DE2021584A1 - Plastic containers for the breeding of fish, algae or the like., In particular green algae, and method for its assembly - Google Patents

Description

DYNAMIT NOBEL AKTIENGESELLSCHAFT Troisdorf, District Cologne

Plastic containers for breeding fish, algae or the like, in particular of green algae, and methods for their assembly

It is known to grow in nutrient solutions such as Chlorella, whereby one larger expanses of water in wide open top endless Flow channels required. So far, individual tubs have been used for this or tub parts that merge into one another or are connected to one another, and which are currently made of glass fiber reinforced plastics or metal. The containers are, however, with larger dimensions sungen very unwieldy, and also a watertight connection of Sharing tubs with one another causes considerable difficulties. A lot of space is also required to transport the containers. The same applies mutatis mutandis to containers for breeding fish.

The invention relates to plastic containers for the stated purpose which do not have the disadvantages mentioned. she are characterized in that the walls that form the flow channels for the nutrient solutions, are inflatable, e.g. in the form of film tubes or approximately omega-shaped films, which are preferably easily foldable or rolled up Plastic bottom are glued or welded on. In the case of larger dimensions of the container, the bulkheads can be retained or individual, self-contained elements can be used later among each other by strips of appropriate plastic material iti can be connected in a manner known per se. The inflatable Walls are provided with the necessary valves, which can also be made of plastic. The endless, i.e.. Flow channels running back into themselves can e.g. be elongated oval or meandering.

Pointed throats, which are formed when blown-on film tubes Form in the corner to the floor, are expediently covered by welded or glued film strips. Using

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of partially stiff set material is also a right-angled one Formation between the bottom and the edge of the flow channels is possible.

The containers are expediently made of soft PVC films, wherein the bottom is made thicker than the walls of the film tubes. Wall thicknesses may be mentioned, for example of 2 mm or 0.8 mm. The film material must be UV-resistant, as far as it is in the practical use of the container directly exposed to light. This is not necessary for the soil, which is sufficiently shielded by the nutrient solution. In choosing the material for the manufacture of the containers it is desirable that those which are very undesirable in, for example, algae cultivation Slime does not form.

A circumferential strip on the bottom of the container is useful as a safeguard against the lifting of the empty basin by the wind. E.g. with large dimensions of the container with a width of 50 - 60 cm. This strip is placed in a trench that is excavated around the container and then filled with sand or soil.

The container or container parts according to the invention can be transported in a space-saving manner and can be easily assembled later. The inflation the walls can be filled with air, another gas or water or preferably by foaming with a plastic foam carried out v / ground, whereby e.g. urea-formaldehyde, phenol-formaldehyde products or the like come into consideration.

In the drawings a container according to the invention is for example shown in the form of an elongated oval. FIG. I shows a plan view of an assembled container, FIG II a section according to AB with enlarged edge detail Ua.

1 are film tubes which at 2 are connected to the round film J5 or the base 5 by source welding. At 4 are

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the connecting seams by painting over with a PVC solution specially secured. 6 shows an opening so that the, in the covered, pointed throat air can escape when the container is collapsed.

Figure Hb shows in detail another embodiment of the container jacket A film 7 is welded at 9 to the container bottom 8 or to a more strongly designed side part 10. 11 is a connection of the side part 10 with the bottom 8, which is particularly secured by being painted over with a PVC solution is. 12 is a welded anchoring part.

Troisdorf, 7.4.7o
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Claims (5)

Claims Plastic containers for the breeding of fish, algae or the like, in particular green algae, thereby characterized in that the walls which form the flow channels for the nutrient solutions are designed to be inflatable and glued or welded to a plastic base that is preferably easily foldable or rolled up are* 2. Container according to claim 1, characterized in that the Flow channels for the nutrient solution are elongated oval or meandering, 3. Container according to claim 1 and 2, characterized in that pointed throats which are welded round when inflated Form film tubes at the edge of the flow channel, rounded by welded or glued films. 4. Container according to claim 1-3 »characterized in that the plastic base protrudes significantly over the outer edge of the container or corresponding anchoring strips are additionally welded on * 5. Container according to claim 1-4, characterized in that it is made of soft PVC foils, with the bottom being thicker than the walls of the flow channels * Troisdorf, 7.4.70
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