[0021] During the actual installation, Φ24mm stainless steel pipes are installed as cooling water pipes on both sides of the upper part of the guide plate 5, 80mm above the roller surface. A water spray hole 9 with a diameter of 4mm is opened below the stainless steel pipe, and the water spray hole 9 is set corresponding to the roller neck below. The cooling water pipe is 5m long, and each water spray hole 9 can correspond to one roller, so that 6 rollers 7 can be cooled.

[0022] A drain valve 11 can be connected to the water supply pipe 2 to regularly discharge the impurities deposited in the water supply pipe 2 to reduce the occurrence of blockage in the cold water pipe. The intermediate pipeline 3 is set on the top of the insulation cover 6 above the roller table 7 to transport the cooling water to the other side of the roller table 7 and prevent the cooling water temperature from rising too high. Figure 4 , stop valves 12 are installed at certain intervals on the cooling water pipe to control the water volume, and the impurities and sludge in the cooling water pipe can be regularly removed during the rolling stop time to ensure the internal cleanliness of the pipe. If the cooling water pipe is short, the stop valve 12 can be connected to the cooling water pipe at the two ends away from the water supply pipe.

[0023] See Figure 3 A through hole is opened on the guide plate 5 of the roller table 7, and the position of the through hole corresponds to the water spray hole 9 on the cooling water pipe 1 4 and the cooling water pipe 2 10, so that the cooling water can be aligned with the roller neck 8 of the roller table 7 to cool it evenly.

[0024] See Figure 4 , Figure 5 The water spray hole 9 can be set at the lower side of the pipe wall of the cooling water pipe 1 4 and the cooling water pipe 2 10 according to the roller spacing of the roller table 7, and is arranged opposite to the roll neck 8. Once impurities are deposited at the bottom of the cooling water pipe, the impurities will not be rushed to the roll neck 8 with the cooling water, and the cooling of the roll neck 8 will not be affected.

[0025] Compared with the original cooling device, the cooling effect is improved after using the cooling device of the utility model, and the blockage of the spray pipe is significantly improved. The original water holes were blocked at nearly 50 places each time for maintenance, but only 5 places were blocked each time after the modification, which reduces the maintenance time. The number of water spray holes 9 is also significantly reduced, which reduces the solid water consumption and prevents the roller 7 from being worn too much or overheated and swollen, which affects the conveying of the slab. At the same time, the temperature control of the intermediate slab is guaranteed, the surface quality of the steel plate is improved, and the rolling stability is improved.

Claims

1. A cooling device for a rough rolling roller table, characterized in that: It includes a water supply pipe, an intermediate pipeline, a cooling water pipe 1 and a cooling water pipe 2. The water supply pipe is divided into two paths and respectively connected with the intermediate pipeline and the water supply branch pipe; the cooling water pipe 1 is arranged above the roll neck on one side of the roller table, and the cooling water pipe 2 is arranged above the roll neck on the other side of the roller table; the water supply branch pipe is connected with the cooling water pipe 1, and the cooling water pipe 2 is connected with the intermediate pipeline. Water spray holes are opened on the cooling water pipe 1 and the cooling water pipe 2.

2. A cooling device for a rough rolling roller table according to claim 1, characterized in that: The intermediate pipeline is arranged on the top of the heat preservation cover above the roller table.

3. A cooling device for a rough rolling roller table according to claim 1, characterized in that: A switch valve is provided at the connection between the water supply pipe and the cooling water supply system.

4. A cooling device for a rough rolling roller table according to claim 1, characterized in that: The water spray holes are arranged below the pipe wall sides of the first cooling water pipe and the second cooling water pipe, and are arranged opposite to the roll neck.

5. A cooling device for a rough rolling roller table according to claim 1, characterized in that: The water supply pipe is connected with a sewage valve.

6. A cooling device for a rough rolling roller table according to claim 1, characterized in that: The cooling water pipe 1 and the cooling water pipe 2 are both connected with a stop valve.

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