JPS5822481U

JPS5822481U - rotary pump

Info

Publication number: JPS5822481U
Application number: JP11634881U
Authority: JP
Inventors: 和田　一二三
Original assignee: 三菱電機株式会社
Priority date: 1981-08-03
Filing date: 1981-08-03
Publication date: 1983-02-12

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図は従来の羽根形回転ポンプを示す縦断面図、第２
図は第１図の■−■線に沿って得た従来１、。の回転ポンプの断面図、第３図および第４図は第１図に
示された従来の回転ポンプにおいて偏心リング部とベー
ンとの関係を示す部分的な断面図、第５図は本考案の一
実施例における回転ポンプを示す縦断面図、第６図は第
５図のＶＩ−ＶＩ線に沿って得た本考案の回転ポンプを
示す断面図、第７図は第５図に示された本考案における
回転ポンプの偏心リング部を拡大して示す部分的な断面
図である。２・・・ブラケット、４・・・ハウジング、５・・・ポ
ンプ室、６・・・駆動軸、７・・・ロータ、８・・・ベ
ーン、２０・・・回転ポンプ、２１・・・偏心リング部
、２１ａ・・・摺動面即ちテーパ面。なお、図中同一符
号は同一部分又は相当部分を示す。Figure 1 is a vertical cross-sectional view showing a conventional vane-type rotary pump;
The figure is Conventional 1, taken along the line ■-■ in Figure 1. FIGS. 3 and 4 are partial sectional views showing the relationship between the eccentric ring part and the vane in the conventional rotary pump shown in FIG. 1, and FIG. FIG. 6 is a cross-sectional view showing the rotary pump of the present invention taken along line VI-VI in FIG. 5; FIG. FIG. 2 is an enlarged partial cross-sectional view of an eccentric ring portion of a rotary pump according to the present invention. 2...Bracket, 4...Housing, 5...Pump chamber, 6...Drive shaft, 7...Rotor, 8...Vane, 20...Rotary pump, 21...Eccentricity Ring portion, 21a...sliding surface, ie, tapered surface. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

In a vane-shaped rotary pump, a housing is attached to a side wall on the drive side, and a rotor is connected to a drive shaft and can be rotated in a pump chamber formed inside the housing, and a plurality of rotors are attached to the rotor and are slidable in the radial direction. and an eccentric ring portion formed to protrude from the inner wall of the housing of the pump chamber, an outer circumferential surface of the eccentric ring portion being formed as an inclined surface forming an obtuse angle with an end surface thereof, and one of the vanes. The lower edge of the side end portion that contacts the inclined surface of the eccentric ring is formed into an inclined surface having the same inclination angle as the inclined surface, and the lower edge of the inclined surface of the eccentric ring portion is formed in a maximum dimension from the drive shaft. The rotary pump is located at a position that is lowered radially inward from the bottom of the vane by an amount greater than the difference between the minimum dimension and the minimum dimension.