Title:
DIGITAL SPEED CONTROL VALVE FOR STRAIGHTENING HYDRAULIC SUPPORT OF FULLY MECHANIZED COAL MINING FACE, AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/206997
Kind Code:
A1
Abstract:
Disclosed is a speed control valve (1), which can accurately control the flow of an emulsion, thereby accurately adjusting the position of a hydraulic support (7), and reducing the impact of the emulsion occurring to a straightening system during the process of straightening. The speed control valve comprise a valve core (2) and a valve seat (3), wherein that valve core is provided with an internal channel (21), which is in communication with an inlet (4) of the speed control valve, and a first speed control port (22) is provided on the valve core; the valve seat is in communication with an outlet of the speed control valve, and a second speed control port (31) is provided on the valve seat; the valve core and the valve seat can rotate relative to each other, and the second speed control port is on a rotating track of the first speed control port; and when the valve core and the valve seat rotate relative to each other, the first speed control port and the second speed control port are gradually aligned to connect the inlet and the outlet of the speed control valve in a communicating manner. Further disclosed are a straightening system and a straightening method, which are configured to adjust the position of the hydraulic support.
Inventors:
KOU ZIMING (CN)
WU JUAN (CN)
ZHAO JIYUN (CN)
REN QICHAO (CN)
JIN TIANYI (CN)
HOU TENGYAN (CN)
XU PENG (CN)
LI YUCHEN (CN)
WU JUAN (CN)
ZHAO JIYUN (CN)
REN QICHAO (CN)
JIN TIANYI (CN)
HOU TENGYAN (CN)
XU PENG (CN)
LI YUCHEN (CN)
Application Number:
PCT/CN2022/127341
Publication Date:
November 02, 2023
Filing Date:
October 25, 2022
Export Citation:
Assignee:
UNIV TAIYUAN TECHNOLOGY (CN)
International Classes:
F15B13/04; F16K5/04; F16K5/10; F16K5/12
Foreign References:
| CN114893465A | 2022-08-12 | |||
| CN203532376U | 2014-04-09 | |||
| CN103448224A | 2013-12-18 | |||
| CN110056384A | 2019-07-26 | |||
| CN207486154U | 2018-06-12 | |||
| CN114165265A | 2022-03-11 | |||
| CN1959165A | 2007-05-09 | |||
| JP2021021408A | 2021-02-18 |
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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