Straight pipe type silencer

Abstract

The invention relates to a straight pipe type silencer which comprises an outer cylinder, wherein an air inlet end plate is arranged at an air inlet end of the outer cylinder, a damping air outlet hole plate is arranged at the air outlet end of the outer cylinder, and a baffle with a through hole is arranged in the middle of the outer cylinder and divides the inside of the outer cylinder into an upper inner chamber and a lower inner chamber. The straight pipe type silencer is characterized in that a spherical damping hole plate and a planar damping hole plate are successively arranged in the lower inner chamber in the air flowing direction, an air guide pipe integrally positioned in the upper inner chamber is welded onto the baffle coaxially, one end of the air guide pipe is communicated with the lower inner chamber through the through hole in the baffle, the other end of the air guide pipe is closed, a group of silencing holes are formed in the lateral walls of the air guide pipe, and a silencing device is arranged outside the air guide pipe coaxially. The silencing device comprises an inner hole plate and an outer hole plate which are arranged between the air guide pipe and the outer cylinder coaxially, the space between the inner hole plate and the outer hole plate is filled with glass fiber cotton, and the space between the outer hole plate and the outer cylinder is filled with wave crest sound-absorbing sponge firmly adhering to the cylindrical surface on the inner side of the outer cylinder. The straight pipe type silencer has the advantages of being good in sound silencing and noise attenuation effect, high in exhaust speed and the like.

Description

technical field [0001] The invention relates to a muffler, in particular to a straight-pipe muffler, which is suitable for noise reduction in the exhaust systems of PSA oxygen generators and nitrogen generators. technical background [0002] The noise emitted by the exhaust system of oxygen generators and nitrogen generators is one of the sources of industrial noise and the main factor causing serious environmental pollution. The structure of the exhaust muffler currently used is relatively simple, and the noise reduction effect is poor. The reason is that many enterprises do not pay enough attention to the environmental pollution caused by noise; few enterprises think of spending a lot of money to effectively control the noise pollution generated by themselves. Although there are some mufflers with better noise reduction effects, the structure is relatively complicated, the use cost is high, and the installation and use are inconvenient. With the rapid development of socie...

AI Technical Summary

Problems solved by technology

The structure of the exhaust muffler currently used is relatively simple, and the noise reduction effect is poor. The reason is that many companies do not pay enough attention to the environmental pollution caused by noise; few companies think of spending a lot of money to effectively control the noise pollution generated by themselves.

Although there are some mufflers with better noise reduction effect, the structure is relatively complicated, the cost of use is high, and the installation and use are inconvenient.

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