Title:
FOOD PUMP HAVING EXTERNAL SPRING AND SAFETY OUTLET VALVE
Document Type and Number:
WIPO Patent Application WO/2022/052317
Kind Code:
A1
Abstract:
A food pump having an external spring and a safety outlet valve. The food pump comprises a pressing head (1), a primary column (2), a secondary column (3), a piston (4), a pump chamber (5), a spring (6) and a bottle locking cover (8). The pressing head (1) is installed on the primary column (2); the primary column (2) is arranged in the pump chamber (5); the secondary column (3) is connected to a lower end of the primary column (2); the piston (4) is arranged on outer sides of the primary column (2) and the secondary column (3) in a sleeving manner; a lock cover (9) capable of fixing the primary column (2) to the pump chamber (5) is fixed to the pump chamber (5); an outer side of an upper end of the lock cover (9) is provided with a cover flanging (91) which is turned outwards and then turned downwards to stretch outwards; an upper end of the pump chamber (5) is fixed to an inner side of the cover flanging (91) in an insertion manner; the lock cover (9) is provided with a locking opening (92) protruding upwards above the cover flanging (91); an outer side of the locking opening (92) is provided with outer threads (93); an upper end of the primary column (2) is provided with a locking flanging (21), which is turned outwards and then turned downwards to stretch outwards in order to be sleeved on an outer side of the locking opening (92); and an inner side of the locking flanging (21) is provided with inner threads (22) matching the outer threads (93) in a threaded manner, such that a pump core composed of the primary column (2), the secondary column (3), the piston (4), the pump chamber (5), the spring (6), a glass bead (7) and the lock cover (9) can be stored and transported independently, thereby matching different pressing heads (1) and bottle locking covers (8) according to requirements, such that the use thereof is flexible.
Inventors:
LIANG PEIHUI (CN)
ZHU MAOYONG (CN)
ZHANG YONGLEI (CN)
LIANG JINKAO (CN)
ZHU MAOYONG (CN)
ZHANG YONGLEI (CN)
LIANG JINKAO (CN)
Application Number:
PCT/CN2020/130795
Publication Date:
March 17, 2022
Filing Date:
November 23, 2020
Export Citation:
Assignee:
MAJESTY PACKAGING SYSTEMS LTD (CN)
International Classes:
B65D47/34; F16K15/14
Foreign References:
| CN112110030A | 2020-12-22 | |||
| CN110547582A | 2019-12-10 | |||
| CN104724378A | 2015-06-24 | |||
| CN1219916A | 1999-06-16 | |||
| CN206704853U | 2017-12-05 | |||
| CN204137527U | 2015-02-04 | |||
| CN105800071A | 2016-07-27 | |||
| CN208897686U | 2019-05-24 | |||
| CN111332599A | 2020-06-26 | |||
| JP2020083327A | 2020-06-04 |
Other References:
See also references of EP 4098579A4
Attorney, Agent or Firm:
ZHONGSHAN KECHUANG PATENT AGENT CO., LTD (CN)
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