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J×P-1型局扇消音器,最近由焦作矿局研制成功。它是一个以软质聚氨酯泡沫塑料为消音材料,敷于钢板圆筒内壁,在筒的正中置有充填消音材料的消音柱。它具有结构简单,安装使用方便等优点,它与5.5瓩局扇配套使用时,可使噪音由104分贝降低到79分贝,声压级最大降噪量33分贝,总响度降低80.5％,当与11瓩局扇配套使用时,可使噪音由111分贝降低到84分贝,声压级最大降噪量38分贝,总响度降低83.5％风量损失仅1.96％。
J × P-1-style sector silencer, recently developed by the Jiaozuo Mining Bureau. It is a soft polyurethane foam muffler material, apply to the inner wall of steel cylinder, the middle of the cylinder is filled with muffler silencer column. The utility model has the advantages of simple structure and convenient installation and use. When used in combination with a 5.5 瓩 fan, the noise can be reduced from 104 dB to 79 dB, the maximum sound pressure level is reduced by 33 dB, and the total loudness is reduced by 80.5% 11 瓩 Bureau fans supporting the use of noise can be reduced from 111 dB to 84 dB, the maximum sound pressure level noise reduction of 38 dB, the total reduction of 83.5% of the volume of air loss was only 1.96%.