An incised surface is formed in one surface of a suction plate on the basis of a slit and a pattern roller is placed in a room, which is provided at a thickness part of the slit in which the incised surface is formed, to rotate in place so that the pattern roller partially protrudes outward from the incised surface and forms patterns on a surface of fleeces which are backwashed while passing through the slit so as to increase a filtration area of the fleeces. The backwash may be performed and the filtration area of the fleeces may be increased using the room. The spline-shaped patterns including splines cut to a certain length, patterns including several annular protrusions formed on an outer circumference of the pattern roller, spline-shaped patterns formed on the outer circumference, lattice-shaped patterns, and the like may be formed on a surface of the pattern roller.

An incised surface is formed in one surface of a suction plate on the basis of a slit and a pattern roller is placed in a room, which is provided at a thickness part of the slit in which the incised surface is formed, to rotate in place so that the pattern roller partially protrudes outward from the incised surface and forms patterns on a surface of fleeces which are backwashed while passing through the slit so as to increase a filtration area of the fleeces. The backwash may be performed and the filtration area of the fleeces may be increased using the room. The spline-shaped patterns including splines cut to a certain length, patterns including several annular protrusions formed on an outer circumference of the pattern roller, spline-shaped patterns formed on the outer circumference, lattice-shaped patterns, and the like may be formed on a surface of the pattern roller.

The present disclosure relates to the technical field of solid-liquid separation of grain fermentation, and provides a solid-liquid separation mechanism and solid-liquid separation method for grain fermentation. A filter screen cylinder mechanism is inserted and mounted at an upper end of a rotating seat. According to the present disclosure, the rotation of the filter screen cylinder mechanism and a rotating disc mechanism has a speed difference, to realize the rolling and solid-liquid separation of fermented grain on an inner wall of the filter screen cylinder mechanism by rolling cylinders; and the rolling and solid-liquid separation is performed on fermented grain on an inner wall of the filter screen plate by the rolling cylinders, and the liquid in the fermented grain on the inner wall of the filter screen plate is rolled out, achieving a more thorough solid-liquid separation.