JPS59157585U

JPS59157585U - external gear pump

Info

Publication number: JPS59157585U
Application number: JP18975583U
Authority: JP
Inventors: 荒木　隆吉; 中山　哲秀; 増子　広気
Original assignee: 内田油圧機器工業株式会社
Priority date: 1983-12-08
Filing date: 1983-12-08
Publication date: 1984-10-23

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図は従来の外接歯車ポンプの側板の正面図、第２図
はその底面図、第３図は本考案ポンプの実施例の裁断正
面図、第４図はそのＩＶ−ＩＶ線線断断側面図第５図は
その■−Ｖ線截線面断面図６図及び第７図は夫々騒音曲
線図及びケーシングの温度曲線図である。１・・・ケーシング、２・・・吸入ポート、４．４・・
・歯車、８・・・側板、８ａ・・・ケーシング側面、８
ｂ・・・歯車側面、９・・・部分、１０・・・透孔、１
１・・・凹部。Fig. 1 is a front view of the side plate of a conventional external gear pump, Fig. 2 is a bottom view thereof, Fig. 3 is a cutaway front view of an embodiment of the pump of the present invention, and Fig. 4 is a side view cut along the line IV-IV. FIG. 5 is a sectional view taken along the line 2-V, and FIGS. 6 and 7 are a noise curve diagram and a temperature curve diagram of the casing, respectively. 1...Casing, 2...Suction port, 4.4...
・Gear, 8...Side plate, 8a...Casing side, 8
b... Gear side, 9... Part, 10... Through hole, 1
1... Concavity.

Claims

[Scope of utility model registration request]

In a case where side plates are provided on both sides of a pair of external gears that interlock and rotate with each other in the casing, each side plate has a
A through hole is formed facing the part where each external gear d tooth finishes its engagement in its discharge stroke and starts suctioning fluid between the teeth, and allows the gear side surface of each side plate and the casing side surface to communicate with each other. A recess is formed on the side surface of the casing of the side plate to communicate the through hole with the suction port. External gear pump.