| 摘要 |
FIELD: measurement equipment.SUBSTANCE: metering device is provided with a supply channel coming from a sand tank that is opened to a rotating blade wheel with sharp-pointed teeth located in the form of a star in a cross section. Blade wheel is provided with sand by means of adjacent teeth with filling chambers; at that, a sand supply channel hole opening to the blade wheel has a rectangular cross section, and the supply channel hole, if to see in the rotation axis direction, expands symmetrically relative to rotation axis of the blade wheel.EFFECT: increasing operating safety of the metering device without performing any maintenance.2 cl, 2 dwg |
