Mechanism of Discharge Pulsation of Particles
Feeder and New Method of Restraining Pulsation
Wang Shunsen1,2, Mao Jingru1,2, Liu Guanwei1,2
(1.School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2.State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University,
Xi'an 710049, China)
Abstract: To solve the problem of the discharge pulsation of solid particles feeder,
dynamic measuring and testing technique were applied to measure the main parameters of the
screw feeder, and the basic laws of discharge were obtained. The result shows that
discharge factor increases with the increase of the rotational speed of screw. In
addition, the smaller thread pitch is, the larger an impact of the rotational speed is on
the discharge factor. It is found that the main origin of pulsation is the periodic change
of discharge gate width by the analysis on the dynamic quantitative relation of discharge
pulsation. Based on the principle of complementary pulsation to restrain pulsation, a kind
of new method to restrain pulsation was proposed and a kind of new¡Mtype double screw
feeder was developed, which was proved to be feasible and valid by experiments.
Keywords: solid particle; dynamic measuring and testing technique; screw feeder; flow
pulsation; design of feeder