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Title:
ENVIRONMENTALLY FRIENDLY LIQUID PUMP
Document Type and Number:
WIPO Patent Application WO/2022/027926
Kind Code:
A1
Abstract:
An environmentally friendly liquid pump, comprising: a pump body (1), a pressure liquid cavity (101) and a valve member (102) being provided inside the pump body; a pressing pump head (2), the pressing pump head being provided with an inner rotation stopping structure (201); a coupling cover (3), the coupling cover being provided with an outer rotation stopping structure (301); an air inlet cavity (7) being provided between the coupling cover and the pressing pump head; a piston component (4), a liquid outlet cavity (401) being provided inside the piston component; the piston component being provided with a liquid inlet (406) for being communicated with or blocking the liquid outlet cavity and the pressure liquid cavity; and an elastic component (5), the elastic component being separated from the pressure liquid cavity; an air inlet channel (8) communicated with the air inlet cavity being provided inside the elastic component; and further comprising a locking sealing base (6). According to the environmentally friendly liquid pump, locking of the liquid filling operation is achieved. Assemblies are of all-plastic structures. A spring is separated from the pressure liquid cavity, and is not in contact with the liquid during the process of use, thereby avoiding the problem of performance degradation of the spring due to liquid contamination during the process of use.

Inventors:
WANG JINFENG (CN)
Application Number:
PCT/CN2021/070562
Publication Date:
February 10, 2022
Filing Date:
January 07, 2021
Export Citation:
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Assignee:
NINGBO SENG CZE MACROSPRAY CO LTD (CN)
International Classes:
B65D47/34; B05B11/00
Domestic Patent References:
WO2019238237A12019-12-19
Foreign References:
CN111924316A2020-11-13
CN212739098U2021-03-19
EP3120934A12017-01-25
CN109290087A2019-02-01
CN106794924A2017-05-31
CN102941967A2013-02-27
CN109896145A2019-06-18
Attorney, Agent or Firm:
HANGZHOU HANGCHENG PATENT ATTORNEY OFFICE CO., LTD. (CN)
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