RESEARCH OF GRAVITY SEPARATOR OF RAPESEE

Abstract

Rapeseed contains up to 40…49% oil, 21…33% protein, 6…7% fiber. Rapeseed oil is used in the production of fats and margarine, as well as in the metallurgical, paint, soap, textile industries. Insufficient study of the process of purification of rapeseed seeds constrains its prevalence in Ukraine. Recently, the purification of rapeseed from difficult-to-separate weeds and impurities is carried out by hitting the reflective surface using the elastic properties of the seeds. The cleaning machines used a single blow and have a low separation quality. The construction of the gravitational multilevel separator of rapeseed is considered in the work and its parameters with the possibility of repeated blows of heap particles with reflective surfaces are substantiated. Based on the analysis of experimental studies of the elastic characteristics of rapeseed and impurities, the rational height of the fall of the seed heap, which is in the range of 0,2…0,4 m, was determined. Theoretical calculations allowed to determine the flight lengths of particles with repeated rebounds from the impact surface and made it possible to justify the dimensions of the impact deck in the transverse direction 0,2 m and – 1,5 m in the longitudinal. As a result of the production tests it was found that the most acceptable initial speed is Vo = 2 m/s, and the angle of inclination of the deck α = 300 . The production conditions of the separator proved that when the rapeseed seed heap is clogged up to 15%, the yield of the purified fraction is 68% of the seeds of the first class.