| 摘要 |
PROBLEM TO BE SOLVED: To provide a reciprocation pump which enables downsizing of a driving part case and achieves downsizing of the reciprocation pump and reduction of manufacturing costs.SOLUTION: A reciprocation pump includes: a water absorption valve 18 which is provided at a front end part of a plunger 14, supplies a liquid to a pump chamber 40 through rearward movement of the plunger 14, and pushes out the liquid in the pump chamber 40 through forward movement of the plunger 14; a crank case 1 which houses a crank shaft 2 and a connecting rod 4 and receives supply of the liquid; and a through hole 13 which is provided at a cross head 8 and supplies the liquid in the crank case 1 to the water absorption valve 18. The liquid lubricates the crank shaft 2 and the connecting rod 4 and then are supplied to the water absorption valve 18 through the through hole 13 of the cross head 8.SELECTED DRAWING: Figure 1 |
