Large-deflection self-adaptive seal for low-speed equipment

Abstract

The invention discloses a large-deflection self-adaptive seal for low-speed equipment. The large-deflection self-adaption seal for the low-speed equipment comprises a shaft sleeve, a seal cavity, a connecting plate and a static ring and a moving ring which are arranged in a cavity body of the seal cavity; the shaft sleeve penetrates through the seal cavity, the static ring and the moving ring are arranged on the shaft sleeve in a sleeving mode, the connecting plate is fixedly connected with the shaft sleeve, and the moving ring is fixedly installed on the connecting plate; the static ring comprises a connecting end and a seal end which are connected by adopting a flexible structure, the static ring is fixedly connected with the seal cavity through the connecting end, a static ring seal ring is arranged between the seal end and the shaft sleeve, and the seal end is provided with an arc-shaped seal end face; the moving ring is provided with an arc-shaped seal end face matched with the seal end of the static ring, the static ring and the moving ring are cooperatively connected through the seal end faces, the seal end of the static ring is provided with a jacking mechanism, and the jacking mechanism applies jacking force to the seal end to enable the seal end face of the static ring and the seal end face of the moving ring to be closely matched. The seal adopts arrangement of the arc-shaped seal end faces and the flexible connecting structure and solves the leakage problem caused by rotating shaft eccentricity.

Description

technical field [0001] The invention relates to the technical field of mechanical seals, in particular to a large deflection self-adaptive seal for large shaft diameter low-speed stirring equipment. Background technique [0002] Since the mixing equipment with large shaft diameter and low speed has low requirements and control for equipment accuracy, when the equipment is working, the shaft will deflect to a certain extent during the rotation process, resulting in the commonly used dry gas seals, mechanical seals and other sealing products. It is difficult to use this type of equipment normally, and there are problems of leakage and wear of the rotating shaft during the working process of the equipment, which seriously affects the performance of the equipment and increases the maintenance and repair costs of the equipment. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned technical problems in the sealing of stirring eq...

AI Technical Summary

Problems solved by technology

[0002] Since the mixing equipment with large shaft diameter and low speed has low requirements and control for equipment accuracy, when the equipment is working, the shaft will deflect to a certain extent during the rotation process, resulting in the commonly used dry gas seals, mechanical seals and other sealing products. It is difficult to use this type of equipment normally. There are problems of leakage and shaft wear during the operation of the equipment, which seriously affects the performance of the equipment and increases the maintenance and repair costs of the equipment.

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