A pill drying device

Abstract

The application relates to the technical field of drying equipment, in particular to a pill drying device which comprises a drying box body, a bearing mechanism and a driving mechanism. The bearing mechanism is arranged in the drying box body and comprises a fixed frame, a plurality of rolling shafts and transmission gears, the rolling shafts are arranged in parallel at equal intervals, and the transmission gears are mutually meshed; the driving mechanism is installed on the outer wall of the box body, an output end is connected with a rolling shaft, and each rolling shaft is driven to synchronously and reversely rotate through a gear set. The application can apply periodic rolling to wet pills, realizes pill separation and uniform heating.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical drying technology, and in particular to a pill drying device. Background Technology

[0002] Pills are solid preparations made by mixing powdered medicine with suitable excipients (called "binders" or "excipients") to form spherical or near-spherical shapes. They are one of the oldest and most common dosage forms in traditional Chinese medicine and are also widely used in modern Western medicine. Pills require disintegration and dissolution in the body before absorption, resulting in a slow release of the drug and a longer duration of action. They are suitable for the treatment and management of chronic diseases and can conveniently combine various powdered medicinal materials, especially precious or water-insoluble materials, to form pills, preserving their combined efficacy. Drying pills is a crucial quality control step in transforming "soft and wet" pills into a "stable" finished product. Its core lies in precisely controlling temperature, humidity, time, and ventilation to efficiently remove moisture while ensuring efficacy, ultimately yielding pills that meet quality standards and are easy to store and use. However, existing pill drying equipment often causes pills to stick together during the drying process, especially noticeable in the initial high-humidity stage. This leads to uneven heating of the pill surface, affecting the heat and mass transfer efficiency of the drying process, and consequently impacting the drying uniformity and final product quality. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing pill drying devices, which cause pills to stick together when drying wet pills. This phenomenon is particularly obvious in the initial stage of high humidity, resulting in uneven heating of the pill surface, affecting the heat and mass transfer efficiency of the drying process, and thus affecting the uniformity of pill drying and the quality of the final product. This invention provides a pill drying device.

[0004] The objective of this utility model is achieved through the following technical solution: a pill drying device, comprising a drying chamber, a supporting mechanism, and a driving mechanism, wherein: the supporting mechanism is disposed inside the drying chamber, and includes a fixed frame, rolling shafts, and transmission gears. The inner walls on both sides of the fixed frame are fixedly connected, and the two ends of a plurality of rolling shafts are rotatably connected to the inner walls on opposite sides of the fixed frame. The plurality of rolling shafts are arranged in parallel at equal intervals along the horizontal direction for carrying pills. The plurality of transmission gears are fixedly sleeved on the outer wall of one end of the plurality of rolling shafts, and adjacent transmission gears mesh with each other. The driving mechanism is installed on the outer wall of the drying chamber, and the output end of the driving mechanism passes through the side wall of the drying chamber and is fixedly connected to one of the rolling shafts. The driving mechanism provides rotational power to one of the rolling shafts and drives the remaining rolling shafts to rotate synchronously in the opposite direction via the meshing transmission gear set.

[0005] Optionally, the drive mechanism includes a drive motor, a reducer, and a coupling. The output shaft of the drive motor is fixedly connected to the input end of the reducer, and the output end of the reducer is fixedly connected to one end of one of the rolling shafts via the coupling. The coupling is located outside the drying chamber.

[0006] Optionally, the drive mechanism further includes a base and a sealed bearing. The base is fixedly installed on the outer wall of the drying chamber. The drive motor and reducer are both fixedly installed on the top of the base. A through connection hole is provided on the side wall of the drying chamber. The sealed bearing is fixedly installed on the inner wall of the connection hole. The rolling shaft passes through the inner ring of the sealed bearing and is connected to the coupling.

[0007] Optionally, the supporting mechanism further includes partition plates, a plurality of partition plates being vertically fixed to the inner walls of opposite sides of the fixed frame, and the partition plates being set in a direction perpendicular to the axis of the rolling shaft, the plurality of partition plates dividing the internal space of the supporting mechanism into a plurality of parallel drying channels.

[0008] Optionally, the outer peripheral wall of the rolling shaft is covered with a high-temperature resistant flexible material layer, the outer surface of the flexible material layer is processed with anti-slip texture, and the interior of the rolling shaft is a hollow structure.

[0009] Optionally, a hot air circulation system is fixedly installed inside the drying chamber. The hot air circulation system includes a heating component, a circulating fan, and a guide air duct. The heating component and the circulating fan are both located in the inner cavity of one side of the drying chamber. The guide air duct connects the circulating fan and the bottom of the drying chamber. A dehumidification port is provided on the top of the drying chamber.

[0010] Optionally, the hot air circulation system further includes a flow equalization plate and a filter screen. The flow equalization plate is horizontally arranged below the supporting mechanism, and the flow equalization plate has multiple flow equalization holes. The filter screen covers the inside of the exhaust port.

[0011] Optionally, the drying chamber includes a door and an observation window. The door is hinged to one side of the drying chamber, and the observation window adopts a double-layer hollow glass structure and is fixedly installed on the door. A sealing strip is provided on the edge of the door.

[0012] Optionally, support legs are fixedly connected to the four bottom corners of the drying chamber, and universal wheels with self-locking function are fixedly installed at the bottom of the support legs.

[0013] This utility model provides a pill drying device with the following beneficial effects: The pill drying device operates through a drive mechanism, whose output power is transmitted to a rolling shaft via a coupling. Due to the meshing of multiple transmission gears, the rotation of a single rolling shaft drives all adjacent rolling shafts to rotate synchronously in the opposite direction. The pills placed above the rolling shaft thus receive a continuous and gentle rolling force. This force continuously changes the contact position and posture between the pills, effectively breaking down the initial adhesion formed by surface tension in the moistened pills, preventing clumping during the drying process. Simultaneously, the continuous rolling of the pills ensures that all points on their surface alternately contact hot air. Combined with the flow equalization plate at the bottom, the hot air passes evenly through the support mechanism and fully exchanges heat with the pill surface, significantly improving the drying uniformity of individual pills and the overall batch drying efficiency, thus ensuring the quality of the final product. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the overall structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the load-bearing mechanism of this utility model; Figure 3 This is a three-dimensional structural diagram of the drive mechanism in this utility model; In the diagram, 1. Drying chamber; 2. Load-bearing mechanism; 3. Drive mechanism; 4. Fixed frame; 5. Rolling shaft; 6. Transmission gear; 7. Drive motor; 8. Reducer; 9. Coupling; 10. Base; 11. Sealed bearing; 12. Partition plate; 13. Flexible material layer; 14. Hot air circulation system; 15. Heating component; 16. Circulating fan; 17. Air duct; 18. Air distribution plate; 19. Filter screen; 20. Exhaust port; 21. Chamber door; 22. Observation window; 23. Sealing strip; 24. Support leg; 25. Casters. Detailed Implementation To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please see Figures 1 to 3This utility model provides a pill drying device. The device mainly includes a drying chamber 1, a supporting mechanism 2 disposed inside the drying chamber 1, and a driving mechanism 3 installed outside the drying chamber 1.

[0021] The drying chamber 1 is the main structure of the overall device, defining an internal space for drying pills. A door 21 is hinged to one side of the drying chamber 1, and a sealing strip 23 is provided around the edge of the door 21. When the door 21 is closed, the sealing strip 23 fits tightly against the opening edge of the drying chamber 1, forming a sealed drying environment. An observation window 22 is fixedly installed on the door 21. The observation window 22 has a double-layer hollow glass structure, allowing observation of the drying status of the pills inside while also providing good heat insulation. A dehumidification vent 20 is located at the top of the drying chamber 1. The inner side of the dehumidification vent 20 is covered with a filter screen 19, whose mesh structure prevents dust or fine particles from being discharged with the moisture. The bottom of the drying chamber 1 is fixedly connected to four corners of a support leg 24. Each support leg 24 is fixedly installed with a caster wheel 25 with a self-locking function. The caster wheel 25 enables convenient movement of the device, and its self-locking function can securely lock the device after it is positioned.

[0022] The supporting mechanism 2 is located inside the drying chamber 1, and its specific structure includes a fixed frame 4, multiple rolling shafts 5, and multiple transmission gears 6. The fixed frame 4 is made of welded or bolted metal profiles, and its opposite inner walls are fixedly connected to the inner wall of the drying chamber 1, providing a stable installation base for the supporting mechanism 2. The multiple rolling shafts 5 are arranged in parallel at equal intervals along the horizontal direction, and the two ends of each rolling shaft 5 are rotatably connected to the opposite inner walls of the fixed frame 4 through bearings. The upper surfaces of these rolling shafts 5 together form a supporting platform on which the moistened pills are placed directly. In a specific embodiment, the interior of the rolling shafts 5 is a hollow structure, which reduces their weight. The outer peripheral wall of the rolling shafts 5 is covered with a flexible material layer 13, which is made of high-temperature resistant silicone or rubber. The outer surface of the flexible material layer 13 is processed with an anti-slip texture, such as a grid or wavy pattern, which increases the friction between the surface of the rolling shaft 5 and the pills. Multiple transmission gears 6 are respectively fixedly sleeved on the outer wall of one end of multiple rolling shafts 5 extending from the fixed frame 4, and each transmission gear 6 meshes with its adjacent transmission gear 6 to form a transmission gear set.

[0023] In another specific embodiment, the supporting mechanism 2 further includes multiple partition plates 12. The partition plates 12 are vertical, with their upper and lower ends fixedly connected to the upper and lower crossbeams of the fixed frame 4, and their left and right sides fixedly connected to the inner walls of opposite sides of the fixed frame 4. The orientation of the partition plates 12 is perpendicular to the axial direction of all the rolling shafts 5. By setting multiple partition plates 12, the internal space of the supporting mechanism 2 is divided into multiple parallel drying channels, allowing different batches or types of pills to be placed in different channels for simultaneous drying without interference.

[0024] The drive mechanism 3 is mounted on the outer wall of the drying chamber 1. In a specific embodiment, the drive mechanism 3 includes a drive motor 7, a reducer 8, and a coupling 9. A base 10 is fixedly mounted to the outer wall of the drying chamber 1 by bolts, and the drive motor 7 and reducer 8 are both fixedly mounted on the top of the base 10. The output shaft of the drive motor 7 is fixedly connected to the input end of the reducer 8. A through connection hole is provided on the side wall of the drying chamber 1 at the position corresponding to one of the rolling shafts 5, and a sealed bearing 11 is tightly fitted and fixedly mounted on the inner wall of the connection hole. One end of the rolling shaft 5 passes through the inner ring of the sealed bearing 11 and extends out of the drying chamber 1. The output end of the reducer 8 is fixedly connected to one end of the extended rolling shaft 5 via the coupling 9. The coupling 9 is located outside the drying chamber 1, and its structure compensates for the alignment error between the output shaft of the reducer 8 and the rolling shaft 5. The sealed bearing 11 supports the rotation of the rolling shaft 5 while also sealing the connection hole.

[0025] A hot air circulation system 14 is also fixedly installed inside the drying chamber 1. The hot air circulation system 14 includes a heating element 15, a circulating fan 16, and a guide air duct 17. The heating element 15, such as an electric heating tube assembly or a steam heat exchanger, and the circulating fan 16 are both located in an independent inner cavity on one side of the drying chamber 1. The guide air duct 17 is a sheet metal structure air duct, whose inlet is connected to the air outlet of the circulating fan 16, and whose outlet extends to the bottom of the drying chamber 1. The hot air circulation system 14 also includes a flow equalization plate 18, which is horizontally arranged below the supporting mechanism 2, and has multiple flow equalization holes evenly distributed on it.

[0026] The pill drying device provided by this utility model operates as follows: The operator opens the chamber door 21 and evenly spreads the moistened pills to be dried on the support platform composed of multiple rolling shafts 5. If a partition plate 12 is provided, the pills are placed in different drying channels. Then, the chamber door 21 is closed, and the sealing strip 23 is pressed to form a sealed space. After the device is started, the hot air circulation system 14 begins to work. The circulating fan 16 rotates, drawing in air from inside the drying chamber 1. The air temperature rises after flowing through the heating component 15, forming hot air. Under the pressure of the circulating fan 16, the hot air enters the guide air duct 17 and is guided to the bottom of the drying chamber 1. Then, the hot air passes through multiple equalization holes on the equalization plate 18, the airflow is evenly distributed, and flows from bottom to top at a relatively uniform speed, passing through the gap between the rolling shafts 5 of the support mechanism 2, and exchanging heat with the pills. The humid, hot air, having absorbed moisture from the surface of the pills, continues to rise to the top of the drying chamber 1. Part of it is discharged through the filter 19 and exhaust port 20, while the rest is drawn back in by the circulating fan 16 for recirculation and heating. Simultaneously, the drive mechanism 3 begins operation. The drive motor 7 starts and outputs torque, which is reduced and amplified by the reducer 8 before being transmitted to the directly connected rolling shaft 5 via the coupling 9, driving the rolling shaft 5 to rotate. Since the transmission gear 6 at the end of the rolling shaft 5 meshes with the transmission gear 6 of the adjacent rolling shaft 5, the rotation of the rolling shaft 5 immediately drives the adjacent rolling shaft 5 to rotate in the opposite direction at the same speed. This meshing transmission relationship is transmitted sequentially until all rolling shafts 5 rotate synchronously, with any two adjacent rolling shafts rotating in opposite directions. The pills placed on these counter-rotating rolling shafts 5 are subjected to a continuous rolling force. Driven by the rolling shafts 5, the pills continuously tumble, changing their posture and relative position. The flexible material layer 13 on the outer periphery of the rolling shaft 5 and its anti-slip texture increase the adhesion to the pills, making the rolling action more effective. The continuous rolling of the pills allows each surface to come into contact with the rising hot air, thus achieving uniform heating and drying of each pill.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pill drying device, characterized in that: The assembly includes a drying chamber (1), a supporting mechanism (2), and a driving mechanism (3), wherein: the supporting mechanism (2) is disposed inside the drying chamber (1), and the supporting mechanism (2) includes a fixed frame (4), rolling shafts (5), and transmission gears (6). The fixed frame (4) is fixedly connected to the inner walls of both sides of the drying chamber (1). The two ends of a plurality of rolling shafts (5) are rotatably connected to the inner walls of opposite sides of the fixed frame (4). The plurality of rolling shafts (5) are arranged in parallel at equal intervals along the horizontal direction. The transmission gears (6) are respectively fixedly sleeved on one end of the outer wall of the plurality of rolling shafts (5), and two adjacent transmission gears (6) mesh with each other; the drive mechanism (3) is installed on the outer wall of the drying box (1), and the output end of the drive mechanism (3) passes through the side wall of the drying box (1) and is fixedly connected to one of the rolling shafts (5). The drive mechanism (3) drives one of the rolling shafts (5) to rotate, and drives the other rolling shafts (5) to rotate synchronously in the opposite direction through the meshing transmission gears (6).

2. The pill drying apparatus according to claim 1, characterized in that: The drive mechanism (3) includes a drive motor (7), a reducer (8) and a coupling (9). The output shaft of the drive motor (7) is fixedly connected to the input end of the reducer (8), and the output end of the reducer (8) is fixedly connected to one end of one of the rolling shafts (5) via the coupling (9).

3. The pill drying apparatus according to claim 2, characterized in that: The drive mechanism (3) also includes a base (10) and a sealed bearing (11). The base (10) is fixedly installed on the outer side wall of the drying chamber (1). The drive motor (7) and the reducer (8) are both fixedly installed on the top of the base (10). The side wall of the drying chamber (1) is provided with a connection hole. The sealed bearing (11) is fixedly installed on the inner wall of the connection hole. The rolling shaft (5) passes through the inner ring of the sealed bearing (11) and is connected to the coupling (9).

4. The pill drying apparatus according to claim 1, characterized in that: The bearing mechanism (2) also includes partition plates (12), and multiple partition plates (12) are vertically fixed to the inner walls of opposite sides of the fixed frame (4), and the setting direction of the partition plates (12) is perpendicular to the axis of the rolling shaft (5).

5. The pill drying apparatus according to claim 1, characterized in that: The outer peripheral wall of the rolling shaft (5) is covered with a flexible material layer (13), the outer surface of the flexible material layer (13) is processed with anti-slip texture, and the interior of the rolling shaft (5) is a hollow structure.

6. The pill drying apparatus according to claim 1, characterized in that: The drying chamber (1) is equipped with a hot air circulation system (14). The hot air circulation system (14) includes a heating component (15), a circulating fan (16), and a guide air duct (17). The heating component (15) and the circulating fan (16) are both located in the inner cavity of one side of the drying chamber (1). The guide air duct (17) connects the circulating fan (16) and the bottom of the drying chamber (1). The top of the drying chamber (1) is provided with a dehumidification port (20).

7. A pill drying apparatus according to claim 6, characterized in that: The hot air circulation system (14) also includes a flow equalization plate (18) and a filter screen (19). The flow equalization plate (18) is horizontally arranged below the support mechanism (2). The flow equalization plate (18) has multiple flow equalization holes. The filter screen (19) covers the inside of the exhaust port (20).

8. The pill drying apparatus according to claim 1, characterized in that: The drying chamber (1) includes a door (21) and an observation window (22). The door (21) is hinged to one side of the drying chamber (1). The observation window (22) adopts a double-layer hollow glass structure and is fixedly installed on the door (21). A sealing strip (23) is provided on the edge of the door (21).

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