Water-saving mechanical seal device

Abstract

Disclosed is a water-saving mechanical seal device. A static ring is arranged in a static ring seat, a static ring seal ring is arranged on the static ring, a moving ring assembly is arranged at the corresponding position of the inner side of the static ring, a limiting plate is arranged on the static ring, and a gland pad is arranged on the outer side on the static ring seat; an integration structure is adopted, mounting is facilitated, and meanwhile the compression amount of a main seal of a medium side is adjusted; and a pin is riveted on a transmission ring of the moving ring assembly, and the guide and anti-rotation effects are achieved. A push ring used in a normal mechanical seal is not needed, transmission resistance is reduced, the transmission efficiency is improved, the axial mounting size of the mechanical seal is reduced, following performance of the mechanical seal is better, and the compensation performance is more excellent. A protection cover is formed on the outer circle of the transmission ring, a moving ring and a spring in the moving ring assembly are included inwards, and the phenomenon that overmuch dust in atmosphere falls in the moving ring assembly, the spring is blocked and lacks elasticity, or dust is adhered to a shaft sleeve, slippage of a moving ring O-shaped ring on the shaft sleeve is affected, and consequently, a water-saving mechanical seal fails is avoided.

Description

technical field [0001] The invention relates to a mechanical sealing device. Background technique [0002] High-temperature pumps in the petrochemical industry are equipped with cooling water flushing pipelines, and a water retaining cover is installed on the gland of the mechanical seal to prevent cooling water from leaking. Because the water retaining cover is basically made of rubber material, it is not resistant to wear, and the water retaining cover and the shaft sleeve are generally an interference fit. After the equipment has been in operation for a period of time, the radial gap between the water retaining cover and the shaft sleeve becomes larger due to wear, resulting in an increase in the cooling water leakage. Leaking cooling water is often thrown along the axis of rotation, spraying everywhere. Especially for the leakage of some medium-side mechanical seals, the cooling water will be polluted, and the cooling water will leak into the atmosphere, causing seriou...

AI Technical Summary

Problems solved by technology

When installing, because the interference is too large, the inner edge of the water retaining cover is often scratched by the shaft sleeve, and leakage occurs immediately after the cooling water is introduced.

Images