High-pressure reaction kettle and fixing frame thereof

The utility model discloses a high-pressure reaction kettle and a fixing frame thereof. The fixing frame comprises a vertical frame, a first sliding block, a second sliding block, a kettle body bearing ring and a locking piece, wherein the first sliding block, the second sliding block and the kettle body bearing ring are arranged on the vertical frame in a sliding manner; the locking piece is used for locking each sliding block on the vertical frame; the vertical frame comprises a rib plate for guiding sliding, the first sliding block is provided with an axial limiting part for limiting the kettle body bearing ring to slide relative to the vertical frame, and the kettle body bearing ring is rotatably arranged on the vertical frame in a sleeving manner; the kettle body bearing ring and the second sliding block are respectively and relatively fixed with the kettle body and the kettle cover. The kettle body and the kettle cover can vertically slide along the vertical frame, mutual approaching and alignment betwe