US 12,085,192 B2
Straight-stroke no-material-loss high-temperature normal-pressure filler sealing structure
Yushan Ma, Wuzhong (CN); Haixia Su, Wuzhong (CN); Zhandong Chang, Wuzhong (CN); Zhiyun Feng, Wuzhong (CN); and Runhai Hou, Wuzhong (CN)
Assigned to WUZHONG INSTRUMENT CO., LTD., Wuzhong (CN)
Filed by WUZHONG INSTRUMENT CO., LTD., Ningxia (CN)
Filed on Apr. 20, 2023, as Appl. No. 18/304,317.
Application 18/304,317 is a continuation in part of application No. PCT/CN2021/115022, filed on Aug. 27, 2021.
Claims priority of application No. 202011127753.0 (CN), filed on Oct. 20, 2020.
Prior Publication US 2023/0250893 A1, Aug. 10, 2023
Int. Cl. F16K 41/04 (2006.01); F16J 15/00 (2006.01); F16J 15/18 (2006.01); F16K 37/00 (2006.01)
CPC F16K 41/04 (2013.01) [F16J 15/002 (2013.01); F16J 15/18 (2013.01); F16K 37/0083 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A straight-stroke no-material-loss high-temperature normal-pressure filler sealing structure, comprising:
an upper valve cover with an accommodation cavity;
a valve stem, passing through the accommodation cavity of the upper valve cover;
a filler component, located in the accommodation cavity and sleeved on the valve stem; and
a filler gland sleeved on the valve stem, whose bottom is inserted into an opening of the accommodation cavity; wherein
the filler component includes a first scraper ring, a first primary-secondary filler, a support ring, a second primary-secondary filler, and a second scraper ring which are sleeved on the valve stem in succession, and the first scraper ring and the second scraper ring are arranged symmetrically;
the first scraper ring includes metal scrapers in an up-down arrangement, and a graphite sealing ring located between the metal scrapers; a bottom of an inner ring of the metal scraper located below is provided with an arc angle, and an annular storage groove is arranged upward at the bottom of the inner ring of the metal scraper.