Multifunctional alcohol soaking all-in-one machine for plant protein extraction

Abstract

The application discloses a multifunctional alcohol soaking all-in-one machine for plant protein extraction and relates to the technical field of plant protein extraction.The application comprises an outer cylinder, an inner cylinder, a gas driving cavity, an electromagnetic driving ring group, a supporting pool and the like.After being broken, rice bran is subjected to primary screening through a filtering assembly, is poured into the inner cylinder and is soaked with alcohol, and vibration and heating are used to accelerate the reaction.A sealing assembly is provided with a cover plate to monitor saturation of the solution.After the reaction, gravity drainage is combined with high-speed rotation to centrifugally separate alcohol, and a force-sensitive resistance sensor and a fine adjustment electric cylinder are used to maintain balance.When rotating at a low speed, hot air is blown in to accelerate volatilization.Alcohol is used to replace hexane, and the use of alcohol is green and environmentally friendly, and the protein concentration is improved.The application can be followed by alkaline extraction and purification.

Description

Technical Field

[0001] This invention relates to the field of plant protein extraction technology, specifically to a multifunctional alcohol soaking machine for plant protein extraction. Background Technology

[0002] In existing technologies, plant protein extraction mainly relies on traditional solvents such as hexane to soak and extract oil from rice bran, separating non-polar components and increasing protein concentration. This method typically involves simple crushing, soaking in containers, and manual filtration. The rice bran is first crushed to increase its surface area, then immersed in a solvent and stirred to react. After the reaction, the solvent is separated by gravity or simple pressure filtration, and finally, residual solvent is dried naturally or in an oven. The equipment is often separate, such as a separate crusher, soaking tank, and centrifuge, requiring multiple material transfers. Disadvantages include: solvents such as hexane are highly toxic, volatile, and cause environmental pollution, and are non-renewable; the uneven diameter of the rice bran powder leads to low solvent penetration efficiency, incomplete extraction, and slow oil release; the separation process relies on manual operation, resulting in high alcohol residue levels, affecting protein purity. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: a multifunctional alcohol soaking machine for plant protein extraction, comprising an outer cylinder capable of rotating within a support tank, an inner cylinder disposed inside the outer cylinder, the tops of the outer cylinder and the inner cylinder being fixedly connected, a gap being provided between the outer cylinder and the inner cylinder, a plurality of ceramic heating elements being fixedly disposed in the gap, a plurality of air blowing ports being provided at the bottom of the circumferential surface of the inner cylinder, the air blowing ports penetrating the inner cylinder tangentially; an alcohol separation mesh mounting ring being fixedly and sealed at the bottom of the outer cylinder and the inner cylinder in a manner that is easy to disassemble, an alcohol separation mesh being fixedly and sealed inside the alcohol separation mesh mounting ring, the alcohol separation mesh being used to separate rice bran from alcohol, a hopper being fixedly and sealed on the alcohol separation mesh mounting ring in a manner that is easy to disassemble, an electric valve being fixedly and sealed at the bottom of the hopper; a sealing ring being slidably disposed inside the inner cylinder at the positions of all air blowing ports, the sealing ring being able to completely block all air blowing ports, and a heating wire being disposed inside the sealing ring. The sealing ring is driven by three adjusting electric cylinders. The adjusting electric cylinders are fixedly installed in the gap between the inner and outer cylinders. The telescopic cylinder of the adjusting electric cylinder is fixed to the inner cylinder. The end of the telescopic rod of the adjusting electric cylinder is fixed to the bottom edge of the sealing ring through a connector. The connector is slidably set in the air inlet at the corresponding position, so that the connector connects and fixes the sealing ring to the end of the telescopic rod of the adjusting electric cylinder.

[0004] Preferably, two pressure-regulating rings are fixedly installed on the circumferential surface of the outer cylinder, with a space between the two pressure-regulating rings. A collar is provided between the two pressure-regulating rings, and the collar is slidably fitted onto the surface of the outer cylinder. Force-sensitive resistor sensors are provided on the contact surfaces between the collar and the two pressure-regulating rings.

[0005] Preferably, two rotating support plates are symmetrically positioned on the axis of rotation of the support pool and the outer cylinder. The rotating support plates are rotatably fitted with the support pool. A second support plate and a first support plate are fixedly installed at both ends of each rotating support plate. A rotating guide slide rod is fixed between the first support plate and the second support plate, wherein a collar is slidably installed on the two rotating guide slide rods. The support pool is fixedly installed on the flange base.

[0006] Preferably, a fine-tuning electric cylinder is fixedly installed on the second support plate, and the end of the telescopic rod of the fine-tuning electric cylinder is fixedly engaged with a collar, so that the telescopic rods of the two fine-tuning electric cylinders move synchronously; a counterweight is fixedly installed on the first support plate in a way that allows for easy disassembly, to improve the stability of the rotating support plate during rotation. A splash guard is also movably installed on the support pool, and the splash guard can be tightly fastened to the support pool to form a sealed space. A drain port is provided at the bottom of the support pool. Two electric motors are fixedly installed on the support pool, and the two rotating support plates are driven by two electric motors respectively.

[0007] Preferably, a gas drive chamber is fixedly installed at the top of the outer cylinder and the inner cylinder. The interior of the gas drive chamber is connected to the gap between the outer cylinder and the inner cylinder through a skirt channel ring. Multiple air inlets are opened on the inner circumferential surface of the gas drive chamber. A permanent magnet drive plate is rotatably installed on the top surface of the inner wall of the gas drive chamber. Multiple blades arranged in a circular array are fixedly installed on the lower surface of the permanent magnet drive plate.

[0008] Preferably, an electromagnetic drive ring assembly is fixedly mounted on the outer surface of the gas drive cavity. The electromagnetic drive ring assembly contains multiple sets of electromagnetic windings, and multiple permanent magnets are embedded in the permanent magnet drive plate, which magnetically engage with the electromagnetic windings of the electromagnetic drive ring assembly, thus forming an axial flux motor structure between the electromagnetic drive ring assembly and the permanent magnet drive plate.

[0009] Preferably, a filter assembly or a sealing assembly can be installed on the electromagnetic drive ring assembly; wherein the filter assembly includes a rubber cylinder, a support skirt, a vibration generator, and a primary screen, the support skirt is fixedly installed on the top of the outer surface of the rubber cylinder for overlapping the electromagnetic drive ring assembly, the primary screen is fixedly installed on the bottom of the rubber cylinder, and the vibration generator is fixedly installed on the bottom of the inner side of the rubber cylinder for causing the primary screen to shake.

[0010] Preferably, the sealing assembly includes a cover plate, a central cavity, a knob cover, a lead screw shaft, a nut pressure block, two connecting rods, and two compression push rods. The two compression push rods are symmetrically slidably disposed inside the cover plate along its radial direction. The central cavity is a space opened at the center of the cover plate. The lead screw shaft, the nut pressure block, and the two connecting rods are disposed in the central cavity. A knob cover is rotatably mounted on the outside of the central cavity. The lead screw shaft is fixed at the axial center of the knob cover. The nut pressure block is threaded onto the lead screw shaft. The nut pressure block and the two compression push rods are movably connected by the two connecting rods.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention integrates a filter component and a vibration generator to perform initial screening after the rice bran is crushed, ensuring that the diameter of the rice bran powder is uniform, thereby improving the penetration efficiency of the alcohol solvent and avoiding the problem of uneven extraction caused by large particles of rice bran. At the same time, the vibration generator embedded in the alcohol separation mesh ring generates micro-vibration during the alcohol soaking process, accelerating the reaction between alcohol and rice bran and promoting the release of oils and active substances such as γ-oryzanol and vitamin E. It not only improves the extraction saturation, but also accelerates the diffusion process through temperature control (ceramic heating plate and heating wire maintain about 80°C), reducing the reaction time and improving the overall extraction rate compared with the traditional method. The quick installation and disassembly mechanism of the sealing components ensures the safety and convenience of operation, prevents the evaporation of alcohol from causing environmental pollution, and achieves green extraction; (2) In the alcohol and rice bran separation stage, the integrated machine adopts an alcohol separation net and electric valve combined with gravity drainage to quickly discharge the alcohol solution. Then, the residual alcohol is further separated by centrifugal force through high-speed rotation (200 rpm), avoiding the problem of reduced protein purity caused by excessive residual alcohol in traditional filtration methods. The dynamic balance system includes a force-sensitive resistor sensor to monitor the change of centrifugal force in real time and a fine-tuning electric cylinder to adjust the position of the collar ring, ensuring the stability of the outer cylinder during rotation and preventing damage caused by equipment vibration or imbalance. At the same time, the sealed design of the support pool and splash cover prevents alcohol from splashing out, improves the safety of operation, and connects to the recovery pipe through the drain port to realize the recycling of alcohol, reducing costs and environmental impact; (3) When rotating at low speed (40 rpm), the invention forms a centrifugal pump through the rotation of blades, drives hot air to be heated by ceramic heating plates and blown tangentially into the inner cylinder, fully contacting the rice bran and accelerating the evaporation of residual alcohol. This hot air drying method is more efficient than traditional natural air drying or oven drying, avoiding the damage of proteins caused by high temperatures. The whole process is environmentally friendly, using alcohol instead of traditional hexane solvent to reduce toxicity risks, and keeping the rice bran loose by vibration to improve volatilization efficiency, ultimately increasing the relative concentration of protein and providing a better foundation for subsequent alkaline extraction and purification; (4) The integrated design of the sensitive resistor and constant pressure ring allows for real-time monitoring of changes in the weight of rice bran, ensuring precise control of the input amount and avoiding excessive or insufficient input that could affect the consistency of extraction. It is more accurate than traditional manual weighing and reduces human error; (5) This invention uses alcohol as a green solvent, combined with temperature and vibration control, to achieve oil separation without damaging the protein structure. Compared with traditional hexane extraction, it is less toxic, renewable, and reduces environmental pollution. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 This is a cross-sectional view of the support pool structure of the present invention.

[0014] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle.

[0015] Figure 4 This is a schematic diagram of the alcohol separation mesh structure of the present invention.

[0016] Figure 5 This is a schematic diagram of the sealing assembly structure of the present invention.

[0017] Figure 6 This is a schematic diagram of the filter component structure of the present invention.

[0018] Figure 7 This is a schematic diagram of the gas-driven cavity structure of the present invention.

[0019] Figure 8 This is a schematic diagram of the outer cylinder structure of the present invention.

[0020] Figure 9 This is a diagram showing the installation position of the sealing ring of the present invention.

[0021] In the diagram: 101-Outer cylinder; 102-Alcohol separation mesh mounting ring; 103-Alcohol separation mesh; 104-Basin cover; 105-Electric valve; 106-Gas drive chamber; 107-Electromagnetic drive ring assembly; 108-Permanent magnet drive plate; 109-Blade; 110-Skirt channel ring; 111-Inner cylinder; 112-Air inlet; 113-Ceramic heating plate; 114-Sealing ring; 115-Adjusting electric cylinder; 116-Connector; 117-Air outlet; 201-Cover plate; 202-Central cavity; 203-Knob cover; 204- 205-Screw shaft; 206-Nut pressure block; 207-Connecting rod; 208-Extrusion push rod; 209-Support skirt; 210-Vibration generator; 211-Primary screen; 301-Support pool; 302-Splash cover; 303-Flange base; 304-Drain port; 305-Motor; 306-Rotating support plate; 307-Fine-adjustment electric cylinder; 308-Rotating guide slide rod; 309-Collar ring; 310-First support plate; 311-Constant pressure ring; 312-Force-sensitive resistor sensor; 313-Second support plate. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-9 The technical solution of the present invention will be further illustrated through specific embodiments.

[0023] This invention provides a multifunctional alcohol soaking machine for plant protein extraction, comprising an outer cylinder 101 capable of rotating within a support tank 301, an inner cylinder 111 disposed inside the outer cylinder 101, the tops of the outer cylinder 101 and the inner cylinder 111 being fixedly connected, a gap being provided between the outer cylinder 101 and the inner cylinder 111, and multiple ceramic heating elements 113 being fixedly disposed in the gap; multiple air inlets 117 being provided at the bottom of the circumferential surface of the inner cylinder 111, the air inlets 117 penetrating the inner cylinder 111 tangentially; the bottoms of the outer cylinder 101 and the inner cylinder 111 are fixed in a manner that facilitates disassembly. An alcohol separation mesh mounting ring 102 is fixedly installed in a sealed manner. An alcohol separation mesh 103 is fixedly installed on the inner side of the alcohol separation mesh mounting ring 102. The alcohol separation mesh 103 is used to separate rice bran from alcohol. A hopper cover 104 is fixedly and sealed on the alcohol separation mesh mounting ring 102 in a way that is easy to disassemble. An electric valve 105 is fixed at the bottom of the hopper cover 104. A sealing ring 114 is slidably arranged on the inner side of the inner cylinder 111 at the position of all the air blowing ports 117. The sealing ring 114 can completely block all the air blowing ports 117. A heating wire is provided inside the sealing ring 114. The sealing ring 114 is driven by three adjusting electric cylinders 115. The adjusting electric cylinders 115 are fixedly installed in the gap between the inner cylinder 111 and the outer cylinder 101. The telescopic cylinder of the adjusting electric cylinder 115 is fixed to the inner cylinder 111. The end of the telescopic rod of the adjusting electric cylinder 115 is fixed to the bottom edge of the sealing ring 114 through the connector 116. The connector 116 is slidably set in the air outlet 117 at the corresponding position, so that the connector 116 connects and fixes the sealing ring 114 to the end of the telescopic rod of the adjusting electric cylinder 115.

[0024] Two pressure-regulating rings 311 are fixedly installed on the circumferential surface of the outer cylinder 101, with a space between them. A collar 309 is provided between the two pressure-regulating rings 311, and the collar 309 slides on the surface of the outer cylinder 101. Force-sensitive resistor sensors 312 are provided on the contact surfaces of the collar 309 and the two pressure-regulating rings 311. Two rotating support plates 306 are symmetrically arranged with respect to the rotation axis of the support pool 301 and the outer cylinder 101. The rotating support plates 306 are rotatably engaged with the support pool 301. A second support plate 313 and a first support plate 310 are fixedly installed at both ends of each rotating support plate 306, respectively. A rotating guide rod 308 is fixed between the first support plate 310 and the second support plate 313, and the collar 309 is slidably mounted on the two rotating guide rods 308. The support pool 301 is fixedly installed on the flange base 303. A fine-tuning electric cylinder 307 is fixedly installed on the second support plate 313. The end of the telescopic rod of the fine-tuning electric cylinder 307 is fixedly engaged with the collar 309, and the telescopic rods of the two fine-tuning electric cylinders 307 move synchronously. A counterweight is fixedly installed on the first support plate 310 in a way that allows for easy disassembly, to improve the stability of the rotating support plate 306 during rotation. A splash guard 302 is also movably installed on the support pool 301. The splash guard 302 and the support pool 301 can be sealed together to form a sealed space. A drain port 304 is provided at the bottom of the support pool 301. Two electric motors 305 are fixedly installed on the support pool 301, and the two rotating support plates 306 are driven by the two electric motors 305 respectively.

[0025] A gas drive chamber 106 is fixedly installed at the top of the outer cylinder 101 and the inner cylinder 111. The interior of the gas drive chamber 106 is connected to the gap between the outer cylinder 101 and the inner cylinder 111 through a skirt channel ring 110. Multiple air inlets 112 are opened on the inner circumferential surface of the gas drive chamber 106. A permanent magnet drive plate 108 is rotatably installed on the top surface of the inner wall of the gas drive chamber 106. Multiple circularly arrayed blades 109 are fixedly installed on the lower surface of the permanent magnet drive plate 108. An electromagnetic drive ring assembly 107 is fixedly installed on the outer surface of the gas drive chamber 106. Multiple sets of electromagnetic windings are arranged inside the electromagnetic drive ring assembly 107. Multiple permanent magnets that are magnetically engaged with the electromagnetic windings on the electromagnetic drive plate 108 are embedded in the permanent magnet drive plate 108, so that an axial flux motor structure is formed between the electromagnetic drive ring assembly 107 and the permanent magnet drive plate 108.

[0026] A filter assembly or a sealing assembly can be installed on the electromagnetic drive ring assembly 107; wherein the filter assembly includes a rubber cylinder 208, a support skirt 209, a vibration generator 210, and a primary screen 211. The support skirt 209 is fixedly installed on the top of the outer surface of the rubber cylinder 208 for overlapping the electromagnetic drive ring assembly 107. The primary screen 211 is fixedly installed on the bottom of the rubber cylinder 208. The vibration generator 210 is fixedly installed on the bottom of the inner side of the rubber cylinder 208 for causing the primary screen 211 to shake. The sealing assembly includes a cover plate 201, a central cavity 202, a knob cover 203, a lead screw shaft 204, a nut pressure block 205, two connecting rods 206, and two compression push rods 207. The two compression push rods 207 are symmetrically slidably disposed inside the cover plate 201 along the radial direction of the cover plate 201. The central cavity 202 is a space opened at the center of the cover plate 201. The lead screw shaft 204, the nut pressure block 205, and the two connecting rods 206 are disposed in the central cavity 202. The knob cover 203 is rotatably mounted on the outside of the central cavity 202. The lead screw shaft 204 is fixed at the axial center of the knob cover 203. The nut pressure block 205 is threaded onto the lead screw shaft 204. The nut pressure block 205 and the two compression push rods 207 are movably connected by the two connecting rods 206.

[0027] First, the rice bran is crushed to increase the surface area, improving the subsequent solvent penetration efficiency and facilitating the release of oils and proteins. The filter assembly is inserted into the electromagnetic drive ring assembly 107. The crushed rice bran is poured into the rubber cylinder 208, and the vibration generator 210 is activated. The vibration generator 210 generates vibration, which helps the crushed rice bran powder pass through the primary sieve 211, while powders with excessively large diameters cannot pass through, effectively ensuring the consistency of subsequent penetration efficiency. The required weight of rice bran powder is poured into the inner cylinder 111. This weight is detected by a force-sensitive resistor sensor 312 located on the top side (the weight is applied to the constant pressure ring 311 via the outer cylinder 101, and then to the force-sensitive resistor sensor 312; the force-sensitive resistor sensor 312 detects the change in the mass of the rice bran, and stops pouring rice bran into the inner cylinder 111 when the required weight is reached). Then, the filter assembly is removed, and alcohol is added to the inner cylinder 111 and stirred to react. (A vibration generator 210 is also embedded inside the alcohol separation mesh mounting ring 102. The vibration generator 210 is used to generate microscopic vibrations in the rice bran inside the inner cylinder 111, thereby accelerating the reaction between alcohol and rice bran. Furthermore, after the alcohol separates from the rice bran, the activated vibration generator 210 helps to keep the rice bran in a loose state.) Alcohol is a polar solvent that can effectively dissolve non-polar components in rice bran, such as oils (rice bran oil, including active substances such as γ-oryzanol and vitamin E), while also providing some protection to proteins. The reaction is essentially a solvent extraction, not a chemical reaction: alcohol molecules penetrate the cell walls of the rice bran, dissolving lipids to form a solution. Increasing the temperature (e.g., to 80°C, controlled by the heating wire inside the ceramic heating element 113 and the sealing ring 114) can accelerate diffusion and improve the extraction rate. If aqueous ethanol is used, water can help dissolve some hydrophilic compounds, but too much water will reduce the solubility of oils. The reaction reaching a certain level usually refers to the saturation of oil extraction (monitoring indicators such as the solution color darkening can be observed by setting an anti-fogging camera and supplementary light on the side of the cover plate 201 located inside the inner cylinder 111). Before the reaction, the sealing assembly needs to be installed on the electromagnetic drive ring assembly 107. The cover plate 201 is then fastened onto the electromagnetic drive ring assembly 107. The knob cover 203 is then rotated, which drives the lead screw shaft 204 to rotate. The lead screw shaft 204 drives the nut pressure block 205 to move axially. The nut pressure block 205 drives the two extrusion push rods 207 to move relative to each other through two connecting rods 206. At this time, the two extrusion push rods 207 are driven to move away from each other, and the two extrusion push rods 207 extrude pressure on the inner side of the electromagnetic drive ring assembly 107, thereby achieving the fixed relationship between the cover plate 201 and the electromagnetic drive ring assembly 107. A sealing ring is provided between the cover plate 201 and the electromagnetic drive ring assembly 107. Conversely, when the two extrusion push rods 207 approach each other, the extrusion push rods 207 separate from the inner side of the electromagnetic drive ring assembly 107. At this time, the sealing assembly can be removed to facilitate the processing of the next batch of rice bran.

[0028] After the alcohol and rice bran have reacted (the specific time depends on the process requirements and the content of the rice bran), the splash guard 302 is fastened onto the support tank 301 (with a snap fastener to prevent separation). The electric valve 105 is then opened, and the alcohol inside the inner cylinder 111 flows out through the alcohol separation net 103 under the action of gravity, and is finally discharged through the drain port 304, which is connected to the alcohol recovery pipe. Wait until the alcohol stops flowing from the electric valve 105 before starting the motor 305. The motor 305 drives the rotating support plate 306 to rotate, which in turn drives the rotating guide slide rod 308, the first support plate 310, and the second support plate 313 to rotate together. The collar 309 on the rotating guide slide rod 308 will then rotate, causing the outer cylinder 101 to rotate. The outer cylinder 101 as a whole will then rotate, thereby causing the rice bran inside the inner cylinder 111 to rotate. At high speed (e.g., 200 revolutions per minute), the rice bran will rotate at high speed, causing it to gather on one side of the inner cylinder 111. Under the action of centrifugal force, the alcohol... The alcohol will be further separated from the rice bran, thus accelerating the removal of alcohol. During this process, due to the continuous separation of alcohol, the rotation of the outer cylinder 101 will become unbalanced. At this time, the position of the collar 309 on the rotation guide slide 308 is dynamically adjusted by two fine-tuning electric cylinders 307 (the telescopic rod of the fine-tuning electric cylinder 307 drives the collar 309 to move axially on the two rotation guide slides 308), thereby shifting the overall rotation axis of the outer cylinder 101 and keeping the outer cylinder 101 in a state of dynamic balance. The two force-sensitive resistor sensors 312 can monitor the changes in centrifugal force on the outer cylinder 101 in real time during the rotation process. Finally, its low-speed rotation is controlled. When rotating at low speed (e.g., 40 revolutions per minute), the rice bran sways inside the inner cylinder 111. At the same time, the axial flux motor composed of the electromagnetic drive ring group 107 and the permanent magnet drive plate 108 is started, which drives the blade 109 to rotate in the gas drive chamber 106 (forming a centrifugal pump). This causes the air in the inner cylinder 111 to enter the gas drive chamber 106 through the air inlet 112, and then be discharged into the gap between the outer cylinder 101 and the inner cylinder 111 through the skirt channel ring 110. The air is heated by the ceramic heating plate 113 and finally flows tangentially into the inner cylinder 111 through the air blowing port 117, contacting the rice bran inside the inner cylinder 111, thereby accelerating the evaporation of residual alcohol in the rice bran. Before this, it is necessary to control the adjusting electric cylinder 115. The adjusting electric cylinder 115 drives the sealing ring 114 to move upward, so that the sealing ring 114 does not block all the air blowing ports 117. The rotating airflow will cause the rice bran to come into full contact with the hot air, so as to accelerate the removal of alcohol (a small amount of rice bran powder will enter between the outer cylinder 101 and the inner cylinder 111, because the diameter of the rice bran powder has been screened by the filter component beforehand to prevent excessively large rice bran from clogging the air inlet 112 and the air outlet 117).

[0029] Alcohol, as a green solvent (low toxicity, renewable), replaces traditional hexane to achieve oil separation and increase the relative concentration of protein. This process is environmentally friendly and efficient; the purity of the protein depends on the purity of the alcohol and subsequent purification. For higher purity, an alkaline extraction step can be added after filtration: dissolve the protein in an alkaline solution with pH 9-11, then acidify to pH 4-5 to precipitate, and finally centrifuge.

Claims

1. A multifunctional alcohol soaking machine for extracting plant proteins, characterized in that: It includes an outer cylinder (101) that can rotate within a support pool (301), an inner cylinder (111) is provided inside the outer cylinder (101), the top of the outer cylinder (101) and the inner cylinder (111) are fixedly connected, a gap is provided between the outer cylinder (101) and the inner cylinder (111), a plurality of ceramic heating plates (113) are fixedly provided in the gap, and a plurality of air blowing ports (117) are provided at the bottom of the circumferential surface of the inner cylinder (111), and the air blowing ports (117) penetrate the inner cylinder (111) along the tangent of the inner cylinder (111); The bottom of the outer cylinder (101) and the inner cylinder (111) are fixedly and sealed with an alcohol separation net mounting ring (102) in a way that is easy to disassemble. An alcohol separation net (103) is fixedly installed on the inner side of the alcohol separation net mounting ring (102). The alcohol separation net (103) is used to separate rice bran from alcohol. A sealing ring (114) is slidably provided on the inner side of the inner cylinder (111) at the position of all the air blowing ports (117). The sealing ring (114) can completely block all the air blowing ports (117). A heating wire is provided inside the sealing ring (114).

2. The multifunctional alcohol soaking machine for plant protein extraction according to claim 1, characterized in that: Two pressure rings (311) are fixedly installed on the circumferential surface of the outer cylinder (101). There is a space between the two pressure rings (311). A collar (309) is provided between the two pressure rings (311). The collar (309) is slidably fitted on the surface of the outer cylinder (101). Force-sensitive resistor sensors (312) are provided on the contact surfaces of the collar (309) and the two pressure rings (311).

3. The multifunctional alcohol soaking machine for plant protein extraction according to claim 2, characterized in that: Two rotating support plates (306) are symmetrically positioned on the rotation axis of the support pool (301) and the outer cylinder (101). The rotating support plates (306) are rotatably engaged with the support pool (301). A second support plate (313) and a first support plate (310) are fixedly installed at both ends of each rotating support plate (306). A rotating guide slide rod (308) is fixed between the first support plate (310) and the second support plate (313). A collar (309) is slidably installed on the two rotating guide slide rods (308).

4. The multifunctional alcohol soaking machine for plant protein extraction according to claim 3, characterized in that: A fine-tuning electric cylinder (307) is fixedly installed on the second support plate (313). The end of the telescopic rod of the fine-tuning electric cylinder (307) is fixedly engaged with the collar (309). The telescopic rods of the two fine-tuning electric cylinders (307) move synchronously. A counterweight block is fixed on the first support plate (310) in a way that is easy to disassemble, which is used to improve the stability of the rotating support plate (306) in the rotating state.

5. A multifunctional alcohol soaking machine for plant protein extraction according to claim 4, characterized in that: A gas drive chamber (106) is fixedly installed at the top of the outer cylinder (101) and the inner cylinder (111). The interior of the gas drive chamber (106) is connected to the gap between the outer cylinder (101) and the inner cylinder (111) through the skirt channel ring (110). Multiple air inlets (112) are opened on the inner circumferential surface of the gas drive chamber (106). A permanent magnet drive plate (108) is rotatably installed on the top surface of the inner wall of the gas drive chamber (106). Multiple blades (109) arranged in a circular array are fixedly installed on the lower surface of the permanent magnet drive plate (108).

6. A multifunctional alcohol soaking machine for plant protein extraction according to claim 5, characterized in that: An electromagnetic drive ring assembly (107) is fixedly installed on the outer surface of the gas drive chamber (106).

7. A multifunctional alcohol soaking machine for plant protein extraction according to claim 6, characterized in that: A filter assembly or a sealing assembly can be installed on the electromagnetic drive ring assembly (107); wherein the filter assembly includes a rubber cylinder (208), a support skirt (209), a vibration generator (210), and a primary screen (211). The support skirt (209) is fixedly installed on the top of the outer surface of the rubber cylinder (208) for overlapping on the electromagnetic drive ring assembly (107). The primary screen (211) is fixedly installed on the bottom of the rubber cylinder (208). The vibration generator (210) is fixedly installed on the bottom of the inner side of the rubber cylinder (208) for causing the primary screen (211) to shake.

8. A multifunctional alcohol soaking machine for plant protein extraction according to claim 7, characterized in that: The sealing assembly includes a cover plate (201), a central cavity (202), a knob cover (203), a lead screw shaft (204), a nut clamping block (205), two connecting rods (206), and two compression push rods (207). The two compression push rods (207) are symmetrically slidably arranged inside the cover plate (201) along the radial direction of the cover plate (201). The central cavity (202) is the space opened at the center of the cover plate (201). The lead screw shaft (204) is located in the center of the cover plate (205). 04) The nut pressure block (205) and two connecting rods (206) are set in the central cavity (202). A knob cover (203) is rotatably installed on the outside of the central cavity (202). A lead screw shaft (204) is fixed at the axial position of the knob cover (203). The nut pressure block (205) is threaded on the lead screw shaft (204). The nut pressure block (205) and the two extrusion push rods (207) are movably connected through two connecting rods (206).

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