Drum pulper bụ ngwá ọrụ na-ekpo ọkụ na-ekpo ọkụ na-arụ ọrụ nke ọma, nke a na-ejikarị eme ihe bụ hopper feed, drum rotting, drum screen, usoro nnyefe, isi na ikpo okwu, mmiri na-agba mmiri na ihe ndị ọzọ. Igwe mmiri na-ekpo ọkụ nwere ebe a na-atụgharị na ebe a na-enyocha, nke nwere ike mezue usoro abụọ nke pulping na nyocha n'otu oge. A na-eziga akwụkwọ mkpofu ahụ na mpaghara pulping dị elu site na onye na-ebufe ya, na ntinye nke 14% ~ 22%, a na-ebuli ya ugboro ugboro wee tụba ya n'ogo ụfọdụ site na scraper na mgbidi dị n'ime na ntụgharị nke drum, na na-adaba n'elu mgbidi dị n'ime siri ike nke drum. N'ihi ike dị nro ma dị irè yana nkwalite esemokwu n'etiti eriri, a na-ekewa akwụkwọ mkpofu n'ime eriri.