HORIZONTAL INTERNAL GEAR PUMP - NTN TOYO BEARING CO LTD

Title:

HORIZONTAL INTERNAL GEAR PUMP

Document Type and Number:

WIPO Patent Application WO/2015/119050

Kind Code:

A1

Abstract:

　A horizontal internal gear pump (1) has: an intake-side capacity chamber in which an inner rotor (3) having a plurality of external teeth is accommodated within an outer rotor (2) having a plurality of internal teeth such that the external teeth mesh with the internal teeth and the inner rotor (3) is free to rotate in an eccentric state, and a liquid is drawn in between the internal teeth and the external teeth; a trochoid (4) in which is formed a discharge-side capacity chamber for discharging the liquid drawn into the intake-side capacity chamber; a liquid intake nozzle (9) extending in a direction not perpendicular to a rotating surface of the trochoid, the distal end of the liquid intake nozzle (9) dipping into a liquid collector (18); a pump casing (5) in which a concavity (5a) for accommodating the trochoid is formed; and a pump cover (6) for closing the concavity. An intake cover (8) having the liquid intake nozzle (9) is secured to the pump casing (5), and the liquid intake nozzle (9) and the intake cover (8) are integrally molded by extrusion molding a resin composition.

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Inventors:

ISHII TAKUYA (JP)
HATTORI KEI (JP)

Application Number:

PCT/JP2015/052635

Publication Date:

August 13, 2015

Filing Date:

January 30, 2015

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

F04C2/10; F04C15/00

Foreign References:

JP5285988B2	2013-09-11
JP2008121600A	2008-05-29
JPH07189960A	1995-07-28
US6422346B1	2002-07-23

Other References: