意大利ATOS齒輪泵PFG-211-D-R0

意大利ATOS齒輪泵PFG-211-D-R0

齒輪泵的概念是很簡單的，即它的Z基本形式就是兩個尺寸相同的齒輪在一個緊密配合的殼體內相互嚙合旋轉，這個殼體的內部類似“8”字形，兩個齒輪裝在里面，齒輪的外徑及兩側與殼體緊密配合。來自于擠出機的物料在吸入口進入兩個齒輪中間，并充滿這一空間，隨著齒的旋轉沿殼體運動，Z后在兩齒嚙合時排出。
在術語上講，齒輪泵也叫正排量裝置，即像一個缸筒內的活塞，當一個齒進入另一個齒的流體空間時，液體就被機械性地擠排出來。因為液體是不可壓縮的，所以液體和齒就不能在同一時間占據同一空間，這樣，液體就被排除了。由于齒的不斷嚙合，這一現象就連續在發生，因而也就在泵的出口提供了一個連續排除量，泵每轉一轉，排出的量是一樣的。隨著驅動軸的不間斷地旋轉，泵也就不間斷地排出流體。泵的流量直接與泵的轉速有關。
實際上，在泵內有很少量的流體損失，這使泵的運行效率不能達到，因為這些流體被用來潤滑軸承及齒輪兩側，而泵體也絕不可能無間隙配合，故不能使流體地從出口排出，所以少量的流體損失是必然的。然而泵還是可以良好地運行，對大多數擠出物料來說，仍可以達到93%～98%的效率。
對于粘度或密度在工藝中有變化的流體，這種泵不會受到太多影響。如果有一個阻尼器，比如在排出口側放一個濾網或一個限制器，泵則會推動流體通過它們。如果這個阻尼器在工作中變化，亦即如果濾網變臟、堵塞了，或限制器的背壓升高了，則泵仍將保持恒定的流量，直至達到裝置中Z弱的部件的機械極限(通常裝有一個扭矩限制器)。

AGAM-10/10/100/V-IN24DC WG
AGAM-10/10/210-IN230AC
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AGAM-10/100
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C-14128
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