| 摘要 |
<p>External filter for filtering fluids, especially water in aquarium, is composed of a filter container, a filtering packs, a cover unit, an engine unit together with a rotor and a working chamber with a piston unit and a non-return valve. Between the working chamber (22) with the piston unit (17) and the inflow conduits of fluid circulation is situated durably separately fastened, preferably rotationally, the control unit (9) with the controlling element (1) assembled movably towards the control unit (9) having a fluid inflow hole (6), a fluid outflow hole (2) and a hole of pumping cycle (4). Reciprocal position of fluid inflow hole (6) and fluid outflow hole (2) corresponds to the inflow terminal (11) outflow terminal (12) of fluid distribution situated in the control unit (9) and between working chamber (22) and hole of pumping cycle (4) the control valve (3) is situated.</p> |
