CN216173188U

CN216173188U - Intelligent electromagnetic iron remover control system

Info

Publication number: CN216173188U
Application number: CN202121694892.1U
Authority: CN
Inventors: 张承臣; 李阳阳; 赵旭伦; 周方俊; 张妍; 王胜尧
Original assignee: Longi Magnet Co Ltd
Current assignee: Longi Magnet Co Ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-04-05
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses an intelligent electromagnetic iron removal control system which comprises a main circuit and a control circuit, wherein the main circuit obtains adjustable voltage within a certain range by respectively passing power supply voltage through breakers QF2, QF3, QF4 and a contactor KM1, KM2 and KM3 and then passing through rectifying circuits VC 1-VC 7, and the adjustable voltage is added to two ends of excitation coils YA1, YA2 and YA3 and is connected with a belt motor through a breaker QF5 and a contactor KM 4; the control circuit receives a metal detector signal through the PLC and controls starting and stopping of the belt motor, the main excitation coil and the two auxiliary excitation coils; the touch screen HMI receives signals from the PLC, coordinates and controls the on-off of the intermediate relays KA1, KA2, KA3 and KA4, and further controls the on-off of the contactors KM1, KM2, KM3 and KM 4.

Description

Intelligent electromagnetic iron remover control system

Technical Field

The utility model relates to the field of electromagnetic appliance manufacturing, in particular to an intelligent electromagnetic iron remover control system.

Background

With the rapid development of national economy, industries such as steel, mines and the like in China are also developed rapidly, more raw materials are needed, higher requirements are provided for the quality of the raw materials, and the task of removing ferromagnetic impurities is more and more difficult. The removal of harmful iron pieces in magnetic materials is a complicated situation, the grades of materials in different sites are different, and the parameters and functions of the control cabinet of the electromagnetic iron remover are influenced due to the interference, vibration and other reasons of the site environment. Most of common iron removal control systems are operated by on-site buttons, so that the system has no effect on higher intelligent requirements of users, and is difficult to realize intelligent control.

Patent publication No. CN202497940U describes, provides an intelligent electromagnetic deironing control system's realization scheme, but in the use, if the electric current is great and start under the frequent condition, the coil in the ac contactor can produce the inductance, causes the impact to PLC, and the time has been long can lead to PLC to damage, and then has reduced the life, reliability and the security of whole equipment. An apparatus with longer service life and higher reliability is urgently needed.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides an intelligent control system of an electromagnetic iron remover, which can prolong the service life of equipment and improve the safety and reliability of the whole equipment on the basis of the existing structure.

According to a first aspect of the utility model, the intelligent electromagnetic iron removal control system is characterized by comprising:

the main circuit comprises a first rectifying circuit, a second rectifying circuit, a third rectifying circuit and a belt motor circuit;

the first rectifying circuit outputs adjustable voltage within a certain range to two ends of the main excitation coil after the power supply voltage passes through the first breaker and the first contactor and the first rectifying module;

the second rectifying circuit outputs adjustable voltage within a certain range to two ends of the first auxiliary excitation coil after the power supply voltage passes through the second circuit breaker and the second contactor and the second rectifying module;

the third rectifying circuit outputs adjustable voltage within a certain range to two ends of the second auxiliary excitation coil after the power supply voltage passes through the third breaker and the third contactor and the third rectifying module;

the belt motor circuit is connected with a belt motor through a fourth breaker and a fifth contactor by power supply voltage division;

a control circuit, comprising:

the programmable logic controller PLC receives the signal of the metal detector and controls the starting and stopping of the belt motor, the main excitation coil and the two auxiliary excitation coils;

and the touch screen receives a signal from the programmable logic controller PLC, coordinates and controls the on-off of the intermediate relay, and further controls the on-off of the contactor.

The intelligent electromagnetic iron removal control system provided by the embodiment of the utility model at least has the following beneficial effects: the intermediate relay is used for indirectly controlling the on-off of the contactor, so that the impact of induced current on the programmable logic controller can be prevented, the programmable logic controller is prevented from being damaged, and the service life and the reliability of the whole equipment are further prolonged.

According to some embodiments of the present invention, the intelligent electromagnetic iron removal control system further includes a temperature and humidity control circuit, and a thermocouple of the temperature and humidity control circuit is inserted into the main excitation coil of the device.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a main circuit of an intelligent electromagnetic iron remover control system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a control circuit in the control system of the intelligent electromagnetic iron remover according to the embodiment of the present invention;

fig. 3 is a schematic diagram of a temperature and humidity control circuit in the control system of the intelligent electromagnetic iron remover according to the embodiment of the present invention.

The three-phase alternating current contactor type three-phase alternating current contactor comprises a main breaker QF1, a first breaker QF2, a second breaker QF3, a third breaker QF4, a first contactor KM1, a second contactor KM2, an alternating current contactor KM3, a first trigger board PCB1, a second trigger board PCB2, a third trigger board PCB3, a main excitation coil YA1, a first auxiliary excitation coil YA2, a second auxiliary excitation coil YA3, a first ammeter PA1, a second ammeter PA2, a third ammeter PA3, a first voltmeter PV1, a second voltmeter PV2 and a third voltmeter PV 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The embodiment of the application provides a control system of an intelligent electromagnetic iron remover.

The system comprises a main circuit and a control circuit.

Referring to fig. 1, the main circuit includes a first rectifying circuit, a second rectifying circuit, a third rectifying circuit, and a belt motor circuit.

380V AC and 50HZ power respectively flows into the first rectifying circuit, the second rectifying circuit, the third rectifying circuit and the belt motor circuit after passing through the main breaker QF 1.

In the first rectifying circuit, current passes through the first breaker QF2 and then reaches the first rectifying modules VC1, VC2 and VC3 through the main contact of the first contactor KM1, the first rectifying modules VC1, VC2 and VC3 are triggered by the first trigger board PCB1 to obtain adjustable direct-current excitation voltage, the voltage is added to the main excitation coil YA1, and the excitation current value and the excitation voltage value can be displayed by the first ammeter PA1 and the first voltmeter PV 1.

In the second rectifying circuit, current passes through the second breaker QF3 and then reaches the second rectifying modules VC4 and VC5 through the main contact of the second contactor KM2, the second rectifying modules VC4 and VC5 are triggered by the second trigger board PCB2 to obtain adjustable direct-current excitation voltage, and the voltage is added to the first auxiliary excitation coil Y A2, and the excitation current value and the excitation voltage value can be displayed by the second ammeter PA2 and the second voltmeter PV 2.

In the third rectifying circuit, current passes through a third breaker QF4 and then passes through a main contact of an alternating current contactor KM3 to reach a third rectifying module VC6-VC7, the rectifying modules VC6 and VC7 are triggered through a third trigger board PCB3 to obtain adjustable direct current excitation voltage, the adjustable direct current excitation voltage is added to a second auxiliary excitation coil YA3, and the excitation current value and the excitation voltage value can be displayed by a third ammeter PA3 and a third voltmeter PV 3.

Referring to fig. 2, the control circuit controls the three-way excitation and the starting and stopping of the belt motor after receiving a signal of the metal detector through the programmable logic controller PLC, the PLC sends the signal into the touch screen HMI, and the touch screen HMI is controlled to coordinate the on and off of the intermediate relays KA1, KA2, KA3 and KA4, so as to control the on and off of the alternating current contactors KM1, KM2, KM3 and KM4, and finally realize the starting and stopping of the three-way excitation and the starting and stopping of the belt motor.

In the use process of the control circuit, under the condition of frequent starting of large current, the coil of the contactor can generate induced current, and the intermediate relay is used for isolating the impact of the induced current on the PLC, so that the service life of equipment can be prolonged, and the safety of the equipment is improved.

Preferably, the touch screen can also realize parameter setting, display overtemperature alarm, fault alarm, over-working alarm and the like, record alarm and fault time and times, accumulate workload and monitor and simulate the working state of a site in real time. Meanwhile, a temperature control circuit is added to improve the reliability of the system.

According to some preferred embodiments of the present application, the intelligent electromagnetic iron removal control system further comprises a temperature and humidity control circuit.

Referring to fig. 3, XMT in the temperature and humidity control circuit can monitor the temperature of a field coil of the main equipment in real time, a thermocouple RV16 is inserted into a main field coil YA1 of the electromagnetic iron removal equipment, when the temperature of the coil is detected to exceed the lower limit value, an intermediate relay KA6 is attracted, and a signal is input into the PLC, the signal is received in the touch screen, an alarm state occurs, and the temperature rise of the coil is prompted, and a corresponding solution should be adopted, when the temperature exceeds the upper limit value, a protection program in the PLC starts to be executed, the equipment stops operating, and the purpose of protecting the equipment is achieved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. An intelligent electromagnetic iron remover control system, comprising:

the first rectifying circuit outputs adjustable voltage within a certain range to two ends of the main excitation coil (YA1) after power supply voltage passes through a first breaker (QF2) and a first contactor (KM1) and then passes through a first rectifying module (VC1, VC2 and VC 3);

the second rectifying circuit outputs adjustable voltage within a certain range to two ends of the first auxiliary excitation coil (YA2) after the power supply voltage passes through the second breaker (QF3) and the second contactor (KM2) and the second rectifying module (VC4, VC 5);

the third rectifying circuit outputs adjustable voltage within a certain range to two ends of the second auxiliary excitation coil (YA3) after the power supply voltage passes through a third breaker (QF4) and a third contactor (KM3) and then passes through a third rectifying module (VC6, VC 7);

the belt motor circuit is connected with a belt motor (M1) through a fourth breaker (QF5) and a fifth contactor (KM4) by power supply voltage division;

a control circuit, comprising:

and the touch screen receives signals from the PLC, coordinates and controls the on-off of the intermediate relays (KA1, KA2, KA3 and KA4) and further controls the on-off of the contactors (KM1, KM2, KM3 and KM 4).

2. The system of claim 1, further comprising: a temperature and humidity control circuit; and a thermocouple (RV16) of the temperature and humidity control circuit is inserted into the equipment main excitation coil (YA 1).