| 摘要 |
PURPOSE:To prevent the disordering phenomenon of the magnetic joint during operation by a method wherein the attracting forces of both magnets are strengthened and a distance between both magnetic boards is reduced to make the transmitting torque of both magnetic boards sufficient at all times. CONSTITUTION:When the driving magnetic board 6 is rotated by a motor 8, the follower magnetic board 4 is rotated through the joint, accordingly, an impeller 3 is also rotated and the pump is operated. The impeller 3 receives a thrust toward a suction port 12 side as the pump is operated, however, the attacting force between both magnetic boards 4, 6 is made stronger than the thrust and the impeller 3 will never be shifted toward the suction port 12 side. Accordingly, the distance between both magnetic boards will never be increased and the transmitting torque becomes sufficient thereby eliminating the disordering phenomenon of the magnetic joint. |
