Logic controlled traversing shower

Details Logic controlled traversing shower Logic controlled traversing shower

1997-12-16

1999-10-19

Wyse, Thomas G.

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210744, 210784, 210104, 210107, 210143, 210391, 210402, B01D 3306, B01D 3346

Patent

active

059683724

ABSTRACT:
A high pressure automatic lime mud precoat filter cake heel removal system provides for steady kiln operation. The system provides multiple points of washing located such that washing of the entire filter can be accomplished in a short period of time. Each washing point comprises preferably two nozzles at predetermined angles to optimize washing of the filter media. The system is reciprocatively driven by a fractional horsepower gear motor connected to a torque converting coupling which is, in turn, connected to a threaded jack shaft or lead screw. The gear motor is controlled by a dual speed reversing variable frequency drive; limit switches automatically control cycling of the system in conjunction with logic circuits and sensors. This system is variably controlled so that cycle times may range optionally from approximately one to approximately five hours in length.

REFERENCES:
patent: 3869389 (1975-03-01), Rokitansky
patent: 4115265 (1978-09-01), Otte et al.
patent: 4450080 (1984-05-01), Dodd
patent: 4695381 (1987-09-01), Ragnegard
patent: 4697292 (1987-10-01), La Valley
patent: 4986881 (1991-01-01), Funk
patent: 5149448 (1992-09-01), Mattelmaki
patent: 5470472 (1995-11-01), Baird et al.
patent: 5589079 (1996-12-01), Park et al.

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