A fixing device for top-charging coke oven and a flat coal hole leakage prevention structure

By installing a fixing device and a high-temperature resistant baffle plate in the top-loading coke oven, the problem of unstable connection between the small furnace door body and the furnace door bottom plate was solved, which improved the stability and sealing of the sliding plate and the web plate, and reduced flue gas leakage and maintenance costs.

CN224377957UActive Publication Date: 2026-06-19YIYANG HONGXING MASCH EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
YIYANG HONGXING MASCH EQUIP CO LTD
Filing Date
2025-05-14
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The existing top-loading coke ovens have small furnace door bodies that are not directly connected to the furnace door bottom plate, which makes the sliding plate and web plate prone to deformation, the blade edge damaged, and gaps at the coal leveling hole connection, resulting in flue gas leakage and high maintenance costs.

Method used

By setting a fixing device, especially an L-shaped fixing plate, between the small furnace door body and the furnace door bottom plate, and integrating it with the top brick groove, and using a high-temperature resistant U-shaped fire baffle plate to replace the top brick groove, the connection stability and sealing are ensured.

Benefits of technology

It effectively prevents the plate and web from bending and deforming, reduces flue gas leakage, improves sealing, reduces maintenance costs, and ensures production stability and continuity.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224377957U_ABST
    Figure CN224377957U_ABST
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Abstract

This utility model discloses a fixing device and a leak-proof structure for the coal leveling hole of a top-loading coke oven, comprising: a small furnace door body, which is disposed between the furnace door bottom plates on the upper part of the furnace door on the machine side; a sliding plate is provided on the inner side of the furnace door bottom plate, and a web plate is provided close to the sliding plate, with blades welded around the perimeter of the web plate; fixing devices are respectively provided on the lower and upper furnace door bottom plates, and the fixing devices connect the small furnace door body and the furnace door bottom plate respectively. This effectively prevents the sliding plate and web plate from bending and deforming due to the impact force when opening and closing the small furnace door cover, and prevents the blades on the web plate from deforming to both sides, avoiding damage to the web plate and blades. It also prevents the flue gas in the furnace from overflowing from the bottom of the small furnace door flange after coal charging and pressurization, reducing the frequent occurrence of smoke and fire leaks, and improving the stability and sealing of the overall structure of the small furnace door body under working conditions.
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