An ƙera mai tara ƙuran guguwar don tsaftace iskar gas ko ruwa daga ɓangarorin da aka dakatar.Ka'idar tsaftacewa ba ta da ƙarfi (ta amfani da ƙarfin centrifugal) da gravitational.Masu tara ƙurar guguwar guguwar sun kasance mafi girman rukuni a tsakanin kowane nau'in kayan tattara ƙura kuma ana amfani da su a duk masana'antu.
Mai tara kurar guguwar ta ƙunshi bututun ci, bututun shaye-shaye, silinda, mazugi da kuma hopper ash.
Ka'idar guguwar iska mai saurin gudu ita ce kamar haka: ana shigar da rafi na iskar gas mai ƙura a cikin na'urar ta bututun shigar da tangentially a cikin babba.An samar da kwararar iskar gas mai jujjuyawar a cikin na'urar, wanda aka karkata zuwa ƙasa zuwa ɓangaren juzu'i na na'urar.Saboda ƙarfin inertial (ƙarfin centrifugal), ana fitar da ƙwayoyin ƙura daga rafi kuma su zauna a kan bangon kayan aikin, sa'an nan kuma an kama su ta hanyar rafi na biyu kuma su shiga cikin ƙananan ɓangaren, ta hanyar fita zuwa cikin kwandon ƙura.Rafin iskar gas mara ƙura sannan yana motsawa sama da fita daga cikin guguwar ta bututun shaye-shaye na coaxial.
Ana haɗa ta da iskar murfin ƙarshen busar da bututun, kuma shine na'urar cire ƙura ta farko don iskar gas mai zafi a cikin na'urar bushewa.Akwai nau'ikan tsari iri-iri kamar guguwa guda ɗaya da rukunin guguwa biyu za'a iya zaɓar.