Liquid purification or separation – Flow – fluid pressure or material level – responsive – Diverse sensing means
Patent
1997-10-14
1999-06-08
Upton, Christopher
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Diverse sensing means
210523, 210524, 198608, 198662, 198676, B01D 2124
Patent
active
059102438
ABSTRACT:
A device for displacing sediment, for example sand, from the bottom of a liquid-filled container (20) to a receptacle device (29) in which first conveyor (22) is disposed in the edge region (21) of the container (20) near the bottom of the container to receive sediment which accumulates at the bottom. The first conveyor (22) has a rotating screw thread (24) located in a casing (23) and includes a discharge portion (27). A second conveyor (40) consisting of a rotary screw thread (44) in a casing (41) has an infeed opening (43) located at the lower portion of the container, preferably below its bottom, and a discharge portion (42) located above the maximum filling level of the container (20). A mechanical device (50) displaces the sediment from the discharge portion (27) of the first conveyor (22) to the infeed opening (43) of the second conveyor (40) via a tube 50a having a "thread-free" portion nearest the second conveyor. The discharge portion (42) of the second conveyor (40) discharges sediment to a receptacle (29) either directly via a transport device (60).
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Spirac Engineering AB
Upton Christopher
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