CN2076704U

CN2076704U - Energy saving demagnetiser

Info

Publication number: CN2076704U
Application number: CN 90204488
Authority: CN
Inventors: 李荣生
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-04-14
Filing date: 1990-04-14
Publication date: 1991-05-08

Abstract

The utility model relates to an improved energy saving demagnetiser. The inductance L of a traditional demagnetiser is connected in parallel with a harmonic oscillation capacitor C-[1], and the utility model can achieve the demagnetizing purpose utilizing a damped magnetic field generated by the damped oscillation generated by the L and the C-[1]. A circuit can be power on and cut off, which is controlled by the controlled silicon. The utility model has the advantages of simple structure and low cost. The utility model can save the electric energy by about 90%. The improved energy saving demagnetiser can widely replace the existing ordinary demagnetiser.

Description

Energy saving demagnetiser

A kind of improved, be used for the Energy saving demagnetiser that ferromagnetic class workpiece is eliminated remanent magnetism, belong to electric oscillation device field.

At present, the demagnetizer that generally adopts in the research and production field is that the inductance coil with a ribbon core passes to alternating current, produces an alternating magnetic field, when workpiece that demagnetizes when need or article (ferromagnetic unit) are put into and shifted out thereupon, can reach the purpose of demagnetization.A workpiece is processed in the continued operation often owing to demagnetize, and demagnetizes one, so this demagnetizer is continuously an energising character.In the intermittence of demagnetization operation, also still consuming electric energy.

The purpose of this utility model is a kind of energy-saving demagnetizer of development, and it can finish the demagnetization operation reliably, is again to continue power supply, and reaches the purpose of saves energy with this.

The purpose of this utility model is to be in parallel by the electric capacity with a demagnetizer inductance and a suitable appearance value, makes it produce attenuated oscillation after the outage, demagnetizes to workpiece in consequent decay magnetic field.Because this is novel to be discontinuous power supply, and conduction time is much smaller than power-off time, so power consumption greatly reduces.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is an electrical schematic diagram of the present utility model.

Fig. 2 is the core configuration schematic diagram.

The utility model is by the inductance L of ribbon core, the parallel resonance capacitor C ₁, contactor K, control circuit break-make controllable silicon T1 and circuits for triggering thereof form.Wherein, inductance L and capacitor C ₁Be in parallel controllable silicon T ₁Be serially connected with in the middle of the main circuit, when it cuts off the power supply, L, C ₁Promptly produce vibration, owing to leak the existence of resistance in resistance in the inductance and the electric capacity, this vibration decays, also decay by the magnetic field that this vibration produced, like this, can be the ferromagnetic unit demagnetization that places this magnetic field.

The silicon controlled circuits for triggering adopt a multivibrator, and multivibrator is by transistor T 2, T3, collector resistance R1, R4, base resistance R2, R3, coupling capacitance C ₃, C2, the wiring by common multivibrator between them is linked together.Controllable silicon trigger electrode loop is serially connected between R1 and the power supply+15V.

Circuits for triggering also can adopt the circuits for triggering of other types.

Demagnetizer only needs to handle several workpiece sometimes in practical operation, will handle a collection of part sometimes, for adapting to " crawl " and " continuously " two kinds of mode of operations, is being connected in series button AN and SN in the current supply circuit of circuits for triggering.Wherein, AN is for often driving button, and SN is the button of band locking device, and they connect together.

The trigger pulse width of multivibrator is adjustable second at 0-1, and generally with pulsewidth 10-20 millisecond, frequency is advisable for 1 hertz.At this moment, the resistance of R1, R4 is between 1.2-2.4K, and R2 is between 47-62K, and R3 is that resistance is the potentiometer of 47K.

Capacitor C ₁The appearance value determine according to the inductance value of inductance L, should make L, C ₁The antiresonant circuit of forming is the pure resistance attitude and is advisable.

Iron core of the present utility model still adopts " mountain " font or " mouth " font iron core (1), and a topped in the above nonferromagnetic table top (2) needs the workpiece of demagnetization promptly to be placed on the table top.

Fig. 1 single-phase demagnetizer circuit diagram that drawn, concerning the three-phase demagnetizer, its principle is identical therewith.

During operation, the K that closes a switch, the part that will demagnetize places on the table top (2), presses button AN, workpiece remanent magnetism can be returned.If bulk of components, promptly press the button SN, produce periodic attenuated oscillation in the main circuit this moment, will constantly place the workpiece remanent magnetism on the table top to return, because only account for about 5% of cycle of oscillation the conduction time during this is novel, so its economize on electricity reaches more than 90%.And, be interrupted energising owing to this is novel, all optional upper limit of using of the electric current allowable of lead and magnetic flux density, thus can save iron core steel disc consumption and lead consumption greatly.

The utility model is simple in structure, and is easy to operate, and cost is low, can extensively replace existing demagnetizer.

Claims

1, a kind of improved Energy saving demagnetiser, it comprises contactor K, the inductance coil L of ribbon core and place the table top (2) of demagnetization part is characterized in that, resonant capacitance C in parallel on inductance L ₁, the controllable silicon T1 of the control circuit break-make of in main circuit, having connected, the trigger electrode of T1 is controlled by circuits for triggering.

2, Energy saving demagnetiser according to claim 1, it is characterized in that circuits for triggering are a multivibrator, multivibrator is by transistor T 2, T3, collector resistance R1, R4, base resistance R2, R3, coupling capacitance C3, C2, silicon controlled trigger electrode loop is serially connected between power supply+15V and the resistance R 1.

3, Energy saving demagnetiser according to claim 1 and 2 is characterized in that, the SN of the electric power loop serial connection button AN of multivibrator, and AN and SN connect together.