Screw press improvements

Details Screw press improvements Screw press improvements

1982-02-10

1983-08-09

Feldman, Peter

Presses

Automatic or material triggered control

Of material addition, deposition, or discharging

100117, 100127, 100 96, B30B 914

Patent

active

043972306

ABSTRACT:
A predrainer type screw press for dewatering highly liquid materials having a feed and pressing screw in which the body of a portion of the feed section of the press is cylindrical and the body of a portion in the pressing section of the press is frusto conical having its small diameter end contiguous with the cylindrical body and of a smaller diameter. The feed portion of the screw is partially surrounded by a bar screen for permitting draining of free run liquids from a material to be dewatered. A pressure assisted overflow in the input hopper is provided to limit the material head in the hopper to prevent slippage and ensure positive feed. Baffles are provided to absorb energy from input material having a high velocity to prevent sticking of material to the screw. Pressing section filter screens are hinged to open out for easy access for cleaning and have a liquid tight seal at the ends when closed.

REFERENCES:
patent: 1662531 (1928-03-01), Meakin
patent: 2674396 (1954-04-01), Peterson
patent: 4117776 (1978-10-01), Hunt
patent: 4279197 (1981-07-01), Hunt et al.

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