Water supply tank

The invention discloses a water supply tank, and relates to the technical field of drinking water equipment. A separating and cleaning part is arranged in the box body and can move up and down along the inner side wall of the box body, the peripheral side face of the separating and cleaning part is in sealed connection with the inner side wall of the box body, the separating and cleaning part can separate the interior of the box body into an upper partition and a lower partition, and the lower partition is used for containing drinking water; disinfection devices are fixedly arranged on the inner top surface of the box body and the separating and cleaning part, and are arranged in the upper subarea; a power device is arranged outside the box body, the power device is in transmission connection with the separation cleaning component, and the power device can provide power for the vertical movement of the separation cleaning component; the water dispenser is convenient to clean and disinfect in time and does not