液压缸提升热风阀芯程献振（河南省漯河市中原冶金机械制造总厂４６２３００）１前言铁厂热风炉上配备的热风阀、燃烧阀，其阀芯的提升与关闭过去是靠手动卷扬机或电动卷扬机来实现。当热风阀上盖中的密封填料过松时，会发生漏风现象，过紧时，阀芯的进出水管发生卡死不能... Hydraulic cylinder to enhance the hot air valve core Cheng Xian (Luohe City, Henan Province Zhongyuan Metallurgical Machinery Manufacturing Plant 462300) 1 Foreword Iron stove hot blast stove equipped with hot air valve, combustion valve, the valve to enhance and shut down in the past by manual winch or electric windlass to fulfill. When the seal in the hot air valve cover packing too loose, air leakage will occur, too tight, the spool out of the water pipe stuck can not ...