力士乐防爆电磁球阀R901290869
力士乐防爆电磁球阀R901290869 M-3SEW6C37/420MG24N9Z2/B08VSO865,武汉百士自动化设备有限公司供应产品,原厂原装,质量保障,假一罚十,价格优惠;移动电话:15307180902,商务QQ:980227448,传真:027-87680708-608,联系人:雷青;欢迎新老客户咨询购买!
液压电磁球阀,特别适用于高压无泄露的保压回路中作为液压插装阀的先导阀设备。它是由阀体的侧面设有阀进油口和阀回油口与阀工作口,推杆与复位弹簧装置在螺丝堵内,顶杆套套置在推杆上,阀芯一端套置在电磁铁顶杆上,电磁铁顶杆前端与阀芯中间孔的底部设置钢球,阀芯一端紧靠顶杆套,支座两侧设置阀座,阀座两侧设置花垫,电磁铁旋入阀体的另一端,电磁铁与导向套的中间设置压垫,通道一端连接阀进油口,通道另一端连接导向套内,螺丝堵上套置密封圈,导向套上套置密封圈。效果是无杠杆结构,结构简单、工作可靠,无泄露,保压性能高,无卡紧现象,使用寿命长,用于高压无泄露保压回路中作为液压插装阀的先导阀设备。
力士乐防爆电磁球阀R901290869 M-3SEW6C37/420MG24N9Z2/B08VSO865
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R900988490 M-3SEW6C37/420MG96N4K4
2.溢流阀常见故障及排除
溢流阀在使用中,常见的故障有噪声、振动、阀芯径向卡紧和调压失灵等。
液压装置中容易产生噪声的元件一般认为是泵和阀,阀中又以溢流阀和电磁换向阀等为主。产生噪声的因素很多。溢流阀的噪声有流速声和机械声二种。流速声中主要由油液振动、空穴以及液压冲击等原因产生的噪声。机械声中主要由.阀中零件的撞击和磨擦等原因产生的噪声。
先导型溢流阀的导阀部分是一个易振部位如图3所示。在高压情况下溢流时,导阀的轴向开口很小,仅0.003~0.006厘米。过流面积很小,流速很高,可达200米/秒,易引起压力分布不均匀,使锥阀径向力不平衡而产生振动。另外锥阀和锥阀座加工时产生的椭圆度、导阀口的脏物粘住及调压弹簧变形等,也会引起锥阀的振动。所以一般认为导阀是发生噪声的振源部位。由于有弹性元件(弹簧)和运动质量(锥阀)的存在,构成了一个产生振荡的条件,而导阀前腔又起了一个共振腔的作用,所以锥阀发生振动后易引起整个阀的共振而发出噪声,发生噪声时一般多伴随有剧烈的压力跳动。