Extension bar direct -burried gate valve

• Main Authors: XUE HONGQUAN, WANG ZHONGYUAN, HUANG MEILIN, LI HUAGUI, WU HUAIMIN, XIANG GUANGWU, LI YONGXI, WANG ZHONGMIAO, JIN HU
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2017
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model provides an extension bar direct -burried gate valve, highly adjusts the extension bar direct -burried gate valve height through what add long support, the utility model discloses set up O shape sealing washer on adding long support and valve gap and the installation face with long support and gland packing to installation face is corroded by the foreign matter, will seal to set up on the gland packing, and the sealing bevel and the valve rod of overlayed surface processing form to fall sealed the cooperation within a definite time, has the sealed easy processing on the gland packing, also can shorten with filler complex valve rod polished rod length, has reduced the advantages such as the processing degree of difficulty of valve rod. 种加长杆直埋闸阀，通过加长支架的高度来调整加长杆直埋闸阀高度，本实用新型在加长支架与阀盖以及加长支架与填料箱的安装面上设置O形密封圈，以免安装面受异物侵蚀，将倒密封设置在填料箱上，堆焊工艺加工的倒密封斜面与阀杆间形成倒密封配合，具有填料箱上的倒密封容易加工，与填料配合的阀杆光杆长度也可以缩短，减小了阀杆的加工难度等优点。