Single-screw filter press

The utility model discloses a single-screw filter press which comprises a reducing screw shaft, wedge-shaped rod sieves are annularly distributed on the periphery of the reducing screw shaft, and a cylindrical channel for compressing and filtering materials is formed between the reducing screw shaft and the wedge-shaped rod sieves. According to the utility model, the aperture ratio of the filter element is improved, the boundary dimension of equipment is reduced, the energy consumption is reduced, and the equipment cost is greatly reduced; spring fatigue of the back pressure buffering device is avoided, the back pressure disc rotates synchronously, the dryness stability of the compressed materials is guaranteed, and the compressed materials do not need to be crushed; moreover, the blankingis uniform. 本实用新型公开了一种单螺旋压滤机，包括变径螺旋轴，所述变径螺旋轴的四周环布有楔形棒筛，所述变径螺旋轴与楔形棒筛之间形成物料压缩过滤时的圆筒通道。本实用新型提高了过滤元件的开孔率,缩小设备外形尺寸，降低能耗，极大地的降低了设备成本；避免背压缓冲装置出现弹簧疲劳情况,背压盘同步旋转，保证物料被压缩后的干度稳定,压缩后的物料，无须在经过破碎处理；而且下料均匀。