| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor operated valve which does not cause foreign matter such as sludge and metal powder contained in fluid to penetrate a feed screw part, does not deteriorate sliding property of a screw part due to biting, damage or the like, can operate the valve smoothly and reliably, moreover, does not complicate the configuration and can reduce the cost.SOLUTION: A motor operated valve 10 is configured such that, by conducting electricity through a coil 78, a rotor magnet 58 arranged on a rotor chamber 28 is rotated, thereby, a male screw 54a disposed on the side of a valve shaft fixed on a rotor magnet 58 and a female screw 50a disposed on the side of a guide bush 24 fixed on a valve body 12 are screwed to each other, a needle valve 36 disposed on the tip of the valve shaft is vertically moved and, thereby, a valve port 22 disposed on a valve seat 20 is opened and closed. Therein, the guide bush 24 fits metal fixture 32 to the upper edge part of the valve body 12 and, thereby, is fixed to the valve body 12. |
