Microcapsule curing device aiming at microfluidic technology

Abstract

The invention belongs to the technical field of microcapsule curing equipment, and discloses a microcapsule curing device aiming at a microfluidic technology, the microcapsule curing device comprises a supporting device, a microcapsule production channel, a condensation curing device, a secondary curing device and a washing and collecting device, the microcapsule production channel and the condensation curing device are fixedly installed on the supporting device, and the secondary curing device is fixedly installed on the supporting device. The condensation curing device is connected with the secondary curing device and is used for cooling the microcapsules which are initially coated into balls, and curing liquid is introduced into the microcapsules to complete primary curing of the outer walls of the microcapsules; the secondary curing device is used for collecting the microcapsules subjected to primary curing and further curing the microcapsules; and the washing and collecting device is used for washing the curing liquid on the surfaces of the microcapsules and collecting the cured microcapsules. According to the condensation curing device, cooling hardening and fixing forming of the microcapsules prepared by the micro-fluidic chip are achieved at the same time. Monodisperse microcapsule particles can be obtained through curing, and the method has high practicability.

Description

Technical Field

[0001] The invention belongs to the technical field of microcapsule curing equipment, and in particular relates to a microcapsule curing device for microfluidic technology. Background Art

[0002] Microcapsule curing device refers to a device that promotes the hardening of the outer wall material of the microcapsule after the microcapsule is coated into a ball. Microcapsule technology realizes the encapsulation of active ingredients (such as drugs, spices, fuels, fire extinguishing agents, etc.) inside tiny capsules, and the capsules are surrounded by an outer wall composed of high molecular materials or polymers. After the microcapsule core material is coated with the wall material, the wall material is solidified by physical or chemical methods to fix the microcapsule into shape, which is particularly important for ensuring the stability and integrity of the microcapsule structure and performance. Microcapsules are often used to control the release rate of active ingredients. If they are broken or deformed during the curing process, premature release will occur. The hardness, strength and stability of the microcapsule are all affected by the integrity of the appearance. Therefore, ensuring the morphological integrity of the microcapsule is very important for maintaining the performance and stability of the microcapsule.

[0003] There are many methods and technologies for microcapsule curing, but there is a lack of mature microcapsule curing devices. The current microcapsule curing technologies include thermal curing, light curing, chemical curing and electromagnetic curing. These curing technologies have the following disadvantages:

[0004] 1. It is only for curing a certain type of microcapsules, and it is difficult to achieve universal curing of microcapsules with different properties;

[0005] 2. The curing liquid cannot be effectively separated during the curing process, and the subsequent washing, drying and collection processes are ignored. Summary of the invention

[0006] The purpose of the present invention is to provide a microcapsule curing device for microfluidic technology to solve the above technical problems.

[0007] In order to solve the above technical problems, a specific technical solution of a microcapsule curing device for microfluidic technology of the present invention is as follows:

[0008] A microcapsule curing device for microfluidic technology comprises a supporting device, a microcapsule production channel, a condensation curing device, a curing washing device and a washing collection device. The microcapsule production channel and the condensation curing device are fixedly mounted on the supporting device. The microcapsule production channel is used to receive microcapsules flowing out of an outlet pipe of a microfluidic chip and pass the microcapsules into the condensation curing device. The condensation curing device is connected to the curing washing device. The condensation curing device is used to cool the microcapsules initially coated into balls, pass curing liquid into the balls, and complete the primary curing of the outer wall of the microcapsules. The curing washing device is used to collect the initially cured microcapsules and further cure the microcapsules. The washing collection device is used to wash the curing liquid on the surface of the microcapsules and collect the cured microcapsules.

[0009] Furthermore, the supporting device includes a microcapsule production channel supporting platform, a condensation and solidification device inlet pipe supporting seat and a condensation and solidification device outlet pipe supporting seat. The microcapsule production channel supporting platform adopts a cubic structure, and the top and bottom surfaces are closed steel plate structures, which are connected by four supporting columns. The top surface close to the condensation and solidification device side is designed to be a downward inclined flat plate structure. The microcapsule production channel supporting platform is used to place the microcapsule production channel, and the condensation and solidification device inlet pipe supporting seat and the condensation and solidification device outlet pipe supporting seat are tripod structures.

[0010] Furthermore, the microcapsule production channel includes a rectangular porous panel and a plurality of microcapsule outlet pipes with a curved structure. The porous panel is placed on the upper surface of the microcapsule production channel support platform and is used to fix the connection to the outlet pipe of the microfluidic chip. A plurality of independent microcapsule inlet channels are arranged inside the porous panel. The plurality of microcapsule outlet pipes are respectively connected to the microcapsule inlet channels. The microcapsule inlet channels are connected to the outlet pipe of the microfluidic chip to receive microcapsules. The microcapsule outlet pipe is non-contactly aligned with the condensation and solidification device to pass the microcapsules to the condensation and solidification device. The microcapsule production channel as a whole adopts a hollow glass structure.

[0011] Furthermore, the condensation and solidification device includes an inlet pipe of the condensation and solidification device, an outlet pipe of the condensation and solidification device, a condensation and solidification mesh disk, a constant temperature and humidity tank and a microfluidic injection pump. The condensation and solidification mesh disk is fixedly overlapped with the end faces of the inlet pipe and the outlet pipe of the condensation and solidification device. The top surface of the inlet pipe support seat of the condensation and solidification device is fixedly connected to the bottom surface of the inlet pipe of the condensation and solidification device. The outlet pipe of the condensation and solidification device is connected to the curing washing device. The constant temperature and humidity tank is located on one side of the entire condensation and solidification device, and is respectively connected to the inlet pipe and the outlet pipe of the condensation and solidification device through pipelines to provide circulating condensed water for the condensation and solidification device. The microfluidic injection pump is placed on the upper surface of the microcapsule production channel support platform to provide curing liquid for the condensation and solidification device.

[0012] Furthermore, the inlet pipe of the condensation and solidification device includes an inlet pipe body, a condensation water inlet pipe and a solidification liquid injection pipe. One end of the inlet pipe body is sealed and the other end is connected to the condensation and solidification mesh disk. The condensation water inlet pipe is connected in the middle of one side of the inlet pipe body and passes through the inlet pipe body. The condensation water inlet pipe is used to input the condensation water in the constant temperature and humidity tank into the condensation and solidification device to make the microcapsules begin to solidify. The starting end of the inlet pipe body has a solidification liquid channel. The solidification liquid injection pipe is connected to the starting end of one side of the inlet pipe body and is connected to the solidification liquid channel. The microfluidic injection pump is placed on the upper surface of the microcapsule production channel support platform and is connected to the solidification liquid injection pipe for passing the solidification liquid into the solidification liquid injection pipe. The solidification liquid injection pipe is used to pass the solidification liquid into the solidification liquid channel to provide solidification liquid for the condensation and solidification device. The upper surface of the inlet pipe body is provided with a plurality of independent inlet pipe grooves, and the inlet pipe grooves are connected to the solidification liquid channel to receive the microcapsules from the microcapsule outlet pipe and the solidification liquid in the solidification liquid channel to make the microcapsules begin to solidify.

[0013] Furthermore, the condensation and solidification mesh disk is a spring-shaped, hollow structure with a groove on the upper surface, including a condensation water channel, the upper starting end and the lower end are respectively overlapped and connected with the inlet pipe and the outlet pipe of the condensation and solidification device, the condensation water channel is hollow, and the upper surface has a condensation and solidification mesh disk groove, the condensation water channel is connected with the inlet pipe and the outlet pipe of the condensation and solidification device, ensuring that the condensed water circulates in the condensation and solidification mesh disk, and the condensation and solidification mesh disk groove includes multiple independent grooves, which respectively receive the microcapsules from the inlet pipe groove.

[0014] Furthermore, the outlet pipe of the condensation and solidification device includes an outlet pipe body and a condensed water outlet pipe, one end of the outlet pipe body is connected to the condensation and solidification mesh disk, and the other end has an inclined microcapsule outlet plate, the condensed water outlet pipe is connected to the middle of the outer wall of one side of the outlet pipe body, and the condensed water in the condensation and solidification device is returned to the constant temperature and humidity tank, and the upper surface of the outlet pipe body has a plurality of independent outlet pipe grooves, and the outlet pipe grooves are used to receive microcapsules from the condensation and solidification mesh disk grooves.

[0015] Furthermore, the solidification washing device includes a secondary solidification device and a washing device, the secondary solidification device includes a square plug, a solidification liquid outlet pipe, and a solidification filter, the square plug is placed in the middle of the bottom of the secondary solidification device, the solidification liquid outlet pipe is arranged on the top of the side of the secondary solidification device, the solidification filter is placed inside the solidification liquid outlet pipe, and the washing device includes a water pipe outlet, a turbine fan, and a water pipe inlet. Water flows into the washing device through the water pipe inlet. Driven by the turbine fan, the water flow rotates, and the waste water flows into the washing collection device through the water pipe outlet.

[0016] Furthermore, the washing collection device includes a washing collection container, a washing magnetic agitator, and a waste liquid collection tank. The washing collection container is placed on the upper surface of the washing magnetic agitator, and the waste liquid collection tank is placed on one side of the washing magnetic agitator. The washing magnetic agitator includes a washing device speed button, a washing device temperature button, and a washing device display screen, and the function is the same as the solidification magnetic agitator. The washing collection container includes a deionized water inlet pipe, a deionized water outlet pipe, and a washing filter.

[0017] Furthermore, the deionized water inlet pipe is connected to the left outer wall of the washing and collecting container for introducing pure deionized water, the deionized water outlet pipe is connected to the right outer wall of the washing and collecting container for discharging the waste liquid after washing into the waste liquid collection tank, the washing filter is arranged in the middle position inside the washing and collecting container and is detachable, the washing magnetic agitator is turned on, and deionized water is introduced through the deionized water inlet pipe to wash the residual solidifying liquid on the surface of the microcapsules after secondary curing. After washing is completed, the microcapsules are separated from the washing waste liquid through the washing filter, the microcapsules are placed on the surface of the washing filter, and they are dried and collected by setting an appropriate temperature, and the washing waste liquid is discharged into the waste liquid collection tank.

[0018] The microcapsule curing device for microfluidic technology of the present invention has the following advantages:

[0019] The condensation and curing device in the present application realizes the cooling, hardening and fixing of the microcapsules prepared by the microfluidic chip at the same time. The stability of the microcapsules produced by the microfluidic method is improved. The multi-layer annular condensation and curing mesh disk is designed with multiple grooves, which can meet the simultaneous curing of multiple groups of microcapsules. The extra-long channel prolongs the condensation and curing time, and the gentle slope prevents the microcapsules from sticking together. It can solidify to obtain monodisperse microcapsule particles, which has strong practicality.

[0020] The present application designs a secondary curing device to avoid the defects of the primary curing of microcapsules. The curing liquid and microcapsule particles are separated during the curing process, thereby ensuring the structural strength and stability of the microcapsule outer wall material.

[0021] The washing and collecting device of the present application achieves sufficient washing of the microcapsules through the dual effects of flushing and stirring, and separates the deionized water from the microcapsule particles during the washing process, and directly collects the microcapsules in the washing and collecting device.

[0022] The present application not only realizes the device-based microcapsule curing process, greatly simplifying the cumbersome microcapsule curing process, but also the systematic curing method greatly reduces the leakage rate of the microcapsule core material, and the curing efficiency and quality are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a general side view of a microcapsule curing device for microfluidic technology in an embodiment of the present application;

[0024] Figure 2 It is a microcapsule production channel and a partial enlarged view thereof in the embodiment of the present application;

[0025] Figure 3 It is a condensation and solidification device in the embodiment of the present application and a partial enlarged diagram thereof;

[0026] Figure 4 It is a curing and washing device in an embodiment of the present application and a partial enlarged view thereof;

[0027] Figure 5 This is a schematic diagram of the structure of the washing and collecting device in the embodiment of the present application;

[0028] Explanation of the markings in the figure: 1. Support device; 11. Microcapsule production channel support platform; 12. Condensation and solidification device inlet pipe support seat; 2. Microcapsule production channel; 21. Porous panel; 22. Microcapsule outlet pipe; 211. Microcapsule inlet channel; 3. Condensation and solidification device; 31. Condensation and solidification device inlet pipe; 311. Inlet pipe body; 3111. Solidification liquid channel; 3112. Inlet pipe groove; 312. Condensate inlet pipe; 313. Solidification liquid injection pipe; 32. Condensate device outlet pipe; 321. Outlet pipe body; 3211. Microcapsule outlet plate; 3212. Outlet pipe groove; 322. Condensate outlet Inlet pipe; 33, condensation and curing mesh disk; 331, condensation water channel; 3311, condensation and curing mesh disk groove; 34, constant temperature and humidity tank; 35, microfluidic injection pump; 4, curing and washing device; 41, secondary curing device; 411, secondary curing device including square plug; 412, curing liquid outlet pipe; 413, curing filter; 42, washing device; 421, water pipe outlet; 422, turbine fan; 423, water pipe inlet; 5, washing collection device; 51, washing collection container; 511, deionized water inlet pipe; 512, deionized water outlet pipe; 513, washing filter; 52, washing magnetic agitator; 53, waste liquid collection tank. DETAILED DESCRIPTION

[0029] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a microcapsule curing device for microfluidic technology of the present invention in conjunction with the accompanying drawings.

[0030] like Figure 1 As shown, a microcapsule curing device for microfluidic technology of the present invention includes a supporting device 1, a microcapsule production channel 2, a condensation curing device 3, a curing washing device 4 and a washing collection device 5.

[0031] A support device 1 is used to support the microcapsule production channel 2 and the condensation and solidification device 3, and provide a support structure for the condensation and solidification of the microcapsules;

[0032] A microcapsule production channel 2 is used to receive the microcapsules flowing out of the outlet pipe of the microfluidic chip and pass the microcapsules into the condensation and solidification device 3;

[0033] The condensation and solidification device 3 is used to cool the microcapsules initially coated into balls, and to introduce a solidification liquid therein to complete the primary solidification of the outer wall of the microcapsules;

[0034] A curing and washing device 4, used to collect the initially cured microcapsules and further cure the microcapsules;

[0035] The washing and collecting device 5 is used to wash the solidified liquid on the surface of the microcapsules and collect the solidified microcapsules.

[0036] The support device 1 includes a microcapsule production channel support platform 11 and a condensation and solidification device inlet pipe support seat 12. The microcapsule production channel support platform 11 preferably adopts a cubic structure, and the top and bottom surfaces are closed steel plate structures connected by four support columns. The top surface close to the condensation and solidification device 3 is designed as a flat plate structure tilted downward by 45°, which is convenient for the microcapsule production channel 2 to be aligned with the condensation and solidification device inlet pipe 31 of the condensation and solidification device 3. The microcapsule production channel support platform 11 is used to place the microcapsule production channel. The condensation and solidification device inlet pipe support seat 12 is a tripod structure.

[0037] See also Figure 2 , Figure 2 The microcapsule production channel 2 of a microcapsule curing device in the embodiment of the present application includes a rectangular porous panel 21 and 9 microcapsule outlet pipes 22 with a curved structure. The porous panel 21 is placed on the upper surface of the microcapsule production channel support platform 11, and is used to fix the outlet pipe of the microfluidic chip. Nine independent microcapsule inlet channels 211 are arranged inside the porous panel 21, and the nine microcapsule outlet pipes 22 are respectively connected to the microcapsule inlet channels 211. The microcapsule inlet channels 211 are connected to the outlet pipe of the microfluidic chip to receive microcapsules. The microcapsule outlet pipe 22 is non-contactly aligned with the condensation curing device 3 to pass the microcapsules to the condensation curing device 3. The microcapsule production channel 2 adopts a hollow glass structure as a whole, which is convenient for observing the flow state of the microcapsules in the pipe.

[0038] See also Figure 3 , Figure 3This is a structural exploded diagram of a condensation and curing device 3 in an embodiment of the present application. The condensation and curing device 3 is made of glass material as a whole, which is convenient for observing the flow state of microcapsules in the condensation and curing device 3. The condensation and curing device 3 includes a condensation and curing shell (30), a condensation and curing device inlet pipe 31, a condensation and curing device outlet pipe 32, a condensation and curing net disk 33, a constant temperature and humidity tank 34 and a microfluidic injection pump 35. The condensation and curing net disk 33 coincides with the end faces of the condensation and curing device inlet pipe 31 and the condensation and curing device outlet pipe 32, and is connected in a fixed connection manner. The condensation and curing shell (30) wraps the condensation and curing net disk (36) in the middle to separate it from the external environment and improve the efficiency of condensation and curing. The top surface of the condensation and curing device inlet pipe support seat 12 is fixedly connected to the bottom surface of the condensation and curing device inlet pipe 31. The condensation and curing device outlet pipe 32 is connected to the curing washing device 4. The constant temperature and humidity tank 34 is located on one side of the entire condensation and curing device 3, and is connected to the condensation and curing device inlet pipe 31 and the condensation and curing device outlet pipe 32 through pipelines, respectively, to provide circulating condensed water for the condensation and curing device. The microfluidic injection pump 35 is placed on the upper surface of the microcapsule production channel support platform 11 to provide solidifying liquid for the condensation solidification device 3 .

[0039] The inlet pipe 31 of the condensation and solidification device includes an inlet pipe body 311, a condensation water inlet pipe 312 and a solidification liquid injection pipe 313. One end of the inlet pipe body 311 is sealed, and the other end is connected to the condensation and solidification mesh disk 33. The condensation water inlet pipe 312 is connected to the middle of one side of the inlet pipe body 311 and passes through the inlet pipe body 311. The condensation water inlet pipe 312 is used to input the condensation water in the constant temperature and humidity tank 34 into the condensation and solidification device 3 to make the microcapsules begin to solidify. The starting end of the inlet pipe body 311 has a solidification liquid channel 3111. The solidification liquid injection pipe 313 is connected to the starting end of one side of the inlet pipe body 311 and is connected to the solidification liquid channel 3111. The microfluidic injection pump 35 is placed on the upper surface of the microcapsule production channel support platform 11 and is connected to the solidification liquid injection pipe 313. It is used to pass the solidification liquid into the solidification liquid injection pipe 313. The solidification liquid injection pipe 313 is used to pass the solidification liquid into the solidification liquid channel 3111 to provide solidification liquid for the condensation and solidification device 3. The upper surface of the inlet tube body 311 is provided with 9 independent inlet tube grooves 3112, which are connected with the solidifying liquid channel 3111 and are used to receive microcapsules from the microcapsule outlet pipe 22 and the solidifying liquid in the solidifying liquid channel 3111 to start solidifying the microcapsules.

[0040] The condensation and curing mesh disk 33 is a spring-shaped, hollow structure with grooves on the upper surface, including a condensation water channel 331, the upper starting end and the lower end are respectively connected to the inlet pipe 31 of the condensation and curing device and the outlet pipe 32 of the condensation and curing device. The condensation water channel 331 is hollow, and the upper surface has a condensation and curing mesh disk groove 3311. The condensation water channel 331 is connected to the inlet pipe 31 of the condensation and curing device and the outlet pipe 32 of the condensation and curing device, ensuring that the condensed water circulates in the condensation and curing mesh disk 33. The condensation and curing mesh disk groove 3311 contains 9 independent grooves, which respectively receive microcapsules from the inlet pipe groove 3112. The hollow and surface groove design of the condensation and curing mesh disk 33 realizes the dual role of condensation and curing.

[0041] The outlet pipe 32 of the condensation and curing device includes an outlet pipe body 321 and a condensed water outlet pipe 322. One end of the outlet pipe body 321 is connected to the condensation and curing mesh disk 33, and the other end has an inclined microcapsule outlet plate 3211. The condensed water outlet pipe 322 is connected to the middle of the outer wall of one side of the outlet pipe body 321, and the condensed water in the condensation and curing device 3 is passed back to the constant temperature and humidity tank 34. The upper surface of the outlet pipe body 321 has 9 independent outlet pipe grooves 3212, and the outlet pipe grooves 3212 are used to receive microcapsules from the condensation and curing mesh disk grooves 3311. The inclination angle design of the microcapsule outlet plate 3211 allows the microcapsules to slowly slide down to the curing and washing device 4, reducing the breakage rate of the microcapsules.

[0042] See also Figure 4 , Figure 4 It is a solidification washing device 4 in the embodiment of the present application. The solidification washing device 4 includes a secondary solidification device 41 and a washing device 42. The secondary solidification device includes a square plug 411, a solidification liquid outlet pipe 412, and a solidification filter 413. The square plug 411 is placed in the middle of the bottom of the secondary solidification device. When the mixture of microcapsules and solidification liquid accumulates to a height exceeding the square plug, the microcapsules and the residual solidification liquid flow over the square plug 411 into the washing device below. The solidification liquid outlet pipe 412 is arranged at the top of the side of the secondary solidification device, and the solidification filter 413 is placed inside the solidification liquid outlet pipe 412 to separate the solidification liquid from the microcapsules, so that the microcapsules are retained in the secondary solidification device, and the solidification liquid circulates back to the microfluidic injection pump 35 through the solidification liquid outlet pipe 412 to achieve repeated use.

[0043] The washing device 42 includes a water pipe outlet 421, a turbine fan 422, and a water pipe inlet 423. Water flows into the washing device through the water pipe inlet 423. Driven by the turbine fan 422, the water flows in rotation, driving the microcapsules from the secondary curing device, and preliminarily washing away the residual curing liquid and other impurities on the surface of the microcapsules. The washed waste water flows into the washing collection device 5 through the water pipe outlet 423.

[0044] See also Figure 5 , Figure 5The washing collection device 5 in the embodiment of the present application comprises a washing collection container 51, a washing magnetic stirrer 52, and a waste liquid collection tank 53. The washing collection container 51 is placed on the upper surface of the washing magnetic stirrer 52, and the waste liquid collection tank 53 is placed on one side of the washing magnetic stirrer 52.

[0045] The washing magnetic stirrer 52 includes a washing device speed button 521, a washing device temperature button 522, and a washing device display screen 523. The washing device display screen 523 is used to display the real-time temperature and speed of the washing magnetic stirrer 52. The washing device temperature button 522 is used to adjust the stirring temperature, and the washing device speed button 521 is used to adjust the stirring speed, thereby ensuring that the microcapsules can be washed again at a fixed temperature and stirring speed.

[0046] The washing collection container 51 mainly includes a deionized water inlet pipe 511, a deionized water outlet pipe 512 and a washing filter 513. The deionized water inlet pipe 511 is connected to the left outer wall of the washing collection container 51 for introducing pure deionized water. The deionized water outlet pipe 512 is connected to the right outer wall of the washing collection container 51 to discharge the washed waste liquid into the waste liquid collection tank 53. The washing filter 513 is arranged in the middle position inside the washing collection container 51 and is detachable. The washing magnetic stirrer 52 is turned on, and deionized water is introduced through the deionized water inlet pipe 511 to wash the residual solidified liquid on the surface of the microcapsules after solidification. After washing is completed, the microcapsules are separated from the washing waste liquid through the washing filter 513. The microcapsules are placed on the surface of the washing filter 513 and can be dried and collected by setting an appropriate temperature. The washing waste liquid is discharged into the waste liquid collection tank 53.

[0047] In the embodiment of the present application, the shell material of the microcapsule is a gelatin-carboxymethyl cellulose mixed material, the inner core material is perfluorohexanone, and the curing liquid is a mixture of n-octanol and span80.

[0048] Embodiment 1: According to the number of microfluidic chips, the outlet pipe of the microfluidic chip is connected to the microcapsule inlet channel 211 in the porous panel 21, and the microcapsule particles initially coated into balls and their continuous phase solution are passed into the microcapsule inlet channel 211. After the microcapsules flow out of the microcapsule inlet channel 211, they enter the microcapsule outlet pipe 22 and slide into the corresponding inlet pipe groove 3112 through the curved pipe outlet. The solidifying liquid is injected into the inlet pipe groove 3112 through the microfluidic injection pump 35 on the microcapsule production channel support platform 11, and condensed water is passed into the inlet pipe body 311 below the inlet pipe groove 3112. The microcapsule particles are fully in contact with the solidifying liquid in the inlet pipe groove 3112 and are quickly shaped under the action of the condensed water. The radius of the condensation and solidification mesh disk 33 is 25 cm, with 20 circles of annular disks, and the slope is gentle so that the microcapsules will not adhere to the instrument, and the condensation and solidification time of the microcapsules is also guaranteed. The microcapsules slide from the microcapsule outlet plate 3211 of the outlet pipe 32 of the condensation and curing device to the bottom of the secondary curing device. The microcapsules are left to stand for 2 hours until the curing liquid is fully immersed in the shell material and reaches dryness. When the mixture of microcapsules and curing liquid continues to accumulate, when it accumulates to the height of the curing liquid outlet pipe, the curing liquid circulates through the curing liquid outlet pipe to the microflow injection pump to achieve the recycling of the curing liquid. The microcapsules and the curing liquid are separated by the curing filter, and the microcapsules are retained in the secondary curing device. When the microcapsules and the residual curing liquid mixture accumulate to the height of the square plug, the mixture passes over the square plug and enters the washing device below. Turn on the turbine fan at the bottom of the washing device, and continuously pass the water flow into the washing device through the water pipe inlet. Driven by the turbine fan, the water flow rotates and continuously cleans the microcapsules, removes the curing liquid and other impurities on the surface of the microcapsules, and the cleaned microcapsules are passed to the washing collection device through the water pipe outlet together with the waste liquid. Deionized water is continuously passed into the washing collection container, the washing magnetic stirrer is turned on, and the appropriate temperature and speed are set. The microcapsules are further washed under the drive of deionized water. The waste liquid after washing penetrates into the bottom of the washing collection container through the washing filter and passes to the waste liquid collection tank through the deionized water outlet pipe. The washing time is maintained for 1 hour. After washing, it is left to dry for 2 hours, and the microcapsule particles are collected on the washing collection filter.

[0049] Embodiment 2: Embodiment 2 of the present application is based on the improvement of Embodiment 1. Specifically:

[0050] The microcapsule support device is designed as a highly adjustable structure. The corresponding microcapsule outlet pipe and the number of grooves of each component are set according to the number of microfluidic chips to meet the simultaneous condensation and curing of a large number of microcapsules and improve the curing efficiency. According to actual needs, the number of turns of the condensation and curing mesh disk and the slope of the annular disk are increased or decreased to control the curing time. An ultraviolet lamp is set inside the condensation and curing mesh disk to stabilize the microcapsule particles under the irradiation of ultraviolet light. An air dryer is arranged above the washing and collecting device. After washing, the air dryer is turned on to fully dry the deionized water on the surface of the washed microcapsule particles.

[0051] The present invention provides a device capable of efficiently curing microcapsules, which keeps the microcapsules non-sticky and with good appearance integrity during initial curing, thereby stabilizing the microcapsule structure, effectively coating the core material, and allowing the obtained microcapsules to be stably stored for a long time and adapt to different scene requirements, and allowing the curing liquid to be recycled.

[0052] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A microcapsule curing device for microfluidic technology, comprising a supporting device (1), a microcapsule production channel (2), a condensation curing device (3), a curing washing device (4) and a washing collection device (5), characterized in that: The microcapsule production channel (2) and the condensation and solidification device (3) are fixedly mounted on the support device (1); the microcapsule production channel (2) is used to receive the microcapsules flowing out of the outlet pipe of the microfluidic chip and pass the microcapsules into the condensation and solidification device (3); the condensation and solidification device (3) is connected to the solidification and washing device (4); the condensation and solidification device (3) is used to cool the microcapsules initially coated into balls, pass the solidification liquid into the microcapsules, and complete the initial solidification of the outer wall of the microcapsules; The solidification and washing device (4) is used to collect the initially solidified microcapsules and further solidify the microcapsules; The washing and collecting device (5) is used to wash the solidified liquid on the surface of the microcapsules and collect the solidified microcapsules.

2. The microcapsule curing device for microfluidic technology according to claim 1, characterized in that: The support device (1) comprises a microcapsule production channel support platform (11) and a condensation and solidification device inlet pipe support seat (12); the microcapsule production channel support platform (11) adopts a cubic structure, the top and bottom surfaces are closed steel plate structures, connected by four support columns, the top surface close to the condensation and solidification device (3) is designed as a flat plate structure inclined downward by 45 degrees, the microcapsule production channel support platform (11) is used to place the microcapsule production channel, and the condensation and solidification device inlet pipe support seat (12) is a tripod structure.

3. The microcapsule curing device for microfluidic technology according to claim 2, characterized in that: The microcapsule production channel (2) comprises a rectangular porous panel (21) and a plurality of microcapsule outlet pipes (22) having a curved structure. The porous panel (21) is placed on the upper surface of the microcapsule production channel support platform (11) and is used to be fixedly connected to the outlet pipe of the microfluidic chip. A plurality of independent microcapsule inlet channels (211) are arranged inside the porous panel (21). The plurality of microcapsule outlet pipes (22) are respectively connected to the microcapsule inlet channels (211). The microcapsule inlet channels (211) are connected to the outlet pipe of the microfluidic chip and are used to receive microcapsules. The microcapsule outlet pipe (22) is non-contactly aligned with the condensation and solidification device (3) to pass the microcapsules to the condensation and solidification device 3. The microcapsule production channel (2) as a whole adopts a hollow glass structure.

4. The microcapsule curing device for microfluidic technology according to claim 2, characterized in that: The condensation and solidification device (3) comprises an inlet pipe (31) of the condensation and solidification device, an outlet pipe (32) of the condensation and solidification device, a condensation and solidification mesh disk (33), a constant temperature and humidity tank (34) and a microfluidic injection pump (35); the end faces of the condensation and solidification mesh disk (33) and the inlet pipe (31) and the outlet pipe (32) of the condensation and solidification device are overlapped and fixed; the top surface of the inlet pipe support seat (12) of the condensation and solidification device is fixedly connected to the bottom surface of the inlet pipe (31) of the condensation and solidification device; the outlet pipe (32) of the condensation and solidification device is connected to the solidification washing device (4); the constant temperature and humidity tank (34) is located on one side of the entire condensation and solidification device (3) and is respectively connected to the inlet pipe (31) and the outlet pipe (32) of the condensation and solidification device through pipelines to provide circulating condensed water for the condensation and solidification device; the microfluidic injection pump (35) is placed on the upper surface of the microcapsule production channel support platform (11) to provide solidification liquid for the condensation and solidification device (3).

5. The microcapsule curing device for microfluidic technology according to claim 4, characterized in that: The inlet pipe (31) of the condensation and solidification device comprises an inlet pipe body (311), a condensation water inlet pipe (312) and a solidification liquid injection pipe (313); one end of the inlet pipe body (311) is sealed, and the other end is connected to the condensation and solidification mesh disk (33); the condensation water inlet pipe (312) is connected to the middle of one side of the inlet pipe body (311) and passes through the inlet pipe body (311); the condensation water inlet pipe (312) is used to input the condensation water in the constant temperature and humidity tank (34) into the condensation and solidification device 3 to start solidification of the microcapsules; the starting end of the inlet pipe body (311) has a solidification liquid channel (3111); the solidification liquid injection pipe (313) is connected to the starting end of one side of the inlet pipe body (311) and the solidification liquid injection pipe (313) is connected to the solidification liquid channel (3111). The microfluidic injection pump (35) is placed on the upper surface of the microcapsule production channel support platform (11) and is connected to the solidifying liquid injection tube (313) for passing the solidifying liquid into the solidifying liquid injection tube (313). The solidifying liquid injection tube (313) is used to pass the solidifying liquid into the solidifying liquid channel (3111) to provide solidifying liquid for the condensation solidification device (3). The upper surface of the inlet pipe body (311) is provided with a plurality of independent inlet pipe grooves (3112). The inlet pipe grooves (3112) are connected to the solidifying liquid channel (3111) and are used to receive microcapsules from the microcapsule outlet pipe (22) and the solidifying liquid in the solidifying liquid channel (3111) to start solidification of the microcapsules.

6. The microcapsule curing device for microfluidic technology according to claim 5, characterized in that: The condensation and solidification mesh disk (33) is a spring-shaped, hollow structure with a groove on the upper surface, comprising a condensation water channel (331), the upper starting end and the lower end respectively overlapping and connected with the inlet pipe (31) and the outlet pipe (32) of the condensation and solidification device, the condensation water channel (331) is hollow, and the upper surface has a condensation and solidification mesh disk groove (3311), the condensation water channel (331) is connected with the inlet pipe (31) and the outlet pipe (32) of the condensation and solidification device, so as to ensure that the condensation water circulates in the condensation and solidification mesh disk (33), and the condensation and solidification mesh disk groove (3311) comprises a plurality of independent grooves, which respectively receive microcapsules from the inlet pipe groove (3112).

7. The microcapsule curing device for microfluidic technology according to claim 6, characterized in that: The condensation and solidification device outlet pipe (32) comprises an outlet pipe body (321) and a condensed water outlet pipe (322); one end of the outlet pipe body (321) is connected to the condensation and solidification mesh disk (33), and the other end has an inclined microcapsule outlet plate (3211); the condensed water outlet pipe (322) is connected to the middle of the outer wall of one side of the outlet pipe body (321) to pass the condensed water in the condensation and solidification device (3) back to the constant temperature and humidity tank (34); the upper surface of the outlet pipe body (321) has a plurality of independent outlet pipe grooves (3212); the outlet pipe grooves (3212) are used to receive microcapsules from the condensation and solidification mesh disk grooves (3311).

8. The microcapsule curing device for microfluidic technology according to claim 7, characterized in that: The solidification washing device (4) comprises a secondary solidification device (41) and a washing device (42); the secondary solidification device comprises a square plug (411), a solidification liquid outlet pipe (412), and a solidification filter (413); the square plug (411) is arranged in the middle of the bottom of the secondary solidification device; the solidification liquid outlet pipe (412) is arranged on the top of the side of the secondary solidification device; the solidification filter (413) is arranged inside the solidification liquid outlet pipe (412); the washing device (42) comprises a water pipe outlet (421), a turbine fan (422), and a water pipe inlet (423); water flows into the washing device through the water pipe inlet (423); driven by the turbine fan (422), the water flows in rotation, and waste water flows into the washing collection device (5) through the water pipe outlet (423).

9. The microcapsule curing device for microfluidic technology according to claim 8, characterized in that: The washing collection device (5) comprises a washing collection container (51), a washing magnetic stirrer (52), and a waste liquid collection tank (53); the washing collection container (51) is placed on the upper surface of the washing magnetic stirrer (52); the waste liquid collection tank (53) is placed on one side of the washing magnetic stirrer (52); the washing magnetic stirrer (52) comprises a washing device speed button (521), a washing device temperature button (522), and a washing device display screen (523); the washing device display screen 523 is used to display the real-time temperature and speed of the washing magnetic stirrer 52; the washing device temperature button 522 is used to adjust the stirring temperature; the washing device speed button 521 is used to adjust the stirring speed; the washing collection container (51) comprises a deionized water inlet pipe (511), a deionized water outlet pipe (512), and a washing filter (513).

10. The microcapsule curing device for microfluidic technology according to claim 9, characterized in that: The deionized water inlet pipe (511) is connected to the left outer wall of the washing and collecting container (51) for introducing pure deionized water. The deionized water outlet pipe (512) is connected to the right outer wall of the washing and collecting container (51) for discharging the waste liquid after washing into the waste liquid collecting tank (53). The washing filter (513) is arranged in the middle position inside the washing and collecting container (51) and is detachable. The washing magnetic stirrer (52) is opened and deionized water is introduced through the deionized water inlet pipe (511) to wash the solidified liquid remaining on the surface of the microcapsules after secondary solidification. After washing is completed, the microcapsules are separated from the washing waste liquid through the washing filter (513). The microcapsules are placed on the surface of the washing filter (513) and dried and collected by setting an appropriate temperature. The washing waste liquid is discharged into the waste liquid collecting tank (53).

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