A drying tower of a centrifugal spray dryer

Abstract

This utility model relates to a drying tower for a centrifugal spray dryer, belonging to the technical field of drying equipment. This utility model uses a motor to drive a scraper frame to rotate, which in turn moves the scraper blades along the inner wall of the drying tower. This effectively removes residual powder particles adhering to the inner wall of the drying tower, reducing material waste and increasing material collection capacity. Simultaneously, it reduces reliance on manual cleaning, lowers cleaning difficulty and worker workload, eliminates the need for frequent machine shutdowns for cleaning, saves time and labor costs, and improves production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of drying equipment technology, specifically relating to a drying tower of a centrifugal spray dryer. Background Technology

[0002] A centrifugal spray dryer is a device that disperses liquid materials into mist droplets using a sprayer, allowing them to rapidly evaporate and dry in hot air to form a powdered product. It is widely used in the chemical, food, and pharmaceutical industries, and offers advantages such as fast drying speed, high product quality, and simple operation.

[0003] However, during the operation of a high-speed centrifugal spray dryer, the dried powder particles tend to float and adhere to the inner wall of the drying tower, forming residues. This not only affects the amount of material collected but also makes cleaning inconvenient, usually requiring periodic shutdowns for manual cleaning. This not only increases the labor intensity of workers but also reduces production efficiency. Utility Model Content

[0004] To overcome the problem in the prior art where dried powder particles in high-speed centrifugal spray dryers tend to float and adhere to the inner wall of the drying tower during operation, forming residues that not only affect material collection but also cause inconvenience in cleaning, typically requiring periodic shutdowns for manual cleaning, which increases labor intensity and reduces production efficiency, this utility model provides a drying tower for a centrifugal spray dryer. A motor drives a scraper frame to rotate, which in turn moves a scraper plate along the inner wall of the drying tower, effectively removing residual powder particles adhering to the inner wall, reducing material waste, increasing material collection volume, and simultaneously reducing reliance on manual cleaning, lowering cleaning difficulty and labor intensity, eliminating the need for frequent shutdowns for cleaning, saving time and labor costs, and improving production efficiency.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A drying tower of a centrifugal spray dryer mainly includes a drying cylinder, a centrifugal atomizer, a motor, a support assembly, a scraper frame, and a scraper plate. The centrifugal atomizer, which is connected to the interior of the drying cylinder, is installed at the center of the top of the drying cylinder, and a discharge port is provided at the bottom. Support assemblies are evenly installed along the circumferential direction on the inner wall of the drying cylinder. The scraper frame is rotatably installed inside the drying cylinder through two sets of support assemblies, and a scraper plate that fits against the inner wall of the drying cylinder is installed on the scraper frame. The motor is installed at the top of the drying cylinder, and the output shaft of the motor passes through the inner wall of the drying cylinder and is connected to the scraper frame for transmission.

[0006] The support assembly includes a support block, a connecting shaft, and a fixed pulley. The support block is fixedly installed on the inner wall of the drying cylinder, and the fixed pulley is rotatably installed on the support block through the connecting shaft.

[0007] The scraper includes an upper annular block, a lower annular block, a first connecting rod, and a second connecting rod. The outer rings of the upper and lower annular blocks are provided with annular protrusions that slide with a fixed pulley. The upper and lower annular blocks are fixedly connected by the first connecting rod. The bottom of the lower annular block is uniformly equipped with a second connecting rod at an angle consistent with the conical bottom surface of the drying cylinder along the circumferential direction. Scraper plates that fit against the inner wall of the drying cylinder are respectively installed on the first and second connecting rods. The inner ring of the upper annular block is provided with a gear ring, and a gear that meshes with the gear ring is installed on the output shaft of the motor.

[0008] Connecting blocks are rotatably mounted on the first and second connecting rods. The connecting blocks are fixedly connected to the end of the scraper. Fixing blocks are provided on the inner rings of the upper and lower annular blocks. Torsion springs are sleeved on the first and second connecting rods. One end of the torsion spring abuts against the fixing block, and the other end abuts against the connecting block.

[0009] The side of the scraper forms a 15-20° angle with the tangent direction of the inner wall of the drying cylinder.

[0010] The beneficial effects of this utility model are:

[0011] This invention uses a motor to drive the scraper frame to rotate, which in turn moves the scraper plate along the inner wall of the drying tower. This allows for the timely removal of residual powder particles adhering to the inner wall of the drying tower, reducing material waste and increasing the amount of material collected. At the same time, it reduces reliance on manual cleaning, lowers the difficulty of cleaning and the labor intensity of workers, eliminates the need for frequent machine shutdowns for cleaning, saves time and labor costs, and improves production efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0013] Figure 2 This is a cross-sectional view of the present invention.

[0014] Figure 3 This is a 3D schematic diagram of the wall scraper.

[0015] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0016] Figure 5 yes Figure 3 A magnified view of a section at point B in the middle.

[0017] Figure 6 This is a magnified view of the connection between the motor and the scraper frame.

[0018] Figure 7 This is a 3D schematic diagram of the wall scraper installation status. Detailed Implementation

[0019] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0020] This utility model discloses a drying tower for a centrifugal spray dryer. The drying tower of the centrifugal spray dryer mainly includes a drying cylinder 1, a centrifugal atomizer 2, a motor 3, a support assembly 4, a scraper frame 5, and a scraper plate 6. The centrifugal atomizer 2, which is connected to the inside of the drying cylinder 1, is installed at the center of the top and has a discharge port at the bottom. The support assembly 4 is evenly installed along the circumferential direction on the inner wall of the drying cylinder 1. The scraper frame 5 is rotatably installed inside the drying cylinder 1 through two sets of support assemblies 4. The scraper plate 6, which is in contact with the inner wall of the drying cylinder 1, is installed on the scraper frame 5. The motor 3 is installed at the top of the drying cylinder 1, and the output shaft of the motor 3 passes through the inner wall of the drying cylinder 1 and is connected to the scraper frame 5 for transmission.

[0021] During operation, the motor 3 is started, which drives the scraper frame 5 to rotate on the support assembly 4. The scraper plate 6 moves along the inner wall of the drying cylinder 1 as the scraper frame 5 rotates, scraping off the powder particles adhering to the inner wall of the drying cylinder 1, causing them to fall to the bottom of the drying cylinder 1 and be discharged through the outlet. Through the continuous action of the scraper frame 5 and the scraper plate 6, the residue of powder particles on the inner wall of the drying cylinder 1 is effectively reduced, the material collection volume is increased, and the reliance on manual cleaning is reduced, the cleaning difficulty and the labor intensity of workers are lowered, and frequent machine shutdowns for cleaning are eliminated, saving time and labor costs and improving production efficiency.

[0022] The support assembly 4 includes a support block 401, a connecting shaft 402, and a fixed pulley 403. The support block 401 is fixedly installed on the inner wall of the drying cylinder 1, and the fixed pulley 403 is rotatably installed on the support block 401 via the connecting shaft 402. The scraping frame 5 includes an upper annular block 501, a lower annular block 502, a first connecting rod 503, and a second connecting rod 504. The outer rings of the upper annular block 501 and the lower annular block 502 are provided with annular protrusions 5011 that are slidably connected to the fixed pulley 403. The annular block 501 and the lower annular block 502 are fixedly connected by a first connecting rod 503. A second connecting rod 504, with an angle consistent with the conical bottom surface of the drying cylinder 1, is evenly installed along the circumferential direction at the bottom of the lower annular block 502. Scraper plates 6, which fit against the inner wall of the drying cylinder 1, are respectively installed on the first connecting rod 503 and the second connecting rod 504. A gear ring 5012 is provided on the inner ring of the upper annular block 501, and a gear 301 meshing with the gear ring 5012 is installed on the output shaft of the motor 3. After startup, the gear 301 on the output shaft drives the upper annular block 501 to rotate, which in turn drives the scraper frame 5 to rotate as a whole. When the scraper frame 5 rotates, the scraper plates 6 on the first connecting rod 503 and the second connecting rod 504 rotate together to scrape off the material adhering to the inner wall of the drying cylinder 1 and prevent material residue. The annular protrusions 5011 on the outer ring of the upper annular block 501 and the lower annular block 502 are slidably connected to the fixed pulleys 403 on the support block 401, which play a supporting and guiding role to ensure that the scraper frame 5 rotates smoothly.

[0023] Connecting blocks 505 are rotatably mounted on the first connecting rod 503 and the second connecting rod 504. The connecting blocks 505 are fixedly connected to the end of the scraper 6. Fixing blocks 5013 are provided on the inner rings of the upper annular block 501 and the lower annular block 502. Torsion springs 506 are sleeved on the first connecting rod 503 and the second connecting rod 504. One end of the torsion spring 506 abuts against the fixing block 5013, and the other end abuts against the connecting block 505. When the scraper frame 5 rotates, the connecting blocks 505 also rotate with it. At the same time, the connecting blocks 505 generate an outward thrust under the torque of the torsion spring 506, so that the scraper 6 is always in close contact with the inner wall of the drying cylinder 1, which improves the scraping effect, effectively prevents material residue, and helps to keep the inner wall of the drying cylinder 1 clean.

[0024] The side of the scraper 6 forms a 15-20° angle with the tangent direction of the inner wall of the drying cylinder 1, so that the scraper 6 generates a forward propulsion force during the scraping process, which can more effectively scrape off the material adhering to the inner wall of the drying cylinder 1.

[0025] Work process:

[0026] During operation, motor 3 is started, and motor 3 drives the upper annular block 501 to rotate through gear 301 on the output shaft, which in turn drives the scraper frame 5 to rotate as a whole. The scraper plate 6 moves along the inner wall of the drying cylinder 1 as the scraper frame 5 rotates, scraping off the powder particles adhering to the inner wall of the drying cylinder 1, causing them to fall to the bottom of the drying cylinder 1 and be discharged through the outlet. At the same time, the connecting block 505 generates an outward thrust under the torque of the torsion spring 506, so that the scraper plate 6 is always in close contact with the inner wall of the drying cylinder 1, improving the scraping effect, effectively preventing material residue, and helping to keep the inner wall of the drying cylinder 1 clean. Through the continuous action of the scraper frame 5 and the scraper plate 6, the residue of powder particles on the inner wall of the drying cylinder 1 is effectively reduced, the material collection volume is increased, and the reliance on manual cleaning is reduced, the cleaning difficulty and the labor intensity of workers are reduced, the need for frequent machine shutdowns for cleaning is eliminated, saving time and labor costs and improving production efficiency.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A drying column of a centrifugal spray dryer, characterized by: The drying tower of the centrifugal spray dryer includes a drying cylinder (1), a centrifugal atomizer (2), a motor (3), a support assembly (4), a scraper frame (5), and a scraper plate (6). The centrifugal atomizer (2) connected to the interior is installed at the center of the top of the drying cylinder (1), and a discharge port is provided at the bottom. The support assembly (4) is evenly installed on the inner wall of the drying cylinder (1) along the circumferential direction. The scraper frame (5) is rotatably installed inside the drying cylinder (1) through two sets of support assemblies (4). The scraper plate (6) that fits against the inner wall of the drying cylinder (1) is installed on the scraper frame (5). The motor (3) is installed at the top of the drying cylinder (1), and the output shaft of the motor (3) passes through the inner wall of the drying cylinder (1) and is connected to the scraper frame (5) for transmission.

2. A drying column for a centrifugal spray drier as claimed in claim 1, characterized in that: The support assembly (4) includes a support block (401), a connecting shaft (402), and a fixed pulley (403). The support block (401) is fixedly installed on the inner wall of the drying cylinder (1), and the fixed pulley (403) is rotatably installed on the support block (401) through the connecting shaft (402).

3. A drying column for a centrifugal spray drier as claimed in claim 2, characterised in that: The scraper (5) includes an upper annular block (501), a lower annular block (502), a first connecting rod (503), and a second connecting rod (504). The outer rings of the upper annular block (501) and the lower annular block (502) are provided with annular protrusions (5011) that are slidably connected to the fixed pulley (403). The upper annular block (501) and the lower annular block (502) are fixedly connected by the first connecting rod (503). The bottom of the lower annular block (502) is uniformly equipped with a second connecting rod (504) that is at the same angle as the conical bottom surface of the drying cylinder (1) along the circumferential direction. The first connecting rod (503) and the second connecting rod (504) are respectively equipped with scraper plates (6) that fit against the inner wall of the drying cylinder (1). The inner ring of the upper annular block (501) is provided with a gear ring (5012). The output shaft of the motor (3) is equipped with a gear (301) that meshes with the gear ring (5012).

4. A drying column for a centrifugal spray drier as claimed in claim 3, characterised in that: Connecting blocks (505) are rotatably mounted on the first connecting rod (503) and the second connecting rod (504). The connecting blocks (505) are fixedly connected to the end of the scraper (6). Fixing blocks (5013) are provided on the inner rings of the upper annular block (501) and the lower annular block (502). Torsion springs (506) are sleeved on the first connecting rod (503) and the second connecting rod (504). One end of the torsion spring (506) abuts against the fixing block (5013), and the other end abuts against the connecting block (505).

5. A drying column for a centrifugal spray drier as claimed in claim 1 or 4, characterized in that: The side of the scraper (6) forms a 15-20° angle with the tangent direction of the inner wall of the drying cylinder (1).

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