| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear pump capable of preventing a gear from being caught in a housing.SOLUTION: A gear pump 1 has a pair of gears 2 engaged with each other, and a housing 3 rotatably accommodating the pair of gears 2. The housing 3 includes a pump chamber 4 accommodating the pair of gears 2, a suction port 5 for sucking a fluid into the pump chamber 4, and a discharge port 6 for discharging the fluid from the pump chamber 4. Guide portions 31 for guiding teeth 21 to an inner peripheral face 41 of the pump chamber 4, are respectively formed between the inner peripheral face 41 of the pump chamber 4 opposed to tips of the teeth 21 disposed on outer peripheral portions of the gears 2 and an inner side face 51 of the suction port 5. An angle between a tangential line of the guide portion 31 and a tangential line of the inner peripheral face 41 on a boundary point of the guide portion 31 and the inner peripheral face 41 of the pump chamber 4 is 20° or less. |
