| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pump for discharging liquid in a container in which a suction valve and a discharge valve are made hemispherical objects of rubber or a synthetic resin in place of conventional metal balls to be recycled easily without deteriorating the functions of the pump. SOLUTION: In the pump for discharging the liquid in the container 1 provided with a pump body 2 having a pump chamber 3 for storing the liquid, a hollow piston 4 for expanding/contracting the volume of the pump chamber which is installed freely reciprocatably in the pump body, a discharge nozzle part 5 communicating with the piston 4, the suction valve 6 installed in the pump body, and the discharge valve 7 installed in a passage which makes the pump body and the discharge nozzle part 5 communicate with each other, the suction valve 6 and the discharge valve 7 are the hemispherical objects of the rubber or the synthetic resin, can move vertically between support parts 14 and 16 and floating-stop rib parts 13 and 15, and are arranged to rotate only in the circumferential direction of the hemisphere.</p> |
