JPH04239489A - Float lid - Google Patents

Abstract

PURPOSE:To accurately cover the almost entire surface of a liquid in order to control its vaporization and thereby reduce the heating energy required for heating the liquid to a high temperature. CONSTITUTION:When a large number of float lids 10 are admitted into a tank, since the flat plate part 11 floating on the surface of a liquid is of regular hexagon, the float lids become close together with their side faces 11A in contact with one another and, since the leg part 12 extending downwardly from the lower part of the flat plate part 11 is of an inverted hexagonal pyramid shape having its bottom surface in coincidence with the plane surface of the flat plate part 11, it is impossible for the float lids to run on one another or lay, one upon another. Even if the float lids are turned sideways on the flat surface part of a reinforcing bar, since the center of gravity of the float lid 10 tends to be positioned outside the width direction of the flat surface part thereof, the float lid 10 drops therefrom onto the liquid.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a float lid that covers the surface of a liquid, and can be used, for example, in a tank for surface treatment of reinforcing materials embedded in an ALC panel.

0002

BACKGROUND ART FIG. 5 shows a conventional float lid 20. As shown in FIG. The float lid 20 is formed into a regular hexagonal plate shape in plan view, and is poured into a large number of liquids 22 stored in a tank 21, as shown in FIG. The liquid 22 is 70 to 80
It is heated to around ℃. The float lid 20 holds the liquid 22
They float on the surface of the liquid, and their six sides contact each other in a dense state, covering almost the entire surface of the liquid. The tank 21 is, for example, a pickling tank in which the reinforcement material 23 shown in FIG. 7 is immersed and its surface treated. The reinforcement material 23 includes main reinforcements 24 and mesh reinforcements 25, and is buried in the ALC panel 26 after surface treatment is completed. Such reinforcement material 2
3 is suspended by a crane (not shown) and immersed in a liquid 22 stored in a tank 21 shown in FIG. At this time, the densely packed float lid 20 is pushed aside by the lower end of the descending reinforcing material 23 and spread out, so that the reinforcing material 23 can be immersed therein. After the reinforcing material 23 is immersed, the float lid 20 recovers its dense state, and substantially the entire surface of the liquid 22 is covered again.

[0003] As described above, the purpose of the float lid 20 is to allow the reinforcing material 23 to be immersed in the liquid 22, and to cover almost the entire liquid surface to suppress the vaporization of the high-temperature liquid 22. , the heating energy of the liquid 22 can be reduced.

0004

[Problems to be Solved by the Invention] However, according to the conventional example described above, when the reinforcing member 23 is immersed in liquid,
As shown in FIG. 8, the edge of the float lid 20 that has been pushed away may rest on another float lid 20 (on the right side of the figure).
Alternatively, there was a problem that they overlapped one another (left side in the figure). When such a situation occurred, the float lid 20 could not cover substantially the entire surface of the liquid, and its purpose could not be achieved.

Furthermore, as shown in FIG. 9, when the reinforcing material 23 is lifted out of the liquid by a crane, the float lid 20 rests on the flat part 24A of the main reinforcing material 24, and it remains in the tank together with the reinforcing material 23. There was a problem with it being discharged outside. This problem becomes more noticeable as the width dimension W of the main reinforcing bars 24 increases.
If this happens continuously, the number of float lids 20 that cover almost the entire liquid level becomes insufficient, and as described above,
A flow method that reduces the heating energy of the liquid 22.
The purpose of the lid 20 could not be achieved.

An object of the present invention is to provide a float lid that can reliably cover substantially the entire liquid surface.

[0007]

[Means for Solving the Problems] The float lid according to the present invention is characterized by having an upper flat plate portion exposed from the surface of the liquid, and leg portions tapering downward from the flat plate portion. configured.

[0008]

[Operation] The float lid constructed as described above floats by immersing its legs in the liquid in the tank, becoming densely packed and covering almost the entire surface of the liquid. This float lid has tapered legs that extend downward from the lower surface of the flat plate, so it cannot be placed on other float lids, and furthermore, it is impossible to overlap vertically, and the reinforcing material is submerged in the liquid. Even if it is lifted up by a crane and placed on the main reinforcement of the reinforcing material, the legs are tapered and unstable, so it will fall and return to the liquid level, and will not be discharged outside the tank. .

[0009] The float lid according to the present invention has A
It is also applicable to tanks other than those for surface treatment of reinforcing materials embedded in LC panels.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Similar to the conventional example, the float lid according to this embodiment is used in the tank 21 shown in FIG. 6 for surface-treating the reinforcing material 23 buried in the ALC panel 26 shown in FIG. .

FIG. 1 shows a float lid 10 according to this embodiment.
It is shown. The float lid 10 is made of a material having a specific gravity lower than that of the liquid 22 stored in the tank 21, such as synthetic resin, and as shown in FIG. It is composed of legs 12 that stand upright below the liquid surface.

The flat plate portion 11 is formed into a regular hexagonal plate shape in plan view, and has six side surfaces 11A having the same shape and size. These side surfaces 11A are in contact with one side surface of the flat plate part of the other float lids 10, so that a large number of float lids 10
can be packed together without any gaps.

The leg portion 12 is formed in the shape of an inverted hexagonal pyramid, the bottom shape of the hexagonal pyramid matches the planar shape of the flat plate portion 11, and has six inclined surfaces 12A.

The center of gravity A of the float lid 10 is located relatively above the leg portion 12, as shown in FIG. The dimension H from the center of gravity A to the tip of the leg portion 12 is set to an appropriate dimension that is at least 1.2 to 1.3 times the width dimension W of the main reinforcement 24 constituting the reinforcement member 23.

In a tank in which a large number of such float lids 10 are floating, reinforcement members 2 are supported by a crane (not shown).
3 is lowered. The float lid 10 is pushed away by the lower end of the reinforcing material 23 and spreads, thereby causing the reinforcing material 23 to spread out.
is immersed in the liquid 22. After the reinforcing material 23 is immersed, substantially the entire surface of the liquid 22 is covered again by each float lid 10. At this time, because the float lid 10 has legs 12 that stand upright below the liquid surface, the float lid 10 does not rest on other float lids or overlap each other vertically. Further, some of the float lids 10 are pushed down into the liquid 22 at the lower ends of the reinforcing members 23, but are floating above the liquid surface again.

After a predetermined period of time has elapsed, the reinforcing member 23 is lifted out of the liquid 22 by a crane. The float lids 10 that are densely packed on the surface of the liquid 22 are pushed away by the upper end of the reinforcing material 23 that is being pulled up and spread out. On this occasion,
As shown in FIG. 3, some of the float lids 10 are pushed up above the liquid level, but the float lids 10 that have come into contact with the reinforcing material 23 are
The inclined surface 12A of the leg portion 12 slides down the ridgeline of the main reinforcement 24 of the reinforcement member 23 and returns to the liquid 22 (left side in the figure). moreover,
The float lid 10 placed on the main reinforcement 24 loses its balance due to the unstable legs 12 and the relatively high center of gravity A and falls into the liquid 22 (to the right in the figure). The fallen float lid 10 immerses the leg portion 12 where the center of gravity A is located in the liquid and floats again.

Furthermore, as shown in FIG. 4, in rare cases when the float lid 10 is overturned and rests on the main reinforcement 24, if its center of gravity A is outside the width dimension of the main reinforcement 24, the balance must be adjusted as described above. It is lost and returns to liquid 22. Since this center of gravity A is set to be 1.2 to 1.3 times the width of the main reinforcement 24 from the tip of the leg portion 12, it will be located outside the width of the main reinforcement 24 in most cases.

According to the float lid 10 according to the present embodiment as described above, the float lid 10 can be mounted on another float lid or
A good dense state is obtained without vertically polymerizing, and
Even when the reinforcing material 23 is pulled up, substantially the entire surface of the liquid 22 can be reliably covered without being discharged to the outside of the tank, and therefore the heating energy of the high-temperature liquid 22 can be reduced.

By the way, the embodiment described above is just an example, and the shape of the float lid according to the present invention may be any other shape as long as the object of the present invention can be achieved.

For example, in the above embodiment, the planar shape of the flat plate portion 11 is a regular hexagon, but other shapes such as a regular polygon such as an equilateral triangle or a square, or a rectangle, a circle, an ellipse, etc. are also possible. Well, its shape is arbitrary. but,
If a regular hexagonal shape is used as in this embodiment, the float lid can be tightly packed with other float lids without any gaps, and can be relatively easily packed.

[0021] The leg portion 12 may also have a conical shape, a wedge shape, an arrowhead shape, etc., for example. However, as in this example,
If it is formed into a hexagonal pyramid shape whose bottom shape matches that of the flat plate part 11, the slope 12A of the leg part 12 will be connected from the side surface 11A of the flat plate part 11.
Since it is continuous, it is reliably prevented from being placed on other float lids.

Furthermore, the flat plate portion 11 and the leg portions 12 do not necessarily need to be formed integrally, but may be made by dividing them as appropriate.
Each may be assembled by an appropriate method such as screwing together, or each may be made of different materials. Moreover, the position of the center of gravity A may be in a range exceeding the above-mentioned 1.2W to 1.3W.

The float lid 10 may be made of any material as long as it has a specific gravity lower than that of the liquid. At this time, it is preferable that the material of the float lid 10 is made of a material that has resistance to the liquid, such as corrosion resistance and heat resistance, as required.

The float lid 10 according to the present invention is used in the tank 2 for surface treatment of the reinforcing material 23 of the ALC panel 26.
It is also applicable to tanks other than 1.

[0025]

According to the float lid according to the present invention as described above, it is possible to reliably cover substantially the entire surface of the liquid stored in the tank.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing a float lid according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which the float lid is suspended in liquid.

FIG. 3 is a side view showing the action when the float lid is placed on the main reinforcement of the lifted reinforcement material.

FIG. 4 is a side view showing the effect when the float lid is rolled over and rests on the flat surface of the main reinforcement of the reinforcing member.

FIG. 5 is an overall perspective view showing a conventional float lid.

FIG. 6 is a plan view showing a state in which a conventional float lid is densely packed over substantially the entire surface of liquid stored in a tank.

FIG. 7 is an overall perspective view showing reinforcement materials embedded in the ALC panel.

FIG. 8 is a side view showing a state in which a conventional float lid is placed on top of another float lid or overlapped one above the other.

FIG. 9 is a perspective view showing a state in which a conventional float lid rests on a flat surface of a main reinforcement of a reinforcing member.

[Explanation of symbols]

10 Float lid 11 Flat plate part 12 Legs 21 Tank 22 Liquid

Claims (1)

[Claims] Claims: 1. A float lid in which a large number of floats are poured into a liquid stored in a tank and float to cover substantially the entire surface of the liquid, an upper flat plate portion exposed from the surface of the liquid; A float lid characterized in that it has a leg portion that tapers downward from the flat plate portion.