JPS6138904Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a steel plate cooling device.

In a conventional steel plate cooling system, for example, as shown in Fig. 1, a red-hot steel plate a is placed on a roll b supported by a bearing c, and when the moving steel plate is water-cooled, high-pressure water sent from a pump h is used. is injected from the nozzle d from the main water supply pipe g through the water supply pipe e. Depending on the material, the steel plate a may be air-cooled. At this time, it passes through this device.

At this time, close the water supply cutoff valve to stop the water supply to the nozzle d, open the water drain valve i of the water drain device, drain the water from the nozzle d through the water drain pipe j, and wait until the water drains (stop the water supply). However, in the final stages of water draining, the force that allows the residual water in the pipe to fall weakens, prolonging the water draining time. In addition, if the water supply cutoff valve f is used for a long time, the valve seat etc. may wear out and foreign objects may become trapped.
Gradually, watertightness becomes insufficient and a small amount of leakage occurs. The remaining water in these nozzles d drips from the nozzles d by the piping drive and falls on the red-hot steel plate a, creating a pattern called a flower pattern and spoiling the appearance. Therefore, the operator of the apparatus waits for the water to drain completely before starting the next operation, which significantly reduces the production efficiency of the apparatus and causes great fatigue for the operator.

An object of the present invention is to provide a steel plate cooling device that can significantly shorten the water drain time, absorb leaks from a water supply cutoff valve, and is easy to operate and manage.

For this reason, the configuration of the present invention is such that, in a cooling device having a nozzle provided above a moving steel plate and a water draining device for removing water from this nozzle, a water supply cutoff valve provided in a water supply pipe to the nozzle is provided. It is characterized by being equipped with a compressed air blowing device installed at a portion not higher than the highest water level of residual water in the closed state.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 2 to 5.

In Fig. 2, 1 is a steel plate, 2 is a roll, 3 is a bearing, 4 is a nozzle, 5 is a water supply pipe, 6 is a water supply cutoff valve, 7 is a main water supply pipe, 8 is a pump, 9 is a drain valve,
10 is a drain pipe, and up to this point it is the same as in FIG. 1. Reference numeral 11 denotes an air pipe of the compressed air blowing device, which is connected to the upper part of the vertical portion 13 of the water supply pipe 5, and has an air cutoff valve 12 in the middle.
That is, the connection position of the air pipe 11 to the vertical portion 13 is set at a position not higher than the highest water level of the residual water when the water supply cutoff valve 6 is closed.

In the steel plate cooling system configured as shown in FIG. 2, when the water supply cutoff valve 6 is open, the drain valve 9 and the air cutoff valve 12 are closed, and when the water supply cutoff valve 6 is closed, first, Open the water drain valve 9, then open the air cutoff valve 12, and open the diagonal section 14 of the water supply pipe 5.
Remove residual water inside the nozzle and nozzle 4. Furthermore, if the residual water level in the vertical section 13 of the water supply pipe 5 gradually rises due to water leakage from the water supply cutoff valve 6,
Each time the red-hot steel plate does not pass, the air cutoff valve 12 is opened to remove residual water.

Figures 3 to 5 show the air cutoff valve 12 shown in Figure 2.
This shows the timing of opening and closing. That is, FIG. 3 shows a case where the water level of the residual water in the vertical portion 13 of the water supply pipe 5 has risen, and in this state, the air cutoff valve 12 is opened. Figure 4 shows air being blown in.
FIG. 5 shows a state in which residual water removal is completed and the air cutoff valve 12 is closed.

As mentioned above, the present invention is equipped with a compressed air blowing device at a portion that is not higher than the highest water level of residual water when the water supply cutoff valve is closed, so its blowing action significantly shortens the water drain time. In addition, it is also possible to absorb leaks from the water supply cutoff valve. Further, the driver's operation management becomes easier, and the operation density of the cooling device increases. Therefore, according to the present invention, it is possible to operate the device with frequent water supply interruptions.

[Brief explanation of drawings]

Fig. 1 is a partially sectional elevational view showing an example of a conventional steel plate cooling device, Fig. 2 is a partially sectional elevational view showing an embodiment of the present invention, and Fig. 3 is a vertical section of a water supply pipe. Figure 4 is a cross-sectional elevation view showing the case where the water level of residual water has risen;
FIG. 5 is a cross-sectional elevational view showing a state in which residual water removal has been completed. 1... Steel plate, 4... Nozzle, 5... Water supply piping,
6...Water supply cutoff valve, 9...Water drain valve, 10...Water drain pipe, 11...Air piping, 12...Air cutoff valve, 13...Vertical part of water supply piping, 14...Diagonal part of water supply piping Gyobe.

Claims (1)

[Scope of utility model registration request] A nozzle installed above the moving steel plate,
and a water draining device for removing water from this nozzle, provided at a portion that is not higher than the highest water level of residual water when the water supply cutoff valve provided in the water supply piping to the nozzle is closed. A steel plate cooling system characterized by being equipped with a compressed air blowing device.