Rotary pipetting device

The utility model discloses a rotary pipetting device which comprises a plurality of pipetting assemblies and a driving motor, and each pipetting assembly comprises a shaft rod, a connecting part and a pipetting suction pipe; the top of the shaft rod is provided with a reset spring and provided with a gear arranged on the shaft rod in a sleeving mode. The connecting part is arranged at the bottom of the shaft rod; the pipetting suction pipe is connected with the connecting part, and when the shaft rod sucks the sample liquid, the sample liquid is contained in the pipetting suction pipe; an output shaft of the driving motor is connected with the rotating gear, the rotating gear is meshed with the transmission component, when electric power is supplied to the driving motor, power output of the driving motor drives the transmission component to rotate, and the transmission component rotates to drive the gear on the shaft rod to rotate, so that the pipetting suction pipe rotates. According to the rotary pipetting