无油式真空泵是一种旋转式(shi)(shi)变容真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)须有(you)前级泵(beng)(beng)配合方可使用(yong)(yong)在(zai)较宽的压力范围内有(you)较大(da)的抽速(su)对(dui)被(bei)抽除气体中(zhong)含有(you)灰尘(chen)和水(shui)(shui)(shui)蒸汽不敏(min)感广泛用(yong)(yong)于冶金、化(hua)工、食品(pin)、电(dian)子镀膜(mo)等(deng)行业。主(zhu)要有(you)WLW系列(lie)立式(shi)(shi)无(wu)油真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)、W型(xing)(xing)往复式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)、2X,2XZ型(xing)(xing)旋片式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)、ZJ，ZJH型(xing)(xing)罗(luo)(luo)茨(ci)(ci)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)（ZJH型(xing)(xing)为专利产(chan)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)品(pin)）、2SK、SK型(xing)(xing)水(shui)(shui)(shui)环(huan)式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)、2BV、2BA型(xing)(xing)水(shui)(shui)(shui)环(huan)式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)、H、2H型(xing)(xing)滑(hua)阀真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)、TLZ型(xing)(xing)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)、SL型(xing)(xing)罗(luo)(luo)茨(ci)(ci)鼓风机(ji)(ji)、JZJHX型(xing)(xing)罗(luo)(luo)茨(ci)(ci)旋片真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)机(ji)(ji)组(zu)、JZJHS型(xing)(xing)罗(luo)(luo)茨(ci)(ci)水(shui)(shui)(shui)环(huan)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)机(ji)(ji)组(zu)、JZJHWLW型(xing)(xing)立式(shi)(shi)无(wu)油真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)机(ji)(ji)组(zu)、JZJP型(xing)(xing)罗(luo)(luo)茨(ci)(ci)水(shui)(shui)(shui)喷射真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)机(ji)(ji)组(zu)、JZJHBA型(xing)(xing)罗(luo)(luo)茨(ci)(ci)水(shui)(shui)(shui)环(huan)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)机(ji)(ji)组(zu)、RPP型(xing)(xing)水(shui)(shui)(shui)喷射真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)泵(beng)(beng)、JZJH2H型(xing)(xing)罗(luo)(luo)茨(ci)(ci)滑(hua)阀式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)机(ji)(ji)组(zu)等(deng)型(xing)(xing)号。　　

　　工作原理：　

　　1.首先应该充分(fen)了解被(bei)抽气(qi)体(ti)成分(fen)。如气(qi)体(ti)中含(han)不含(han)可(ke)凝蒸气(qi)、有(you)无颗粒灰尘、有(you)无腐蚀(shi)性(xing)(xing)、爆炸性(xing)(xing)等(deng)(deng)。如果(guo)气(qi)体(ti)中含(han)有(you)蒸气(qi)、颗粒、及腐蚀(shi)性(xing)(xing)气(qi)体(ti)，应该考虑(lv)在泵(beng)的(de)(de)进气(qi)口(kou)管路上安装辅助设(she)备，如冷(leng)凝器、除尘器等(deng)(deng)。如抽取气(qi)体(ti)还(hai)有(you)腐蚀(shi)性(xing)(xing)，则须选(xuan)用(yong)材质。若(ruo)抽取的(de)(de)气(qi)体(ti)具有(you)爆炸性(xing)(xing)，则应该选(xuan)择水(shui)环式(shi)(shi)真空(kong)泵(beng)并且配防爆电机，因为水(shui)环式(shi)(shi)真空(kong)泵(beng)整个工作过程是等(deng)(deng)温的(de)(de)。　　

　　2.真空设(she)备或者(zhe)零部件对油(you)(you)污(wu)染(ran)的要(yao)(yao)求(qiu)。若(ruo)设(she)备严格要(yao)(yao)求(qiu)无油(you)(you)时，应该(gai)选各种无油(you)(you)泵，如(ru)(ru)：水环式真空泵、分子(zi)筛吸(xi)附泵、溅(jian)射离子(zi)泵、低温泵等。若(ruo)要(yao)(yao)求(qiu)不(bu)严格，可以选择有油(you)(you)泵，并且加上(shang)一些(xie)防油(you)(you)污(wu)染(ran)措施，如(ru)(ru)加冷(leng)阱、障板、挡油(you)(you)阱等，也能达到清洁(jie)真空要(yao)(yao)求(qiu)。　　

　　3.真空泵排出来的油蒸气(qi)(qi)对环(huan)境的影响(xiang)如(ru)何。如(ru)果环(huan)境不允许有污(wu)染(ran)，可以(yi)选无油真空泵如(ru)水环(huan)式真空泵，或者把油蒸气(qi)(qi)排到室(shi)外(wai)。　　

　　4.如有(you)多台大型水环式真空(kong)泵同时工作，循环液应该进(jin)行冷却(que)，否(fou)则(ze)影(ying)响真空(kong)度。冷却(que)装置可以配备冷却(que)塔，同时须(xu)配增压泵对管路(lu)加(jia)压。　

　　5.真(zhen)(zhen)空(kong)(kong)泵的(de)工作压强应该满足真(zhen)(zhen)空(kong)(kong)设(she)备的(de)极限真(zhen)(zhen)空(kong)(kong)及工作压强要求。通常选(xuan)择真(zhen)(zhen)空(kong)(kong)泵泵的(de)真(zhen)(zhen)空(kong)(kong)度要高于(yu)真(zhen)(zhen)空(kong)(kong)设(she)备真(zhen)(zhen)空(kong)(kong)度半个(ge)到(dao)一(yi)个(ge)数量(liang)级(ji)。　

　　6.真空泵在其工作压强下，应能排走真空设备工艺过程(cheng)中产生的全(quan)部(bu)气(qi)体量。

它具有结构简单、操作(zuo)容易、维护方(fang)便(bian)、不(bu)会污染环境等优点。无油真(zhen)(zhen)空泵耐用(yong)性好，是(shi)抽(chou)真(zhen)(zhen)空，压缩，两用(yong)真(zhen)(zhen)空泵，是(shi)一种应用(yong)范围非常广泛获得真(zhen)(zhen)空的基本设(she)备。

无油真(zhen)空泵与(yu)油泵相(xiang)比真(zhen)空度低，抽(chou)气量小，但体积小巧，易(yi)于安装(zhuang)，维护(hu)简单(dan)，移动方(fang)便，不(bu)产生(sheng)油烟，不(bu)污染环境，尤其在(zai)要(yao)求较(jiao)高的实验(yan)室(shi)使用较(jiao)好。也(ye)是实验(yan)室(shi)最常备的设备之一。

因此在选购无油(you)真(zhen)(zhen)空(kong)(kong)(kong)泵时要(yao)(yao)先确(que)定要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)工作的(de)真(zhen)(zhen)空(kong)(kong)(kong)度(du)，如果需(xu)求(qiu)(qiu)(qiu)(qiu)的(de)真(zhen)(zhen)度(du)高，而选的(de)真(zhen)(zhen)空(kong)(kong)(kong)泵就(jiu)要(yao)(yao)高于需(xu)求(qiu)(qiu)(qiu)(qiu)的(de)真(zhen)(zhen)空(kong)(kong)(kong)度(du)，否则达不到(dao)抽(chou)真(zhen)(zhen)空(kong)(kong)(kong)的(de)要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)，就(jiu)会(hui)达不到(dao)工作要(yao)(yao)求(qiu)(qiu)(qiu)(qiu)。其(qi)次是无油(you)真(zhen)(zhen)空(kong)(kong)(kong)泵抽(chou)气速率(lv)，选型(xing)时就(jiu)要(yao)(yao)稍大于所需(xu)求(qiu)(qiu)(qiu)(qiu)的(de)抽(chou)气速率(lv)，这(zhei)样就(jiu)能更(geng)好的(de)满(man)足需(xu)要(yao)(yao)。最(zui)后看(kan)抽(chou)取(qu)的(de)气体有(you)无腐蚀性，有(you)腐蚀的(de)气体会(hui)腐蚀泵，必须要(yao)(yao)用特殊(shu)的(de)材质才能满(man)足需(xu)求(qiu)(qiu)(qiu)(qiu)。