離心泵由于結(jié)構(gòu)簡單、效率高、流量大、無脈動、價(jià)格低而廣泛使用，離心泵約占全部工、農(nóng)業(yè)用泵量的百分之八十以上。共同的特點(diǎn)：結(jié)構(gòu)簡單液流平穩(wěn)無脈動中小流量領(lǐng)域有相似的效率和運(yùn)行曲線。撓性泵的優(yōu)勢：離心泵只能用于稀薄、低粘度的液體，無法輸送中、高粘度的流體、半流體。而撓性泵從低到高粘度均可。離心泵無法輸送含較大懸浮顆粒的介質(zhì)。離心泵無法輸送含氣液、泡沫液。離心泵轉(zhuǎn)速高，不能低轉(zhuǎn)速運(yùn)行，所以對介質(zhì)剪切極大，不適合輸送對剪切具有敏感的介質(zhì)。離心泵無自吸能力。如要自吸需加附加裝置，如儲液罐、底閥，次啟動需灌液，完成自吸動作的速度慢；應(yīng)用于衛(wèi)生領(lǐng)域，儲液罐有可能成為新的污染源。此外，離心泵的安裝位置受限。后，請注意，離心泵不能作為計(jì)量泵使用。一般來講，撓性泵與離心泵之間無競爭關(guān)系。撓性泵作為離心泵的替代泵種，主要用于吸排離心泵無法輸送的介質(zhì)或離心泵無法適應(yīng)的工況場合(圖\文www.ds128.cn/news.asp)。 中譯英： Centrifugal pump with the advantages of simple structure, high efficiency, large flow, no pulse, low prices and widespread use of centrifugal pump, accounted for about all workers, more than eighty percent of the volume of agricultural pumps. Common features: simple structure smooth flow pulsation free medium and small flow field have similar efficiency and operation curve. Advantages: flexible pump centrifugal pump can only be used to thin, low viscosity of the liquid, to transportation, high viscosity fluid, semi-fluid. The flexible pump from low to high viscosity can be. Centrifugal pump with large transport of suspended particles in the medium. Centrifugal pump to transfer with gas liquid, foam liquid. Centrifugal pump with high speed, low speed operation can not, so the medium shear greatly, not suitable for the transport of shear sensitive media. Centrifugal pump Self-suction capability. If the self-priming need to add additional device, such as a liquid storage tank, valve, first start need irrigation fluid, completion of self-sucking action speed is slow; used in the health field, liquid storage tank has the potential to become the new source of pollution. In addition, centrifugal pump installation position is limited. Finally, note, centrifugal pump can not be used as a metering pump use. Generally speaking, the flexible pump and centrifugal pump without competitive relationship between. Flexible pump centrifugal pump pump as alternative, mainly used for suction centrifugal pump can transport medium or centrifugal pump can not adapt to situations.
