| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water supply pump for a boiler of a motor and the like capable of automatically controlling water supply in accordance with a rotating speed of the motor on the basis of the load, and stably taking out the predetermined rotating speed and the output. SOLUTION: In this water supply pump for the boiler comprising a pump plunger 11 provided with a control piston 12 and a pump piston 20 in a cylinder 2, and sucking and discharging the water by reciprocation of the pump plunger 11 with the action of a check valve, a spring 14 for moving the pump plunger 11 to a water suction-side and an operating member 9 for moving the pump plunger 11 to a water discharge-side are mounted in the cylinder 2, the operating member is reciprocated corresponding to the rotation of the motor, and the operating member and the pump plunger can be abutted on and separated from each other. When the rotation of the motor is slow, the plunger is moved in accompany with the movement of the operating member, and when the rotation of the motor is fast, the plunger is moved with the delay to the movement of the operating member.</p> |
