Title:
ADJUSTABLE FLEXIBLE CUT-OFF APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/253700
Kind Code:
A1
Abstract:
Disclosed is an adjustable flexible cut-off apparatus, comprising: a housing internally provided with a circulation channel passing through the axis thereof; and a rubber liner, the housing being sleeved outside the rubber liner, the rubber liner being located outside the circulation channel, the cross-sectional shape of the rubber liner being an arc, a fillable cavity being formed between a part of the inner wall of the housing and the outer wall of the rubber liner, the housing being provided with a feeding and discharging hole, and the feeding and discharging hole communicating with the fillable cavity. When the fillable cavity is filled with a medium, the portion of the rubber liner located at the fillable cavity is deformed toward the side distant from the cavity, and the circulation channel is narrowed until being cut off. The apparatus in the present invention can control the cut-off height of the rubber liner, and is simple in structure and wide in application range.
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| WO/2002/004849 | PINCH VALVE |
| WO/2011/015826 | AN INHALER |
| WO/2015/195692 | PINCH FLOW REGULATOR |
Inventors:
ZHOU CHAO (CN)
Application Number:
PCT/CN2020/096466
Publication Date:
December 24, 2020
Filing Date:
June 17, 2020
Export Citation:
Assignee:
WUHAN SHENGYU DRAINAGE SYSTEM CO LTD (CN)
International Classes:
F16K7/07
Foreign References:
| US3064935A | 1962-11-20 | |||
| CN1673590A | 2005-09-28 | |||
| EP1564457A1 | 2005-08-17 | |||
| CN110397152A | 2019-11-01 | |||
| CN2641404Y | 2004-09-15 |
Attorney, Agent or Firm:
BEIJING ZHONGDA DEQUAN IP AGENCY CO., LTD. (CN)
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