Seed from harvesting machines or hand collections will include a mix of stems, leaves, chaff, appendages, empty glumes, and seeds of various sizes and quality.  The extraneous materials must be removed to insure a quality product and to allow uniform dispensing through seeding equipment. 

Application of Pre-Cleaning Equipment
Pre-cleaning is the rapid removal of excessive, extraneous materials by pre-cleaner, which is used to remove large trash, stems, leaves, and associated chaff prior to basic cleaning. 


Working Principle of  Pre-Cleaning Equipment
1.  Grain flows into dedusting bin from silo by a bucket elevator;
2.  A fan sucks out the relatively light sundries like dust, stive, rice chaff and bran;
3.  Then grain flows onto a flat screen that is set at a slight incline and vibrated mechanically;
4.  Large trash is removed as the seed fall through the holes in the first screen and onto a second screen;
5.  The second screen traps the seeds and moves them to a hopper as smaller trash falls through the holes and discharged from another hopper.

DZL-10  Pre-Cleaning Equipment Parameters:

Model	Dimension	Fan power and rotate speed	Motor Power	Capacity
DZL-10	3100*1450*2750mm	1.5kw/2900round/minute	1.5-4grade	10T/hour

DZL-15  Pre-Cleaning Equipment Parameters:

Model	Dimension	Fan power and rotate speed	Motor Power	Capacity
DZL-15	3040*1120*2300mm	1.5kw/2900round/minute	1.5-6grade	15-20T/h