Multi-stage combined rotating shaft sealing device with self-adaptive centering function

• Main Authors: XU JIE, DU RUNPING, SONG XIAOFEI, DONG QIANG, ZHANG YANJUN, ZHU ZHENYU, ZHANG HAN, YANG YANG
• Format: Patent
• Language: Chinese; English
• Published: 09.07.2024
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

A multistage combined rotating shaft sealing device capable of self-adaptive centering relates to the technical field of rotating shaft sealing, and comprises a fixed end and a sliding end which are connected to two ends of a rotating shaft, and both the fixed end and the sliding end are connected between an equipment shell and the rotating shaft; the sliding end comprises a pre-sealing structure, an expansion joint, a multi-stage combined sealing structure and a self-supporting bearing assembly which are sequentially connected along the axis of the rotating shaft, the rotating shaft is sleeved with the pre-sealing structure, the expansion joint, the multi-stage combined sealing structure and the self-supporting bearing assembly, and a shaft sleeve is fixed outside the rotating shaft. The self-supporting bearing assembly comprises a self-aligning roller bearing and a positioning shell, an inner ring of the self-aligning roller bearing is connected to the shaft sleeve, an outer ring of the self-aligning roller