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PARKER派克电磁阀02F20C1108ABFPH01
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PARKER派克电磁阀02F20C1108ABFPH01
派克柱塞泵
工作原理：图中柱塞2装在缸体3中形成一个密封容积a，柱塞在弹簧4的作用下始终压紧在偏心轮1上。原动机驱动偏心
轮1旋转使柱塞2作往复运动，使密封容积a的大小发生周期性的交替变化。当a由小变大时就形成部分真空，使油箱中油
液在大气压作用下， 经过吸油管顶开吸油单向阀6进入a腔而实现吸油：反之，当a由大变小时，油液挤压，压力增大,a
腔中的油液将顶开排油单向阀5流人系统而实现排油。这样派克柱塞泵就将原动机输人的机械能转换成液体的压力能，
原动机驱动偏心轮不断旋转，派克柱塞泵就不断地吸油和排油，
从派克柱塞泵的工作原理可看出，容积式派克柱塞泵基本的工作条件如下
(1)必须有密封容积存在，同时密封容积大小不断发生变化，以此完成吸油和排油过程
(2)要有配油机构，通过配油机构将吸液腔和排液腔隔开，保证派克柱塞泵有规律地连续吸排油
(3)油箱内液体的####压力必须等于或大于大气压力，这是容积式派克柱塞泵能够吸人油液的外部条件
派克柱塞泵的分类方法很多，其各种分类方法如下
按工作机构的结构分为腿泵〔外啮合式、内啮合式)、叶片泵(单作用式、双作用式)、柱塞泵（轴向式，径向式）和螺
杆泵（双螺杆式、三螺杆式）
按泵的每转排量是否能调节分为定量泵和变量泵。
按泵的排油方向分为单向泵和双向泵
按泵的工作压力分为低压泵（压力小于2.5Mpa）、中压泵（压力为2.5Mpa~8Mpa）、中髙压泵（压力为8 Mpa~16Mpa）
高压泵（压力为16Mpa~32Mpa）和超髙压泵（压力大于32Mpa）
各种派克柱塞泵都可以制造成定量泵，如齿轮泵（外啮合式、内啮合式）、叶片泵（单作用式、双作用式）、柱塞泵〔
轴向式、径向式）和螺扞泵（双螺杆式、三螺杆式）；有的派克柱塞泵能制造成变量泵，如单作用叶片泵、轴向柱塞泵
和径向柱塞泵。
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