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伺服阀与比例阀的区别
伺服阀与比例阀之间的差别并没有严格的规定，因为比例阀的性能越来越好，逐渐向伺服阀靠近，所以近些年出现了比例伺服阀。
比例阀和伺服阀的区别主要体现在以下几点：
1.驱动装置不同。比例阀的驱动装置是比例电磁铁；伺服阀的驱动装置是力马达或力矩马达；
2.性能参数不同。滞环、中位死区、频宽、过滤精度等特性不同，因此应用场合不同，伺服阀和伺服比例阀主要应用在闭环控制系统，其它结构的比例阀主要应用在开环控系统及闭环速度控制系统；
博世REXROTH比例阀0811404003
力士乐比例阀 4WS2EM10-4X/30B3ET315K8DV
力士乐比例阀 4WS2EM10-4X/30B4T315K8DV
力士乐比例阀 4WS2EM10-4X/45B2ET315K8AM
力士乐比例阀 4WS2EM10-4X/45B2ET315K8BM
力士乐比例阀 4WS2EM10-4X/45B2ET315K8BV
力士乐比例阀 4WS2EM10-4X/45B2ET315K8CV
力士乐比例阀 4WS2EM10-4X/45B2ET315K8DM
力士乐比例阀 4WS2EM10-4X/45B2ET315K8DV
力士乐比例阀 4WS2EM10-4X/45B2ET315K8EV
力士乐比例阀 4WS2EM10-4X/45B2T315K8DM
力士乐比例阀 4WS2EM10-4X/45B2T315K8EV
力士乐比例阀 4WS2EM10-4X/45B3T315K8CV
力士乐比例阀 4WS2EM10-4X/5B2ET315K8AM
力士乐比例阀 4WS2EM10-4X/5B2ET315K8BM
力士乐比例阀 4WS2EM10-4X/5B2ET315K8BV
力士乐比例阀 4WS2EM10-4X/5B2ET315K8BV-52
力士乐比例阀 4WS2EM10-4X/5B2ET315K8DM
力士乐比例阀 4WS2EM10-4X/5B2ET315K8DV-52
力士乐比例阀 4WS2EM10-4X/5B2ET315K8EV
力士乐比例阀 4WS2EM10-4X/5B3ET315K8AM
力士乐比例阀 4WS2EM10-4X/5B3ET315K8AM-10
力士乐比例阀 4WS2EM10-4X/5B3T315K8DV
力士乐比例阀 4WS2EM10-4X/5B3T315K8DV-24
力士乐比例阀 4WS2EM10-4X/60B1ET315K8AM
力士乐比例阀 4WS2EM10-4X/60B1T315K8DV
力士乐比例阀 4WS2EM10-4X/60B2ET315K8DM
力士乐比例阀 4WS2EM10-4X/60B2ET315K8EV
力士乐比例阀 4WS2EM10-4X/60B2T315K8BV
力士乐比例阀 4WS2EM10-4X/60B2T315K8DV
力士乐比例阀 4WS2EM10-4X/60B2T315K8EV
力士乐比例阀 4WS2EM10-4X/60B3ET315K8AM
力士乐比例阀 4WS2EM10-4X/60B3ET315K8AM-10
力士乐比例阀 4WS2EM10-4X/60B4T315K8DV
力士乐比例阀 4WS2EM10-4X/60B5ET315K8EV
力士乐比例阀 4WS2EM10-4X/75B1T315K8AM
力士乐比例阀 4WS2EM10-4X/75B2ET315K8AM
力士乐比例阀 4WS2EM10-4X/75B2ET315K8BM
力士乐比例阀 4WS2EM10-4X/75B2ET315K8BV
力士乐比例阀 4WS2EM10-4X/75B2ET315K8DM
力士乐比例阀 4WS2EM10-4X/75B2ET315K8DV
力士乐比例阀 4WS2EM10-4X/75B2ET315K8EM
力士乐比例阀 4WS2EM10-4X/75B2ET315K8EV
博世REXROTH比例阀0811404003
卧式柱塞泵
卧式柱塞泵是由几个柱塞（一般为3个或6个）并列安装，用1根曲轴通过连杆滑块或由偏心轴直接推动柱塞做往复运动，实现吸、排液体的液压泵。它们也都采用阀式配流装置，而且大多为定量泵。煤矿液压支架系统中的乳化液泵一般都是卧式柱塞泵。
乳化液泵用于采煤工作面，为液压支架提供乳化液，工作原理靠曲轴的旋转带动活塞做往复运动，实现吸液和排液。
博世REXROTH比例阀0811404003
力士乐比例阀 4WS2EM10-4X/75B2T315K8DV
力士乐比例阀 4WS2EM10-4X/75B3ET315K8AM
力士乐比例阀 4WS2EM10-4X/75B3ET315K8DM
力士乐比例阀 4WS2EM10-4X/75B3ET315K8EV
力士乐比例阀 4WS2EM10-4X/75B3T315K8CV
力士乐比例阀 4WS2EM10-4X/75B3T315K8CV-24
力士乐比例阀 4WS2EM10-4X/75B3T315K8CV-94
力士乐比例阀 4WS2EM10-5X/10B11ET210K31AV
力士乐比例阀 4WS2EM10-5X/10B11ET315K31DV
力士乐比例阀 4WS2EM10-5X/10B11ET315K31EV
力士乐比例阀 4WS2EM10-5X/10B11ET315K8BV
力士乐比例阀 4WS2EM10-5X/10B11ET315K8DV
力士乐比例阀 4WS2EM10-5X/10B11ET315K8EV
力士乐比例阀 4WS2EM10-5X/20B11-210K31EV
力士乐比例阀 4WS2EM10-5X/20B11-315K31EV
力士乐比例阀 4WS2EM10-5X/20B11ET210K31BV
力士乐比例阀 4WS2EM10-5X/20B11ET210K31EV
力士乐比例阀 4WS2EM10-5X/20B11ET315K31DV
力士乐比例阀 4WS2EM10-5X/20B11ET315K31EV
力士乐比例阀 4WS2EM10-5X/20B11ET315K8AV
力士乐比例阀 4WS2EM10-5X/20B11ET315K8EV
力士乐比例阀 4WS2EM10-5X/20B11T210K31EV
力士乐比例阀 4WS2EM10-5X/20B11T315K8DV
力士乐比例阀 4WS2EM10-5X/20B11XHET315K31DV-104
力士乐比例阀 4WS2EM10-5X/30B11ET315K31BV
力士乐比例阀 4WS2EM10-5X/30B11ET315K31DV
力士乐比例阀 4WS2EM10-5X/30B11ET315K31EV
力士乐比例阀 4WS2EM10-5X/30B11T315K31CV-114
力士乐比例阀 4WS2EM10-5X/30B11T315K31EV
力士乐比例阀 4WS2EM10-5X/45B11ET210K31EV
力士乐比例阀 4WS2EM10-5X/45B11ET210K8AV
力士乐比例阀 4WS2EM10-5X/45B11ET315K31AV
力士乐比例阀 4WS2EM10-5X/45B11ET315K31DV
力士乐比例阀 4WS2EM10-5X/45B11ET315K31EV
力士乐比例阀 4WS2EM10-5X/45B11ET315K8DV
力士乐比例阀 4WS2EM10-5X/45B11ET315K8EV
Rexroth比例阀 4WS2EM10-5X/45B11T315K31EV
Rexroth比例阀 4WS2EM10-5X/45B11T315K8DV
Rexroth比例阀 4WS2EM10-5X/45B11XHET315K31EV
Rexroth比例阀 4WS2EM10-5X/5B11ET315K31EV
Rexroth比例阀 4WS2EM10-5X/5B11ET315K8EV
Rexroth比例阀 4WS2EM10-5X/60B11-210K31EV
Rexroth比例阀 4WS2EM10-5X/60B11ET315K31AV
Rexroth比例阀 4WS2EM10-5X/60B11ET315K31DV
Rexroth比例阀 4WS2EM10-5X/60B11ET315K31EV
Rexroth比例阀 4WS2EM10-5X/60B11T315K31CV
博世REXROTH比例阀0811404003
电磁阀从原理上分为三大类：
1）直动式电磁阀：
原理：通电时，电磁线圈产生电磁力把关闭件从阀座上提起，阀门打开；断电时，电磁力消失，弹簧把关闭件压在阀座上，阀门关闭。
特点：在真空、负压、零压时能正常工作，但通径一般不超过25mm。
2）分步直动式电磁阀：
原理：它是一种直动和先导式相结合的原理，当入口与出口没有压差时，通电后，电磁力直接把先导小阀和主阀关闭件依次向上提起，阀门打开。当入口与出口达到启动压差时，通电后，电磁力先导小阀，主阀下腔压力上升，上腔压力下降，从而利用压差把主阀向上推开；断电时，先导阀利用弹簧力或介质压力推动关闭件，向下移动，使阀门关闭。
特点：在零压差或真空、高压时亦能可*动作，但功率较大，要求必须水平安装。
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R900776398 4WRZ 25 E1-220-7X/6EG24N9EK4/D3M
R900776399 4WRZE 10 E1-50-7X/6EG24N9ETK31/A1D3M
R900776400 4WRZE 10 W8-50-7X/6EG24N9ETK31/A1D3M
R900776402 DBDS 30 K1X/170E
R900776413 DBW 30 AG2N5X/200P180-6EW230N9K4
R900776419 DBW 30 B2N5X/315YS6EG24N9K4R12E
R900776422 DBDH 6 K1X/280E
R900776429 3WRCE 50 V720L-2X/PG24K31/A1WL15V
R900776443 M-3SEW 6 C3X/420MG24K4QMAG24
R900776478 4WE 6 E67B6X/EG24N9K4/T06
R900776494 DBDS 6 K1X/95E
R900776495 DBDS 10 K1X/200-120
R900776501 4WRZE 10 W6-85-7X/6EG24N9EK31/A1D3M
R900776541 4WEH 22 D7X/6EW230N9ES2K4/B10
R900776553 P2V7/20-25A0+GZ/32RE01+01E4
R900776594 DBDS 20 G1X/210E
R900776598 DB 20-2-5X/315V SO631
R900776611 4WRZ 16 W9-150-7X/6EG24N9ETK4/D3M
R900776632 DBAR 40 H2N1X/200V
R900776668 SYDFEE-2X/045R-PSA12KC2-0000-A0A0VX2
R900776671 ZDR 6 DP2-4X/150-090YM
R900776804 4WREE 6 EB16-2X/G24K31/A1V
R900776825 4WRKE 25 W350P-3X/6EG24K31/A5D3M-709
R900776860 4WEH 22 S1-7X/6EG24N9K4/V
R900776880 4WP 6 J6X/SO23
R900776893 M-3SEW 6 C3X/630MG24K4/V
博世REXROTH比例阀0811404003
