Slag transportation system based on multi-stage screening

Abstract

The invention provides a slag conveying system based on multi-stage screening, which comprises a first belt conveying device, a second belt conveying device, a third belt conveying device and a third belt conveying device, the first screening device is arranged at the opening of the tunnel, and the first screening device is used for screening the slag according to a first preset particle size; the second belt conveying device is arranged outside the tunnel, and the first belt conveying device, the first screening device and the second belt conveying device are sequentially connected; and the second screening device is arranged at the discharging end of the second belt conveying device, and the second screening device is used for screening the slag materials according to the second preset particle size. According to the slag transportation system based on multi-stage screening, multi-stage screening of the slag in the slag transportation system is achieved, the treatment cost of the slag can be reduced, abrasion of equipment in the slag transportation system can be reduced, and the fault rate of the slag transportation system can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of tunnel slag transportation, and in particular to a slag transportation system based on multi-stage screening. Background Art

[0002] In the field of shield construction, the transportation and treatment of slag is a crucial link. At present, shield slag is usually transported directly from the shield equipment to the slag pool. The lack of effective screening function makes the composition of the slag complex. In the subsequent processing, additional crushing and sorting processes are required, which leads to an increase in the cost of slag treatment. In addition, during the operation of the conveying equipment, it is very easy to be affected by large-size slag, resulting in increased wear and tear and an increase in the failure rate, which in turn affects the construction efficiency and prolongs the construction period. Summary of the invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, an object of the present disclosure is to provide a slag transportation system based on multi-stage screening.

[0005] To achieve the above-mentioned purpose, the present disclosure provides a slag transportation system based on multi-stage screening, comprising: a first belt conveyor device, the first belt conveyor device is arranged in the hole of the tunnel, and the feeding end of the first belt conveyor device is connected to the discharging end of the shield equipment; a first screening device, the first screening device is arranged at the hole of the tunnel, and the first screening device is used to screen the slag according to a first preset particle size; a second belt conveyor device, the second belt conveyor device is arranged outside the hole of the tunnel, and the first belt conveyor device, the first screening device and the second belt conveyor device are connected in sequence; a second screening device, the second screening device is arranged at the discharging end of the second belt conveyor device, and the second screening device is used to screen the slag according to a second preset particle size, and the second preset particle size is smaller than the first preset particle size.

[0006] Optionally, the first screening device includes: a transfer machine, which is arranged at the entrance of the tunnel, and the feed end of the transfer machine is located between the first discharge end and the second discharge end and close to the second discharge end, the feed end of the transfer machine is connected to the discharge end of the first belt conveyor, and the first discharge end of the transfer machine is connected to the feed end of the second belt conveyor; a visual detection module, the detection end of the visual detection module is arranged on the feed end of the transfer machine, and the visual detection module is used to detect the slag particle size at the feed end of the transfer machine; a control module, the control module is used to control the transfer machine to transport materials from the feed end to the first discharge end when the slag particle size at the feed end of the transfer machine is not greater than the first preset particle size, and to control the transfer machine to transport materials from the feed end to the second discharge end when the slag particle size at the feed end of the transfer machine is greater than the first preset particle size.

[0007] Optionally, the transfer machine includes: a transfer frame, which is arranged at the entrance of the tunnel; a driving roller, which is rotatably arranged at one end of the transfer frame; a transfer drive mechanism, which is arranged on the transfer frame and is transmission-connected to the driving roller, and the input end of the transfer drive mechanism is connected to the output end of the control module; a reversing roller, which is rotatably arranged at one end of the transfer frame away from the driving roller; a transfer belt, which is wound around the driving roller and the reversing roller, and the transfer belt is located at one end of the driving roller as the first discharging end of the transfer machine, and the transfer belt is located at one end of the reversing roller as the second discharging end of the transfer machine, and the transfer belt is located between the driving roller and the reversing roller and close to the reversing roller as the feeding end of the transfer machine.

[0008] Optionally, the transfer machine also includes: a first sealed unloading hopper, which is arranged at the end of the transfer frame away from the reversing roller, and the driving roller is located in the first sealed unloading hopper, and the first sealed unloading hopper serves as the first discharging end of the transfer machine; a second sealed unloading hopper, which is arranged at the end of the transfer frame away from the driving roller, and the reversing roller is located in the second sealed unloading hopper, and the second sealed unloading hopper serves as the second discharging end of the transfer machine; a sealed receiving hopper, which is arranged on the transfer machine and is located between the first sealed unloading hopper and the second sealed unloading hopper, and the sealed receiving hopper serves as the feeding end of the transfer machine.

[0009] Optionally, the transfer machine further includes: a plurality of buffer rollers, the buffer rollers are rotatably disposed on the transfer frame, and the buffer rollers are located below the discharge end of the sealed material receiving hopper, and the transfer belt passes around the buffer rollers.

[0010] Optionally, the system also includes: a third screening device, which is arranged at the discharge end of the shield equipment, and the third screening device is used to screen the slag according to the first preset particle size, the first discharge end of the third screening device outputs slag with a particle size not greater than the first preset particle size and is connected to the feed end of the first belt conveyor, and the second discharge end of the third screening device outputs slag with a particle size greater than the first preset particle size.

[0011] Optionally, the system also includes: an electric locomotive system, which is arranged inside and at the entrance of the tunnel, and the first feed end of the electric locomotive system is connected to the second discharge end of the transfer machine, and the second feed end of the electric locomotive system is connected to the second discharge end of the third screening device.

[0012] Optionally, the third screening device includes: a chute, which is arranged at the discharge end of the shield equipment, and the first discharge end of the chute is located above the feed end of the first belt conveyor, and the second discharge end of the chute is located above the second feed end of the electric locomotive system; a screen, which is arranged in the chute and is used to screen the slag according to the first preset particle size, the under-screen channel of the screen is connected to the first discharge end of the chute, and the above-screen channel of the screen is connected to the second discharge end of the chute.

[0013] Optionally, the screen includes: a screen frame, which is arranged in the chute; a plurality of first connecting rods, which are movably arranged on the screen frame and are arranged along the width direction of the screen; a plurality of second connecting rods, which are movably arranged on the screen frame and are arranged along the width direction of the screen, wherein the plurality of first connecting rods and the plurality of second connecting rods are spaced apart along the length direction of the screen; a plurality of third connecting rods, wherein a plurality of the third connecting rods are hinged between adjacent first connecting rods and second connecting rods, and the plurality of the third connecting rods are spaced apart along the width direction of the screen; a screening drive mechanism, which is transmission-connected to the plurality of the first connecting rods, and / or the screening drive mechanism is transmission-connected to the plurality of the second connecting rods; wherein the input end of the screening drive mechanism is connected to the output end of the control module, and the control module is also used to control the screening drive mechanism to drive the first connecting rods and the second connecting rods to move so as to adjust the spacing between adjacent first connecting rods and second connecting rods.

[0014] Optionally, the second screening device includes: a third sealed discharge hopper, which is arranged at the discharge end of the second belt conveyor; a partition, which is arranged in the third sealed discharge hopper, and the side of the partition close to the discharge end of the second belt conveyor forms a first discharge channel, and the side of the partition away from the discharge end of the second belt conveyor forms a second discharge channel; wherein the second belt conveyor is used to transport slag according to a preset speed, so that slag with a particle size smaller than the second preset particle size enters the first discharge channel, and slag with a particle size not less than the second preset particle size enters the second discharge channel.

[0015] The technical solution provided by the present disclosure may have the following beneficial effects:

[0016] Through the cooperation of the first screening device and the second screening device, multi-stage screening of slag in the slag transportation system is realized, which not only simplifies the composition of the slag, thereby avoiding crushing, sorting and other processes in the subsequent processing, and effectively reduces the processing cost of the slag, but also can realize the separate transportation and processing of large-size slag and small-size slag, thereby reducing the wear of equipment in the slag transportation system, reducing the failure rate of the slag transportation system, thereby avoiding multiple shutdowns of shield equipment, and effectively improving the construction efficiency of the tunnel and shortening the construction period of the tunnel.

[0017] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 is a structural schematic diagram of a slag transportation system based on multi-stage screening proposed in an embodiment of the present disclosure;

[0020] Figure 2 It is a structural schematic diagram of a transfer machine in a slag material transportation system based on multi-stage screening proposed in an embodiment of the present disclosure;

[0021] Figure 3 is a schematic structural diagram of a third screening device in a slag material transportation system based on multi-stage screening proposed in an embodiment of the present disclosure;

[0022] Figure 4 is a side view schematic diagram of a screen in a slag transport system based on multi-stage screening proposed in an embodiment of the present disclosure;

[0023] Figure 5is a schematic top view of a screen in a slag transport system based on multi-stage screening proposed in an embodiment of the present disclosure;

[0024] Figure 6 is a schematic top view of a second screening device in a slag material transportation system based on multi-stage screening according to an embodiment of the present disclosure;

[0025] As shown in the figure: 1. The first belt conveyor device, 2. The second belt conveyor device;

[0026] 3. Transfer machine, 31. Transfer frame, 32. Driving roller, 33. Reversing roller, 34. Transfer belt, 35. First sealed discharge hopper, 36. Second sealed discharge hopper, 37. Sealed receiving hopper;

[0027] 4. a third screening device, 41. a chute, 42. a screen, 421. a screen frame, 422. a first connecting rod, 423. a second connecting rod, 424. a third connecting rod;

[0028] 5. Electric locomotive system;

[0029] 6. Second screening device, 61. Third sealed discharge hopper, 62. Partition plate. DETAILED DESCRIPTION

[0030] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0031] like Figure 1 As shown, the embodiment of the present disclosure proposes a slag transportation system based on multi-stage screening, including: a first belt conveyor 1, a first screening device, a second belt conveyor 2 and a second screening device 6, the first belt conveyor 1 is arranged in the tunnel, and the feeding end of the first belt conveyor 1 is connected to the discharging end of the shield equipment, the first screening device is arranged at the entrance of the tunnel, and the first screening device is used to screen the slag according to a first preset particle size, the second belt conveyor 2 is arranged outside the tunnel, and the first belt conveyor 1, the first screening device and the second belt conveyor 2 are connected in sequence, the second screening device 6 is arranged at the discharging end of the second belt conveyor 2, and the second screening device 6 is used to screen the slag according to a second preset particle size, and the second preset particle size is smaller than the first preset particle size.

[0032] It can be understood that since the first belt conveyor 1 is arranged inside the tunnel, the first screening device is arranged at the entrance of the tunnel, and the second belt conveyor 2 is arranged outside the tunnel, the first belt conveyor 1, the first screening device and the second belt conveyor 2 are connected in sequence, so that the first belt conveyor 1 can transfer the slag discharged by the shield equipment from the inside of the tunnel to the first screening device at the entrance of the tunnel. At the same time, the second belt conveyor 2 can transfer the slag transferred by the first screening device from the entrance of the tunnel to the outside of the tunnel, thereby meeting the slag transportation requirements in tunnel construction.

[0033] Among them, since the first screening device is arranged between the first belt conveyor 1 and the second belt conveyor 2, and the first screening device is used to screen the slag according to the first preset particle size, the slag at the discharge end of the first belt conveyor 1 can be screened by the first screening device. At the same time, since the second screening device 6 is arranged at the discharge end of the second belt conveyor 2, and the second screening device 6 is used to screen the slag according to the second preset particle size, the slag at the discharge end of the second belt conveyor 2 can be screened by the second screening device 6.

[0034] Therefore, through the cooperation of the first screening device and the second screening device 6, multi-stage screening of slag in the slag transportation system is realized, which not only simplifies the composition of the slag, thereby avoiding crushing, sorting and other processes in the subsequent processing process, and effectively reduces the processing cost of the slag, but also can realize the separate transportation and processing of large-size slag and small-size slag, thereby reducing the wear of equipment in the slag transportation system, reducing the failure rate of the slag transportation system, thereby avoiding multiple shutdowns of shield equipment, and then effectively improving the construction efficiency of the tunnel and shortening the construction period of the tunnel.

[0035] It should be noted that the first belt conveyor 1 is used to be arranged in the tunnel and realize the transfer of slag. The specific type of the first belt conveyor 1 can be set according to actual needs and is not limited. The first belt conveyor 1 is arranged along the direction from the tunnel entrance to the tunnel, and the feeding end of the first belt conveyor 1 is continuously extended as the shield equipment advances.

[0036] The second belt conveyor 2 is used to be arranged outside the tunnel and realize the transfer of slag. The specific type of the second belt conveyor 2 can be set according to actual needs and is not limited. The second belt conveyor 2 is arranged along the tunnel opening toward the outside of the tunnel, and according to the position between the tunnel opening and the outside of the tunnel, the second belt conveyor 2 has a vertical section arranged inside the tunnel and a horizontal section outside the tunnel.

[0037] The first screening device is used to screen the slag at the discharge end of the first belt conveyor 1 according to a first preset particle size, and the second screening device 6 is used to screen the slag at the discharge end of the second belt conveyor 2 according to a second preset particle size. The specific types of the first screening device and the second screening device 6 can be set according to actual needs and are not limited to this.

[0038] The first preset particle size can be set according to actual needs without limitation. For example, the first preset particle size can be 250 mm, that is, the first screening device screens out large-size slag larger than 250 mm, so that the slag particle size in the second belt conveyor 2 is less than 250 mm.

[0039] The second preset particle size can be set according to actual needs, and there is no limitation on this. For example, the first preset particle size can be 100 mm, that is, the second screening device 6 screens out slag with a particle size range of 100 mm-250 mm, and slag with a particle size less than 100 mm.

[0040] like Figure 2 As shown, in some embodiments, the first screening device includes: a transfer machine 3, a visual detection module (not shown in the figure) and a control module (not shown in the figure), the transfer machine 3 is arranged at the entrance of the tunnel, and the feed end of the transfer machine 3 is located between the first discharge end and the second discharge end and close to the second discharge end, the feed end of the transfer machine 3 is connected to the discharge end of the first belt conveyor 1, the first discharge end of the transfer machine 3 is connected to the feed end of the second belt conveyor 2, the detection end of the visual detection module is arranged on the feed end of the transfer machine 3, and the visual detection module is used to detect the slag particle size at the feed end of the transfer machine 3, the control module is used to control the transfer machine 3 to transport along the direction from the feed end to the first discharge end when the slag particle size at the feed end of the transfer machine 3 is not greater than the first preset particle size, and when the slag particle size at the feed end of the transfer machine 3 is greater than the first preset particle size, control the transfer machine 3 to transport along the direction from the feed end to the second discharge end.

[0041] It can be understood that since the transfer machine 3 is arranged at the entrance of the tunnel and the feed end of the transfer machine 3 is located between the first discharge end and the second discharge end and close to the second discharge end, the transfer machine 3 can realize the slag transfer in the tunnel entrance by utilizing the feeding action from the feed end to the first discharge end or from the feed end to the second discharge end, and the control module controls the feeding direction of the transfer machine 3 according to the slag particle size detected by the visual detection module, so that the slag with a particle size not greater than the first preset particle size is discharged from the first discharge end of the transfer machine 3 to the second belt conveyor 2, and the slag with a particle size greater than the first preset particle size is discharged from the second discharge end of the transfer machine 3, thereby realizing the screening of the slag.

[0042] Among them, the screening of slag by the transfer machine 3 can realize the separate transportation and processing of large-size slag and small-size slag, thereby effectively reducing the large-size slag in the slag transportation system, and further reducing the impact of the large-size slag on the equipment in the slag transportation system, thereby reducing the wear of equipment in the slag transportation system, reducing the failure rate of the slag transportation system, thereby avoiding multiple shutdowns of the shield equipment, and effectively improving the construction efficiency of the tunnel and shortening the construction period of the tunnel.

[0043] It should be noted that the transfer machine 3 is used for the transfer of slag at the tunnel entrance. The transfer machine 3 has two operating modes. In the first mode, the transfer machine 3 transports materials in the direction from the feed end to the first discharge end. In the second mode, the transfer machine 3 transports materials in the direction from the feed end to the second discharge end. The specific type of the transfer machine 3 can be set according to actual needs and is not limited to this.

[0044] The visual detection module is used to visually identify the particle size of the slag at the feeding end of the transfer machine 3. Specifically, the visual detection module can use image recognition technology or other visual detection means to monitor the slag in real time. The specific type of the visual detection module can be set according to actual needs and is not limited to this. For example, the visual detection module can use a high-definition camera to collect images of the slag, and then use an image processing algorithm to analyze the size information of the slag in the image.

[0045] The control module is used to control the feeding direction of the transfer machine 3 according to the slag particle size detected by the visual detection module. Specifically, the control module controls the feeding direction of the transfer machine 3, screens out large-size slag and small-size slag, and transports and processes the large-size slag and small-size slag respectively according to their characteristics, thereby reducing the impact of large-size slag on the slag transportation system. The specific type of the control module can be set according to actual needs and is not limited to this.

[0046] Among them, when the first preset particle size is 250mm, it can be understood that when the particle size of the slag at the feed end of the transfer machine 3 is not greater than 250mm, the control module controls the transfer machine 3 to transport the material from the feed end to the first discharge end; when the particle size of the slag at the feed end of the transfer machine 3 is greater than 250mm, the control module controls the transfer machine 3 to transport the material from the feed end to the second discharge end. In other words, the first discharge end of the transfer machine 3 discharges small-sized slag with a particle size of no more than 250mm, and the second discharge end of the transfer machine 3 discharges large-sized slag with a particle size greater than 250mm.

[0047] like Figure 2As shown, in some embodiments, the transfer machine 3 includes: a transfer frame 31, a driving roller 32, a transfer drive mechanism (not shown in the figure), a reversing roller 33 and a transfer belt 34. The transfer frame 31 is arranged at the entrance of the tunnel, the driving roller 32 is rotatably arranged at one end of the transfer frame 31, the transfer drive mechanism is arranged on the transfer frame 31, and the transfer drive mechanism and the driving roller 32 are connected in transmission, the input end of the transfer drive mechanism is connected to the output end of the control module, the reversing roller 33 is rotatably arranged at one end of the transfer frame 31 away from the driving roller 32, the transfer belt 34 is wound around the driving roller 32 and the reversing roller 33, and the transfer belt 34 is located at one end of the driving roller 32 as the first discharge end of the transfer machine 3, the transfer belt 34 is located at one end of the reversing roller 33 as the second discharge end of the transfer machine 3, and the transfer belt 34 is located between the driving roller 32 and the reversing roller 33 and close to the reversing roller 33 as the feed end of the transfer machine 3.

[0048] It can be understood that since the driving roller 32 is rotatably arranged at one end of the transfer frame 31, and the reversing roller 33 is rotatably arranged at the end of the transfer frame 31 away from the driving roller 32, the transfer belt 34 is wound around the driving roller 32 and the reversing roller 33, so that the transfer belt 34 can be rotatably arranged on the transfer frame 31 by using the driving roller 32 and the reversing roller 33, and since the transfer drive mechanism is arranged on the transfer frame 31, and the transfer drive mechanism and the driving roller 32 are connected in transmission, the input end of the transfer drive mechanism is connected to the output end of the control module, so that the control module can control the forward and reverse rotation of the transfer drive mechanism according to the slag particle size at the feeding end of the transfer machine 3, thereby realizing that the upper half of the transfer belt 34 conveys small-size slag along the direction from the reversing roller 33 to the driving roller 32, or the upper half of the transfer belt 34 conveys large-size slag along the direction from the driving roller 32 to the reversing roller 33, thereby ensuring the high feeding efficiency and feeding quality of the slag transportation system.

[0049] It should be noted that the transfer rack 31 is used to carry the drive roller 32, the transfer drive mechanism, the reversing roller 33, etc. The specific type of the transfer rack 31 can be set according to actual needs and is not limited to this.

[0050] The driving roller 32 is used to support and guide the transfer belt 34, and to drive the transfer belt 34 to rotate in a circular manner. The specific type of the driving roller 32 can be set according to actual needs and is not limited to this. For example, the driving roller 32 is a roller structure and is rotatably set on one end of the transfer frame 31 close to the second belt conveyor 2 using a bearing.

[0051] The transfer drive mechanism is used to drive the driving roller 32 to rotate forward or reverse. The specific type of the transfer drive mechanism can be set according to actual needs and is not limited to this. For example, the transfer drive mechanism includes: a motor and a reducer connected in transmission, and the reducer and the driving roller 32 are connected in transmission.

[0052] The reversing roller 33 is used to support and guide the transfer belt 34, and to achieve the reversal of the transfer belt 34. The specific type of the reversing roller 33 can be set according to actual needs and is not limited to this. For example, the reversing roller 33 is a roller structure and is rotatably set at one end of the transfer frame 31 close to the electric locomotive system 5 using a bearing.

[0053] The transfer belt 34 is used to transport slag, and has an upper part for conveying and a lower part for returning. The specific type of the transfer belt 34 can be set according to actual needs and is not limited. Among them, a plurality of roller groups can be set between the driving roller 32 and the reversing roller 33 to better support and guide the transfer belt 34.

[0054] like Figure 2 As shown, in some embodiments, the transfer machine 3 also includes: a first sealed unloading hopper 35, a second sealed unloading hopper 36 and a sealed receiving hopper 37. The first sealed unloading hopper 35 is arranged at the end of the transfer frame 31 away from the reversing roller 33, and the driving roller 32 is located in the first sealed unloading hopper 35. The first sealed unloading hopper 35 serves as the first discharging end of the transfer machine 3. The second sealed unloading hopper 36 is arranged at the end of the transfer frame 31 away from the driving roller 32, and the reversing roller 33 is located in the second sealed unloading hopper 36. The second sealed unloading hopper 36 serves as the second discharging end of the transfer machine 3. The sealed receiving hopper 37 is arranged on the transfer machine 3, and the sealed receiving hopper 37 is located between the first sealed unloading hopper 35 and the second sealed unloading hopper 36. The sealed receiving hopper 37 serves as the feeding end of the transfer machine 3.

[0055] It can be understood that since the first sealed unloading hopper 35 is arranged at the end of the transfer frame 31 away from the reversing roller 33, and the driving roller 32 is located in the first sealed unloading hopper 35, the first sealed unloading hopper 35 can serve as the first discharging end of the transfer machine 3 to discharge small-sized slag. At the same time, by utilizing its own sealed structure, it can also reduce the leakage of small-sized slag during the discharge process.

[0056] Since the second sealed unloading hopper 36 is arranged at the end of the transfer frame 31 away from the driving roller 32, and the reversing roller 33 is located in the second sealed unloading hopper 36, the second sealed unloading hopper 36 can be used as the second discharging end of the transfer machine 3 to discharge large-size slag. At the same time, its own sealed structure can also reduce the leakage of large-size slag during the discharge process.

[0057] Since the sealed receiving hopper 37 is arranged on the transfer machine 3, and the sealed receiving hopper 37 is located between the first sealed unloading hopper 35 and the second sealed unloading hopper 36, the sealed receiving hopper 37 can serve as the feeding end of the transfer machine 3 to receive slag materials. At the same time, by utilizing its own sealed structure, the leakage of slag materials can be reduced during the receiving process.

[0058] It should be noted that the first sealed discharge hopper 35, the second sealed discharge hopper 36 and the sealed receiving hopper 37 are all relatively closed hopper-shaped structures. The specific types of the first sealed discharge hopper 35, the second sealed discharge hopper 36 and the sealed receiving hopper 37 can be set according to actual needs and are not limited to this. For example, the top or side of the first sealed discharge hopper 35 and the second sealed discharge hopper 36 are provided with a feed port for accommodating the transfer belt 34, and flexible sealing members are provided around the feed port. The bottom of the first sealed discharge hopper 35 and the second sealed discharge hopper 36 is provided with a discharge port for discharging materials; the top or side of the sealed receiving hopper 37 is provided with a feed port, and the bottom of the sealed receiving hopper 37 is provided with a discharge port for discharging materials, and flexible sealing members are provided on both sides of the discharge port.

[0059] In some embodiments, the transfer machine 3 further includes: a plurality of buffer rollers, which are rotatably disposed on the transfer frame 31, and the buffer rollers are located below the discharge end of the sealed receiving hopper 37, and the transfer belt 34 passes around the buffer rollers.

[0060] It can be understood that, since the buffer roller is rotatably arranged on the transfer frame 31, and the buffer roller is located below the discharge end of the sealed receiving hopper 37, the transfer belt 34 bypasses the buffer roller, so that the buffer roller can support and guide the transfer belt 34 while also using its own buffer structure to effectively buffer the impact of the slag on the transfer belt 34, thereby reducing the impact, wear, etc. on the transfer belt 34.

[0061] It should be noted that the buffer roller is used to support and guide the transfer belt 34 and buffer the impact of slag. The specific type of the buffer roller can be set according to actual needs and is not limited to this.

[0062] like Figure 1 and Figure 3 As shown, in some embodiments, the system also includes: a third screening device 4, the third screening device 4 is arranged at the discharge end of the shield equipment, and the third screening device 4 is used to screen the slag according to the first preset particle size, the first discharge end of the third screening device 4 outputs slag with a particle size not greater than the first preset particle size and is connected to the feed end of the first belt conveyor 1, and the second discharge end of the third screening device 4 outputs slag with a particle size greater than the first preset particle size.

[0063] It can be understood that, since the third screening device 4 is arranged at the discharge end of the shield equipment, and the first discharge end of the third screening device 4 outputs slag with a particle size not greater than the first preset particle size and is connected to the feed end of the first belt conveyor 1, the second discharge end of the third screening device 4 outputs slag with a particle size greater than the first preset particle size, the third screening device 4 can be used to screen between the shield equipment and the first belt conveyor 1, so that small-sized slag with a particle size not greater than the first preset particle size enters the first belt conveyor 1 for transportation, and large-sized slag with a particle size greater than the first preset particle size is removed from the second discharge end of the third screening device 4. As a result, not only the subsequent processing cost of the slag is reduced, but also the influence of large-sized slag on the belt conveyor equipment in the slag transportation system is effectively reduced, thereby reducing the wear of the belt conveyor equipment and reducing the failure rate of the slag transportation system.

[0064] It should be noted that the third screening device 4 is used to screen the slag according to the first preset particle size, and the specific type of the third screening device 4 can be set according to actual needs and is not limited to this.

[0065] Among them, when the first preset particle size is 250mm, the first discharging end of the third screening device 4 outputs small-particle slag with a particle size not greater than 250mm and discharges the small-particle slag into the first belt conveyor 1, and the second discharging end of the third screening device 4 outputs large-particle slag with a particle size greater than 250mm. Thus, the large-particle size is removed to reduce the impact, wear, etc. on the first belt conveyor 1, the second belt conveyor 2 and the transfer machine 3.

[0066] like Figure 2 As shown, in some embodiments, the system also includes: an electric locomotive system 5, which is arranged in the tunnel and at the entrance of the tunnel, and the first feed end of the electric locomotive system 5 is connected to the second discharge end of the transfer machine 3, and the second feed end of the electric locomotive system 5 is connected to the second discharge end of the third screening device 4.

[0067] It can be understood that, since the first feeding end of the electric locomotive system 5 is connected to the second discharging end of the transfer machine 3, the large-size slag discharged from the second discharging end of the transfer machine 3 can enter the electric locomotive system 5, and since the second feeding end of the electric locomotive system 5 is connected to the second discharging end of the third screening device 4, the large-size slag discharged from the second discharging end of the third screening device 4 can enter the electric locomotive system 5. Thus, the electric locomotive system 5 can be used to transport and process large-size slag, thereby greatly reducing the impact of large-size slag on the first belt conveyor 1, the second belt conveyor 2 and the transfer machine 3 in the slag transportation system while realizing the slag transportation, thereby effectively improving the transportation efficiency and quality of the slag transportation system.

[0068] It should be noted that the electric locomotive system 5 is used to transport equipment, accessories, slag, etc. in the tunnel by using the traction of the electric locomotive. The specific type of the electric locomotive system 5 can be set according to actual needs and is not limited to this.

[0069] like Figure 3 As shown, in some embodiments, the third screening device 4 includes: a chute 41 and a screen 42, the chute 41 is arranged at the discharge end of the shield equipment, and the first discharge end of the chute 41 is located above the feed end of the first belt conveyor 1, and the second discharge end of the chute 41 is located above the second feed end of the electric locomotive system 5, the screen 42 is arranged in the chute 41, and the screen 42 is used to screen the slag according to the first preset particle size, the under-screen channel of the screen 42 is connected to the first discharge end of the chute 41, and the over-screen channel of the screen 42 is connected to the second discharge end of the chute 41.

[0070] It can be understood that since the chute 41 is arranged at the discharge end of the shield equipment, and the first discharge end of the chute 41 is located above the feed end of the first belt conveyor 1, and the second discharge end of the chute 41 is located above the second feed end of the electric locomotive system 5, the chute 41 can stably receive the slag at the discharge end of the shield equipment, and the slag at the first discharge end of the chute 41 can be stably discharged into the first belt conveyor 1, and the slag at the second discharge end of the chute 41 can be stably discharged into the electric locomotive system 5.

[0071] At the same time, since the screen 42 is arranged in the chute 41, and the under-screen channel of the screen 42 is connected to the first discharge end of the chute 41, and the over-screen channel of the screen 42 is connected to the second discharge end of the chute 41, the screen 42 can screen out the slag material with a particle size not greater than the first preset particle size and the slag material with a particle size greater than the first preset particle size, and discharge the small-size slag material with a particle size not greater than the first preset particle size from the first discharge end of the chute 41 into the first belt conveyor 1, and discharge the large-size slag material with a particle size greater than the first preset particle size from the second discharge end of the chute 41 into the electric locomotive system 5. In this way, the screening of the slag material at the discharge end of the shield equipment is realized, and the efficient and stable operation of the slag transportation system is ensured.

[0072] It should be noted that the chute 41 is used for conveying and guiding slag. The specific type of the chute 41 can be set according to actual needs and is not limited to this. For example, the chute 41 can be a three-way structure. The feed end of the chute 41 is located at the top and connected to the discharge end of the shield equipment. The first discharge end of the chute 41 is located on the lower side and arranged above the feed end of the first belt conveyor 1. The second discharge end of the chute 41 is located on the other side at the bottom and arranged above the second feed end of the electric locomotive system 5.

[0073] The screen 42 is used to screen out small-sized slag with a particle size not greater than the first preset particle size and large-sized slag with a particle size greater than the first preset particle size. The specific type of the screen 42 can be set according to actual needs and is not limited to this.

[0074] like Figure 4 and Figure 5 As shown, in some embodiments, the screen 42 includes: a screen frame 421, a plurality of first connecting rods 422, a plurality of second connecting rods 423, a plurality of third connecting rods 424 and a screening drive mechanism (not shown in the figure), the screen frame 421 is arranged in the chute 41, the first connecting rod 422 is movably arranged on the screen frame 421, and the first connecting rod 422 is arranged along the width direction of the screen 42, the second connecting rod 423 is movably arranged on the screen frame 421, and the second connecting rod 423 is arranged along the width direction of the screen 42, wherein the plurality of first connecting rods 422 and the plurality of second connecting rods 423 are spaced apart along the length direction of the screen 42, a plurality of third connecting rods 424 are hinged between adjacent first connecting rods 422 and second connecting rods 423, and the plurality of third connecting rods 424 are spaced apart along the width direction of the screen 42, the screening drive mechanism is transmission-connected to the plurality of first connecting rods 422, and / or the screening drive mechanism is transmission-connected to the plurality of second connecting rods 423. The input end of the screening drive mechanism is connected to the output end of the control module, and the control module is also used to control the screening drive mechanism to drive the first connecting rod 422 and the second connecting rod 423 to move, so as to adjust the distance between adjacent first connecting rods 422 and second connecting rods 423.

[0075] It can be understood that, since the first connecting rod 422 and the second connecting rod 423 are respectively movably arranged on the screen frame 421, and the first connecting rod 422 and the second connecting rod 423 are respectively arranged along the width direction of the screen 42, a plurality of first connecting rods 422 and a plurality of second connecting rods 423 are spaced and distributed along the length direction of the screen 42, so that a plurality of first connecting rods 422 and a plurality of second connecting rods 423 form a movable grid structure on the screen frame 421, and, since the screening drive mechanism is connected to the plurality of first connecting rods 422 by transmission, and / or the screening drive mechanism is connected to the plurality of second connecting rods 423 by transmission, and the input end of the screening drive mechanism is connected to the output end of the control module, so that the control module can control the screening drive mechanism to drive the first connecting rod 422 and the second connecting rod 423 to move, thereby adjusting the spacing between the adjacent first connecting rods 422 and the second connecting rod 423, and then realizing the adjustment of the screening particle size of the screen 42. Thus, the screen 42 can meet different tunnel slag discharge requirements, and is more flexible and convenient to use.

[0076] Among them, since multiple third connecting rods 424 are hinged between adjacent first connecting rods 422 and second connecting rods 423, and multiple third connecting rods 424 are spaced apart along the width direction of the screen 42, the first connecting rods 422 and the second connecting rods 423 can be linked by using multiple third connecting rods 424, so that the screening drive mechanism can stably drive the multiple first connecting rods 422 and the multiple second connecting rods 423. At the same time, by using multiple third connecting rods 424, a more precise screen hole structure can be formed, thereby ensuring the accurate screening of the slag by the screen 42.

[0077] It should be noted that the screen frame 421 is arranged in the chute 41 and is used to carry the first connecting rod 422, the second connecting rod 423 and other components. The specific type of the screen frame 421 can be set according to actual needs and is not limited to this.

[0078] The first connecting rod 422 is movably arranged on the screen frame 421 to cooperate with the second connecting rod 423 to form screen holes of the screen 42. The specific type of the first connecting rod 422 can be set according to actual needs and is not limited to this.

[0079] The second connecting rod 423 is movably arranged on the screen frame 421 to cooperate with the first connecting rod 422 to form screen holes of the screen 42. The specific type of the second connecting rod 423 can be set according to actual needs and is not limited to this.

[0080] The screening drive mechanism is used to drive the first connecting rod 422 and the second connecting rod 423 to move so as to increase or decrease the spacing between adjacent first connecting rods 422 and second connecting rods 423, thereby adjusting the screening particle size of the screen 42. That is to say, the parameters of the first preset particle size can be adjusted by driving the screening drive mechanism. The specific type of the screening drive mechanism can be set according to actual needs and is not limited to this. For example, multiple first connecting rods 422 can be slidably arranged along the length direction of the screen 42 on a first bracket in the screen frame 421 that can move along the thickness direction of the screen 42, and multiple second connecting rods 423 can be slidably arranged along the length direction of the screen 42 on a second bracket in the screen frame 421 that can move along the thickness direction of the screen 42. The screening drive mechanism can be a motor, a hydraulic cylinder, a cylinder, etc. The screening drive mechanism drives the first bracket and the second bracket to move away from or closer to each other, thereby realizing the adjustment of the distance between adjacent first connecting rods 422 and second connecting rods 423.

[0081] The third connecting rod 424 is used to connect the first connecting rod 422 and the second connecting rod 423 to ensure stable linkage between the first connecting rod 422 and the second connecting rod 423. The specific type of the third connecting rod 424 can be set according to actual needs and is not limited to this.

[0082] like Figure 6As shown, in some embodiments, the second screening device 6 includes: a third sealed discharge hopper 61 and a partition 62, the third sealed discharge hopper 61 is arranged at the discharge end of the second belt conveyor 2, the partition 62 is arranged in the third sealed discharge hopper 61, and the side of the partition 62 close to the discharge end of the second belt conveyor 2 forms a first discharge channel, and the side of the partition 62 away from the discharge end of the second belt conveyor 2 forms a second discharge channel, and the second belt conveyor 2 is used to transport slag according to a preset speed, so that slag with a particle size smaller than the second preset particle size enters the first discharge channel, and slag with a particle size not less than the second preset particle size enters the second discharge channel.

[0083] It can be understood that since the third sealed discharge hopper 61 is arranged at the discharge end of the second belt conveyor 2, the slag at the discharge end of the second belt conveyor 2 can be discharged using the third sealed discharge hopper 61. At the same time, the sealing structure of the third sealed discharge hopper 61 can also reduce the leakage of slag during the discharge process.

[0084] Since a first discharge channel is formed on the side of the partition 62 close to the discharge end of the second belt conveyor 2, and a second discharge channel is formed on the side of the partition 62 away from the discharge end of the second belt conveyor 2, the second belt conveyor 2 can convey the slag according to a preset speed, so that the slag with a particle size smaller than the second preset particle size enters the first discharge channel, and the slag with a particle size not less than the second preset particle size enters the second discharge channel, thereby realizing the screening of the slag at the discharge end of the second belt conveyor 2, thereby effectively reducing the subsequent processing cost of the slag.

[0085] It should be noted that when the second belt conveyor 2 transports slag, based on the principle of inertia, slag with larger particles will produce different motion trajectories from slag with smaller particles during the unloading process due to its own kinetic energy and the speed of the second belt conveyor 2, thereby enabling automatic physical screening.

[0086] The third sealed discharge hopper 61 is a relatively closed bucket-shaped structure. The specific type of the third sealed discharge hopper 61 can be set according to actual needs and is not limited to this. For example, the top or side of the third sealed discharge hopper 61 is provided with a feed port for accommodating the transfer belt 34, and flexible sealing members are provided around the feed port. The bottom of the third sealed discharge hopper 61 is provided with a discharge port for discharging materials.

[0087] The partition 62 is used to separate the first discharge channel from the second discharge channel in the third sealed discharge hopper 61. The specific type of the partition 62 can be set according to actual needs and is not limited to this. For example, the partition 62 is set vertically, and the specific position of the partition 62 is determined according to the ejection path of slag with different particle sizes.

[0088] The slag transport system of this embodiment has at least the following beneficial effects:

[0089] Improve production efficiency: The classification and screening function improves the efficiency and quality of slag discharge. By accurately classifying slag materials of different particle sizes, it can better meet the requirements of subsequent processing or transportation and improve the efficiency and quality of the entire slag discharge process.

[0090] Ensure equipment safety: Timely removal of large-particle materials can prevent them from damaging the belt equipment, extend the service life of the equipment, and reduce problems such as blockage and damage caused by large-particle materials.

[0091] Reduce maintenance costs: Reducing the impact of large-size slag on the slag discharge system can effectively reduce the replacement frequency of parts in the belt equipment, thereby reducing maintenance costs.

[0092] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.

[0093] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0094] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0095] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A slag transport system based on multi-stage screening, characterized in that: include: A first belt conveyor device, wherein the first belt conveyor device is arranged in the tunnel, and a feeding end of the first belt conveyor device is connected to a discharging end of the shield equipment; a first screening device, the first screening device being arranged at the opening of the tunnel and being used for screening the slag material according to a first preset particle size; a second belt conveyor device, wherein the second belt conveyor device is arranged outside the tunnel, and the first belt conveyor device, the first screening device and the second belt conveyor device are connected in sequence; A second screening device is arranged at the discharge end of the second belt conveyor, and the second screening device is used to screen the slag material according to a second preset particle size, and the second preset particle size is smaller than the first preset particle size.

2. The slag transportation system based on multi-stage screening according to claim 1 is characterized in that: The first screening device comprises: A transfer machine, the transfer machine is arranged at the opening of the tunnel, and the feed end of the transfer machine is located between the first discharge end and the second discharge end and close to the second discharge end, the feed end of the transfer machine is connected to the discharge end of the first belt conveyor device, and the first discharge end of the transfer machine is connected to the feed end of the second belt conveyor device; A visual inspection module, wherein the inspection end of the visual inspection module is arranged on the feeding end of the transfer machine, and the visual inspection module is used to detect the particle size of the slag at the feeding end of the transfer machine; A control module, wherein the control module is used to control the transfer machine to transport materials from the feed end to the first discharge end when the particle size of the slag at the feed end of the transfer machine is not larger than the first preset particle size, and to control the transfer machine to transport materials from the feed end to the second discharge end when the particle size of the slag at the feed end of the transfer machine is larger than the first preset particle size.

3. The slag transport system based on multi-stage screening according to claim 2 is characterized in that: The transfer machine comprises: A transfer rack, the transfer rack being arranged at the opening of the tunnel; A driving roller, the driving roller being rotatably disposed at one end of the transfer frame; A transfer drive mechanism, wherein the transfer drive mechanism is arranged on the transfer frame, the transfer drive mechanism is connected to the drive roller by transmission, and the input end of the transfer drive mechanism is connected to the output end of the control module; A reversing roller, the reversing roller is rotatably arranged on one end of the transfer frame away from the driving roller; The transfer belt is wound around the driving roller and the reversing roller, and the transfer belt is located at one end of the driving roller as the first discharge end of the transfer machine, and the transfer belt is located at one end of the reversing roller as the second discharge end of the transfer machine. The transfer belt is located between the driving roller and the reversing roller and close to the reversing roller as the feed end of the transfer machine.

4. The slag transportation system based on multi-stage screening according to claim 3 is characterized in that: The transfer machine also includes: A first sealed discharge hopper, which is arranged at one end of the transfer frame away from the reversing roller, and the driving roller is located in the first sealed discharge hopper, and the first sealed discharge hopper serves as a first discharge end of the transfer machine; A second sealed discharge hopper, which is arranged at an end of the transfer frame away from the driving roller, and the reversing roller is located in the second sealed discharge hopper, and the second sealed discharge hopper serves as a second discharge end of the transfer machine; A sealed material receiving hopper is provided on the transfer machine, and the sealed material receiving hopper is located between the first sealed material discharge hopper and the second sealed material discharge hopper, and the sealed material receiving hopper serves as a feeding end of the transfer machine.

5. The slag transport system based on multi-stage screening according to claim 4 is characterized in that: The transfer machine also includes: A plurality of buffer rollers are rotatably arranged on the transfer frame, and the buffer rollers are located below the discharge end of the sealed material receiving hopper, and the transfer belt passes around the buffer rollers.

6. The slag transportation system based on multi-stage screening according to claim 2 is characterized in that: The system further comprises: A third screening device is arranged at the discharge end of the shield equipment, and the third screening device is used to screen the slag according to the first preset particle size. The first discharge end of the third screening device outputs slag with a particle size not greater than the first preset particle size and is connected to the feed end of the first belt conveyor device, and the second discharge end of the third screening device outputs slag with a particle size greater than the first preset particle size.

7. The slag transportation system based on multi-stage screening according to claim 6 is characterized in that: The system further comprises: An electric locomotive system is arranged in the tunnel and at the entrance of the tunnel, and the first feed end of the electric locomotive system is connected to the second discharge end of the transfer machine, and the second feed end of the electric locomotive system is connected to the second discharge end of the third screening device.

8. The slag transport system based on multi-stage screening according to claim 6, characterized in that: The third screening device comprises: A chute, wherein the chute is arranged at the discharge end of the shield equipment, and the first discharge end of the chute is located above the feed end of the first belt conveyor device, and the second discharge end of the chute is located above the second feed end of the electric locomotive system; The screen is arranged in the chute and is used to screen the slag according to the first preset particle size, the under-screen channel of the screen is connected to the first discharge end of the chute, and the over-screen channel of the screen is connected to the second discharge end of the chute.

9. The slag transportation system based on multi-stage screening according to claim 8, characterized in that: The screen comprises: a screen frame, the screen frame being arranged in the chute; A plurality of first connecting rods, wherein the first connecting rods are movably arranged on the screen frame, and the first connecting rods are arranged along the width direction of the screen; A plurality of second connecting rods, wherein the second connecting rods are movably arranged on the screen frame and are arranged along the width direction of the screen, wherein the plurality of first connecting rods and the plurality of second connecting rods are spaced apart and distributed along the length direction of the screen; A plurality of third connecting rods, wherein the plurality of third connecting rods are hingedly connected between the adjacent first connecting rods and the second connecting rods, and the plurality of third connecting rods are distributed at intervals along the width direction of the screen; A screening drive mechanism, wherein the screening drive mechanism is drivingly connected to the plurality of the first connecting rods, and / or the screening drive mechanism is drivingly connected to the plurality of the second connecting rods; Wherein, the input end of the screening drive mechanism is connected to the output end of the control module, and the control module is also used to control the screening drive mechanism to drive the first connecting rod and the second connecting rod to move so as to adjust the distance between adjacent first connecting rods and second connecting rods.

10. The slag transportation system based on multi-stage screening according to claim 1, characterized in that: The second screening device comprises: a third sealed discharge hopper, the third sealed discharge hopper being arranged at a discharge end of the second belt conveyor; A partition, wherein the partition is arranged in the third sealed discharge hopper, and a side of the partition close to the discharge end of the second belt conveyor device forms a first discharge channel, and a side of the partition away from the discharge end of the second belt conveyor device forms a second discharge channel; Wherein, the second belt conveyor is used to convey slag according to a preset speed, so that slag with a particle size smaller than the second preset particle size enters the first discharge channel, and slag with a particle size not less than the second preset particle size enters the second discharge channel.

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