The invention discloses a cold and heat source revolution type dual-prevention device for
sewage or
surface water and a
system thereof and relates to a device for preventing blocking and scaling while extracting cold and heat in
sewage or
surface water by utilizing a
heat pump technology and a
system thereof, belonging to the technical field of energy and aiming to effectively solve the problem of heat exchange equipment blockage by impurities in the
sewage or the
surface water and on how to reduce the growth thickness of
dirt in the heat exchange equipment. The device comprises a shell, a valve body, a scraper, a filter piece 1, a filter piece 2, a water inlet, a water outlet, two connecting ports, a rotating component, and the like. The
system comprises a
heat pump set, the device, a connecting pipeline, and the like. When one filter piece works, the other filter piece is used for back washing, the rotating component intermittently changes the direction of the valve body to ensure that the two filter pieces are used for alternately filtering and back washing, and filtered sewage or surface water enters the
heat pump set or the heat exchange device again to carry out cold and heat exchange. The invention is suitable for a cold and heat
source system of the sewage or the surface water.