A drying equipment for traditional Chinese medicinal materials

Abstract

The present application relates to drying equipment technical field, especially to a kind of drying equipment for traditional Chinese medicinal material processing, comprising: base, as the support of equipment;Outer cylinder part, it includes outer roller, the outer roller is rotatably installed in support part, the support part is arranged on the surface of base and is used to support outer roller, the inner wall of outer roller is surrounded with several outer pushers.This application adopts a set of driving part to drive outer roller and inner roller rotation, and realizes the elastic linkage of both through adapter, when hot air enters the inside of inner roller from hot gas inlet pipe, the rotation of inner roller drives helical guide plate to rotate, forces hot air to form the rotational flow opposite to the rotation direction of roller, so as to be evenly sprayed from each hot air hole, hot air must penetrate the material layer repeatedly scooped up, spilled by outer pusher and inner pusher, to be discharged from the moisture discharge port of outer roller, greatly prolongs the contact path and time of hot air and material.

Description

Technical Field

[0001] This invention relates to the field of drying equipment technology, and in particular to a drying equipment for processing Chinese medicinal materials. Background Technology

[0002] Chinese medicinal herbs contain a large amount of moisture after harvesting and must be dried promptly to remove moisture, prevent mold and insect infestation, and facilitate long-term storage and transportation. Drying is a crucial step in the processing of Chinese medicinal herbs at their place of origin, directly affecting their quality and efficacy. Currently, there are many types of drying equipment for Chinese medicinal herbs on the market, mainly including two categories: static drying rooms and dynamic dryers. Although static drying rooms (such as hot air drying rooms) have a simple structure, they have obvious drawbacks: the herbs piled on the trays or mesh are heated unevenly, easily resulting in the upper layer being dry while the lower layer is not, or the side closer to the heat source being scorched while the side farther away is not completely dry, seriously affecting the appearance and effective components of the herbs. To improve uniformity, dynamic dryers, such as rotary drum dryers, have emerged, which use the rotation of the drum to tumble the herbs.

[0003] However, existing dynamic drying equipment still suffers from the following technical challenges: Limited functionality and high energy consumption: The rotation function of most equipment is only used for turning the material, and the hot air system operates independently without coordination. Hot air often enters from one end and exits from the other, forming a fixed flow channel within the drum, resulting in low heat utilization. Furthermore, the uneven heating velocity of the medicinal materials leads to adhesion and cleaning difficulties. Some medicinal materials with high sugar or mucilage content (such as wolfberry, polygonatum, and rehmannia) release sugar precipitates from their surface after heating, easily adhering to the drum wall and lifting plates. This not only reduces drying efficiency but also makes cleaning extremely difficult. Manual cleaning during downtime is time-consuming and labor-intensive, severely impacting continuous production efficiency. Complex structure and high cost: To achieve turning and prevent adhesion, some equipment introduces vibration devices or complex scraping mechanisms, increasing equipment complexity and manufacturing costs, and resulting in a high failure rate. Therefore, a drying equipment specifically designed for processing medicinal materials is needed to address these issues. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A drying device for processing Chinese medicinal herbs, comprising: The base serves as a support for the equipment; The outer cylinder section includes an outer roller, which is rotatably mounted in a support section. The support section is set on the base surface to support the outer roller. Several outer deflector plates are arranged around the inner wall of the outer roller. The left side of the outer roller is set as a feed port. A toothed ring is set on the left side surface of the outer roller. The toothed ring is driven by a drive section. A discharge port is opened on the right side of the bottom end of the outer roller. The inner cylinder section includes an inner roller suspended and inserted inside the outer roller. Several inner deflector plates are arranged around the surface of the inner roller, and these plates are staggered with the outer deflector plates. A hot air inlet pipe is connected to the right side of the inner roller, and the hot air inlet pipe passes through the outer roller and connects to a bearing support via a bearing seat. The bottom end of the bearing support is fixed to the base surface by bolts. Several hot air holes are opened around the surface of the inner roller, and a spiral guide plate is provided on the inner wall of the inner roller. The outer roller and the hot air inlet pipe are elastically connected by a connector, and the right side of the hot air inlet pipe is rotatably connected to the hot air outlet of the hot air furnace. The driving part is connected to the gear ring drive and is used to drive the outer drum to rotate; A support portion, which is disposed on the base, is used to support the outer roller and allow it to rotate.

[0006] Preferably, both the outer deflector and the inner deflector are designed in an L-shape, and the blade ends of both the outer deflector and the inner deflector are designed to be inclined.

[0007] Preferably, the movable plate is movably installed on one side of the discharge port of the outer roller, and two threaded columns are connected to the other side of the discharge port of the outer roller. The threaded columns are inserted into one side of the movable plate through a slot, and the surface of the threaded columns is threaded with a threaded cap and abuts against the surface of the movable plate.

[0008] Preferably, the hot air holes are spirally distributed on the surface of the inner roller along the spiral direction of the spiral guide plate.

[0009] Preferably, the connecting component includes a disc plate, a first transmission disc, an elastic telescopic connector, a second transmission disc, screws, and a limiting block; The limiting block is fixed to the right end of the outer roller, the second transmission disc is sleeved on the right side of the outer roller and snapped into the limiting block, and the second transmission disc and the limiting block are locked together by screw thread insertion. The right side of the second transmission disc is connected to the first transmission disc via several elastic telescopic connectors, and the first transmission disc is fixed on the surface of the disc plate, which is fixed on the surface of the hot gas inlet pipe.

[0010] Preferably, the elastic telescopic connector includes a sleeve fixed on the second transmission disk and a telescopic rod with one end fixed on the first transmission disk and the other end slidably inserted into the sleeve. A compression spring is provided between the end of the telescopic rod located inside the sleeve and the bottom of the sleeve, so that the inner roller can generate a certain angle of elastic buffer displacement relative to the outer roller during rotation.

[0011] Preferably, the driving part includes a gear meshing with a gear ring, and one end of the gear is shaft-connected to a variable frequency motor. The variable frequency motor is placed on the surface of the support plate, and the support plate is fixed to the base by screws.

[0012] Preferably, the supporting part includes a limiting ring, which is sleeved on the surface of the outer roller through a ring groove. The bottom end of the limiting ring is connected to a support frame, and the support frame is fixed to the base by screws.

[0013] Preferably, the surface of the limiting ring is movably fitted with balls through a ball groove, and the surface of the balls is in contact with the surface of the annular groove of the outer roller.

[0014] The present invention has at least the following beneficial effects: 1. This invention employs a single drive unit to simultaneously drive the outer and inner drums to rotate, and achieves elastic linkage between the two through a connecting component. When hot air enters the inner drum from the hot air inlet pipe, the rotation of the inner drum drives the spiral guide plate to rotate, forcing the hot air to form a rotating airflow opposite to the rotation direction of the drum, thereby being evenly sprayed out from each hot air hole. The hot air must penetrate the turbulent material layer repeatedly scooped up and scattered by the outer and inner guide plates before it can be discharged from the exhaust port of the outer drum, which greatly extends the contact path and time between the hot air and the material, realizes the tiered utilization of heat, and significantly improves the heat energy utilization rate and drying uniformity.

[0015] 2. The present invention designs the outer and inner deflector plates into an L-shaped structure, with their free ends close to the inner wall of the outer drum and the outer wall of the inner drum, respectively, forming a tiny scraping gap. During the rotation of the drum, the deflector plates not only play a role in turning the material, but their edges also continuously and gently scrape the inner and outer drum walls, effectively preventing high-sugar medicinal materials from sticking to the drum wall due to sugar precipitation, thus realizing an online self-cleaning function without the need for manual cleaning by stopping the machine.

[0016] 3. The elastic telescopic connector provided in the connector of the present invention constitutes an elastic buffer mechanism. When a hard object or a large clump of medicinal material is stuck in the gap between the deflector plate and the cylinder wall, the inner roller can rotate with a slight lag relative to the outer roller, changing the size of the gap and causing the stuck object to fall off automatically. Then the spring returns to its original position, which not only protects the equipment from damage, but also enhances the reliability of the self-cleaning function, and completely solves the problems of easy adhesion, difficult cleaning, and serious impact on continuous production efficiency mentioned in the background technology.

[0017] 4. Through the meshing of the gear ring and gear, the outer drum is driven to rotate by a single variable frequency motor. Then, through the first transmission disc, the elastic telescopic connector, and the second transmission disc in the connecting part, the torque is transmitted to the inner drum, realizing the synchronous rotation of the inner and outer drums. This linkage simultaneously realizes multiple functions such as material turning, hot air rotation spraying, drum wall self-cleaning, and elastic anti-jamming. The highly integrated design eliminates the independent drive source and complex transmission mechanism added for different functions in traditional equipment, significantly simplifying the equipment structure and reducing manufacturing costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the external structure of a drying device for processing Chinese medicinal materials proposed in this invention; Figure 2 This is a schematic diagram of the external side view of a drying device for processing Chinese medicinal materials proposed in this invention; Figure 3 This is a schematic diagram of the external top view of a drying device for processing Chinese medicinal materials proposed in this invention. Figure 4 This is a bottom-view disassembly diagram of the outer cylinder section in a drying device for processing Chinese medicinal materials proposed in this invention. Figure 5 This is a schematic diagram of the internal disassembly structure of the outer drum in a drying device for processing Chinese medicinal materials proposed in this invention; Figure 6 This is a three-dimensional structural diagram of the inner cylinder portion of a drying device for processing Chinese medicinal materials proposed in this invention; Figure 7 This is a three-dimensional disassembly diagram of a connecting component in a drying equipment for processing Chinese medicinal materials, as proposed in this invention. Figure 8 This is a schematic diagram of the disassembled structure of the outer drum and connecting parts in a drying device for processing Chinese medicinal materials proposed in this invention.

[0020] In the picture: 1. Base; 2. Outer cylinder section; 21. Outer roller; 22. Gear ring; 23. Outer deflector plate; 24. Threaded column; 25. Threaded pressure cap; 26. Movable plate; 3. Inner cylinder section; 31. Inner roller; 32. Inner deflector plate; 33. Hot air inlet pipe; 34. Bearing support; 35. Connecting piece; 351. Disc plate; 352. First transmission disc; 353. Elastic telescopic connector; 354. Second transmission disc; 355. Screw; 356. Limiting block; 4. Hot air furnace; 5. Drive components; 51. Gears; 52. Variable frequency motor; 53. Support plate; 6. Supporting parts; 61. Limiting ring; 62. Ball bearings; 63. Support frame. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] The equipment consists of the following structural components: Reference Figure 1-8 A drying device for processing Chinese medicinal herbs, comprising: Base 1, used as a support for the equipment; The outer cylinder part 2 includes an outer roller 21, which is rotatably installed in the support part 6. The support part 6 is set on the surface of the base 1 to support the outer roller 21. Several outer deflector plates 23 are arranged around the inner wall of the outer roller 21. The left side of the outer roller 21 is set as the feed port. A toothed ring 22 is set on the left surface of the outer roller 21. The toothed ring 22 is driven by the drive part 5. The inner cylinder section 3 includes an inner roller 31 suspended and inserted inside the outer roller 21. Several inner deflector plates 32 are arranged around the surface of the inner roller 31, and the inner deflector plates 32 and the outer deflector plates 23 are staggered. A hot air inlet pipe 33 is connected to the right side of the inner roller 31. The hot air inlet pipe 33 passes through the outer roller 21 and connects to the bearing support 34 through the bearing seat. The bottom end of the bearing support 34 is fixed to the surface of the base 1 by bolts. Several hot air holes are opened around the surface of the inner roller 31. A spiral guide plate is provided on the inner wall of the inner roller 31. The hot air holes are spirally distributed on the surface of the inner roller 31 along the spiral guide plate. The outer roller 21 is elastically connected to the hot air inlet pipe 33 by a connector 35, and the right side of the hot air inlet pipe 33 is rotatably connected to the hot air outlet of the hot air furnace 4.

[0023] Both the outer deflector plate 23 and the inner deflector plate 32 have an L-shaped structure design, and the blade ends of both the outer deflector plate 23 and the inner deflector plate 32 are inclined.

[0024] The outer roller 21 has a discharge port on the right side of its bottom end. A movable plate 26 is movably installed on one side of the discharge port of the outer roller 21. Two threaded posts 24 are connected to the other side of the discharge port of the outer roller 21. The threaded posts 24 are inserted into one side of the movable plate 26 through a slot. The threaded posts 24 are threaded with threaded caps 25 and abut against the surface of the movable plate 26.

[0025] The inner cylinder part 3 includes a limiting block 356 fixed to the end side of the outer roller 21. The outer roller 21 is fitted with a second transmission disc 354 on the right and is engaged with the limiting block 356. The second transmission disc 354 and the limiting block 356 are locked together by screws 355 threadedly inserted.

[0026] The second transmission disc 354 is connected to the first transmission disc 352 on the right side by several elastic telescopic connectors 353, and the first transmission disc 352 is fixed on the surface of the disc plate 351, which is fixed on the surface of the hot air inlet pipe 33.

[0027] The elastic telescopic connector 353 includes a sleeve fixed on the second transmission disk 354, and a telescopic rod with one end fixed on the first transmission disk 352 and the other end slidably inserted into the sleeve. A compression spring is provided between the end of the telescopic rod located inside the sleeve and the bottom of the sleeve, so that the inner roller 31 can generate a certain angle of elastic buffer displacement relative to the outer roller 21 during rotation.

[0028] The drive unit 5 includes a gear 51 that meshes with the gear ring 22, and a variable frequency motor 52 is connected to one end of the gear 51. The variable frequency motor 52 is placed on the surface of the support plate 53, and the support plate 53 is fixed to the base 1 by screws.

[0029] The support part 6 includes a limiting ring 61, which is sleeved on the surface of the outer roller 21 through a ring groove. The bottom end of the limiting ring 61 is connected to a support frame 63, and the support frame 63 is fixed to the base 1 by screws.

[0030] The surface of the limiting ring 61 is fitted with a ball bearing 62 through a ball groove, and the surface of the ball bearing 62 is in contact with the surface of the annular groove of the outer roller 21.

[0031] Example 1: Basic Structure Setup; like Figure 1-8 As shown in the figure, this embodiment provides a drying device for processing Chinese medicinal materials, including a base 1, which serves as the supporting foundation for the entire device. A support portion 6 is provided on the surface of the base 1 for rotating and supporting the outer cylinder portion 2.

[0032] The outer cylinder section 2 includes an outer roller 21, which is rotatably mounted on the base 1 via a support section 6. The left side of the outer roller 21 is provided as a feed inlet for feeding in Chinese medicinal materials to be dried. A toothed ring 22 is fixedly fitted on the outer surface of the left side of the outer roller 21. The toothed ring 22 is connected to the drive section 5 for transmission, and the drive section 5 provides rotational power. Several outer deflector plates 23 are evenly arranged circumferentially on the inner wall of the outer roller 21 for lifting and turning the material when the roller rotates. A discharge port is opened on the right side of the bottom end of the outer roller 21 for discharging the dried material.

[0033] The inner cylinder section 3 includes an inner roller 31 suspended inside the outer roller 21. The inner roller 31 is coaxially arranged with the outer roller 21. Several inner deflector plates 32 are evenly arranged on the surface of the inner roller 31 along the circumference. The inner deflector plates 32 and the outer deflector plates 23 are staggered in the circumferential direction to form an interlaced turning pattern. A hot air inlet pipe 33 is connected to the center of the right side of the inner roller 31. The right end of the hot air inlet pipe 33 passes through the right end cover of the outer roller 21 and is rotatably connected to the bearing support 34 fixed on the base 1 through the bearing seat. The right end port of the hot air inlet pipe 33 is rotatably connected to the hot air outlet of the hot air furnace 4, thereby introducing hot air into the interior of the inner roller 31.

[0034] The inner roller 31 has several hot air holes around its surface, which are used to spray the hot air inside the inner roller 31 into the annular drying channel between the outer roller 21 and the inner roller 31. The inner wall of the inner roller 31 is provided with a spiral guide plate, which is used to guide the hot air entering the inner roller 31 to form a rotating airflow. The outer roller 21 and the hot air inlet pipe 33 are elastically connected by a connector 35, which allows the inner roller 31 and the outer roller 21 to generate a certain relative movement during rotation.

[0035] Example 2: Based on Example 1, such as Figure 3-8 As shown, the drive part 5 and the connecting part 35 are further detailed.

[0036] The drive unit 5 includes a gear 51 that meshes with the gear ring 22. One end of the gear 51 is connected to a variable frequency motor 52. The variable frequency motor 52 is placed on the surface of the support plate 53. The support plate 53 is fixed to the base 1 by screws. When the variable frequency motor 52 starts, it drives the outer roller 21 to rotate around its axis through the meshing transmission of the gear 51 and the gear ring 22.

[0037] The connecting component 35 includes a disc plate 351, a first transmission disc 352, an elastic telescopic connector 353, a second transmission disc 354, a screw 355, and a limiting block 356. The limiting block 356 is fixed to the right end of the outer roller 21. The second transmission disc 354 is sleeved on the right side of the outer roller 21 and is engaged with the limiting block 356 through a slot structure. At the same time, the second transmission disc 354 and the limiting block 356 are locked by screws 355 threaded insertion, thereby realizing the fixed connection between the second transmission disc 354 and the outer roller 21. The right side of the second transmission disc 354 is connected to the first transmission disc 352 through a number of elastic telescopic connectors 353 arranged in a ring array. The first transmission disc 352 is fixed on the surface of the disc plate 351, and the disc plate 351 is fixed on the surface of the hot air inlet pipe 33.

[0038] Since the hot air inlet pipe 33 is supported on the base 1 by the bearing support 34, and the inner roller 31 is fixedly connected to the hot air inlet pipe 33, the first transmission disc 352, the disc plate 351, the hot air inlet pipe 33, and the inner roller 31 constitute a whole and can rotate relative to the base 1. When the outer roller 21 rotates, the torque is transmitted to the inner roller 31 through the linkage of the second transmission disc 354, the elastic telescopic connector 353, and the first transmission disc 352, driving the inner roller 31 to rotate synchronously. The simultaneous rotation of the outer roller 21 and the inner roller 31 is achieved with only one set of drive parts 5, resulting in a highly integrated structure.

[0039] Example 3: Based on Example 2, such as Figure 6 , Figure 7 As shown, the specific structure of the elastic telescopic connector 353 will be further explained.

[0040] The elastic telescopic connector 353 includes a sleeve fixed to the second transmission disc 354, and a telescopic rod with one end fixed to the first transmission disc 352 and the other end slidably inserted into the sleeve. A compression spring is provided between the end of the telescopic rod inside the sleeve and the bottom of the sleeve. The compression spring is always in a pre-compressed state, so that under normal working conditions, the telescopic rod remains fully extended, and the first transmission disc 352 and the second transmission disc 354 maintain a fixed relative position, thereby ensuring that the inner roller 31 and the outer roller 21 rotate basically synchronously.

[0041] The technical effects are as follows: During equipment operation, if highly viscous Chinese medicinal materials, such as wolfberry and polygonatum, or hard debris get stuck in the gap between the outer deflector plate 23 or the inner deflector plate 32 and the cylinder wall, causing the rotational resistance of the inner roller 31 to increase instantaneously and the rotational speed to decrease, the outer roller 21 will still be driven to rotate at the original speed by the drive part 5. A speed difference will be generated between the first transmission disc 352 and the second transmission disc 354. At this time, the telescopic rod connected to the first transmission disc 352 will be compressed into the sleeve on the second transmission disc 354, and the compression spring will be further compressed.

[0042] This compression action causes a slight, momentary lag in the rotation of the inner roller 31 relative to the outer roller 21. This changes the relative angle and gap between the outer deflector plate 23, the inner deflector plate 32, and the inner and outer cylinder walls, creating a shearing or expanding action that allows the jammed material to slide off or be crushed. When the resistance disappears, the compression spring quickly pushes the telescopic rod to reset, and the inner and outer rollers resume synchronous rotation, thus achieving an automatic anti-jamming function. This effectively protects the equipment, avoids downtime for cleaning due to material jamming, and ensures the reliability of the self-cleaning function.

[0043] Example 4: Optimization of the lever structure; Based on Example 1, such as Figure 5 , Figure 6 As shown, the structure of the outer deflector plate 23 and the inner deflector plate 32 is further defined.

[0044] Both the outer deflector plate 23 and the inner deflector plate 32 are designed with an L-shaped structure. The blade ends of the outer deflector plate 23 and the inner deflector plate 32, i.e. the lateral extension of the L-shape, are designed with an inclination to facilitate the scooping and throwing of materials. A small gap is reserved between the free end of the outer deflector plate 23 and the inner wall of the outer roller 21, which can be 3-8mm. A small gap is also reserved between the free end of the inner deflector plate 32 and the outer wall of the inner roller 31.

[0045] The effects of the linkage technology are as follows: During the rotation of the drum, the outer deflector plate 23 and the inner deflector plate 32 not only scoop up and turn the material, but their free edge edges also continuously and gently scrape the inner wall of the outer drum 21 and the outer wall of the inner drum 31. Due to the gap, this scraping will not damage the drum wall, but it is enough to prevent the sugar-rich Chinese medicinal materials from sticking to the drum wall due to the sugar precipitate on the surface when heated. This realizes the online self-cleaning function, eliminating the need for manual cleaning and significantly improving the continuous operation efficiency of the equipment. At the same time, due to the staggered arrangement of the outer deflector plate 23 and the inner deflector plate 32, the material is alternately scooped up and sprinkled by the deflector plates in two directions in the annular drying channel, making the turning more thorough and uniform.

[0046] Example 5: Based on Example 1 or 4, the hot air flow path will be further explained.

[0047] The spiral guide plate on the inner wall of the inner roller 31 has a spiral direction opposite to the working rotation direction of the inner roller 31, and the hot air holes are spirally distributed on the surface of the inner roller 31 along the spiral direction of the spiral guide plate.

[0048] The effects of the linkage technology are as follows: The hot air generated by the hot air furnace 4 enters the interior of the inner drum 31 through the hot air inlet pipe 33, forming a hot air distribution chamber. Under the action of the spiral guide plate, the hot air forms a rotating airflow. Since the rotation direction of the spiral guide plate is opposite to that of the inner drum 31, the rotation direction of the airflow and the rotation direction of the drum produce a strong relative motion, which forces the hot air to be evenly ejected at high speed from each hot air hole on the inner drum 31 wall and enters the annular drying channel. This avoids the hot air forming a direct current short circuit in the cavity and ensures that the hot air can evenly and comprehensively cover the entire drying channel.

[0049] The hot air ejected into the annular drying channel comes into full contact with the material being repeatedly lifted and sprinkled by the outer deflector plate 23 and the inner deflector plate 32. The material is fully enveloped by the hot air during the sprinkling process, achieving efficient heat exchange between the hot air and the material, which significantly improves the drying efficiency and uniformity. After the hot air penetrates the material layer, it carries moisture and is discharged from the exhaust port on one side of the outer drum 21, which increases the hot air flow and disturbance, prolongs the heat exchange time, and significantly improves the thermal energy utilization rate.

[0050] Example 6: Based on Example 1, such as Figure 1 , Figure 6 As shown, the structure of the discharge port is further defined.

[0051] The outer roller 21 has a discharge port on the right side of its bottom end. A movable plate 26 is movably installed on one side of the discharge port to open or close the discharge port. Two threaded posts 24 are connected to the other side of the discharge port. The threaded posts 24 are inserted into one side of the movable plate 26 through a slot. The surface of the threaded posts 24 is threaded with a threaded cap 25, which abuts against the surface of the movable plate 26.

[0052] By tightening or loosening the threaded cap 25, the pressure of the movable plate 26 on the discharge port can be easily adjusted, thereby controlling the opening and closing state or the size of the discharge port. During the drying process, the movable plate 26 can be closed to prevent premature material leakage. After drying, the threaded cap 25 is loosened, the movable plate 26 is opened, and the material is discharged from the discharge port under the action of the rotating drum. This structure is simple, reliable, and easy to operate and maintain.

[0053] Example 7: Based on Example 1, such as Figure 3 As shown, the support portion 6 is further defined.

[0054] The support part 6 includes a limiting ring 61, which is sleeved on the surface of the outer roller 21 through a ring groove to radially limit and support the outer roller 21. The bottom end of the limiting ring 61 is connected to a support frame 63, which is fixed to the base 1 by screws.

[0055] To further reduce friction, a ball bearing 62 is movably mounted on the surface of the limiting ring 61 through a ball groove. The surface of the ball bearing 62 is in contact with the surface of the annular groove of the outer roller 21. When the outer roller 21 rotates, the ball bearing 62 rolls in the annular groove, converting sliding friction into rolling friction, which significantly reduces rotational resistance, makes the equipment operate more smoothly and steadily, and also reduces the consumption of driving power.

[0056] Example 8: Combining the structural configurations of the above embodiments, the drying equipment of the present invention achieves a single power drive and multiple technical effects working in tandem.

[0057] Specifically, after the variable frequency motor 52 starts, it drives the outer roller 21 to rotate through the gear 51 and the gear ring 22. The outer roller 21 transmits torque to the inner roller 31 through the second transmission disc 354, the elastic telescopic connector 353 and the first transmission disc 352, so as to realize the synchronous rotation of the inner roller 31 and the outer roller 21, thereby producing the following technical effects: First, the outer deflector plate 23 and the inner deflector plate 32 rotate with the drum, repeatedly scooping up and scattering the material to achieve uniform turning of the material.

[0058] Secondly, the rotation of the inner roller 31 drives the internal spiral guide plate to rotate, so that the incoming hot air forms a rotating airflow in the opposite direction to the rotation of the roller, and is evenly sprayed out from the spirally distributed hot air holes, thus avoiding hot air short-circuiting.

[0059] Third, the tiny gaps between the free ends of the outer deflector plate 23 and the inner deflector plate 32 and the inner and outer cylinder walls continuously scrape the cylinder walls during rotation, preventing material from sticking together.

[0060] Fourth, when material gets stuck, the compression spring in the elastic telescopic connector 353 is compressed, allowing the inner roller 31 to rotate with a slight lag, changing the gap between the deflector and the cylinder wall, causing the stuck material to fall off, and then automatically resetting.

[0061] Fifth, hot air must penetrate the churning material layer before it can be discharged from the exhaust port, which prolongs the contact time and path between the hot air and the material, significantly improving the thermal energy utilization rate.

[0062] Sixth, by using only one drive unit and one linkage mechanism, the above-mentioned multiple functions can be coordinated, reducing equipment manufacturing costs and failure rate.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A drying device for processing Chinese medicinal herbs, characterized in that, include: The base (1) serves as a support for the equipment; The outer cylinder part (2) includes an outer roller (21), which is rotatably installed in the support part (6). The support part (6) is set on the surface of the base (1) to support the outer roller (21). The inner wall of the outer roller (21) is surrounded by several outer deflector plates (23). The left side of the outer roller (21) is set as the feed port. The left side surface of the outer roller (21) is set with a toothed ring (22). The toothed ring (22) is driven by the drive part (5). The bottom right side of the outer roller (21) is opened with a discharge port. The inner cylinder section (3) includes an inner roller (31) suspended and inserted inside the outer roller (21). The inner roller (31) is surrounded by several inner deflector plates (32), and the inner deflector plates (32) and the outer deflector plates (23) are staggered. The right side of the inner roller (31) is connected to a hot air inlet pipe (33), and the right side of the hot air inlet pipe (33) passes through the outer roller (21) and is connected to the bearing support (34) through the bearing seat. The bottom end of the bearing support (34) is fixed to the surface of the base (1) by bolts. The inner roller (31) is surrounded by several hot air holes. The inner wall of the inner roller (31) is provided with a spiral guide plate. The outer roller (21) and the hot air inlet pipe (33) are elastically connected by a connector (35). The right side of the hot air inlet pipe (33) is rotatably connected to the hot air outlet of the hot air furnace (4). The driving part (5) is connected to the gear ring (22) for driving the outer roller (21) to rotate; Support part (6), which is disposed on the base (1) for supporting the outer roller (21) and allowing it to rotate.

2. The drying equipment for processing Chinese medicinal materials according to claim 1, characterized in that, Both the outer deflector plate (23) and the inner deflector plate (32) are designed in an L-shape, and the blade ends of both the outer deflector plate (23) and the inner deflector plate (32) are designed to be inclined.

3. The drying equipment for processing Chinese medicinal materials according to claim 1, characterized in that, A movable plate (26) is movably installed on one side of the discharge port of the outer roller (21). Two threaded columns (24) are connected to the other side of the discharge port of the outer roller (21). The threaded columns (24) are inserted into one side of the movable plate (26) through the slot. The threaded column (24) is threaded with a threaded cap (25) and abuts against the surface of the movable plate (26).

4. A drying device for processing Chinese medicinal materials according to claim 1, characterized in that, The hot air holes are spirally distributed on the surface of the inner roller (31) along the spiral direction of the spiral guide plate.

5. A drying device for processing Chinese medicinal materials according to claim 1, characterized in that, The connecting component (35) includes a disc plate (351), a first transmission disc (352), an elastic telescopic connector (353), a second transmission disc (354), a screw (355), and a limiting block (356). The limiting block (356) is fixed on the right side of the outer roller (21), the second transmission disc (354) is sleeved on the right side of the outer roller (21) and snapped into the limiting block (356), and the second transmission disc (354) and the limiting block (356) are locked together by screws (355) threaded insertion. The second transmission disc (354) is connected to the first transmission disc (352) on the right side by several elastic telescopic connectors (353), and the first transmission disc (352) is fixed on the surface of the disc plate (351), which is fixed on the surface of the hot air inlet pipe (33).

6. A drying device for processing Chinese medicinal materials according to claim 5, characterized in that, The elastic telescopic connector (353) includes a sleeve fixed on the second transmission disk (354) and a telescopic rod with one end fixed on the first transmission disk (352) and the other end slidably inserted into the sleeve. A compression spring is provided between the end of the telescopic rod located inside the sleeve and the bottom of the sleeve, so that the inner roller (31) can generate a certain angle of elastic buffer displacement relative to the outer roller (21) during rotation.

7. A drying device for processing Chinese medicinal materials according to claim 1, characterized in that, The drive unit (5) includes a gear (51) that meshes with a gear ring (22), and a variable frequency motor (52) is connected to one end of the gear (51). The variable frequency motor (52) is placed on the surface of the support plate (53), and the support plate (53) is fixed to the base (1) by screws.

8. A drying device for processing Chinese medicinal materials according to claim 1, characterized in that, The support part (6) includes a limiting ring (61), which is sleeved on the surface of the outer roller (21) through a ring groove. The bottom end of the limiting ring (61) is connected to a support frame (63), and the support frame (63) is fixed to the base (1) by screws.

9. A drying device for processing Chinese medicinal materials according to claim 8, characterized in that, The limiting ring (61) has a ball (62) movably mounted on its surface through a ball groove, and the surface of the ball (62) is in contact with the annular groove surface of the outer roller (21).

Images