Scraping and washing belt precipitation separation device and bulk material conveying system cleaning method
Patent Information
- Application Number
- CN202610702962.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-21
- Publication Date
- 2026-08-21
AI Technical Summary
当输送带绕过头部改向滚筒进入回程段后，若清理不及时，回程输送带承载面上的粘结物将沿途洒落，造成沿线撒煤，既导致物料损失，又污染环境
Smart Images
Figure CN122607731A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cleaning technology for bulk material conveying systems, and more specifically, to a scraping and washing belt sedimentation and separation device and a cleaning method for bulk material conveying systems. Background Technology
[0002] Currently, belt conveyors are widely used for conveying bulk materials. During the conveying process, fine particles, pulverized coal, slurry, and other adhesives inevitably adhere to the bearing surface of the conveyor belt. When the conveyor belt passes the head deflector roller and enters the return section, if it is not cleaned in time, the adhesives on the bearing surface of the return conveyor belt will spill along the way, causing coal spillage, resulting in material loss and environmental pollution. At the same time, these adhesives may also adhere to the surface of the return idlers and rollers, aggravating equipment wear, causing conveyor belt deviation, and in severe cases, even damaging the conveyor belt.
[0003] In related technologies, port bulk material conveying systems have high requirements for clean production and green environmental protection. However, the existing belt conveyor-equipped cleaning, washing, dust removal, collection, and sewage treatment devices often fail to meet these requirements and suffer from poor reliability and unstable operation. Summary of the Invention
[0004] In order to solve at least one of the above-mentioned technical problems, the first aspect of this application proposes a scraping and washing belt sedimentation and separation device.
[0005] A second aspect of this application also proposes a cleaning method for a bulk material conveying system.
[0006] In view of this, the first aspect of this application proposes a scraper-washing belt sedimentation separation device for a belt conveyor. The belt conveyor includes a return conveyor belt and a head redirecting roller. The scraper-washing belt sedimentation separation device includes: a scraper, disposed above the return conveyor belt, for cleaning the adhering material on the bearing surface of the return conveyor belt; a washing box, disposed downstream of the head redirecting roller, for rinsing and cleaning the bearing surface of the return conveyor belt after being cleaned by the scraper, the washing box including a first cleaner, a rinsing system and a coal slurry water outlet; a receiving plate, inclinedly disposed below the coal slurry water outlet; and a sedimentation separation box, disposed below the receiving plate, for multi-stage sedimentation separation of the coal slurry water generated during rinsing, the sedimentation separation box including a clean water outlet; the clean water outlet is connected to the rinsing system.
[0007] In conjunction with the first aspect, in some feasible embodiments, the scraper includes: a base; an electric push rod fixedly mounted on the base; a coupling structure, one end of which is connected to the output end of the electric push rod; a rotating shaft connected to the other end of the coupling structure; a lifting structure disposed on the rotating shaft; an idler frame disposed at the end of the lifting structure and driven by the lifting structure to swing upwards to lift the return conveyor belt; and a V-shaped scraper disposed above the return conveyor belt. When the idler frame lifts the return conveyor belt upwards to form a plane, the V-shaped scraper contacts the bearing surface of the return conveyor belt to scrape off the adhesive material adhering to the bearing surface.
[0008] In conjunction with the first aspect, in some feasible embodiments, the flushing system includes: a water supply pipeline; a first spray pipe connected to the water supply pipeline; a second spray pipe with a smaller diameter than the first spray pipe, one end of the second spray pipe being connected to the first spray pipe, and the other end being equipped with a row of nozzles, each nozzle spraying water in a straight line, the water curtain from all nozzles collectively covering the transverse width of the return conveyor belt; a booster pump located in the water supply pipeline and upstream of the first spray pipe; and a filter screen located at the inlet of the second spray pipe.
[0009] In conjunction with the first aspect, in some feasible embodiments, the belt washing box also includes at least two second cleaners located downstream of the nozzle along the direction of return conveyor belt operation, for scraping off the washed and moistened coal sludge and accumulated water.
[0010] In conjunction with the first aspect, in some feasible embodiments, the sedimentation separation tank includes: a first tank body disposed below the receiving plate for receiving coal slurry water guided by the receiving plate; a second tank body connected to the first tank body; and multi-stage stepped baffles disposed inside the first and second tank bodies, with the height of each baffle decreasing progressively along the flow direction of the coal slurry water to slow down the flow rate of the coal slurry water and accelerate sedimentation.
[0011] In conjunction with the first aspect, in some feasible embodiments, the sedimentation separation box also includes: a baffle plate disposed inside the first box, inside the second box, and between the first and second boxes, for further reducing the flow velocity of the coal slurry water.
[0012] In conjunction with the first aspect, in some feasible embodiments, the sedimentation separation tank further includes: a removable insulation panel covering the outer surfaces of the first and second tanks; and a pipe-type heating system including a heater disposed inside a clean water pipe located inside the sedimentation separation tank, the heater being used to heat the clean water inside the pipe, the heat being transferred to the interior of the sedimentation separation tank through the outer wall of the pipe.
[0013] In conjunction with the first aspect, in some feasible methods, the multi-stage stepped baffle is a four-stage stepped structure; the pipeline heating system is also equipped with a temperature switch and a level gauge, the temperature switch is used to control the water temperature to remain within a preset range, and the level gauge is used to control the liquid level in the pipeline to remain within a preset range.
[0014] In conjunction with the first aspect, in some feasible embodiments, the sedimentation separation box also includes: a sludge collection hopper, located at the bottom of the first and second boxes; and a sludge discharge valve, located at the outlet of the sludge collection hopper, for periodically discharging the settled coal sludge.
[0015] A second aspect of this application provides a cleaning method for a bulk material conveying system, employing a scraper washing belt sedimentation and separation device as described in any of the above technical solutions, comprising the following steps: The scraper installed above the return conveyor belt is used to initially remove the adhesive material adhering to the bearing surface of the return conveyor belt; After the return conveyor belt passes the head redirecting roller, the bearing surface of the return conveyor belt is washed by the belt washing box to wet and soak the remaining adhesive. Then, the coal slurry and accumulated water are scraped off by the first cleaner and at least two second cleaners. The scraped coal slurry water is discharged through the coal slurry water outlet of the belt washing box. The discharged coal slurry water is automatically guided to the sedimentation separation tank through the inclined receiving plate for multi-stage sedimentation separation, so that the coal slurry settles at the bottom of the tank. The separated clear water is returned to the washing system of the belt washing box for recycling through the clear water outlet of the sedimentation separation tank.
[0016] Compared with related technologies, this application has the following technical advantages: The scraper-washing belt sedimentation separation device provided in this application includes a scraper, a belt washing box, a receiving plate, and a sedimentation separation box. It achieves multiple functions such as scraping, washing, cleaning, recovery, diversion, and coal slurry-water sedimentation separation within a limited area, improving the overall operating efficiency of the equipment and providing strong support for the stable and reliable operation of the belt conveyor.
[0017] This device constitutes a complete cleaning solution for bulk material conveying systems, integrating cleaning and dust removal, flow guidance, and sedimentation separation. It can implement precise two-stage cleaning processes based on the particle size and adhesion degree of the material adhering to the conveyor belt. Simultaneously, it achieves an integrated layout of the conveyor belt rinsing spray device and various levels of cleaners, uniformly installed within the washing box, resulting in a compact structure and easy management. The water supply pipeline is equipped with key components such as a booster pump, heater, and filter screen to ensure stable water pressure, clean water quality, and suitable water temperature. Furthermore, leveraging site environmental conditions, the device can automatically guide the coal slurry water within the washing box, allowing it to flow smoothly into the sedimentation separation tank. The outer layer of the sedimentation separation tank features a removable insulation panel design, effectively preventing freezing in winter and ensuring normal equipment operation. Further, the device employs two sedimentation separation tanks working collaboratively, corresponding to the first and second tanks respectively. Each tank has multi-stage sedimentation separation capabilities, significantly improving the sedimentation separation effect.
[0018] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 A schematic diagram of the structure of a scraper washing belt sedimentation separation device according to one embodiment of this application is shown; Figure 2 This diagram illustrates the non-operating state of a coal scraper according to one embodiment of the present application. Figure 3 A schematic diagram of the working state of a coal scraper in one embodiment of this application is shown; Figure 4 A schematic diagram of a V-shaped sweeper according to one embodiment of this application is shown; Figure 5 This invention provides a schematic diagram of the structure of a first water spray pipe and a second water spray pipe in one embodiment of the present application. Figure 6 This is shown as a second schematic diagram of the structure of the first and second water spray pipes in one embodiment of this application; Figure 7 One of the structural schematic diagrams of a sedimentation separation tank in one embodiment of this application is shown; Figure 8 A second schematic diagram of the structure of a sedimentation separation tank in one embodiment of this application is shown; Figure 9 A schematic diagram of the structure of a multi-stage stepped baffle in one embodiment of this application is shown; Figure 10 The third schematic diagram shows the structure of a sedimentation separation tank in one embodiment of this application; Figure 11 A schematic diagram of the sedimentation separation tank in another embodiment of this application is shown; Figure 12 A schematic flowchart of a cleaning method for a bulk material conveying system according to one embodiment of this application is shown.
[0020] in, Figures 1 to 11 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100 Coal scraper, 102 Electric push rod, 103 Lifting structure, 104 Coupling structure, 105 Idler frame, 106 V-type cleaner, 108 Intermediate frame, 112 Water supply pipeline, 113 Booster pump, 114 First water spray pipe, 116 Second water spray pipe, 117 Nozzle, 118 First cleaner, 119 Second cleaner, 120 Receiving plate, 122 Filter screen, 130 Sedimentation separation tank, 132 First tank, 134 Second tank, 136 Clean water outlet, 138 Drainage system, 142 Baffle, 144 Guide plate, 146 Heater, 148 Level gauge, 150 Temperature switch, 152 Solenoid valve, 160 Adhesive, 170 Ground, 200 Conveyor belt, 210 Head redirecting roller. Detailed Implementation
[0021] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0022] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0023] The following reference Figures 1 to 12 This application describes a scraper washing belt sedimentation separation device and a cleaning method for a bulk material conveying system according to some embodiments of the present application.
[0024] like Figure 1 and Figure 10As shown, the first aspect of this application proposes a scraper-washing belt sedimentation separation device for a belt conveyor. The belt conveyor includes a return conveyor belt 200 and a head redirecting roller 210. The scraper-washing belt sedimentation separation device includes: a scraper 100, disposed above the return conveyor belt 200, for cleaning the adhering material 160 on the bearing surface of the return conveyor belt 200; a washing box, disposed downstream of the head redirecting roller 210, for rinsing and cleaning the bearing surface of the return conveyor belt 200 after being cleaned by the scraper 100, the washing box including a first cleaner 118, a rinsing system and a coal slurry water outlet; a receiving plate 120, inclinedly disposed below the coal slurry water outlet; and a sedimentation separation box 130, disposed below the receiving plate 120, for multi-stage sedimentation separation of the coal slurry water generated during rinsing, the sedimentation separation box 130 including a clean water outlet 136; the clean water outlet 136 is connected to the rinsing system.
[0025] The scraper-washing and sedimentation separation device provided in this application is used for belt conveyors, including a scraper 100, a washing box, a receiving plate 120, and a sedimentation separation box 130. The scraper 100 is positioned above the return conveyor belt 200 and can promptly clean up large particles 160 such as accumulated coal and snow from the bearing surface of the return conveyor belt 200, transferring the particles 160 to the ground 170 on both sides of the conveyor for initial collection. The washing box is located downstream of the head redirecting roller 210. The washing system, in conjunction with the first sweeper 118, can further wash and clean the cleaned conveyor belt 200. This dual cleaning mechanism ensures that the conveyor belt 200 is further cleaned, reducing equipment wear and malfunctions caused by material residue and extending the service life of the conveyor belt 200.
[0026] The sedimentation and separation tank 130 performs multi-stage sedimentation and separation of the coal slurry water generated during washing, realizing the recycling of water resources. The clean water outlet 136 is connected to the washing system of the belt washing box, and the separated clean water is reused to wash the conveyor belt 200, which greatly reduces water consumption, lowers production costs, and avoids environmental pollution caused by the indiscriminate discharge of coal slurry water.
[0027] The receiving plate 120 is inclined and positioned below the coal slurry outlet, smoothly guiding the coal slurry into the sedimentation separation tank 130, preventing overflow and ensuring stable operation of the entire device. The scraping and washing belt sedimentation separation device provided in this application features a compact and rational layout of components, making full use of space. Within a limited area, it achieves multiple functions such as scraping, washing, cleaning, recovery, flow guidance, and coal slurry sedimentation separation, improving overall equipment operating efficiency and providing strong support for the stable and reliable operation of the belt conveyor. A filter screen 122 is provided at the end of the receiving plate 120 near the sedimentation separation tank 130, which can perform preliminary filtration of the coal slurry.
[0028] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments provided in this application, the scraper 100 includes: a base; an electric push rod 102, fixedly mounted on the base; a coupling structure 104, one end of which is connected to the output end of the electric push rod 102; a rotating shaft, connected to the other end of the coupling structure 104; a lifting structure 103, disposed on the rotating shaft; a roller frame 105, disposed at the end of the lifting structure 103, driven by the lifting structure 103 to swing upwards, used to lift the return conveyor belt 200 upwards; and a V-shaped cleaner 106, disposed above the return conveyor belt 200; when the roller frame 105 lifts the return conveyor belt 200 upwards to form a plane, the V-shaped cleaner 106 contacts the bearing surface of the return conveyor belt 200 to scrape off the adhesive 160 attached to the bearing surface.
[0029] In this embodiment, the scraper 100 includes a base, an electric push rod 102, a coupling structure 104, a rotating shaft, a lifting structure 103, an idler frame 105, and a V-shaped scraper 106. The electric push rod 102 drives the coupling structure 104 to rotate the rotating shaft, and the lifting structure 103 can move the idler frame 105 up and down with the rotation of the rotating shaft. When the idler frame 105 rises and lifts the return conveyor belt 200 to form a plane, the V-shaped scraper 106, fixed above the return conveyor belt 200, can closely adhere to the bearing surface of the return conveyor belt 200. The V-shaped structure of the V-shaped scraper 106 increases the contact area and scraping angle with the conveyor belt 200, which can powerfully and efficiently scrape away large particles 160 adhering to the bearing surface, effectively preventing the long-term accumulation of large particles 160 from causing wear on the conveyor belt 200, ensuring the normal operation of the conveyor belt 200, and extending its service life. The coal scraper 100 also includes an intermediate frame 108, and the rotating shaft is disposed on the intermediate frame 108.
[0030] The electric push rod 102 serves as the power source to automatically raise and lower the idler frame 105, thereby controlling the contact and separation of the V-shaped sweeper 106 from the conveyor belt 200. This eliminates the need for manual operation, improving work efficiency, reducing labor intensity, and minimizing operational errors caused by human factors, thus ensuring the stability and reliability of the cleaning operation.
[0031] like Figure 1 , Figure 5 and Figure 6As shown, in some embodiments provided in this application, the flushing system includes: a water supply pipe 112; a first spray pipe 114 connected to the water supply pipe 112; a second spray pipe 116, the diameter of which is smaller than that of the first spray pipe 114, one end of which is connected to the first spray pipe 114, and the other end of which is equipped with a row of nozzles 117, each nozzle 117 having a spray surface in a straight line, and the water curtain of all nozzles 117 covering the transverse width of the return conveyor belt 200; a booster pump 113 located in the water supply pipe 112 and upstream of the first spray pipe 114; and a filter screen located at the inlet of the second spray pipe 116.
[0032] In this embodiment, the flushing system includes a water supply pipe 112, a first spray pipe 114, a second spray pipe 116, a booster pump 113, and a filter screen. The first spray pipe 114 is connected to the water supply pipe 112, providing a basic water flow for flushing. The second spray pipe 116 has a smaller diameter than the first spray pipe 114, and one end is connected to the first spray pipe 114, while the other end is equipped with a row of nozzles 117. Each nozzle 117 sprays water in a straight line, and the water curtain from all nozzles 117 covers the transverse width of the return conveyor belt 200, enabling all-round, thorough flushing of the conveyor belt 200 and ensuring effective flushing. Moreover, by using the smaller diameter second spray pipe 116, the amount of residual water that needs to be discharged when the system is shut down is significantly reduced, and the clogging of the nozzles 117 is also significantly reduced, especially during winter use, where this advantage is even more pronounced.
[0033] The booster pump 113 is installed in the water supply pipeline 112 and is located upstream of the first water spray pipe 114. It can increase the water pressure, so that the water flow can impact the dirt on the conveyor belt 200 with greater force, effectively remove stubborn coal sludge and other impurities, and improve the washing efficiency.
[0034] The filter screen is installed at the inlet of the second water spray pipe 116. It can filter out large particulate impurities in the water, prevent them from entering the nozzle 117 and causing blockage, ensure the normal operation of the nozzle 117, extend the service life of the equipment, and at the same time ensure the cleanliness of the rinsing water and improve the rinsing quality.
[0035] like Figure 1 As shown, in some embodiments provided in this application, the sedimentation separation box 130 further includes at least two second cleaners 119 located downstream of the nozzle 117 along the running direction of the return conveyor belt 200, for scraping off the washed and wetted coal slime and accumulated water.
[0036] In this embodiment, at least two second cleaners 119 are located downstream of the nozzle 117 along the running direction of the return conveyor belt 200. They can scrape off the coal sludge and accumulated water after being washed and moistened, further clean the surface of the conveyor belt 200, reduce residual moisture, reduce the risk of bacteria growth and corrosion of the conveyor belt 200 due to moisture, and ensure the normal operation of the conveyor belt 200.
[0037] like Figure 7 , Figure 9 , Figure 9 , Figure 10 and Figure 11 As shown, in some embodiments provided in this application, the sedimentation separation tank 130 includes: a first tank 132, disposed below the receiving plate 120, for receiving coal slurry water guided by the receiving plate 120; a second tank 134, communicating with the first tank 132; and multi-stage stepped baffles 142, disposed inside the first tank 132 and the second tank 134, with the height of each baffle 142 decreasing gradually along the flow direction of the coal slurry water, for slowing down the flow rate of the coal slurry water to accelerate sedimentation.
[0038] In this embodiment, the sedimentation separation tank 130 includes a first tank 132, a second tank 134, and a multi-stage stepped baffle 142. The first tank 132 is located below the receiving plate 120 and can accurately receive the coal slurry water diverted by the receiving plate 120, ensuring that all the coal slurry water enters the sedimentation separation system, avoiding overflow that would cause environmental pollution and resource waste, and providing a stable foundation for subsequent sedimentation separation work.
[0039] The second chamber 134 is connected to the first chamber 132, which increases the overall volume of the sedimentation separation chamber 130, providing more sufficient sedimentation space for coal slurry water, which is conducive to the full sedimentation of coal slurry particles and improves the sedimentation separation effect.
[0040] Multi-stage stepped baffles 142 are installed inside the first chamber 132 and the second chamber 134, with the height of each baffle 142 decreasing progressively along the flow direction of the coal slurry water. This effectively slows down the flow rate of the coal slurry water, making the water flow more stable, creating favorable conditions for the sedimentation of coal slurry particles, accelerating the sedimentation process, and improving sedimentation efficiency. Simultaneously, the multi-stage baffles 142 also increase the water flow path, further extending the sedimentation time of the coal slurry particles, ensuring more thorough sedimentation, achieving effective separation of coal slurry water and reuse of clean water, reducing production costs, and improving economic benefits. Figure 9 As shown, arrow E points in the direction of the coal slurry water flow.
[0041] like Figure 8 As shown, in some embodiments provided in this application, the sedimentation separation tank 130 further includes a guide plate 144, which is disposed inside the first tank 132, inside the second tank 134, and between the first tank 132 and the second tank 134, for further reducing the flow rate of coal slurry water.
[0042] In this embodiment, the guide plate 144 is disposed inside the first box 132, the second box 134 and between them, forming a multi-region, multi-level flow rate control system, which can further refine the control of the coal slurry water flow rate. It works in conjunction with the multi-stage stepped baffle 142 to make the flow rate of the coal slurry water more precisely adjusted in different regions, ensuring that the water flows at a low and stable speed, creating ideal conditions for the sedimentation of coal slurry particles.
[0043] The further reduction in flow rate prolongs the residence time of coal slime particles in water, allowing the particles more time to settle to the bottom of the tank, effectively improving the efficiency and quality of sedimentation and separation, making the settled water clearer, reducing the coal slime content in the water, and enhancing the effect of water resource recycling.
[0044] The reasonable layout of the guide plate 144 can also enhance the stability of the internal structure of the sedimentation separation box 130, make the flow of coal slurry water in the box more orderly, avoid uneven local stress on the box caused by water flow turbulence, extend the service life of the sedimentation separation box 130, and reduce the maintenance cost of the equipment.
[0045] like Figure 11 As shown, in some embodiments provided in this application, the sedimentation separation tank 130 further includes: a removable insulation board covering the outer surface of the first tank 132 and the second tank 134; and a pipeline heating system including a heater 146 disposed inside a clean water pipeline located inside the sedimentation separation tank 130, the heater 146 being used to heat the clean water in the pipeline, and the heat being transferred to the interior of the sedimentation separation tank 130 through the outer wall of the pipeline.
[0046] In this embodiment, the sedimentation separation tank 130 also includes a removable insulation panel and a piped heating system. The removable insulation panel covers the exterior of the first tank body 132 and the second tank body 134, effectively reducing heat exchange between the tank body and the external environment and slowing down heat loss. In cold environments, it can maintain a stable temperature inside the tank, preventing the coal slurry water from freezing due to excessively low temperatures, which would affect the sedimentation separation process. It also reduces the additional energy consumed to maintain the temperature, thus achieving energy conservation. Furthermore, the removable insulation panel facilitates equipment inspection and maintenance.
[0047] The heater 146 of the pipeline heating system is installed inside the clean water pipeline, which can directly heat the clean water in the pipeline. The heat transfer path is short and the efficiency is high. After heating, the heat of the clean water is transferred to the interior of the sedimentation separation tank 130 through the outer wall of the pipeline, further increasing the temperature inside the tank. This helps to accelerate the sedimentation speed of coal slime particles and improve the sedimentation separation efficiency. Especially under low temperature conditions, it can ensure the normal operation of the sedimentation separation tank 130, ensure the effective separation of clean water and coal slime, and realize the recycling of water resources.
[0048] like Figure 9 and Figure 11 As shown, in some embodiments provided in this application, the multi-stage stepped baffle 142 has a four-stage stepped structure; the pipeline heating system is also provided with a temperature switch 150 and a level gauge 148. The temperature switch 150 is used to control the water temperature to remain within a preset range, and the level gauge 148 is used to control the liquid level in the pipeline to remain within a preset range.
[0049] In this embodiment, the four-stage stepped structure can precisely control the flow rate of the coal slurry water. The 142mm height difference between each baffle gradually slows down the water flow, providing more time and space for the coal slurry particles to settle, allowing particles of different sizes to settle fully, improving the sedimentation and separation effect, making the water clearer, and reducing the burden of subsequent treatment.
[0050] The pipeline heating system is equipped with a temperature switch 150 for precise water temperature control. It automatically heats when the water temperature is below the preset value and stops heating when it exceeds the preset value, ensuring the water temperature remains stable within the optimal range. This guarantees efficient sedimentation and separation while preventing energy waste. A level gauge 148 monitors the liquid level in the pipeline in real time, maintaining the level within the preset range.
[0051] By optimizing the sedimentation and heating processes, the water resource recycling rate was improved, and production costs were reduced. At the same time, stable water temperature and level control reduced equipment failure rates and extended equipment lifespan, bringing significant economic and environmental benefits to the company.
[0052] In some embodiments provided in this application, the sedimentation separation box 130 further includes: a sludge collection hopper, disposed at the bottom of the first box 132 and the second box 134; and a sludge discharge valve, disposed at the outlet of the sludge collection hopper, for periodically discharging the settled coal sludge.
[0053] In this embodiment, the sedimentation separation tank 130 also includes a sludge collection hopper and a sludge discharge valve. The sludge collection hopper is located at the bottom of the first tank 132 and the second tank 134, and can be funnel-shaped with a wider top and narrower bottom, which can naturally guide the settled coal sludge to the bottom. This makes the distribution of coal sludge within the tank more concentrated, avoiding coal sludge residue in corners or large areas of the tank, improving sludge collection efficiency, and ensuring that the sedimentation separation tank 130 can fully exert its sedimentation function to effectively separate coal sludge from clean water.
[0054] The sludge discharge valve is installed at the outlet of the sludge collection hopper. Operators can open the valve periodically according to actual production conditions to smoothly discharge the coal sludge accumulated in the hopper. This achieves controllability and convenience in the sludge discharge process, eliminating the need for complicated operating procedures, reducing the workload and difficulty of manual cleaning, and also reducing the risk of equipment damage that may be caused by manual cleaning.
[0055] By timely discharging coal slurry, excessive accumulation of coal slurry in the box is prevented from affecting the sedimentation effect and normal operation of the equipment, ensuring that the sedimentation separation box 130 can work continuously and stably, and improving the reliability and stability of the entire belt conveyor system.
[0056] like Figure 12 As shown, the second aspect of this application proposes a cleaning method for a bulk material conveying system, employing a scraper washing belt sedimentation and separation device as described in any of the above embodiments, comprising the following steps: S302: The scraper installed above the return conveyor belt is used to initially clean the adhesive material adhering to the bearing surface of the return conveyor belt; S304: After the return conveyor belt passes the head redirecting roller, the bearing surface of the return conveyor belt is washed by the belt washing box to wet and soak the remaining adhesive. Then, the coal slurry and accumulated water are scraped off by the first cleaner and at least two second cleaners. The scraped coal slurry water is discharged through the coal slurry water outlet of the belt washing box. S306: The discharged coal slurry water is automatically guided to the sedimentation separation tank through the inclined receiving plate for multi-stage sedimentation separation, so that the coal slurry settles at the bottom of the tank. The separated clear water is returned to the washing system of the belt washing box for recycling through the clear water outlet of the sedimentation separation tank.
[0057] The cleaning method for bulk material conveying systems provided in this application first uses a scraper to preliminarily clean the adhesive material on the bearing surface of the return conveyor belt, removing most of the large particles and easily cleanable impurities, thus reducing the burden of subsequent cleaning. After the return conveyor belt passes the head deflector roller, it is rinsed by a belt washing box to wet and saturate the remaining adhesive material. Then, a first scraper and at least two second scrapers scrape off the coal sludge and accumulated water. This multi-step coordinated approach achieves comprehensive and deep cleaning, effectively removing various stubborn stains from the conveyor belt.
[0058] The discharged coal slurry water is automatically guided to the sedimentation and separation tank via an inclined receiving plate for multi-stage sedimentation and separation. The coal slurry settles at the bottom of the tank, while the separated clear water is returned to the washing system of the belt washing box for recycling through the clear water outlet of the sedimentation and separation tank. This process reduces water waste, lowers cleaning costs, and avoids environmental pollution caused by the indiscriminate discharge of coal slurry water, which is in line with the concept of green environmental protection.
[0059] The cleaning method for bulk material conveying systems provided in this application has a high degree of automation, reduces manual intervention, lowers the difficulty of operation and the risk of human error, ensures the stability and continuous operation of the cleaning work of the bulk material conveying system, helps to improve the overall operating efficiency and reliability of the conveying system, and extends the service life of the equipment.
[0060] In practical applications, the scraper 100 also includes a pressure sensor and a controller. The pressure sensor is located on the contact surface between the V-shaped scraper 106 and the return conveyor belt 200. The controller is electrically connected to both the pressure sensor and the electric push rod 102. The controller controls the lifting and lowering stroke of the electric push rod 102 based on the signal feedback from the pressure sensor, ensuring that the pressure of the V-shaped scraper 106 on the return conveyor belt 200 is maintained within a preset range. This closed-loop control of the electric push rod 102 by the pressure sensor and controller automatically maintains the pressure of the V-shaped scraper 106 on the return conveyor belt 200 within the preset range, preventing damage to the conveyor belt 200 due to excessive pressure or incomplete cleaning due to insufficient pressure. This effectively extends the lifespan of both the conveyor belt 200 and the scraper, ensuring stable and reliable scraping performance.
[0061] The belt washing box also includes an anti-clogging component for nozzles 117. This component includes a clearing needle located inside the second water spray pipe 116 or at the inlet of nozzle 117, and a miniature actuator that drives the clearing needle to reciprocate. This is used to periodically remove coal sludge particles deposited inside nozzle 117. The periodic removal of coal sludge particles by the reciprocating motion of the clearing needle effectively prevents nozzle 117 clogging, ensuring continuous and uniform water curtain coverage of the conveyor belt 200, maintaining a stable washing effect, reducing the frequency of manual downtime for cleaning, and significantly improving the operational reliability of the belt washing box.
[0062] like Figures 1 to 12 As shown in the specific embodiments, this application provides a scraping and washing belt sedimentation separation device and a cleaning method for a bulk material conveying system.
[0063] The first stage of cleaning the adhering material 160 uses a relatively rough method, employing a scraper 100 to remove large particles, not aiming for complete cleaning. The scraper 100 is driven and controlled by an electric push rod 102 and mainly includes the electric push rod 102, a coupling structure 104, an idler frame 105, and a V-shaped cleaner 106. Its working principle is as follows: the electric push rod 102 pushes the conveyor belt 200 lifting structure 103. After the conveyor belt 200 is lifted, the belt surface forms a plane, which contacts the V-shaped cleaner 106 on it. The V-shaped cleaner 106 can then remove the large particles of the adhering material 160 remaining on the belt surface, causing the adhering material 160 to be cleaned onto the ground 170 on both sides of the conveyor, achieving the purpose of initial collection.
[0064] The second step in cleaning the adhesive residue 160 mainly involves rinsing and scraping the bearing surface of the conveyor belt 200. This cleaning method is primarily achieved through a belt washing box. A booster pump 113 is installed at the end of the water supply pipeline 112 to increase and control the water pressure in the spray pipe, overcoming problems of low and unstable water pressure. The maximum water pressure can reach 1.6 MPa. A spray pipe is installed at the end of the water supply pipeline 112, and a filter screen is installed at the inlet section of the spray pipe to filter impurities in the water and prevent clogging of the nozzles 117. A row of nozzles 117, typically 5 to 8, is installed on the spray pipe. Under the action of the booster pump 113, the water flow and the water sprayed from the nozzles 117 work together to enhance the rinsing effect. The sprayed water forms a straight line, covering the transverse surface of the conveyor belt 200. The spray volume is determined by the water pressure and the size of the nozzles 117. The water sprayed from nozzle 117 falls on the belt surface at the front end of the first sweeper, washing away some of the adhesive 160 and wetting and soaking it, preparing it for scraping by subsequent sweepers. In addition to the water spray pipes mentioned above, the belt washing box is also equipped with the two subsequent sweepers.
[0065] The main components of the sedimentation separation tank 130 include the first tank 132, the second tank 134, the receiving plate 120 for the washing wastewater to flow in from the washing box, the sedimentation tank, the intelligent heating system, and the coal-water separation device.
[0066] The coal slurry water collected after washing the conveyor belt is automatically guided through the receiving plate 120 to the sedimentation and separation tank 130, which is located at a lower elevation. The sedimentation and separation tank 130 is equipped with a removable insulation board on the outside for convenient daily maintenance of the tank body and insulation.
[0067] The sedimentation separation tank 130 accelerates the sedimentation of coal slurry water through two sedimentation tanks, and further accelerates the sedimentation using a four-stage stepped baffle 142. A guide plate 144 is installed inside the two tanks and between the two tanks, with a height difference of 100mm between the two ends of the guide plate 144, which reduces the flow velocity of the coal slurry water, thereby accelerating the sedimentation of the coal slurry. The first-stage sedimentation can settle 70% of the washed coal slurry; after four sedimentation stages, the sedimentation effect can reach over 95%, and the clean water is recycled through the drainage system 138.
[0068] The pipeline heating system features rapid heating, energy efficiency, environmental friendliness, convenient maintenance, high reliability, and immunity to coal slime effects. Its working principle is as follows: Heater 146 inside the pipeline heats clean water, which then transfers heat through the pipeline surface, raising the internal temperature of the settling tank. Water temperature and flow are controlled by a level gauge 148 and a temperature switch 150. In winter, the water temperature is set to 30℃, and the minimum liquid level in the heating pipeline is 200mm. Through an electrical control circuit, when the water temperature is below 30℃, the pipeline heater 146 begins heating; when it is above 40℃, heating stops, thus maintaining the temperature inside the settling tank and preserving the fluidity of the sediment. Simultaneously, the level switch sets the liquid level in the pipeline. When the liquid level is above 200mm, water addition stops; when it is below 50mm, the pipeline solenoid valve 152 is opened via electrical control to allow water to enter the pipeline. This system is highly adaptable and significantly improves reliability, safety, and maintainability compared to traditional insulation systems.
[0069] The scraping, washing, sedimentation, and separation device involved in this application constructs a complete environmentally friendly organic cleaning system for conveyors, covering all aspects such as scraping, washing, cleaning, recycling, diversion, and coal slurry water sedimentation and separation on the 200 bearing surface of the conveyor belt. All aspects work closely together and coordinate to provide comprehensive protection for the clean operation of the belt conveyor.
[0070] In actual operation, the belt surface of a belt conveyor often accumulates a large amount of coal deposits, rain and snow, and other adhesive substances 160. If these adhesive substances 160 directly enter the sedimentation and separation tank 130 in large quantities, it will not only increase the difficulty of processing but may also affect the normal operation of the equipment. Therefore, this application sets up multiple cleaning steps.
[0071] After the first cleaning stage, the number of large particles 160 adhering to the conveyor belt 200 is significantly reduced. When the conveyor belt 200 runs to the head redirecting roller 210, the scraper washing and sedimentation separation device starts to function. The scraper washing and sedimentation separation device includes a scraper 100, a water spray pipe, a booster pump 113, a filter screen, a washing box, a sedimentation separation box 130, a receiving plate 120, and a cleaner.
[0072] The first cleaner 118 is a polyurethane cleaner, and the second cleaner 119 is an alloy cleaner. Their working principle is as follows: A flushing system is installed on the first-stage polyurethane cleaner, using high-pressure water to initially flush the conveyor belt 200, further removing residual adhesive material 160. Subsequently, the second and third-stage alloy cleaners scrape off the coal sludge and accumulated water from the conveyor belt 200. The scraped-off coal sludge and washing water flow orderly into the sedimentation separation tank 130 through the receiving plate 120. Inside the sedimentation separation tank 130, a specific sedimentation separation process achieves effective separation of coal and water, thereby achieving the purpose of recovering coal sludge and clean water.
[0073] This application enables the conveying system to operate in all weather conditions under clean and environmentally friendly conditions. Regardless of seasonal changes, it ensures normal equipment operation, effectively solving many problems associated with the cleaning process of traditional belt conveyors, and providing a more reliable and efficient solution for production and operation in related industries.
[0074] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0075] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0076] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A scraping and washing belt sedimentation and separation device for use in a belt conveyor, the belt conveyor comprising a return conveyor belt and a head redirecting roller, characterized in that, The scraper washing belt sedimentation separation device includes: A coal scraper, positioned above the return conveyor belt, is used to clean the adhesive material on the bearing surface of the return conveyor belt. A belt washing box, located downstream of the head redirecting roller, is used to wash and clean the bearing surface of the return conveyor belt after it has been cleaned by the coal scraper. The belt washing box includes a first scraper, a washing system, and a coal slurry water outlet. The receiving plate is inclinedly positioned below the coal slurry water outlet; A sedimentation separation tank is located below the receiving plate and is used for multi-stage sedimentation separation of coal slurry water generated during washing. The sedimentation separation tank includes a clean water outlet, which is connected to the washing system.
2. The scraper washing belt sedimentation separation device according to claim 1, characterized in that, The coal scraper includes: Base; An electric push rod is fixedly installed on the base; A coupling structure, one end of which is connected to the output end of the electric push rod; A rotating shaft is connected to the other end of the connecting shaft structure; A lifting structure is provided on the rotating shaft; The idler frame is located at the end of the lifting structure and is driven by the lifting structure to swing upwards to lift the return conveyor belt. A V-shaped cleaner is positioned above the return conveyor belt. When the idler frame lifts the return conveyor belt upwards to form a flat surface, the V-shaped cleaner contacts the bearing surface of the return conveyor belt to scrape off the adhesive substances adhering to the bearing surface.
3. The scraper washing belt sedimentation separation device according to claim 1, characterized in that, The flushing system includes: Water supply pipelines; The first water spray pipe is connected to the water supply pipeline; The second water spray pipe has a smaller diameter than the first water spray pipe. One end of the second water spray pipe is connected to the first water spray pipe, and the other end is equipped with a row of nozzles. The water spray surface of each nozzle is in a straight line, and the water curtain of all nozzles covers the transverse width of the return conveyor belt. A booster pump is installed in the water supply pipeline and located upstream of the first spray pipe; A filter screen is installed at the inlet of the second water spray pipe.
4. The scraper washing belt sedimentation separation device according to claim 3, characterized in that, The washing box also includes: At least two second cleaners are located downstream of the nozzle along the direction of travel of the return conveyor belt, and are used to scrape off the washed and wet coal sludge and accumulated water.
5. The scraper washing belt sedimentation separation device according to claim 1, characterized in that, The sedimentation separation tank includes: The first box is located below the receiving plate and is used to receive the coal slurry water diverted by the receiving plate. The second enclosure is connected to the first enclosure; Multi-stage stepped baffles are installed inside the first and second boxes, with the height of each baffle decreasing gradually along the flow direction of the coal slurry water, in order to slow down the flow rate of the coal slurry water and accelerate sedimentation.
6. The scraper washing belt sedimentation separation device according to claim 5, characterized in that, The sedimentation separation tank also includes: A flow deflector is disposed inside the first box, inside the second box, and between the first box and the second box to further reduce the flow velocity of the coal slurry water.
7. The scraper washing belt sedimentation separation device according to claim 5, characterized in that, The sedimentation separation tank also includes: A removable insulation panel is used to cover the outer surfaces of the first and second boxes; A pipeline heating system includes a heater installed inside a clean water pipeline located inside a sedimentation separation tank. The heater is used to heat the clean water inside the pipeline, and the heat is transferred to the interior of the sedimentation separation tank through the outer wall of the pipeline.
8. The scraper washing belt sedimentation separation device according to claim 7, characterized in that, The multi-stage stepped baffle has a four-stage stepped structure; the pipeline heating system is also equipped with a temperature switch and a level gauge. The temperature switch is used to control the water temperature to remain within a preset range, and the level gauge is used to control the liquid level in the pipeline to remain within a preset range.
9. The scraper washing belt sedimentation separation device according to claim 5, characterized in that, The sedimentation separation tank also includes: A mud collection hopper is located at the bottom of the first box and the second box; A sludge discharge valve is installed at the outlet of the sludge collection hopper and is used to periodically discharge settled coal sludge.
10. A cleaning method for a bulk material conveying system, characterized in that, The scraper washing belt sedimentation separation device according to any one of claims 1 to 9 includes the following steps: The scraper installed above the return conveyor belt is used to initially remove the adhesive material adhering to the bearing surface of the return conveyor belt; After the return conveyor belt passes the head redirecting roller, the bearing surface of the return conveyor belt is washed by the belt washing box to wet and soak the remaining adhesive. Then, the coal slurry and accumulated water are scraped off by the first cleaner and at least two second cleaners. The scraped coal slurry water is discharged through the coal slurry water outlet of the belt washing box. The discharged coal slurry water is automatically guided to the sedimentation separation tank through the inclined receiving plate for multi-stage sedimentation separation, so that the coal slurry settles at the bottom of the tank. The separated clear water is returned to the washing system of the belt washing box for recycling through the clear water outlet of the sedimentation separation tank.