目前在砂处理系统中使用的各式各样的推拉式与回转式闸板阀都存在一个共同的缺陷,即在闸板阀上下段之间的夹缝中常常存有一些砂粒,使得闸板推拉阻力增大,推拉困难,闸板等零件磨损加剧。当集砂多时,导致闸板关闭不严密;当物料流动性好时,漏料现象比较严重。为了克服上述缺陷,笔者在闸板阀的结构 A variety of push-pull and rotary gate valves currently used in sand processing systems have a common drawback that there is often some sand in the nip between the upper and lower sections of the gate valve that allows the gate to be pushed Resistance increases, pushing and pulling difficulties, rattan and other parts wear and tear worse. When the sand is collected for a long time, the shutters are not closed properly. When the material flow is good, the material leakage is rather serious. In order to overcome the above defects, I am in the gate valve structure