Title:
PUMP DEVICE
Document Type and Number:
Japanese Patent JP2020012378
Kind Code:
A
Abstract:
To solve the problem that it is hard to handle a tool such as a spanner in a narrow construction space although the tool is required for rotating an adjusting screw which is provided in a pressure control device, and the problem that, when a worker who is unskilled in handling a pump device performs control based on water flow sound generated from the pump device, a determination on the basis of the sound cannot be sufficiently made, pumping is disabled and it may be erroneously recognized as a product defect.SOLUTION: The present invention relates to a pump device which is configured by combining a rotary pump and a jet pump and to which a pressure control device is fitted. When adjusting the pressure control device, no tool is used and an adjusting dial that is manually adjustable is used.SELECTED DRAWING: Figure 6
Inventors:
SASAYAMA DAIKAN
OWADA MICHIO
NOMURA TETSUYA
OWADA MICHIO
NOMURA TETSUYA
Application Number:
JP2018132849A
Publication Date:
January 23, 2020
Filing Date:
July 13, 2018
Export Citation:
Assignee:
HITACHI GLOBAL LIFE SOLUTIONS INC
International Classes:
F04D15/00
Attorney, Agent or Firm:
Yuji Toda