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1. (WO2018199152) INTERNAL GEAR PUMP AND INTERNAL GEAR PUMP UNIT

Pub. No.:    WO/2018/199152    International Application No.:    PCT/JP2018/016774
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Thu Apr 26 01:59:59 CEST 2018
IPC: F04C 2/10
F04C 15/00
Applicants: NTN CORPORATION
NTN株式会社
Inventors: HATTORI Kei
服部 圭
AKAI Hiroshi
赤井 洋
SONOZAKI Tomokazu
園嵜 智和
ITO Takayuki
伊藤 貴之
Title: INTERNAL GEAR PUMP AND INTERNAL GEAR PUMP UNIT
Abstract:
Provided is an internal gear pump in which, while a cover and a casing are made of a resin, no breakage occurs when the cover and casing are fastened, and which demonstrates stable discharging performance. Provided is an internal gear pump 1 wherein at least portions of a casing 5 and a cover 6 which are to be joined together are each formed from an injection molding body of a resin composition, the casing 5 and the cover 6 are fixed, the casing 5 and the cover 6 are in contact with each other without any gap in a bolt fixing portion 13 of the two members, a recess closing portion 12 between the casing 5 and the cover 6 has a gap between the two members, and this gap is sealed with a rubber ring 10 provided on the outer periphery of a trochoid accommodating recess 7.