Title:
WATER BASE PROPORTIONAL VALVE AND CONTROL METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/093869
Kind Code:
A1
Abstract:
A water base proportional valve for a hydraulic support electrohydraulic control system. The water base proportional valve comprises a water base proportional valve structure and a testing control portion; the water base proportional valve structure comprises a main valve liquid inlet valve sleeve (1), a main valve spring (2), a main valve seat (3), a main valve liquid return valve core (4), a main valve liquid inlet valve core (5), a main valve sleeve (21), a main valve liquid return valve sleeve (11), a one-way valve (22), a two-position and two-way electromagnetic switch valve (23), a pilot valve liquid inlet valve core spring (6), a pilot valve liquid inlet valve core spring seat (7), a pilot valve liquid inlet ball valve (8), a pilot valve liquid inlet valve seat (9), a pilot valve liquid return valve core spring (19), a pilot valve liquid return valve core (20), an ejector rod (10), an L-shaped driving rod (12), a lead screw and nut mechanism (13), and a direct current servo motor (15). A method for controlling the water base proportional valve for a hydraulic support electrohydraulic control system. Underground coal mine hydraulic support precise posture adjustment and hydraulic impact reduction are achieved.
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Inventors:
LIAO YAOYAO (CN)
CHAI WEIFENG (CN)
LIAN ZISHENG (CN)
DONG JIANLIN (CN)
LIU KE (CN)
LI CHENG (CN)
CHAI WEIFENG (CN)
LIAN ZISHENG (CN)
DONG JIANLIN (CN)
LIU KE (CN)
LI CHENG (CN)
Application Number:
PCT/CN2019/112708
Publication Date:
May 14, 2020
Filing Date:
October 23, 2019
Export Citation:
Assignee:
UNIV TAIYUAN TECHNOLOGY (CN)
International Classes:
F15B13/02; F16K31/04
Domestic Patent References:
| WO2005040618A1 | 2005-05-06 |
Foreign References:
| CN109555740A | 2019-04-02 | |||
| CN201037424Y | 2008-03-19 | |||
| CN203515637U | 2014-04-02 | |||
| CN2705646Y | 2005-06-22 | |||
| CN1375641A | 2002-10-23 | |||
| CN104675423A | 2015-06-03 |
Attorney, Agent or Firm:
TAIYUAN JINKE INTELLECTUAL PROPERTY ATTORNEY LAW OFFICE (SPECIAL GENERAL PARTNERSHIP) et al. (CN)
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