JPS63182295U

JPS63182295U -

Info

Publication number: JPS63182295U
Application number: JP7356387U
Authority: JP
Priority date: 1987-05-15
Filing date: 1987-05-15
Publication date: 1988-11-24

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す縦断正面図、
第２図は冷却水プール部の他の実施例を示す正面
図、第３図は従来例の縦断正面図である。１……モータ、２……モータフレーム、３……
鉛直回転軸、４……羽根車、５……ケーシング、
５Ａ……吸込口、５Ｂ……吐出口、８Ａ……上室
、８Ｂ……下室、９……嵌め合い部、１０……ク
リアランス、１１……背圧低減孔、１２……冷却
水プール部、１２Ａ……周壁、１２ａ……切欠部
、１３……冷却水供給管、１３Ａ……入口。 FIG. 1 is a longitudinal sectional front view showing an embodiment of the present invention;
FIG. 2 is a front view showing another embodiment of the cooling water pool section, and FIG. 3 is a longitudinal sectional front view of the conventional example. 1...Motor, 2...Motor frame, 3...
Vertical rotating shaft, 4... impeller, 5... casing,
5A...Suction port, 5B...Discharge port, 8A...Upper chamber, 8B...Lower chamber, 9...Fitting part, 10...Clearance, 11...Back pressure reduction hole, 12...Cooling water pool Part, 12A... Peripheral wall, 12a... Notch, 13... Cooling water supply pipe, 13A... Inlet.

Claims

[Claims for Utility Model Registration] (1) It has a cylindrical motor frame housing a motor, and an impeller attached to the vertical rotating shaft of the motor, with a suction port formed at the lower end and a discharge port on one side. and a casing that incorporates the impeller and is divided into two into an upper chamber and a lower chamber and is integrally connected to the lower side of the motor frame in a liquid-tight manner, and the casing and the impeller are fitted into each other. In the submersible pump, a clearance for communicating the upper chamber and the lower chamber is formed in the submersible pump, and an exhaust pressure reduction hole is formed for communicating the upper chamber with the outside and reducing back pressure applied to the impeller. A submersible pump characterized in that a cooling water pool is formed in the upper part of the frame, and an inlet of a cooling water supply pipe for supplying pumped water to the cooling water pool and overflowing the cooling water pool is connected to the exhaust pressure reduction hole. . (2) Utility model registration claim 1, characterized in that the peripheral wall of the cooling water pool part is formed in a round structure with a plurality of notches provided at a predetermined interval at the upper end thereof. Submersible pump as described in section. (3) The submersible pump according to claim 2, wherein the plurality of notches are V-shaped grooves.