Tea winnowing machine

The invention discloses a tea winnowing machine which comprises a rack, an air flue, a feeder, a winnowing chamber, and a dedusting chamber, wherein the air flue is fixedly arranged on the rack. The feeder, the winnowing chamber, and the dedusting chamber are arranged above the air flue, wherein the dedusting chamber is provided with a dedusting opening. One side of the winnowing chamber is connected with the tail end of the air flue, and the other side of the winnowing chamber is connected with the dedusting chamber. The winnowing chamber comprises a winnowing chamber cavity body, and a plurality of tea outlet openings are arranged below the winnowing chamber. A spoiler is fixedly arranged above each tea outlet opening, and a tea-blocking device is arranged on the wall of the winnowing chamber cavity body. The tea-blocking device comprises a rail and a tea-blocking plate, wherein the rail is arranged on the inner wall of the winnowing chamber cavity body. Two ends of the tea-blocking plate are connected with the rail through a bearing, and can slide in the rail. Under the effects of an S-shaped air flue and a guide plate, the tea winnowing machine can blow out wind which is big end down, wherein the wind is distributed in linear mode. A vortex which is arranged above the tea outlet opening of the winnowing chamber is removed through the spoiler, and a vortex which is arranged above the winnowing chamber cavity body is removed by adjusting air quantity of a dedusting winnowing machine so as to be beneficial to improving the quality of the tea winnowing machine.