Inflow pressure screen belongs to Screening System of paper machinery and is a more advanced Screening System. Inflow pressure screen is a more advanced Screening System in the world at present, and is used for fine screening equipment of the wood pulp, straw pulps and waste paper pulps, particularly is used for the pre-net screening equipment of paper-making machine. Features of Pressure Screen: 1. The rotor is rotated outside of the sieve drum, and the heavy impurities flow away from the sieve drum to avoid clogging the screen cut and prolong greatly the service life of sieve drum; 2. It has low pulse, high screening efficiency and reliable operation.