JPS6232827A - Bed for hydroponic cultivation - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention uses a chemically inert medium such as water, gravel, sand, etc., without using soil, to produce elements necessary for plant growth. This invention relates to a cultivation bed used in hydroponic cultivation in which plants are cultivated by providing a culture solution containing all of them.

[Conventional techniques and their problems] Vegetables, flowers, etc. are widely cultivated in facilities such as glass chambers and greenhouses, but due to soil-borne diseases, salt concentration disturbances, deterioration of soil physical and chemical properties, etc. Hydroponic cultivation methods that do not use soil are attracting attention due to continuous cropping problems becoming a major problem and also due to the trend of the health food boom. Cultivation beds for hydroponic cultivation have conventionally been made by forming a foam layer on a non-waterproof box, beds made by injection molding plastic, or beds made by vacuum molding in the case of large-sized beds. , or beds made of molded iron plates have been widely used.

However, the known bed has the following problems.

In other words, when a bed formed with a foam layer or a bed obtained by plastic injection molding or vacuum molding is changed in shape and dimensions in consideration of the cultivar or quantity cultivated, the foam layer must be newly foamed each time. A body layer must be formed and a mold must be made, and beds made of iron plates have poor workability and are extremely heavy, making them difficult to handle.

[Means for Solving the Problems] The present invention solves the above-mentioned problems in conventional hydroponic cultivation beds, and also has excellent weather resistance, heat resistance, waterproof property, bacterium resistance, bacteria resistance, etc. To provide a bed for hydroponic cultivation that can be assembled and disassembled freely and is extremely easy to transport.

That is, in the present invention, a side plate is provided connected to the periphery of a rectangular bottom plate, overlapping portions of adjacent peripheries of the side plates are fixed by a locking device, and the bottom plate and the side plate are arranged in a plurality of columnar hollow portions. DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention will now be explained with reference to an embodiment shown in the drawings.

Figure 1 shows a bed for hydroponic cultivation (hereinafter simply referred to as a bed)
1 is a perspective view of FIG.

The bed 1 includes a rectangular bottom plate 2 and a side plate 3 connected to the bottom plate 2. Overlapping portions 4 of adjacent peripheral edges of the side plates 3 are fixed by locking tools 5.

FIG. 2 is a perspective view of a cross section of the plastic plate 6 constituting the bed 1. FIG.

The plastic Fj, 6 has a columnar hollow part 7, a columnar hollow part 7
It is constituted by a plane sheet part 8 and a partition sheet part 9 that face each other substantially in parallel with each other in between.

The plastic plate 6 is made of thermoplastic resin.

As the thermoplastic resin, polyolefin is suitable because of its excellent weather resistance, heat resistance, waterproof property, germ resistance, bacteria resistance, etc.

Examples of the polyolefin include low density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, and the like.

Among the above polyolefins, high-density polyethylene and polypropylene, which have high rigidity, are particularly preferred.

Furthermore, by adding to these polyolefins antioxidants, ultraviolet inhibitors, inorganic fillers such as carbon black, etc., which are usually added to polyolefins, the weather resistance, heat resistance, etc. can be further improved.

The columnar hollow portion 7 of the plastic plate 6 forming the bed 1 may have any shape such as a columnar shape, a triangular columnar shape, a semicircular columnar shape, or a quadrangular columnar shape. As the plastic plate 6, the second
It is preferable that the hollow portions 7 in the shape of square columns are arranged in parallel as shown in the figure, and the total thickness D thereof is 1 to 10 nm, particularly 2 to 6 fl. It is optimal that the diameter is 50 to 1000μ, particularly 70 to 500μ, and the length of the columnar hollow portion 7 is about 2 to 61.

When the total thickness D of the plastic plate 6 exceeds 10n or the thickness d of the flat sheet and partition sheet is 1000μ
If it exceeds the rigidity of the plastic plate 6, the rigidity of the plastic plate 6 becomes excessive, and it becomes difficult to form the box body 1 by bending the plastic plate 6. Further, the total thickness D of the plastic plate 6 is 1
If the thickness of the flat sheet part 8 and the partition wall sheet part 9 is less than 50 μm, the rigidity of the plastic plate 6 will be insufficient, and the pressure of the cultivation liquid filling the inside of the formed bed 1 will be lowered. As a result, the side plate 3 of the bed 1 may deform outward, or the locking tool 5 may come off, causing the cultivation liquid to flow out.

The locking tool 5 may be of a type that pinches the overlapping portion 4 of adjacent peripheral edges of the side plate 3 and the surrounding area if necessary, or the locking tool 5 is brought into contact with the bed 1 from the inside or outside or both the inside and outside, It may be fixed with screws or nuts. The locking tool 5 can be made of metal, wood, plastic, etc., but in consideration of rust, corrosion, and strength due to contact with the cultivation solution, it may be made of a highly rigid plastic such as polypropylene or a material with good corrosion resistance such as stainless steel. Metal is preferred. Further, a reinforcing material may be abutted or fitted along the upper edge of the side plate 3. In particular, if the bed 1 is made of a material with low rigidity such as low-density polyethylene or ethylene-vinyl acetate J'4 combination, or if the bed 1 is large, It is desirable to use reinforcing material to prevent bulging. As with the locking member 5, suitable materials for the reinforcing material include highly rigid plastics such as polypropylene, or metals with good corrosion resistance such as stainless steel.

Bed 1 can be created, for example, as follows.

Fold the periphery of the rectangular plastic plate 6 to the same side.

The bent portion forms the side plate 3.

At the part where adjacent side plates 3 touch, the bed 1 is formed by bending and overlapping the overlapping plastic plates 6 without cutting them. By doing so, there is no fear that the cultivation liquid will leak from the portion where adjacent side plates 3 touch. The bent and overlapped portions are fixed by a locking tool 5.

[Effects of the Invention] The hydroponic cultivation bed according to the present invention can easily change its shape and dimensions according to the cultivar or cultivation quantity, and is lightweight and very easy to handle. It's simple. Furthermore, it can be assembled and disassembled freely and is extremely easy to transport.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a bed 1 for hydroponic cultivation. FIG. 2 is a perspective view of a cross section of the plastic plate 2. FIG. 1: Hydroponic cultivation bed 2: Bottom plate 3: Side plate 4: Overlapping part 5: Locking tool 6: Plastic plate 7: Column-shaped hollow part 8: Plane sheet part 9: Partition sheet part

Claims (1)

[Claims] A side plate is provided connected to the periphery of the rectangular bottom plate, overlapping portions of adjacent peripheries of the side plates are fixed by a locking device, and the bottom plate and the side plate are provided with a large number of columnar hollow portions in parallel. A hydroponic cultivation bed made of plastic plates.