Structure for reducing axial thrust of impeller

• Main Authors: ZHANG DIEFEI, ZHANG HUAN, LI QINGQING, TAN QINGSONG, XIANG YONG, WEN XIN, WANG TONGZHENG, XIONG TAO
• Format: Patent
• Language: Chinese; English
• Published: 06.05.2022
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model relates to the technical field of rotating machinery, in particular to a structure for reducing axial thrust of an impeller, which comprises a main shaft, a shaft sleeve, an air seal cover, a diffuser and an impeller, the impeller is fixedly connected with the main shaft, is positioned on the side surface of the main shaft and is provided with a plurality of balance holes, and the balance holes are circumferentially and uniformly distributed around the axis of the impeller. The shaft sleeve is fixedly connected with the main shaft, the shaft sleeve is arranged outside the main shaft in a sleeving manner, the shaft sleeve is arranged inside the diffuser in a penetrating manner, the shaft sleeve is provided with a balance disc, the diffuser is provided with comb teeth, the balance disc is in clearance fit with the comb teeth, and the air seal cover is fixedly connected with the diffuser, is arranged outside the shaft sleeve in a sleeving manner and is provided with an air inlet hole and an air