Patents by Inventor Weihui Zuo

Weihui Zuo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High-pressure self-sealing butterfly valve
    Patent number: 11773983
    Abstract: A high-pressure self-sealing butterfly valve, which comprises a valve body and a valve shaft, wherein a flow channel and a butterfly plate are arranged in the valve body, a pure metal sealing ring and a pure metal valve seat are sequentially arranged at a portion, on the outer side of the butterfly plate, of the flow channel, a piston cavity is further formed in a flow direction end face of the pure metal valve seat, and an upper valve shaft and a lower valve shaft are arranged at the upper end and the lower end of the valve shaft respectively; an upper end cover assembly and an upper self-sealing assembly are arranged between the end part of the upper valve shaft and the valve body, a lower sealing bottom cover and a lower self-sealing assembly are arranged between the end part of the lower valve shaft and the valve body.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: October 3, 2023
    Assignee: Dongbao Valve Co., Ltd.
    Inventors: Yu Liu, Jiawei Chu, Haizhang Zhang, Shize Gu, Jiangtao Liu, Yuanhui Luo, Yong Zhang, Weihui Zuo, Weiguang Shen
  • HIGH-PRESSURE SELF-SEALING BUTTERFLY VALVE
    Publication number: 20230124873
    Abstract: A high-pressure self-sealing butterfly valve, which comprises a valve body and a valve shaft, wherein a flow channel and a butterfly plate are arranged in the valve body, a pure metal sealing ring and a pure metal valve seat are sequentially arranged at a portion, on the outer side of the butterfly plate, of the flow channel, a piston cavity is further formed in a flow direction end face of the pure metal valve seat, and an upper valve shaft and a lower valve shaft are arranged at the upper end and the lower end of the valve shaft respectively; an upper end cover assembly and an upper self-sealing assembly are arranged between the end part of the upper valve shaft and the valve body, a lower sealing bottom cover and a lower self-sealing assembly are arranged between the end part of the lower valve shaft and the valve body.
    Type: Application
    Filed: June 7, 2022
    Publication date: April 20, 2023
    Inventors: Yu Liu, Jiawei Chu, Haizhang Zhang, Shize Gu, Jiangtao Liu, Yuanhui Luo, Yong Zhang, Weihui Zuo, Weiguang Shen