Automatic sampling device for alumina powder

The utility model relates to the technical field of alumina powder sampling, and discloses an automatic alumina powder sampling device which comprises a suction pipeline, a first tank body, a negative pressure device, a discharge device and a controller, the material suction pipeline is communicated with the first tank body; the negative pressure device is communicated with the middle part or the upper part of the first tank body and is used for extracting air from the first tank body; the first discharging device is arranged on the discharging hole of the first tank body and is used for opening or closing the discharging hole of the first tank body; and the negative pressure device is connected with the controller. The automatic alumina powder sampling device adopts a vacuum automatic extraction mode, prevents a sampling result from being affected by moisture of a sample, avoids manual operation as much as possible, is high in automation performance and sampling efficiency, saves time and labor, and is not e