Fluidized bed granulation and drying device for traditional Chinese medicine preparation

Abstract

A fluidized bed granulation and drying device for traditional Chinese medicine preparations belongs to the field of fluidized bed granulation and drying technology. This invention solves the technical problem of low output quality caused by dead zones and channeling in existing multi-functional granulation devices due to their structural design. An air distribution plate is installed at the bottom of the granulation chamber, and an air ring is installed on the lower part of the top surface of the granulation chamber. The air ring is annular with an arc-shaped longitudinal section. The top side of the air ring's longitudinal section is tangent to the top surface of the granulation chamber, and the bottom side of the air ring's longitudinal section is tangent to the side of the granulation chamber. An air equalization component is laid on the upper side of the air distribution plate. The air equalization component includes an air equalization net and a spiral scraper. The spiral scraper is rotatably installed on the lower bottom surface of the air equalization net along a horizontal circumferential direction. The spiral scraper includes a sleeve and blades, with three blades evenly installed on the outside of the sleeve. A rotating shaft is fixedly installed at the center of the lower bottom surface of the air equalization net, and the sleeve is fitted onto the outside of the rotating shaft. This improves the output quality. This invention is used for the granulation of traditional Chinese medicine.

Description

Technical Field

[0001] This utility model relates to a fluidized bed granulation and drying device for traditional Chinese medicine preparations, belonging to the field of fluidized bed granulation and drying technology. Background Technology

[0002] The multi-functional granulation unit is a multi-functional piece of equipment that integrates granulation and drying. It is mainly suitable for processes in the Chinese and Western medicine, food, and chemical industries where mixing, granulation, pelleting, and drying are completed simultaneously. Examples include granules before tableting, hard capsule granules, Chinese and Western medicine granules, solid beverages, and solid instant granules, especially suitable for sustained-release capsules and granules. The dried granular material can be made into solid instant powders, used as raw material for tablet pressing, and filled into pellets and capsules. The entire machine operates under clean air negative pressure, and the internal surfaces of the equipment are smooth.

[0003] The granulation chamber of existing multi-functional granulation devices is mostly shaped like an inverted frustum, and the inner corner of its upper edge is prone to forming a dead zone, which leads to the discovery of lumps and wet lumps during discharge. In addition, the small holes of the air caps on the existing air distribution plates are blocked by fine powder or sticky materials, resulting in uneven airflow, which in turn leads to the formation of channels in the granulation chamber and affects the quality of the output.

[0004] In summary, existing multi-functional pelleting devices are prone to dead zones and channeling due to their structural design, resulting in low output quality. Utility Model Content

[0005] This invention aims to solve the technical problem that existing multi-functional granulation devices are prone to dead zones and channeling due to their own structural reasons, resulting in low output quality. Therefore, it provides a fluidized bed granulation and drying device for traditional Chinese medicine preparations. It includes a main unit, which includes an upper box, a granulation chamber and a lower box installed from top to bottom. An air distribution plate is installed at the bottom of the granulation chamber. The outline shape of the granulation chamber is an inverted frustum. An air ring is installed at the lower part of the top surface of the granulation chamber. The air ring is annular and has an arc-shaped longitudinal section. The top side of the longitudinal section of the air ring is tangent to the top surface of the granulation chamber, and the bottom side of the longitudinal section of the air ring is tangent to the side of the granulation chamber.

[0006] An air distribution assembly is laid on the upper side of the air distribution plate. The air distribution assembly includes an air distribution net and a spiral scraper. The spiral scraper is rotatably installed on the lower surface of the air distribution net along the horizontal circumferential direction.

[0007] The spiral scraper includes a sleeve and blades. Three blades are evenly installed on the outside of the sleeve. A rotating shaft is fixedly installed at the center of the bottom surface of the air distribution net, and the sleeve is fitted on the outside of the rotating shaft.

[0008] As another improvement of this utility model, the blades of the spiral scraper are spiral in shape. The blades are driven by the flowing air in the granulation chamber and rotate, thereby achieving the scraping action on the top surface of the air distribution plate and the bottom surface of the air distribution net.

[0009] As another improvement of this utility model, a limiting ring is installed in the middle of the top surface of the air distribution plate to limit the horizontal movement of the sleeve.

[0010] As another improvement of this utility model, a limiting protrusion is installed on the lower inner side of the granulation chamber to vertically limit the air distribution network.

[0011] As another improvement of this utility model, the main unit also includes an exhaust fan and an air purification and heating device. The air purification and heating device is connected to the lower box, and the exhaust fan is connected to the upper box.

[0012] The air purification and heating device includes an air inlet filter and an air heater, which are connected in sequence to the lower housing;

[0013] The upper chamber is equipped with a cloth bag, which is used to capture the material powder in the granulation chamber.

[0014] As another improvement of this utility model, the wind-dissipating mesh is a single-layer stainless steel wire mesh.

[0015] As another improvement of this utility model, the mesh count of the uniform wind net is 60-100 mesh.

[0016] As another improvement of this utility model, a mobile platform is installed on the lower part of the lower box body. The mobile platform includes a fixed frame, a support plate and a rotating wheel. The fixed frame is installed on the upper part of the support plate and the rotating wheel is installed on the lower part of the support plate. The lower box body is detachably installed on the fixed frame and the granulation chamber is detachably installed on the upper side of the lower box body.

[0017] As another improvement of this utility model, the wind ring is made of stainless steel.

[0018] As another improvement of this utility model, the blade is made of stainless steel.

[0019] The beneficial effects of this utility model are:

[0020] This utility model discloses a fluidized bed granulation and drying device for traditional Chinese medicine preparations. By installing an air ring on the lower part of the top surface of the granulation chamber, the dead zone that is easy to form at the inner corner of the upper edge of the granulation chamber is effectively avoided. At the same time, the air distribution component laid on the upper side of the air distribution plate improves the channeling situation that is easy to form in the granulation chamber and improves the output quality of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the granulation chamber.

[0022] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0023] Figure 3 It is along Figure 1 Schematic diagram of the cross section of the BB line.

[0024] Figure 4 This is a schematic diagram of the overall structure of a fluidized bed granulation and drying device for traditional Chinese medicine preparations according to this utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the wind distribution network and the spiral scraper. Detailed Implementation

[0026] The technical solutions in 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. All embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Specific implementation method one: Combining Figures 1 to 5 This embodiment describes a fluidized bed granulation and drying device for traditional Chinese medicine preparations. It includes a main unit, which comprises an upper housing 1, a granulation chamber 2, and a lower housing 3 installed sequentially from top to bottom. An air distribution plate 4 is installed at the bottom of the granulation chamber 2. The outline shape of the granulation chamber 2 is an inverted frustum shape. An air ring 5 is installed at the lower part of the top surface of the granulation chamber 2. The air ring 5 is annular and has an arc-shaped longitudinal section. The top side of the longitudinal section of the air ring 5 is tangent to the top surface of the granulation chamber 2, and the bottom side of the longitudinal section of the air ring 5 is tangent to the side of the granulation chamber 2.

[0028] An air distribution assembly is laid on the upper side of the air distribution plate 4. The air distribution assembly includes an air distribution net 6 and a spiral scraper. The spiral scraper is rotatably installed on the lower surface of the air distribution net 6 along the horizontal circumferential direction.

[0029] The spiral scraper includes a sleeve 8 and blades 9. Three blades 9 are evenly installed on the outside of the sleeve 8. A rotating shaft is fixedly installed at the center of the lower bottom surface of the air distribution net 6, and the sleeve 8 is fitted on the outside of the rotating shaft.

[0030] By installing a wind ring at the lower part of the top surface of the pelleting chamber, the dead zone that is easy to form at the inner corner of the upper edge of the pelleting chamber is effectively avoided. At the same time, the air distribution component laid on the upper side of the air distribution plate improves the channeling situation already formed in the pelleting chamber and improves the output quality of this embodiment.

[0031] Specific Implementation Method Two: Combining Figures 1 to 5This embodiment differs from specific embodiment one in that the blades 9 of the spiral scraper are spiral-shaped. Driven by the flowing air within the granulation chamber 2, the blades 9 rotate, thereby scraping the top surface of the air distribution plate 4 and the bottom surface of the air distribution mesh 6. The shape of the blades 9 needs to be designed according to the air velocity in the granulation chamber. The rotation speed of the spiral scraper should not be too fast to avoid affecting the normal fluidization of the material in the granulation chamber. Other components and connections are the same as in specific embodiment one.

[0032] Specific implementation method three: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that a limiting ring 10 is installed at the center of the top surface of the air distribution plate 4, which horizontally limits the sleeve 8. Other components and connection methods are the same as in specific embodiment one or two.

[0033] Specific implementation method four: Combination Figures 1 to 5 This embodiment differs from specific embodiment one in that a limiting protrusion 11 is installed on the lower inner side of the granulation chamber 2, which vertically limits the air distribution mesh 6. The air distribution mesh is detachable and is secured to the inner wall of the granulation chamber by the limiting protrusion. This facilitates subsequent maintenance and is quick to install. Other components and connection methods are the same as any one of specific embodiments one to three.

[0034] Specific Implementation Method Five: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that the main unit also includes an exhaust fan 12 and an air purification and heating device. The air purification and heating device is connected to the lower housing 3, and the exhaust fan 12 is connected to the upper housing 1.

[0035] The air purification and heating device includes an air inlet filter and an air heater, which are connected in sequence to the lower housing 3;

[0036] A filter bag is installed inside the upper chamber 1 to capture the powdered material in the granulation chamber 2. The powdered material to be granulated is fed into the granulation chamber in one go. A high-speed hot airflow suspends the material in a fluidized state. It is preheated and mixed by the purified hot air, and the circulating flow achieves uniform mixing. The binder solution is atomized, and several particles are aggregated into granules containing the binder. The granules form an orderly movement within the bed, achieving precise granulation. As the hot air continuously dries the granules, the moisture in the granules evaporates, and the binder solidifies. This process is repeated continuously to form ideal, uniform, multi-porous spherical particles. The materials produced can be used for the reprocessing of medicines such as Baixian Xiatare tablets, Shubitong tablets, Chuansou Ning tablets, Guanmai Kang tablets, Dandeng Tongnao tablets, Jiannaoling tablets, Changma Xifeng tablets, Qianlie Antong capsules, Ruhe Neixiao capsules, Shangtong Ning capsules, Tongzhi Surunjiang capsules, Gentongping capsules, Tianqi Tongjing capsules, Guben Kechuan capsules, Kebitai capsules, Xiaoke Jiangtang capsules, Weiyang An capsules, Qiju Dihuang capsules, Juhong Tanke granules, Kangyuan granules, Lutongning granules, Zaoren Anshen granules, Kanglao granules, Compound Tianma granules, and Paishi Lidan granules. The aforementioned medicines are only used to illustrate the practicality of this embodiment. Other components and connection methods are the same as any one of specific embodiments one to four.

[0037] Specific Implementation Method Six: Combination Figures 1 to 5 This embodiment differs from specific embodiment one in that the air distribution mesh 6 is a single-layer stainless steel wire mesh. This design results in a simple, reliable structure that is easy to process. Other components and connection methods are the same as in any one of specific embodiments one through five.

[0038] Specific implementation method seven: Combination Figures 1 to 5 This embodiment differs from specific embodiment one in that the mesh size of the equalizing mesh 6 is 60-100 mesh. This design is beneficial for improving the quality of the output material. Other components and connection methods are the same as any one of specific embodiments one through six.

[0039] Specific implementation method eight: Combination Figures 1 to 5 This embodiment differs from specific embodiment one in that a movable platform is installed at the lower part of the lower housing 3. The movable platform includes a fixed frame, a support plate, and wheels. The fixed frame is installed on the upper part of the support plate, and the wheels are installed on the lower part of the support plate. The lower housing 3 is detachably mounted on the fixed frame, and the granulation chamber 2 is detachably mounted on the upper side of the lower housing 3. This design facilitates the assembly and disassembly of the lower housing and the granulation chamber, thereby improving processing efficiency. Other components and connection methods are the same as any one of specific embodiments one to seven.

[0040] Specific Implementation Method Nine: Combining Figures 1 to 5This embodiment differs from specific embodiment one in that the fan ring 5 is made of stainless steel or polytetrafluoroethylene. This design results in a smooth surface that is easy to clean. Other components and connection methods are the same as in any one of specific embodiments one through eight.

[0041] Specific Implementation Method Ten: Combining Figures 1 to 5 This embodiment differs from specific embodiment one in that blade 9 is made of stainless steel. This design ensures structural reliability, and the blades can also be made of plastic for easier processing. Other components and connection methods are the same as in any one of specific embodiments one through nine.

[0042] Combination Figures 1 to 5 Explanation of the working principle of this utility model:

[0043] The powdered material to be granulated is fed into the granulation chamber in one go. A high-speed hot airflow suspends the material in a fluidized state. Preheated and mixed by purified hot air, the material circulates to achieve uniform mixing, atomizing the binder solution and agglomerating several particles into granules containing the binder. These granules move in an orderly manner within the bed, achieving precise granulation. As the hot air continuously dries the granules, the moisture evaporates, and the binder solidifies. This process is repeated continuously, forming ideal, uniform, multi-porous spherical particles. By installing a fan ring at the lower part of the top surface of the granulation chamber, dead zones that easily form at the inner corners of the upper edge of the granulation chamber are effectively avoided. Simultaneously, the air distribution components laid on the upper side of the air distribution plate improve the flow within the granulation chamber, thus enhancing the output quality of this invention.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fluidized bed granulation and drying device for traditional Chinese medicine preparations, characterized in that... It includes a main unit, which includes an upper box (1), a granulation chamber (2) and a lower box (3) installed from top to bottom. A distribution plate (4) is installed at the bottom of the granulation chamber (2). The outline shape of the granulation chamber (2) is an inverted frustum. A wind ring (5) is installed at the bottom of the top surface of the granulation chamber (2). The wind ring (5) is annular. The longitudinal section shape of the wind ring (5) is arc-shaped. The top side of the longitudinal section of the wind ring (5) is tangent to the top surface of the granulation chamber (2). The bottom side of the longitudinal section of the wind ring (5) is tangent to the side of the granulation chamber (2). The upper side of the air distribution plate (4) is covered with an air distribution component, which includes an air distribution net (6) and a spiral scraper. The spiral scraper is rotatably installed on the lower surface of the air distribution net (6) along the horizontal circumferential direction. The spiral scraper includes a sleeve (8) and blades (9). Three blades (9) are evenly installed on the outside of the sleeve (8). A rotating shaft is fixedly installed at the center of the bottom surface of the wind distribution net (6), and the sleeve (8) is fitted on the outside of the rotating shaft.

2. The fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, The blades (9) of the spiral scraper are spiral in shape. The blades (9) are driven by the flowing air in the granulation chamber (2) and rotate, thereby achieving the scraping action on the top surface of the air distribution plate (4) and the bottom surface of the air distribution net (6).

3. The fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, A limit ring (10) is installed in the middle of the top surface of the air distribution plate (4) to limit the horizontal movement of the sleeve (8).

4. The fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, Limiting protrusions (11) are installed on the lower inner side of the granulation chamber (2) to vertically limit the air distribution network (6).

5. The fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, The main unit also includes an exhaust fan (12) and an air purification and heating device. The air purification and heating device is connected to the lower box (3), and the exhaust fan (12) is connected to the upper box (1). The air purification heating device includes an air inlet filter and an air heater, which are connected in sequence to the air inlet filter, the air heater and the lower box (3); A cloth bag is installed inside the upper box (1) to capture the material powder in the granulation chamber (2).

6. The fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, Junfeng Net (6) is a single-layer stainless steel wire mesh.

7. A fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 6, characterized in that, The mesh size of the Junfeng net (6) is 60-100 mesh.

8. A fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, A mobile platform is installed on the lower part of the lower box (3). The mobile platform includes a fixed frame, a support plate and a rotating wheel. The fixed frame is installed on the upper part of the support plate and the rotating wheel is installed on the lower part of the support plate. The lower box (3) is detachably installed on the fixed frame and the granulation chamber (2) is detachably installed on the upper side of the lower box (3).

9. A fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, The wind ring (5) is made of stainless steel or polytetrafluoroethylene.

10. A fluidized bed granulation and drying apparatus for traditional Chinese medicine preparations according to claim 1, characterized in that, The blade (9) is made of stainless steel.

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