Title:
HOLLOW JET VALVE
Document Type and Number:
Japanese Patent JPH1113930
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To miniaturize a hydraulic unit and to exert no failure on auxiliary devices. SOLUTION: A needle 3 is concentrically interposed in a valve body 2 concentrically connected to a passage 1. A driving device is provided to reciprocate the needle 3 along the valve body 2 in its axial direction. Expansion-driving the driving device abuts the sheet surface 3a of the needle 3 to the sheet surface 2a of the valve body 2 to entirely close the passage 1. Adjusting the distance between both the sheet surfaces 2a, 3a adjusts a flow rate. In such a jet valve, the driving device consists of a major cylinder device 7 used for entire closing and having a large bore diameter B and a sub-cylinder device 8 used for adjusting the flow rate and having a small bore diameter b.
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Inventors:
TABUCHI HIROYUKI
Application Number:
JP16483697A
Publication Date:
January 22, 1999
Filing Date:
June 23, 1997
Export Citation:
Assignee:
KUBOTA KK
International Classes:
F16K1/12; F16K31/122; (IPC1-7): F16K31/122; F16K1/12