NL1001298C2 - Open air reservoir formed by four dykes, used in agriculture or for market gardens - Google Patents

Abstract

The basin (2), which forms the reservoir, is formed on the ground by four dykes (3) which form a rectangle. Bottom of basin and dykes are covered with waterproof material (4). The water, which has been collected in the reservoir, is protected by netting (5) through which rainwater can pass. At least one float (6), which is attached to the covering net, ensures that the netting lies just clear of the surface of the water and that the net follows the water level when it rises or falls. A ballast weight (7), which lies against the edge of the dyke, ensures that the net is held taut.

Description

Fluid reservoir

The invention relates to a liquid reservoir, in particular a liquid reservoir for opening up in the open air for the collection of rainwater and recirculated water, comprising a basin surrounding a dyke body covered with plastic foil.

Such a liquid reservoir is mainly used in agriculture and horticulture to collect rainwater, groundwater and surface water. The collected water is used for sprinkling in, for example, 10 greenhouses and the like, while also consumed water is recycled to the reservoir.

Contamination of the water in the reservoir must be prevented, since if the water is used for irrigation of, for example, greenhouses, droplet dosing is often used. With such a dosage there is a risk that filters, drip mechanism and the like used, will become clogged by impurities in the water. In order to prevent this, the dike body and the bottom of the basin 20 are covered with plastic foil.

The plastic film, in particular on the dike body, must be protected against the irradiation of ultraviolet sunlight in order to avoid disintegration of the plastic material in the long run. On-25 growth on the outer slope as well as damage from rain and wind must also be prevented.

Furthermore, algae formation in the water and a chemical reaction between algae and substances such as fertilizers must be avoided. It is therefore the object of the invention to provide a solution to the problems outlined above.

1001298.

2

This is achieved according to the invention by a covering layer of water-permeable open tissue structure extending over the basin surface and the dike body.

In this way both algae formation in the water is prevented and protection of the plastic on the dike body is provided. Weed growth on the outer slope as well as damage to it from rain and wind is also avoided. The open fabric structure allows water to pass on the one hand and the irradiation of sunlight on the other hand to be avoided.

In order to maintain contact between the cover layer and the water surface at a varying liquid level in the basin, at least one floating body is connected to the cover layer.

In order to maintain a close contact between the slope of the dike body and the covering layer, even with varying liquid levels, the covering layer is further provided with ba Hast bodies. As a result, the covering layer 20 is always kept tight against the slope, so that the covering layer is not detached from the dike body at high wind speeds.

Preferably, the ballast bodies are freely displaceable on the cover layer. In order to ensure that the covering layer lies tightly against the dike body, the length of the portion of the covering layer, counted from the point of attachment of the floating body to the crown of the dike body, is chosen such that it is approximately the length of the slope of the dike body. matches.

Further details and advantages will emerge from the description and drawings of the exemplary embodiment.

In the drawing: figure 1 shows a perspective view of a liquid reservoir according to the invention, and figure 2 shows a cross-sectional view in perspective of the dike body and connecting part of the basin.

100129a.

3

The liquid reservoir 1 is formed by the basin 2, which is bounded by the dike body 3. The dike body, like the bottom of the basin, is covered with a plastic foil layer 4, the purpose of which is to avoid contamination of the water in the reservoir. In order to prevent algae growth and to protect the plastic layer on the slope of the dike body against ultraviolet solar radiation and to protect the outside slope from weeds and to protect against damage from wind and rain, a covering layer 5 is applied. This cover layer 5 has an open fabric structure in order to allow the rainwater to enter the basin and not to prevent oxygen absorption. At least one floating body 6 is connected to the cover layer 5, which ensures that the cover layer 5 always follows the liquid level in the basin. At least one ballast body 7 is freely movable on the cover layer 5. In the embodiment, in the form of a cylindrical body. Thanks to the ballast body, the covering layer 5 is always held tightly against the slope 20 of the dike body. This prevents the covering layer from separating from the dike body, for example at high wind speeds. For this purpose, a ballast body 7 is located between the crown 9 of the dike body and the floating body 6. In order to prevent the cylindrical ballast body 7 from rolling off from the bank 8 at a very low liquid level, the cross section of the floating body 6 is chosen to be equal to or larger than that of the ballast body 7.

The distance between the crown of the dike body 9 and the point of attachment of the floating body 6 with the covering layer roughly corresponds to the length of the slope 8 of the dike body.

According to the invention, a self-regulating construction for keeping both the liquid in the basin and the surrounding dike body always covered. The above-described objectives have been achieved at each water level. It is further achieved that in the part of the basin located between the floating body 6 1001298.

4 and the ballast body 7 can collect dirt in the form of leaves and the like.

1001298.

Claims (7)

Liquid reservoir, in particular liquid reservoir for open-air installation for the collection of rainwater and recirculated water, comprising a basin surrounded by a plastic foil covered dyke body 5, characterized by a cover extending over the basin surface and the dyke body layer of water-permeable open fabric structure. 2. Liquid reservoir according to claim 1, characterized in that at least one floating body is connected to the cover layer. Liquid reservoir according to claims 1-2, characterized in that the cover layer is provided with base bodies. 4. Liquid reservoir according to claims 1-3, characterized in that the ba Hast bodies are freely movable on the cover layer. Liquid reservoir according to claims 1-4, characterized in that the length of the part of the covering layer from the point of attachment of the floating body 20 to the crown of the dyke body corresponds approximately to the length of the slope of the dyke body. Liquid reservoir according to claim 5, characterized in that the housing body lies between the floating body and the crown of the dike body. Liquid reservoir according to claims 1-6, characterized in that the cross-sectional area of the floating body is chosen to be equal to or larger than that of the ballast body. 1001298.