Integrated oil storage tank

The invention discloses an integrated oil storage tank. The integrated oil storage tank comprises an annular main oil tank body used for storing return oil, the main oil tank body is connected with ananti-icing heat dissipation tank coaxially arranged with the main oil tank body, the anti-icing heat dissipation tank is provided with a pneumatic flow channel communicating with an inner shaft channel of the main oil tank body, and the inner shaft channel and the pneumatic flow channel are used for allowing separated airflow containing sand and dust to be discharged outwards; a rotary flow channel extending in a bent mode along the circumferential line of the anti-icing heat dissipation tank is arranged in the anti-icing heat dissipation tank, an oil inlet of the rotary flow channel communicates with the output end of an oil return pipe used for conveying hot return oil, an oil outlet of the rotary flow channel communicates with the main oil tank body, the rotary flow channel is used forenabling the hot return o