Classification and impurity removal device for primary processing of rhizome medicinal materials

The invention discloses a primary processing, grading and impurity removing device for rhizome medicinal materials, which comprises a grading device, a first flush device and a second flush device, the grading device comprises a screening frame, the screening frame is obliquely arranged, at least two groups of screens are arranged in the screening frame, and the screen mesh gap of the upper screen is larger than that of the lower screen; a plurality of material pouring chutes are arranged on one side of the screening frame, a first flushing device is arranged on one side of each material pouring chute, and the front end of each first flushing device is arranged downwards in an inclined mode. A second flushing device is arranged on one side of the first flushing device, the structure of the second flushing device is the same as that of the first flushing device, and the difference between the second flushing device and the first flushing device is that the rear end of the second flushing device inclines downwa