High-viscosity liquid feeding booster pump

Abstract

The present disclosure relates to a high-viscosity liquid feeding booster pump. The booster pump includes: a body having an actuator mounted at one side thereof and a discharge valve formed at the other side thereof, the body being formed internally with a chamber; a plunger configured to be inserted into the body, and advanced or retracted relative to the body by the operation of the actuator to generate a compressive force or a suction force; and a charge valve disposed at an intake port formed at an upper portion of one side of the body in such a manner as to be spaced apart from a discharge valve, and configured to be opened or closed in cooperation with the advancing or retracting operation of the plunger to supply a fluid to the inside of the body or interrupt the supply of the fluid.

What is claimed is: 
     
         1 . A booster pump comprising:
 a body having an actuator mounted at one side thereof and a discharge valve formed at the other side thereof, the body being formed internally with a chamber;   a plunger configured to be inserted into the body, and advanced or retracted relative to the body by the operation of the actuator to generate a compressive force or a suction force; and   a charge valve disposed at an intake port formed at an upper portion of one side of the body in such a manner as to be spaced apart from a discharge valve, and configured to be opened or closed in cooperation with the advancing or retracting operation of the plunger to supply a fluid to the inside of the body or interrupt the supply of the fluid,   wherein the body includes a charged liquid feeding passage spirally formed on the inner peripheral surface of the chamber thereof in such a manner as to fluidically communicate with the intake port connected to the charge valve, and   wherein the charged liquid feeding passage has an outlet formed in proximity to the discharge valve.   
     
     
         2 . The booster pump according to  claim 1 , wherein the plunger comprises a front end formed protrudingly in a conical shape, and the chamber comprises a seat formed concavely in a conical shape at a bottom thereof in such a manner as to be in close contact with the front end of the plunger. 
     
     
         3 . The booster pump according to  claim 1 , wherein a connection part between the intake port and the chamber is chamfered to form a bent part.