A rotary evaporator for purification of soybean lecithin

Abstract

The application discloses a rotary evaporator for soybean lecithin purification processing, which comprises a processing barrel, a feeding pipe is fixedly installed on the processing barrel, a servo motor, a bearing disc and a bottom disc are fixedly installed in the processing barrel, a rotating shaft is rotatably installed between the driving end of the servo motor and the bearing disc and the bottom disc, a plurality of stirring rods are installed between the rotating shaft and the processing barrel through a rotating mechanism, a receiving ring groove is formed in the bearing disc, a receiving box is rotatably installed at the lower portion of the bearing disc, a plurality of discharging pipes are fixedly installed in the bearing disc, a blocking mechanism is installed in each discharging pipe, and a rotating cylinder is fixedly installed on the rotating shaft. The soybean lecithin raw solution can be fully stirred and rotated to eliminate the precipitate in the raw solution, the concentration of the raw solution is uniform, the rotary heating and evaporation mode can be adopted to quickly evaporate and extrude and separate the soybean lecithin, and the purification efficiency is higher.

Description

Technical Field

[0001] This invention relates to the technical field of soybean lecithin purification, and more particularly to a rotary evaporator for soybean lecithin purification and processing. Background Technology

[0002] Soy lecithin refers to glycerol esters containing phosphate groups produced in refined soybean oil. It has the effects of delaying aging and preventing cardiovascular and cerebrovascular diseases. During the processing of soybean lecithin, it is usually purified by evaporation to increase its concentration.

[0003] Existing evaporators still have the following shortcomings in use:

[0004] 1. Existing evaporators typically place the raw liquid in a pipe and allow it to flow, while heating and evaporating it during the flow to extract and purify the soybean lecithin in the raw liquid. However, in existing technologies, the flow rate of soybean lecithin in the pipe is relatively slow, the heating rate during evaporation is slow and uneven, and the purification efficiency is low.

[0005] 2. Soybean lecithin may have some precipitation before processing, resulting in uneven concentration of its original solution. This means that different concentrations of the original solution require different heating times during evaporation. Existing evaporators cannot perform segmented heating, which leads to incomplete evaporation and purification, thus having certain limitations.

[0006] Therefore, there is an urgent need to design a rotary evaporator for the purification and processing of soybean lecithin to solve the above problems.

[0007] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0008] The purpose of this invention is to solve the problems of slow flow rate, uneven heating, and precipitation affecting evaporation efficiency in the prior art, and to propose a rotary evaporator for the purification and processing of soybean lecithin.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A rotary evaporator for purifying and processing soybean lecithin includes a processing barrel, a feed pipe fixedly installed on the processing barrel, a servo motor, a support plate, and a base plate fixedly installed inside the processing barrel, and a rotating shaft rotatably installed between the drive end of the servo motor and the support plate and the base plate, and multiple stirring rods are installed between the rotating shaft and the processing barrel through a rotating mechanism.

[0011] The bearing plate has a storage ring groove, and a storage box is rotatably installed on the lower part of the bearing plate. Multiple feeding pipes are fixedly installed in the bearing plate, and each feeding pipe is equipped with a blocking mechanism. A rotating cylinder is fixedly installed on the rotating shaft, and the upper end of the rotating cylinder is fixedly installed on the lower part of the storage box. A guide pipe is fixedly installed between the rotating cylinder and the storage box.

[0012] A center plate is fixedly installed inside the processing barrel, and the center plate is rotatably connected to the rotating cylinder. A spiral evaporator tube is fixedly installed inside the rotating cylinder, and multiple heating rods are fixedly installed inside the spiral evaporator tube. An electric valve is fixedly installed at the liquid outlet end of the spiral evaporator tube. A connecting pipe is fixedly installed between the liquid inlet end of the spiral evaporator tube and the feed guide pipe. A feed guide mechanism is installed between the spiral evaporator tube and the processing barrel.

[0013] In the aforementioned rotary evaporator for purifying and processing soybean lecithin, the rotating mechanism includes multiple connecting rods fixedly mounted on a rotating shaft. The ends of the multiple connecting rods are jointly fixedly mounted with a driven ring. Multiple driven rods are fixedly mounted on the driven ring. Multiple self-resetting rotating shafts are rotatably mounted on each driven rod, and multiple stirring rods are respectively fixedly mounted on multiple corresponding self-resetting rotating shafts.

[0014] In the aforementioned rotary evaporator for purifying and processing soybean lecithin, the barrier mechanism includes a fixed plate fixedly installed inside the feed pipe. A stepped groove is provided inside the fixed plate. A barrier plate is installed inside the stepped groove through a sliding structure. Multiple return spring rods are fixedly installed between the barrier plate and the inner wall of the stepped groove.

[0015] In the aforementioned rotary evaporator for purifying and processing soybean lecithin, the sliding structure includes multiple trapezoidal slide bars fixedly installed on the inner wall of the stepped groove, and the barrier plate has multiple trapezoidal grooves, with the multiple trapezoidal slide bars respectively engaging and installed in the multiple trapezoidal grooves.

[0016] In the above-mentioned rotary evaporator for purifying and processing soybean lecithin, the material guiding mechanism includes multiple air outlet pipes fixedly installed on the spiral evaporation tube, and each air outlet pipe is fixedly installed with a permeable membrane. The bottom of the rotating cylinder is fixedly installed with a drain pipe, and multiple material discharge pipes that cooperate with the drain pipe are fixedly installed on the processing barrel. An air guiding structure is installed between the rotating cylinder and the storage box.

[0017] In the above-mentioned rotary evaporator for purifying and processing soybean lecithin, the gas guiding structure includes multiple upper gas pipes fixedly installed between the rotating cylinder and the storage box. Multiple gas guiding pipes are fixedly installed on the side wall of the storage box, and one-way valves are fixedly installed in the multiple gas guiding pipes and the multiple upper gas pipes. Multiple discharge pipes located on the upper part of the middle plate are fixedly installed on the processing barrel.

[0018] In the aforementioned rotary evaporator for purifying and processing soybean lecithin, a plurality of inverted condensing cones are fixedly installed on the central plate, and the plurality of condensing cones are located between the inner wall of the processing barrel and the outer wall of the rotating barrel.

[0019] In the aforementioned rotary evaporator for purifying and processing soybean lecithin, each stirring rod is provided with multiple stirring holes, a cleaning scraper is slidably installed inside the processing barrel, and multiple compression springs are fixedly installed between the cleaning scraper and the driven ring. An elastic traction rope is fixedly connected between the end of each stirring rod and the cleaning scraper.

[0020] In the aforementioned rotary evaporator for purifying and processing soybean lecithin, the rotating mechanism includes a transmission screw fixedly mounted on a rotating shaft, a ball nut fitted on the transmission screw, multiple connecting rods fixedly mounted on the outer wall of the ball nut, a connecting ring fixedly mounted at the ends of the multiple connecting rods, a driven ring rotatably mounted on the connecting ring, multiple driven rods fixedly mounted on the driven ring, multiple self-resetting rotating shafts rotatably mounted on each driven rod, and multiple stirring rods fixedly mounted on multiple corresponding self-resetting rotating shafts, a vertical rack fixedly mounted inside the processing barrel, and a helical toothed ring that mates with the vertical rack fixedly mounted on the outer side of the connecting ring.

[0021] Compared with existing technologies, the advantages of this invention are:

[0022] 1. By setting up a support plate, the soybean lecithin concentrate enters the processing tank through the feed pipe during processing and falls into the collection ring groove on the support plate, thus completing the initial feeding of soybean lecithin.

[0023] 2: By setting up stirring rods, when the soybean lecithin stock solution accumulates on the support plate, the servo motor will start and drive the rotating shaft to rotate. When the rotating shaft rotates, it will drive multiple stirring rods to rotate in conjunction with the rotating mechanism. When multiple stirring rods rotate, they will stir the stock solution, thereby eliminating the precipitate in the stock solution, ensuring that the concentration of the stock solution is the same, which is convenient for heating and evaporation.

[0024] 3: By setting up a rotating drum, after the soybean lecithin is stirred and mixed, it will fall into the collection box through multiple feeding pipes, and will be injected into the spiral evaporation tube inside the rotating drum through the guide pipe and connecting pipe, where it will accumulate, thus completing the conduction and collection of the original liquid.

[0025] 4: By setting up a spiral evaporator, when the soybean lecithin stock solution is inside the spiral evaporator, multiple heating rods are activated to heat the stock solution. At this time, the rotating shaft will rotate, causing the rotating cylinder, spiral evaporator and stock solution to rotate together. That is, the stock solution will rotate while being heated, which can make the stock solution contact the heating rods more fully and be heated more evenly, and also facilitate the exhaust of the gas after evaporation.

[0026] 5: By setting up a permeation membrane, when the spiral evaporator tube rotates and heats the raw liquid for evaporation, the soybean lecithin in the raw liquid will vaporize into a steam state. Under the action of centrifugal force of the spiral evaporator tube, it will enter the outlet pipe and squeeze the permeation membrane, thus being squeezed out from the permeation membrane into the rotating cylinder, thereby completing the separation of the raw liquid and soybean lecithin, and thus completing the purification of soybean lecithin.

[0027] In summary, this invention eliminates precipitation in soybean lecithin stock solution by employing thorough rotational stirring, ensuring uniform concentration of the stock solution. Furthermore, the use of rotary heating evaporation allows for rapid evaporation and extrusion separation of soybean lecithin, resulting in higher purification efficiency. Attached Figure Description

[0028] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a schematic diagram of the structure of a rotary evaporator for purifying and processing soybean lecithin proposed in this invention;

[0030] Figure 2 for Figure 1 Cross-sectional view of the intermediate processing barrel and its internal structure;

[0031] Figure 3 for Figure 1 Schematic diagram of the internal structure of the intermediate processing barrel;

[0032] Figure 4 for Figure 3 Schematic diagram of the internal structure of the feed tube;

[0033] Figure 5 for Figure 3 Enlarged view of the rotating cylinder, the storage box, and the connection structure between the two;

[0034] Figure 6 for Figure 5 Cross-sectional view of the rotating cylinder, the storage box, and the connecting structure between the two;

[0035] Figure 7 for Figure 6 A front view of the rotating cylinder, the storage box, and the connecting structure between them.

[0036] In the diagram: 1. Processing tank, 2. Feed pipe, 3. Discharge pipe one, 4. Discharge pipe two, 5. Servo motor, 6. Bearing plate, 7. Driven ring, 8. Rotating shaft, 9. Base plate, 10. Center plate, 11. Rotating cylinder, 12. Spiral evaporation tube, 13. Connecting rod, 14. Driven rod, 15. Self-resetting rotating shaft, 16. Stirring rod, 17. Discharge pipe, 18. Fixed plate, 19. Stepped groove, 20. Barrier plate, 21. Reset spring rod, 22. Storage box, 23. Air guide pipe, 24. Feed guide pipe, 25. Air supply pipe, 26. Liquid drain pipe, 27. Connecting pipe, 28. Air outlet pipe, 29. Permeable membrane. Detailed Implementation

[0037] 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.

[0038] Example 1

[0039] Reference Figure 1-3 A rotary evaporator for purifying and processing soybean lecithin includes a processing barrel 1, a feed pipe 2 fixedly installed on the processing barrel 1, a servo motor 5, a support plate 6, and a base plate 9 fixedly installed inside the processing barrel 1, and a rotating shaft 8 rotatably installed between the drive end of the servo motor 5 and the support plate 6 and the base plate 9, and multiple stirring rods 16 are installed between the rotating shaft 8 and the processing barrel 1 through a rotating mechanism.

[0040] The following points are worth noting:

[0041] 1. A receiving ring groove is provided in the bearing plate 6. When processing soybean lecithin raw liquid, it will enter the processing barrel 1 through the feed pipe 2 and fall into the receiving ring groove on the bearing plate 6, thus completing the initial feeding of soybean lecithin raw liquid.

[0042] 2. The rotating shaft 8 is fixedly installed on the drive end of the servo motor 5. The rotating shaft 8 passes through the bearing plate 6 and the chassis 9, and the rotating shaft 8 is rotatably connected to the bearing plate 6 and the chassis 9.

[0043] 3. The rotating mechanism includes multiple connecting rods 13 fixedly installed on the rotating shaft 8. The ends of the multiple connecting rods 13 are all fixedly installed with a driven ring 7. Multiple driven rods 14 are fixedly installed on the driven ring 7. Multiple self-resetting rotating shafts 15 are rotatably installed on each driven rod 14. Multiple stirring rods 16 are respectively fixedly installed on multiple corresponding self-resetting rotating shafts 15. When the servo motor 5 is started, it will drive the rotating shaft 8 to rotate. When the rotating shaft 8 rotates, it will drive the driven ring 7 and multiple driven rods 14 to rotate under the action of the multiple connecting rods 13, thereby driving the multiple stirring rods 16 to rotate.

[0044] 4. When the soybean lecithin stock solution accumulates on the support plate 6, the servo motor 5 will start and drive the rotating shaft 8 to rotate. When the rotating shaft 8 rotates, it will drive multiple stirring rods 16 to rotate under the cooperation of the rotating mechanism. When the multiple stirring rods 16 rotate, they will stir the stock solution, thereby eliminating the precipitate in the stock solution, ensuring that the concentration of the stock solution is the same, and facilitating heating and evaporation.

[0045] 5. Each stirring rod 16 has multiple stirring holes. The self-resetting shaft 15 has a self-resetting function and is a commonly used self-resetting spring shaft in the prior art. When stirring the soybean lecithin stock solution, the stirring rod 16 will oscillate back and forth under the action of the self-resetting shaft 15, which can further increase the stirring efficiency of the stock solution and make the removal of sediment more rapid.

[0046] 6. A cleaning scraper ring is slidably installed inside the processing barrel 1, and multiple compression springs are fixedly installed between the cleaning scraper ring and the driven ring 7. An elastic traction rope is fixedly connected between the end of each stirring rod 16 and the cleaning scraper ring. When the stirring rod 16 rotates and stirs and swings back and forth, it will pull the cleaning scraper ring under the action of the elastic traction rope. With the cooperation of multiple compression springs, the cleaning scraper ring will slide up and down inside the processing barrel 1, thereby scraping off the soybean lecithin liquid adhering to the inner wall of the processing barrel 1.

[0047] Reference Figure 4-6 A storage box 22 is rotatably mounted on the lower part of the bearing plate 6. Multiple feeding pipes 17 are fixedly installed inside the bearing plate 6, and each feeding pipe 17 is equipped with a blocking mechanism. A rotating cylinder 11 is fixedly mounted on the rotating shaft 8, and the upper end of the rotating cylinder 11 is fixedly mounted on the lower part of the storage box 22. A guide pipe 24 is fixedly installed between the rotating cylinder 11 and the storage box 22. A spiral evaporation tube 12 is fixedly installed inside the rotating cylinder 11. A connecting pipe 27 is fixedly installed between the liquid inlet end of the spiral evaporation tube 12 and the guide pipe 24.

[0048] The following points are worth noting:

[0049] 1. After the soybean lecithin is mixed, it will fall into the collection box 22 through multiple feeding pipes 17, and will be injected into the spiral evaporation tube 12 in the rotating cylinder 11 through the guide pipe 24 and connecting pipe 27, where it will accumulate, thus completing the transfer of the original liquid.

[0050] 2. The blocking mechanism includes a fixed plate 18 fixedly installed inside the feed pipe 17. A stepped groove 19 is opened in the fixed plate 18. A blocking plate 20 is installed in the stepped groove 19 through a sliding structure. Multiple return spring rods 21 are fixedly installed between the blocking plate 20 and the inner wall of the stepped groove 19. The blocking mechanism plays a role in blocking one-way flow, so that the soybean lecithin raw liquid can only fall from top to bottom through the feed pipe 17 and will not backflow.

[0051] 3. The sliding structure includes multiple trapezoidal slide bars fixedly installed on the inner wall of the stepped groove 19. Multiple trapezoidal slide grooves are opened in the barrier plate 20, and the multiple trapezoidal slide bars are respectively engaged and installed in the multiple trapezoidal slide grooves. The sliding structure is used to make the barrier plate 20 slide vertically up and down in the stepped groove 19, without offsetting or separating from the stepped groove 19.

[0052] Reference Figure 2 as well as Figure 5-7 A central plate 10 is fixedly installed inside the processing barrel 1, and the central plate 10 is rotatably connected to the rotating cylinder 11. Multiple heating rods are fixedly installed inside the spiral evaporation tube 12. An electric valve is fixedly installed at the liquid outlet end of the spiral evaporation tube 12. A material guiding mechanism is installed between the spiral evaporation tube 12 and the processing barrel 1.

[0053] The following points are worth noting:

[0054] 1. After the soybean lecithin stock solution enters the spiral evaporator tube 12, multiple heating rods will start to heat the stock solution. At this time, the rotating shaft 8 will rotate, driving the rotating cylinder 11, the spiral evaporator tube 12 and the stock solution to rotate together. That is, the stock solution will rotate while being heated, which can make the stock solution contact the heating rods more fully and be heated more evenly, and also facilitate the exhaust of the gas after evaporation.

[0055] 2. The feeding mechanism includes multiple air outlet pipes 28 fixedly installed on the spiral evaporator tube 12, and each air outlet pipe 28 is fixedly installed with a permeation membrane 29. When the spiral evaporator tube 12 rotates and heats the raw liquid for evaporation, the soybean lecithin in the raw liquid will vaporize into a steam state and enter the air outlet pipe 28 under the action of centrifugal force of the spiral evaporator tube 12 rotation, and squeeze the permeation membrane 29, thereby being squeezed out from the permeation membrane 29 into the rotating cylinder 11.

[0056] 3. A drain pipe 26 is fixedly installed at the bottom of the rotating cylinder 11, and multiple discharge pipes 4 that cooperate with the drain pipe 26 are fixedly installed on the processing barrel 1. After the soybean lecithin in the raw liquid has evaporated, the electric valve in the spiral evaporation tube 12 will open. At this time, the remaining impurities in the raw liquid will fall into the rotating cylinder 11 and be discharged to the outside of the processing barrel 1 through the drain pipe 26 and multiple discharge pipes 4.

[0057] 4. An air guiding structure is installed between the rotating cylinder 11 and the storage box 22. The air guiding structure includes multiple air inlet pipes 25 fixedly installed between the rotating cylinder 11 and the storage box 22. Multiple air guide pipes 23 are fixedly installed on the side wall of the storage box 22. One-way valves are fixedly installed in the multiple air guide pipes 23 and the multiple air inlet pipes 25. Multiple discharge pipes 3 located on the upper part of the middle plate 10 are fixedly installed on the processing barrel 1.

[0058] After entering the rotating drum 11, the soybean lecithin vapor will automatically rise and enter the space between the rotating drum 11 and the processing barrel 1 through multiple air inlet pipes 25 and multiple air guide pipes 23, thus completing the separation and purification of soybean lecithin. After the soybean lecithin is condensed and liquefied, it will accumulate on the middle plate 10 and can be discharged and collected through multiple discharge pipes 3.

[0059] 5. Multiple inverted condensing cones are fixedly installed on the middle plate 10, and the multiple condensing cones are located between the inner wall of the processing barrel 1 and the outer wall of the rotating cylinder 11. A heat dissipation rod is fixedly installed on the condensing cone by a shape memory alloy rod, and the heat dissipation rod is slidably connected to the processing barrel 1. When the steam-state soybean lecithin comes into contact with the shape memory alloy rod, it will be heated and deformed, thereby pushing the heat dissipation rod to the outside of the processing barrel 1. This allows the heat of the soybean lecithin to be quickly conducted to the outside of the processing barrel 1 for rapid heat dissipation, increasing its condensation and liquefaction efficiency.

[0060] Example 2

[0061] Compared to the above embodiment 1, it also has the following differences: The rotating mechanism includes a transmission screw fixedly installed on the rotating shaft 8, a ball nut is fitted on the transmission screw, a plurality of connecting rods 13 are fixedly installed on the outer wall of the ball nut, a connecting ring is fixedly installed at the end of the plurality of connecting rods 13, and a driven ring 7 is rotatably installed on the connecting ring, a plurality of driven rods 14 are fixedly installed on the driven ring 7, a plurality of self-resetting rotating shafts 15 are rotatably installed on each driven rod 14, and a plurality of stirring rods 16 are respectively fixedly installed on a plurality of corresponding self-resetting rotating shafts 15. A vertical rack is fixedly installed inside the processing barrel 1, and a helical toothed ring that cooperates with the vertical rack is fixedly installed on the outer side of the connecting ring.

[0062] When the rotating shaft 8 rotates, it drives the transmission screw to rotate. When the transmission screw rotates, the ball nut installed on it will move up and down on the outside of the transmission screw, thereby driving the connecting ring, driven ring 7, driven rod 14 and multiple stirring rods 16 to move up and down as a whole. When the connecting ring moves up and down, its outer helical tooth ring will contact and mesh with the vertical rack, thereby causing it to rotate. This allows the stirring rods 16 to rotate and stir while moving up and down, thereby effectively increasing the stirring contact range between the stirring rods 16 and soybean lecithin, and effectively increasing the stirring and mixing efficiency.

[0063] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0064] In this invention, the soybean lecithin stock solution enters the processing tank 1 through the feed pipe 2 during processing and falls into the receiving ring groove on the support plate 6. At this time, the servo motor 5 will start and drive the rotating shaft 8 to rotate. When the rotating shaft 8 rotates, it will drive multiple stirring rods 16 to rotate under the cooperation of the rotating mechanism. When the multiple stirring rods 16 rotate, they will stir the stock solution, thereby eliminating the sediment in the stock solution.

[0065] After the soybean lecithin is mixed, it will fall into the collection box 22 through multiple feeding pipes 17, and will be injected into the spiral evaporation tube 12 in the rotating cylinder 11 through the guide pipe 24 and connecting pipe 27 and accumulate there. Multiple heating rods will then be activated to heat the original liquid. At this time, the rotating shaft 8 will rotate, causing the rotating cylinder 11, the spiral evaporation tube 12 and the original liquid to rotate together. That is, the original liquid will be rotated while being heated, so that the original liquid can come into more full contact with the heating rods and be heated more evenly.

[0066] The soybean lecithin in the original solution will vaporize into steam during heating and evaporation. Under the centrifugal force of the rotating spiral evaporator 12, it will enter the outlet pipe 28 and squeeze the permeation membrane 29, thus being squeezed out from the permeation membrane 29 into the rotating cylinder 11. After entering the rotating cylinder 11, the soybean lecithin vapor will automatically rise and enter the space between the rotating cylinder 11 and the processing tank 1 through multiple air inlet pipes 25 and multiple air guide pipes 23, completing the separation and purification of soybean lecithin. After the soybean lecithin is condensed and liquefied, it will accumulate on the intermediate plate 10 and can be discharged and collected through multiple discharge pipes 3.

Claims

1. A rotary evaporator for purifying and processing soybean lecithin, comprising a processing tank (1), characterized in that, A feed pipe (2) is fixedly installed on the processing barrel (1). A servo motor (5), a bearing plate (6), and a chassis (9) are fixedly installed inside the processing barrel (1). A rotating shaft (8) is rotatably installed between the drive end of the servo motor (5), the bearing plate (6), and the chassis (9). Multiple stirring rods (16) are installed between the rotating shaft (8) and the processing barrel (1) through a rotating mechanism. The bearing plate (6) has a storage ring groove, and a storage box (22) is rotatably installed on the lower part of the bearing plate (6). Multiple feeding pipes (17) are fixedly installed in the bearing plate (6), and each feeding pipe (17) is equipped with a blocking mechanism. A rotating cylinder (11) is fixedly installed on the rotating shaft (8), and the upper end of the rotating cylinder (11) is fixedly installed on the lower part of the storage box (22). A guide pipe (24) is fixedly installed between the rotating cylinder (11) and the storage box (22). A center plate (10) is fixedly installed inside the processing barrel (1), and the center plate (10) is rotatably connected to the rotating cylinder (11). A spiral evaporator (12) is fixedly installed inside the rotating cylinder (11), and multiple heating rods are fixedly installed inside the spiral evaporator (12). An electric valve is fixedly installed at the liquid outlet end of the spiral evaporator (12). A connecting pipe (27) is fixedly installed between the liquid inlet end of the spiral evaporator (12) and the feed guide pipe (24). A feed guide mechanism is installed between the spiral evaporator (12) and the processing barrel (1).

2. The rotary evaporator for purifying and processing soybean lecithin according to claim 1, characterized in that, The rotating mechanism includes multiple connecting rods (13) fixedly installed on a rotating shaft (8). The ends of the multiple connecting rods (13) are jointly fixedly installed with a driven ring (7). Multiple driven rods (14) are fixedly installed on the driven ring (7). Multiple self-resetting rotating shafts (15) are rotatably installed on each driven rod (14). Multiple stirring rods (16) are respectively fixedly installed on multiple corresponding self-resetting rotating shafts (15).

3. The rotary evaporator for purifying and processing soybean lecithin according to claim 1, characterized in that, The blocking mechanism includes a fixed plate (18) fixedly installed in the feed pipe (17), a stepped groove (19) is provided in the fixed plate (18), a blocking plate (20) is installed in the stepped groove (19) through a sliding structure, and a plurality of reset spring rods (21) are fixedly installed between the blocking plate (20) and the inner wall of the stepped groove (19).

4. The rotary evaporator for purifying and processing soybean lecithin according to claim 3, characterized in that, The sliding structure includes multiple trapezoidal slide bars fixedly installed on the inner wall of the stepped groove (19), and multiple trapezoidal slide grooves are opened in the barrier plate (20), and the multiple trapezoidal slide bars are respectively engaged and installed in the multiple trapezoidal slide grooves.

5. The rotary evaporator for purifying and processing soybean lecithin according to claim 1, characterized in that, The material guiding mechanism includes multiple air outlet pipes (28) fixedly installed on the spiral evaporation tube (12), and each air outlet pipe (28) is fixedly installed with a permeation membrane (29). The bottom of the rotating cylinder (11) is fixedly installed with a drain pipe (26), and multiple discharge pipes (4) that cooperate with the drain pipe (26) are fixedly installed on the processing barrel (1). A gas guiding structure is installed between the rotating cylinder (11) and the storage box (22).

6. The rotary evaporator for purifying and processing soybean lecithin according to claim 5, characterized in that, The air guiding structure includes multiple air inlet pipes (25) fixedly installed between the rotating cylinder (11) and the storage box (22). Multiple air guide pipes (23) are fixedly installed on the side wall of the storage box (22), and one-way valves are fixedly installed in the multiple air guide pipes (23) and the multiple air inlet pipes (25). Multiple discharge pipes (3) located on the upper part of the middle plate (10) are fixedly installed on the processing barrel (1).

7. The rotary evaporator for purifying and processing soybean lecithin according to claim 6, characterized in that, Multiple inverted condensing cones are fixedly installed on the center plate (10), and the multiple condensing cones are located between the inner wall of the processing barrel (1) and the outer wall of the rotating cylinder (11).

8. The rotary evaporator for purifying and processing soybean lecithin according to claim 2, characterized in that, Each of the stirring rods (16) has multiple stirring holes. A cleaning scraper ring is slidably installed inside the processing barrel (1), and multiple compression springs are fixedly installed between the cleaning scraper ring and the driven ring (7). An elastic traction rope is fixedly connected between the end of each stirring rod (16) and the cleaning scraper ring.

9. The rotary evaporator for purifying and processing soybean lecithin according to claim 1, characterized in that, The rotating mechanism includes a transmission screw fixedly mounted on a rotating shaft (8), a ball nut fitted on the transmission screw, a plurality of connecting rods (13) fixedly mounted on the outer wall of the ball nut, a connecting ring fixedly mounted at the ends of the plurality of connecting rods (13), and a driven ring (7) rotatably mounted on the connecting ring, a plurality of driven rods (14) fixedly mounted on the driven ring (7), a plurality of self-resetting rotating shafts (15) rotatably mounted on each driven rod (14), and a plurality of stirring rods (16) fixedly mounted on a plurality of corresponding self-resetting rotating shafts (15), a vertical rack fixedly mounted inside the processing barrel (1), and a helical toothed ring that cooperates with the vertical rack fixedly mounted on the outer side of the connecting ring.

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