Title:
PUMP
Document Type and Number:
WIPO Patent Application WO/2017/107873
Kind Code:
A1
Abstract:
Disclosed is a pump, comprising a pump body (1) with a pump cavity (2), wherein a push-pull rod (3) capable of being in a reciprocating motion is arranged in the pump cavity (2); the pump body (1) is provided with two tubular cavities (51, 52) in communication with the pump cavity (2), with one end of each tubular cavity (51, 52) being in communication with the pump cavity (2), and with the other end leading to the outside of the pump body (1); an accommodation cavity (61, 62) for the placement of a valve core (41, 42) is provided within each tubular cavity (51, 52), the valve core (41, 42) can move within the accommodation cavity (61, 62) without coming out of same, with one end of the accommodation cavity (61, 62) being in communication with the tubular cavity (51, 52) through an access port (81, 82) to lead to the pump cavity (2), and with the other end being in communication with the tubular cavity (51, 52) through an outlet (71, 72) to lead same to the outside of the pump body (1); and one of the valve cores (41, 42) can completely close the access port (81)/outlet (72) of the respective accommodation cavity (61, 62), but cannot completely close the outlet (71)/access port (82) of the respective accommodation cavity (61, 62), and the other valve core (42, 41) can completely close the outlet (72)/access port (81) of the respective accommodation cavity (61, 62), but cannot completely close the access port (82)/outlet (71) of the respective accommodation cavity (61, 62). That is, the different valve cores (41, 42) can only close one end of the respective accommodation cavity (61, 62), and cannot close different accommodation cavities (61, 62) in the same direction, thereby realizing the pressurization of liquid.
Inventors:
LUO FENGLING (CN)
Application Number:
PCT/CN2016/110561
Publication Date:
June 29, 2017
Filing Date:
December 17, 2016
Export Citation:
Assignee:
LUO FENGLING (CN)
International Classes:
F04B53/10
Foreign References:
| CN103038552A | 2013-04-10 | |||
| CN104265619A | 2015-01-07 | |||
| JP2006250835A | 2006-09-21 | |||
| CN2177105Y | 1994-09-14 | |||
| US3620653A | 1971-11-16 | |||
| US4622990A | 1986-11-18 |
Attorney, Agent or Firm:
SHENZHEN QIANNA PATENT AGENCY LTD (CN)
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