产品详情



JD745X多功能水泵控制阀安装在高层建筑给水系统以及其他给水系统的水泵出口处,防止介质倒流、水锤及水击现象的智能型阀门。JD745X多功能水泵控制阀兼具电动阀、逆止阀和水锤消除器三种功能,可有效地提高供水系统的安全可靠性。多功能水泵控制阀是一种新型的水力控制阀门,如下图所示.它一阀可同时替代现行水泵压水管上的电动蝶(闸)阀、单向阀和水锤消除器,并能自动实现开泵时的缓开(准软启动),停泵时的速闭/缓闭,基本上可以实现现行液控缓闭阀的功能,即两阶段关阀过程,有效地防止水锤事故的产生,但它无任何电气控制动力或外力油压系统.在阀体设计上还采用了宽阀体流线型设计,有效地降低了水流阻力。
不锈钢泵是靠其表面形成的一层极薄而坚固细密的稳定的富铬氧化膜(防护膜),防止氧原子的继续渗入、继续氧化,而获得抗锈蚀的能力。一旦有某种原因,这种薄膜遭到了不断地破坏,空气或液体中氧原子就会不断渗入或金属中铁原子不断地析离出来,形成疏松的氧化铁,金属表面也就受到不断地锈蚀。这种表面膜受到破坏的形式很多,日常生活中多见的有如下几种:不锈钢表面存积着含有其他金属元素的粉尘或异类金属颗粒的附着物,在潮湿的空气中,附着物与不锈钢间的冷凝水,将二者连成一个微电池,引发了电化学反应,保护膜受到破坏,称之谓电化学腐蚀。
一般锯硬材,或使用薄、窄锯条,齿高要小。齿高与齿距是密切相关的。在选择齿高时应同时考虑齿距。齿高与齿距的压值碾表4-3。一般近似估计齿高时,可取h二lOs(:为锯身厚度)。角度参数:前角Y:前角主要影响锯屑变形所消耗的力。前角大,下锯轻快,推料省力,木材粉碎机锯齿切削锐度良好。前角过大,当后角一定时,楔角必然减少,造成齿体强度下降,容易跑锯。通常锯软材料,锯身厚,前角宜选大。锯软材时前角可取25-35,锯硬材时前角可取15-25后角a:木材粉碎机锯齿需要后角,是为了减少后齿面与锯路底木材的摩擦。
CYZ-A防爆自吸铜叶轮汽油泵,不锈钢自吸煤油泵,耐腐蚀自吸柴油泵是根据有关技术资料经消化、吸收、改进后研制而成的新泵类产品,该自吸泵适用于石油行业、陆地油库、油罐车的理想产品,并适合于作船用货油泵、舱底泵、消防泵和压载泵及机器冷却水循环等,分别输送汽油、煤油、柴油、航煤等石油产品和海水、清水,介质温度-2℃-8℃,如输送化工液体可改用耐腐蚀机械密封。CYZ-A防爆自吸铜叶轮汽油泵,不锈钢自吸煤油泵,耐腐蚀自吸柴油泵型号意义:CYZ-A防爆自吸铜叶轮汽油泵,不锈钢自吸煤油泵,耐腐蚀自吸柴油泵产品特点:1.该泵属自吸式油泵,它具有结构简单、操作方便、运行平稳、维护容易、效率高、寿命长具有较强的自吸能力等优点。
A10VSO100:
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A10VSO10:
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A10VSO60:
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A10VSO71:
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