ZS1756A,2ZS2065A 型坐式直线振动筛是我国自行设计,较先进的一种脱水分级设备。它具有结构简单,操作方便,动负荷小,工艺效果好等优点。几年来在我国各洗煤厂中广泛使用,并逐步淘汰一些老型号的筛子。我们在这两种振动筛的使用维修和制作中也发现一些问题,几年来对这些问题作了不断改进,使这类筛分设备进一步完善,收到一些成效,现作简要介绍。一、关于筛框我们在使用这类筛子时,发现筛框不到一年,有的一年半,甚至半年就断梁裂邦,这类铆接式筛框在修补时还比较困难。几年实践证明,主要原因是筛框设计强度弱,铆接工艺不严以及采用韧性差的钢材等。为此我们作了一些改进,使筛框寿命提高到三年以上。1.筛框所用的钢材,原设计是 A_5普通碳素 ZS1756A, 2ZS2065A type sit linear vibrating screen is our own design, a more advanced dewatering grading equipment. It has the advantages of simple structure, convenient operation, small dynamic load and good process effect. Over the past few years in our coal washing plant widely used, and gradually eliminate some of the older models of the sieve. We also found some problems in the use, repair and manufacture of these two shale shakers. These problems have been continuously improved in recent years. We have further improved such screening equipment and received some results. First, on the sieve box We use this type of sieve, we found that the sieve box less than a year, some one and a half, or even six months broken beam riveting, such riveting sieve frame in the repair is still more difficult. Years of practice has proved that the main reason is the screen frame design weakness, lax riveting process and the use of poor toughness of steel. To this end, we made some improvements to improve the life of the screen frame to more than three years. 1. Screen frame steel used, the original design is A_5 ordinary carbon