Vegetable protein decomposition electrode and vegetable protein extraction system using same

Abstract

The utility model relates to a vegetable protein decomposition electrode and a vegetable protein extraction system using the same, which belong to the technical field of production equipment, are provided for overcoming the defect that the protein component is influenced by the chemical extraction of the vegetable protein in the prior art, and comprise a metal pipeline, a built-in electrode stem, an insulating end cover and a liquid collecting cavity, the metal pipeline is used as a high-voltage electrode, the built-in electrode stem is used as a grounding electrode, and radial guide grooves which are uniformly distributed from the center of the grounding electrode to the direction of the high-voltage electrode are circumferentially formed in the outer wall of the built-in electrode stem; the insulating end cover and the metal pipeline jointly define a closed space, the built-in electrode stem is coaxially arranged in the space, and a treatment channel for soybean protein liquid to flow through is formed between the built-in electrode stem and the inner wall of the metal pipeline; the liquid collecting cavities are located at the two ends of the treatment channel and communicate with the liquid inlet and the liquid outlet correspondingly. The vegetable protein decomposition electrolysis device is simple in structure, reasonable in design, uniform in temperature in the treatment process and low in temperature rise fluctuation.

Description

Technical Field

[0001] The utility model belongs to the technical field of production equipment, and particularly relates to a plant protein decomposition electrode and a plant protein extraction system using the electrode. Background Art

[0002] Plant protein is an important nutrient in plant foods. After extraction, it can be used as a food supplement or additive to provide people with necessary amino acids and nutrients. Compared with animal protein, plant protein contains lower fat and cholesterol in some cases. It can be used as a healthy food alternative to animal protein and is more suitable for preventing the needs of specific health groups such as cardiovascular disease, obesity and certain types of cancer. Plant protein is widely available and can be obtained in large quantities from planting and agricultural production, reducing dependence on limited animal resources. In the extraction process of some existing plant proteins, alkali is added to adjust the pH value of the protein-containing liquid, increase solubility, promote protein release, remove impurities, and improve subsequent processing steps. However, excessive alkali will destroy the structure of the protein, resulting in loss of function or denaturation. For this reason, the present application provides an alkali-free plant protein extraction process, so as to retain the nutritional protein substances in the plant as high quality as possible. Summary of the Invention

[0003] In order to overcome the drawback that the existing chemical extraction process affects the protein components in plants, the utility model provides a plant protein decomposition electrode and a plant protein extraction system using the electrode. Through non-thermal biological extraction technology, a high-voltage pulse electric field is applied to a liquid containing protein to retain the nutrients in the plant protein as much as possible.

[0004] The technical solution adopted by the present invention is: a plant protein decomposition electrode, comprising: a metal pipe, a built-in electrode rod, an insulating end cap and a liquid collecting chamber, wherein the metal pipe is connected to the high-voltage end of the back-pressure boosting circuit through a wiring terminal, serving as a high-voltage electrode; the built-in electrode rod is connected to the grounding end of the back-pressure boosting circuit through a wiring terminal, serving as a grounding electrode, and radial guide grooves are uniformly distributed from the center of the grounding electrode toward the high-voltage electrode on the circumference of the outer wall of the built-in electrode rod; there are two insulating end caps, which together with the metal pipe form a closed space, the built-in electrode rod is coaxially arranged in the space, and forms a processing channel for the soy protein liquid to flow through between the built-in electrode rod and the inner wall of the metal pipe, and the radial guide grooves are part of the processing channel; the liquid collecting chamber is used to increase the flow rate of the soy protein liquid flowing into or out of the processing channel, and the liquid collecting chamber is located at both ends of the processing channel and is respectively connected to the liquid inlet and the liquid outlet.

[0005] Preferably, liquid collecting covers are respectively provided on the outside of the liquid inlet and liquid outlet of the metal pipe, and the liquid collecting cavity is the area enclosed by the liquid collecting cover and the outer wall of the metal pipe. The liquid inlet and liquid outlet are respectively opened on the side walls at both ends of the metal pipe, and the liquid inlet and liquid outlet are both located in the corresponding liquid collecting covers.

[0006] Preferably, a water-dividing flange plate is installed between each insulating end cover and the metal pipe, the liquid collecting chamber is located in the area enclosed between the water-dividing flange plate and the inner wall of the insulating end cover, and the liquid inlet and outlet are respectively opened on the water-dividing flange plates at corresponding positions.

[0007] Preferably, the liquid inlet and the liquid outlet are both distributed in an annular shape.

[0008] Preferably, the bottom of the radial guide groove is in a concave arc shape.

[0009] Preferably, a cooler for cooling the metal pipe is attached to the outer wall of the metal pipe.

[0010] Preferably, the cooler is composed of a plurality of heat sinks fixed on the outer wall of the metal pipe, and each heat sink is in a circular ring shape or a fan shape.

[0011] Preferably, the cooler comprises a cooling pipeline wound around a metal pipe, wherein the cooling pipeline carries a flowing low-temperature cooling medium.

[0012] Preferably, the distance between the inner wall of the metal pipe and the outer wall of the built-in electrode rod is set in the range of 1 mm to 10 mm.

[0013] The plant protein extraction system comprises: a soaking tank, a centrifuge and a spray dryer, and a plant protein decomposition electrode as described in any one of the above items is also arranged between the soaking tank and the centrifuge.

[0014] The beneficial effects of the utility model are:

[0015] 1. This utility model uses an electric field formed by high-frequency pulses to electrically stimulate soy protein plant cells, using this stimulation to destroy the cell membrane and cell wall, allowing the protein and other useful components within the cells to be released more easily, thereby shortening the protein extraction time and improving the extraction efficiency. Compared with traditional extraction methods, the electric field treatment process is shorter, the temperature is lower during the treatment, the treatment energy consumption is reduced, and there is no environmental pollution, making it more environmentally friendly.

[0016] 2. In order to maintain the freshness of the soy protein liquid, the utility model adopts a built-in electrode rod with a radial longitudinal cross-section. The radial guide grooves provided on the built-in electrode rod are used to accelerate the flow rate of the soy protein liquid through the electric field. By increasing the flow rate, the local temperature rise of the liquid when flowing through the electric field is controlled, thereby retaining the nutrients in the protein liquid as much as possible.

[0017] 3. In order to increase the initial flow rate of the soybean protein liquid into the processing channel, thereby increasing the flow rate in the processing channel and reducing the problem of local temperature rise, the utility model sets up a liquid collecting cavity with different structures, through which the soybean protein liquid is quickly diverted to the processing channel.

[0018] 4. In order to solve the problem of high local temperature of the metal pipe, the utility model sets a cooler on the periphery of the metal pipe to achieve rapid heat dissipation through the cooler.

[0019] 5. The plant protein decomposition electrolysis structure designed by the utility model is simple and reasonably designed, and the temperature is uniform and the temperature rise fluctuation is low during the treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;

[0021] Figure 2 for Figure 1 Exploded diagram;

[0022] Figure 3 is a cross-sectional view of the built-in electrode rod;

[0023] Figure 4 for Figure 1 Three-dimensional image of the built-in electrode rod;

[0024] Figure 5 Schematic diagram of the structure of the cooler in Example 3 and Example 4;

[0025] Figure 6 This is a system structure diagram of Example 5;

[0026] Among them: 1 metal pipe, 2 built-in electrode rod, 3 insulating end cover, 4 radial guide groove, 5 liquid inlet, 6 liquid outlet, 7 sealing gasket, 8 liquid collecting cover, 10 heat sink, 11 cooling pipeline. DETAILED DESCRIPTION

[0027] The utility model is the plant protein decomposition electrode and the plant protein extraction system using the electrode. The plant protein comes from plant oil meal such as soybean meal, cottonseed meal, peanut meal, rapeseed meal, etc. For the sake of ease of description, this embodiment is introduced using soybean meal as an example. Example 1

[0028] like Figures 1 to 4As shown, the plant protein decomposition electrode is a device used to extract and process soy protein liquid. Its structure includes a metal pipe 1, an internal electrode rod 2, and an insulating end cap 3. The metal pipe 1 is a hollow cylindrical structure with a terminal, preferably made of food-grade stainless steel. The terminal of the metal pipe 1 is connected to the high-voltage terminal of the back-pressure boosting circuit, and the metal pipe 1 serves as a high-voltage electrode. The internal electrode rod 2 is a rod-shaped structure with a terminal, preferably made of food-grade stainless steel. The internal electrode rod 2 is located inside the metal pipe 1 and is coaxial with it. The internal electrode rod 2 can have one or two terminals. Preferably, there are two terminals, and any one of the terminals can be selected to connect to the ground terminal of the back-pressure boosting circuit, and the internal electrode rod 2 serves as the ground electrode. Because the inner diameter of the metal pipe 1 is larger than the outer diameter of the internal electrode rod 2, the gap between the two forms a processing channel for the soy protein liquid to flow through. When energized, an electric field is formed in the processing channel to perform high-voltage pulse treatment on the soy protein liquid. Because the smaller the distance between the metal pipe 1 and the internal electrode rod 2, the more uniform the electric field strength generated. This uniform electric field strength ensures that the soy protein liquid passing through the processing channel remains active, preventing excessive temperature rise in local areas due to uneven electric field distribution, which could damage the beneficial components in the soy protein liquid. Therefore, in this embodiment, the distance between the inner wall of the metal pipe 1 and the outer wall of the internal electrode rod 2 is set within the range of 1mm-10mm. This distance setting also takes into account the characteristics of different plants. In this embodiment, the preferred distance is 2.5mm.

[0029] Furthermore, in order to prevent the soy protein liquid from flowing too long in the metal pipe 1 due to its slow flow rate, which in turn causes the temperature of the soy protein liquid to be too high, this embodiment provides radial guide grooves 4 on the outer wall of the built-in electrode rod 2, which are evenly distributed circumferentially from the center of the ground electrode to the high-voltage electrode, and the radial guide grooves 4 serve as part of the processing channel. The bottom of the radial guide grooves 4 is in the shape of a concave arc, and the distance from the notch of the radial guide grooves 4 to the deepest part of the bottom is half the distance between the inner wall of the metal pipe 1 and the outer wall of the built-in electrode rod 2. After the bottom of the radial guide grooves 4 is set in an arc shape, the effective processing area of the soy protein liquid is increased, and the turbulent kinetic energy of the soy protein liquid in the processing channel is also increased. The increase in turbulent kinetic energy effectively improves the temperature rise and processing uniformity of the soy protein liquid.

[0030] The insulating end caps 3 are made of polytetrafluoroethylene and are secured to the metal pipe 1 at both ends with sealing gaskets 7. The two terminals of the internal electrode rod 2 extend from the metal pipe 1 through the insulating end caps 3, ensuring that the internal electrode rod 2 remains coaxial with the metal pipe 1. The inner wall of the metal pipe 1 and the two insulating end caps 3 together form a confined space within which the processing channel is located. A liquid inlet 5 and a liquid outlet 6, communicating with the processing channel, are provided on the sidewalls of the metal pipe 1 at both ends.

[0031] Further preferably, the liquid inlet 5 and the liquid outlet 6 are improved to increase the initial flow rate of the soy protein liquid entering the processing channel.

[0032] In order to increase the processing speed of the soy protein liquid within the metal pipe 1, in addition to increasing the flow rate of the soy protein liquid within the metal pipe 1, it can also be achieved by increasing the initial flow rate. Specifically, the outer wall of the metal pipe 1 at both ends is circumferentially distributed with a liquid inlet 5 and a liquid outlet 6. The soy protein liquid is first collected in the liquid collection cavity and then diverted through the liquid inlet 5 into the processing channel. The processed soy protein liquid flows out through the liquid outlet 6 and is collected in the liquid collection cavity.

[0033] The specific plan is: liquid collecting covers 8 are respectively provided on the outside of the liquid inlet 5 and the liquid outlet 6 of the metal pipe 1, and the liquid collecting covers 8 are sleeved and fixed on the outer wall of the metal pipe 1. At this time, the inner wall of the liquid collecting cover 8 and the outer wall of the metal pipe 1 are jointly enclosed to form an annular liquid collecting cavity, and the liquid inlet 5 and the liquid outlet 6 are respectively located in the corresponding liquid collecting cavities. Each liquid collecting cover 8 is also provided with a water collection port connected to the previous step or the next step.

[0034] Taking the liquid inlet 5 as an example, when in use, the soy protein liquid processed in the previous step is first collected in the liquid collection cover 8 through the water collection port, and then divided from each liquid inlet 5 into the processing channel of the metal pipe 1. The liquid outlet 6 is on the opposite side of the liquid inlet 5. The soy protein liquid treated by the electric field flows out from each liquid outlet 6 and is collected in the liquid collection cover 8, and then flows through the water collection port to the next step. Example 2

[0035] Example 2 provides a structure for increasing the initial flow rate that is different from that of Example 1.

[0036] A water diversion flange plate is installed between each insulating end cap 3 and the metal pipe 1. The water diversion flange plate and the inner wall of the insulating end cap 3 enclose a liquid collection chamber. Each insulating end cap 3 is also provided with a water collection port that communicates with the previous step or the next step. The water collection port is connected to the liquid collection chamber. The liquid inlet 5 and the liquid outlet 6 are respectively provided on the corresponding positions of the water diversion flange plate. The water diversion flange plate is a circular plate-shaped material with a certain thickness. Preferably, the material of the water diversion flange plate is the same as that of the insulating end cap 3. A plurality of guide holes are provided on the surface of the water diversion flange plate. The guide holes are provided on the inner side of the edge of the water diversion flange plate. After assembly, each guide hole corresponds to the processing channel.

[0037] Taking the liquid inlet 5 as an example, when in use, the soy protein liquid processed in the previous step is first collected into the liquid collecting chamber through the water collecting port, and then divided from each liquid inlet 5 into the processing channel in the metal pipe 1. The liquid outlet 6 is on the opposite side of the liquid inlet 5. The soy protein liquid treated by the electric field flows out from each liquid outlet 6 and is collected in the liquid collecting chamber, and then flows through the water collecting port to the next step.

[0038] When in use, the structure of Example 1 or Example 2 can be used alone, or the structures of Example 1 and Example 2 can be used in combination. For example, the liquid inlet 5 selects the structure of Example 1, and the liquid outlet 6 selects the structure of Example 2, or vice versa. The structures can be combined in any way according to needs. Example 3

[0039] In Example 3, a cooler is further provided on the basis of Example 1-2.

[0040] Since the temperature rise rate near the metal pipe 1 serving as the grounding electrode is faster than the temperature rise rate near the built-in electrode rod 2 serving as the high-voltage electrode, in order to reduce the temperature rise rate near the metal pipe 1, this embodiment adds a cooler to the outer wall of the metal pipe 1 to cool the metal pipe 1 through the cooler.

[0041] like Figure 5 As shown, the cooler consists of a plurality of heat sinks 10 fixed on the outer wall of the metal pipe 1. The heat sinks 10 are arranged at intervals along the length direction of the metal pipe 1. Each heat sink 10 can be circular or fan-shaped. Regardless of the form of the heat sink 10, each heat sink 10 is vertically fixed to the outer wall of the metal pipe 1 by welding and arranged according to a certain pattern. The heat sink 10 accelerates the reduction of the temperature of the metal pipe 1. Example 4

[0042] Example 4 provides a cooler structure different from that of Example 3.

[0043] like Figure 5As shown, the cooler includes a cooling pipe 11 wound around a metal pipe 1. A low-temperature cooling medium, such as cooling water, flows within the cooling pipe 11. The flowing low-temperature cooling medium cools the outer wall of the metal pipe 1, thereby alleviating excessive temperature rise in a certain area of the metal pipe 1, which could affect the quality of the soy protein liquid.

[0044] When in use, the structure of Example 3 or Example 4 can be used alone, or the structures of Example 3 and Example 4 can be used in combination. For example, half of the outer wall of the metal pipe 1 can be made of the structure of Example 3, and the other half can be made of the structure of Example 4. They can be combined in any way according to needs.

[0045] Working process:

[0046] The soy protein liquid to be treated enters the treatment channel from the liquid inlet 5. When the soy protein liquid flows, the electric field destroys its cell membrane and cell wall, making it easier for the protein and other useful components in the cells to be released. The treated soy protein liquid is discharged from the liquid outlet 6 and enters the next step process. Example 5

[0047] like Figure 6 As shown, the plant protein extraction system mainly includes: a soaking tank, a plant protein decomposition electrode, a centrifuge and a spray dryer.

[0048] The soaking tank is provided with a feeding port and a discharge port. The feeding port is used to feed the raw soybean meal into the soaking tank and soak it in low-temperature water at 5-7°C for at least 30 minutes. The specific soaking time is adjusted according to the different plant raw materials selected, and the protein extraction rate is improved by soaking; the soaked soybean protein liquid is sent to the plant protein decomposition electrode through a pipeline for high-voltage pulse treatment. In the absence of chemical treatment, the soybean protein is hydrolyzed by the continuous control of the electric field to form soybean small molecule polypeptides and free amino acids. The decomposed soybean protein liquid is finally centrifuged in a centrifuge and spray-dried in a spray dryer to form a soybean protein isolate product. The main improvement of this embodiment is that a plant protein decomposition electrode is added to the existing plant protein extraction system, and the soybean protein liquid is treated with an electric field to improve the extraction rate of soybean albumin and the purity of the product. Since other equipment in the existing system has not been modified, this embodiment only briefly introduces the main equipment in the existing system. In addition, the steps such as filtration and sterilization are not described in detail. It does not mean that the system does not include the corresponding equipment and process, but that too much elaboration is not given.

[0049] The above descriptions are merely preferred embodiments of the present invention. These embodiments are all different ways of implementing the overall concept of the present invention. The scope of protection of the present invention is not limited to these embodiments. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. Plant protein decomposition electrode, characterized in that, include: Metal pipe (1), built-in electrode rod (2), insulating end cover (3) and liquid collecting chamber, The metal pipe (1) is connected to the high-voltage end of the back-pressure boost circuit via a terminal, serving as a high-voltage electrode; The built-in electrode rod (2) is connected to the ground terminal of the back-pressure boost circuit via a terminal, serving as a ground electrode, and radial guide grooves (4) are uniformly distributed from the center of the ground electrode toward the high-voltage electrode in the circumferential direction of the outer wall of the built-in electrode rod (2); The insulating end caps (3) are two in number and enclose together with the metal pipe (1) to form a closed space. The built-in electrode rod (2) is coaxially arranged in the space and forms a processing channel for the soy protein liquid to flow through with the inner wall of the metal pipe (1), and the radial guide groove (4) is a part of the processing channel. The liquid collecting chamber is used to increase the flow rate of the soybean protein liquid flowing into or out of the processing channel. The liquid collecting chamber is located at both ends of the processing channel and is respectively connected to the liquid inlet (5) and the liquid outlet (6).

2. The plant protein decomposition electrode according to claim 1, wherein: Liquid collecting covers (8) are respectively provided outside the liquid inlet (5) and the liquid outlet (6) of the metal pipe (1); the liquid collecting cavity is an area enclosed by the liquid collecting cover (8) and the outer wall of the metal pipe (1); the liquid inlet (5) and the liquid outlet (6) are respectively opened on the side walls at both ends of the metal pipe (1), and the liquid inlet (5) and the liquid outlet (6) are both located in the corresponding liquid collecting covers (8).

3. The plant protein decomposition electrode according to claim 1, wherein: A water distribution flange plate is also installed between each insulating end cover (3) and the metal pipe (1). The liquid collecting chamber is located in the area enclosed between the water distribution flange plate and the inner wall of the insulating end cover (3). The liquid inlet (5) and the liquid outlet (6) are respectively opened on the water distribution flange plate at corresponding positions.

4. The plant protein decomposition electrode according to claim 2 or 3, characterized in that: The liquid inlet (5) and the liquid outlet (6) are both distributed in an annular shape.

5. The plant protein decomposition electrode according to claim 1, wherein: The bottom of the radial guide groove (4) is in a concave arc shape.

6. The plant protein decomposition electrode according to claim 1, wherein: A cooler for cooling is attached to the outer wall of the metal pipe (1).

7. The plant protein decomposition electrode according to claim 6, characterized in that: The cooler is composed of a plurality of heat sinks (10) fixed on the outer wall of a metal pipe (1), and each heat sink (10) is in the shape of a circular ring or a fan.

8. The plant protein decomposition electrode according to claim 6, wherein: The cooler comprises a cooling pipeline (11) wound around a metal pipe (1), wherein a low-temperature cooling medium flows in the cooling pipeline (11).

9. The plant protein decomposition electrode according to claim 1, wherein: The distance between the inner wall of the metal pipe (1) and the outer wall of the built-in electrode rod (2) is set in the range of 1 mm to 10 mm.

10. Plant protein extraction system, including: The soaking tank, centrifuge and spray dryer are characterized in that a plant protein decomposition electrode as described in any one of claims 1 to 9 is further provided between the soaking tank and the centrifuge.

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