Pump

Abstract

Abstract PURPOSE:To bear both thrust and radial loads by constituting a fluid dynamic pressure bearing between both the sliding surfaces of an isolating plate with spiral grooves and a rotation receipt plate, and by retaining centering by the use of a core housed in a recess provided in such a way as fronting the center of the sliding surfaces. CONSTITUTION:A rotation receipt plate 23 in the form of a disc as a member equipped with a sliding surface of a flat plate provided for the rotary part of a pump is fixed by adhesion to the back of an impeller 13. The surface of an isolating plate 7 fronting this rotation receipt plate 23 has the same dia. as it and protrudes a little in the axial direction to constitute a sliding surface 25 with spiral grooves 24 except its central part, and a high viscosity lubricant 26 is previously incapsulated between these rotation receipt plate 23 and isolating plate 7, and the receipt plate 23 is attracted by said sliding surface of isolating plate 7. A hemispherical recess is formed in the center of the isolating plate 7 and rotation receipt plate 23, and a small ball 29 is accommodated in this recess. This arrangement bears well thrust and radial loads, prevents wear because of slurry etc. and enhances durability.

Inventors

• 👤 Shotaro Mizobuchi
• 👤 庄太郎 溝淵
• 👤 Yoshiichi Kimura
• 👤 芳一 木村
• 👤 Katsumi Sasaki
• 👤 勝美 佐々木

Bibliographic Details