MICRO DISCHARGE PUMP DEVICE

• Main Author: KAWAKAMI KATSURA
• Format: Patent
• Language: English
• Published: 26.09.2001
• Edition: 7
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICATING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To attain stabilization of discharge by enabling the continuous and fixed delivery to an oil supply part with no pulsation while fixedly holding a supply amount of oil per unit time by using a pump body of plunger type. SOLUTION: This pump device comprises a pump unit 30 provided in a base 20 to discharge oil and a drive part 70 provided in the base 20 to operate the pump unit 30, the pump unit 30 is constituted by providing a cylinder 33 having a discharge opening 31 discharging oil and a suction opening 32 sucking oil, a piston 36 protruding a rear end part 35 from the cylinder 33 to discharge oil from the discharge opening 31 at forward moving time to suck oil from the suction opening 32 at backward moving time, and a spring 37 energizing the piston 36 in a backward moving direction, this pump unit 30 is provided in a plural quantity in the base 20, the drive part 70 is constituted by providing a cam 71 successively pressing the rear end part 35 of the piston 36 forwardly advanced of a plurality of the pump units 30 in a manner wherein total delivery from a plurality of the pump units 30 is continued and fixed.