High-temperature gas circulating fan

Abstract

The invention discloses a high-temperature gas circulating fan which comprises a main shaft, a driving device, a wind pressure device and a sealing device, wherein one end of the main shaft is in transmission connection with the output shaft of the driving device, and the other end of the main shaft is in transmission connection with an impeller of the wind pressure device; the sealing device is positioned on the exterior of the main shaft arranged between the driving device and the wind pressure device, and the sealing device comprises a mechanical seal body arranged on the exterior of the main shaft; a cooling device is arranged on the exterior of the main shaft arranged between the wind pressure device and the sealing device, and the cooling device comprises a cannular cooling shell; the two end faces of the cannular cooling shell are respectively abutted with to an enclosure and the sealing device, the top of the cannular cooling shell is provided with a water inlet, and the bottom of the cannular cooling shell is provided with a water outlet; and water distribution sheets are arranged in the cannular cooling shell and above the main shaft. The circulating fan provided by the invention has the advantages that the cooling device is arranged, so that the heat is prevented from being transferred to the mechanical seal body by virtue of a drive shaft, the sealing effect of the mechanical seal body of the fan is ensured, and the safe operation of the fan at a high temperature state is realized.

Description

technical field [0001] The invention relates to a centrifugal fan, more specifically a high-temperature gas circulation fan, which belongs to the technical field of fan and ventilation engineering. Background technique [0002] According to the requirements of the national "Twelfth Five-Year Plan", energy-saving and environmental protection projects are carried out for coke oven high-temperature gas in large and medium-sized steelmaking plants, and coke oven high-temperature gas is used to cool down and purify the environment quality of the medium, which is a high-temperature combustion technology, energy-saving and emission-reduction key equipment. [0003] Existing high-temperature gas circulation blower is generally made up of main shaft, driving device, wind pressure device and sealing device, and driving device is generally a motor. The air pressure device includes a casing and an impeller in the casing, and the casing is provided with an air inlet and an air outlet. ...

AI Technical Summary

Problems solved by technology

[0004] Since the temperature of the coke oven high-temperature gas in the steelmaking plant can reach above 600°C, the heat of the high-temperature gas can be transferred from the impeller to the mechanical seal body through the drive shaft, which affects the sealing effect of the mechanical seal body and ultimately affects the performance of the fan.

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