| 摘要 |
The invention relates to fish breeding, in particular to fish breeding installations.The fish breeding installation comprises a rectangular pool for the fish (1), a water supply device (2) and a system for drainage of water with impurities, which includes a drainage device (3), a siphon pipeline (4) with a valve (5), a hose (6) and a discharge chute (7). The drainage device (3) consists of an outer drainage pipe (11), in which is tightly inserted with the possibility of rotation inside it an inner drainage pipe. The outer pipe (11) is closed at one end, to which is movably attached a wheel with an elastic strap. One end of the inner pipe is sealed by means of a second wheel with elastic strap, the bush of which is tightly inserted into the inner pipe and fixed therein with retainers. In the lower part of the outer pipe (11) is made a longitudinal slit, covered with a protective grille, and under it along its entire length is fixed a vertical impurity collection brush. On the inner pipe along its entire length are made longitudinal slots placed in series one after the other on the circumference of the pipe with displacement by the width of the slot. |
