Integrated secondary noise reduction vacuum pump silencer

The utility model discloses an integrated secondary noise reduction vacuum pump silencer, which comprises a cylinder body, a drain outlet, a tee joint, an air inlet perforated pipe, an air inlet noise reduction cylinder, a sealing plate, a porous air guide pipe, an air outlet perforated pipe and an air outlet noise reduction cylinder, the silencer cylinder body is provided with an air inlet and an air outlet, the drain outlet is arranged below the air inlet of the cylinder body, the joint is sealed and welded, and the tee joint is connected with the porous air guide pipe. The air inlet perforated pipe is provided with a plurality of small holes, and the air inlet noise reduction cylinder is sleeved on the air inlet perforated pipe. The air inlet noise reduction cylinder is simple in structure, light in weight, small in occupied space and convenient to mount and demount, low-frequency noise can be reduced by high-pressure air generated by the interior of the air inlet noise reduction cylinder to a vacuum pump,