Oil leakage prevention claw type hydrogen circulating pump

The invention relates to an oil leakage prevention claw type hydrogen circulating pump. A cylinder cover and a first bearing seat form a compression cavity, the first bearing seat and a middle partition plate form a transition cavity, the middle partition plate and a second bearing seat form a gear cavity, and the second bearing seat and a motor stator form a motor cavity; the driving shaft sequentially penetrates through the compression cavity, the transition cavity, the gear cavity and the motor cavity, and the driven shaft sequentially penetrates through the compression cavity, the transition cavity and the gear cavity; a driving claw type rotor, a first oil seal, a first bearing, a third oil seal, a driving gear, a third bearing, a fifth oil seal and a motor rotor are mounted on the driving shaft; a driven claw type rotor, a second oil seal, a second bearing, a fourth oil seal, a driven gear and a fourth bearing are mounted on the driven shaft; an oil filling hole is formed in the second bearing seat; an