Vertically-mounted drainage shaft seal mechanism and centrifugal fan

Abstract

The invention discloses a vertically-mounted drainage shaft seal mechanism and a centrifugal fan. The vertically-mounted drainage shaft seal mechanism comprises a shaft seal, a water retaining ring, a fixing support arranged at the outer end of the shaft seal, an oil seal arranged between the fixing support and the water retaining ring, a sealing bush arranged at the outer end of the fixing support and a water throwing ring arranged on the sealing bush, and the oil seal is covered with the water throwing ring. On the basis of an original shaft seal, the shaft seal drainage mechanism is additionally arranged. The oil seal and the fixing support are added to prevent water from entering the shaft seal. In addition, the sealing bush and the water throwing ring are additionally arranged, so that the water is further prevented. An outer ring is additionally arranged outside the shaft seal to throw the water, an inner ring is additionally arranged to isolate the water, a rubber pad is laid between the outer ring and the inner ring to prevent corrosion caused by water gathering at the position, an outer drainage pipe is arranged in the ring of the rubber pad to drain water, and an inner drainage pipe is arranged between the inner ring and the shaft seal to drain a small amount of accumulated water entering the position. According to the mechanism, the shaft seal and a motor can be effectively protected from being corroded through multiple structures.

Description

technical field [0001] The invention relates to the field of fans, in particular to a vertically installed drainage shaft seal mechanism and a centrifugal fan. Background technique [0002] The direct-connected vertically installed marine centrifugal fan contains liquid medium, which is corrosive. In order to prevent the liquid medium in the fan from leaking and damaging the motor, it is equipped with a carbon ring shaft seal. The carbon ring shaft seal is set on the output shaft of the motor. . Since the carbon ring shaft seal is not 100% sealed, the corrosive medium will damage the carbon ring shaft seal and then damage the motor. [0003] Therefore, there are defects in the prior art and need to be improved. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a vertically installed drainage shaft seal mechanism and a centrifugal fan. [0005] The technical solution of the present inventi...

AI Technical Summary

Problems solved by technology

Since the carbon ring shaft seal is not 100% sealed, the corrosive medium will damage the carbon ring shaft seal and thus damage the motor

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