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Patent Searching and Data


Title:
ELECTROMAGNETIC DIRECTIONAL CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2017/097267
Kind Code:
A1
Abstract:
An electromagnetic directional control valve comprises a valve body (1), a valve spool (2), a valve body end cover (3), and an electromagnet assembly (4). The valve body (1) comprises a valve body main hole (1-8). One end of the valve spool (2) is sleeved with a spring seat (6). Two ends of the valve spool (2) are provided with third and fourth valve spool bosses (2-3, 2-4) respectively. An oil pressure balancing flow channel (1-10) is also arranged in the valve body (1). Two ends of the oil pressure balancing flow channel (1-10) are located outside two ends of an oil return flow channel (1-9) respectively, and the two ends of the oil pressure balancing flow channel (1-10) are in communication with the valve body main hole (1-8). Two ends of the valve body main hole (1-8) in the valve body are provided with fifth and sixth valve body steps (1-15, 1-16) axially, the fifth and sixth valve body steps (1-15, 1-16) being located outside the two ends of the oil return flow channel (1-9) and inside the two ends of the oil pressure balancing flow channel (1-10) respectively. The third valve spool boss (2-3) and the fourth valve spool boss (2-4) at the two ends of the valve spool (2) are in slidable fit with the corresponding fifth valve body step (1-15) and sixth valve body step (1-16) respectively. The other side of the spring seat (6) can abut against the sixth valve body step (1-16) and/or the fourth valve spool boss (2-4). The electromagnetic directional control valve can stop a contaminant from entering the electromagnet assembly, improve the reliability in use, and extend the service life.

Inventors:
WANG, Xiaokang (No. 11, Dongxin Road Niutang Town Industry Park, Wujin Distric, Changzhou Jiangsu 3, 213163, CN)
YUE, Yedong (WANG, XiaokangNo. 11, Dongxin Road, Niutang Town Industry Park, Wujin Distric, Changzhou Jiangsu 3, 213163, CN)
SHENG, Jianxin (WANG, XiaokangNo. 11, Dongxin Road, Niutang Town Industry Park, Wujin Distric, Changzhou Jiangsu 3, 213163, CN)
Application Number:
CN2016/111378
Publication Date:
June 15, 2017
Filing Date:
December 21, 2016
Export Citation:
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Assignee:
CHANGZHOU CANSTAR MECHANICAL AND ELECTRICAL COMPANY (WANG, XiaokangNo. 11, Dongxin Road, Niutang Town Industry Park, Wujin Distric, Changzhou Jiangsu 3, 213163, CN)
International Classes:
F16K11/07; F16K27/04
Foreign References:
CN105422914A2016-03-23
CN201982394U2011-09-21
CN104632738A2015-05-20
EP0633415B11996-07-03
US2693930A1954-11-09
Attorney, Agent or Firm:
CHANGZHOU TIANLONG PATENT AGENCY CO., LTD (ZHOU, JianguanRoom 1210, Floor 12, Hengyuan Building,180#, West GuanHe Road, Zhonglo, Changzhou Jiangsu 2, 213002, CN)
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