JPH0321829B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention consists of two endless steel belts, an upper and a lower part, whose central portions on the outbound side are curved into an arched shape, and the object to be cooled is sandwiched between the two belts in the form of a sandwiched sandwich. In a double-belt type cooling machine that continuously cools and solidifies cooling water by injecting cooling water from the back side of the outgoing belt while the belt is in the same state, both the upper and lower belt widths are the same, and the cooling water does not adhere to the belt surface side. The present invention relates to an upper belt cooling device in which water is collected at a collection weir.

[Conventional technology]

In conventional double belt type coolers, so-called double coolers, the width of the upper steel belt is approximately 100 mm wider than the lower steel belt, as shown in Figure 1.
In addition, edge ropes for draining water are attached to both ends of the belt, and the cooling water sprayed on the back side of the outbound side of the upper steel belt exchanges heat with the steel belt, overflows the GV ropes at both ends of the belt, and flows along the edge ropes to the lower part. The water is drained into the outer tank.

[Problem that the invention seeks to solve]

For this reason, some of the cooling water may flow to the belt surface side and a small amount of water droplets may be mixed into the material. This occurs because water droplets adhering to the edge rope jump onto the material surface, that is, the surface of the steel belt, when the edge rope is bent together with the steel belt at the end pulley. Furthermore, since the area between which the object to be cooled is sandwiched in a sandwich-like structure is in an atmosphere of water droplets, a small amount of mist water droplets may adhere thereto.

[Means to solve the problem]

In a double belt type cooling machine, which is installed almost horizontally in the upper and lower belts, the material is sandwiched and conveyed on the forward side of both the upper and lower belts, and the desired cooling is performed. A sprinkle trough is installed at a high position on the back side of the outgoing side of the upper belt, which is curved in an arch shape so as to bulge upward, and has the same width as the lower belt, and a sprinkle trough is placed at a low position to collect the cooling water flowing down along the back side of the belt. In addition to installing a water collection weir to remove the water, a siphon pipe with a suction pump is installed below the water collection weir to drain the cooling water that could not be collected by the water collection weir. Do it like this.

Also, two steel belts with one end high,
In a double belt type cooling machine, the upper and lower belts are installed opposite each other with the other end lowered, and the material is conveyed while being held between the forward side surfaces of both the upper and lower belts to perform the desired cooling. The central part of the outgoing side is slightly bulged upward to form an arched shape, and sprinkle troughs are arranged at high and intermediate positions on the back side of the outgoing side of the upper belt, which has the same width as the lower belt, and at these intermediate positions. Water collection weirs are installed in two stages, one above and one below the sprinkler trough, to collect the cooling water flowing down along the back of the belt. A siphon pipe with a suction pump is provided to drain the cooling water that could not be removed at the lower side of the upper belt, and the water is drained through this siphon pipe.

〔Example〕

The present invention will be explained below based on an illustrated embodiment.

In the figure, 1 is a steel belt made of stainless steel or the like having the required width and length, and the upper belt 1a and the lower belt 1b have the same width but different overall lengths, and each steel belt is Rollers 2 and 3 are opposed to each other at both ends (endless shape), and the steel belt 1a or 1b is stretched between the rollers. In this case, both belts 1a and 1b may be horizontal and parallel as shown in FIG. be. The outgoing side of each of the upper and lower belts 1a, 1b facing each other is driven in the same direction and at the same speed, and the central part of the outgoing side is curved so as to swell slightly upward, and the upper belt is injected onto the back surface of the outgoing side. This makes it easier to recover cooling water.

Sprinkle troughs 4 for spraying cooling water evenly in the cross-sectional direction of the belt are provided at one or more required intervals on the back surface of the upper belt 1a on the outbound side. If the steel belt is stretched horizontally as shown in Figure 2A, it will be placed at a position slightly raised from the other part of the center on the outgoing side of the belt, and if it is slanted as shown in Figure 2B, it will be placed on the outgoing side. Sprinkle troughs 4 are provided at the top and middle portions, and the number of sprinkle troughs to be installed is determined in consideration of the overall length of the steel belt, the degree of cooling, the belt speed, the properties of the object to be cooled, etc.

The sprinkles are then sprayed onto the back surface of the steel belt from the sprinkle trough 4, flow down the back surface of the belt in a lower direction while exchanging heat on the belt surface, and are placed at a predetermined position and in contact with or close to the back surface of the belt. The water is collected at the water collection weir 5 and then discharged. This water collection weir 5
Similar to the sprinkle trough, it has approximately the same length in the cross-sectional direction of the belt, that is, in the belt width direction, and is inserted between the GV ropes provided at both ends of the steel belt, and drains naturally from the weir with a difference in head. It is.

A part of the cooling water that is collected and not collected and discharged by this water collection weir 5 flows further downward along the belt surface, and finally accumulates in the lowest part of the steel belt, that is, in the drum. It becomes like this. This water level
If the height is higher than the GV rope height, it will overflow and water droplets will adhere to the upper belt surface side or the lower belt surface side, which is not good. Therefore, a siphon pipe 6 is provided at the inner bottom of this drum for draining the cooling water accumulated in the siphon system. A suction pump 7 is disposed in a part of the siphon pipe 6 in parallel with the part of the siphon pipe, and driving water is supplied through the solenoid valve 8 of the suction pump 7 to create a negative vacuum inside the siphon pipe. A pressure is generated, thereby causing the cooling water accumulated in the drum to be discharged to the outside through a pipe 6 by a siphon phenomenon. When this accumulated cooling water is discharged through the siphon pipe, even if the driving water is stopped, if the cooling water is accumulated in the drum due to the siphon phenomenon, it will be continuously discharged. This is done by opening and closing a solenoid valve using a liquid level switch 9 installed inside the tank.

As shown in detail in FIG. 7, the water collection weir 5 is of a dust pan type, and the opening edge at the tip is close to or in contact with the steel belt surface, and collects the cooling water flowing down on the belt surface, and exits from the discharge port. It will be discharged to Cooling water is also sprayed from below from a nozzle onto the back surface of the lower belt 1b on its outbound side to cool the lower belt, but after colliding with the back surface of the belt, this cooling water naturally falls and is placed below the nozzle. The upper belt cooling water can also be drained into this tank. This can be easily done by leading one end of the drain pipe and siphon pipe from the water collection weir into the tank.

〔Effect of the invention〕

According to the present invention, the width of the upper and lower belts facing each other is approximately the same, and the center portion of the belt on the outgoing side is curved in an arched shape so as to bulge upward, so that the effective width is wider than that of the conventional belt. In addition to improving the cooling capacity, cooling of the upper belt is supplied almost uniformly to the entire width of the back surface of the belt from the sprinkle trough, and the cooling water flowing down is collected and discharged by a dust collection weir while exchanging heat on the belt surface. In addition, the cooling water that cannot be removed is stored in the lower part of the belt and drained through a siphon pipe equipped with a suction pump, making the structure of the spray tank simple and easy to maintain. Easy to inspect,
Moreover, since the cooling water does not overflow from the GV rope of the upper belt, there is no chance of water droplets getting into the material, which has the advantage of improving safety and quality.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a known double cooler, Fig. 2 is a schematic front view of the present invention, Fig. 3 is a front view, Fig. 4 is a plan view, Fig. 5 is an explanatory diagram of a siphon type drainage,
FIG. 6 is a side view of the water collection weir, and FIG. 7 is an explanatory diagram of the water collection weir. 1a... Upper belt, 1b... Lower belt,
2, 3...Roller, 4...Sprinkle trough,
5... Water collection weir, 6... Siphon pipe, 7... Suction pump.

Claims (1)

[Scope of Claims] 1. In a double belt type cooling machine, which is arranged almost horizontally in the upper and lower belts, the upper and lower belts clamp and convey the material on the outgoing side surfaces of both the upper and lower belts, and perform the desired cooling. The central part of the outgoing side of the belt is curved in an arched shape so as to bulge upward, and a sprinkle trough is arranged at a high position on the back side of the outgoing side of the upper belt, which is the same width as the lower belt.
A water collection weir is installed at a low position to collect the cooling water flowing down along the back side of the belt, and a water collection weir is installed at a position lower than this water collection weir to drain the cooling water that could not be collected by the water collection weir. An upper belt cooling device with a double belt type cooling plate, characterized in that a siphon pipe with a suction pump is provided, and water is discharged through the siphon pipe. 2. Two steel belts are installed vertically opposite each other so that one end is high and the other end is low, and the material is conveyed by sandwiching it on the forward side of both the upper and lower belts.
In a double belt type cooler that provides the desired cooling,
The center portions of both belts on the outgoing side are slightly bulged upward to form an arched shape, and sprinkle troughs are arranged at high and intermediate positions on the back side of the outgoing side of the upper belt, which has the same width as the lower belt, and Water collection weirs are installed in two stages, one above and one below, to collect the cooling water flowing down along the back side of the belt, at a position slightly above and below the sprinkle trough at the intermediate position. A siphon pipe with a suction pump is installed to drain the cooling water that could not be extracted by the water weir at the lower part of the upper belt.
An upper belt cooling device with a double belt type cooling plate, characterized in that water is drained through this siphon pipe.