US 4,976,206 AGranted

Mechanism for the removal of slag in incineration plants

AssigneeW+E Umwelttechnik AG

InventorsHansruedi Steiner, Hans Weber

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Abstract

A mechanism for the removal of incombustible residues from an incineration plant includes a slag shaft, a slag tank positioned under a mouth of the slag shaft and filled with water extending up to the mouth of the shaft. The incombustible residues dropping from the incineration plant furnace grate through the slag shaft collect in the slag tank and are discharged therefrom by a pusher plate via an upwardly sloping discharge path. The pusher plate is in operative connection with two thrust piston drives via two thrust rods and two rocking levers. The joint connecting the thrust rod with the rocking lever is arranged in such a way that it is not immersed in the water bath either in the rear position of the pusher plate or in the discharge position of the pusher plate. Through the direct coupling to the joint, the thrust rod and the rocking lever can operate in the same vertical plane, so that no additional moments are exerted on the rocking shaft. This leads to a longer life for the lint and also to increased operational reliability and easier maintenance.

Claims9

Dependent claims

A mechanism for the removal of slag from an incineration plant, particularly for refuse incineration, having a substantially vertically positioned slag shaft provided at one end of a furnace grate and a slag tank in communication with said shaft and having a water bath therein, and an upwardly sloping discharge path means, the mechanism comprising a ram including a pusher plate positioned in said tank;

and thrust piston drive means operatively connected to said pusher plate to impart to said plate a reciprocating motion to move the slag contained in said bath towards said discharge path means, said piston drive means being positioned along an outside bottom wall of said tank and being connected to said pusher plate by means of a linkage, said linkage including at least one push rod connected at one end thereof to said pusher plate and having another end remote from said pusher plate and positioned outside of said tank and above the level of the water filling said slag tank throughout the entire stroke of said pusher plate, a rocking shaft mounted on a wall of said slag tank opposite said discharge path means, and at least one toggle lever fixed to said rocking shaft and connecting said push-rod and a piston of said thrust piston drive means to each other.

Dependencies are inferred from the claim text.