Z1S6T05-40/V力士乐叠加式单向阀，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！
单向阀是流体只能沿一个方向流通，另一方向不能通过的阀。单向阀就是止回阀 止回阀只供防止各类管路或设备上流体介质逆流的单向启闭阀。 止回阀用途广泛，有很多种类，下面说的是供水和热力常用的止回阀： 1、弹簧式：液体由下而上，依靠压力顶起弹簧控制的阀瓣，压力消失后，弹簧力将阀瓣压下，封闭液体倒流。常用于通径较小的止回阀。 2、重力式：和弹簧式相似，依靠阀瓣的自身重力封闭，防止倒流。 3、旋启式：液体在阀体内直通，依靠压力顶开一侧的旋转阀瓣，压力失去后，阀瓣依靠自重回位，反向的液体压力封闭阀瓣。 其它的单向阀（止回阀），如排污的止回阀，人防的防爆阀和液体使用的止回阀的原理是大同小异
在冶金工业的使用的各种机械和设备进行冶炼、铸锭、轧制、搬运和包装中，又称设备冶金。
冶金机械系统主要由动力系统、传动系统、执行系统、操纵及控制系统组成。
1、动力系统：即机械系统的驱动装置，是机器的动力源，如电机、液压马达等。作为冶金机械其动力源一般采用电动机。
2、执行系统：即机械的工作机构或执行机构，利用机械能来改变作业对象的性质、状态、形状与位置。如起重机的吊钩、轧机的轧辊等。
3、传动系统：在动力源与执行机构间传递运动与动力的中间环节，如减速机；其作用是改变运动形式（转速）或力（力矩）的大小。
4、操纵与控制系统：使机器的各个系统能协调地进行，一般通过人工操作实现操作功能，如离合、制动、变速等。
矿山机械是直接用于矿物开采和富选等作业的机械。包括采矿机械和选矿机械。探矿机械的工作原理和结构与开采同类矿物所用的采矿机械大多相同或相似，广义上说，探矿机械也属于矿山机械。另外，矿山作业中还应用大量的起重机、输送机、通风机和排水机械等。
破碎设备是将矿物进行破碎作业所用的机械设备。
破碎作业常按给料和排料粒度的大小分为粗碎、中碎和细碎。常用的砂石设备有颚式破碎机、反击式破碎机，冲击式破碎机，复合式破碎机，单段锤式破碎机，立式破碎机，旋回破碎机、圆锥式破碎机、辊式破碎机、双辊式破碎机、二合一破碎机、一次成型破碎机等几种。
根据破碎方式、机械的构造特征（动作原理）来划分的，大体上分为六类。
（1）鄂式破碎机（老虎口）。破碎作用是靠可动鄂板周期性地压向固定鄂板，将夹在其中的矿块压碎。
（2）圆锥破碎机。矿块处于内外两圆锥之间，外圆锥固定，内圆锥作偏心摆动，将夹在其中的矿块压碎或折断。
（3）辊式破碎机。矿块在两个相向旋转的圆辊夹缝中，主要受到连续的压碎作用，但也带有磨剥作用，齿形辊面还有劈碎作用。
（4）冲击式破碎机。矿块受到快速回转的运动部件的冲击作用而被击碎。属于这一类的又可分为：锤碎机；笼式破碎机；反击式破碎机。
（5）磨矿机。矿石在旋转的圆筒内受到磨矿介质（钢球、钢棒、砾石或矿块）的冲击与研磨作用而被粉碎。
（6）其他类型的破碎磨矿机。
Z1S6T05-40/V力士乐叠加式单向阀
力士乐REXROTH开/关阀
力士乐REXROTH截止阀
力士乐REXROTH叠加式单向阀Z1S 6
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液压泵控制系统
力士乐挖掘机液压泵控制系统有不同的配置,具有不同的控制功能。
恒功率阀和杠杆式恒功率装置
恒功率阀是二位三通阀。在弹簧力作用下，恒功率阀处于右位,下油缸压力油通过恒功率阀回油，在上油缸腔内油压和弹簧作用下油泵向大流量方向摆动。油泵压力油通过上油缸腔作用在顶杆上，顶杆顶推杠杆使杠杆绕支点摆动，推动A阀向右移动，使恒功率阀处于左位，油泵压力油通过恒功率阀经阀进入下油缸，推动其活塞杆，克服上油缸液压力并压缩弹簧使油泵向小流量方向摆动。同时由于上油缸活塞杆右移，顶.杆顶推杠杆的力臂减小，使杠杆推A阀的力下降，直至与A阀弹簧力相等，油泵摆角处于新的平衡位置。