Mechanical sealing device with self-stirring function for desulfurization circulating pump

Abstract

The invention discloses a mechanical sealing device with a self-stirring function for a desulfurization circulating pump. The mechanical sealing device comprises an end cover, a rotating seat shaft sleeve and a rotating seat, wherein a dynamic sealing ring is mounted in the rotating seat, and a rotating ring anti-rotating pin is mounted on the rotating seat in an interference mode;, and a static ring anti-rotating pin mounting hole with the depth of larger than the effective length of the anti-rotating pin is formed in the end cover and corresponds to the static ring anti-rotating pin; a static sealing ring is mounted in the end cover, a push ring is arranged on the outer side of the end cover, the push ring is mounted on the end cover through an elastic pre-pressing connecting assembly, and the push ring has a movement trend in the axial direction under the action of the elastic pre-pressing connecting assembly, so that the static sealing ring is tightly attached to the dynamic sealing ring; and a plurality of stirring teeth are arranged on the outer circumference of the rotating seat. According to the technical scheme, the mechanical sealing device solves the problems of bubble accumulation and poor medium flowing between a rear protective plate and an impeller, heat generated by rotating friction of a mechanical seal can be taken away in time, and the service life of the mechanical seal is prolonged.

Description

technical field [0001] The invention belongs to the technical field of mechanical seals, in particular to a mechanical seal device with a self-stirring function for a desulfurization circulating pump. Background technique [0002] The rapid increase of temperature during mechanical seal operation will cause seal failure and leakage, and the mechanical seal does not have a self-cooling system, so external cooling is required to ensure its service life. At present, the cooling of mechanical seals is mainly external flushing water, but due to various reasons, the user does not have flushing conditions on site, so they can only rely on medium cooling, which greatly shortens the service life of mechanical seals. [0003] For example, in a desulfurization circulating pump, the outer end of the mechanical seal is connected to the rear guard plate of the pump, the inner end is installed on the pump shaft, the seal side is connected to the impeller hub, the rear guard plate is connec...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a mechanical seal device that solves the problem of poor medium flow between the rear guard plate and the impeller, avoids the accumulation of air bubbles in the low-pressure area, and at the same time can take away the rotational friction of the mechanical seal in time Mechanical seal device with self-stirring function for desulfurization circulation pump of generated heat

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