A ring cooler material level detection system

Abstract

This invention provides a material level detection system for an annular cooler, including a trolley mechanism, an annular cooler hood, a material level detection mechanism, and a leveling mechanism. The material level detection mechanism includes a front-end material level detection device and an end-end material level detection device. This forms a progressive material level detection logic of initial material level pre-detection – smoothing the wavy material surface – accurate detection after leveling. It eliminates the need for expensive detection components such as laser scanners, solving the core problem of inaccurate material level detection caused by the wavy material surface in existing technologies. This provides reliable material level data support for the precise adjustment of the annular cooler's speed. At the same time, it ensures that the material layer height on the trolley is stably maintained at the design value, maximizing the utilization rate of the annular cooler's waste heat, effectively preventing material accumulation in the feed chute from causing machine jams in the single-roll crusher, and ensuring production continuity.

Description

Technical Field

[0001] This invention relates to the field of annular cooler technology, and in particular to an annular cooler material level detection system. Background Technology

[0002] In the sinter production process of the metallurgical industry, the annular cooler is a core piece of equipment for cooling the high-temperature sinter after it has been crushed by a single-roll crusher. The temperature of the crushed sinter is about 700℃, and after cooling by the annular cooler, it can be reduced to a temperature that is convenient for subsequent processing. To meet the current industry requirements for environmental protection emissions and efficient utilization of waste heat, annular coolers generally adopt a fully sealed structure design. While this design solves the problems of dust escape and waste heat collection, it also makes the detection of the material layer height inside the annular cooler trolley a technical challenge. Currently, enterprises have increasingly higher requirements for the waste heat utilization rate of the annular cooler, requiring the material layer height on the trolley to be maximized to the design value. This goal is usually achieved by adjusting the speed of the annular cooler, but the accurate adjustment of the speed depends on the real-time detection of the material layer height. In actual production, when the material layer height is close to the design value, operators, lacking effective means of material layer detection, are prone to worrying that the accumulated material in the feed chute may cause the single-roll crusher to jam, making it difficult to reach the design value and thus failing to fully utilize the waste heat utilization efficiency.

[0003] In existing technologies, material level detection in annular coolers mainly employs non-contact detection methods such as radar level gauges, ultrasonic level gauges, or laser scanners. However, their detection accuracy is easily affected by the high-temperature environment inside the annular cooler and the wavy state of the material surface when it does not reach the design value. Furthermore, laser scanner-type detection solutions are costly. Some solutions detect material levels by opening an opening in the chute and using a pipeline triggering unit, or by setting up a material layer detection unit in conjunction with a leveling mechanism to detect and adjust the material level. However, these solutions either suffer from problems such as blockage in the detection pipeline, only being able to detect material in the chute but not the material layer height inside the trolley, or because the detection unit is located behind the leveling mechanism, it is easily damaged by the high-temperature dust inside the annular cooler, and the detection accuracy is poor when the material surface is uneven and does not reach the design value. In addition, manually observing material layer changes through the low-temperature zone observation door is only suitable for temporary detection and cannot meet the detection requirements of continuous automated production of annular coolers.

[0004] Therefore, it is necessary to propose a material level detection system for an annular cooler to solve or at least alleviate the above-mentioned defects. Summary of the Invention

[0005] The main objective of this invention is to provide a material level detection system for an annular cooler, so as to solve the problem of poor detection accuracy caused by easy damage to the material level detection elements in the prior art.

[0006] To achieve the above objectives, the present invention provides a material level detection system for an annular cooler, comprising a trolley mechanism, an annular cooler shroud, a material level detection mechanism, and a leveling mechanism; wherein, The trolley mechanism has a feed inlet and a loading space, and the annular cooling shroud is located above the trolley mechanism. The material level detection mechanism includes a front-end material level detection device and an end-end material level detection device. The front-end material level detection device, the leveling mechanism, and the end-end material level detection device are all connected in the annular cooling shroud and are arranged sequentially at intervals along the trolley running direction. The front-end material level detection device is used to detect the initial material level height. The leveling end of the leveling mechanism is vertically movable to level the material level height. The end-end material level detection device is used to detect the material level height after leveling. The detection ends of the front-end material level detection device and the end-end material level detection device extend into the loading space to contact the material layer.

[0007] Preferably, the trolley mechanism includes a trolley and two side panels spaced apart along the width of the trolley. The two side panels are respectively connected to both sides of the trolley, and the trolley and the two side panels together form the loading space.

[0008] Preferably, both the front-end material level detection device and the end-end material level detection device include a rotating shaft, a steel pipe frame, a detection pointer, and a detection scale. The rotating shaft is rotatably connected to the annular cooling shroud and extends out of the annular cooling shroud at both ends. The steel pipe frame extends into the loading space to contact the material layer and is connected to the rotating shaft. The detection scale is connected to the outside of the annular cooling shroud. The detection pointer is connected to the extended end of the rotating shaft and is used to point to the detection scale to detect the material level height.

[0009] Preferably, the leveling mechanism includes a frame, a leveling plate, and a vertical drive assembly. The frame is disposed above the annular cooling shroud, the vertical drive assembly is connected to the frame, the annular cooling shroud has a through hole for the drive end of the vertical drive assembly to pass through, the leveling plate is connected to the drive end of the vertical drive assembly, and the drive end of the vertical drive assembly is movably disposed vertically to drive the leveling plate to move vertically to level the material.

[0010] Preferably, the vertical drive assembly includes a winch, a main fixed pulley, and two pulley groups spaced apart along the width of the trolley, each pulley group including a secondary fixed pulley and a movable pulley; wherein, The winch is connected to one side of the frame. The main fixed pulley and the auxiliary fixed pulley are both connected to the top of the frame. The two movable pulleys are respectively connected to the top two sides of the flat plate. The winch is connected to the main fixed pulley, the auxiliary fixed pulley and the movable pulley in sequence by a cable, and drives the flat plate to move vertically by extending and retracting the cable.

[0011] Preferably, the flattening mechanism further includes two guide units spaced apart along the width direction of the trolley. Each guide unit includes a limiting plate and a guide plate. The limiting plate is fixed to the inner side of the annular cold cover, and the guide plate is fixed to the inner side of the limiting plate, so as to be disposed between the limiting plate and the flattening plate.

[0012] Preferably, the bottom end of the flat plate is serrated.

[0013] Preferably, the cross-section of the steel pipe frame is rectangular.

[0014] Preferably, it further includes a feeding chute, which is disposed at the feed inlet and the discharge end is connected to the feed inlet.

[0015] Preferably, the display range of the detection dial is 1.3m to 1.5m.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a material level detection system for an annular cooler, comprising a trolley mechanism, an annular cooler cover, a material level detection mechanism, and a leveling mechanism. The trolley mechanism has a feed inlet and a loading space. The annular cooler cover is located above the trolley mechanism. The material level detection mechanism includes a front-end material level detection device and an end-end material level detection device. The front-end material level detection device, the leveling mechanism, and the end-end material level detection device are all connected in the annular cooler cover and are arranged sequentially at intervals along the trolley's running direction. The front-end material level detection device is used to detect the initial material level height. The leveling end of the leveling mechanism is vertically movable to level the material level height. The end-end material level detection device is used to detect the material level height after leveling. The detection ends of the front-end material level detection device and the end-end material level detection device both extend into the loading space to contact the material layer. This progressive material level detection logic—initial material level pre-detection, smoothing of the wavy material surface, and precise detection after leveling—eliminates the need for expensive detection components such as laser scanners. It solves the core problem of inaccurate material level detection caused by the wavy material surface in existing technologies, providing reliable material level data support for precise adjustment of the ring cooler's speed. Simultaneously, it ensures that the material layer height on the trolley remains stable at the design value, maximizing the utilization rate of the ring cooler's waste heat and effectively preventing material accumulation in the feed chute from causing jamming accidents in the single-roll crusher, thus guaranteeing production continuity. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a side view of the overall system in one embodiment of the present invention; Figure 2 This is a frontal view of the material level detection mechanism in one embodiment of the present invention; Figure 3 This is a frontal view of the flattening mechanism in one embodiment of the present invention.

[0019] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0020] Explanation of reference numerals in the attached figures: 10. Trolley mechanism; 110. Trolley; 120. Sideboard; 130. Loading space; 140. Feed chute; 20. Circular cooling hood; 30. Material level detection mechanism; 310. Front-end material level detection device; 311. Rotating shaft; 312. Steel pipe frame; 313. Detection pointer; 314. Detection scale; 320. End-end material level detection device; 40. Leveling mechanism; 410. Frame; 420. Leveling plate; 430. Vertical drive assembly; 431. Winch; 432. Main fixed pulley; 433. Secondary fixed pulley; 434. Moving pulley; 440. Limiting plate; 450. Guide plate; 460. Leveling pointer; 470. Leveling scale. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0025] Please see the appendix Figure 1-3 An embodiment of the present invention provides a material level detection system for an annular cooler, comprising a trolley mechanism 10, an annular cooler cover 20, a material level detection mechanism 30, and a material leveling mechanism 40, the specific scheme of which is as follows: The trolley mechanism 10 has a feed inlet and a loading space 130. The annular cooling shroud 20 is installed above the trolley mechanism 10. The material level detection mechanism 30 includes a front-end material level detection device 310 and an end-end material level detection device 320. The front-end material level detection device 310, the leveling mechanism 40, and the end-end material level detection device 320 are all connected in the annular cooling shroud 20 and are arranged sequentially at intervals along the running direction of the trolley 110. The front-end material level detection device 310 is used to detect the initial material level height. The leveling end of the leveling mechanism 40 is vertically movable to level the material level. The end-end material level detection device 320 is used to detect the material level height after leveling. The detection ends of the front-end material level detection device 310 and the end-end material level detection device 320 extend into the loading space 130 to contact the material layer.

[0026] Specifically, the material level detection system of the annular cooler in this application includes a trolley mechanism 10, an annular cooler hood 20, a material level detection mechanism 30, and a leveling mechanism 40. By sequentially arranging the front-end material level detection device 310, the leveling mechanism 40, and the end-end material level detection device 320 in the annular cooler hood 20 along the running direction of the trolley 110, a progressive operation logic of initial material level pre-detection - wavy material surface leveling - accurate detection after leveling is formed. This fundamentally solves the technical problem of inaccurate detection data caused by the wavy material surface when the material layer of the annular cooler does not reach the design value. The detection ends of the front-end and end-end material level detection devices 320 extend directly into the loading space 130 of the trolley mechanism 10 and contact the material layer. This contact-type detection method effectively avoids the impact of the high temperature and dust environment within the fully sealed structure of the annular cooler on detection accuracy, resulting in more reliable detection data. The leveling end of the leveling mechanism 40 is vertically movable, allowing for flexible adjustment of the leveling height based on the initial material level detected by the front end. This adapts to the flatness requirements of material surfaces with varying degrees of waviness, providing a flat detection base for the end-end material level detection device 320. The overall structural layout is highly compatible with the sealed and rotating operation of the annular cooler, eliminating the need for significant modifications to the original trolley mechanism 10 and frame 410. This provides reliable material level data support for precise speed adjustment of the annular cooler, ensuring that the material layer height on the trolley 110 consistently reaches the design value, maximizing the utilization rate of the annular cooler's waste heat. It also effectively prevents material accumulation in the feed chute 140 from causing jamming accidents in the single-roll crusher, ensuring continuous production.

[0027] In a preferred embodiment of the present invention, the trolley mechanism 10 includes a trolley 110 and two side panels 120 spaced apart along the width direction of the trolley 110. The two side panels 120 are respectively connected to the two sides of the trolley 110, and the trolley 110 and the two side panels 120 together form the loading space 130.

[0028] It should be noted that by arranging guardrails 120 at intervals along the width direction on both sides of the trolley 110, the trolley 110 and the two guardrails 120 enclose a closed loading space 130. On the one hand, this effectively prevents the sinter from spilling from both sides during the rotation of the trolley 110, ensuring that the material layer forms a stable accumulation shape within the loading space 130. This provides a regular working surface for material level detection and leveling operations, avoiding deviations in material level detection caused by material spillage. On the other hand, the arrangement of the guardrails 120 on both sides, in conjunction with the upper annular cooling hood 20, further enhances the sealing effect of the annular cooler, reduces the air leakage rate of the cooling air inside the annular cooler, and ensures the effectiveness of waste heat recovery and forced-air cooling.

[0029] In a preferred embodiment of the present invention, both the front-end material level detection device 310 and the end-end material level detection device 320 include a rotating shaft 311, a steel pipe frame 312, a detection pointer 313, and a detection scale 314. The rotating shaft 311 is rotatably connected to the annular cooling shroud 20 and extends out of the annular cooling shroud 20 at both ends. The steel pipe frame 312 extends into the loading space 130 to contact the material layer and is connected to the rotating shaft 311. The detection scale 314 is connected to the outside of the annular cooling shroud 20. The detection pointer 313 is connected to the extended end of the rotating shaft 311 and is used to point to the detection scale 314 to detect the material level height.

[0030] It is worth noting that the combined structure of the rotating shaft 311, steel pipe frame 312, detection pointer 313, and detection dial 314 realizes contact-type mechanical material level detection. Compared with existing non-contact detection methods such as radar, ultrasound, and laser, this method has a simpler structure, lower manufacturing cost, and no complex electronic detection components. It can withstand the high temperature and dusty conditions inside the annular cooler, the detection components are not easily damaged, the equipment has high operational stability, and is easy to maintain. The rotating shaft 311 is rotatably connected to the annular cooler 20. When the steel pipe frame 312 extends into the loading space 130 and contacts the material layer, the change in the height of the material layer can drive the steel pipe frame 312 to rotate around the rotating shaft 311, thereby driving the detection pointer 313 on the outside of the rotating shaft 311 to rotate synchronously and point to the detection dial 314, realizing a direct display of the material level height. The detection response is sensitive and the data feedback is direct. The mechanical detection structure can also be equipped with a multi-point detection device on the detection dial 314 and connected to the central control room to transmit the material level signal to the central control system, realizing intelligent and remote detection of material level height, taking into account both the needs of on-site intuitive detection and automated production. It is worth mentioning that, under normal circumstances, the material feeding height of the ring cooler is 1.5m. In actual production, when the material layer is close to 1.5m, there is a concern that the material stored in the feed chute 140 will accumulate on the single roll crusher, causing the machine to jam. Therefore, in a preferred embodiment of this application, the display range of the detection dial 314 is 1.3m~1.5m. When the material layer height reaches this range, the front-end material level detection device 310 will be triggered. Because the material surface is wavy, the measurement will have a maximum and a minimum value. The average value is taken as the leveling height of the leveling device. After the material layer is leveled by the leveling device, the material surface is flat. At this time, the end material level detection device 320 will have an accurate measurement value. Based on this measurement height, the machine speed is adjusted to finally make the material layer reach the design value and maximize the waste heat utilization efficiency.

[0031] In a preferred embodiment of the present invention, the leveling mechanism 40 includes a frame 410, a leveling plate 420, and a vertical drive assembly 430. The frame 410 is disposed above the annular cooling shroud 20, and the vertical drive assembly 430 is connected to the frame 410. The annular cooling shroud 20 has a through hole through which the drive end of the vertical drive assembly 430 passes. The leveling plate 420 is connected to the drive end of the vertical drive assembly 430, and the drive end of the vertical drive assembly 430 is movably disposed vertically to drive the leveling plate 420 to move vertically to level the material.

[0032] It is worth noting that placing the frame 410 above the annular cooling shroud 20 provides a stable mounting support for the vertical drive assembly 430, keeping it away from the high-temperature and dusty environment inside the annular cooling shroud 20. This effectively prevents corrosion and wear of the drive assembly under harsh working conditions, extending the service life of the vertical drive assembly 430. The through holes on the annular cooling shroud 20 provide an effective connection channel between the drive end of the vertical drive assembly 430 and the flat plate 420 inside the annular cooling shroud 20. This ensures effective power transmission from the drive end and, through the sealing treatment of the through holes, does not affect the overall sealing performance of the annular cooler. The vertical drive assembly 430 drives the flat plate 420 to move vertically. The height of the flat plate 420 can be flexibly adjusted according to the detection data of the front-end material level detection device 310, accurately adapting to the effective flattening range of the material layer of the annular cooler from 1.2m to 1.5m, meeting the flattening requirements of different material level heights. The overall structure is reasonably laid out, the power transmission is stable, and the flattening height adjustment is highly flexible. Among them, the flattening device can be equipped with an encoder on the geared motor of the winch 431 and connected to the central control. According to the measurement data of the front-end material level detection device 310, the height of the flat plate 420 can be adjusted in real time to achieve automated control.

[0033] In a preferred embodiment of the present invention, the vertical drive assembly 430 includes a winch 431, a main fixed pulley 432, and two pulley groups spaced apart along the width of the trolley 110. Each pulley group includes a secondary fixed pulley 433 and a movable pulley 434. The winch 431 is connected to one side of the frame 410, the main fixed pulley 432 and the secondary fixed pulley 433 are both connected to the top of the frame 410, and the two movable pulleys 434 are respectively connected to the top two sides of the flat plate 420. The winch 431 is connected to the main fixed pulley 432, the secondary fixed pulley 433 and the movable pulley 434 in sequence by a cable, and drives the flat plate 420 to move vertically by extending and retracting the cable.

[0034] It is worth noting that the transmission method of using a winch 431 in conjunction with a main fixed pulley 432 and a double pulley block fully utilizes the labor-saving principle of pulleys. The cable of the winch 431 passes through the main fixed pulley 432, the auxiliary fixed pulley 433, and the movable pulley 434 in sequence before connecting to the flat plate 420. This significantly reduces the force on the flat plate 420 when the winch 431 drives it to move vertically. Half of the weight of the flat plate 420 can be transferred to the frame 410 through the pulley block, effectively reducing the energy consumption and mechanical wear of the winch 431 and extending its service life. Two pulley blocks are spaced apart along the width of the trolley 110, ensuring even force distribution on both sides of the top of the flat plate 420. This prevents the flat plate 420 from tilting or jamming during vertical movement, ensuring stable vertical movement and improving the accuracy of flattening height adjustment. When the cable passes through the active pulley 434 and distributes to the two pulley blocks, a cable divider plate can be used for group connection, ensuring consistency during sliding. When the moving pulley 434 connects to the cable, the end of the cable can be connected by a hanging device below the frame 410. Simultaneously, the double-sided force-bearing structure ensures more balanced force distribution on the flat plate 420 when it contacts the material layer, resulting in a more stable flattening effect. The overall transmission structure is simple, has low manufacturing cost, and the cable drive method is suitable for the operating conditions of the annular cooler, offering high transmission stability and convenient maintenance.

[0035] It is worth mentioning that a leveling pointer 460 can be set on the cable near the winch 431, and a leveling scale plate 470 can be set on the frame 410 at the corresponding position. The leveling scale plate 470 ranges from 1.2m to 1.5m from top to bottom. When the winch 431 controls the cable to rise and drive the leveling plate 420 to fall, the leveling pointer 460 will rise to point to the corresponding value on the leveling scale plate 470, indicating the current height position of the leveling plate 420, so as to further clarify the real-time data.

[0036] Furthermore, the leveling mechanism 40 also includes two guide units spaced apart along the width direction of the trolley 110. Each guide unit includes a limiting plate 440 and a guide plate 450. The limiting plate 440 is fixed to the inner side of the annular cooling shroud 20, and the guide plate 450 is fixed to the inner side of the limiting plate 440, so as to be disposed between the limiting plate 440 and the leveling plate 420.

[0037] It should be noted that the limiting plate 440 is fixed inside the annular cooling shroud 20, and the guide plate 450 is located between the limiting plate 440 and the flat plate 420, forming a double-sided guiding and limiting structure for the flat plate 420. This structure can effectively limit the swaying and lateral deviation of the flat plate 420 during vertical movement and during flattening operations in contact with the material layer, ensuring that the flat plate 420 always moves accurately vertically, avoiding problems such as uneven material surface and irregular detection base surface caused by the deviation of the flat plate 420. The double-sided guiding unit is arranged along the width direction of the trolley 110 and matches the force structure of the flat plate 420, further improving the running stability of the flat plate 420, making the contact between the flat plate 420 and the material layer more uniform, and improving the flattening effect, thus laying a good base surface foundation for the accurate detection of the end material level detection device 320. The guide unit has a simple overall structure and is easy to install. The limit plate 440 and guide plate 450 can be made of wear-resistant material, which can withstand the impact and wear of sintered ore, adapt to the harsh working conditions in the annular cooler, and have a long service life.

[0038] Furthermore, the bottom end of the flat plate 420 is serrated.

[0039] It should be understood that this structural design can effectively disperse the impact force of sinter on the bottom of the leveling plate 420 during leveling operations, while significantly reducing the material resistance when the leveling plate 420 pushes the wavy material layer, preventing sinter from accumulating at the front end of the leveling plate 420 and improving the efficiency of leveling operations. The serrated structure (in this application, it is a rectangular serrated structure with concave and convex edges) can also slightly comb and disperse agglomerated and accumulated sinter, making the wavy material layer easier to flatten during the leveling process and improving the flatness of the material surface; in addition, the serrated bottom structure has a simple processing technology, and wear-resistant blocks can be added to the serrated parts to further enhance the wear resistance of the bottom of the leveling plate 420, reduce the wear of the leveling plate 420 by the sinter, and extend the service life of the leveling plate 420.

[0040] Furthermore, the cross-section of the steel pipe frame 312 is rectangular.

[0041] It should be noted that the rectangular cross-section steel pipe frame 312 has a larger contact area with the material layer. This ensures that the steel pipe frame 312 can effectively contact the material layer when the material layer height changes, accurately reflecting the change in material level. At the same time, the large contact area will not cause excessive resistance to the material layer pushing the steel pipe frame 312 to rotate. This ensures the sensitivity of the detection device, enabling the pointer to reflect the change in material level height in a timely and accurate manner, thus improving the detection accuracy.

[0042] Furthermore, it also includes a feeding chute 140, which is disposed at the feed inlet and the discharge end is connected to the feed inlet.

[0043] It is important to note that the feed chute 140 enables the sinter to fall precisely and continuously into the loading space 130 of the trolley mechanism 10, preventing the sinter from spilling from the periphery of the feed inlet during the feeding process. This ensures the continuity and stability of the material layer within the loading space 130, providing a uniform initial material layer for subsequent material level detection and leveling operations, and reducing the problem of excessive wavy differences in the material surface caused by uneven feeding.

[0044] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A material level detection system for an annular cooler, characterized in that, This includes a trolley mechanism, an annular cooling shroud, a material level detection mechanism, and a material leveling mechanism; among which, The trolley mechanism has a feed inlet and a loading space, and the annular cooling shroud is located above the trolley mechanism; The material level detection mechanism includes a front-end material level detection device and an end-end material level detection device. The front-end material level detection device, the leveling mechanism, and the end-end material level detection device are all connected to the annular cooling hood and are arranged sequentially at intervals along the trolley running direction. The front-end material level detection device is used to detect the initial material level height. The leveling end of the leveling mechanism is vertically movable to level the material level height. The end-end material level detection device is used to detect the material level height after leveling. The detection ends of the front-end material level detection device and the end-end material level detection device both extend into the loading space to contact the material layer.

2. The material level detection system for the annular cooler according to claim 1, characterized in that, The trolley mechanism includes a trolley and two side panels spaced apart along the width of the trolley. The two side panels are respectively connected to the two sides of the trolley, and the trolley and the two side panels together form the loading space.

3. The material level detection system for the annular cooler according to claim 2, characterized in that, Both the front-end material level detection device and the end-end material level detection device include a rotating shaft, a steel pipe frame, a detection pointer, and a detection scale. The rotating shaft is rotatably connected to the annular cooling shroud and extends out of the annular cooling shroud at both ends. The steel pipe frame extends into the loading space to contact the material layer and is connected to the rotating shaft. The detection scale is connected to the outside of the annular cooling shroud. The detection pointer is connected to the extended end of the rotating shaft and is used to point to the detection scale to detect the material level height.

4. The material level detection system for the annular cooler according to claim 2, characterized in that, The material leveling mechanism includes a frame, a material leveling plate, and a vertical drive assembly. The frame is positioned above the annular cooling shroud, and the vertical drive assembly is connected to the frame. The annular cooling shroud has a through hole through which the drive end of the vertical drive assembly passes. The material leveling plate is connected to the drive end of the vertical drive assembly, and the drive end of the vertical drive assembly is movably positioned vertically to drive the material leveling plate to move vertically for material leveling.

5. The material level detection system for the annular cooler according to claim 4, characterized in that, The vertical drive assembly includes a winch, a main fixed pulley, and two pulley groups spaced apart along the width of the trolley. Each pulley group includes a secondary fixed pulley and a movable pulley. The winch is connected to one side of the frame. The main fixed pulley and the auxiliary fixed pulley are both connected to the top of the frame. The two movable pulleys are respectively connected to the top two sides of the flat plate. The winch is connected to the main fixed pulley, the auxiliary fixed pulley and the movable pulley in sequence by a cable, and drives the flat plate to move vertically by extending and retracting the cable.

6. The material level detection system for the annular cooler according to claim 4, characterized in that, The leveling mechanism also includes two guide units spaced apart along the width of the trolley. Each guide unit includes a limiting plate and a guide plate. The limiting plate is fixed to the inner side of the annular cold cover, and the guide plate is fixed to the inner side of the limiting plate, so as to be disposed between the limiting plate and the leveling plate.

7. The material level detection system for the annular cooler according to claim 4, characterized in that, The bottom end of the flat plate is serrated.

8. The material level detection system for the annular cooler according to claim 3, characterized in that, The cross-section of the steel pipe frame is rectangular.

9. The material level detection system for an annular cooler according to claim 1, characterized in that, It also includes a feeding chute, which is located at the inlet and the outlet is connected to the inlet.

10. The annular cooler material level detection system according to claim 3, characterized in that, The display range of the detection dial is 1.3m to 1.5m.

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