影(ying)响旋片(pian)真空(kong)泵工(gong)作效(xiao)率的主要因素(su)有哪些呢(ni)？能(neng)够对旋片(pian)式(shi)真空(kong)泵效(xiao)率直接造成(cheng)影(ying)响的因素(su)中，最为重(zhong)要的一个因素(su)就是泵油。为什么这么说呢(ni)？具体理由如下：
一、泵油质量对(dui)泵的(de)影响
1、某些(xie)泵油(you)(you)(you)供应部(bu)门没(mei)有严格执(zhi)行(xing)真空(kong)油(you)(you)(you)专(zhuan)用(yong)油(you)(you)(you)桶的要(yao)求,各种油(you)(you)(you)桶混用(yong),以致在真空(kong)泵油(you)(you)(you)中混杂其它(ta)饱和蒸汽(qi)压较高的油(you)(you)(you)类, 导致旋片真空(kong)泵在运转时达不到应有的真空(kong)度。
2、一(yi)(yi)些(xie)油料(liao)供应部(bu)门用水(shui)清洗(xi)油桶,事后又不进行干燥处理,以致水(shui)与泵(beng)油混在一(yi)(yi)起(qi)。这种情况时有(you)发生, 必须引起(qi)注(zhu)意。
3、一些泵油(you)(you)用(yong)量较多的(de)生产厂和使用(yong)单位往(wang)往(wang)将油(you)(you)贮存在大油(you)(you)罐(guan)中(zhong),由于购买的(de)每桶油(you)(you)或(huo)多或(huo)少都有一些水分,而空气中(zhong)的(de)水气也从与大油(you)(you)罐(guan)中(zhong)的(de)油(you)(you)表面的(de)接触中(zhong)慢慢渗入(ru)油(you)(you)中(zhong),时间(jian)长了(le)积(ji)聚在罐(guan)底的(de)水也很可观(guan)。
4 、泵长期在(zai)高温下工(gong)作,导致泵油(you)裂化程度加快,尤(you)其是在(zai)100℃以上工(gong)作,泵油(you)很快就变质,致使泵真空(kong)度下降。
二、泵进油量对泵的(de)影响
真(zhen)空(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)油(you)(you)(you)在(zai)旋(xuan)片真(zhen)空(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)中的(de)(de)作(zuo)(zuo)(zuo)用(yong)主要(yao)(yao)是冷却、密封(feng)和(he)润滑(hua),在(zai)真(zhen)空(kong)(kong)(kong)(kong)(kong)度(du)(du)较高时还起(qi)顶开排气阀的(de)(de)作(zuo)(zuo)(zuo)用(yong)。进油(you)(you)(you)量(liang)对旋(xuan)片真(zhen)空(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng)的(de)(de)真(zhen)空(kong)(kong)(kong)(kong)(kong)度(du)(du)有(you)一(yi)定的(de)(de)影响(xiang)。进油(you)(you)(you)量(liang)过(guo)少(shao),形(xing)不(bu)成(cheng)油(you)(you)(you)封(feng),保(bao)证不(bu)了(le)(le)密封(feng)作(zuo)(zuo)(zuo)用(yong),泵(beng)(beng)(beng)的(de)(de)真(zhen)空(kong)(kong)(kong)(kong)(kong)度(du)(du)就下降(jiang)(jiang)(jiang)。进油(you)(you)(you)量(liang)过(guo)少(shao),满足不(bu)了(le)(le)润滑(hua)的(de)(de)要(yao)(yao)求(qiu),泵(beng)(beng)(beng)还可(ke)能造成(cheng)过(guo)量(liang)磨损。进油(you)(you)(you)量(liang)过(guo)多,泵(beng)(beng)(beng)必须把(ba)(ba)过(guo)量(liang)的(de)(de)油(you)(you)(you)排出, 起(qi)了(le)(le)类似(si)油(you)(you)(you)泵(beng)(beng)(beng)的(de)(de)作(zuo)(zuo)(zuo)用(yong), 因此噪声提高,消耗功率增加,发(fa)热厉(li)害(hai),泵(beng)(beng)(beng)油(you)(you)(you)的(de)(de)饱和(he)蒸汽压(ya)升高,粘度(du)(du)下降(jiang)(jiang)(jiang),油(you)(you)(you)的(de)(de)密封(feng)作(zuo)(zuo)(zuo)用(yong)降(jiang)(jiang)(jiang)低(di),泵(beng)(beng)(beng)的(de)(de)真(zhen)空(kong)(kong)(kong)(kong)(kong)度(du)(du)也(ye)就下降(jiang)(jiang)(jiang)。例如一(yi)台旋(xuan)片真(zhen)空(kong)(kong)(kong)(kong)(kong)泵(beng)(beng)(beng), 试制时进油(you)(you)(you)孔没有(you)按图加工,以致进油(you)(you)(you)量(liang)过(guo)大,使泵(beng)(beng)(beng)温(wen)度(du)(du)高达(da)83℃(室(shi)温(wen)25℃),真(zhen)空(kong)(kong)(kong)(kong)(kong)度(du)(du)也(ye)就达(da)不(bu)到(dao)要(yao)(yao)求(qiu)。后来把(ba)(ba)进油(you)(you)(you)量(liang)适量(liang)减少(shao),泵(beng)(beng)(beng)温(wen)即降(jiang)(jiang)(jiang)到(dao)65℃。因此认为控制进油(you)(you)(you)量(liang)对提高泵(beng)(beng)(beng)的(de)(de)真(zhen)空(kong)(kong)(kong)(kong)(kong)度(du)(du)有(you)一(yi)定的(de)(de)影响(xiang)。