A dryer with a function of hierarchical drying

Abstract

A kind of dryer with grading drying function, the dryer technical field, including: dryer shell, material lifting subassembly, feed inlet, first discharge port, second discharge port and baffle subassembly, dryer shell includes steel structure main body, insulation layer, decorative layer, and three are sequentially arranged from inside to outside to form the drying cavity of shell shape;Material lifting subassembly is set to the bottom end of the inner cavity of dryer shell, for lifting up raw coal material;Feed inlet is set to the lower left of dryer shell.The utility model is through being equipped with multiple baffle in the inner cavity of dryer and being separated into multiple regions, effectively prolongs raw coal drying path and residence time, ensures that raw coal and hot air are fully heat exchanged, reduces the generation of insufficiently dried material;By being equipped with through-hole on baffle and constructing grading dryer mechanism, different granularity raw coal is discharged from different outlet at different time, both avoid small particle excessive drying waste energy consumption, ensure that large particle drying is up to standard, also reduce machine dust suspension amount, avoid dust explosion risk.

Description

Technical Field

[0001] This utility model belongs to the field of dryer technology, specifically relating to a dryer with a graded drying function. Background Technology

[0002] Conventional raw coal dryers are mostly based on an "integrated drying chamber". During operation, a high-temperature drying medium is first generated by a hot air furnace and sent into the drying chamber through an air duct. At the same time, raw coal is continuously fed into the chamber through a feeding device. In the chamber, the material is evenly distributed and moved by a mechanical conveying structure, so that the raw coal and the high-temperature hot air can fully contact each other. Through convection and conduction heat transfer, the moisture in the raw coal is quickly evaporated, thus achieving the purpose of drying the raw coal.

[0003] Existing technology (Chinese Patent No. CN101705131A) discloses a combined drying and dry separation equipment and method for upgrading raw coal. This equipment includes a coal supply system, a hot air system, a drying system, a dust removal and exhaust system, and a dry separation system. The coal supply system uses a raw coal conveying device to supply raw coal to both the hot air system and the drying system. The hot air system is the heat source for the drying system. The drying system is used to dry and dehydrate the raw coal. The dust removal and exhaust system consists of a dust collector and an exhaust fan. The dry separation system includes a dry separator, a circulating fan, and a cyclone dust collector, used to separate the dried raw coal into clean coal, middlings, and gangue. Using this equipment and method not only organically combines dry coal preparation and drying processes, leveraging the advantages of both, but also expands the application range of the equipment, requires less investment, has low production costs, and facilitates the promotion and application of coal upgrading technology.

[0004] Existing coal dryers using an integrated drying chamber are limited by their single-chamber structure, making it impossible to perform graded drying of raw coal. They can only process all materials using a uniform drying mode. Within the integrated drying chamber, the overall residence time of the raw coal is relatively short. Some raw coal may not have fully completed the moisture evaporation process and is discharged from the outlet with the main material, resulting in substandard drying performance. This insufficiently dried raw coal requires secondary reflow drying, significantly increasing the operational complexity of the material conveying system and raising the overall engineering workload and maintenance difficulty of the drying process. Utility Model Content

[0005] To address the shortcomings of existing technologies where the overall residence time of raw coal in the integrated drying chamber is short, some raw coal may fail to complete the moisture evaporation process and be discharged from the outlet with the main material, resulting in substandard drying effects. Such insufficiently dried raw coal requires secondary reflow drying, significantly increasing the operational complexity of the material conveying system and the overall engineering workload and maintenance difficulty of the drying process. This invention provides a dryer with a staged drying function. The dryer's internal cavity is equipped with multi-stage baffles, dividing the cavity into multiple zones. This effectively extends the drying path and actual residence time of the raw coal within the dryer, creating more sufficient contact time and area between the drying hot air and the raw coal particles, ensuring sufficient heat exchange and moisture transfer, fundamentally reducing the generation of insufficiently dried raw coal, and achieving efficient and complete drying of the raw coal. The specific technical solution is as follows: A dryer with a graded drying function includes: a dryer shell, a lifting assembly, a feed inlet, a first discharge outlet, a second discharge outlet, and a baffle assembly. The dryer shell includes a steel structure main body, an insulation layer, and a decorative layer, which are arranged sequentially from the inside to the outside to form a drying cavity in the shape of a shell. The lifting assembly is located at the bottom of the inner cavity of the dryer shell and is used to lift the raw coal material. The feed inlet is located at the lower left of the dryer shell and communicates with the inner cavity of the dryer shell. The first discharge outlet is located at the lower right of the inner cavity of the dryer shell and is used to discharge larger particles of raw coal material after drying. The second discharge outlet is located at the upper right of the inner cavity of the dryer shell and is used to discharge smaller particles of raw coal material after drying. Multiple sets of baffle assemblies are provided, and the multiple sets of baffle assemblies are arranged parallel to each other along the horizontal direction of the inner cavity of the dryer shell.

[0006] In the above technical solution, each set of partition components includes: a partition, a slot, a movable plate, a through hole, an adjusting groove, an adjusting block, and a positioning block. The top of the partition is fixedly installed in the inner cavity of the dryer housing, and the front and rear side walls of the partition are respectively attached to the front and rear sides of the inner wall of the dryer housing. The slot is opened through the partition. The movable plate is slidably embedded in the inner cavity of the slot. A plurality of through holes are provided, and the plurality of through holes are equally spaced on the movable plate. The adjusting groove is opened on the left side wall of the partition. The adjusting block is fixedly installed on the top of the movable plate. The positioning block is fixedly installed on the side wall of the adjusting block, and the positioning block is slidably arranged along the inner cavity of the adjusting groove.

[0007] In the above technical solution, each set of partition components further includes: a side plate, a first positioning hole and a first positioning pin. Two sets of side plates are provided, and the two sets of side plates are installed on the left side wall of the partition in a front-to-back manner. A plurality of first positioning holes are provided, and the plurality of first positioning holes are equidistantly opened along the vertical direction of the side plate. The first positioning pin passes through one set of first positioning holes and the side wall of the positioning block.

[0008] In the above technical solution, the diameter of the through hole on the partition on the left side is larger than the diameter of the through hole on the adjacent partition on the right side.

[0009] In the above technical solution, two sets of shielding components are provided on the right side of the partition, and the two sets of shielding components are arranged correspondingly front and rear. Each set of shielding components includes: an extension arm, a lifting rod, a second positioning hole, a second positioning pin, a drive rod, a baffle, and a handle. The extension arm is vertically and fixedly installed on the right side wall of the partition. The lifting rod slides through the right end of the extension arm in a vertical direction. Several second positioning holes are provided, and the several second positioning holes are equidistantly opened on the lifting rod in a vertical direction. The second positioning pin is inserted into the right end of the extension arm in a horizontal direction, and the second positioning pin passes through the inner cavity of one of the second positioning holes. One end of the drive rod is rotatably connected to the bottom end of the lifting rod. The baffle is rotatably connected to the right side wall of the partition, and the other end of the drive rod is rotatably connected to the baffle. The handle is installed on the top end of the lifting rod.

[0010] In the above technical solution, a guide plate is rotatably provided on the right side of the inner cavity of the dryer housing, and the front and rear side walls of the guide plate are respectively attached to the front and rear sides of the inner wall of the dryer housing.

[0011] In the above technical solution, the guide plate is tilted at an angle by a locking assembly. The locking assembly includes an arc-shaped seat, an arc-shaped groove, a positioning bolt, and a positioning nut. The arc-shaped seat is fixedly installed on the bottom of the right side wall of the guide plate. The arc-shaped groove is formed on the arc-shaped seat. The positioning bolt is fixedly installed on the inner side wall of the dryer housing. The positioning bolt passes through the inner cavity of the arc-shaped groove, and the free end of the positioning bolt is provided with an external thread. The positioning nut is threaded onto the free end of the positioning bolt, and the positioning nut is in contact with the outer wall of the arc-shaped seat.

[0012] In the above technical solution, the lifting assembly includes: a motor, a reducer, a rotating shaft, and lifting plates. The motor is located on the left side of the dryer housing; the reducer is connected to the output end of the motor; the rotating shaft is arranged horizontally in the inner cavity of the dryer housing and is connected to the output end of the motor; the lifting plates are evenly arranged along the side wall of the rotating shaft.

[0013] The above technical solution also includes: an air inlet and an explosion-proof port, wherein the air inlet is connected and disposed on the top left side of the dryer housing; and multiple explosion-proof ports are provided, and the multiple explosion-proof ports are respectively disposed on the dryer housing.

[0014] In the above technical solution, the inner wall of the right side of the dryer shell is inclined upward from left to right.

[0015] The dryer with graded drying function of this utility model has the following advantages compared with the prior art: I. In existing integrated drying chambers, the overall residence time of raw coal is relatively short. Some raw coal fails to fully complete the moisture evaporation process and is discharged from the outlet with the main material, resulting in substandard drying effects. This insufficiently dried raw coal requires secondary reflow drying, significantly increasing the complexity of the material conveying system and the overall drying process's workload and maintenance difficulty. This invention addresses this problem by incorporating multi-stage baffles within the dryer's inner chamber. These baffles divide the dryer's inner chamber into multiple zones, effectively extending the drying path and actual residence time of the raw coal within the dryer. Allowing sufficient time for the drying hot air and raw coal particles to interact ensures adequate heat exchange and moisture transfer, fundamentally reducing the generation of insufficiently dried raw coal and achieving efficient and thorough drying. Simultaneously, since there is no need for secondary reflow drying of substandard raw coal, the operating load and complexity of the material conveying system are significantly reduced, decreasing the overall workload and maintenance costs of the drying process. Furthermore, it avoids excessive crushing of the raw coal due to mechanical action during secondary conveying, ensuring the particle size quality of the finished coal and further improving the economy and stability of the drying operation. II. This utility model constructs a graded drying mechanism for raw coal particles by setting through holes in multi-stage partitions. Specifically, smaller-diameter raw coal particles can migrate to the right through the through holes in the partitions, completing drying while moving with the high-temperature airflow, and are preferentially discharged from the dryer through the second discharge port at the top. Larger-diameter raw coal particles are blocked by the partitions, and after being fully dried in the area on the left side of the partitions, they continue to move to the right from below the partitions with the high-temperature airflow, enhancing the drying effect by extending the displacement path, and are finally discharged through the first discharge port at the bottom. This arrangement based on multi-stage partitions and through holes not only achieves... This system enables graded drying and dehydration of raw coal of different particle sizes, allowing various granular materials to be discharged from different outlets at different times according to the drying process. This avoids energy waste caused by over-drying of small particles while ensuring that large particles are fully dried and meet moisture standards. At the same time, the orderly discharge of small particles with the airflow reduces the amount of dust suspended in the machine, and the directional movement of large particles avoids accumulation and friction. Under these dual effects, the dust concentration inside the dryer is effectively reduced, thus mitigating the risk of dust explosion from a structural design perspective. In addition, graded discharge simplifies the subsequent material screening process, reduces secondary processing steps, and further improves the overall efficiency and economy of the drying operation. Third, in this utility model, the opening height of the through holes on the partition plate is adjustable. The vertical position of the through holes on the partition plate can be flexibly adjusted according to the actual particle size distribution differences of the raw coal being processed, thereby adapting to the grading and drying requirements of raw coal with different particle size ranges. On the one hand, there is no need to replace the entire structure of the partition plate; simply adjusting the height of the through holes can adapt to different batches and different particle sizes of raw coal. On the other hand, the height of the through holes can be dynamically optimized in combination with the drying target, further ensuring the drying uniformity and compliance rate of raw coal with different particle sizes, reducing the problem of unstable drying effect caused by fluctuations in raw material particle size, and reducing equipment replacement and maintenance costs. Fourth, this utility model features a partitioned shielding structure on the right side of the through-hole. This structure allows for selective adjustment of the opening state of the through-hole on the partition, enabling flexible switching between full opening and partial opening. This allows for precise control of the effective area through which raw coal passes, ultimately achieving targeted regulation of the raw coal grading path. On one hand, the opening area of ​​the through-hole can be dynamically adjusted according to the actual processing volume and drying progress of the raw coal. Full opening of the through-hole at high load improves material flow efficiency, while partial opening extends the material residence time at low load or when intensive drying is required, allowing the grading path to adapt to different working conditions. On the other hand, for the drying requirements of specific particle sizes in the raw coal, such as when a certain particle size requires an additional extended drying time, partially shielding the through-hole can guide it to other drying areas, further improving the accuracy of grading and drying, reducing the mismatch discharge of non-target particle sizes, and enhancing the dryer's adaptability to complex raw material conditions, while reducing fluctuations in drying effect caused by a fixed path. V. This utility model features a guide plate between the second discharge port at the top and the first discharge port at the bottom. The guide plate has an adjustable tilt angle. By adjusting its angle, the obstruction range of the discharge channel between the first and second discharge ports can be precisely controlled. After adjustment, the angle can be fixed by a locking mechanism. Ultimately, this allows for flexible control of the guiding path for smaller particle size materials to be discharged to the second discharge port at the top and larger particle size materials to be discharged to the first discharge port at the bottom. This meets the dynamic optimization of the guiding angle under the drying requirements of raw coal with different particle sizes. On the one hand, it can accurately match the guiding requirements according to the actual particle size distribution of the raw coal, avoiding problems such as substandard drying or equipment blockage caused by misdirected material discharge. On the other hand, the combination of adjustable angle and locking function can adapt to the drying conditions of different batches of raw coal and maintain guiding stability after adjustment, reducing angle deviation caused by vibration and further improving the accuracy of graded discharge. In summary, this invention effectively extends the drying path and residence time of raw coal by setting up multiple partitions and dividing the dryer cavity into multiple zones. This ensures sufficient heat exchange between the raw coal and hot air, reduces the generation of insufficiently dried material, eliminates the need for secondary reflow drying, reduces the load on the material conveying system and maintenance costs, and avoids excessive crushing of raw coal during secondary conveying, thus ensuring the particle size quality of the finished product. Furthermore, by setting through-holes in the partitions to construct a graded drying mechanism, raw coal of different particle sizes is discharged from different outlets at different times. This avoids over-drying of small particles, which wastes energy, ensures that large particles meet drying standards, reduces the amount of suspended dust inside the machine, and avoids the risk of dust explosions. It also simplifies the subsequent screening process; the height of the through holes is adjustable, allowing it to adapt to raw coal of different particle sizes without replacing the baffles, ensuring uniform drying and reducing equipment maintenance costs; the partitioned shielding structure on the right side of the through holes can be flexibly adjusted to adapt to different throughputs and drying progress, improving grading accuracy and adaptability to complex working conditions; the guide plate with an adjustable angle between the second discharge port at the top and the first discharge port at the bottom can accurately match the particle size distribution of the raw coal and guide the discharge, avoiding material misdirection and equipment blockage, and can be stably locked after adjustment, further improving the accuracy of grading and discharge, and significantly improving the economy, stability and efficiency of the drying operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the second discharge port of this utility model; Figure 2 for Figure 1 Enlarged view of point A; Figure 3 This is a schematic diagram of the structure of the movable plate of this utility model; Figure 4 This is a schematic diagram of the structure of the baffle of this utility model; Figure 5 This is a left view of the partition of this utility model; Figure 6 for Figure 5 Enlarged view of point B; Figures 1 to 6 In the middle, 100, dryer shell, 1, steel structure main body, 2, insulation layer, 3, decorative layer, 4, motor, 5, reducer, 6, rotating shaft, 7, lifting plate, 8, feed inlet, 9, first discharge outlet, 10, second discharge outlet, 11, air inlet, 12, explosion-proof outlet, 13, partition, 14, slot, 15, moving plate, 16, through hole, 17, adjusting groove, 18, adjusting block, 19, positioning block, 20, side plate, 21, first positioning hole, 22, first positioning pin, 23, extension arm, 24, lifting rod, 25, second positioning hole, 26, second positioning pin, 27, drive rod, 28, baffle, 29, handle, 30, guide plate, 31, arc-shaped seat, 32, arc-shaped groove, 33, positioning bolt, 34, positioning nut. Detailed Implementation

[0017] The following are specific implementation cases and appendices. Figures 1 to 6 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0018] A dryer with a graded drying function includes: a dryer shell 100, a lifting assembly, a feed inlet 8, a first discharge outlet 9, a second discharge outlet 10, and a partition assembly. The inner wall of the right side of the dryer shell 100 is inclined upwards from left to right, thereby achieving better material discharge effect. Undischarged material can still slide back to the bottom for collection via this inclined inner wall, preventing material from sticking to the vertical inner wall. The dryer shell 100 includes a steel structure main body 1, an insulation layer 2, and a decorative layer 3, which are arranged sequentially from the inside to the outside to form a shell-shaped drying chamber. The steel structure main body 1, insulation layer 2, decorative layer 3, air inlet 11, explosion-proof vent 12, and partition 13 are all common components of existing dryers, which only need to meet the functional requirements of their respective dryers; therefore, they will not be described or limited here. This dryer is used in conjunction with existing high-temperature airflow conveying devices, exhaust devices, and dust removal devices after exhaust for drying. These are the supporting equipment and conventional settings for the raw coal dryer, and their respective use is sufficient to meet the usage requirements. The above components will not be described in detail or limited here. The lifting assembly is located at the bottom of the inner cavity of the dryer shell 100 and is used to lift the raw coal material. The feed inlet 8 is located at the lower left of the dryer shell 100 and communicates with the inner cavity of the dryer shell 100. The first discharge port 9 is located at the lower right of the inner cavity of the dryer shell 100 and is used to discharge the larger particles of raw coal material after drying. The second discharge port 10 is located at the upper right of the inner cavity of the dryer shell 100 and is used to discharge the smaller particles of raw coal material after drying. Multiple sets of baffle assemblies are provided, and the multiple sets of baffle assemblies are arranged parallel to each other along the horizontal direction of the inner cavity of the dryer shell 100.

[0019] This invention divides the inner cavity of the dryer into multiple drying zones by arranging multi-stage baffles 13. This design effectively extends the drying path and actual residence time of the raw coal within the cavity, providing more sufficient contact time and area for the drying hot air and raw coal particles. This ensures efficient heat exchange and moisture transfer, reducing the generation of insufficiently dried raw coal at its source and achieving efficient deep drying of the raw coal. Simultaneously, since there is no need for secondary reflow drying of substandard raw coal, it significantly reduces the operating load and complexity of the material conveying system, as well as the overall engineering workload and maintenance costs of the drying process. Furthermore, it avoids excessive crushing of the raw coal due to mechanical action during secondary conveying, ensuring the particle size quality of the finished coal and further enhancing the economy and operational stability of the drying operation.

[0020] Each partition assembly includes: a partition 13, a slot 14, a movable plate 15, a through hole 16, an adjusting groove 17, an adjusting block 18, and a positioning block 19. The top of the partition 13 is fixedly installed in the inner cavity of the dryer housing 100, and the front and rear side walls of the partition 13 are respectively attached to the front and rear sides of the inner wall of the dryer housing 100. The slot 14 is opened through the partition 13. The movable plate 15 is slidably embedded in the inner cavity of the slot 14. Several through holes 16 are provided, and several through holes 16 are equally spaced on the movable plate 15. The adjusting groove 17 is opened on the left side wall of the partition 13. The adjusting block 18 is fixedly installed on the top of the movable plate 15. The positioning block 19 is fixedly installed on the side wall of the adjusting block 18, and the positioning block 19 is slidably arranged along the inner cavity of the adjusting groove 17. The diameter of the through hole 16 on the left partition 13 is larger than the diameter of the through hole 16 on the adjacent right partition 13.

[0021] This invention establishes a graded drying mechanism for raw coal particles by configuring through holes 16 on the multi-stage partitions 13. Specifically, smaller-diameter raw coal particles can pass through the through holes 16 on the partitions 13 and move to the right, completing the drying process while following the high-temperature airflow, and are preferentially discharged from the top second discharge port 10. Larger-diameter raw coal particles are blocked by the partitions 13, and after being fully dried in the area on the left side of the partitions 13, they continue to move to the right below the partitions 13 with the high-temperature airflow, further enhancing the drying effect by extending the displacement path, and are finally discharged from the bottom first discharge port 9.

[0022] By utilizing the multi-stage baffles 13 and through holes 16, not only is graded drying and dehydration of raw coal of different particle sizes achieved, but also various particulate materials are discharged from different outlets at different times according to the drying progress. This prevents energy waste caused by over-drying of small particles and ensures that large particles are fully dried and meet the moisture standards. At the same time, the orderly discharge of small particles with the airflow reduces the amount of dust suspended in the machine, and the directional movement of large particles avoids accumulation and friction. This dual effect effectively reduces the dust concentration in the dryer and avoids the risk of dust explosion from the structural design. In addition, the graded discharge simplifies the subsequent material screening process, reduces secondary processing steps, and further improves the efficiency and economy of the overall drying operation.

[0023] Each partition assembly also includes: a side plate 20, a first positioning hole 21 and a first positioning pin 22. Two sets of side plates 20 are provided, and the two sets of side plates 20 are installed on the left side wall of the partition 13 in a front-to-back manner. Several first positioning holes 21 are provided, and several first positioning holes 21 are equally spaced along the vertical direction of the side plate 20. The first positioning pin 22 passes through one set of first positioning holes 21 and the side wall of the positioning block 19.

[0024] When flexibly adjusting the vertical position of the through hole 16 on the partition plate 13 according to the actual particle size distribution differences of the raw coal: pull out the first positioning pin 22 from the corresponding first positioning hole 21 and positioning block 19, move the positioning block 19 upward so that it drives the adjusting block 18 to move upward along the adjusting groove 17, so as to drive the moving plate 15 to move upward relative to the inner cavity of the slot 14, that is, to adjust the position of the through hole 16 relative to the partition plate 13 in the vertical direction; after adjustment, reinsert the first positioning pin 22 into the corresponding first positioning hole 21 and positioning block 19 after adjustment, so as to lock the position of the positioning block 19, adjusting block 18, and through hole 16 after adjustment.

[0025] In this invention, the height of the through holes 16 on the partition plate 13 is adjustable. The vertical arrangement of the through holes 16 on the partition plate 13 can be flexibly changed according to the particle size distribution characteristics of the raw coal to be processed, thereby precisely adapting to the grading and drying requirements of raw coal in different particle size ranges. On the one hand, without replacing the entire structure of the partition plate 13, simply adjusting the height of the through holes 16 can meet the processing requirements of different batches and different particle sizes of raw coal, significantly improving the equipment's adaptability to raw materials. On the other hand, the height of the through holes 16 can be dynamically optimized based on specific drying targets (such as different moisture control standards), further ensuring the uniformity and compliance rate of raw coal of different particle sizes after drying, effectively alleviating the problem of unstable drying effect caused by fluctuations in raw material particle size, while reducing equipment replacement frequency and maintenance investment, and lowering overall operation and maintenance costs.

[0026] Two sets of shielding components are provided on the right side of the partition 13, and the two sets of shielding components are arranged correspondingly front and rear. Each set of shielding components includes: an extension arm 23, a lifting rod 24, a second positioning hole 25, a second positioning pin 26, a drive rod 27, a baffle 28, and a handle 29. The extension arm 23 is vertically and fixedly installed on the right side wall of the partition 13. The lifting rod 24 slides through the right end of the extension arm 23 in a vertical direction. Several second positioning holes 25 are provided, and several second positioning holes 25 are equally spaced in a vertical direction on the lifting rod 24. The second positioning pin 26 is inserted into the right end of the extension arm 23 in a horizontal direction, and the second positioning pin 26 passes through the inner cavity of one of the second positioning holes 25. One end of the drive rod 27 is rotatably connected to the bottom end of the lifting rod 24. The baffle 28 is rotatably connected to the right side wall of the partition 13, and the other end of the drive rod 27 is rotatably connected to the baffle 28. The handle 29 is installed on the top end of the lifting rod 24.

[0027] This invention features a partitioned shielding structure on the right side of the through-hole 16. This structure allows for selective control of the opening state of the through-hole 16 on the partition 13, enabling flexible switching between fully open and partially open states. This allows for precise control of the effective area through which raw coal passes through the through-hole 16, ultimately achieving targeted adjustments to the raw coal grading path. On one hand, it allows for dynamic adjustment of the opening area of ​​the through-hole 16 based on the actual raw coal processing volume and drying progress: under high-load conditions, the through-hole 16 is fully opened to improve material flow efficiency; under low load conditions or when enhanced drying is required, the through-hole 16 is partially opened to extend the material's residence time within the cavity, allowing the grading path to better adapt to different operating conditions. On the other hand, for drying requirements of specific particle sizes in raw coal, such as the need for additional drying time for a certain particle size, the through holes 16 can be partially blocked to guide such particles to other drying areas, thereby further improving the accuracy of graded drying and reducing the mismatch of non-target particle size particles. At the same time, this design also enhances the dryer's adaptability to complex raw material conditions and effectively reduces the problem of drying effect fluctuations caused by fixed paths.

[0028] A guide plate 30 is rotatably mounted on the right side of the inner cavity of the dryer housing 100, and the front and rear side walls of the guide plate 30 are respectively attached to the front and rear sides of the inner wall of the dryer housing 100. The guide plate 30 is tilted at an adjustable angle by a locking assembly, which includes an arc-shaped seat 31, an arc-shaped groove 32, a positioning bolt 33, and a positioning nut 34. The arc-shaped seat 31 is fixedly installed on the bottom end of the right side wall of the guide plate 30; the arc-shaped groove 32 is formed on the arc-shaped seat 31; the positioning bolt 33 is fixedly installed on the inner side wall of the dryer housing 100, and the positioning bolt 33 passes through the inner cavity of the arc-shaped groove 32, and the free end of the positioning bolt 33 is provided with an external thread; the positioning nut 34 is threaded onto the free end of the positioning bolt 33, and the positioning nut 34 is attached to the outer wall of the arc-shaped seat 31.

[0029] This invention features a guide plate 30 between the second discharge port 10 at the top and the first discharge port 9 at the bottom of the dryer, with the tilt angle of the guide plate 30 being flexibly adjustable. By adjusting the angle of the guide plate 30, the obstruction range of the discharge channel between the first discharge port 9 and the second discharge port 10 can be precisely controlled. After the angle adjustment is completed, its position can be fixed by a locking mechanism, ultimately achieving flexible control of the guiding path of "smaller particle size materials being discharged to the second discharge port 10 at the top and larger particle size materials being discharged to the first discharge port 9 at the bottom," meeting the dynamic optimization of the guiding angle under the drying requirements of raw coal with different particle sizes. On the one hand, it can accurately match the guiding requirements according to the actual particle size distribution of the raw coal, effectively avoiding the problem of substandard drying caused by misdirected material discharge, while preventing material from clogging the discharge channel; on the other hand, the combination of the adjustable angle feature and the locking function can adapt to the drying conditions of different batches of raw coal, and maintain a stable guiding state after angle adjustment, reducing the angle deviation caused by equipment vibration, further improving the accuracy of graded discharge, and ensuring the continuous and stable operation of the dryer.

[0030] The material lifting assembly includes: a motor 4, a reducer 5, a rotating shaft 6, and lifting plates 7. The motor 4 is located on the left side of the dryer housing 100; the reducer 5 is connected to the output end of the motor 4; the rotating shaft 6 is horizontally positioned within the dryer housing 100 and connected to the output end of the motor 4; the lifting plates 7 are evenly distributed along the side wall of the rotating shaft 6. The motor 4 is a commercially available self-locking motor with a lockable output end. When stopped, the output end is self-locking and will not rotate under external force. The motor 4 is also a commercially available forward / reverse motor, and its output end can rotate in either direction according to usage requirements. It is sufficient to meet the aforementioned usage requirements, and will not be elaborated or limited here. The motor only needs to meet the usage requirements of this dryer, and will not be elaborated or limited here. The reducer 5 is used in conjunction with the motor 4 and is a commercially available general-purpose model. This solution also includes: an air inlet 11 and an explosion-proof port 12. The air inlet 11 is connected and installed on the top left side of the dryer housing 100. Multiple explosion-proof ports 12 are provided, and the multiple explosion-proof ports 12 are respectively installed on the dryer housing 100. The material to be dried is conveyed to the inner cavity of the dryer through the feed inlet 8. Under the action of the motor 4, reducer 5, rotating shaft 6 and lifting plate 7, the lifting plate 7 lifts the raw coal, so that it can fully contact the high-temperature airflow entering through the air inlet 11, thereby achieving the drying of the raw coal by the high-temperature airflow.

[0031] The working principle of a dryer with a graded drying function in this embodiment is as follows: The material to be dried is conveyed into the inner cavity of the dryer through the feed inlet 8. Under the action of the motor 4, reducer 5, rotating shaft 6 and lifting plate 7, the lifting plate 7 lifts the raw coal so that it can fully contact the high-temperature airflow entering through the air inlet 11, thereby achieving the drying of the raw coal by the high-temperature airflow. Under the blocking effect of the multi-stage baffles 13, raw coal particles with a diameter larger than the aperture of the through holes 16 on the baffles 13 are intercepted in the left area of ​​the baffles 13. After the raw coal in this area is fully dried, it moves continuously to the right from below the baffles 13 with the high-temperature airflow. The drying effect is further enhanced by the extension of the displacement path, and it is finally discharged through the first discharge port 9 at the bottom. Raw coal particles with a diameter smaller than the aperture of the through holes 16 can migrate to the right through the through holes 16 on the baffles 13. They are dried while moving with the high-temperature airflow and are preferentially discharged from the dryer through the second discharge port 10 at the top. In addition, since the aperture of the through holes 16 on the baffles 13 on the left is larger than the aperture of the through holes 16 on the right, it can be ensured that large-diameter raw coal can be dried layer by layer under the grading effect of the through holes 16 with different apertures, ensuring that raw coal of all particle sizes achieves a fully dried effect. When flexibly adjusting the vertical position of the through hole 16 on the partition plate 13 according to the actual particle size distribution differences of the raw coal: pull out the first positioning pin 22 from the corresponding first positioning hole 21 and positioning block 19, move the positioning block 19 upward so that it drives the adjusting block 18 to move upward along the adjusting groove 17, so as to drive the moving plate 15 to move upward relative to the inner cavity of the slot 14, that is, to adjust the vertical position of the through hole 16 relative to the partition plate 13; after adjustment, reinsert the first positioning pin 22 into the corresponding first positioning hole 21 and positioning block 19 after adjustment to lock the position of the positioning block 19, adjusting block 18, and through hole 16 after adjustment. When adjusting the obstruction on the right side of the through hole 16 and the obstructed area: pull the second positioning pin 26 outward to disengage it from the corresponding second positioning hole 25. Drive the handle 29 to adjust the vertical position of the lifting rod 24 relative to the extension arm 23, so that the drive rod 27 drives the baffle 28 to rotate and adjust, thus adjusting the obstruction of the through hole 16 by the baffle 28. Alternatively, the obstruction of the right side of the through hole 16 can be adjusted by the two sets of baffles 28 individually. After adjustment, reinsert the second positioning pin 26 into the cavity of the corresponding second positioning hole 25 to lock the position of the lifting rod 24 and the baffle 28 after adjustment, thus locking the baffle 28 relative to the through hole 16 after obstruction adjustment. When adjusting the relative rotation of the guide plate 30: unscrew the positioning nut 34 to disengage it from the side wall of the arc-shaped seat 31, drive the guide plate 30 to rotate around its rotational connection with the main steel structure 1, thereby driving the arc-shaped seat 31 and the arc-shaped groove 32 to rotate relative to the positioning bolt 33, thus adjusting the tilt angle of the guide plate 30; after adjustment, screw the positioning nut 34 back into the free end of the positioning bolt 33 and make it press against the side wall of the arc-shaped seat 31, thereby locking the arc-shaped seat 31 relative to the position of the positioning bolt 33 after adjustment, thus locking the position of the guide plate 30 after adjustment. This invention effectively extends the drying path and residence time of raw coal by setting multiple partitions 13 in the inner cavity of the dryer, ensuring sufficient heat exchange between the raw coal and hot air, reducing the generation of insufficiently dried material, eliminating the need for secondary reflow drying, reducing the load and maintenance costs of the material conveying system, and preventing excessive crushing of raw coal during secondary conveying, thus ensuring the particle size quality of the finished product. Furthermore, by setting through holes 16 in the partitions 13 to construct a graded drying mechanism, raw coal of different particle sizes is discharged from different outlets at different times. This avoids excessive drying of small particles, ensuring that large particles meet drying standards, reducing the amount of suspended dust inside the machine, avoiding the risk of dust explosion, and simplifying the process. The screening process continues; the height of the through-hole 16 is adjustable, allowing it to adapt to raw coal of different particle sizes without replacing the partition 13, ensuring uniform drying and reducing equipment maintenance costs; the partition shielding structure on the right side of the through-hole 16 can be flexibly adjusted to adapt to different throughputs and drying progress, improving grading accuracy and adaptability to complex working conditions; the guide plate 30 with an adjustable angle between the top second discharge port 10 and the bottom first discharge port 9 can accurately match the particle size distribution of the raw coal for guiding the discharge, avoiding material misdirection and equipment blockage, and can be stably locked after adjustment, further improving the accuracy of grading and discharge, and significantly improving the economy, stability and efficiency of the drying operation.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dryer with a graded drying function, characterized in that: include: The dryer housing (100) includes a steel structure body (1), a heat insulation layer (2), and a decorative layer (3), which are arranged from the inside to the outside to form a drying cavity in the shape of a shell; The lifting assembly is located at the bottom of the inner cavity of the dryer shell (100) and is used to lift the raw coal material. The feed inlet (8) is located at the lower left of the dryer housing (100) and communicates with the inner cavity of the dryer housing (100); The first discharge port (9) is located in the lower right of the inner cavity of the dryer shell (100) and is used to discharge larger particles of raw coal after drying. The second discharge port (10) is located on the upper right side of the inner cavity of the dryer shell (100) and is used to discharge smaller particles of raw coal after drying. The partition assembly is provided in multiple sets, and the multiple sets of the partition assembly are arranged parallel to each other along the horizontal direction of the inner cavity of the dryer housing (100).

2. A dryer with a graded drying function according to claim 1, characterized in that: Each of the aforementioned partition assemblies includes: Partition (13), the top of the partition (13) is fixedly installed in the inner cavity of the dryer housing (100), and the front and rear side walls of the partition (13) are respectively attached to the front and rear sides of the inner wall of the dryer housing (100); A slot (14) is formed through the partition (13); A movable plate (15) is slidably embedded in the cavity of the slot (14); A plurality of through holes (16) are provided, and the plurality of through holes (16) are equally spaced on the movable plate (15); Adjustment groove (17) is provided on the left side wall of the partition (13); Adjustment block (18), which is fixedly installed on the top of the movable plate (15); Positioning block (19) is fixedly installed on the side wall of the adjusting block (18), and the positioning block (19) is slidably arranged along the inner cavity of the adjusting groove (17).

3. A dryer with a graded drying function according to claim 2, characterized in that: Each of the aforementioned partition assemblies also includes: Side plate (20), the side plate (20) is provided in two sets, the two sets of side plates (20) are installed on the left side wall of the partition (13) in a front-to-back correspondence; The first positioning hole (21) is provided in a plurality of such holes, and the plurality of the first positioning holes (21) are equally spaced along the vertical direction of the side plate (20); The first positioning pin (22) passes through one of the first positioning holes (21) and the side wall of the positioning block (19).

4. A dryer with a graded drying function according to claim 2, characterized in that: The diameter of the through hole (16) on the partition (13) on the left side is larger than the diameter of the through hole (16) on the adjacent partition (13) on the right side.

5. A dryer with a graded drying function according to claim 2, characterized in that: Two sets of shielding components are provided on the right side of the partition (13), and the two sets of shielding components are arranged correspondingly front and rear. Each set of shielding components includes: An extension arm (23) is vertically and fixedly installed on the right side wall of the partition (13); The lifting rod (24) slides vertically through the right end of the extension arm (23); The second positioning hole (25) is provided in a plurality of such holes, and the plurality of the second positioning holes (25) are equally spaced along the vertical direction on the lifting rod (24); The second positioning pin (26) is inserted horizontally into the right end of the extension arm (23) and passes through one of the second positioning holes (25). Drive rod (27), one end of which is rotatably connected to the bottom end of lifting rod (24); A baffle (28) is rotatably connected to the right side wall of the partition (13), and the other end of the drive rod (27) is rotatably connected to the baffle (28); Handle (29), which is mounted on the top of the lifting rod (24).

6. A dryer with a graded drying function according to claim 1, characterized in that: A guide plate (30) is rotatably provided on the right side of the inner cavity of the dryer housing (100), and the front and rear side walls of the guide plate (30) are respectively attached to the front and rear sides of the inner wall of the dryer housing (100).

7. A dryer with a graded drying function according to claim 6, characterized in that: The guide plate (30) is tilted at an angle by a locking assembly, the locking assembly comprising: Arc-shaped seat (31), the arc-shaped seat (31) is fixedly installed at the bottom of the right side wall of the guide plate (30); An arc-shaped groove (32) is formed on the arc-shaped seat (31); Positioning bolt (33) is fixedly installed on the inner side wall of the dryer housing (100). The positioning bolt (33) penetrates the inner cavity of the arc groove (32), and the free end of the positioning bolt (33) is provided with an external thread. The positioning nut (34) is threaded onto the free end of the positioning bolt (33), and the positioning nut (34) is in contact with the outer wall of the arc-shaped seat (31).

8. A dryer with a graded drying function according to claim 1, characterized in that: The material lifting assembly includes: Motor (4), the motor (4) is located on the left side of the dryer housing (100); A speed reducer (5) is connected to the output end of the motor (4); A rotating shaft (6) is arranged horizontally in the inner cavity of the dryer housing (100), and the rotating shaft (6) is connected to the output end of the motor (4); The lifting plate (7) is evenly arranged along the side wall of the rotating shaft (6).

9. A dryer with a graded drying function according to claim 1, characterized in that: Also includes: An air inlet (11) is connected to the left side of the top of the dryer housing (100); Explosion-proof port (12), multiple explosion-proof ports (12) are provided, and multiple explosion-proof ports (12) are respectively provided on the dryer housing (100).

10. A dryer with a graded drying function according to claim 1, characterized in that: The inner wall of the right side of the dryer housing (100) is inclined upward from left to right.

Images