About the article
А.L. YABLONEV, Dr. Sc., D.M. SCHERBAKOVA
The extraction of milled peat by the pneumatic harvesting complex of machines has a number of advantages in contrast to the mechanical method. These advantages are as follows: the milling of wet peat deposits during harvesting is excluded, the range of required equi-pment is reduced, and the cycle time is shortened from two to one day. The latter is especially important, since two-day periods with good sunny weather in the production season are much less than one-day ones. Therefore, in general, the reliability of the method with pneumatic peat harvesting is higher. To evaluate the efficiency of the modern KTT-2 pneumatic harvesting machine, a field experiment was conducted to evaluate the suction speed of the nozzle of the machine. The results of the study made it possible to build the velocity field of the suction torch and determine the maximum suction speed – 26.74 m/s. The minimum air flow velocity in the studied zone is 0.3 m/s and is observed at a distance of 0.5 m from the nozzle. An analysis of the velocity field of the suction torch revealed the dependence of the air flow velocity on the distance from the nozzle. The size of the active zone of the suction plume has been identified and ways to optimize its size have been proposed.
peat, weather conditions, pneumatic harvesting machine, suction torch, nozzle, active zone, fractional composition, anemometer