| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear pump capable of controlling outside discharge of liquid applied for a lubrication between a shaft and a bearing and restricting a flowing-out amount of liquid from a shaft sealed part to outside to minimum.SOLUTION: A hole part 46 formed at a valve port 45 is communicated with a hole part 53 formed at a stuffing box 14. This hole part 53 is communicated with a hole part 52 formed at an outer periphery of a labyrinth seal 15. Then, the hole part 52 is communicated with a clearance 51 formed between an end part of the labyrinth seal 15 and a bearing 13. Due to this fact, a communication hole for discharging resin applied for lubrication among a driving shaft 11, a driven shaft 21 and the bearing 13 is constituted by these hole part 46, a passing hole 44, the hole part 53, the hole part 52 and the clearance 51 to outside.SELECTED DRAWING: Figure 3 |
