| 摘要 |
PURPOSE: A fluid circulation valve having an axial return spring is provided to prevent friction and abrasion in order to prevent the malfunction of a valve by forming a cylinder ring with a flange which is in contact with a bearing. CONSTITUTION: A fluid circulation valve having an axial return spring comprises a main body(2), a rotation control shaft(4), bearings(6,7), an axial locking unit, and a returning spring. The main body comprises a penetrating channel(3) for fluid. The rotation control shaft is mounted on the path(10) of the main body for connecting to the penetrating channel and equipping a seal for the penetrating channel. The bearing is equipped in a path between the main body and rotation control shaft. The axial locking unit is for axially locking a shaft inside the main body. The shaft is axially locked by at least one cylinder ring which comprises an outer surface(20) for being in contact with a lateral surface and orients towards one of bearings. The returning spring is equipped between the main body and shaft for applying returning force to the shaft. The returning spring and cylinder ring are not in contact. |
