Concentration and crystallization equipment and method for preparing psicose

Abstract

The invention discloses concentration and crystallization equipment and method for preparing psicose, belongs to the technical field of psicose preparation, solves the problem that materials in an existing crystallizer cannot be in full contact with a condensing agent conveying pipeline, and comprises a crystallizer body, a feeding channel, a material output piece and a steam collecting pipe. According to the crystallizer, the cooling mechanism and the control mechanism are arranged, so that the materials can be stably cooled, crystallization of the materials is assisted, the contact area of the materials and a conveying condenser pipeline is enlarged, the number of the cooling pieces is two, and therefore the cooling effect is improved. According to the high-efficiency psicose crystallization crystallizer, materials are cooled step by step, the cooling effect of the equipment is guaranteed, the flow speed of the materials in the crystallizer body can be controlled subsequently by adjusting the distance between the sealing baffle ring and the sealing cone plate, stable cooling of the materials is assisted, efficient psicose crystallization treatment is achieved, and the working quality of the equipment is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of psicose production, and particularly relates to concentrated crystallization equipment and a method for preparing psicose. Background Art

[0002] Allulose is classified as a hexose and a ketose. It is the diastereomer corresponding to the third carbon of D-fructose. It has special functions such as regulating blood sugar, which is beneficial to human health. It is currently regarded as the most promising sucrose substitute. The production process of allulose requires multiple steps, among which concentrated crystallization is a very critical step. Generally, a special crystallizer is used to process the material.

[0003] Existing crystallizers are divided into many types according to the type of processing. The most common one is a crystallizer that uses a condensing agent to cool the material to achieve crystallization. However, there are certain problems with the current crystallizers when in use. Specifically, when in use, the material is allowed to flow along the surface of a pipe equipped with a condensing agent, and the material is cooled during the flow. However, the contact area between the material and the pipe is too small and the contact time is too short. The material needs to be repeatedly circulated and input into the crystallizer, which affects the overall working time and reduces the overall working efficiency of the equipment. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In order to solve the problems raised in the above background technology, the present invention adopts the following technical solutions.

[0006] A concentrated crystallization device for preparing allulose comprises a crystallizer body, a feed channel, a material output piece and a steam collecting pipe, wherein a feed channel for conveying processed materials is installed on one side of the outside of the crystallizer body, a steam collecting pipe for collecting steam emitted by the materials is installed on the side of the outside of the crystallizer body opposite to the feed channel, a material output piece for conveying crystallized materials is installed at the bottom end of the crystallizer body, a cooling mechanism for gradually cooling the materials and assisting crystallization is installed inside the crystallizer body, the cooling mechanism comprises a feed main pipe, a first cooling piece and a second cooling piece, the feed main pipe is installed on the side of the crystallizer body, the first cooling piece is fixedly installed inside the crystallizer body, and the feed main pipe is communicated with the first cooling piece, the second cooling piece is installed inside the crystallizer body, and the second cooling piece is arranged on the first cooling piece, the first cooling piece and the second cooling piece are communicated with each other through a pipeline, and a control mechanism for controlling the material flow rate is installed inside the crystallizer body.

[0007] As a preferred technical solution of the present invention, the cooling mechanism also includes an output pipe for outputting the condensing agent, and a control valve is installed outside the output pipe, and the output pipe is connected to the top outlet of the second cooling component.

[0008] As a preferred technical solution of the present invention, the first cooling component includes a lower bottom plate, a condensation delivery pipe and an upper top plate, the lower bottom plate and the upper top plate are arranged inside the crystallizer body, and a plurality of groups of interconnected condensation delivery pipes for conveying condensing agent are installed between the lower bottom plate and the upper top plate, and the positions of the plurality of groups of condensation delivery pipes are parallel.

[0009] As a preferred technical solution of the present invention, a rotating groove for assisting the rotation of subsequent components is opened inside the first cooling component, two sets of lifting grooves are opened inside the first cooling component, and the rotating groove and the lifting groove both penetrate the lower bottom plate and the upper top plate at the same time, and the first cooling component and the second cooling component have the same structure.

[0010] As a preferred technical solution of the present invention, the control mechanism includes an electric push rod, a lifting connecting rod and a closing assembly. The electric push rod is installed on the upper surface of the crystallizer body. There are two groups of electric push rods. The lifting connecting rod is fixedly installed on the output end of the electric push rod. The lifting connecting rod is slidably connected to the lifting slot. The closing assembly is installed on the outside of the lifting connecting rod, and there are two groups of closing assemblies.

[0011] As a preferred technical solution of the present invention, the closing component includes a sealing cone plate, a sealing baffle ring and a sealing portion. The sealing cone plate is fixedly installed at the bottom end of the lifting connecting rod, and the sealing cone plate slides up and down inside the crystallizer body. The sealing baffle ring is fixedly installed inside the crystallizer body. A sealing portion is provided at the end of the sealing baffle ring, and the sealing portion is fitted with the sealing cone plate. A plurality of anti-blocking rods are equidistantly fixedly installed on the upper surface of one group of sealing cone plates.

[0012] As a preferred technical solution of the present invention, there are two groups of closing components, one group of closing components is arranged above the cooling mechanism, and the other group is arranged below the cooling mechanism.

[0013] As a preferred technical solution of the present invention, the concentration and crystallization equipment also includes a stirring mechanism for stirring the internal material, the stirring mechanism includes a driving motor, a driving connecting rod, a first stirring rod, a second stirring rod and a cleaning assembly, the driving motor is fixedly mounted on the upper surface of the crystallizer body, the driving connecting rod is rotatably mounted inside the crystallizer body, the end of the driving connecting rod is fixedly connected to the output end of the driving motor, the first stirring rod and the second stirring rod are respectively mounted on the outside of the driving connecting rod, and the cleaning assembly is fixedly mounted on the end of the driving connecting rod.

[0014] As a preferred technical solution of the present invention, the cleaning assembly includes a cleaning rotary block and a cleaning inclined plate. The cleaning rotary block is fixedly installed on the end of the driving connecting rod, and the cleaning inclined plate is equidistantly fixed on the side of the cleaning rotary block. The cleaning inclined plate slides against the inner wall of the bottom end of the crystallizer body.

[0015] A concentrated crystallization method for preparing psicose, comprising the following steps: S1. Material transportation: the material to be processed is input into the main body of the crystallizer through the use of the feed channel, and the steam collection pipe can collect the steam emitted during the subsequent processing and transportation of the material; S2, cooling and crystallization, by using the feed main pipe, the condensing agent is input into the first cooling member and the second cooling member, and the first cooling member and the second cooling member are provided with material flow grooves, and the material gradually passes through the second cooling member and the first cooling member to remove the heat inside the material, and the second cooling member and the first cooling member are provided with multiple groups of condensation conveying pipes for cooling, which can effectively expand the contact area between the material and the pipeline with the condensing agent; S3, control the flow rate. Use the control mechanism according to the temperature and condition of the material itself. The electric push rod will automatically run to push the lifting connecting rod to rise and fall inside the crystallizer body. By adjusting the spacing between the sealing cone plate and the sealing baffle ring, the size of the gap for material transportation and circulation is adjusted to adjust the material transportation flow rate inside the crystallizer body. When the sealing baffle ring and the sealing cone plate are fully fitted, the space between the two sets of closed components is in a sealed state. At this time, the material will accumulate between the two sets of closed components and cannot flow. At this time, the cooling mechanism can stably remove the heat inside the material to assist the crystallization of the material. S4, stirring and cleaning, through the operation of the driving motor and the driving connecting rod, the first stirring rod and the second stirring rod stably rotate inside the crystallizer body, at this time, the first stirring rod and the second stirring rod can stir the material, so that the material can fully fit with the internal components of the cooling mechanism, and strengthen the cooling effect of the cooling mechanism itself. Subsequently, the crystallized material at the bottom of the crystallizer body is cleaned by the cooperation and rotation of the cleaning inclined plate to prevent the material from adhering to the bottom part of the inner wall of the crystallizer body, so as to facilitate the output of the crystallized material; S5. Output and Collection Through the use of material output parts, the crystallized materials are collected and discharged, and the collection of materials is completed quickly.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by providing a cooling mechanism and a control mechanism, the material can be stably cooled, the material crystallization is assisted, and the contact surface between the material and the conveying condenser pipeline is expanded. Two groups of cooling components are provided to perform step-by-step cooling on the material, thereby ensuring the cooling effect of the equipment itself. Subsequently, the distance between the sealing baffle ring and the sealing cone plate can be adjusted to control the flow rate of the material inside the crystallizer body, thereby assisting the material in stable cooling, achieving efficient allulose crystallization processing, and ensuring the working quality of the equipment itself.

[0017] In the present invention, by setting up a stirring mechanism, the material inside the crystallizer body can be stirred stably, the material can be assisted to cool down and the flow direction and flow path of the material itself can be changed, thereby ensuring the working quality of the equipment itself. Finally, the material at the material output port can be cleaned to prevent the material from adhering to the inner wall of the crystallizer after crystallization, thereby ensuring the purity of the equipment itself and improving the working quality of the equipment itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention.

[0019] Figure 2 It is a sectional stereoscopic view of the crystallizer body of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the cooling mechanism in the present invention.

[0021] Figure 4 It is a structural schematic diagram of the first cooling component in the present invention.

[0022] Figure 5 It is a structural schematic diagram of the control mechanism and the crystallizer body in the present invention.

[0023] Figure 6 It is a structural schematic diagram of the control mechanism in the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the closing component in the present invention.

[0025] Figure 8 It is a structural schematic diagram of the stirring mechanism in the present invention.

[0026] Fig. 9 It is a schematic diagram of the structure of the cleaning component in the present invention.

[0027] The corresponding relationship between the illustrations and component names in the figure is as follows: 1. Crystallizer body; 2. Feed channel; 3. Material output part; 4. Steam collecting pipe; 5. Cooling mechanism; 51. Feed main pipe; 52. First cooling part; 521. Lower bottom plate; 522. Condensation conveying pipe; 523. Upper top plate; 524. Rotating groove; 525. Lifting groove; 53. Second cooling part; 54. Output pipeline; 6. Control mechanism; 61. Electric push rod; 62. Lifting connecting rod; 63. Closing assembly; 631. Sealing cone plate; 632. Sealing baffle ring; 633. Sealing part; 634. Anti-blocking rod; 7. Stirring mechanism; 71. Driving motor; 72. Driving connecting rod; 73. First stirring rod; 74. Second stirring rod; 75. Cleaning assembly; 751. Cleaning rotating block; 752. Cleaning inclined plate. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0031] Depend on Figure 1 and Figure 2 As shown, it is a structural schematic diagram of the concentrated crystallization equipment for preparing allulose in this embodiment, including a crystallizer body 1, a feed channel 2, a material output piece 3 and a steam collecting pipe 4, wherein the feed channel 2 for conveying processed materials is installed on one side of the outside of the crystallizer body 1, and a steam collecting pipe 4 for collecting steam emitted by the material is installed on the side of the outside of the crystallizer body 1 opposite to the feed channel 2, and a material output piece 3 for conveying crystallized materials is installed at the bottom end of the crystallizer body 1, and a cooling mechanism 5 for gradually cooling the material and assisting crystallization is installed inside the crystallizer body 1, and a control mechanism 6 for controlling the flow rate of the material is installed inside the crystallizer body 1.

[0032] During use, the material to be crystallized is input into the crystallizer body 1 through the feed channel 2, and then the material is cooled by the cooling mechanism 5 to achieve crystallization. When the material flows inside the crystallizer body 1, the flow rate of the material inside the crystallizer body 1 can be controlled by the control mechanism 6 to ensure that the material can stably exchange heat with the condensing agent to achieve cooling and crystallization, thereby ensuring the stability of the equipment during operation. During operation, the steam generated during the crystallization of the material is collected by the steam collection pipe 4, which is convenient for subsequent processing and recycling, thereby ensuring the working quality of the equipment itself.

[0033] By the attached Figure 3 As shown, it is a structural schematic diagram of the cooling mechanism 5 in this embodiment, the cooling mechanism 5 includes a feed main pipe 51, a first cooling component 52, a second cooling component 53 and an output pipe 54, the feed main pipe 51 is installed on the side of the crystallizer body 1, the first cooling component 52 is fixedly installed inside the crystallizer body 1, and the feed main pipe 51 is connected to the first cooling component 52, the second cooling component 53 is installed inside the crystallizer body 1, and the second cooling component 53 is arranged on the first cooling component 52, the first cooling component 52 and the second cooling component 53 are connected through a pipeline, the output pipe 54 is installed at the top outlet of the second cooling component 53, and a control valve is installed outside the output pipe 54.

[0034] During use, the feed main pipe 51 is used to input the refrigerant required for material crystallization into the first cooling component 52 and the second cooling component 53. The first cooling component 52 and the second cooling component 53 are used to cool the material step by step to reduce the temperature of the material itself so that the material eventually forms corresponding crystals, thereby expanding the contact area between the material and the refrigerant conveying pipeline and making the cooling effect of the material more efficient.

[0035] By the attached Figure 4 As shown, it is a structural schematic diagram of the first cooling component 52 in this embodiment, the first cooling component 52 includes a lower bottom plate 521, a condensation delivery pipe 522 and an upper top plate 523, the lower bottom plate 521 and the upper top plate 523 are arranged inside the crystallizer body 1, and a plurality of groups of connected condensation delivery pipes 522 for conveying refrigerant are installed between the lower bottom plate 521 and the upper top plate 523, and the plurality of groups of condensation delivery pipes 522 are positioned in parallel.

[0036] During use, the condensing agent is transported through the condensing conveying pipe 522. When the material enters the first cooling component 52, the material flows in the gaps left between the condensing conveying pipes 522, thereby expanding the contact area between the material and the condensing conveying pipes 522, making the cooling effect more significant. The condensing agent can flow through the pipeline between the first cooling component 52 and the second cooling component 53, thereby realizing step-by-step cooling of the material, thereby ensuring the working quality of the equipment itself.

[0037] By the attached Figure 4 As shown, a rotating groove 524 for assisting the rotation of subsequent components is opened inside the first cooling component 52, and two sets of lifting grooves 525 are opened inside the first cooling component 52, and the rotating groove 524 and the lifting groove 525 both penetrate the lower bottom plate 521 and the upper top plate 523 at the same time. The first cooling component 52 and the second cooling component 53 have the same structure.

[0038] During use, the opening of the rotating groove 524 facilitates the subsequent components to rotate inside the first cooling component 52 or the second cooling component 53, and the opening and coordination of the lifting groove 525 facilitates the control mechanism 6 to slide up and down inside the lifting groove 525 to adjust the flow rate of the material inside the crystallizer body 1, thereby ensuring the stability of the equipment during operation.

[0039] By the attached Figure 5 and Figure 6 As shown, it is a structural schematic diagram of the control mechanism 6 in this embodiment, the control mechanism 6 includes an electric push rod 61, a lifting connecting rod 62 and a closing assembly 63, the electric push rod 61 is installed on the upper surface of the crystallizer body 1, and there are two groups of electric push rods 61. The lifting connecting rod 62 is fixedly installed at the output end of the electric push rod 61, and the lifting connecting rod 62 is slidably connected to the lifting slot 525. The closing assembly 63 is installed outside the lifting connecting rod 62, and there are two groups of closing assemblies 63.

[0040] During use, the electric push rod 61 is used to make the lifting connecting rod 62 slide up and down inside the crystallizer body 1, driving the closing component 63 to operate and move, and adjusting the size of the material flow hole groove inside the closing component 63 to control the flow rate of the material. When the cooling effect of the material does not meet the standard, the area between the closing components 63 inside the crystallizer body 1 is closed by completely closing the closing component 63, so that the material can be temporarily retained in the area. The material in the area can stably contact the pipeline for conveying the condensing agent, thereby improving the cooling effect of the equipment itself and assisting the crystallization of the material.

[0041] By the attached Figure 7As shown, it is a structural schematic diagram of the closing component 63 in this embodiment, the closing component 63 includes a sealing cone plate 631, a sealing retaining ring 632 and a sealing portion 633, the sealing cone plate 631 is fixedly installed at the bottom end of the lifting connecting rod 62, the sealing cone plate 631 slides up and down inside the crystallizer body 1, the sealing retaining ring 632 is fixedly installed inside the crystallizer body 1, and a sealing portion 633 is provided at the end of the sealing retaining ring 632, the sealing portion 633 is fitted with the sealing cone plate 631, and a plurality of anti-blocking rods 634 are equidistantly fixedly installed on the upper surface of one group of the sealing cone plates 631.

[0042] When in use, the sealing cone plate 631 moves synchronously inside the crystallizer body 1 by sliding the lifting connecting rod 62 up and down. At this time, the distance between the sealing cone plate 631 and the sealing baffle ring 632 changes with the movement distance of the lifting connecting rod 62. The size of the gap between the sealing cone plate 631 and the sealing baffle ring 632 is adjusted to control the flow rate of the material. The setting of the sealing portion 633 allows the sealing baffle ring 632 and the sealing cone plate 631 to fit completely, thereby sealing the entire space and blocking the area between the closed components 63. This allows the material to accumulate stably in the area and better receive cooling and crystallization treatment. When the sealing cone plate 631 moves toward the side close to the cooling mechanism 5, the anti-blocking rod 634 enters the cooling mechanism 5 to clear the cooling mechanism 5, thereby preventing the slot for the material flow inside the cooling mechanism 5 from being blocked, thereby ensuring the stability of the components during operation.

[0043] By the attached Figure 5 As shown, there are two groups of closing components 63 , one group of closing components 63 is arranged above the cooling mechanism 5 , and the other group is arranged below the cooling mechanism 5 .

[0044] During use, the design of the position of the closing component 63 can control the retention area of ​​the material, allowing the material to be temporarily stored between the closing components 63, so that it can better contact and fit with the cooling mechanism 5, remove the heat inside the material, realize the crystallization process of the material itself, and ensure the working quality of the equipment itself.

[0045] By the attached Figure 8 As shown, it is a structural schematic diagram of the stirring mechanism 7 in this embodiment. The concentrated crystallization equipment also includes a stirring mechanism 7 for stirring the internal material. The stirring mechanism 7 includes a driving motor 71, a driving connecting rod 72, a first stirring rod 73, a second stirring rod 74 and a cleaning assembly 75. The driving motor 71 is fixedly mounted on the upper surface of the crystallizer body 1, the driving connecting rod 72 is rotatably mounted inside the crystallizer body 1, the end of the driving connecting rod 72 is fixedly connected to the output end of the driving motor 71, the first stirring rod 73 and the second stirring rod 74 are respectively mounted on the outside of the driving connecting rod 72, and the cleaning assembly 75 is fixedly mounted on the end of the driving connecting rod 72.

[0046] During use, the driving motor 71 drives the driving connecting rod 72 to rotate through the driving and operation of the stirring mechanism 7. At this time, the first stirring rod 73 and the second stirring rod 74 rotate inside the crystallizer body 1, stirring the material around the first stirring rod 73 and the second stirring rod 74, changing the flow trajectory of the material, allowing the material to better fit with the internal components of the cooling mechanism 5, and the cooling effect is more stable. In addition, with the stirring of the second stirring rod 74 and the first stirring rod 73, part of the material can be prevented from adhering to the surface of the cooling mechanism 5 after crystallization, thereby assisting the stable flow of the material.

[0047] By the attached Fig. 9 As shown, the cleaning assembly 75 includes a cleaning rotary block 751 and a cleaning inclined plate 752. The cleaning rotary block 751 is fixedly mounted at the end of the driving connecting rod 72, and the cleaning inclined plate 752 is equidistantly fixedly mounted on the side of the cleaning rotary block 751. The cleaning inclined plate 752 slides against the inner wall of the bottom end of the crystallizer body 1. During use, driven by the driving connecting rod 72, the cleaning rotary block 751 drives the cleaning inclined plate 752 to stir in the bottom end area inside the crystallizer body 1, and cleans the material attached to the inner wall of the crystallizer body 1, allowing the material to be stably discharged through the material output piece 3, thereby ensuring the integrity of the material collection and the purity of the inner wall area of ​​the crystallizer body 1.

[0048] By the attached Figures 1 to 9 As shown, a concentrated crystallization method for preparing psicose comprises the following steps: S1, material transportation, through the use of the feed channel 2, the material to be processed is input into the inside of the crystallizer body 1, and the steam collection pipe 4 can collect the steam emitted during the subsequent processing and transportation of the material; S2, cooling and crystallization, by using the feed main pipe 51, the condensing agent is input into the first cooling member 52 and the second cooling member 53, and the first cooling member 52 and the second cooling member 53 are provided with material flow grooves, and the material gradually passes through the second cooling member 53 and the first cooling member 52, and the heat inside the material is removed, and the second cooling member 53 and the first cooling member 52 are provided with multiple groups of condensation conveying pipes 522 for cooling, which can effectively expand the contact area between the material and the pipeline with the condensing agent; S3, control the flow rate, use the control mechanism 6 according to the temperature and situation of the material itself, the electric push rod 61 will automatically run, push the lifting connecting rod 62 to rise and fall inside the crystallizer body 1, and adjust the gap size for material transportation and circulation by adjusting the spacing between the sealing cone plate 631 and the sealing baffle ring 632, so as to adjust the material transportation flow rate inside the crystallizer body 1, and when the sealing baffle ring 632 is completely fitted with the sealing cone plate 631, the space between the two sets of closed components 63 is in a sealed state, and the material will accumulate between the two sets of closed components 63 and cannot flow. At this time, the cooling mechanism 5 can stably remove the heat inside the material to assist the crystallization of the material; S4, stirring and cleaning. Driven by the operation of the driving motor 71 and the driving connecting rod 72, the first stirring rod 73 and the second stirring rod 74 rotate stably inside the crystallizer body 1. At this time, the first stirring rod 73 and the second stirring rod 74 can stir the material, so that the material can fully fit with the internal components of the cooling mechanism 5, and strengthen the cooling effect of the cooling mechanism 5 itself. Subsequently, the crystallized material at the bottom of the crystallizer body 1 is cleaned by the cooperation and rotation of the cleaning inclined plate 752 to prevent the material from adhering to the bottom part of the inner wall of the crystallizer body 1, so as to facilitate the output of the crystallized material; S5. Output and Collection The crystallized material is collected and discharged by using the material output part 3, and the collection of the material is completed quickly.

[0049] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A concentrated crystallization device for preparing allulose, comprising a crystallizer body (1), a feed channel (2), a material output piece (3) and a steam collecting pipe (4), wherein the feed channel (2) for conveying processed materials is installed on one side of the outside of the crystallizer body (1), a steam collecting pipe (4) for collecting steam emitted by the materials is installed on the side of the outside of the crystallizer body (1) opposite to the feed channel (2), and a material output piece (3) for conveying crystallized materials is installed at the bottom end of the crystallizer body (1), characterized in that: A cooling mechanism (5) for gradually cooling the material and assisting crystallization is installed inside the crystallizer body (1). The cooling mechanism (5) comprises a feed pipe (51), a first cooling component (52) and a second cooling component (53). The feed pipe (51) is installed on the side of the crystallizer body (1). The first cooling component (52) is fixedly installed inside the crystallizer body (1), and the feed pipe (51) is connected to the first cooling component (52). The second cooling component (53) is installed inside the crystallizer body (1), and the second cooling component (53) is arranged on the first cooling component (52). The first cooling component (52) and the second cooling component (53) are connected via a pipeline. A control mechanism (6) for controlling the flow rate of the material is installed inside the crystallizer body (1).

2. The concentrated crystallization device for preparing D-psicose according to claim 1, characterized in that: The cooling mechanism (5) further comprises an output pipe (54) for outputting the condensing agent, and a control valve is installed outside the output pipe (54), and the output pipe (54) is connected to the top outlet of the second cooling component (53).

3. The concentrated crystallization device for preparing D-psicose according to claim 2, characterized in that: The first cooling component (52) comprises a lower bottom plate (521), a condensation delivery pipe (522) and an upper top plate (523), wherein the lower bottom plate (521) and the upper top plate (523) are arranged inside the crystallizer body (1), and a plurality of groups of interconnected condensation delivery pipes (522) for delivering condensing agents are installed between the lower bottom plate (521) and the upper top plate (523), and the plurality of groups of condensation delivery pipes (522) are arranged in parallel.

4. The concentrated crystallization device for preparing D-psicose according to claim 3, characterized in that: The first cooling component (52) is provided with a rotation groove (524) for assisting subsequent components to rotate. The first cooling component (52) is provided with two sets of lifting grooves (525). The rotation groove (524) and the lifting grooves (525) both penetrate the lower bottom plate (521) and the upper top plate (523). The first cooling component (52) and the second cooling component (53) have the same structure.

5. The concentrated crystallization device for preparing D-psicose according to claim 4, characterized in that: The control mechanism (6) comprises an electric push rod (61), a lifting connecting rod (62) and a closing assembly (63); the electric push rod (61) is mounted on the upper surface of the crystallizer body (1); two groups of electric push rods (61) are provided; the lifting connecting rod (62) is fixedly mounted on the output end of the electric push rod (61); the lifting connecting rod (62) is slidably connected to the lifting slot (525); and the closing assembly (63) is mounted on the outside of the lifting connecting rod (62); and two groups of closing assembly (63) are provided.

6. The concentrated crystallization device for preparing D-psicose according to claim 5, characterized in that: The closing assembly (63) comprises a sealing cone plate (631), a sealing retaining ring (632), a sealing portion (633) and an anti-blocking rod (634); the sealing cone plate (631) is fixedly mounted at the bottom end of the lifting connecting rod (62); the sealing cone plate (631) slides up and down inside the crystallizer body (1); the sealing retaining ring (632) is fixedly mounted inside the crystallizer body (1); a sealing portion (633) is provided at the end of the sealing retaining ring (632); the sealing portion (633) is fitted with the sealing cone plate (631); and a plurality of anti-blocking rods (634) are equidistantly fixedly mounted on the upper surface of one of the sealing cone plates (631).

7. The concentrated crystallization device for preparing D-psicose according to claim 6, characterized in that: The closing components (63) are provided in two groups, one group of closing components (63) is provided above the cooling mechanism (5), and the other group is provided below the cooling mechanism (5).

8. The concentrated crystallization device for preparing D-psicose according to claim 1, characterized in that: The concentrated crystallization device further comprises a stirring mechanism (7) for stirring the internal material, the stirring mechanism (7) comprising a driving motor (71), a driving connecting rod (72), a first stirring rod (73), a second stirring rod (74) and a cleaning assembly (75), wherein the driving motor (71) is fixedly mounted on the upper surface of the crystallizer body (1), the driving connecting rod (72) is rotatably mounted inside the crystallizer body (1), the end of the driving connecting rod (72) is fixedly connected to the output end of the driving motor (71), the first stirring rod (73) and the second stirring rod (74) are respectively mounted outside the driving connecting rod (72), and the cleaning assembly (75) is fixedly mounted on the end of the driving connecting rod (72).

9. The concentrated crystallization device for preparing D-psicose according to claim 8, characterized in that: The cleaning assembly (75) comprises a cleaning rotating block (751) and a cleaning inclined plate (752); the cleaning rotating block (751) is fixedly mounted on the end of the driving connecting rod (72); the cleaning inclined plate (752) is fixedly mounted at equal distances on the side of the cleaning rotating block (751); and the cleaning inclined plate (752) slides against the inner wall of the bottom end of the crystallizer body (1).

10. A concentrated crystallization method for preparing psicose, using the crystallization device according to any one of claims 1 to 9, characterized in that: The steps are as follows: S1. Material transportation: the material to be processed is fed into the interior of the crystallizer body (1) through the use of the feed channel (2), and the steam collection pipe (4) can collect the steam emitted during the subsequent processing and transportation of the material; S2, cooling and crystallization, by using the feed main pipe (51), the condensing agent is input into the first cooling element (52) and the second cooling element (53), and the first cooling element (52) and the second cooling element (53) are provided with material flow grooves, so that the material gradually passes through the second cooling element (53) and the first cooling element (52), and the heat inside the material is removed, and the second cooling element (53) and the first cooling element (52) are provided with a plurality of groups of condensation conveying pipes (522) for cooling; S3, controlling the flow rate, using the control mechanism (6) according to the temperature and condition of the material itself, the electric push rod (61) will automatically operate, push the lifting connecting rod (62) to rise and fall inside the crystallizer body (1), and adjust the size of the gap for material transportation and circulation by adjusting the distance between the sealing cone plate (631) and the sealing retaining ring (632), so as to adjust the conveying flow rate of the material inside the crystallizer body (1), and when the sealing retaining ring (632) and the sealing cone plate (631) are completely fitted, the space between the two sets of closed components (63) is in a sealed state, and the material will accumulate between the two sets of closed components (63) and cannot flow. At this time, the cooling mechanism (5) can stably remove the heat inside the material; S4, stirring and cleaning, by the operation of the driving motor (71) and the driving connecting rod (72), the first stirring rod (73) and the second stirring rod (74) stably rotate inside the crystallizer body (1), and the first stirring rod (73) and the second stirring rod (74) can stir the material, and by the cooperation and rotation of the cleaning inclined plate (752), the crystallized material at the bottom of the crystallizer body (1) is cleaned; S5. Output and Collection The crystallized material is collected and discharged by using the material output part (3).

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