Fecha de publicación: 06/08/2021 Fuente: WIPO "processing tomato" The noise reduction device for the tomato sauce processing air compressor comprises the compressor, a noise reduction frame is arranged at the top of the front end of the compressor, sound insulation plates are longitudinally and fixedly connected to the left side and the right side of an inner cavity of the noise reduction frame, and sound absorption cotton is arranged at the top and the bottom of the inner wall of the noise reduction frame and located on the inner sides of the sound insulation plates. And hollow pipes are arranged at the top and the bottom of the left side of the sound insulation plate, and the left sides of the hollow pipes penetrate through the left side of the noise reduction frame. A user starts the compressor to work normally, then sound penetrates through the noise reduction frame to make contact with the sound absorption cotton, the sound absorption cotton filters the sound for the first time, the sound penetrates through the sound absorption cotton to make contact with the vibration stopping plate, and the vibration stopping plate repeatedly transmits the sound and counteracts the sound to reduce the frequency. The problem that an existing air compressor does not have a noise reduction function is solved, noise pollution of the air compressor is reduced, the environmental protection property of the air compressor is improved, and the practicability of the air compressor is also improved.