羅茨泵的工作原理與羅茨鼓風(fēng)機(jī)相似。由于轉(zhuǎn)子的不斷旋轉(zhuǎn)，被抽氣體從進(jìn)氣口吸入到轉(zhuǎn)子與泵殼之間的空間內(nèi)，再經(jīng)排氣口排出。

由于吸氣后，空間是全封閉狀態(tài)，所以，在泵內(nèi)氣體沒有壓縮和膨脹。但當(dāng)轉(zhuǎn)子頂部轉(zhuǎn)過排氣口邊緣，空間與排氣側(cè)相通時(shí)，由于排氣側(cè)氣體壓強(qiáng)較高，則有一部分氣體返沖到空間中去，使氣體壓強(qiáng)突然增高。當(dāng)轉(zhuǎn)子繼續(xù)轉(zhuǎn)動(dòng)時(shí)，氣體排出泵外！

萊寶RUVAC羅茨泵RUVAC WA 251,RUVAC WA 501,RUVAC WA 1001, RUVAC WA 2001,RUVAC WAU 251,RUVAC WAU 501, RUVAC WAU 501 H,RUVAC WAU 1001, RUVAC WAU 1001 H,RUVAC WAU 2001,RUVAC WAU 2001 H,RUVAC WS 251,RUVAC WS 501,RUVAC WS 1001,RUVAC WS 2001,RUVAC WSU 251,RUVAC WSU500,RUVAC WSU 501,Ruvac WSU501H,RUVAC WSU 1001,RUVAC WSU 2001,WSU2001-H, RUVAC WH 700,RUVAC WH 2500,RUVAC WH 4400,RUVAC WH 7000,RUVAC WHU 2500,RUVAC WHU 4400,RUVAC WHU 7000,RUVAC RA 3001,RUVAC RA 5001,RUVAC RA 7001, RUVAC RA 9001,RUVAC RA 13000,RUVAC WA 151,RUVAC WAU 151,RUVAC WS 151,RUVAC WSU 151,RUVAC WS500,WAU 1000H,Ruvac WS250,WA 1000