A double-sided plate-type three-position four-way rotary valve with adjustable flow

Abstract

A flow-adjustable double side plate type three-position four-way rotary valve comprises a valve element, wherein valve plates are installed at two ends of the valve element in a matched mode, an adjustable boss is installed at the other end of each valve plate, the centers of the adjustable bosses are holed and are installed on an output end of a motor shaft of a built-in motor, a lead screw adjusting nut mechanism consists of an output lead screw shaft slippage nut of the built-in motor, wherein a lead screw shaft is arranged in a central hole of the motor shaft, the slippage nut can slide in an inner hole formed in an outer end cover, thrust ball bearings are connected between the slippage nut and the adjustable bosses, the outer end cover is connected with a valve sleeve, threads at two ends of the lead screw shaft are oppositely symmetric so that the adjustable bosses at two ends of the valve element can perform same-direction or reverse-direction linear motions, four small holes for springs to be arranged are formed in the adjustable bosses to ensure that the adjustable bosses always abut against the end face of the valve element in the axial moving process. The flow-adjustable double side plate type three-position four-way rotary valve controls on and off of hydraulic oil through matched rotations of the valve plates at two ends of the valve element, adjusts oil flow through the adjustable bosses and enables a hydraulic system to be simplified.

Description

technical field [0001] The invention belongs to the field of high-frequency hydraulic valves, in particular to a two-sided 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 fo...

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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