Continuous dynamic gradient cooling crystallization apparatus for gluconolactone

Abstract

This invention discloses a continuous dynamic gradient cooling crystallization device for gluconolactone, comprising a cooling tank. Sealing plates are fixedly fitted onto the inner rings of both ends of the cooling tank. Several insulating plates fixed to the inner wall of the cooling tank are arranged between the two sealing plates, forming several chambers. An inner liner fixedly connected to the insulating plates is installed inside each chamber. A refrigeration pipe is installed between the cooling tank and the inner liner. A stirring mechanism is installed on the top sealing plate, and a filtration mechanism is installed on the insulating plates. This invention divides the cooling tank into multiple independent chambers through the insulating plates. Combined with the refrigeration pipe between the cooling tank and the inner liner, independent temperature control can be achieved for each chamber, forming a continuous gradient cooling environment. This design solves the problem of uncontrollable cooling gradient in traditional single-chamber cooling systems, allowing the gluconolactone solution to gradually and stably cool in each chamber, resulting in uniform supersaturation distribution and the formation of crystals with consistent particle size and regular morphology.

Description

Technical Field

[0001] This invention belongs to the field of gluconolactone crystallization technology, and particularly relates to a continuous dynamic gradient cooling crystallization device for gluconolactone. Background Technology

[0002] Gluconolactone is an important organic compound used in the pharmaceutical field as a drug excipient to adjust the pH value of medications, or as a laxative to promote defecation by increasing intestinal osmotic pressure. In the food industry, it is commonly used in the production of soy products such as tofu and dried tofu, replacing traditional gypsum or brine. Its function is to slowly release hydrogen ions, causing the proteins in soy milk to gradually coagulate, resulting in tofu with a delicate texture, smooth taste, and good water retention.

[0003] Existing cooling crystallization devices are mostly single-compartment designs, with the overall temperature changing synchronously during the cooling process. This makes it impossible to achieve dynamic gradient cooling, resulting in uneven distribution of supersaturation in the solution. This can easily lead to local crystallization that is too fast or too slow, ultimately resulting in crystals with large differences in particle size and irregular shapes. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0005] A continuous dynamic gradient cooling crystallization device for gluconolactone includes a cooling tank. Sealing plates are fixedly fitted around the inner rings of both ends of the cooling tank. Several insulation plates fixed to the inner wall of the cooling tank are arranged between the two sealing plates, forming several chambers. An inner liner fixedly connected to the insulation plates is installed inside each chamber. A refrigeration pipe is installed between the cooling tank and the inner liner. A stirring mechanism is installed on the top sealing plate, and a filtering mechanism is installed on the insulation plates.

[0006] As a preferred embodiment of the above technical solution, the stirring mechanism includes a mounting base fixed to the outside of the sealing plate, a motor fixedly connected to the mounting base, a stirring shaft fixedly connected to the output end of the motor, the stirring shaft passing through several insulation plates and rotatably connected to the sealing plate located at the bottom, and several stirring blades fixedly connected to the stirring shaft, the several stirring blades being evenly distributed in each chamber.

[0007] As a preferred embodiment of the above technical solution, the stirring blade is provided with a plurality of flow guiding channels, wherein the diameter of the end of the flow guiding channel located during rotation is larger than the diameter of the end located at the bottom.

[0008] As a preferred embodiment of the above technical solution, the filtration mechanism includes two mirror-arranged filter boxes, both of which are located within the through holes of the insulation plate and are detachably connected to the stirring shaft. A filter screen is fixedly connected to the bottom of each filter box.

[0009] As a preferred embodiment of the above technical solution, the filtration mechanism further includes a bolt that passes through the filter box and the stirring shaft, and the bolt is threaded with a nut that abuts against the filter box.

[0010] As a preferred embodiment of the above technical solution, the filter screen is fixedly connected to a blocking element.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model divides the cooling tank into multiple independent compartments using insulation plates. Combined with the refrigeration pipes between the cooling tank and the inner liner, each compartment can be independently temperature-controlled, forming a continuous gradient cooling environment. This design solves the problem of uncontrollable cooling gradient in traditional single-compartment cooling systems, allowing the glucono delta-lactone solution to cool gradually and stably in each compartment, resulting in uniform supersaturation distribution and the formation of crystals with consistent particle size and regular morphology.

[0013] 2. In the stirring mechanism of this utility model, the motor drives the stirring shaft to drive the stirring blades in each chamber to rotate synchronously, ensuring that the material in each chamber is cooled evenly. At the same time, the diameter of the rotating end of the guide channel opened by the stirring blade is larger than that of the bottom end, which generates a directional guiding effect when rotating, enhancing the longitudinal circulation flow of the material, reducing local temperature difference and concentration difference, and effectively avoiding crystal agglomeration.

[0014] 3. The filter mechanism of this utility model has a filter box set through the through hole of the heat insulation plate, which can intercept impurities in real time when the material flows from the upper chamber to the lower chamber. The filter screen and the blocking component can effectively intercept particulate impurities. In addition, the filter box and the stirring shaft can be detachably connected, which is convenient for regular cleaning or replacement, ensuring the stability of the filtration effect and solving the problem of impurity encapsulation caused by traditional offline filtration. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the continuous dynamic gradient cooling crystallization device for gluconolactone in the embodiment.

[0016] Figure 2 The diagram shown is a schematic representation of the structure of the stirring blade in the embodiment;

[0017] Figure 3 The diagram shown is a structural schematic of the filtration mechanism in the embodiment.

[0018] Explanation of reference numerals in the attached figures:

[0019] 10. Cooling tank; 11. Sealing plate; 12. Insulation plate; 13. Inner liner; 14. Refrigeration pipe; 20. Stirring mechanism; 21. Mounting base; 22. Motor; 23. Stirring shaft; 24. Stirring blade; 25. Flow guide channel; 30. Filtration mechanism; 31. Filter box; 32. Bolt; 33. Nut; 34. Blocking component; 35. Filter screen. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Example

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the gluconolactone continuous dynamic gradient cooling crystallization device includes a cooling tank 10. Both ends of the cooling tank 10 are fixedly fitted with sealing plates 11. Several insulation plates 12 fixed to the inner wall of the cooling tank 10 are arranged between the two sealing plates 11 to form several chambers. The inside of the chamber is provided with an inner liner 13 fixedly connected to the insulation plate 12. A refrigeration pipe 14 is arranged between the cooling tank 10 and the inner liner 13. A stirring mechanism 20 is installed on the top sealing plate 11, and a filter mechanism 30 is installed on the insulation plate 12.

[0023] Specifically, the basic framework of the device is constructed by dividing the cooling tank 10 into several independent compartments through the insulation plate 12, providing a structural basis for "continuous dynamic gradient cooling"; the sealing plate 11 seals both ends of the cooling tank 10 to prevent solution leakage; the refrigeration pipe 14 between the inner liner 13 and the cooling tank 10 provides an independent cold source for each compartment, and the temperature can be adjusted to form a gradient; at the same time, the installation positions of the stirring mechanism 20 and the filtration mechanism 30 are clearly defined, laying the foundation for subsequent improvement of mixing uniformity and impurity filtration function.

[0024] like Figure 1 As shown, the stirring mechanism 20 includes a mounting base 21 fixed on the outside of the sealing plate 11. A motor 22 is fixedly connected to the mounting base 21. A stirring shaft 23 is fixedly connected to the output end of the motor 22. The stirring shaft 23 passes through several insulation plates 12 and is rotatably connected to the sealing plate 11 located at the bottom. Several stirring blades 24 are fixedly connected to the stirring shaft 23. The several stirring blades 24 are evenly distributed in each chamber.

[0025] Specifically, the motor 22 provides power to drive the stirring shaft 23 to drive the stirring blades 24 in each chamber to rotate synchronously, ensuring that the gluconolactone solution in each chamber can be fully stirred, avoiding uneven crystallization speed caused by local temperature differences; the uniform distribution of the stirring blades 24 in each chamber can be adapted to the cooling environment of different chambers, ensuring the mixing effect of each layer of solution, and providing a guarantee for the consistency of particle size in subsequent crystallization.

[0026] like Figure 2 As shown, the stirring blade 24 has several guide channels 25, and the diameter of the guide channel 25 at the rotating end is larger than the diameter at the bottom end.

[0027] It should be noted that by utilizing the "variable diameter design" of the flow channel 25, when the stirring blade 24 rotates, the solution flows in from the larger diameter rotating end and flows out from the smaller diameter bottom end, forming a directional longitudinal flow effect, which enhances the vertical circulation of the solution in the chamber. This design can further eliminate local concentration differences and temperature differences in the solution, avoid excessive aggregation or growth of crystals in local areas, reduce agglomeration, and improve the regularity of crystal morphology.

[0028] like Figure 1 and Figure 3 As shown, the filtration mechanism 30 includes two mirror-arranged filter boxes 31. Both filter boxes 31 are located in the through holes of the insulation plate 12 and are detachably connected to the stirring shaft 23. A filter screen 35 is fixedly connected to the bottom of the filter box 31.

[0029] Specifically, the filter box 31 is located at the through hole of the insulation plate 12, which corresponds exactly to the path of the solution flowing from the upper chamber to the lower chamber, thus realizing "real-time online filtration".

[0030] The filter screen 35 can intercept particulate impurities in the solution, preventing impurities from entering the lower chamber and affecting the purity of subsequent crystallization. The detachable connection between the filter box 31 and the stirring shaft 23 makes it easy to disassemble and clean regularly according to usage, solving the problem of impurities being wrapped in crystals due to traditional offline filtration.

[0031] like Figure 3 As shown, the filter mechanism 30 also includes a bolt 32, which passes through the filter box 31 and the stirring shaft 23. The bolt 32 is threadedly connected to a nut 33 that abuts against the filter box 31.

[0032] Specifically, the bolts 32 and nuts 33 are used to achieve a stable connection between the filter box 31 and the stirring shaft 23, preventing the filter box 31 from shifting when the stirring shaft 23 rotates or the solution flows.

[0033] Meanwhile, the removability of the threaded connection allows for quick and easy disassembly and replacement of the filter box 31 or filter screen 35, reducing maintenance difficulty and ensuring long-term stability of the filtration effect.

[0034] like Figure 3 As shown, the filter 35 is fixedly connected to a blocking element 34.

[0035] It should be noted that when the stirring shaft 23 drives the filter box 31 to rotate, impurities will be thrown into the space between the filter box 31 and the blocking member 34 by centrifugal force, so as to prevent impurities from clogging the filter holes.

[0036] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A continuous dynamic gradient cooling crystallization apparatus for gluconolactone, characterized in that, The cooling tank (10) is provided with sealing plates (11) fixedly fitted on the inner rings of both ends of the cooling tank (10). Several heat insulation plates (12) fixed on the inner wall of the cooling tank (10) are provided between the two sealing plates (11) to form several chambers. The chambers are provided with inner linings (13) fixedly connected to the heat insulation plates (12). A refrigeration pipe (14) is provided between the cooling tank (10) and the inner lining (13). A stirring mechanism (20) is installed on the top sealing plate (11), and a filter mechanism (30) is installed on the heat insulation plate (12).

2. The gluconolactone continuous dynamic gradient cooling crystallization apparatus according to claim 1, characterized in that, The stirring mechanism (20) includes a mounting base (21) fixed on the outside of the sealing plate (11). The mounting base (21) is fixedly connected to a motor (22). The output end of the motor (22) is fixedly connected to a stirring shaft (23). The stirring shaft (23) passes through several insulation plates (12) and is rotatably connected to the sealing plate (11) at the bottom. The stirring shaft (23) is fixedly connected to several stirring blades (24). The several stirring blades (24) are evenly distributed in each chamber.

3. The continuous dynamic gradient cooling crystallization apparatus of gluconolactone according to claim 2, characterized in that, The stirring blade (24) has several guide channels (25), and the diameter of the guide channel (25) at the rotating end is larger than the diameter at the bottom end.

4. The continuous dynamic gradient cooling crystallization apparatus of gluconolactone according to claim 2, characterized in that, The filtration mechanism (30) includes two mirror-arranged filter boxes (31), both of which are located in the through holes of the insulation plate (12) and are detachably connected to the stirring shaft (23). A filter screen (35) is fixedly connected to the bottom of each filter box (31).

5. The continuous dynamic gradient cooling crystallization apparatus of gluconolactone according to claim 4, characterized in that, The filtration mechanism (30) also includes a bolt (32) that passes through the filter box (31) and the stirring shaft (23), and the bolt (32) is threaded with a nut (33) that abuts against the filter box (31).

6. The continuous dynamic gradient cooling crystallization apparatus of gluconolactone according to claim 4, characterized in that, The filter (35) is fixedly connected to a blocking element (34).

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