Nruas pulper yog cov khoom siv hluav taws xob muaj txiaj ntsig zoo, uas yog tsim los ntawm cov khoom noj hopper, rotating nruas, screen nruas, kis mechanism, hauv paus thiab platform, dej tsuag yeeb nkab thiab lwm yam. Lub nruas pulper muaj thaj chaw pulping thiab thaj chaw tshuaj ntsuam, uas tuaj yeem ua tiav ob txheej txheem ntawm pulping thiab tshuaj ntsuam ib zaug. Cov ntawv pov tseg raug xa mus rau qhov sib xws ntawm qhov sib luag ntawm cov khoom siv los ntawm cov khoom siv, ntawm qhov concentration ntawm 14% ~ 22%, nws tau rov qab khaws thiab nqis mus rau qhov siab ntawm cov scraper ntawm sab hauv phab ntsa nrog kev sib hloov ntawm lub nruas, thiab collides nrog lub hard puab phab ntsa nto ntawm lub nruas. Vim qhov me me thiab zoo shear quab yuam thiab txhim kho kev sib txhuam ntawm fibers, cov ntawv pov tseg tau muab cais ua fibers.