CN216678584U

CN216678584U - Electrical control system of scattering machine

Info

Publication number: CN216678584U
Application number: CN202123355079.4U
Authority: CN
Inventors: 张光辉; 曾双范; 郑松徨; 张光杨
Original assignee: Fujian Huazong Machinery Co ltd
Current assignee: Fujian Huazong Machinery Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-07
Anticipated expiration: 2031-12-29

Abstract

The utility model relates to an electrical control system of a scattering machine, which comprises a three-phase power supply, a secondary power supply, a PLC (programmable logic controller), a current transformer and an intelligent alarm meter, wherein the secondary power supply is connected with the PLC in parallel; one side electric connection of current transformer dials the power connection end of material motor and current transformer's opposite side passes through intelligent alarm table electric connection to PLC controller. According to the utility model, the current transformer is used for monitoring the working current of the feedback material shifting motor in real time, when the working current exceeds a set value, the intelligent alarm meter is triggered to send an alarm and simultaneously feed back to the PLC controller, the PLC controller controls the large-bin motor to rotate reversely, the material shifting motor works until the current is normal, the normal work is recovered, manual intervention is not needed, and the equipment scrapping cost caused by abnormal current can be avoided.

Description

Electrical control system of scattering machine

Technical Field

The utility model belongs to the technical field of scattering equipment, and particularly relates to an electrical control system of a scattering machine.

Background

The plastic product is a product in the petroleum industry chain, and the petroleum also belongs to a resource which is difficult to regenerate, so the plastic product which is saved in recycling is also a reasonable resource utilization mode for the petroleum.

When plastic products are recycled, the plastic products can be compressed and are convenient to transfer, when the plastics are further recycled, the compressed plastic bags need to be scattered and decomposed, and a scattering machine is needed to realize mechanical treatment. The general construction of a breaker is a breaking section comprising a kickoff motor and a breaker roller driven by the kickoff motor, and a large bin belt conveyor for conveying compressed plastic bales to the breaking section. The degree of breaing up the roller can appear in actual work and the compression plastic bag feed volume does not match to lead to the compression plastic bag to influence the normal work of breaing up the roller, the operating current appears too big, has the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the utility model aims to provide an electrical control system of a scattering machine, which can monitor the feedback scattering operation abnormity in real time and automatically control the scattering machine to recover to normal work.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the breaker electrical control system comprises a three-phase power supply, a secondary power supply, a PLC (programmable logic controller), a current transformer and an intelligent alarm meter, wherein the breaker comprises a breaker motor and a large-bin motor, the secondary power supply is connected to the three-phase power supply through an isolation transformer, the secondary power supply is connected with the PLC in parallel, the PLC controls the positive and negative rotation and the starting and stopping of the large-bin motor through a large-bin control loop, and the PLC controls the positive and negative rotation and the starting and stopping of a material stirring motor through a material stirring control loop; one side of the current transformer is electrically connected to a power supply wiring terminal of the material shifting motor, and the other side of the current transformer is electrically connected to the PLC through the intelligent alarm meter.

Preferably, the silo control loop comprises a silo positive relay KA1, a silo reverse relay KA2, a silo positive contactor KM1 and a silo reverse contactor KM2, and a coil of the silo positive relay KA1 and a coil of the silo reverse relay KA2 are respectively and electrically connected to a signal output end of the PLC controller; the normally open contact of the large-bin positive relay KA1, the normally closed contact of the large-bin reverse contactor KM2 and the coil of the large-bin positive contactor KM1 are sequentially connected in series to form a large-bin positive driving circuit, the normally open contact of the large-bin reverse relay KA2, the normally closed contact of the large-bin positive contactor KM1 and the coil of the large-bin reverse contactor KM2 are sequentially connected in series to form a large-bin reverse driving circuit, and the large-bin positive driving circuit and the large-bin reverse driving circuit are interlocked and connected in parallel to a secondary power supply; the large-bin motor is connected with a three-phase power supply through a normally open contact of a large-bin positive contactor KM1 and a normally open contact of a large-bin reverse contactor KM2 which are connected in parallel.

Preferably, the material stirring control loop comprises a material stirring positive relay KA3, a material stirring reverse relay KA4, a material stirring positive contact KM3 and a material stirring reverse contact KM4, wherein a coil of the material stirring positive relay KA3 and a coil of the material stirring reverse relay KA4 are respectively and electrically connected to a signal output end of the PLC controller; the normally open contact of the material shifting positive relay KA3, the normally closed contact of the material shifting back contact KM4 and the coil of the material shifting positive contact KM3 are sequentially connected in series to form a material shifting positive driving circuit, the normally open contact of the material shifting back relay KA4, the normally closed contact of the material shifting positive contact KM3 and the coil of the material shifting back contact KM4 are sequentially connected in series to form a material shifting back driving circuit, and the material shifting positive driving circuit and the material shifting back driving circuit are interlocked and connected in parallel to a secondary power supply; the material stirring motor is connected with a three-phase power supply through a normally open contact of a material stirring positive contact KM3 and a normally open contact of a material stirring reverse contact KM4 which are connected in parallel.

Preferably, the scattering machine further comprises a conveyer belt motor, and the PLC controls the start and stop of the conveyer belt motor through a conveyer belt control loop.

Preferably, the conveyer belt control circuit includes conveyer belt relay KA5 and speed governing converter, the conveyer belt motor passes through the speed governing converter and inserts the three-phase power, has concatenated the normally open contact of conveyer belt relay KA5 between the DCM terminal of speed governing converter and the MI1 terminal, and conveyer belt relay KA 5's coil electric connection is to the signal output part of PLC controller.

Preferably, the signal input end of the PLC controller is also electrically connected with a normally open contact of a working relay KA6, and the working relay KA6 is used for feeding back a working signal of the next process to the PLC controller and stopping the conveyor belt motor when the working relay KA6 loses power.

Preferably, the signal input end of the PLC controller is also electrically connected with a photoelectric switch, and the photoelectric switch is used for feeding back the excess material signal on the conveying belt to the PLC controller.

Compared with the prior art, the utility model has the following beneficial effects:

the electrical control system comprises a PLC controller, a current transformer and an intelligent alarm meter, wherein one side of the current transformer is electrically connected with a material stirring motor, the other side of the current transformer is electrically connected with the PLC controller through the intelligent alarm meter, the current transformer is used for monitoring and feeding back the working current of the material stirring motor in real time, when the working current exceeds a set value, the intelligent alarm meter is triggered to send an alarm and simultaneously feed back to the PLC controller, the PLC controller receives signals, analyzes and processes the signals to control the large-cabin motor to rotate reversely for a certain distance and then stop, or the PLC controller controls the large-bin motor to rotate reversely for a certain distance and then stops and controls the material shifting motor to rotate reversely, or the PLC controls the large-bin motor to rotate reversely for a certain distance and then stop and controls the material shifting motor to stop until the working current of the material shifting motor is normal, so that the normal work is recovered under automatic control, manual intervention is not needed, and the equipment scrapping cost caused by abnormal current can be avoided.

Drawings

Fig. 1 is a circuit diagram of a three-phase power supply connected to a large-bin motor, a material shifting motor and a conveyer belt motor.

Fig. 2 is a wiring diagram of the PLC controller of the present invention.

FIG. 3 is a circuit diagram of a large bin positive and negative driving circuit and a material-dialing positive and negative driving circuit of the present invention.

Fig. 4 is a wiring diagram of the intelligent alarm meter of the present invention.

Detailed Description

In order to make the aforementioned and other features and advantages of the utility model more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 to 4, the present embodiment provides an electrical control system for a breaker, which is used to control the forward and reverse rotation and start and stop of a material stirring motor, the forward and reverse rotation and start and stop of a large bin motor, and the start and stop of a conveyor belt motor. The large-bin motor is used for ordering the belt conveyor on the feeding side of the material stirring station to operate, the conveyer belt motor is used for ordering the conveyer belt on the discharging side of the material stirring station to operate, the belt conveyor is used for conveying compressed materials in the large bin to the material stirring station, the conveyer belt is used for conveying scattered materials to the processing host, and the input end of the conveyer belt is provided with a conveyer belt bin which is connected with the discharging port of the material stirring station.

The electric control system of the embodiment comprises a three-phase power supply, a secondary power supply, a PLC (programmable logic controller), a current transformer, a photoelectric switch and an intelligent alarm meter, wherein the PLC adopts a DVP32EC3 programmable program controller, and the photoelectric switch adopts BEN 500; the intelligent alarm meter adopts AI500F17L1, and comprises a digital current meter and an alarm module.

The secondary power supply is connected to a three-phase power supply through an isolation transformer, the power end of the PLC is connected to the secondary power supply, the PLC controls the positive and negative rotation and the starting and stopping of the large-bin motor through the large-bin control loop, the PLC controls the positive and negative rotation and the starting and stopping of the material stirring motor through the material stirring control loop, and the PLC controls the starting and stopping of the conveyer belt motor through the conveyer belt control loop.

In this embodiment, big storehouse control circuit includes big storehouse positive relay KA1, big storehouse anti-relay KA2, big storehouse positive contactor KM1 and big storehouse anti-contactor KM2, big storehouse positive relay KA 1's coil and big storehouse anti-relay KA 2's coil electric connection respectively is at the signal output part of PLC controller, and the other end of big storehouse positive relay KA 1's coil and big storehouse anti-relay KA 2's coil is connected to 24V power respectively. The large-bin positive relay KA1 is characterized in that a normally open contact, a normally closed contact of a large-bin reverse contactor KM2 and a coil of a large-bin positive contactor KM1 are sequentially connected in series to form a large-bin positive driving circuit, a normally open contact of a large-bin reverse relay KA2, a normally closed contact of a large-bin positive contactor KM1 and a coil of a large-bin reverse contactor KM2 are sequentially connected in series to form a large-bin reverse driving circuit, and the large-bin positive driving circuit and the large-bin reverse driving circuit are interlocked and connected in parallel to a secondary power supply. The large-bin motor is connected with a three-phase power supply through a normally open contact of a large-bin positive contactor KM1 and a normally open contact of a large-bin reverse contactor KM2 which are connected in parallel. When big positive relay KA1 of storehouse is got electric, big positive relay KA 1's normally open contact closure switches on big positive drive circuit of storehouse for big positive contactor KM 1's coil gets electric, thereby makes big positive contactor KM 1's normally open contact closure of storehouse, realizes the corotation of big storehouse motor, and big positive contactor KM 1's normally closed contact disconnection avoids big storehouse motor reversal simultaneously. In the same way, when the large-cabin reverse relay KA2 is electrified, the large-cabin motor is reversely rotated and is prevented from rotating forwards.

In this embodiment, dial material control circuit includes dial material positive relay KA3, dial material anti-relay KA4, dials material positive contactor KM3 and dials material anti-contactor KM4, dial material positive relay KA 3's coil and dial material anti-relay KA 4's coil electric connection respectively at the signal output part of PLC controller, dial material positive relay KA 3's coil and dial material anti-relay KA 4's coil other end and be connected to 24V power respectively. The normally open contact of the material stirring positive relay KA3, the normally closed contact of the material stirring reverse contact KM4 and the coil of the material stirring positive contact KM3 are sequentially connected in series to form a material stirring positive driving circuit, the normally open contact of the material stirring reverse relay KA4, the normally closed contact of the material stirring positive contact KM3 and the coil of the material stirring reverse contact KM4 are sequentially connected in series to form a material stirring reverse driving circuit, and the material stirring positive driving circuit and the material stirring reverse driving circuit are interlocked and connected in parallel to a secondary power supply. The material stirring motor is connected with a three-phase power supply through a normally open contact of a material stirring positive contact KM3 and a normally open contact of a material stirring reverse contact KM4 which are connected in parallel. When dialling material positive relay KA3 and getting electric, the normal open contact closure of dialling material positive relay KA3 switches on the positive drive circuit of dialling the material for the coil of dialling the positive contactor KM3 gets electric, thereby makes the normal open contact closure of dialling the material positive contactor KM3, realizes dialling the corotation of material motor, dials the normally closed contact disconnection of the positive contactor KM3 of material simultaneously, avoids dialling the material motor reversal. In the same way, when the material stirring reverse relay KA4 is electrified, the reverse rotation of the material stirring motor is realized, and the forward rotation of the material stirring motor is avoided.

In this embodiment, conveyer belt control circuit includes conveyer belt relay KA5 and speed governing converter, the conveyer belt motor passes through the speed governing converter and inserts three phase current, has concatenated conveyer belt relay KA 5's normally open contact between the DCM terminal of speed governing converter and MI1 terminal, and conveyer belt relay KA 5's coil electric connection is to the signal output part of PLC controller, and it is electrified when conveyer belt relay KA5 coil, and conveyer belt relay KA 5's normally open contact is closed, controls the conveyer belt motor then and stops. In addition, a communication interface of the speed-regulating frequency converter and a communication interface of the PLC controller are respectively connected to a CMO communication port of the touch screen, and the touch screen adopts DOP-107 BV.

In this embodiment, the signal input end of the PLC controller is electrically connected with a button switch SB4 for controlling the forward rotation of the large-bin motor, a button switch SB5 for controlling the reverse rotation of the large-bin motor, a button switch SB6 for controlling the forward rotation of the material stirring motor, a button switch SB7 for controlling the reverse rotation of the material stirring motor, and a button switch SB8 for controlling the operation of the conveyor belt motor. The other ends of the push-button switches SB4, SB5, SB6, SB7, SB8 are connected to a 24V power supply, respectively.

In addition, the signal input part of PLC controller still electric connection have photoelectric switch and the normally open contact of work relay KA6 on the processing host computer, photoelectric switch and work relay KA 6's the other end of normally open contact is connected to the 24V power respectively. The photoelectric switch is arranged in the conveying belt bin to detect the material amount in the conveying belt bin, when the material in the conveying belt bin reaches a threshold value, the photoelectric switch is switched on and sends a signal to the PLC, the PLC controls the large bin positive relay KA1, the large bin reverse relay KA2, the material shifting positive relay KA3 and the material shifting reverse relay KA4 to be not powered, and the large bin motor and the material shifting motor do not work; or the PLC controller controls the large-bin motor to rotate reversely for a certain distance and then stop and the material stirring motor to stop. The coil of work relay KA6 is connected and is used for feeding back processing host computer working signal for the PLC controller in the control circuit of processing host computer, and work relay KA6 gets electric then the conveyer belt motor work in order to send into the processing host computer with the material after breaing up, and lose electric then the conveyer belt motor does not work when work relay KA 6.

In this embodiment, one side electric connection of current transformer is to dialling the power connection end of material motor and current transformer's opposite side passes through intelligent warning table electric connection to PLC controller, and work current when dialling the material motor exceeds the work of settlement electric current then intelligent warning table starts the warning and feeds back to the PLC controller, and the PLC controller analysis is and is sent relevant control command: the large-bin reverse relay KA2 is powered to enable the large-bin motor to rotate reversely for a certain distance and then stop to enable the compressed materials and the scattered parts to be separated, or the material poking reverse relay KA4 is powered to enable the material poking motor to rotate reversely or the material poking positive relay KA3 is powered off to enable the material poking motor to stop; after the working current of the material shifting motor is normal, the PLC controls the large-bin motor and the material shifting motor to recover normal work, namely the large-bin motor rotates forwards, and the material shifting motor rotates forwards.

In a normal working state of the scattering machine, the PLC controls the large-bin motor to rotate forward to convey the compressed materials to the material stirring position, the PLC controls the material stirring motor to rotate forward to stir the compressed materials, and the PLC controls the conveyer belt motor to work to convey the scattered materials to the processing host; when the materials on the conveyer belt are excessively accumulated, the PLC controller responds to a signal of the photoelectric switch to control the big-cabin motor and the material-shifting motor not to work, or the PLC controller controls the big-cabin motor to rotate reversely for a certain distance and then stops and the material-shifting motor stops; when the working current of the material shifting motor exceeds a set value, the PLC responds to a signal of the intelligent alarm meter to control the large-bin motor to rotate reversely for a certain distance and then stop, or the large-bin motor rotates reversely to shift the material motor and stop, and meanwhile, the intelligent alarm meter gives an alarm, and when the working current of the material shifting motor is normal, the large-bin motor and the material shifting motor are recovered to rotate forwardly.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The electric control system of the scattering machine comprises a scattering motor and a large-bin motor, and is characterized in that: the electric control system of the scattering machine comprises a three-phase power supply, a secondary power supply, a PLC (programmable logic controller), a current transformer and an intelligent alarm meter, wherein the secondary power supply is connected to the three-phase power supply through an isolation transformer, the secondary power supply is connected with the PLC in parallel, the PLC controls the positive and negative rotation and the starting and stopping of a large-bin motor through a large-bin control loop, and the PLC controls the positive and negative rotation and the starting and stopping of a material stirring motor through a material stirring control loop; one side of the current transformer is electrically connected to a power supply wiring terminal of the material shifting motor, and the other side of the current transformer is electrically connected to the PLC through the intelligent alarm meter.

2. The electrical control system of a breaker according to claim 1 wherein: the large-bin control loop comprises a large-bin positive relay KA1, a large-bin reverse relay KA2, a large-bin positive contactor KM1 and a large-bin reverse contactor KM2, wherein a coil of the large-bin positive relay KA1 and a coil of the large-bin reverse relay KA2 are electrically connected to a signal output end of the PLC respectively;

the normally open contact of the large-bin positive relay KA1, the normally closed contact of the large-bin positive contactor KM2 and the coil of the large-bin positive contactor KM1 are sequentially connected in series to form a large-bin positive driving circuit, the normally open contact of the large-bin negative relay KA2, the normally closed contact of the large-bin positive contactor KM1 and the coil of the large-bin negative contactor KM2 are sequentially connected in series to form a large-bin negative driving circuit, and the large-bin positive driving circuit and the large-bin negative driving circuit are interlocked and connected in parallel to a secondary power supply;

the large-bin motor is connected with a three-phase power supply through a normally open contact of a large-bin positive contactor KM1 and a normally open contact of a large-bin reverse contactor KM2 which are connected in parallel.

3. The electrical control system of a breaker according to claim 1, wherein: the material stirring control loop comprises a material stirring positive relay KA3, a material stirring reverse relay KA4, a material stirring positive contactor KM3 and a material stirring reverse contactor KM4, wherein a coil of the material stirring positive relay KA3 and a coil of the material stirring reverse relay KA4 are respectively and electrically connected to a signal output end of the PLC;

the normally open contact of the material shifting positive relay KA3, the normally closed contact of the material shifting back contact KM4 and the coil of the material shifting positive contact KM3 are sequentially connected in series to form a material shifting positive driving circuit, the normally open contact of the material shifting back relay KA4, the normally closed contact of the material shifting positive contact KM3 and the coil of the material shifting back contact KM4 are sequentially connected in series to form a material shifting back driving circuit, and the material shifting positive driving circuit and the material shifting back driving circuit are interlocked and connected in parallel to a secondary power supply;

the material stirring motor is connected with a three-phase power supply through a normally open contact of a material stirring positive contact device KM3 and a normally open contact of a material stirring reverse contact device KM4 which are connected in parallel.

4. The electrical control system of a breaker according to claim 1, wherein: the scattering machine also comprises a conveyer belt motor, and the PLC controls the start and stop of the conveyer belt motor through a conveyer belt control loop.

5. The electrical control system of a breaker according to claim 4 wherein: conveyer belt control circuit includes conveyer belt relay KA5 and speed governing converter, the conveyer belt motor passes through the speed governing converter and inserts three phase current, has concatenated the normally open contact of conveyer belt relay KA5 between the DCM terminal of speed governing converter and MI1 terminal, and conveyer belt relay KA 5's coil electric connection is to the signal output part of PLC controller.

6. The electrical control system of a breaker according to claim 5, wherein: the signal input part of PLC controller still electric connection has work relay KA 6's normally open contact, work relay KA6 is used for feeding back next process operating signal and gives the PLC controller and loses the electricity then stop the conveyer belt motor at work relay KA 6.

7. The electrical control system of a breaker according to claim 4, wherein: the signal input end of the PLC is also electrically connected with a photoelectric switch, and the photoelectric switch is used for feeding back the material excess signal on the conveying belt to the PLC.