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产品名称:
R900922866￥德国REXROTH电磁换向阀
产品型号:
R900922866
产品展商:
BOSCH REXROTH
简单介绍
R900922866￥德国REXROTH电磁换向阀
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R900922866￥德国REXROTH电磁换向阀的详细介绍
R900922866￥德国REXROTH电磁换向阀
电磁换向阀的典型结构Typical Structure for Solenoid-actuated Directional Valve
图5.20所示为交流式二位三通电磁换向阀。当电磁铁断电时
，阀芯2被弹簧7推向左端，P 和A接通；
油浸式电磁铁（Oil-immersed Solenoid）。油浸式电磁铁的线圈和铁芯
都浸在无压油液中。推杆和衔铁端部都装有密封圈
。油可帮助线圈散热，且可改善推杆的润滑条件，所以寿命远比干式电磁铁为长。因有多处密封，
③湿式电磁铁（Wetted Solenoid）。湿式电磁铁也叫耐压式电磁铁，
它和油浸式电磁铁不同处是推杆处无密封圈。线圈和衔铁都浸在有压油液中
，故散热好，摩擦小。还因油液的阻尼作用而减小了切换时的冲击和噪声。
所以湿式电磁铁具有吸着声小、寿命长、温升低等优点。是
目前应用广的一种电磁铁。也有人将油浸式电磁铁和耐压式电磁铁都叫做湿式电磁铁。
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