The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2022
Filed:
Dec. 15, 2020
Zhejiang Petrochemical Valve Co., Ltd., Wenzhou, CN;
Jingpan Su, Wenzhou, CN;
Xiheng Zhang, Wenzhou, CN;
Hongqiang Yin, Wenzhou, CN;
Huaimin Wu, Wenzhou, CN;
Hongquan Xue, Wenzhou, CN;
Longjie Yang, Wenzhou, CN;
Jia Zhao, Wenzhou, CN;
Sunli Zhang, Wenzhou, CN;
Chengshuai Yang, Wenzhou, CN;
Liaoyong Gu, Wenzhou, CN;
ZHEJIANG PETROCHEMICAL VALVE CO., LTD., Wenzhou, CN;
Abstract
A high-temperature quick-opening spherical sealing shut-off valve that includes a valve body, a valve seat, a valve cover, a valve clack, a valve rod, and a driving device for driving the valve rod to rotate. A friction-adjusting mechanism is mounted on the valve rod. The valve rod is arranged coaxially and connected to the valve clack. A gas outlet passage is formed in the valve body and the valve cover. The valve clack and valve seat are located in the path of the gas outlet passage. The valve seat is mounted in the valve body and has a first through hole communicating with the gas outlet passage. The valve clack has a second through hole corresponding to the first through hole. The gas outlet passage has three states: open when the first hole fully overlaps the second hole, half-open when the holes partially overlap, and closed when no overlap.