A complete set of production equipment and production method for hydrogel particles

Abstract

The present invention belongs to the field of hydrogel production and relates to a complete set of hydrogel particle production equipment and a production method. The equipment comprises: a data acquisition module for acquiring oxygen concentration data and humidity data; an oxygen analysis module for determining whether a single freeze-thaw cycle is qualified based on the oxygen concentration difference of a single cycle of the oxygen concentration data; a data processing module for determining whether the structure of the hydrogel is stable based on a parameter characterizing a concentration difference change after three freeze-thaw cycles, and adjusting a freezing time or a drying time based on the difference; a humidity analysis module for determining whether humidity uniformity is qualified based on a humidity gradient value of humidity data, and determining an unqualified humidity environment chamber based on a humidity change rate of the humidity data; and a data adjustment module for determining an adjusted temperature based on a ratio of a humidity change rate to a preset humidity change rate, or adjusting a fan speed based on a relative difference between the humidity change rate and the preset humidity change rate. The present invention improves the stability of the hydrogel structure.

Description

Technical Field

[0001] The invention belongs to the field of hydrogel production and relates to a complete set of production equipment and a production method for hydrogel particles. Background Art

[0002] In order to effectively reduce the endogenous pollution load of the river, thereby achieving the goal of improving water quality and habitat and promoting ecological restoration, the functional materials of slow-release oxygen, adsorption and catalytic redox are organically combined to design and synthesize a multifunctional water ecological restoration hydrogel oxygen-releasing material. The multifunctional water ecological restoration oxygen-releasing material with polyvinyl alcohol hydrogel as the base material is synthesized by the freeze-thaw-crosslinking method. The material has a strong decontamination effect and has less impact on the environment.

[0003] Chinese patent application publication number CN103788385A discloses a method for preparing hydrogel photonic crystal particles using a spray drying method, comprising: dispersing monodisperse colloidal particles in water to prepare a monodisperse colloidal particle emulsion; preparing a hydrogel solution, adding the hydrogel solution to the monodisperse colloidal particle emulsion to prepare a mixed emulsion; and pumping the mixed emulsion into a spray drying apparatus and spray drying it to prepare the hydrogel photonic crystal particles. This application utilizes water as a solvent in the mixed emulsion used as the spray drying raw material, reducing operational requirements, improving safety, and avoiding environmental pollution caused by the use of organic solvents. Due to the introduction of hydrogel into the mixed emulsion, the prepared hydrogel photonic crystal particles have biocompatibility and biodegradability, and the hydrogel material is easily modified, making the application of hydrogel photonic crystals more extensive. Since the hydrogel photonic crystal particles are prepared by spray drying, this application can be mass-produced, improving production efficiency.

[0004] However, the existing technology has the following problems: the existing technology does not perform fine processing on excessive oxidation and uneven humidity during the freeze-thaw process of the hydrogel, resulting in instability of the hydrogel structure, thereby causing the problem of low stability of the hydrogel structure. Summary of the Invention

[0005] To this end, the present invention provides a complete set of hydrogel particle production equipment and production method to overcome the problem that the existing technology does not perform fine treatment on excessive oxidation and uneven humidity during the freeze-thaw process of the hydrogel, resulting in instability of the hydrogel structure and thus low stability of the hydrogel structure.

[0006] To achieve the above object, the present invention provides a complete set of production equipment for hydrogel particles, comprising:

[0007] Environmental chamber, which includes a freezing chamber and a drying chamber,

[0008] a detection mechanism comprising an oxygen detection device for detecting indoor oxygen concentration and a humidity detection device for detecting indoor humidity, respectively provided in the freezing chamber and the drying chamber;

[0009] A control mechanism, which is disposed in the environmental chamber, comprises:

[0010] A data acquisition module, which is used to obtain oxygen concentration data and humidity data detected by the detection mechanism;

[0011] an oxygen analysis module connected to the data acquisition module, for determining whether a single freeze-thaw cycle is qualified based on the single-cycle oxygen concentration difference of the oxygen concentration data;

[0012] a data processing module connected to the oxygen analysis module, for determining whether the structure of the hydrogel is stable based on a concentration difference change characterizing parameter after three freeze-thaw cycles, under the condition that a single freeze-thaw cycle is qualified, and adjusting the freezing time or drying time based on the difference between the concentration difference change characterizing parameter and a preset concentration difference change characterizing parameter;

[0013] a humidity analysis module connected to the data processing module, for determining whether the humidity uniformity of a single freeze-thaw cycle is qualified based on the humidity gradient value of the humidity data under the condition that a single freeze-thaw cycle fails, and determining an environmental chamber with unqualified humidity based on the humidity change rate of the humidity data;

[0014] A data adjustment module is connected to the humidity analysis module and is used to determine whether to adjust the temperature of the freezing chamber or the drying chamber based on the ratio of the humidity change rate to the preset humidity change rate, or to determine whether to adjust the fan speed based on the relative difference between the humidity change rate and the preset humidity change rate.

[0015] Furthermore, the oxygen analysis module determines that a single freeze-thaw cycle is qualified based on a comparison result that the single-cycle oxygen concentration difference of the oxygen concentration data is less than or equal to a preset single-cycle oxygen concentration difference, and determines that the structural stability of the hydrogel is determined based on a comparison result that the concentration difference change characterization parameter is less than or equal to a preset concentration difference change characterization parameter.

[0016] Furthermore, the oxygen analysis module determines that a single freeze-thaw cycle is qualified based on a comparison result that the single-cycle oxygen concentration difference of the oxygen concentration data is less than or equal to a preset single-cycle oxygen concentration difference, and determines that the structure of the hydrogel is unstable based on a comparison result that the concentration difference change characterizing parameter is greater than the preset concentration difference change characterizing parameter.

[0017] The process of adjusting the freezing time or the drying time by the data processing module under the condition that the structure of the hydrogel is determined to be unstable includes:

[0018] Subtracting the concentration difference change characterizing parameter from a preset concentration difference change characterizing parameter;

[0019] Determining, based on the comparison result that the difference is less than or equal to the preset difference, to increase the freezing time of the freezing chamber by a preset freezing time adjustment coefficient;

[0020] Based on the comparison result that the difference is greater than the preset difference, it is determined that the drying time of the drying chamber is increased by the preset drying time adjustment coefficient.

[0021] Furthermore, the oxygen analysis module determines that a single freeze-thaw cycle is unqualified based on a comparison result that the single-cycle oxygen concentration difference of the oxygen concentration data is greater than a preset single-cycle oxygen concentration difference, and determines that the humidity uniformity of the single freeze-thaw cycle is unqualified based on a comparison result that the humidity gradient value of the humidity data is greater than a humidity gradient threshold.

[0022] Furthermore, the humidity analysis module determines that the humidity in the freezing chamber or drying chamber is unqualified based on the comparison result that the humidity change rate of the humidity data is less than or equal to the preset humidity change rate under the condition that the humidity uniformity of a single freeze-thaw cycle is unqualified.

[0023] Furthermore, under the condition that the humidity uniformity of a single freeze-thaw cycle is determined to be unqualified, the humidity analysis module determines that the humidity in both the freezing chamber and the drying chamber is unqualified based on the comparison result that the humidity change rate of the humidity data is greater than a preset humidity change rate.

[0024] Furthermore, the process of the data adjustment module adjusting the temperature of the freezing chamber or the drying chamber under the condition that the humidity of the freezing chamber or the drying chamber is determined to be unqualified includes:

[0025] Divide the humidity change rate by the preset humidity change rate;

[0026] determining to reduce the freezing temperature of the freezing chamber by a preset freezing temperature adjustment coefficient based on a comparison result in which the ratio is less than or equal to a preset ratio;

[0027] Based on the comparison result that the ratio is greater than the preset ratio, it is determined that the drying temperature of the drying chamber is increased by the preset drying temperature adjustment coefficient.

[0028] Furthermore, the process of adjusting the fan speed by the data adjustment module when determining that the humidity in both the freezing chamber and the drying chamber is unqualified includes:

[0029] Taking the relative difference between the humidity change rate and the preset humidity change rate;

[0030] Setting a number of adjustment coefficients corresponding to the corresponding relative differences;

[0031] increasing the fan speed based on a number of said adjustment factors;

[0032] A corresponding relationship between the corresponding relative difference and the increase in the fan speed is set to adjust the fan speed.

[0033] Another aspect of the present invention provides a complete production method for hydrogel particles, comprising:

[0034] Obtain oxygen concentration and humidity data detected by the testing agency;

[0035] Determining whether a single freeze-thaw cycle is qualified based on a single cycle oxygen concentration difference of the oxygen concentration data;

[0036] Under the condition that a single freeze-thaw cycle is qualified, the stability of the hydrogel structure is determined according to the concentration difference change characterization parameter after three freeze-thaw cycles, and the freezing time or drying time is adjusted according to the difference between the concentration difference change characterization parameter and the preset concentration difference change characterization parameter;

[0037] Under the condition that a single freeze-thaw cycle fails, determining whether the humidity uniformity of a single freeze-thaw cycle is qualified according to the humidity gradient value of the humidity data, and determining an environmental chamber with unqualified humidity according to the humidity change rate of the humidity data;

[0038] The temperature of the freezing chamber or the drying chamber is adjusted based on the ratio of the humidity change rate to the preset humidity change rate, or the fan speed is adjusted based on the relative difference between the humidity change rate and the preset humidity change rate.

[0039] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention injects the aqueous dispersion into the mold through the injection mechanism, the pushing mechanism sends the mold into the freezing chamber and the drying chamber in sequence for freeze-thaw cycle treatment, the pulling mechanism pulls out the treated mold, and the detection mechanism monitors the oxygen concentration and humidity data in real time to determine whether the freeze-thaw cycle is qualified and whether the hydrogel structure is stable. If an abnormality is found, the freezing time, drying time, single chamber temperature or fan speed are adjusted to optimize the working state of the environmental chamber, improve the freeze-thaw cycle treatment effect, ensure the stability of the hydrogel structure, and improve the efficiency and quality of hydrogel preparation.

[0040] Furthermore, the present invention improves the quality of the hydrogel and the production efficiency by comparing the oxygen concentration difference of a single cycle with the oxygen concentration difference of a single cycle, and when a single freeze-thaw cycle is qualified, comparing the concentration difference change characterizing parameter after three freeze-thaw cycles with the preset concentration difference change characterizing parameter, thereby improving the accuracy and reliability of the freeze-thaw cycle process.

[0041] Furthermore, the present invention improves the accuracy and specificity of the preparation and avoids affecting the performance and quality of the hydrogel due to uneven humidity problems by adjusting the freezing time or drying time according to the difference between the concentration difference change characterizing parameter and the preset concentration difference change characterizing parameter when the hydrogel structure is unstable, and judging the humidity uniformity according to the humidity gradient value when a single freeze-thaw cycle fails, and judging the humidity unqualified chamber according to the humidity change rate when it fails.

[0042] Furthermore, the present invention reduces the impact of humidity fluctuations on hydrogel performance and improves the stability and consistency of hydrogel quality by adjusting the freezing temperature or drying temperature according to the ratio of the humidity change rate to a preset humidity change rate when the humidity in a single chamber is unqualified, and adjusting the fan speed according to the relative difference between the humidity change rate and the preset humidity change rate when the humidity in both chambers is unqualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a schematic structural diagram of a complete set of equipment for producing hydrogel particles according to an embodiment of the present invention.

[0044] Figure 2 The figure is a flow chart of a complete production method of hydrogel particles according to an embodiment of the present invention.

[0045] Figure 3 This is a flow chart for determining whether a single freeze-thaw cycle is qualified according to an embodiment of the present invention.

[0046] Figure 4 This is a flow chart for determining whether the structure of a hydrogel is stable according to an embodiment of the present invention.

[0047] In the figure, 1, freezing chamber; 2, drying chamber; 3, glue injection mechanism; 401, first pushing unit; 402, second pushing unit; 501, first pulling unit; 502, second pulling unit; 6, observation window; 701, oxygen detection device; 702, humidity detection device. DETAILED DESCRIPTION

[0048] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention.

[0049] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0050] It should be pointed out that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical test data and the corresponding historical test results of the three months before this test. It can be understood by those skilled in the art that the present invention can determine the above parameters for a single item by selecting the value with the highest proportion as the preset standard parameter based on the data distribution, using weighted summation to use the obtained value as the preset standard parameter, substituting each historical data into a specific formula and using the value obtained by the formula as the preset standard parameter or other selection methods, as long as the present invention can clearly define the different specific situations in the single determination process through the obtained values.

[0051] See also Figure 1 As shown in FIG, it is a structural schematic diagram of a complete set of production equipment for hydrogel particles according to an embodiment of the present invention.

[0052] An environmental chamber comprising a freezing chamber 1 and a drying chamber 2;

[0053] A glue injection mechanism 3, which is arranged on the left side of the freezing chamber 1 and is used to inject the aqueous dispersion into a plurality of molds;

[0054] The pushing mechanism includes a first pushing unit 401 provided on the left side of the injection mechanism 3 for sending the mold after injection into the freezing chamber 1, and a second pushing unit 402 provided on the left side of the drying chamber 2 for sending the mold after freezing into the drying chamber 2;

[0055] The pulling mechanism includes a first pulling unit 501 provided on the right side of the freezing chamber 1 for pulling out the frozen mold, and a second pulling unit 502 provided on the right side of the drying chamber 2 for pulling out the dried mold;

[0056] An observation mechanism, comprising observation windows 6 respectively provided on both sides of the freezing chamber 1 and the drying chamber 2 for observing the samples in the chambers;

[0057] A detection mechanism, comprising an oxygen detection device 701 disposed in the freezing chamber 1 and the drying chamber 2, respectively, close to the observation mechanism for detecting indoor oxygen concentration, and a humidity detection device 702 disposed away from the oxygen detection device 701 for detecting indoor humidity;

[0058] A control mechanism, which is disposed in the environmental chamber, comprises:

[0059] A data acquisition module, which is used to obtain oxygen concentration data and humidity data detected by the detection mechanism;

[0060] an oxygen analysis module connected to the data acquisition module, for determining whether a single freeze-thaw cycle is qualified based on the single-cycle oxygen concentration difference of the oxygen concentration data;

[0061] a data processing module connected to the oxygen analysis module, for determining whether the structure of the hydrogel is stable based on a concentration difference change characterizing parameter after three freeze-thaw cycles, under the condition that a single freeze-thaw cycle is qualified, and adjusting the freezing time or drying time based on the difference between the concentration difference change characterizing parameter and a preset concentration difference change characterizing parameter;

[0062] a humidity analysis module connected to the data processing module, for determining whether the humidity uniformity of a single freeze-thaw cycle is qualified based on the humidity gradient value of the humidity data under the condition that a single freeze-thaw cycle fails, and determining an environmental chamber with unqualified humidity based on the humidity change rate of the humidity data;

[0063] A data adjustment module is connected to the humidity analysis module and is used to determine whether to adjust the temperature of the freezing chamber or the drying chamber based on the ratio of the humidity change rate to the preset humidity change rate, or to determine whether to adjust the fan speed based on the relative difference between the humidity change rate and the preset humidity change rate.

[0064] In the embodiment of the present invention, the oxygen detection device is an electrochemical oxygen sensor, and the humidity detection device is a capacitive humidity sensor, which is not specifically limited and only needs to be able to measure oxygen concentration data and humidity data.

[0065] In the embodiment of the present invention, the freezing time of the freezing chamber ranges from 2.8h to 3.2h, preferably 3h, the freezing temperature ranges from -22°C to -18°C, preferably -20°C, and the freezing rate ranges from 180rpm to 220rpm, preferably 200rpm. The above parameters are obtained by taking the average value of the freezing parameters of the freezing chamber in several historical experiments with qualified hydrogel preparation stability. The freezing parameters are freezing time, freezing temperature and freezing rate.

[0066] In the embodiment of the present invention, the drying time of the drying chamber ranges from 3.7h to 4.3h, preferably 4h, the drying temperature ranges from 24°C to 26°C, preferably 25°C, and the drying rate ranges from 270rpm to 230rpm, preferably 300rpm. The above parameters are obtained by taking the average value of the drying parameters of the drying chamber in several historical experiments with qualified hydrogel preparation stability. The drying parameters are drying time, drying temperature and drying rate.

[0067] See also Figure 2 As shown, it is a flow chart of the complete production method of hydrogel particles according to an embodiment of the present invention.

[0068] Another aspect of the present invention provides a complete production method for hydrogel particles, comprising:

[0069] Step S1, obtaining oxygen concentration data and humidity data detected by a detection mechanism;

[0070] Step S2, determining whether a single freeze-thaw cycle is qualified based on the single-cycle oxygen concentration difference of the oxygen concentration data;

[0071] Step S3, based on the condition that a single freeze-thaw cycle is qualified, determining whether the structure of the hydrogel is stable according to the concentration difference change characterizing parameter after three freeze-thaw cycles, and adjusting the freezing time or drying time according to the difference between the concentration difference change characterizing parameter and a preset concentration difference change characterizing parameter;

[0072] Step S4, based on the condition that a single freeze-thaw cycle fails, determining whether the humidity uniformity of the single freeze-thaw cycle is qualified according to the humidity gradient value of the humidity data, and determining the environmental chamber with unqualified humidity according to the humidity change rate of the humidity data;

[0073] Step S5: adjusting the temperature of the freezing chamber or the drying chamber based on the ratio of the humidity change rate to the preset humidity change rate or adjusting the fan speed based on the relative difference between the humidity change rate and the preset humidity change rate.

[0074] Specifically, the present invention injects the aqueous dispersion into the mold through the glue injection mechanism, the pushing mechanism sends the mold into the freezing chamber and the drying chamber in sequence for freeze-thaw cycle treatment, the pulling mechanism pulls out the treated mold, and the detection mechanism monitors the oxygen concentration and humidity data in real time to determine whether the freeze-thaw cycle is qualified and whether the hydrogel structure is stable. If an abnormality is found, the freezing time, drying time, single chamber temperature or fan speed are adjusted to optimize the working state of the environmental chamber, improve the freeze-thaw cycle treatment effect, ensure the stability of the hydrogel structure, and improve the efficiency and quality of hydrogel preparation.

[0075] See also Figure 3 As shown, it is a flow chart of determining whether a single freeze-thaw cycle is qualified according to an embodiment of the present invention.

[0076] Specifically, the oxygen analysis module determines whether a single freeze-thaw cycle is qualified based on a comparison result of a single-cycle oxygen concentration difference of the oxygen concentration data and a preset single-cycle oxygen concentration difference;

[0077] If the single-cycle oxygen concentration difference is less than or equal to the preset single-cycle oxygen concentration difference, it is determined that the single freeze-thaw cycle is qualified;

[0078] If the single-cycle oxygen concentration difference is greater than the preset single-cycle oxygen concentration difference, it is determined that the single freeze-thaw cycle is unqualified.

[0079] In the embodiment of the present invention, the preset single-cycle oxygen concentration difference is 0.5%. The preset single-cycle oxygen concentration difference is obtained when the maximum value of the single-cycle oxygen concentration differences of several single freeze-thaw cycles that have passed the test is taken. However, the above value is not limited to this. Those skilled in the art can also adjust the value according to actual needs.

[0080] During implementation, the single-cycle oxygen concentration difference is the absolute value of the difference between the oxygen concentration at the end of the single cycle and the oxygen concentration at the beginning of the single cycle.

[0081] See also Figure 4 As shown, it is a flow chart of determining whether the structure of the hydrogel is stable according to an embodiment of the present invention.

[0082] Specifically, the data processing module determines whether the structure of the hydrogel is stable based on the comparison result of the concentration difference change characterizing parameter after three freeze-thaw cycles and the preset concentration difference change characterizing parameter under the condition that a single freeze-thaw cycle is qualified;

[0083] If the concentration difference change characterizing parameter is less than or equal to the preset concentration difference change characterizing parameter, it is determined that the structure of the hydrogel is stable;

[0084] If the concentration difference change characterizing parameter is greater than the preset concentration difference change characterizing parameter, it is determined that the structure of the hydrogel is unstable.

[0085] In an embodiment of the present invention, the preset concentration difference change characterization parameter is 0.25. The preset concentration difference change characterization parameter is obtained when the concentration difference change characterization parameter of the structural stability of several historical hydrogels takes the maximum value, but the above value is not limited to this. Those skilled in the art can also adjust the value according to actual needs.

[0086] During implementation, the concentration difference variation characterizing parameter is the absolute value of the difference between the third cycle oxygen concentration difference and the first cycle oxygen concentration difference divided by the first cycle oxygen concentration difference.

[0087] Specifically, the present invention compares the oxygen concentration difference of a single cycle with the oxygen concentration difference of a single cycle, and when a single freeze-thaw cycle is qualified, compares the concentration difference change characterizing parameter after three freeze-thaw cycles with the preset concentration difference change characterizing parameter, thereby improving the quality of the hydrogel and the production efficiency, thereby improving the accuracy and reliability of the freeze-thaw cycle process.

[0088] Specifically, under the condition that the structure of the hydrogel is determined to be unstable, the data processing module determines the adjustment of the freezing time or the drying time based on the comparison result of the difference between the concentration difference change characterizing parameter and the preset concentration difference change characterizing parameter and the preset difference.

[0089] If the difference is less than or equal to the preset difference, it is determined to increase the freezing time of the freezing chamber to a corresponding value using the preset freezing time adjustment coefficient of 1.05;

[0090] If the difference is greater than the preset difference, it is determined that the drying time of the drying chamber is reduced to a corresponding value using a preset drying time adjustment coefficient of 0.98;

[0091] The difference is the difference between the concentration difference change characterizing parameter and the preset concentration difference change characterizing parameter.

[0092] In the embodiment of the present invention, the preset difference value is 0.12, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0093] In the embodiment of the present invention, the increased freezing time is the product of the freezing time and the preset freezing time adjustment coefficient. The preset freezing time adjustment coefficient is 1.05; the reduced drying time is the product of the preset drying time adjustment coefficient and the drying time. The preset drying time adjustment coefficient is 0.98. In order to ensure that the adjusted freezing time and drying time meet actual needs, the adjustment range should not be too large, so the adjustment coefficient is set accordingly to control the adjustment range.

[0094] The humidity analysis module determines whether the humidity uniformity of the single freeze-thaw cycle is qualified according to a comparison result of the humidity gradient value of the humidity data and the humidity gradient threshold value under the condition that the single freeze-thaw cycle is determined to be unqualified;

[0095] If the humidity gradient value is less than or equal to the humidity gradient threshold, it is determined that the humidity uniformity of the single freeze-thaw cycle is qualified;

[0096] If the humidity gradient value is greater than the humidity gradient threshold, it is determined that the humidity uniformity of the single freeze-thaw cycle is unqualified.

[0097] In an embodiment of the present invention, the humidity gradient threshold is 10%. The humidity gradient threshold is obtained by taking the average of several historical humidity gradient values ​​that meet the humidity uniformity requirements. However, the above value is not limited to this. Those skilled in the art can also adjust the value according to actual needs.

[0098] During implementation, the humidity gradient value is the ratio of the sum of the difference between the maximum humidity and the minimum humidity at different locations in the drying room or freezing room divided by the average humidity value to the number of locations.

[0099] Specifically, the humidity analysis module determines that the humidity uniformity of a single freeze-thaw cycle is unqualified, and determines the humidity unqualified room according to the comparison result of the humidity change rate of the humidity data and the preset humidity change rate;

[0100] If the humidity change rate is less than or equal to the preset humidity change rate, determining that the humidity in the single room is unqualified;

[0101] If the humidity change rate is greater than the preset humidity change rate, it is determined that the humidity in both chambers is unqualified.

[0102] In the embodiment of the present invention, the preset humidity change rate is 1% / min, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0103] During implementation, the humidity change rate is the ratio of the humidity change to the time interval.

[0104] In the embodiment of the present invention, the unqualified humidity in a single chamber refers to the unqualified humidity in one of the freezing chamber or the drying chamber, and the unqualified humidity in both chambers refers to the unqualified humidity in both the freezing chamber and the drying chamber.

[0105] Specifically, the present invention improves the accuracy and specificity of the preparation and avoids affecting the performance and quality of the hydrogel due to uneven humidity problems by adjusting the freezing time or drying time according to the difference between the concentration difference change characterizing parameter and the preset concentration difference change characterizing parameter when the hydrogel structure is unstable, and judging the humidity uniformity according to the humidity gradient value when a single freeze-thaw cycle fails, and judging the humidity unqualified chamber according to the humidity change rate when it fails.

[0106] Specifically, the data adjustment module determines to adjust the temperature of the single chamber according to a comparison result of the ratio of the humidity change rate to the preset humidity change rate and the preset ratio under the condition that the humidity of the single chamber is determined to be unqualified;

[0107] If the ratio is less than or equal to the preset ratio, it is determined to reduce the freezing temperature of the freezing chamber to a corresponding value using a preset freezing temperature adjustment coefficient of 0.95;

[0108] If the ratio is greater than the preset ratio, it is determined to increase the drying temperature of the drying chamber to a corresponding value using a preset drying temperature adjustment coefficient of 1.07;

[0109] The ratio is the ratio of the humidity change rate to the preset humidity change rate.

[0110] In the embodiment of the present invention, the preset ratio is 0.85, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0111] In an embodiment of the present invention, the reduced freezing temperature is the product of the freezing temperature and the preset freezing temperature adjustment coefficient, and the preset freezing temperature adjustment coefficient is 0.95; the increased drying temperature is the product of the drying temperature and the preset drying temperature adjustment coefficient, and the preset drying temperature adjustment coefficient is 1.07. In order to ensure that the adjusted freezing temperature and drying temperature meet actual needs, the adjustment range should not be too large, so the corresponding adjustment coefficient is set to control the adjustment range.

[0112] Specifically, the data adjustment module determines to adjust the fan speed according to the comparison result of the relative difference between the humidity change rate and the preset humidity change rate and the preset relative difference when it is determined that the humidity in both chambers is unqualified;

[0113] If the relative difference is less than or equal to the preset relative difference, determining to increase the fan speed to a corresponding value using a first preset speed adjustment coefficient of 1.12;

[0114] If the relative difference is greater than the preset relative difference, determining to increase the fan speed to a corresponding value using a second preset speed adjustment coefficient of 1.16;

[0115] The relative difference is the relative difference between the humidity change rate and the preset humidity change rate.

[0116] In the embodiment of the present invention, the preset relative difference value is 0.3, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0117] In an embodiment of the present invention, the increased fan speed is the product of the fan speed and the preset speed adjustment coefficient. The preset speed adjustment coefficient includes a first preset speed adjustment coefficient, which has a value of 1.12 and a second preset speed adjustment coefficient, which has a value of 1.16. The fan speed includes a freezing rate and a drying rate. In order to ensure that the adjusted fan speed meets actual needs, the adjustment range should not be too large, so the corresponding adjustment coefficient is set to control the adjustment range.

[0118] Specifically, the present invention adjusts the freezing temperature or drying temperature according to the ratio of the humidity change rate to the preset humidity change rate when the humidity in a single chamber is unqualified; and adjusts the fan speed according to the relative difference between the humidity change rate and the preset humidity change rate when the humidity in both chambers is unqualified, thereby reducing the impact of humidity fluctuations on the performance of the hydrogel and improving the stability and consistency of the hydrogel quality.

[0119] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0120] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A complete set of production equipment for hydrogel particles, characterized in that: include: Environmental chamber, which includes a freezing chamber and a drying chamber, a detection mechanism comprising an oxygen detection device for detecting indoor oxygen concentration and a humidity detection device for detecting indoor humidity, respectively provided in the freezing chamber and the drying chamber; A control mechanism, which is disposed in the environmental chamber, comprises: A data acquisition module, which is used to obtain oxygen concentration data and humidity data detected by the detection mechanism; an oxygen analysis module connected to the data acquisition module, for determining whether a single freeze-thaw cycle is qualified based on the single-cycle oxygen concentration difference of the oxygen concentration data; a data processing module connected to the oxygen analysis module, for determining whether the structure of the hydrogel is stable based on a concentration difference change characterizing parameter after three freeze-thaw cycles, under the condition that a single freeze-thaw cycle is qualified, and adjusting the freezing time or drying time based on the difference between the concentration difference change characterizing parameter and a preset concentration difference change characterizing parameter; a humidity analysis module connected to the data processing module, for determining whether the humidity uniformity of a single freeze-thaw cycle is qualified based on the humidity gradient value of the humidity data under the condition that a single freeze-thaw cycle fails, and determining an environmental chamber with unqualified humidity based on the humidity change rate of the humidity data; A data adjustment module is connected to the humidity analysis module and is used to determine whether to adjust the temperature of the freezing chamber or the drying chamber based on the ratio of the humidity change rate to the preset humidity change rate, or to determine whether to adjust the fan speed based on the relative difference between the humidity change rate and the preset humidity change rate.

2. The complete set of hydrogel particle production equipment according to claim 1, characterized in that: The oxygen analysis module determines that a single freeze-thaw cycle is qualified based on a comparison result of the oxygen concentration difference of a single cycle of the oxygen concentration data being less than or equal to a preset single cycle oxygen concentration difference, and determines that the structure of the hydrogel is stable based on a comparison result of the concentration difference change characterization parameter being less than or equal to a preset concentration difference change characterization parameter.

3. The complete production equipment for hydrogel particles according to claim 2, characterized in that: The oxygen analysis module determines that a single freeze-thaw cycle is qualified based on a comparison result of the oxygen concentration difference of a single cycle of the oxygen concentration data being less than or equal to a preset single cycle oxygen concentration difference, and determines that the structure of the hydrogel is unstable based on a comparison result of the concentration difference change characterizing parameter being greater than a preset concentration difference change characterizing parameter.

4. The complete production equipment for hydrogel particles according to claim 3, characterized in that: The process of adjusting the freezing time or the drying time by the data processing module under the condition that the structure of the hydrogel is determined to be unstable includes: Subtracting the concentration difference change characterizing parameter from a preset concentration difference change characterizing parameter; Determining, based on the comparison result that the difference is less than or equal to the preset difference, to increase the freezing time of the freezing chamber by a preset freezing time adjustment coefficient; Based on the comparison result that the difference is greater than the preset difference, it is determined that the drying time of the drying chamber is increased by the preset drying time adjustment coefficient.

5. The complete production equipment for hydrogel particles according to claim 4, characterized in that: The oxygen analysis module determines that a single freeze-thaw cycle is unqualified based on a comparison result that a single-cycle oxygen concentration difference of the oxygen concentration data is greater than a preset single-cycle oxygen concentration difference, and determines that the humidity uniformity of the single freeze-thaw cycle is unqualified based on a comparison result that a humidity gradient value of the humidity data is greater than a humidity gradient threshold.

6. The complete production equipment for hydrogel particles according to claim 5, characterized in that: The humidity analysis module determines that the humidity in the freezing chamber or drying chamber is unqualified based on a comparison result that the humidity change rate of the humidity data is less than or equal to a preset humidity change rate, under the condition that the humidity uniformity of a single freeze-thaw cycle is unqualified.

7. The complete production equipment for hydrogel particles according to claim 6, characterized in that: The humidity analysis module determines that the humidity in both the freezing chamber and the drying chamber is unqualified based on a comparison result that the humidity change rate of the humidity data is greater than a preset humidity change rate, under the condition that the humidity uniformity of a single freeze-thaw cycle is unqualified.

8. The complete production equipment for hydrogel particles according to claim 7, characterized in that: The process of adjusting the temperature of the freezing chamber or the drying chamber by the data adjustment module when determining that the humidity of the freezing chamber or the drying chamber is unqualified includes: Divide the humidity change rate by the preset humidity change rate; determining to reduce the freezing temperature of the freezing chamber by a preset freezing temperature adjustment coefficient based on a comparison result in which the ratio is less than or equal to a preset ratio; Based on the comparison result that the ratio is greater than the preset ratio, it is determined that the drying temperature of the drying chamber is increased by the preset drying temperature adjustment coefficient.

9. The complete production equipment for hydrogel particles according to claim 8, characterized in that: The process of adjusting the fan speed by the data adjustment module when determining that the humidity in both the freezing chamber and the drying chamber is unqualified includes: Taking the relative difference between the humidity change rate and the preset humidity change rate; Setting a number of adjustment coefficients corresponding to the corresponding relative differences; increasing the fan speed based on a number of said adjustment factors; A corresponding relationship between the corresponding relative difference and the increase in the fan speed is set to adjust the fan speed.

10. A complete production method for hydrogel particles, using the complete production equipment for hydrogel particles according to any one of claims 1 to 9, characterized in that: include: Obtain oxygen concentration and humidity data detected by the testing agency; Determining whether a single freeze-thaw cycle is qualified based on a single cycle oxygen concentration difference of the oxygen concentration data; Under the condition that a single freeze-thaw cycle is qualified, the stability of the hydrogel structure is determined according to the concentration difference change characterization parameter after three freeze-thaw cycles, and the freezing time or drying time is adjusted according to the difference between the concentration difference change characterization parameter and the preset concentration difference change characterization parameter; Under the condition that a single freeze-thaw cycle fails, determining whether the humidity uniformity of a single freeze-thaw cycle is qualified according to the humidity gradient value of the humidity data, and determining an environmental chamber with unqualified humidity according to the humidity change rate of the humidity data; The temperature of the freezing chamber or the drying chamber is adjusted based on the ratio of the humidity change rate to the preset humidity change rate, or the fan speed is adjusted based on the relative difference between the humidity change rate and the preset humidity change rate.

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