Outdoor Impedance Composite Muffler

Abstract

The invention relates to an outdoor impedance composite muffler, which is composed of a resistive muffler component, an upper resistive muffler component and a lower resistive muffler component, and is installed at an air outlet. The resistive noise-absorbing component is made of arc-shaped diversion shape, two side panels and inorganic sound-absorbing panels. The upper resistive noise-absorbing component is composed of the first inorganic sound-absorbing The permanent noise reduction component is composed of a second inorganic sound-absorbing board and a second slot. The arc-shaped diversion shape is made of glass fiber reinforced plastic composite structure, and the inorganic sound-absorbing board is pasted on the arc-shaped diversion shape and the two side panels by using damping and sound-insulating glue. The upper resistance muffler component is arranged on the upper part of the arc diversion shape outlet and the ground of the air outlet, and the lower resistance muffler member is arranged below the ground of the air outlet. The materials used have good weather resistance and can be used normally in harsh environments with humidity and corrosive gases. The structure is simple, the maintenance and replacement of sound-absorbing components are convenient, and the cost is low.

Description

technical field [0001] The invention relates to a noise control technology, in particular to an outdoor impedance composite muffler which can be used in harsh environments with humidity and corrosive gas. Background technique [0002] With the rapid development of urban construction, the sewage treatment plant located at the edge of the city is surrounded by residential areas, and the noise of the sewage treatment plant interferes with the residents. At present, the noise value of each noise source in the sewage treatment plant far exceeds the national standard, and the oxidation ditch is closed with a concrete structure, which meets the water flow noise control of the oxidation ditch that is wide in area and loud in sound. However, the reserved air inlet for the oxygen supply demand of the rotary butterfly aerator, the sewage outlet of the aeration tank and the inspection port of the rotary butterfly aerator have become the main channels for the noise transmission of the ro...

AI Technical Summary

Problems solved by technology

However, the reserved air inlet for the oxygen supply demand of the rotary butterfly aerator, the sewage outlet of the aeration tank and the inspection port of the rotary butterfly aerator have become the main channels for the noise transmission of the rotary butterfly aerator, which still cause serious damage to the surrounding environment. influences

Due to the corrosiveness of the sewage in the oxidation ditch and the escaping exhaust gas, the sound-absorbing material and steel structure shell of the general ventilation muffler are difficult to use in such a harsh environment with damp and corrosive gases

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