堆料机力士乐电磁阀4WE6J62/EG24N9K4，上海韦米机电设备有限公司主营销售产品，原厂原装，质量保障，销售热线：13524123009，在线QQ：2896079243，传真：021-51334670；联系人：雷青。热诚欢迎新老客户咨询购买！
电磁阀选型首先应该依次遵循安全性，可靠性，适用性，经济性四大原则，其次是根据六个方面的现场工况（即管道参数、流体参数、压力参数、电气参数、动作方式、特殊要求进行选择）。
选型依据：
1、根据管道参数选择电磁阀的：通径规格（即DN）、接口方式
1）按照现场管道内径尺寸或流量要求来确定通径（DN）尺寸；
2）接口方式，一般>DN50要选择法兰接口，≤DN50则可根据用户需要自由选择。
2、根据流体参数选择电磁阀的：材质、温度组
1）腐蚀性流体：宜选用耐腐蚀电磁阀和全不锈钢；食用超净流体：宜选用食品级不锈钢材质电磁阀；
2）高温流体：要选择采用耐高温的电工材料和密封材料制造的电磁阀，而且要选择活塞式结构类型的；
3）流体状态：大至有气态，液态或混合状态，特别是口径大于DN25时一定要区分开来；
4）流体粘度：通常在50cSt以下可任意选择，若超过此值，则要选用高粘度电磁阀。
3、根据压力参数选择电磁阀的：原理和结构品种
1）公称压力：这个参数与其它通用阀门的含义是一样的，是根据管道公称压力来定；
2）工作压力：如果工作压力低则必须选用直动或分步直动式原理；低工作压差在0.04Mpa以上时直动式、分步直动式、先导式均可选用。
4、电气选择：电压规格应尽量优先选用AC220V、DC24较为方便。
5、根据持续工作时间长短来选择：常闭、常开、或可持续通电
1）当电磁阀需要长时间开启，并且持续的时间多于关闭的时间应选 用常开型；
2）要是开启的时间短或开和关的时间不多时，则选常闭型；
3）但是有些用于安全保护的工况，如炉、窑火焰监测，则不能选常开的，应选可长期通电型。
6、根据环境要求选择辅助功能：防爆、止回、手动、防水雾、水淋、潜水。
耙式堆料机又名链式耙，是一种既能堆料又能取料的设备，主要用于侧面堆料。有些链耙还能进行反转，即堆料时的回转方向与取料时相反，物料通过耙杆中的开孔送往下股链。耙式堆料机通过链式刮板中安装的堆料皮带和刮板联合作业，大大的提高了堆料能力。
顶部堆料的天桥皮带堆料机用于预均化堆厂设在厂房内的情况，通过厂房的屋顶将堆场进料主皮带机接到屋架上，与屋架上的天桥皮带机相连接。该堆料机所采用的设备较简单，只要在天桥皮带机上装一台S型皮带卸料车，就可以直接从天桥皮带上进行堆料。但是它只能作人字形或圆锥形料，如要采用波浪形堆料，就会使堆料设备结构复杂。它的另一个缺点是物料落差较大。因此，这种设备在水泥厂中较少采用。
回转式悬臂皮带堆料机是预均化堆场中采用泛的侧面堆料的堆料机。它主要由两部分组成：一是连接在堆场进料主皮带机上的S型皮带卸料小车，其作用就是通过进料皮带的S形转折，将物料送到堆料皮带机上；二是由此横向伸到料堆上方的悬臂堆料皮带机。悬臂堆料皮带机可以是固定的，也可以是绕着中心轴转动的回转式悬臂皮带堆料机，其回转运动是通过电动机带动，能进行360回转。
自动控制是指堆料机实现无人控制，通过监测系统监测堆料机工作的状态。例如：堆料机堆矿粉的工艺操作控制，都应在特定的系统操控下实现自动控制。操作人员坐在控制室，可以通过电脑显示屏的画面切换，了解堆料机的各种参数、大车的位置、辅助系统等各部件、各系统的运行情况；设定堆料机的运行参数，并通过自动系统实时了解堆料机的运行状况和故障原因，并且能够自动记录故障的信息等。
堆料机力士乐电磁阀4WE6J62/EG24N9K4
德国力士乐REXROTH电磁阀订货号和型号：
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液压系统的组成及其作用
一个完整的液压系统由五个部分组成，即动力元件、执行元件、控制元件、辅助元件（附件）和液压油。
动力元件的作用是将原动机的机械能转换成液体的压力能，指液压系统中的油泵，它向整个液压系统提供动力。液压泵的结构形式一般有齿轮泵、叶片泵和柱塞泵。
执行元件(如液压缸和液压马达)的作用是将液体的压力能转换为机械能，驱动负载作直线往复运动或回转运动。
控制元件(即各种液压阀)在液压系统中控制和调节液体的压力、流量和方向。根据控制功能的不同，液压阀可分为村力控制阀、流量控制阀和方向控制阀。压力控制阀又分为益流阀(安全阀)、减压阀、顺序阀、压力继电器等；流量控制阀包括节流阀、调整阀、分流集流阀等；方向控制阀包括单向阀、液控单向阀、梭阀、换向阀等。根据控制方式不同，液压阀可分为开关式控制阀、定值控制阀和比例控制阀。
辅助元件包括油箱、滤油器、油管及管接头、密封圈、快换接头、高压球阀、胶管总成、测压接头、压力表、油位油温计等。
液压油是液压系统中传递能量的工作介质，有各种矿物油、乳化液和合成型液压油等几大类。
力士乐REXROTH液压元件应用行业：注塑机、吹塑机、橡胶和发泡机、陶瓷压机、同步折弯机(折板机),、剪板机(剪床）、冲切/步冲、金属压力机、弯曲/锯床、机床、食品机械、皮革/鞋机、木材/造纸机械、钢铁业/铸造、压铸机/挤压机、电厂、生态能源（风能-水力-太阳能）设备、油和天然气工业设备、混凝土泵、路机、钻井/开采设备、起重机、升降机/叉车、推土机、道路，隧道，水坝工程设备、压缩机、街道维修设备、模拟器/娱乐设备、卡车、铁路工程设备、航空工业设备、船舶/航海工业设备、打谷机/喷洒机、拖拉机/收割机。
