High-speed centrifugal spray dryer capable of uniformly spraying

Abstract

The utility model relates to the field of spray dryers, and discloses a high-speed centrifugal spray dryer capable of spraying uniformly, which comprises a rack, a feed liquid barrel, a delivery pump, a dryer and a heating component are fixedly connected to the top of the rack in sequence from left to right, and a mixing motor is fixedly connected to the top of the feed liquid barrel. A conveying pipe is arranged between the input end of the conveying pump and the feed liquid barrel, a conveying pipe is arranged between the output end of the conveying pump and the drying machine, a filtering assembly is arranged on the outer wall of the drying machine at the output end of the conveying pump, and a rotary dispersing assembly is arranged in the drying machine and comprises a rotary motor. And the rotating motor is fixedly connected to the bottom of the drying machine. According to the utility model, the rotating shaft is driven to rotate at a high speed by the rotating motor in the rotating dispersing assembly, and the mounting sleeve, the spraying pipe and the atomizing nozzle are driven to work cooperatively, so that the feed liquid is dispersed into uniform and fine fog drops under the action of centrifugal force, and the contact area between the feed liquid and hot air is increased.

Description

Technical Field

[0001] This utility model relates to the field of spray dryers, and more particularly to a high-speed centrifugal spray dryer with uniform spray. Background Technology

[0002] A spray dryer is a device that utilizes hot air to fully contact atomized liquid material, causing the moisture in the liquid to evaporate rapidly, thereby achieving drying. It is widely used in many industries such as food, pharmaceuticals, and chemicals, playing a vital role in areas such as milk powder production, pharmaceutical preparation, and chemical raw material drying. Through spray drying technology, liquid materials can be rapidly converted into solid powders, effectively preserving the material's composition and properties.

[0003] Traditional spray dryers mostly employ a single atomization method, resulting in poor material dispersion and uneven droplet size. This leads to inconsistent contact areas with hot air, causing localized inadequate or over-drying and making it difficult to guarantee consistent product quality. Furthermore, uneven hot air distribution in some equipment prevents sufficient contact with the droplets, further reducing drying efficiency. Therefore, a high-speed centrifugal spray dryer with uniform spray distribution is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-speed centrifugal spray dryer with uniform spraying, aiming to improve the problem that traditional spray dryers in the prior art mostly use a single atomization method, resulting in poor material dispersion, uneven droplet size, inconsistent contact area with hot air, and easy occurrence of local insufficient drying or over-drying, making it difficult to ensure the consistency of product quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-speed centrifugal spray dryer with uniform spraying, comprising a frame, wherein a liquid tank, a conveying pump, a dryer and a heating component are fixedly connected sequentially from left to right on the top of the frame, a mixing motor is fixedly connected to the top of the liquid tank, a conveying pipe is provided between the input end of the conveying pump and the liquid tank, a conveying pipe is provided between the output end of the conveying pump and the dryer, a filter component is provided on the outer wall of the dryer at the output end of the conveying pump, and a rotary dispersion component is provided inside the dryer;

[0006] The rotary dispersion assembly includes a rotary motor, which is fixedly connected to the bottom of the dryer. The output end of the rotary motor is fixedly connected to a rotating shaft that passes through the bottom of the dryer. A mounting sleeve is fixedly connected to the top of the rotating shaft. Multiple spray pipes are fixedly connected to the outer wall of the mounting sleeve. Multiple atomizing nozzles are fixedly connected to the bottom of the outer wall of the spray pipes. A scraping assembly is provided on the outer wall of the rotating shaft.

[0007] As a further description of the above technical solution:

[0008] The scraping assembly includes multiple mounting rods, which are fixedly connected to the outer wall of the rotating shaft. A limiting plate is slidably connected inside the mounting rod. A spring is fixedly connected to one side of the limiting plate, and a connecting rod is fixedly connected to the other side of the limiting plate. Scrapers are fixedly connected between multiple connecting rods on the same side.

[0009] As a further description of the above technical solution:

[0010] The filtration assembly includes a filter box, which is disposed on the outer wall of the delivery pipe at the output end of the delivery pump. Four positioning plates are fixedly connected to the inner wall of the filter box, and a filter screen is disposed between the four positioning plates. A fixing component is disposed on the inner wall of the filter box.

[0011] As a further description of the above technical solution:

[0012] The fixing component includes a pull rod, the outer wall of which is slidably connected to the inner wall of the filter box, a limit block is fixedly connected to the outer wall of the pull rod, and a spring is sleeved on the outer wall of the pull rod.

[0013] As a further description of the above technical solution:

[0014] The heating assembly includes a fan, which is fixedly connected to the top edge of the frame. A heater is fixedly connected to the input end of the fan, an air filter is fixedly connected to the side of the heater away from the fan, and an exhaust pipe is fixedly connected to the output end of the fan.

[0015] As a further description of the above technical solution:

[0016] A sealing ring is provided at the connection between the conveying pipe and the mounting sleeve, and the side of the scraper away from the connecting rod abuts against the inner wall of the dryer.

[0017] As a further description of the above technical solution:

[0018] The dryer is equipped with a discharge pipe at the bottom, and the pull rod passes through the filter box and engages with the filter screen.

[0019] As a further description of the above technical solution:

[0020] The end of the exhaust pipe furthest from the fan is annular.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this invention, the rotating shaft in the rotating dispersion assembly is driven by a rotating motor to rotate at high speed, which in turn drives the mounting sleeve, spray pipe, and atomizing nozzle to work together. This disperses the liquid material into uniform and fine droplets under centrifugal force, increasing the contact area between the liquid material and the hot air. Simultaneously, the annular port of the exhaust pipe in the heating assembly allows hot air to enter the dryer in a spiral shape, ensuring uniform distribution of hot air. The combination of these two elements achieves rapid and uniform drying of the liquid material, significantly improving drying efficiency and ensuring the consistency of the dried product quality.

[0023] 2. In this invention, when the shaft rotates, the scraping component uses centrifugal force to keep the scraper tightly against the inner wall of the dryer, promptly removing material adhering to the inner wall during the drying process. This prevents material accumulation and blockage of the dryer's internal space, ensuring a smooth drying process. Simultaneously, the scraping component's design prevents material residue from causing a decrease in drying efficiency and equipment corrosion, extending the equipment's service life.

[0024] 3. In this utility model, the filter assembly effectively filters impurities in the liquid material, and the filter screen (8) in the filter box precisely intercepts impurities, preventing them from entering the dryer and clogging the atomizing nozzle, thus avoiding impurities from mixing into the product and affecting its quality. At the same time, the fixing assembly adopts a structure of pull rod and spring working together to realize the quick installation and removal of the filter screen (8). When the filter screen needs to be cleaned or replaced, it can be easily removed by simply pulling the pull rod, making maintenance and operation simple and reducing the difficulty and time cost of equipment maintenance. Attached Figure Description

[0025] Figure 1 This is a perspective view of a high-speed centrifugal spray dryer with uniform spraying proposed in this utility model;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a cross-sectional view of the filter box of a high-speed centrifugal spray dryer with uniform spraying, as proposed in this utility model.

[0028] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0029] Figure 5 This is a cross-sectional view of a high-speed centrifugal spray dryer with uniform spraying, as proposed in this utility model.

[0030] Figure 6 This is a cross-sectional view of the mounting sleeve of a high-speed centrifugal spray dryer with uniform spraying, as proposed in this utility model.

[0031] Figure 7 This is a cross-sectional view of the mounting rod of a high-speed centrifugal spray dryer with uniform spraying, as proposed in this utility model.

[0032] Legend:

[0033] 1. Frame; 2. Material tank; 3. Mixing motor; 4. Conveying pump; 5. Conveying pipe; 6. Filter box; 7. Positioning plate; 8. Filter screen; 9. Limiting block; 10. Spring 1; 11. Dryer; 12. Rotary motor; 13. Rotating shaft; 14. Mounting sleeve; 15. Spray pipe; 16. Atomizing nozzle; 17. Mounting rod; 18. Limiting plate; 19. Spring 2; 20. Connecting rod; 21. Scraper; 22. Fan; 23. Heater; 24. Air filter; 25. Exhaust pipe; 26. Sealing ring; 27. Pull rod. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1-3 This utility model provides an embodiment of a high-speed centrifugal spray dryer with uniform spraying, including a frame 1. The frame 1 supports the entire dryer and other components to ensure stability during drying operations. From left to right, the top of the frame 1 is fixedly connected to a liquid tank 2, a delivery pump 4, a dryer 11, and a heating component. The liquid tank 2 is used to store the liquid, the delivery pump 4 is used to deliver the liquid, the dryer 11 is the main space for drying the liquid, and the heating component is used to deliver hot air into the dryer 11 to achieve the effect of drying the liquid. A mixing motor 3 is fixedly connected to the top of the liquid tank 2. The mixing motor 3 is used to mix the liquid inside the liquid tank 2 after it is powered on, so as to prevent the liquid from settling or solidifying during storage. A conveying pipe 5 is provided between the input end of the conveying pump 4 and the liquid tank 2, and a conveying pipe 5 is provided between the output end of the conveying pump 4 and the dryer 11. By providing the conveying pipe 5, the conveying pump 4 can effectively convey the liquid inside the liquid tank 2 to the dryer 11 for drying after it is started. A filter assembly is provided on the outer wall of the dryer 11 at the output end of the conveying pump 4. The filter assembly filters the conveyed liquid to prevent impurities in the liquid from clogging the atomizing nozzle 16. A rotary dispersion assembly is provided inside the dryer 11. The rotary dispersion assembly is used to atomize the liquid by rotation, increasing the contact area between the liquid and the hot air.

[0036] Reference Figure 5 and Figure 6The rotary dispersion assembly includes a rotary motor 12, which is fixedly connected to the bottom of the dryer 11. The rotary motor 12 is the main driving force of the entire rotary dispersion assembly. The rotary motor 12 rotates after being powered on. A rotating shaft 13, penetrating the bottom of the dryer 11, is fixedly connected to the output end of the rotary motor 12. The rotating shaft 13 rotates under the drive of the rotary motor 12, thus transmitting the rotational power of the rotary motor 12. A mounting sleeve 14 is fixedly connected to the top of the rotating shaft 13. The mounting sleeve 14 provides installation space for the spray pipe 15 and also rotates under the drive of the rotating shaft 13. Furthermore, the mounting sleeve 14 also... The liquid material is stored and transported. Multiple spray pipes 15 are fixedly connected to the outer wall of the mounting sleeve 14. The spray pipes 15 are used to transport the liquid material inside the mounting sleeve 14 to the atomizing nozzle 16 for atomization. Multiple atomizing nozzles 16 are fixedly connected to the bottom of the outer wall of the spray pipe 15. The atomizing nozzle 16 is the main component in the entire atomization process. During the atomization process, the mounting sleeve 14 will rotate to achieve a rotation effect, thereby increasing the contact area between the atomized liquid material and the hot air. A scraping component is provided on the outer wall of the rotating shaft 13. The scraping component is used to scrape the inner wall of the dryer 11 to prevent the dried liquid material from adhering to the inner wall of the dryer 11.

[0037] Reference Figure 7 The scraping assembly includes multiple mounting rods 17, which are fixedly connected to the outer wall of the rotating shaft 13. By fixing the mounting rods 17 to the outer wall of the rotating shaft 13, the rotating shaft 13 will also drive the mounting rods 17 to rotate during rotation. The mounting rods 17 are made of polytetrafluoroethylene (PTFE), and a limiting plate 18 is slidably connected inside each mounting rod 17. The limiting plate 18 is used to limit the connecting rod 20, preventing the connecting rod 20 from excessively sliding out of the mounting rod 17. A second spring 19 is fixedly connected to one side of the limiting plate 18 to provide elastic force. This pushes the limiting plate 18 to slide, and further drives the scraper 21 to slide through the connecting rod 20, so that the scraper 21 can always be in contact with the inner wall of the dryer 11. The connecting rod 20 is fixedly connected to the other side of the limiting plate 18. The connecting rod 20 is used to connect the limiting plate 18 and the scraper 21 and transmit the movement of the limiting plate 18 to the scraper 21. The scraper 21 is fixedly connected between multiple connecting rods 20 on the same side. The scraper 21 is used to scrape the inner wall of the dryer 11 and rotates with the rotation of the mounting rod 17, thereby ensuring scraping efficiency.

[0038] Reference Figure 3The filter assembly includes a filter box 6, which is installed on the outer wall of the delivery pipe 5 at the output end of the delivery pump 4. By installing the filter box 6 on the outer wall of the delivery pipe 5 at the output end of the delivery pump 4, the filter assembly can effectively filter the delivered liquid. Four positioning plates 7 are fixedly connected to the inner wall of the filter box 6. The positioning plates 7 provide positioning and support for the installation of the filter screen 8. The filter screen 8 is arranged between the four positioning plates 7. The diameter of the filter holes of the filter screen 8 is slightly larger than the diameter of the liquid, but smaller than the diameter of the impurities, so that the filter screen 8 can effectively filter the impurities in the liquid. The inner wall of the filter box 6 is provided with a fixing component, which is used to fix the filter screen 8. At the same time, the filter screen 8 can be quickly removed for cleaning after long-term use.

[0039] Reference Figure 4 The fixing component includes a pull rod 27, the outer wall of which is slidably connected to the inner wall of the filter box 6. The pull rod 27 is the main component of the entire fixing component. The pull rod 27 achieves the effect of fixing and releasing the filter screen 8 by engaging with the filter screen 8. A limit block 9 is fixedly connected to the outer wall of the pull rod 27. The limit block 9 is used to limit the pull rod 27 and prevent the pull rod 27 from sliding excessively out of the filter box 6. A spring 10 is sleeved on the outer wall of the pull rod 27. The spring 10 is used to provide elastic force. When there is no external force, it will push the limit block 9 to slide, so that the pull rod 27 can always be engaged with the filter screen 8.

[0040] Reference Figure 1 and Figure 5 The heating assembly includes a fan 22, which is fixedly connected to the top edge of the frame 1. The fan 22 is used to transport external air. A heater 23 is fixedly connected to the input end of the fan 22. The heater 23 is used to heat the transported air. An air filter 24 is fixedly connected to the side of the heater 23 away from the fan 22. The air filter 24 is used to filter the air to prevent impurities in the air from affecting the drying process. An exhaust pipe 25 is fixedly connected to the output end of the fan 22. The exhaust pipe 25 is used to transport the filtered and heated air into the dryer 11.

[0041] Reference Figures 5-7 A sealing ring 26 is provided at the connection between the conveying pipe 5 and the mounting sleeve 14. The sealing ring 26 is used to seal and prevent the material liquid from leaking. The side of the scraper 21 away from the connecting rod 20 abuts against the inner wall of the dryer 11 to ensure that the scraper 21 can always be in contact with the inner wall of the dryer 11 during the rotation process.

[0042] Reference Figure 4 and Figure 5The dryer 11 is equipped with a discharge pipe at the bottom, which is connected to other external components to extract the dried liquid. The pull rod 27 passes through the filter box 6 and engages with the filter screen 8. The engagement fixes the filter screen 8. When the pull rod 27 is released from the filter screen 8, the filter screen 8 can be removed for cleaning.

[0043] Reference Figure 5 The end of the exhaust pipe 25 away from the fan 22 is annular. The annular shape causes the hot air to spiral when it enters the dryer 11, thus better dissolving with the liquid material.

[0044] Working principle: When the liquid material needs to be dried, the mixing motor 3, rotary motor 12, fan 22, and delivery pump 4 are energized. Upon energization, the mixing motor 3 rotates, stirring and mixing the liquid material inside the liquid tank 2. Subsequently, it is drawn by the delivery pump 4 and delivered to the mounting sleeve 14. During this process, it passes through the filter screen 8 inside the filter box 6 for filtration. Once inside the mounting sleeve 14, driven by the rotation of the rotating shaft 13, the mounting sleeve 14 uses centrifugal force to deliver the liquid material to the spray pipe 15, where it is sprayed. The atomizing nozzle 16 at the bottom of the pipe 15 atomizes the liquid. Before this, the fan 22 is started to draw in the air, which is then filtered by the air filter 24 and heated by the heater 23 before being transported into the dryer 11. When the liquid is atomized, it comes into contact with the spiral hot air, thereby achieving the drying effect. The dried liquid is then transported out through the bottom discharge pipe and other components. As the rotating shaft 13 rotates, it also drives the mounting rod 17 to rotate, which in turn drives the scraper 21 to rotate, scraping off the dried liquid from the inner wall of the dryer 11.

[0045] When the filter screen 8 needs cleaning after long-term use, the pull rod 27 is pulled. When the pull rod 27 is pulled, it will cause the limiting block 9 to slide, and at the same time, it will compress the spring 10, causing the spring 10 to store potential energy. After the pull rod 27 disengages from the filter screen 8, the filter screen 8 is taken out and cleaned. Then the pull rod 27 is pulled again, and the cleaned filter screen 8 is put back between the positioning plates 7. Then the pull rod 27 is released. At this time, the external force disappears and pushes the limiting block 9 to slide, which further drives the pull rod 27 to slide, so that the pull rod 27 re-engages with the filter screen 8, thus fixing the filter screen 8.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A high-speed centrifugal spray dryer for uniform spraying, comprising a frame (1), characterized in that: The top of the frame (1) is fixedly connected from left to right to a liquid tank (2), a conveying pump (4), a dryer (11) and a heating component. A mixing motor (3) is fixedly connected to the top of the liquid tank (2). A conveying pipe (5) is provided between the input end of the conveying pump (4) and the liquid tank (2). A conveying pipe (5) is provided between the output end of the conveying pump (4) and the dryer (11). A filter component is provided on the outer wall of the dryer (11) at the output end of the conveying pump (4). A rotary dispersion component is provided inside the dryer (11). The rotary dispersion assembly includes a rotary motor (12), which is fixedly connected to the bottom of the dryer (11). The output end of the rotary motor (12) is fixedly connected to a rotating shaft (13) that passes through the bottom of the dryer (11). The top of the rotating shaft (13) is fixedly connected to an installation sleeve (14). Multiple spray pipes (15) are fixedly connected to the outer wall of the installation sleeve (14). Multiple atomizing nozzles (16) are fixedly connected to the bottom of the outer wall of the spray pipes (15). A scraping assembly is provided on the outer wall of the rotating shaft (13).

2. The high-speed centrifugal spray dryer with uniform spraying as described in claim 1, characterized in that: The scraping assembly includes multiple mounting rods (17), which are fixedly connected to the outer wall of the rotating shaft (13). A limiting plate (18) is slidably connected inside the mounting rod (17). A spring (19) is fixedly connected to one side of the limiting plate (18), and a connecting rod (20) is fixedly connected to the other side of the limiting plate (18). Scrapers (21) are fixedly connected between multiple connecting rods (20) on the same side.

3. The high-speed centrifugal spray dryer with uniform spraying according to claim 2, characterized in that: The filter assembly includes a filter box (6), which is disposed on the outer wall of the delivery pipe (5) at the output end of the delivery pump (4). Four positioning plates (7) are fixedly connected to the inner wall of the filter box (6), and a filter screen (8) is disposed between the four positioning plates (7). A fixing component is disposed on the inner wall of the filter box (6).

4. The high-speed centrifugal spray dryer with uniform spraying according to claim 3, characterized in that: The fixing component includes a pull rod (27), the outer wall of the pull rod (27) is slidably connected to the inner wall of the filter box (6), the outer wall of the pull rod (27) is fixedly connected to a limit block (9), and a spring (10) is sleeved on the outer wall of the pull rod (27).

5. A high-speed centrifugal spray dryer with uniform spraying as described in claim 1, characterized in that: The heating assembly includes a fan (22), which is fixedly connected to the top edge of the frame (1). A heater (23) is fixedly connected to the input end of the fan (22). An air filter (24) is fixedly connected to the side of the heater (23) away from the fan (22). An exhaust pipe (25) is fixedly connected to the output end of the fan (22).

6. A high-speed centrifugal spray dryer with uniform spraying according to claim 3, characterized in that: A sealing ring (26) is provided at the connection between the conveying pipe (5) and the mounting sleeve (14), and the scraper (21) on the side away from the connecting rod (20) abuts against the inner wall of the dryer (11).

7. A high-speed centrifugal spray dryer with uniform spraying as described in claim 4, characterized in that: The dryer (11) is provided with a discharge pipe at the bottom, and the pull rod (27) passes through the filter box (6) and engages with the filter screen (8).

8. A high-speed centrifugal spray dryer with uniform spraying as described in claim 5, characterized in that: The end of the exhaust pipe (25) away from the fan (22) is annular.

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