The invention discloses a
spittoon rotation device. The device comprises a fixing base, a rotating cylinder, an electric disk which fixedly sleeves the rotating cylinder and an
electric motor mountedon the fixing base, a rotating hole is formed in the fixing base, the rotating cylinderrotatably sleeves in the rotating hole, the rotating cylinderrotatably sleevesa driven gear, a
magnet ring is arranged between the driven gear and the electric disk, the
magnet ring is fixedly connected with the driven gear, when the electric disk is energized, the electric disk can magnetically attract the
magnet ring, the output shaft of the electric motoris connected with a driving gear which is meshed with the driven gear, a
spittoon is mounted on the rotating cylinder, when the
spittoon is manually rotated, the electric disk and the motor are simultaneously de-energized, the electric disk does not generate a magnetic force,the output shaft of the
electric motor does not follow the rotation of the spittoon, the deceleration of the
electric motor itself is eliminated, so that in the case of manual adjustment, the spittoon can be rotated without much effort, and the operation is convenient. The device is used for the installation of the spittoon on a dental comprehensive treatment
machine.