A tooling for adjusting the clearance between the rotor and cylinder wall of a circulating fan

CN224310567UActive Publication Date: 2026-06-02CHONGQING JIANFENG IND TECH SERVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHONGQING JIANFENG IND TECH SERVICE CO LTD
Filing Date
2025-07-15
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

After the circulating fan has been running for a period of time, the friction and vibration of the moving and stationary parts are too high due to the deviation of the clearance value. In addition, the corrosion of the positioning pin and the cylinder thread hole causes the rotor position to shift. It is necessary to design a repair tool to adjust the rotor position.

Method used

Design a tooling that includes a first rectangular frame, a second rectangular frame, fixing bolts, adjusting bolts, and a jack. The gap between the cylinder and the rotor is adjusted by threaded engagement and the jack. The frame structure is constructed by welding channel steel to ensure connection stability.

Benefits of technology

It achieves efficient adjustment of the rotor-cylinder wall clearance, reduces equipment wear and vibration, improves equipment stability, and is inexpensive.

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Abstract

A tooling for adjusting the clearance between the rotor and cylinder wall of a circulating fan includes a first rectangular frame and a second rectangular frame with identical structures, as well as fixing bolts, adjusting bolts, and multiple jacks. These jacks are positioned on the ground with their piston rods facing the bottom of the circulating fan's cylinder. Each rectangular frame has threaded mounting holes on two opposite sides and two threaded adjusting holes. The first and second rectangular frames are loosely fitted onto the top and bottom of the circulating fan's cylinder, respectively, and are fixed in position by the fixing bolts engaging with the threaded mounting holes, the cylinder's inlet flange, and the outlet flange. The adjusting bolts are threaded into the adjusting holes of the rectangular frames, with the extended ends of the bolts facing the side of the cylinder wall where the thickness of the cylinder wall plate is located. This assembly constitutes the tooling. This invention has a simple structure, low manufacturing cost, and can efficiently adjust the clearance between the rotor and the inner wall of the cylinder, meeting maintenance needs.
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