Scraper blade assembly
AssigneeAshbrook Corporation
InventorJonathan Paul Isaacs
Life of this patent
Estimating the term…
Abstract
A scraper blade assembly utilizes an over-center spring to bias the scraper blade assembly both into engagement and out of engagement with a conveyor, such as a moving belt, on a device for separating solids from liquids. The over-center spring extends between a fixed attachment point on the device and a pivoting attachment point on a handle secured to the scraper blade assembly. The invention is particularly applicable to belt filter presses and gravity belt sludge thickeners. An over-center spring may be secured to both ends of the scraper blade assembly to minimize torsional deformation of the scraper blade by the material being separated from the moving belt.
Claims19
A scraper blade assembly for a conveyor on a device for separating solids and liquids, comprising:
- a pivoting scraper blade support;
- a first fixed attachment point on said device for separating solids and liquids;
- a second attachment point on said scraper blade support;
- an over-center spring extending between said first and second attachment points;
- and
- a scraper blade located on said scraper blade support, said scraper blade biased into engagement with said conveyor in a first position by said over-center spring, said over-center spring and said scraper blade support biasing said scraper blade in a second position out of engagement with said conveyor.
A scraper blade assembly for a moving belt on a device for separating solids and liquids, comprising:
- a pivoting scraper blade support including a rigid member having a first end and a second end;
- two fixed attachment points on said device for separating solids and liquids located adjacent said first end and second end of said rigid member, respectively;
- a handle positioned at each of said first and second ends of said rigid member;
- a pivoting attachment point positioned on each of said handles, with a pivot point for said scraper blade support positionable between said fixed and pivoting attachment points;
- an over-center spring extending between each of said fixed and pivoting attachment points;
- and
- a scraper blade located on said scraper blade support, said scraper blade biased into engagement with said belt in a first position by said over-center springs, said scraper blade support pivotable to disengage said scraper blade with said belt, said over-center springs biasing said scraper blade and said scraper blade support in the disengaged position.
Dependencies are inferred from the claim text.