If the ordinary filtrator has been applied for certain period of time,the solid impuity will be remained on the filtering element.It will cause the pressure and the filtering resistance to be higher.

• 在一般的过滤装置中，随着过滤过程的继续，液体内的固相杂质截留在过滤元件表面，引起压力降增加，过滤阻力增大，过滤效率下降。