Rapeseed separation

Abstract

The issues of purification of rapeseed from heavy weeded seeds have been considered. It has been established that general purpose pneumatic separator separators, which are generally used to cleanse rapeseed seeds, remove significant amounts of weed, mineral and organic impurities, but completely remove heavyseparate seeds such as weeds such as mice, chicken millet, the submarine is fragile and the others fail. It is suggested to cleanse rapeseed from heavy impregnated impurities by throwing it into the air with a mixture of rotating particles, thus using, in addition to the aerodynamic properties during the separation, the gyrating effect and the Magnus effect.
The initial flight velocity of the particles of the mixture, the angular and circumferential velocities at which the separation process at the gyratory separator is possible are calculated.
The purpose of the article is to determine the basic structural-kinematic parameters of the process of separation of rapeseed on a gyratory separator with rolls located one above the other, in which the lower roll rotates at a speed greater than the upper, namely angular and  circumferential speeds of the rolls, the initial speed of departure of seeds, exit and the energy intensity of the separation process.

Thus, the studies made it possible to determine the structural-kinematic parameters of the process of separation of rapeseed on a gyratory separator. These parameters are: the initial velocity of the particles after passing through the rollers 3.3 m/s, the angular velocity 1650 1/s, and the circumferential velocity of 1.65 m/s. Experimental studies have established that up to 91.1 % of rapeseed can be separated from the mixture by up to 2 % at the initial 6.6 %, in one pass, ie to obtain conditioned seeds at a productivity of up to 100 kg/h for 0.2 m of roll length.