D-alanine purification and preparation stirring equipment

Abstract

This utility model relates to the field of stirring technology and discloses a stirring device for the purification and preparation of D-alanine, including a stirring tank. A feed pipe is fixedly connected inside the stirring tank, and a stirring assembly is installed inside the stirring tank. The stirring assembly includes a support frame, the bottom of which is fixedly connected to the top of the stirring tank. A motor is fixedly connected inside the support frame, and a stirring rod is fixedly connected to the output end of the motor. A stirring blade is fixedly connected to the outer wall of the stirring rod, and multiple slots are formed inside the stirring blade. A connecting rod is fixedly connected to the outer wall of the stirring blade. In this utility model, the motor drives the stirring rod to rotate, further causing a scraper to scrape against the inner wall of the stirring tank. The elastic deformation of a spring ensures that the scraper fits tightly against the inner wall of the stirring tank, thereby effectively cleaning the inner wall of the stirring tank. This solves the problem of decreased crystal purity caused by the accumulation of adhering substances on the wall, and improves the cleaning efficiency of the crystallization tank and the product yield.

Description

Technical Field

[0001] This utility model relates to the field of stirring technology, and in particular to a stirring device for the purification and preparation of D-alanine. Background Technology

[0002] D-alanine, as an important chiral amino acid, is widely used in pharmaceuticals, food additives, and cosmetics. Its high-purity preparation places stringent requirements on the functionality and stability of equipment. As the core device in the fermentation, enzyme catalysis, and crystallization stages of D-alanine production, the stirring equipment directly affects the product yield, purity, and production efficiency. With the development of biotechnology, new processes such as genetically engineered bacterial fermentation and enzymatic resolution are gradually becoming more widespread, leading to continuous increases in the performance requirements of stirring equipment in terms of mass transfer efficiency, impurity control, and crystal form regulation.

[0003] Currently, traditional D-alanine purification and preparation equipment mostly employs conventional mechanical stirring structures. During the fermentation stage, turbine or propeller-type stirring paddles are used to mix materials, and jacketed temperature control maintains reaction conditions. Magnetic stirring is used in the enzyme catalysis process to minimize the impact on enzyme activity. Anchor-type stirring paddles are used in the crystallization stage to promote crystal growth. The technical principles of these devices are primarily based on fluid dynamics mixing, achieving uniform material dispersion and heat transfer through mechanical motion. However, parameter control relies on empirical settings and lacks precise response to process details.

[0004] However, existing stirring equipment has significant shortcomings when facing the complex requirements of D-alanine purification. During the crystallization stage, due to the lack of effective anti-adhesion measures, localized supersaturated areas easily form on the tank wall, leading to the generation of a large number of irregular crystal nuclei. These nuclei not only affect the uniform growth of crystals in the main solution, resulting in large differences in crystal morphology and reduced purity, but also continuously accumulate on the wall to form stubborn scale, hindering heat transfer efficiency, increasing cleaning difficulty and equipment wear, ultimately leading to a decrease in product yield and an increase in production costs. Therefore, a stirring equipment for D-alanine purification and preparation is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a stirring device for the purification and preparation of D-alanine, which aims to improve the problems of irregular crystal nucleus formation, reduced crystal purity, and difficulty in cleaning the equipment caused by the lack of effective anti-adhesion measures on the tank wall during the crystallization stage of existing stirring devices for the purification and preparation of D-alanine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The D-alanine purification and preparation stirring equipment includes a stirring tank, a feed pipe fixedly connected inside the stirring tank, and a stirring component installed inside the stirring tank;

[0008] The stirring assembly includes a support frame, the bottom of which is fixedly connected to the top of the stirring tank. A motor is fixedly connected inside the support frame, and a stirring rod is fixedly connected to the output end of the motor. A stirring blade is fixedly connected to the outer wall of the stirring rod. Multiple slots are formed inside the stirring blade, and a connecting rod is fixedly connected to the outer wall of the stirring blade. A spring is provided at both ends of the connecting rod. One end of the spring is fixedly connected to one end of the connecting rod, and the other end is fixedly connected to a scraper. One side of the scraper is in contact with the inner wall of the stirring tank. The scraper is made of rubber. A filter assembly is provided inside the feed pipe.

[0009] As a further description of the above technical solution:

[0010] The filter assembly includes a filter screen and a fixing frame. The filter screen is slidably connected inside the feed pipe, and one side of the fixing frame is fixedly connected to the outer wall of the filter screen.

[0011] As a further description of the above technical solution:

[0012] The fixed frame has a support plate fixedly connected inside, and a retractable rod is fixedly connected to both sides of the support plate.

[0013] As a further description of the above technical solution:

[0014] The feed tube has a limiting groove inside, and one end of the shrink rod is fixedly connected to an extrusion plate.

[0015] As a further description of the above technical solution:

[0016] One end of the extrusion disc is fixedly connected to a locking shaft, which engages with the limiting groove.

[0017] As a further description of the above technical solution:

[0018] A lever is fixedly connected to the outer wall of the extrusion disc, and a spring is provided on the outer wall of the retraction rod.

[0019] As a further description of the above technical solution:

[0020] One end of the spring is fixedly connected to the side wall of the extrusion disc, and the other end is fixedly connected to the side wall of the support plate.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the stirring rod is driven by a motor to rotate, which in turn drives the scraper to scrape against the inner wall of the mixing tank. The elastic deformation of the spring makes the scraper fit tightly against the inner wall of the mixing tank, thereby achieving the effect of effectively cleaning the inner wall of the mixing tank. This solves the problem of crystal purity reduction caused by the accumulation of wall adhering substances, and improves the cleaning efficiency of the crystallization tank and the product yield.

[0023] 2. In this utility model, impurities can be filtered through the filter screen. By pressing the lever, the locking shaft is disengaged from the limiting groove to unlock, thereby achieving the effect of quick installation and removal of the filter screen. This solves the problem of material filtration efficiency being affected by filter screen blockage and improves the continuity of the feeding process and equipment maintenance efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the stirring device for the purification and preparation of D-alanine proposed in this utility model.

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the stirring tank in the D-alanine purification and preparation stirring device proposed in this utility model.

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a schematic diagram of the cross-section of the feed pipe of the stirring device for the purification and preparation of D-alanine proposed in this utility model.

[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Mixing tank; 2. Feed pipe; 3. Support frame; 4. Motor; 5. Mixing rod; 6. Mixing blade; 7. Groove; 8. Connecting rod; 9. Spring 1; 10. Scraper; 11. Filter screen; 12. Fixing frame; 13. Support plate; 14. Limiting groove; 15. Retraction rod; 16. Extrusion plate; 17. Pulley; 18. Engaging shaft; 19. Spring 2. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3The present invention provides an embodiment of a stirring device for the purification and preparation of D-alanine, including a stirring tank 1. A feed pipe 2 is fixedly connected inside the stirring tank 1. The feed pipe 2 is mainly used to transport raw materials into the stirring tank 1 to ensure the continuous flow of reactants. A stirring component is provided inside the stirring tank 1. The main function of the stirring component is to accelerate the reaction through efficient stirring action, improve the preparation efficiency, and ensure the purification effect of D-alanine.

[0033] The stirring assembly includes a support frame 3, which is fixedly connected to the top of the stirring tank 1 at its bottom, providing necessary support for the stirring assembly. A motor 4 is fixedly connected inside the support frame 3, which drives the entire stirring assembly. A stirring rod 5 is fixedly connected to the output end of the motor 4, and stirring blades 6 are fixedly connected to the outer wall of the stirring rod 5, which can efficiently contact the reaction liquid, promote the uniform distribution of raw materials and improve the reaction rate. Multiple slots 7 are opened inside the stirring blades 6, which can help the liquid flow and mix more evenly during the stirring process. A connecting rod 8 is fixedly connected to the outer wall of the stirring blades 6, and springs 9 are provided at both ends of the connecting rod 8. Springs 9 are used to provide flexible pressure adjustment. One end of spring 9 is fixedly connected to one end of the connecting rod 8, and the other end is fixedly connected to a scraper 10. The function of scraper 10 is to remove the material adhering to the inner wall of the stirring tank 1, so as to avoid uneven mixing caused by the accumulation of material during the reaction process. One side of scraper 10 is in contact with the inner wall of the stirring tank 1. Scraper 10 is made of rubber. A filter assembly is installed inside the feed pipe 2 to filter impurities.

[0034] Reference Figure 4 and Figure 5 The filter assembly includes a filter screen 11 and a fixing frame 12. The filter screen 11 is slidably connected inside the feed pipe 2. The function of the filter screen 11 is to filter out impurities and unwanted particles from the raw materials entering the mixing tank 1, ensuring that the materials entering the mixing tank are purer. The fixing frame 12 is fixedly connected to the outer wall of the filter screen 11 on one side. A support plate 13 is fixedly connected inside the fixing frame 12. Both sides of the support plate 13 are fixedly connected to shrink rods 15. A limit groove 14 is opened inside the feed pipe 2. One end of the shrink rod 15 is fixedly connected to an extrusion plate 16, and one end of the extrusion plate 16 is fixedly connected to a locking shaft. 18. The engaging shaft 18 engages with the limiting groove 14, ensuring the precise positioning of the extrusion plate 16 and preventing it from shifting. A lever 17 is fixedly connected to the outer wall of the extrusion plate 16. The lever 17 can be manually adjusted to allow for more precise adjustment and disassembly of the filter assembly, providing ease of operation for users. A spring 19 is provided on the outer wall of the retraction rod 15 to provide elastic restoring force to the assembly, ensuring that the assembly can quickly return to its original position after movement. One end of the spring 19 is fixedly connected to the side wall of the extrusion plate 16, and the other end is fixedly connected to the side wall of the support plate 13.

[0035] Working Principle: When using this D-alanine purification and preparation stirring equipment, the raw material is first poured into the stirring tank 1 through the feed pipe 2. Then, the motor 4 drives the stirring rod 5 to rotate. The rotation of the stirring rod 5 drives the stirring blade 6 to stir. When the stirring blade 6 is stirring, the perforated groove 7 increases the flowability of the raw material and reduces the resistance of the stirring blade 6, thereby improving the mixing efficiency. While the stirring rod 5 is stirring, it also drives the scraper 10 to scrape against the inner wall of the stirring tank 1. The compression between the scraper 10 and the inner wall of the stirring tank 1 causes the spring 9 to elastically deform, thereby providing the scraper 10 with... The elastic restoring force drives it to fit tightly against the inner wall of the mixing tank 1, achieving the effect of cleaning residual materials on the inner wall of the mixing tank 1. While feeding, the raw materials can be filtered through the filter screen 11. When it is necessary to clean the filter screen 11, the user can press the lever 17 at the same time. The pressing force drives the extrusion plate 16 to slide inside the fixed frame 12, further squeezing the second spring 19, causing the second spring 19 to undergo elastic deformation and store elastic potential energy. At the same time, it drives the locking shaft 18 to disengage from the locking groove 14 to unlock, thereby facilitating the user to quickly install and remove the filter screen 11 and providing convenient operation.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stirring apparatus for the purification and preparation of D-alanine, comprising a stirring tank (1), characterized in that: The mixing tank (1) is fixedly connected to the feed pipe (2), and the mixing tank (1) is equipped with a mixing assembly. The stirring assembly includes a support frame (3), the bottom of which is fixedly connected to the top of the stirring tank (1). A motor (4) is fixedly connected inside the support frame (3). A stirring rod (5) is fixedly connected to the output end of the motor (4). A stirring blade (6) is fixedly connected to the outer wall of the stirring rod (5). Multiple slots (7) are opened inside the stirring blade (6). A connecting rod (8) is fixedly connected to the outer wall of the stirring blade (6). A spring (9) is provided at both ends of the connecting rod (8). One end of the spring (9) is fixedly connected to one end of the connecting rod (8), and the other end is fixedly connected to a scraper (10). One side of the scraper (10) is in contact with the inner wall of the stirring tank (1). The scraper (10) is made of rubber. A filter assembly is provided inside the feed pipe (2).

2. The D-alanine purification preparation stirring apparatus according to claim 1, characterized by: The filter assembly includes a filter screen (11) and a fixing frame (12). The filter screen (11) is slidably connected inside the feed pipe (2), and one side of the fixing frame (12) is fixedly connected to the outer wall of the filter screen (11).

3. The D-alanine purification preparation stirring apparatus according to claim 2, characterized by: The fixing frame (12) is internally fixedly connected to a support plate (13), and both sides of the support plate (13) are fixedly connected to a retractable rod (15).

4. The D-alanine purification preparation stirring apparatus according to claim 3, characterized by: The feed pipe (2) has a limiting groove (14) inside, and one end of the shrink rod (15) is fixedly connected to the extrusion plate (16).

5. The D-alanine purification preparation stirring apparatus according to claim 4, characterized by: One end of the extrusion disc (16) is fixedly connected to a locking shaft (18), which engages with the limiting groove (14).

6. The D-alanine purification preparation stirring apparatus according to claim 5, characterized by: A lever (17) is fixedly connected to the outer wall of the extrusion disc (16), and a spring (19) is provided on the outer wall of the retraction rod (15).

7. The D-alanine purification preparation stirring apparatus according to claim 6, characterized by: One end of the second spring (19) is fixedly connected to the side wall of the extrusion plate (16), and the other end is fixedly connected to the side wall of the support plate (13).

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