Valve accelerating type dispensing pump

摘要

A dispensing pump, and more particularly, a valve accelerating type dispensing pump that may be used in a process of manufacturing an electronic product and may dispense an accurate amount of a liquid, such as a liquid synthetic resin, at high speed. The present invention provides a valve accelerating type dispensing pump that can descend a valve rod at high speed and thus can dispense a liquid with high viscosity at high speed. The valve accelerating type dispensing pump can dispense an accurate amount of a liquid at high speed. Also, the valve accelerating type dispensing pump can dispense a liquid having high viscosity at high speed due to a fast descending speed of a valve rod.

主权项

1. A liquid dispensing pump comprising:
a pump body; a valve body comprising an inlet path to which liquid is supplied, a reservoir in which the liquid supplied via the inlet path is to be stored, and a discharge path through which the liquid stored in the reservoir is discharged, the valve body being installed at the pump body; a valve rod configured to pressurize the liquid stored in the reservoir of the valve body so that the liquid is discharged via the discharge path; an operating rod connected to the valve rod and configured to drive the valve rod to move relative to the valve body; a cam member comprising a through hole through which the operating rod passes and further comprising cam protrusions formed around the through hole, the cam protrusions having inclined surfaces on which a cam follower travels, the cam member being installed at the pump body and rotatable about a rotation axis; the cam follower comprising rollers configured to roll on the inclined surfaces of the cam protrusions when the cam member rotates, the cam follower coupled to the operating rod and configured to drive the valve rod to move relative to the valve body; a can follower retainer engaged with the cam follower while permitting angular movement of the cam follower relative to the cam follower retainer about the rotation axis within a predetermined angular rang; and the cam follower retainer integrated with the pump body and linearly movable toward the cam member; and an elastic member installed between the pump body and the cam follower retainer and configured to provide an elastic force to the cam follower retainer for pressing the cam follower retainer toward the cam member.