意大利*GR45SMT16B210LRF2三螺桿泵意大利*GR45SMT16B210LRF2三螺桿泵
選擇技巧:
一、泵轉(zhuǎn)速的選擇
1.以輸送介質(zhì)粘度和泵的規(guī)格確定轉(zhuǎn)速范圍.
2.輸送高粘度介質(zhì)時(shí),泵應(yīng)選粘度較低,轉(zhuǎn)速較低,相應(yīng)可選擇高轉(zhuǎn)速.
3.泵的轉(zhuǎn)速越高,泵體積就越小,但因轉(zhuǎn)速高,摩擦功率高,泵磨損就大,壽命就短,如果輸送介質(zhì)潤(rùn)滑性較差或含有微量雜質(zhì),應(yīng)選較低轉(zhuǎn)速來(lái)保持較長(zhǎng)的壽命.
二、泵的安裝和使用條件
1.輸送潤(rùn)滑性油類,溫度在80°C以下選擇內(nèi)置軸承結(jié)構(gòu)的泵.溫度超過(guò)80°C或輸送介質(zhì)潤(rùn)滑性差時(shí),選擇外置軸承結(jié)構(gòu)的泵.
2.輸送流動(dòng)性差,粘度較高的介質(zhì)或需要所輸送介質(zhì)進(jìn)行加熱或保溫時(shí)選擇雙層加熱泵體結(jié)構(gòu)的泵;
3.高溫輸送時(shí),應(yīng)選擇耐高溫的材料所制成的泵.
三、泵的性能參數(shù)
1.三螺桿泵的流量、壓力在相同轉(zhuǎn)速、粘度時(shí)近似呈直線關(guān)系,壓力越高,流量越小.
2.相同轉(zhuǎn)速、粘度下,軸功率與壓力近似成正比.相同粘度、壓力下,泵的流量與轉(zhuǎn)速近似成正比.同一粘度、壓力下,軸功率與轉(zhuǎn)速近似成正比.
3.粘度增大時(shí),流量和軸功率均增加,但由于其中關(guān)系較復(fù)雜,必要時(shí)可向?qū)I(yè)人員咨詢.GR20SMT16B8L S2 RF2
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