JPS58102781U

JPS58102781U - plunger pump

Info

Publication number: JPS58102781U
Application number: JP19661881U
Authority: JP
Inventors: 須永　敬次郎
Original assignee: Individual
Current assignee: Individual
Priority date: 1981-12-29
Filing date: 1981-12-29
Publication date: 1983-07-13

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図〜第３図は従前プランジャーポンプの要部断面図
、第４図は本考案に係名プランジャーポンプの要部断面
図、第５図は同側断面図、第６図〜第９図は動作状態を
示す断面図、第１０図〜第１３図は動作状態を示す側断
面図、第１４図〜第１７図は動作状態を示す平断面図で
ある。尚、図中１・・・シリンダー、２・・・吸入管、３・・
・吐出管、４・・・プランジャー、５・・・螺溝、６・
・・ガイド溝、７・・・液圧調整孔を示したものである
。Figures 1 to 3 are sectional views of essential parts of a conventional plunger pump, Figure 4 is a sectional view of essential parts of a plunger pump related to the present invention, Figure 5 is a sectional view of the same side, and Figures 6 to 3 are sectional views of essential parts of a conventional plunger pump. 9 is a sectional view showing the operating state, FIGS. 10 to 13 are side sectional views showing the operating state, and FIGS. 14 to 17 are plan sectional views showing the operating state. In addition, in the figure 1... cylinder, 2... suction pipe, 3...
・Discharge pipe, 4... Plunger, 5... Spiral groove, 6.
. . . guide groove, 7 . . . indicates a hydraulic pressure adjustment hole.

Claims

[Scope of utility model registration request]

(1) In a structure in which a plunger that is always rotated in one direction is fitted in a cylinder that has a suction hole and a discharge hole at opposite positions on the inner circumferential wall surface so as to be able to freely reciprocate. A plunger pump characterized in that two spiral grooves intersecting each other are symmetrically recessed from the plunger tip toward the plunger base on the circumferential surface of the plunger side half surface.

(2) The inner deep part of the spiral groove and the entrance/exit end are communicated with two parallel grooves recessed from the tip of the plunger toward the base of the plunger. A plunger pump according to claim 1.

(3) The plunger pump according to claim 1, wherein the spiral angle of the spiral groove is determined in correspondence with the reciprocating distance of the plunger.