Title:
AIR-RETURN VALVE AND AIR-RETURN CONTAINER
Document Type and Number:
WIPO Patent Application WO/2023/232153
Kind Code:
A1
Abstract:
Disclosed are an air-return valve and an air-return container. The air-return valve (1) comprises a valve body and an air path formed along an axis of the valve body. The valve body comprises a valve lip portion (3) and a valve body portion, wherein the valve lip portion is located above the valve body portion, and is a boss enclosed by a diaphragm, and the wall thickness of the valve lip portion is less than that of the valve body portion; and the air path penetrates the valve body portion, and the valve lip portion is provided with an air gap (2) connected to the air path. The air gap is closed when the interior of a container is not under a negative pressure; and the air gap is open when the interior of the container is under a negative pressure. The air-return container (13) comprises a container body and an air-return valve, wherein the container body is provided with a mounting hole (14), and the air-return valve is in interference fit with the mounting hole. The air-return valve can have a one-way communication effect, and makes air return to the air-return container to compensate for a negative pressure in the air-return container, such that a user easily ingests liquid in the air-return container; and when used as a milk bottle, the air-return container can prevent infantile flatulence and milk oxidation.
Inventors:
ZENG XIANBING (CN)
Application Number:
PCT/CN2023/103298
Publication Date:
December 07, 2023
Filing Date:
June 28, 2023
Export Citation:
Assignee:
BEIJING SHENCHUANG CENTURY INFORMATION TECH CO LTD (CN)
International Classes:
F16K15/14; A61J9/04
Domestic Patent References:
| WO2021255725A1 | 2021-12-23 |
Foreign References:
| CN108814986A | 2018-11-16 | |||
| CN104224553A | 2014-12-24 | |||
| CN115355343A | 2022-11-18 | |||
| CN217815172U | 2022-11-15 | |||
| CN204170116U | 2015-02-25 | |||
| CN204275054U | 2015-04-22 | |||
| US20150231035A1 | 2015-08-20 |
Attorney, Agent or Firm:
BEIJING WUZHOUYANGHE & PARTNERS (CN)
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