Spray freeze drying tower and oyster peptide drying method

Abstract

The invention belongs to the related technical field of drying devices, and particularly discloses a spray freeze drying tower which comprises a support, a side frame and a spray dryer, the side frame is installed on one side of the outer wall of the support, the spray dryer is arranged above the side frame, a drying tower body is arranged in the support, and the drying tower body is arranged above the side frame. A rectangular barrel is connected to the interior of the drying tower body in a penetrating mode, an end opening of the spray dryer communicates with the interior of the drying tower body through an arranged conveying assembly, side rods are arranged on the two sides of the inner wall of the rectangular barrel, and the interiors of the two side rods are jointly connected with a bag net through correspondingly-arranged sliding parts; a sliding frame is jointly installed in the two side rods in a sliding mode, a material scattering part is arranged at the position, close to the middle, in the sliding frame, and a driving part is arranged at the lower end in the sliding frame, the oyster peptide extract can be well dried, drying is sufficient in the drying process, and excessive adhesion is avoided.

Description

Technical Field

[0001] This invention belongs to the technical field of drying equipment, and specifically discloses a spray freeze-drying tower and a drying method for oyster peptides. Background Technology

[0002] To ensure the stable storage of high-value-added products such as pharmaceuticals, biological products, and food, it is often necessary to dry their liquid forms into powders. These products contain many heat-sensitive active substances that are easily deactivated under high-temperature conditions. To preserve the active ingredients and maintain the product's efficacy, bioavailability, and nutritional value, intermittent batch production using vacuum freeze-drying is commonly employed. However, each batch requires a long production time, involves high energy consumption due to the high vacuum level, and produces products with large and widely distributed particle sizes, sometimes even clumping. To reduce particle size, shorten production time, lower energy consumption and production costs, and increase product solubility or dissolution rate, spray freeze-drying technology has been developed in recent years. This technology involves atomizing a liquid, freezing it into ice particles through sufficient contact with a cold medium, and then drying these ice particles into powder. This process can produce porous micro-powder products with high bioactivity, low density, high specific surface area, and high solubility or dissolution rate.

[0003] The existing equipment cannot effectively dry oyster peptide extract. Its simple structure results in a large droplet size after atomization due to the increased viscosity of the material at lower temperatures during the spray freezing process. This makes it difficult to control and leads to a long drying time at the end, requiring multiple manual interventions and frequent shutdowns, which affects the use of the equipment. Therefore, we need to improve it. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the background art, and to propose a spray freeze-drying tower, including a support frame, side frames, and a spray dryer. The side frames are installed on one side of the outer wall of the support frame, and the spray dryer is located above the side frames. The drying tower body is arranged inside the support frame, and a rectangular cylinder is connected through the drying tower body. The port of the spray dryer is connected to the interior of the drying tower body through a set conveying component. Side rods are provided on both sides of the inner wall of the rectangular cylinder. The two side rods are connected to a net through corresponding sliding parts. A sliding frame is slidably installed inside the two side rods. A material distribution component is provided inside the sliding frame near the middle, and a driving component is provided at the lower end of the sliding frame.

[0005] Preferably, the conveying assembly includes a conveying pipe connected to the port of the spray dryer, and a spraying device is connected to the end of the conveying pipe away from the spray dryer. The spraying device is fixedly installed inside the drying tower body above the upper surface through a connecting pipe fixedly installed on the upper surface, and multiple spray heads are arranged inside the lower part of the spraying device.

[0006] Preferably, the sliding member includes a retainer slidably mounted inside the side rod, with one side of the net being secured inside the retainer.

[0007] Preferably, the bulk component includes a rotating rod rotatably connected inside the slide frame and near the middle, a gear is fitted on the outer side of the rotating rod, a toothed rod is provided at the rear end of the inner wall of the rectangular cylinder, the gear and the toothed rod mesh with each other, a T-shaped rod is provided at the lower end of the rotating rod, and swinging components are provided on both sides inside the T-shaped rod.

[0008] Preferably, the swinging component includes a round rod that slides through one side of the T-shaped rod, a spring is fitted on the outside of the round rod and above the T-shaped rod, a disc is fixedly provided at the bottom end of the round rod, and multiple distributing rods are provided at the bottom of the disc, with a stop bead provided at the lower end of each of the multiple distributing rods.

[0009] Preferably, the driving component includes a lead screw and a slide rod. One end of the lead screw is rotatably installed inside the rectangular tube, and the other end is equipped with a motor. The motor is fixedly mounted on the outside of the rectangular tube via an outer support plate. The lead screw and the slide frame are threadedly connected. The end of the slide frame away from the lead screw is slidably connected to the slide rod. The slide rod is fixedly installed inside the rectangular tube on the side away from the lead screw. A rotating shaft is rotatably inserted inside the lower part of the slide frame. A sleeve is provided in the middle of the outer side of the rotating shaft. Multiple sets of fixing sleeves are provided outside the sleeve. A curved rod is provided on one side of the outer wall of each of the multiple sets of fixing sleeves. A retaining shaft is rotatably inserted inside the end of the curved rod away from the fixing sleeve. A sleeve is fixedly installed at both ends of the retaining shaft. Arc-shaped scrapers are installed at equal intervals along the circumferential direction on the outer surface of the sleeve. Rollers are fitted at both ends of the rotating shaft. The outer surfaces of the two sets of rollers roll on the inner surface of the rectangular tube.

[0010] Preferably, a sealing plate is installed at the front end of the inner cavity of the rectangular tube, and a pull plate is provided at the upper end of the sealing plate. Lifting rods are fixedly installed on the lower outer side of the drying tower body, and the side of the two lifting rods away from the drying tower body is connected to the support.

[0011] A method for drying oyster peptides, using the aforementioned spray freeze-drying tower, includes the following usage: S1: Remove the sealing plate and pull the card holder and net out from inside the rectangular tube. Then place the oyster peptide extract inside the net and push it back into the rectangular tube to seal the plate. S2: After the spray dryer is started, the oyster peptide extract inside the net is dried through the conveying pipe and spraying device. During the drying process, the motor drives the lead screw to rotate at the rear end. Under the sliding position of the slide bar, the slide frame connected to the lead screw thread moves back and forth inside the rectangular cylinder. S3: During the movement of the sliding frame, the rollers roll and adhere to the inner surface of the rectangular tube, causing the rotating shaft, sleeve, fixed sleeve, crank rod, shell, and scraper to roll at the lower end of the net. After the crank rod rotates once, the shell and scraper squeeze the outer surface of the net, thereby agitating the oyster peptide extract during the drying process, thus reducing the stickiness between materials and allowing the materials to dry evenly. S4: During the movement of the rotating rod and gear in the middle of the sliding frame, the gear meshes with the rack, causing the rotating rod and T-shaped rod to drive the round rods at both ends inside to rotate, thus distributing the material on the inner surface of the mesh and accelerating the drying rate of the oyster peptide extract.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The sliding mechanism allows for easy collection of materials inside the net by connecting the card holder and the side rod.

[0013] 2. By using rollers, rotating shafts, sliding frames, driving components, sleeves, cranks, housings, and scrapers, the extract contained inside the net can be moved back and forth inside the rectangular cylinder while being located below the outside of the net, thus reducing material sticking during freeze-drying.

[0014] 3. By using a toothed rod, gear, rotating rod, T-shaped rod, disc, and distributing rod, the extract can be moved inside the mesh, thereby further enhancing the drying rate of the oyster peptide extract. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention from another angle; Figure 3 This is a schematic diagram showing the connection between the drying tower and the inner part of the rectangular cylinder of the present invention; Figure 4 This is a schematic diagram of the connection structure between the slider and the side rod of the present invention; Figure 5 This is a schematic diagram of the connection structure between the sliding frame and the rotating rod of the present invention; Figure 6 This is a schematic diagram showing the connection between the sleeve and the fixing sleeve of the present invention installed on the outside of the rotating shaft; Figure 7 For the present invention Figure 5 Schematic diagram of the structure at point A Figure 8 For the present invention Figure 6 Schematic diagram of the structure at point B.

[0016] In the diagram: 1. Support frame; 2. Side frame; 3. Spray dryer; 4. Drying tower body; 5. Rectangular cylinder; 6. Lifting rod; 7. Motor; 8. Sealing plate; 9. Pulling plate; 10. Conveying pipe; 11. Connecting pipe; 12. Spraying device; 13. Spray head; 14. Side rod; 15. Sliding frame; 16. Lead screw; 17. Net; 18. Sliding rod; 19. Card seat; 20. Rotating rod; 21. Gear; 22. T-shaped rod; 23. Spring; 24. Round rod; 25. Disc; 26. Rotating shaft; 27. Roller; 28. Sheath; 29. ​​Fixing sleeve; 30. Distributor rod; 31. Abutment ball; 32. Curved rod; 33. Card shaft; 34. Housing; 35. Scraper; 36. Toothed rod. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0019] like Figures 1-8 The spray freeze-drying tower shown includes a support frame 1, a side frame 2, and a spray dryer 3. The side frame 2 is installed on one side of the outer wall of the support frame 1, and the spray dryer 3 is located above the side frame 2. The drying tower body 4 is installed inside the support frame 1. A rectangular cylinder 5 is connected through the drying tower body 4. The port of the spray dryer 3 is connected to the interior of the drying tower body 4 through a conveying component. Side rods 14 are provided on both sides of the inner wall of the rectangular cylinder 5. The two side rods 14 are connected to a net 17 through corresponding sliding parts. A sliding frame 15 is slidably installed inside the two side rods 14. A material distribution component is provided inside the sliding frame 15 near the middle, and a driving component is provided at the lower end of the sliding frame 15.

[0020] The conveying assembly includes a conveying pipe 10 connected to the port of the spray dryer 3. A spraying device 12 is connected to the end of the conveying pipe 10 away from the spray dryer 3. The spraying device 12 is fixedly installed inside the drying tower body 4 through a connecting pipe 11 fixedly installed on the upper surface. Multiple spraying heads 13 are provided inside the lower part of the spraying device 12. Reference manual attached Figure 3 It can be seen that the spray dryer 3 is an existing device, which dries the inside of the drying tower body 4 through the conveying pipe 10 and the spraying device 12.

[0021] The sliding component includes a retainer 19 that is slidably installed inside the side rod 14, and one side of the net 17 is secured inside the retainer 19; Reference manual attached Figure 3 and Figure 4 As can be seen, the card holder 19 can be used to install the net 17. The net 17 can be made of wear-resistant fiber mesh. The sliding fit between the card holder 19 and the side rod 14 makes it convenient for the net 17 to pick up materials later.

[0022] The bulk component includes a rotating rod 20 rotatably connected inside the slide frame 15 and near the middle. A gear 21 is fitted on the outside of the rotating rod 20. A toothed rod 36 is provided at the rear end of the inner wall of the rectangular cylinder 5. The gear 21 and the toothed rod 36 mesh with each other. A T-shaped rod 22 is provided at the lower end of the rotating rod 20. A swinging component is provided on both sides inside the T-shaped rod 22. The swinging component includes a round rod 24 that slides through one side inside the T-shaped rod 22. A spring 23 is fitted on the outside of the round rod 24 and above the T-shaped rod 22. A disc 25 is fixedly provided at the bottom end of the round rod 24. Multiple distributing rods 30 are provided at the bottom of the disc 25. Each of the multiple distributing rods 30 has a stop ball 31 at its lower end. Reference manual attached Figure 3 , Figure 5 , Figure 6 , Figure 7 As can be seen, when the rotating rod 20 moves with the sliding frame 15, it can mesh with the gear 36 through the external gear 21, thereby causing the T-shaped rod 22 and the disc 25 at the lower end of the rotating rod 20 to rotate. As a result, the multiple distributing rods 30 and the abutment ball 31 can distribute the material inside the net 17, thereby reducing the adhesion of the material and drying the material better.

[0023] The driving components include a lead screw 16 and a slide rod 18. One end of the lead screw 16 is rotatably mounted inside the rectangular tube 5, and the other end is equipped with a motor 7. The motor 7 is fixedly mounted on the outside of the rectangular tube 5 via an outer support plate. The lead screw 16 is threadedly connected to the slide frame 15. The end of the slide frame 15 away from the lead screw 16 is slidably connected to the slide rod 18. The slide rod 18 is fixedly located inside the rectangular tube 5 on the side away from the lead screw 16. A rotating shaft 26 is rotatably inserted through the lower part of the slide frame 15. The outer side of the rotating shaft 26... A sleeve 28 is provided in the middle, and multiple sets of fixing sleeves 29 are provided on the outside of the sleeve 28. A curved rod 32 is provided on one side of the outer wall of each set of fixing sleeves 29. A retaining shaft 33 is inserted into the end of the curved rod 32 away from the fixing sleeve 29. A sleeve 34 is fixedly provided at both ends of the retaining shaft 33. Arc-shaped scrapers 35 are installed at equal intervals along the circumferential direction on the outer surface of the sleeve 34. Rollers 27 are fitted at both ends of the outer side of the rotating shaft 26. The outer surfaces of the two sets of rollers 27 roll on the inner surface of the rectangular tube 5. Reference manual attached Figure 1 , Figure 6 and Figure 8As can be seen, the motor 7 drives the lead screw 16 to rotate, and under the sliding position of the slide bar 18, it causes the slide frame 15 to move back and forth inside the rectangular cylinder 5. The slide frame 15 also drives the rotating shaft 26 and the external structure of the rotating shaft 26 to move. Under the drive of the roller 27 outside the rotating shaft 26, it rolls on the inner surface of the rectangular cylinder 5, which in turn causes the fixed sleeve 29 and the crank rod 32 outside the sleeve 28 to rotate. The crank rod 32 is also arranged in a cross shape, so that it contacts the net 17 outside the net 17 through the sleeve 34 and the scraper 35, pushing the material inside the net 17 upward.

[0024] The front end of the rectangular tube 5 is sealed with a sealing plate 8, and a pull plate 9 is provided on the upper end of the sealing plate 8. Lifting rods 6 are fixedly installed on the lower side of the outer side of the drying tower body 4. The side of the two lifting rods 6 away from the drying tower body 4 is connected to the support 1. Reference manual attached Figure 1 and Figure 2 It can be seen that the sealing plate 8 and the pull plate 9 are used to block the material inlet at the front end of the rectangular cylinder 5, so as to ensure the sealing of the drying tower body 4 during drying. The supporting rod 6 can be used to support the outside of the drying tower body 4 to enhance stability.

[0025] A method for drying oyster peptides, using the aforementioned spray freeze-drying tower, includes the following usage: S1: Remove the sealing plate 8, pull the card holder 19 and the net 17 out from the inside of the rectangular tube 5, then place the oyster peptide extract inside the net 17, and then push it back into the rectangular tube 5 to seal the sealing plate 8. S2: After the spray dryer 3 is started, the oyster peptide extract inside the net 17 is dried through the conveying pipe 10 and the spraying device 12. During the drying process, the motor 7 drives the lead screw 16 to rotate at the rear end. Under the sliding position of the slide bar 18, the slide frame 15, which is threadedly connected to the lead screw 16, moves back and forth inside the rectangular cylinder 5. S3: During the movement of the sliding frame 15, the roller 27 rolls and adheres to the inner surface of the rectangular tube 5, causing the rotating shaft 26, sleeve 28, fixing sleeve 29, crank 32, shell 34, and scraper 35 to roll at the lower end of the net 17. After the crank 32 rotates once, the shell 34 and scraper 35 press against the outer surface of the net 17, thereby agitating the oyster peptide extract during the drying process, thereby reducing the stickiness between materials and enabling the materials to dry evenly. S4: The rotating rod 20 and gear 21 in the middle of the sliding frame 15 mesh with the toothed rod 36 during the movement, causing the rotating rod 20 and T-shaped rod 22 to drive the round rods 24 at both ends inside to rotate, thereby dispensing the material on the inner surface of the net 17 and accelerating the drying rate of the oyster peptide extract.

[0026] Working principle: During use, the operator pulls the pull plate 9 to remove the sealing plate 8 from the front end of the rectangular cylinder 5, places the oyster peptide extract to be dried inside the mesh 17, and then reassembles the sealing plate 8 to ensure the sealing of the drying tower body 4 and the rectangular cylinder 5. Then, the spray dryer 3 is started, and the oyster peptide extract inside the mesh 17 is dried through the conveying pipe 10 and the spraying device 12. The motor 7 drives the lead screw 16 inside the rectangular cylinder 5 to rotate at the rear end. The sliding frame 15 drives the rotating shaft 26, roller 27 and sleeve 28 to move. During the movement, the roller 27 rolls and contacts the inner surface of the rectangular cylinder 5, causing the rotating shaft 26 to drive the fixed sleeve 29 and the crank 32 to rotate. Then, the retaining shaft 33 at one end of the crank 32 will contact the mesh 17 containing the oyster peptide extract during the rotation. 7. The outer surface contact, the shell 34, the curved rod 32 and the scraper 35 can squeeze the oyster peptide extract from the outside and below, so that the position of the oyster peptide extract can change flexibly, reducing the adhesion of the material. The gear 21 in the middle of the slide frame 15 meshes with the toothed rod 36 during the movement, causing the rotating rod 20 to drive the T-shaped rod 22 below to rotate. During the process of the net 17 flipping down and lifting up, the disc 25, the distributing rod 30 and the abutment 31 will come into contact with the material on the inner surface of the net 17. When the curved rod 32 makes hard contact with the disc 25 when rotating and pressing against the net 17, the rod 24 will automatically and flexibly move up, and then return to its original position under the elastic tension of the spring 23. This can reduce the hard friction when the net 17 is distributing material up and down, and thus further improve the drying effect of the oyster peptide extract.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A spray freeze-drying tower, comprising a support frame (1), side frames (2), and a spray dryer (3), characterized in that: The side frame (2) is installed on one side of the outer wall of the support (1). The spray dryer (3) is set above the side frame (2). The support (1) is equipped with a drying tower body (4). A rectangular cylinder (5) is connected through the drying tower body (4). The port of the spray dryer (3) is connected to the inside of the drying tower body (4) through a set conveying component. Side rods (14) are set on both sides of the inner wall of the rectangular cylinder (5). The two side rods (14) are connected to a net (17) through corresponding sliding parts. A sliding frame (15) is slidably installed inside the two side rods (14). A loose material part is set inside the sliding frame (15) and a driving part is set at the lower end of the sliding frame (15).

2. The spray freeze-drying tower according to claim 1, characterized in that: The conveying assembly includes a conveying pipe (10) connected to the port of the spray dryer (3). A spraying device (12) is connected to one end of the conveying pipe (10) away from the spray dryer (3). The spraying device (12) is fixedly installed above the inside of the drying tower body (4) through a connecting pipe (11) fixedly installed on the upper surface. Multiple spray heads (13) are provided below the inside of the spraying device (12).

3. The spray freeze-drying tower according to claim 1, characterized in that: The sliding element includes a card seat (19) that is slidably installed inside the side rod (14), and one side of the net (17) is locked inside the card seat (19).

4. A spray freeze-drying tower according to claim 3, characterized in that: The bulk component includes a rotating rod (20) rotatably connected inside the sliding frame (15) and near the middle. A gear (21) is fitted on the outside of the rotating rod (20). A toothed rod (36) is provided at the rear end of the inner wall of the rectangular tube (5). The gear (21) and the toothed rod (36) mesh with each other. A T-shaped rod (22) is provided at the lower end of the rotating rod (20). Swinging components are provided on both sides inside the T-shaped rod (22).

5. A spray freeze-drying tower according to claim 4, characterized in that: The swinging component includes a round rod (24) that slides through one side of the T-shaped rod (22). A spring (23) is fitted on the outside of the round rod (24) and above the T-shaped rod (22). A disc (25) is fixedly provided at the bottom end of the round rod (24). Multiple dispensing rods (30) are provided at the bottom of the disc (25). Each of the dispensing rods (30) has a stop bead (31) at its lower end.

6. A spray freeze-drying tower according to claim 1, characterized in that: The driving component includes a lead screw (16) and a slide rod (18). One end of the lead screw (16) is rotatably mounted inside the rectangular tube (5), and the other end is equipped with a motor (7). The motor (7) is fixedly mounted on the outside of the rectangular tube (5) by an outer support plate. The lead screw (16) is threadedly connected to the slide frame (15). The end of the slide frame (15) away from the lead screw (16) is slidably connected to the slide rod (18). The slide rod (18) is fixedly mounted inside the rectangular tube (5) on the side away from the lead screw (16). A rotating shaft (26) is rotatably inserted into the lower part of the slide frame (15). A sleeve (28) is provided in the middle of the outer side. Multiple sets of fixed sleeves (29) are provided on the outer side of the sleeve (28). A crank rod (32) is provided on one side of the outer wall of each set of fixed sleeves (29). A retaining shaft (33) is inserted into the end of the crank rod (32) away from the fixed sleeve (29). A sleeve shell (34) is fixedly provided at both ends of the retaining shaft (33). Arc-shaped scrapers (35) are installed at equal intervals along the circumferential direction on the outer surface of the sleeve shell (34). Rollers (27) are fitted on both ends of the rotating shaft (26). The outer surfaces of the two sets of rollers (27) roll on the inner surface of the rectangular tube (5).

7. A spray freeze-drying tower according to claim 1, characterized in that: The rectangular tube (5) is sealed with a sealing plate (8) at the front end. A pull plate (9) is provided on the upper end of the sealing plate (8). Lifting rods (6) are fixedly installed on the lower side of the main body of the drying tower (4). The two lifting rods (6) are connected to the support (1) on the side away from the main body of the drying tower (4).

8. A method for drying oyster peptides, using any one of the spray freeze-drying towers according to claims 1-7, comprising the following usage methods: S1: Remove the sealing plate (8), pull the card holder (19) and net (17) out from the inside of the rectangular tube (5), then place the oyster peptide extract inside the net (17), and then push it back into the rectangular tube (5) to seal the sealing plate (8); S2: After the spray dryer (3) is started, the oyster peptide extract inside the net (17) is dried through the conveying pipe (10) and the spraying device (12). During the drying process, the motor (7) drives the lead screw (16) to rotate at the rear end. Under the sliding position of the slide bar (18), the slide frame (15) threadedly connected to the lead screw (16) moves back and forth inside the rectangular cylinder (5). S3: During the movement of the sliding frame (15), the roller (27) rolls and adheres to the inner surface of the rectangular tube (5), causing the rotating shaft (26), sleeve (28), fixed sleeve (29), crank rod (32), shell (34), and scraper (35) to roll at the lower end of the net (17). After the crank rod (32) rotates once, the shell (34) and scraper (35) squeeze the outer surface of the net (17), thereby moving the oyster peptide extract during the drying process, thereby reducing the stickiness between materials and enabling the materials to dry evenly. S4: During the movement of the rotating rod (20) and gear (21) in the middle of the sliding frame (15), the gear (21) meshes with the rack (36), causing the rotating rod (20) and T-shaped rod (22) to drive the round rods (24) at both ends inside to rotate, thereby picking up the material on the inner surface of the net (17) and accelerating the drying rate of the oyster peptide extract.

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