Widely used in alfalfa grass drying, alcohol dregs drying, straw drying, wood chips drying, marigold drying, shavings drying, ginkgo biloba drying, herbal medicine drying, beer dregs drying, liquor dregs drying, potato starch dregs drying, cassava dregs drying, barley malt drying, melon seeds drying, sugarcane dregs drying, hawthorn drying, canola cake drying, vegetable drying, etc., the thermal efficiency of up to 80%, significantly higher than the domestic equipment of the same kind. The machine is mainly composed of rotary body, rotating body, rotating body, rotating body and rotating body.