Sealed drainage structure of hydrogen circulating pump of fuel cell

• Main Authors: LI HOULIANG, FAN LI, JIANG QIAN, DING WEIWEI, DAI CHANGJU, SHI FAJIA
• Format: Patent
• Language: Chinese; English
• Published: 04.11.2022
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention belongs to a sealed drainage structure of a hydrogen circulating pump of a fuel cell in the technical field of hydrogen fuel automobile parts. A water throwing groove (9) is formed in the combination position of an impeller root (16) and an impeller body (17) of an impeller (7) of the sealing drainage structure of the fuel cell hydrogen circulating pump, a horn mouth part (10) is arranged at the position, right facing a pump body (1), of the water throwing groove (9), a piston ring (12) in a mounting groove (18) of the impeller root (16) is attached to the inner wall of a sealing ring cavity (19) of the pump body (1), and a drainage port (15) is formed in the position, close to a gas cavity bottom (20), of a cover plate (2). According to the sealed drainage structure of the hydrogen circulating pump of the fuel cell, water can be prevented from entering a bearing and a motor in the working process of the hydrogen circulating pump, the bearing and the motor are prevented from being rusted and dam