Easily switchable cold slag tap manhole door

By designing a locking mechanism and a pull rod to work together on the manhole door of the slag cooler, rapid locking and unlocking are achieved, solving the problems of cumbersome operation and insufficient safety of traditional manhole doors, and improving the operational safety and efficiency of the slag cooler.

CN224718815UActive Publication Date: 2026-09-04HUBEI XINGRUI SILICON MATERIAL CO LTD
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Patent Information

Application Number
CN202521743544.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-15
Publication Date
2026-09-04
Estimated Expiration
2035-08-15

AI Technical Summary

Technical Problem

The existing manhole doors of the cold slag machine are cumbersome to operate and unsafe, which can easily lead to the leakage of high-temperature coal slag, posing a risk of personal injury. They are also difficult to close, affecting the boiler's operating efficiency.

Method used

A manhole door was designed, employing a synergistic design of a locking mechanism and a pull rod. It achieves rapid locking and unlocking by rotating a pin around a pivot, replacing the traditional multiple sets of locking screws. Combined with the stable support of the guide rail and pivot, it ensures the door closes tightly.

Benefits of technology

It significantly improves the opening and closing efficiency of manhole doors, ensures tight closure of doors in high-temperature environments, prevents coal slag leakage, reduces manual labor intensity and safety risks, and enhances the safety and efficiency of boiler operation.

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Abstract

The utility model discloses a manhole door, the manhole door's door frame side wall is equipped with the lock catch mechanism, and one end of the pull rod is fixedly connected with the side along of manhole door, the lock catch mechanism is by the base plate, the guide rail, the bayonet lock, the push board and the pivot and is composed, one side of the base plate is fixedly connected with the door frame side wall of manhole door, and a pair of guide rails are fixed on the base plate, and the pivot is also equipped between the guide rail, and the middle section of pivot is rotatably connected with the bayonet lock, and the bayonet lock rotates around the pivot. The utility model has the advantages of (1) simplifying switch operation, improving efficiency, (2) not reducing safety reliability, (3) convenient operation, reducing labor intensity.
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