A sintering off-gas treatment device

By designing a sealing groove, a pressurized reflux mechanism, and a cooling system in the sintering flue gas treatment device, the problem of high-temperature aging of the switching valve sealing ring was solved, extending its service life and improving its sealing performance and reliability.

CN121206503BActive Publication Date: 2026-08-04HEBEI HANYAO ENVIRONMENTAL TECH CO LTD
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Patent Information

Application Number
CN202511466688.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-14
Publication Date
2026-08-04
Estimated Expiration
2045-10-14

AI Technical Summary

Technical Problem

In the existing technology, the sealing ring components of the switching valve are subjected to long-term high temperature heating, which leads to premature aging and failure. They cannot be effectively cooled, affecting the sealing performance and service life of the device.

Method used

A sintering flue gas treatment device was designed. By setting a sealing groove on the outside of the valve plate and gluing a sealing gasket, combined with a pressurized reflux mechanism and a cooling system, the heat exchange liquid in the sealing groove is circulated and cooled, the temperature of the sealing gasket is reduced, the sealing performance is enhanced, and a semiconductor cooler is used for further cooling.

Benefits of technology

It significantly extends the service life of the switching valve, improves sealing performance and device reliability, and reduces the maintenance cost of the cooling structure.

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Abstract

This disclosure relates to the field of industrial flue gas treatment technology. A sintering flue gas treatment device disclosed herein includes a base, a treatment box mounted on the top of the base, and connecting pipes one and two fixedly connected to the left and right sides of the bottom of the treatment box, respectively. A burner, heat exchange ceramic one, and heat exchange ceramic two are installed inside the treatment box; a switching valve is also installed on the top of the base. This device pumps the heat exchange liquid from the heat exchange box cavity into connecting pipe two via a pump and an inlet pipe. The liquid then flows back to the heat exchange box sequentially along the upper side of the sealing groove cavity, connecting pipe one, the lower side of the sealing groove cavity, connecting pipe three, return pipe, return cylinder, and return groove, forming a circulating flow of the heat exchange liquid. This design significantly reduces the temperature rise of the sealing gasket due to working heat by circulating heat exchange liquid inside the sealing gasket, effectively delaying the heat aging and failure of the sealing gasket.
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