JPS5940429Y2 - Slab cooling machine pit scale removal device - Google Patents

Description

[Detailed description of the invention] In a submerged slab cooler, when the slab is cooled, scale on the slab surface is deposited and accumulated in the water tank.

This idea involves 1) continuously stirring and mixing the scale with water and removing it from the tank using a submersible pump, and 3) continuously discharging the scale in the tank without stopping the slab cooler. This is the purpose.

A conventionally known slab cooler scale removal device is shown in Figs.
As shown in FIG. 8, a method is used in which the scale accumulated on the lower surface of the water tank 1 is blown up to the pump suction lower by a high-pressure water nozzle 10 provided in a rectangular groove 1a. It was provided only in

According to this method, since the groove 1a is rectangular, there is a large resistance to the flow of water and scale blown out from the nozzle 10, and the scale may not collect sufficiently.

Therefore, it is necessary to stop the slab cooler, drain the water from the water tank, and manually remove the scale from the water tank 1.Although the scale near the pump in the water tank 1 can be removed along with the water, , the opposite side of the pump often had a mountain of accumulation.

For this reason, there is a drawback that it requires time and input to remove the scale each time, which increases costs.

The relationship between the amount of spray water, water pressure, or nozzle pitch, and the amount of scale generated have a major influence on how scale can be washed away in water.

In addition to this, the shape and slope of the scale groove 1a, the scale transport distance (the distance over which the scale is sprayed), etc. are also important factors.

These relationships were not appropriate in the conventional method, and because some things were missing, scale removal could not function satisfactorily.

As shown in Figures 1 to 6, this idea is to create a special aquarium in which scale removal pumps are placed on both sides of the aquarium, and the scale groove in the center of the aquarium is U-shaped, with the center part of the groove being higher. , it is possible to continuously and smoothly remove the scale that occurs in the aquarium.

Now, 1 is a rectangular slab cooling water tank.

As is clear from FIGS. 2 and 3, the cooling water tank 1 has an inclined bottom 1b that becomes lower toward the center in the longitudinal direction.

Reference numeral 4 denotes a central groove for flushing scale, which has a U-shaped cross section and slopes downward on both sides.

A scale removal pump 6 is installed at both ends of the central groove 4.

A horizontal bed 16 is provided above the inclined bottom 1b, and partition plates 3a are erected on the horizontal bed 16 to form a cooling bed 3.

2 is a cooling slab placed between cooling beds 3;

5 (FIG. 4) is a drive motor that drives the scale removal pump 6, and 6 is the scale removal pump.

7 is a scale suction port, and 8 is a high-pressure water supply pipe that communicates with a nozzle 10 provided in the central groove 4 of the cooling water tank.

9 is a discharge pipe, and the scale is discharged through this pipe.

The water supply pipe 8 is attached onto the central groove 4 with a U bolt 11 and a fixing bracket 12.

13 is a pump base on which the drive motor 5 is installed.

Reference numeral 14 indicates a scale, and reference numeral 15 indicates a stirring nozzle, two or three of which are provided near both ends of the central groove 4 in order to agitate the scale 14 that has flowed down near the scale suction lower to facilitate suction.

Since the scale removing device of the present invention is constructed as described above, the scale 14 deposited on the lower surface of the tank naturally collects toward the central groove 4 of the tank due to the slope of the inclined surface 1b of the tank.

The scale 14 is divided into two parts in the flow direction by the water tank central groove 4, and is swept away by the high pressure water from the nozzle 10 and flows to the position of the suction lower.

Then, the water and scale 14 are further stirred by the stirring nozzle 15 and discharged out of the water tank by the pump 6.

Should the discharged scale and water be passed to the scale sluice?
Or it is discharged into a tank that separates scale and water.

According to this invention, the scale generated during cooling of the slab material 2 can be collected in the central groove by the sloped bottom provided in the water tank.

The center part of the groove is made medium high, the scale is collected on both sides, and the scale is mixed with water near the water inlet, stirred, and sucked up by a pump, making it possible to completely remove scale.

In particular, if the groove is rectangular in shape, the scale will get caught in the corners, making it difficult to flow, but since the cross section is U-shaped, there will be no such catching and the flow will be smooth. If there is a slope, it will be difficult to flow, but if the scale is sloped, it will flow easily due to the scale's own gravity, which also contributes to complete scale removal.

Furthermore, by arranging the pumps on the left and right sides of the central groove and halving the distance through which the scale flows in the groove, the scale can be completely and quickly transported to the suction port of the pump.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the scale removal device according to the present invention, Fig.
The figure is a view taken along the ■-■ arrow in Figure 1, Figure 3 is a view taken along the ■-■ arrow in Figure 1, Figure 4 is an enlarged view of the ■-arrow section in Figure 2, and Figure 5 is a view taken along the ■-■ arrow in Figure 1.
6 is a detailed view in the direction of the ■ arrow in the figure, FIG. 6 is a detailed view in the direction of the ■ arrow in FIG. 5, FIG. 7 is a sectional view corresponding to FIG. Detailed view. In the figure, 1...Slab cooling water tank, 1a...Groove 1
BTLC inclined bottom, 2... Cooling slab, 3... Cooling bed, 3a... Partition plate, 4... Central groove, 5... Scale removal pump drive motor, 6... Scale removal pump, 7... Bell mouth (scale suction port), 8... High pressure water supply pipe, 9... Discharge pipe, 10... Nozzle, 11...
...U bolt, 112...Bracket for fixing high pressure water supply pipe, 13...Pump base, 14...Scale, 1
5... Stirring nozzle, 16... Horizontal bed.

Claims (1)

[Scope of utility model registration request] The bottom of the rectangular slab cooling water tank is constructed with an inclined bottom 1b facing toward the center in the longitudinal direction, and a central groove 4 with a medium-height U-shaped cross section is provided in the center of the cooling water tank. 1. A device for removing scale in a pit of a slab cooler, characterized by having a nozzle 10 that ejects water into the air, and a pump 6 for removing scale installed at both ends.