Hengli Petrochemical has obtained a patent for the tool used to remove vacuum pump rotors, which effectively facilitates the removal of such rotors

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Hengli Petrochemical has obtained a patent for a tool designed for removing vacuum pump rotors, which facilitates the removal process of such rotors. July 29, 2025, 14:14 · Jin. According to information from the Intellectual Property Office, Hengli Petrochemical (Dalian) Chemical Co., Ltd. has been granted a patent titled “A Tool for Removing Vacuum Pump Rotors”; the approval number is CN223160462U, with the application date being September 2024. The patent abstract indicates that this utility model relates to a tool for removing the rotor of a vacuum pump. The vacuum pump includes a pump casing, within which there is a cavity designed to hold the rotor ； The rotor is located within the said cavity ； The rotor removal tool includes: a support frame, which has two bolt holes at its bottom; the support frame is placed on top of the rotor, and bolts pass through these bolt holes before being screwed into the rotor, thereby connecting the support frame to the rotor ； The top of the support frame is connected to a hook, which is used to lift the support frame. During maintenance, the fixture for removing the vacuum pump rotor serves to secure the rotor and extract it from the vacuum pump. The use of this tooling can effectively assist in the removal of vacuum pump rotors. During maintenance, it not only optimizes the workflow for removing the rotors but also provides effective protection for them. According to Tianyancha, Hengli Petrochemical (Dalian) Chemical Co., Ltd. was established in 2016 and is located in Dalian. It is a company that is primarily engaged in the processing of petroleum, coal, and other fuels. The registered capital of the enterprise is 4,574.95 million RMB. According to the big data analysis provided by Tianyancha, Hengli Petrochemical (Dalian) Chemical Co., Ltd. has made investments in 3 companies, participated in 352 bidding projects, and holds 95 patent records. In addition, the company possesses 611 administrative licenses.