The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The paper presents the results of the study into the recovery of useful impurities released to the waste material during the process of cleaning rape seeds with the application of air jet and sieves. The best effects were obtained with cleaning the waste material in an aspiration duct at the velocity of air jet of 2.0 m/s and then sieving it with round holes of 1.3 mm in diameter. It was found that...
The paper presents the results of preliminary studies on the effect of the inclination angle of a divider board and the linear velocity of a special belt on the separation of rape seeds from field bedstraw seeds. A mathematical formula determining the influence of the belt static load on the separation efficiency is also given. The range of the working parameters of a divider was determined as well:...
The paper presents a conception of a device for photoelectric separation of grain mixtures. The studies were inspired by an analysis of relevant literature which emphasizes problems with separation of certain impurities from grain mixtures. Three conceptions of such a device are discussed in the paper. The solution chosen guarantess high efficiency of dockage separation, reliability and good performance,...
The paper presents a theoretical analysis of the possibility of obtaining better capacity of a trieur by increasing the angular velocity of a cylinder and maintaining high quality of the cleaning process. Putting a trieur cylinder in additional rotary motion (which means that it rotates around its own axis and the vertical axis of the device) should enable the achievement of higher load intensity,...
The aim of this paper was to evaluate the possible utilisation of the string sieve for rape seed sorting. The experiment results of the influence of sieve inclination angle, seed feeding and the length of the sieve strings on the sorting efficiency was presented in the paper. The experiments found a significant effect of the analysed factors. A mathematical formula describing the correlation between...
Results of laboratory tests on the effect of rotational speed, load volume, angle of the working edge of the trough and percentage composition of a separated mixture on the distribution of fractions in the trough are presented.Mixture was separated on a working element in the shape of a truncated cone narrower or broader at the outlet.
The paper presents the results of tests on the effect of moisture, percentage of impurities in a seed mixture and loading capacity of a silo on the outsorting of rape seeds in stock.The experiment was conducted with a laboratory cylindrical silo designet and manufactured at the Institute of Agricultural Machinery and Equipment.The results show a considerable effect of some factors on the process of...
The aim of the paper was to determine the string sieve for cleaning rape seed mixture. The paper presents the results of the research concerning influance of the inclination angle and surface loading of the sieve, and the dockage content of a mixture, on the quality of the cleaning process. The experiments conducted show that the angle of inclination and surface loading of the sieve have a significant...
A theoretical analysis was made of the possibility of seed mixture separation on a stationary conical surface, making use of air stream. A system of equations describing the motion of sliding and rolling seeds on the inner surface of a cone whose vertex points downwards was formulated.The research showed that the range of motion trajectories of seeds depended on their shape, the velocity of air stream...
The effect of rotational speed, load volume and composition of seed mixture on the filling factor was investigated. Truncated cones, narrower and broader at the outlet, were used as separation surfaces. The results were elaborated statistically and presented in graphs.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.