Complex Effects of Drum Hub Forms and Structural Parameters on Coal Loading Performance

Table 4

The difference between conveying flow rate and cutting rate of drums with different rotational speeds.

n (rpm)	Qt (m^3/min)	1.371
	Drum	I	II	III	IV	V	VI	VII	VIII
40	Qz (m^3/min)	1.911	1.675	1.402	1.085	0.715	1.319	1.368	1.652
	Qz − Qt (m^3/min)	0.540	0.304	0.031	−0.286	−0.656	−0.052	−0.003	0.281
60	Qz (m^3/min)	2.867	2.513	2.103	1.628	1.073	1.979	2.052	2.478
	Qz − Qt (m^3/min)	1.496	1.142	0.732	0.257	−0.298	0.608	0.681	1.107
80	Qz (m^3/min)	3.822	3.350	2.804	2.170	1.430	2.638	2.736	3.304
	Qz − Qt (m^3/min)	2.451	1.979	1.433	0.799	0.059	1.267	1.365	1.933
100	Qz (m^3/min)	4.778	4.188	3.505	2.713	1.788	3.298	3.420	4.130
	Qz − Qt (m^3/min)	3.407	2.747	2.134	1.342	0.417	1.919	2.049	2.759