无油式真空泵是一种旋转式(shi)(shi)变容真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)须有前级泵(beng)(beng)(beng)(beng)配合(he)方(fang)可使用在较(jiao)宽的压力范围内有较(jiao)大的抽(chou)速对(dui)被抽(chou)除气体中(zhong)含有灰尘(chen)和水(shui)(shui)蒸汽不敏感广(guang)泛用于冶金、化工、食品、电子(zi)镀膜等(deng)行业。主要(yao)有WLW系(xi)列立式(shi)(shi)无油真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)、W型(xing)(xing)往复式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)、2X,2XZ型(xing)(xing)旋片(pian)式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)、ZJ，ZJH型(xing)(xing)罗(luo)(luo)(luo)(luo)茨真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)（ZJH型(xing)(xing)为专利产(chan)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)品）、2SK、SK型(xing)(xing)水(shui)(shui)环式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)、2BV、2BA型(xing)(xing)水(shui)(shui)环式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)、H、2H型(xing)(xing)滑阀真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)、TLZ型(xing)(xing)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)、SL型(xing)(xing)罗(luo)(luo)(luo)(luo)茨鼓风机、JZJHX型(xing)(xing)罗(luo)(luo)(luo)(luo)茨旋片(pian)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)机组、JZJHS型(xing)(xing)罗(luo)(luo)(luo)(luo)茨水(shui)(shui)环真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)机组、JZJHWLW型(xing)(xing)立式(shi)(shi)无油真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)机组、JZJP型(xing)(xing)罗(luo)(luo)(luo)(luo)茨水(shui)(shui)喷射真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)机组、JZJHBA型(xing)(xing)罗(luo)(luo)(luo)(luo)茨水(shui)(shui)环真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)机组、RPP型(xing)(xing)水(shui)(shui)喷射真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)(beng)、JZJH2H型(xing)(xing)罗(luo)(luo)(luo)(luo)茨滑阀式(shi)(shi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)机组等(deng)型(xing)(xing)号。　　

　　工作原理：　

　　1.首(shou)先应该(gai)充分(fen)了解(jie)被抽(chou)气(qi)(qi)体成分(fen)。如气(qi)(qi)体中含不(bu)含可凝蒸(zheng)(zheng)气(qi)(qi)、有(you)无颗(ke)粒灰尘(chen)、有(you)无腐(fu)(fu)蚀(shi)性、爆(bao)炸(zha)性等。如果气(qi)(qi)体中含有(you)蒸(zheng)(zheng)气(qi)(qi)、颗(ke)粒、及(ji)腐(fu)(fu)蚀(shi)性气(qi)(qi)体，应该(gai)考虑在泵的进气(qi)(qi)口管路上(shang)安装辅助设备，如冷(leng)凝器、除尘(chen)器等。如抽(chou)取气(qi)(qi)体还有(you)腐(fu)(fu)蚀(shi)性，则(ze)须选(xuan)(xuan)用材质。若抽(chou)取的气(qi)(qi)体具有(you)爆(bao)炸(zha)性，则(ze)应该(gai)选(xuan)(xuan)择水(shui)环式(shi)真空(kong)泵并且配防爆(bao)电机(ji)，因为水(shui)环式(shi)真空(kong)泵整(zheng)个工作过程是等温(wen)的。　　

　　2.真空(kong)设备或者零部件对油(you)污染(ran)的要(yao)求(qiu)。若设备严格要(yao)求(qiu)无油(you)时，应(ying)该选各种无油(you)泵(beng)，如：水环(huan)式(shi)真空(kong)泵(beng)、分子(zi)筛吸附泵(beng)、溅射离子(zi)泵(beng)、低温泵(beng)等。若要(yao)求(qiu)不严格，可以选择(ze)有(you)油(you)泵(beng)，并且加(jia)上一些防油(you)污染(ran)措施，如加(jia)冷阱(jing)、障板(ban)、挡油(you)阱(jing)等，也能达到清洁真空(kong)要(yao)求(qiu)。　　

　　3.真空泵排出来的(de)油蒸气对环境(jing)的(de)影(ying)响(xiang)如(ru)何。如(ru)果环境(jing)不允许(xu)有污染，可(ke)以(yi)选无油真空泵如(ru)水环式(shi)真空泵，或者(zhe)把油蒸气排到室外。　　

　　4.如有多台大型水环(huan)式(shi)真空(kong)泵(beng)(beng)同时(shi)工作，循(xun)环(huan)液应该进行冷(leng)却，否(fou)则影响真空(kong)度。冷(leng)却装(zhuang)置可以配备冷(leng)却塔，同时(shi)须配增压泵(beng)(beng)对管路加压。　

　　5.真空(kong)泵的工(gong)作压(ya)强应(ying)该(gai)满(man)足(zu)真空(kong)设备的极限真空(kong)及工(gong)作压(ya)强要求。通常选择真空(kong)泵泵的真空(kong)度(du)要高于真空(kong)设备真空(kong)度(du)半个到一个数量级。　

　　6.真空泵在其工作压(ya)强下，应(ying)能(neng)排走真空设备工艺过程中产生(sheng)的全部气体量。

它具(ju)有结构(gou)简(jian)单、操作容易、维护方便、不会(hui)污染(ran)环境等(deng)优(you)点。无油(you)真(zhen)(zhen)空(kong)(kong)泵(beng)(beng)耐用(yong)性好，是抽真(zhen)(zhen)空(kong)(kong)，压(ya)缩，两用(yong)真(zhen)(zhen)空(kong)(kong)泵(beng)(beng)，是一种应用(yong)范围非常广(guang)泛获(huo)得真(zhen)(zhen)空(kong)(kong)的(de)基本设(she)备。

无油(you)真空泵与油(you)泵相(xiang)比真空度低(di)，抽气量小，但体积小巧，易于(yu)安装(zhuang)，维护(hu)简单，移动方便，不产生油(you)烟，不污染(ran)环境(jing)，尤(you)其在要求较高的(de)实验室使用较好。也是实验室最常备的(de)设备之(zhi)一。

因此在(zai)选(xuan)购无(wu)(wu)油(you)真(zhen)空(kong)(kong)泵(beng)(beng)时(shi)要(yao)(yao)(yao)先确定要(yao)(yao)(yao)求(qiu)工作的(de)(de)(de)真(zhen)空(kong)(kong)度(du)，如果需(xu)(xu)求(qiu)的(de)(de)(de)真(zhen)度(du)高，而选(xuan)的(de)(de)(de)真(zhen)空(kong)(kong)泵(beng)(beng)就(jiu)要(yao)(yao)(yao)高于(yu)需(xu)(xu)求(qiu)的(de)(de)(de)真(zhen)空(kong)(kong)度(du)，否则达不到(dao)抽(chou)真(zhen)空(kong)(kong)的(de)(de)(de)要(yao)(yao)(yao)求(qiu)，就(jiu)会达不到(dao)工作要(yao)(yao)(yao)求(qiu)。其(qi)次是无(wu)(wu)油(you)真(zhen)空(kong)(kong)泵(beng)(beng)抽(chou)气(qi)速率(lv)，选(xuan)型时(shi)就(jiu)要(yao)(yao)(yao)稍(shao)大于(yu)所(suo)需(xu)(xu)求(qiu)的(de)(de)(de)抽(chou)气(qi)速率(lv)，这样(yang)就(jiu)能更好的(de)(de)(de)满足需(xu)(xu)要(yao)(yao)(yao)。最(zui)后(hou)看抽(chou)取的(de)(de)(de)气(qi)体(ti)有(you)无(wu)(wu)腐蚀(shi)性，有(you)腐蚀(shi)的(de)(de)(de)气(qi)体(ti)会腐蚀(shi)泵(beng)(beng)，必须要(yao)(yao)(yao)用(yong)特殊的(de)(de)(de)材质才能满足需(xu)(xu)求(qiu)。