GHP2A-D-25 Marzocchi马祖奇齿轮泵*

Marzocchi马祖奇齿轮泵*
ALP1-D-2 ALP1-D-3 ALP1-D-4 ALP1-D-5 ALP1-D-6
ALP1-D-7 ALP1-D-9 ALP1-D-11 ALP1-D-13 ALP1-D-16
ALP1-D-20 ALP1A-D-2 ALP1A-D-3 ALP1A-D-4 ALP1A-D-5
ALP1A-D-6 ALP1A-D-7

Marzocchi马祖奇齿轮泵*

卸荷溢流阀由溢流阀和单向阀组成。当系统压力达到溢流阀的开启压力时，溢流阀开启，泵卸荷；当系统压力降至溢流阀的关闭压力时，溢流阀关闭，泵向系统加载。使泵卸荷时的压力称为卸荷压力，使泵处于加载状态的压力称为加载压力。它依靠压缩弹簧把液压系统中的过剩压力能转化为弹簧势能存储起来，需要时释放出去。其结构简单，成本较低。但是因为弹簧伸缩量有限，而且弹簧的伸缩对压力变化不敏感，消振功能差，所以只适合小容量、低压系统（P≦1.0～1.2MPa），或者用作缓冲装置。

它通过提升加载在密封活塞上的质量块把液压系统中的压力能转化为重力势能积蓄起来。其结构简单、压力稳定。缺点是安装局限性大，只能垂直安装；不易密封；质量块惯性大，不灵敏。这类蓄能器仅供暂存能量用。

卸荷溢流阀的主要功能是自动控制泵的卸荷或加载。鉴于卸荷溢流阀的功用，要求卸荷压力与加载压力之间存在一定差别。差值过小，则泵的卸荷与加载动作过于频繁；差值过大，则系统压力变化太大。

Marzocchi马祖奇齿轮泵*

ALP1-D-2  ALP1-D-3  ALP1-D-4  ALP1-D-5  ALP1-D-6
ALP1-D-7  ALP1-D-9  ALP1-D-11 ALP1-D-13 ALP1-D-16

ALP1-D-20 ALP1A-D-2 ALP1A-D-3 ALP1A-D-4 ALP1A-D-5
ALP1A-D-6 ALP1A-D-7 ALP1A-D-9

ALP1A-D-11 ALP1A-D-13 ALP1A-D-16 ALP1A-D-20 ALP1AQ-D-2
ALP1AQ-D-4 ALP1AQ-D-5 ALP1AQ-D-6 ALP1AQ-D-7 ALP1AQ-D-9

ALP1AQ -D-3 ALP1AQ-D-11 ALP1AQ-D-13 ALP1AQ-D-16
ALP1AQ-D-20 ALP1AQN-D-2 ALP1AQN-D-3 ALP1AQN-D-4

ALP1AQN-D-5  ALP1AQN-D-6  ALP1AQN-D-7  ALP1AQN-D-9
ALP1AQN-D-11 ALP1AQN-D-13 ALP1AQN-D-16 ALP1AQN-D-20

ALP2-D-10 ALP2-D-12 ALP2-D-13  ALP2-D-16  ALP1AF-S-4
ALP2-D-20 ALP2-D-22 ALP2-D-25  ALP2-D-30  ALP1AF-S-5

ALP2-D-34 ALP2-D-37 ALP2-D-40  ALP2-D-50  ALP1AF-S-9
ALP2A-D-6 ALP2A-D-9 ALP1AF-S-7 ALP1AF-S-6 ALP2-D-9

ALP2A-D-10 ALP2A-D-12 ALP2A-D-13 ALP2A-D-16 ALP2-D-6
ALP2A-D-20 ALP2A-D-22 ALP2A-D-25 ALP2A-D-30 ALP2A-D-34