Anti-backflow metal rotor flow meter

The utility model provides an anti-backflow metal rotor flow meter which comprises a glass tube, a cavity which is gradually enlarged from bottom to top is arranged in the glass tube, a water outlet channel is arranged on the upper portion of the glass tube, the bottom of the water outlet channel extends into the cavity, a plurality of water outlet holes are formed in the bottom of the water outlet channel, and an anti-backflow device is arranged at the position of the water outlet channel. A water inlet channel is arranged at the lower part of the glass tube, a filter plate is arranged at the water inlet channel, a floater is arranged in the glass tube, an outlet soft plug is arranged at the upper end of the glass tube, and an inlet soft plug is arranged at the lower end of the glass tube. The anti-backflow flow meter has the advantages of being simple, practical, convenient to operate, capable of preventing backflow of water in the flow meter, capable of guaranteeing accuracy of reading of the flow meter, c