Novel impedance composite compressed air silencing device

The utility model discloses a novel impedance composite compressed air silencing device which comprises an air inlet guide cylinder, an outer cylinder, an air outlet guide cylinder, impact-resistant metal silencing filler and a protective net. An air outlet guide cylinder is arranged at the upper end of the outer cylinder, an air inlet guide cylinder is arranged at the lower end of the outer cylinder, and impact-resistant metal silencing filler and a protective net are arranged in a cavity; air outlet holes are uniformly distributed in the air outlet guide cylinder, and the guide cylinder is fixed with the outer cylinder through inner hexagon screws; the lower end of the air inlet guide cylinder extends out of the bottom of the outer cylinder and is provided with a flange, and the upper end is provided with a baffle and fixed to the guide cylinder through a support. Due to the fact that the compressed air exhausted by the pressure swing adsorption air separation equipment is mixed noise, the air flow is subje