It adopts quick disassembling handle at the upper part of this machine.The handle connects the machine as the all and the one its upper coveris seal fully. Therefore it prevents from the dust flying caused byvibration during the period of sieving. The vibration motor is installedunder the sieve. Meanwhile it adapts spring to reduce vibration. So themachine will operate at stable state. The stand is adjustable, so theinclined angel of sieve that is sieving can be adjusted. The best sieving effect can be get.