| 摘要 |
MACHINE FOR INTERCEPTING SOLID CONSTITUENTS IN LIQUID STREAMS A machine for intercepting solid constituents in a liquid stream, such as sewage, has a frame which carries a downwardly sloping screen positionable in and across the stream so that the liquid flows through but the outer side of the upwardly and forwardly sloping screen intercepts solid constituents. The screen has a stationary grate with parallel grate bars extending from the lower to the upper end of the screen, and a mobile grate with parallel grate bars which alternate with the grate bars of the stationary grate. The mobile grate is repeatedly movable forwardly of the stationary grate to lift off the stationary grate bars those solid constituents which were intercepted by the two sets of grate bars, and the mobile grate is then moved upwardly to raise the lifted solid constituents along the outer side of the stationary grate prior to redepositing the lifted constituents on the stationary grate. The mechanism for repeatedly moving the mobile grate employs a gearmotor and a parallel motion which is composed of followers movable along stationary tracks at the lateral sides of the screen and levers which are coupled to the mobile grate and to the followers and one of which receives motion from the motor. Alternatively, the levers are pivotable by a parallel motion which is driven by the motor by way of a crank or a feed screw.
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