US 11,897,700 B2 · Secondary belt cleaner with modular, torsional tensioned arm and replaceable blade tips

Abstract

A secondary belt cleaner system for cleaning the surface of the return side of an endless conveyor belt. The system includes a plurality of blade devices that are rotatably biased against the return side surface using a respective torsion spring therein. Each blade device includes a head portion formed by a blade support and a replaceable blade tip that is releasably secured to the blade support. The head portion is connected to one end of a blade arm and the other end of the blade arm is coupled to a rotatable shaft inside a housing that is fixedly secured to a support shaft having mounting brackets at each end for mounting the system transversely to the conveyor belt frame. Adjacent blade devices have different blade arm lengths in order to have the blade coverage overlap with no gaps in between. Because these blade arm lengths are different and to maintain each blade tip in contact with the return side surface, the respective torsion springs in adjacent blade devices are pretensioned to different angular amounts.

Claims11

Dependent claims

A secondary belt cleaning system for cleaning the return side surface of an endless conveyor belt having a primary belt cleaning system, said secondary belt cleaning system comprising:

a plurality of blade devices mounted to a support shaft having mounting brackets at each end of said support shaft in order to configure said plurality of blade devices to be transversely positioned against the return side surface of the conveyor belt, each one of said plurality of blade devices being pivotable in the direction of conveyor belt movement for providing relief thereto, and wherein said plurality of blade devices are uncoupled to the primary belt cleaning system;
each one of said plurality of blade devices comprising:
a torsion spring contained within a housing and aligned with a rotatable shaft that is coupled to a blade support arm;
and
a blade tip that is replaceable and which is coupled to said blade arm, said torsion spring rotatably biasing said replaceable blade tip of said blade device against the return surface of the conveyor belt.

2 more elements

A method of cleaning the surface of the return side of an endless conveyor belt having a primary belt cleaning system and a secondary belt cleaning system, said secondary belt cleaning system cleaning a return side surface of the endless conveyor belt, said method comprising:

providing a plurality of blade devices for said secondary belt cleaning system mounted to a support shaft having mounting brackets at each end of said support shaft in order to configure said plurality of blade devices to be transversely positioned against the return side surface of the conveyor belt;
rotatably biasing a blade tip of each one of said plurality of blade devices against the return side surface of the conveyor belt by pretensioning a respective torsion spring within respective blade devices, each blade tip being replaceable such that only said blade tip requires replacement when said blade tip is worn;
positioning each of said respective torsion springs in a respective housing and aligning said respective torsion spring with a respective rotatable shaft that is coupled to a respective blade arm, and wherein said respective blade arm is coupled to a respective blade tip;
and
wherein said plurality of blade devices removable independently of any displacement of the primary belt cleaning system.

2 more elements

Dependencies are inferred from the claim text.

Secondary belt cleaner with modular, torsional tensioned arm and replaceable blade tips

Life of this patent

Secondary belt cleaner with modular, torsional tensioned arm and replaceable blade tips

Life of this patent

Abstract

Claims11