Vacuum conveying device with impurity removal function

The utility model discloses a vacuum conveying device with an impurity removal function, which comprises a fixed frame and a vacuum conveying tank, the vacuum conveying device comprises a fixed box and a vacuum conveying tank, a top cover is mounted on the upper end face of the fixed box, two screen frames distributed left and right are mounted in the fixed box, the left end of the bottom end face of the fixed box is communicated with a discharging pipe, and the lower end of the bottom end face of the fixed box is communicated with a discharging pipe. A fixed frame is arranged below the fixed box, spice powder particles and spice particles are placed in corresponding screen frames, a vibration motor is started, so that the screen frames vibrate to remove impurities in the spice powder particles or the spice particles, materials are conveniently conveyed, then a vacuum pump is started, an exhaust pipe exhausts air in a vacuum conveying tank, and the spice powder particles and the spice particles are conveyed t