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Gravity flow sludge load-out system

  • US 6,447,674 B1
  • Filed: 08/17/2000
  • Issued: 09/10/2002
  • Est. Priority Date: 08/17/2000
  • Status: Expired due to Term
First Claim
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1. A system for controlling the flow rate at which sludge is out-loaded from hoppers and the rate at which the hoppers are refilled, said system comprising:

  • a plurality of hoppers, each having an outlet at its bottom and an inlet at its top, said hoppers for receiving, storing and delivering a volume of sludge load-out;

    a sludge distribution container in communication with a sludge dewatering device of a liquid treatment facility;

    a powered slide gate interposed between each of said hopper inlets and said sludge distribution container, said powered slide gates having a fully opened and a fully closed position and infinite variable positions therebetween;

    hopper refill control means for automatically controlling each of said slide gates and the order in which, and the rate at which, each hopper is refilled after out-loading;

    a sludge metering gate located at the outlet of each of said bottom of said hoppers, said sludge metering gates having a fully opened and a fully closed position and infinite variable positions therebetween;

    load-out flow control means for automatically adjusting the position of said sludge metering gates for controlling the flow of sludge load-out through said sludge gates; and

    a support framework on which said hopper and said sludge gate are mounted.

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