An online monitoring system for belt conveying blockage phenomenon

Abstract

The utility model discloses a kind of on-line monitoring systems with conveying blockage phenomenon, it is related to material conveying technical field, including: for conveying material conveying unit and for monitoring whether the monitoring mechanism of material stays in conveying belt, monitoring mechanism includes monitor, the probe of monitor is set to the easy blockage position of conveying unit, monitor is set to dislocation with material conveying path;In the utility model, monitoring mechanism is used to replace artificial monitoring, not only can real-time monitoring to easy blockage position, but also can more timely monitor to blockage phenomenon, can save manpower, eliminate the economic loss problem caused by long-time blockage.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, and in particular to an online monitoring system for material blockage during conveying. Background Technology

[0002] The most commonly used equipment for material handling is the conveyor belt. Conveyor belts can be used to automatically transport materials, saving manpower and resources. For longer or turning conveyor paths, multiple conveyor belts are often used in combination to achieve the desired transport.

[0003] Material transfer between adjacent conveyor belts is primarily achieved through elevation differences. The main principle is that the end of the preceding conveyor belt is higher than the beginning of the following conveyor belt, creating a elevation difference. By vertically aligning the ends of the preceding and following conveyor belts, material transfer can be achieved. However, at the connection point of the two conveyor belts, localized blockages may occur due to factors such as material jamming, entanglement, and slippage, depending on the specific operating conditions. If these blockages are not quickly detected and addressed, they can worsen. Currently, the solution is manual monitoring, which requires significant manpower and time for monitoring and clearing blockages. Furthermore, delayed detection can easily lead to product damage or equipment overload, resulting in economic losses.

[0004] Therefore, there is an urgent need for an online monitoring system for conveyor blockage phenomena that can be automatically monitored. Utility Model Content

[0005] The purpose of this invention is to provide an online monitoring system for material blockage in conveyors, in order to solve the problems existing in the prior art. This system utilizes a monitoring agency to specifically monitor locations prone to blockage, replacing manual monitoring.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides an online monitoring system for material blockage on a conveyor belt, including a conveying unit for conveying materials and a monitoring mechanism for monitoring whether materials stop on the conveyor belt. The monitoring mechanism includes a monitor, the probe of which is set to correspond to the easily blocked position of the conveying unit, and the monitor is offset from the material conveying path.

[0007] Preferably, the monitor is a through-beam photoelectric switch, with the transmitting end and receiving end of the through-beam photoelectric switch located on both sides of the material conveying path, and the transmitting end and receiving end of the through-beam photoelectric switch being set at the easily blocked positions of the conveying unit.

[0008] Preferably, the monitoring mechanism further includes an audible and visual alarm module, and both the monitor and the audible and visual alarm module are electrically connected to the control system.

[0009] Preferably, the monitoring mechanism further includes an emergency stop module for emergency stopping of the conveying unit, and both the monitor and the emergency stop module are electrically connected to the control system.

[0010] Preferably, the control system includes a time relay with a delayed start function.

[0011] Preferably, the control system further includes a power supply and an intermediate relay for supplying power to the time relay and the through-beam photoelectric switch.

[0012] Preferably, the monitor is a camera, and the camera lens of the camera is set to correspond to the easily blocked position of the conveying unit.

[0013] Preferably, the conveying unit includes a first conveyor belt and a second conveyor belt, the conveying end of the first conveyor belt is higher than the conveying beginning of the second conveyor belt, and the material drop area of ​​the second conveyor belt corresponding to the first conveyor belt is the easy-clogging position.

[0014] Preferably, the second conveyor belt is inclined, and the horizontal height of the beginning of the second conveyor belt is lower than the horizontal height of the end.

[0015] Preferably, the distance between the through-beam photoelectric switch and the conveying end of the first conveyor belt is less than the length of the material.

[0016] The present invention achieves the following main technical effects compared to the prior art: Using monitoring agencies to replace manual monitoring not only allows for real-time monitoring of areas prone to blockage, but also enables more timely detection of material blockages, saving manpower and eliminating economic losses caused by prolonged blockages.

[0017] The other solutions of this utility model achieve the following technical effects compared to the prior art: The combination of through-beam photoelectric switches and time relays enables the automatic output of blockage signals using the delay function of the time relays, eliminating the need for a PLC control system. This allows the system to be deployed in areas without a PLC control system, thus expanding its applicability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the online monitoring system for material blockage during conveying, as described in an embodiment of the present invention. Figure 2 This is a top view of the online monitoring system for material blockage in the present invention. Figure 3 This is an electrical schematic diagram of the online monitoring system for material blockage during conveying, as described in this embodiment of the invention. Figure 4 This is a schematic diagram of the component layout and wiring of the control box of the online monitoring system for material blockage during conveying, as described in this embodiment of the present invention. Among them, 1. First conveyor belt; 2. Second conveyor belt; 3. Through-beam photoelectric switch; 4. Transmitter; 5. Receiver; 6. Material; 7. Audible and visual alarm; 8. Control box; 9. Power supply; 10. Terminal block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The purpose of this invention is to provide an online monitoring system for material blockage in conveyors, in order to solve the problems existing in the prior art. This system utilizes a monitoring agency to specifically monitor locations prone to blockage, replacing manual monitoring.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Please refer to the following: Figures 1-4 As shown, an online monitoring system for material blockage on a conveyor belt is provided, including a conveying unit and a monitoring mechanism. The conveying unit is used to convey material 6, and the monitoring mechanism is used to monitor whether material 6 stops on the conveyor belt. The monitoring mechanism includes a monitor, and the probe of the monitor is set to the blockage-prone position of the conveying unit for real-time monitoring of the blockage-prone position. The monitor is misaligned with the conveying path of material 6 to avoid affecting the normal conveying of material 6. By using the monitoring mechanism to replace manual monitoring, not only can the blockage-prone position be monitored in real time, but the blockage phenomenon can also be detected more promptly, saving manpower and eliminating the economic losses caused by long-term blockage.

[0024] In one embodiment, the monitor is a through-beam photoelectric switch 3. The transmitting end 4 and the receiving end 5 of the through-beam photoelectric switch 3 are located on both sides of the material 6 conveying path. The transmitting end 4 and the receiving end 5 of the through-beam photoelectric switch 3 are both set at the easily blocked positions of the conveying unit. When the material 6 is being conveyed normally on the conveying unit, the time when the beam of the through-beam photoelectric switch 3 is blocked is related to the conveying speed of the conveying unit and the length of the material 6. For example, the conveying speed V 带 =1.2m / s, when the length of material 6 is L=0.5m, the normal time for material 6 to pass through the through-beam photoelectric switch 3 is t=L / V 带 =0.5m / 1.2m / s≈0.42s. Based on this duration, the control system can monitor whether material 6 is blocked. If the time when the beam of the through-beam photoelectric switch 3 is blocked is longer than the time when material 6 passes through under normal conveying conditions, it is determined that a blockage has occurred. Of course, a safety factor k can also be selected as needed. Multiplying this safety factor by the normal time when material 6 passes through the through-beam photoelectric switch 3, a set time can be obtained. This set time is longer than the normal time when material 6 passes through the through-beam photoelectric switch 3, which can avoid false alarms and ensure the accuracy of the system device. For example, k=1.5.

[0025] The monitoring mechanism also includes an audible and visual alarm module. Both the monitor and the audible and visual alarm module are electrically connected to the control system. When a blockage is detected, the blockage signal is transmitted to the audible and visual alarm module to trigger an audible and visual alarm, reminding the staff to clear the blockage. The audible and visual alarm module is the audible and visual alarm device 7.

[0026] The monitoring system also includes an emergency stop module for emergency shutdown of the conveying unit. Both the monitor and the emergency stop module are electrically connected to the control system. When a blockage is detected, the blockage signal is transmitted to the emergency stop module to stop the conveying unit. After the blockage is cleared by the staff, the conveying unit can be restarted.

[0027] The audible and visual alarm module and the emergency stop module can be set separately or together. When both are set together, their respective response times need to be set. The response time of the audible and visual alarm is shorter than that of the emergency stop. If the staff clears the blocked material 6 before the emergency stop, the emergency stop will not be triggered, thus avoiding a significant impact on the continuity of production. Alternatively, the audible and visual alarm and the emergency stop can be designed to occur simultaneously, that is, the response times of both are the same, which can reduce the severity of the blockage.

[0028] If a PLC control system for the conveying unit is present near the monitor, the monitor can be connected to the PLC control system. If no PLC control system for the conveying unit is present nearby, the control system can be configured to include a time relay with a delayed start function. The time relay's delay function automatically outputs a blockage signal, eliminating the need for a PLC control system. This allows for deployment in areas without a nearby PLC control system, increasing its applicability. The delay time of the time relay is slightly longer than the normal passage time of material 6 through the through-beam photoelectric switch 3, or it can be the normal passage time of material 6 through the through-beam photoelectric switch 3 multiplied by a safety factor. In this case, if the conveying unit operates normally and material 6 passes normally, the energization time of the time relay is less than the delayed start time, thus the delayed start condition of the time relay is not met, and the blockage characteristic signal is not output. If the conveying unit operates normally and material 6 passes normally, the energization time of the time relay is less than the delayed start time, and the delayed start condition of the time relay is not met, so the blockage characteristic signal is not output. If a blockage occurs in the conveying unit, the through-beam photoelectric switch 3 will be continuously blocked. If the energizing time of the time relay is longer than the delayed start time, the time relay's delayed start condition will be met, and it will continuously output a signal. The blockage characteristic signal will be output to the audible and visual alarm module or the emergency stop module. When both the audible and visual alarm module and the emergency stop module are present, two time relays need to be set up with different delay times. The one with the shorter delay time will be linked to the audible and visual alarm module, and this delay time should be slightly longer than the normal passage time of material 6 through the through-beam photoelectric switch 3, or the normal passage time of material 6 through the through-beam photoelectric switch 3 multiplied by a safety factor. The one with the longer delay time will be linked to the emergency stop module. The delay time of this time relay can be set as needed. Here, "as needed" refers to the time after the audible and visual alarm is manually determined before the emergency stop of the conveying unit is initiated.

[0029] When two time relays are set up, two characteristic signals, A and B, are output respectively. Signal A is normally closed and is used to trigger the emergency stop circuit of the conveyor unit to realize the interlocking trip protection after the blockage occurs, and quickly stop the blockage caused by the continued operation of the conveyor unit. Signal B is normally open and is used to trigger the audible and visual alarm 7 to alert the operator after the blockage occurs, so that the operator can quickly obtain the blockage information, clear the blockage in time, and restore production.

[0030] The control system also includes a power supply 9 and an intermediate relay for powering the time relay and the through-beam photoelectric switch 3. The power supply 9 is responsible for providing 24V DC power. The intermediate relay is used for voltage conversion and low-voltage control of high-voltage (photoelectric signal 24V DC, time relay power supply 9 220V AC). Multiple components are connected by control cables for signal transmission and power supply to system components. The control circuit is connected by terminal block 10. The power supply 9 and time relay and other components are installed inside the control box 8, and the audible and visual alarm 7 is installed outside the control box 8.

[0031] In one embodiment, the monitor is a camera. The camera lens is set to the easily blocked position of the conveying unit. The real-time captured image of the camera can be used in conjunction with the calculation system to obtain the residence time of the material 6 at the easily blocked position in order to determine whether the easily blocked position is blocked.

[0032] The conveying unit in this embodiment includes a first conveyor belt 1 and a second conveyor belt 2. The conveying end of the first conveyor belt 1 is higher than the conveying beginning of the second conveyor belt 2. The material drop area of ​​the second conveyor belt 2 corresponding to the first conveyor belt 1 is a position prone to blockage.

[0033] The second conveyor belt 2 is inclined, with the starting horizontal height of the second conveyor belt 2 being lower than the ending horizontal height, so as to better receive the material 6.

[0034] The distance between the through-beam photoelectric switch 3 and the conveying end of the first conveyor belt 1 can be designed to be less than the length of the material 6, so as to avoid the situation where the material 6 gets stuck between the through-beam photoelectric switch 3 and the conveying end of the first conveyor belt 1 and is not monitored by the through-beam photoelectric switch 3.

[0035] In actual use, as the material 6 is conveyed by the conveying unit, after falling from the first conveyor belt 1 to the second conveyor belt 2, it will be monitored by the monitor. If the monitor detects that the material 6 stays in the easily blocked position for a long time, it will trigger an audible and visual alarm and / or the emergency stop of the conveying unit to remind the staff to clear the blockage. After the blockage is cleared, the conveying unit will continue to convey the material 6.

[0036] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0037] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An online monitoring system for material blockage during conveying, characterized in that, It includes a conveying unit for conveying materials and a monitoring mechanism for monitoring whether materials stop on the conveyor belt. The monitoring mechanism includes a monitor, the probe of which is set to the easily blocked position of the conveying unit, and the monitor is offset from the material conveying path.

2. The online monitoring system for material blockage in conveyor belts according to claim 1, characterized in that, The monitor is a through-beam photoelectric switch, with the transmitting and receiving ends of the through-beam photoelectric switch located on both sides of the material conveying path. The transmitting and receiving ends of the through-beam photoelectric switch are set at the easily blocked positions of the conveying unit.

3. The online monitoring system for material blockage in conveyor belts according to claim 2, characterized in that, The monitoring mechanism also includes an audible and visual alarm module, and both the monitor and the audible and visual alarm module are electrically connected to the control system.

4. The online monitoring system for material blockage in a conveyor belt according to claim 2, characterized in that, The monitoring mechanism also includes an emergency stop module for emergency shutdown of the conveying unit, and both the monitor and the emergency stop module are electrically connected to the control system.

5. The online monitoring system for material blockage in conveyor belts according to claim 3 or 4, characterized in that, The control system includes a time relay with a delayed start function.

6. The online monitoring system for material blockage in a conveyor belt according to claim 5, characterized in that, The control system also includes a power supply and an intermediate relay for supplying power to the time relay and the through-beam photoelectric switch.

7. The online monitoring system for material blockage in a conveyor belt according to claim 1, characterized in that, The monitor is a camera, and the camera lens of the camera is set at the easily blocked position of the conveying unit.

8. The online monitoring system for material blockage in a conveyor belt according to claim 2, characterized in that, The conveying unit includes a first conveyor belt and a second conveyor belt. The conveying end of the first conveyor belt is higher than the conveying beginning of the second conveyor belt. The material drop area of ​​the second conveyor belt corresponding to the first conveyor belt is the easy-clogging position.

9. The online monitoring system for material blockage in a conveyor belt according to claim 8, characterized in that, The second conveyor belt is inclined, and the horizontal height of the beginning of the second conveyor belt is lower than the horizontal height of the end.

10. The online monitoring system for material blockage in a conveyor belt according to claim 8, characterized in that, The distance between the through-beam photoelectric switch and the end of the first conveyor belt is less than the length of the material.

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