Solar energy-saving water heater device

The utility model is applicable to the field of water heaters, and provides a solar energy-saving water heater device, which comprises a mounting frame, a heat preservation water tank mounted on the mounting frame, a water inlet, a pressure relief opening and a water outlet arranged on the heat preservation water tank, and a support frame fixedly provided with an upper circulating pipe and a lower circulating pipe. Water is injected into the heat preservation water tank through the water inlet, the water in the heat preservation water tank passes through the upper circulating pipe, the heat energy conversion pipe and the lower circulating pipe and then enters the heat preservation water tank, and the heat energy conversion pipe is used for absorbing solar energy to heat the water; the rotating shaft drives the cleaning sleeve to clean the heat energy conversion pipe, meanwhile, the rotating assembly drives the rotating shaft to rotate in the mode that the rotating shaft moves up and down, and the rotating sha