Centrifugal spray dryer capable of preventing materials from adhering to wall

Abstract

The invention provides a centrifugal spray dryer capable of preventing materials from adhering to the wall, and relates to the field of centrifugal spray drying, a medicine or food solution can be sprayed into a drying chamber, dried powder is extremely fine, the particle size is uniform, and the centrifugal spray dryer is commonly used for drying treatment of traditional Chinese medicine preparations, antibiotic powder injections, solid dispersions, clathrates and microcapsule powder in the field of pharmacy. The centrifugal spray dryer capable of preventing the materials from adhering to the wall comprises a first drying cylinder, a second drying cylinder and a collecting cylinder, a storage bin is formed in the top end of the interior of the first drying cylinder, a conical discharging pipe is arranged at the bottom end of the storage bin, and the conical discharging pipe is filled with a conical sealing plug. Through rotation of an adjusting screw rod, the adjusting screw rod is in threaded fit with a threaded frame after rotation, threaded movement can be achieved, adjustment of the distance between a conical sealing plug and a conical discharging pipe is completed, and therefore material liquid can permeate into the first drying box, the liquid makes contact with high-temperature gas in the circulation process, and the rapid drying effect can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal spray drying, in particular to a centrifugal spray drying machine capable of preventing materials from sticking to the wall. Background Art

[0002] Spray drying is a method of applying systematic technology to the drying of materials such as medicines or foods. After the material is atomized in a liquid state in a drying chamber, the water quickly vaporizes when in contact with hot air, and a dry solid product is obtained. This method can directly dry material solutions, emulsions, suspensions, and emulsions into powder or granular products due to its large evaporation area, very short drying time (several seconds to tens of seconds), and low drying temperature (generally around 50°C), eliminating the evaporation, crushing and other processes.

[0003] The spray dryer in the prior art can quickly dry the material during use, but there are still several defects in use. First, the traditional dryer will cause the material to stick to the wall during the drying process. Due to the large number of internal structures of the equipment, it is not easy to clean, resulting in reduced product yield and waste of material resources. At the same time, after pouring the material into the dryer, it is necessary to wait for the material to be dried before the next batch of operations can be carried out. There are limitations in use, the drying efficiency cannot be improved, and the use is inconvenient. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a centrifugal spray dryer that prevents materials from sticking to the wall, which solves the problem that after materials are dumped into the dryer, one needs to wait for the materials to be dried before proceeding with the next batch of operations. The dryer has limitations when used, but can significantly improve the yield of the product, reduce material resource waste, save costs, increase corporate profits, and has considerable economic and social value.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a centrifugal spray dryer for preventing materials from sticking to the wall, comprising a first drying cylinder, a second drying cylinder and a collecting cylinder, a storage bin is provided at the top of the interior of the first drying cylinder, a conical discharge pipe is provided at the bottom of the storage bin, and a conical sealing plug is filled inside the conical discharge pipe, a centrifugal filter is rotatably connected to the middle of the interior of the first drying cylinder, scrapers are fixedly connected to both sides of the centrifugal filter, a heating box is fixedly connected to the bottom end of one side of the first drying cylinder, a partition is fixedly connected to the middle of the heating box, a second motor is fixedly connected to the bottom end of the partition, a pulley is fixedly connected to the driving end of the second motor and the bottom end of the centrifugal filter, a belt body is sleeved on the outside of the pulley, and the bottom end pulley of the centrifugal filter rotates in coordination with the inner wall of the first drying cylinder;

[0008] A spherical discharge pipe is fixedly connected to the side of the first drying cylinder away from the heating box, a first motor is fixedly connected to the outside of the spherical discharge pipe, an inclined pipe is fixedly connected to the bottom end of the spherical discharge pipe, an end of the inclined pipe away from the spherical discharge pipe is fixedly connected to the second drying cylinder, a driving shaft is rotatably connected to the inside of the spherical discharge pipe, a driving end of the first motor is fixedly connected to the driving shaft, and a plurality of flip plates are fixedly connected to the outside of the driving shaft;

[0009] An air nozzle is fixedly connected to the inner bottom end of the second drying cylinder, a fixed filter screen is arranged on the top end of the air nozzle, and the fixed filter screen is fixedly connected to the inner wall of the second drying cylinder.

[0010] Preferably, an air outlet filter is provided at the inner bottom end of the first drying cylinder, four supporting springs are fixedly connected to the bottom end of the air outlet filter, a protrusion is fixedly connected to the bottom end of the supporting spring, and the protrusion is fixedly connected to the inner wall of the first drying cylinder.

[0011] Preferably, a servo motor is fixedly connected to one side of the inner bottom end of the first drying cylinder, a turntable is fixedly connected to the driving end of the servo motor, a knocking block is fixedly connected to one side of the turntable, and the knocking block and the air outlet filter are in abutment with each other.

[0012] Preferably, the top end of the air outlet filter is fixedly connected with an inclined net, and the inclined end of the inclined net is located on one side of the spherical discharge pipe.

[0013] Preferably, a wind pump box is fixedly connected to the bottom end of one side of the second drying cylinder, a flow pipe is fixedly connected to the input end of the wind pump box, the flow pipe and the heating box are fixedly connected, an arc-shaped guide groove is opened at the top inner end of the second drying cylinder, and a fixed filter is fixedly connected to the bottom inner end of the second drying cylinder.

[0014] Preferably, a steam pipe is fixedly connected to the upper side of the first drying cylinder, a blocking filter is fixedly connected between the steam pipe and the first drying cylinder, and a fan is fixedly connected to the top of the heating box.

[0015] Preferably, a connecting pipe is fixedly connected to the top of one side of the second drying cylinder, the end of the connecting pipe is fixedly connected to the collecting cylinder, and one side of the top of the collecting cylinder is fixedly connected to an exhaust pipe.

[0016] Preferably, air circulation pipes are fixedly connected on both sides between the heating box and the first drying cylinder, a heating wire is fixedly connected to the upper interior of the heating box, a feed hopper is fixedly connected to the top of the first drying cylinder, a threaded rack is fixedly connected to the interior of the feed hopper, an adjusting screw is threadedly connected to the interior of the threaded rack, and the bottom end of the adjusting screw is fixedly connected to a conical sealing plug.

[0017] (III) Beneficial effects

[0018] The present invention provides a centrifugal spray dryer that prevents materials from sticking to the wall. It has the following beneficial effects:

[0019] 1. The present invention is provided with: an adjusting screw, a threaded frame, a conical sealing plug and a conical discharge pipe. The adjusting screw is rotated and threadedly matched with the threaded frame after rotation to realize thread movement, and the conical sealing plug is adjusted to complete the spacing adjustment with the conical discharge pipe. Therefore, the feed liquid can penetrate into the interior of the first drying box. During the circulation process, the liquid contacts with the high-temperature gas and can be dried quickly. By adjusting the conical sealing plug, the discharge amount can be controlled to achieve uniform discharge speed, and the drying process can be completed continuously, reducing the need for traditional equipment to wait for drying before the next batch of operations.

[0020] 2. The present invention is provided with: an inclined screen, a second motor, a centrifugal filter, a scraper and a first drying cylinder. The inclined screen can flow toward the inclined end. When the liquid is drying, the driving end of the second motor drives the belt body to rotate, and the rotation can drive the centrifugal filter. Then, the scraper can be used to scrape off the material attached to the inner wall of the first drying cylinder to prevent the problem of sticking to the wall.

[0021] 3. The present invention is provided with: an air pump box, a circulation pipe, a second drying cylinder and an air nozzle. The air pump box guides the internal heat of the heating box through the circulation pipe into the interior of the second drying cylinder again. Through the setting of the air nozzle, the hot air can be blown upward to blow and circulate the material again. The material blown again will circulate upward after drying. Through this structure, the material can be dried again to improve the drying effect.

[0022] 4. The present invention is provided with: an arc-shaped guide groove, a collection tube and an exhaust pipe. The arc-shaped guide groove guides the flow to the interior of the collection tube, the gas is discharged through the exhaust pipe, and the material is collected inside the collection tube by gravity, which is convenient for unified treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional structural diagram of a centrifugal spray dryer for preventing materials from sticking to the wall proposed by the present invention;

[0024] Figure 2 A cross-sectional front view of a centrifugal spray dryer for preventing materials from sticking to the wall proposed by the present invention;

[0025] Figure 3 A top view of a centrifugal spray dryer for preventing materials from sticking to the wall proposed by the present invention;

[0026] Figure 4 The present invention proposes Figure 2 A in the enlarged view;

[0027] Figure 5 The present invention proposes Figure 2 The enlarged view of point B in the figure;

[0028] Figure 6 The present invention is a front view of a spherical discharge pipe section of a centrifugal spray dryer for preventing materials from sticking to the wall.

[0029] Among them, 1. the first drying cylinder; 2. the steam pipe; 3. the fan; 4. the heating box; 5. the circulation pipe; 6. the air pump box; 7. the second drying cylinder; 8. the collecting cylinder; 9. the first motor; 10. the adjusting screw; 11. the feed hopper; 12. the storage bin; 13. the conical sealing plug; 14. the centrifugal filter; 15. the conical discharge pipe; 16. the scraper; 17. the exhaust pipe; 18. the fixed filter; 19. the air nozzle; 20. the spherical discharge pipe; 21. the threaded rack; 22. the support spring; 23. the knocking block; 24. the turntable; 25. the pulley; 26. the air outlet filter; 27. the inclined net; 28. the heating wire; 29. ​​the second motor; 30. the circulation pipe; 31. the inclined pipe; 32. the driving shaft; 33. the flip plate; 34. the arc guide groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example:

[0032] like Figure 1-6 As shown, the embodiment of the present invention provides a centrifugal spray dryer for preventing materials from sticking to the wall, including a first drying cylinder 1, a second drying cylinder 7 and a collecting cylinder 8. A storage bin 12 is provided at the top of the first drying cylinder 1, and a conical discharge pipe 15 is provided at the bottom of the storage bin 12. The conical discharge pipe 15 is filled with a conical sealing plug 13. A centrifugal filter screen 14 is rotatably connected to the middle of the first drying cylinder 1. The feed liquid can penetrate into the interior of the first drying box 1 and fall into the interior of the centrifugal filter screen 14. The feed liquid contacts with the high-temperature gas and can be dried quickly. Scrapers 16 are fixedly connected to both sides of the centrifugal filter screen 14. The scrapers 16 are used to move the feed liquid to the first drying box 1. The material attached to the inner wall of the drying cylinder 1 is scraped off to prevent the problem of sticking to the wall. A heating box 4 is fixedly connected to the bottom end of one side of the first drying cylinder 1, and a partition is fixedly connected to the middle of the heating box 4. The bottom end of the partition is fixedly connected to a second motor 29. Through the setting of the inclined net 27, it can flow to the inclined end. When the material liquid is in the drying process, the driving end of the second motor 29 drives the belt body to rotate, and after the rotation, the centrifugal filter 14 can be rotated. The driving end of the second motor 29 and the bottom end of the centrifugal filter 14 are fixedly connected with a pulley 25. The outer sleeve of the pulley 25 is provided with a belt body. The bottom end pulley 25 of the centrifugal filter 14 and the inner wall of the first drying cylinder 1 are rotated in coordination;

[0033] A spherical discharge pipe 20 is fixedly connected to the side of the first drying cylinder 1 away from the heating box 4, and the material will fall into the inside of the spherical discharge pipe 20. At this time, the driving shaft 32 will be driven to rotate by the first motor 9. After rotation, the material on one side of the spherical discharge pipe 20 will be scraped by the flip plate 33 to flow to one end of the inclined tube 31 to improve the circulation efficiency. The outside of the spherical discharge pipe 20 is fixedly connected to the first motor 9, and the bottom end of the spherical discharge pipe 20 is fixedly connected to the inclined tube 31. The end of the inclined tube 31 away from the spherical discharge pipe 20 is fixedly connected to the second drying cylinder 7. The inside of the spherical discharge pipe 20 is rotatably connected to the driving shaft 32. The driving end of the first motor 9 is fixedly connected to the driving shaft 32, and a plurality of flip plates 33 are fixedly connected to the outside of the driving shaft 32. The bottom end of one side of the second drying cylinder 7 is fixedly connected to the wind pump box 6. The pump box 6 guides the internal heat of the heating box 4 again through the circulation pipe 5 into the interior of the second drying cylinder 7. Through the setting of the air nozzle 19, the hot steam can be blown upward to blow and circulate the material again. The input end of the air pump box 6 is fixedly connected with the circulation pipe 5, and the circulation pipe 5 and the heating box 4 are fixedly connected. The top of the interior of the second drying cylinder 7 is provided with an arc guide groove 34, and the circulation is guided to the interior of the collecting cylinder 8 through the arc guide groove 34. The bottom end of the interior of the second drying cylinder 7 is fixedly connected with a fixed filter screen 18, and the top of one side of the second drying cylinder 7 is fixedly connected with a connecting pipe, and the end of the connecting pipe is fixedly connected with the collecting cylinder 8. The top side of the collecting cylinder 8 is fixedly connected with an exhaust pipe 17, and the gas is discharged through the exhaust pipe 17, and the material is collected in the interior of the collecting cylinder 8 by gravity, which is convenient for unified treatment.

[0034] The inner bottom end of the second drying cylinder 7 is fixedly connected with an air nozzle 19, and the top of the air nozzle 19 is provided with a fixed filter screen 18, and the fixed filter screen 18 is fixedly connected to the inner wall of the second drying cylinder 7. The inner bottom end of the first drying cylinder 1 is provided with an air outlet filter screen 26, and the bottom end of the air outlet filter screen 26 is fixedly connected with four supporting springs 22, and the bottom end of the supporting spring 22 is fixedly connected with a protrusion, and the protrusion is fixedly connected to the inner wall of the first drying cylinder 1. A servo motor is fixedly connected to one side of the inner bottom end of the first drying cylinder 1, and a rotating disk 24 is fixedly connected to the driving end of the servo motor. When the drying cylinder 1 is When the final material is above the inclined net 27, the servo motor drives the turntable 24 to rotate, and after rotation, the air outlet filter 26 is knocked by the knocking block 23. A knocking block 23 is fixedly connected to one side of the turntable 24, and the knocking block 23 and the air outlet filter 26 are in contact with each other. The top of the air outlet filter 26 is fixedly connected to the inclined net 27, and the inclined end of the inclined net 27 is on one side of the spherical discharge pipe 20. A steam pipe 2 is fixedly connected to the upper side of one side of the first drying cylinder 1, and a blocking filter is fixedly connected between the steam pipe 2 and the first drying cylinder 1. A fan 3 is fixedly connected to the top of the heating box 4.

[0035] The heating box 4 and the first drying cylinder 1 are both fixedly connected with a circulation air pipe 30 on both sides. The circulation air pipe 30 flows into the interior of the first drying cylinder 1. Since the hot steam flows upward and can be discharged through the steam pipe 2, a heating wire 28 is fixedly connected to the upper part of the interior of the heating box 4. Through the heating of the heating wire 28, the fan 3 introduces external air and circulates it into the interior of the heating box 4. The top of the first drying cylinder 1 is fixedly connected with a feed hopper 11. By pouring the feed liquid into the interior of the feed hopper 11, the conical sealing plug 13 and the conical discharge pipe 15 are plugged in. The liquid feed can be stored in the storage box 12. The feed hopper 11 is fixedly connected to a threaded rack 21. The threaded rack 21 is internally threadedly connected to an adjusting screw 10. After the interior of the first drying cylinder 1 is heated up, the operator can adjust the screw 10 by rotating it. After rotation, the screw 10 is threadedly matched with the threaded rack 21 to achieve thread movement. The distance between the conical sealing plug 13 and the conical discharge pipe 15 is adjusted. Therefore, the liquid feed can penetrate into the interior of the first drying box 1. The bottom end of the adjusting screw 10 is fixedly connected to the conical sealing plug 13.

[0036] Working principle: When in use, first pour the liquid into the feed hopper 11. Due to the plug-in effect of the conical sealing plug 13 and the conical discharge pipe 15, the pipe mouth is blocked, and the liquid can be stored in the storage box 12. Then, through the heating of the heating wire 28, the fan 3 introduces external air and circulates it into the heating box 4, and then flows into the first drying cylinder 1 through the circulation air pipe 30. Since the hot steam flows upward and can be discharged through the steam pipe 2, when the interior of the first drying cylinder 1 is heated, the staff can adjust the rotation of the screw 10, and after rotation, it is threadedly matched with the threaded frame 21, that is, The thread can be moved to adjust the distance between the conical sealing plug 13 and the conical discharge pipe 15, so that the liquid can penetrate into the interior of the first drying box 1 and fall into the interior of the centrifugal filter 14. The liquid contacts the high-temperature gas and can be dried quickly. The steam will be discharged together with the gas through the steam pipe 2. The dried material falls downward by gravity. Since the density of the dried powder is smaller than the mesh of the centrifugal filter 14, the powder will penetrate downward and fall, and can flow to the inclined end through the setting of the inclined net 27. When the liquid is in the drying process, the driving end of the second motor 29 drives the belt body to rotate. After the rotation, The centrifugal filter 14 can be rotated to centrifugally throw out the liquid to complete the drying operation, and then the scraper 16 can be used to scrape off the material attached to the inner wall of the first drying cylinder 1 to prevent the problem of sticking to the wall; when the dried material is above the inclined screen 27, the servo motor drives the rotation of the turntable 24, and after rotation, the knocking block 23 knocks the air outlet filter 26, and the material will fall into the inside of the spherical discharge pipe 20. At this time, the first motor 9 will drive the rotation of the drive shaft 32. After rotation, the flip plate 33 will scrape the material on one side of the spherical discharge pipe 20 to flow to one end of the inclined pipe 31, thereby improving the circulation efficiency. The material will be discharged into the interior of the second drying cylinder 7. Since the first drying cylinder 1 cannot directly dry the material, the wind pump box 6 will guide the internal heat of the heating box 4 through the circulation pipe 5 into the interior of the second drying cylinder 7. Through the setting of the air nozzle 19, the hot steam can be blown upward to blow and circulate the material again. The material blown again will flow upward after drying, and the remaining moisture will fall downward until it is dried and can be guided to flow into the interior of the collecting cylinder 8 through the arc guide groove 34. The gas is discharged through the exhaust pipe 17, and the material will be collected in the interior of the collecting cylinder 8 by gravity, which is convenient for unified treatment.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal spray dryer for preventing materials from sticking to the wall, comprising a first drying cylinder (1), a second drying cylinder (7) and a collecting cylinder (8), characterized in that: A storage bin (12) is provided at the top end of the first drying cylinder (1), a conical discharge pipe (15) is provided at the bottom end of the storage bin (12), and a conical sealing plug (13) is filled inside the conical discharge pipe (15). A centrifugal filter (14) is rotatably connected to the middle of the first drying cylinder (1), and scrapers (16) are fixedly connected to both sides of the centrifugal filter (14). A heating box (4) is fixedly connected to the bottom end of one side of the first drying cylinder (1), and a partition is fixedly connected to the middle of the heating box (4), and a second motor (29) is fixedly connected to the bottom end of the partition. A pulley (25) is fixedly connected to the driving end of the second motor (29) and the bottom end of the centrifugal filter (14), and a belt body is sleeved on the outside of the pulley (25). The bottom pulley (25) of the centrifugal filter (14) and the inner wall of the first drying cylinder (1) are rotatably matched. A spherical discharge pipe (20) is fixedly connected to the side of the first drying cylinder (1) away from the heating box (4), a first motor (9) is fixedly connected to the outside of the spherical discharge pipe (20), an inclined tube (31) is fixedly connected to the bottom end of the spherical discharge pipe (20), an end of the inclined tube (31) away from the spherical discharge pipe (20) is fixedly connected to the second drying cylinder (7), a driving shaft (32) is rotatably connected inside the spherical discharge pipe (20), a driving end of the first motor (9) is fixedly connected to the driving shaft (32), and a plurality of flip plates (33) are fixedly connected to the outside of the driving shaft (32); The inner bottom end of the second drying cylinder (7) is fixedly connected with an air nozzle (19), the top end of the air nozzle (19) is provided with a fixed filter screen (18), and the fixed filter screen (18) is fixedly connected to the inner wall of the second drying cylinder (7).

2. A centrifugal spray dryer for preventing materials from sticking to the wall according to claim 1, characterized in that: An air outlet filter (26) is provided at the inner bottom end of the first drying cylinder (1), and four support springs (22) are fixedly connected to the bottom end of the air outlet filter (26), and a protrusion is fixedly connected to the bottom end of the support spring (22), and the protrusion is fixedly connected to the inner wall of the first drying cylinder (1).

3. A centrifugal spray dryer for preventing materials from sticking to the wall according to claim 1, characterized in that: A servo motor is fixedly connected to one side of the inner bottom end of the first drying cylinder (1); a rotating disk (24) is fixedly connected to the driving end of the servo motor; a knocking block (23) is fixedly connected to one side of the rotating disk (24); and the knocking block (23) and the air outlet filter (26) are in abutment with each other.

4. A centrifugal spray dryer for preventing materials from sticking to the wall according to claim 2, characterized in that: The top end of the air outlet filter (26) is fixedly connected to an inclined screen (27), and the inclined end of the inclined screen (27) is located on one side of the spherical discharge pipe (20).

5. A centrifugal spray dryer for preventing materials from sticking to the wall according to claim 1, characterized in that: The bottom end of one side of the second drying cylinder (7) is fixedly connected to a wind pump box (6), the input end of the wind pump box (6) is fixedly connected to a circulation pipe (5), the circulation pipe (5) and the heating box (4) are fixedly connected, an arc-shaped guide groove (34) is provided at the top end of the interior of the second drying cylinder (7), and a fixed filter screen (18) is fixedly connected to the bottom end of the interior of the second drying cylinder (7).

6. A centrifugal spray dryer for preventing materials from sticking to the wall according to claim 1, characterized in that: A steam pipe (2) is fixedly connected to the upper side of one side of the first drying cylinder (1), a blocking filter is fixedly connected between the steam pipe (2) and the first drying cylinder (1), and a fan (3) is fixedly connected to the top of the heating box (4).

7. A centrifugal spray dryer for preventing materials from sticking to the wall according to claim 1, characterized in that: A connecting pipe is fixedly connected to the top of one side of the second drying cylinder (7), the end of the connecting pipe is fixedly connected to the collecting cylinder (8), and one side of the top of the collecting cylinder (8) is fixedly connected to an exhaust pipe (17).

8. A centrifugal spray dryer for preventing materials from sticking to the wall according to claim 1, characterized in that: Air circulation pipes (30) are fixedly connected on both sides between the heating box (4) and the first drying cylinder (1); a heating wire (28) is fixedly connected to the upper part of the interior of the heating box (4); a feed hopper (11) is fixedly connected to the top of the first drying cylinder (1); a threaded frame (21) is fixedly connected to the interior of the feed hopper (11); an adjusting screw (10) is threadedly connected to the interior of the threaded frame (21); and the bottom end of the adjusting screw (10) is fixedly connected to a conical sealing plug (13).

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