Title:
DIAPHRAGM PUMP AND PRESSURE ADJUSTMENT DEVICE
Document Type and Number:
Japanese Patent JP2021143646
Kind Code:
A
Abstract:
To provide a diaphragm pump capable of adjusting a pressure without using a creeping speed exhaust valve in an exhaust system.SOLUTION: A diaphragm pump includes: a diaphragm 31 having a cup-like pump portion 32; a pump chamber 34 applying the pump portion 32 as a part of a wall; and a driving mechanism 15 for increasing and decreasing a volume of the pump chamber 34. It further includes: a suction passage 49 connected to the pump chamber 34 at one end and connected to a fluid inlet 48 at the other end; and a suction valve 41 for opening and closing the suction passage 49. It further includes: a delivery passage 54 connected to the pump chamber 34 at one end and connected to a fluid delivery port 53 at the other end; and a delivery valve 42 for opening and closing the delivery passage 54. It furthermore includes a discharge passage 62 connected to the delivery passage 54 at one end and connected to a fluid discharge port 63 at the other end.SELECTED DRAWING: Figure 2
Inventors:
FUKAMI TADASHI
ITAHARA KAZUKI
ITAHARA KAZUKI
Application Number:
JP2020043930A
Publication Date:
September 24, 2021
Filing Date:
March 13, 2020
Export Citation:
Assignee:
OKEN LTD
International Classes:
F04B45/047; A61B5/0225; F04B39/08; F04B45/04; F04B49/06; F04B49/20; F04B49/22
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa