美國PARKER派克齒輪泵合肥

派克PARKER齒輪泵的主要特點(diǎn)就是結構簡(jiǎn)單、體積下、重量輕、轉速高且范圍大、自吸能力，對油液污染不敏感、工作、維護方便和格廉等，在般液壓傳動(dòng)系統中，特別是工程機械方面應用的比較廣泛。由于齒輪兩端面與泵蓋的間隙以及齒輪的齒頂與泵體內表面的間隙很小，因此，堆齒合的輪齒，將甭提、前后泵蓋和齒輪包圍的密封容積分割成左右兩個(gè)密封工作腔。當原動(dòng)機帶動(dòng)齒輪旋轉時(shí)，右側的輪齒不斷推出齒合，而左側的輪齒不斷進(jìn)入齒合，因呲合點(diǎn)半徑小于齒頂圓半徑，右側推出齒合的輪齒露出齒間，其密封工作腔逐漸增大，行程局部真空，油箱中的油液在大氣壓力的作用下經(jīng)泵的吸油口進(jìn)入這個(gè)密封油腔-吸油腔。隨著(zhù)齒輪的轉動(dòng)，吸入的油液被齒間轉移到左側的密封工作腔。左側進(jìn)入齒合的輪齒使密封油箱-壓油腔容積逐漸減小，把齒間油液擠出，從壓油口輸出，壓入液壓系統。這就是齒輪泵的吸油和壓油過(guò)程。

美國PARKER派克齒輪泵合肥
     派克齒輪泵設有差壓式安全閥作為超載保護，安全閥全回流壓力為泵額定排出壓力1.5倍。也可在允許排出壓力范圍內根據實(shí)際需要另行調整。但是此安全閥不能作減壓閥長(cháng)期工作，需要時(shí)可在管路上另行安裝。該齒輪泵泵軸端密封設計為兩種形式，種是機械密封，另種是填料密封，可根據具體使用情況和用戶(hù)要求確定。

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