High-temperature material transportation device and transportation method

Abstract

The invention provides a high-temperature material transportation device and method, and belongs to the technical field of material transportation. The high-temperature material transportation device comprises a feeding hopper, a transportation chain plate, a surge bin and a switching assembly. A blanking port is formed in the lower end of the feeding funnel, and a distributing port is formed in one side of the feeding funnel; the conveying chain plate is arranged below the blanking opening; the surge bin is located on one side of the feeding hopper, and a feeding port is formed in one side of the surge bin; and the switching assembly comprises a connecting channel and a switching unit, one end of the connecting channel communicates with the material distributing opening, the other end of the connecting channel communicates with the feeding opening, the switching unit is located in the feeding hopper, and the switching unit communicates with the material distributing opening and the discharging opening in a switching mode so that the high-temperature materials can be conveyed to the buffering bin or the conveying chain plate through the connecting channel. According to the high-temperature material conveying device, the waste heat utilization efficiency is improved, and the flexibility and adaptability of a conveying system are enhanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of material transportation, and more specifically, relates to a high-temperature material transportation device and a transportation method. Background Art

[0002] In modern industrial production, the shaft furnace pelletizing process is an important link in the iron and steel industry, and the transportation of high-temperature solid materials plays a key role in this process. At present, most of the high-temperature solid material transportation methods adopt chain plate transportation. With its relatively simple structure and strong load-bearing capacity, this transportation method has been widely used in the industry.

[0003] However, with the continuous improvement of the requirements for the waste heat utilization efficiency of shaft furnace pellets, the limitations of the traditional chain plate transportation method have gradually emerged. On the one hand, the heat exchange efficiency of chain plate transportation is relatively low, making it difficult to fully recover the waste heat carried by high-temperature materials, resulting in a large amount of heat energy waste, which does not conform to the development trend of energy conservation, emission reduction, and efficient utilization of resources. On the other hand, the chain plate transportation system is complex in operation and low in switching efficiency when switching paths, and it cannot quickly and flexibly achieve the effective switching between the new transportation path and the original path, making it difficult to meet the diverse and dynamic requirements in the production process, greatly restricting the overall efficiency and economic benefits of the shaft furnace pelletizing production process. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-temperature material transportation device to improve the waste heat utilization efficiency and enhance the flexibility and adaptability of the transportation system.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: to provide a high-temperature material transportation device, including: A feeding hopper, a blanking port is provided at the lower end of the feeding hopper, and a material dividing port is opened on one side of the feeding hopper; A transportation chain plate, which is arranged below the blanking port; A buffer bin, which is located on one side of the feeding hopper, and a feeding port is opened on one side of the buffer bin; A switching component, the switching component includes a connection channel and a switching unit. One end of the connection channel communicates with the material dividing port, the other end of the connection channel communicates with the feeding port, the switching unit is located in the feeding hopper, and the switching unit switches to communicate the material dividing port and the blanking port to transport high-temperature materials to the buffer bin or to the transportation chain plate through the connection channel.

[0006] In a possible implementation manner, a control valve is provided on one side of the buffer bin, and the control valve is located at the feeding port for controlling the flow rate of high-temperature materials passing through the feeding port.

[0007] In a possible implementation, the control valve is a slide valve, and the slide valve is arranged in the feed inlet.

[0008] In a possible implementation, the buffer bin is located below the feed hopper, and the connecting channel slopes downward from the material distribution port to the feed inlet.

[0009] In a possible implementation, the switching unit is a three-way switching valve, and the three-way switching valve is located in the inner cavity of the feed hopper.

[0010] In a possible implementation, a height detection unit is arranged in the feed hopper, and the height detection unit is used to detect the height of the high-temperature material in the feed hopper.

[0011] In a possible implementation, a flow detection unit is arranged in the connecting channel, and the flow detection unit is used to detect the flow rate of the high-temperature material in the connecting channel.

[0012] The beneficial effect of a high-temperature material transportation device provided by the present invention is that: compared with the prior art, when waste heat recovery of high-temperature materials is required, the switching unit acts to connect the material distribution port. After the high-temperature material enters the feed hopper, it no longer directly falls from the blanking port, but enters the connecting channel through the material distribution port, and then enters the buffer bin along the channel. A heat exchange tube can be arranged inside the buffer bin, and a coolant is passed through the heat exchange tube. The heat of the high-temperature material is transferred to the coolant, and the heated coolant flows out of the buffer bin for other technological processes, realizing waste heat recovery and effectively improving the waste heat utilization efficiency.

[0013] In addition, when the production demand changes, the transportation path can be adjusted by controlling the switching unit. If it is necessary to transport the material to the buffer bin, the switching unit connects the material distribution port, and the material will flow into the buffer bin; if waste heat recovery is not required or the material needs to be directly transported to other processes, the switching unit connects the blanking port, and the material directly falls from the blanking port onto the lower transportation chain plate and is transported to the designated location by the transportation chain plate. This operation method is simple and fast, greatly enhancing the flexibility and adaptability of the transportation system, being able to well meet the diverse and dynamic requirements in the production process, and improving the overall efficiency and economic benefits of the shaft furnace pellet production process.

[0014] The present invention also provides a high-temperature material transportation method, which uses the above-mentioned high-temperature material transportation device, and includes the following steps: S1: The bucket elevator continuously adds high-temperature materials to the feed hopper until the high-temperature materials in the feed hopper reach a preset height H1; S2: The switching unit closes the blanking port of the feed hopper and opens the material distribution port, the transportation chain plate is in a stopped state, and the high-temperature material enters the buffer bin through the connecting channel; S3: When the high-temperature material entering the feed inlet through the connection channel exceeds the preset flow rate B1, the switching unit simultaneously opens the discharge port and the material distribution port of the feed hopper, and part of the high-temperature material goes to the transport chain plate through the discharge port; S4: The transport chain plate starts and transports part of the high-temperature material at the first speed V1 until the high-temperature material entering the feed inlet through the connection channel is lower than the preset flow rate B1. The switching unit closes the discharge port of the feed hopper and opens the material distribution port, and the transport chain plate stops. All the high-temperature material enters the buffer bin through the connection channel.

[0015] In a possible implementation manner, in steps S2 - S4, a control valve arranged in the feed inlet is used to control the material flow rate entering the buffer bin.

[0016] In a possible implementation manner, when a failure occurs in the buffer bin and / or the connection channel, the switching unit closes the material distribution port of the feed hopper and opens the discharge port, and the transport chain plate transports all the high-temperature material at the second speed V2, where V2 > V1.

[0017] The beneficial effects of a high-temperature material transportation method provided by the present invention are as follows: Compared with the prior art, in step S2, the transport chain plate stops running, and the high-temperature material preferentially enters the buffer bin, creating conditions for efficient waste heat recovery. Steps S3 and S4 perform dynamic switching of the transportation path according to the change in the material flow rate in the connection channel. When the flow rate exceeds the preset value B1, part of the material is transported to the transport chain plate through the discharge port; when the flow rate is lower than B1, all the material enters the buffer bin. This control method avoids the problems of insufficient processing capacity or insufficient heat exchange in the buffer bin due to excessive material flow rate, and also ensures a reasonable load on the transport chain plate, effectively optimizing the operation efficiency of the entire transportation system. The transport chain plate starts and stops in a timely manner according to the change in the material flow rate and the transportation path. For example, in step S2, the transport chain plate stops running, avoiding unnecessary idling energy consumption; in step S4, when the material flow rate is low, the transport chain plate stops, reducing equipment wear, thereby extending the service life of equipment such as the transport chain plate and reducing the equipment maintenance cost. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is a schematic structural diagram of a high-temperature material transportation device provided by the present invention; Figure 2 is a schematic structural diagram of the feed hopper provided by the present invention in the state of closing the discharge port and opening the material distribution port; Figure 3 Schematic structural diagram of the feed hopper provided by the present invention in a state where the material discharge opening is opened and the material distribution opening is closed; Figure 4 Schematic structural diagram of the feed hopper provided by the present invention in a state where the material discharge opening and the material distribution opening are opened simultaneously; Figure 5 Schematic structural diagram of the buffer bin provided by the present invention; Figure 6 Schematic structural diagram of the connection channel provided by the present invention.

[0020] In the figure: 100, feed hopper; 110, material discharge opening; 120, material distribution opening; 130, three-way switching valve; 131, first surface; 132, second surface; 133, arc surface; 200, transport chain plate; 300, buffer bin; 310, feed inlet; 320, control valve; 330, jacket cavity; 340, heat exchange tube; 400, connection channel; 410, heat exchange cavity. Specific embodiments

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] Unless otherwise clearly defined, when using terms such as "first", "second" or "third", etc., they are all used to distinguish different objects and not to describe a specific order.

[0023] Unless otherwise clearly defined, for orientation terms, when using terms such as "center", "horizontal", "longitudinal", "level", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "high", "low", etc. to indicate the orientation or position relationship, it is based on the orientation and position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the specific protection scope of the present invention.

[0024] Please refer to Figures 1 to 6, a high-temperature material transportation device provided by the present invention will now be described. A high-temperature material transportation device includes a feeding hopper 100, a transportation chain plate 200, a buffer bin 300, and a switching component. A blanking port 110 is provided at the lower end of the feeding hopper 100, and a material distribution port 120 is formed on one side of the feeding hopper 100; the transportation chain plate 200 is arranged below the blanking port 110; the buffer bin 300 is located on one side of the feeding hopper 100, and a feeding port 310 is formed on one side of the buffer bin 300; the switching component includes a connection channel 400 and a switching unit. One end of the connection channel 400 communicates with the material distribution port 120, and the other end of the connection channel 400 communicates with the feeding port 310. The switching unit is located inside the feeding hopper 100, and the switching unit switches to communicate the material distribution port 120 and the blanking port 110, so as to transport high-temperature materials to the buffer bin 300 or to the transportation chain plate 200 through the connection channel 400.

[0025] Compared with the prior art, for the high-temperature material transportation device provided by the present invention, when waste heat recovery of high-temperature materials is required, the switching unit operates to communicate the material distribution port 120. After the high-temperature materials enter the feeding hopper 100, they no longer directly fall from the blanking port 110, but enter the connection channel 400 through the material distribution port 120, and then enter the buffer bin 300 along the channel. A heat exchange tube 340 is arranged inside the buffer bin 300, and a coolant is passed through the heat exchange tube 340. The heat of the high-temperature materials is transferred to the coolant, and the heated coolant flows out of the buffer bin 300 for other technological processes, realizing waste heat recovery and effectively improving the waste heat utilization efficiency.

[0026] In addition, when the production demand changes, the transportation path can be adjusted by controlling the switching unit. If it is necessary to transport the materials to the buffer bin 300, the switching unit communicates the material distribution port 120, and the materials will flow into the buffer bin 300; if waste heat recovery is not required or the materials need to be directly transported to other processes, the switching unit communicates the blanking port 110, and the materials directly fall from the blanking port 110 onto the lower transportation chain plate 200 and are transported to the designated location by the transportation chain plate 200. This operation method is simple and fast, greatly enhancing the flexibility and adaptability of the transportation system, being able to well meet the diverse and dynamic demands during the production process, and improving the overall efficiency and economic benefits of the shaft furnace pellet production process.

[0027] Please refer to Figure 5, a jacket cavity 330 is circumferentially arranged on the buffer bin 300. A heat exchange pipe 340 is spirally arranged in the jacket cavity 330 from top to bottom. The lower end of the heat exchange pipe 340 penetrates out of the jacket cavity 330, which is the liquid inlet end. The upper end of the heat exchange pipe 340 penetrates out of the jacket cavity 330, which is the liquid outlet end. The coolant enters through the liquid inlet end and is discharged from the liquid outlet end. After being heated by the high-temperature material located in the buffer bin 300, the temperature of the coolant rises. The heat exchange pipe 340 spirally arranged in the jacket cavity 330 greatly increases the heat exchange area and prolongs the contact path and time between the coolant and the high-temperature material. The coolant flows into the heat exchange pipe 340 from the liquid inlet end and fully absorbs the heat dissipated by the high-temperature material during the spiral rising process. When it is discharged from the liquid outlet end, the temperature is significantly increased. These heated coolants can be used in other industrial processes that require thermal energy, realizing the efficient recovery of the waste heat of the high-temperature material, improving the energy utilization rate, reducing the energy consumption cost of the enterprise, and conforming to the industrial development trend of energy conservation and emission reduction. In addition, a filler is arranged in the gap of the jacket cavity 330, and the filler is thermal insulation cotton. The thermal insulation cotton is filled in the gap of the jacket cavity 330, effectively reducing the heat dissipation from the buffer bin 300 to the external environment. This makes the temperature in the buffer bin 300 more stable. On the one hand, it helps to maintain the physical state stability of the high-temperature material, avoiding problems such as material caking and deterioration caused by temperature fluctuations and ensuring the material quality. On the other hand, the stable temperature environment is also conducive to the continuous and stable progress of the heat exchange process, improving the heat exchange efficiency and ensuring the reliability of the waste heat recovery work.

[0028] Please refer to Figure 5 , a control valve 320 is arranged on one side of the buffer bin 300. The control valve 320 is located at the feed inlet 310 and is used to control the flow rate of the high-temperature material passing through the feed inlet 310. The control valve 320 can accurately control the waste heat recovery efficiency. By precisely regulating the flow rate of the high-temperature material entering the buffer bin 300, the waste heat recovery process can be optimized. When it is necessary to maximize the waste heat recovery, appropriately increasing the material flow rate can make full use of the heat exchange area in the buffer bin 300 and improve the overall waste heat recovery amount. If the demand for the recovered heat in the subsequent process decreases, or the heat exchange capacity of the buffer bin 300 is limited, reducing the material flow rate can avoid insufficient heat exchange caused by excessive materials and ensure that the waste heat recovery efficiency is always maintained at a high level, further meeting the development requirements of energy conservation and emission reduction.

[0029] In addition, the control valve 320 effectively ensures the stability of the transportation system. It can effectively prevent material accumulation or empty bins in the buffer bin 300. During the production process, if the feeding speed upstream fluctuates, the control valve 320 can respond in a timely manner and adjust the material inflow rate. When the feeding speed is too fast, it reduces the flow rate at the feeding port 310 to prevent the buffer bin 300 from overflowing due to excessive materials; when the feeding speed is too slow, it appropriately increases the flow rate to ensure that the buffer bin 300 continuously and stably supplies materials to the subsequent processes, maintaining the stable operation of the transportation system, avoiding interference with the entire shaft furnace pellet production process due to unstable material supply, and ensuring the continuity and reliability of production.

[0030] The control valve 320 also improves the adaptability and flexibility of the equipment. Different production processes have different requirements for the processing volume and processing time of high-temperature materials, and the presence of the control valve 320 enables the transportation device to better adapt to these changes. For some process steps that require rapid processing of a large amount of high-temperature materials, the control valve 320 can be adjusted to a larger flow rate to meet the processing volume requirements; for processes with higher requirements for material processing fineness and that require controlling the slow entry of materials into the buffer bin 300, the flow rate can be precisely reduced. This flexible flow control function greatly enhances the adaptability of the transportation device to different production scenarios and process requirements, enabling the entire transportation system to serve diverse production needs more flexibly, and contributing to improving the overall efficiency and economic benefits of the shaft furnace pellet production process.

[0031] The control valve 320 is a flap valve, and the flap valve is arranged inside the feeding port 310. The structure of the flap valve is simple and compact, occupying extremely little space when installed inside the feeding port 310, and will not have too much impact on the layout of the buffer bin 300 and surrounding equipment, effectively saving the overall space of the equipment and making the structure of the entire transportation device more concise and reasonable. Its operation method is convenient, and the size of the channel at the feeding port 310 can be adjusted through a simple plugging and unplugging action, thereby precisely controlling the flow rate of high-temperature materials. During the actual production process, the staff can quickly operate the flap valve according to production needs. Whether it is necessary to increase the material flow rate to accelerate the waste heat recovery process or reduce the flow rate to meet special process requirements, it can be easily achieved, greatly improving the convenience and timeliness of operation.

[0032] In addition, the knife gate valve has good sealing performance. When the knife gate is fully inserted into the feed inlet 310, it can effectively block high-temperature materials, prevent their leakage, and avoid material waste and pollution to the surrounding environment. Even in harsh working environments with high temperature and high pressure, the knife gate valve can maintain stable sealing performance, ensuring the safety and reliability of the transportation process. At the same time, due to its simple structure and fewer components, the maintenance and repair work of the knife gate valve becomes relatively easy. During the daily maintenance of the equipment, the staff can conveniently check, clean, and repair the knife gate valve, reducing the equipment maintenance cost and downtime, ensuring the continuous and stable operation of the entire high-temperature material transportation device, and providing strong support for the efficient development of the shaft furnace pellet production process.

[0033] The buffer bin 300 is located below the feeding hopper 100, and the connecting channel 400 slopes downward from the material distribution port 120 to the feed inlet 310. Using gravity to assist in material transportation, the high-temperature material can slide into the buffer bin 300 along the connecting channel 400 by its own gravity without additional power equipment, which not only simplifies the transportation process but also reduces energy consumption and equipment costs. At the same time, this design effectively prevents material blockage. The inclined channel ensures that the material continuously slides under the action of gravity, reducing the risk of material accumulation in the channel, ensuring the stability and continuity of the transportation process, and avoiding production interruption.

[0034] In addition, the downward-sloping connecting channel 400 makes the high-temperature material more evenly distributed in the channel during transportation, increasing the contact area and time with the inner wall of the channel. Please refer to Figure 6 , a heat exchange chamber 410 is provided on the outer periphery of the connecting channel 400. A liquid inlet pipe is provided at the bottom of the heat exchange chamber 410, and a liquid discharge pipe is provided at the top. The coolant enters and fills the heat exchange chamber 410 through the liquid inlet pipe and then discharges through the liquid discharge pipe to absorb the heat of the high-temperature material in the connecting channel 400. The material can transfer more heat during the sliding process, further improving the waste heat recovery efficiency and making the connecting channel 400 an additional waste heat exchange area. In addition, due to the gravity assistance, the material flow velocity is stable and gentle, reducing the erosion and wear of the inner wall of the connecting channel 400 and the feed inlet 310 of the buffer bin 300, extending the service life of the key parts of the equipment, reducing the maintenance cost, and also avoiding the mixing of impurities into the material, ensuring the purity and quality of the material, and having a positive impact on the subsequent production process.

[0035] The switching unit is a three-way switching valve 130, and the three-way switching valve 130 is located inside the feed hopper 100. The three-way switching valve 130 simplifies the switching operation of the material transportation path. It can precisely control the flow direction of high-temperature materials. By simply adjusting the valve position, it can quickly realize the switching of the connection between the material distribution port 120 and the blanking port 110 on the feed hopper 100. Compared with other complex switching mechanisms, the operation of the three-way switching valve 130 is more convenient and efficient, which can effectively shorten the switching time and meet the requirement of quickly adjusting the material transportation path during the production process. In the case of the continuous change of the shaft furnace pellet production process, it can flexibly direct high-temperature materials to the buffer bin 300 for waste heat recovery, or directly to the transportation chain plate 200 for subsequent processing, enhancing the adaptability of the transportation system.

[0036] Since the three-way switching valve 130 is located inside the feed hopper 100, this layout makes the structure of the whole device more compact and reasonable. It reduces external connection components and complex transmission structures, not only saving the installation space of the equipment, but also reducing the manufacturing cost of the equipment. At the same time, the compact structure also reduces the risk of material leakage during transportation, improving the sealing and safety of material transportation. In addition, setting the three-way switching valve 130 inside the feed hopper 100 facilitates centralized maintenance and repair. During the daily maintenance of the equipment, the staff can easily access the three-way switching valve 130 to check, maintain and repair it, reducing the maintenance difficulty, maintenance time and cost, ensuring the stable operation of the whole high-temperature material transportation device, and providing strong support for the efficient progress of the shaft furnace pellet production process.

[0037] The three-way switching valve 130 includes a valve block. Rotating shafts are coaxially arranged at both ends of the valve block respectively. The rotating shafts are respectively rotatably installed on two opposite side walls of the feed hopper 100. Any one of the rotating shafts extends to the outside of the feed hopper 100 and is drivingly connected with a driving motor. The valve block is a sector block, and its outside has a first surface 131, an arc surface 133 and a second surface 132 in sequence. The rotating shafts are located between the first surface 131 and the second surface 132.

[0038] Please refer to Figure 2 , when it is necessary to close the blanking port 110 and open the material distribution port 120, the driving motor drives the valve block to rotate. The first surface 131 and the second surface 132 are located at the upper part of the valve block, and the arc surface 133 is located at the lower part of the valve block. The first surface 131 is in a horizontal state, and the second surface 132 is in a downward inclined state. The outer end of the first surface 131 fits against the inner wall of the corresponding side of the feed hopper 100, and the outer end of the second surface 132 fits against the lower edge of the material distribution port 120. The first surface 131 and the second surface 132 jointly block the blanking port 110, and the high-temperature material can only slide along the second surface 132 to the material distribution port 120.

[0039] Please refer to Figure 3, when it is necessary to open the blanking port 110 and close the material distribution port 120, the drive motor drives the valve block to rotate. The first surface 131 and the second surface 132 are located on one side of the valve block, and the arc surface 133 is located on the other side of the valve block. The first surface 131 is in a vertical state, the second surface 132 is in an upward inclined state. A gap is formed between the outer end of the first surface 131 and the inner wall of the corresponding side of the feeding hopper 100. The outer end of the second surface 132 is attached to the upper edge of the material distribution port 120, and the arc surface 133 seals the blanking port 110. The high-temperature material can only slide down to the blanking port 110 along the above-mentioned gap.

[0040] Please refer to Figure 4 , when it is necessary to open the blanking port 110 and the material distribution port 120 simultaneously, the drive motor drives the valve block to rotate. The first surface 131 is in a downward inclined state, the second surface 132 is in a substantially horizontal state. A gap is formed between the outer end of the first surface 131 and the inner wall of the corresponding side of the feeding hopper 100. There is also a gap between the outer end of the second surface 132 and the upper edge of the material distribution port 120. The high-temperature material slides down to the blanking port 110 and the material distribution port 120 respectively along the above two gaps.

[0041] A height detection unit is provided in the feeding hopper 100. The height detection unit is used to detect the height of the high-temperature material in the feeding hopper 100. The height detection unit can monitor the height of the high-temperature material in the feeding hopper 100 in real time. When the material height approaches or reaches the set upper limit value, the system will issue an alarm in time and can link with the upstream feeding equipment to pause or reduce the feeding. This effectively avoids the overflow caused by excessive materials, prevents material waste and pollution to the working environment, and ensures the cleanliness of the production site and the normal operation of the equipment. In addition, when the material height approaches or reaches the set upper limit value, the material distribution port 120 and the blanking port 110 can be opened simultaneously through the switching unit to accelerate the discharge speed of the high-temperature material, so that the height of the high-temperature material drops to a safe height. When the height detection unit detects that the material height is close to the lower limit value, it can remind the staff to replenish the material in time or adjust the feeding speed to ensure that there is always enough material supply in the feeding hopper 100. This can avoid the situation of the transportation chain plate 200 idling or the buffer bin 300 having insufficient feeding due to material shortage, maintain the continuity of the high-temperature material transportation, and then ensure the stable operation of the entire shaft furnace pellet production process and improve production efficiency. According to the material height information fed back by the height detection unit, the operator can optimize and adjust other parameters of the transportation device. For example, when the material height is relatively high, the running speed of the transportation chain plate 200 can be appropriately increased to improve the transportation efficiency; when the material height is relatively low, the speed of the transportation chain plate 200 is reduced to save energy and reduce equipment wear. This helps to achieve the refined management of the equipment, extend the service life of the equipment, and reduce production costs at the same time.

[0042] In addition, the height detection unit can not only detect the height of the material, but also indirectly assist in waste heat recovery. Since there are differences in the temperature distribution of materials at different heights, generally speaking, the temperature of the material near the top of the feeding hopper 100 is relatively low, and the temperature at the bottom is relatively high. The material height data provided by the height detection unit, combined with the temperature detection data, enables technicians to more accurately understand the thermal distribution of the material. Based on this information, the waste heat recovery strategy of the buffer bin 300 can be optimized. When it is detected that the material height in the feeding hopper 100 is high and there is a large amount of high-temperature material at the bottom, the flow rate of the coolant in the buffer bin 300 can be appropriately increased to improve the waste heat recovery efficiency. During long-term operation, the data collected by the height detection unit can also be used to predict equipment failures. If abnormal fluctuations are found in the change of the material height, such as a sudden rapid increase or decrease in the material height under stable feeding conditions, this may indicate a failure in the feeding hopper 100, the transport chain plate 200, or other related components, such as blockage, leakage, or mechanical failures. By analyzing these abnormal data, the staff can take preventive measures for equipment maintenance in advance, avoid the expansion of failures, reduce equipment downtime, and ensure the smooth progress of production. This functional expansion goes beyond the initial expectation of only detecting the material height.

[0043] A flow rate detection unit is provided in the connection channel 400. The flow rate detection unit is used to detect the flow rate of the high-temperature material in the connection channel 400. The flow rate detection unit can monitor the flow rate of the high-temperature material in the connection channel 400 in real time, providing data support for precise control of material transportation. When the production process has specific requirements for the amount of material entering the buffer bin 300, the operator can adjust the opening degree of the control valve 320 in a timely manner based on the data feedback by the flow rate detection unit. For example, in the waste heat recovery process, if the best heat exchange effect is desired, the material flow rate can be stably controlled within the range with the highest heat exchange efficiency by adjusting the control valve 320, ensuring the high efficiency of waste heat recovery, avoiding the influence of too large or too small material flow rate on the heat exchange effect, and thus improving the energy utilization rate.

[0044] In addition, besides monitoring the material flow rate, the flow rate detection unit can also indirectly reflect the wear condition of the equipment. Under normal circumstances, the flow of the material in the connection channel 400 is relatively stable, and the flow rate change follows a certain pattern. However, when the inner wall of the connection channel 400 is worn, the flow resistance of the material will change, thereby affecting the material flow rate. Through long-term analysis of the flow rate data, if abnormal regular changes are found in the flow rate fluctuations, combined with other equipment operation parameters, it can be inferred that there may be wear in the connection channel 400. By checking and repairing the worn parts in advance, the service life of the equipment can be extended, and the equipment maintenance cost can be reduced. This is a function that was not expected when the flow rate detection unit was initially set up.

[0045] Based on the same inventive concept, the present invention also provides a method for transporting high-temperature materials, which uses the above-mentioned high-temperature material transportation device and includes the following steps: S1: The bucket elevator trolley continuously adds high-temperature materials to the feeding hopper 100 until the high-temperature materials in the feeding hopper 100 reach a preset height H1.

[0046] The bucket elevator trolley transports the high-temperature materials from a lower position to above the feeding hopper 100 through a lifting mechanism, and then evenly adds the materials to the feeding hopper 100 through a discharging device. During the adding process, the height detection unit in the feeding hopper 100 continuously monitors the material height and feeds the data back to the control system. Ensure that there is enough material reserve in the feeding hopper 100 to provide a stable material source for subsequent transportation work. Maintaining a stable material height helps to control the pressure distribution of the materials in the hopper, enabling the materials to enter the subsequent transportation links more evenly, avoiding problems such as discontinuous transportation due to too little material or hopper blockage due to too much material. A stable material height helps to keep the heat distribution of the materials in the hopper relatively stable. Since heat transfer occurs to the high-temperature materials in the hopper, if the material height changes frequently, the heat transfer situation will also change accordingly. And a stable material height makes the heat distribution relatively fixed, facilitating targeted optimization of the waste heat recovery system. For example, according to the stable heat distribution situation, the position and parameters of the heat exchange device in the buffer bin 300 can be set more reasonably to further improve the waste heat recovery efficiency.

[0047] S2: The switching unit closes the material dropping port 110 of the feeding hopper 100 and opens the material distributing port 120. The transport chain plate 200 is in a stopped state, and the high-temperature materials enter the buffer bin 300 through the connecting channel 400.

[0048] The three-way switching valve 130 in the switching unit quickly operates under the instruction of the control system to close the material dropping port 110 of the feeding hopper 100 and open the material distributing port 120 at the same time. At this time, the driving device of the transport chain plate 200 stops working to ensure that the transport chain plate 200 is stationary. Under the action of gravity, the high-temperature materials enter the connecting channel 400 from the material distributing port 120 of the feeding hopper 100. Since the connecting channel 400 slopes downward from the material distributing port 120 to the feeding port 310, the materials flow smoothly into the buffer bin 300. During the process of the materials flowing into the buffer bin 300, the control valve 320 at the feeding port 310 accurately controls the speed of the materials entering the buffer bin 300 by adjusting its own opening degree according to a preset flow value.

[0049] Prioritize transporting high-temperature materials to the buffer bin 300 to create conditions for waste heat recovery. This method can make full use of the waste heat recovery function of the buffer bin 300 to improve energy utilization efficiency. At the same time, the transport chain plate 200 stops running, avoiding unnecessary energy consumption and equipment wear, and extending the service life of the transport chain plate 200. During the process of materials entering the buffer bin 300, since the flow detection unit in the connection channel 400 continuously monitors the material flow, when abnormal fluctuations occur in the material flow, this may mean that there are foreign objects or local blockages in the connection channel 400. At this time, these problems can be detected and processed in a timely manner to avoid the expansion of faults. Moreover, since the transport chain plate 200 stops running, when dealing with faults in the connection channel 400, there is no need to worry about materials accidentally entering the transport chain plate 200, improving the safety and convenience of maintenance work.

[0050] S3: When the high-temperature materials entering the feed inlet 310 through the connection channel 400 exceed the preset flow rate B1, the switching unit simultaneously opens the discharge port 110 and the distribution port 120 of the feed hopper 100, and part of the high-temperature materials pass through the discharge port 110 to the transport chain plate 200.

[0051] The flow detection unit in the connection channel 400 continuously monitors the material flow and transmits the data to the control system in real time. When the flow detection unit detects that the flow rate of the high-temperature materials entering the feed inlet 310 exceeds the preset flow rate B1, the control system issues an instruction to control the action of the three-way switching valve 130 in the switching unit, and simultaneously opens the discharge port 110 and the distribution port 120 of the feed hopper 100. At this time, part of the high-temperature materials enter the buffer bin 300 through the distribution port 120 via the connection channel 400, and the other part directly falls onto the transport chain plate 200 below from the discharge port 110. The control valve 320 at the feed inlet 310 continues to function, adjusting the material flow rate entering the buffer bin 300 according to the actual situation to ensure that the material processing capacity in the buffer bin 300 matches the waste heat recovery efficiency.

[0052] Automatically adjust the transport path according to the material flow to avoid the buffer bin 300 from being overloaded due to excessive material flow rate, and ensure the stable operation of the buffer bin 300. At the same time, directly transporting part of the materials to the transport chain plate 200 can improve the overall material transport efficiency and meet the requirements of the production process for the material processing volume. This method of automatically switching the transport path according to the flow rate can also optimize the energy consumption of the entire transport system. When the material flow rate is large, directly transporting part of the materials to the transport chain plate 200 reduces the residence time and processing volume of the materials in the buffer bin 300, reducing the energy consumption of the buffer bin 300. Moreover, since the transport chain plate 200 can promptly share the material transport pressure, it avoids the increase in flow resistance caused by excessive accumulation of materials in the connection channel 400, further reducing the energy consumption of the entire transport process.

[0053] S4: The transport chain plate 200 starts and transports part of the high-temperature materials at the first speed V1 until the high-temperature materials entering the feed inlet 310 through the connection channel 400 are lower than the preset flow rate B1. The switching unit closes the blanking port 110 of the feeding hopper 100 and opens the material distribution port 120. The transport chain plate 200 stops, and all the high-temperature materials enter the buffer bin 300 through the connection channel 400.

[0054] When the switching unit opens the blanking port 110 and part of the materials fall onto the transport chain plate 200, the driving device of the transport chain plate 200 starts and runs at the preset first speed V1 to transport the materials to the subsequent processes. During the transportation process, the flow rate detection unit continuously monitors the material flow rate in the connection channel 400. When it is detected that the flow rate of the high-temperature materials entering the feed inlet 310 is lower than the preset flow rate B1, the control system issues another instruction, the switching unit acts, closes the blanking port 110 of the feeding hopper 100, and at the same time opens the material distribution port 120. The driving device of the transport chain plate 200 stops working, and the transport chain plate 200 stops running. At this time, all the high-temperature materials enter the buffer bin 300 through the connection channel 400 again, and the control valve 320 at the feed inlet 310 continues to accurately control the material flow rate to achieve the best waste heat recovery effect.

[0055] Reasonably allocate the transportation path of the materials to ensure that both the buffer bin 300 and the transport chain plate 200 can operate under their respective appropriate working loads, improving the stability and reliability of the entire transportation system. At the same time, by dynamically adjusting the operating state of the transport chain plate 200 according to the material flow rate, the energy utilization efficiency is further improved, and unnecessary energy waste is reduced. During the start-up and stop of the transport chain plate 200, due to the inertia and friction of the materials, a certain impact force will be generated on the transport chain plate 200. And by this way of accurately controlling the start and stop of the transport chain plate 200 according to the material flow rate, the damage of this impact force to the transport chain plate 200 can be effectively reduced.

[0056] When a failure occurs in the buffer bin 300 and / or the connection channel 400, the switching unit closes the material distribution port 120 of the feeding hopper 100 and opens the blanking port 110. The transport chain plate 200 transports all the high-temperature materials at the second speed V2, where V2 > V1.

[0057] During the operation of the transportation device, various sensors (such as temperature sensors, pressure sensors, flow sensors, etc.) installed on the buffer bin 300 and the connection channel 400 are used to monitor the device status in real time. When these sensors detect a fault signal (such as abnormal temperature rise, abnormal pressure fluctuation, material leakage, etc.) in the buffer bin 300 or the connection channel 400, the fault information will be quickly transmitted to the control system. The control system immediately issues an instruction, and the switching unit acts to close the material distribution port 120 of the feeding hopper 100 and simultaneously open the blanking port 110 to ensure that high-temperature materials no longer enter the fault area. The driving device of the transportation chain plate 200 quickly adjusts the running speed and runs at the second speed V2, which is greater than the first speed V1 during normal operation, so as to accelerate the transportation speed of the materials, avoid the accumulation of materials in the feeding hopper 100, and ensure the continuity of production.

[0058] When a fault occurs in the device, it can quickly switch the transportation path to ensure the normal transportation of high-temperature materials, avoid production interruption caused by equipment failure, and reduce economic losses. Increasing the running speed of the transportation chain plate 200 can quickly transport the materials upstream of the fault area, preventing further damage to the equipment caused by material backlog. Increasing the speed of the transportation chain plate 200 in an emergency can also perform a special detection on the transportation chain plate 200. Since various stresses and frictional forces on the transportation chain plate 200 will increase during high-speed operation, if there are potential defects in the transportation chain plate 200 itself (such as chain link wear, loosening of the connection part, etc.), they are more likely to be exposed under high-speed operation. In this way, potential problems of the transportation chain plate 200 can be detected in time, and repairs and replacements can be made before a fault occurs, improving the overall reliability of the equipment, which is an unexpected effect when designing the emergency transportation plan.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high temperature material transport device, characterized in that: include: A feeding funnel (100), wherein a feeding port (110) is provided at the lower end of the feeding funnel (100), and a material distribution port (120) is provided at one side of the feeding funnel (100); A transport chain plate (200), wherein the transport chain plate (200) is arranged below the drop opening (110); A buffer bin (300), the buffer bin (300) being located on one side of the feeding hopper (100), and a feed inlet (310) being provided on one side of the buffer bin (300); A switching component, the switching component comprising a connecting channel (400) and a switching unit, one end of the connecting channel (400) being connected to the material distribution port (120), and the other end of the connecting channel (400) being connected to the material feed port (310), the switching unit being located in the feeding hopper (100), and the switching unit switchingly connecting the material distribution port (120) and the material drop port (110) so as to transport high-temperature materials to the buffer bin (300) or to the transport chain plate (200) through the connecting channel (400).

2. A high temperature material transport device as claimed in claim 1, characterized in that: A control valve (320) is provided on one side of the buffer bin (300), and the control valve (320) is located at the feed inlet (310) and is used to control the flow of high-temperature material passing through the feed inlet (310).

3. A high temperature material transport device as claimed in claim 2, characterized in that: The control valve (320) is a gate valve, and the gate valve is arranged in the feed port (310).

4. A high temperature material transport device as claimed in claim 1, characterized in that: The buffer bin (300) is located below the feeding hopper (100), and the connecting channel (400) is inclined downward from the material distribution port (120) to the material feeding port (310).

5. A high temperature material transport device as claimed in claim 1, characterized in that: The switching unit is a three-way switching valve (130), and the three-way switching valve (130) is located in the inner cavity of the feeding funnel (100).

6. A high temperature material transport device as claimed in claim 1, characterized in that: A height detection unit is provided in the feeding funnel (100), and the height detection unit is used to detect the height of the high-temperature material in the feeding funnel (100).

7. A high temperature material transport device as claimed in claim 1, characterized in that: A flow detection unit is provided in the connecting channel (400), and the flow detection unit is used to detect the flow of high-temperature material in the connecting channel (400).

8. A method for transporting high temperature materials, characterized in that: The high temperature material transport device according to any one of claims 1 to 7 is used, comprising the following steps: S1: The bucket lifting trolley continuously adds high-temperature materials to the feeding hopper (100) until the high-temperature materials in the feeding hopper (100) reach a preset height H1; S2: The switching unit closes the drop opening (110) of the feeding hopper (100) and opens the distribution opening (120), the transport chain plate (200) is in a stopped state, and the high-temperature material enters the buffer bin (300) through the connecting channel (400); S3: When the high-temperature material entering the feed port (310) through the connecting channel (400) exceeds a preset flow rate B1, the switching unit simultaneously opens the drop port (110) and the distribution port (120) of the feeding hopper (100), and part of the high-temperature material flows through the drop port (110) to the transport chain plate (200); S4: The transport chain plate (200) starts and transports part of the high-temperature material at a first speed V1 until the amount of high-temperature material entering the feed port (310) through the connecting channel (400) is lower than a preset flow rate B1, the switching unit closes the drop port (110) of the feeding hopper (100) and opens the distribution port (120), the transport chain plate (200) stops, and all the high-temperature material enters the buffer bin (300) through the connecting channel (400).

9. A high temperature material transportation method as claimed in claim 8, characterized in that: In steps S2 to S4, the flow rate of the material entering the buffer bin (300) is controlled by using a control valve (320) disposed in the feed port (310).

10. A high temperature material transportation method according to claim 8, characterized in that: When the buffer bin (300) and / or the connecting channel (400) fails, the switching unit closes the material distribution port (120) of the feeding hopper (100) and opens the material drop port (110), and the transport chain plate (200) transports all high-temperature materials at a second speed V2, V2>V1.

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