Experimental research into uniformity in spreading mineral fertilizers with fertilizer spreader disc with tilted axis
Laen...
Kuupäev
2021
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Improving the efficiency in the work process of mineral fertilizer dressing is a topical
problem in today’s agricultural industry. The authors have developed a design of the fertilizer
spreading tool with a tilted axis and carried out field experiment investigations on it. It has been
established by the results of the investigations that the non-uniformity in the spreading of mineral
fertilizers along the line of their departure from the fertilizer spreading tool with a tilted axis is
most strongly affected by the disc rotation frequency. The obtained results provide for selecting
the optimum parameters and modes of operation for the tool under consideration in the situation,
when it is installed in fertilizer placing machines. Also, it has been established that increasing the
spreading disc rotation frequency in such a tool from 600 to 800 rpm results in the growth of the
effective range of mineral fertilizer spreading along the placing line at a level of 10.5 m.
Increasing the disc’s angle of inclination to the horizontal plane to 20º results in the rise of the
effective fertilizer spreading range at a level of the 48th tray (24 m) inclusive as well as the
increase of the distance between the tool and the tray that contains the maximum share of the
spread fertilizers (5.1%) to 24 trays (12 m). At a constant rotation frequency of the disc in the
tilted-axis fertilizer spreading tool, in all its kinematic modes of operation, an increase in the
angle of its disc’s inclination to the horizontal plane results in the rise of the indices representing
the distribution of the mineral fertilizers over the trays along the line of their placing. The width
of the mineral fertilizer spreading can be controlled by adjusting the rotation frequency of the
disc in the tilted-axis fertilizer spreading tool, when it is set at an angle to the horizontal plane,
similar to how it is done in state-of-the-art fertilizer placing machines with horizontally positioned
discs in their centrifugal spreading tools. The rotation frequency of the disc in the tilted-axis
fertilizer spreading tool has the most significant effect on the coefficient of variation incidental
to the distribution of the mineral fertilizers along the line of their placing.
Kirjeldus
Received: February 2nd, 2021 ; Accepted: March 27th, 2021 ; Published: April 7th, 2021 ; Correspondence: jyri.olt@emu.ee
Märksõnad
disc, inclination, mineral fertilizer, uniformity, spreading tool, articles