Proportional solenoid for controlling hydraulic valve spool position

Abstract

The invention discloses a proportional electromagnet for controlling a position of a valve core of a hydraulic valve. The proportional electromagnet comprises an electromagneticinduction component and an armature component, wherein the armature component is arranged in the electromagneticinduction component and is in sliding fit with the electromagneticinduction component; the proportional electromagnet is also provided with a hydraulic passage which is communicated with an upper end face and a lower end face of the armature component and forms a hydraulic loop with a valve core cavity of the hydraulic valve; a hydraulic loop is formed between the upper end face as well as the lower end face of the armature component and the valve core cavity of thehydraulic valve, so that the upper end face as well as the lower end face of the armature component and the valve core cavity of thehydraulic valve are hydraulically balanced, hydraulic disturbance is effectively eliminated, the output power of the proportional electromagnet is stably output, and the positional relation of the valve core and a valve seat of the hydraulic valve is effectively controlled; and thus, the flow velocity of oil in the hydraulic valve is controlled, the hydraulic pressure of the oil in an executing element of the hydraulic system is stably adjusted, and the hydraulic equipment stably works.

Description

technical field

[0001] The invention relates to an electromagnet, in particular to a proportional electromagnet for controlling the position of a valve core of a hydraulic valve. Background technique

[0002] Large-scale hydraulic equipment such as injection molding machines, excavators, and cranes require the use of hydraulic systems, which consist of power components, actuators, control components, auxiliary components and hydraulic oil. The basic working principle of the hydraulic system is: after the hydraulic oil is boosted or depressurized by the power element, it flows into the control element, and after being controlled by the control element, it is input into the actuator in a smooth and orderly manner, and the actuator converts hydraulic energy into mechanical energy. output. The control element is usually a proportional hydraulic valve, and the proportional hydraulic valve is formed by assembling a hydraulic valve and a proportional electromagnet. Proportional e...

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