Intelligent rape flower extract concentration and solvent recovery integrated device

Abstract

The utility model discloses an integrated device of intelligent rape flower extract concentrate and solvent recovery, including the concentrate jar, the temporary storage jar of recovery liquid and the frame, and the concentrate jar and the temporary storage jar of recovery liquid are all fixed in the frame, and the concentrate jar is located recovery liquid temporary storage jar top, in the utility model adopt " the compact frame layout of concentrate jar top, recovery liquid temporary storage jar down", through the direct intercommunication of secondary steam export and condenser, form " the closed circulation loop of concentrate - steam condensation - solvent recovery", spare the transfer pipeline and intermediate storage jar of extract liquid in traditional craft, will production cycle shorten greatly, avoid the oxidation loss of polyphenol, flavone active ingredient because of the exposure air leads to simultaneously, and the built -in heating jacket of double -deck structure's concentrate jar, cooperate top stirring motor and stirring paddle, realize the uniform heating and efficient mass transfer of material in the concentration process, compare traditional single -effect concentrate jar and improve concentrate efficiency greatly.

Description

Technical Field

[0001] This utility model relates to a rapeseed flower extraction device, specifically an intelligent integrated device for rapeseed flower extract concentration and solvent recovery, belonging to the technical field of rapeseed flower extraction devices. Background Technology

[0002] Rapeseed, a widely cultivated strategic economic crop in my country, possesses the dual attributes of oil supply and high-value resource development. The polyphenols and flavonoids contained in its flowers, with their excellent antioxidant and anti-inflammatory bioactivities, have become core raw materials for food functional fortification, health product research and development, and cosmetic active ingredient addition. Market demand continues to grow. In the industrial production process of rapeseed flower extract, extraction, concentration, purification, and drying are interconnected. Among these, the concentration stage, as a key node connecting the extract with subsequent purification and drying processes, directly determines the yield of active ingredients, the retention of bioactivity, and the overall production cost of the final product. It is a core process affecting production efficiency and product quality.

[0003] However, most existing rapeseed extraction devices have various problems. For example, in the energy-saving concentration process and concentration device for extracting effective plant components disclosed in announcement number CN101879380B, although membrane centrifugation separation technology is used to replace the existing evaporation concentration method and the structure is simple, in this technical solution and most current technical solutions, although concentration and solvent recovery are the two core processes in the current industrial production of rapeseed active ingredients, they generally adopt separate equipment and independent operation processes, resulting in significant technical bottlenecks in the production process.

[0004] In existing processes, the concentration step typically relies on single-effect or multi-effect concentration tanks to reduce the volume of the extract, while solvent recovery requires a separate condensation recovery device to collect volatile solvents (such as ethanol). The extract needs to be transferred between the two devices multiple times, which not only prolongs the production cycle and increases the intensity of manual operation, but also causes active ingredients to be exposed to the air environment for a long time during the transfer process, making them prone to oxidation and degradation, resulting in loss of effective ingredients and reduced product quality. Both concentration and solvent recovery are high-energy-consuming processes. The design of separate equipment makes the thermal energy systems of the two independent, which cannot achieve efficient coupling and recycling of energy. For example, the heat of secondary steam generated during the concentration process is difficult to be utilized by the condensation system of solvent recovery. Instead, additional energy is required to maintain the condensation load, resulting in a significant increase in overall production energy consumption and high operating costs in the long term, which is not in line with the current trend of green and low-carbon industrial development.

[0005] Due to the structural limitations of separation equipment, open or semi-open operations are often used in the production process. Volatile organic solvents such as ethanol are prone to escape during transfer, concentration, and recovery. This not only causes direct loss of solvent materials and increases raw material costs, but also poses safety risks to the workshop due to the volatility and flammability of organic solvents. At the same time, the escaped solvents can also pollute the surrounding environment, failing to meet relevant national environmental protection emission and safety production standards. In existing processes, the determination of concentration endpoints (such as the specific gravity and viscosity of the extract) largely relies on the experience of operators, lacking precise online detection and automatic control methods. The purity and efficiency of solvent recovery are also greatly affected by differences in manual operation, making it difficult to achieve stable control. This production mode, which relies on manual labor, results in large fluctuations in key indicators such as the content of active ingredients and the amount of solvent residue in different batches of products, leading to poor product quality consistency and failing to meet the requirements of the food and health product industries for precise and standardized production processes. Utility Model Content

[0006] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing an intelligent integrated device for rapeseed extract concentration and solvent recovery.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An intelligent integrated device for rapeseed extract concentration and solvent recovery includes a concentration tank, a recovery liquid storage tank, and a frame. The concentration tank and the recovery liquid storage tank are both fixed inside the frame, with the concentration tank located above the recovery liquid storage tank. A concentration extraction component is installed on the concentration tank, and a solvent recovery component is installed between the concentration tank and the recovery liquid storage tank.

[0009] The concentration and extraction assembly includes a heating jacket, a heat medium inlet, a heat medium outlet, a stirring paddle, and a stirring motor. The concentration tank has a double-layer structure. The heating jacket is set inside the partition of the concentration tank. The heat medium inlet and the heat medium outlet are fixed to the concentration tank side by side, with one end of each heat medium inlet and outlet connected to the heating jacket and the other end connected to an external guide pipe. The stirring motor is fixed at the top center of the concentration tank. One end of the stirring paddle is coaxially fixed to the output shaft of the stirring motor and is located in the internal cavity of the concentration tank.

[0010] The solvent recovery assembly includes a secondary steam outlet and a condenser. The secondary steam outlet is located at the top of the concentration tank, and the condenser is fixed to one side of the frame. The two ends of the condenser are connected to the secondary steam outlet and the recovery liquid storage tank respectively through pipes.

[0011] As a further improvement of this utility model: the top of the concentration tank is provided with a material inlet, and a sealing disc is provided on the material inlet by means of a quick-release clamp.

[0012] As a further improvement of this utility model: a vacuum system connecting pipe is also fixed to the top of the concentration tank, the top end of the vacuum system connecting pipe is connected to an external vacuum device through a conduit, and a valve is provided on the vacuum system connecting pipe.

[0013] As a further improvement of this utility model: the bottom of the recovery liquid storage tank is provided with a recovery solvent outlet, the bottom of the concentration tank is provided with a concentrate outlet, and a discharge valve is provided on the concentrate outlet.

[0014] As a further improvement of this utility model: an online density meter is connected to the outlet of the concentrate, and a temperature / pressure sensor is fixed on the outer wall of the concentration tank.

[0015] As a further improvement of this utility model: a PLC control cabinet is fixed on the frame, and the PLC control cabinet is electrically connected to an online density meter and a temperature / pressure sensor respectively through wires.

[0016] The beneficial effects of this utility model are:

[0017] This invention employs a compact frame layout with a concentration tank on top and a recovery liquid storage tank below. A secondary steam outlet directly connects to the condenser, forming a closed-loop cycle of concentration-steam condensation-solvent recovery. This eliminates the need for extraction liquid transfer pipes and intermediate storage tanks in traditional processes, significantly shortening the production cycle. It also prevents oxidation loss of active ingredients such as polyphenols and flavonoids due to air exposure. The double-layered concentration tank features a built-in heating jacket, coupled with a top-mounted stirring motor and impeller, ensuring uniform heating and efficient mass transfer of materials during concentration. This significantly improves concentration efficiency compared to traditional single-effect concentration tanks. Furthermore, it integrates online density meters, temperature / pressure sensors, and other monitoring elements to collect real-time data on the concentrate's specific gravity, temperature, and level. This data is transmitted to the PLC control cabinet for automatic determination of the concentration endpoint, replacing manual judgment and providing greater accuracy. The fully automated process enables coordinated operation of feeding, heating, stirring, and condensation recovery, reducing manual intervention, ensuring consistent product quality, and significantly improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the external structure of the concentration tank of this utility model;

[0020] Figure 3This is a schematic diagram of the cross-sectional structure of the concentration tank of this utility model;

[0021] Figure 4 This is a schematic diagram of the condenser and its connection structure of this utility model.

[0022] In the diagram: 1. Concentrator, 2. Heating jacket, 3. Heat medium inlet, 4. Heat medium outlet, 5. Agitator, 6. Agitator motor, 7. Material inlet, 8. Secondary steam outlet, 9. Condenser, 10. Recovery liquid storage tank, 11. Vacuum system connection pipe, 12. Recovery solvent outlet, 13. Online density meter, 14. Temperature / pressure sensor, 15. PLC control cabinet, 16. Discharge valve, 17. Concentrate outlet, and 18. Frame. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] like Figures 1 to 4 As shown, an intelligent integrated device for rapeseed extract concentration and solvent recovery includes a concentration tank 1, a recovery liquid storage tank 10, and a frame 18. The concentration tank 1 and the recovery liquid storage tank 10 are both fixed inside the frame 18, and the concentration tank 1 is located above the recovery liquid storage tank 10. A concentration extraction component is provided on the concentration tank 1, and a solvent recovery component is provided between the concentration tank 1 and the recovery liquid storage tank 10.

[0026] The concentration and extraction assembly includes a heating jacket 2, a heat medium inlet 3, a heat medium outlet 4, a stirring paddle 5, and a stirring motor 6. The concentration tank 1 has a double-layer structure. The heating jacket 2 is set inside the partition of the concentration tank 1. The heat medium inlet 3 and the heat medium outlet 4 are fixed on the concentration tank 1 side by side. One end of the heat medium inlet 3 and the heat medium outlet 4 are connected to the heating jacket 2, and the other end is connected to the external guide pipe. The stirring motor 6 is fixed at the top center of the concentration tank 1. One end of the stirring paddle 5 is coaxially fixed on the output shaft of the stirring motor 6 and is located in the internal cavity of the concentration tank 1.

[0027] The solvent recovery assembly includes a secondary steam outlet 8 and a condenser 9. The secondary steam outlet 8 is located on the top of the concentration tank 1, and the condenser 9 is fixed on one side of the frame 18. The two ends of the condenser 9 are connected to the secondary steam outlet 8 and the recovery liquid storage tank 10 respectively through pipes.

[0028] An online density meter 13 is connected to the concentrate outlet 17, and a temperature / pressure sensor 14 is fixed on the outer wall of the concentration tank 1. A PLC control cabinet 15 is fixed on the frame 18, and the PLC control cabinet 15 is electrically connected to the online density meter 13 and the temperature / pressure sensor 14 through wires.

[0029] This invention employs a compact frame layout 18 with a concentration tank 1 on top and a recovery liquid storage tank 10 below. It is directly connected to the condenser 9 via a secondary steam outlet 8, forming a closed-loop cycle of "concentration-steam condensation-solvent recovery." This eliminates the need for extraction liquid transfer pipes and intermediate storage tanks in traditional processes, significantly shortening the production cycle. It also avoids oxidation loss of active ingredients such as polyphenols and flavonoids due to air exposure. Furthermore, the double-layered concentration tank 1 has a built-in heating jacket 2, which, along with the top stirring motor 6 and stirring paddle 5, ensures uniform heating and efficient mass transfer of materials during concentration, significantly improving concentration efficiency compared to traditional single-effect concentration tanks. It integrates monitoring elements such as an online density meter 13 and a temperature / pressure sensor 14 to collect real-time data on the specific gravity, temperature, and liquid level of the concentrate. This data is transmitted to the PLC control cabinet 15, automatically determining the concentration endpoint and replacing manual judgment. This more accurate process and fully automated control enable coordinated operation of feeding, heating, stirring, and condensation recovery, reducing manual intervention, ensuring consistent product quality, and significantly improving work efficiency.

[0030] Example 2

[0031] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0032] The top of the concentration tank 1 is equipped with a material inlet 7, which is fixed with a sealing plate by a quick-release clamp. This facilitates quick disassembly and assembly, significantly reducing equipment cleaning and maintenance time. When changing different batches of rapeseed extract or performing equipment maintenance, disassembly can be completed without complicated tools, improving production flexibility.

[0033] The top of the concentration tank 1 is also fixed with a vacuum system connection pipe 11. The top end of the vacuum system connection pipe 11 is connected to an external vacuum device through a conduit. A valve is installed on the vacuum system connection pipe 11. The top end of the vacuum system connection pipe 11 is connected to the external vacuum device. The opening and closing and flow rate are controlled by the valve, which can precisely adjust the vacuum level in the concentration tank 1. The lower vacuum environment can reduce the boiling point of the extract, achieve low-temperature concentration, effectively reduce the degradation of heat-sensitive active ingredients such as polyphenols and flavonoids, and improve product yield and quality.

[0034] The bottom of the recovery liquid storage tank 10 is provided with a recovery solvent outlet 12, and the bottom of the concentration tank 1 is provided with a concentrate outlet 17. A discharge valve 16 is provided on the concentrate outlet 17. The recovery solvent outlet 12 at the bottom of the recovery liquid storage tank 10 and the concentrate outlet 17 at the bottom of the concentration tank 1 are independent of each other to avoid mixing of the recovery solvent and the concentrate, and to ensure that the purity of the recovery solvent and the concentration of the concentrate meet the standards, thus facilitating subsequent solvent reuse and deep processing of the concentrate.

[0035] Working principle: When using this rapeseed extraction device, the rapeseed extract is injected into the tank 1 through the material inlet 7 at the top of the concentration tank 1. The sealing disc fixed by the quick-release clamp immediately closes, forming a sealed environment to prevent material volatilization and external contamination. The valve on the vacuum system connecting pipe 11 is opened, and the external vacuum equipment evacuates the concentration tank 1 through the conduit, precisely controlling the negative pressure inside the tank to the preset value. At this time, the heat medium flows into the heating jacket 2 of the concentration tank 1 from the heat medium inlet 3, and the extract inside the tank is uniformly heated through the countercurrent heat exchange design. At the same time, the top stirring motor 6 drives the stirring paddle 5 to operate, enhancing material mass transfer and avoiding local overheating. During extraction, the secondary steam enters the condenser 9 through the secondary steam outlet 8 at the top of the concentration tank 1 and is efficiently condensed into a liquid solvent. The condensed solvent flows into the recovery liquid storage tank 10 and is discharged through the bottom recovery solvent outlet 12.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent integrated device for rapeseed extract concentration and solvent recovery, comprising a concentration tank (1), a recovery liquid storage tank (10), and a frame (18), characterized in that, The concentration tank (1) and the recovery liquid storage tank (10) are both fixed inside the frame (18), and the concentration tank (1) is located above the recovery liquid storage tank (10); a concentration extraction component is provided on the concentration tank (1), and a solvent recovery component is provided between the concentration tank (1) and the recovery liquid storage tank (10); The concentration and extraction assembly includes a heating jacket (2), a heat medium inlet (3), a heat medium outlet (4), a stirring paddle (5), and a stirring motor (6). The concentration tank (1) has a double-layer structure. The heating jacket (2) is set inside the partition of the concentration tank (1). The heat medium inlet (3) and the heat medium outlet (4) are fixed on the concentration tank (1) side by side. One end of the heat medium inlet (3) and the heat medium outlet (4) are connected to the heating jacket (2), and the other end is connected to the external guide pipe. The stirring motor (6) is fixed at the top center of the concentration tank (1). One end of the stirring paddle (5) is coaxially fixed on the output shaft of the stirring motor (6) and located in the internal cavity of the concentration tank (1). The solvent recovery assembly includes a secondary steam outlet (8) and a condenser (9). The secondary steam outlet (8) is located at the top of the concentration tank (1), and the condenser (9) is fixed on one side of the frame (18). The two ends of the condenser (9) are connected to the secondary steam outlet (8) and the recovery liquid storage tank (10) respectively through pipes.

2. The intelligent integrated device for rapeseed extract concentration and solvent recovery according to claim 1, characterized in that: The top of the concentration tank (1) is provided with a material inlet (7), and a sealing plate fixed by a quick-release clamp is provided on the material inlet (7).

3. The intelligent integrated device for rapeseed extract concentration and solvent recovery according to claim 1, characterized in that: The top of the concentration tank (1) is also fixed with a vacuum system connecting pipe (11), the top end of which is connected to an external vacuum device through a conduit, and a valve is provided on the vacuum system connecting pipe (11).

4. The intelligent integrated device for rapeseed extract concentration and solvent recovery according to claim 1, characterized in that: The bottom of the recovery liquid storage tank (10) is provided with a recovery solvent outlet (12), the bottom of the concentration tank (1) is provided with a concentrate outlet (17), and the concentrate outlet (17) is provided with a discharge valve (16).

5. The intelligent integrated device for rapeseed extract concentration and solvent recovery according to claim 4, characterized in that: An online density meter (13) is connected to the concentrate outlet (17), and a temperature / pressure sensor (14) is fixed on the outer wall of the concentration tank (1).

6. The intelligent integrated device for rapeseed extract concentration and solvent recovery according to claim 5, characterized in that: A PLC control cabinet (15) is fixed on the frame (18), and the PLC control cabinet (15) is electrically connected to the online density meter (13) and the temperature / pressure sensor (14) respectively through wires.

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