Water inlet valve

A water inlet valve, comprising a water inlet pipe, a top cover, a water stop pad, a back-pressure pad, a swing arm, and a buoy, a water inlet cavity being formed by the top cover and an interior of the water inlet pipe, a water sealing piston and an eccentric shaft being provided in the water inlet cavity and located below the water stop pad, one end of the eccentric shaft being inserted through the water sealing piston, another end of the eccentric shaft, in a closed state, extending out of the water inlet cavity, the water sealing piston being brought by the eccentric shaft to move up and down along an axial direction to close or open a water inlet of a water stop surface;

• a water storage cylinder being fixed to an outside of the water inlet pipe, the water storage cylinder having a water storage cavity at an upper portion thereof and a lower water cavity at a lower portion thereof, a top of the water storage cavity being open, the lower water cavity having an upper air vent and a lower water inlet, a siphon being installed in the water storage cavity, one end of the siphon being disposed close to a bottom of the water storage cavity, another end of the siphon being inserted through the bottom of the water storage cavity and communicated with the lower water cavity, a floater being provided in the water storage cavity, a first magnetic element being installed on top of the floater;
• an outside of the water storage cylinder being provided with a small buoy in a liftable way, the small buoy being provided with an opening and closing plate corresponding to the upper air vent of the lower water cavity, the opening and closing plate being capable of opening or closing the upper air vent as the small buoy is lifted or dropped;
• a circumferential edge of the top cover being formed with a gutter, the gutter being formed with a water drop opening facing the water storage cavity of the water storage cylinder;
• the outsides of the water inlet pipe and the top cover being provided with a connecting rod, a lever, and a bolt, one end of the connecting rod being connected to one end of the lever, another end of the connecting rod being fixed to another end of the eccentric shaft, an energy storage spring being provided on the connecting rod or the lever, another end of the lever being provided with the bolt which can be plugged or pulled out, the bolt being provided with a second magnetic element corresponding to the first magnetic element for controlling the bolt to be pulled out and a restoring spring for the bolt to be restored and plugged.