Two-dimensional tapered roller piston pump

Abstract

A two-dimensional tapered roller piston pump, comprises a pump body (1), the pump body (1) being provided with a liquid absorption hole and a liquid discharging hole, a pump unit being provided in the pump body (1), and the pump unit being connected to a motor; the pump unit comprises a cylinder body (2) fixed in the pump body (1), a piston (3) being provided in the cylinder body (2), a central axis of the cylinder body (2) coinciding with a central axis of the piston (3), each end of the piston (3) being provided with a trigger means which drives the piston (3) to move axially so as to trigger the volume change of a working chamber, the direction of movement of the piston (3), driven by the trigger means on two ends of the piston (3), being opposite. Guide tracks (4, 5) and tapered rollers (7, 9) of the piston pump linearly contact each other, increasing the contact area while rolling, reducing the contact stress, effectively avoiding slipping, and prolonging the working life of the contact components; moreover, a lubrication chamber and the working chamber are hermetically separated, achieving oil-water separation, which is not only applicable for oil mediums, but also applicable for aqueous mediums, widening the application range.

Description

technical field [0001] The invention relates to a two-dimensional tapered roller piston pump, belonging to hydraulic pumps and hydraulic motors in the field of fluid transmission and control. Background technique [0002] The plunger (piston) pump uses a plunger (piston) and a cylinder block as the main working components. When the plunger (piston) reciprocates in the plunger (piston) hole of the cylinder, the volume of the closed working volume chamber composed of the plunger (piston) and the cylinder changes, and the suction and discharge process is completed. According to the different arrangements of the plunger (piston) in the cylinder, the plunger (piston) pump is divided into two categories: radial type and axial type. [0003] The traditional common axial plunger (piston) pump relies on the reciprocating movement of the plunger (piston) in the cylinder to change the volume of the sealed working chamber to achieve oil suction and pressure. There are many relatively ...

AI Technical Summary

Problems solved by technology

There are many relatively moving parts inside, high requirements on material and machining accuracy, sensitive to oil pollution, high requirements and costs for processing, use, and maintenance, and expensive; the cylinder rotates with the transmission shaft, and the moment of inertia is large, resulting in The response speed of start, stop, and speed regulation is slow, which is not conducive to controlling the output flow of the pump through speed regulation; there are many friction pairs in the cylinder body, and the cylinder temperature rises faster under high-speed rotation, and the valve plate, plunger (piston) The wear and tear of other parts directly affects the service life and durability of the pump

In addition, due to the limitation of the working principle of the plunger (piston) pump itself, each plunger (piston) can only achieve one oil suction and one oil discharge when the transmission shaft rotates one revolution. Design the flow distribution mechanism to complete the switching of oil suction and discharge in the working chamber

[0004] The lubricating system of the existing plunger pump is connected with the infusion system, and the transported liquid is used as a lubricant. This structure is only suitable for transporting oil, and is not suitable for use in water medium environments.

Images