Pressurizing pump structure

Abstract

A pressurizing pump structure includes a cover, a flow guide, a pump and a main axle. The flow guide is interposed between the cover and the pump. The main axle is mounted inside the pump. The pump has several pressurizing chambers, each of which has one or more pressurizing tanks. Each of the pressurizing tanks has a piston. The main axle has an eccentric part going into the pump for driving the pistons in the pressurizing tanks to make reciprocal motions as the main axle rotates, thereby outputting fluid with a higher pressure.

What is claimed is: 
     
         1 . A pressurizing pump structure comprising a cover, a flow guide, a pump and a main axle, characterized in that:
 the cover has an inlet and an outlet, with the flow guide interposed between the cover and the pump;   the flow guide has a first passage in fluid communications with the inlet and a second passage in fluid communications with the outlet;   the pump has a plurality of pressurizing chambers, each of which has an incoming compartment, an outgoing compartment, and at least one pressurizing tank; wherein the pressurizing tank has a piston, the incoming compartment and the outgoing compartment are in fluid communications with the pressurizing tank, the incoming compartment is in fluid communications with the first passage and the outgoing compartment to the second passage, a first check valve is interposed between the incoming compartment and the first passage for the fluid to flow in one way into the incoming compartment, and a second check valve is interposed between the outgoing compartment and the second passage for the fluid to flow in one way into the second passage; and   the main axle goes through the inside of the pump and is formed with an eccentric part off the center thereof; wherein the eccentric part is mounted with a bearing that is further mounted with a transmission element, the transmission element is pivotally provided with a plurality of connecting shafts, the other end of each of the connecting shafts is pivotally connected with the piston of the corresponding pressurizing chamber, the rotation of the main axle drives the transmission element to swing eccentrically, and the connecting shafts pivotally connected to the transmission element drive the pistons to perform a reciprocal motion inside the corresponding pressurizing tanks, thereby increasing the pressure of the output fluid.   
     
     
         2 . The pressurizing pump structure of  claim 1 , wherein the first passage is located on the side of the flow guide facing the pump, the flow guide is formed with a first connecting hole via which the first passage is connected to the inlet, the second passage is located on the side of the flow guide facing the cover, the second passage is formed with at least one second connecting hole going through the flow guide for the second passage to connect to the outgoing compartment. 
     
     
         3 . The pressurizing pump structure of  claim 1 , wherein the inner wall of each of the pressurizing tanks is provided with at least one check ring with a V-shaped cross section, and the check ring urges against the surrounding of the corresponding piston. 
     
     
         4 . The pressurizing pump structure of  claim 1 , wherein the inside of the pump is formed with three equally spaced pressurizing chambers, each of the pressurizing chambers has two pressurizing tanks, and each of the pressurizing tanks is in fluid communications with the corresponding incoming compartment and outgoing compartment. 
     
     
         5 . The pressurizing pump structure of  claim 1 , wherein one end of the main axle extends to the outside of the pump for the connection of a driving device to rotate the main axle. 
     
     
         6 . The pressurizing pump structure of  claim 1 , wherein the bearing has an inner ring and an outer ring, the inner ring of the bearing is in touch with the surrounding of the eccentric part of the main axle, and the outer ring of the bearing is in touch with the inner rim of the transmission element. 
     
     
         7 . The pressurizing pump structure of  claim 1 , wherein the transmission element has a pivotal connecting part opposite to each of the pressurizing tanks of each of the pressurizing chambers, one end of each of the connecting shafts is pivotally connected to the pivotal connecting part, the other end of each of the connecting shafts is pivotally connected to the piston of the corresponding pressurizing tank.