Crystal separation device for fructose

Abstract

The utility model relates to the technical field of fructose production, and discloses a fructose crystallization separation device which comprises a crystallization tank body, a driving motor fixedly mounted in the center of the top of the crystallization tank body, an upper driving shaft fixedly connected to the output end of the driving motor, and upper stirring rods fixedly connected to the two sides of the upper driving shaft at equal intervals, a driving assembly is installed at the end, away from the driving motor, of the upper driving shaft. Through the arrangement of the driving assembly, after the driving motor is started, the upper stirring rod and the lower stirring rod can reversely mix and rotate in the crystallization tank body, a reverse rotation structure can form stronger convection in the crystallization tank body, the mixing effect of materials is enhanced, the convection can effectively break the local concentration gradient in the materials, and the crystallization effect is improved. The uniform mixing is promoted, the efficiency of the crystallization process is improved, uniform shearing force and stirring force can be generated in materials through reverse rotation, the size distribution nonuniformity of crystals can be reduced, and the quality and consistency of products are improved.

Description

Technical Field

[0001] This utility model relates to the field of fructose production technology, and more specifically to a fructose crystallization and separation device. Background Technology

[0002] A fructose crystallization separation device is a specialized piece of equipment used to promote fructose crystallization from a fructose solution and separate it from the solution. The principle is to lower the boiling point of the solution by reducing the pressure within the system, causing the solvent to evaporate at a lower temperature. This leads to a supersaturated state in the solution, thus promoting fructose crystallization. This method allows crystallization to occur under relatively mild temperature conditions, which helps protect the quality of the fructose and reduces potential deterioration caused by high temperatures. It generally includes a vacuum system, a heating system, a cooling system, a stirrer, and a crystallization tank. The vacuum system maintains a low-pressure environment within the tank; the heating system can appropriately heat the solution to promote evaporation; the cooling system helps control the temperature during the crystallization process; and the stirrer ensures uniform heating and solute distribution, promoting crystal formation and growth.

[0003] A search revealed CN219279918U, which discloses a crystallization separation device for producing lactulose. The device includes a crystallization tank with a temperature-controlled jacket, a stirring device, and several temperature sensors inside the tank. A first discharge valve is located at the bottom of the crystallization tank. A guide channel is located below the tank, with a cylindrical upper part and an inverted conical lower part. An inlet is located at the top of the guide channel, and a second discharge valve is located at the bottom. A centrifugal device is located within the cylindrical cavity of the guide channel, comprising a centrifugal screen at the top and a drive motor below the screen. A hot air inlet is located at the bottom of one side of the cylindrical cavity, and a hot air outlet is located at the top of the other side. The hot air inlet is connected to a blower via a pipe with a built-in electric heating wire.

[0004] The fructose crystallization separation device in this patent and the stirring device in existing crystallization separation devices are mostly driven by a motor. Therefore, the stirring shaft is a unidirectional axial rotation mixing structure. The axial rotation stirring device mainly achieves mixing by axial rotation, which can easily lead to uneven mixing of materials in the cylinder, affecting the crystallization effect, and easily leading to uneven crystal nucleation and growth, forming crystals of different sizes, which affects the consistency of product quality. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fructose crystallization and separation device to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a fructose crystallization separation device, including a crystallization tank, a drive motor fixedly installed at the center of the top of the crystallization tank, an upper drive shaft fixedly connected to the output end of the drive motor, and upper stirring rods fixedly connected at equal intervals on both sides of the upper drive shaft. A drive assembly is installed at the end of the upper drive shaft away from the drive motor, and a lower drive shaft is fixedly connected at the end of the drive assembly away from the upper drive shaft. Lower stirring rods are fixedly connected at equal intervals on the outer surface of the lower drive shaft.

[0007] The drive assembly includes a fixed rod fixedly connected to the inner wall of the crystallization tank. A connecting block is fixedly connected to the surface of the fixed rod. An upper positioning bearing is installed at the connection between the upper drive shaft and the connecting block. An upper drive bevel gear is fixedly connected to the end face of the upper drive shaft. A lower positioning bearing is installed at the connection between the lower drive shaft and the connecting block. A lower drive bevel gear is fixedly connected to the end face of the lower drive shaft near the upper drive bevel gear. A fixed bearing is fixedly installed inside the connecting block. A rotating shaft is fixedly connected to the inner ring of the fixed bearing. A driven bevel gear is fixedly connected to the end face of the rotating shaft. The surface of the driven bevel gear meshes with the surfaces of the upper and lower drive bevel gears. A positioning rod is slidably connected inside the lower drive shaft. A sliding block is fixedly connected to the end face of the positioning rod. A bolt is threaded inside the lower drive shaft. A rotating plate is fixedly connected to the end face of the bolt.

[0008] Furthermore, both the upper and lower stirring rods are rotatably connected inside the crystallization tank. A sealing ring is installed at the connection between the upper drive shaft and the connecting block, and a sealing ring is also installed at the connection between the lower drive shaft and the connecting block.

[0009] Furthermore, there are two fixed bearings, two rotating shafts, and two driven bevel gears. The upper driving bevel gear drives the lower driving bevel gear to rotate through the driven bevel gear. The upper driving bevel gear and the lower driving bevel gear rotate in opposite directions.

[0010] Furthermore, the upper drive bevel gear has a fixedly connected insertion hole that matches the positioning rod on its surface near the driven bevel gear. The positioning rod is hexagonal. The outer surface of the sliding block is slidably connected to the inside of the lower drive shaft. The inside of the lower drive shaft has a sliding groove that matches the positioning rod.

[0011] Furthermore, the outer surface of the rotating plate is rotatably connected to the inside of the bolt, the outer surface of the bolt is slidably connected to the inside of the lower drive shaft, and one end of the bolt near the rotating plate extends into the inside of the sliding block and is rotatably connected to the inside of the sliding block.

[0012] Furthermore, the surface of the connecting block is arc-shaped, and the end of the bolt extends to the bottom of the lower drive shaft.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model, by setting up a drive assembly, ensures that when the drive motor is started, the upper and lower drive shafts rotate in opposite directions, causing the upper and lower stirring rods to rotate in opposite directions inside the crystallization tank. The reverse rotation structure can create stronger convection inside the crystallization tank, enhancing the mixing effect of the materials. This convection can effectively break the local concentration gradient in the materials, promote uniform mixing, and improve the efficiency of the crystallization process. Furthermore, the reverse rotation can generate uniform shear force and stirring force in the materials, which helps crystal nucleation and growth, reduces the unevenness of crystal size distribution, and improves the quality and consistency of the product.

[0015] 2. This utility model, by setting a sliding positioning rod, allows the insertion and removal between the positioning rod and the upper drive bevel gear to switch between bidirectional rotation and unidirectional rotation according to specific operational needs. This flexibility enables the equipment to adapt to different application scenarios and process requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present utility model.

[0017] Figure 2 This is a schematic diagram showing the connection between the upper drive shaft, drive assembly, and lower drive shaft in this utility model;

[0018] Figure 3 This is a cross-sectional view of the drive component in this utility model;

[0019] Figure 4 This is a schematic diagram showing the connection between the sliding block and the rotating plate in this utility model.

[0020] The attached figures are labeled as follows: 1. Crystallization tank; 2. Drive motor; 3. Upper drive shaft; 4. Upper stirring rod; 5. Drive assembly; 51. Fixed rod; 52. Connecting block; 53. Upper positioning bearing; 54. Upper drive bevel gear; 55. Lower positioning bearing; 56. Lower drive bevel gear; 57. Fixed bearing; 58. Rotating shaft; 59. Driven bevel gear; 510. Positioning rod; 511. Sliding block; 512. Bolt; 5121. Rotating plate; 6. Lower drive shaft; 7. Lower stirring rod. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0022] Figures 1-4This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0023] Specifically, a fructose crystallization separation device includes a crystallization tank 1, a drive motor 2 fixedly installed at the top center of the crystallization tank 1, an upper drive shaft 3 fixedly connected to the output end of the drive motor 2, and upper stirring rods 4 fixedly connected at equal intervals on both sides of the upper drive shaft 3. A drive assembly 5 is installed at the end of the upper drive shaft 3 away from the drive motor 2, and a lower drive shaft 6 is fixedly connected at the end of the drive assembly 5 away from the upper drive shaft 3. Lower stirring rods 7 are fixedly connected at equal intervals on the outer surface of the lower drive shaft 6.

[0024] The drive assembly 5 includes a fixed rod 51 fixedly connected to the inner wall of the crystallization tank 1. A connecting block 52 is fixedly connected to the surface of the fixed rod 51. An upper positioning bearing 53 is installed at the connection between the upper drive shaft 3 and the connecting block 52. An upper drive bevel gear 54 is fixedly connected to the end face of the upper drive shaft 3. A lower positioning bearing 55 is installed at the connection between the lower drive shaft 6 and the connecting block 52. A lower drive bevel gear 56 is fixedly connected to the end face of the lower drive shaft 6 near the upper drive bevel gear 54. A fixed bearing 57 is fixedly installed inside the connecting block 52. A rotating shaft 58 is fixedly connected to the inner ring of the fixed bearing 57. A driven bevel gear 59 is fixedly connected to the end face of the rotating shaft 58. The surface of the driven bevel gear 59 meshes with the surfaces of the upper drive bevel gear 54 and the lower drive bevel gear 56. A positioning rod 510 is slidably connected inside the lower drive shaft 6. A sliding block 511 is fixedly connected to the end face of the positioning rod 510. A bolt 512 is threaded inside the lower drive shaft 6. A rotating plate 5121 is fixedly connected to the end face of the bolt 512.

[0025] In this embodiment, by setting up the drive assembly 5, after the drive motor 2 is started, the upper drive shaft 3 and the lower drive shaft 6 rotate in opposite directions, causing the upper stirring rod 4 and the lower stirring rod 7 to rotate in opposite directions inside the crystallization tank 1. The reverse rotation structure can form stronger convection inside the crystallization tank 1, enhancing the mixing effect of the material. This convection can effectively break the local concentration gradient in the material, promote uniform mixing, and improve the efficiency of the crystallization process. Furthermore, the reverse rotation can generate uniform shear force and stirring force in the material, which helps crystal nucleation and growth, reduces the non-uniformity of crystal size distribution, and improves the quality and consistency of the product.

[0026] Specifically, the upper stirring rod 4 and the lower stirring rod 7 are rotatably connected inside the crystallization tank 1. A sealing ring is installed at the connection between the upper drive shaft 3 and the connecting block 52, and a sealing ring is also installed at the connection between the lower drive shaft 6 and the connecting block 52.

[0027] In this embodiment, by setting a sealing ring, the material in the crystallization tank 1 can be prevented from entering the connecting block 52, thus enhancing the sealing performance.

[0028] Specifically, there are two fixed bearings 57, two rotating shafts 58, and two driven bevel gears 59. The upper driving bevel gear 54 drives the lower driving bevel gear 56 to rotate through the driven bevel gear 59. The rotation directions of the upper driving bevel gear 54 and the lower driving bevel gear 56 are opposite.

[0029] In this embodiment, by setting two driven bevel gears 59 to mesh with the upper drive bevel gear 54 and the lower drive bevel gear 56, excessive pressure can be avoided on a single driven bevel gear 59, thus extending the stability of the transmission structure.

[0030] Specifically, the upper drive bevel gear 54 has a fixed insertion hole that matches the positioning rod 510 near the surface of the driven bevel gear 59. The positioning rod 510 is hexagonal. The outer surface of the sliding block 511 is slidably connected to the inside of the lower drive shaft 6. The inside of the lower drive shaft 6 is provided with a sliding groove that matches the positioning rod 510.

[0031] In this embodiment, by setting a sliding positioning rod 510, the insertion and removal between the positioning rod 510 and the upper drive bevel gear 54 can switch between bidirectional rotation and unidirectional rotation according to specific operational requirements. This flexibility enables the equipment to adapt to different application scenarios and process requirements.

[0032] Specifically, the outer surface of the rotating plate 5121 is rotatably connected to the inside of the bolt 512, the outer surface of the bolt 512 is slidably connected to the inside of the lower drive shaft 6, and one end of the bolt 512 near the rotating plate 5121 extends into the inside of the sliding block 511 and is rotatably connected to the inside of the sliding block 511.

[0033] In this embodiment, rotating the bolt 512 can cause the positioning rod 510 to slide up and down.

[0034] Specifically, the surface of the connecting block 52 is arc-shaped, and the end of the bolt 512 extends to the bottom of the lower drive shaft 6.

[0035] In this embodiment, since the surface of the connecting block 52 is arc-shaped, the friction between it and the material when it rotates can be reduced, and the material should be prevented from falling onto the connecting block 52 and affecting crystallization as much as possible.

[0036] The working principle and usage process of this utility model are as follows: During use, the drive motor 2 is started, and the drive motor 2 drives the upper stirring rod 4 to rotate inside the crystallization tank 1 via the upper drive shaft 3. Simultaneously, as the upper drive shaft 3 rotates, it drives the driven bevel gear 59 to rotate via the upper positioning bearing 53. The driven bevel gear 59 drives the lower drive bevel gear 56 to rotate, and the lower drive bevel gear 56 drives the lower stirring rod 7 to rotate inside the crystallization tank 1 via the lower drive shaft 6. Furthermore, the upper drive shaft 3 and the lower drive shaft 6 rotate in opposite directions, causing the upper stirring rod 4 and the lower stirring rod 7 to rotate in opposite directions inside the crystallization tank 1. This reverse rotation structure can create stronger convection within the crystallization tank 1, enhancing the mixing effect of the materials. This convection can effectively break down local concentration gradients in the materials, promote uniform mixing, improve the efficiency of the crystallization process, and further enhance the mixing effect. Rotation generates uniform shear and stirring forces in the material, which helps crystal nucleation and growth, reduces the unevenness of crystal size distribution, and improves product quality and consistency. When the upper drive shaft 3 and the lower drive shaft 6 need to rotate in the same direction, the bolt 512 is rotated. The bolt 512 drives the sliding block 511 to slide upward through the rotating plate 5121. The sliding block 511 drives the positioning rod 510 to slide upward, and the top of the outer surface of the positioning rod 510 is inserted into the hexagonal insertion hole at the bottom of the upper drive bevel gear 54. When the upper drive shaft 3 rotates, it can drive the lower drive shaft 6 to rotate in the same direction. Therefore, the insertion and removal of the positioning rod 510 and the upper drive bevel gear 54 can be switched between bidirectional rotation and unidirectional rotation according to specific operational requirements. This flexibility allows the equipment to adapt to different application scenarios and process requirements.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A crystallization separation device for fructose, comprising a crystallization tank body (1), a drive motor (2) fixedly installed at the top center of the crystallization tank body (1), an upper drive shaft (3) fixedly connected to the output end of the drive motor (2), and upper stirring rods (4) fixedly connected at both sides of the upper drive shaft (3) at equal intervals, characterized in that: The upper drive shaft (3) is provided with a drive assembly (5) at one end away from the drive motor (2), and the drive assembly (5) is fixedly connected with a lower drive shaft (6) at one end away from the upper drive shaft (3), and the outer surface of the lower drive shaft (6) is equidistantly fixedly connected with a lower stirring rod (7). The drive assembly (5) comprises a fixed rod (51) fixedly connected to the inner wall of the crystallization tank (1), the surface of the fixed rod (51) is fixedly connected with a connecting block (52), the connecting portion of the upper drive shaft (3) and the connecting block (52) is provided with an upper positioning bearing (53), the end surface of the upper drive shaft (3) is fixedly connected with an upper drive bevel gear (54), the connecting portion of the lower drive shaft (6) and the connecting block (52) is provided with a lower positioning bearing (55), the end surface of the lower drive shaft (6) close to the upper drive bevel gear (54) is fixedly connected with a lower drive bevel gear (56), the inside of the connecting block (52) is fixedly provided with a fixed bearing (57), the inner ring of the fixed bearing (57) is fixedly connected with a rotating shaft (58), the end surface of the rotating shaft (58) is fixedly connected with a driven bevel gear (59), the surface of the driven bevel gear (59) is meshingly connected to the surfaces of the upper drive bevel gear (54) and the lower drive bevel gear (56), the inside of the lower drive shaft (6) is slidably connected with a positioning rod (510), the end surface of the positioning rod (510) is fixedly connected with a sliding block (511), the inside of the lower drive shaft (6) is threadedly connected with a bolt (512), and the end surface of the bolt (512) is fixedly connected with a rotating plate (5121).

2. A crystallization separation apparatus for fructose according to claim 1, characterized in that: The upper stirring rod (4) and the lower stirring rod (7) are both rotatably connected in the inside of the crystallization tank (1), the connecting portion of the upper drive shaft (3) and the connecting block (52) is provided with a sealing ring, and the connecting portion of the lower drive shaft (6) and the connecting block (52) is also provided with a sealing ring.

3. A crystallization separation apparatus for fructose as claimed in claim 1, characterized in that: The number of the fixed bearing (57), the rotating shaft (58) and the driven bevel gear (59) is two, the upper drive bevel gear (54) drives the lower drive bevel gear (56) to rotate through the driven bevel gear (59), and the rotating directions of the upper drive bevel gear (54) and the lower drive bevel gear (56) are opposite.

4. A crystallization separation apparatus for fructose as claimed in claim 1, characterized in that: The surface of the upper drive bevel gear (54) close to the driven bevel gear (59) is fixedly connected with a jack hole matched with the positioning rod (510), the positioning rod (510) is hexagonal, the outer surface of the sliding block (511) is slidably connected in the inside of the lower drive shaft (6), and the inside of the lower drive shaft (6) is provided with a sliding groove matched with the positioning rod (510).

5. A crystallization separation apparatus for fructose as claimed in claim 1, characterized in that: The outer surface of the rotating plate (5121) is rotatably connected in the inside of the bolt (512), the outer surface of the bolt (512) is slidably connected in the inside of the lower drive shaft (6), one end of the bolt (512) close to the rotating plate (5121) extends into the inside of the sliding block (511) and is rotatably connected in the inside of the sliding block (511).

6. A crystallization separation apparatus for fructose as claimed in claim 1, characterized in that: The surface of the connecting block (52) is arc-shaped, and the tail end of the bolt (512) extends to the bottom of the lower drive shaft (6).

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