JUSTIFICATION OF AN OPTIMUM OPERATING MODE OF A PNEUMATIC GRAVITY TABLE SEPARATOR WITH A PRODUCTIVITY OF 9 TONS PER HOUR
During operation of a gravity table separator it is necessary to consider a set of the interconnected technological parameters, each of which has an optimum value providing high overall performance of this machine. Optimum parameters of an operating mode of a gravity table separator with a productiv...
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| Format: | Article |
| Language: | Russian |
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Federal Scientific Agroengineering Centre VIM
2016-02-01
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| Series: | Сельскохозяйственные машины и технологии |
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| Online Access: | https://www.vimsmit.com/jour/article/view/114 |
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| author | I. A. Pekhal’Skiy E. V. Zhalnin R. M. Nurbagandova |
| author_facet | I. A. Pekhal’Skiy E. V. Zhalnin R. M. Nurbagandova |
| author_sort | I. A. Pekhal’Skiy |
| collection | DOAJ |
| description | During operation of a gravity table separator it is necessary to consider a set of the interconnected technological parameters, each of which has an optimum value providing high overall performance of this machine. Optimum parameters of an operating mode of a gravity table separator with a productivity of 9 tons per hour were proved. The pitch and cross tilt angles of a screen deck, speed of an air stream, amplitude and frequency of fluctuations of a screen deck were defined. It was experimentally established that the pitch has optimum value of 7-10 degrees, tilt - 7-8 degrees. While meeting these parameters maximum efficiency of cleaning of the processed material was received. A size of a cross tilt angle of a screen deck influences thickness of a processed material layer on its working surface. So, at angles 7 and 4 degrees layer thickness respectively makes 40 and 60 mm in a middle part of a screen deck at the optimum kinematic mode. Excess of this indicator with respect to optimum size (30-40 mm) reduces overall performance of a gravity table separator. It was established that at the small aerodynamic resistance of underlying surface of screen deck (4 Pas) the changes of thickness of a layer on a screen deck surface significantly influence distribution of an air stream. For example, the coefficient an air stream speed variation on a screen deck with grain makes 42 percent, without grain - 17. At increase in aerodynamic resistance of screen deck underlying surface (700 Pas) the variation coefficient of an air stream on a screen deck with grain makes 6 percent, without grain - 19. Revealed that the increase in aerodynamic resistance of screen deck underlying surface reduces dependence of distribution of an air stream on thickness of a layer of the processed material. The sequence of setting of operating mode parameters of a gravity table separator providing high efficiency of seeds cleaning was stated. |
| format | Article |
| id | doaj-art-13b8f3bd5d23486e9df3d331bbd4db3f |
| institution | Kabale University |
| issn | 2073-7599 |
| language | Russian |
| publishDate | 2016-02-01 |
| publisher | Federal Scientific Agroengineering Centre VIM |
| record_format | Article |
| series | Сельскохозяйственные машины и технологии |
| spelling | doaj-art-13b8f3bd5d23486e9df3d331bbd4db3f2025-08-20T03:56:27ZrusFederal Scientific Agroengineering Centre VIMСельскохозяйственные машины и технологии2073-75992016-02-01012226113JUSTIFICATION OF AN OPTIMUM OPERATING MODE OF A PNEUMATIC GRAVITY TABLE SEPARATOR WITH A PRODUCTIVITY OF 9 TONS PER HOURI. A. Pekhal’Skiy0E. V. Zhalnin1R. M. Nurbagandova2All-Russia Research Institute of Mechanization for AgricultureAll-Russia Research Institute of Mechanization for AgricultureAll-Russia Research Institute of Mechanization for AgricultureDuring operation of a gravity table separator it is necessary to consider a set of the interconnected technological parameters, each of which has an optimum value providing high overall performance of this machine. Optimum parameters of an operating mode of a gravity table separator with a productivity of 9 tons per hour were proved. The pitch and cross tilt angles of a screen deck, speed of an air stream, amplitude and frequency of fluctuations of a screen deck were defined. It was experimentally established that the pitch has optimum value of 7-10 degrees, tilt - 7-8 degrees. While meeting these parameters maximum efficiency of cleaning of the processed material was received. A size of a cross tilt angle of a screen deck influences thickness of a processed material layer on its working surface. So, at angles 7 and 4 degrees layer thickness respectively makes 40 and 60 mm in a middle part of a screen deck at the optimum kinematic mode. Excess of this indicator with respect to optimum size (30-40 mm) reduces overall performance of a gravity table separator. It was established that at the small aerodynamic resistance of underlying surface of screen deck (4 Pas) the changes of thickness of a layer on a screen deck surface significantly influence distribution of an air stream. For example, the coefficient an air stream speed variation on a screen deck with grain makes 42 percent, without grain - 17. At increase in aerodynamic resistance of screen deck underlying surface (700 Pas) the variation coefficient of an air stream on a screen deck with grain makes 6 percent, without grain - 19. Revealed that the increase in aerodynamic resistance of screen deck underlying surface reduces dependence of distribution of an air stream on thickness of a layer of the processed material. The sequence of setting of operating mode parameters of a gravity table separator providing high efficiency of seeds cleaning was stated.https://www.vimsmit.com/jour/article/view/114очистка семянпневматический сортировальный столдекаполнота выделения примесипроизводительностьseeds cleaninggravity table separatorscreen deckdegree of separationproductivity |
| spellingShingle | I. A. Pekhal’Skiy E. V. Zhalnin R. M. Nurbagandova JUSTIFICATION OF AN OPTIMUM OPERATING MODE OF A PNEUMATIC GRAVITY TABLE SEPARATOR WITH A PRODUCTIVITY OF 9 TONS PER HOUR Сельскохозяйственные машины и технологии очистка семян пневматический сортировальный стол дека полнота выделения примеси производительность seeds cleaning gravity table separator screen deck degree of separation productivity |
| title | JUSTIFICATION OF AN OPTIMUM OPERATING MODE OF A PNEUMATIC GRAVITY TABLE SEPARATOR WITH A PRODUCTIVITY OF 9 TONS PER HOUR |
| title_full | JUSTIFICATION OF AN OPTIMUM OPERATING MODE OF A PNEUMATIC GRAVITY TABLE SEPARATOR WITH A PRODUCTIVITY OF 9 TONS PER HOUR |
| title_fullStr | JUSTIFICATION OF AN OPTIMUM OPERATING MODE OF A PNEUMATIC GRAVITY TABLE SEPARATOR WITH A PRODUCTIVITY OF 9 TONS PER HOUR |
| title_full_unstemmed | JUSTIFICATION OF AN OPTIMUM OPERATING MODE OF A PNEUMATIC GRAVITY TABLE SEPARATOR WITH A PRODUCTIVITY OF 9 TONS PER HOUR |
| title_short | JUSTIFICATION OF AN OPTIMUM OPERATING MODE OF A PNEUMATIC GRAVITY TABLE SEPARATOR WITH A PRODUCTIVITY OF 9 TONS PER HOUR |
| title_sort | justification of an optimum operating mode of a pneumatic gravity table separator with a productivity of 9 tons per hour |
| topic | очистка семян пневматический сортировальный стол дека полнота выделения примеси производительность seeds cleaning gravity table separator screen deck degree of separation productivity |
| url | https://www.vimsmit.com/jour/article/view/114 |
| work_keys_str_mv | AT iapekhalskiy justificationofanoptimumoperatingmodeofapneumaticgravitytableseparatorwithaproductivityof9tonsperhour AT evzhalnin justificationofanoptimumoperatingmodeofapneumaticgravitytableseparatorwithaproductivityof9tonsperhour AT rmnurbagandova justificationofanoptimumoperatingmodeofapneumaticgravitytableseparatorwithaproductivityof9tonsperhour |