Continuous extraction apparatus based on ultrasonic and microfluidic technology

Abstract

This invention discloses a continuous extraction device based on ultrasonic and microfluidic technology, applied in the field of extraction equipment technology. It includes a housing, with an inclined plate fixedly connected inside the housing. One side of the inclined plate has a beveled surface. A central cylinder is located at the center of the housing. The upper and lower ends of the central cylinder are fixedly connected to the inclined plate and the housing, respectively. A partition is fixedly installed inside the central cylinder. A scraper is located above the partition, and several component dispensing assemblies are located below the partition. Each dispensing assembly includes a dispensing shell, with a support fixedly installed inside the dispensing shell. A driving component is fixedly installed at the upper end of the support, and a baffle is fixedly installed at the upper end of the output end of the driving component. The baffle has a conical shape. A pressure sensing module is located on the connection side between the driving component and the baffle. This invention features raw material processing and waste recycling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of extraction equipment, in particular to a continuous extraction equipment based on ultrasonic and microfluidic technology. BACKGROUND

[0002] Extraction is a separation technology based on the difference in solubility of solutes in different solvents, the core of which is to transfer target components in the mixture, such as plant active ingredients, industrial pollutants and drug intermediates, to a solvent in which it is more soluble, so as to realize the separation of target components and impurities.

[0003] The traditional extraction process is limited by the problem of low mass transfer efficiency, and the use of ultrasonic and microfluidic technology improves the mass transfer efficiency, ultrasonic technology is to use the energy of ultrasonic waves to strengthen the extraction process, and break the mass transfer limit of traditional extraction, microfluidic technology is a new technology for strengthening extraction by using microfluidic equipment, the core of which is to improve the mass transfer efficiency through the small channel size, in the extraction process, the raw materials often need to be pretreated, such as grinding of coffee bean raw materials and making of raw material powder cake, etc., after the extraction is completed, the residual waste of coffee beans needs to be recycled, under the existing technology, whether it is to extract caffeine from coffee beans in life, or to extract plant oil in industry, the extraction equipment usually cannot realize the processing of coffee bean raw materials and the treatment of waste materials independently, which affects the continuity of the extraction process and reduces the production efficiency.

[0004] Therefore, how to realize efficient continuous extraction has become a problem to be solved by those skilled in the art. SUMMARY

[0005] The present application relates to the technical field of extraction equipment, in particular to a continuous extraction equipment based on ultrasonic and microfluidic technology.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a continuous extraction device based on ultrasonic and microfluidic technology, comprising a shell and a data processing module. A feed inlet and a liquid inlet are fixedly installed at the upper end of the shell. A motor is fixedly installed at the upper end of the shell, and the output end of the motor penetrates the shell. An inclined plate is provided inside the shell and is fixedly connected to the inner wall of the shell. The feed inlet and the liquid inlet are located above the inclined plate. An inclined surface is machined on the side of the inclined plate near the feed inlet and the liquid inlet. A central cylinder is located at the center of the shell. The upper end of the central cylinder is fixedly connected to the lower end of the inclined plate, and the lower end of the central cylinder is fixedly connected to the inner wall of the shell. The interior of the central cylinder is machined into a hollow cavity. A partition is fixedly installed inside the central cylinder. A vision sensor is fixedly installed on the inner wall of the central cylinder above the partition. A scraper is provided above the partition and is fixedly connected to the output end of the motor. Several component feeding assemblies are provided below the partition.

[0007] The material distribution assembly includes a material distribution shell, the interior of which is machined into a hollow structure. A support is fixedly installed inside the material distribution shell. A drive component is fixedly installed at the upper end of the support. A baffle is fixedly installed at the upper end of the output end of the drive component. The baffle has a conical shape. A pressure sensing module is provided on the connection side between the drive component and the baffle.

[0008] According to the above technical solution, a partition plate two is provided at the lower end of the material distribution component. The upper and lower ends of the material distribution shell pass through the partition plate one and the partition plate two, respectively. A driving component two is installed at the lower end of the partition plate two. A motor two is fixedly installed at the output end of the driving component two. A grinding head is fixedly installed on the output shaft of the motor two. A base is provided below the grinding head. The base is fixedly connected to the interior of the central cylinder. An inclined surface two is provided on the side of the base near the grinding head. The inclination angle of the inclined surface two is the same as the inclination angle of the grinding head.

[0009] According to the above technical solution, the base has several sets of discharge ports, the discharge ports pass through the base, the discharge ports are evenly distributed around the central axis of the base, and a guide box is fixedly installed at the lower end of the base.

[0010] According to the above technical solution, a guide tube is connected to the center of the lower end of the guide box, a microfluidic box is connected to the lower end of the guide box, an extraction box is arranged below the microfluidic box, both the upper and lower ends of the extraction box are open structures, a filter screen is fixedly installed at the lower opening of the extraction box, a driving component three is arranged on the right side of the guide box, the driving component three is fixedly installed at the lower end of the base, a motor three is fixedly connected to the output end of the driving component three, and a pressure plate is fixedly installed on the output shaft of the motor three.

[0011] According to the above technical solution, the extraction box and the microfluidic box have the same diameter. A boss is machined on one side of the microfluidic box, and an ultrasonic generator is installed on the outside of the boss.

[0012] According to the above technical solution, a discharge pipe is provided directly below the microfluidic box. The horizontal height of the discharge pipe is lower than that of the extraction box. The lower end of the discharge pipe is fixedly connected to the inner wall of the outer shell. An ultrasonic generator and an ultrasonic receiver are symmetrically installed on the outer periphery of the discharge pipe.

[0013] According to the above technical solution, a waste box is fixedly installed on the outer periphery of the outer shell, and a motor four, which is a servo motor, is fixedly installed on the outer side of the waste box. A track is provided on the lower rear side of the microfluidic box, and the extraction box is at the same horizontal height as the track. A solvent tube is provided in the gap between the central cylinder and the outer shell. The upper end of the solvent tube passes through the inclined plate and communicates with the liquid inlet, and the lower end of the solvent tube passes through the central cylinder and communicates with the microfluidic box.

[0014] According to the above technical solution, a slide is provided on the side of the track near the extraction box, and a lead screw is provided inside the slide, which is connected to the nut of the extraction box.

[0015] According to the above technical solution, one end of the track passes through the central cylinder, the outer shell and the waste box, and the other end of the track is fixedly connected to the inner wall of the central cylinder. One end of the lead screw is connected to the output end of the motor four through a coupling, and the other end of the lead screw is connected to a support lug by a bearing. The support lug is set inside the slide at the connection end of the track and the central cylinder.

[0016] According to the above technical solution, a water inlet pipe is fixedly installed at the upper end of the waste box, and the water inlet pipe is connected to an external water source. A water tank is fixedly connected to one end of the water inlet pipe inside the waste box. The diameter of the water tank is the same as the diameter of the extraction box. A second protrusion is provided on the lower end face inside the waste box. The second protrusion is located directly below the water tank. Several through holes are evenly provided around the second protrusion on the lower end face of the inner wall of the waste box.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting a material distribution component, divides the raw material into several equal portions, effectively improving the extraction efficiency; by setting a grinding head, the raw material is ground into granules that are easy to extract; by setting a pressure plate, the raw material granules are made into powder cakes with uniform structure; and by setting a water tank, the waste material is recycled and processed. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 This is the present invention. Figure 2 Schematic diagram of area A;

[0022] Figure 4 This is a schematic diagram of the scraper installation of the present invention;

[0023] Figure 5 This is a schematic diagram of the inclined plate structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the material distribution shell structure of the present invention;

[0025] Figure 7 This is a cross-sectional schematic diagram of the material distribution component of the present invention;

[0026] Figure 8 This is a half-sectional schematic diagram of the waste box of the present invention;

[0027] Figure 9 This is a schematic diagram of the extraction box structure of the present invention;

[0028] Figure 10 This is a schematic diagram showing the position of the present invention;

[0029] Figure 11 This is the present invention. Figure 10 A schematic diagram is provided for area B;

[0030] Figure 12 This is the present invention. Figure 10 Schematic diagram of region C;

[0031] Figure 13 This is a schematic diagram of position two of the present invention;

[0032] Figure 14 This is the present invention. Figure 13 Schematic diagram of region D;

[0033] Figure 15 This is a schematic diagram of position three of the present invention;

[0034] In the diagram: 1. Outer shell; 2. Feed inlet; 3. Liquid inlet; 4. Motor 1; 5. Inclined plate; 6. Scraper; 7. Central cylinder; 8. Partition 1; 9. Material distribution assembly; 10. Material distribution shell; 11. Support; 12. Drive component 1; 13. Baffle; 14. Partition 2; 15. Drive component 2; 16. Motor 2; 17. Grinding head; 18. Base; 19. Discharge port; 20. Guide box; 21. Guide tube; 22. 23. Microfluidic box; 24. Drive component three; 25. Motor three; 26. Pressure plate; 27. Track; 28. Lead screw; 29. ​​Extraction box; 30. Filter screen; 31. Waste box; 32. Water tank; 33. Water inlet pipe; 34. Boss one; 35. Boss two; 36. Ultrasonic generator one; 37. Discharge pipe; 38. Ultrasonic generator two; 39. Ultrasonic receiver; 40. Motor four; 41. Solvent pipe. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 This invention provides a technical solution: a continuous extraction device based on ultrasonic and microfluidic technology, comprising a housing 1 and a data processing module. The data processing module is used to receive and analyze signals and issue command signals to corresponding structures. A feed inlet 2 and a liquid inlet 3 are fixedly installed at the upper end of the housing 1, penetrating the housing 1 and communicating with its interior. A motor 4 is fixedly installed at the upper end of the housing 1, with its output end penetrating the housing 1. An inclined plate 5 is provided inside the housing 1, the inclined plate 5 having a circular shape. The inclined plate 5 is located below the feed inlet 2 and the liquid inlet 3. An inclined surface is machined on the side of the inclined plate 5 closest to the feed inlet 2 and the liquid inlet 3. The inclined plate 5 connects with the outer... The inner wall of the shell 1 is fixedly connected. A central cylinder 7 is set at the center of the interior of the shell 1. The upper end of the central cylinder 7 is fixedly connected to the lower end of the inclined plate 5. The lower end of the central cylinder 7 is fixedly connected to the inner wall of the shell 1. The interior of the central cylinder 7 is machined into a hollow cavity. A partition plate 8 is fixedly installed inside the central cylinder 7. A vision sensor is fixedly installed on the inner wall of the central cylinder 7 above the partition plate 8 to detect whether the raw material has been completely pushed into the material distribution assembly 9. A scraper 6 is set above the partition plate 8. The scraper 6 is fixedly connected to the output end of the motor 4. One side of the scraper 6 is arc-shaped. Several material distribution assemblies 9 are set below the partition plate 8. A partition plate 14 is set at the lower end of the material distribution assembly 9.

[0037] Please see Figures 6-7 The material distribution assembly 9 includes a material distribution shell 10. The upper and lower ends of the material distribution shell 10 are respectively penetrated by a first partition 8 and a second partition 14, connecting the upper space of the first partition 8 and the lower space of the second partition 14. The interior of the material distribution shell 10 is processed into a hollow structure. A bracket 11 is fixedly installed inside the material distribution shell 10. A first drive component 12 is fixedly installed at the upper end of the bracket 11. A baffle 13 is fixedly installed at the upper end of the output end of the first drive component 12. The baffle 13 has a conical shape. A pressure sensing module is provided on the connection side between the first drive component 12 and the baffle 13. The pressure sensing module is electrically connected to the first drive component 12 and the data processing module respectively, and is used to detect the pressure on the baffle 13. The first drive component 12 can be an electric telescopic rod.

[0038] The following is a supplementary explanation based on the above structure: The raw material to be extracted is fed into the interior of the outer shell 1 through the feed port 2. The raw material slides down along the inclined plate 5 to the top of the partition 8. The motor 4 is started. The output end of the motor 4 drives the scraper 6 to rotate. The scraper 6 pushes the raw material above the partition 8 evenly into the distribution shell 10 of each component 9. The raw material applies downward pressure to the baffle 13 inside the distribution shell 10. The pressure sensing module detects the pressure change. When the pressure sensing module detects that the pressure reaches the preset value, the pressure sensing module transmits a signal to the data processing module. The data processing module sends a control signal to the drive component 12. The output end of the drive component 12 moves downward. The drive component 12 drives the baffle 13 to move downward, so that the internal space of the distribution shell 10 is connected. The raw material slides down through the conical surface of the baffle 13. The raw material finally slides down along the inner wall of the distribution shell 10 into the bottom of the partition 14.

[0039] It should be noted that each component of the material preparation unit 9 performs the above operations in sequence, dividing the raw material into several portions to ensure that the amount of raw material is constant during each extraction operation, thereby effectively improving product concentration and extraction efficiency.

[0040] Please see Figure 2 , Figures 10-12A drive component 15 is installed at the lower end of partition 2 14. A motor 2 16 is fixedly installed at the output end of drive component 2 15. A grinding head 17 is fixedly installed on the output shaft of motor 2 16. The grinding head 17 has a conical shape. A base 18 is provided below the grinding head 17. The base 18 is fixedly connected to the interior of the central cylinder 7. An inclined surface 2 is provided on the side of the base 18 near the grinding head 17. The inclination angle of the inclined surface 2 is the same as that of the grinding head 17. Several sets of discharge ports 19 are provided on the base 18. The discharge ports 19 pass through the base 18 and are evenly distributed around the central axis of the base 18. A guide box 20 is fixedly installed at the lower end of the base 18. The discharge ports 19 connect the internal space of the guide box 20 with the upper space of the base 18. Drive component 2 15 can be an electric telescopic rod. Drive component 2 15 is electrically connected to the data processing module.

[0041] The following is a supplementary explanation based on the above structure: Taking coffee beans as an example of plant-based raw materials, coffee beans are relatively large in size. If coffee beans are extracted directly, it is difficult to extract the caffeine from them. Therefore, in daily life, coffee beans need to be ground in advance. In the existing technology, the pretreatment and extraction of coffee beans usually use different equipment, which seriously affects the extraction efficiency. The raw material falls into the space below the partition 14 through the feed hopper 10. The drive component 15 is started, and the output end of the drive component 15 drives the motor 16 to move. The motor 16 drives the grinding head 17 to move. By controlling the stroke of the output end of the drive component 15, the distance between the grinding head 17 and the base 18 is controlled, thereby realizing the dynamic control of the grinding size of the raw material. The falling raw material falls into the gap between the grinding head 17 and the base 18. The motor 16 is started, and the motor 16 drives the grinding head 17 to rotate, realizing the grinding of the raw material. The ground raw material particles fall into the guide box 20 through the discharge port 19.

[0042] Please see Figures 10-12 and Figure 14A feed tube 21 is connected to the center of the lower end of the feed box 20. A microfluidic box 22 is connected to the lower end of the feed box 20. A track 26 is located on the rear side below the microfluidic box 22. An extraction box 28 is located on the lower right side of the microfluidic box 22. Both the upper and lower ends of the extraction box 28 are open structures. A filter screen 29 is fixedly installed at the lower opening of the extraction box 28. The filter screen 29 has a small pore size, which can effectively prevent the ground raw material particles from passing through the filter screen 29. The extraction box 28 and the track 26 are at the same horizontal height. The extraction box 28 and the microfluidic box 22 have the same diameter. A boss 33 is machined on one side of the microfluidic box 22. An ultrasonic generator 35 is installed on the outside of the boss 33. A drive component 23 is fixedly installed at the lower end of the base 18. The drive component 23 is located on the right side of the guide box 20. A motor 24 is fixedly connected to the output end of the drive component 23. A pressure plate 25 is fixedly installed on the output shaft of the motor 24. The drive component 23 can be an electric telescopic rod. The drive component 23 is electrically connected to the data processing module.

[0043] Please see Figure 1 , Figure 2 , Figure 3 and Figure 8 A waste box 30 is fixedly installed on the outer periphery of the outer wall of the outer shell 1. A motor 39 is fixedly installed on the outer side of the waste box 30. The motor 39 is a servo motor. An encoder is installed inside the servo motor to detect the number of rotations of the output shaft of the motor 39. A slide is opened on the side of the track 26 near the extraction box 28. A lead screw 27 is set inside the slide. The lead screw 27 is connected to the nut of the extraction box 28. One end of the track 26 passes through the central cylinder 7, the outer shell 1 and the waste box 30. The other end of the track 26 is fixedly connected to the inner wall of the central cylinder 7. One end of the lead screw 27 is connected to the output end of the motor 39 through a coupling. The other end of the lead screw 27 is connected to a support ear with a bearing. The support ear is set inside the slide at the connection end of the track 26 and the central cylinder 7. The boss 33 of the microfluidic box 22 forms a limiting structure to limit the stroke of the extraction box 28 under the drive of the motor 39, so that the extraction box 28 moves and is accurately positioned directly below the microfluidic box 22.

[0044] A solvent tube 40 is provided in the gap between the central cylinder 7 and the outer shell 1. The upper end of the solvent tube 40 passes through the inclined plate 5 and is connected to the liquid inlet 3. The lower end of the solvent tube 40 passes through the central cylinder 7 and is connected to the microfluidic box 22.

[0045] The following is a supplementary explanation based on the above structure: When the motor 39 is started, it drives the lead screw 27 to rotate. The lead screw 27 drives the extraction box 28 connected to the nut to move. Since the boss 33 of the microfluidic box 22 acts as a limit, the stroke of the extraction box 28 along the lead screw 27 is determined. By controlling the number of rotations of the output shaft of the motor 39, the movement distance of the extraction box 28 can be regulated. After the motor 39 rotates a certain number of times, the encoder inside the motor 39 transmits a signal to the data processing module. The data processing module transmits a signal to the motor 39, causing the motor 39 to stop working, thereby moving the extraction box 28 to the required position.

[0046] Before adding the extraction raw material, control motor 39 moves the extraction box 28 below motor 24, and the raw material is conveyed into the outer shell 1 through the feed port 2. After the material is divided and ground, the raw material particles in the guide box 20 fall into the extraction box 28 along the guide tube 21. Start drive component 23. The output end of drive component 23 pushes motor 24 to move closer to the extraction box 28. Motor 24 drives the pressure plate 25 to move in the same direction. Start motor 24. Motor 24 drives the pressure plate 25 to rotate. In order to ensure the uniformity of raw material extraction, the rotating pressure plate 25 pushes the raw material particles in the extraction box 28 to be evenly distributed above the filter screen 29. At the same time, control drive component 23 to extend outward appropriately, so that the pressure applied by the pressure plate 25 to the raw material particles increases, thereby pressing the raw material particles into a powder cake shape.

[0047] After the powder compact is manufactured, motor 24 is turned off, and drive component 23 moves pressure plate 25 away from extraction box 28. Motor 39 drives extraction box 28 to move, causing extraction box 28 to move the raw material below microfluidic box 22. At this time, the outer wall of extraction box 28 is tightly fitted with protrusion 33 of microfluidic box 22. Extraction solvent is delivered into solvent tube 40 through inlet 3. The solution enters microfluidic box 22 along solvent tube 40. Microfluidic box 22 generates droplets from extraction solvent and delivers the droplets into extraction box 28. The amount of droplets is controlled by microfluidic box 22 to avoid waste of extraction solvent. At the same time, microfluidic box 22 makes droplets evenly penetrate the raw material. The amount of droplets used for each extraction is determined by the target extraction rate. The higher the target extraction rate, the more extraction solvent is required. At this time, ultrasonic generator 35 is activated. Ultrasonic waves emitted by ultrasonic generator 35 are transmitted to the inside of extraction box 28. Ultrasonic waves cause the generation, vibration and rupture of micro bubbles in the mixture of raw material and solution, accelerating the dissolution of effective components in raw material.

[0048] It should be noted that the microfluidic box 22 generates extremely small droplets from the extraction solvent through internal microchannels. The principle of using microchannels to generate droplets in the microfluidic box 22 is existing technology and will not be described in detail here. This increases the contact area between the solution and the raw material, thereby increasing the dissolution rate of the effective components in the raw material and effectively improving the extraction efficiency.

[0049] Ultrasonic waves generate bubbles in the solution that surround the surface of the raw material particles and the gaps between the particles. When the bubbles burst, the high-pressure impact force generated by the bubbles destroys the cell walls or cell membranes of the raw materials, allowing the effective components inside the cells to be released directly and quickly into the extraction solvent, effectively improving the extraction efficiency.

[0050] Please see Figure 2 and Figure 8 A discharge pipe 36 is located directly below the microfluidic box 22. The horizontal height of the discharge pipe 36 is lower than that of the extraction box 28. The lower end of the discharge pipe 36 is fixedly connected to the inner wall of the outer shell 1. An ultrasonic generator 37 and an ultrasonic receiver 38 are symmetrically installed on the outer periphery of the discharge pipe 36. The ultrasonic receiver 38 is electrically connected to the data processing module and detects whether there is an extracted solution flowing through the discharge pipe 36 by the intensity of ultrasonic reflection.

[0051] A water inlet pipe 32 is fixedly installed at the upper end of the waste box 30. The water inlet pipe 32 passes through the waste box 30 and is connected to an external water source. A water tank 31 is fixedly connected to one end of the water inlet pipe 32 inside the waste box 30. The diameter of the water tank 31 is the same as the diameter of the extraction box 28. A second boss 34 is provided on the lower end face inside the waste box 30. The second boss 34 is located directly below the water tank 31. Several through holes are evenly provided around the second boss 34 on the lower end face of the inner wall of the waste box 30.

[0052] The following is a supplementary explanation based on the above structure: The extracted solution flows out through the filter screen 29 and falls into the discharge pipe 36. The ultrasonic generator 37 emits ultrasonic waves, which penetrate the discharge pipe 36 and the flowing solution and are received by the ultrasonic receiver 38. During this process, the ultrasonic waves promote the homogenization of the extracted solution and prevent the solution from stratifying due to gravity during the downward flow.

[0053] Because ultrasound waves attenuate rapidly in air, when the signal received by the ultrasonic receiver 38 is very weak or even completely lost, it indicates that no solution is flowing through the discharge pipe 36. Ultrasonic waves have good propagation performance in liquids. Therefore, when the signal received by the ultrasonic receiver 38 is clear, stable, and of high intensity, it indicates that the extracted solution is flowing through the discharge pipe 36. The extraction is completed by judging whether the signal received by the ultrasonic receiver 38 is complete. When the ultrasonic receiver 38 receives no signal or receives a weak signal, the ultrasonic receiver 38 transmits the signal to the data processing module, and the data processing module transmits the signal to the motor 4 39.

[0054] Motor 4 39 drives extraction box 28 to move directly below water tank 31. At this time, boss 2 34 is located below extraction box 28 to reduce the water flow through filter screen 29. External water source delivers clean water into water tank 31 through water inlet pipe 32. Water tank 31 delivers clean water to extraction box 28. Due to the reduced water flow through filter screen 29, clean water overflows from extraction box 28. The overflowing clean water carries raw material particles that did not participate in extraction and flows out through the through hole of waste box 30, realizing the recycling of waste and cleaning of extraction box 28, and avoiding residual waste and solution from affecting subsequent extraction.

[0055] With other conditions remaining unchanged, the extraction steps for different raw materials are as follows, based on actual production conditions:

[0056] Step 1: The raw material is fed into the outer shell 1 through the feed inlet 2, and the raw material is evenly distributed by the scraper 6 and the material distribution component 9;

[0057] Step 2: Using the drive component 15, adjust the positional relationship between the grinding head 17 and the base 18 to ensure that the raw material is ground to the target size;

[0058] Step 3: Using motor 439, drive extraction box 28 to move to different positions to complete the preparation of raw material powder cake, powder cake extraction and cleaning in sequence.

[0059] Specifically, in step one, the raw material is fed into the outer shell 1 through the feed inlet 2. Under the action of the scraper 6, the raw material is evenly distributed into each group of material distribution components 9. Due to the influence of the weight of the baffle 13 itself, the initial value of the pressure sensing module is the weight of the baffle 13. When the pressure sensing module detects that the pressure on the baffle 13 reaches the preset value, the drive component 12 drives the baffle 13 to move downward, opening the channel inside the material distribution shell 10, so that the raw material falls below the partition 2 14. When the raw material completely leaves the material distribution component 9, the pressure detected by the pressure sensing module returns to the weight of the baffle 13. At this time, the pressure sensing module transmits a signal to the data processing module, and the data processing module transmits a signal to the drive component 12. The drive component 12 drives the baffle 13 to move upward, and the baffle 13 separates the internal space of the material distribution shell 10, waiting for the scraper 6 to push the raw material into the material distribution shell 10.

[0060] It should be noted that, since the scraper 6 pushes the raw material into each component 9 during the rotation process, the pressure sensing module in each component 9 detects that the pressure of the raw material reaches the preset value at different times. In order to avoid the other component 9 releasing the material before the raw material is completely extracted, which would affect the extraction efficiency, the raw material in each component 9 is released sequentially through the data processing module after the amount of raw material in each component 9 reaches the preset value, so as to ensure that the quality of the raw material extracted each time is the same.

[0061] Furthermore, the scraper 6 rotates continuously, pushing the raw material into the feeding component 9. When there is too much raw material, after multiple rounds of feeding, some residual raw material in each feeding component 9 cannot meet the preset pressure value. At this time, the data processing module controls each group of drive components 12 to connect the internal spaces of each feeding component 9, so that all the residual raw material is transported to the subsequent stage. The data processing module transmits a signal to the microfluidic box 22 to control the output of the extraction solvent, ensuring full extraction under conditions of less raw material and avoiding waste of solution.

[0062] When the raw material is insufficient, each component of the feeding assembly 9 cannot complete one round of feeding. For example, four components of the feeding assembly 9 are set. After the scraper 6 rotates once, the raw material is completely pushed into each component of the feeding assembly 9. The amount of raw material can meet the preset pressure of three of the components of the feeding assembly 9, but the amount of raw material in the last component of the feeding assembly 9 cannot meet the preset pressure. The data processing module calculates the weight of the raw material in the last component of the feeding assembly 9 after it is evenly distributed to the other three components of the feeding assembly 9, and dynamically adjusts each group of drive components 12 to control the cooperation of each component of the feeding assembly 9 to release the raw material in the last component of the feeding assembly 9 in three stages. Each time the raw material is released, the other three components of the feeding assembly 9 are controlled to release the raw material in sequence, thereby achieving uniform feeding each time.

[0063] Specifically, in step three, based on step one, if too much raw material is conveyed, when the scraper 6 pushes the raw material into each component 9, due to the influence of inertia, the excess raw material falls into the distribution shell 10, resulting in the amount of raw material discharged at one time exceeding the preset value. This leads to more raw material particles entering the extraction box 28 after grinding. When making the powder cake, the thickness of the raw material accumulation in the extraction box 28 is too large, and the pressure of the pressure plate 25 is difficult to be evenly transmitted to the deep area of ​​the powder cake. The surface raw material is compacted due to direct pressure, while the deep raw material becomes loose due to pressure decay, forming an uneven structure with a dense outer layer and a loose inner layer. The uneven powder cake structure causes inconsistent flow efficiency of the extraction solution in different areas of the powder cake. In the loose area, the solution quickly passes through the powder cake, resulting in a decrease in the effective extraction rate of the loose area. In the compacted area, over-extraction occurs, ultimately causing large fluctuations in the concentration of the extracted product, affecting the effective extraction rate. When there is too much raw material, the drive component 23 is used to make the pressure plate 25 press the powder cake in layers, making the internal structure of the powder cake uniform.

[0064] Specifically, when the pressure sensing module detects that the pressure exceeds the preset error range, the pressure sensing module transmits a signal to the data processing module, and the data processing module transmits a signal to the drive component 23, causing the drive component 23 to move the pressure plate 25 in advance. As the ground raw material particles fall into the extraction box 28 one after another, the pressure plate 25 promptly forms the raw material particles falling into the extraction box 28 into a powder cake. As the number of raw material particles increases, the drive component 23 is controlled to move the pressure plate 25 upward. During this process, the pressure plate 25 compacts the raw material particles piled up at different heights into a powder cake, ensuring the uniformity of the final powder cake structure.

[0065] Furthermore, if the amount of raw material conveyed is small, the amount of raw material released by the dispensing component 9 each time will be small. If the pressure plate 25 still uses the preset pressure, the excessive pressure will make the powder cake structure too dense, making it difficult for the extraction solution to flow and reducing the effective extraction rate. At this time, the driving component 23 should be controlled to reduce the pressure of the pressure plate 25 and ensure the uniformity of the powder cake structure.

[0066] Furthermore, in extreme cases, if too little raw material is supplied, the number of raw material particles falling into the extraction box 28 each time is far less than the minimum amount required to make a powder cake. In this case, no matter what pressure is applied by the pressure plate 25, it is impossible to make a qualified powder cake. The amount of raw material supplied should be increased to ensure that the pressure plate 25 can make a powder cake.

[0067] Furthermore, since the lead of the lead screw 27 is a fixed value, the moving distance of the nut on the shaft of the lead screw 27 is the product of the lead and the number of rotations. Therefore, by controlling the number of rotations of the output end of motor 4 39, the moving distance of the extraction box 28 can be controlled. Under the limiting action of the boss 1 33 of the microfluidic box 22, the moving range of the extraction box 28 is fixed. Therefore, by controlling the number of rotations of motor 4 39, the extraction box 28 can be moved to different positions. Before extraction begins, motor 4 39 drives the extraction box 28 to move to such a position. Figure 9 As shown in position one, at this time, extraction box 28 is directly below motor three 24. Extraction box 28 completes the collection of raw material particles and the making of powder cake at position one. Motor four 39 drives extraction box 28 to move to position one. Figure 12 Position two, as shown, is precisely positioned between the extraction box 28 and the microfluidic box 22 by the action of the protrusion 33 of the microfluidic box 22. Extraction of the raw material is achieved using the microfluidic box 22 and the ultrasonic generator 35. The ultrasonic generator 37 and the ultrasonic receiver 38 determine whether extraction is complete. Once extraction is complete, the motor 39 drives the extraction box 28 to move as shown. Figure 14 As shown in position three, the extraction box 28 is located directly below the water tank 31 and directly above the second boss 34. Clean water is introduced through the water inlet pipe 32 to discharge the residual waste after extraction and to clean the residual extraction solvent, so as to avoid the waste and residual solvent affecting the subsequent extraction operation.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0069] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous extraction device based on ultrasonic and microfluidic technology, comprising a shell (1) and a data processing module, characterized in that: The upper end of the outer shell (1) is fixedly equipped with a feed inlet (2) and a liquid inlet (3). The upper end of the outer shell (1) is fixedly equipped with a motor (4). The output end of the motor (4) passes through the outer shell (1). An inclined plate (5) is provided inside the outer shell (1). The inclined plate (5) is fixedly connected to the inner wall of the outer shell (1). The feed inlet (2) and the liquid inlet (3) are located above the inclined plate (5). An inclined surface is machined on the side of the inclined plate (5) near the feed inlet (2) and the liquid inlet (3). A central cylinder (7) is provided at the center of the interior of the outer shell (1). The upper end of the central cylinder (7) is fixedly connected to the lower end of the inclined plate (5), and the lower end of the central cylinder (7) is fixedly connected to the inner wall of the outer shell (1). The interior of the central cylinder (7) is processed into a hollow cavity. A partition plate (8) is fixedly installed inside the central cylinder (7). A vision sensor is fixedly installed on the inner wall of the central cylinder (7) above the partition plate (8). A scraper (6) is provided above the partition plate (8). The scraper (6) is fixedly connected to the output end of the motor (4). Several batching components (9) are provided below the partition plate (8). The material distribution assembly (9) includes a material distribution shell (10), the interior of which is processed into a hollow structure. A bracket (11) is fixedly installed inside the material distribution shell (10). A drive component (12) is fixedly installed at the upper end of the bracket (11). A baffle (13) is fixedly installed at the upper end of the output end of the drive component (12). The baffle (13) has a conical shape. A pressure sensing module is provided on the connection side between the drive component (12) and the baffle (13). The lower end of the material distribution component (9) is provided with a partition plate 2 (14). The lower end of the partition plate 2 (14) is equipped with a driving component 2 (15), the output end of the driving component 2 (15) is fixedly equipped with a motor 2 (16), the output shaft of the motor 2 (16) is fixedly equipped with a grinding head (17), and a base (18) is provided below the grinding head (17). A guide box (20) is fixedly installed at the lower end of the base (18). The lower end of the feed box (20) is connected to a microfluidic box (22), and an extraction box (28) is disposed below the microfluidic box (22). The guide box (20) is provided with a driving component three (23) on the right side. The driving component three (23) is fixedly installed at the lower end of the base (18). The output end of the driving component three (23) is fixedly connected to a motor three (24). The output shaft of the motor three (24) is fixedly installed with a pressure plate (25). A waste box (30) is fixedly installed on the outer periphery of the outer wall of the outer shell (1). A motor four (39) is fixedly installed on the outer side of the waste box (30). The motor four (39) is a servo motor. A track (26) is provided on the rear side below the microfluidic box (22). The extraction box (28) is at the same horizontal height as the track (26). A solvent tube (40) is provided in the gap between the central cylinder (7) and the outer shell (1). The upper end of the solvent tube (40) passes through the inclined plate (5) and communicates with the liquid inlet (3). The lower end of the solvent tube (40) passes through the central cylinder (7) and communicates with the microfluidic box (22). With other conditions remaining unchanged, the extraction steps for different raw materials are as follows, based on actual production conditions: Step 1: The raw material is fed into the outer shell (1) through the feed inlet (2), and the raw material is evenly distributed by the scraper (6) and the material distribution component (9); Step 2: Using the second driving component (15), adjust the positional relationship between the grinding head (17) and the base (18) to ensure that the raw material is ground to the target size; Step 3: Using the motor 4 (39), drive the extraction box (28) to move to different positions to complete the preparation of raw material powder cake, powder cake extraction and cleaning in sequence.

2. The continuous extraction device based on ultrasonic and microfluidic technology according to claim 1, characterized in that: The upper and lower ends of the material distribution shell (10) pass through the first partition (8) and the second partition (14) respectively. The base (18) is fixedly connected to the interior of the central cylinder (7). The base (18) has a second inclined surface on the side near the grinding head (17). The inclination angle of the second inclined surface is the same as that of the grinding head (17).

3. The continuous extraction device based on ultrasonic and microfluidic technology according to claim 2, characterized in that: The base (18) has several sets of discharge ports (19), and the discharge ports (19) pass through the base (18) and are evenly distributed around the central axis of the base (18).

4. The continuous extraction device based on ultrasonic and microfluidic technology according to claim 3, characterized in that: The material guide box (20) is connected to the center of the lower end of the material guide tube (21). The upper and lower ends of the extraction box (28) are open structures. The filter screen (29) is fixedly installed at the lower opening of the extraction box (28).

5. The continuous extraction device based on ultrasonic and microfluidic technology according to claim 4, characterized in that: The extraction box (28) has the same diameter as the microfluidic box (22). A boss (33) is machined on one side of the microfluidic box (22), and an ultrasonic generator (35) is installed on the outside of the boss (33).

6. The continuous extraction device based on ultrasonic and microfluidic technology according to claim 5, characterized in that: A discharge pipe (36) is provided directly below the microfluidic box (22). The horizontal height of the discharge pipe (36) is lower than that of the extraction box (28). The lower end of the discharge pipe (36) is fixedly connected to the inner wall of the outer shell (1). An ultrasonic generator (37) and an ultrasonic receiver (38) are symmetrically installed on the outer periphery of the discharge pipe (36).

7. The continuous extraction device based on ultrasonic and microfluidic technology according to claim 6, characterized in that: The track (26) has a slide on the side near the extraction box (28), and a lead screw (27) is provided inside the slide. The lead screw (27) is connected to the nut of the extraction box (28).

8. The continuous extraction device based on ultrasonic and microfluidic technology according to claim 7, characterized in that: One end of the track (26) passes through the central cylinder (7), the outer shell (1) and the waste box (30), and the other end of the track (26) is fixedly connected to the inner wall of the central cylinder (7). One end of the lead screw (27) is connected to the output end of the motor (39) through a coupling. The other end of the lead screw (27) is connected to a support ear seat with a bearing. The support ear seat is located inside the slide at the connection end of the track (26) and the central cylinder (7).

9. The continuous extraction device based on ultrasonic and microfluidic technology according to claim 8, characterized in that: A water inlet pipe (32) is fixedly installed at the upper end of the waste box (30). The water inlet pipe (32) is connected to an external water source. A water tank (31) is fixedly connected to one end of the water inlet pipe (32) inside the waste box (30). The diameter of the water tank (31) is the same as the diameter of the extraction box (28). A second boss (34) is provided on the lower end face inside the waste box (30). The second boss (34) is located directly below the water tank (31). Several through holes are evenly provided around the second boss (34) on the lower end face of the inner wall of the waste box (30).

Images