Title:
PUMP BODY STRUCTURE AND FOAM PUMP
Document Type and Number:
WIPO Patent Application WO/2023/092461
Kind Code:
A1
Abstract:
A pump body structure and a foam pump comprising same. The pump body structure comprises: an air intake tube (100) internally provided with an air intake cavity (110), with the bottom of the air intake tube (100) being provided with an air return hole (120); a liquid intake tube (200) connected to the bottom of the air intake tube (100); a lower cover (400) connected to the bottom of the air intake tube (100), with a cavity (401) being enclosed by the lower cover (400), an outer side wall of the liquid intake tube (200), and a bottom wall of the air intake tube (100), and an air return channel (402) being reserved between the lower cover (400) and the liquid intake tube (200); and an elastic stop valve (300) arranged in the cavity (401), the elastic stop valve (300) being configured to elastically seal the bottom of the air return hole (120). The elastic stop valve of the pump body structure is protected in the cavity, which can reduce the risk of hardening due to long-term immersion in a liquid.
Inventors:
ZOU JIANWEN (CN)
YANG WENQIANG (CN)
YANG WENQIANG (CN)
Application Number:
PCT/CN2021/133565
Publication Date:
June 01, 2023
Filing Date:
November 26, 2021
Export Citation:
Assignee:
FOSHAN CHANGTUO PACKAGING TECH CO LTD (CN)
International Classes:
B65D47/34; B05B11/00
Foreign References:
| CN108378744A | 2018-08-10 | |||
| CN208799138U | 2019-04-30 | |||
| CN202624901U | 2012-12-26 | |||
| CN205574594U | 2016-09-14 | |||
| CN213800996U | 2021-07-27 | |||
| US20100111735A1 | 2010-05-06 | |||
| EP1199105A1 | 2002-04-24 |
Attorney, Agent or Firm:
JIAQUAN IP LAW (CN)
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