DUST REMOVAL HEAD Russian patent published in 2006 - IPC A47L9/02 

FIELD: mechanical engineering, in particular, vacuum-type dust removal equipment.

SUBSTANCE: dust removal head has casing whose upper base is connected with suction system and lower base is equipped with suction slot, means for moving of casing over surface to be cleaned, and diaphragm located in horizontal position within casing and having variable area in lengthwise direction. Diaphragm divides casing cavity into upper air collecting chamber and lower air receiving chamber which is made sectioned in transverse direction. Diaphragm is fixed on casing rear wall or casing front wall and may be made symmetric or asymmetric relative to casing axial line.

EFFECT: increased dust removal efficiency owing to enabling of equal suction rate over the entire head length.

9 cl, 15 dwg