Oil pump convenient to disassemble and assemble

The oil pump convenient to disassemble and assemble comprises a pump body and a pump cover, the pump body and the pump cover are oppositely arranged, a first base is fixedly installed at the bottom of the pump body, a second base is fixedly installed at the bottom of the pump cover, a first fixing block is fixedly installed at the top of the pump body, and a second fixing block is fixedly installed at the top of the pump cover. When an existing gear oil pump is mounted or dismounted, each bolt needs to be screwed and fixed, the operation is too tedious and inconvenient, meanwhile, a certain requirement is needed for the sequence of rotating the bolts in the mounting process, and the sealing performance of the oil pump is reduced once the bolts are mistakenly screwed, so that a gear disc and a gear sleeve are designed; a first disc is rotated, a G-shaped groove moves, is pressed down and is clamped, at the moment, a gear disc is attached to a gear sleeve, the gear disc is rotated through a rotating through gro