| 摘要 |
Hydraulic syphon with automatic reflux, working in tanks disposed at whichever height from the discharge point, particularly for the discharge of the tanks for the flushing of water closets. Two cylindrical tubular elements are disposed, in a position reciprocally inverted with respect to each other, into two other cylindrical tubular elements in such a way as to form annular communicating cavities, which in the syphon's resting position are filled with liquid and gas under pressure. It is thereby obtained an equilibrium between the outer hydrostatic pressure and that inside the syphon. Bell shaped floating means are solid with one of the cylindrical tubular elements, which are however all solid with each other and, through these, with sealing means made of elastic material, which take care of the closing and respectively opening of the tanks. A push-button pump having a high inertia introduces gas into the syphon, and recalls it back in the stage of aspiration; by this it breaks the hydrostatic equilibrium and, by causing the sealing means to raise up from their seat, it produces the discharge of the tank. The floating means serve to keep the sealing means in the lifted position at distance from their seat, together with the entire syphon, for the entire duration of the discharge.
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