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離心泵(bèng)在啓動時爲什(shí)麽要(yào)充滿(mǎn)水？

離(lí)心泵在啓動前，首先要充(chōng)滿水(shuǐ)，以排出泵殼内(nèi)的空氣。由 離心(xīn)泵 的工作原理(lǐ)可知，葉輪旋轉(zhuǎn)時，水受離心力(lì)作用而被(bèi)甩向(xiàng)葉輪外緣(yuán)，葉輪(lún)中心(xīn)處形(xíng)成真(zhēn)空，水被(bèi)吸入，形(xíng)成水(shuǐ)泵的連續(xù)工作過程(chéng)。如果(guǒ)啓動時泵體内(nèi)不是充(chōng)滿(mǎn)水，而(ér)是充滿空(kōng)氣，由(yóu)于空氣密(mì)度遠(yuǎn)遠小(xiǎo)于(yú)水的密(mì)度，在葉輪(lún)以同(tóng)樣的(de)速(sù)度(dù)旋轉時，空氣産生的(de)離心(xīn)力将遠小(xiǎo)于水的離(lí)心力(lì)。這樣會(huì)集聚在(zài)葉輪(lún)中心，使葉(yè)輪中心不能形成足(zú)夠的真空(kōng)，妨礙(ài)水(shuǐ)的吸入(rù)，影響水泵(bèng)連續工作(zuò)過(guò)程的形成。因此， 離心泵 在啓動前，必須(xū)首先充(chōng)滿(mǎn)水(shuǐ)，排(pái)淨泵體内(nèi)的空(kōng)氣，才能維持水(shuǐ)泵的正常工作(zuò)(圖\文 xiaojikuaipao.top/ )。
中譯(yì)英：
centrifugal pump before starting, must first be filled with water, to remove the pump casing of air. by the principle of centrifugal pump impeller rotates, the water that, by centrifugal force and is thrown to the outer edge of the impeller, the impeller center of vacuum, the water is sucked into the pump, forming a continuous working process. if you start the pump body is filled with water, but is filled with air, the air density is much less than the density of the water, the impeller to rotate at the same speed, air to generate centrifugal force is far less than that of water by centrifugal force. it will gather in the center of the impeller, the impeller center of the vacuum can not form enough, the way of water suction pump, continuous working process of formation. therefore, the centrifugal pump before starting, must first be filled with water, drain the air inside the pump body pump, to maintain the normal work.

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