Energy-saving and environment-friendly heat exchanger with adjustable heat exchange area

The utility model discloses a heat exchange area adjustable energy-saving environment-friendly heat exchanger which comprises a plurality of supporting frames, a heat exchange cylinder is installed above the supporting frames, a spiral partition plate is installed in the heat exchange cylinder, one side of the heat exchange cylinder is connected with a first cover body, the other side of the heat exchange cylinder is connected with a second cover body, and a cold liquid pipe is installed between the first cover body and the second cover body. The first cover body is connected with a first round cover, the first cover body is connected with a hot liquid inlet pipeline communicated with the heat exchange cylinder, the first round cover is provided with a cold liquid outlet header pipe communicated with the cold liquid pipe, the second cover body is connected with a second round cover, the second cover body is connected with a hot liquid outlet pipeline communicated with the heat exchange cylinder, and the hot l