Oil-gas separation device for fuel tank

The utility model discloses an oil-gas separation device for a fuel tank, which belongs to the technical field of fuel tank accessories and comprises a separator and a gas separation pipe, a connecting plate is mounted at the top of the separator, a sliding groove is formed in the upper surface of the connecting plate, the sliding groove penetrates through two ends of the connecting plate, and the gas separation pipe is connected with the separator. A screw hole is formed in the edge of the upper surface of the connecting plate, L-shaped metal plates are symmetrically installed above the connecting plate, clamping blocks are welded to the surfaces of the sides, corresponding to the gas separation pipe, of the L-shaped metal plates, clamping grooves are formed in the surfaces of the clamping blocks, and the clamping grooves and the gas separation pipe form an embedded structure. The gas separation pipe is clamped and fixed through the clamping blocks, meanwhile, the strength, rigidity and torsion resistance of