Compensation type micro-control solenoid valve

Abstract

The invention provides a compensation type micro-control solenoid valve which is composed of a main driving coil, a motion compensation coil, a fixed iron core, a movable iron core, a control circuit and the like. The motion compensation coil and the main driving coil are arranged in parallel; the control circuit controls the motion compensation coil to carry out demagnetization operation; the fixed iron core and the movable iron core are located in the coil; the fixed iron core is fixed with a fixed shell through a locking screw; the movable iron core is located below the fixed iron core; a reed and a membrane are fixed on the movable iron core through a pressing screw; a screw head of the pressing screw is located between the membrane and the reed; a magnetic conduction seat is mounted at the lower end of the shell and the magnetic conduction seat is provided with clamping positions which correspond to the reed and the membrane; the clamping position matched with the membrane is a sealing clamping position. The compensation type micro-control solenoid valve forcedly eliminates the disaster result caused by residual magnetism of a flexible magnetic material of an electromagnetic adjusting valve. The control precision, the flexibility and the stability of the electromagnetic adjusting valve are improved. A stainless steel membrane and a non-linear elastic property reed are adopted, and a resistance vibration-absorption hole is innovatively arranged, so that the influences on controlling the solenoid valve by backpressure fluctuation are greatly reduced.

Description

technical field [0001] The invention belongs to the field of electrical components, and relates to a solenoid valve, in particular to a solenoid valve applied to precise control. Background technique [0002] In the prior art, the solenoid valve controls the opening and closing of the valve port through an electromagnet, and the elastic element used is generally a reed or a compression spring. Since the electromagnetic force is nonlinear, the force generated by the electromagnet has a nonlinear relationship with the magnitude of the input voltage, and the ideal proportional control valve hopes to achieve the change of the magnetic gap proportional to the change of the voltage as much as possible, so as to achieve the control voltage Precisely control the opening and closing size of the solenoid valve, so as to achieve precise control of the flow. The solenoid valve in the prior art is far from the requirements of the ideal proportional regulating valve due to its design lim...

AI Technical Summary

Problems solved by technology

Because the response of the solenoid valve to the increase and decrease of the magnetic excitation is completely unbalanced, at present, only the control speed can be fully reduced, but the control process cannot be solved.

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