使用说明书 环形防喷器(D 型) 河北华北石油荣盛机械制造有限公司 目录 1. 用途 ......................................................................................................................................... 1 2. 产品规格及技术参数 ................................................................................................................ 1 2 .1 . 环形防喷器型号说明 ........................................................................................................ 1 2 .2 . 技术参数 .......................................................................................................................... 3 3. 工作原理 .................................................................................................................................. 8 4. 结构特点 .................................................................................................................................. 9 4 .1 . 结构简单可靠 ................................................................................................................... 9 4 .2 . 耐磨圈结构 ...................................................................................................................... 9 4 .3 . 唇形密封圈结构 ............................................................................................................... 9 4 .4 . 抗硫化氢性能 ................................................................................................................... 9 4 .5 . 球形胶芯 .......................................................................................................................... 9 5. 操作与维护 ............................................................................................................................ 10 5 .1 . 安装 ............................................................................................................................... 1 0 5 .2 . 强行起下钻操作 .....