Title:
SPOOL AND SPOOL VALVE
Document Type and Number:
Japanese Patent JP2022091424
Kind Code:
A
Abstract:
To provide a spool which can suppress a disturbance of a flow which occurs when liquid flows out of a notch to a recess.SOLUTION: A spool 2 extending in a prescribed direction comprises a land part in which a plurality of notches 31, 33 and 34 are formed, and a recess 23 adjoining the land part at one side in a prescribed direction. The notch has at least a first flow passage part 31a separating from the recess, and a second flow passage part 31b located at the recess side, the first flow passage part is a groove part which is formed at an external peripheral face of the land part, the second flow passage part is a hole part formed at the external peripheral face of the land part, and a cross section area of the hole part is set larger than a cross section area of the groove part.SELECTED DRAWING: Figure 2
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Inventors:
AOKI SEIJI
TANAKA YOSHIKAZU
INAZAWA MOTOMU
HATA NAOKI
TANAKA YOSHIKAZU
INAZAWA MOTOMU
HATA NAOKI
Application Number:
JP2020204254A
Publication Date:
June 21, 2022
Filing Date:
December 09, 2020
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD
International Classes:
F16K3/24
Attorney, Agent or Firm:
Shoji Ishida