Tube expansion prevention device of tubular belt conveyor

Abstract

The invention relates to the technical field of tubular belt conveyors, in particular to a tubular belt conveyor tube expansion prevention device which comprises a detection unit, an adjusting unit and a control unit. The detection unit monitors pressure distribution of the section of a conveying pipe in real time through a pressure sensor array, the adjusting unit intervenes material accumulation or block material blockage through a telescopic mechanism and a push plate assembly, and the control unit achieves data collection and analysis and instruction output. Preferably, the device further comprises an angle adjusting mechanism, a lubricating assembly and a wireless communication module, so that the adaptability and the remote monitoring capability are enhanced. The pipe expansion risk can be found and actively intervened in time, the running safety and stability of the conveyor are improved, and the method is suitable for various bulk material conveying scenes.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of conveying machinery, and particularly relates to a pipe-shaped belt conveyor anti-pipe-expanding device. BACKGROUND

[0002] With the wide application of the pipe-shaped belt conveyor in the bulk material conveying field, the pipe-expanding problem caused by material accumulation, blockage and other reasons during the operation of the pipe-shaped belt conveyor is increasingly prominent. The pipe-expanding not only affects the conveying efficiency, but also can cause serious faults such as belt tearing and roller damage, thereby causing shutdown for maintenance and affecting the continuity and stability of the whole production line. Therefore, it is of important engineering significance and application value to develop a device capable of effectively preventing the pipe-shaped belt conveyor from pipe-expanding.

[0003] Through retrieval, a pipe-shaped belt conveyor anti-large-block-material pipe-expanding device with publication number CN108328207B is disclosed, and the publication date is September 3, 2019. The technical scheme sets a bucket wheel type material taking mechanism at the front end of the conveyor, and uses the rotating material taking bucket to pick up the large block material from the conveying belt in advance and separate it, so as to avoid the large block material from entering the pipe-shaped forming section to cause pipe-expanding. Although the device can reduce the pipe-expanding phenomenon caused by the large block material to a certain extent, it only pre-processes the material source and cannot monitor and intervene in the abnormal filling condition of the material that has entered the forming section in real time. In addition, the device has a complex structure, needs to be additionally configured with a speed reducer, a support frame and a material receiving system, occupies a large space, and is only suitable for a material scene with a specific particle size distribution, and has poor universality.

[0004] Through retrieval, a pipe-shaped belt conveyor anti-pipe-expanding detection method and device with publication number CN116280998B are disclosed, and the publication date is June 24, 2025. The technical scheme measures the cross-sectional shape of the conveying pipe by using a laser scanning sensor, and calculates the equivalent diameter through equal circularization transformation. When the equivalent diameter exceeds the set threshold value, it is determined that there is a pipe-expanding risk and a warning is issued. The method realizes non-contact online monitoring of the pipe-expanding state, and has high detection accuracy and reliability. However, the scheme is only for detection and warning functions, lacks a corresponding execution mechanism for active intervention or automatic adjustment, cannot realize closed-loop control of “detection-response-regulation”, and still needs to rely on manual shutdown for processing, which is difficult to meet the demand of automatic protection of the intelligent continuous conveying system.

[0005] The above problems show that in the prior art, either the material is intercepted only from the physical structure, and the function is single and the adaptability is poor, or only the detection and warning are realized, and the linkage control means is lacked, and the pipe-expanding accident cannot be fundamentally prevented. Therefore, a comprehensive anti-pipe-expanding device integrating detection, judgment and mechanical adjustment is urgently needed to improve the safety, stability and automation level of the pipe-shaped belt conveyor operation.

[0006] The present application provides a tubular belt conveyor anti-bulging device, which aims to overcome the shortcomings of the prior art, realize active identification and mechanical intervention of bulging risk, and guarantee continuous and efficient operation of the conveying system. SUMMARY

[0007] The present application relates to a tubular belt conveyor anti-bulging device, which comprises a detection unit, an adjusting unit and a control unit. The detection unit is installed outside the forming section of the conveyor for real-time monitoring of the cross-sectional shape change of the conveying pipe; the adjusting unit is arranged inside the forming section of the conveyor and cooperates with the detection unit to intervene in the material accumulation or blockage; and the control unit is connected to the detection unit and the adjusting unit by signals to realize data acquisition, analysis and output of execution instructions.

[0008] The detection unit comprises a pressure sensor array, a signal processor and a fixed support. The pressure sensor array is uniformly distributed along the outer wall of the conveying pipe, each pressure sensor is fixed to the fixed support by bolts, and the fixed support is fixed to the outer wall of the conveying pipe by a buckle structure. The output end of the pressure sensor array is connected to the signal processor by wires, and the signal processor is embedded in the control unit to convert the data collected by the pressure sensor into a cross-sectional pressure distribution map.

[0009] The adjusting unit comprises a telescopic mechanism, a guide rail, a push plate assembly and a drive motor. The guide rail is symmetrically arranged along the inner wall of the conveying pipe, and its two ends are fixed to the conveyor frame by welding. The telescopic mechanism comprises a lead screw, a sliding block and a limit block. The lead screw is installed at one end of the guide rail through a bearing seat, and its other end is connected to the output shaft of the drive motor through a coupling. The drive motor is fixed to the conveyor frame by bolts. The sliding block is sleeved on the lead screw and realizes linear motion through thread cooperation. The limit block is fixed to both ends of the guide rail to limit the stroke range of the sliding block. The push plate assembly comprises a push plate, a connecting rod and an elastic buffer layer. The push plate is fixedly connected to the sliding block through the connecting rod, and the elastic buffer layer is attached to the outer surface of the push plate to reduce the hard contact between the push plate and the material.

[0010] Preferably, the push plate assembly further comprises an angle adjusting mechanism, which comprises a rotating shaft and a locking nut. The rotating shaft penetrates the push plate and is rotationally connected to the connecting rod. The locking nut is used to fix the angle position of the rotating shaft to adapt to the needs of different material forms.

[0011] Preferably, the control unit comprises a microprocessor, a storage module and a display module. The microprocessor is installed in the shell of the control unit through a circuit board, with an input end connected to the signal processor and an output end connected to the driving motor. The storage module is installed on the circuit board through a slot and is used for storing pressure distribution data and historical operation records. The display module is embedded on the surface of the shell of the control unit and is used for real-time display of the pressure distribution state and system operation parameters.

[0012] Preferably, the detection unit further comprises a temperature compensation module connected to the signal processor through a wire, which is used for eliminating the influence of environmental temperature change on the measurement accuracy of the pressure sensor.

[0013] Preferably, the adjusting unit further comprises a lubricating assembly comprising an oil nozzle and an oil pipe, wherein the oil nozzle is installed on the bearing seat of the lead screw, and the oil pipe is connected to the oil nozzle at one end and to a lubricating oil tank at the other end, and is used for regularly providing lubrication for the lead screw.

[0014] Preferably, the control unit further comprises a wireless communication module connected to the microprocessor through an interface, which is used for uploading the detection data and operation state to a remote monitoring platform, so as to facilitate the operation personnel to master the equipment operation in real time.

[0015] The detection unit of the present application can monitor the pressure distribution of the cross section of the conveying pipe in real time. When an abnormal pressure value is detected, the control unit analyzes whether the pipe expansion risk occurs according to a preset algorithm and sends an execution instruction to the adjusting unit. The driving motor in the adjusting unit drives the lead screw to rotate, so that the sliding block moves along the guide rail, and the push plate assembly acts to push or disperse the accumulated material, thereby realizing active intervention on the pipe expansion phenomenon.

[0016] The present application has the advantages that: the detection unit can monitor the pressure distribution of the cross section of the conveying pipe in real time through the pressure sensor array, and can timely find abnormal conditions caused by material accumulation or blockage; the adjusting unit can mechanically intervene in abnormal filling conditions through the cooperation of the telescopic mechanism and the push plate assembly, so as to avoid further deterioration of the pipe expansion phenomenon; the control unit integrates data acquisition, analysis and execution functions to form a closed-loop control of "detection-judgment-regulation", which significantly improves the safety and stability of the tubular belt conveyor operation. In addition, the design of the angle adjusting mechanism and the lubricating assembly further enhances the adaptability and reliability of the device, making it suitable for various bulk material conveying scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0018] Figure 2 It is a schematic diagram of the structure of the control unit.

[0019] Figure 3 This is a schematic diagram of the adjustment unit.

[0020] Figure 4 for Figure 3 A magnified diagram of region A.

[0021] The attached figures are labeled as follows: 1. Detection Unit; 11. Pressure Sensor Array; 111. Pressure Sensor; 12. Signal Processor; 13. Fixing Bracket; 14. Temperature Compensation Module; 2. Adjustment Unit; 21. Telescopic Mechanism; 211. Lead Screw; 212. Slider; 213. Limit Block; 22. Guide Rail; 23. Push Plate Assembly; 231. Push Plate; 232. Connecting Rod; 233. Elastic Buffer Layer; 234. Angle Adjustment Mechanism; 2341. Rotating Shaft; 2342. Locking Nut; 24. Drive Motor; 25. Lubrication Assembly; 251. Oil Nozzle; 252. Oil Pipe; 3. Control Unit; 31. Microprocessor; 32. Storage Module; 33. Display Module; 34. Wireless Communication Module. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Specific implementation examples are given below.

[0024] This invention provides an anti-expansion device for a tubular belt conveyor, the structure and working principle of which are described in the attached diagram. Figure 1 To be continued Figure 4 A detailed demonstration has been provided. The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can clearly understand and implement the technical solution.

[0025] like Figure 1 As shown, the anti-expansion tube device of the present invention includes a detection unit 1, an adjustment unit 2, and a control unit 3. The detection unit 1 is installed on the outside of the forming section of the conveyor, the adjustment unit 2 is located inside the forming section of the conveyor, and the control unit 3 is connected to the detection unit 1 and the adjustment unit 2 via signals to form a complete closed-loop control system.

[0026] The detection unit 1 is composed of a pressure sensor array 11, a signal processor 12, a fixed support 13 and a temperature compensation module 14. The pressure sensor array 11 is uniformly distributed along the outer wall of the conveying pipe, and each pressure sensor 111 is fixed on the fixed support 13 by bolts, and the fixed support 13 is fixedly connected with the outer wall of the conveying pipe by a buckle structure. As shown in Figure 2 , the output end of the pressure sensor array 11 is connected with the signal processor 12 through wires, and the signal processor 12 is embedded in the control unit 3, which is used to convert the data collected by the pressure sensor 111 into a cross-sectional pressure distribution diagram. The temperature compensation module 14 is connected to the signal processor 12 through wires, which is used to eliminate the influence of environmental temperature change on the measurement accuracy of the pressure sensor 111.

[0027] The adjusting unit 2 includes a telescopic mechanism 21, a guide rail 22, a push plate assembly 23, a driving motor 24 and a lubricating assembly 25. As shown in Figure 3 , the guide rail 22 is symmetrically arranged along the inner wall of the conveying pipe, and its two ends are fixed on the conveyor frame by welding. The telescopic mechanism 21 includes a lead screw 211, a sliding block 212 and a limiting block 213. The lead screw 211 is installed on one end of the guide rail 22 through a bearing seat, and the other end is connected with the output shaft of the driving motor 24 through a shaft coupling. The driving motor 24 is fixed on the conveyor frame by bolts. The sliding block 212 is sleeved on the lead screw 211 and realizes linear motion through thread cooperation. The limiting block 213 is fixed on both ends of the guide rail 22 to limit the stroke range of the sliding block 212. The push plate assembly 23 includes a push plate 231, a connecting rod 232, an elastic buffer layer 233 and an angle adjusting mechanism 234. The push plate 231 is fixedly connected with the sliding block 212 through the connecting rod 232, and the elastic buffer layer 233 is pasted on the outer surface of the push plate 231 to reduce the hard contact between the push plate 231 and the materials. Figure 4 As shown in , the angle adjusting mechanism 234 includes a rotating shaft 2341 and a locking nut 2342. The rotating shaft 2341 penetrates through the push plate 231 and is rotationally connected with the connecting rod 232. The locking nut 2342 is used to fix the angle position of the rotating shaft 2341 to adapt to the needs of different material forms. The lubricating assembly 25 includes an oil nozzle 251 and an oil pipe 252. The oil nozzle 251 is installed on the bearing seat of the lead screw 211, and the oil pipe 252 is connected with the oil nozzle 251 at one end and with a lubricating oil tank at the other end to regularly provide lubrication for the lead screw 211.

[0028] The control unit 3 comprises a microprocessor 31, a storage module 32, a display module 33 and a wireless communication module 34. The microprocessor 31 is mounted in the shell of the control unit 3 through a circuit board, with an input end connected to the signal processor 12 and an output end connected to the driving motor 24. The storage module 32 is mounted on the circuit board through a slot and used for storing pressure distribution data and historical operation records. The display module 33 is embedded on the surface of the shell of the control unit 3 and used for displaying the pressure distribution state and system operation parameters in real time. The wireless communication module 34 is connected to the microprocessor 31 through an interface and used for uploading the detection data and operation state to a remote monitoring platform, so that the operating personnel can master the equipment operation in real time.

[0029] In actual application, the working process of the present application is as follows: when the conveyor is running, the pressure sensor array 11 monitors the pressure distribution state of the cross section of the conveying pipe in real time and transmits the collected pressure data to the signal processor 12. The signal processor 12 converts the pressure data into a cross section pressure distribution graph and transmits it to the microprocessor 31. The microprocessor 31 analyzes whether there is an abnormal pressure value in the pressure distribution graph according to a preset algorithm. If an abnormal pressure value is detected, the microprocessor 31 judges that there may be a pipe expansion risk caused by material accumulation or blockage and sends an execution instruction to the driving motor 24. After receiving the instruction, the driving motor 24 starts and drives the screw rod 211 to rotate, so that the sliding block 212 moves along the guide sliding rail 22. The movement of the sliding block 212 drives the push plate assembly 23 to act, and the push plate 231 pushes or disperses the accumulated material, so as to avoid the further deterioration of the pipe expansion phenomenon.

[0030] During the action process of the push plate assembly 23, the elastic buffer layer 233 reduces the hard contact between the push plate 231 and the material, avoiding damage to the inner wall of the conveying pipe or the material. If it is necessary to adjust the angle of the push plate 231 to adapt to different material forms, the locking nut 2342 can be loosened, the push plate 231 can be rotated to the appropriate angle, and then the locking nut 2342 can be locked again to complete the angle adjustment. In addition, the lubricating assembly 25 regularly provides lubrication for the screw rod 211, ensuring the smooth operation of the telescopic mechanism 21.

[0031] During the long-time running process, the temperature compensation module 14 continuously monitors the change of the environmental temperature and corrects the measurement data of the pressure sensor 111 through the signal processor 12, ensuring the accuracy of the pressure distribution graph. At the same time, the storage module 32 records the pressure distribution data and system operation parameters of each running, facilitating subsequent analysis and troubleshooting. The wireless communication module 34 uploads the detection data and operation state to the remote monitoring platform in real time, and the operating personnel can understand the equipment operation through the monitoring platform and remotely intervene when necessary.

[0032] The present application realizes active intervention on the pipe expansion phenomenon of the tubular belt conveyor through the synergistic action of the detection unit 1, the adjustment unit 2 and the control unit 3. The detection unit 1 monitors the cross-sectional pressure distribution of the conveying pipe in real time through the pressure sensor array 11, the adjustment unit 2 mechanically intervenes in the abnormal filling situation through the synergistic action of the telescopic mechanism 21 and the push plate assembly 23, and the control unit 3 integrates data acquisition, analysis and execution functions to form a closed-loop control of "detection-judgment-regulation". The design of the angle adjustment mechanism 234 and the lubricating assembly 25 further enhances the adaptability and reliability of the device, making it suitable for various bulk material conveying scenarios.

[0033] In order to better enable those skilled in the relevant art to fully understand and implement the present application, the specific implementation principles of the present application are further described below in conjunction with a specific application scenario.

[0034] Firstly, during the operation of the tubular belt conveyor, the pressure sensor array 11 of the detection unit 1 starts to collect pressure data of the outer wall of the conveying pipe in real time. The pressure sensors 111 are evenly distributed along the outer wall of the conveying pipe and are tightly connected with the conveying pipe through the fixed support 13 to ensure the stability of data collection. As shown in Figure 2 The pressure sensors 111 transmit the collected pressure signals to the signal processor 12, and the signal processor 12 processes the received signals to generate a cross-sectional pressure distribution map, which is transmitted to the microprocessor 31 in the control unit 3. In this process, the temperature compensation module 14 continuously monitors the environmental temperature changes and corrects the measurement values of the pressure sensors 111 through the signal processor 12, thereby eliminating the influence of temperature fluctuations on the accuracy of pressure measurement and ensuring the accuracy of the pressure distribution map.

[0035] When the microprocessor 31 receives the cross-sectional pressure distribution map, it analyzes whether there is an abnormal pressure value according to a preset algorithm. If it is detected that the pressure value in a certain area exceeds the set threshold, the microprocessor 31 determines that there is a risk of material accumulation or blockage of lumps in that area. At this time, the microprocessor 31 sends an execution instruction to the drive motor 24 in the adjustment unit 2. After the drive motor 24 is started, the lead screw 211 is rotated, and the sliding block 212 moves along the guide rail 22 under the action of the threads of the lead screw 211. The movement of the sliding block 212 is transmitted to the push plate assembly 23 through the connecting rod 232, and the push plate 231 acts to push or disperse the accumulated material. The elastic buffer layer 233 on the outer surface of the push plate 231 plays a buffering role when it contacts the material, avoiding damage to the inner wall of the conveying pipe or the material, while reducing the impact of mechanical impact on the device itself.

[0036] During the movement of the push plate 231, the angle adjusting mechanism 234 can adjust the angle of the push plate 231 according to the requirements of the material form. Specifically, the operator can loosen the locking nut 2342, rotate the push plate 231 to the appropriate angle, and then lock the locking nut 2342 again to complete the angle adjustment. This design enables the push plate assembly 23 to adapt to different forms of materials, enhancing the applicability of the device. In addition, the lubricating assembly 25 regularly lubricates the lead screw 211. The oil nozzle 251 delivers lubricating oil to the bearing seat of the lead screw 211 through the oil pipe 252, ensuring smooth operation of the telescopic mechanism 21 and prolonging the service life of the device.

[0037] During long-term operation, the storage module 32 records the pressure distribution data and system operation parameters of each operation, facilitating subsequent analysis and troubleshooting. The wireless communication module 34 uploads the detection data and operation status to the remote monitoring platform, and the operator can monitor the device operation in real time through the monitoring platform and remotely intervene when necessary. For example, when the remote monitoring platform shows abnormal pressure distribution in a certain period, the operator can analyze the historical data and adjust the system operation parameters through remote instructions to optimize the anti-bulging effect.

[0038] Through the above steps, the present application realizes active intervention in the bulging phenomenon of the tubular belt conveyor. The detection unit 1 monitors the cross-sectional pressure distribution of the conveying pipe in real time through the pressure sensor array 11, the adjustment unit 2 mechanically intervenes in abnormal filling conditions through the telescopic mechanism 21 and the push plate assembly 23, and the control unit 3 integrates data acquisition, analysis and execution functions to form a complete closed-loop control. The design of the angle adjusting mechanism 234 and the lubricating assembly 25 further improves the adaptability and reliability of the device, making it suitable for various bulk material conveying scenarios.

[0039] The contents not described in detail in the specification are all existing technologies known to those skilled in the art, and the model parameters of each appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electric appliance control elements not mentioned belong to existing technologies, so they are not shown in the figure and will not be described here.

[0040] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent substitutions or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A tube expansion prevention device for a tubular belt conveyor, characterized in that, It includes a detection unit (1), an adjustment unit (2), and a control unit (3). The detection unit (1) is installed on the outside of the forming section of the conveyor and is used to monitor changes in the cross-sectional shape of the conveying pipe. The adjustment unit (2) is located inside the forming section of the conveyor and is used to intervene in material accumulation or block jamming. The control unit (3) is connected to the detection unit (1) and the adjustment unit (2) via a signal and is used for data acquisition, analysis, and execution command output.

2. The anti-expansion device for a tubular belt conveyor according to claim 1, characterized in that, The detection unit (1) includes a pressure sensor array (11), a signal processor (12), and a fixed bracket (13). The pressure sensor array (11) is evenly distributed along the outer wall of the delivery pipe. Each pressure sensor (111) is fixed to the fixed bracket (13) by bolts. The fixed bracket (13) is fixed to the outer wall of the delivery pipe by a snap-fit ​​structure. The output end of the pressure sensor array (11) is connected to the signal processor (12) by wires.

3. The anti-expansion device for a tubular belt conveyor according to claim 2, characterized in that, The adjustment unit (2) includes a telescopic mechanism (21), a guide rail (22), a push plate assembly (23), and a drive motor (24). The guide rail (22) is symmetrically arranged on both sides of the inner wall of the conveying pipe, and its two ends are fixed to the conveyor frame by welding. The telescopic mechanism (21) includes a lead screw (211), a slider (212), and a limiting block (213). The lead screw (211) is installed on one end of the guide rail (22) through a bearing seat, and its other end is connected to the output shaft of the drive motor (24) through a coupling. The slider (212) is sleeved on the lead screw (211) and achieves linear motion through threaded engagement. The limiting block (213) is fixed at both ends of the guide rail (22).

4. The anti-expansion device for a tubular belt conveyor according to claim 3, characterized in that, The push plate assembly (23) includes a push plate (231), a connecting rod (232), and an elastic buffer layer (233). The push plate (231) is fixedly connected to the slider (212) through the connecting rod (232), and the elastic buffer layer (233) is attached to the outer surface of the push plate (231).

5. The anti-expansion device for a tubular belt conveyor according to claim 4, characterized in that, The push plate assembly (23) further includes an angle adjustment mechanism (234), which includes a rotating shaft (2341) and a locking nut (2342). The rotating shaft (2341) passes through the push plate (231) and is rotatably connected to the connecting rod (232). The locking nut (2342) is used to fix the angular position of the rotating shaft (2341).

6. The anti-expansion device for a tubular belt conveyor according to claim 1, characterized in that, The control unit (3) includes a microprocessor (31), a storage module (32) and a display module (33). The microprocessor (31) is installed in the housing of the control unit (3) via a circuit board. Its input end is connected to a signal processor (12) and its output end is connected to a drive motor (24). The storage module (32) is installed on the circuit board via a slot. The display module (33) is embedded in the outer surface of the control unit (3).

7. The anti-expansion device for a tubular belt conveyor according to claim 2, characterized in that, The detection unit (1) further includes a temperature compensation module (14), which is connected to the signal processor (12) via a wire.

8. The anti-expansion device for a tubular belt conveyor according to claim 3, characterized in that, The adjustment unit (2) further includes a lubrication assembly (25), which includes an oil nozzle (251) and an oil pipe (252). The oil nozzle (251) is installed on the bearing seat of the lead screw (211), and one end of the oil pipe (252) is connected to the oil nozzle (251), and the other end is connected to the lubricating oil tank.

9. The anti-expansion device for a tubular belt conveyor according to claim 6, characterized in that, The control unit (3) further includes a wireless communication module (34), which is connected to the microprocessor (31) via an interface.

10. The anti-expansion device for a tubular belt conveyor according to claim 1, characterized in that, The drive motor (24) is fixed to the conveyor frame by bolts.

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