Oil-gas separator in heating and ventilation equipment

The utility model discloses an oil-gas separator in heating and ventilation equipment, and relates to the technical field of heating and ventilation equipment, the oil-gas separator comprises a separator shell and a cooling box, the top of the separator shell is provided with a gas inlet connecting pipe and a gas outlet connecting pipe, the interior of the separator shell is fixedly connected with a fixed plate and a sliding rod, the fixed plate is provided with filter holes, and the sliding rod is fixedly connected with the fixed plate. A movable block is connected to the sliding rod in a sliding mode, a brush is installed at the bottom of the movable block, and a driving mechanism for controlling the movable block to slide on the sliding rod in a reciprocating mode is arranged in the separator shell. Filtering holes in a fixed plate are cleaned through a brush at the bottom of a movable block, impurities are prevented from blocking the filtering holes, normal circulation of lubricating oil is guaranteed, th