A single-side plate type three-position four-way rotary valve with adjustable flow

Abstract

A unilateral plate type three-position four-way rotary valve with adjustable flow, including a driving motor, the output shaft of the driving motor is connected to the drive shaft through a star gear reducer, a rotating arm sleeve, and one end of the valve core is connected to the rotating arm sleeve , the other end fits with the valve plate, the drive shaft is connected with the adjustable boss, the adjustable boss is connected with the valve plate through a groove, the driving motor is fixed on the left end cover, the adjusting motor is fixed on the right end cover, and the adjusting motor The output shaft of the screw is a lead screw, and the sliding nut of the lead screw can move back and forth in the inner cylindrical groove of the right end cover. The adjustable boss always presses the valve plate against the end face of the valve core during the axial movement, and the driving part Using servo motor plus planetary gear reducer, the present invention improves the control precision and can adjust the reduction ratio, the adjustable boss and the adjustable screw nut mechanism can easily adjust the flow and close the valve, realize the integration of flow adjustment, and simplify the hydraulic system .

Description

technical field [0001] The invention belongs to the field of high-frequency hydraulic valves, in particular to a single-side plate type three-position four-way rotary valve with adjustable flow. Background technique [0002] In the late 1970s, the development of electronic circuit control technology enabled a series of electronically controlled drives such as electromagnets to develop rapidly, thus promoting the development of high-speed switching valves. The traditional hydraulic valve technology cannot meet the high-frequency requirements of high-speed switching valves, and also puts forward new requirements for the structural design and driving devices of high-speed switching valves. The key technology of high-speed switching valves is to increase the switching frequency while minimizing energy loss and driving power. Traditional rotary valves can be operated manually or motorized. Because the radial force of the rotary valve is unbalanced, the operating force required ...

AI Technical Summary

Problems solved by technology

Because the radial force of the rotary valve is unbalanced, the operating force required for the rotary valve core is relatively large, and the sealing performance is poor, so it is generally used in low-pressure and low-flow situations, or as a pilot valve, especially in dynamic fatigue tests that require high-frequency vibration. On the machine, the actuator needs high-frequency and stable action. At present, imported high-frequency valves are used, which are expensive and limited.

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