Selecting powder machine's air inlet unit

The utility model discloses a selecting powder machine's air inlet unit, including selection powder machine to and set up in the toper fill of selection powder machine bottom, the middle part of coneis encircleed and is provided with annular intake pipe, and the outer wall equipartition of annular intake pipe is provided with the admission valve of a plurality of adjustable sizes. The admission valve includes the valve body, is provided with at least one fan -type's air inlet on the valve body, and the valve block with air inlet matched with is installed to inside rotation of valve body, andthe middle part swivelling joint of valve body has the knob with valve block fixed connection. The utility model discloses replaced the import of the only fixed size of traditional selection powder machine, avoided because can not adjusting of air input and the selection powder size that leads to can not be selected, selecting powder machine's the fixed problem of ejection of compact quality, theutility model discloses sim