Siphon type self-suction pipe middle pump and control method thereof

The invention discloses a siphon type self-suction pipe middle pump which mainly comprises a pump body, a pump cavity formed in the pump body, a motor arranged in the pump cavity, an impeller arranged in the pump cavity and coaxially connected with the motor, and a vacuum pump arranged on the pump body and communicated with the pump cavity. And the control system is arranged outside the pump body and used for controlling start and stop of the motor and the vacuum pump and detecting the water level of the pump cavity and the impeller. The control method comprises the steps that an external power source is connected, the liquid level sensor collects water level information in the pump cavity, the impeller and the water inlet pipe in real time, and the collected information is transmitted to the signal control chip U in real time for signal increasing processing. The siphon principle is creatively applied to the in-pipe pump through a technical method, so that the defect that when a traditional in-pipe pump is u