Mechanical sealing device

Abstract

The invention provides a mechanical sealing device, and belongs to the technical field of sealing systems. The device solves the technical problems that in the case of an existing mechanical sealing device, a spring is poor in automatic compensation capability and short in service life. The mechanical sealing device comprises a rotary shaft, a corrugated pipe and a movable ring, wherein the corrugated pipe and the movable ring are arranged on the rotary shaft, a spring seat is arranged on the corrugated pipe, first annular grooves are formed in the spring seat, first springs are located in thefirst annular grooves, two symmetrical guide cylinders with accommodating cavities are arranged on the spring seat in the axial direction, guide rods which penetrate through the guide cylinders and the spring seat and are connected with the spring seat are arranged in the accommodating cavities, fixing shafts are transversely arranged on the guide rods, second springs are arranged in the accommodating cavities, the second springs are arranged on the guide rods in a sleeving mode, blind holes are axially formed in the front end surface of the movable ring, and the rear ends of the guide rods are fixed in the blind holes. The second springs help the first spring to be rapidly restored under the compression condition, so that the automatic compensation capability of the first spring is relatively high.

Description

technical field [0001] The invention belongs to the technical field of sealing systems, and relates to a mechanical sealing device, in particular to a mechanical sealing device suitable for complex environments such as papermaking, sugar making, and sewage treatment. Background technique [0002] The mechanical seal device is a shaft seal device that relies on a pair or several pairs of end faces that are perpendicular to the shaft to slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, and is matched with auxiliary seals to achieve leakage prevention. Compared with other types of sealing devices, it has the advantages of high reliability, long service life, good mechanical friction, and wide application range, so it is widely used in various fields of life. [0003] The existing mechanical seal device includes a static ring assembly and a moving ring assembly. The static ring assembly includ...

AI Technical Summary

Problems solved by technology

[0004] The mechanical seal with the above structure still has the following disadvantages. Due to the relatively loose structure between the spring seat, the moving ring seat, the spring and the bellows, and the long length of the spring, the automatic compensation ability of the spring is poor, namely The axial recovery ability of the spring is poor. Over time, the spring is prone to failure, so that the bellows cannot be tightly attached to the moving ring and drive the moving ring to rotate.

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