This device is an intake filter silencer for a diesel engine. Its filtration accuracy is generally 2-5um and can be customized according to customer requirements. Its noise reduction capacity is generally 10-25dB (A) in the noise reduction section. The pipeline between the diesel engine intake and the device is connected by a flange. A maintenance platform is provided at the filter end for easy replacement of consumable filter cartridges. The internal material of the device is stainless steel and its external anti-corrosion grade is C5M.