JPH0424700U

JPH0424700U -

Info

Publication number: JPH0424700U
Application number: JP6584590U
Authority: JP
Priority date: 1990-06-20
Filing date: 1990-06-20
Publication date: 1992-02-27

Description

[Brief explanation of drawings]

第１図は本考案装置における耐水弾性材製チユ
ーブの半断面図であつて、［Ａ］は外周面中央部
にフランジを突設することにより段部を形成せし
めた事例を示し、［Ｂ］は外周面前半部と後半部
とに直径差を附することによ段部を形成せしめた
事例を示す。第２図は第１図［Ａ］の耐水弾性材
製チユーブを用いて本考案装置を構成せしめた渦
巻きポンプの要部縦断側面図、第３図は第１図［
Ｂ］の耐水弾性材製チユーブを用いて本考案装置
を構成せしめた渦巻きポンプの要部縦断側面図で
ある。３……渦巻き室出口、５……オイル室、６……
オイル室内通水孔、８……モーター室、９……モ
ーターフレーム内水路、１０……ポンプ吐出口、
１１……耐水弾性材製チユーブ、１２……段部。 FIG. 1 is a half-sectional view of a tube made of water-resistant elastic material in the device of the present invention, where [A] shows an example in which a step is formed by protruding a flange at the center of the outer peripheral surface, and [B] shows an example in which a stepped portion is formed by providing a diameter difference between the first half and the second half of the outer circumferential surface. FIG. 2 is a longitudinal sectional side view of the main part of the centrifugal pump in which the device of the present invention is constructed using the tube made of water-resistant elastic material shown in FIG. 1 [A], and FIG.
FIG. 3 is a vertical sectional side view of the essential parts of the centrifugal pump in which the device of the present invention is constructed using the tube made of water-resistant elastic material of [B]. 3...Vortex chamber outlet, 5...Oil chamber, 6...
Oil chamber water passage hole, 8...Motor room, 9...Motor frame internal waterway, 10...Pump discharge port,
11...Tube made of water-resistant elastic material, 12...Stepped portion.

Claims

[Scope of utility model registration request]

a water passage hole 6 in the oil casing vertically installed outside the oil chamber 5 so as to communicate with the swirl chamber outlet 3;
The front half of a tube 11 made of a water-resistant elastic material has a step 12 wrapped around the middle part of its outer peripheral surface at a joining position with a motor frame internal water channel 9 vertically installed outside the motor chamber 8 so as to communicate with the pump discharge port 10. The outer circumferential surface is press-fitted into the inner circumferential surface of the water passage hole 6 in the oil casing, and the outer circumferential surface of the rear half is press-fitted into the inner circumferential surface of the starting end of the motor frame inner water channel 9, and the stepped portion 12
A protection device for a discharge waterway in a centrifugal pump, which is constructed by joining an oil casing 4 and a motor frame 7 by pressing the end face of the oil casing 4 to the mouth end face of an oil casing water passage hole 6 or a motor frame inner waterway 9.