A soybean peptide solution concentration and evaporation device

Abstract

The utility model relates to food engineering and biological separation technical field especially, more particularly to a kind of concentrated evaporation device for soybean peptide liquid, including support frame, the support frame is installed with evaporation tank body, the evaporation tank body top is connected and is communicated with liquid input pipe, first electric control valve is installed on the liquid input pipe, membrane distributor is installed in the upper portion in the evaporation tank body. By the high-efficiency front filter pretreatment module consisting of connecting barrel, filter cartridge and functional filter material, the functional impurities such as protein aggregate, suspended particles, fiber residue, pigment, saponin and bitter peptide in soybean peptide liquid which are not completely decomposed can be effectively removed, to avoid its into high-temperature heat exchange area to cause pollution and denaturation, and the purified feed liquid can better form uniform and continuous liquid film in heat exchange tube, significantly improve heat transfer efficiency and evaporation rate, while reducing the risk of active ingredient inactivation, to protect the purity and biological activity of final product.

Description

Technical Field

[0001] This utility model relates to the fields of food engineering and biological separation technology, and in particular to a concentrated evaporation device for soybean peptide liquid. Background Technology

[0002] Soy peptides are a class of functional peptides with various biological activities, obtained from soybean protein through enzymatic hydrolysis, separation, and purification processes. They are widely used in nutritional supplements, health foods, clinical nutritional support, and functional beverages. Their main effects include enhancing immunity, lowering blood pressure, anti-oxidation, and promoting fat metabolism. With the increasing demand for health foods, the research and industrial production of high-purity, high-quality soybean peptide products have received increasing attention. In the preparation of soybean peptides, concentration is one of the key steps, directly affecting the concentration, stability, and activity retention rate of the final product. Currently, commonly used concentration methods include evaporation concentration, reverse osmosis, nanofiltration, and thermal evaporation. Among them, falling film evaporation technology is widely used in the liquid food and biopharmaceutical industries due to its advantages such as high heat transfer efficiency, short material residence time, and suitability for continuous production.

[0003] Currently, traditional evaporators typically consist of a heating chamber, a film distributor, heat exchange tubes, a separation chamber, and auxiliary piping. The liquid is evenly distributed into the inner wall of the heat exchange tubes via the film distributor, forming a downward-flowing liquid film under gravity. Heating steam is then introduced outside the heat exchange tubes to indirectly heat the liquid film, causing rapid vaporization and concentration of the water. While existing evaporators can effectively concentrate soybean peptide liquid, some shortcomings remain in practical applications. Existing evaporators lack a pre-purification device. After enzymatic hydrolysis, soybean peptide liquid often contains incompletely decomposed protein aggregates, suspended particles, fiber residues, and functional impurities such as pigments, saponins, and bitter peptides. Without effective pretreatment, these impurities easily deposit on the inner wall of the heat exchange tubes after entering the high-temperature heat exchange zone, forming a fouling layer. This not only significantly reduces heat transfer efficiency but also causes localized overheating, leading to denaturation or inactivation of active peptides, affecting the final concentration stability and quality.

[0004] Therefore, there is an urgent need to provide a concentrated evaporation device for soybean peptide liquid with efficient pre-filtration pretreatment. Utility Model Content

[0005] In order to overcome the shortcomings of existing evaporators that lack a pre-purification device when processing soybean peptide liquid, which causes impurities in the soybean peptide liquid to affect heat transfer efficiency and reduce concentration stability and quality, this utility model provides a soybean peptide liquid concentration evaporation device with efficient pre-filtration pretreatment.

[0006] To address the aforementioned problems, this utility model adopts the following technical solution: a concentrated evaporation device for soybean peptide liquid, comprising a support frame, an evaporation tank mounted on the support frame, a liquid inlet pipe connected to and communicating with the top of the evaporation tank, a first electrically controlled valve mounted on the liquid inlet pipe, a film distributor mounted on the upper part of the evaporation tank, a vertically arranged annular array heat exchange tube assembly mounted on the upper part of the evaporation tank, the annular array heat exchange tube assembly located below the film distributor, a steam inlet pipe opened on the side of the evaporation tank, and a steam inlet pipe mounted on the steam inlet pipe. The second electrically controlled valve is connected to the bottom of the evaporator body and a liquid discharge pipe. A third electrically controlled valve is installed on the liquid discharge pipe. A separation tank is connected to the lower part of the evaporator body and a demister plate is installed in the upper part of the separation tank. A fourth electrically controlled valve is installed at the steam outlet of the separation tank. A connecting cylinder is installed at the inlet of the liquid input pipe. A filter cylinder is detachably installed on the connecting cylinder through a threaded structure. The filter cylinder is filled with multiple layers of functional filter material to form a gradient filtration system. Multiple anti-slip grips are evenly spaced along the circumference of the outer wall of the filter cylinder.

[0007] Furthermore, the outlet of the liquid discharge pipe is provided with a threaded connector.

[0008] Furthermore, a servo motor is installed on the top of the evaporator, and a connecting rod is rotatably installed inside the evaporator. The upper end of the connecting rod extends upward through the top of the evaporator and is connected to the output shaft of the servo motor via a coupling. A paddle-type agitator head is installed at the lower end of the connecting rod, located at the bottom of the evaporator. A scraper is installed on the paddle-type agitator head.

[0009] Furthermore, the scraper has an overall L-shaped structure, with its vertical section contacting the inner wall surface of the evaporator tank and its horizontal section contacting the bottom surface of the evaporator tank, forming a covering scraping structure for the inner wall and bottom surface of the tank.

[0010] Furthermore, a vacuum pump is installed on the outer side wall of the evaporator, and the suction end of the vacuum pump is connected to the evaporator through a suction pipe, and a fifth electrically controlled valve is installed on the suction pipe.

[0011] Furthermore, a protective shell is provided on the top of the evaporator body, and the protective shell covers the outside of the servo motor.

[0012] Compared with the prior art, the present invention has the following technical effects: 1. Through the high-efficiency pre-filtration pretreatment module composed of a connecting cylinder, a filter cylinder and functional filter material, it can effectively remove incompletely decomposed protein aggregates, suspended particles, fiber residues and functional impurities such as pigments, saponins, and bitter peptides from soybean peptide liquid, avoiding them from entering the high-temperature heat exchange zone and causing pollution and denaturation. In addition, the purified liquid can better form a uniform and continuous liquid film in the heat exchange tube, significantly improving heat transfer efficiency and evaporation rate, while reducing the risk of active ingredient deactivation and ensuring the purity and biological activity of the final product.

[0013] 2. The servo motor drives the connecting rod to rotate the paddle agitator and L-shaped scraper, which can simultaneously scrape the inner wall and bottom of the evaporator during the discharge stage, remove residual concentrate, prevent material from sticking to the wall and accumulating in dead corners, and ensure thorough discharge.

[0014] 3. By setting up a vacuum pump to evacuate the evaporation chamber before operation, the operating pressure is reduced, allowing the water to vaporize at a lower temperature, achieving low-temperature concentration. This effectively avoids peptide chain breakage or scorching caused by high temperatures, and improves the color and taste quality of the product. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional sectional view of the evaporator, film distributor, and separator of this utility model.

[0017] Figure 3 This is a three-dimensional sectional view of the connecting cylinder, filter cylinder, and functional filter material components of this utility model.

[0018] Figure 4 This is a three-dimensional sectional view of the servo motor, connecting rod, and paddle-type agitator head of this utility model.

[0019] Figure 5 This is a partial sectional view of the evaporator tank, vacuum pump, and suction pipe of this utility model.

[0020] In the attached diagram, the following are the reference numerals: 1. Support frame; 2. Evaporator body; 3. Liquid inlet pipe; 4. First electrically controlled valve; 5. Membrane distributor; 6. Annular array heat exchange tube assembly; 7. Steam inlet pipe; 8. Second electrically controlled valve; 9. Liquid outlet pipe; 10. Third electrically controlled valve; 11. Threaded connector; 12. Separator; 13. Defoamer plate; 14. Fourth electrically controlled valve; 15. Connecting cylinder; 16. Filter cylinder; 17. Functional filter material; 18. Anti-slip grip; 19. Servo motor; 20. Connecting rod; 21. Paddle agitator head; 22. Scraper; 23. Vacuum pump; 24. Suction pipe; 25. Fifth electrically controlled valve; 26. Protective shell. Detailed Implementation

[0021] 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.

[0022] Example 1: Please refer to Figures 1-3A concentrated evaporation device for soybean peptide liquid includes a support frame 1, on which an evaporation tank 2 is mounted. A liquid inlet pipe 3 is connected to and communicates with the top of the evaporation tank 2. A first electrically controlled valve 4 for precisely controlling the start / stop of the feed and regulating the flow rate is installed on the liquid inlet pipe 3. A film distributor 5 is installed in the upper part of the evaporation tank 2 to evenly distribute the soybean peptide liquid, forming a continuous, stable, and controllable thickness liquid film layer. A vertically arranged annular array heat exchange tube assembly 6 is installed in the upper part of the evaporation tank 2, located below the film distributor 5. The soybean peptide liquid evenly distributed by the film distributor 5 can flow along the annular array heat exchange tube assembly 6. The liquid flows downwards along the inner wall, forming a falling film. Steam is introduced through the outside of the heat exchange tubes for heat exchange, raising the liquid temperature and promoting water evaporation, thus achieving the evaporation and concentration process. The front side of the evaporator tank 2 has a steam input pipe 7 for connecting to the steam distribution main. A second electrically controlled valve 8 is installed on the steam input pipe 7 to regulate the heating steam pressure and its on / off state. The bottom of the evaporator tank 2 is connected to a liquid discharge pipe 9. A third electrically controlled valve 10 is installed on the liquid discharge pipe 9 to control the discharge of the concentrated liquid. The outlet of the liquid discharge pipe 9 is equipped with a threaded connector 11 for quick connection to a collection tank, storage tank, or downstream processing equipment. The lower right side of the evaporator tank 2... A separator 12 is connected and interconnected. A demister 13 is installed on the upper part of the separator 12 to efficiently separate liquid droplets and foam entrained in the steam using an inertial collision and interception mechanism, ensuring the dryness of the steam entering the condensation system. A fourth electrically controlled valve 14 for controlling steam emission is installed at the steam outlet of the separator 12. A connecting cylinder 15 is installed at the inlet of the liquid input pipe 3. A filter cylinder 16 is detachably installed on the connecting cylinder 15 via a threaded structure. The filter cylinder 16 has an external threaded hole on its outer circumference, and the connecting cylinder 15 has a matching internal threaded hole on its inner wall. The two form a precise threaded connection, allowing for quick assembly and fastening through rotation. The filter cartridge 16 is securely and reliably connected with good sealing performance. It is filled with three layers of functional filter material 17 to form a gradient filtration system. The bottom layer consists of food-grade polypropylene coarse filter balls with a particle size of 2-3 mm to remove suspended particles, fiber debris and large molecular aggregates. The middle layer consists of modified activated carbon particles to selectively adsorb residual bitter peptides, saponins, isoflavone aglycones and some pigments in soybean peptide liquid. The top layer is a polyethersulfone pleated microporous filter element to intercept colloids, bacteria and particles, reducing the turbidity of the peptide liquid entering the evaporator tank 2. The outer wall of the filter cartridge 16 is evenly spaced with four anti-slip handles 18 along the circumference to facilitate manual twisting of the filter cartridge 16 for loading and unloading operations, improving maintenance convenience.

[0023] When the device is in operation, the first electrically controlled valve 4 is opened, and the soybean peptide liquid is pumped into the filter cartridge 16. Driven by the pump pressure, it passes through three layers of functional filter material 17 in sequence, realizing three-stage treatment of coarse filtration, functional adsorption, and fine filtration. The output is a clear, transparent, low-odor, and microbiologically qualified clean liquid. Then, it enters the evaporator tank 2 through the liquid input pipe 3. After the liquid reaches the film distributor 5, it is evenly distributed to the inner wall of each heat exchange tube. It forms a stable descending liquid film by gravity. At the same time, the second electrically controlled valve 8 is opened to introduce heating steam. The steam evaporator tank 2 releases latent heat, causing the tube wall temperature to rise rapidly. The heat is conducted to the inner wall liquid film, causing the water to vaporize rapidly. As the liquid film descends, the water in the liquid evaporates continuously, and the concentration gradually increases, eventually forming a high-concentration soybean peptide concentrate. It accumulates at the bottom of the evaporator tank 2 and is discharged periodically through the third electrically controlled valve 10. The secondary steam generated by the evaporation of the liquid carries a small amount of mist into the separator tank 12. After being purified by the defoaming plate 13, it becomes dry steam, which can be used for waste heat recovery or sent to the condenser to be condensed into distilled water for reuse.

[0024] Example 2: Based on Example 1, please refer to... Figure 1 and Figure 4 A servo motor 19 is installed on the top of the evaporator tank 2. A connecting rod 20 is rotatably installed inside the evaporator tank 2. The upper end of the connecting rod 20 passes through the top of the evaporator tank 2 and is connected to the output shaft of the servo motor 19 via a coupling. A paddle-type agitator head 21 is installed at the lower end of the connecting rod 20 and is located at the bottom of the evaporator tank 2. A scraper 22 is installed on the paddle-type agitator head 21. The scraper 22 has an overall L-shaped structure. Its vertical section contacts the inner wall surface of the evaporator tank 2, while its horizontal section contacts the inner bottom surface of the evaporator tank 2, forming a covering scraping structure for the inner wall and bottom surface of the tank. A protective shell 26 is provided on the top of the evaporator tank 2. The protective shell 26 covers the outside of the servo motor 19 and can effectively isolate water vapor, dust and corrosive gases from the external environment.

[0025] During operation, after the concentration process ends and the third solenoid valve 10 is opened, the servo motor 19 is started, driving the connecting rod 20 to rotate the paddle agitator 21 around the central axis of the equipment. During the rotation, the L-shaped scraper 22 moves synchronously. Its vertical section scrapes around the inner wall of the cylinder to remove the residual concentrated liquid film adhering to the wall surface, while the horizontal section scrapes the bottom of the evaporator to prevent the high-viscosity liquid from accumulating in dead corners. At the same time, the rotation of the paddle agitator 21 generates a turbulent effect, promoting the flow and uniform discharge of the concentrated liquid at the bottom, effectively avoiding local stagnation, coking, or blockage.

[0026] Example 3: Based on Example 2, please refer to... Figure 5A vacuum pump 23 is installed on the outer left side wall of the evaporator tank 2. The suction end of the vacuum pump 23 is connected to the evaporator tank 2 through a suction pipe 24. A fifth electrically controlled valve 25 is installed on the suction pipe 24 for precisely controlling the start and stop of the vacuuming process.

[0027] Before the concentration operation begins, the fifth solenoid valve 25 is opened and the vacuum pump 23 is started to evacuate the internal space of the evaporator tank 2, so that the pressure in the evaporation chamber drops to the set value, thereby lowering the boiling point of water in the liquid and allowing water to vaporize at a lower temperature, achieving low-temperature evaporation. This effectively prevents heat-sensitive components such as soybean peptides from denaturing or becoming inactive due to high temperatures. Once the system reaches the preset vacuum level, the fifth solenoid valve 25 is closed and the vacuum pump 23 is stopped, and the heating and concentration stage begins.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concentrated evaporation device for soybean peptide liquid, comprising a support frame (1), an evaporation tank (2) mounted on the support frame (1), a liquid inlet pipe (3) connected and communicating with the top of the evaporation tank (2), a first electrically controlled valve (4) mounted on the liquid inlet pipe (3), a film distributor (5) mounted in the upper part of the evaporation tank (2), and a vertically arranged annular array heat exchange tube assembly (6) mounted in the upper part of the evaporation tank (2), the annular array heat exchange tube assembly (6) being located below the film distributor (5). The evaporator (2) has a steam input pipe (7) on its side, and a second electrically controlled valve (8) is installed on the steam input pipe (7). The bottom of the evaporator (2) is connected to and communicates with a liquid discharge pipe (9), and a third electrically controlled valve (10) is installed on the liquid discharge pipe (9). The lower part of the evaporator (2) is connected to and communicates with a separation tank (12). A demister plate (13) is installed in the upper part of the separation tank (12). A fourth electrically controlled valve (14) is installed at the steam outlet of the separation tank (12). A connecting cylinder (15) is installed at the inlet of the liquid input pipe (3). A filter cylinder (16) is detachably installed on the connecting cylinder (15) through a threaded structure. The filter cylinder (16) is filled with multiple layers of functional filter material (17) to form a gradient filtration system. Multiple anti-slip grips (18) are evenly spaced along the circumference of the outer wall of the filter cylinder (16).

2. The soybean peptide liquid concentration and evaporation device according to claim 1, characterized in that, The outlet of the liquid discharge pipe (9) is provided with a threaded connector (11).

3. The soybean peptide liquid concentration and evaporation device according to claim 2, characterized in that, A servo motor (19) is installed on the top of the evaporator (2). A connecting rod (20) is rotatably installed inside the evaporator (2). The upper end of the connecting rod (20) passes through the top of the evaporator (2) and is connected to the output shaft of the servo motor (19) through a coupling. A paddle-type stirring head (21) is installed at the lower end of the connecting rod (20). The paddle-type stirring head (21) is located at the bottom of the evaporator (2). A scraper (22) is installed on the paddle-type stirring head (21).

4. The soybean peptide liquid concentration and evaporation device according to claim 3, characterized in that, The scraper (22) has an overall L-shaped structure. Its vertical section contacts the inner wall surface of the evaporator (2), while its horizontal section contacts the inner bottom surface of the evaporator (2), forming a covering scraping structure for the inner wall and bottom surface of the tank.

5. The soybean peptide liquid concentration and evaporation device according to claim 4, characterized in that, A vacuum pump (23) is installed on the outer side wall of the evaporator (2). The suction end of the vacuum pump (23) is connected to the evaporator (2) through the suction pipe (24). A fifth electric control valve (25) is installed on the suction pipe (24).

6. The soybean peptide liquid concentration and evaporation device according to claim 5, characterized in that, The top of the evaporator tank (2) is provided with a protective shell (26), which covers the outside of the servo motor (19).

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