JPS61147398U

JPS61147398U -

Info

Publication number: JPS61147398U
Application number: JP3173285U
Authority: JP
Priority date: 1985-03-06
Filing date: 1985-03-06
Publication date: 1986-09-11

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示すウオータポンプ
の側断面図、第２図は第１図のＢ―Ｂ断面図、第
３図は第１図における要部の詳細図、第４図は従
来のウオータポンプの側断面図、第５図は第４図
のＡ〜Ａ断面図、第６図は第５図において水の流
れを示す説明図、第７図は第４図における要部の
詳細図、第８図は第７図の斜視図である。図の主要部分の説明、２……ポンプインペラ、
３……シユラウド部、４……インペラ背面部、５
……回転軸、６……ハウジング、７……渦室、１
０……渦室壁面、１１……メカニカルシール、１
２，１３……突起、１４……インペラデイスク部
、Ａ……渦室の締切部。 Fig. 1 is a side sectional view of a water pump showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line BB in Fig. 1, Fig. 3 is a detailed view of the main parts in Fig. 1, and Fig. 4 is 5 is a sectional view from A to A in FIG. 4, FIG. 6 is an explanatory diagram showing the flow of water in FIG. 5, and FIG. 7 is a side sectional view of a conventional water pump. The detailed view, FIG. 8, is a perspective view of FIG. 7. Explanation of the main parts of the diagram, 2...Pump impeller,
3... Shroud part, 4... Impeller back part, 5
... Rotating shaft, 6 ... Housing, 7 ... Vortex chamber, 1
0... Vortex chamber wall surface, 11... Mechanical seal, 1
2, 13... Protrusion, 14... Impeller disk portion, A... Shutoff portion of the vortex chamber.

Claims

[Scope of utility model registration request]

A water pump comprising a pump impeller fixed to a rotating shaft and forcibly supplying cooling water, a pump housing containing the pump impeller and forming a vortex chamber, and a mechanical seal disposed behind the pump impeller. , a ring-shaped protrusion is provided on at least one of the impeller back side and the shroud side, extending partially or entirely from the shutoff part of the vortex chamber in the direction opposite to the rotational direction of the impeller on the outer circumference of the pump impeller of the housing; The height of the water pump is equal to the outer periphery of the disk of the impeller when it is on the back side of the impeller, and at least overlaps with the tip of the impeller when it is on the shroud side.