Abstract

The pneumatic system with a vertical annular aspiration channel for vibration-centered grain separators been developed. The rational values of the disk grain distributor are the length of the sectors 0.15 m, the angle of inclination of the sectors 60°. The rotation speed of the distributor in the seed mode (grain supply 5…15 t/h) should be 100…200 min-1 and in the food mode (grain supply 15…25 t/h) must be 100…150 min-1. The effect of the release of light impurities in the developed aspiration system decreases from 45% to 20% with an increase in the supply of grain G from 5 to 25 t/h, herewith at the same time the loss of a full-fledged grain to waste decreases from 0.6...0.8% to 0.3...0.4%, while the effect of the release of light impurities in the aspiration system of the mass-produced vibration centrifugal grain separator decreases from 11% to 4% with the same losses of grain to waste.

Highlights

  • Larger agricultural enterprises have higher grain yields [1]

  • Centrifugal separators have higher values of specific productivity in which the exit of particles through the separating surface of the sieves occurs under the action of inertial forces far exceeding gravity [3]

  • For example the A1-BCS-100 vibrating grain separator [8] is designed to isolate impurities from grain material that differ in thickness, width and aerodynamic properties

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Summary

Introduction

Larger agricultural enterprises have higher grain yields [1]. the use of highly efficient and capacity machines for seed and grain cleaning is important. For example the A1-BCS-100 vibrating grain separator [8] is designed to isolate impurities from grain material that differ in thickness, width and aerodynamic properties (figure 1). Each block consists of a housing 6, an annular aspiration channel 3, a rotating rotor with a sieve drum of three separate cylindrical sieves 5, 9, 10 and sieves cleaning devices 7, 13. The puny and part of the crushed grain passes through the holes of the sieve 9, the cleaned material with large impurities moves to the sieve 10, where the clean grain passes through the holes and is removed from the machine, and large impurities go down along the lower sieve 10 Too the device for feeding grain material into the annular aspiration channel has not been sufficiently studied

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