Conveyor cooperative control system and method

Abstract

The invention relates to a conveyor cooperative control system and method.The system comprises a belt conveyor, a discharging device is arranged at the front conveying end of an upper belt of the belt conveyor, the discharging device is provided with a discharging electromagnetic valve, and material detection assemblies are arranged on the two sides of the front conveying end and the two sides of the rear conveying end of the upper belt of the belt conveyor; a plurality of sets of displacement sensors are arranged on the two sides of an upper belt of the belt conveyor in the conveying direction, a plurality of tension sensors are installed at the bottom of the upper belt of the belt conveyor, a tension adjusting roller is arranged on the top of the middle position of a lower belt of the belt conveyor, and the tension adjusting roller is connected with a tension adjusting air cylinder through a U-shaped support. The discharging electromagnetic valve, the material detection assembly, the displacement sensor, the tension sensor and the tension adjusting air cylinder are all connected with the controller. According to the intelligent control system for the belt conveyor, cooperative control over discharging, conveying speed, belt deflection, belt tension, dust removal, belt idling and belt cleaning can be achieved, intelligent control over the belt conveyor is completed, and safe, energy-saving and clean operation is achieved.

Description

Technical Field

[0001] This invention relates to the technical field of intelligent control of material transfer conveyors, and in particular to a collaborative control system and method for conveyors. Background Technology

[0002] Belt conveyors are frequently used to transport bulk materials or finished products. Their advantages include large transport capacity and long material transport distance, so they are widely used in ports, coal mines, transportation and other fields.

[0003] There are many risks involved in the material transport process of belt conveyors, such as belt misalignment, idling, insufficient tension, and excessive dust. Belt misalignment will directly cause the belt conveyor to malfunction, idling will waste energy, insufficient tension will exacerbate the risk of belt misalignment, and dust will have an adverse impact on the working environment. These factors restrict the normal operation of belt conveyors, so it is necessary to control these risks. Summary of the Invention

[0004] The present invention aims to address the shortcomings of the prior art by providing a conveyor collaborative control system and method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A conveyor collaborative control system includes a belt conveyor. A feeding device is located at the front end of the upper belt conveyor, and a feeding solenoid valve is installed at the outlet of the feeding device. Material detection components are installed on both sides of the front end and both sides of the rear end of the upper belt conveyor. Several sets of displacement sensors are installed on both sides of the upper belt conveyor along the conveying direction. Several tension sensors are installed at the bottom of the upper belt conveyor. A tension adjusting roller is located at the top of the middle position of the lower belt conveyor. The tension adjusting roller is mounted on a U-shaped bracket via a rotating shaft. A tension adjusting cylinder is connected to the bottom of the U-shaped bracket. The system also includes a controller. The feeding solenoid valve, material detection components, displacement sensors, tension sensors, and tension adjusting cylinder are all connected to the controller.

[0007] A speed sensor is installed on the power shaft of the belt conveyor that is connected to the motor. The speed sensor, motor and controller are connected together.

[0008] A guide plate is provided at the rear end of the belt conveyor in the direction of belt transmission.

[0009] A scraper is installed below the front end of the belt conveyor in the direction of belt transmission. A scraper cylinder is connected to the bottom of the scraper and is connected to the controller.

[0010] The belt conveyor is equipped with a dust collection hood, and several dust particle sensors are installed at the bottom of the dust collection hood. The dust collection hood is connected to a dust collection box through a pipe, and the dust collection box is connected to a fan. The dust particle sensors, the fan, and the controller are connected.

[0011] The dust collection box is equipped with a dust trap.

[0012] The material detection component includes a laser emitter mounted on one side of the belt of the belt conveyor and a laser receiver mounted on the other side of the belt of the belt conveyor. The laser emitter and laser receiver are connected to the controller.

[0013] The control method of the above-mentioned conveyor cooperative control system includes the following specific steps:

[0014] S1. Material feeding control:

[0015] Based on the set feeding quantity and feeding rate, the controller adjusts the opening and closing degree of the feeding solenoid valve to transmit the specified material onto the belt conveyor for conveying.

[0016] S2, Conveying speed control:

[0017] During the material conveying process, the speed sensor transmits the speed information of the power shaft to the controller. The controller compares it with the set speed parameters. If it is not within the allowable error range, it feeds back to the motor. The motor adjusts the speed to keep the conveying speed of the belt conveyor within the set range.

[0018] S3, Tension Adjustment:

[0019] The belt tension of the belt conveyor is detected by a tension sensor. The tension sensor transmits the signal to the controller, which determines whether the tension meets the requirements. If it does not meet the requirements, the tension regulating cylinder is activated. The tension regulating cylinder drives the tension regulating roller to rise or fall, thereby regulating the belt tension.

[0020] S4. Correction Control:

[0021] During the material conveying process, several sets of displacement sensors detect the position of the belt and transmit the signal to the controller. The controller determines that if the displacement deviation exceeds the set value, it proves that the belt has deviated. The controller then transmits the signal to the motor to stop the belt conveyor and perform belt correction operation.

[0022] S5. Dust control:

[0023] Sometimes, the materials on the belt conveyor can cause dust to spread. In this case, the dust particle sensor detects the dust spread and transmits it to the controller, which then starts the fan to perform dust removal.

[0024] S6. Anti-idle operation:

[0025] When neither of the two sets of material detection components detects the presence of material, a signal is transmitted to the controller. The controller determines that there is no material being conveyed on the belt, controls the motor to shut down, and stops the machine to avoid idling.

[0026] S7. Cleanup Operation:

[0027] The controller periodically controls the scraper cylinder to raise the scraper plate to contact the belt, cleaning and scraping the belt to keep it clean.

[0028] The beneficial effects of this invention are: this invention can achieve coordinated control of feeding, conveying speed, belt deflection, belt tension, dust removal, belt idling, and belt cleaning, thus completing the intelligent regulation of the belt conveyor and achieving safe, energy-saving, and clean operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a distribution diagram of the material detection components and displacement sensors;

[0031] In the picture:

[0032] 1-Belt conveyor; 2-Discharging device; 3-Discharging solenoid valve; 4-Material detection component; 5-Displacement sensor; 6-Tension sensor; 7-Tension adjusting roller; 8-U-shaped bracket; 9-Tension adjusting cylinder; 10-Controller; 11-Speed ​​sensor; 12-Guide plate; 13-Scraper plate; 14-Scraper cylinder; 15-Dust hood; 16-Dust particle sensor; 17-Dust collection box; 18-Fan; 19-Dust trap;

[0033] 401 - Laser emitter; 402 - Laser receiver;

[0034] The following will describe in detail, with reference to the accompanying drawings, embodiments of the present invention. Detailed Implementation

[0035] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0038] A conveyor collaborative control system, such as Figures 1 to 2 As shown, it includes a belt conveyor 1, a feeding device 2, a feeding solenoid valve 3, a material detection component 4, a displacement sensor 5, a tension sensor 6, a tension adjusting roller 7, a U-shaped bracket 8, a tension adjusting cylinder 9, a controller 10, a speed sensor 11, a guide plate 12, a scraper plate 13, a scraper cylinder 14, a dust collection hood 15, a dust particle sensor 16, a dust storage box 17, a fan 18, and a dust interception net 19.

[0039] The main components of a belt conveyor consist of a frame, a rotating shaft, a belt, and a motor, and it is the object monitored and regulated by the entire control system.

[0040] The belt conveyor 1 is equipped with a feeding device 2 at the front end of the belt conveyor. The feeding device 2 is equipped with a feeding solenoid valve 3 at the outlet. The feeding solenoid valve 3 is mainly used to control the feeding process. The feeding solenoid valve 3 is connected to the controller 10.

[0041] The controller 10 can be a Siemens PLC series, such as S7-200, S7-300, S7-400, etc.

[0042] Material detection components 4 are provided on both sides of the upper belt conveyor front end and both sides of the upper belt conveyor rear end. The material detection components 4 include a laser emitter 401 set on one side of the upper belt of the belt conveyor 1 and a laser receiver 402 set on the other side of the upper belt of the belt conveyor 1. The laser emitter 401 and the laser receiver 402 are connected to the controller 10.

[0043] Several sets of displacement sensors 5 are installed on both sides of the belt conveyor 1 along the conveying direction, and the displacement sensors 5 are connected to the controller 10.

[0044] Several tension sensors 6 are installed at the bottom of the upper belt of the belt conveyor 1. A tension adjusting roller 7 is provided at the top of the middle position of the lower belt of the belt conveyor 1. The tension adjusting roller 7 is installed on the U-shaped bracket 8 through a rotating shaft. A tension adjusting cylinder 9 is connected to the bottom of the U-shaped bracket 8. The tension sensors 6 and the tension adjusting cylinder 9 are both connected to the controller 10.

[0045] A speed sensor 11 is installed on the power shaft of the belt conveyor 1 that is connected to the motor. The speed sensor 11, the motor and the controller 10 are connected.

[0046] A guide plate 12 is provided at the rear end of the belt conveyor 1 in the direction of belt transmission.

[0047] A scraper 13 is provided below the front end of the belt conveyor 1 in the direction of belt transmission. A scraper cylinder 14 is connected to the bottom of the scraper 13 and is connected to the controller 10.

[0048] A dust collection hood 15 is provided above the belt conveyor 1, and several dust particle sensors 16 are provided at the bottom of the dust collection hood 15. The dust collection hood 15 is connected to a dust storage box 17 through a pipe, and a fan 18 is connected to the dust storage box 17. The dust particle sensors 16, the fan 18 and the controller 10 are connected.

[0049] The dust collection box 17 is equipped with a dust interception screen 19.

[0050] The control method of the above-mentioned conveyor cooperative control system includes the following specific steps:

[0051] S1. Material feeding control:

[0052] According to the set feeding amount and feeding rate, the controller 10 adjusts the opening and closing degree of the feeding solenoid valve 3 to transmit the specified material to the belt of the belt conveyor 1 for conveying.

[0053] S2, Conveying speed control:

[0054] During the material conveying process, the speed information of the power shaft is transmitted to the controller 10 through the speed sensor 11. The controller 10 compares the speed with the set speed parameters. If the speed is not within the allowable error range, it feeds back to the motor. The motor adjusts the speed so that the conveying speed of the belt conveyor 1 is controlled within the set range.

[0055] S3, Tension Adjustment:

[0056] The belt tension of the belt conveyor 1 is detected by the tension sensor 6. The tension sensor 6 transmits the signal to the controller 10. The controller 10 determines whether the tension meets the requirements. If it does not meet the requirements, the tension regulating cylinder 9 is activated. The tension regulating cylinder 9 drives the tension regulating roller 7 to rise or fall to regulate the belt tension.

[0057] S4. Correction Control:

[0058] During the material conveying process, several sets of displacement sensors 5 detect the position of the belt and transmit the signal to the controller 10. The controller 10 determines that if the displacement deviation exceeds the set value, it proves that the belt has deviated. The controller 10 transmits the signal to the motor to stop the belt conveyor 1 and perform belt correction operation.

[0059] S5. Dust control:

[0060] Sometimes the material on the belt conveyor 1 can cause dust to spread. At this time, the dust particle sensor 16 detects the dust spread and transmits it to the controller 10. The controller 10 then starts the fan 18 to perform dust removal.

[0061] S6. Anti-idle operation:

[0062] When neither of the two sets of material detection components 4 detects the presence of material, a signal is transmitted to the controller 10. The controller 10 determines that there is no material being conveyed on the belt, controls the motor to shut down, and stops the machine to avoid idling.

[0063] S7. Cleanup Operation:

[0064] The controller 10 periodically controls the scraper cylinder 14 to drive the scraper plate 13 to rise and contact the belt, cleaning and scraping the belt to keep it clean.

[0065] This invention can achieve coordinated control of feeding, conveying speed, belt deflection, belt tension, dust removal, belt idling, and belt cleaning, thus completing the intelligent regulation of the belt conveyor 1 and achieving safe, energy-saving, and clean operation.

[0066] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A conveyor collaborative control system, characterized in that, The system includes a belt conveyor (1), a feeding device (2) at the front end of the belt conveyor (1), a feeding solenoid valve (3) at the outlet of the feeding device (2), material detection components (4) on both sides of the front end and both sides of the rear end of the belt conveyor (1), several sets of displacement sensors (5) on both sides of the belt conveyor (1) along the conveying direction, several tension sensors (6) at the bottom of the belt conveyor (1), a tension adjusting roller (7) at the top of the middle position of the lower belt of the belt conveyor (1), the tension adjusting roller (7) is mounted on a U-shaped bracket (8) through a rotating shaft, and a tension adjusting cylinder (9) is connected to the bottom of the U-shaped bracket (8). The system also includes a controller (10), and the feeding solenoid valve (3), material detection components (4), displacement sensors (5), tension sensors (6), and tension adjusting cylinder (9) are all connected to the controller (10).

2. The conveyor collaborative control system according to claim 1, characterized in that, A speed sensor (11) is provided on the power shaft of the belt conveyor (1) connected to the motor. The speed sensor (11), the motor and the controller (10) are connected.

3. The conveyor collaborative control system according to claim 2, characterized in that, A guide plate (12) is provided at the rear end of the belt conveyor in the direction of belt transmission.

4. A conveyor collaborative control system according to claim 3, characterized in that, A scraper (13) is provided below the front end of the belt conveyor (1) in the direction of belt transmission. A scraper cylinder (14) is connected to the bottom of the scraper (13) and is connected to the controller (10).

5. A conveyor collaborative control system according to claim 4, characterized in that, A dust collection hood (15) is provided above the belt conveyor (1). Several dust particle sensors (16) are provided at the bottom of the dust collection hood (15). The dust collection hood (15) is connected to a dust storage box (17) through a pipe. The dust storage box (17) is connected to a fan (18). The dust particle sensors (16), the fan (18) and the controller (10) are connected.

6. A conveyor collaborative control system according to claim 5, characterized in that, The dust collection box (17) is equipped with a dust interception screen (19).

7. A conveyor collaborative control system according to claim 6, characterized in that, The material detection component (4) includes a laser emitter (401) installed on one side of the belt of the belt conveyor (1) and a laser receiver (402) installed on the other side of the belt of the belt conveyor (1). The laser emitter (401) and the laser receiver (402) are connected to the controller (10).

8. The control method for a conveyor cooperative control system according to claim 7, characterized in that, The specific steps are as follows: S1. Material feeding control: According to the set feeding amount and feeding rate, the opening and closing degree of the feeding solenoid valve (3) is controlled by the controller (10) to transmit the specified material to the belt of the belt conveyor (1) for conveying. S2, Conveying speed control: During the material conveying process, the speed information of the power shaft is transmitted to the controller (10) through the speed sensor (11). The controller (10) compares the speed with the set speed parameters. If it is not within the allowable error range, it feeds back to the motor. The motor adjusts the speed so that the conveying speed of the belt conveyor (1) is controlled within the set range. S3, Tension Adjustment: The belt tension of the belt conveyor (1) is detected by the tension sensor (6). The tension sensor (6) transmits the signal to the controller (10). The controller (10) determines whether the tension meets the requirements. If it does not meet the requirements, the tension regulating cylinder (9) is activated. The tension regulating cylinder (9) drives the tension regulating roller (7) to rise or fall to regulate the belt tension. S4. Correction Control: During the material conveying process, several sets of displacement sensors (5) detect the position of the belt and transmit the signal to the controller (10). The controller (10) determines that if the displacement deviation exceeds the set value, it proves that the belt has deviated. The controller (10) transmits the signal to the motor to stop the belt conveyor (1) and the belt is corrected. S5. Dust control: Sometimes the material on the belt conveyor (1) will cause dust to spread. At this time, the dust particle sensor (16) detects the dust spread and transmits it to the controller (10). The controller (10) starts the fan (18) to perform dust removal operation. S6. Anti-idle operation: When neither of the two sets of material detection components (4) detects the presence of material, the signal is transmitted to the controller (10). The controller (10) determines that there is no material being conveyed on the belt, controls the motor to shut down, and stops the machine to avoid idling. S7. Cleanup Operation: The controller (10) periodically controls the scraper cylinder (14) to drive the scraper plate (13) to rise and contact the belt, cleaning and scraping the belt to keep it clean.

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