JPH0214487U

JPH0214487U -

Info

Publication number: JPH0214487U
Application number: JP9080488U
Authority: JP
Priority date: 1988-07-08
Filing date: 1988-07-08
Publication date: 1990-01-30

Description

[Brief explanation of drawings]

第１図は本考案による潤滑液還流構造を備えた
ポンプの一実施例の断面図、第２図は第１図の
―線断面図、第３図は第１図の―線断面図
、第４，５図は従来のポンプの潤滑液還流構造の
説明図で、第４図は断面図、第５図は第４図の
―線断面図、である。Ｋ_２……内側還流路、Ｋ_３……外側還流路、１
ａ……ポンプの吸込側流路、５……軸受部材、６
……ポンプの回転軸（駆動軸）、９……端壁部材
、９ａ……回転軸貫通孔、９ｂ_１……内側還流口
、９ｃ_１……外側還流口、１０……軸封部材、１
０ａ……シール部材配設孔。 Fig. 1 is a cross-sectional view of an embodiment of a pump equipped with a lubricant recirculation structure according to the present invention, Fig. 2 is a cross-sectional view taken along the line - - of Fig. 1, and Fig. 3 is a cross-sectional view taken along the line - - of Fig. 1. 4 and 5 are explanatory diagrams of a lubricating liquid recirculation structure of a conventional pump, where FIG. 4 is a sectional view and FIG. 5 is a sectional view taken along the line -- in FIG. 4. _K2 ...Inner return path, _K3 ...Outer return path, 1
a... Pump suction side flow path, 5... Bearing member, 6
...Rotating shaft (drive shaft) of pump, 9... End wall member, 9a... Rotating shaft through hole, 9b ₁ ... Inner return port, 9c ₁ ... Outer return port, 10... Shaft sealing member, 1
0a...Seal member installation hole.

Claims

[Claims for Utility Model Registration] An end wall member having a rotating shaft through hole through which the rotating shaft of the pump passes is disposed outside a bearing member that supports the rotating shaft of the pump, and the Lubrication of a pump in which a shaft sealing member having a sealing member installation hole communicating with a rotating shaft through hole is disposed, and a return flow path communicating the rotating shaft through hole of the end wall member with a suction side flow path of the pump is provided. In the liquid reflux structure, the reflux passage is connected to an inner reflux passage and an outer reflux passage that connect an inner reflux opening and an outer reflux opening, which are arranged apart in the axial direction of the rotating shaft through hole, to a suction side passage of the pump, respectively. The clearance between the rotating shaft surface and the inner surface of the rotating shaft through-hole, which is arranged between the inner recirculation port and the outer recirculation port, is set to a value that allows the lubricant to pass through while receiving a predetermined resistance. Liquid reflux structure.