Construction for recreational and educational purposes

摘要

1. Arrangement for recreational and educational purposes, characterized by a plurality of plastic pipe which can be joined by coupling members to form a fluid installation, can be fitted into each other the end portions of plastic pipes and organs adjacent coupling and serving in each case one O-ring arranged in an annular intermediate as retaining and sealing groove. 2. Arrangement according to claim 1, characterized in that each plastic tube has in each of its end portions, an annular groove with an O-ring and the outer diameter of the plastic tube corresponds diameter bore of the coupling. 3. An arrangement according to one of claims 1 and 2, characterized in that the plastic tubes connected together are arranged between a container or tank located in a lowered position and a raised position and located on the plastic tube is inserted into the container located in lower position is arranged a pump. 4. Arrangement according to claim 1, wherein the coupling members comprise a tubular member bent at right angles, which is introduced on the one hand a body rotating drainage, provided with a bore passing L-shaped, being free, at a position organ drainage, the mouth or mouth located inside of the tubular part of the bore step while the position thereof turned 180 is directed against the wall of the tubular member and thereby closes . 5. Arrangement according to claim 1, wherein the coupling members comprise a tubular shaped part T in a branch of which a closure member, which cylindrical stem are obliquely cut in the middle of the tubular member is introduced , so that the closure member allows free flow path at a position thereof, while in the rotated position closes the passage 180 and in the intermediate positions, correspondingly reduced. 6. Device according to one of claims 1 to 5, characterized by a support element having a base surface and in the upper part a recess or notch which fits the contour of the plastic tubes. 7. Construction for recreational and educational purposes.