One kind of dust grain drying apparatus for a heat pump system

The present invention relates to a dust collecting apparatus for a heat pump system grain drying, the dust removal means comprises a cylindrical main air duct and the cyclone; the primary air duct is provided at the top with a volute, the volute is connected below the upper diagonal flow fan, is provided with oblique flow fan below the volute, the volute downward through the duct connecting the duct joint; the cyclone gas outlet is connected to the top of the volute, the cyclone inlet duct by pipe connection on the lower side wall of the volute. Dust removing device proposed by the present invention, the swash gas flow by a centrifugal flow fan, the primary air duct of the food debris to concentrate near the volute wall; then collected by cyclone separation, to achieve the purpose of dust grain; Meanwhile, the main the main air flow enters the duct through the secondary dust sieve heat pump system, enabling removal and efficient utilization of the heat pump system circulating air drying food.