JP5597170B2 - Liquid level coating float - Google Patents

Description

  The present invention relates to a liquid surface coating float that can coat a liquid surface without gaps.

  As a conventional liquid surface coating float, a spherical float formed in a hollow shape is known. Even when a large number of spherical floats are thrown into the liquid, they are floated and arranged on the liquid surface without overlapping, so that the floats can be arranged efficiently. However, since the spherical diameter parts are aligned on the liquid surface, the liquid surface is arranged in a circle, and the liquid surface cannot be completely blocked, and a small sphere is mixed in the gap formed between the circles. It still needs to be done, but it still cannot completely block the surface.

  Further, as a float, a plate-like structure having a certain thickness in which a planar shape is a regular hexagonal shape and a low conical surface or a convex curved surface is formed on the upper and lower surfaces is also known (see, for example, Patent Document 1). . In this way, if the planar shape is a regular hexagonal shape, it can be arranged without generating a gap when arranged in a liquid surface. However, in order to float in a liquid such as a small container for indoor use or laboratory use without generating a gap, the diagonal dimension needs to be as small as about 10 mm. When such small floats are put together into the liquid, even if conical surfaces or convex curved surfaces are formed on the upper and lower surfaces, the floats stick together and overlap, and as a result, the liquid surface cannot be completely blocked.

  On the other hand, as shown in FIG. 8, for example, the plane shape is a regular hexagonal float, the upper surface of the conical surface 51 is raised, for example, a conical surface or a convex curved surface with an elevation angle α of 45 ° or more, There has been considered a structure in which the upper surface is always directed upward by means of increasing the thickness (for example, see Patent Document 2).

JP 2000-355395 A JP 2002-114292 A

  In the plate-like float having a regular hexagonal shape as described above, as described above, when the size is particularly small, they overlap each other and stick together, and the liquid level cannot be completely blocked. In addition, as shown in FIG. 8 described above, a float having a structure in which a high conical surface or a convex curved surface is formed on the upper surface side has a large slope. The problem of overlapping will be eliminated. However, if a large number of the floats are gathered together when they are thrown into the liquid, even if the bottom surface of the float is heavy, the float thrown downward or sideways will be turned over in the normal direction. Becomes difficult. That is, when the float is about to rotate in order to face the upper surface, the rotation may be hindered by other surrounding floats and may not necessarily rotate. Therefore, when the float floats on the liquid surface in a sideways state, the regular hexagonal shape of the float does not appear on the liquid surface, so that the float cannot be in close contact with the surrounding float. As a result, there is a problem that the liquid level cannot be completely covered.

  The present invention has been made to solve such a problem, and prevents the supplied floats from overlapping each other, and in close contact with other floats in a state of floating on the liquid level, the liquid level is separated. It is an object of the present invention to provide a liquid surface coating float having a structure that can be coated without any problems.

  The float for liquid level coating according to the present invention is a float for liquid level coating for floating on the liquid level to cover the liquid level, and the float for liquid level coating is composed of two truncated cone-shaped members, Each of the two truncated cone-shaped members has a cross-sectional shape perpendicular to the joint surface passing through the center of a circle that is joined to the bottom surfaces thereof and to which the truncated cone-shaped member is joined. Each of the two truncated cone-shaped members has a weight so that a cross section perpendicular to the joint surface coincides with the liquid surface when the liquid surface coating float is floated on the liquid surface. A portion is provided.

  Moreover, it is preferable that the said weight part is integrally shape | molded inside the said truncated cone-shaped member.

  Moreover, it is preferable that the weight part is formed by attaching a weight to the inside of the truncated cone-shaped member.

  Moreover, it is preferable that when the liquid surface coating float is floated on the liquid surface, a band-shaped flat portion having a width is formed on the side surface of the truncated cone-shaped member coinciding with the liquid surface.

  According to the present invention, the liquid surface coating float is composed of two truncated cone-shaped members having a cavity therein, and the two truncated cone-shaped members are joined to each other at the bottom surface side, and the truncated cone-shaped The cross-sectional shape perpendicular to the joining surface passing through the center of the circle that is the joining surface to which the members are joined is a substantially regular hexagon, and each of the two frustoconical members has the liquid level coating When the float is floated on the liquid surface, the weight section is provided so that the cross section perpendicular to the joint surface coincides with the liquid surface. Since it becomes a regular hexagonal shape when viewed from above, the liquid surface can be covered without a gap.

  In addition, the float for coating the liquid level that floats on the liquid level has the side surface of the truncated cone positioned on the liquid level, and even if another float is piled up from the top, the side surface of the truncated cone is curved. Because there is no flat part, there is no stacking. In addition, since the liquid surface coating float is provided with the weight portion, the liquid surface is finally held at a stable position on the liquid surface, but two or more liquids are held even before being held at the stable position. Since the surface coating float can be rotated on the spot in a state where the side surfaces of the truncated cone are in line contact with each other, the surface coating float is rotated to a stable position while the liquid surface is coated. Therefore, the liquid level can be quickly coated. Further, since the float can be rotated on the spot, when another float is introduced from above, the float that has been smoothly introduced can be guided to the liquid level.

It is a perspective view which shows one Embodiment of the float for liquid level coating | coated of this invention. It is sectional drawing of the float for liquid level coating | coated of this invention. It is the figure which looked at the truncated cone-shaped member of the float for liquid level coating | coated of this invention from the upper surface side. (A)-(c) is a figure for demonstrating the weight part used for the float for liquid level coating | coated of this invention. It is the figure which looked at the float for liquid level coating | coated of this invention which floated on the liquid level from the side. It is the figure which looked at the float for liquid level coating | coated of this invention which floated on the liquid level from the top. It is a perspective view which shows other embodiment of the float for liquid level coating | coated of this invention. It is explanatory drawing which shows the structural example of the conventional float for surface coating.

  Hereinafter, the liquid level coating float of the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIGS. 1 to 3, a liquid surface coating float (hereinafter simply referred to as a float) 1 of the present invention is composed of two truncated cone-shaped members 21, 22. Each has a cavity S (see FIGS. 4A to 4C). As shown in FIG. 1, the two truncated cone-shaped members 21 and 22 are joined surfaces (virtual surfaces) in which the bottom sides of the respective truncated cones are joined and the truncated cone-shaped members 21 and 22 are joined. The cross-sectional shape perpendicular to the joint surface P passing through the center O of the circle which is a plane indicated by P in FIG. 1 is substantially a regular hexagon as shown in FIG. In addition, in FIG. 2, illustration is abbreviate | omitted about the weight part 3 mentioned later.

  The frustoconical members 21 and 22 are formed to have substantially the same shape and the same size, respectively. Further, as shown in FIG. 2, the angle between the bottom surface and the side surface of the truncated cone is such that the frustoconical members 21 and 22 are substantially regular hexagons when viewed from above the fluid surface when floating on the liquid surface. It is shaped so that θ is 60 °. Further, the length D1 of the side surface in the cross-sectional view of FIG. 2 is formed to be equal to the length of the diameter D2 of the upper surface US (see FIGS. 1 and 3) of the circular truncated cone (D1 = D2). That is, the truncated cone-shaped members 21 and 22 have a shape obtained by cutting a cone whose angle between the bottom surface and the side surface is 60 ° so that the height is halved.

  Each of the truncated cone-shaped members 21 and 22 has a side length D1, a diameter D2 of the upper surface US of the truncated cone, and the truncated cone-shaped members 21 and 22 depending on the desired size of the float 1 according to the purpose of use. The thickness is determined. That is, the float 1 can be enlarged when the tank for storing the liquid is large, but when the liquid is put into a room or a laboratory container, the container itself becomes small. On the other hand, the area of the portion that cannot be covered with the liquid becomes relatively large, and the purpose of covering the surface of the liquid cannot be achieved. Therefore, in order to cover the surface of the liquid contained in such a small container, the diagonal dimension (the length of the line connecting the opposite vertices of the regular hexagon) is about 10 to 50 mm, that is, regular six in the cross section shown in FIG. The lengths D1 and D2 of one side of the square are set to about 5 to 25 mm. However, even when the liquid in a large container is covered, this small float 1 can be used as it is, or a larger float 1 can be used for a large container. That is, even a large diagonal dimension of about 150 to 200 mm can be formed in the same manner.

  As shown in FIGS. 4A to 4C, the float 1 composed of the truncated cone-shaped members 21 and 22 is perpendicular to the joint surface P when the float 1 is floated on the liquid surface. The weight portion 3 is provided so that the cross section coincides with the liquid surface into which the float 1 is introduced. In FIGS. 4A to 4C, the weight portion 3 is provided in the cavity S provided in the truncated cone-shaped members 21 and 22. It may be provided outside. 4 (a) and 4 (b), the weight portion 3 is integrally formed in the cavity S inside the frustoconical members 21 and 22. FIG. As shown in FIG. 4A, about half of the inside of the frustoconical members 21 and 22 may be the weight portion 3 filled with resin, or at a predetermined interval as shown in FIG. A plurality of wall-shaped weight portions 3 may be formed by opening. Further, as shown in FIG. 4 (c), a weight is partially attached to the cavity S inside the frustoconical members 21 and 22 on the joining surface P side of the frustoconical members 21 and 22 3. In this case, since the center of gravity of the float 1 is close to the position where the weight portion 3 is provided, the float 1 can be held in a stable posture on the liquid surface. In addition, the structure of the weight part 3 is not particularly limited to the structure shown in FIGS. 4A to 4C, and a light material can be used so as not to have the cavity S inside. In this case, for example, a member made of a heavy material that becomes the weight portion 3 may be embedded in a part.

  The materials of the truncated cone-shaped members 21 and 22 are not particularly limited as long as they can float when put into a liquid, but from the viewpoint of cost and ease of molding, for example, polyethylene, polypropylene, etc. Materials such as synthetic resins, elastic members such as rubber or elastomer, and metal materials such as aluminum can be used. In this case, if the density of the material is high, a foaming agent can be prepared by mixing a foaming agent with synthetic resin, etc., or beads made of foamed resin can be put into a mold as a material and heat compressed. It is possible to mold and add a weight to the inside of the foamed molded body to form a weight part, to mix a foaming agent together with a vulcanizing agent into a paste-like rubber, or to make the interior hollow. By using such a foamed material or making the inside hollow, the molding material is a material having a density higher than that of the liquid, for example, a material having a density higher than that of water such as PFA (specific gravity: about 2). Can also be used.

  When the float 1 is placed in various liquids such as water, oil, alcohol, etc., as shown in FIG. 5, the float 1 is such that the joint surface P in FIG. 1 is perpendicular to the liquid surface. It is designed by its weight and buoyancy so that the upper half floats on the liquid surface. That is, the entire weight of the float 1 including the weight portion 3 and the weight of the liquid that is half the total volume of the float 1 (the weight varies depending on water, oil, alcohol, etc.) are almost equal. The material of the weight part 3, the material of the frustoconical members 21 and 22, the thickness and the like can be appropriately changed according to the type of liquid to be introduced.

  The frustoconical members 21 and 22 can be molded by a known molding method such as injection molding using a mold, for example, and the frustoconical members 21 and 22 are also known by ultrasonic welding or the like. Although it can join by the method, the shaping | molding method and the joining method in particular are not limited.

  Since the float of the present invention is configured as described above, it floats with respect to the liquid level as shown in FIG. 5, and has a regular hexagonal shape when viewed from above the liquid level as shown in FIG. Therefore, the plurality of floats 1 can contact each other at the sides of the regular hexagon, and can cover the liquid surface without any gap.

  In addition, the float 1 has a shape in which the bottom surfaces of the two truncated cone-shaped members 21 and 22 are joined to each other, and the portion of the float 1 exposed from the liquid surface is curved as shown in FIG. For example, even if a large number are randomly thrown into the liquid, they float on the liquid surface without overlapping. On the other hand, as described above, each float 1 floating on the liquid surface has a regular hexagonal shape when viewed from above. Therefore, the side surface of each side of the adjacent float 1 is attracted and attracted by the surface tension, and the liquid level can be covered.

  Further, since the float 1 is provided with the weight portion 3, for example, even when the float 1 is poured into the liquid surface with the upper surface US of the truncated cone of the float 1 facing upward, The float 1 is rotated by the portion 3 to change its posture and is stabilized in the state of FIG. Further, since the float 1 is provided with the weight portion 3, it is finally held at a stable position on the liquid surface as described above, but before being held at the stable position (for example, the weight portion 3 is 2 or more floats 1 can rotate on the spot with the side surfaces of the frustum in line contact with each other, so that the liquid surface is stable in a coated state. Rotate to position. Therefore, the liquid level can be quickly coated.

  In addition, as shown in FIG. 6, even if the orientation of the float 1 varies, not only the side surfaces of the truncated cone are in contact with each other, but also when the upper surface US of the truncated cone contacts the side surface of the truncated cone. Since the liquid surfaces can be coated by attracting each other with the surface tension, it is not necessary to adjust the orientation of the floats 1 after the floats 1 are put on the liquid surfaces, and the floats 1 do not overlap with each other. The operation from when 1 is charged to when the liquid surface is covered becomes easy.

  Further, since the float 1 has a shape in which two truncated cones are arranged, the float 1 can rotate around the axis X (see FIG. 1). When another float 1 was thrown in, or when another float 1 was thrown between two floats 1, the float 1 that floated on the liquid surface rotated on the liquid surface and was thrown smoothly. The float 1 can be guided to the liquid level. Therefore, the float 1 is unlikely to overlap.

  FIG. 7 shows another embodiment of the float 1. The float 1 shown in FIG. 7 is a side surface of the frustoconical members 21 and 22 that coincide with the liquid surface when the float 1 is floated on the liquid surface. In addition, a strip-shaped flat portion P2 having a width is formed. By configuring in this way, in addition to the above-described effects, the contact between the floats 1 on the liquid surface is always a surface contact, so that the floats 1 can be adsorbed more reliably and reliably. The liquid level can be coated.

DESCRIPTION OF SYMBOLS 1 Float 21, 22 Frustum-shaped member 3 Weight part P Joint surface P2 Band-shaped plane part S Cavity US Upper surface of frustum

Claims (4)

A float for covering the liquid surface to float on the liquid surface and cover the liquid surface,
The liquid surface coating float is composed of two frustoconical members,
The two frustoconical members are joined at their bottom surfaces,
A cross-sectional shape perpendicular to the joint surface passing through the center of a circle that serves as a joint surface to which the frustoconical member is joined is a substantially regular hexagon.
Each of the two truncated cone-shaped members is provided with a weight portion so that a cross section perpendicular to the joint surface coincides with the liquid level when the liquid level coating float is floated on the liquid level. A float for coating a liquid surface, characterized by comprising: The float for coating a liquid surface according to claim 1, wherein the weight portion is integrally formed inside the frustoconical member. The float for coating a liquid surface according to claim 1, wherein the weight portion is formed by attaching a weight inside the truncated cone-shaped member. The strip-shaped flat portion having a width is formed on the side surface of the truncated cone-shaped member coinciding with the liquid surface when the liquid surface coating float is floated on the liquid surface. The float for liquid level coating in any one of 1-3.

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