J.of Soc of Agri Struc, Japan.
Vol.13,No.2 July 1983,15-20
Original:
Language: Japanese

    In order to find whether a vibratory air-slide mechanism is applicable as a so called process conveyor, the authors constructed the small sized apparatus.
    The grain particles on the trough were pseudo-fluidized and transported by means of aeration and vibration.
    Materials tested were paddy and brown rice, and flow properties obtained were as follows :
(1) The grain particles of paddy and brown rice were made pseudo-fluidized and transported on the trough at an apparent air velocity u_a, in less than a half the minimum fluidization velocity u_mf under the conditions of vibration intensity factor Kv= 1.5 - 3.0 and trough angle theta= 0 - 6 degree.
(2) Grain rate G'_s (t/h) gradually increased as an increase of Kv or theta, and approached a constant value under the condition of Kv >= 2.5 and theata >= 4 degree.
(3) Assumed only a gravity get the fluidized bed slipped down on the trough, the velocity at any position on the trough would be shown as

U_s = root( 2 gl [sintheata - μ_dis (costheata + (h/b) sectheata) ] )

    The experimental data calculated by the above equation shows the following relation,

μ_dis = ktheata

where k is constant and 0.799 for paddy and 0.870 for brown rice.

HomePage