Capsule drying apparatus

Abstract

This invention discloses a capsule drying device, which relates to the field of capsule drying technology. The capsule drying device includes a base plate and a roller lifting structure. The roller lifting structure is positioned above the base plate and is designed to adapt to the easily broken and sticky characteristics of capsules, forming a uniform material curtain and reducing the breakage rate, thus achieving efficient and stable drying. The capsule drying device features a roller lifting structure, which, through the coordinated action of adjusting and transmission components, can drive all lifting components to synchronously adjust to a safe throwing angle of 6° to 18°. Combined with an L-shaped shovel-shaped lifting plate structure, it achieves gentle and uniform throwing of capsules, effectively adapting to the easily broken characteristics of capsules, avoiding collision damage caused by excessive throwing or accumulation, significantly reducing the capsule breakage rate and increasing the yield, thus solving the problem of capsule breakage caused by the fixed lifting angle in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of capsule drying technology, specifically to a capsule drying device. Background Technology

[0002] In the capsule production and processing, drying is a crucial step to ensure product quality and prevent capsule sticking and mold growth. Currently, the mainstream drum-type capsule drying equipment in the industry generally adopts a fixed material lifting structure and a single hot air supply method, resulting in poor overall automation and drying uniformity, making it difficult to adapt to the process characteristics of capsules, which are fragile, prone to sticking to the walls, and highly heat-sensitive.

[0003] As shown in CN223090960U, a patent disclosed in Patent Hub, the lifting plates of existing capsule drying devices are mostly fixed structures, which cannot dynamically adjust the lifting angle according to the moisture content of the capsules and the drying stage. This easily leads to uneven material distribution, local accumulation, and insufficient drying. Furthermore, the lifting plates lack reasonable ventilation structures and anti-sticking treatments, causing capsules to easily adhere to the plates and break during tumbling, resulting in a low yield. Simultaneously, the hot air circulation path of such equipment is singular, mostly a co-current drying mode, with limited hot air penetration and heat exchange efficiency, easily leading to problems such as capsules being dry on the outside but wet on the inside, and uneven drying. The sealing effect at the end of the equipment is poor, easily causing hot air leakage and backflow of external moisture, further affecting drying stability. In addition, the existing devices have high friction in the support structure of the rollers, lacking wear-resistant and friction-reducing designs, making them prone to wear and vibration during long-term operation. Moreover, the lack of online temperature and humidity monitoring and linkage adjustment mechanisms makes it difficult to achieve precise control of drying parameters, easily leading to over-drying or incomplete drying.

[0004] In response to the problems of existing technologies, such as the inability to adjust the lifting angle, easy breakage and adhesion of capsules to the wall, low hot air utilization, poor operational stability, and insufficient drying precision, there is an urgent need for a capsule drying device with a reasonable structure, adjustable and controllable operation, and stable operation to meet the production needs of efficient, low-loss, and uniform drying of capsules in the pharmaceutical field. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a capsule drying device that solves the problems of existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a capsule drying device, comprising a base plate, and further comprising: The roller lifting structure is located above the base plate and is used to adapt to the process characteristics of capsules that are easy to break and stick to the wall, forming a uniform material curtain and reducing the breakage rate, so as to achieve efficient and stable drying. The roller lifting structure includes a drying roller, which is positioned above the base plate. The outer wall of the drying roller is provided with an adjusting component and a transmission component, which are connected to the adjusting component. The drying roller is connected to a lifting component via the transmission component. A driven toothed ring is fixedly connected to the outer wall of the drying roller, and sealing flanges are fixedly connected to both ends of the drying roller.

[0007] Preferably, the adjusting component includes a hinge seat, which is fixedly connected to the outer wall of the drying drum. A hydraulic cylinder is hinged to the outer wall of the hinge seat. A connecting bolt is fixedly connected to one end of the hydraulic cylinder. A slide is hinged to the outer wall of the connecting bolt. An arc-shaped slide plate is slidably connected to the outer wall of the slide. A drive shaft is fixedly connected to the outer wall of the slide. This is used to achieve synchronous and precise adjustment of the angle of the lifting component, and the adjustment angle is limited to the safe dispensing range of the capsule.

[0008] Preferably, the transmission component includes an arc-grooved wheel, the outer wall of which has a limiting groove, and an adjusting toothed ring is slidably connected to the inner wall of the arc-grooved wheel. The outer wall of the arc-grooved wheel has a limiting arc groove, and the adjusting toothed ring meshes with the adjusting toothed plate of the lifting component to achieve synchronous and same-angle adjustment of all lifting components.

[0009] Preferably, the lifting component includes an adjusting toothed plate, and a shovel-shaped lifting plate is fixedly connected to the outer wall of the adjusting toothed plate. The shovel-shaped lifting plate has an L-shaped structure, and a coating groove is formed on the outer wall of the shovel-shaped lifting plate. The outer wall of the coating groove has double rows of staggered waist-shaped holes, and the opening rate of the waist-shaped holes is controlled at % to %, to ensure uniform hot air penetration without reducing structural strength. The surface of the shovel-shaped lifting plate is coated with a food-grade non-stick coating.

[0010] Preferably, a frame is fixedly connected to the top of the base plate, a feed end cylinder is fixedly connected to the top of the frame, and a discharge end cylinder is fixedly connected to the top of the frame. The feed end cylinder and the discharge end cylinder are respectively sealed to the drying drum through sealing flanges to prevent hot air leakage and moisture backflow.

[0011] Preferably, a feeding hopper is fixedly connected to the outer wall of the feeding end cylinder, and an air collecting box and a dehumidifying fan are fixedly connected to the outer wall of the feeding end cylinder. The dehumidifying fan is connected to the outside of the air collecting box to discharge the hot and humid air inside the drying drum and prevent the capsules from becoming damp again.

[0012] Preferably, a hot air distribution box and a heating fan are fixedly connected to the outer wall of the discharge end cylinder. The heating fan is installed outside the hot air distribution box and is used to send temperature-controlled drying hot air into the drying drum to form a counter-current drying effect with the dehumidification fan. A discharge cylinder is fixedly connected to the bottom end of the discharge end cylinder, and an electrically controlled valve is fixedly connected to the inner wall of the discharge cylinder.

[0013] Preferably, a bracket is fixedly connected to the top of the base plate, a roller bearing seat is fixedly connected to the top of the bracket, a roller body is rotatably connected to the outer wall of the roller bearing seat, the outer wall of the roller body is slidably connected to the outer wall of the arc groove wheel, and the surfaces of the roller body and the arc groove wheel are treated with smooth wear resistance to reduce friction loss and improve operational stability.

[0014] Preferably, a support frame is fixedly connected to the outer wall of the base plate, a servo motor is fixedly connected to the top of the support frame, and a reducer is fixedly connected to the output end of the servo motor via a coupling.

[0015] Preferably, the reducer is fixedly connected to the outer wall of the support frame by bolts, and the output end of the reducer is fixedly connected to a rotating shaft by a coupling. One end of the rotating shaft is fixedly connected to a transmission gear, and the outer wall of the transmission gear meshes with the driven gear ring to drive the drying drum to rotate smoothly.

[0016] This invention provides a capsule drying apparatus. Compared with the prior art, it has the following advantages: 1. This capsule drying device is equipped with a roller lifting structure. Through the coordinated operation of the adjusting and transmission components, all lifting components can be driven to synchronously adjust to a safe throwing angle of 6° to 18°. Combined with the L-shaped shovel lifting plate structure, it can achieve gentle and uniform throwing of capsules, which can effectively adapt to the characteristics of capsules being fragile and easily broken. It avoids collision damage caused by excessive throwing or accumulation, significantly reduces the capsule breakage rate and improves the yield, and solves the problem of capsules being easily damaged due to the fixed lifting angle in the existing technology.

[0017] 2. The capsule drying device is equipped with a roller lifting structure. By opening double rows of staggered waist-shaped holes with an opening rate of 20% to 30% on the L-shaped shovel lifting plate, the hot air penetration is greatly improved while ensuring the structural strength of the lifting plate. Combined with the counter-current heat exchange mode, the capsule forms a thin curtain of material and fully contacts the hot air, so as to achieve uniform heating inside and outside of the capsule. This effectively solves the defects of traditional devices such as poor hot air penetration, easy to have dry outside and wet inside, and insufficient drying, and significantly improves drying uniformity and drying efficiency.

[0018] 3. The capsule drying device is equipped with a drum lifting structure. By applying a food-grade anti-stick coating to the coating groove of the shovel-shaped lifting plate, it can effectively prevent high-humidity capsules from adhering to the plate and clumping on the wall, ensuring a continuous and smooth drying process. At the same time, this structure, together with the wear-reducing support roller and the end sealing structure, ensures the stable operation of the drying drum, improves the long-term operational stability of the equipment, and specifically solves the problems of easy capsule sticking to the wall and poor equipment reliability in existing technologies. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the roller lifting structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a cross-sectional view of the transmission component of the present invention; Figure 6 This is a schematic diagram of the material lifting component of the present invention; Figure 7 This is a side view of the lifting component of the present invention; In the diagram: 1. Base plate; 2. Frame; 3. Feed end cylinder; 4. Conveying hopper; 5. Drum lifting structure; 51. Drying drum; 52. Adjusting component; 521. Hinge seat; 522. Hydraulic cylinder; 523. Connecting bolt; 524. Slide seat; 525. Arc-shaped slide plate; 526. Drive shaft; 53. Transmission component; 531. Arc-grooved wheel; 532. Limiting groove; 533. Adjusting gear ring; 534. Limiting arc groove; 54. 541. Lifting components; 542. Shovel-shaped lifting plate; 543. Coating tank; 544. Waist-shaped hole; 545. Adjusting toothed plate; 56. Driven toothed ring; 57. Sealing connection flange; 6. Exhaust fan; 7. Discharge end cylinder; 8. Heating fan; 9. Bracket; 10. Roller bearing seat; 11. Roller; 12. Support frame; 13. Servo motor; 14. Reducer; 15. Coupling; 16. Transmission gear; 17. Discharge cylinder. Detailed Implementation

[0020] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] As described in the background section, the existing capsule drying device has a large frictional support structure and lacks wear-resistant design. Long-term operation is prone to wear and vibration. In addition, it is not equipped with an online temperature and humidity monitoring and linkage adjustment mechanism, making it difficult to achieve precise control of drying parameters and easily leading to over-drying or incomplete drying.

[0022] To solve this technical problem, the present invention provides a capsule drying device for use in piston pin heat treatment.

[0023] For details, please refer to Figure 1 - Figure 7 As shown, the capsule drying device specifically includes a base plate 1, and also includes the following core components. These components work together to achieve efficient and low-damage drying of the capsules: The roller lifting structure 5, located above the base plate 1, is the core structure of this device, adapting to the characteristics of capsules that are lightweight, easily broken, prone to sticking to the wall, and highly heat-sensitive. This structure, through the precise movement of the lifting component 54, evenly disperses the capsules to form a thin curtain of material, significantly increasing the contact area between the capsules and the hot air. Simultaneously, it effectively avoids capsule collision and breakage, ultimately achieving efficient and stable drying. This specifically addresses the industry pain points of high capsule breakage rates and uneven drying in existing drying devices.

[0024] The drum lifting structure 5 includes a drying drum 51, which is horizontally arranged above the base plate 1 and coaxially arranged with the feed end cylinder 3 and the discharge end cylinder 7 to form a closed drying chamber. The drying drum 51 is made of food-grade stainless steel, and its inner wall is precision smoothed to effectively prevent capsules from sticking to the wall and scratching it. Two sets of adjusting components 52 are symmetrically arranged on its outer wall. The two sets of adjusting components 52 are evenly distributed around the circumference of the drying drum 51 to ensure that the lifting component 54 is subjected to balanced force and moves synchronously when adjusted. A transmission component 53 is installed on the outer wall of the drying drum 51 at the position corresponding to the adjusting component 52. The transmission component 53 is fixedly connected to the adjusting component 52 to realize precise power transmission. The drying drum 51 is connected to the lifting component 54 through the transmission component 53, which drives the lifting component 54 to adjust the tilt angle synchronously. A driven gear ring 55 is fixedly connected to the middle of the outer wall of the drying drum 51. The driven gear ring 55 meshes with the transmission gear 16 to provide power for the smooth rotation of the drying drum 51. Sealing flanges 56 are symmetrically fixedly connected to both ends of the drying drum 51. The flanges are made of alloy material with excellent sealing performance and are precisely connected to the flange interfaces of the feed end cylinder 3 and the discharge end cylinder 7 to ensure the airtightness of the drying chamber and prevent hot air leakage and moisture backflow.

[0025] The adjusting component 52 includes a hinge seat 521, which is fastened to the outer wall of the drying drum 51 by high-strength bolts. A small servo hydraulic cylinder 522 is hinged to the outer wall of the hinge seat 521 by a pin. This hydraulic cylinder has the advantages of precise stroke and smooth operation, and is fully adapted to the low-speed and precise adjustment requirements of capsule drying. One end of the piston rod of the hydraulic cylinder 522 is fixedly connected to a connecting bolt 523 by a thread. The outer wall of the connecting bolt 523 is hinged to a slide seat 524 by a bearing. The slide seat 524 slides in cooperation with the groove of the arc-shaped slide plate 525. The arc-shaped slide plate 525 has the same curvature as the outer wall of the drying drum 51 and is welded and fixed to the outer wall of the drying drum 51, which plays a precise limiting and guiding role in the sliding of the slide seat 524. A drive shaft 526 is fixedly connected to the outer wall of the slide 524 via a key. The drive shaft 526 passes through the wall of the drying drum 51 and is fixedly connected to the transmission component 53. It is used to realize the synchronous and precise adjustment of the angle of the lifting component 54. The adjustment angle is strictly limited to the safe capsule throwing range of 6° to 18°. This avoids the capsules from being thrown too high and breaking due to excessive angle, and also prevents the capsules from being thrown unevenly and drying unevenly due to excessive angle.

[0026] The transmission component 53 includes an arc-grooved wheel 531, which is fixedly sleeved on the outer wall of the drying drum 51 and rotates synchronously with the drying drum 51. An annular limiting groove 532 is circumferentially formed on the outer wall of the arc-grooved wheel 531. This limiting groove 532 slides in cooperation with the outer wall of the support roller body 11, providing stable support and axial limiting for the drying drum 51, preventing displacement during operation. An annular sliding groove is formed on the inner wall of the arc-grooved wheel 531, and an adjusting toothed ring 533 is slidably connected within the groove. The adjusting toothed ring 533 can slide circumferentially along the inner wall of the arc-grooved wheel 531. A limiting arc groove 534 communicating with the sliding groove is formed on the outer wall of the arc-grooved wheel 531 to limit the sliding stroke of the adjusting toothed ring 533 and prevent over-adjustment. The inner wall of the adjusting toothed ring 533 is provided with gear teeth, which mesh with the adjusting toothed plate 544 of the lifting component 54 for transmission. When the adjusting toothed ring 533 slides along the arc groove wheel 531, it can drive all the adjusting toothed plates 544 to rotate synchronously, thereby realizing the synchronous and same angle adjustment of all the lifting components 54, ensuring that the throwing trajectory of all the capsules in the drying drum 51 is consistent, and ensuring uniform drying effect.

[0027] Twelve sets of lifting components 54 are evenly arranged in a circumferential array along the inner wall of the drying drum 51, with an included angle of 30° between the centers of adjacent lifting components 54. This design ensures uniform capsule distribution while preventing capsules from colliding and breaking due to excessive density of the lifting components 54. Each lifting component 54 includes an adjusting toothed plate 544. An L-shaped shovel-shaped lifting plate 541 is welded and fixed to the outer wall of the adjusting toothed plate 544. The vertical section of the shovel-shaped lifting plate 541 is fixed to the adjusting toothed plate 544, while the horizontal section serves as the shovel end, used for smoothly scooping and distributing capsules. The L-shaped structure effectively prevents capsules from slipping during distribution and reduces impact damage between capsules and the lifting plate. The outer wall of the shovel-shaped lifting plate 541 has evenly distributed coating grooves 542. The coating grooves 542 are coated with a food-grade polytetrafluoroethylene (PTFE) anti-stick coating with a thickness of 0.1 to 0.2 mm and a friction coefficient ≤ 0.1. This effectively prevents capsules from sticking to the wall and avoids coating peeling and contamination of the capsules. The outer wall of the coating tank 542 is provided with double rows of staggered waist-shaped holes 543. The long axis of the waist-shaped holes 543 is parallel to the length direction of the shovel-shaped lifting plate 541. Both ends are provided with arc transitions of R≥4mm to avoid sharp edges scratching the capsule. The opening rate of the waist-shaped holes is strictly controlled between 20% and 30%. This opening rate can ensure that the hot air penetrates evenly, so that the capsule is heated evenly inside and out, solving the problem of "dry outside and wet inside". It can also ensure the structural strength of the shovel-shaped lifting plate 541 and avoid deformation of the lifting plate due to too many openings.

[0028] The base plate 1 is welded from high-strength steel plate, providing stable support for the entire device. Its top is bolted to a frame 2, which is a welded steel structure with sufficient rigidity and stability to effectively support the weight of each component. The feed end cylinder 3 is fixedly connected to the left side of the top of the frame 2, and the discharge end cylinder 7 is fixedly connected to the right side. Both the feed end cylinder 3 and the discharge end cylinder 7 are made of food-grade stainless steel and are coaxially arranged with the drying drum 51. They are sealed to the drying drum 51 via sealing flanges 56. A food-grade sealing gasket is placed between the sealing flange 56 and the cylinder interface to further enhance the sealing performance, prevent hot air leakage that could reduce drying efficiency, and prevent external moisture from flowing back into the drying chamber, causing the capsules to become damp again.

[0029] A feeding hopper 4 is fixedly connected to the outer wall of the top of the feeding end cylinder 3 via a bracket. The feeding hopper 4 has a funnel-shaped structure and a guide plate is installed at the feeding inlet to facilitate the smooth feeding of high-humidity capsules into the drying drum 51, preventing capsules from accumulating or jamming at the feeding inlet. An air collecting box and an exhaust fan 6 are fixedly connected to the outer wall of the right side of the feeding end cylinder 3. The air collecting box is connected to the inside of the feeding end cylinder 3 and is used to collect the humid and hot air discharged from the drying drum 51. A filter screen is installed on the inner wall of the air collecting box to filter capsule dust and prevent dust from entering the exhaust fan 6 and causing damage to the components. The exhaust fan 6 is externally connected to the outside of the air collecting box via a flange. A low-noise, adjustable-speed model is selected, which can flexibly adjust the air volume according to the humidity changes during the drying process, quickly discharge the humid and hot air in the drying drum 51, prevent capsules from becoming damp, and maintain a stable negative pressure in the drying chamber to ensure smooth flow of hot air.

[0030] A hot air distribution box and a heating fan 8 are fixedly connected to the outer wall of the left side of the discharge end cylinder 7. The hot air distribution box is connected to the interior of the discharge end cylinder 7, and its inner wall is equipped with a guide plate to evenly distribute the hot air delivered by the heating fan 8 to each area of ​​the drying drum 51, avoiding excessive local hot air that could cause capsule misalignment or over-drying. The heating fan 8 is installed on the outside of the hot air distribution box via a flange and integrates an electric heating module and a temperature and humidity detection unit. The electric heating module can heat the air to a suitable temperature of 40 to 60°C, which is suitable for the low-temperature drying requirements of capsules. The temperature and humidity detection unit can monitor the inlet air temperature and humidity in real time and feed the data back to the control system to achieve closed-loop temperature control and prevent capsule charring caused by excessive temperature. The heating fan 8 and the dehumidifying fan 6 work together to create a counter-current drying effect. Hot air enters the drying drum 51 from the discharge end cylinder 7 and flows towards the feed end cylinder 3. The capsules enter from the feed end and move towards the discharge end. The hot air and capsules exchange heat in a counter-current manner, allowing the capsules to gradually come into contact with the high-temperature drying air during their movement. This ensures drying efficiency while preventing the capsules from directly contacting high temperatures and causing surface charring. A discharge cylinder 17 is fixedly connected to the bottom of the discharge end cylinder 7. The discharge cylinder 17 is internally connected to the discharge end cylinder 7, and an electrically controlled valve is fixedly connected to its inner wall. This valve automatically controls its opening and closing according to the capsule drying progress and moisture content, ensuring the orderly discharge of dried capsules and preventing hot air leakage from the discharge cylinder 17 during the drying process.

[0031] Two sets of brackets 9 are symmetrically fixed to the top of the base plate 1. The two sets of brackets 9 are located on both sides of the drying drum 51 and adopt a welded steel structure. The top of the brackets is fixedly connected to the roller bearing seat 10 by bolts. The outer wall of the roller bearing seat 10 is rotatably connected to the roller body 11 through the bearing. The outer wall of the roller body 11 is slidably connected to the limiting groove 532 of the arc groove wheel 531 to stably support the drying drum 51 and ensure its smooth rotation. The contact surfaces of the roller body 11 and the arc groove wheel 531 are both treated with high frequency quenching and polishing to make them smooth and wear-resistant. The surface roughness Ra≤1.6μm can effectively reduce the rotational friction resistance between the two, reduce component wear, reduce motor load, and improve the operating stability of the drying drum 51, avoiding vibration during operation and preventing the capsule from breaking due to vibration and collision.

[0032] A support frame 12 is fixedly connected to the right side of the outer wall of the base plate 1. This support frame 12 is a welded steel structure used to fix and support the servo motor 13 and the reducer 14. The top of the support frame 12 is fixedly connected to the adjustable speed servo motor 13 by bolts. The speed can be flexibly adjusted according to the capsule drying requirements to achieve low-speed and stable rotation of the drying drum 51, which is suitable for the fragile nature of capsules. The output end of the servo motor 13 is fixedly connected to the harmonic reducer 14 through a flexible coupling. This reducer has the characteristics of large reduction ratio, smooth transmission, and low noise. It can convert the high-speed rotation of the servo motor 13 into the low-speed rotation required by the drying drum 51 and increase the torque to ensure that the drying drum 51 rotates smoothly and powerfully.

[0033] The reducer 14 is bolted to the outer wall of the support frame 12 to ensure its operational stability. A rotating shaft 15 is rigidly connected to the output end of the reducer 14 via a coupling. A transmission gear 16 is keyed to one end of the rotating shaft 15, meshing with the driven gear ring 55 to form a stable gear transmission mechanism. When the servo motor 13 is working, the power is reduced and amplified by the reducer 14, driving the rotating shaft 15 and the transmission gear 16 to rotate. This, in turn, drives the driven gear ring 55 and the drying drum 51 to rotate smoothly. The rotation speed can be adjusted to 10 to 20 r / min, ensuring sufficient drying time for the capsules within the drying drum 51 while preventing excessive speed from causing capsule collision and breakage.

[0034] Furthermore, combined Figure 1-7 As shown, in this embodiment, the drying drum 51 is divided into a feeding section, a drying section, and a discharging section along the axial direction. The reference angles of the lifting components 54 corresponding to the three sections can be adjusted by the adjusting components 52 respectively: the reference angle of the feeding section is 15° to 18°, used to disperse and prevent sticking of high-humidity capsules; the reference angle of the drying section is 10° to 14°, used to evenly sprinkle and dry the capsules; and the reference angle of the discharging section is 6° to 9°, used to gently convey low-humidity capsules to prevent breakage. At the same time, the temperature and humidity detection unit of the exhaust fan 6 can monitor the temperature and humidity of the discharged humid air in real time, and the temperature and humidity detection unit of the heating fan 8 monitors the temperature and humidity of the incoming air. The data from both are synchronously fed back to the control system, which adjusts the heating power of the heating fan 8, the air volume of the exhaust fan 6, and the rotation speed of the drying drum 51 in a coordinated manner to achieve adaptive drying, ensure that the capsule drying quality meets the standards, and satisfy the stringent requirements of the pharmaceutical industry.

[0035] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0036] The working principle of this capsule drying device is to achieve efficient and low-damage drying by coordinating the core components to adapt to the characteristics of capsules, such as being fragile, prone to sticking to the wall, and highly heat-sensitive. Its workflow is as follows: After the servo motor 13 starts, it is reduced in speed and increased in torque by the reducer 14. Through the meshing of the transmission gear 16 and the driven gear ring 55, it drives the drying drum 51 to rotate smoothly. The support roller body 11 and the arc groove wheel 531 slide to provide stable support for the drying drum 51 and reduce rotational friction. High-humidity capsules are fed into the feed end cylinder 3 through the conveyor hopper 4 and then into the drying drum 51. The servo hydraulic cylinder 522 of the adjusting component 52 is activated, driving the adjusting gear ring 533 of the transmission component 53 to slide through the slide block 524 and the transmission shaft 526, thereby driving all the lifting components 54 to adjust synchronously to 6° to 18°. With a safe throwing angle, the L-shaped shovel-shaped lifting plate 541 rotates with the drying drum 51, evenly throwing the capsules to form a thin curtain of material. The food-grade non-stick coating on its surface prevents the capsules from sticking to the wall, and the double-row staggered waist-shaped holes 534 ensure uniform penetration of hot air. At the same time, the heating fan 8 starts, and the temperature-controlled drying hot air of 40 to 60°C is sent to the discharge end of the drying drum 51 through the hot air distribution box. It forms a countercurrent heat exchange with the capsules moving towards the discharge end, so as to achieve uniform drying of the capsules. The hot and humid air is collected by the air collection box at the feeding end and discharged by the dehumidifying fan 6 to prevent the capsules from regaining moisture. The dried capsules are discharged in an orderly manner through the discharge cylinder 17 at the bottom of the discharge end cylinder 7 under the control of the electronically controlled valve. Throughout the process, the temperature and humidity detection unit provides real-time feedback data and adjusts the parameters of each component in a linkage manner to ensure that the drying quality meets the standards.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A capsule drying device, comprising a base plate (1), characterized in that, Also includes: The roller lifting structure (5) is set above the bottom plate (1) to adapt to the process characteristics of capsules that are easy to break and stick to the wall, form a uniform material curtain and reduce the breakage rate, and achieve efficient and stable drying. The roller lifting structure (5) includes a drying roller (51), which is located above the base plate (1). The outer wall of the drying roller (51) is provided with an adjusting component (52) and a transmission component (53). The transmission component (53) is connected to the adjusting component (52). The drying roller (51) is connected to a lifting component (54) through the transmission component (53). A driven gear ring (55) is fixedly connected to the outer wall of the drying roller (51). Sealing flanges (56) are fixedly connected to both ends of the drying roller (51).

2. The capsule drying apparatus according to claim 1, characterized in that: The adjusting component (52) includes a hinge seat (521), which is fixedly connected to the outer wall of the drying drum (51). A hydraulic cylinder (522) is hinged to the outer wall of the hinge seat (521). A connecting bolt (523) is fixedly connected to one end of the hydraulic cylinder (522). A slide (524) is hinged to the outer wall of the connecting bolt (523). An arc-shaped slide plate (525) is slidably connected to the outer wall of the slide (524). A drive shaft (526) is fixedly connected to the outer wall of the slide (524) to achieve synchronous and precise adjustment of the angle of the lifting component (54), and the adjustment angle is limited to the safe dispensing range of the capsule.

3. The capsule drying apparatus according to claim 1, characterized in that: The transmission component (53) includes an arc groove wheel (531), the outer wall of which has a limiting groove (532), the inner wall of which is slidably connected to an adjusting toothed ring (533), the outer wall of which has a limiting arc groove (534), and the adjusting toothed ring (533) meshes with the adjusting toothed plate (544) of the lifting component (54) to achieve synchronous and same-angle adjustment of all lifting components (54).

4. The capsule drying apparatus according to claim 1, characterized in that: The lifting component (54) includes an adjusting toothed plate (544), and a shovel-shaped lifting plate (541) is fixedly connected to the outer wall of the adjusting toothed plate (544). The shovel-shaped lifting plate (541) has an L-shaped structure. A coating groove (542) is opened on the outer wall of the shovel-shaped lifting plate (541). A double row of staggered waist-shaped holes (543) is opened on the outer wall of the coating groove (542). The opening rate of the waist-shaped holes is controlled at 20% to 30% to ensure that the hot air penetrates evenly and does not reduce the structural strength. The surface of the shovel-shaped lifting plate (541) is coated with a food-grade non-stick coating.

5. The capsule drying apparatus according to claim 1, characterized in that: The top of the base plate (1) is fixedly connected to the frame (2), the top of the frame (2) is fixedly connected to the feed end cylinder (3), the top of the frame (2) is fixedly connected to the discharge end cylinder (7), the feed end cylinder (3) and the discharge end cylinder (7) are respectively sealed to the drying drum (51) through the sealing connection flange (56) to prevent hot air leakage and moisture backflow.

6. The capsule drying apparatus according to claim 5, characterized in that: The outer wall of the feed end cylinder (3) is fixedly connected to a conveying hopper (4), and the outer wall of the feed end cylinder (3) is fixedly connected to an air collecting box and a dehumidifying fan (6). The dehumidifying fan (6) is connected to the outside of the air collecting box and is used to discharge the hot and humid air inside the drying drum (51) to prevent the capsule from becoming damp again.

7. The capsule drying apparatus according to claim 5, characterized in that: The outer wall of the discharge end cylinder (7) is fixedly connected to a hot air distribution box and a heating fan (8). The heating fan (8) is installed on the outside of the hot air distribution box and is used to send temperature-controlled drying hot air into the drying drum (51) to form a counter-current drying effect with the dehumidification fan (6). The bottom end of the discharge end cylinder (7) is fixedly connected to a discharge cylinder (17), and the inner wall of the discharge cylinder (17) is fixedly connected to an electrically controlled valve.

8. The capsule drying apparatus according to claim 1, characterized in that: The top of the base plate (1) is fixedly connected to a bracket (9), and the top of the bracket (9) is fixedly connected to a roller bearing seat (10). The outer wall of the roller bearing seat (10) is rotatably connected to a roller body (11). The outer wall of the roller body (11) is slidably connected to the outer wall of the grooved wheel (531). The surfaces of the roller body (11) and the grooved wheel (531) are treated with a smooth and wear-resistant finish to reduce friction loss and improve operational stability.

9. The capsule drying apparatus according to claim 1, characterized in that: The outer wall of the base plate (1) is fixedly connected to a support frame (12), the top of the support frame (12) is fixedly connected to a servo motor (13), and the output end of the servo motor (13) is fixedly connected to a reducer (14) via a coupling.

10. A capsule drying apparatus according to claim 9, characterized in that: The reducer (14) is fixedly connected to the outer wall of the support frame (12) by bolts. The output end of the reducer (14) is fixedly connected to the rotating shaft (15) by a coupling. One end of the rotating shaft (15) is fixedly connected to the transmission gear (16). The outer wall of the transmission gear (16) meshes with the driven gear ring (55) to drive the drying drum (51) to rotate smoothly.

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