Automatic uniform suction device

The invention relates to an automatic uniform suction device. The device includes a storage tank, a medium and a supporting mechanism; the storage tank contains the medium and is provided with a medium outlet; the medium outlet is connected to a delivery line set; the delivery line set is connected to a transportation mechanism; the transportation mechanism is connected to an extraction pipe set;a floating mechanism is installed on the extraction pipe set; the supporting mechanism supports the whole device; the whole device is connected to a floating disc through a connecting mechanism when being installed in a floating roof tank or an inner floating roof tank; when the medium in the storage tank is an upper layer medium, the single suction port automatic uniform suction device can be adopted; and when the medium in the storage tank is the uniform medium, the multi-suction port automatic uniform suction device can be adopted. For different extraction media, process conditions of a single suction port or multi