Title:
【発明の名称】往復ポンプ
Document Type and Number:
Japanese Patent JP2852715
Kind Code:
B2
Abstract:
PURPOSE:To feed chemical liquid under pressure to a nozzle due to pressure of pulsation and make injection pressure uniform by making a reciprocating member advance and retract toward a pump chamber and discharging chemical liquid from a plural number of discharge ports through a discharge valve which allows the flow of liquid only in the direction of the discharge ports. CONSTITUTION:A crank shaft 18 is rotated due to rotation power of an engine to reciprocate a plunger 20 of each plunger pump 26 of a three-throw plunger pump 10. Thus, capacity of a pump chamber 42 is increased or decreased, and the movement toward the increase of capacity becomes a suction process. A suction valve 40 is opened, a discharge valve 54 is closed, and chemical liquid is suctioned into the pump chamber 42. Then, the movement toward the decrease of capacity of the pump chamber 42 becomes a discharge process. The suction valve 40 is closed, the discharge valve 54 is opened, and chemical liquid in the pump chamber 42 is discharged from a discharge port 52. And, liquid pressure at the discharge port 52 pulsates.
Inventors:
KAWAGUCHI HIROSUKE
Application Number:
JP5932793A
Publication Date:
February 03, 1999
Filing Date:
February 25, 1993
Export Citation:
Assignee:
MARUYAMA SEISAKUSHO KK
International Classes:
B05B17/00; B05B11/00; F04B9/04; F04B19/00; F04B53/10; (IPC1-7): F04B9/04; B05B11/00; F04B53/10
Domestic Patent References:
| JP53137411A | ||||
| JP61204978U | ||||
| JP61204977U |
Attorney, Agent or Firm:
Hiroshi Ishiyama (1 person outside)