Title:
ALL-PLASTIC PRESSING PUMP
Document Type and Number:
WIPO Patent Application WO/2022/252593
Kind Code:
A1
Abstract:
Disclosed in the present invention is an all-plastic pressing pump, comprising a pressing head, an atomizing nozzle, a pump body, a screw thread, a pump rod, a pump bead, a spring and a protective cover which are made of plastic. A lower end of the pump rod is provided with a sliding sealing part which is inserted into the pump body and slidably and sealedly connected to the inner wall of the pump body; a middle hole through which the pump rod passes is formed inside the screw thread; a conical table sealing part is arranged above the sliding sealing part on the pump rod; the conical table sealing part is in sealedly connected to the side wall of the middle hole during bouncing; a gas supplementing channel is formed between the pump body and the screw thread; a liquid outlet channel is formed between the pressing head and the pump rod; when the pressing head is pressed down, the liquid outlet channel is opened; when the pressing head bounces, a switch structure of the liquid outlet channel is blocked; the top of the screw thread is provided with a guide sleeve which is fitted over the outer side of the pressing head upwards; an anti-falling protrusion is provided on the upper end of the guide sleeve; an anti-falling hook capable of being hooked on the anti-falling protrusion is provided on the pressing head; a spring is arranged on the inner side of the guide sleeve and pressed between the pressing head and the top of the screw thread; the spring is a plastic spring tube which has openings on the upper and lower ends and is sealed on the side surface. The structure is simple.
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/CN2021/141602
Publication Date:
December 08, 2022
Filing Date:
December 27, 2021
Export Citation:
Assignee:
MAJESTY PACKAGING SYSTEM CO LTD (CN)
International Classes:
B65D47/34; B05B11/00
Foreign References:
| CN211887509U | 2020-11-10 | |||
| CN111746929A | 2020-10-09 | |||
| CN109896145A | 2019-06-18 | |||
| CN113212965A | 2021-08-06 | |||
| CN215099331U | 2021-12-10 | |||
| CN212386936U | 2021-01-22 | |||
| CN204896181U | 2015-12-23 | |||
| JPH1076196A | 1998-03-24 | |||
| CN202110603998A | 2021-05-31 |
Attorney, Agent or Firm:
CHANG TSI & PARTNERS (CN)
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