A pharmaceutical fluidized bed granulator

Abstract

The utility model discloses a medicinal fluidized bed granulator belongs to fluidized bed granulator drying mechanism technical field, the side surface fixed communication of granulator drying chamber body has the feed nozzle, the bottom of granulator drying chamber body is provided with the air inlet, and the one end of air inlet is clamped with cloth air distribution plate, and the surface fixed connection of air inlet has the scraping mechanism, and the side surface fixed connection of granulator drying chamber body has the air -blowing mechanism, this medicinal fluidized bed granulator, through the setting of the air -blowing pipe, guide pipe and annular distribution's air outlet, can add annular air duct in the wall area of granulator drying chamber body inner wall easy to stick, and the fine powder that sticks just falls, keeps the wall surface dry, reduces the adhesion, and through the setting of motor, rotating rod, scraper and scraper, can in the granulation drying gap or end, through motor drive scraper rotation, make it gently scrape wall surface adhering material, improve the heat and mass transfer efficiency, shorten drying time, reduce the cleaning difficulty.

Description

Technical Field

[0001] This utility model relates to the technical field of fluidized bed granulator drying mechanism, and more specifically, to a pharmaceutical fluidized bed granulator. Background Technology

[0002] A pharmaceutical fluidized bed granulator is a closed-loop device that uses airflow to suspend (fluidize) materials and uses a spray binder to agglomerate powder into granules. Its core functions integrate mixing, granulation, and drying, and it achieves efficient and continuous production through fluid mechanics and heat transfer technology.

[0003] Currently, when using commonly used fluidized bed granulators to dry materials, the materials (especially viscous materials such as traditional Chinese medicine extracts) tend to adhere to the chamber walls, affecting drying efficiency and potentially causing coking, which increases cleaning difficulty. For example, a fluidized bed drying granulator disclosed in publication number CN212975038 U includes a drying chamber, an air inlet, and an air distribution plate. The top of the drying chamber is equipped with an exhaust valve. The upper part of the drying chamber is cylindrical, and the lower part is conical. An inlet is provided on the lower side of the drying chamber. An atomizing nozzle is provided in the middle of the upper part of the drying chamber. The atomizing nozzle is installed on a pipe. One end of the pipe is fixed to the inner wall of the drying chamber, and the other end passes through the drying chamber. An air inlet is fixedly installed at the bottom of the drying chamber. The air inlet is cylindrical, and the diameter of the air inlet is the same as the diameter of the bottom of the drying chamber. An air distribution plate is fixedly installed at the bottom of the air inlet.

[0004] As can be seen from the above-disclosed scheme, the drying chamber of the granulator is prone to wet particles contacting the wall surface and fine powder adhering during use, which in turn leads to the formation of an adhesion layer on the inner wall of the drying chamber, greatly reducing the heat and mass transfer efficiency, prolonging the drying time, and greatly increasing the difficulty of cleaning after the adhering fine powder cokes. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a pharmaceutical fluidized bed granulator. This pharmaceutical fluidized bed granulator, through the setting of air blowing pipes, guide pipes, and annularly distributed air outlets, can add annular air ducts in the area of ​​the inner wall of the granulator drying chamber that is prone to sticking, blowing off the fine powder that has just adhered, keeping the wall surface dry, and reducing adhesion. Furthermore, through the setting of a motor, rotating rod, scraper, and scraper blade, the motor drives the scraper blade to rotate during the granulation drying interval or at the end, so that it can gently scrape off the material adhering to the wall surface, improving heat and mass transfer efficiency, shortening drying time, and reducing cleaning difficulty.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A pharmaceutical fluidized bed granulator includes a granulator drying chamber body. A feed nozzle is fixedly connected to the side of the granulator drying chamber body. An air inlet is provided at the bottom of the granulator drying chamber body. An air distribution plate is snapped onto one end of the air inlet. A scraping mechanism is fixedly connected to the surface of the air inlet. A blowing mechanism is fixedly connected to the side of the granulator drying chamber body. A top plate is provided at the top of the granulator drying chamber body. A nozzle pipe and an exhaust pipe are fixedly connected to the surface of the top plate. An exhaust valve is fixedly installed on the surface of the exhaust pipe. One end of the nozzle tube is fixedly connected to an atomizing nozzle. This pharmaceutical fluidized bed granulator, through the setting of an air blowing pipe, guide pipe and annularly distributed air outlet, can add an annular air channel in the area of ​​the inner wall of the granulator drying chamber that is prone to sticking, blow off the fine powder that has just adhered, keep the wall surface dry and reduce adhesion. In addition, through the setting of motor, rotating rod, scraper and scraper blade, the motor drives the scraper blade to rotate during the interval or end of granulation drying, so that it can gently scrape off the material adhering to the wall surface, improve heat and mass transfer efficiency, shorten drying time and reduce cleaning difficulty.

[0008] Furthermore, the blower mechanism includes an air blowing pipe, a control valve is fixedly installed on the surface of the air blowing pipe, one end of the air blowing pipe is fixedly connected to a variable frequency fan, and the other end of the air blowing pipe is fixedly connected to a guide ring. The guide ring can guide the airflow entering the air blowing pipe, thereby making the air passage set along the inner wall of the granulator drying chamber body.

[0009] Furthermore, the scraping mechanism includes a motor, one end of which is fixedly connected to a fixed plate, and a fixed rod is fixedly connected to the surface of the fixed plate. A rotating rod is fixedly connected to the output end of the motor. The rotating rod can rotate freely under the drive of the motor, thereby driving the scraper to rotate.

[0010] Furthermore, a crossbar is fixedly connected to the surface of the rotating rod, and a scraper is fixedly connected to one end of the crossbar. A scraper blade is fixedly installed on the surface of the scraper, and the surface of the scraper blade is slidably connected to the inner wall of the granulator drying chamber. When the scraper and scraper blade rotate, they can scrape off the material adhering to the inner wall of the granulator drying chamber.

[0011] Furthermore, the outer side of the guide ring is fixedly connected to the inner wall of the granulator drying chamber body, and an annular guide groove is provided inside the guide ring. An air outlet is fixedly connected inside the guide groove. The airflow blown out of the air outlet forms an air curtain along the inner wall of the granulator drying chamber body, which can blow off the fine powder that has just adhered.

[0012] Furthermore, a connecting lug is fixedly connected to the outer side of the air inlet, and a mounting hole is opened on the surface of the connecting lug. The inner wall of the mounting hole is fixedly connected to the surface of the fixing rod, which improves the installation firmness of the motor.

[0013] Furthermore, the scraper is a flexible scraper made of food-grade silicone, which prevents damage to the inner wall of the granulator drying chamber when scraping off materials.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) This solution can add an annular air duct in the area of ​​the dry chamber of the granulator that is prone to sticking by setting up air blowing pipe, guide pipe and annularly distributed air outlet, blow off the fine powder that has just adhered, keep the wall surface dry and reduce adhesion.

[0016] (2) This solution, through the motor, rotating rod, scraper and scraper blade, can drive the scraper blade to rotate during the interval or end of granulation drying, so as to gently scrape off the material adhering to the wall surface, improve the heat and mass transfer efficiency, shorten the drying time and reduce the cleaning difficulty. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the scraping mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the blower mechanism of this utility model;

[0020] Figure 4 for Figure 3 A partial cross-sectional view of the guide ring;

[0021] Figure 5 for Figure 1 A schematic diagram of the air inlet structure.

[0022] Explanation of the labels in the diagram:

[0023] 1. Pelletizer drying chamber body; 11. Top plate; 12. Feed nozzle; 13. Air inlet; 14. Air distribution plate; 15. Nozzle pipe; 16. Exhaust pipe; 17. Connecting ear; 18. Mounting hole; 2. Blowing mechanism; 21. Air blowing pipe; 22. Guide ring; 23. Guide groove; 24. Air outlet; 3. Scraping mechanism; 31. Motor; 32. Rotating rod; 33. Fixing plate; 34. Fixing rod; 35. Crossbar; 36. Scraper; 37. Scraper blade. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figure 1-5 A pharmaceutical fluidized bed granulator includes a granulator drying chamber body 1. A feed nozzle 12 is fixedly connected to the side of the granulator drying chamber body 1. One end of the feed nozzle 12 is fixedly connected to a material storage component to facilitate material entry into the granulator drying chamber body 1. An air inlet 13 is provided at the bottom of the granulator drying chamber body 1. One end of the air inlet 13 is snapped with an air distribution plate 14. The air distribution plate 14 is also provided with an air concentrator and an elastic locking triangle. A groove is provided on the inner wall of the air inlet 13 to facilitate the snapping and positioning of the air distribution plate 14 and to facilitate its assembly and disassembly. A scraping mechanism 3 is fixedly connected to the surface of the air inlet 13. The scraping mechanism 3 includes a motor 31. One end of the motor 31 is fixedly connected to a fixing plate 33. A fixing rod 34 is fixedly connected to the surface of the fixing plate 33. A rotating rod 32 is fixedly connected to the output end of the motor 31. The rotating rod 32 can rotate under the drive of the motor 31. The free rotation allows the scraper 36 to rotate. A blower mechanism 2 is fixedly connected to the side of the granulator drying chamber body 1. The blower mechanism 2 includes an air blowing pipe 21. A control valve is fixedly installed on the surface of the air blowing pipe 21. One end of the air blowing pipe 21 is fixedly connected to a variable frequency fan, and the other end of the air blowing pipe 21 is fixedly connected to a guide ring 22. The guide ring 22 can guide the airflow entering the air blowing pipe 21, so that the air passage is set along the inner wall of the granulator drying chamber body 1. A top plate 11 is provided on the top of the granulator drying chamber body 1. A nozzle pipe 15 and an exhaust pipe 16 are fixedly connected to the surface of the top plate 11. An exhaust valve is fixedly installed on the surface of the exhaust pipe 16. One end of the nozzle pipe 15 is fixedly connected to an atomizing nozzle, and the other end of the nozzle pipe 15 is fixedly connected to an adhesive spraying device, so that the adhesive can be sprayed into the interior of the granulator drying chamber body 1 through the atomizing nozzle.

[0027] A crossbar 35 is fixedly connected to the surface of the rotating rod 32. A scraper 36 is fixedly connected to one end of the crossbar 35. A scraper blade 37 is fixedly installed on the surface of the scraper 36. The surface of the scraper blade 37 is slidably connected to the inner wall of the granulator drying chamber body 1. When the scraper 36 and scraper blade 37 rotate, they can scrape off the material adhering to the inner wall of the granulator drying chamber body 1. The outer side of the guide ring 22 is fixedly connected to the inner wall of the granulator drying chamber body 1. An annular guide groove 23 is provided inside the guide ring 22. An air outlet 24 is fixedly connected inside the guide groove 23. The airflow blown out of the air outlet 24 forms an air curtain along the inner wall of the granulator drying chamber body 1, which can blow off the fine powder that has just adhered.

[0028] A connecting ear 17 is fixedly connected to the outside of the air inlet 13. The surface of the connecting ear 17 has a mounting hole 18. The inner wall of the mounting hole 18 is fixedly connected to the surface of the fixing rod 34, which improves the installation firmness of the motor 31. The scraper 37 is a flexible scraper made of food-grade silicone, so that the scraper 37 will not damage the inner wall of the granulator drying chamber 1 when scraping the material.

[0029] During the production process of this pharmaceutical fluidized bed granulator, the feed nozzle 12 conveys the material into the drying chamber 1 of the granulator. The atomizing nozzle sprays the adhesive into the drying chamber 1 of the granulator while the air distribution plate 14 blows air onto it to make the material and the adhesive come into contact and adhere. During this process, the air blowing pipe 21 blows air into the guide ring 22, and the airflow in the guide ring 22 blows downward through each air outlet 24, so that an air curtain is formed on the inner wall of the drying chamber 1 of the granulator, preventing the fine powder of the material from sticking to the wall. During the interval or end of the granulation drying process, the motor 31 is turned on. The operation of the motor 31 drives the rotating rod 32 to rotate, which drives the crossbar 35 to rotate, which drives the scraper 36 to rotate, and the scraper 36 drives the scraper blade 37 to move along the inner wall of the drying chamber 1 of the granulator, scraping off the material adhering to the inner wall of the drying chamber 1 of the granulator.

[0030] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A pharmaceutical fluidized bed granulator, comprising a granulator drying chamber body (1), characterized in that: A feed nozzle (12) is fixedly connected to the side of the drying chamber body (1) of the granulator. An air inlet (13) is provided at the bottom of the drying chamber body (1). An air distribution plate (14) is snapped onto one end of the air inlet (13). A scraping mechanism (3) is fixedly connected to the surface of the air inlet (13). A blower mechanism (2) is fixedly connected to the side of the drying chamber body (1). A top plate (11) is provided at the top of the drying chamber body (1). A nozzle pipe (15) and an exhaust pipe (16) are fixedly connected to the surface of the top plate (11). An exhaust valve is fixedly installed on the surface of the exhaust pipe (16). An atomizing nozzle is fixedly connected to one end of the nozzle pipe (15).

2. The pharmaceutical fluidized bed granulator according to claim 1, characterized in that: The blower mechanism (2) includes an air pipe (21), a control valve is fixedly installed on the surface of the air pipe (21), one end of the air pipe (21) is fixedly connected to a variable frequency fan, and the other end of the air pipe (21) is fixedly connected to a guide ring (22).

3. A pharmaceutical fluidized bed granulator according to claim 1, characterized in that: The scraping mechanism (3) includes a motor (31), one end of which is fixedly connected to a fixing plate (33), a fixing rod (34) is fixedly connected to the surface of the fixing plate (33), and a rotating rod (32) is fixedly connected to the output end of the motor (31).

4. A pharmaceutical fluidized bed granulator according to claim 3, characterized in that: A crossbar (35) is fixedly connected to the surface of the rotating rod (32), and a scraper (36) is fixedly connected to one end of the crossbar (35). A scraper blade (37) is fixedly installed on the surface of the scraper blade (36), and the surface of the scraper blade (37) is slidably connected to the inner wall of the drying chamber body (1) of the granulator.

5. A pharmaceutical fluidized bed granulator according to claim 2, characterized in that: The outer side of the guide ring (22) is fixedly connected to the inner wall of the drying chamber body (1) of the granulator. The inside of the guide ring (22) is provided with an annular guide groove (23), and the inside of the guide groove (23) is fixedly connected with an air outlet (24).

6. A pharmaceutical fluidized bed granulator according to claim 3, characterized in that: A connecting ear (17) is fixedly connected to the outside of the air inlet (13). The surface of the connecting ear (17) has a mounting hole (18). The inner wall of the mounting hole (18) is fixedly connected to the surface of the fixing rod (34).

7. A pharmaceutical fluidized bed granulator according to claim 4, characterized in that: The scraper (37) is a flexible scraper made of food-grade silicone.

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