Oil-gas separator of water-cooled screw compressor

The utility model relates to the technical field of oil-gas separation, and discloses a water-cooling screw compressor oil-gas separator which comprises a separation cylinder, a sealing cover is installed on the top of the separation cylinder, a feeding pipe is fixedly connected to the interior of the sealing cover through a sealing mechanism, an exhaust pipe and an oil discharge pipe are fixedly connected to the left side and the right side of the separation cylinder respectively, and the oil discharge pipe is fixedly connected to the left side and the right side of the separation cylinder. A mounting plate is fixedly connected to the interior of the separation cylinder, and a filter plate is fixedly connected to the interior of the mounting plate through a mortise lock mechanism, so that the device can quickly fix the filter plate through the mortise lock mechanism, and thus great convenience is brought to an operator to disassemble and assemble the filter plate; and the feeding pipe can be sealed through t