田庄洗煤厂的广大职工,针对重介质洗煤系统中介质上料管需要经常倒换和阀门磨损严重的问题,对阀门和上料管接合部分作了一些改进。改进后,使倒换泵、分流等操作大为简便,速度快,时间短,而且提高了阀门的耐磨性能和延长了使用周期。现将三通阀和方形阀门的使用情况简要介绍如下。 The majority of employees in Tianzhuang Coal Preparation Plant have made some improvements to the valve and the material feeding pipe joint in connection with the frequent switching of the medium on the medium in the heavy medium coal washing system and severe valve wear. After the improvement, the switching pump, shunt and other operations are greatly facilitated, fast and short in time, and the valve wear resistance is improved and the service life is prolonged. Now the use of three-way valves and square valves are briefly described below.