Title:
VACUUM SWITCHING VALVE AND SUCTION SYSTEM USING VACUUM SWITCHING VALVE
Document Type and Number:
WIPO Patent Application WO/2023/087249
Kind Code:
A1
Abstract:
A vacuum switching valve and a suction system having a vacuum switching valve. The vacuum switching valve comprises: a valve body (10), the valve body (10) comprising a first end (11) and a second end (12), which are arranged opposite each other, the second end (12) being provided with an air inlet (121), an air outlet (122) and a through hole (123); a valve element (20), the valve element (20) being movably arranged in the valve body (10); a cylinder (30), the cylinder (30) being connected to the first end (11) and the valve element (20), and the cylinder (30) being used for driving the valve element (20) to move in the valve body (10), so as to close or open the air inlet (121); and a stopper (40), the stopper (40) passing through the through hole (123), the stopper (40) comprising a third end (41) and a fourth end (42), which are arranged opposite each other, the third end (41) being connected to the valve element (20), and the fourth end (42) being located on the side of the through hole (123) that is away from the valve element (20). The vacuum switching valve reduces, by improving the structure and function of a second cavity, the risk of a negative pressure channel being blocked by cuttings or dust.
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Inventors:
LU XUEYANG (CN)
ZHANG JINFENG (CN)
WU HUOZHONG (CN)
YANG HAO (CN)
ZHANG SHENGRONG (CN)
WU BEN (CN)
SUO GUANGKE (CN)
ZHONG XIAOJIN (CN)
LIU NIAN (CN)
ZHANG JINFENG (CN)
WU HUOZHONG (CN)
YANG HAO (CN)
ZHANG SHENGRONG (CN)
WU BEN (CN)
SUO GUANGKE (CN)
ZHONG XIAOJIN (CN)
LIU NIAN (CN)
Application Number:
PCT/CN2021/131764
Publication Date:
May 25, 2023
Filing Date:
November 19, 2021
Export Citation:
Assignee:
FUZHUN PREC TOOLING JIASHAN CO LTD (CN)
International Classes:
F16K51/02
Foreign References:
| CN202927134U | 2013-05-08 | |||
| CN203051843U | 2013-07-10 | |||
| CN105215701A | 2016-01-06 | |||
| CN202507074U | 2012-10-31 | |||
| CN108468816A | 2018-08-31 | |||
| KR20000021412A | 2000-04-25 | |||
| US6386218B1 | 2002-05-14 | |||
| JPH04119276A | 1992-04-20 |
Attorney, Agent or Firm:
SHENZHEN SCIENBIZIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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