JP5726657B2 - Liquid level coating float - Google Patents

Description

  The present invention provides a liquid level coating that floats on the surface of the liquid and covers the liquid level in order to prevent the gas from being dissolved in the liquid or the liquid from evaporating and preventing the liquid from being kept warm and the odor from being emitted. For floats. More specifically, since the liquid level in a small container is covered, even if the floats are made small, the liquids can be lined up cleanly without clogging the floats or forming irregular gaps. The present invention relates to a surface coating float.

  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 arranged on the liquid surface, the liquid surface is arranged in a circle, and the liquid surface cannot be completely blocked, and it is necessary to mix and introduce small spheres. It cannot be closed.

  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 in order to solve such a problem, and for a liquid surface coating having a structure that can always be arranged on the liquid surface without any gaps regardless of the direction in which the float floats on the liquid surface. The purpose is to provide a float.

The float for surface coating of the present invention uses a regular hexagonal plate having a predetermined thickness as a bottom plate, and the first, second and third plates having the same regular hexagonal shape as the bottom plate are the regular hexagons of the bottom plate. Two intersections between two adjacent side surfaces of the first, second and third plates and two adjacent side surfaces of the bottom plate pass through a central axis perpendicular to the shape surface. The bottom plate is passed through and overlapped so as to form an intersection point at the intersection point, and at the position of the intersection point, by reducing the thickness of the bottom plate and the first, second and third plates, the intersection point becomes the apex. When the molded body is placed in a liquid, a portion corresponding to either the bottom plate or the first, second, and third plates is on the liquid surface. weight of the molded product is set to appear, the bottom plate, first, second and third Even when any portion corresponding to a plate appeared on the liquid surface, the planar shape viewed from above has become regular hexagon.

  Further, the molded body has a shape in which at least a part of a space surrounded by a portion corresponding to the bottom plate and two portions corresponding to the first, second, and third plates is embedded with a molding material. It may be formed as follows. By doing so, it is possible to prevent the protruding portion of another float from entering the gap, and it is preferable because the problem that two or more floats are piled up hardly occurs.

  The molded body has a shape embedded with a molding material so that a space surrounded by a portion corresponding to the bottom plate and two portions corresponding to the first, second, and third plates is connected in a plane. You may form so that it may be a polyhedron.

  Here, the polyhedron is a solid surrounded by a plurality of polygonal faces, and the angle formed by the two polygons at the side (edge) shared by the two polygons is 180 ° or less when viewed from the center of the solid. Means a solid. The polygonal surface includes those having some unevenness.

  The molded body has a space surrounded by a portion corresponding to the bottom plate and two portions corresponding to the first, second, and third plates, a portion corresponding to the bottom plate constituting the space, a first The space is formed in a shape embedded with a molding material so that a surface connecting three points where two end portions of the portions corresponding to the first, second and third plates intersect is an exposed surface. It is preferable from a viewpoint of preventing adsorption | suction with another float. Here, the end portion refers to one side of a side surface of a portion corresponding to each plate.

  The surface of the molded body may be left, and the inside may be hollowed to be hollow. Also, a weight can be placed inside the hollow polyhedron.

  According to the liquid surface coating float of the present invention, it has a molding material corresponding to the bottom plate and the first, second and third plates, and the gap portion is a gap. Since the material is lighter than the liquid, when the float is thrown into the liquid, any of the parts corresponding to the bottom plate, the first plate, the second plate, and the third plate is liquid. Appears on the surface. That is, even if the gap corresponding to any of the plates is placed in the liquid so that the gap is located on the liquid level, the portion below the liquid level in the gap is filled with the liquid, Since there is a molding material that is lighter than the liquid, a portion of the molding material, that is, a portion corresponding to a plate, floats on the liquid surface and is stabilized. This relationship is because even if the molded body material is embedded in the gap portion corresponding to the plate to make a polyhedron, the surface filling the gap is not a continuous surface as one surface of the entire molded body. If the center part of the gap is just at the liquid level, the balance can be maintained, but if it is slightly shifted, the balance cannot be maintained, and the part corresponding to the plate is at the liquid level. Stable and stable.

  Therefore, the part corresponding to any of the bottom plate, the first plate, the second plate, and the third plate is always floating on the liquid surface, and when viewed from above, it becomes a regular hexagonal shape, The side of the part corresponding to each plate appears. Since each side surface has the same width and the same length, when the side surfaces of the floats are adjacent to each other, they are brought into close contact by surface tension. Therefore, by collecting a plurality of floats, the liquid surface can be covered without forming a gap in the liquid surface.

  Furthermore, since the plane portion parallel to the liquid surface has only a side portion corresponding to each plate and does not have a large area plane or a conical surface or curved surface close to a plane, the problem that two or more floats are stacked It hardly occurs. Even in rare cases, the bottom float sinks due to the weight of the float on top, and it becomes unstable and does not stabilize in the stacked state. This tendency is the same even when the gap portion corresponding to each plate is embedded (for example, in the case of polyhedron), but when the plane parallel to the portion corresponding to the bottom plate becomes flat, other floats May overlap. In such a case, at least this surface does not become a flat surface but is embedded so as to be a concave surface, so that the attracting force due to the surface tension does not work, so the problem of overlapping does not occur.

It is a perspective explanatory view showing one embodiment of the float for surface covering of the present invention. It is explanatory drawing of the upper surface and cross section of the state which the part corresponded to the baseplate and the 1st-3rd board for demonstrating the structure of the float for liquid level coating | coated of this invention. It is explanatory drawing which shows an example of an arrangement | sequence when the float for liquid level coating | coated of this invention is floated on the liquid. It is explanatory drawing which shows the other example of an arrangement | sequence when the float for liquid level coating | coated of this invention is floated on the liquid. It is explanatory drawing which shows the further another example of an arrangement | sequence when the float for liquid level coating | coated of this invention is floated on the liquid. It is a perspective explanatory view showing other embodiments of the float for covering a liquid level of the present invention. It is a perspective explanatory view showing further another embodiment of the float for liquid level covering of the present invention. It is explanatory drawing which shows the structural example of the conventional float for surface coating.

  Next, the float for coating a liquid surface according to the present invention will be described in detail with reference to the accompanying drawings. The liquid surface coating float according to the present invention is illustrated in perspective view in FIG. 1, in FIG. 2, a top view in which the plates for explaining the structure of the molded body are combined, and the bottom plate 1 and the first plate 2. As shown in the cross-sectional explanatory diagrams of the state, a regular hexagonal plate having a predetermined thickness b is a bottom plate 1 and the same regular hexagonal first, second and third plates as the bottom plate 1 are shown. 2, 3, 4 passing through a central axis C perpendicular to the regular hexagonal surface of the bottom plate 1, and an intersection line between two adjacent side surfaces of each of the first, second and third plates 2, 3, 4 P (that is, the corner of the side surface) and the intersection line P (side corner of the side surface) of two adjacent side surfaces of the bottom plate 1 form an intersection O at two locations (in other words, both corners are at the center). Overlaid on the bottom plate 1 (to match). And in the position of the intersection point O, it becomes the molded object 10 of the structure formed so that the intersection point O may become a vertex by making the board thickness of the bottom plate 1 and the 1st, 2nd and 3rd board thin. Yes. And when this molded object 10 is put in the liquid, it shape | molds so that the part 1a, 2a, 3a, 4a corresponding to either a bottom plate or the 1st, 2nd and 3rd plate may appear on a liquid level. The weight of the body 10 is set.

  The bottom plate 1 has a side size a and a thickness b determined by a desired float size according to the purpose of use. That is, the float 10 can be enlarged when the tank for storing the liquid is large. However, when the liquid is put into an indoor or experimental 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 fulfilled. Therefore, in order to cover the surface of the liquid placed 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, the length of one side of the regular hexagon. A is set to a size of about 5 to 25 mm and a thickness b is set to about 5 to 20 mm. However, this small float can be used as it is even when the liquid in the large container is covered, or a larger float 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. The thickness b is a portion where adjacent floats are adsorbed by surface tension. Therefore, if the thickness is too thin, the adsorbing force is lost, and the adsorbing force acts strongly on the portion appearing above the liquid surface. While it is necessary to come out above the liquid level, it is necessary to consider variation in specific gravity. At least about 5 mm is necessary, and an upper limit of about 20 mm is sufficient, but the size is not limited. In the case of a large container, when the aforementioned diagonal is increased, it is preferable to increase the thickness b in accordance with the ratio of increasing the diagonal.

  Such a regular hexagonal plate is placed horizontally as a single bottom plate 1 so that the first to third plates 2, 3, 4 pass through a central axis C perpendicular to the surface of the bottom plate 1, and the first The third plate 2, 3, 4 has a bottom plate so that each corner overlaps with a different corner of the bottom plate 1, that is, at a position where the first to third plates 2, 3, 4 have rotated 60 ° respectively. It is integrated so that it may overlap the corner of one regular hexagon. More specifically, the center part of the intersection line P where the two side walls of the bottom plate 1 intersect and the center part of the intersection line P where the two side walls of the first to third plates 2, 3, 4 intersect each other. They are superposed so as to coincide and form a vertex (intersection point O). In other words, the overlapping portion of each plate is a structure in which the overlapping portion is omitted. FIG. 2A shows the top view and FIG. 2B shows the center of the first plate 2. The cross-sectional explanatory drawing in the section is shown. And in the part where the intersection line P crosses, each board is formed in the structure thinned by the edge part so that the point O where the intersection line P crosses may become a regular hexagonal vertex.

  The structure of the float molded body 10 according to the present invention is such that the regular hexagonal corners of the bottom plate 1 coincide with the regular hexagonal corners of the first to third plates 2, 3, and 4. The third plates 2, 3, and 4 are stacked so as to pass through the central axis C of the bottom plate 1, in other words, as shown in FIG. 2B, the bottom plate 1 and the first plate 2 is overlapped with the second plate 3 at a position where the first plate 2 is rotated by 60 ° around the central axis C, and the third plate is further rotated by 60 ° in the same direction. A similar structure can be obtained by overlapping the plates 4. And it is the same as that of the above-mentioned that the plate | board thickness of the corner | angular part is made thin and a vertex (intersection point O) is formed.

  It can be formed by forming a mold according to the outer shape of the structure thus formed and injecting a molding material such as resin by injection molding or the like. As the material, for example, a synthetic resin such as polyethylene or polypropylene, an elastic member such as rubber or elastomer, or a metal material 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 can be molded, molded by mixing a foaming agent with a vulcanizing agent in paste-like rubber, or the interior can be made hollow as described later. 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 this molded body is placed in various liquids such as water, oil, alcohol, etc., the portion 1a corresponding to the bottom plate or the portions 2a to 4a corresponding to the first to third plates float on the liquid surface. Designed by its weight and buoyancy. That is, since the portion 1a corresponding to the bottom plate and the portions 2a, 3a, and 4a corresponding to the first to third plates are positions that bisect the molded body 10, the overall weight of the molded body 10 and the molded body It is formed so that the weight of the liquid which is half of the total volume of 10 (the weight is different even with the same volume due to water, oil, alcohol, etc.) is substantially equal. If the weight of the molded body 10 is too large, more than half of the molded body 10 sinks. Therefore, a light material is used or, as described above, a foaming agent is added and the foaming agent is foamed to form the molded body 10. A foamed molded body in which a void portion is formed is formed, or the interior of the molded body 10 is formed hollow. When the inside of the molded body 10 is made hollow, a polyhedral structure, which will be described later, becomes very easy to manufacture. When the liquid is water, a portion corresponding to the aforementioned plate can appear on the water surface by forming the molded body 10 so that the specific gravity is about 0.5.

  Since the liquid surface coating float of the present invention is the molded body 10 formed to have such a structure and weight, for example, even if a large number of them are randomly thrown into the liquid, they float on the liquid surface without overlapping. . That is, there is no vertical and horizontal positional relationship of the molded body 10, and since it is a shape close to a sphere and symmetrical in all directions, there is no need to rotate up like rising up in the liquid, It floats on the liquid surface due to its buoyancy, and as described above, it becomes unstable when the part other than the part corresponding to the plate comes to the liquid level, and the part corresponding to the plate closest to the liquid level appears on the liquid level and is stable. . In addition, even if the top and bottom overlap when thrown into the liquid, gravity below the buoyant force acts on the float below it, so it sinks into the liquid and floats to the side and floats up to the liquid surface. . Therefore, all the floats float on the liquid level. On the other hand, each float floating on the liquid surface has a regular hexagonal shape when viewed from above because the portion corresponding to the plate appears on the water surface as described above. In addition, each side of the regular hexagon is a side surface having a thickness b corresponding to the plate, and the weight is adjusted so that more than half of the side appears on the liquid surface. Therefore, the side surfaces of each side of the adjacent float are attracted and attracted by the surface tension.

  The figure which looked at this adsorbed state seen from the upper surface is shown in FIGS. That is, FIG. 3 is a plan view showing a state in which the three molded bodies 10 all have portions 1a corresponding to the bottom plate appear and adsorbed on the liquid surface, and FIG. It is a top view in case the part 2a-4a corresponded to a 3rd board appears on the liquid level (It is the same shape even if any of the part 2a-4a corresponded to a 1st-3rd board appears on a liquid level. FIG. 5 is a plan view showing a state where both of them are mixed. In this way, even if the plurality of molded bodies 10 (floats) float on the liquid level in any state, each is always a regular hexagon when viewed from above, and the side surface has a certain width, It is possible to fill the liquid surface without causing a gap by adsorption due to surface tension.

  FIG. 6 is a perspective explanatory view similar to FIG. 1, showing another embodiment of the liquid surface coating float of the present invention. This float (molded body 10) is molded so that the surface of the gaps of the portions 2a to 4a corresponding to the first to third plates of the liquid surface coating molded body 10 shown in FIG. It has a structure embedded with materials. As a result, it is a polyhedron, and as shown in FIG. 6, there is no space in each gap portion of the portions 2 a to 4 a corresponding to the first to third plates. The structure and weight of the corners corresponding to the other plates are the same as in the example shown in FIG.

  By adopting such a structure, even when a large number of floats are thrown into the liquid surface at the same time, even if the floats are densely packed, one portion corresponding to the plate of another float (molded body 10) is formed in the gap. The portions 1a to 4a corresponding to the respective plates are exposed as they are on the surface as in the case of FIG. 1, so that the portions 1a to 4a corresponding to the respective plates are exposed on the liquid surface as in the example shown in FIG. It can adsorb | suck with another float (molded object 10). On the other hand, as shown in FIG. 6, when the portion 1 a corresponding to the bottom plate comes to the liquid level, the upper surface 5 becomes flat, and thus the upper surface 5 of another float (molded body 10) rides on each other. If you stick to it. However, the other float (molded body 10) can be adsorbed only when it overlaps in the same direction as the float (molded body 10) shown in FIG. However, even if the part corresponding to each plate (the part corresponding to the side wall) gets on, it is not stable because it is small, and it immediately falls and overlaps. There is nothing. Moreover, even if it overlaps in the same direction as the state shown in FIG. 6 and rides on top, if another float (molded body 10) rides on this, the weight is doubled. The float that sinks below the surface tension is eliminated, and the float that sinks in the liquid is very likely to separate from the float on the surface and float on the liquid surface. Therefore, the floats (molded bodies 10) hardly overlap each other.

  However, in order to further reduce this possibility, the surface tension can be reduced by forming a concave surface on the upper surface 5 shown in FIG. 6 excluding the portions 2a to 4a corresponding to the first to third plates. Will no longer work, so there is even less chance of overlapping. Further, as described above, the inclined surface 6 hardly forms other surfaces, but can similarly be formed as a concave surface or a convex surface. Since the above-mentioned upper surface 5 may lie on the liquid surface and be joined to another float (molded body 10), if it protrudes from the portions 2a to 4a corresponding to the respective plates, it will interfere, but this slope 6 Then, since it is not a surface joined to another float (molded body 10), there is no problem even if it is convex if it is small.

  Further, instead of forming a concave surface or a convex surface on each surface, it is also possible to form a concave portion that becomes a continuous surface from the slope 6 to the upper surface (lower surface) 5. An example thereof is shown in FIG. 7 as a perspective explanatory view similar to FIG. That is, the float (molded body 10) in FIG. 7 has a space surrounded by a portion corresponding to the bottom plate and two portions corresponding to the first, second, and third plates. The space is formed such that the surface connecting the three points where the two end portions of the portion corresponding to the bottom plate and the portions corresponding to the first, second and third plates intersect becomes the exposed surface 7. It has a structure embedded with materials. The end means the side of the side of the portion corresponding to the plate. For example, the point where the end of the portion 1a corresponding to the bottom plate and the portion 2a corresponding to the first plate intersect is Q, the first plate. The point where the portion 2a corresponding to the portion 2a and the portion 3a corresponding to the second plate intersect is R, and the point where the portion 3a corresponding to the second plate and the portion 1a corresponding to the bottom plate intersect is S. The surface connecting Q, R, and S may be a flat surface, a concave surface, or a convex surface as long as it is small. In a space sandwiched between two portions corresponding to the first, second, and third plates, a wall surface is formed with the surface surrounded by these three points Q, R, and S (exposed surface 7) as the surface. Accordingly, the gaps corresponding to these plates can be made small, but they cannot be adsorbed to each other, and a hollow portion is easily formed inside, which is even more preferable.

  Since the outer surface of the polyhedron-shaped molded body 10 or the molded body 10 having an embedded surface made concave is formed by a mold, it can be easily obtained by blow molding, rotational molding, or gas injection molding. The inside can also be formed hollow. It is also possible to divide such a molded body 10 into two and form hollow ones by molding, and bond the two by ultrasonic welding or the like to form a hollow one. Such a hollow structure is effective both in terms of adjusting the specific gravity when there is no material suitable for the specific gravity and in terms of saving material. Forming such a hollow body is much easier than the structure shown in FIG. Moreover, when saving material by making it hollow, when specific gravity becomes too small, a specific gravity can also be adjusted by putting a weight in a hollow part.

DESCRIPTION OF SYMBOLS 1 Bottom plate 1a Portion corresponding to the bottom plate 2 First plate 2a Portion corresponding to the first plate 3 Second plate 3a Portion corresponding to the second plate 4 Third plate 4a Portion corresponding to the third plate 5 Upper surface 6 Slope P Intersection line O Intersection (vertex)

Claims (6)

A regular hexagonal plate having a predetermined thickness is used as a bottom plate, and the first, second and third plates having the same regular hexagonal shape as the bottom plate pass through a central axis perpendicular to the regular hexagonal surface of the bottom plate. The bottom plate is formed such that an intersection line between two adjacent side surfaces of each of the first, second and third plates and an intersection line between two adjacent side surfaces of the bottom plate form intersections at two locations. A molded body having a structure in which the intersection is formed at the apex by reducing the thickness of the bottom plate and the first, second, and third plates at the position of the intersection while passing through and overlapping. And when the molded body is placed in a liquid, the weight of the molded body is such that a portion corresponding to either the bottom plate or the first, second and third plates appears on the liquid surface. There is set, the bottom plate, first, either the front part corresponding to the second and third plate Even when they appear on the liquid surface, the planar shape viewed from above Ru regular hexagon der liquid surface coating float. The molded body has a shape in which at least a part of a space surrounded by a portion corresponding to the bottom plate and two portions corresponding to the first, second, and third plates is embedded with a molding material. The float for liquid level coating | cover of Claim 1 formed in this. The molded body has a shape embedded with a molding material so that a space surrounded by a portion corresponding to the bottom plate and two portions corresponding to the first, second, and third plates is connected in a plane. The float for coating a liquid surface according to claim 2, wherein the float is formed to be a polyhedron. The molded body has a space surrounded by a portion corresponding to the bottom plate and two portions corresponding to the first, second, and third plates, a portion corresponding to the bottom plate constituting the space, a first The space is formed in a shape embedded with a molding material so that a surface connecting three points where two end portions of the portions corresponding to the first, second and third plates intersect is an exposed surface. The float for coating a liquid surface according to claim 2. The float for liquid level coating | cover of any one of Claims 2-4 in which the surface of the part by which the said molded object was embedded is formed in concave shape. The float for coating a liquid surface according to any one of claims 1 to 5, wherein the surface of the molded body is left, and the inside is hollowed to form a hollow.

Images