CN220189366U - Electromagnet residual magnetism eliminator - Google Patents

Abstract

The utility model discloses an electromagnet remanence eliminator, which relates to the technical field of electromagnet remanence eliminator and comprises a relay main body, a unidirectional diode, a relay coil, a resistor, a capacitor and an electromagnet main body, wherein the surface of the relay main body is connected with the unidirectional diode, the relay coil is installed in the relay main body, the surface of the relay main body is connected with the resistor through a contact pin, the capacitor is connected above the relay main body through the contact pin, and the relay main body is connected with the electromagnet main body in parallel through an external circuit. When the electromagnet remanence eliminator is electrified, the switch K1 is closed, a resistor is connected in series, the resistor is used as a buffer in the initial state of the capacitor, when the switch K1 is opened, the coil of the electromagnet remanence eliminator body is powered off, the relay coil does not work, the relay body does not reduce the attraction of the electromagnet body while eliminating the remanence, no additional power supply is needed, and the electromagnet body is only connected in parallel, so that the remanence eliminating effect is good.

Description

Electromagnet residual magnetism eliminator

Technical Field

The utility model relates to the technical field of electromagnet remanence cancellers, in particular to an electromagnet remanence canceller.

Background

An electromagnet is a device for generating electromagnetic by electrifying, and a conductive winding matched with the power of the electromagnet is wound outside an iron core, and the coil with current has magnetism like a magnet.

The electromagnet produced under the prior art generally has the problem of remanence, because all materials for manufacturing the electromagnet cannot realize the fact that the electromagnet is powered off and has no remanence, generally, about 10% of residual magnetic force exists, the electromagnet is disadvantageous to the use, particularly the electromagnet of a sucker type, when people use the electromagnet for carrying workpieces, the workpieces cannot be released after power off due to the problem of remanence, the conventional method for solving the remanence is a mode of adding a top needle or breaking a magnetic loop, and the method has the defects of reducing the attraction force of the electromagnet and poor demagnetizing effect.

Disclosure of Invention

The utility model aims to provide an electromagnet remanence eliminator to solve the problem that the electromagnet remanence eliminating effect is poor in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the electromagnet remanence eliminator comprises a relay main body, a unidirectional diode, a relay coil, a resistor, a capacitor and an electromagnet main body, wherein the unidirectional diode is connected to the surface of the relay main body, the relay coil is installed in the relay main body, the resistor is connected to the surface of the relay main body through a contact pin, the capacitor is connected to the upper side of the relay main body through the contact pin, and the electromagnet main body is connected in parallel through an external circuit.

Preferably, the relay body is internally provided with a first contact, a second contact, a third contact, a fourth contact, a fifth contact, a sixth contact, a seventh contact and an eighth contact respectively.

Preferably, the shape and the size of the electromagnet main body can be switched at will.

Preferably, the capacity of the capacitor is matched with the magnetic force of the electromagnet body.

Preferably, the power supply voltage of the relay main body can be selected according to actual conditions.

Preferably, a wire is connected between the electromagnet main body and the relay main body.

Preferably, the seventh contact and the eighth contact are connected in parallel to two ends of the relay coil.

Compared with the prior art, the utility model has the beneficial effects that: when the switch K1 is opened, the main body coil of the electromagnet remanence eliminator is powered off, the relay coil does not work, the third contact is disconnected from the fourth contact, the fifth contact is connected with the first contact, the sixth contact is connected with the fourth contact, the third contact is disconnected from the fourth contact, the fifth contact is connected with the first contact, the sixth contact is connected with the second contact, the capacitor discharges, the contact which is originally connected with the power "+" pole is communicated with the capacitor "-" pole, the current direction released by the capacitor is just opposite to the current direction when the electromagnet main body works, the capacitor releases opposite current to generate a reverse magnetic field in the electromagnet main body, and the reverse magnetic field is opposite to the residual magnetic field, so that the reverse current of the capacitor is prevented from flowing into the relay coil when the unidirectional diode acts on, the electric quantity of the capacitor is consumed, and the reverse line is prevented from being connected, even if the relay main body is not damaged. The relay main body does not reduce the attraction force of the electromagnet main body while eliminating the remanence, and the remanence is eliminated immediately after power failure, and the relay main body only needs to be connected to the electromagnet main body in parallel without additionally adding a power supply, so that the remanence eliminating effect is better.

Drawings

FIG. 1 is a schematic view of a front view of the present utility model in a cut-away configuration;

FIG. 2 is a schematic diagram of the circuit of the electromagnetic residual magnetic eliminator of the present utility model when energized;

fig. 3 is a schematic circuit diagram of the electromagnet remanence eliminator in the present utility model when power is off.

In the figure: 1. a relay body; 2. a unidirectional diode; 3. a relay coil; 4. a resistor; 5. a capacitor; 6. an electromagnet body; 7. a first contact; 8. a second contact; 9. a third contact; 10. a fourth contact; 11. a fifth contact; 12. a sixth contact; 13. a seventh contact; 14. and an eighth contact.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, 2 and 3, the present utility model provides the following technical solutions: the electromagnet remanence eliminator comprises a relay main body 1, a unidirectional diode 2, a relay coil 3, a resistor 4, a capacitor 5 and an electromagnet main body 6, wherein the unidirectional diode 2 is connected to the surface of the relay main body 1, the relay coil 3 is installed inside the relay main body 1, the resistor 4 is connected to the surface of the relay main body 1 through a contact pin, the capacitor 5 is connected to the upper side of the relay main body 1 through a contact pin, the electromagnet main body 6 is connected in parallel with the relay main body 1 through an external circuit, a first contact 7, a second contact 8, a third contact 9, a fourth contact 10, a fifth contact 11, a sixth contact 12, a seventh contact 13 and an eighth contact 14 are respectively installed inside the relay main body 1, the shape and the size of the electromagnet main body 6 can be switched at will, the capacity of the capacitor 5 is matched with the magnetic force of the electromagnet main body 6, the power supply voltage of the relay main body 1 can be used for selecting corresponding voltage according to practical conditions, a wire is connected between the electromagnet main body 6 and the relay main body 1, and the two ends of the relay main body 3 are connected with a seventh contact 13 and an eighth contact 14 in parallel.

In the specific implementation, when the electromagnet remanence eliminator is electrified, the switch K1 is closed, the resistor 4 is connected in series, the resistor 4 is used as buffer in the initial state of the capacitor 5, the short circuit phenomenon cannot be generated immediately, the relay coil 3 works preferentially, the first contact 7 and the second contact 8 are disconnected, the fifth contact 11 is communicated with the third contact 9, the sixth contact 12 is communicated with the fourth contact 10, the capacitor 5 is charged positively, when the switch K1 is opened, the electromagnet remanence eliminator main body coil is powered off, the relay coil 3 does not work, the third contact 9 is disconnected with the fourth contact 10, the fifth contact 11 is communicated with the first contact 7, the sixth contact 12 is communicated with the second contact 8, the capacitor 5 is discharged, the contact originally powered on with the "+" pole is communicated with the capacitor 5"-" pole, the current direction released by the capacitor 5 is just opposite to the current direction when the electromagnet main body 6 works, because the relay body 1 and the electromagnet body 6 are connected in parallel, the capacitor 5 releases opposite current to generate opposite magnetic fields in the electromagnet body 6 and opposite to the magnetic field of remanence so as to cancel each other, the current of the capacitor 5 is prevented from flowing back into the relay coil 3 when the unidirectional diode 2 acts, the electric quantity of the capacitor 5 is consumed, the seventh contact 13 and the eighth contact 14 play a role of conducting, in addition, the reverse wire is prevented from being connected, even if the relay body 1 is not damaged by the reverse wire, the relay body 1 does not reduce the attraction force of the electromagnet body 6 while eliminating the remanence, the remanence is eliminated immediately after power is cut off, an additional power supply is not required, only the capacitor is required to be connected to the electromagnet body 6 in parallel, the mode has good remanence eliminating effect, the size of the electromagnet body 6 has a direct relation with the remanence size, the size of the capacitor 5 can be properly replaced, the large electromagnet main body 6 selects a capacitor 5 with large capacity, and the small electromagnet main body 6 selects a capacitor 5 with small capacity.

Referring to fig. 1, 2 and 3, when the electromagnet main body 6 is powered off, the electromagnet remanence eliminator supplies a reverse current to the electromagnet main body 6, and the electromagnet main body 6 generates a reverse magnetic field which counteracts the original remanence magnetic field, so as to eliminate the remanence.

In summary, when the electromagnet remanence eliminator is used, the electromagnet main body 6 is connected to the relay main body 1 in a wire-butt manner, the switch K1 is closed when the electromagnet remanence eliminator is electrified, the relay coil 3 works preferentially, the capacitor 5 charges positively, when the switch K1 is opened, the electromagnet remanence eliminator main body coil is powered off, the capacitor 5 discharges, the contact which is originally connected with the power supply "+" pole is communicated with the pole of the capacitor 5"-" pole, the current direction released by the capacitor 5 is just opposite to the current direction when the electromagnet main body 6 works, because the relay main body 1 and the electromagnet main body 6 are connected in parallel, the capacitor 5 releases opposite current to generate a reverse magnetic field in the electromagnet main body 6, the reverse magnetic field is opposite to the residual magnetic field, so that the residual magnetism is offset each other, the relay main body 1 does not reduce the attraction of the electromagnet main body 6 when the residual magnetism is eliminated, the residual magnetism is eliminated immediately when the power is not needed to be additionally increased, and the capacitor 5 is only required to be connected to the electromagnet main body 6 in parallel, so that the mode of the remanence eliminator is better in the prior art which is not described in detail in the specification.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The utility model provides an electro-magnet remanence eliminator, includes relay main part (1), one-way diode (2), relay coil (3), resistance (4), electric capacity (5) and electro-magnet main part (6), its characterized in that:

the surface of relay main part (1) is connected with one-way diode (2), internally mounted of relay main part (1) has relay coil (3), the surface of relay main part (1) is connected with resistance (4) through the contact pin, the top of relay main part (1) is connected with electric capacity (5) through the contact pin, relay main part (1) is parallelly connected with electro-magnet main part (6) through external circuit.

2. The electromagnet residual magnetism remover according to claim 1, wherein: the relay is characterized in that a first contact (7), a second contact (8), a third contact (9), a fourth contact (10), a fifth contact (11), a sixth contact (12), a seventh contact (13) and an eighth contact (14) are respectively arranged in the relay body (1).

3. The electromagnet residual magnetism remover according to claim 1, wherein: the shape and the size of the electromagnet main body (6) can be switched at will.

4. The electromagnet residual magnetism remover as set forth in claim 3, wherein: the capacity of the capacitor (5) is matched with the magnetic force of the electromagnet main body (6).

5. The electromagnet residual magnetism remover as set forth in claim 3, wherein: the power supply voltage of the relay main body (1) can be selected according to actual conditions.

6. The electromagnet residual magnetism remover according to claim 4, wherein: and a wire is connected between the electromagnet main body (6) and the relay main body (1).

7. The electromagnet residual magnetism remover according to claim 2, wherein: the seventh contact (13) and the eighth contact (14) are connected in parallel to two ends of the relay coil (3).