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刀型闸阀的主要作用和应用范围

发布时间:2016-12-31  编辑:taikevalve 查看:

刀型闸阀的主要作用和应用范围
  Knife gate valve is a gate opening and closing parts,RAM direction of motion perpendicular to the direction of the fluid,knife gate valve can be fully open and fully closed,can not be adjusted and the throttle.
 
  There are two gate sealing surface,the most common mode of gate valve sealing surface to form two wedge,the wedge angle varies with the valve parameters,usually 50,wedge type knife gate valve can be made into a whole,called the rigid gate;gate can be made to produce micro deformation,in order to improve its process,make up the sealing surface angle deviations arising during processing,the gate is called the flexible knife gate valve is closed,the sealing surface can only rely on media pressure to seal,that media pressure will depend on the sealing surface of the ram pressure to the other side of the seat to ensure the sealing surface of the seal,which is self sealing.
 
  Most of the knife type gate valve using forced seal,that is,when the valve is closed,to rely on external forces forced the gate pressure to the valve seat to ensure the sealing surface of the seal
 
  Knife type knife type gate valve for use with a good shearing,the most suitable for slurry,powder granules,fibers and other difficult to control the fluid,are widely used in papermaking,petrochemical,mining,drainage,food and other industries.
 
  With a variety of seat options,and can be based on on-site control requirements,equipped with electric or pneumatic actuators to achieve automatic valve operation
 
  Material:cast iron,carbon steel,stainless steel,
 
  Size range:DN50~DN600,
 
  Maximum pressure:1.0MPa
 
  刀闸阀是门开闭部分,RAM的运动方向垂直于流体的方向,刀闸阀可以完全打开和完全关闭,不能调节和节流。
 
  有两个闸门密封面,最常见的闸阀密封面形式为两个楔形,楔形角随阀门参数变化,通常为50,楔形刀闸阀可以做成一个整体,称为刚性闸门;闸门可产生微变形,为了改善其工艺,弥补加工过程中产生的密封面角度偏差,闸门称为柔性刀闸阀关闭,密封面只能依靠介质压力密封,介质压力将取决于冲头压力对密封表面的另一侧的座位,以确保密封的密封表面是自密封的。
 
  大多数刀式闸阀采用强制密封,即当阀门关闭时,要依靠外力将闸门压力推向阀座,以确保密封面的密封
 
  刀型刀式闸阀适用于良好的剪切,最适用于浆料,粉粒,纤维等难以控制的流体,广泛应用于造纸,石化,矿山,排水,食品等行业。
 
  具有多种座椅选择,并可根据现场控制要求,配备电动或气动执行器,实现自动阀门操作
 
  材质:铸铁,碳钢,不锈钢,
 
  尺寸范围:DN50DN600,
 
  最大压力:1.0MPa

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