SU132902A1 - Air separator - Google Patents

Description

Pneumatic separators are known that use a vertical air jet from a fan to separate the grain mixture only into grain and chaff. However, these separators do not sequentially capture suspended particles from vertical airflow, depending on their aerodynamic properties.

The proposed separator does not have this disadvantage.

A distinctive feature of the proposed separator is that sedimentary chambers are mounted on the internal surface of the cone-shaped separation chamber, made in the form of annular trays, from which the outflow of grain comes from s multisection sluice gate using scrapers attached to the rotating tube; the pipe. The latter feeds the cereal mixture to a conical sieve, which is blown by an air jet from the fan.

The drawing shows schematically the separator i; general form.

Grain (oilseeds) are fed into the funnel of the rotating pipe 1 pipe from which it flows by gravity to the conical sieve 2 installed between the blowing chamber 3 and the separating chamber 4. The fan 5 pumps air into the blowing chamber 3, from where through the conical aerating screen 2 air enters the separation chamber 4. Under the influence of the air flow, the grain material R of the fluidized bed moves along the forming surface of the conical sieve, while the heavy fraction (for example, a normal grain) enters the annular tray, and The lighter fractions (shriveled grain, bito,; grain, impurities, dust) are carried by the air stream into the separation chamber. In each subsequent annular sedimentary chamber, particles with a lower soar velocity fall out.

The number of ring trays, therefore, depends on the number of material fractions to be separated.

The material deposited in the annular trays is continuously scooped up by scrapers 6 to the unloading windows 7, from where the pipes go by gravity through the pipes