JPH0272373U

JPH0272373U -

Info

Publication number: JPH0272373U
Application number: JP13720488U
Authority: JP
Priority date: 1988-10-20
Filing date: 1988-10-20
Publication date: 1990-06-01

Description

[Brief explanation of drawings]

第１図は本考案に係るプランジヤーポンプの一
実施例を示した概略縦断面図、第２図は同上プラ
ンジヤーポンプにおけるプランジヤー単体を示し
た拡大縦断面図、第３図は第２図のＡ―Ａ線に沿
つて切断した断面図、第４図は同上プランジヤー
単体を製造途中の段階で示した縦断面図、第５図
は第４図のＢ―Ｂ線に沿つて見た側面図、第６図
は同上プランジヤー単体を第４図乃至第５図に示
した製造途中の段階よりもさらに加工を進めた途
中の段階で示した縦断面図、第７図は第６図のＣ
―Ｃ線に沿つて見た側面図、第８図は加工が完了
した同上プランジヤー単体を示した縦断面図、第
９図は第８図のＤ―Ｄ線に沿つて見た側面図、第
１０図は従来のプランジヤーポンプに使用されて
いるプランジヤーの一例を示した縦断面図、第１
１図は第１０図のＥ―Ｅ線に沿つて切断した断面
図である。１……プランジヤーポンプ、２……吸入室、３
……ハウジング、４……駆動軸、５……カム、６
……シリンダー、９……プランジヤー、９ｂ……
吐出口、９ｃ……胴部、１１……吸入孔、１１ａ
……傾斜面。 Fig. 1 is a schematic vertical sectional view showing one embodiment of the plunger pump according to the present invention, Fig. 2 is an enlarged longitudinal sectional view showing the plunger alone in the same plunger pump, and Fig. 3 is the same as that shown in Fig. 2. A cross-sectional view taken along the line A-A, FIG. 4 is a vertical cross-sectional view showing the plunger alone in the middle of manufacturing, and FIG. 5 is a side view taken along the line B-B in FIG. 4. , FIG. 6 is a vertical cross-sectional view of the same plunger as shown in FIG.
-A side view taken along line C; Figure 8 is a vertical cross-sectional view showing the plunger as a single unit after processing has been completed; Figure 9 is a side view taken along line D-D in Figure 8; Figure 10 is a longitudinal cross-sectional view showing an example of a plunger used in a conventional plunger pump.
FIG. 1 is a sectional view taken along line EE in FIG. 10. 1... Plunger pump, 2... Suction chamber, 3
...Housing, 4...Drive shaft, 5...Cam, 6
...Cylinder, 9...Plunger, 9b...
Discharge port, 9c... body, 11... suction hole, 11a
...Slope surface.

Claims

[Scope of utility model registration request]

A bottomed cylindrical plunger with one end open as a discharge port and a suction hole provided on the circumference is disposed within the cylinder so as to be able to reciprocate in the axial direction, and as the plunger reciprocates, hydraulic oil is supplied to the suction hole. A plunger pump that draws suction into the plunger and discharges from the discharge port side, wherein the opening area of the suction hole gradually increases as the inner circumferential surface of the suction hole moves toward the inside of the plunger. A plunger pump characterized by being formed of.