EFFICIENT WATER-SAVING STARCH SLURRY AND RESIDUE SEPARATION SIEVE AND SEPARATING METHOD

摘要

Disclosed is a starch slurry and residue separation sieve, comprising: a horizontal sieve cylinder (1), a sieve mesh (2), a spiral propelling extrusion rod (4), a rotary driving unit (9), and a washing spray pipe (11). A feed inlet (16) is provided in one side of the horizontal sieve cylinder (1), and a slurry outlet (15) and a residue outlet (14) are provided in the other side of the horizontal sieve cylinder. The sieve mesh (2) is arranged in the horizontal sieve cylinder and is of a conical cylinder shape, and the diameter of the section of the sieve mesh gradually decreases from the feed inlet to the residue outlet. The spiral propelling extrusion rod (4) is arranged in the sieve mesh and comprises a spiral propelling extrusion rod shaft and spiral blades. The rotary driving unit (9) respectively drives the sieve mesh (2) and the spiral propelling extrusion rod (4) to rotate reversely. The washing spray pipe (11) is used for washing off slurry and residue on the horizontal sieve cylinder (1). Further provided is a separation method using the separation sieve. The separation sieve plays a synergistic role in mechanical disturbance and hydraulic overflow elutriation sieving at the same time, and compared with traditional curved mesh sieves and high-speed centrifugal sieves, the separation sieve can reduce the amount of clean water used and the wastewater yield, and the concentration of obtained starch milk is increased; and extruded and separated potato residues are relatively low in water content, thereby facilitating subsequent utilization.