Tang Chuzhou

Optimization Analysis on Parameters of Cleaning Sieve of Rape Combine of

Against the phenomenon of high impurity rate and cane and pod shell are difficult to discharge at the end of the sieve for rape combine of Bi Lang 4LZ(Y)-1.0. This study take cleaning sieve of rape combine of Bi Lang 4LZ(Y)-1.0 as study object, analyzed the movement of materials on sieve, established the virtual prototype model of the cleaning sieve of this rape combine, taken materials and cleaning sieve all at the best motion state as constraint conditions and optimized the structure and kinematics parameters of the cleaning sieve by utilizing ADAMS software. Optimization results shown that when angle θ between sieve surface and level is 9°, vibration angle e is 28°, crank radius R is 12 mm, crank angular velocity ω is 32 rad/sec, the cleaning sieve has the best transmission performance and meet the requirements of the best state of motion (the cane and pod shell always maintain the upward trend and rapeseed could upward and downward). The conclusion could provide a theoretical basis for improving and optimization design for rape combine.

Experimental study of secondary air inlet system in multifunction heating stove type CNCM-2.5Y

Multifunction heating stove type CNCM-2.5Y was tested by the industrial thermal test to investigate the heat loss in exhaust gas with the change ratio of secondary to primary air when the air speed was 0.5 m/s and to examine the emission of the components including CO,CO2,NOx,SO2 in flue gas.The results showed the ratio of secondary to primary air significantly influenced the temperature of the exhaust gas and the content of the components.When the primary air injection remains unchanged,the temperature of the exhaust gas and CO,NOx and SO2 emissions decreased with the increase of secondary air intake.It was found that the heat loss of exhaust gas was 8.5%,and the emission for CO was 1 055 mg/m3,for NOx was 52.0 mg/m3,for SO2 was 96.0 mg/m3 and for CO2 was 8.2% when the ratio of secondary to primary air is precise controlled to be 20%,which is the best secondary air intake in all tested conditions with low heat loss in exhaust gas and low emission of pollutants.