The machine can screen waste paper pulp roughly or finely.The machine can be used in pulp making section or before head box section.The screen basket is hole type or slot type.It is a kind of new-type recycled paper pulp screen equipment, designed for promoting the up-flow structure aiming at the characteristic of the impurity in the recycled paper pulp.In the machine, the up-flow structure is applied, where pulp is enters from the bottom, and weight rejects are discharged from the bottom and light rejects are discharged from the top.It can apply to various kinds of coarse screen and precise screen of waste paper and also screen before paper machine net extensively.