Water meter with heat preservation structure

The utility model relates to the technical field of water meter heat preservation, and discloses a water meter with a heat preservation structure, which comprises a water meter body, a transparent lens is rotatably connected to the middle of the water meter body, a first shell is slidably connected to the outer side of the water meter body, and a second shell is rotatably connected to the bottom of the first shell. First expansion foam is fixedly connected to the middle of the first shell and the middle of the second shell, connecting assemblies are installed on the top of the first shell and the top of the second shell, and the periphery of the water meter body is sleeved with a first sleeve shell and a second sleeve shell from bottom to top; the first shell and the second shell are both connected to the middle of the first sleeve shell and the middle of the second sleeve shell in a sliding mode. According to the heat preservation structure, under the cooperation of the first expansion foam, the first shell,