Pharmaceutical centrifugal spray drier

Abstract

The utility model relates to drying machine technical field especially relates to a centrifugal spray drier for pharmacy. The centrifugal spray drier for pharmacy includes drying jar, the bottom of drying jar is equipped with heating assembly, the inside of drying jar is equipped with gas guide component, and the inner top of drying jar is installed with centrifugal atomizer. The centrifugal spray drier for pharmacy provided by the utility model can heat the side wall of the conical jar to heat the inside of the conical jar, improve the temperature of the side wall, when the powder particles fall on the inner wall of the conical jar, can continue heating the powder particles, thereby can reduce the phenomenon that the powder is not completely dried and adhered to the inner wall of the conical jar.

Description

Technical Field

[0001] This utility model relates to the field of drying technology, and in particular to a centrifugal spray dryer for pharmaceutical use. Background Technology

[0002] A pharmaceutical centrifugal spray dryer is a drying device that converts liquid materials (solutions, emulsions, suspensions, slurries) into extremely fine mist droplets through a high-speed rotating centrifugal atomizer, and evaporates the moisture instantly (from a few seconds to tens of seconds) in a closed hot air system, thereby directly obtaining dry powder or granules.

[0003] Existing centrifugal spray dryers typically only have one hot air inlet at the top for hot air input. This method of hot air input causes the hot air to blow downwards, which accelerates the falling speed of the powder formed after spray drying. Consequently, insufficient drying time can lead to incomplete drying of powder particles, resulting in adhesion to the inner wall of the drying tank.

[0004] Therefore, it is necessary to provide a new centrifugal spray dryer for pharmaceuticals to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a centrifugal spray dryer for pharmaceutical use.

[0006] The pharmaceutical centrifugal spray dryer provided by this utility model includes: a drying tank, a heating component at the bottom of the drying tank, a gas guiding component inside the drying tank, and a centrifugal atomizer installed at the top inside the drying tank;

[0007] The heating assembly includes a conical tank, which is fixedly installed at the bottom of the drying tank and communicates with its interior. A mounting groove is provided on the side wall of the conical tank, and a heating rod is embedded inside the mounting groove.

[0008] The air guiding assembly includes an air inlet pipe, which is installed inside the drying tank. The air inlet pipe is a three-way pipe, and an exhaust ring is installed at one end of the air inlet pipe inside the drying tank. The exhaust ring is fixedly connected to the inner wall of the drying tank.

[0009] Preferably, the air guiding assembly includes a mounting shell, which is fixedly mounted inside the drying tank. The interior of the mounting shell is connected to the other end of the air inlet pipe located inside the drying tank. A rotating pipe is rotatably connected inside the mounting shell, and an air inlet hole communicating with the interior of the rotating pipe is opened on the side wall inside the mounting shell.

[0010] Preferably, the bottom end of the rotating tube extends to the outside of the mounting shell and is fixedly installed with multiple connected tubes, and the outer wall of the connected tubes is provided with an exhaust hole.

[0011] Preferably, a scraper is fixedly connected to the outer wall of the connecting pipe, and the outer wall of the scraper abuts against and is slidably connected to the inner wall of the conical tank.

[0012] Preferably, the heating assembly further includes a heat-insulating semi-ring, two of which are symmetrically installed on the conical tank. The inner wall of the heat-insulating semi-ring abuts against the outer wall of the heating rod. A through hole is provided on the side wall of the conical tank. A fixedly connected adapter pipe is installed on the side wall of the heat-insulating semi-ring, and the interior of the adapter pipe communicates with the through hole.

[0013] Preferably, a rotatably connected drive rod is inserted inside the mounting shell, a fixedly connected worm gear is sleeved on the outer wall of the drive rod, a meshing worm wheel is provided on the outside of the worm gear, the worm wheel is fixedly sleeved on the rotating tube, and a motor for controlling the rotation of the drive rod is fixedly installed on the outer wall of the drying tank.

[0014] Compared with related technologies, the pharmaceutical centrifugal spray dryer provided by this utility model has the following beneficial effects:

[0015] 1. This utility model can heat the side wall of the conical can to raise the internal temperature of the conical can and increase the temperature of its side wall. When the powder particles fall onto the inner wall of the conical can, the powder particles can continue to be heated, thereby reducing the phenomenon of powder not being completely dried and adhering to the inner wall of the conical can.

[0016] 2. When this utility model is in use, the connecting pipe in the air guiding component will spray external hot air upward from the inside of the conical can, thereby blowing the falling dust particles upward, increasing the floating time of the dust particles in the air, reducing their falling speed, and thus allowing the hot air to more fully dry the spray.

[0017] 3. By rotating the connecting pipe during use, the rotating connecting pipe will drive the external scraper to move synchronously, thereby scraping the inner wall of the conical tank and further reducing the phenomenon of dust residue on the inner wall of the conical tank. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the pharmaceutical centrifugal spray dryer provided by this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the connection between the drying tank and the conical tank shown;

[0020] Figure 3 for Figure 1 A partial cross-sectional structural diagram of the insulation semi-ring and its components is shown.

[0021] Figure 4 for Figure 1 A partial cross-sectional structural diagram of the air guiding assembly is shown.

[0022] The following are the labeling elements in the diagram: 1. Drying tank; 2. Heating assembly; 21. Conical tank; 211. Mounting groove; 212. Through hole; 22. Insulation semi-ring; 221. Adaptor pipe; 23. Heating rod; 3. Air guide assembly; 31. Air inlet pipe; 311. Exhaust ring; 32. Mounting shell; 321. Rotating pipe; 322. Air inlet; 33. Drive rod; 331. Worm gear; 332. Worm wheel; 34. Connecting pipe; 341. Exhaust port; 35. Scraper; 4. Centrifugal atomizer. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] Please see Figures 1 to 4 This utility model provides a pharmaceutical centrifugal spray dryer, which includes: a drying tank 1, a heating component 2 at the bottom of the drying tank 1, a gas guiding component 3 inside the drying tank 1, and a centrifugal atomizer 4 installed at the top inside the drying tank 1.

[0026] In the embodiments of this utility model, please refer to Figures 1 to 4 The heating assembly 2 includes a conical tank 21, which is fixedly installed at the bottom of the drying tank 1 and communicates with its interior. The side wall of the conical tank 21 has an installation groove 211, and a heating rod 23 is embedded inside the installation groove 211. The heating assembly 2 also includes a heat-insulating semi-ring 22, which has two parts and is symmetrically installed on the conical tank 21. The inner wall of the heat-insulating semi-ring 22 abuts against the outer wall of the heating rod 23. The side wall of the conical tank 21 has a through hole 212, and a fixedly connected adapter pipe 221 is installed on the side wall of the heat-insulating semi-ring 22, and the interior of the adapter pipe 221 communicates with the through hole 212.

[0027] It should be noted that: through the setting of heating component 2, during use, the heating rod 23 embedded in the side wall of conical can 21 can heat the side wall of conical can 21, thereby raising the internal temperature of conical can 21 and increasing the temperature of its side wall. When powder particles fall onto the inner wall of the conical can, the powder particles can continue to be heated, thereby reducing the phenomenon of powder not being completely dried and adhering to the inner wall of conical can 21.

[0028] In the embodiments of this utility model, please refer to Figures 1 to 4 The air guiding assembly 3 includes an air inlet pipe 31, which is installed inside the drying tank 1. The air inlet pipe 31 is a three-way pipe. One end of the air inlet pipe 31 inside the drying tank 1 is equipped with a connected exhaust ring 311, and the exhaust ring 311 is fixedly connected to the inner wall of the drying tank 1. The air guiding assembly 3 includes a mounting shell 32, which is fixedly installed inside the drying tank 1. The interior of the mounting shell 32 is connected to the other end of the air inlet pipe 31 inside the drying tank 1. A rotating pipe 321 is rotatably connected inside the mounting shell 32. An air inlet hole 322 communicating with the interior is opened on the side wall of the rotating pipe 321 inside the mounting shell 32. The bottom end of the rotating pipe 321 extends to the outside of the mounting shell 32 and is fixedly installed with multiple connected connecting pipes 34. An exhaust hole 341 is opened on the outer wall of the connecting pipe 34. A scraper 35 is fixedly connected on the outer wall of the connecting pipe 34, and the outer wall of the scraper 35 abuts against and slides against the inner wall of the conical tank 21.

[0029] It should be noted that, through the configuration of the air guiding component 3, during use, the connecting pipe 34 in the air guiding component 3 will spray external hot air upward from the inside of the conical canister 21, thereby blowing the falling dust particles upward, increasing the floating time of the dust particles in the air, reducing their falling speed, and thus allowing the hot air to more fully dry the spray.

[0030] In the embodiments of this utility model, please refer to Figures 1 to 4 The interior of the mounting shell 32 is fitted with a rotatably connected drive rod 33. The outer wall of the drive rod 33 is fitted with a fixedly connected worm gear 331. The worm gear 331 is fitted with a meshing worm wheel 332 on the outside. The worm wheel 332 is fixedly fitted on the rotating tube 321. A motor for controlling the rotation of the drive rod 33 is fixedly installed on the outer wall of the drying tank 1.

[0031] It should be noted that, due to the configuration of the drive rod 33, during use, when the drive rod 33 drives the worm gear 331 to rotate, it meshes with the worm wheel 332 to drive the rotating pipe 321 and the connecting pipe 34 below it to rotate. This allows the hot air ejected from the connecting pipe 34 to be discharged more evenly. Furthermore, during the rotation of the connecting pipe 34, the scraper 35 can also be driven to rotate. By the scraper 35 abutting against the inner wall of the conical tank 21, the powder particles on the inner wall of the conical tank 21 can be scraped and cleaned, thereby making the discharge of powder particles smoother.

[0032] The working principle of the pharmaceutical centrifugal spray dryer provided by this utility model is as follows:

[0033] When using this device, the air inlet pipe 31, centrifugal atomizer 4 and adapter pipe 221 in this device can be connected to the external hot air source, feed pump and cyclone separator to complete the installation of this device.

[0034] Then, when the external feed pump is working, the liquid medicine can be delivered to the centrifugal atomizer 4. The working centrifugal atomizer 4 can atomize the liquid medicine. During this process, the external hot air source can be delivered to the exhaust ring 311 and the mounting shell 32 through the air inlet pipe 31. The hot air entering the exhaust ring 311 can be sprayed downwards, thereby drying the spray.

[0035] The hot air entering the mounting housing 32 will flow into the connecting pipe 34 through the air inlet 322 in the rotating pipe 321, and then be discharged outward through the exhaust port 341 in the connecting pipe 34. This will blow the dried dust upward, thereby increasing the dust's floating time in the air, reducing the dust's falling speed, and allowing the hot air to dry the dust more thoroughly.

[0036] Meanwhile, the heating rod 23, which works at the same time, can heat the inner wall of the conical tank 21. Thus, when dust falls onto the side wall of the conical tank 21, the heated side wall can reheat and dry the falling dust, reducing the phenomenon of dust adhering to the side wall of the conical tank 21. During the operation, the external motor can also be controlled to drive the drive rod 33 to rotate.

[0037] The rotating drive rod 33 will drive the worm 331 on the outer wall to rotate. The rotating worm 331 can drive the rotating tube 321 to rotate through meshing with the worm wheel 332, thereby driving the connecting tube 34 connected to it to rotate. At this time, the connecting tube 34 can drive the external scraper 35 to rotate along the inner wall of the conical tank 21 to scrape the inner wall of the conical tank 21. Therefore, the dust dried on the conical tank 21 can be discharged more smoothly.

[0038] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0039] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A centrifugal spray dryer for pharmaceutical use, characterized in that, include: A drying tank (1) is provided with a heating component (2) at the bottom of the drying tank (1), a gas guiding component (3) is provided inside the drying tank (1), and a centrifugal atomizer (4) is installed at the top inside the drying tank (1). The heating assembly (2) includes a conical tank (21), which is fixedly installed at the bottom of the drying tank (1) and communicates with its interior. An installation groove (211) is provided on the side wall of the conical tank (21), and a heating rod (23) is embedded inside the installation groove (211). The air guide assembly (3) includes an air inlet pipe (31), which is installed inside the drying tank (1). The air inlet pipe (31) is a three-way pipe. One end of the air inlet pipe (31) inside the drying tank (1) is equipped with a communicating exhaust ring (311), and the exhaust ring (311) is fixedly connected to the inner wall of the drying tank (1).

2. The pharmaceutical centrifugal spray dryer according to claim 1, characterized in that, The air guiding assembly (3) includes a mounting shell (32), which is fixedly mounted inside the drying tank (1). The interior of the mounting shell (32) is connected to the other end of the air inlet pipe (31) located inside the drying tank (1). A rotating pipe (321) is rotatably connected inside the mounting shell (32), and an air inlet hole (322) communicating with the interior of the rotating pipe (321) is opened on the side wall inside the mounting shell (32).

3. The pharmaceutical centrifugal spray dryer according to claim 2, characterized in that, The bottom end of the rotating tube (321) extends to the outside of the mounting shell (32) and is fixedly installed with a plurality of connected connecting tubes (34), and an exhaust hole (341) is provided on the outer wall of the connecting tube (34).

4. The pharmaceutical centrifugal spray dryer according to claim 3, characterized in that, A fixedly connected scraper (35) is installed on the outer wall of the connecting pipe (34), and the outer wall of the scraper (35) abuts against and slides against the inner wall of the conical tank (21).

5. The pharmaceutical centrifugal spray dryer according to claim 1, characterized in that, The heating assembly (2) also includes a heat-insulating semi-ring (22), two of which are symmetrically installed on the conical tank (21). The inner wall of the heat-insulating semi-ring (22) abuts against the outer wall of the heating rod (23). A through hole (212) is provided on the side wall of the conical tank (21). A fixedly connected adapter pipe (221) is installed on the side wall of the heat-insulating semi-ring (22), and the interior of the adapter pipe (221) communicates with the through hole (212).

6. The pharmaceutical centrifugal spray dryer according to claim 2, characterized in that, A rotatably connected drive rod (33) is inserted inside the mounting shell (32). A fixedly connected worm gear (331) is sleeved on the outer wall of the drive rod (33). A meshing worm wheel (332) is provided on the outside of the worm gear (331). The worm wheel (332) is fixedly sleeved on the rotating tube (321). A motor for controlling the rotation of the drive rod (33) is fixedly installed on the outer wall of the drying tank (1).

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