混凝土水泥砂浆液压电磁阀4WE6F6X/EG24N9K4 德国博世力士乐REXROTH原厂原装电磁换向阀 全新进口 正品***

电话TEL： 021-61116812  传真FAX： 021-51334670

商务QQ/MSN：1875691081    联系人：何洋  手机13524125780(微信)

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地址ADD：上海市浦东新区金豫路100号禹洲金桥国际2期2号楼907室

邮编ZIP ： 201206  公司名：上海韦米机电设备有限公司

博士力士乐是全球领 先的传动与控制专家。凭借在传动、控制及运动领域内的丰富经验，公司以力士乐为品牌，为全球80多个国家，50多万家客户提供量身定制的解决方案，是世界工业设备及工厂自动化、行走机械运用与可再生能源市场的合作伙伴。作为博世集团的全资子公司，2009年全球销售额近41亿欧元，拥有超过34200多名专业员工，其中包括中国员工2736名。 自1978年开始，博世力士乐就开始了在中国的业务，并在上海、北京、常州和西安建立了工厂。

主要涉及行业： 水利工程、海事工程、冶金、塑料机械、通用机械、压机、钻孔机、叉车、推土机、起重机、装载机、混泥土泵、挖掘机、压路机、混泥土搅拌车、机床、通用自动化、印刷与纸张处理、食品包装、木工机械、橡胶、电子和半导体、汽车、纺织工业、轻工业、钢厂、采矿业、油田、石化、风能等。

电磁阀是由电磁线圈和磁芯组成，是包含一个或几个孔的阀体。当线圈通电或断电时，磁芯的运转将导致流体通过阀体或被切断，以达到改变流体方向的目的。电磁阀的电磁部件由固定铁芯、动铁芯、线圈等部件组成；阀体部分由滑阀芯、滑阀套、弹簧底座等组成。电磁线圈被直接安装在阀体上，阀体被封闭在密封管中，构成一个简洁、紧凑的组合。

电磁阀从原理上分为三大类（即：直动式、分步直动式、先导式），而从阀瓣结构和材料上的不同与原理上的区别又分为六个分支小类（直动膜片结构、分步重片结构、先导膜式结构、直动活塞结构、分步直动活塞结构、先导活塞结构）。

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。

分布直动式电磁阀：

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。

先导式电磁阀：

原理：通电时，电磁力把先导孔打开，上腔室压力迅速下降，在关闭件周围形成上低下高的压差，流体压力推动关闭件向上移动，阀门打开；断电时，弹簧力把先导孔关闭，入口压力通过旁通孔迅速腔室在关阀件周围形成下低上高的压差，流体压力推动关闭件向下移动，关闭阀门。

电磁阀***供应型号

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