JPS6236285U

JPS6236285U -

Info

Publication number: JPS6236285U
Application number: JP12814285U
Authority: JP
Priority date: 1985-08-21
Filing date: 1985-08-21
Publication date: 1987-03-03

Description

[Brief explanation of the drawing]

第１図は本考案軸固定装置を示した要部縦断側
面図、第２図は第１図のＡ―Ａ線における切断面
図、第３図は本考案軸固定装置における環状摺接
面の圧接を解除した状態を示す要部縦断側面図、
第４図は本考案軸固定装置における羽根車の表側
から見た平面図、第５図は本考案軸固定装置にお
ける締付ナツトの裏側から見た平面図である。１…セラミツク製の羽根車、２…ポンプ軸、３
…ボス部、４…金属または合成樹脂製の締付ナツ
ト、５…傾斜状嵌合摺接面。 Fig. 1 is a vertical sectional side view of the main part of the shaft fixing device of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a cross-sectional view of the annular sliding surface of the shaft fixing device of the present invention. A vertical sectional side view of the main part showing the state where the pressure welding is released,
FIG. 4 is a plan view of the impeller in the shaft fixing device of the present invention seen from the front side, and FIG. 5 is a plan view of the tightening nut in the shaft fixing device of the present invention seen from the back side. 1... Ceramic impeller, 2... Pump shaft, 3
...Boss portion, 4. Tightening nut made of metal or synthetic resin, 5. Inclined fitting sliding surface.

Claims

[Scope of utility model registration request]

Between the facing surfaces of the boss part 3 of the impeller 1 made of ceramic that is inserted into the pump shaft 2 and the tightening nut 4 made of metal or synthetic resin that is screwed from the tip of the pump shaft 2, the boss part 3 By forming an inclined fitting circumferential surface 5 having a concave side and a convex side on the tightening nut 4 side, and tightening the tightening nut 4 screwed onto the tip of the pump shaft 2 in the axial direction, the above-mentioned This is a shaft fixing device for a ceramic impeller for a submersible pump, which is configured so that an inclined fitting circumferential surface 5 is pressed against it by a wedge action.