Preparation device and preparation method of compound peanut oil

Abstract

The preparation device comprises a mixing tank, a stirring device and a microbubble generating device are arranged in the mixing tank, the microbubble generating device is composed of a bottom mounting disc and a side wall mounting ring, microbubbles are injected through a first micropore and a second micropore respectively, and the micropores are conical and coated with hydrophobic nano coatings. The pulse airflow device controls airflow through an electromagnetic pulse valve to generate microbubbles. An ultrasonic oscillation device is further arranged at the bottom of the mixing tank, the stirring device comprises a high-shear stirring structure and an auxiliary stirring structure, and the mixing efficiency is enhanced through reverse driving. The preparation method comprises the steps of feeding, micro-bubble injection, gas-liquid synergistic emulsification, gas-liquid auxiliary emulsification and ultrasonic oscillation. Through the synergistic effect of microbubble injection, high shear and ultrasonic oscillation, the mixing uniformity of peanut oil and ingredients is improved, and the mixing time is shortened. The microporous coating and pulse adjustment ensure stable operation of the device, the maintenance period is prolonged to once a month, and the device is suitable for industrial production.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing equipment, and particularly relates to a device and method for preparing compound peanut oil, which is particularly suitable for realizing efficient mixing and emulsification of peanut oil raw materials through microbubble injection, gas-liquid synergistic emulsification and ultrasonic oscillation technology. Background Art

[0002] Peanut oil, as a common edible oil, is widely popular due to its unique flavor and nutritional value. During the production process of compound peanut oil, it is usually necessary to mix peanut oil raw materials with other ingredients to improve its performance or endow it with specific functions. However, in traditional mixing processes, problems such as uneven mixing, oil stratification or poor emulsification effect are often faced, resulting in unstable product quality. In addition, existing preparation devices have low efficiency in dealing with the dispersion of tiny droplets and gas-liquid mixing, and it is difficult to meet the requirements of modern industrial production for high-quality compound peanut oil.

[0003] In recent years, microbubble technology and ultrasonic technology have gradually been applied to the field of liquid mixing. Microbubbles, due to their small volume and large specific surface area, can enhance the gas-liquid interface effect, while ultrasonic oscillation can promote the dispersion and mixing between molecules through cavitation effects. However, there is currently a lack of a preparation device that comprehensively utilizes microbubble injection, high-shear stirring and ultrasonic oscillation in the market, and it is difficult to achieve the efficient preparation of compound peanut oil. Therefore, there is an urgent need for a device and method that can overcome the above defects. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a device and method for preparing compound peanut oil, which can achieve efficient mixing and emulsification of peanut oil raw materials and ingredients through the synergistic effect of a microbubble generating device, a high-shear stirring structure and an ultrasonic oscillation device, and improve product quality and production efficiency.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: To achieve the above purpose, it includes a mixing tank, a stirring device is arranged inside the mixing tank, a microbubble generating device is arranged in the mixing tank, the microbubble generating device includes a mounting plate arranged at the bottom of the mixing tank, a first air passage is arranged inside the mounting plate, a first micro-hole is connected to the first air passage, and the first micro-hole is communicated with the inside of the mixing tank.

[0006] Further, the first air passage is an annular passage, a first air duct is arranged on one side of the first air passage, one end of the first air duct is connected to a pulsed gas flow device; the pulsed gas flow device includes a gas storage tank, the first air duct is communicated with the gas storage tank, and a first electromagnetic pulse valve is arranged on the first air duct, a pressure sensor is arranged inside the gas storage tank, and an air pump is connected to the gas storage tank.

[0007] Furthermore, the microbubble generating device further includes a mounting ring provided on the side wall of the mixing tank. A second ventilation channel is provided inside the mounting ring. A second micropore is connected to the second ventilation channel. The second ventilation channel is also an annular channel. A second gas pipe is provided on one side of the second ventilation channel. One end of the second gas pipe communicates with the gas storage tank, and a second electromagnetic pulse valve is provided on the second gas pipe.

[0008] Furthermore, both the first micropore and the second micropore are conical holes, and a hydrophobic nano-coating or an amphiphilic molecular layer is coated on the pore walls of the first micropore and the second micropore.

[0009] Furthermore, an ultrasonic oscillation device is further provided at the bottom of the mixing tank. The ultrasonic oscillation device includes an oscillation disk provided at the bottom of the mixing tank, a transducer provided at the lower end of the oscillation disk, and an ultrasonic generator connected to the transducer; an installation hole is provided in the middle of the installation disk, and the side surface of the oscillation disk is connected to the hole wall of the installation hole through a flexible ring.

[0010] Furthermore, the flexible ring is bonded to the oscillation disk and the installation disk together through silicone glue. The flexible ring is made of one of silicone rubber, polyurethane elastomer, thermoplastic elastomer, and rubber film.

[0011] Furthermore, the stirring device includes a high-shear stirring structure and an auxiliary stirring structure. The high-shear stirring structure includes a stirring shaft, and a rotor is provided at the end of the stirring shaft; the auxiliary stirring structure includes a stirring tube sleeved outside the stirring shaft, and a stator is provided at the end of the stirring tube. The stator is an annular structure and covers the outside of the rotor, and through grooves penetrating the inside and outside of the stator are arranged in the stator array.

[0012] Furthermore, auxiliary stirring blades are further provided on the outer periphery of the stirring tube. The stirring tube rotates in the opposite direction to the stirring shaft, and the rotation speed of the stirring tube is lower than that of the stirring shaft.

[0013] Furthermore, the stirring tube and the stirring shaft are driven through a driving structure. The driving structure includes a motor. The output end of the motor is connected to the stirring shaft, and a first transmission gear is provided on the stirring shaft. The first transmission gear meshes with a second transmission gear, the second transmission gear meshes with a third transmission gear, the third transmission gear meshes with a fourth transmission gear, and the fourth transmission gear is key-connected to the stirring tube.

[0014] Furthermore, a fifth transmission gear is added between the third transmission gear and the fourth transmission gear.

[0015] Further, a liquid spraying structure is provided at the top inside the mixing tube. The liquid spraying structure includes a pump body, a liquid suction tube connected to the pump body, and an infusion tube. The infusion tube is connected with an atomizing nozzle, and the atomizing nozzle is arranged at the top inside the mixing tank.

[0016] The present invention also provides a preparation method of compound peanut oil. Using the preparation device of compound peanut oil described in any one of the above, the method includes the following steps: 1. Feeding: The peanut oil raw material and ingredients are added to the mixing tank according to a predetermined ratio. 2. Microbubble injection: The first electromagnetic pulse valve and the second electromagnetic pulse valve control the pulsed air flow. The air flow outputs from the first microhole and the second microhole to generate microbubbles and inject them into the raw materials inside the mixing tank. 3. Gas-liquid synergistic emulsification: The high-shear stirring structure performs high-speed shearing on the raw materials inside the mixing tank and breaks the microbubbles. The microbubble explosion generates micro-impacts to break the liquid droplets. 4. Gas-liquid assisted emulsification: The auxiliary stirring structure cooperates with the high-shear stirring structure to enhance the mixing efficiency and at the same time guide the flow direction of the microbubbles. 5. Ultrasonic oscillation: The ultrasonic generator drives the transducer to make the oscillation disk generate ultrasonic vibration, further dispersing the microbubbles and enhancing the mixing effect between the raw material molecules.

[0017] The beneficial effects are as follows: 1. In the present invention, microbubbles are injected at the bottom and side walls of the mixing tank through the microbubble generating device. By utilizing the high specific surface area and explosion effect of the microbubbles, the interaction between the peanut oil raw material and the ingredients at the gas-liquid interface is significantly enhanced. Compared with the traditional stirring process, microbubble injection can improve the mixing uniformity, effectively avoid oil stratification and non-uniformity phenomena, and at the same time shorten the mixing time.

[0018] 2. The synergistic effect of the high-shear stirring structure and the auxiliary stirring structure realizes the refinement of liquid droplets and the directional guidance of microbubbles through high-speed shearing and reverse low-speed stirring, further improving the emulsification effect.

[0019] 3. The multi-directional injection design (dual distribution at the bottom and side walls) of the microbubble generating device, combined with stirring and ultrasonic oscillation, can shorten the raw material mixing time and improve the production efficiency. The pulsed air flow adjustment function optimizes the gas usage amount. Combined with the reasonable selection of ultrasonic power, it takes both high efficiency and energy conservation into account.

[0020] 4. The first microhole and the second microhole adopt a tapered hole design and are coated with a hydrophobic nano-coating or an amphiphilic molecular layer, effectively preventing oil blockage and improving the microbubble generation efficiency and the long-term stability of the device.

[0021] 5. The particles ejected by the atomizing nozzle can impact the rising microbubbles, break the microbubbles, so that they will not rise, and the carried oil layer will fall back into the oil and continue to participate in the mixing. Description of the Drawings

[0022] For ease of explanation, the present invention will be described in detail by the following specific embodiments and the accompanying drawings.

[0023] Figure 1 Structural schematic diagram of the present invention; Figure 2 Cross-sectional view of the mixing tank of the present invention; Figure 3 is Figure 2 Enlarged view at position A in Figure 4 is Figure 2 Enlarged view at position B in Figure 5 Cross-sectional view of the mounting plate of the present invention; Figure 6 Internal structural schematic diagram of the mixing tank of the present invention; Figure 7 is Figure 6 Partial enlarged view in Figure 8 Part drawing of the stirring device of the present invention; Figure 9 Cross-sectional view of the stirring device of the present invention; Figure 10 is Figure 9 Partial enlarged view in Figure 11 Schematic diagram of the gear transmission group when the stirring shaft and the stirring tube of the present invention rotate in the same direction; Figure 12 Schematic diagram of the gear transmission group when the stirring shaft and the stirring tube of the present invention rotate in the opposite direction.

[0024] Explanation of the reference numerals: 1. Mixing tank; 2. Stirring device; 21. High-shear stirring structure; 211. Stirring shaft; 212. Rotor; 22. Auxiliary stirring structure; 221. Stirring pipe; 222. Stator; 223. Through groove; 224. Auxiliary stirring blade; 3. Microbubble generating device; 31. Installation disk; 311. First air passage; 312. First micropores; 313. First air duct; 32. Pulse gas flow device; 321. Gas storage tank; 322. First electromagnetic pulse valve; 323. Air pump; 33. Installation ring; 331. Second air passage; 332. Second micropores; 333. Second air duct; 334. Second electromagnetic pulse valve; 4. Ultrasonic oscillation device; 41. Oscillation disk; 42. Transducer; 43. Flexible ring; 5. Driving structure; 51. Motor; 52. First transmission gear; 53. Second transmission gear; 54. Third transmission gear; 55. Fourth transmission gear; 56. Fifth transmission gear; 6. Liquid spraying structure; 61. Pump body; 62. Liquid suction pipe; 63. Liquid delivery pipe; 64. Nozzle; 65. Ring pipe. Detailed implementation manners

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0026] It should be noted that in the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0027] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0028] Meanwhile, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Refer to Figure 1 For an embodiment of a preparation device and a preparation method of compound peanut oil of the present invention, Its overall structure is as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , including a mixing tank 1, a stirring device 2, a microbubble generating device 3, an ultrasonic oscillation device 4, and a driving structure 5. The structures and functions of each component will be described in detail below.

[0030] The mixing tank 1 is a cylindrical stainless-steel container with a volume of 500 L. The inner wall is smooth to reduce raw material adhesion. The top of the mixing tank 1 is provided with a feed inlet and an exhaust port, and the bottom is provided with a discharge port to facilitate the addition of raw materials and the output of finished products.

[0031] The microbubble generating device 3 is used to inject microbubbles into the mixing tank 1, and includes a mounting plate 31, a pulsed air flow device 32, and a mounting ring 33.

[0032] Mounting plate 31: The mounting plate 31 is a circular stainless-steel plate with a diameter of 80% of the inner diameter of the mixing tank 1 and is fixed to the bottom of the mixing tank 1. An annular first air passage 311 is provided inside the mounting plate 31, and the cross-section of the first air passage 311 is circular. A plurality of first microholes 312 are evenly distributed on the first air passage 311. The first microholes 312 are conical holes with an inlet diameter of 5 mm and an outlet diameter of 2 mm. The hole walls are coated with a hydrophobic nano-coating (such as a silanized silica coating). This tapered design can accelerate the air flow and form a high-pressure jet, effectively reducing the bubble diameter. The first air passage 311 is connected to the pulsed air flow device 32 through a first air duct 313, and the first air duct 313 is a stainless-steel pipe.

[0033] Refer to Figure 6 , Figure 7 ; Pulsed air flow device 32: It includes a gas storage tank 321, an air pump 323, and a first electromagnetic pulse valve 322. An air pressure sensor is installed inside to monitor the air pressure and adjust the operation of the air pump 323 through a control system. The air pump 323 is an oil-free air compressor. The first electromagnetic pulse valve 322 is installed on the first air duct 313, and the pulse frequency is adjustable. Each pulse lasts for 0.05 seconds to control the air flow to form microbubbles.

[0034] Mounting ring 33: The mounting ring 33 is an annular stainless-steel part embedded in the middle of the inner wall of the mixing tank 1 with a height of 50 mm. A second air passage 331 is provided inside the mounting ring 33, which has the same structure as the first air passage 311 and is connected to a second microhole 332 (the parameters can be adjusted according to the mixing materials. Currently, the parameters of the second microhole 332 are the same as those of the first microhole 312). The second air passage 331 is connected to the gas storage tank 321 through a second air duct 333, and a second electromagnetic pulse valve 334 is provided on the second air duct 333, and its operating parameters are the same as those of the first electromagnetic pulse valve 322.

[0035] Refer to Figure 2 , Figure 3 ,Figure 4 ; The microbubble generating device 3 realizes the three-dimensional distribution of microbubbles in the mixing tank 1 through the dual injection design at the bottom and side walls.

[0036] Bottom injection (mounting plate 31): Microbubbles are released upward from the first micropores 312 and rise along the axis of the mixing tank 1, overlapping with the action area of the rotor 212 of the high-shear stirring structure 21. After being sheared and broken, the microbubbles form smaller micro-droplets, enhancing the emulsification effect.

[0037] Side wall injection (mounting ring 33): Microbubbles are ejected horizontally from the second micropores 332 and combine with the eddy current formed by the stator 222 and the auxiliary stirring blades 224 of the auxiliary stirring structure 22, and diffuse radially. This lateral distribution makes up for the problem of insufficient distribution of bottom microbubbles at the edge of the tank body.

[0038] The dual injection enables microbubbles to cover more than 90% of the space in the mixing tank 1, improving the uniformity of microbubble concentration (compared with single bottom injection). When injecting from the bottom and side walls simultaneously, the raw material mixing time can be saved.

[0039] The ultrasonic oscillation device 4 is arranged at the bottom of the mixing tank 1 to enhance microbubble dispersion and raw material molecule mixing; Oscillation plate 41: A stainless steel disc with a polished surface to reduce resistance; Transducer 42: Installed below the oscillation plate 41, using a piezoelectric ceramic transducer; Ultrasonic generator: Connected to the transducer 42 through a shielded cable, with an adjustable output frequency range of 20 - 50 kHz and an adjustable power range of 200 - 800 W.

[0040] There is an installation hole in the center of the mounting plate 31, and the oscillation plate 41 is connected to the hole wall of the installation hole through a flexible ring 43. The flexible ring 43 is made of silicone rubber material and has good elasticity and oil resistance. The flexible ring 43 is bonded to the oscillation plate 41 and the mounting plate 31 through high-temperature silicone glue to ensure sealing performance and vibration transmission efficiency.

[0041] The stirring device 2 includes a high-shear stirring structure 21 and an auxiliary stirring structure 22.

[0042] High-shear stirring structure 21: Includes a stirring shaft 211 and a rotor 212. The stirring shaft 211 is a stainless steel solid shaft with a diameter of 30 mm and a length of 1.5 m, and the top is connected to the driving structure 5. The rotor 212 is fixed at the bottom of the stirring shaft 211. The rotor 212 is a commonly used structure in the field. The rotor 212 used in this device is a disc-shaped structure with 6 shear teeth on the edge, used for high-speed shearing of raw materials and breaking of microbubbles.

[0043] Refer to Figure 8 、 Figure 9 、 Figure 10; Auxiliary stirring structure 22: It includes a stirring tube 221 and a stator 222. The stirring tube 221 is a hollow stainless-steel tube, sleeved outside the stirring shaft 211, and a stator 222 is fixed at the lower end. The stator 222 is of an annular structure, with 12 through grooves 223 evenly distributed on the surface. The through grooves 223 are rectangular, running through the inner and outer sides of the stator 222, and are used to guide microbubbles and liquid flows. There are also 4 auxiliary stirring blades 224 provided on the outer periphery of the stirring tube 221, with an inclination angle of 30 degrees for each blade, enhancing the mixing effect of raw materials.

[0044] Refer to Figure 11 , Figure 12 ; The driving structure 5 is used to drive the stirring shaft 211 and the stirring tube 221. It includes two motors 51, with an adjustable speed range of 0 - 3000 rpm, and the output ends are directly connected to the stirring shaft 211 and the stirring tube 221. However, in order to save power costs, this application document can also be driven by a transmission gear set combined with a single motor; in this way, one motor 51 can be used to drive the stirring shaft 211 and the stirring tube 221 simultaneously.

[0045] Transmission gear set: A first transmission gear 52 is fixed on the stirring shaft 211. The first transmission gear 52 meshes with a second transmission gear 53. The second transmission gear 53 is coaxially fixed with and rotates together with a third transmission gear 54. The third transmission gear 54 meshes with a fourth transmission gear 55. The fourth transmission gear 55 is fixedly connected to the stirring tube 221 through a key connection.

[0046] At the same time, for the transmission gear set in this device, the number of transmission gears can be increased to achieve the same-direction rotation of the stirring shaft 211 and the stirring tube 221; specifically, a fifth transmission gear 56 is added between the third transmission gear 54 and the fourth transmission gear 55. At this time, only the tooth numbers of the third transmission gear 54 and the fourth transmission gear 55 need to be adjusted.

[0047] For the same-direction rotation: The relative speed between the rotor 212 and the stator 222 is relatively low, and the shear force is only determined by the speed difference. For example, if the rotational speed of the stirring shaft 211 is 2500 rpm and the rotational speed of the stirring tube 221 is 500 rpm (a 5-fold relationship), the relative rotational speed is 2000 rpm. The movement trajectories of the liquid flow and microbubbles tend to be consistent, forming a relatively regular unidirectional eddy current. The mixing mainly relies on the high-speed shear of the rotor 212 and the pushing of the auxiliary stirring blades 224.

[0048] Hydrodynamic characteristics: The flow field is relatively smooth, the turbulence intensity is relatively low, the microbubbles rise or spread in a fixed direction, and the distribution uniformity depends on the speed difference. The shear force is concentrated in the gap between the rotor 212 and the stator 222, with relatively strong local turbulence, but the overall flow field has limited effects on the fragmentation of microbubbles and the refinement of liquid droplets.

[0049] During actual application, the mixing process is stable, suitable for low-viscosity raw materials (such as compound oils mixed with peanut oil and other oils), with low energy consumption and less equipment wear. However, for high-viscosity or compound systems containing ingredients (such as compound oils combining peanut oil and additives), the microbubble breaking efficiency is relatively low, the droplet size is relatively large, the emulsification uniformity is insufficient, and the mixing time is relatively long.

[0050] For reverse rotation: The relative speed of the rotor 212 and the stator 222 increases significantly, which is the sum of their rotational speeds. For example, when the rotational speed of the stirring shaft 211 is 2500 rpm and the rotational speed of the stirring tube 221 is 500 rpm, the relative rotational speed is 3000 rpm, which is 50% higher than 2000 rpm in co-rotation. The high-speed shearing of the rotor 212 and the reverse movement of the stator 222 generate a strong counteracting effect, and the microbubbles and liquid flow are repeatedly cut and dispersed in the shearing zone.

[0051] Hydrodynamic characteristics: The flow field presents complex bidirectional turbulence with high eddy current intensity. The microbubbles are quickly broken under the action of reverse force, and the droplet refinement efficiency is improved. The through slots 223 and the auxiliary stirring blades 224 of the stator 222 form reverse guidance, pushing the microbubbles and liquid flow towards the high-shear zone of the rotor 212, enhancing the gas-liquid synergy.

[0052] Compared with co-rotation, the microbubble breaking rate is increased, which is suitable for high-viscosity or complex formulation systems. However, the energy consumption is slightly higher, the gear set and bearings are subject to greater forces, and the equipment maintenance frequency is slightly higher. Which rotation method to use specifically can be determined according to the compound formulation of peanut oil.

[0053] The liquid spraying structure 6. In this embodiment, on the basis of the original compound peanut oil preparation device, a liquid spraying structure 6 is further added at the top inside the mixing tank 1 for uniformly spraying the mixed oil liquid inside the mixing tank 1 again in an atomized manner; meanwhile, it cooperates with the microbubble generating device 3, the stirring device 2, and the ultrasonic oscillation device 4 to enhance the mixing efficiency and emulsification effect of the raw materials. The liquid spraying structure 6 includes a pump body 61, a liquid suction pipe 62, a liquid delivery pipe 63, and an atomizing nozzle 64, and its specific design and implementation method are as follows.

[0054] The pump body 61: It is a peristaltic pump or a diaphragm pump made of corrosion-resistant stainless steel. The pump body 61 is fixed at the top outside the mixing tank 1 and is connected to the mixing tank 1 through a flange to ensure tightness.

[0055] The liquid suction pipe 62: It is an oil-resistant and corrosion-resistant polytetrafluoroethylene (PTFE) hose. One end is connected to the suction port of the pump body 61, and the other end is inserted into the inside of the mixing tank 1. The middle is fixed to the inner wall of the mixing tank 1 through a clamp. At the same time, the liquid suction end of the liquid suction pipe 62 is only inserted into a very shallow position below the upper surface of the mixed oil liquid.

[0056] Infusion tube 63: Also made of PTFE, one end extends to the top inside the mixing tank 1, and the other end is connected to the atomizing nozzle 64 through the annular tube 65.

[0057] Annular tube 65: Fixed to the top inside the mixing tank 1 for installing a plurality of atomizing nozzles 64 arranged in a circumferential array.

[0058] Atomizing nozzle 64: There are multiple in number, installed on the top inside the mixing tank 1, which is a pressure type atomizing nozzle made of stainless steel, and the nozzle diameter is 0.2 - 5 mm (the nozzle can be replaced according to needs).

[0059] The liquid spraying structure 6 of this device has two functions. The first function is that since the uniformly mixed area of the mixing tank 1 is in the area near the rotor 212 and the stator 222, and the oil liquid far from this area is not uniform. At this time, the oil liquid in this part of the area can be pumped out and atomized into tiny particles through the atomizing nozzle 64, which can increase the mixing efficiency.

[0060] At the same time, in this device, due to the setting of the microbubble generating device 3, the microbubbles emitted by the microbubble generating device 3 rise in the oil liquid. A very small part of them will not be attracted by the turbulence and eddy currents. This part of the microbubbles will float out from the surface of the oil liquid, and there will also be a part of the oil liquid layer carried on the membrane of the microbubbles. The particles sprayed through the atomizing nozzle 64 can impact the rising microbubbles and break the microbubbles, so that they will not rise, and the carried oil liquid layer will fall back into the oil liquid to continue participating in the mixing.

[0061] The specific steps of the preparation method of compounding peanut oil by this device are as follows: 1. Feeding: Add refined peanut oil, other oils or protein and fat additives (the ingredient ratio can be adjusted according to requirements) through the top feed port of the mixing tank 1. Close the feed port to ensure the sealing inside the tank.

[0062] 2. Microbubble injection: Set the pulse frequencies of the first electromagnetic pulse valve 322 and the second electromagnetic pulse valve 334 to 1 Hz, and the duration of each pulse is 0.05 seconds. Gas (air or nitrogen) enters the first air passage 311 and the second air passage 331 through the first air duct 313 and the second air duct 333 respectively, and sprays out from the first micropores 312 and the second micropores 332 to form microbubbles with a diameter of about 1 - 5 microns, and inject them into the raw materials inside the mixing tank 1. The microbubble injection time lasts for a period of time.

[0063] 3. Gas - liquid synergistic emulsification: Start the motor 51, adjust the rotation speed of the stirring shaft 211 to 2500 rpm, the rotor 212 performs high - speed shearing on the raw materials, and at the same time breaks the microbubbles. The micro - impact generated by the bursting of the microbubbles further breaks the oil droplets. The shearing process lasts for 10 - 30 minutes, and the temperature inside the tank is controlled between 40 - 50 °C (an electric heating ring can be set outside the tank) to avoid overheating affecting the oil quality.

[0064] 4. Gas-liquid assisted emulsification: The auxiliary stirring structure 22 rotates at a fixed speed through the driving structure 5. The through slots 223 and the auxiliary stirring blades 224 of the stator 222 guide the microbubbles and the liquid flow to form a unidirectional eddy or a bidirectional turbulent flow in the tank, enhancing the mixing efficiency. This process is carried out synchronously with step 3 for 15 minutes to ensure the uniform distribution of microbubbles and improve the emulsification effect.

[0065] 5. Ultrasonic oscillation: Turn on the ultrasonic generator. The transducer 42 drives the oscillation disk 41 to generate ultrasonic vibrations, further dispersing the microbubbles through the cavitation effect and promoting the mixing between peanut oil and ingredient molecules. The ultrasonic oscillation lasts for 10 - 50 minutes, and then all equipment is turned off after completion.

[0066] 6. Discharging and detection: Collect the finished compound peanut oil through the bottom discharge port of the mixing tank 1. Detect the droplet size of the obtained product.

[0067] Through the synergistic effect of microbubble injection, high-shear stirring, and ultrasonic oscillation, the present invention realizes the efficient preparation of compound peanut oil. The device has a reasonable structure and is easy to operate, suitable for industrial production. The obtained product has uniform emulsification and high stability, with significant technical advantages.

[0068] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A preparation device for compound peanut oil, characterized in that: The invention comprises a mixing tank (1), wherein a stirring device (2) is arranged in the mixing tank (1), wherein a microbubble generating device (3) is arranged in the mixing tank (1), wherein the microbubble generating device (3) comprises a mounting plate (31) arranged at the bottom of the mixing tank (1), wherein a first air passage (311) is arranged in the mounting plate (31), wherein the first air passage (311) is connected to a first micropore (312), and wherein the first micropore (312) is communicated with the interior of the mixing tank (1).

2. The preparation device of compound peanut oil according to claim 1, characterized in that: The first air passage (311) is an annular passage; a first air guide pipe (313) is provided on one side of the first air passage (311); one end of the first air guide pipe (313) is connected to a pulse airflow device (32); the pulse airflow device (32) comprises an air storage tank (321); the first air guide pipe (313) is in communication with the air storage tank (321); a first electromagnetic pulse valve (322) is provided on the first air guide pipe (313); an air pressure sensor is provided in the air storage tank (321); and an air pump (323) is connected to the air storage tank (321).

3. The preparation device of compound peanut oil according to claim 2, characterized in that: The microbubble generating device (3) further comprises a mounting ring (33) arranged on the side wall of the mixing tank (1); a second air passage (331) is arranged inside the mounting ring (33); the second air passage (331) is connected to a second microhole (332); the second air passage (331) is also an annular passage; a second air guide pipe (333) is arranged on one side of the second air passage (331); one end of the second air guide pipe (333) is connected to the gas storage tank (321); and a second electromagnetic pulse valve (334) is arranged on the second air guide pipe (333).

4. The method for preparing composite peanut oil according to claim 3, characterized in that: The first micropore (312) and the second micropore (332) are both conical pores, and the pore walls of the first micropore (312) and the second micropore (332) are coated with a hydrophobic nano coating or an amphiphilic molecule layer.

5. The preparation device of compound peanut oil according to claim 4, characterized in that: An ultrasonic oscillation device (4) is also provided at the bottom of the mixing tank (1), the ultrasonic oscillation device (4) comprising an oscillation plate (41) provided at the bottom of the mixing tank (1), a transducer (42) provided at the lower end of the oscillation plate (41), and an ultrasonic generator connected to the transducer (42); a mounting hole is provided in the middle of the mounting plate (31), and a side surface of the oscillation plate (41) is connected to a hole wall of the mounting hole via a flexible ring (43).

6. The preparation device of compound peanut oil according to claim 5, characterized in that: The flexible ring (43) is bonded to the oscillating plate (41) and the mounting plate (31) by means of silicone adhesive, and the flexible ring (43) is made of one of silicone rubber, polyurethane elastomer, thermoplastic elastomer and rubber film.

7. The preparation device of compound peanut oil according to claim 6, characterized in that: The stirring device (2) comprises a high-shear stirring structure (21) and an auxiliary stirring structure (22); the high-shear stirring structure (21) comprises a stirring shaft (211), and a rotor (212) is arranged at the end of the stirring shaft (211); the auxiliary stirring structure (22) comprises a stirring tube (221) sleeved outside the stirring shaft (211), and a stator (222) is arranged at the end of the stirring tube (221); the stator (222) is an annular structure, covering the outside of the rotor (212), and the stator (222) array has a through groove (223) that runs through the inside and outside of the stator (222).

8. The preparation device of compound peanut oil according to claim 7, characterized in that: An auxiliary stirring blade (224) is also provided on the outer periphery of the stirring tube (221); the stirring tube (221) rotates in the opposite direction to the stirring shaft (211); and the rotation speed of the stirring tube (221) is lower than the rotation speed of the stirring shaft (211).

9. The preparation device of compound peanut oil according to claim 8, characterized in that: A liquid spray structure (6) is arranged at the top of the mixing tube (1), the liquid spray structure (6) comprising a pump body (61), a liquid extraction tube (62) connected to the pump body (61), and a liquid infusion tube (63), the liquid infusion tube (63) being connected to an atomizing nozzle (64), and the atomizing nozzle (64) being arranged at the top of the mixing tank (1).

10. A method for preparing a composite peanut oil, characterized in that: The method comprises the following steps:

1. Adding materials: adding peanut oil raw materials and ingredients into a mixing tank (1) in a predetermined proportion; 2. Microbubble injection: the first electromagnetic pulse valve (322) and the second electromagnetic pulse valve (334) control the pulse airflow, and the airflow is output from the first micropore (312) and the second micropore (332) to generate microbubbles, which are injected into the raw materials in the mixing tank (1); 3. Gas-liquid synergistic emulsification: the high shear stirring structure (21) shears the raw materials in the mixing tank (1) at a high speed and breaks the microbubbles, and the microbubble explosion generates micro-impact to break the droplets; 4. Gas-liquid assisted emulsification: the auxiliary stirring structure (22) cooperates with the high shear stirring structure (21) to enhance the mixing efficiency and guide the flow direction of the microbubbles; 5. Ultrasonic oscillation: the ultrasonic generator drives the transducer (42) to make the oscillation disk (41) generate ultrasonic vibration, further disperse the microbubbles and enhance the mixing effect between the raw material molecules.

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