The tea
drying device with the screening function comprises an obliquely-installed box body, an internal
drying pipe is fixedly connected to the interior of the box body, the air inlet end of the internal
drying pipe is fixedly connected with a first
warm air blower, the internal drying
pipe and one end of the box body are rotationally connected with a drying filter cylinder, and the other end of the box body is fixedly connected with a second
warm air blower. A plurality of grading filter plates are fixedly connected to the interior of the drying filter cylinder, a plurality of back-flushing pipes are arranged above the internal drying pipe, a plurality of back-flushing
shovel plates are slidably connected to the lower portion of the internal drying pipe, a rotary driving
assembly is fixedly connected to the interior of the box body, and the rotary driving
assembly comprises a driving gear ring, a
synchronizing shaft, a driving gear and a rotating motor; under the synergistic effect of the internal drying pipe and the air holes of the back-flushing
shovel plate, hot air flow is vertically sprayed out from the air holes of the
shovel plate while the tea leaves are mechanically turned and stirred, so that penetrability drying is formed; the backflushing pipe reversely jets
airflow to clean the grading filter plate,
sieve pores are kept unobstructed, it is ensured that hot air evenly penetrates through the
tea leaf layer, and local over-wet or over-dry is reduced.