| 摘要 |
A vacuum-type chaff winnowing stone picker is provided to sort out stones and chaffs by integrating the stone picker and a chaff winnower by making an inner space between lower and upper housings in a weak vacuum state. An upper housing(100) provided with an opened inside and connected to a vacuum blower(10) at the lateral side is composed of a raw material input port(20) receiving raw materials containing foreign materials; a raw material discharge port(30) discharging the raw materials; an air inflow port(40) flowing in the air; and a chaff discharge port(50) installed at a part where the chaffs contained in the brown rice drop down along an inner wall by turbulence generated by the air supplied through the air inflow port by the raw material. A lower housing(200) comprises a mesh sieve(110) formed of plural pores on the bottom side and inclined upward; a shaking unit shaking the mesh sieve; a brown rice inlet port receiving the brown rice separated from the chaff, from the raw material discharge port; a brown rice discharge port(120); and a stone discharge port(130). The brown rice sorted by the flow velocity of the air flowing in through the pores of the mesh sieve in operating the vacuum blower falls down in a floating state by self-weight and the sorted brown rice is obliquely moved downward and discharged through the brown rice discharge port. The stones contained in the brown rice are obliquely moved upward and discharged through the stone discharge port. |
