Efficient energy-saving water supply device

The utility model discloses an efficient energy-saving water supply device which comprises a water supply structure, a filtering structure, a cleaning structure, a sewage discharging structure and a transmission structure, and the water supply structure comprises a water inlet pipe, a water outlet pipe and a sealing outer shell. Sewage enters the sealing shell through the water inlet pipe, impurities are clamped in meshes in the surface of the belt type filter screen after being filtered by the belt type filter screen, the belt type filter screen is driven to be conveyed along with rotation of the first rotating shaft, the second rotating shaft and the third rotating shaft, and when the belt type filter screen is conveyed to the lower surface of a driven rod, the driven rod rotates to drive the belt type filter screen to rotate. According to the water supply device, impurities clamped in the meshes are ejected out downwards by the ejection block, so that the purpose of cleaning the impurities and the like on