Tubular muffler

The invention discloses a tubular muffler and belongs to the field of noise control. The whole tubular muffler is of a tubular multi-layer structure and comprises a joint, an outer pipe, an inner pipeand sound absorption cotton, wherein the inner pipe is sleeved with the outer pipe, and the space between the inner pipe and the outer pipe is filled with the sound absorption cotton; the joint is ofa double-layer structure, the outer layer of the joint is connected with the outer pipe, and the inner layer of the joint is connected with the inner pipe; and a plurality of muffling through holes are formed in the outer surface of the inner pipe. The tubular muffler is simple in structure and convenient to install, can be used independently, can also be used as a connecting pipeline between two-stage or multi-stage mufflers, and can effectively lower the pneumatic noise of mechanical equipment. 本发明公开了一种管式消声器，属于噪声控制领域。该管式消声器整体为管式多层结构，包括接头、外管、内管、吸声棉，所述内管套在外管里面，内管和外管之间填充吸声棉，所述接头为双层结构，接头的外层与外管连接，接头的内层与内管连接，内管外表面布置多条消声通孔