Variable-frequency Helmholtz muffler

• Main Authors: LIU ZHONGDA, HAN QIANG, FANG JUNJIE
• Format: Patent
• Language: Chinese; English
• Published: 10.09.2014
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

The utility model relates to a variable-frequency Helmholtz muffler which comprises a barrel, an end cover fixedly arranged at one end of the barrel, a piston and a piston adjusting mechanism. The piston adjusting mechanism comprises an adjusting pull rod and a locking mechanism, one end of the adjusting pull rod is connected with the piston, the locking mechanism is arranged at the other end of the barrel and is used for relatively locking the adjusting pull rod, the locking mechanism comprises a clamping plate fixedly arranged at the other end of the barrel, a through hole is formed in the clamping plate, the adjusting pull rod is arranged in the through hole and is in sliding connection with the through hole, gear racks are arranged on the two opposite sides of the adjusting pull rod, the locking mechanism further comprises spring locks symmetrically arranged on the two sides of the through hole, the spring locks on the two sides correspond to the gear racks on the two sides one to one, and the spring lock