我支队碎石机的防尘工作,在接受兄弟部队经验的基础上加以改进,取得了一定的效果。但由于我们缺乏测定器材和测定技术,故仅能将我们所得到的一点粗浅体会介绍出来,供作参考,以便进一步改进。(一)碎石机作业时粉尘产生概况:碎石作业包括碎石与筛石两个工序。两工序是連贯进行的:块石由入口进人机槽内,压成碎石,由碎石出口流出。其下架以斜架之木槽,作为滑板.碎石经木槽下滑而入筛内。筛过后分成三种规格連同石粉石渣均落在筛底。而后专人装筐倾倒之。因此,石粉及石渣随着碎石一直经过各个工作部位,粉尘到处飞扬。工作人员工作一刻钟后,全身都是灰尘,虽戴有口罩,但吸入粉尘数量仍然是相当惊人的。为了便于比较,我们用两种办法,粗略地测定防尘效果: The dust prevention work of our branch crusher has been improved on the basis of the experience of the Brothers Force and achieved some results. However, due to the lack of measurement equipment and measurement technology, we can only introduce some of the superficial experiences we have obtained for reference for further improvement. (A) Overview of dust generated when crushing machine operation: gravel operation, including gravel and sieve two processes. The two procedures are coherent: the rock enters the trough from the entrance, crushed into gravel, and flows out from the gravel exit. Its shelves with inclined rack of wooden groove, as a skateboard. Gravel through the wooden slot down and into the sieve. After screening into three kinds of specifications together with the gravel slag are at the end of the sieve. And then put someone in a basket dumping. Therefore, the powder and gravel along with the gravel has been through the various parts of work, dust flying everywhere. After a quarter of an hour’s work, staff members are dusty, wearing masks, but the amount of dust inhalation is still quite impressive. In order to facilitate comparison, we use two methods to roughly measure the dust effect: