Structure for treating mechanical seal leakage of centrifugal pump

By designing an annular mounting block and a scraping mechanism, the flushing fluid is used to push the dynamic ring and stationary ring of the mechanical seal to separate, and centrifugal force is used to polish the end face, which solves the leakage problem caused by solid particle wear of the mechanical seal and improves the sealing performance and the stability of the liquid film.

CN121916205APending Publication Date: 2026-04-24DAQING HONGLEI MASCH EQUIP MFG CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DAQING HONGLEI MASCH EQUIP MFG CO LTD
Filing Date
2026-03-03
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

In the prior art, the sealing performance of mechanical seals is affected by grooves caused by wear from solid particles and impurities, leading to media leakage. Furthermore, existing external flushing solutions have limited ability to remove particles embedded in the grooves, resulting in low efficiency.

Method used

The design incorporates a ring mounting block, a flow divider, a ring rotating block, a ring inlet groove, a flow channel, a pusher, a vertical groove, a scraping mechanism, and a liquid supply mechanism. The liquid supply mechanism delivers flushing fluid to separate the dynamic and static rings of the mechanical seal. The scraping mechanism and centrifugal force are used to polish the end face, improving the continuity and stability of the liquid film.

Benefits of technology

It effectively removes impurities from the mechanical seal end face, improves sealing performance, enhances the continuity and stability of liquid film formation, strengthens the sealing effect, and solves the problem of low impurity removal efficiency in existing technologies.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121916205A_ABST
    Figure CN121916205A_ABST
Patent Text Reader

Abstract

The invention belongs to the technical field of centrifugal pump mechanical seals, and discloses a centrifugal pump mechanical seal leakage treatment structure which comprises an annular mounting block, a flow dividing cavity formed in the right side of the annular mounting block and an annular rotating block rotationally arranged on the left side of the annular mounting block. And the annular liquid inlet groove is circumferentially formed in the left side wall of the annular mounting block. Through cooperative design of an annular mounting block, a flow dividing cavity, an annular rotating block, an annular liquid inlet groove, a flowing channel, a pushing piece, a vertical groove, a scraping mechanism and a liquid supply mechanism, the continuity and stability of liquid film generation are improved, the sealing performance effect is improved, and flushing liquid is prevented from mainly acting on the surface layer of the end face; the problems that the cleaning capacity of particles embedded into the paddle-tumbler is extremely limited, the limited cleaning effect can be achieved in the washing process for a long time, the effect of removing leaked impurities is poor, and the efficiency is low are solved.
Need to check novelty before this filing date? Find Prior Art