The belt vacuum filter uses filter cloth as filter medium, making full use of gravity and vacuum suction. It is an efficient solid-liquid separation equipment. The whole ring rubber belt is used as a vacuum chamber. The belt is operated continuously by the motor, and the filter cloth is expanded and synchronized on the adhesive tape. The adhesive tape is connected with the annular friction belt on the vacuum platform to form a water seal. The slurry is evenly distributed on the filter cloth through the distributor. When the vacuum chamber is connected with the vacuum system, the vacuum zone is formed on the tape. The filter cloth is collected through the transverse grooves on the tape and enters the vacuum chamber through a small hole, and the solid material is intercepted on the filter cloth to form a filter C. AIKE. The liquid entering the vacuum chamber is discharged through a steam water separator. With the movement of the rubber belt, the cake formed in turn filtered into the cake washing area and the drying area. Finally, the filter cloth is separated from the adhesive tape and the filter cake is discharged on the unloading roller.