Bulk material transportation tank capable of receiving and discharging materials under negative pressure

The utility model relates to bulk cargo conveying equipment, in particular to a bulk cargo conveying tank capable of receiving and discharging materials under negative pressure, which comprises a tank body connected with a negative pressure device through a pipeline. The tank body is fixedly connected with one end of the material suction pipe, so that negative pressure is formed in the tank body through the negative pressure device, and materials are sucked through the other end of the material suction pipe; the tank body is fixedly connected with one end of the discharging pipe, the other end of the discharging pipe is connected with the negative pressure device, and the discharging device is arranged on the discharging pipe, so that negative pressure is formed through the negative pressure device, materials in the tank body are sucked out through the discharging pipe, and the materials are discharged through the discharging device. The advantages of negative-pressure material suction are considered, and mea