JP2002223649A - Vegetation float - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible, strong and inexpensive vegetation float. SOLUTION: This vegetation float is obtained by forming slits or holes in a flexible foamed plastic sheet having closed cells in a proper density and then wrapping the obtained float together and a vegetation base material with a net.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vegetation float floating on a lake to purify water.

[0002]

2. Description of the Related Art A variety of vegetation floats floating on lakes and marshes for purification of lakes and aesthetic beauty have been proposed.
As a form, there are a type in which a vegetation base material and a buoyancy body are set in a hard frame or the like, and a type in which a vegetation base material and a buoyancy body of a soft foamed plastic are wrapped in a net shape.

An example of the former technique is Japanese Utility Model Laid-Open No. 6-384.
98 and JP-A-8-252036. However, this method inevitably increases the number of parts and inevitably increases the price. In addition, there is a disadvantage that it is hard to follow the movement of waves because it is hard.

[0004] An example of the latter technique is disclosed in Japanese Patent Laid-Open No. 10-32.
3134, etc., which have a configuration in which a net-like resin foam is placed under the vegetation base material so as not to hinder the growth of plant roots, but a net made of a string-like foam that was not originally integrated Therefore, the mechanical strength is weak, and there are drawbacks such as easy deformation when used for a long time. However, it had some advantages, such as a flexible structure and a relatively low cost.

[0005]

As described above, vegetation floats used for water purification are generally used in large quantities, so that they are preferably as inexpensive as possible. Although it is necessary to adopt a soft configuration so that it can sufficiently follow the waves, it is required to have a strong structure against deformation.

[0006]

In order to solve the above problem, a foamed plastic sheet having a flexible closed cell foam having a thickness of 2 to 3 centimeters is used as a buoyant body in a vegetation float of a net wrapping type. In order to make it easy for the roots of the plant to penetrate, make slits or make small holes evenly at a certain density. The thickness or the number of buoyancy bodies can be selected as required.

[0007]

The foamed plastic sheet as a buoyant body is placed in the lowermost portion or the middle layer in the net to give the buoyancy of the vegetation float, and also functions as a shape retaining material for retaining the shape of the vegetation float.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partially enlarged perspective view showing an outline of a buoyant body.
The whole is about 1 to 2 meters on each side. Reference numeral 1 denotes a flexible foam sheet 1 having a thickness of 2 to 3 cm and having closed cells made of, for example, polyethylene, which has small holes or slits 2 of an appropriate density so that plant roots can penetrate.

FIG. 2 is a perspective view showing an outline of a vegetation float according to the present invention, with a part cut away to show the inside, and the foam sheet 1 is arranged in the lowermost and middle layers. A vegetation base material 3 such as futon cotton or coconut fiber is put between the foam sheets and the uppermost layer, and the whole is wrapped in a durable net 4. Alternatively, it is fixed with an insulated lock so that the whole body does not shift.

When actually used in a lake or marshes, a plurality of these are connected to be used in a large area. This is shown in FIG. The vegetation float is anchored by an anchor 6 so as not to move.

[0011]

As described above, the vegetation float of the present invention can be provided at a relatively low cost because the number of parts is small and the manufacturing process is easy. Since the buoyant body contained is one foam sheet, deformation of the vegetation float can be prevented. Further, since the area of the hole or slit to be drilled is small, the decrease in buoyancy can be minimized. Its flexible structure makes it easy to follow the waves.

[Brief description of the drawings]

FIG. 1 is a partially enlarged perspective view showing an outline of a buoyancy body of the present invention.

FIG. 2 is a perspective view showing an outline of a vegetation float according to the present invention, which is partially cut away.

FIG. 3 is a view showing a state in which a plurality of vegetation floats of the present invention are connected and floated.

[Explanation of symbols]

 1. 1. Foam plastic sheet 2. slit or hole Vegetation base material 4. Net 5. 5. Place fixed vertically through anchor

Claims (3)

[Claims] 1. A buoyancy body for vegetation floats, wherein small holes or slits are uniformly formed at a certain density so that plant roots can easily penetrate a foamed plastic sheet having closed cells. 2. A vegetation float, wherein a vegetation base material and a buoyant body according to claim 1 are superposed in a layer and wrapped in a net to be integrated. 3. A vegetation float characterized in that several buoyancy bodies according to claim 1 are superposed and integrated to form a vegetation base.