Title:
DIAPHRAGM PUMP
Document Type and Number:
Japanese Patent JP2015031154
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve a sealing performance to a suction hole of a pump chamber.SOLUTION: A diaphragm pump 1 comprises: a pump chamber 35 formed by a diaphragm part 17 of a diaphragm 15 and enlarged and shrunk by a reciprocal movement of the diaphragm part 17; a partition plate 30 having a suction hole 32 for sucking fluid into the pump chamber 35 and a projection hole 62 for emitting the fluid in the pump chamber 35; an intake valve body 20 provided on the diaphragm part 17 for restraining back flow from the pump chamber 35 to the suction hole 32 of the fluid; and an emission valve body 60 for restraining the backflow of the fluid from emission hole 62 into the pump chamber 35. The intake valve body 20 projects integrally with the diaphragm 15 from an opening end 17b of the diaphragm part 17 so that it is faced to the pump chamber 35, and is formed into a bowl-like shape so that an outer peripheral edge 20a of the intake valve body 20 is curved upward to a lower face 30a of the partition plate 30.
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Inventors:
FURUKAWA AKIRA
Application Number:
JP2013158639A
Publication Date:
February 16, 2015
Filing Date:
July 31, 2013
Export Citation:
Assignee:
OKEN LTD
International Classes:
F04B45/04
Domestic Patent References:
| JP2012021481A | 2012-02-02 | |||
| JP2003269337A | 2003-09-25 |
Attorney, Agent or Firm:
Masaki Yamakawa
Shigeki Yamakawa
Shigeki Yamakawa