ОЦЕНКА КАЧЕСТВА ДОЗИРОВАНИЯ ПРИМЕСНОГО КОМПОНЕНТА ЛЕНТОЧНЫМ ПИТАТЕЛЕМ

Abstract

The necessity of separate supply of grain mixture components to the experimental trier in the study of the process of separating long impurities from wheat was established. It is proposed to use distribution boxes without a bottom with dimensions of 0.6×0.06×0.07 m and a screeder with adjustable gate reach to ensure uniform distribution of the impurity component. The structure of the total error in the dosing of the impurity component during the interval control of its flow has been established. The errors in counting time intervals and the reaction of the operator with measuring containers to the sound signal have the greatest weight. Relationships between the dosing quality indicators: the standard deviation (σ) and the coefficient of variation (ν) with the time interval for monitoring samples leaving the belt feeder with an impurity mass in the distribution box of 0.360 kg were established, while with a decrease in the time interval for monitoring samples (toot) ν increased . With a change in t from 25 to 5 s, ν of the sampled impurities increased by 5.25 times. Isolation of the two most significant errors by summing the masses of the impurity over repetitions eliminates the error of discrete dosing - the difference from equivalent distributed masses is 0.67 - 2.33%, which is quite acceptable for the continuous dosing of the impurity under study. with the mass of impurities in the distribution box mp = 0.725 kg. With an increase in mp by 2 times, the value of the coefficient of variation for the time interval for sampling samples tot = 5 s decreased by 1.94 times.