Vertical spiral self-correcting stirring grinding device

By introducing a tilting pad self-correction and free end vibration reduction and anti-deviation system into the vertical spiral stirred mill, the problem of free end swaying of the stirring shaft was solved, the stable operation and centering of the stirring shaft were achieved, the swaying was prevented from aggravating, and the continuity of production was ensured.

CN119869687BActive Publication Date: 2026-06-30TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Filing Date
2025-03-13
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Vertical spiral stirred mill devices are prone to wobbling at the free end of the stirring shaft, which can lead to breakage or misalignment of connecting bearings, affecting production operations. In particular, the impact and friction caused by slurry input during startup and continuous grinding exacerbate the wobbling.

Method used

The system employs a tilting pad self-correcting system and a free-end vibration damping and anti-deviation system. It automatically corrects the sway of the agitator shaft through wedge-shaped oil film pressure, and uses buffer bushings and positioning rods to buffer and dampen vibration, preventing the sway from worsening.

Benefits of technology

It improves the alignment of the stirring shaft, avoids local stress concentration, achieves stable operation of the stirring shaft, prevents increased sway, and ensures continuous production.

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Abstract

A vertical spiral self-correcting stirred mill device, belonging to the technical field of grinding equipment, includes a drive motor, a tilting pad self-correcting system, a free-end vibration damping and anti-deviation system, a stirring system, a support system, and a circulation system. By installing a tilting pad self-correcting system at the top of the cylinder, the tilting pad and the stirring shaft automatically form a converging wedge-shaped gap during the rotation of the stirring shaft. The wedge-shaped oil film pressure generated inside forces the stirring shaft back to its initial position. A spiral return oil line is formed on the inner surface of the pad, ensuring the stability of the wedge-shaped oil film and achieving automatic correction of the stirring shaft. A vibration damping and anti-deviation system is designed at the free end, with internal buffer bushings and positioning rods to dampen and prevent the free end of the main shaft from swaying. Through the coordinated operation of the tilting pad self-correcting system and the free-end vibration damping and anti-deviation system, the centering of the free end of the stirring shaft is ensured, and the vibration transmitted to the upper end of the stirring shaft is automatically buffered and adjusted, preventing the sway from worsening and achieving vertical positioning and self-correction of the stirring shaft.
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