Radial plunger pump

Abstract

The invention discloses a radial plunger pump. The radial plunger pump comprises a shell, an oil distribution shaft, a rotor and a transmission shaft used for driving the rotor to rotate, and furthercomprises a stator assembly arranged on the periphery of the rotor in a sleeving mode and a sliding base assembly used for adjusting the eccentric distance between the stator assembly and the rotor, the oil distribution shaft is arranged in the shell, the transmission shaft is arranged on the shell, the oil distribution shaft is provided with a first oil distribution window and a second oil distribution window which are used for balancing radial acting force borne by the oil distribution shaft, and the rotor is provided with a plurality of plungers corresponding to the first oil distribution window and the second oil distribution window. Through the design of radial stress balance of the oil distribution shaft, the problem of bending deformation of the oil distribution shaft is greatly solved, abrasion between the rotor and the oil distribution shaft is reduced, and the pressure grade of the radial plunger pump is improved.

Description

technical field [0001] The invention relates to the technical field of plunger pumps, in particular to a radial plunger pump. Background technique [0002] The plunger pump realizes oil suction and oil discharge through the change of the sealed working volume when the plunger reciprocates in the plunger hole. Because the plunger and the inner hole of the cylinder are both cylindrical surfaces, and the sliding surface has high matching precision, this type of pump is characterized by small leakage, high volumetric efficiency, and can work under high pressure conditions. [0003] In the prior art, the radial piston pump with axial flow distribution method will cause the wear of the distribution shaft due to the processing and assembly of the oil distribution shaft and the cylinder body, so that the flow distribution gap will continue to increase, and the leakage problem will become more and more serious, which will have a great impact on Volumetric efficiency of radial piston...

AI Technical Summary

Problems solved by technology

[0003]In the prior art, the radial piston pump with the axial flow distribution method will cause the wear of the distribution shaft due to the processing and assembly of the oil distribution shaft and the cylinder block, so that the The distribution gap is increasing, and the leakage problem is becoming more and more serious, which greatly affects the volumetric efficiency of the radial piston pump.

In particular, the oil distribution shaft is affected by the radial unbalanced hydraulic pressure, resulting in a large amount of bending deformation of the oil distribution shaft and large wear of the oil distribution shaft, which shortens the service life of the radial piston pump. The large size, complex structure and poor self-priming ability limit the improvement of the speed and pressure level of the radial piston pump.

Images