Electric butterfly valve with anti-backflow device

The utility model discloses an electric butterfly valve with an anti-backflow device, which comprises a valve body of the electric butterfly valve, a liquid inlet cavity of the valve body is communicated with an urban water supply upstream end, a liquid outlet cavity of the valve body is communicated with an urban water supply downstream end, a lower assembly block is arranged at the lower end of the valve body, and the lower assembly block is communicated with the liquid inlet cavity and the liquid outlet cavity of the valve body. The outer wall of the lower assembly block is provided with an external channel with a backflow prevention function, and the external channel with the backflow prevention function guides backflow water to the upper valve rod. Automatic closing of the valve plate after opening is achieved through the anti-backflow valve plate closing spring between the lower assembly block and the lower valve rod, locking of the valve plate and the upper valve rod is achieved by inserting the reset