GR60SMT16B440LRF2螺桿泵現(xiàn)貨供應GR60SMT16B440LRF2螺桿泵現(xiàn)貨供應
選擇技巧：
一、泵轉速的選擇
1.以輸送介質(zhì)粘度和泵的規(guī)格確定轉速范圍.
2.輸送高粘度介質(zhì)時,泵應選粘度較低,轉速較低,相應可選擇高轉速.
3.泵的轉速越高,泵體積就越小,但因轉速高,摩擦功率高,泵磨損就大,壽命就短,如果輸送介質(zhì)潤滑性較差或含有微量雜質(zhì),應選較低轉速來保持較長的壽命.
二、泵的安裝和使用條件
1.輸送潤滑性油類,溫度在80°C以下選擇內(nèi)置軸承結構的泵.溫度超過80°C或輸送介質(zhì)潤滑性差時,選擇外置軸承結構的泵.
2.輸送流動性差,粘度較高的介質(zhì)或需要所輸送介質(zhì)進行加熱或保溫時選擇雙層加熱泵體結構的泵;
3.高溫輸送時,應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、壓力在相同轉速、粘度時近似呈直線關系,壓力越高,流量越小.
2.相同轉速、粘度下,軸功率與壓力近似成正比.相同粘度、壓力下,泵的流量與轉速近似成正比.同一粘度、壓力下,軸功率與轉速近似成正比.
3.粘度增大時,流量和軸功率均增加,但由于其中關系較復雜,必要時可向?qū)I(yè)人員咨詢.GR20SMT16B8L S2 RF2
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