VEHICLE FOR SAMPLING DUST-LIKE BULK MATERIALS Russian patent published in 2022 - IPC B60V1/00 E21F5/20 B08B5/04 A47L5/14 

FIELD: vehicles.

SUBSTANCE: apparatus comprises a body, an air blower, a suction air intake, a cargo container for collecting dust-like bulk materials and purifying air therefrom, bypass pipelines for passage of the flow of the material-air mixture in the direction of the cargo container, and a looped air duct for suctioning the material-air mixture. The looped air duct is made in the form of a chute containing a lower and an upper parallel walls with guides (6) installed between them, located tangentially to the inner wall (7) of the chute, forming an annular gap (8) between the guides and the inner wall of the looped chute communicating with the bypass pipelines for passage of the swirl flow of the material-air mixture in the direction of the cargo container.

EFFECT: increase in the productivity of the suctioned air-material mixture is provided due to the increase in the total area of the passage section and reduction in the aerodynamic losses on the tangentially installed curvilinear guides of the looped chute with the constant dimensions thereof.

1 cl, 3 dwg