Velometer for electric screw pump

The utility model relates to a velometer for an electric screw pump for an oil well in an oil field, which comprises a mechanical part and a circuit part, wherein the mechanical part comprises a baseplate, an upper support saddle, an upper fixed rod, lower fixed rods, a lower support saddle, a steel magnet, a fixed frame, springs, a spring shaft and clamps; the circuit part comprises a reed switch, a speaker, a triode, a power supply, a sound module and a ceramic capacitor; the normally open reed switch is fixedly arranged at the middle of the baseplate of the mechanical part, the telescopic upper fixed rod is fixedly arranged at the upper part of the reed switch by the upper support saddle, and the telescopic double lower fixed rods are fixedly arranged at the lower part of the reed switch by the lower support saddle; and the steel magnet is fixed on the fixed frame, the fixed frame is mounted at the middle of the spring shaft equipped with the springs at two ends, and two ends of the spring shaft penetrate