Solid waste pretreatment high-pressure filter

The utility model discloses a high-pressure filter for solid waste pretreatment. Filter barrel, a top cover and a bottom cover are respectively assembled at the upper and lower ends of the filter barrel; a pressure release valve, a pressure gauge and an air pump connecting port are sequentially and fixedly installed on the upper surface of the top cover from left to right, a connecting hole is formed in the upper surface of the top cover, a sealing rod is screwed in the connecting hole, a sealing ring, a microfiltration membrane and a supporting net are sequentially assembled between the filtering barrel and the bottom cover from top to bottom, and a liquid outlet nozzle penetrating through the bottom cover is fixedly installed in the center of the supporting net. A top cover and a bottomcover are fixedly assembled at two ends of the filtering barrel through connecting columns; a connecting hole for supplementing materials into the filtering barrel is formed in the top cover; the interior of the connecting ho