A vertical belt machine slag cleaning system

Abstract

The application relates to a vertical belt machine residue cleaning system, which comprises a vertical belt machine upper horizontal section, a horizontal section residue loading hopper, a first high-pressure air flushing pipeline, a first residue soil beating device, a second high-pressure air flushing pipeline, a second residue soil beating device, a residue loading hopper overturning straight section, an inclined steel plate, a water collecting pit, a vertical belt machine lower horizontal section, a vertical lifting device, a mud blocking wall and a profile steel platform. The top of the vertical belt machine lower horizontal section is fixedly connected to the top of the vertical belt machine upper horizontal section. The horizontal section residue loading hopper is arranged on one side of the vertical belt machine upper horizontal section. The outside of the first high-pressure air flushing pipeline is arranged on one side of the bottom of the horizontal section residue loading hopper. The outside of the second high-pressure air flushing pipeline is fixedly connected to the bottom of the horizontal section residue loading hopper. According to the vertical belt machine residue cleaning system, multi-stage flushing and beating devices are arranged on the vertical belt machine upper horizontal section, so that most of the mud residue can slide to the ground residue soil pit through the inclined steel plate.

Description

Technical Field

[0001] This application relates to the field of vertical belt conveyor slag cleaning technology, and more specifically, to a vertical belt conveyor slag cleaning system. Background Technology

[0002] During shield tunneling, the muck and material transportation system is a crucial factor restricting the progress of shield tunneling, especially in long-distance shield tunnel construction. Continuous belt conveyors for muck removal have solved the problem of slow muck removal speed of traditional rail transport. Using vertical belt conveyors to lift muck and extend belt frames to enable relay transportation of muck within the tunnel is currently the cutting-edge technology and development direction for long-distance shield tunneling.

[0003] Inside the tunnel, excavated soil is transported to the shaft opening via conveyor belt relay. Then, the excavated soil transported by the horizontal conveyor belt is lifted by the loading hopper of the vertical conveyor belt to the ground excavated soil pit for unloading. During the process of the vertical conveyor belt loading hopper transporting the excavated soil to the ground and then back to the underground horizontal section, the overturned excavated soil particles, under their own weight and vibration, cause serious leakage problems in the circulating excavated soil hopper transportation mechanism. Utility Model Content

[0004] The purpose of this application is to provide a vertical belt conveyor slag cleaning system, which aims to improve the problem of severe slag leakage in the circulating slag hopper transport mechanism caused by the sticky particles in the overturned slag hopper under their own weight and vibration.

[0005] This application provides a vertical belt conveyor slag cleaning system, which adopts the following technical solution: A vertical belt conveyor slag cleaning system includes an upper horizontal section of the vertical belt conveyor, a horizontal section slag hopper, a first high-pressure air flushing pipe, a first slag tamping device, a second high-pressure air flushing pipe, a second slag tamping device, a slag hopper tilting straight section, an inclined steel plate, a sump pit, a lower horizontal section of the vertical belt conveyor, a vertical lifting device, a mud retaining wall, and a steel platform.

[0006] Step 1, Slag Cleaning Device for Horizontal Section of Vertical Belt Conveyor: In the straight section of the slag hopper flipping section of the horizontal section of the vertical belt conveyor, a first row of two high-pressure flushing pipes parallel to the length direction of the slag hopper is first set up. Multiple high-pressure flushing nozzles are set on each water pipe. After the first row of high-pressure flushing pipes, multiple high-pressure air nozzles are set on the top of the first high-pressure air flushing pipe. After the first high-pressure air flushing pipe, the first slag beating device is set up to initially flush and beat the slag into the slag pit.

[0007] After the first sludge cleaning process, a second sludge cleaning process is set up. First, two high-pressure flushing pipes are installed, followed by one high-pressure air pipe and multiple beating devices to enhance the sludge cleaning intensity.

[0008] An inclined steel plate (8) is installed below the straight section of the slag hopper flipping on the horizontal section of the vertical belt conveyor to collect and guide the mud and slag particles falling from the slag hopper of the horizontal section to slide orderly into the slag pit.

[0009] Step 2, the vertical belt conveyor lower horizontal section slag cleaning device: The vertical lifting device is installed next to the water collection pit adjacent to the sinking section of the expanded end of the shield shaft, the volume of the sinking section of the expanded end is 424.97m3; inclined steel plates are set at the bottom of the vertical lifting slag device and below the slag hopper of the lower horizontal section to guide the falling slag to slide orderly into the water collection pit.

[0010] Mud retaining walls with a height of 900mm are installed on three sides of the lower horizontal section of the vertical belt conveyor, and the closest distance from the steel column of the lower horizontal section is 1500mm, which can prevent mud and slag from flowing back into the track area.

[0011] Step 3: Install an excavator platform cleaning device in the water collection pool: Set up a T-shaped steel platform in the sinking section of the enlarged end of the shield tunnel. Lay 10mm steel plates on the steel platform. The excavator walks on the steel platform to clean the accumulated slag in the water collection pool and the horizontal section below the vertical belt conveyor. The battery-powered vehicle with a slag bucket is used to load slag and transport it to the hoisting port. The gantry crane lifts it out to the ground slag pit for unloading.

[0012] The above technical solution achieves efficient cleaning of the vertical conveyor belt slag removal system through a step-by-step, multi-device collaborative design. In the upper horizontal section of the vertical conveyor belt, a combination of two rows of high-pressure flushing pipes, high-pressure air flushing pipes, and a slag-beating device is used to clean the slag in two stages. Simultaneously, inclined steel plates guide the mud, water, and slag particles to slide down, ensuring effective cleaning and an orderly path. In the lower horizontal section of the vertical conveyor belt, a vertical lifting device and inclined steel plates are installed to collect mud and slag, while three sides are reinforced with mud retaining walls to prevent mud and slag from flowing back into the track area. A T-shaped steel platform is installed in the collection tank, allowing excavators to move and clean the slag. This, combined with battery-powered vehicles, slag buckets, and gantry cranes, facilitates slag transportation. The various parts of the system work together effectively to clean the slag in the upper and lower horizontal sections of the vertical conveyor belt, prevent mud and slag overflow, standardize the slag transportation process, improve cleaning efficiency and safety, and ensure the normal operation of the vertical conveyor belt and the safety of the track area.

[0013] Preferably, in step one, the high-pressure flushing pipe has a diameter of DN25, a pipe length that is the same as the slag hopper length, and nine nozzles are arranged on a single water pipe with a spacing of 200mm and a nozzle height of 50mm, so that the high-pressure water jet is V-shaped.

[0014] By adopting the above technical solution, the high-pressure flushing pipe is designed with a diameter of DN25 and a length consistent with the slag hopper. Each water pipe is equipped with nine nozzles spaced 200mm apart and 50mm high, spraying out a V-shaped high-pressure water jet. This specification and layout ensure that the flushing pipe, while adapting to the length of the slag hopper, can achieve full coverage flushing of the slag accumulated in the slag hopper through a reasonable number and spacing of nozzles. The appropriate nozzle height and V-shaped water jet design can enhance the impact force of the water flow, effectively loosening and flushing the slag, and improving the efficiency and effect of slag cleaning.

[0015] Preferably, as described in step one, the high-pressure flushing pipe has a diameter of φ50mm, a pipe length equal to the length of the slag hopper, and seven nozzles arranged on a single air pipe with a spacing of 230mm and a nozzle height of 100mm, and the nozzles are set vertically.

[0016] By adopting the above technical solution, the high-pressure flushing pipeline adopts a diameter of φ50mm and a pipeline length of the same as that of the slag hopper, so that it can fully cover the slag accumulation area of ​​the slag hopper. Each air pipe is equipped with 7 nozzles with a spacing of 230mm and a height of 100mm, which are set vertically. The large pipe diameter can ensure sufficient water supply, and the reasonable nozzle spacing and sufficient height ensure that there are no dead corners in the flushing range. The vertically set nozzles allow the high-pressure water flow to impact the slag in the most direct and powerful way, effectively improving the flushing force and achieving efficient and comprehensive cleaning of the slag accumulation in the slag hopper.

[0017] Preferably, as described in step one, the two high-pressure flushing pipes in each row are spaced 800mm apart, the high-pressure flushing pipes are spaced 0.8m apart from the high-pressure air pipes, the slapping devices are 1000mm away from the high-pressure air pipes, and the multiple slapping devices are spaced 1000mm apart.

[0018] By adopting the above technical solution, the two high-pressure flushing pipes in each row are spaced 800mm apart and 0.8m apart from the high-pressure air pipes. The beating devices are 1000mm away from the high-pressure air pipes, and multiple beating devices are spaced 1000mm apart. This precise spacing allows the devices to form a scientific and orderly collaborative cleaning system. The reasonably spaced high-pressure flushing pipes can achieve double flushing coverage of the accumulated residue. The high-pressure flushing pipes and the high-pressure air pipes maintain an appropriate distance, which can be used to further blow away residual residue with high-pressure air after flushing. The spacing between the beating devices and the high-pressure air pipes and themselves can ensure that stubborn residue can be effectively beaten after air blowing. The devices have clear division of labor and orderly connection, which significantly enhances the cleaning intensity and effect of the accumulated residue.

[0019] Preferably, as described in step one, the inclined steel plate set under the slag hopper is an inclined chute for guiding the mud and slag to slide down. The steel plate is 10mm thick and 4000×2000mm in size. It is welded to the crossbeam of the upper horizontal section steel column. The steel plate extends 200mm beyond the crossbeam to form a continuous guide chute for receiving mud and slag.

[0020] By adopting the above technical solution, the inclined steel plate installed under the slag hopper is 10mm thick and 4000×2000mm in size. It is welded to the crossbeam of the upper horizontal section steel column and extends 200mm beyond the crossbeam to form a continuous inclined chute. This design ensures structural strength and bearing area through sufficient steel plate thickness and size. The part extending beyond the crossbeam ensures that mud and slag will not leak from the edge. The welding and fixing method ensures the stability of the chute. The continuous inclined structure can guide mud and slag to slide quickly and orderly into the slag pit along the preset path, avoiding slag accumulation and mud and water overflow, and improving the reliability of the cleaning system and environmental cleanliness.

[0021] Preferably, as described in step two, the water collection pit of the sinking section at the enlarged end of the shield tunnel has dimensions of 17300×14450×1700mm and a volume of 424.97m3, and is used to collect sewage discharged during shield tunneling and mud and sludge falling from the vertical conveyor belt.

[0022] By adopting the above technical solution, the water collection pit of the enlarged end sinking section of the shield tunnel shaft has a size of 17300×14450×1700mm, forming a large capacity space of 424.97m³. Such a large volume water collection pit can fully meet the needs of collecting a large amount of sewage discharged from the shield tunneling construction and mud falling from the vertical conveyor belt, avoiding sewage overflow and mud accumulation, ensuring a clean environment in the construction area, and providing sufficient buffer space for subsequent cleaning and transportation work, ensuring the smooth progress of the entire construction process.

[0023] Preferably, in step two, the inclined steel plate is 10mm thick and 3000×2000mm in size. The top of the inclined steel plate extends 1m beyond the crossbeam of the steel column, and the bottom of the steel plate extends to the bottom surface of the structure. The continuous butt joints between each steel plate are flat and welded to the crossbeam of the lower horizontal section. The side of the lower horizontal section is sealed with steel plates to allow the sludge to be discharged into the sump in an orderly manner.

[0024] By adopting the above technical solution, the inclined steel plates are 10mm thick and 3000×2000mm in size. The top extends 1m beyond the steel column beam and the bottom extends to the bottom of the structure. Each steel plate is continuously joined together, with a flat surface, and welded to the lower horizontal section of the steel beam. Combined with the side steel plates of the lower horizontal section for sealing, the thick steel plates ensure structural strength, the appropriate size and extension design ensure that the sludge has a sufficient path to slide down, the continuous and flat joints and welds ensure the smoothness of the sludge sliding down, and the side sealing prevents the sludge from overflowing. Together, they ensure that the sludge is discharged into the collection pit in an orderly manner according to the preset path, effectively avoiding the sludge from scattering and accumulating, improving cleaning efficiency and the cleanliness of the construction environment.

[0025] Preferably, as described in step two, retaining walls are installed on three sides of the horizontal section below the vertical belt conveyor, using autoclaved aerated concrete blocks with a thickness of 200mm and a height of 900mm.

[0026] By adopting the above technical solution, a 200mm thick and 900mm high autoclaved aerated concrete block mud retaining wall is set on three sides of the lower horizontal section of the vertical conveyor. With its appropriate thickness and height, the autoclaved aerated concrete block effectively prevents mud from flowing back into the track area. While ensuring structural stability, it avoids mud pollution of the track area and affects normal operation. Moreover, the material properties facilitate construction and installation, providing good protection while taking into account construction convenience and economy.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. This utility model uses a multi-stage flushing and beating device installed on the horizontal section of a vertical belt conveyor to allow most of the sludge to slide down the inclined steel plate into the slag pit on the ground.

[0029] 2. This utility model uses inclined steel plates continuously arranged at the bottom of the vertical belt conveyor and below the slag hopper of the lower horizontal section to ensure that the falling mud and slag are discharged in an orderly manner into the adjacent water collection pit.

[0030] 3. This utility model involves setting up a steel platform inside the sump pit, on which a small excavator can move to clean the mud and sludge around the inclined steel plate and inside the sump pit. Attached Figure Description

[0031] Figure 1 A diagram of the slag removal device for the horizontal section of a vertical belt conveyor provided by this utility model;

[0032] Figure 2 Cross-sectional view of the slag flushing device for the horizontal section of a vertical belt conveyor provided by this utility model;

[0033] Figure 3 The diagram shows the slag removal device for the lower horizontal section of a vertical belt conveyor provided by this utility model.

[0034] Figure 4 Drawings of the sump steel platform provided for this utility model;

[0035] Explanation of reference numerals in the attached drawings: 1. Upper horizontal section of vertical belt conveyor; 2. Slag hopper of horizontal section; 3. First high-pressure air flushing pipe; 4. First slag tamping device; 5. Second high-pressure air flushing pipe; 6. Second slag tamping device; 7. Straight section for slag hopper tilting; 8. Inclined steel plate; 9. Sump; 10. Lower horizontal section of vertical belt conveyor; 11. Vertical lifting device; 12. Mud retaining wall; 13. Steel platform. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4This application will be described in further detail below.

[0037] Example: A vertical belt conveyor slag removal system, referring to... Figures 1 to 4 The system includes a vertical belt conveyor slag cleaning system, comprising an upper horizontal section 1 of the vertical belt conveyor, a horizontal section slag hopper 2, a first high-pressure air flushing pipe 3, a first slag tamping device 4, a second high-pressure air flushing pipe 5, a second slag tamping device 6, a slag hopper tilting straight section 7, an inclined steel plate 8, a water collection pit 9, a lower horizontal section 10 of the vertical belt conveyor, a vertical lifting device 11, a mud retaining wall 12, and a steel platform 13, characterized in that:

[0038] Step 1: Slag Cleaning Device on Horizontal Section 1 of Vertical Belt Conveyor: On the straight section 7 of the slag hopper flipping section 1 of the horizontal section 1 of the vertical belt conveyor, first set up two high-pressure flushing pipes in the first row parallel to the length direction of the slag hopper. Set up multiple high-pressure flushing nozzles on each pipe. After the first row of high-pressure flushing pipes, set up a first high-pressure air flushing pipe 3 with multiple high-pressure air nozzles at the top. After the first high-pressure air flushing pipe 3, set up a first slag beating device 4 to initially flush and beat the slag into the slag pit.

[0039] After the first sludge cleaning process, a second sludge cleaning process is set up. First, two high-pressure flushing pipes are installed, followed by one high-pressure air pipe and multiple beating devices to enhance the sludge cleaning intensity.

[0040] An inclined steel plate 8 is installed below the straight section 7 of the slag hopper flipping on the horizontal section 1 of the vertical belt conveyor to collect and guide the mud and slag particles falling from the slag hopper 2 of the horizontal section to slide orderly into the slag pit.

[0041] Step 2: Vertical belt conveyor lower horizontal section 10 slag cleaning device: Install the vertical lifting device 11 next to the water collection pit 9 adjacent to the sinking section of the shield shaft enlarged end. The sinking section of the enlarged end has a volume of 424.97m3. Set up inclined steel plates 8 at the bottom of the vertical lifting slag device and below the slag hopper of the lower horizontal section to guide the falling slag to slide into the water collection pit 9 in an orderly manner.

[0042] Mud retaining walls 12, 900mm high, are installed on three sides of the lower horizontal section 10 of the vertical belt conveyor. The closest distance to the steel column of the lower horizontal section is 1500mm, which can prevent mud and slag from flowing back into the track area.

[0043] Step 3: Install an excavator platform cleaning device in the water collection tank: Set up a T-shaped steel platform 13 in the sinking section of the shield tunnel's enlarged end. Lay a 10mm steel plate on the steel platform 13. The excavator travels on the steel platform 13 to clean the accumulated slag in the water collection tank and the horizontal section 10 below the vertical belt conveyor. The battery-powered vehicle with a slag bucket is used to load slag and transport it to the hoisting port. The gantry crane lifts it out to the ground slag pit for unloading.

[0044] Specifically, in the slag cleaning stage of the horizontal section 1 on the vertical belt conveyor, at the straight section 7 where the slag hopper flips, a first row of two high-pressure flushing pipes parallel to the length of the slag hopper 2 is first installed. Each pipe has multiple high-pressure flushing nozzles, which are arranged at scientific intervals to spray a strong high-pressure water jet to initially wash the slag adhering to the belt and the slag hopper. Behind the first row of high-pressure flushing pipes, a first high-pressure air flushing pipe 3 is installed. Multiple high-pressure air nozzles at the top of the pipe can spray high-pressure airflow to further blow away the slag remaining after flushing. Subsequently, the first slag beating device 4 beats the stubborn slag off by mechanical beating, causing it to fall into the slag pit, completing the initial cleaning. Following the first slag removal process, a second slag removal process is implemented, also equipped with two high-pressure flushing pipes, one high-pressure air pipe, and multiple beating devices to further enhance the slag removal intensity and ensure complete removal of slag. Furthermore, an inclined steel plate 8 is installed below the straight section 7 of the slag hopper tilting mechanism on the horizontal section 1 of the vertical conveyor belt. This plate effectively collects the mud, water, and slag particles falling from the slag hopper 2 in the horizontal section and guides them to slide orderly down a specific path into the slag pit. For slag removal in the lower horizontal section 10 of the vertical conveyor belt, a vertical lifting device 11 is installed next to the water collection pit 9 adjacent to the sinking section of the enlarged end of the shield tunnel. This sinking section has a volume of 424.97 m³, sufficient to hold a large amount of mud and wastewater. Simultaneously, inclined steel plates 8 are installed at the bottom of the vertical mud lifting device and below the slag hopper in the lower horizontal section, allowing the falling mud and water to be collected and guided down a specific path into the slag pit. The fallen mud and slag can slide orderly down the surface of the steel plate into the water collection pit 9. In addition, a mud retaining wall 12 with a height of 900mm and a minimum distance of 1500mm from the steel column of the lower horizontal section 10 of the vertical belt conveyor is set on three sides to effectively prevent mud and slag from flowing back into the track area and ensure the normal operation of the track area. In the water collection pool cleaning process, a T-shaped steel platform 13 is set in the sinking section of the shield shaft enlargement end, and a 10mm steel plate is laid on the steel platform 13 to provide a stable walking platform for the excavator. The excavator can move freely on the platform to clean the accumulated slag in the water collection pool and the lower horizontal section 10 of the vertical belt conveyor. The cleaned slag is loaded by a battery-powered vehicle pulling a slag bucket, then transported to the hoisting port, and finally lifted out by a gantry crane to the ground slag pit for unloading. All parts of the entire system work closely together to form a complete and efficient slag cleaning process.

[0045] Reference Figure 2 and Figure 3As described in step 1, the high-pressure flushing pipe has a diameter of DN25 and a length equal to the slag hopper length. Each water pipe has 9 nozzles spaced 200mm apart, with a nozzle height of 50mm, producing a V-shaped high-pressure water jet. Alternatively, as described in step 1, the high-pressure flushing pipe has a diameter of φ50mm and a length equal to the slag hopper length. Each air pipe has 7 nozzles spaced 230mm apart, with a nozzle height of 100mm. The nozzles are vertically positioned. As described in step 1, each row of two high-pressure flushing pipes is spaced 800mm apart. The high-pressure flushing pipes are... The high-pressure air pipes are spaced 0.8m apart, and the striking devices are 1000mm away from the high-pressure air pipes. Multiple striking devices are spaced 1000mm apart. As described in step 1, the inclined steel plate 8 installed below the slag hopper serves as a sloping chute to guide the mud and slag as it slides down. The steel plate is 10mm thick and 4000×2000mm in size. It is welded to the crossbeam of the upper horizontal section steel column, extending 200mm beyond the crossbeam to form a continuous guide chute for receiving mud and slag. As described in step 2, the water collection pit 9 of the sinking section at the enlarged end of the shield tunnel has a size of 1... The structure measures 7300×14450×1700mm and has a volume of 424.97m³. It is used to collect sewage discharged during tunnel boring machine (TBM) construction and sludge falling from the vertical conveyor belt. As described in step 2, the inclined steel plate 8 is 10mm thick and 3000×2000mm in size. The top of the inclined steel plate 8 extends 1m beyond the crossbeam of the steel column, and the bottom of the steel plate extends to the bottom surface of the structure. The continuous butt joints between each steel plate have a smooth surface and are welded to the lower horizontal section of the steel crossbeam. The sides of the lower horizontal section are sealed with steel plates to allow the sludge to be discharged into the collection pit 9 in an orderly manner. As described in step 2, retaining walls 12 are installed on three sides of the horizontal section 10 below the vertical conveyor belt. These walls are made of autoclaved aerated concrete blocks, with a thickness of 200mm and a height of 900mm. As described in step 3, the steel platform 13 is supported by 200×200mm steel stirrups. Each stirrup is 2100mm long and has two legs. The longitudinal spacing between the steel stirrups is 800mm. The bottom and top are fixed with φ14 steel bars. A 10mm steel plate is laid on the top surface of the stirrups. A 60 excavator is used for slag removal.

[0046] Specifically, in the vertical belt conveyor slag cleaning system, the parameters and layout of each component are carefully designed to achieve efficient cleaning. Regarding the slag cleaning device for the horizontal section 1 of the vertical belt conveyor, the first row of high-pressure flushing pipes has a diameter of DN25 and a length equal to that of the slag hopper 2. Each pipe has nine nozzles spaced 200mm apart and 50mm high, spraying out a V-shaped high-pressure water jet. This design utilizes the impact force of the high-pressure water flow to cover a large area of ​​slag, initially flushing and loosening it. The second row of high-pressure flushing pipes has a diameter of φ50mm and is also the same length as the slag hopper 2. Each pipe has seven nozzles spaced 230mm apart and 100mm high, arranged vertically. The large pipe diameter and vertical nozzles provide stronger water flow impact force for deep flushing of stubborn slag. Two high-pressure flushing pipes are spaced 800mm apart in each row, and the high-pressure flushing pipes are 0.8m apart from the high-pressure air pipes. The beating devices are 1000mm away from the high-pressure air pipes, and multiple beating devices are spaced 1000mm apart. This precise spacing ensures that the three processes of high-pressure flushing, high-pressure air blowing, and beating are closely connected and do not interfere with each other, forming an efficient slag cleaning process. The inclined steel plate 8 installed under the slag hopper 2 is a 10mm thick inclined chute with dimensions of 4000×2000mm. It is welded to the crossbeam of the upper horizontal section steel column and extends 200mm beyond the crossbeam. It can stably receive and guide the mud, water, and slag particles falling from the horizontal section of the slag hopper 2, allowing them to slide orderly down the chute into the slag pit.

[0047] The slag removal device in the lower horizontal section 10 of the vertical conveyor belt includes a water collection pit 9 in the sinking section of the enlarged end of the shield tunnel, measuring 17300×14450×1700mm with a volume of 424.97m³. This large space is sufficient to collect the large amount of sewage discharged during shield tunneling and the slag falling from the vertical conveyor belt. The inclined steel plates 8, 10mm thick and 3000×2000mm in size, extend 1m beyond the steel column beams at the top and down to the bottom of the structure. The steel plates are continuously joined together with a smooth surface and welded to the steel beams of the lower horizontal section. Combined with the steel plates sealing the sides of the lower horizontal section, this creates a smooth slag sliding channel, ensuring the slag is orderly discharged into the water collection pit 9. The mud retaining walls 12, installed on three sides of the lower horizontal section 10 of the vertical conveyor belt, are constructed of 200mm thick and 900mm high autoclaved aerated concrete blocks. These effectively prevent slag from flowing back into the track area, ensuring safe operation of the track area.

[0048] The excavator platform cleaning device installed in the water collection tank uses 200×200mm steel stirrups as supports for the steel platform 13. The stirrups are 2100mm long, and each stirrup is equipped with two outriggers with a longitudinal spacing of 800mm. The bottom and top are fixed with φ14 steel bars to ensure the stability and reliability of the platform. The top surface of the stirrups is covered with 10mm steel plates to provide a solid working surface for the 60mm excavator, which can move flexibly on the platform to efficiently clean the accumulated slag in the water collection tank and the horizontal section 10 below the vertical belt conveyor. The cleaned slag is loaded by a battery-powered truck with a slag bucket and then lifted by a gantry crane to the ground slag pit for unloading. The parameters of each component of the whole system are reasonable and coordinated, realizing the efficient and orderly operation of the vertical belt conveyor slag cleaning.

[0049] The implementation principle of this application embodiment is as follows:

[0050] When the vertical conveyor belt is running on the horizontal section 1, at the straight section 7 where the slag hopper is tilting, the first row of two high-pressure flushing pipes with a diameter of DN25 and the same length as the slag hopper 2 are activated first. High-pressure flushing nozzles with a spacing of 200mm and a height of 50mm, arranged in a V-shape, initially flush the slag accumulated on the conveyor belt and slag hopper 2. Subsequently, high-pressure air nozzles at the top of the first high-pressure air flushing pipe 3 spray high-pressure air to blow away any remaining slag after flushing. Immediately afterwards, the first slag-beating device 4 mechanically beats the slag, causing stubborn slag to fall into the slag pit. After the initial cleaning, the second slag cleaning process is initiated, with two high-pressure flushing pipes with a diameter of φ50mm, one high-pressure air pipe, and multiple beating devices working in succession to further enhance the cleaning effect. Simultaneously, the inclined steel plate 8 under the slag hopper 2 collects the mud and water generated during flushing and the fallen slag particles, guiding them down the chute into the slag pit. When the lower horizontal section 10 of the vertical conveyor belt is running, the vertical lifting device 11 is on standby adjacent to the sump pit 9. The inclined steel plate 8 at the bottom of the vertical lifting sludge device and below the slag hopper of the lower horizontal section guides the falling sludge to the sump pit 9. The three-sided 900mm high retaining wall 12 effectively prevents the sludge from flowing back into the track area. After the sludge accumulates in the sump pit 9, the 60 excavator operates on the T-shaped steel platform 13 of the sinking section of the shield shaft enlargement end. This platform is supported by 200×200mm steel stirrups, and the top surface of the stirrups is covered with 10mm steel plates. The excavator cleans the sludge from the sump pit and the lower horizontal section 10 of the vertical conveyor belt to the slag hopper of the battery-powered truck, and then the gantry crane lifts it to the ground slag pit for unloading. The entire system works in coordination to complete the entire process of cleaning the sludge accumulated on the vertical conveyor belt.

[0051] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vertical belt conveyor slag cleaning system, comprising an upper horizontal section (1) of the vertical belt conveyor, a horizontal section slag hopper (2), a first high-pressure air flushing pipe (3), a first slag tamping device (4), a second high-pressure air flushing pipe (5), a second slag tamping device (6), a slag hopper tilting straight section (7), an inclined steel plate (8), a water collection pit (9), a lower horizontal section of the vertical belt conveyor (10), a vertical lifting device (11), a mud retaining wall (12), and a steel platform (13), characterized in that: The top of the lower horizontal section (10) of the vertical belt conveyor is fixedly connected to the top of the upper horizontal section (1) of the vertical belt conveyor. The slag hopper (2) of the horizontal section is set on one side of the upper horizontal section (1) of the vertical belt conveyor. The outside of the first high-pressure air flushing pipe (3) is set on the bottom side of the slag hopper (2) of the horizontal section. The outside of the first slag beating device (4) is fixedly connected to the inside side of the slag hopper (2) of the horizontal section. The outside of the second high-pressure air flushing pipe (5) is fixedly connected to the bottom of the slag hopper (2) of the horizontal section. The outside of multiple second slag beating devices (6) is fixedly connected to the upper horizontal section of the vertical belt conveyor. (1) At the bottom, the slag hopper flipping straight section (7) is set at the bottom of the first slag pounding device (4), the inclined steel plate (8) is fixedly connected below the slag hopper flipping straight section (7), the water collection pit (9) is opened at the bottom of the inclined steel plate (8), the lower horizontal section (10) of the vertical belt conveyor is at the bottom of the upper horizontal section (1) of the vertical belt conveyor, the vertical lifting device (11) is set on the right side of the slag hopper flipping straight section (7), the outside of the mud retaining wall (12) is fixedly connected to the outside side of the vertical lifting device (11), and the steel platform (13) is set above the water collection pit (9).

2. The vertical belt conveyor slag cleaning system according to claim 1, characterized in that, On the horizontal section (1) of the vertical belt conveyor, in the straight section (7) where the slag hopper flips, first set up two high-pressure flushing pipes parallel to the length direction of the slag hopper, and set up multiple high-pressure flushing nozzles on each pipe.

3. The vertical belt conveyor slag cleaning system according to claim 1, characterized in that, After the first row of high-pressure flushing pipes, the first high-pressure air flushing pipe (3) is set with multiple high-pressure air nozzles at the top. After the first high-pressure air flushing pipe (3), the first slag beating device (4) is set to flush and beat the slag into the slag pit.

4. The vertical belt conveyor slag cleaning system according to claim 1, characterized in that, An inclined steel plate (8) is installed below the slag hopper flipping straight section (7) of the horizontal section (1) of the vertical belt conveyor to collect and guide the mud and slag particles falling from the slag hopper (2) of the horizontal section to slide orderly into the slag pit. The vertical lifting device (11) is installed next to the water collection pit (9) adjacent to the sinking section of the expanded end of the shield tunnel. The volume of the sinking section of the expanded end is 424.97 m3.

5. The vertical belt conveyor slag cleaning system according to claim 1, characterized in that, The inclined steel plate (8) is set at the bottom of the vertical lifting sludge device and below the sludge bucket of the lower horizontal section to guide the falling sludge to slide orderly into the water collection pit (9). The T-shaped steel platform (13) is set in the sinking section of the shield shaft expansion end. A 10mm steel plate is laid on the steel platform (13). The excavator walks on the steel platform (13) to clean the sludge in the water collection pool and the lower horizontal section of the vertical belt conveyor. The battery truck carries a sludge bucket to load sludge and transports it to the hoisting port. The gantry crane lifts it out to the ground sludge pit to unload the sludge.

6. The vertical belt conveyor slag cleaning system according to claim 1, characterized in that, The inclined steel plate (8) set under the slag hopper guides the mud and slag to slide down the inclined chute, and the steel plate is welded to the crossbeam of the upper horizontal section steel column.

7. The vertical belt conveyor slag cleaning system according to claim 1, characterized in that, The top of the inclined steel plate (8) extends 1m beyond the crossbeam of the steel column, and the bottom of the steel plate extends to the bottom surface of the structure. The continuous butt joints between each steel plate are flat and welded to the crossbeam of the lower horizontal section. The side of the lower horizontal section is sealed with steel plates.

8. A vertical belt conveyor slag cleaning system according to claim 1, characterized in that, Mud retaining walls (12) are installed on three sides of the lower horizontal section of the vertical belt conveyor, using autoclaved aerated concrete blocks.

9. A vertical belt conveyor slag cleaning system according to claim 1, characterized in that, Each stirrup is equipped with two support legs. The bottom and top of the steel stirrup are fixed with φ14 steel bars, and the top surface of the stirrup is covered with a 10mm steel plate.

Images