JPS6352995U

JPS6352995U -

Info

Publication number: JPS6352995U
Application number: JP14692686U
Authority: JP
Priority date: 1986-09-25
Filing date: 1986-09-25
Publication date: 1988-04-09
Also published as: JPH0236959Y2

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示すもので、第１図は
全体の断面図、第２図はインペラの上側半分を断
面で示す側面図、第３図はインペラインサートの
正面図、第４図は第３図のインサートの前端面に
おける突起部の断面図、第５図はインペラインサ
ート前端面の他の例を示す図、第６図は第５図の
インサート前端面における突起部の断面図、第７
図はインペラナツトの他の例の端面図、第８図は
仕切壁の一部、軸受保持部及び軸受ブツシングを
該ブツシングの後端面側から見た図、第９図はリ
アケーシングの一部正面図、第１０図は軸受ブツ
シングの上側半分を断面で示した側面図、第１１
図は第１０図の軸受ブツシングの前端面図、第１
２図は第１０図の軸受ブツシングの後端面図、第
１３図は第１０図のＸ―Ｘ線断面図、第１４図は
従動磁石保持部材の正面図、第１５図は第１４図
の部材の後端面図、第１６図は仕切壁上の軸受保
持部と従動磁石保持部材との〓間のラビリンス構
造例の説明図、第１７図はリアケーシングの要部
の一部切り欠き側面図、第１８図は従来のインペ
ラとその周辺部分の説明図である。１……フロントケーシング、１０……ポンプ吸
引側、１００……ポンプ吐出側、２……リアケー
シング、３……仕切壁、３０……軸受保持部、３
０１……連通部、４……軸受ブツシング、４１…
…フランジ、４２……ブツシング前端面、４３…
…通液溝、４４，４４′……半径方向溝、４５…
…給液孔、５……回転軸、５０……後端大径部、
５１，５２……段部、６……インペラ、６１……
インサート、６２……合成樹脂部、６１１……イ
ンサート後端面、６１２……インサート前端面、
６１３，６１３′……突起部、６０……インペラ
ナツト、６０１……ナツト端面、６０２……突起
部、７……従動磁石、７０……磁石保持部材、８
……駆動磁石、８０……磁石保持部材、９……モ
ータ、９１……モータシヤツト、７０２……小内
径部、７０２……大内径部、７０３……段部、７
０４……段部前方空間、７０５……羽根、７０６
……部材７０後端面、７０７……後方空間、７０
８……羽根、２２……給液口、３３……導液孔、
２３，３４……案内羽根。 The drawings show an embodiment of the present invention: Fig. 1 is an overall cross-sectional view, Fig. 2 is a side view showing the upper half of the impeller in cross section, Fig. 3 is a front view of the impeller insert, and Fig. 4 is a cross-sectional view of the entire impeller. FIG. 3 is a sectional view of the protrusion on the front end surface of the insert, FIG. 5 is a diagram showing another example of the front end surface of the impeller insert, FIG. 6 is a sectional view of the protrusion on the front end surface of the insert in FIG. 7
The figure is an end view of another example of the impeller nut, Figure 8 is a view of a part of the partition wall, the bearing holding part, and the bearing bushing as seen from the rear end side of the bushing, and Figure 9 is a partial front view of the rear casing. , FIG. 10 is a side view in cross section of the upper half of the bearing bushing, and FIG.
The figure is a front end view of the bearing bushing in Figure 10,
Figure 2 is a rear end view of the bearing bushing in Figure 10, Figure 13 is a sectional view taken along the line X--X in Figure 10, Figure 14 is a front view of the driven magnet holding member, and Figure 15 is the member in Figure 14. A rear end view, FIG. 16 is an explanatory diagram of an example of the labyrinth structure between the bearing holding part on the partition wall and the driven magnet holding member, and FIG. 17 is a partially cutaway side view of the main part of the rear casing. FIG. 18 is an explanatory diagram of a conventional impeller and its surrounding parts. DESCRIPTION OF SYMBOLS 1... Front casing, 10... Pump suction side, 100... Pump discharge side, 2... Rear casing, 3... Partition wall, 30... Bearing holding part, 3
01...Communication portion, 4...Bearing bushing, 41...
...flange, 42...front end surface of bushing, 43...
...Liquid groove, 44, 44'...Radial groove, 45...
...Liquid supply hole, 5...Rotating shaft, 50...Rear end large diameter part,
51, 52... step section, 6... impeller, 61...
Insert, 62...Synthetic resin part, 611...Insert rear end surface, 612...Insert front end surface,
613, 613'... Protrusion, 60... Impeller nut, 601... Nut end face, 602... Protrusion, 7... Driven magnet, 70... Magnet holding member, 8
... Drive magnet, 80 ... Magnet holding member, 9 ... Motor, 91 ... Motor shaft, 702 ... Small inner diameter section, 702 ... Large inner diameter section, 703 ... Stepped section, 7
04... Space in front of step part, 705... Blade, 706
... Rear end surface of member 70, 707 ... Rear space, 70
8...Blade, 22...Liquid supply port, 33...Liquid guide hole,
23, 34...Guide blades.

Claims

[Scope of utility model registration request]

a front casing, a rear casing connected after the front casing, a rotating shaft extending across both casings, an impeller supported by the rotating shaft in the front casing,
The rear casing includes a driven magnet supported by the rotating shaft and a driving magnet arranged outside the rear casing to face the driven magnet and driven by a motor, and the rear casing has an inner layer made of synthetic resin. A magnetic pump comprising: a part and a metal cover fitted over the part;
At least a portion of the metal cover of the rear casing that exists between the driven magnet and the driving magnet,
A magnetic pump consisting of two perforated metal layers with an electrically insulating layer sandwiched therebetween, and characterized in that the holes in the perforated metal layers are arranged so that they overlap each other or hardly overlap each other. .