Tail gas purification device of diesel generator

The invention belongs to the technical field of diesel generators, particularly relates to a diesel generator tail gas purification device, and aims to solve the problems that existing tail gas directly enters a purification treatment device without being cooled, the purification effect of the purification device and the diesel generator can be affected badly, and the temperature of gas exhausted into air is high. The device comprises a diesel generator exhaust pipe, a first purification box and a second purification box, the diesel generator exhaust pipe is fixedly connected with a cooling assembly used for reducing the temperature of tail gas of the diesel generator, and the device further comprises a water control assembly fixedly connected with the bottom of a tap water connector; and the external purification assembly is arranged below the purification box exhaust pipe. The tail gas purification device has the beneficial effects that tail gas enters the purification treatment device after being cooled, a