利用給礦高差產生的壓力使礦漿從給礦管以切線方向進入機內，通過強壓穩流環，迫使礦漿作旋轉運動，產生較強的旋轉流，離心力、摩擦阻力。當旋轉流往下運動到底盤時，金粒首先進入底盤的漸開線和螺旋線溝槽內，隨著旋轉礦漿的帶動，金粒和重礦物沿溝槽底端中心流動，聚集在底端平面上并從精礦管排出。尾礦在軸向力的作用下從溢流管排出腔外。該設備對礦漿濃度及給礦壓力變化適應性強，不需動力，與其他設備比較對細粒金分選效果好。

The pulp delivered form feed pipeline flows into the sweepwasher in the direction of tangent line via the pressure pro-duced by difference in height of feed pulp level.The pulp is forced to do rotary motion via barretter with strong pressure.The motion produces strong rotary flow,centrifugal force and frictional force.When the rotary flow moves downward to the bottom disk,gold grain will firstly enter into the ditch of involute and helix on the bottom disk.Gold grain and heavy minerals will flow along the bottom center of ditch with the motion of spiral pulp.They will be concentrated on the flat surface of the bottom and be discharged by concentrate pipeline.The tailings sand will be discharged by overflow pipeline under the action of axial force.The equipment has good adaptability to the change of pulp concentration and feed pressure.Power is unde-sirable in the equipment.Compared with other equipment,the equipment has good beneficiation effect on fine-grain gold.

注：機器采用內襯耐納特橡膠或玻璃鋼、聚氨脂制造，耐磨防腐。

Remark:The equipment is manufactured by using LINATEX rubber or glass fiber reinforced plastics as interna lining with the properties of anti-friction and anti-corrosion.