Rotary screen for a combine harvester
AssigneeAGCO International GmbH
InventorFederico Rossato
Life of this patent
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Abstract
A rotary screen is provided for cleaning an air flow for use by a combine harvester, for example for use by a cooling system. An annular brush is used to provide a seal between a rotating screen member and a static plate. The brush extends generally radially outwardly from a support towards the rotary screen member, which is fitted around the brush so that a radially outer surface of the brush contacts an inner surface of a seal region of the rotary screen member. The seal region tapers radially outwardly towards its axial end and also overlaps the brush. In this way, the brush is protected from damage and also has a long lifetime because it still performs its sealing function even after experiencing wear.
Claims8
A rotary screen for cleaning an air flow for use by a combine harvester, comprising:
- a fixed plate having an opening for delivering filtered air;
- an annular brush support mounted to the fixed plate;
- an annular brush extending generally radially outwardly from the brush support;
- and
- a rotary screen member which is rotatable relative to the fixed plate and fitted around the brush, wherein an axial end region of the rotary screen member adjacent the fixed plate comprises a seal region, wherein a radially outer surface of the brush contacts an inner surface of the seal region to form a seal;
- wherein the seal region tapers radially outwardly towards the axial end region of the rotary screen member, and wherein the seal region overlaps the brush such that the axial end region is closer to the fixed plate than the brush is.
Dependencies are inferred from the claim text.