ANTI-SIPHON MECHANISM OF MINIATURE WATER PUMP, AND MINIATURE WATER PUMP

Disclosed is an anti-siphon mechanism of a miniature water pump, the miniature water pump comprising an upper cover (1) and a valve plate (2) mounted below the upper cover (1), wherein a side face of the upper cover (1) is provided with a water outlet (4) in a penetrating manner; the upper cover (1) is further provided with an air outlet and a water inlet; the valve plate (2) is internally provided with an anti-siphon mechanism; the anti-siphon mechanism comprises air distribution chambers provided on the valve plate (2), partition areas are provided between the air distribution chambers and divide the interior thereof into an air outlet cavity, a water inlet cavity and a water outlet cavity; and a valve body device is mounted in the air outlet cavity, and a flow stop device is mounted in the water outlet cavity. As such, the problems of a traditional miniature water pump wherein liquid in a vacuum sealed container (14) cannot be smoothly pumped out or siphonage occurs after the liquid is discharged can be so