SWING TYPE OILLESS COMPRESSOR AND ITS SHAFT SEAL DEVICE

摘要

PURPOSE:To reduce inner leakage of gas and to increase the delivery by arranging carbon seal members on the sideface of blade board of swing type compressor and the sideface at the large diameter section of spindle contacting against the inner wall face of side housing. CONSTITUTION:A carbon seal 35 is arranged on the sideface of a bladeboard 20 of swing type oilless compressor while push springs 33, 36 for contacting said seal 35 against the side housings 23, 24 are arranged on the back section of said carbon seal 35. Furthermore, a circular groove 32 is formed in the sideface at the large diameter section contacting against the inner wall faces of the side housings 23, 24 of the spindle 19 and a carbon ring 34 is contained in said circular groove 32 through the push spring 33. Consequently, inner leakage of gas through the sideface at the large diameter section of spindle and the bladeboard 20 can be prevented, thereby the delivery can be increased.