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渣漿泵可動葉片調節(jié)流量揚程
當改變葉片安放角時,泵的性能將隨之改變,所以將葉片制作成可轉動可改變葉片安裝角就可改變泵的性能,從而達到調節(jié)的目的。這種方法只能用于軸流泵和混流泵中,尤其是軸流泵中用的較多。改變葉片安放角的方法,常有兩種情況,一是固定的調節(jié), 二是運行中可隨時調節(jié)。固定調節(jié)是根據(jù)需要的性能確定其葉片安裝角,用螺釘擰緊固定,另一種是通過機械方法或液壓方法,泵在運行中,隨時都可以轉動葉片改變葉片安放角進行調節(jié),但其結構復雜,所以常只用于大型泵中。
六、減少葉輪數(shù)目調節(jié)
在多級泵中,減少葉輪數(shù)目來降低泵的揚程,從而達到調節(jié)的目的,所以只能用在多級泵中,調節(jié)時,取下1個或2個葉輪和相應的導葉,用一個長度相當?shù)妮S套來代替所取下葉輪位置。用這種方法調節(jié)時,流量不變,只改變了揚程,減少 一個葉輪就減少一級揚程,這種方法會增加一定的阻力損失,所以取下的葉輪不宜太多,并且應取下最后面的葉輪,否則會造成泵的汽蝕。渣漿泵廠家
Adjustable blade flow head of slurry pump
When the blade angle is changed, the performance of the pump will be changed accordingly, so the performance of the pump can be changed by making the blade into a rotatable and changeable blade angle, so as to achieve the purpose of adjustment. This method can only be used in axial flow pump and mixed flow pump, especially in axial flow pump. There are two ways to change the setting angle of blade, one is fixed adjustment, the other is adjustable at any time during operation. Fixed adjustment is to determine the installation angle of the blade according to the required performance, and tighten it with screws. The other is to adjust the installation angle of the blade by turning the blade at any time during the operation of the pump through mechanical or hydraulic methods, but its structure is complex, so it is often only used in large pumps.
Vi. reduction of impeller number adjustment
In multistage pump, reduce the number of impellers to reduce the pump head, so as to achieve the purpose of adjustment, so it can only be used in multistage pump. When adjusting, remove one or two impellers and corresponding guide vanes, and replace the position of the removed impeller with a shaft sleeve of the same length. When this method is used for adjustment, the flow will not change, only the head will be changed, and the first stage head will be reduced if one impeller is reduced. This method will increase certain resistance loss, so it is not suitable to remove too many impellers, and the last impeller should be removed, otherwise it will cause cavitation of the pump. Slurry pump manufacturer
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