AIR-OPERATED VIBRATOR Russian patent published in 1998 - IPC

FIELD: general-purpose air-operated vibrator can be used in actuator of working member intended to feed the aluminium electrolyzer with raw material. SUBSTANCE: vibrated member in the form of rod 5 is secured on elastic collar 6 and passes through central hole 7 of bedplate 8 making up power chamber 19 together with collar 6. The rod is spring-loaded relative to the bedplate. Elastic valve 12 is secured on the rod by means of bush 13, the valve alternately closes hole 7 and opens it for exhaust of working medium from the power chamber. The exhaust path comprises preexhaust chamber 17. Chamber 17 is formed in hole 7 secured on bush 13 by elastic collar 16 freely resting on the hole surface, and by valve 12. Chamber 17 communicates with the atmosphere through holes 14 in the bush, rod cavity, volume formed by collar 6 and partition 24, and annular ducts 30, 32 of the partition and bedplate. EFFECT: considerably reduced noise caused by exhaust of compressed air. 5 cl, 4 dwg