Horizontal shaft pump

Abstract

Abstract PURPOSE:To support a thrust load in both normal and reverse rotations of a horizontal shaft pump by providing an intermediate disc having a spiral groove on its upper surface formed in a direction for causing a dynamic pressure effect in normal rotation and another such groove on the lower surface in a direction for causing the same effect in reverse rotation, between a rotary bearing disc and a fixed bearing disc. CONSTITUTION:Between a rotary bearing disc 36 and a stationary bearing disc 38 is inserted an intermediate disc 39 of ceramics, etc. comprising spiral grooves 47 and 47' formed in such a direction that a dynamic pressure effect is given in normal rotation by the groove on the upper surface and the same effect is given in reverse rotation by another groove on the lower surface. By this constitution, when the rotary shaft 11 is turned in arrow direction, a flow in an arrow A direction is caused on the surface of the intermediate disc 39. Then, this disc is made in close contact with the stationary disc 38 and a fluid film is formed between the surface of the intermediate disc 39 and the rotary bearing disc 36 to support a thrust load. In the reverse rotation, the intermediate disc 39 is attracted by the rotary bearing disc 36, and both discs rotate all together, thereby forming a dynamic pressure effect between the back of the intermediate disc 39 and the stationary bearing disc 38. In this instance, the intermediate disc 39 is not penetrated by a shaft, and it is possible to obtain a large dynamic pressure effect and make the pump compact.

Inventors

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

Bibliographic Details