Coke oven gas fan with high transmission shaft sealability

Abstract

The invention relates to a coke oven gas fan with high transmission shaft sealability, which consists of a motor group, a transmission group, an impeller and a shell, wherein a transmission shaft of the transmission group is coaxially sleeved with an outer sealing sleeve; an inner sealing sleeve is coaxially sleeved between the outer sealing sleeve and the transmission shaft; and a sealing ring isembedded between the inner sealing sleeve and the outer sealing sleeve. The coke oven gas fan has the following innovative points that: a spacer sleeve embedded into a ring groove formed on the backend face of a wheel disk of the impeller is extended and arranged at the front end of the outer sealing sleeve; and the peripheral wall of the spacer sleeve positioned outside the end face of the wheel disk is provided with a radial stream guidance ring groove. The coke oven gas fan has a scientific and reasonable structural design; by adopting a special double-layer sealing sleeve structure, thecoke oven gas fan ensures that the fan transmission group arranged on one side of a gas motor shell has better sealing effect, and effectively prevents the seepages of the coal tar and the coal gas inthe shell at the fan transmission shaft, thereby keeping the long-term high-efficiency stable running of the fan, and simultaneously maintaining the cleanness and sanitation for the production environment.

Description

technical field [0001] The invention relates to a coke oven gas fan, in particular to a coke oven gas fan with high transmission shaft sealing performance. Background technique [0002] The oil and gas mixture coming out of the coke oven is called raw coal gas, which is collected by the coke oven gas fan and processed for separation and purification. The coke oven gas fan is mainly composed of a casing, an impeller, a transmission group and a motor. The raw coal gas is transported by rotating the impeller installed on the transmission group inside the casing. Since the part of the transmission group is in contact with the atmosphere outside the casing, the part equipped with the impeller is in contact with the raw coal gas inside the casing. The part of the transmission shaft between the inside and outside of the housing has a high degree of sealing. An outer sealing sleeve fixed to the casing is coaxially sleeved on the transmission shaft, and an inner sealing sleeve is a...

AI Technical Summary

Problems solved by technology

However, the sealing effect of the existing transmission shaft sealing structure is not good

During the production process, the coal tar near the inner wall of the casing will still accumulate on the drive shaft inside the casing, and gradually leak from between the drive shaft and the casing, which not only affects the transmission performance of the fan drive shaft, but also pollutes the working environment

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