Radial plunger pump

Abstract

The invention discloses a radial plunger pump. The radial plunger pump comprises a pump assembly and a cam shaft of which the axis is perpendicular to the radial direction of the pump assembly. A low-pressure chamber and a high-pressure chamber which are used for liquid to go in and out and a plunger chamber formed by a plunger cylinder body are formed in the pump assembly, and the low-pressure chamber and the high-pressure chamber are communicated with the plunger chamber; the pump assembly further comprises a first high-speed switching valve used for controlling the conducting state of the low-pressure chamber and a second high-speed switching valve used for controlling the conducting state of the high-pressure chamber. The radial plunger pump further comprises an electronic control unit used for controlling the first high-speed switching valve and the second high-speed switching valve to open and close. According to the radial plunger pump, the liquid can be quickly controlled to go in and out of the radial plunger pump, the higher rated speed is achieved, reversing of liquid in-out can be achieved, drainage volume adjusting can be performed, the control rate is high, the response time is short, and a motor mode can be converted.

Description

technical field [0001] The invention relates to the hydraulic field, in particular to a radial piston pump. Background technique [0002] Radial piston pumps are widely used in the hydraulic field. Compared with other types of pumps, they have the advantages of high working pressure, small axial size, high working reliability and long service life. Existing radial plunger pumps are generally provided with a check valve at the oil inlet and outlet, and the pressure change generated by the movement of the plunger pushes the opening and closing of the check valve to realize the corresponding function of the pump. [0003] However, due to pressure changes to push the opening and closing of the check valve, the oil in and out of the radial piston pump cannot be quickly controlled, resulting in a low rated speed and no reversing, and due to the slow response time and the limitation of the control method, the displacement It cannot be changed and is not conducive to control, and i...

AI Technical Summary

Problems solved by technology

[0003] However, due to pressure changes to push the opening and closing of the check valve, the oil in and out of the radial piston pump cannot be quickly controlled, resulting in a low rated speed and no reversing, and due to the slow response time and the limitation of the control method, the displacement Can not be changed and is not conducive to control, the application range is small

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