AIR-OPERATED VIBRATOR Russian patent published in 1997 - IPC

FIELD: chemical industry. SUBSTANCE: air-operated vibrator has housing, vibrating central rod connected with the working member, spring- loaded with respect to the bearing plate, and secured to the flexible collar to form an actuating chamber together with the flexible valve which is reinforced in the region that is in a contact with the sealing collar of the bearing plate and periphery of the under-valve plate at least through one hard ring. The hard ring may be introduced in the flexible valve as well as may be L- shaped in cross-section or made up as bearing rim. EFFECT: improved design. 5 cl, 7 dwg