Anti-blocking spray dryer

Abstract

The utility model relates to the technical field of spray dryers, in particular to an anti-blocking spray dryer which is characterized in that a box body is fixedly arranged in a transfer tank, a first rotating shaft is vertically and rotatably arranged in the box body, a crushing rod is arranged at the top end of the first rotating shaft, and a first driven bevel gear block is arranged at the bottom end of the first rotating shaft; a first motor is arranged on one side of the transfer tank, a first driving bevel gear block meshed with the first driven bevel gear block is arranged at the output end of the first motor, a crushing rod is arranged in the transfer tank to crush slurry, and a filter plate is arranged at a feeding pipe to filter materials, so that large materials are prevented from entering a centrifugal spray head through double guarantee, and the centrifugal spray head is prevented from being damaged. The problem that the spraying stability of the centrifugal spray head is affected due to material blockage is effectively avoided, and the reliability and continuity of equipment operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of spray dryer technology, specifically to an anti-clogging spray dryer. Background Technology

[0002] Spray drying is a drying method that uses an atomizer to spray solutions, emulsions, suspensions, or pastes into extremely fine droplets. These droplets rapidly vaporize in the drying medium, forming powdery or granular dried products.

[0003] When existing spray dryers are in use, the slurry contains large pieces of material. Since the slurry lacks a crushing mechanism during transportation, large pieces of material can easily enter the centrifugal nozzle and cause blockage, which will affect the stability of the material during spraying. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides a spray dryer that prevents clogging.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a spray dryer with anti-clogging function, comprising a dryer body, a top cover at the top of the dryer body, a centrifugal nozzle in the middle of the top cover, a feed pipe at the feed end of the centrifugal nozzle, a top shell at the top of the feed pipe, a transfer tank above the top cover, a transfer pipe at the bottom of the transfer tank, a bottom shell at the bottom of the transfer pipe that cooperates with the top shell, the bottom shell being fixed to the upper end of the top shell, and a filter plate between the top shell and the bottom shell;

[0008] The transfer tank has a fixed housing inside, and a first rotating shaft is vertically rotatable inside the housing. The top of the first rotating shaft is provided with a crushing rod, and the bottom of the first rotating shaft is provided with a first driven bevel gear block. A first motor is provided on one side of the transfer tank, and the output end of the first motor is provided with a first driving bevel gear block that meshes with the first driven bevel gear block.

[0009] After the first motor starts, it can make the crushing rod rotate inside the transfer tank, which can provide a crushing effect on the slurry conveyed in the transfer tank. The crushed slurry enters the centrifugal nozzle on the top cover through the transfer pipe and the feed pipe.

[0010] To improve the stability of this structure during spraying, the following improvements are made: two side blocks are symmetrically arranged on the outer wall of the bottom shell; a U-shaped box is provided at the upper end of the top cover; a second motor is provided in the middle part of the U-shaped box; a second rotating shaft is vertically rotatably arranged at both ends of the U-shaped box; a screw penetrating the side block is provided at the top end of the second rotating shaft, and the two screws have a reverse thread structure; a fourth driven bevel gear block is provided at the bottom end of the second rotating shaft; a third rotating shaft and a fourth rotating shaft are horizontally rotatably arranged inside the U-shaped box, and two fourth rotating shafts are respectively located at both ends of the third rotating shaft; a third driving bevel gear block is provided at both ends of the third rotating shaft; a second driven bevel gear block is provided in the middle part of the third rotating shaft; a second driving bevel gear block meshing with the second driven bevel gear block is provided at the output end of the second motor; a third driven bevel gear block meshing with the third driving bevel gear block is provided at one end of the fourth rotating shaft; and a fourth driving bevel gear block meshing with the fourth driven bevel gear block is provided at the other end of the fourth rotating shaft.

[0011] The crushed slurry will be filtered by the filter plate, which can further prevent large pieces of slurry from entering the centrifugal nozzle;

[0012] Start the second motor to rotate the two second shafts. Through the action of the threaded structure, the bottom shell can drive the transfer tank to rise, making it easy to disassemble and clean the filter plate between the top shell and the bottom shell.

[0013] Furthermore, an improvement of this utility model is that both the first motor and the second motor are servo motors.

[0014] Furthermore, an improvement of this utility model is that a sealing ring is provided between the top shell and the bottom shell, and the sealing ring is made of rubber.

[0015] Furthermore, the improvements of this utility model include that the adapter pipe and the bottom shell are an integral structure, and the feed pipe and the top shell are an integral structure.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an anti-clogging spray dryer, which has the following beneficial effects:

[0018] Effectively prevents nozzle clogging: By installing a crushing rod in the transfer tank to break up the slurry and a filter plate at the feed pipe to filter the material, double protection is provided to prevent large pieces of material from entering the centrifugal nozzle. This effectively avoids the problem of the centrifugal nozzle being affected by material blockage, thus improving the reliability and continuity of equipment operation.

[0019] Improved product quality: Materials that have undergone crushing and filtration can be more evenly dispersed and dried during spray drying, resulting in more stable quality and more uniform particle size distribution in the final powdered or granular dried products, thus improving product quality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This utility model Figure 1 Side view;

[0022] Figure 3 This is a schematic diagram of the installation structure of the crushing rod in this utility model;

[0023] Figure 4 This is a schematic diagram of the mating structure between the first driving bevel gear block and the first driven bevel gear block in this utility model.

[0024] Figure 5 This is a schematic diagram of the cooperation structure between the second driving bevel gear block and the second driven bevel gear block in this utility model;

[0025] In the diagram: 1. Dryer body; 2. Top cover; 3. Feed pipe; 4. Top shell; 5. Transfer tank; 6. Transfer pipe; 7. Bottom shell; 8. Filter plate; 9. First motor; 10. Box body; 11. First rotating shaft; 12. Crushing rod; 13. First driven bevel gear block; 14. First driving bevel gear block; 15. U-shaped box; 16. Second rotating shaft; 17. Side block; 18. Screw; 19. Third driven bevel gear block; 20. Third rotating shaft; 21. Third driving bevel gear block; 22. Second motor; 23. Second driving bevel gear block; 24. Second driven bevel gear block; 25. Fourth driving bevel gear block; 26. Fourth driven bevel gear block; 27. Fourth rotating shaft. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 This utility model discloses an anti-clogging spray dryer, comprising a dryer body 1, a top cover 2 at the top of the dryer body 1, a centrifugal nozzle in the middle part of the top cover 2, a feed pipe 3 at the feed end of the centrifugal nozzle, a top shell 4 at the top of the feed pipe 3, a transfer tank 5 above the top cover 2, a transfer pipe 6 at the bottom of the transfer tank 5, a bottom shell 7 at the bottom of the transfer pipe 6 that mates with the top shell 4, the bottom shell 7 being fixed to the upper end of the top shell 4, and a filter plate 8 being provided between the top shell 4 and the bottom shell 7.

[0028] The adapter tank 5 has a fixed housing 10 inside, and a first rotating shaft 11 is vertically rotatable inside the housing 10. The top end of the first rotating shaft 11 is provided with a crushing rod 12, and the bottom end of the first rotating shaft 11 is provided with a first driven bevel gear block 13. A first motor 9 is provided on one side of the adapter tank 5, and the output end of the first motor 9 is provided with a first driving bevel gear block 14 that meshes with the first driven bevel gear block 13.

[0029] To improve the stability of this structure during spraying, the following improvements are made: two side blocks 17 are symmetrically arranged on the outer wall of the bottom shell 7; a U-shaped box 15 is provided at the upper end of the top cover 2; a second motor 22 is provided in the middle part of the U-shaped box 15; a second rotating shaft 16 is vertically rotatably arranged at both ends of the U-shaped box 15; a screw 18 penetrating the side block 17 is provided at the top end of the second rotating shaft 16, and the two screws 18 have a reverse thread structure; a fourth driven bevel gear block 26 is provided at the bottom end of the second rotating shaft 16; and a third rotating shaft 20 is horizontally rotatably arranged inside the U-shaped box 15. And a fourth rotating shaft 27, and the two fourth rotating shafts 27 are respectively located at both ends of the third rotating shaft 20. The two ends of the third rotating shaft 20 are provided with third drive bevel gear blocks 21, the middle part of the third rotating shaft 20 is provided with a second driven bevel gear block 24, the output end of the second motor 22 is provided with a second drive bevel gear block 23 that meshes with the second driven bevel gear block 24, one end of the fourth rotating shaft 27 is provided with a third driven bevel gear block 19 that meshes with the third drive bevel gear block 21, and the other end of the fourth rotating shaft 27 is provided with a fourth drive bevel gear block 25 that meshes with the fourth driven bevel gear block 26.

[0030] In this embodiment, both the first motor 9 and the second motor 22 are servo motors.

[0031] In this embodiment, the transfer pipe 6 and the bottom shell 7 are an integral structure, and the feed pipe 3 and the top shell 4 are an integral structure.

[0032] Material crushing principle: The transfer tank 5 contains a housing 10, within which a first rotating shaft 11 can rotate vertically. A crushing rod 12 is mounted at the top of the first rotating shaft 11, and a first driven bevel gear block 13 is connected to the bottom. A first motor 9 on one side of the transfer tank 5 has a first driving bevel gear block 14 at its output end that meshes with the first driven bevel gear block 13. When the first motor 9 starts, the first driving bevel gear block 14 rotates, driving the first driven bevel gear block 13 and the first rotating shaft 11 to rotate, thereby causing the crushing rod 12 to rotate at high speed within the transfer tank 5. The slurry entering the transfer tank 5 is subjected to the mechanical crushing action of the crushing rod 12, breaking large pieces of material into smaller pieces, reducing the particle size for subsequent processing.

[0033] Material filtration principle: The transfer pipe 6 at the bottom of the transfer tank 5 is connected to the bottom shell 7, which is fixed to the top shell 4. A filter plate 8 is installed between the top shell 4 and the bottom shell 7. The crushed slurry flows in through the transfer pipe 6, is filtered by the filter plate 8, and then enters the centrifugal nozzle through the feed pipe 3. The filter plate 8 can intercept larger particles that are not completely crushed, preventing them from entering the centrifugal nozzle and thus avoiding clogging of the centrifugal nozzle due to excessively large particles, ensuring the stability of the spray drying process.

[0034] Filter plate 8 cleaning principle: Two side blocks 17 are symmetrically arranged on the outer wall of the bottom shell 7. A second motor 22 is installed in the U-shaped box 15 above the top cover 2. The second rotating shafts 16 at both ends of the U-shaped box 15 can rotate vertically. The screws 18 at the top of the second rotating shafts 16 pass through the side blocks 17, and the two screws 18 have a reverse thread structure. A third rotating shaft 20 and a fourth rotating shaft 27 are horizontally arranged inside the U-shaped box 15. The third driving bevel gear blocks 21 at both ends of the third rotating shaft 20 mesh with the third driven bevel gear block 19 at one end of the fourth rotating shaft 27. The second driven bevel gear block 24 in the middle of the third rotating shaft 20 meshes with the second driving bevel gear block 23 at the output end of the second motor 22. The fourth driving bevel gear block 25 at the other end of the fourth rotating shaft 27 meshes with the fourth driven bevel gear block 26 at the bottom end of the second rotating shaft 16. When the second motor 22 starts, the power is transmitted sequentially to the third rotating shaft 20 through the second drive bevel gear block 23 and the second driven bevel gear block 24, and then to the fourth rotating shaft 27 through the third drive bevel gear block 21. Finally, the power drives the second rotating shaft 16 to rotate through the fourth drive bevel gear block 25. Since the two screws 18 have a reverse thread structure, when the second rotating shaft 16 rotates, it will cause the bottom shell 7 to move the transfer tank 5 up or down, which makes it easy to remove the filter plate 8 from between the top shell 4 and the bottom shell 7 for cleaning, thus maintaining the filtration effect of the filter plate 8.

[0035] In this embodiment, a sealing ring is provided between the top shell 4 and the bottom shell 7, and the sealing ring is a rubber ring.

[0036] Sealing principle: A sealing ring made of rubber is installed between the top shell 4 and the bottom shell 7. The rubber ring has good elasticity and sealing performance, which can fill the gap between the top shell 4 and the bottom shell 7, prevent the slurry from leaking during the transfer process, and ensure the sealing and stability of the material transmission inside the equipment.

[0037] Prepare the slurry to be processed and connect it to the feed pipe of the transfer tank 5.

[0038] Start the first motor 9, and adjust the rotation speed of the crushing rod 12 by controlling the speed of the first motor 9 (servo motor) according to the properties of the slurry and the actual production needs, so as to crush the slurry entering the transfer tank 5.

[0039] After being crushed in the transfer tank 5, the slurry flows in through the transfer pipe 6, is filtered by the filter plate 8, and then enters the centrifugal nozzle through the feed pipe 3.

[0040] At the centrifugal nozzle, the treated slurry is sprayed into extremely fine mist droplets, which come into contact with the drying medium inside the dryer body 1 and rapidly vaporize to form powdery or granular dried products.

[0041] When the filter plate 8 needs to be cleaned, the second motor 22 is started. According to the installation position of the filter plate 8, the second motor 22 (servo motor) is controlled to rotate forward and backward, so that the bottom shell 7 drives the transfer tank 5 to rise or fall, and the filter plate 8 is taken out from between the top shell 4 and the bottom shell 7.

[0042] The removed filter plate 8 is cleaned to remove any residual material impurities and ensure the filtration performance of the filter plate 8.

[0043] After cleaning, reinstall the filter plate 8 back in its original position, and start the second motor 22 again to make the bottom shell 7 drive the transfer tank 5 back to the initial position, restoring the normal operation of the equipment.

[0044] The screw 18 driven by the second motor 22 allows the filter plate 8 to be easily removed from the equipment for cleaning. The operation is simple and convenient, greatly shortening the equipment maintenance time and improving the efficiency of the equipment.

[0045] Both the first motor 9 and the second motor 22 are servo motors, which can precisely control the speed and direction of the motors, meet the precise requirements of different slurry processing for crushing speed and filter plate 8 cleaning operation, and improve the automation control level of the equipment.

[0046] The transfer pipe 6 and the bottom shell 7, and the feed pipe 3 and the top shell 4 adopt an integrated structure, which enhances the stability of the equipment structure and reduces the risk of leakage at the connection points. The rubber sealing ring between the top shell 4 and the bottom shell 7 further ensures the sealing during material transmission, preventing slurry leakage from polluting the production environment.

[0047] In the description herein, it should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A clog-resistant spray dryer, comprising a dryer body (1), wherein a top cover (2) is provided at the top of the dryer body (1), a centrifugal nozzle is provided in the middle part of the top cover (2), and a feed pipe (3) is provided at the feed end of the centrifugal nozzle, characterized in that: The top of the feed pipe (3) is provided with a top shell (4), and the top cover (2) is provided with a transfer tank (5). The bottom of the transfer tank (5) is provided with a transfer pipe (6). The bottom of the transfer pipe (6) is provided with a bottom shell (7) that cooperates with the top shell (4). The bottom shell (7) is fixed to the upper end of the top shell (4), and a filter plate (8) is provided between the top shell (4) and the bottom shell (7). The transfer tank (5) is fixedly equipped with a box (10). A first rotating shaft (11) is vertically rotatable inside the box (10). A crushing rod (12) is provided at the top of the first rotating shaft (11). A first driven bevel gear block (13) is provided at the bottom of the first rotating shaft (11). A first motor (9) is provided on one side of the transfer tank (5). A first driving bevel gear block (14) that meshes with the first driven bevel gear block (13) is provided at the output end of the first motor (9).

2. The anti-clogging spray dryer according to claim 1, characterized in that: Two side blocks (17) are symmetrically arranged on the outer wall of the bottom shell (7). A U-shaped box (15) is provided at the upper end of the top cover (2). A second motor (22) is provided in the middle part of the U-shaped box (15). A second rotating shaft (16) is vertically rotatably arranged at both ends of the U-shaped box (15). A screw (18) penetrating the side block (17) is provided at the top end of the second rotating shaft (16), and the two screws (18) have a reverse thread structure. A fourth driven bevel gear block (26) is provided at the bottom end of the second rotating shaft (16). A third rotating shaft (20) and a fourth rotating shaft (27) are horizontally rotatably arranged inside the U-shaped box (15), and the two... The fourth rotating shaft (27) is located at both ends of the third rotating shaft (20). The third rotating shaft (20) has a third drive bevel gear block (21) at both ends and a second driven bevel gear block (24) in the middle part. The output end of the second motor (22) has a second drive bevel gear block (23) that meshes with the second driven bevel gear block (24). One end of the fourth rotating shaft (27) has a third driven bevel gear block (19) that meshes with the third drive bevel gear block (21), and the other end of the fourth rotating shaft (27) has a fourth drive bevel gear block (25) that meshes with the fourth driven bevel gear block (26).

3. The anti-clogging spray dryer according to claim 2, characterized in that: Both the first motor (9) and the second motor (22) are servo motors.

4. The anti-clogging spray dryer according to claim 3, characterized in that: A sealing ring is provided between the top shell (4) and the bottom shell (7).

5. A spray dryer for preventing clogging according to claim 4, characterized in that: The sealing ring is made of rubber.

6. A spray dryer for preventing clogging according to claim 5, characterized in that: The transfer pipe (6) and the bottom shell (7) are an integral structure, and the feed pipe (3) and the top shell (4) are an integral structure.

Images