Studies on the Distribution of Particles through Distributing Pipe

Abstract

In order to distribute particles uniformly, we made distributing pipe for trial with a rectangua section and 16 orifices for sending air, on the upper surface of the pipe.
Experiments were carried out on the coefticient of loss of the head due to branch and confluence of air stream in the pipe. After transporting the particles into the pipe, we obtained the successful distributing particles.
The results are summarized as follows:
(1) When an air sending orifice was situated 10mm apart from counterside of the distributing hole, the maximum amount of distributed particles was attained.
(2) In the case of branch and confluence of air were coincide, the amount of branched air was slways slightly more than that of confluencing air. The coefficient of branch-confluence was changed according to the ratio of air flow, varying from 0.08 to 1.0.
(3) By sending the air from air sending orifices, pressure head increased and velocity head decreased. Whereas, head differences between pipe ends lessened as compared with the case of pipeduster.
(4) Uniform distribution of particles can be attained by controlling the amount of sending air in correspondance with the position of the distributing pipe.