Raw water heating mechanism of desalted water station

The utility model relates to the field of heat exchange devices, and discloses a desalted water station raw water heating mechanism which comprises a heat exchange box, a raw water tank is arranged at the bottom end of the heat exchange box, a water injection port is fixedly connected to the upper portion of the left end of the heat exchange box, a water outlet is formed in the bottom of the right side in the heat exchange box, and a steam inlet is fixedly connected to the left side of the top end of the heat exchange box. The tops of the multiple partition plates are fixedly connected with heat exchange pipes, and the left end of the three-way connecting block is fixedly connected with a steam outlet. According to the utility model, boiler waste steam is utilized, the steam is conveyed into the plurality of heat exchange tubes in the heat exchange box through the steam inlet, and the heat of the steam is transferred to the surfaces of the heat exchange tubes, so that cold raw water in the heat exchange box i