Mixer dustproof construction and mixer

The utility model relates to a mechanical device field, problem that the bearing that aims at solving the stirring pivot of current mixer got into the piece dust of material easily provides mixer dustproof construction and mixer. The mixer dustproof construction, stirring pivot lower extreme from the chamber that holds that the mixer was worn out in the last trompil of mixer housing, just stir thepivot stretch out the chamber holds and first shaft part through lieing in bearing and bearing frame rotatable coupling in the shell of mixer that holds outside the chamber, the lower extreme of stirring pivot still includes the second shaft part adjacent with first shaft part, the diameter of second shaft part is greater than first shaft part, secondary shaft period number is in holding the intracavity, the mixer dustproof construction includes oil blanket, oil blanket nest, oil blanket nest overlaps in the periphery of second shaft part, and the periphery sealing connection of oil blanket nest global in the trompil