Equipment and method for preparing spray condensation microcapsules

Abstract

The invention discloses equipment and a method for preparing spray condensation microcapsules, and relates to the technical field of spray condensation microcapsule preparation, the equipment comprises a melting homogenizing kettle and a condensing tower, a spray head is arranged in the condensing tower, and a movable spray mechanism used for enabling the spray head to move circumferentially and swing back and forth at the same time is mounted on the condensing tower. Through the arrangement of the movable spraying mechanism, the spraying head can spray material liquid drops in the condensing tower in a back-and-forth swinging manner while moving circumferentially, so that the material liquid drops can be uniformly dispersed in a wider area and can be in contact with more cold air, local supercooling or superheating is avoided, and a more uniform cooling effect is obtained; meanwhile, through the matched arrangement of the spiral blades, cooling airflow can spirally flow and be uniformly distributed, the gas-liquid contact area is increased, the gas-liquid contact time is prolonged, gas-liquid exchange is more sufficient, finally, it can be ensured that each material liquid drop can be sufficiently cooled, and the embedding efficiency and the quality of microcapsules are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of spray condensation microcapsule preparation, and in particular to a preparation device and method for spray condensation microcapsule. Background Art

[0002] The spray condensation process is one of the most commonly used processes for producing microcapsules. Its principle is to disperse the core material in the molten low-melting-point wall material for mixing and homogenization. After the materials are mixed and homogenized to a state suitable for spraying, the materials are transported through an infusion pipeline to a low-temperature spray condensation tower for atomization and condensation to form particles, thereby achieving the purpose of coating the effective substance with the wall material.

[0003] At present, when the microcapsule material is spray-condensed, the material droplets are mainly in contact with the cold air around the nozzle for condensation and solidification. During the spray condensation process, if the nozzle is fixed, the droplets may be concentratedly cooled in a certain area, resulting in the local temperature being too low, while the temperature in other areas is high. At this time, uneven cooling is likely to occur, which may lead to incomplete solidification of the wall material of the microcapsule, affecting the quality and embedding efficiency of the microcapsule. Therefore, the present invention discloses a preparation device and method for spray condensation microcapsules to meet people's needs. Summary of the invention

[0004] The object of the present invention is to provide a preparation device and method for spray condensation microcapsules to solve the problem raised in the above background technology that during the spray condensation process, if the nozzle is fixed, uneven cooling of droplets may occur, resulting in incomplete solidification of the wall material of the microcapsule, affecting the quality of the microcapsule and the embedding efficiency.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a preparation device for spray condensation microcapsules, comprising a melt homogenizing kettle and a condensation tower, wherein a spray head is arranged in the condensation tower, a mobile spray mechanism for making the spray head move in a circle and swing back and forth is installed on the condensation tower, a mixing mechanism for uniformly stirring the material is installed on the melt homogenizing kettle, the mobile spray mechanism is connected to the mixing mechanism, and a feeding assembly for conveying the material to the spray head is also connected to the melt homogenizing kettle; The mobile spray mechanism includes a hollow rotating shaft rotatably installed at the top center position of the condensation tower, a control component for rotating the hollow rotating shaft is installed on the condensation tower, a fixing plate is fixedly sleeved on the hollow rotating shaft, two first mounting plates are fixedly installed on the bottom of the fixing plate, the sides of the two first mounting plates are each provided with a first rotating hole, and mounting rotating shafts are rotatably installed in the two first rotating holes, the spray head is fixed on the ends of the two mounting rotating shafts close to each other, and a driving component for rotating the two mounting rotating shafts back and forth is installed on the fixing plate, the hollow rotating shaft is connected to the mixing mechanism, and when the control component is operated to rotate the hollow rotating shaft, the spray head will move in a circle through the fixing plate, the first mounting plate and the mounting rotating shaft, and at the same time, with the cooperation of the driving component, the mounting rotating shaft will also rotate back and forth, so that the spray head can swing back and forth while moving in a circle.

[0006] Preferably, the driving assembly includes two second mounting plates fixedly mounted on the bottom of the fixing plate, the sides of the two second mounting plates are provided with second rotating holes, and driving shafts are rotatably mounted in the two second rotating holes, connecting arms are fixedly mounted at both ends of the driving shaft, eccentric driving columns are fixedly mounted on the sides of the two connecting arms away from each other, connecting swing rods are fixedly mounted on the ends of the two mounting shafts away from each other, strip sliding holes are provided on the sides of the two connecting swing rods, and the two eccentric driving columns are respectively adapted to be mounted in the two strip sliding holes, a vertical rotating hole is provided at the top of the fixing plate, a vertical rotating shaft is rotatably mounted in the vertical rotating hole, a self-rotating gear is fixedly mounted on the top of the vertical rotating shaft, a plurality of straight rods are evenly fixedly mounted on the top inner wall of the condensation tower, an annular rack is fixedly mounted on the bottom ends of the plurality of straight rods, the self-rotating gear is meshed with the annular rack, and the bottom end of the vertical rotating shaft is connected to a gear transmission unit for driving the driving shaft to rotate synchronously.

[0007] Preferably, the gear transmission unit comprises a second bevel gear fixedly mounted on the bottom end of the vertical rotating shaft, a third bevel gear is fixedly sleeved on the driving rotating shaft, and the second bevel gear is meshed with the third bevel gear.

[0008] Preferably, the control component includes a control motor fixedly mounted on the top of the condensation tower, and first bevel gears are fixedly sleeved on the output end of the control motor and the hollow rotating shaft, and the two first bevel gears are meshed with each other.

[0009] Preferably, spiral blades are fixedly provided on the inner wall of the condensation tower.

[0010] Preferably, the mixing mechanism includes an L-shaped support plate fixedly mounted on the top of the molten homogenizing kettle, a support rotating hole is provided on the top of the L-shaped support plate, a hexagonal rotating shaft is rotatably installed in the support rotating hole, a movable rotating shaft is slidably sleeved on the hexagonal rotating shaft, a movable hole is provided on the top of the molten homogenizing kettle, the bottom end of the movable rotating shaft passes through the movable hole, a plurality of stirring rods are evenly fixed on the movable rotating shaft, a transmission pulley is fixedly sleeved on the top end of the hexagonal rotating shaft and the hollow rotating shaft, a transmission belt is commonly tensioned on the two transmission pulleys, and a reciprocating moving component for moving the movable rotating shaft up and down is connected to the hexagonal rotating shaft.

[0011] Preferably, the reciprocating assembly includes a horizontal rotating shaft rotatably mounted on the inner wall of the side portion of the L-shaped supporting plate, the end portion of the horizontal rotating shaft and the hexagonal rotating shaft are fixedly sleeved with a fourth bevel gear, the two fourth bevel gears are arranged in meshing relationship, an eccentric cam is fixedly sleeved on the horizontal rotating shaft, a vertical guide rod is fixedly mounted on the top of the molten homogenizing kettle, an L-shaped connecting plate is slidably sleeved on the vertical guide rod, a connecting bearing is fixedly mounted on the side of the L-shaped connecting plate, the connecting bearing is fixedly sleeved on the moving rotating shaft, a resistance plate is fixedly mounted on the top of the L-shaped connecting plate, the top of the resistance plate is in contact with the circumferential side of the eccentric cam, and an elastic extrusion unit for squeezing the resistance plate to reset it upward is installed on the molten homogenizing kettle.

[0012] Preferably, the elastic extrusion unit comprises a plurality of extrusion springs uniformly and fixedly mounted on the top of the molten homogenizing kettle, and the top ends of the plurality of extrusion springs are fixedly mounted on the bottom of the abutting shifting plate.

[0013] Preferably, the feeding assembly includes a feed pump fixed on the side of the molten homogenization kettle, the feed port of the feed pump is fixed on the bottom of the molten homogenization kettle, the discharge port of the feed pump is rotatably connected to a connecting pipe through a rotating joint, the connecting pipe is fixed in the hollow rotating shaft, and the bottom end of the connecting pipe is connected to the spray head through a hose.

[0014] The present invention also discloses a method for using a spray condensation microcapsule preparation device, the method comprising: S1. Put the core material and the wall material into a melting homogenizing kettle for heating and melting, start the control motor, make the stirring rod rotate and move up and down to stir and mix the materials until the materials are in a homogenous state; S2, introducing a cold air flow into the condensing tower, and starting the pumping pump to spray and condense the homogenate in the molten homogenizing kettle through the spray head in the condensing tower; S3. During this process, the control motor operation will also drive the spray head to move in a circle inside the condensation tower and swing back and forth at the same time. With the help of the spiral blades, the cooling air flow will flow in a spiral inside the condensation tower, so that the material droplets will be evenly condensed and solidified, and finally quickly condensed into solid particles to form microcapsules.

[0015] In summary, the technical effects and advantages of the present invention are as follows: The present invention has a reasonable structure. When the control motor is started, the two first bevel gears, the hollow shaft, the fixed plate, the first mounting plate and the mounting shaft will drive the spray head to move in a circle. In this process, the vertical shaft and the self-rotating gear will also move in a circle together. At this time, with the cooperation of the annular gear rail, the self-rotating gear and the vertical shaft will rotate while moving in a circle. The rotation of the vertical shaft will drive the eccentric driving column to rotate in a circle through the second bevel gear, the third bevel gear, the driving shaft and the connecting arm. The circular rotation of the eccentric driving column will drive the spray head to swing back and forth through the connecting swing rod and the mounting shaft, so that the spray head can move in a circle and swing back and forth to spray material droplets in the condensation tower, thereby making the material The material droplets will be dispersed in a larger space and exposed to more cold air, which will speed up the cooling speed. At the same time, it can also ensure that the material droplets are evenly distributed in a wider area to avoid local overcooling or overheating, so as to obtain a more uniform cooling effect. At the same time, through the coordinated setting of spiral blades, the cooling airflow can spirally flow in the condensation tower, increasing the turbulence of the cooling airflow, thereby increasing the gas-liquid contact area and contact time, improving the cooling efficiency, and the gas-liquid exchange in the turbulent state is more sufficient, which is conducive to rapid cooling and solidification. At the same time, the spiral flow of the airflow can ensure that the cooling gas is evenly distributed in the condensation tower, and ultimately ensure that each material droplet can be fully cooled, effectively improving the encapsulation efficiency and the quality of the microcapsules. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure from a first viewing angle of the present invention; Figure 2 is a schematic diagram of a second viewing angle stereoscopic structure of the present invention; Figure 3 It is a partially enlarged cross-sectional structural schematic diagram of a condensing tower in the present invention; Figure 4 It is a partially enlarged structural schematic diagram of the connection between the spray head and the hollow rotating shaft in the present invention; Figure 5 It is a schematic diagram of an enlarged three-dimensional structure of the cooperation between the driving shaft and the vertical shaft in the present invention; Figure 6 It is a partially enlarged cross-sectional structural schematic diagram of the melting homogenizing kettle in the present invention; Figure 7 It is a partially enlarged structural schematic diagram of the connection between the hexagonal rotating shaft, the movable rotating shaft and the horizontal rotating shaft in the present invention; Figure 8 It is a schematic diagram of the front cross-sectional structure of the present invention.

[0018] In the figure: 1. molten homogenizing kettle; 2. condensing tower; 3. spray head; 4. hollow shaft; 5. fixed plate; 6. first mounting plate; 7. mounting shaft; 8. control motor; 9. first bevel gear; 10. second mounting plate; 11. driving shaft; 12. connecting arm; 13. eccentric driving column; 14. connecting rocker; 15. vertical shaft; 16. self-rotating gear; 17. annular gear; 18. second bevel gear; 19. third bevel gear; 20. spiral blade; 21. L-shaped support plate; 22. hexagonal shaft; 23. moving shaft; 24. stirring rod; 25. driving pulley; 26. driving belt; 27. horizontal shaft; 28. eccentric cam; 29. ​​vertical guide rod; 30. L-shaped connecting plate; 31. connecting bearing; 32. resisting shift plate; 33. extrusion spring; 34. fourth bevel gear; 35. extraction pump. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: Reference Figure 1-Figure 8 The preparation equipment of a spray condensation microcapsule shown in the figure comprises a molten homogenizing kettle 1 and a condensing tower 2, a feeding port is fixedly arranged on the top of the molten homogenizing kettle 1, a spray head 3 is arranged in the condensing tower 2, a cold air inlet and an air outlet are fixedly arranged on the side of the condensing tower 2, a mobile spray mechanism for making the spray head 3 move in a circle and swing back and forth at the same time is installed on the condensing tower 2, a mixing mechanism for uniformly stirring the material is installed on the molten homogenizing kettle 1, the mobile spray mechanism is connected to the mixing mechanism, and a feeding assembly for conveying the material to the spray head 3 is also connected to the molten homogenizing kettle 1; The mobile spray mechanism includes a hollow rotating shaft 4 rotatably mounted at the top center of the condensation tower 2, a control assembly for rotating the hollow rotating shaft 4 is mounted on the condensation tower 2, and the control assembly includes a control motor 8 fixedly mounted on the top of the condensation tower 2, and a first bevel gear 9 is fixedly sleeved on the output end of the control motor 8 and the hollow rotating shaft 4, and the two first bevel gears 9 are meshed with each other, and a fixing plate 5 is fixedly sleeved on the hollow rotating shaft 4, and two first mounting plates 6 are fixedly mounted on the bottom of the fixing plate 5, and the sides of the two first mounting plates 6 are each provided with a first rotation hole, and the two first rotation holes are respectively provided on the sides of the two first mounting plates 6. A mounting shaft 7 is rotatably installed in each rotating hole, and the spray head 3 is fixed on the ends of the two mounting shafts 7 that are close to each other. A driving component for rotating the two mounting shafts 7 back and forth is installed on the fixed plate 5. The hollow shaft 4 is connected to the mixing mechanism. When the operation control component rotates the hollow shaft 4, the fixed plate 5, the first mounting plate 6 and the mounting shaft 7 will cause the spray head 3 to move in a circle. At the same time, with the cooperation of the driving component, the mounting shaft 7 will also rotate back and forth, so that the spray head 3 can swing back and forth while moving in a circle.

[0021] By means of the above structure, when the control motor 8 is started, the two first bevel gears 9 will drive the hollow shaft 4 to rotate synchronously, and the rotation of the hollow shaft 4 will drive the fixed plate 5 to rotate in a circle, and then the spray head 3 can be driven to move in a circle through the first mounting plate 6 and the mounting shaft 7. In this process, the operation of the drive component will cause the mounting shaft 7 to rotate back and forth, and the back and forth rotation of the mounting shaft 7 will drive the spray head 3 to swing back and forth, so that the spray head 3 can spray material droplets in the condensation tower 2 while moving in a circle and swinging back and forth, so that the material droplets can be dispersed in a larger space, exposed to more cold air, and the cooling speed can be accelerated. At the same time, it can also ensure that the material droplets are evenly distributed in a wider area to avoid local overcooling or overheating, so as to obtain a more uniform cooling effect, and finally ensure that each material droplet can be fully cooled, effectively improving the embedding efficiency and the quality of the microcapsules.

[0022] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the driving assembly includes two second mounting plates 10 fixedly mounted on the bottom of the fixing plate 5, the sides of the two second mounting plates 10 are provided with second rotating holes, the driving shafts 11 are installed in the two second rotating holes for common rotation, the two ends of the driving shaft 11 are fixedly mounted with connecting arms 12, the sides of the two connecting arms 12 away from each other are fixedly mounted with eccentric driving columns 13, the ends of the two mounting shafts 7 away from each other are fixedly mounted with connecting swing rods 14, the sides of the two connecting swing rods 14 are provided with strip-shaped sliding holes The two eccentric driving columns 13 are respectively adapted to be installed in the two strip-shaped sliding holes. A vertical rotating hole is opened on the top of the fixed plate 5. A vertical rotating shaft 15 is rotatably installed in the vertical rotating hole. A self-rotating gear 16 is fixedly installed on the top of the vertical rotating shaft 15. A plurality of straight rods are evenly fixed on the inner wall of the top of the condensation tower 2. An annular rack 17 is fixedly installed at the bottom ends of the plurality of straight rods. The self-rotating gear 16 is meshed with the annular rack 17. The bottom end of the vertical rotating shaft 15 is connected to a gear transmission unit for driving the driving shaft 11 to rotate synchronously. The advantage of such an arrangement is that when the fixed plate 5 rotates in a circle, it will drive the vertical shaft 15 and the self-rotating gear 16 to move in a circle together. At this time, with the cooperation of the annular rack 17, the self-rotating gear 16 and the vertical shaft 15 can rotate while moving in a circle. The rotation of the vertical shaft 15 will drive the driving shaft 11 to rotate synchronously through the gear transmission unit. The rotation of the driving shaft 11 will drive the eccentric driving column 13 to rotate in a circle through the connecting arm 12. The circular rotation of the eccentric driving column 13 will drive the connecting rocker 14 to swing back and forth, and then the spray head 3 can be driven to swing back and forth through the installation shaft 7, thereby achieving the purpose of making the spray head 3 swing back and forth while moving in a circle.

[0023] like Figure 5 As shown, the gear transmission unit includes a second bevel gear 18 fixedly mounted on the bottom end of the vertical shaft 15, and a third bevel gear 19 is fixedly sleeved on the driving shaft 11, and the second bevel gear 18 is meshed with the third bevel gear 19. The advantage of this arrangement is that when the vertical shaft 15 rotates, the second bevel gear 18 is driven to rotate, and the rotation of the second bevel gear 18 drives the third bevel gear 19 to rotate together, thereby driving the driving shaft 11 to rotate synchronously, playing a transmission role.

[0024] like Figure 3 and Figure 8As shown, spiral blades 20 are fixedly arranged on the inner wall of the condensation tower 2. The advantage of such an arrangement is that, through the arrangement of the spiral blades 20, the cooling airflow can flow in a spiral in the condensation tower 2, and the spiral flow of the airflow can increase the turbulence of the cooling airflow, thereby increasing the gas-liquid contact area and contact time, improving the cooling efficiency, and the gas-liquid exchange in the turbulent state is more sufficient, which is conducive to rapid cooling and solidification. At the same time, the spiral flow of the airflow can ensure that the cooling gas is evenly distributed in the condensation tower 2, further avoiding local overheating or overcooling, and ensuring the quality and consistency of the microcapsules.

[0025] like Figure 1 and Figure 6 As shown, the mixing mechanism includes an L-shaped support plate 21 fixedly mounted on the top of the molten homogenizing kettle 1, a support rotation hole is provided on the top of the L-shaped support plate 21, a hexagonal rotating shaft 22 is rotatably installed in the support rotation hole, and a movable rotating shaft 23 is slidably sleeved on the hexagonal rotating shaft 22. It should be noted that the movable rotating shaft 23 can slide vertically on the hexagonal rotating shaft 22, and the hexagonal rotating shaft 22 and the movable rotating shaft 23 will rotate together without relative rotation; a movable hole is provided on the top of the molten homogenizing kettle 1, the bottom end of the movable rotating shaft 23 passes through the movable hole, and a plurality of stirring rods 24 are evenly fixed on the movable rotating shaft 23, a transmission pulley 25 is fixedly sleeved on the top end of the hexagonal rotating shaft 22 and the hollow rotating shaft 4, and a transmission belt 26 is commonly tensioned on the two transmission pulleys 25. It should be noted that the transmission pulley 25 and the transmission belt 26 can be replaced by a transmission sprocket and a transmission chain; a reciprocating moving component for moving the movable rotating shaft 23 up and down is connected to the hexagonal rotating shaft 22. The advantage of this arrangement is that when the hollow shaft 4 rotates, the hexagonal shaft 22 will be driven to rotate synchronously through the two transmission pulleys 25 and the transmission belt 26. The rotation of the hexagonal shaft 22 will drive the moving shaft 23 and the stirring rod 24 to rotate together, thereby stirring and mixing the materials in the molten homogenizing kettle 1.

[0026] like Figure 6 and Figure 7As shown, the reciprocating moving assembly includes a horizontal rotating shaft 27 rotatably mounted on the inner wall of the side of the L-shaped supporting plate 21, and a fourth bevel gear 34 is fixedly sleeved on the end of the horizontal rotating shaft 27 and the hexagonal rotating shaft 22, and the two fourth bevel gears 34 are meshed with each other. An eccentric cam 28 is fixedly sleeved on the horizontal rotating shaft 27, a vertical guide rod 29 is fixedly mounted on the top of the molten homogenizing kettle 1, and an L-shaped connecting plate 30 is slidably sleeved on the vertical guide rod 29, a connecting bearing 31 is fixedly mounted on the side of the L-shaped connecting plate 30, and the connecting bearing 31 is fixedly sleeved on the moving rotating shaft 23, a contact shift plate 32 is fixedly mounted on the top of the L-shaped connecting plate 30, and the top of the contact shift plate 32 is in contact with the circumferential side of the eccentric cam 28, and an elastic extrusion unit for squeezing the contact shift plate 32 to reset it upward is installed on the molten homogenizing kettle 1. The advantage of such a configuration is that when the hexagonal shaft 22 rotates, the horizontal shaft 27 will also be driven to rotate synchronously through the two fourth bevel gears 34. The rotation of the horizontal shaft 27 will drive the eccentric cam 28 to rotate eccentrically. At this time, with the cooperation of the elastic extrusion unit, the eccentric rotation of the eccentric cam 28 will drive the resistance shift plate 32 to move back and forth up and down, and then the movable shaft 23 can be driven to move back and forth up and down through the L-shaped connecting plate 30 and the connecting bearing 31, so that the stirring rod 24 can stir and mix the materials in the molten homogenizing kettle 1 while rotating and moving back and forth up and down, and the mixing effect is good and the mixing is uniform.

[0027] like Figure 7 As shown, the elastic extrusion unit includes a plurality of extrusion springs 33 uniformly fixedly mounted on the top of the melting homogenizing kettle 1, and the top ends of the plurality of extrusion springs 33 are fixedly mounted on the bottom of the abutting shifting plate 32. The advantage of such a configuration is that, under the elastic force of the extrusion springs 33, the abutting shifting plate 32 can be squeezed and pushed to move upward all the time, so that the abutting shifting plate 32 can always closely contact the eccentric cam 28 to reciprocate up and down, and the stability during operation is good.

[0028] like Figure 2 As shown, the feeding assembly includes a pump 35 fixed on the side of the molten homogenizing kettle 1, the feed port of the pump 35 is fixed on the bottom of the molten homogenizing kettle 1, the discharge port of the pump 35 is rotatably connected to a connecting pipe through a rotary joint, the connecting pipe is fixed in the hollow rotating shaft 4, and the bottom end of the connecting pipe is connected to the spray head 3 through a hose. The advantage of this arrangement is that when the pump 35 is started, the homogenized material in the molten homogenizing kettle 1 can be transported to the spray head 3 through the feed port, the discharge port, the rotary joint, the connecting pipe and the hose for spray condensation treatment.

[0029] The present invention also discloses a method for using a spray condensation microcapsule preparation device, the method comprising: S1, putting the core material and the wall material into the melting homogenizing kettle 1 for heating and melting, starting the control motor 8, so that the stirring rod 24 rotates and reciprocates up and down to stir and mix the materials until the materials are in a homogeneous state; S2, introducing a cold air flow into the condensation tower 2, and starting the pump 35 to spray and condense the homogenate in the molten homogenization kettle 1 through the spray head 3 in the condensation tower 2; S3. During this process, the operation of the control motor 8 will also drive the spray head 3 to move in a circle within the condensation tower 2 and swing back and forth at the same time. In conjunction with the spiral blades 20, the cooling air flow will flow in a spiral within the condensation tower 2, so that the material droplets will be evenly condensed and solidified, and finally quickly condensed into solid particles to form microcapsules.

[0030] Working principle of the present invention: When in use, the core material and the wall material are placed in the molten homogenizing kettle 1 for heating and melting, and the control motor 8 is started. The operation of the control motor 8 will drive the hollow shaft 4 to rotate synchronously through the two first bevel gears 9. The rotation of the hollow shaft 4 will drive the hexagonal shaft 22 to rotate synchronously through the two transmission pulleys 25 and the transmission belt 26. The rotation of the hexagonal shaft 22 will drive the moving shaft 23 and the stirring rod 24 to rotate together. At the same time, the rotation of the hexagonal shaft 22 will also drive the horizontal shaft 27 to rotate synchronously through the two fourth bevel gears 34. The rotation of the horizontal shaft 27 will drive the eccentric cam 28 to rotate eccentrically. At this time, with the cooperation of the extrusion spring 33, the eccentric rotation of the eccentric cam 28 will drive the resistance shift plate 32 to move back and forth up and down, and then The L-shaped connecting plate 30 and the connecting bearing 31 can be used to drive the movable rotating shaft 23 to move up and down reciprocatingly, so that the stirring rod 24 can rotate and reciprocate up and down to stir and mix the materials in the molten homogenizing kettle 1 until the materials are in a homogenous state. At this time, a cold air flow can be introduced into the condensing tower 2, and the pumping pump 35 can be started. The operation of the pumping pump 35 will transport the homogenized materials in the molten homogenizing kettle 1 to the spray head 3 for spray condensation through the feed port, the discharge port, the rotary joint, the connecting pipe and the hose. In this process, the rotation of the hollow rotating shaft 4 will also drive the fixed plate 5 to rotate in a circle, and then the spray head 3 can be driven to move in a circle through the first mounting plate 6 and the mounting rotating shaft 7. At the same time, the fixed plate 5 The circumferential rotation will also drive the vertical shaft 15 and the self-rotating gear 16 to move in a circle. At this time, with the cooperation of the annular gear 17, the self-rotating gear 16 and the vertical shaft 15 can rotate while moving in a circle. The rotation of the vertical shaft 15 will drive the driving shaft 11 to rotate synchronously through the second bevel gear 18 and the third bevel gear 19. The rotation of the driving shaft 11 will drive the eccentric driving column 13 to rotate in a circle through the connecting arm 12. The eccentric driving column 13 will drive the connecting swing rod 14 to swing back and forth, and then the spray head 3 can be driven to swing back and forth through the installation shaft 7, so that the spray head 3 can move in a circle and swing back and forth to spray material droplets, so that the material droplets will be in a larger space. The material droplets are evenly distributed in a wider area to avoid local overcooling or overheating, so as to obtain a more uniform cooling effect. In combination with the setting of the spiral blades 20, the cooling airflow will flow in a spiral in the condensation tower 2. The spiral flow of the airflow can increase the turbulence of the cooling airflow, thereby increasing the gas-liquid contact area and contact time, improving the cooling efficiency, and the gas-liquid exchange in the turbulent state is more sufficient, which is conducive to rapid cooling and solidification. At the same time, the spiral flow of the airflow can ensure that the cooling gas is evenly distributed in the condensation tower 2, and ultimately ensure that each material droplet can be fully cooled, effectively improving the encapsulation efficiency and the quality of the microcapsules.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A preparation device for spray condensation microcapsules, comprising a melt homogenization kettle (1) and a condensation tower (2), wherein a spray head (3) is arranged in the condensation tower (2), characterized in that: The condensing tower (2) is provided with a moving spray mechanism for causing the spray head (3) to move in a circular motion and simultaneously to swing back and forth; the molten homogenizing kettle (1) is provided with a mixing mechanism for uniformly stirring the material; the moving spray mechanism is connected to the mixing mechanism; the molten homogenizing kettle (1) is also connected with a feeding assembly for conveying the material to the spray head (3); The mobile spray mechanism comprises a hollow rotating shaft (4) rotatably mounted at the top center position of the condensation tower (2); a control component for causing the hollow rotating shaft (4) to rotate is mounted on the condensation tower (2); a fixing plate (5) is fixedly sleeved on the hollow rotating shaft (4); two first mounting plates (6) are fixedly mounted on the bottom of the fixing plate (5); first rotating holes are provided on the sides of the two first mounting plates (6); mounting rotating shafts (7) are rotatably mounted in the two first rotating holes; the spray head (3) is fixedly mounted on the two mounting plates (6) At the ends of the rotating shafts (7) close to each other, a driving assembly for causing the two mounting rotating shafts (7) to rotate back and forth is installed on the fixing plate (5). The hollow rotating shaft (4) is connected to the mixing mechanism. When the operation control assembly causes the hollow rotating shaft (4) to rotate, the spray head (3) is moved in a circle through the fixing plate (5), the first mounting plate (6) and the mounting rotating shaft (7). At the same time, with the cooperation of the driving assembly, the mounting rotating shaft (7) is also caused to rotate back and forth, thereby causing the spray head (3) to swing back and forth while moving in a circle.

2. The preparation device of the spray condensation microcapsule according to claim 1, characterized in that: The driving assembly comprises two second mounting plates (10) fixedly mounted on the bottom of the fixing plate (5), the sides of the two second mounting plates (10) are each provided with a second rotating hole, a driving shaft (11) is mounted in the two second rotating holes for common rotation, connecting arms (12) are fixedly mounted at both ends of the driving shaft (11), eccentric driving columns (13) are fixedly mounted on the sides of the two connecting arms (12) away from each other, connecting swing rods (14) are fixedly mounted on the ends of the two mounting shafts (7) away from each other, strip-shaped sliding holes are opened on the sides of the two connecting swing rods (14), and the two The eccentric driving column (13) is respectively adapted to be installed in the two strip-shaped sliding holes, and a vertical rotating hole is opened at the top of the fixing plate (5). A vertical rotating shaft (15) is rotatably installed in the vertical rotating hole, and a self-rotating gear (16) is fixedly installed at the top of the vertical rotating shaft (15). A plurality of straight rods are evenly fixed on the inner wall of the top of the condensation tower (2), and an annular gear rail (17) is fixedly installed at the bottom ends of the plurality of straight rods. The self-rotating gear (16) is meshed with the annular gear rail (17), and the bottom end of the vertical rotating shaft (15) is connected to a gear transmission unit for driving the driving rotating shaft (11) to rotate synchronously.

3. The preparation device of the spray condensation microcapsule according to claim 2, characterized in that: The gear transmission unit comprises a second bevel gear (18) fixedly mounted on the bottom end of the vertical rotating shaft (15); a third bevel gear (19) is fixedly sleeved on the driving rotating shaft (11); the second bevel gear (18) is meshed with the third bevel gear (19).

4. The preparation device of the spray condensation microcapsule according to claim 1, characterized in that: The control assembly comprises a control motor (8) fixedly mounted on the top of the condensation tower (2), a first bevel gear (9) being fixedly sleeved on the output end of the control motor (8) and the hollow rotating shaft (4), and two first bevel gears (9) being meshed with each other.

5. The preparation device of the spray condensation microcapsule according to claim 1, characterized in that: The inner wall of the condensation tower (2) is fixedly provided with spiral blades (20).

6. The preparation device of the spray condensation microcapsule according to claim 1, characterized in that: The mixing mechanism comprises an L-shaped support plate (21) fixedly mounted on the top of the molten homogenizing kettle (1), a support rotation hole being provided on the top of the L-shaped support plate (21), a hexagonal rotating shaft (22) being rotatably mounted in the support rotation hole, a movable rotating shaft (23) being slidably sleeved on the hexagonal rotating shaft (22), a movable hole being provided on the top of the molten homogenizing kettle (1), the bottom end of the movable rotating shaft (23) passing through the movable hole, a plurality of stirring rods (24) being evenly fixedly mounted on the movable rotating shaft (23), a transmission pulley (25) being fixedly sleeved on the top end of the hexagonal rotating shaft (22) and the hollow rotating shaft (4), a transmission belt (26) being tensionedly sleeved on the two transmission pulleys (25), and a reciprocating moving component for moving the movable rotating shaft (23) up and down being connected to the hexagonal rotating shaft (22).

7. The preparation device of the spray condensation microcapsule according to claim 6, characterized in that: The reciprocating assembly comprises a horizontal rotating shaft (27) rotatably mounted on the inner wall of the side of the L-shaped support plate (21), a fourth bevel gear (34) being fixedly sleeved on the end of the horizontal rotating shaft (27) and the hexagonal rotating shaft (22), the two fourth bevel gears (34) being meshed with each other, an eccentric cam (28) being fixedly sleeved on the horizontal rotating shaft (27), a vertical guide rod (29) being fixedly mounted on the top of the molten homogenizing kettle (1), and a sliding sleeve on the vertical guide rod (29) An L-shaped connecting plate (30) is connected, a connecting bearing (31) is fixedly mounted on the side of the L-shaped connecting plate (30), the connecting bearing (31) is fixedly sleeved on the movable rotating shaft (23), a resisting plate (32) is fixedly mounted on the top of the L-shaped connecting plate (30), the top of the resisting plate (32) is in contact with the circumferential side of the eccentric cam (28), and an elastic extrusion unit for extruding the resisting plate (32) to reset it upward is installed on the molten homogenizing kettle (1).

8. The preparation device of the spray condensation microcapsule according to claim 7, characterized in that: The elastic extrusion unit comprises a plurality of extrusion springs (33) uniformly and fixedly mounted on the top of the molten homogenizing kettle (1), and the top ends of the plurality of extrusion springs (33) are all fixedly mounted on the bottom of the abutting shift plate (32).

9. The preparation device of the spray condensation microcapsule according to claim 1, characterized in that: The feeding assembly comprises a pump (35) fixedly mounted on the side of the molten homogenizing kettle (1); a feed port of the pump (35) is fixedly mounted on the bottom of the molten homogenizing kettle (1); a discharge port of the pump (35) is rotatably connected to a connecting pipe via a rotary joint; the connecting pipe is fixedly mounted in the hollow rotating shaft (4); and a bottom end of the connecting pipe is connected to the spray head (3) via a hose.

10. A method for using a spray condensation microcapsule preparation device according to any one of claims 1 to 9, characterized in that: The method includes: S1, placing the core material and the wall material into a melting and homogenizing kettle (1) for heating and melting, starting the control motor (8), so that the stirring rod (24) rotates and reciprocates up and down to stir and mix the materials until the materials are in a homogenous state; S2, introducing a cold air flow into the condensation tower (2), and starting the pumping pump (35) to spray and condense the homogenized material in the molten homogenization kettle (1) through the spray head (3) in the condensation tower (2); S3. During this process, the operation of the control motor (8) will also drive the spray head (3) to move in a circular motion within the condensation tower (2) and to swing back and forth at the same time, and cooperate with the spiral blades (20) to make the cooling air flow flow in a spiral in the condensation tower (2), thereby making the material droplets be uniformly condensed and solidified, and finally quickly condensed into solid particles to form microcapsules.

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