Belt conveyor system and self-cleaning method

Abstract

The application provides a belt conveyor system and a self-cleaning method. The belt conveyor system comprises a belt conveyor, a damage detection device and a self-cleaning device corresponding to the damage detection device. The self-cleaning device comprises a detection cleaning box, a scraper dust removal unit, an air curtain dust removal unit, a rotary cleaning unit and a dust collection unit. The damage detection device is arranged in the detection cleaning box. The top of the detection cleaning box is provided with a material falling groove. The scraper dust removal unit is arranged on the detection cleaning box and comprises a scraper piece rotatably arranged on the top of the detection cleaning box. The air curtain dust removal unit and the rotary cleaning unit are both arranged inside the detection cleaning box. The air curtain dust removal unit is provided with a plurality of exhaust ports surrounding an air curtain for dust removal and dust suppression. The rotary cleaning unit is used for rotating and cleaning the surface of the damage detection device. The dust collection unit is arranged on one side of the detection cleaning box and communicates with the inside of the detection cleaning box. The cleaning effect of the damage detection device can be improved by adopting the scheme.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of self-cleaning of open-pit mine belt tear detection units, in particular to a belt conveyor system and a self-cleaning method. BACKGROUND

[0002] The damage detection device is one of the indispensable devices of the open-pit mine belt conveying system, and plays a role in detecting belt tear faults in the conveying process of the coal mine, and is a core device for ensuring the safety of belt conveying.

[0003] Due to the particularity of the coal mine environment, the damage detection device is affected by factors such as environment and operation process, and the detection effect of the damage detection device is easily affected by dust, coal slime and snow and other harsh working conditions, and false positives are prone to occur, affecting the stable operation of the coal mine production.

[0004] In view of the above problems, a self-cleaning device for the damage detection device is developed at present, but the existing self-cleaning device mainly relies on roller brushes and scrapers for cleaning operation. Although this method has a certain cleaning effect on the tear detection unit, there is a certain limitation in the cleaning area. At the same time, the existing self-cleaning device lacks cleaning and collecting effect on the external coal dust, snow and other sundries of the tear detection unit, affecting the detection effect. SUMMARY

[0005] The present application provides a belt conveyor system and a self-cleaning method to improve the cleaning effect of the damage detection device.

[0006] In order to achieve the above purpose, according to one aspect of the present application, a belt conveyor system is provided, which comprises a belt conveyor and a damage detection device arranged between the upper and lower belts of the belt conveyor. The belt conveyor system further comprises a self-cleaning device corresponding to the damage detection device, the self-cleaning device comprising a detection cleaning box, a scraper dust removal unit, a wind curtain dust removal unit, a rotating cleaning unit and a dust collecting unit. The damage detection device is arranged in the detection cleaning box, and the top of the detection cleaning box has a material falling groove; the scraper dust removal unit is arranged on the detection cleaning box and comprises a scraper piece rotatably arranged on the top of the detection cleaning box, the scraper piece being used to sweep the sundries on the top of the detection cleaning box into the detection cleaning box from the material falling groove; the wind curtain dust removal unit and the rotating cleaning unit are both arranged inside the detection cleaning box, the wind curtain dust removal unit having a plurality of exhaust ports, the plurality of exhaust ports surrounding a wind curtain for dust removal and dust suppression, and the rotating cleaning unit being used to rotate and clean the surface of the damage detection device; and the dust collecting unit is arranged on one side of the detection cleaning box and communicates with the inside of the detection cleaning box, the dust collecting unit being used to concentrate and discharge the sundries in the detection cleaning box.

[0007] Further, the scraping plate dust removal unit comprises a protection shell and a driving member and a transmission assembly arranged in the protection shell, the protection shell is fixedly arranged on one side of the detection cleaning box, the material falling groove is arranged on the top of the detection cleaning box near the side of the protection shell, the transmission assembly comprises a transmission gear and a gear shaft fixedly connected with the transmission gear, one end of the gear shaft protrudes from the top of the protection shell and is connected with one end of the scraping plate member, the scraping plate member is at least partially attached to the top of the detection cleaning box, the transmission assembly and the scraping plate member are arranged in at least two symmetrical groups, the transmission gears of the at least two groups of transmission assemblies are meshed with each other, and the driving member is drivingly connected with one of the transmission gears.

[0008] Further, the scraping plate member is an arc-shaped strip member and is chamfered on the side facing the top of the detection cleaning box, and a plurality of surrounding plates are arranged on the outer periphery of the top of the detection cleaning box, and the plurality of surrounding plates are arranged on the side away from the protection shell and the scraping plate member.

[0009] Further, the air curtain dust removal unit comprises an air compressor, an air duct and a plurality of air curtain assemblies connected in sequence, the plurality of air curtain assemblies are arranged on at least two sides and the bottom of the damage detection device, the air curtain assembly comprises an air pipe, an end cover and a plurality of air nozzles facing the damage detection device, one end of the air pipe is connected with the air duct, the end cover is arranged on the other end of the air pipe, a plurality of air nozzles are arranged along the extension direction of the air pipe and form a plurality of air outlets, and the extension directions of the plurality of air curtain assemblies are parallel to the axial direction of the damage detection device.

[0010] Further, the rotary cleaning unit comprises a driving assembly, a support frame group, a rotary scraping plate and a belt drive structure having a large pulley side and a small pulley side, the damage detection device and the rotary scraping plate are arranged side by side on the support frame group through bearing seats, the driving assembly is drivingly connected with the damage detection device through the large pulley side of the belt drive structure, and the driving assembly is rotatably connected with the rotary scraping plate through the small pulley side of the belt drive structure, so as to drive the damage detection device and the rotary scraping plate to rotate synchronously at different speeds, the rotary scraping plate has a plurality of scraping ends arranged at intervals along the circumferential direction thereof, and any one of the scraping ends is detachably tangent to the outer periphery of the damage detection device, so as to rotate and scrape the surface of the damage detection device.

[0011] Further, the driving assembly comprises a motor base, a driving motor arranged on the motor base and a shaft coupling, the motor base is arranged on one side in the axial direction of the detection cleaning box and is connected with the rotating shaft of the detection cleaning box through the shaft coupling; the rotary scraping plate comprises a central rotating shaft and a cylindrical scraping plate sleeved on the outer periphery of the central rotating shaft, the cylindrical scraping plate has a plurality of tooth-shaped plates arranged at intervals along the circumferential direction thereof and extending along the axial direction thereof, the plurality of tooth-shaped plates are arc-shaped in the rotating direction of the rotary scraping plate, and the side of the tooth-shaped plate away from the central rotating shaft is chamfered and forms a scraping end.

[0012] Further, the dust collecting unit comprises a dust collecting box, a dust collecting pipe and a dust collecting fan, the dust collecting box is arranged at one side of the detection cleaning box and communicates with the inside of the detection cleaning box through the dust collecting pipe, and the dust collecting fan is arranged on the dust collecting pipe to form an air flow from the inside of the detection cleaning box to the dust collecting box.

[0013] Further, the bottom of the material falling groove is arranged to be inclined and has a material falling opening at the lowest position, and the communication position of the dust collecting pipe with the detection cleaning box is below the material falling opening.

[0014] Further, the self-cleaning device further comprises a mounting frame and a damping assembly, the mounting frame is fixedly arranged between the upper and lower belts of the belt conveyor, at least one set of the damage detection device and the self-cleaning device are arranged on the mounting frame, and any one detection cleaning box is arranged on the mounting frame through the damping assembly.

[0015] According to another aspect of the present application, a self-cleaning method is provided, the self-cleaning method is applied to the above belt conveyor system, the belt conveyor system further comprises a control unit, the control unit is electrically connected with the damage detection device, the scraper dust removal unit, the air curtain dust removal unit, the rotary cleaning unit and the dust collecting unit, and the self-cleaning method comprises:

[0016] S1: when the damage detection device detects a decrease in the clarity, the control unit controls the self-cleaning device to start;

[0017] S2: the scraper dust removal unit is controlled to operate and the sundries on the top of the detection cleaning box are swept into the inside of the detection cleaning box through the scraper;

[0018] S3: the rotary cleaning unit is controlled to operate to scrape and clean the outer periphery of the damage detection device;

[0019] S4: the air curtain dust removal unit is controlled to operate to form an air curtain for dust removal and dust blocking around the damage detection device;

[0020] S5: the dust collecting unit is controlled to operate to collect and discharge the sundries in the detection cleaning box;

[0021] wherein the sequence of S2, S3 and S4 can be adjusted, and / or at least one of S2, S3 and S4 is performed simultaneously with S5.

[0022] The technical scheme of the present application provides a belt conveyor system, which comprises a belt conveyor and a damage detection device arranged between upper and lower belts of the belt conveyor, and further comprises a self-cleaning device arranged corresponding to the damage detection device, wherein the self-cleaning device comprises a detection cleaning box, a scraper dust removal unit, an air curtain dust removal unit, a rotary cleaning unit and a dust collection unit, the damage detection device is arranged in the detection cleaning box, and the top of the detection cleaning box is provided with a material falling groove; the scraper dust removal unit is arranged on the detection cleaning box and comprises a scraper member rotatably arranged on the top of the detection cleaning box, which is used for sweeping sundries on the top of the detection cleaning box into the detection cleaning box from the material falling groove; the air curtain dust removal unit and the rotary cleaning unit are both arranged inside the detection cleaning box, the air curtain dust removal unit is provided with a plurality of air outlets, the plurality of air outlets surround to form an air curtain for dust removal and dust suppression, and the rotary cleaning unit is used for rotating and cleaning the surface of the damage detection device; and the dust collection unit is arranged on one side of the detection cleaning box and communicates with the inside of the detection cleaning box, and is used for collecting and discharging sundries in the detection cleaning box.

[0023] By using the self-cleaning device, the cleaning of the damage detection device is realized, and the detection accuracy and clarity of the damage detection device are ensured. Specifically, the detection cleaning box is used to protect the damage detection device, and the setting and installation of multiple cleaning components are facilitated, the top of the detection cleaning box can be swept by the scraper dust removal unit to avoid the accumulation of coal dust and snow on the top, the air curtain dust removal unit is used to form an air curtain around the damage detection device in the detection cleaning box to prevent dust from falling on the damage detection device and to perform dust removal operation on the damage detection device, the scraper member of the rotary cleaning unit is used to clean the sticky contaminants and large block contaminants around the damage detection device, and the dust collection unit is used to collect and discharge the dust, snow and other contaminants swept into the detection cleaning box by the scraper dust removal unit and the dust and turbid gas in the detection cleaning box. In this way, the cleaning efficiency and effect of the damage detection device of the belt conveyor system are greatly improved, the false reporting of belt tearing is reduced, and the economic benefit of the coal mine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings accompanying the specification of this application form a part hereof, serve to provide further understanding of the present application, and together with the description of the present application, explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 Part of the structure of the belt conveyor system provided by the embodiment of the present application is shown;

[0026] Figure 2 The structure of the self-cleaning device of Figure 1 is shown;

[0027] Figure 3 The internal structure of the self-cleaning device is shown. Figure 2 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown.

[0028] Figure 4 The internal structure of the self-cleaning device is shown. Figure 3 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown.

[0029] Figure 5 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown. Figure 4 The structure diagram of the transmission assembly and the scraper in the self-cleaning device is shown.

[0030] Figure 6 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown. Figure 4 The structure diagram of the transmission assembly and the scraper in the self-cleaning device is shown.

[0031] Figure 7 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown. Figure 2 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown.

[0032] Figure 8 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown. Figure 7 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown.

[0033] Figure 9 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown. Figure 7 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown.

[0034] Figure 10 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown. Figure 7 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown.

[0035] Figure 11 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown. Figure 10 The structure diagram of the dust collection pipe, dust collection fan and material falling chute in the self-cleaning device is shown.

[0036] The above drawings include the following reference signs:

[0037] 1, self-cleaning device; 2, control unit; 3, belt conveyor; 4, damage detection device; 401, tear detection roller;

[0038] 10, detection cleaning box; 101, material falling chute; 1011, material falling port; 11, fence;

[0039] 20, scraper dust removal unit; 21, protective shell; 211, gear box; 212, motor box; 22, driving piece; 23, transmission assembly; 231, transmission gear; 232, gear shaft; 24, scraper;

[0040] 30, air curtain dust removal unit; 31, air compressor; 32, air duct; 33, air curtain assembly; 331, air pipe; 332, end cover; 333, air nozzle;

[0041] 40. Rotary cleaning unit; 41. Drive assembly; 411. Motor base; 412. Drive motor; 413. Coupling; 42. Support frame assembly; 421. First support frame assembly; 422. Second support frame assembly; 43. Rotary scraper; 431. Central shaft; 432. Cylindrical scraper; 44. Belt drive structure;

[0042] 50. Dust collection unit; 51. Dust collection box; 52. Dust collection pipe; 53. Dust collection fan;

[0043] 60. Mounting bracket;

[0044] 70. Vibration damping components;

[0045] 81. First bearing housing; 82. Second bearing housing. Detailed Implementation

[0046] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0047] like Figures 1 to 11 As shown, an embodiment of the present invention provides a belt conveyor system, which includes a belt conveyor 3 and a damage detection device 4 disposed between the upper and lower belts of the belt conveyor 3. The belt conveyor system also includes a self-cleaning device 1 disposed corresponding to the damage detection device 4. The self-cleaning device 1 includes a detection cleaning box 10, a scraper dust removal unit 20, an air curtain dust removal unit 30, a rotary cleaning unit 40, and a dust collection unit 50. The damage detection device 4 is disposed inside the detection cleaning box 10, and the top of the detection cleaning box 10 has a material drop chute 101. The scraper dust removal unit 20 is disposed on the detection cleaning box 10 and includes a rotatable mounting device. A scraper 24 is placed on top of the inspection and cleaning box 10. The scraper 24 is used to sweep the debris on the top of the inspection and cleaning box 10 from the discharge chute 101 into the inspection and cleaning box 10. The air curtain dust removal unit 30 and the rotary cleaning unit 40 are both located inside the inspection and cleaning box 10. The air curtain dust removal unit 30 has multiple exhaust ports, which surround to form an air curtain for dust removal and suppression. The rotary cleaning unit 40 is used to rotate and clean the surface of the damage detection device 4. The dust collection unit 50 is located on one side of the inspection and cleaning box 10 and communicates with the interior of the inspection and cleaning box 10. The dust collection unit 50 is used to collect and discharge the debris inside the inspection and cleaning box 10.

[0048] In the embodiment, the self-cleaning device 1 is used to clean the damage detection device 4, so as to ensure the detection accuracy and clarity of the damage detection device 4. Specifically, the detection cleaning box 10 is used to protect the damage detection device 4, and the detection cleaning box 10 is convenient for setting and installing multiple cleaning components. The scraper dust removal unit 20 is used to clean the top of the detection cleaning box 10, so as to avoid the accumulation of coal dust and snow on the top. The air curtain dust removal unit is used to form an air curtain around the damage detection device 4 in the detection cleaning box 10, so as to prevent dust from falling on the damage detection device 4 and to perform dust removal on the damage detection device 4. The scraper 24 of the rotating cleaning unit 40 is used to clean the sticky contaminants and large contaminants around the damage detection device 4. The dust collection unit 50 is used to collect and discharge the contaminants such as dust and snow swept into the detection cleaning box 10 by the scraper dust removal unit 20 and the contaminants such as dust and turbid gas in the detection cleaning box 10. In this way, the cleaning efficiency and effect of the damage detection device 4 of the belt conveyor 3 system are greatly improved, so as to reduce the false reporting of belt tearing and improve the economic benefits of the coal mine.

[0049] As shown in Figures 2 to 6 the scraper dust removal unit 20 includes a protective shell 21, a driving member 22 and a transmission assembly 23 arranged in the protective shell 21. The protective shell 21 is fixedly arranged on one side of the detection cleaning box 10, and the material falling groove 101 is arranged on the top of the detection cleaning box 10 near the protective shell 21. The transmission assembly 23 includes a transmission gear 231 and a gear shaft 232 fixedly connected with the transmission gear 231. One end of the gear shaft 232 protrudes from the top of the protective shell 21 and is connected with one end of the scraper 24. The scraper 24 is at least partially attached to the top of the detection cleaning box 10. The transmission assembly 23 and the scraper 24 are at least symmetrically arranged in two groups. The transmission gears 231 of the at least two groups of transmission assemblies 23 are meshed with each other. The driving member 22 is drivingly connected with one of the transmission gears 231.

[0050] In the embodiment, the protective shell 21 includes a gear box 211 and a motor box 212. The motor box 212 is arranged below the gear box 211. The driving member 22 is a motor arranged in the motor box 212. The transmission assembly 23 is arranged in the gear box 211. The protective shell 21 is used to protect the driving member 22 and the transmission assembly 23, so as to ensure the reliability and stability of the driving. Further, in the embodiment, the transmission assembly 23 and the scraper 24 are symmetrically arranged in two groups. The two scrapers 24 respectively scrape and clean the two half regions of the top of the detection cleaning box 10. One driving member 22 is used to synchronously and reversely drive the two transmission assemblies 23, so as to reversely rotate the two scrapers 24, and clean the top of the detection cleaning box 10 on the side of the scraper 24, so as to improve the cleaning effect and efficiency.

[0051] Specifically, the scraper 24 is an arc-shaped strip and is chamfered on one side facing the top of the detection cleaning box 10. The top of the detection cleaning box 10 is provided with a plurality of surrounding plates 11, which are arranged on the side where the protective shell 21 and the scraper 24 are located.

[0052] In this way, the cleaning effect of the scraper 24 on the detection cleaning box 10 is improved. On the other hand, the plurality of surrounding plates 11 help to stop the dust, snow and other debris falling on the top of the detection cleaning box 10 from being scraped onto the belt conveyor 3 from other sides during the cleaning process of the scraper 24.

[0053] As shown in Figure 4 , Figure 7 , Figure 10 and Figure 11 , the air curtain dust removal unit 30 includes an air compressor 31, an air duct 32 and a plurality of air curtain assemblies 33 connected in sequence. The plurality of air curtain assemblies 33 are distributed on at least two sides and the bottom of the damage detection device 4. The air curtain assembly 33 includes an air pipe 331, an end cover 332 and a plurality of air nozzles 333 facing the damage detection device 4. One end of the air pipe 331 is connected to the air duct 32, and the end cover 332 is arranged at the other end of the air pipe 331. The plurality of air nozzles 333 are arranged in the extension direction of the air pipe 331 and form a plurality of air outlets. The extension directions of the plurality of air curtain assemblies 33 are parallel to the axial direction of the damage detection device 4.

[0054] In the present embodiment, the damage detection device 4 includes a tear detection roller 401 and a detection assembly arranged in the tear detection roller 401. The plurality of air nozzles 333 of the plurality of air curtain assemblies 33 are arranged towards the tear detection roller 401. The air curtain dust removal unit 30 forms an air flow from the air duct 32 to the plurality of air curtain assemblies 33 through the air compressor 31. The air flow passes through the air pipe 331 of the air curtain assembly 33 and is sprayed out from the plurality of air nozzles 333. The air flows sprayed out from the plurality of air nozzles 333 of the plurality of air curtain assemblies 33 together form an air curtain. In the present embodiment, the air curtain assembly 33 is four, two of which are arranged on both sides of the tear detection roller 401 of the damage detection device 4, and the other two are arranged side by side at the bottom of the tear detection roller 401. It can be understood that the end cover 332 is used to stop the air flow in the air pipe 331, to ensure the air exhaust effect of the air nozzle 333, and to avoid most of the air flow being exhausted from the end of the air pipe 331 instead of from the air nozzle 333, which affects the formation of the air curtain.

[0055] It can be understood that the tear detection roller 401 has a transparent window for avoiding the camera of the detection assembly. The detection cleaning box 10 is the same, to ensure the detection effect of the damage detection device 4 on the belt conveyor 3.

[0056] As shown in Figures 7 to 9As shown, the rotating cleaning unit 40 comprises a driving assembly 41, a support frame set 42, a rotating scraper 43, and a belt drive structure 44 having a large pulley side and a small pulley side. The damage detection device 4 and the rotating scraper 43 are both arranged side by side on the support frame set 42 through bearing seats and rotate. The driving assembly 41 is drivingly connected with the damage detection device 4 through the large pulley side of the belt drive structure 44, and the driving assembly 41 is rotatably connected with the rotating scraper 43 through the small pulley side of the belt drive structure 44, so as to drive the damage detection device 4 and the rotating scraper 43 to rotate synchronously at different speeds. The rotating scraper 43 has a plurality of scraping ends distributed along the circumference thereof. Any one of the scraping ends is tangentially separable with the outer circumference of the damage detection device 4, so as to rotate and scrape the surface of the damage detection device 4.

[0057] In the embodiment, the support frame set 42 comprises a first support frame set 421 for supporting the damage detection device 4 and a second support frame set 422 for supporting the rotating scraper 43. The damage detection device 4 is rotatably arranged on the first support frame set 421 through a first bearing seat 81, and the rotating scraper 43 is rotatably arranged on the second support frame set 422 through a second bearing seat 82. When the driving assembly 41 is started, it directly drives the damage detection device 4 to rotate and drives the rotating scraper 43 to rotate synchronously through the belt drive structure 44. Since the damage detection device 4 and the rotating scraper 43 are located at the large pulley side and the small pulley side respectively, the rotating speed of the damage detection device 4 is slower than that of the rotating scraper 43, thereby realizing synchronous differential driving of the damage detection device 4 and the rotating scraper 43, so that the scraping ends can scrape and clean different positions of the outer circumference of the tear detection cylinder 401 while rotating. In this way, the surface of the tear detection cylinder 401 can be scraped and cleaned more comprehensively, and since it is rotated to scrape and clean, the cleaning effect is also better.

[0058] It should be noted that the two ends of the scraping end in the axial direction of the damage detection device 4 extend to the two ends in the axial direction of the damage detection device 4 respectively, so as to ensure the cleaning effect of the outer circumference of the tear detection cylinder 401.

[0059] Specifically, as Figure 9As shown, the driving assembly 41 comprises a motor base 411, a driving motor 412 arranged on the motor base 411, and a coupling 413, the motor base 411 is arranged on one side of the detection cleaning box 10 in the axial direction and is connected with the rotating shaft of the detection cleaning box 10 through the coupling 413; the rotating scraper 43 comprises a central rotating shaft 431 and a cylindrical scraper 432 sleeved on the outer periphery of the central rotating shaft 431, the cylindrical scraper 432 has a plurality of tooth-shaped plates distributed along the circumferential direction and extending along the axial direction, the plurality of tooth-shaped plates are arc-shaped curved along the rotating direction of the rotating scraper 43, and the side of the tooth-shaped plate away from the central rotating shaft 431 is chamfered and forms a scraping end. The two ends of the central rotating shaft 431 are rotatably arranged on the second support frame group 422 through the second bearing seat 82. In this way, the design of the driving assembly 41 and the rotating driving of the damage detection device 4 and the rotating scraper 43 are facilitated. Moreover, through the design of the rotating scraper 43, the cleaning effect on the surface of the tear detection roller 401 is further improved. It can be understood that any one scraping end can also be designed as a flexible brush according to actual conditions, which is not exemplified here.

[0060] As shown in Figure 2 and Figure 3 As shown, the self-cleaning device 1 further comprises a mounting frame 60 and a damping assembly 70, the mounting frame 60 is fixedly arranged between the upper and lower belts of the belt conveyor 3, at least one set of damage detection devices 4 and the self-cleaning device 1 are arranged on the mounting frame 60, and any one detection cleaning box 10 is arranged on the mounting frame 60 through a plurality of damping assemblies 70.

[0061] In this way, the damping assembly 70 is beneficial to provide buffering for the installation of the detection cleaning box 10 and ensure the stability of the installation. In the embodiment, the damping assembly 70 is composed of four springs.

[0062] As shown in Figure 2 and Figure 5 As shown, the dust collecting unit 50 comprises a dust collecting box 51, a dust collecting pipe 52, and a dust collecting fan 53, the dust collecting box 51 is arranged on one side of the detection cleaning box 10 and is communicated with the inside of the detection cleaning box 10 through the dust collecting pipe 52, and the dust collecting fan 53 is arranged on the dust collecting pipe 52 to form an air flow from the inside of the detection cleaning box 10 to the dust collecting box 51. In the embodiment, two sets of damage detection devices 4 and the self-cleaning device 1 are arranged on the mounting frame 60, the dust collecting box 51 is communicated with both detection cleaning boxes 10 through the dust collecting pipe 52 to simultaneously process the sundries in the two detection cleaning boxes 10 and improve the dust collecting and discharging efficiency.

[0063] As shown in Figures 2 to 5As shown, the bottom of the drop chute 101 is inclinedly arranged and has a drop opening 1011 at the lowest position, and the communication position of the dust collecting pipe 52 with the detection cleaning box 10 is located below the drop opening 1011.

[0064] In this way, the dust and the like of the detection cleaning box 10 scraped by the scraper 24 can fall in the drop chute 101, and accumulation is avoided; meanwhile, through the design of the communication position of the dust collecting pipe 52 with the detection cleaning box 10, the dust collecting pipe 52 can quickly suck the dust and the like falling from the drop opening 1011, the pollution discharge effect and efficiency are improved, while the original dust, turbid gas and other pollutants in the detection cleaning box 10 can be concentrated and discharged.

[0065] Another embodiment of the present application provides a self-cleaning method, which is applied to the above-mentioned belt conveyor system, and the belt conveyor system further comprises a control unit 2, which is electrically connected with the damage detection device 4, the scraper dust removal unit 20, the air curtain dust removal unit 30, the rotary cleaning unit 40 and the dust collecting unit 50, and the self-cleaning method comprises the following steps:

[0066] S1: when the detection assembly of the damage detection device 4 detects that the clarity decreases, the control unit 2 controls the self-cleaning device 1 to start;

[0067] S2: the scraper dust removal unit 20 is controlled to operate, and the sundries on the top of the detection cleaning box 10 are swept into the inside of the detection cleaning box 10 by the scraper 24;

[0068] S3: the rotary cleaning unit 40 is controlled to operate, and the outer periphery of the tear detection roller 401 of the damage detection device 4 is scraped and cleaned;

[0069] S4: the air curtain dust removal unit 30 is controlled to operate, and the air curtain for dust removal and dust blocking is formed around the tear detection roller 401 of the damage detection device 4;

[0070] S5: the dust collecting unit 50 is controlled to operate, and the sundries in the detection cleaning box 10 are concentrated and discharged;

[0071] Wherein, the sequence of S2, S3 and S4 can be adjusted, and / or at least one of S2, S3 and S4 is performed simultaneously with S5.

[0072] In this way, the self-cleaning of the damage detection device 4 is realized, and the reliability of the belt conveyor system is ensured.

[0073] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0074] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the various parts shown in the drawings. Techniques, methods, and apparatus known to those of ordinary skill are not discussed in detail because they would be understood that such techniques, methods, and apparatus are considered part of the art. In all examples shown and discussed herein, any specific values are to be interpreted as merely illustrative and not limiting. Thus, other examples of the example embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the several views, and thus, once an item is defined in one figure, it is not necessary to discuss it further in connection with other figures where it is understood that the item will be present.

[0075] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by terms such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "horizontal", and "top", "bottom" are generally based on the orientation or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0076] For purposes of the description hereinafter, spatial or directional terms, for example, "above", "below", "upper", "lower", and the like, can be used, and relate to the device as illustrated in the figures. However, it is to be understood that no absolute or relative orientation of the device is intended or implied, unless specifically described as such. Terms concerning attachments, coupling and the like, such as "connected" and "coupled" and the like, are to be construed in accordance with their normal meanings, that is, as referring to an indirect or direct connection or coupling. Any reference to "comprising" or "containing" is to be construed as meaning "comprising or containing, but not limited to". Any reference to "comprising" or "containing" is to be construed as meaning "comprising or containing, but not limited to".

[0077] In addition, it should be pointed out that the use of the terms "first", "second" and the like, to describe various elements, is merely intended to differentiate the elements from one another, and does not connote any special order or order of precedence, unless otherwise specifically indicated. Thus, the use of the terms "first", "second" and the like, is not intended to limit the scope of the present application, and is not intended to connote any special order or order of precedence.

[0078] The preferred embodiments herein disclosed are not intended to limit or restrict the scope of the application, but merely convey the best mode contemplated by the inventors of carrying out the claimed application. Any modifications, variations or changes within the spirit and scope of the application as disclosed herein will be considered to fall within the scope of the application.

Claims

1. A belt conveyor system comprising a belt conveyor (3) and a damage detection device (4) arranged between the upper and lower belts of the belt conveyor (3), characterized in that, The belt conveyor system further comprises a self-cleaning device (1) corresponding to the damage detection device (4), the self-cleaning device (1) comprises a detection cleaning box (10), a scraper dust removal unit (20), an air curtain dust removal unit (30), a rotary cleaning unit (40) and a dust collection unit (50), the damage detection device (4) is arranged in the detection cleaning box (10), and the top of the detection cleaning box (10) is provided with a material falling groove (101); the scraper dust removal unit (20) is arranged on the detection cleaning box (10) and comprises a scraper (24) rotatably arranged on the top of the detection cleaning box (10), the scraper (24) is used for sweeping sundries on the top of the detection cleaning box (10) from the material falling groove (101) into the detection cleaning box (10); the air curtain dust removal unit (30) and the rotary cleaning unit (40) are arranged inside the detection cleaning box (10), the air curtain dust removal unit (30) is provided with a plurality of exhaust ports, a plurality of the exhaust ports surround the air curtain for dust removal and dust suppression, and the rotary cleaning unit (40) is used for rotating and cleaning the surface of the damage detection device (4); the dust collection unit (50) is arranged on one side of the detection cleaning box (10) and communicates with the inside of the detection cleaning box (10), and the dust collection unit (50) is used for collecting and discharging the sundries in the detection cleaning box (10); The scraper dust removal unit (20) comprises a protective shell (21) and a driving member (22) and a transmission assembly (23) arranged in the protective shell (21), the protective shell (21) is fixedly arranged on one side of the detection cleaning box (10), the material falling groove (101) is located on the top of the detection cleaning box (10) and is close to one side of the protective shell (21), the transmission assembly (23) comprises a transmission gear (231) and a gear shaft (232) fixedly connected with the transmission gear (231), one end of the gear shaft (232) protrudes from the top of the protective shell (21) and is connected with one end of the scraper (24), the scraper (24) is at least partially attached to the top of the detection cleaning box (10), the transmission assembly (23) and the scraper (24) are at least symmetrically arranged in two groups, the transmission gears (231) of the at least two groups of transmission assemblies (23) are meshed with each other, and the driving member (22) is drivingly connected with one of the transmission gears (231). The rotating cleaning unit (40) comprises a driving assembly (41), a support frame group (42), a rotating scraper (43) and a belt transmission structure (44) having a large pulley side and a small pulley side, the damage detection device (4) and the rotating scraper (43) are both arranged on the support frame group (42) in parallel through bearing seats, the driving assembly (41) is drivingly connected with the damage detection device (4) through the large pulley side of the belt transmission structure (44), the driving assembly (41) is rotatably connected with the rotating scraper (43) through the small pulley side of the belt transmission structure (44) to drive the damage detection device (4) and the rotating scraper (43) to rotate synchronously at different rotating speeds, the rotating scraper (43) has a plurality of scraping ends which are distributed along the circumference thereof, and any one of the scraping ends is tangentially separable with the outer circumference of the damage detection device (4) to scrape the surface of the damage detection device (4) in rotation.

2. The belt conveyor system of claim 1, wherein, The scraper member (24) is an arc-shaped strip member and is chamfered on one side facing the top of the detection and cleaning box (10), and the top of the detection and cleaning box (10) is provided with a plurality of surrounding plates (11), and the plurality of surrounding plates (11) are arranged on the side away from the protective shell (21) and the scraper member (24).

3. The belt conveyor system of claim 1, wherein, The air curtain dust removal unit (30) comprises an air compressor (31), an air duct (32) and a plurality of air curtain assemblies (33) connected in sequence, the plurality of air curtain assemblies (33) are arranged on at least two sides and the bottom of the damage detection device (4), the air curtain assembly (33) comprises an air pipe (331), an end cover (332) and a plurality of air nozzles (333) facing the damage detection device (4), one end of the air pipe (331) is connected with the air duct (32), the end cover (332) is arranged at the other end of the air pipe (331), and the plurality of air nozzles (333) are arranged in the extension direction of the air pipe (331) in a spaced manner and form a plurality of air outlets, and the extension directions of the plurality of air curtain assemblies (33) are parallel to the axial direction of the damage detection device (4).

4. The belt conveyor system of claim 1, wherein The driving assembly (41) comprises a motor base (411), a driving motor (412) arranged on the motor base (411) and a shaft coupling (413), the motor base (411) is arranged on one side in the axial direction of the detection and cleaning box (10) and is connected with the rotating shaft of the detection and cleaning box (10) through the shaft coupling (413); The rotating scraper (43) comprises a central rotating shaft (431) and a cylindrical scraper (432) sleeved on the outer circumference of the central rotating shaft (431), the cylindrical scraper (432) has a plurality of tooth-shaped plates which are distributed along the circumferential direction thereof and extend along the axial direction thereof, the plurality of tooth-shaped plates are all arc-shaped curved along the rotating direction of the rotating scraper (43), and the side of the tooth-shaped plate away from the central rotating shaft (431) is chamfered to form the scraping end.

5. The belt conveyor system of claim 1, wherein, The dust collecting unit (50) comprises a dust collecting box (51), a dust collecting pipe (52) and a dust collecting fan (53), the dust collecting box (51) is arranged at one side of the detection cleaning box (10) and communicates with the inside of the detection cleaning box (10) through the dust collecting pipe (52), and the dust collecting fan (53) is arranged on the dust collecting pipe (52) to form an air flow from the inside of the detection cleaning box (10) to the dust collecting box (51).

6. The belt conveyor system of claim 5, wherein, The bottom of the material falling groove (101) is arranged in an inclined manner and has a material falling opening (1011) at the lowest position, and the communication position of the dust collecting pipe (52) and the detection cleaning box (10) is below the material falling opening (1011).

7. The belt conveyor system of claim 1, wherein, The self-cleaning device (1) further comprises a mounting rack (60) and a damping assembly (70), the mounting rack (60) is fixedly arranged between the upper and lower belts of the belt conveyor (3), at least one set of the damage detection device (4) and the self-cleaning device (1) are arranged on the mounting rack (60), and any one of the detection cleaning boxes (10) is arranged on the mounting rack (60) through a plurality of damping assemblies (70).

8. A self-cleaning method characterized by, The self-cleaning method is applied to the belt conveyor system in any one of claims 1 to 7, the belt conveyor system further comprises a control unit (2), the control unit (2) is electrically connected with the damage detection device (4), the scraper dust removal unit (20), the air curtain dust removal unit (30), the rotary cleaning unit (40) and the dust collecting unit (50), and the self-cleaning method comprises: S1: when the damage detection device (4) detects a decrease in clarity, the control unit (2) controls the self-cleaning device (1) to start; S2: control the scraper dust removal unit (20) to run and sweep the sundries on the top of the detection cleaning box (10) into the inside of the detection cleaning box (10) from the material falling groove (101) through the scraper (24); S3: control the rotary cleaning unit (40) to run to scrape and clean the outer periphery of the damage detection device (4); S4: control the air curtain dust removal unit (30) to run to form a dust removal and dust blocking air curtain around the damage detection device (4); S5: control the dust collecting unit (50) to run to collect and discharge the sundries in the detection cleaning box (10); wherein the sequence of S2, S3 and S4 can be adjusted, and / or at least one of S2, S3 and S4 is performed simultaneously with S5.

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