Roots type pump

Abstract

Abstract PURPOSE:To prevent play between a rotor and a rotor shaft by providing pin holes simultaneously coaxially in the rotor and the rotor shaft to insert a pin into said pin holes. CONSTITUTION:Rotors 20, 21 are assembled with rotor shafts 22, 23 and pin holes 24 are provided coaxially in the rotors and rotor shafts at a time. The rotors completely integrated with the respective rotor shafts without any play by press fitting a pin 18 into the pin holes 24. The transmission of turning torque from the rotor shaft to the rotor is carried out through keys 19, 25. In the assemblage, the rotor shaft 22 is press fitted into a bearing 5 after the rotor is beforehand assembled with the rotor shaft. Next, the shaft 23 is press fitted into a bearing 6 not to interfere with the rotor 20.

Inventors

• 👤 Harumasa Obata
• 👤 小幡　治征
• 👤 Kenji Yamada
• 👤 健二 山田

Bibliographic Details