Double-control ventilation hood for oxidation desulfurization draught fan

Abstract

The invention relates to a double-control ventilation hood for an oxidation desulfurization draught fan. The double-control ventilation hood for the oxidation desulfurization draught fan comprises a first hood body and a second hood body, wherein the two hood bodies are both in a cuboid shape and are arranged in parallel, the side faces which are opposite to each other of the two hood bodies are connected through a separating strip, rear wind inlet silencers and one-piece sound absorption and separation doors are arranged in the rear side walls of the both two hood bodies, front wind inlet silencers are arranged in the left side wall of the first hood body and the right side wall of the second hood body, manholes are formed in the top plates of the both two hood bodies, draught fan silencers are arranged on the top plates of the both two hood bodies, and hoisting rings are respectively arranged on the tops of the two hood bodies. The side walls of the two hood bodies, from inside to outside, are sequentially formed by a sound insulation board, a lightgage steel joist, a steel mesh composite board, a fire-resistant gypsum board and a color steel board in a laminated mode, wherein rock wool is filled in the lightgage steel joist. According to the double-control ventilation hood for the oxidation desulfurization draught fan, two hood bodies are spliced to form an overall large hood, so that two draught fans in the oxidation desulfurization draught fan can be hidden, and examining and repairing are convenient. In addition, due to the fact that multiple composite structures are adopted for the side walls of the hood bodies, noise and temperature in the hood can be greatly lowered.

Description

Technical field: [0001] The invention relates to the mechanical field, in particular to a noise reduction and sound insulation device for a fan, in particular to a double-control ventilation hood for a desulfurization and oxidation fan. Background technique: [0002] The desulfurization and oxidation fan is composed of two fans, which will generate a lot of noise during operation. The noise is as high as 130dB, and the noise reduction cover is usually used to reduce the noise. In the prior art, the structure of the anechoic cover is simple, the sound insulation and noise reduction function is poor, and the noise at a distance of one meter outside the cover still reaches 100dB or even higher, and the structure of the anechoic cover is not convenient for normal maintenance and operation during overhaul. The working environment on site is poor, which is not conducive to the maintenance of the equipment; at the same time, the temperature inside the fan cover is as high as 50 deg...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a double-control ventilation hood for desulfurization and oxidation fan, the dual-control ventilation hood for desulfurization and oxidation fan should solve the problem of poor sound insulation and noise reduction efficiency of the noise reduction cover in the prior art, The technical problem that the internal temperature is too high and it is not easy to repair

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