Radio frequency milk flow sensor

The utility model discloses a radio frequency milk flow sensor which comprises flange plates, the number of the flange plates is two, a measuring pipeline is fixedly connected between the two flange plates, liquid inlet holes are formed in the opposite sides of the two flange plates, and fixing devices are fixedly connected in the liquid inlet holes. The fixing device comprises an outer shell, a limiting spring is fixedly connected to the inner wall of the outer shell, and a limiting shell is fixedly connected to the side, away from the outer shell, of the limiting spring, so that the application range and practicability of the device are greatly improved, and a protective sleeve is further arranged in the limiting shell, so that the safety of the device is improved. And by means of a sponge body in the protection sleeve, the impact compression force of the limiting shell on the milk conveying pipe in the fixing process can be effectively relieved, so that the phenomenon that the milk conveying pipe is crushe