SELF-PRIMING TYPE PUMP

SELF-PRIMING TYPE PUMP

PROBLEM TO BE SOLVED: To reduce noise generating in a bearing part by supporting an impeller and a rotor magnet in a single point by means of ball bearing. SOLUTION: When alternating current power is applied to a stator 22, a rotor magnet 30 is attracted by a rotational magnetic field generated arou...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: OKUSAKA SHIGERU, TOMISAKA MASARU, HIRAFUJI TAKEFUMI, OSAWA ATSUSHI, HOSHINO TATSUYA, INAI TOMOAKI
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To reduce noise generating in a bearing part by supporting an impeller and a rotor magnet in a single point by means of ball bearing. SOLUTION: When alternating current power is applied to a stator 22, a rotor magnet 30 is attracted by a rotational magnetic field generated around the stator 22 so as to be rotated, and according to this rotation, the whole of a rotor 34 including an impeller 32 is rotated. The rotor magnet 30 is arranged while slightly shifted in the axial direction of a stator housing 14 toward a pump housing 12 side, so that the rotor magnet 30 is attracted in the axial direction on the stator 22 side. Therefore, a recessed face 28a in a bearing cap 28 arranged in the impeller 32 is brought into tight contact with a bearing ball 26 arranged on the stator 22 side so as to be supported in a single point. In this way, noise can be reduced.