AIR-PASSING SEPARATOR Russian patent published in 2007 - IPC B07B7/00 B02C23/00 

FIELD: building industry; mining industry; other industries; devices for grading and separation of the bulk powdery materials.

SUBSTANCE: the invention is pertaining to the devices for grading and separation of the bulk powdery materials, in particular, to the crystalline silicon after its crushing and may be used by the roller mills, the roll mills and the centrifugal mills in many branches of the modern industry. The air-passing separator of the bulk materials contains the body with the inlet and outlet branch-pipes located on the same vertical and the collector of the recycled material. The body is made in the form of the cylinder with the conical reducers on the butts, to the upper butt of which the branch-pipe is affixed, and to the lower butt - the cylindrical collector of the recycled material separated from the body by the diaphragm with the central hole, in which there is the pipe of the upcoming stream of the aerial mixture with affixed on it below the diaphragm the component made in the form of the truncated cone. On the upper edge of the pipe there are the installed vertically spaced from each other at an angle blades with the cover made in the form of the conical umbrella. At that the blades are rigidly fixed to the cover, and the cover is fixed to the pipe. At that the cover serves as the bottom for the package made out of three coaxially mounted on it cylinders, which diameters (d₁, d₂,_{d3) are in the ratio with the body diameter (D) as d1:d2:d3:D = (0.62-0.64) : (0.49-0.51 : (0.30-0.32): 1. At that the central cylinder consists of two placed one into other pipes(internal and external pipes) with the possibility of their vertical relocation independently from each other, and the outer cylinder is supplied through the conical reducer with the branch pipe with the cover, which is fitted on the hollow rod, which lower end is fixed to the internal pipe of the central cylinder, and with the upper end fixed to the control wheel of the movement of the cover, the internal pipe and the middle cylinder. The external pipe of the central cylinder is fixed to the traction passing through the hollow coupling rod to the control wheel of the motion of the external pipe and the middle cylinder. The technical result of the invention is the increased efficiency of separation of the polydispersed silicon, simplification of the control and adjusting system, production of the target product of the required granulometric composition using one and the same separator.}

EFFECT: the invention ensures the increased efficiency of separation of the polydispersed silicon, simplification of the control and adjusting system, production of the target product of the required granulometric composition using one and the same separator.

3 cl, 1 dwg