Belt conveying control system and belt conveyor system

Abstract

According to the belt conveying control system and the belt conveyor system provided by the utility model, control cabinets of all devices in the belt conveying system are integrated into the belt conveying control system, so that the control flow is optimized; on the basis of a programmable controller, a frequency converter, an analog quantity input module and an analog quantity output module, a permanent magnet synchronous motor, a cooling water pump motor and a brake oil pump motor in the belt conveying system are started, stopped and controlled, and cooperative operation of all devices in the belt conveying system is facilitated. The operation stability, safety and conveying efficiency of the belt conveying system are improved, the operation and maintenance cost is reduced, and meanwhile the occupied area is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of belt conveying, especially relates to a belt conveying control system and a belt conveyor system. BACKGROUND

[0002] The existing belt conveying system is composed of a belt comprehensive protection device, a transmission device, a cooling device and a brake device, and each device has a separate control cabinet.

[0003] In actual application, each control cabinet is independently arranged, occupies a large area, and independent control of each device results in poor coordination between devices, which cannot realize efficient cooperative operation and easily causes fault error, so that the conveying efficiency of the belt conveying system is low and the operation and maintenance cost is high. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a belt conveying control system and a belt conveyor system to solve the problems of large area of control cabinet of the prior art belt conveying system, inconvenient cooperative control, low conveying efficiency of the belt conveying system and high operation and maintenance cost.

[0005] The utility model embodiment provides a belt conveying control system and a belt conveyor system to solve the problems of large area of control cabinet of the prior art belt conveying system, inconvenient cooperative control, low conveying efficiency of the belt conveying system and high operation and maintenance cost.

[0006] The communication port of the programmable controller is connected with the communication port of the frequency converter, the extension end of the programmable controller is connected with the analog input module and the analog output module respectively, the output end of the programmable controller is connected with the first input end of the frequency converter, the input end of the cooling water pump motor and the brake oil pump motor in the belt conveying system respectively, the analog output module is connected with the second input end of the frequency converter, and the output end of the frequency converter is connected with the input end of the permanent magnet synchronous motor in the belt conveying system.

[0007] In some possible implementation manners, the programmable controller comprises a digital input module and a digital output module, and the output end of the programmable controller is the digital output module; the belt conveying control system further comprises a first relay module and a first isolation transmitter.

[0008] The digital output module is connected with the input end of the cooling water pump motor, the input end of the brake oil pump motor and the first input end of the frequency converter through the first relay module respectively;

[0009] The analog output module is connected with the second input end of the frequency converter through the first isolation transmitter.

[0010] In some possible implementation manners, the belt conveying control system further comprises a second relay module and a second isolated transmitter;

[0011] The digital quantity input module is connected to an output end of the second relay module, and an input end of the second relay module is connected to a switch button in the belt conveying system.

[0012] The analog quantity input module is connected to an output end of the second isolated transmitter, and an input end of the second isolated transmitter is connected to a sensor in the belt conveying system, wherein the sensor comprises a pressure sensor and a temperature sensor.

[0013] In some possible implementation manners, the belt conveying control system further comprises a circuit breaker electric operating mechanism, a first output contactor, a second output contactor, a circuit breaker, a first motor circuit breaker and a second motor circuit breaker;

[0014] The digital quantity output module is connected to a solenoid valve in the belt conveying system through the first relay module;

[0015] The digital quantity output module is connected to a third input end of the frequency converter through the first relay module, the circuit breaker electric operating mechanism and the circuit breaker in sequence;

[0016] The digital quantity output module is connected to an input end of the cooling water pump motor through the first relay module and the first output contactor in sequence, and an output end of the first motor circuit breaker is connected to the first output contactor;

[0017] The digital quantity output module is connected to an input end of the brake oil pump motor through the first relay module and the second output contactor in sequence, and an output end of the second motor circuit breaker is connected to the second output contactor.

[0018] In some possible implementation manners, the belt conveying control system further comprises a first small circuit breaker and a step-down transformer;

[0019] The first small circuit breaker is connected to an input end of the step-down transformer, and output ends of the step-down transformer are respectively connected to an input end of the first motor circuit breaker and an input end of the second motor circuit breaker.

[0020] In some possible implementation manners, the number of the first output contactor, the first motor circuit breaker and the cooling water pump motor is the same, and the number can be one or more; the number of the second output contactor, the second motor circuit breaker and the brake oil pump motor is the same, and the number can be one or more.

[0021] In some possible implementation manners, the belt conveying control system further comprises an input reactor and an output filter.

[0022] The digital output module is connected with the third input end of the frequency converter through the first relay module, the circuit breaker electric operating mechanism, the circuit breaker and the input reactor in sequence.

[0023] The output end of the frequency converter is connected with the input end of the permanent magnet synchronous motor through the output filter.

[0024] In some possible implementation manners, the belt conveying control system further comprises a second miniature circuit breaker, a third miniature circuit breaker, a 24-volt switching power supply, a cooling fan, a lighting lamp, a five-hole socket, a multifunctional power meter and a current transformer.

[0025] The input end of the second miniature circuit breaker is connected with the output end of the step-down transformer, and the output end of the second miniature circuit breaker is connected with the 24-volt switching power supply.

[0026] The input end of the third miniature circuit breaker is connected with the output end of the step-down transformer, the output end of the third miniature circuit breaker is connected with the input end of the cooling fan, the lighting lamp, the five-hole socket and the multifunctional power meter, and the output end of the multifunctional power meter is connected with the current transformer.

[0027] In some possible implementation manners, the belt conveying control system further comprises an industrial control screen and a network switch.

[0028] The industrial control screen is connected with the network switch, and the input end of the programmable controller is connected with the network switch.

[0029] The second aspect of the embodiment of the utility model provides a belt conveyor system, the belt conveyor system includes belt conveying system and any one kind of belt conveying control system provided by the first aspect of the utility model embodiment.

[0030] The control cabinet of each device in the belt conveying system is integrated into the belt conveying control system in the embodiment, the control process is optimized, the programmable controller, the frequency converter, the analog input module and the analog output module are used to start and control the permanent magnet synchronous motor, the cooling water pump motor and the brake oil pump motor in the belt conveying system, the cooperation of each device in the belt conveying system is facilitated, the operation stability, the safety and the conveying efficiency of the belt conveying system are improved, the operation and maintenance cost is reduced, and the occupied area is saved. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is a structural schematic diagram of a belt conveying control system provided by an embodiment of the present application;

[0033] Figure 2 is a structural schematic diagram of another belt conveying control system provided by an embodiment of the present application;

[0034] Figure 3 is a structural schematic diagram of still another belt conveying control system provided by an embodiment of the present application;

[0035] Figure 4 is a structural schematic diagram of yet another belt conveying control system provided by an embodiment of the present application. DETAILED DESCRIPTION

[0036] In the following description, specific details are set forth in order to provide a thorough understanding of the embodiments of the present application, but the present application can be practiced without these specific details. In other instances, well-known systems, circuits, and methods have not been described in detail so as not to unnecessarily obscure the present application.

[0037] In order to illustrate the technical scheme of the present application, the following will be described through specific embodiments.

[0038] Referring to Figure 1 The present application provides a structural schematic diagram of a belt conveying control system, which comprises a programmable controller 11, a frequency converter 12, an analog input module 13 and an analog output module 14.

[0039] The communication port of the programmable controller 11 is connected to the communication port of the frequency converter 12.

[0040] The extension end of the programmable controller 11 is connected to the analog input module 13 and the analog output module 14 respectively.

[0041] The output end of the programmable controller 11 is connected to the first input end of the frequency converter 12, and the input end of the cooling water pump motor and the brake oil pump motor in the belt conveying system.

[0042] The analog output module 14 is connected to the second input end of the frequency converter 12, and the output end of the frequency converter 12 is connected to the input end of the permanent magnet synchronous motor in the belt conveying system.

[0043] The programmable controller 11 includes a central processing unit, an input and output module, a power module, a memory and the like.

[0044] The programmable controller 11 reads the running data of the frequency converter 12 through a communication port.

[0045] In an available embodiment, the programmable controller 11 controls the start and stop of the frequency converter 12 through an output end, the analog output module 14 controls the output frequency of the frequency converter 12, and the frequency converter 12 controls the start and stop and the rotating speed of the permanent magnet synchronous motor.

[0046] The programmable controller 11 controls the start and stop and the rotating speed of the cooling water pump motor and the brake oil pump motor through an output end.

[0047] The analog input module 13 is used for collecting the state of a field sensor.

[0048] The permanent magnet synchronous motor in the belt conveying system is a driving device of the belt conveyor, which drives the belt to run; the cooling water pump motor in the belt conveying system is used for sending water in a cooling device to the cooling water channel of the permanent magnet synchronous motor to reduce the temperature of the permanent magnet synchronous motor; and the brake oil pump motor in the belt conveying system is used for sending brake oil in a brake device to a brake head.

[0049] In the embodiment, the control cabinets of various devices in the belt conveying system are integrated into the belt conveying control system, the control process is optimized, the start and stop of the permanent magnet synchronous motor, the cooling water pump motor and the brake oil pump motor in the belt conveying system are controlled based on the programmable controller, the frequency converter, the analog input module and the analog output module, the cooperative operation of various devices in the belt conveying system is facilitated, the running stability, the safety and the conveying efficiency of the belt conveying system are improved, the operation and maintenance cost is reduced, and the occupied area is saved.

[0050] Referring to Figure 2 The programmable controller 11 includes a digital input module 111 and a digital output module 112, and the output end of the programmable controller 11 is the digital output module 112; the belt conveying control system further includes a first relay module 15 and a first isolation transmitter 16.

[0051] The digital output module 112 is connected to the input end of the cooling water pump motor, the input end of the brake oil pump motor and the first input end of the frequency converter 12 through the first relay module 15.

[0052] The signal voltage and current output by the digital output module 112 are relatively low, while the working voltage and current of the cooling water pump motor, the brake oil pump motor and the frequency converter 12 are usually high. The first relay module 15 can form electrical isolation between the digital output module 112 and these devices, prevent high voltage and large current from flowing back into the digital output module 112, avoid damage to the digital output module due to overvoltage and overcurrent, prolong the service life of the digital output module, and improve the stability and reliability of the entire system.

[0053] Meanwhile, by using the first relay module 15, one output port of the digital output module 112 can be used to connect the cooling water pump motor, the brake oil pump motor and the first input end of the frequency converter 12 through different contacts of the relay, thereby achieving control over multiple devices. In this way, the control requirements for multiple different devices can be met without increasing the number of output ports of the digital output module, thereby improving the control flexibility of the system and the integration of the devices.

[0054] When a fault occurs in a device in the system, since the first relay module 15 relatively independently isolates the control circuits of the devices, the working state of the relay (such as whether the contact is attracted or the coil is energized) can be checked to quickly determine whether the fault is in the digital output module 112, the first relay module 15 or the specific controlled device, thereby facilitating maintenance personnel to quickly locate the fault point, shorten the maintenance time and reduce the downtime of the device.

[0055] The analog output module 14 is connected to the second input end of the frequency converter 12 through the first isolation transmitter 16.

[0056] In one example, the first isolation transmitter 16 not only functions as a signal converter, but also electrically isolates the analog output module 14 from the second input end of the frequency converter 12. In this way, high voltage and large current generated during the operation of the frequency converter 12 and various electromagnetic interferences can be prevented from being transmitted back to the analog output module 14, thereby protecting the analog output module 14 from damage and avoiding the influence of the failure of the analog output module 14 on the normal operation of the frequency converter 12, thereby improving the stability and reliability of the entire system.

[0057] In some embodiments, the belt conveying control system further comprises a second relay module 17 and a second isolation transmitter 18.

[0058] The digital input module 111 is connected to the output end of the second relay module 17, and the input end of the second relay module 17 is connected to the switch button in the belt conveying system.

[0059] The second relay module 17 can realize protection of the digital quantity input module 111. When the device connected to the rear of the digital quantity input module 111, such as a switch button, has a fault, such as a short circuit fault, the normal work of the digital quantity input module is not affected.

[0060] The switch button is used to control the start and stop of the device.

[0061] The analog quantity input module 13 is connected to the output end of the second isolation transmitter 18, and the input end of the second isolation transmitter 18 is connected to a sensor in the belt conveying system, wherein the sensor includes a pressure sensor and a temperature sensor.

[0062] The second isolation transmitter 18 converts the output signals of the temperature sensor, such as a PT100 sensor of a permanent magnet synchronous motor, and the pressure sensor into current signals, for the analog quantity input module 13 to collect the current signals.

[0063] The pressure sensor is used to detect the oil pressure of a brake device in the belt conveying system, and the PT100 sensor is used to detect the temperature of the permanent magnet synchronous motor.

[0064] Referring to Figure 3 , the belt conveying control system further includes a circuit breaker electric operating mechanism 19, a first output contactor 20, a second output contactor 21, a circuit breaker 22, a first motor circuit breaker 23, and a second motor circuit breaker 24.

[0065] The digital quantity output module 112 is connected to a solenoid valve in the belt conveying system through the first relay module 15.

[0066] The solenoid valve is a solenoid valve of a brake device in the belt conveying system, and is used to control the pressure maintaining or backflow of an oil circuit of the brake device.

[0067] The first relay module 15 converts and amplifies the low-voltage and small-current signal output by the digital quantity output module 112 into a signal suitable for the work of the solenoid valve, realizes electrical isolation between the two, and can improve the stability and flexibility of the system.

[0068] In a feasible implementation manner, the digital quantity output module 112 can also be connected to an indicator lamp through the first relay module 15 to control the field indication and indicate the running state of each device.

[0069] The digital quantity output module 112 is connected to the third input end of the frequency converter in sequence through the first relay module 15, the circuit breaker electric operating mechanism 19, and the circuit breaker 22.

[0070] In an example, according to the signal of the digital quantity output module 112, the closing and opening of the circuit breaker are controlled through the circuit breaker electric operating mechanism 19, so as to realize the on-off control of the power supply of the third input end of the frequency converter 12.

[0071] The digital output module 112 connects the input end of the cooling water pump motor through the first relay module 15 and the first output contactor 20 in sequence, and the output end of the first motor circuit breaker 23 is connected to the first output contactor 20.

[0072] The digital output module 112 connects the input end of the brake oil pump motor through the first relay module 15 and the second output contactor 21 in sequence, and the output end of the second motor circuit breaker 24 is connected to the second output contactor 21.

[0073] The digital output module 112 can accurately control the on-off of the first output contactor 20 and the second output contactor 21 through the first relay module 15, thereby accurately controlling the start, stop and running state of the cooling water pump motor and the brake oil pump motor, and meeting the control requirements of the cooling water pump motor and the brake oil pump motor under different working conditions.

[0074] When an overload or short circuit fault occurs in the circuit, the circuit breaker can automatically detect and cut off the circuit to protect the frequency converter and the cooling water pump motor, the brake oil pump motor and other equipment from damage caused by overload and short circuit current. Moreover, when the power supply voltage is lower than a certain value, the circuit breaker can automatically trip to prevent the equipment from running in an under-voltage state and avoid damaging the equipment.

[0075] In some embodiments, the belt conveying control system further comprises a first miniature circuit breaker 25 and a step-down transformer 26; the first miniature circuit breaker 25 is connected to the input end of the step-down transformer 26, and the output end of the step-down transformer 26 is respectively connected to the input end of the first motor circuit breaker 23 and the input end of the second motor circuit breaker 24.

[0076] The first miniature circuit breaker 25 can quickly cut off the circuit when a short circuit or overload occurs in the circuit, thereby protecting the step-down transformer 26 and subsequent equipment from damage caused by excessive current.

[0077] The step-down transformer 26 converts the input voltage into a voltage suitable for the operation of the cooling water pump motor, the brake oil pump motor and other equipment, ensuring that the equipment operates under stable voltage and avoiding damage to the equipment caused by excessively high or low voltage, thereby prolonging the service life of the equipment.

[0078] In some embodiments, the number of first output contactors, first motor circuit breakers and cooling water pump motors is the same, and the number can be one or more; the number of second output contactors, second motor circuit breakers and brake oil pump motors is the same, and the number can be one or more.

[0079] The embodiment sets a redundant circuit, when a motor fails, the output contactor, motor circuit breaker and motor set according to the redundancy can ensure the normal operation of the belt conveying system. The operation of multiple motors can be flexibly controlled according to actual needs to meet different working scenes and load requirements.

[0080] Referring to Figure 4 , the belt conveying control system further comprises an input reactor 27 and an output filter 28.

[0081] The digital output module 112 is connected to the third input end of the frequency converter 12 through the first relay module 15, the circuit breaker electric operating mechanism 19, the circuit breaker 22 and the input reactor 27 in sequence.

[0082] The output end of the frequency converter 12 is connected to the input end of the permanent magnet synchronous motor through the output filter 28.

[0083] When the frequency converter 12 starts, the input reactor 27 can limit the inrush current generated at the moment of closing, protect the frequency converter 12 from the impact of overcurrent, and prolong the service life of the equipment. Moreover, the frequency converter 12 will generate harmonic current during operation, and the input reactor 27 can effectively suppress the harmonic current from entering the system, reducing the interference of harmonics on other devices in the system.

[0084] The output filter 28 suppresses the electromagnetic interference of the frequency converter 12 on the permanent magnet synchronous motor.

[0085] In some embodiments, the belt conveying control system further comprises a second miniature circuit breaker 29, a third miniature circuit breaker 30, a 24-volt switching power supply 31, a cooling fan 32, a lighting lamp 33, a five-hole socket 34, a multifunctional power meter 35 and a current transformer 36.

[0086] The input end of the second miniature circuit breaker 29 is connected to the output end of the step-down transformer 26, and the output end of the second miniature circuit breaker 29 is connected to the 24-volt switching power supply 31.

[0087] The input end of the third miniature circuit breaker 30 is connected to the output end of the step-down transformer 26, and the output end of the third miniature circuit breaker 30 is connected to the input end of the cooling fan 32, the lighting lamp 33, the five-hole socket 34 and the multifunctional power meter 35. The output end of the multifunctional power meter is connected to the current transformer 36.

[0088] The second miniature circuit breaker 29 is used for protecting the 24-volt (V) switching power supply 31, the 24V switching power supply can reduce the input voltage to supply power to the subsequent device; the current transformer 36 is used for detecting the line current; the heat dissipation fan 32 reduces the temperature in the control system cabinet; the illuminating lamp 33 provides illumination in the control system cabinet; the five-hole socket 34 can supply power to other devices during maintenance; the multifunctional electric power instrument 35 is used for detecting and displaying the line voltage, current related data; and the current transformer is used for detecting the line current.

[0089] In an available implementation, the belt conveying control system further comprises an industrial control screen 37 and a network switch 38; the industrial control screen 37 is connected to the network switch 38, and the network switch 38 is connected to the input end of the programmable controller 11.

[0090] In the embodiment, the industrial control screen 37 provides a man-machine interactive platform to display the data in the programmable controller, and the related parameters can be set by using the industrial control screen 37.

[0091] The network switch 38 serves as an intermediate medium for the interaction between the industrial control screen 37 and the programmable controller 11, the industrial control screen 37 is connected to the network switch 38; the network switch 38 is connected to the programmable controller 11, and the programmable controller 11 is connected to the communication port of the frequency converter 12 to form a local area network.

[0092] The embodiment of the utility model further provides a belt conveyor system, including belt conveying system and like any one kind of belt conveying control system above, and has the beneficial effect of like any one kind of belt conveying control system above.

[0093] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than limit them; although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and range of the technical solutions of the embodiments of the utility model, and all should be included in the protection scope of the utility model.

Claims

1. A belt conveyance control system characterized by, The belt conveying control system comprises a programmable controller, a frequency converter, an analog input module and an analog output module; The communication port of the programmable controller is connected with the communication port of the frequency converter, the extension end of the programmable controller is connected with the analog input module and the analog output module respectively, the output end of the programmable controller is connected with the first input end of the frequency converter, the input end of the cooling water pump motor and the brake oil pump motor in the belt conveying system respectively, the analog output module is connected with the second input end of the frequency converter, and the output end of the frequency converter is connected with the input end of the permanent magnet synchronous motor in the belt conveying system.

2. The belt conveyance control system according to claim 1, characterized by, The programmable controller comprises a digital input module and a digital output module, and the output end of the programmable controller is the digital output module; the belt conveying control system further comprises a first relay module and a first isolation transmitter; The digital output module is connected with the input end of the cooling water pump motor, the input end of the brake oil pump motor and the first input end of the frequency converter through the first relay module respectively; The analog output module is connected with the second input end of the frequency converter through the first isolation transmitter.

3. The belt conveyor control system of claim 2, wherein, The belt conveying control system further comprises a second relay module and a second isolation transmitter; The digital input module is connected with the output end of the second relay module, and the input end of the second relay module is connected with the switch button in the belt conveying system; The analog input module is connected with the output end of the second isolation transmitter, and the input end of the second isolation transmitter is connected with the sensor in the belt conveying system, wherein the sensor comprises a pressure sensor and a temperature sensor.

4. The belt conveyor control system of claim 2, wherein, The belt conveying control system further comprises a circuit breaker electric operating mechanism, a first output contactor, a second output contactor, a circuit breaker, a first motor circuit breaker and a second motor circuit breaker; The digital output module is connected with the electromagnetic valve in the belt conveying system through the first relay module; The digital output module is connected with the third input end of the frequency converter through the first relay module, the circuit breaker electric operating mechanism and the circuit breaker in sequence; The digital output module is connected with the input end of the cooling water pump motor through the first relay module and the first output contactor in sequence, and the output end of the first motor circuit breaker is connected with the first output contactor; The digital output module is connected with the input end of the brake oil pump motor through the first relay module and the second output contactor in sequence, and the output end of the second motor circuit breaker is connected with the second output contactor.

5. The belt conveyor control system of claim 4, wherein, The belt conveying control system further comprises a first small circuit breaker and a step-down transformer; The first small circuit breaker is connected with the input end of the step-down transformer, and the output end of the step-down transformer is connected with the input end of the first motor circuit breaker and the input end of the second motor circuit breaker respectively.

6. The belt conveyor control system of claim 4, wherein, The first output contactor, the first motor circuit breaker and the cooling water pump motor are equal in number; the second output contactor, the second motor circuit breaker and the brake oil pump motor are equal in number.

7. The belt conveyor control system of claim 4, wherein, The belt conveying control system further comprises an input reactor and an output filter; The digital output module is connected to the third input end of the frequency converter through the first relay module, the circuit breaker electric operating mechanism, the circuit breaker and the input reactor in sequence; The output end of the frequency converter is connected to the input end of the permanent magnet synchronous motor through the output filter.

8. The belt conveyor control system of claim 5, wherein, The belt conveying control system further comprises a second miniature circuit breaker, a third miniature circuit breaker, a 24-volt switching power supply, a cooling fan, a lighting lamp, a five-hole socket, a multifunctional power meter and a current transformer; The input end of the second miniature circuit breaker is connected to the output end of the step-down transformer, and the output end of the second miniature circuit breaker is connected to the 24-volt switching power supply; The input end of the third miniature circuit breaker is connected to the output end of the step-down transformer, and the output end of the third miniature circuit breaker is connected to the input end of the cooling fan, the lighting lamp, the five-hole socket and the multifunctional power meter respectively, and the output end of the multifunctional power meter is connected to the current transformer.

9. The belt conveyance control system according to any one of claims 1-8, wherein, The belt conveying control system further comprises an industrial control screen and a network switch; The industrial control screen is connected to the network switch, and the network switch is connected to the input end of the programmable controller.

10. A belt conveyor system characterized in that, The belt conveyor system comprises a belt conveying system and the belt conveying control system according to any one of claims 1 to 9.

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