主营:力士乐柱塞泵,力士乐比例阀,力士乐电磁阀,力士乐溢流阀,贝加莱伺服驱动
所在地:
上海 上海
产品价格:
电议
最小起订:
3
发布时间:
2024-06-06
有效期至:
2024-07-06
REXROTH比例溢流阀0811404410 博世力士乐优质商品 低价销售 特价现货 库存清仓 铸铁材质 优质供应 全国联保 欢迎来电咨询
我公司专业代理博世力士乐(BOSCH-REXROTH)、阿托斯ATOS、派克Parker、迪普马DUPLOMATIC、油研YUKEN;本特利bentley、贝加莱B&R、西门子、光洋KOYO,美国ASCO,美国PARKER派克 美国伊顿威格士VICKERS泵阀 日本大金DAIKIN电磁阀 美国艾尔泰克电磁阀 美国阿泰克电磁阀 等系列进口产品
REXROTH比例溢流阀0811404410 在液压传动系统中,控制油液压力高低的液压阀称之为压力控制阀,简称压力阀。这类阀的共同点是利用作用在阀芯上的液压力和弹簧力相平衡的原理工作的。
一、溢流阀的基本结构及其工作原理
溢流阀的主要作用是对液压系统定压或进行安全保护。
(一)溢流阀的作用和性能要求
1.溢流阀的作用
在液压系统中用来维持定压是溢流阀的主要用途。它常用于节流调速系统中,和流量控制阀配合使用,调节进入系统的流量,并保持系统的压力基本恒定。用于过载保护的溢流阀一般称为安全阀。
2.液压系统对溢流阀的性能要求
(1)定压精度高
(2)灵敏度要高
(3)工作要平稳且无振动和噪声
(4)当阀关闭时密封要好,泄漏要小。
(二)溢流阀的结构和工作原理
常用的溢流阀按其结构形式和基本动作方式可归结为直动式和先导式两种。
1.直动式溢流阀
直动式溢流阀是依靠系统中的压力油直接作用在阀芯上与弹簧力等相平衡,以控制阀芯的启闭动作,溢流阀是利用被控压力作为信号来改变弹簧的压缩量,从而改变阀口的通流面积和系统的溢流量来达到定压目的的。当系统压力升高时,阀芯上升,阀口通流面积增加,溢流量加大,进而使系统压力下降。溢流阀内部通过阀芯的平衡和运动构成的这种负反馈作用是其定压作用的基本原理,也是所有定压阀的基本工作原理。
2.先导式溢流阀
图-19所示为先导式溢流阀的结构示意图,由于先导阀芯一般为锥阀,受压面积较小,所以用一个刚度不太大的弹簧即可调整较高的开启压力,用螺钉调节导阀弹簧的预紧力,就可调节溢流阀的溢流阀压力。
先导式溢流阀有一个远程控制口K,如果将K口用油管接到另一个远程调压阀(远程调压阀的结构和溢流阀的先导控制部分一样),调节远程调压阀的弹簧力,即可调节溢流阀主阀芯上端的液压力,从而对溢流阀的溢流压力实现远程调压。但是,远程调压阀所能调节的较高压力不得超过溢流阀本身导阀的调整压力。当远程控制口K通过二位二通阀接通油箱时,主阀芯上端的压力接近于零,主阀芯上移到较高位置.阀口开得很大。由于主阀弹簧较软,这时溢流阀p口处压力很低,系统的油在低压下通过溢流阀流回油箱,实现卸荷。
(三)溢流阀的性能
溢流阀的性能包括溢流阀的静态性能和动态性能。
1.静态性能
(1)压力调节范围
压力调节范围是指调压弹簧在规定的范围内调节时,系统压力能平稳地上升或下降,且压力无突跳及迟滞现象时的较大和较小调定压力。溢流阀的较大允许流量为其额定流量,在额定流量下工作时溢流阀应无噪声、溢流阀的较小稳定流量取决于它的压力平稳性要求,一般规定为额定流量的15%。
(2)启闭特性
启闭特性是指溢流阀在稳态情况下从开启后到闭合的过程中,被控压力与通过溢流阀的溢流量之间的关系。它是衡量溢流阀定压精度的一个重要指标,一般用溢流阀处于额定流量、调定压力ps时,开始溢流的开启压力pk及停止溢流的闭合压力pB分别与ps的百分比来衡量,前者称为开启比,后者称为闭合比。
(3)卸荷压力
当溢流阀的远程控制口及与油箱相连时,额定流量下的压力损失称为卸荷压力。
上海韦米机电设备有限公司位于浦东金桥是全国工业传动流体自动化领域实力较强的经销代理商,有着丰富的气动液压技术服务、工业销售及全部采购的经验,主营产品涉及液压泵阀(电磁阀、柱塞泵拳头产品)、工控产品、驱动模块、伺服电机、可编程控制器PLC、数控传动、传感器系列、电源、气动元件、工业仪器仪表。具体主要经营品牌及产品如下:
博世力士乐rexroth工业液压气动元件大量现货(电磁换向阀、节流阀、单向阀、比例阀、伺服阀、安全溢流阀、流量控制阀、减压阀、调节阀、压力继电器、比例放大板、放大器,轴向柱塞泵、叶片泵、齿轮泵,伺服驱动器、伺服电机,气动元件、气动阀、气缸等),部分系列型号:
电磁阀:4WE6、4WE10、4WE16;电液阀:4WEH10H、4WEH16、4WEH25,
单向阀:S10A、S20A、Z1S、Z2S、SL10、SL20、SV10、SV20、RVP,插装阀:LC、LFA
溢流阀:DB、DBW、DBET、DBD、ZDB、Z2DB,减压阀:DR6DP、DR10DP、ZDR6、ZDR10、DR-4X、DR-5X
节流阀:Z2FS6、Z2FS10、Z2FS16、Z2FS22;调速阀:2FRM5、2FRM10、2FRM16,
平衡阀:FD12FA、FD12PA、FD12KA、FD16FA,继电器:HED80、HED40,电子单元:VT、0811
比例方向阀:4WRA、4WRAE、4WRE、4WREE、4WREEM、4WRH、4WRZ、4WRZE、4WRKE、4WRBKE、4WS2EM
高频响方向阀:4WRPH、4WRPEH、5WRP、5WRPE、4WRREH、4WRP、4WRPE、4WRP(E)H、4WRSE、4WRSEH、4WRPNH、4WRL、4WRLE、4WRVE、4WRGE、4WRL、4WRLE、4WRDE、3WRCBH,伺服系统:HAS、HNL、HCS、HNL
柱塞泵:A4VSO、A10VSO、A2FO,定量马达:A2FM,A4FM,A10FM/E, 齿轮泵:0510、AZPF,叶片泵:PV7
意大利阿托斯ATOS及迪普马DUPLOMATIC、美国Parker派克及EATON VICKERS伊顿 威格士液压、日本YUKEN油研泵阀优势现货系列(电磁阀换向阀、压力开关、柱塞泵、齿轮泵、比例阀、截止阀、开关阀等),
奥地利贝加莱B&R br-automation自动化配品配件货期短现货多(伺服驱动器、触摸屏、工控机、CPU模块、总线控制器、X20\2003\2005\2010系统中各类功能模块等)
力士乐rexroth二位四通 三位四通截止阀
博世力士乐rexroth电磁换向阀 力士乐流量阀 博世力士乐电磁阀
博世力士乐换向阀力士乐电磁阀
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