Preparation control method and preparation device of sustained and controlled release pesticide

Abstract

The invention relates to the field of pesticide preparation, and discloses a preparation control method and a preparation device of a sustained and controlled release pesticide, and the preparation control method comprises the following steps: after determining a target pesticide, determining a target film material based on the target pesticide, and carrying out pretreatment and combination treatment on the target pesticide and the target film material to obtain a coated pesticide solution; meanwhile, coating treatment is conducted on the pesticide finished product based on a fluidized bed device, finally, release rate testing and screening are conducted on the pesticide finished product, and qualified dried coated pesticide particles are obtained. The sustained and controlled release pesticide can be prepared, the action time of the pesticide is prolonged by the sustained and controlled release pesticide, the pesticide application frequency is reduced, and the sustained and controlled release pesticide is remarkably helpful for reducing the environmental influence, improving the utilization rate and the like.

Description

Technical Field

[0001] The invention relates to the field of pesticide preparation, in particular to a preparation control method and a preparation device for a sustained-release pesticide. Background Art

[0002] A controlled-release pesticide is a specially treated pesticide designed to prolong the duration of action of the pesticide and reduce the frequency of application by slowly releasing the active ingredient. Compared with traditional pesticides, the advantage of controlled-release pesticides is that they can continuously release active ingredients over a long period of time, thereby prolonging the shelf life of the pesticide and reducing the number of times the pesticide is applied. At the same time, by controlling the release rate, the volatilization, decomposition or loss of the pesticide can be reduced, the utilization efficiency of the pesticide can be improved, and waste can be reduced. Furthermore, due to the slow release rate of the pesticide, the controlled-release pesticide can reduce the negative impact on the environment, reduce the toxicity to non-target organisms (such as bees, fish, etc.), and the controlled-release pesticide can reduce the amount of pesticide residues on the soil or crops, reducing the potential risks to human health and the environment. Therefore, it is necessary to prepare the pesticide into a controlled-release pesticide through a controlled-release technology, so a controlled-release pesticide preparation control method and a controlled-release pesticide preparation device are proposed to achieve the purpose of preparing the pesticide into a controlled-release pesticide. Summary of the invention

[0003] The present invention overcomes the shortcomings of the prior art and provides a preparation control method and a preparation device for a slow-release pesticide.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] The first aspect of the present invention provides a method for preparing a sustained-release pesticide, comprising the following steps:

[0006] Determine the type and concentration of pesticides, and select membrane materials based on the type and concentration of pesticides;

[0007] Pre-treating the target pesticide, and preparing a coating solution based on the target membrane material to obtain a coated pesticide solution;

[0008] The coated pesticide solution is coated on the dry pesticide particles multiple times based on the fluidized bed device, and the release rate of the finished pesticide products after multiple coatings is tested. The finished pesticide products after multiple coatings are screened based on the release rate test results to obtain qualified dry coated pesticide particles.

[0009] Further, in a preferred embodiment of the present invention, the type and concentration of the pesticide are determined, and the membrane material is selected based on the type and concentration of the pesticide, specifically:

[0010] Determine the action position of the pesticide and the crops that the pesticide affects. Based on the action position of the pesticide, determine the environmental parameters of the action position of the pesticide during the action time of the pesticide on the weather forecast platform and calibrate them as target environmental parameters.

[0011] Marking the crops that the pesticide acts on as target crops, obtaining a big data network, searching the big data network for the types of pesticides that can act on the target crops, marking them as the types of pesticides to be selected, and obtaining delivery order information of the target crops, analyzing the delivery order information of the target crops, and determining the target delivery status of the target crops;

[0012] The target delivery state of the target crop includes the surface smoothness, volume, weight and moisture content of the target crop when it is delivered;

[0013] In the big data network, the historical states of the target crop after all the selected pesticide types acted on the target crop at different concentrations are retrieved, and the corresponding selected pesticide type and the corresponding concentration whose historical state of the target crop has the greatest similarity with the target delivery state of the target crop are selected, and are marked as the target pesticide type and the target pesticide concentration respectively;

[0014] Pesticides of the target pesticide type and the target pesticide concentration are calibrated as target pesticides, and film materials that can be used to cover target crops based on the target environmental parameter type and the target pesticide are retrieved in the big data network and calibrated as target film materials.

[0015] Furthermore, in a preferred embodiment of the present invention, the target pesticide is pretreated, and a coating solution is prepared based on the target membrane material to obtain a coated pesticide solution, specifically:

[0016] Introducing a pesticide preparation device, wherein the pesticide preparation device can pre-treat the target pesticide, wherein the pre-treating of the target pesticide includes stirring, crushing, filtering, drying the target pesticide, and mixing and dissolving the target membrane material with an organic solvent;

[0017] Based on the big data network, historical data on the reaction rate between target pesticides and target crops at different volumes are retrieved, and the volume of the target pesticide corresponding to the fastest reaction rate is calibrated as the target volume;

[0018] Introducing the target pesticide into the pesticide preparation equipment, and presetting a target volume instruction in the pesticide preparation equipment, wherein the presetting target volume instruction in the pesticide preparation equipment controls the pesticide preparation equipment to stir and crush the target pesticide to a volume equal to the target volume;

[0019] Using the pesticide preparation equipment with preset target volume instructions, the target pesticide is stirred, crushed and filtered to obtain target pesticide particles, and the target pesticide particles are dried until the moisture content in the target pesticide particles is equal to zero to obtain dry pesticide particles;

[0020] An organic solvent is obtained, and the organic solvent and a target membrane material are pretreated by a pesticide preparation device to obtain a coated pesticide solution.

[0021] Further, in a preferred embodiment of the present invention, the organic solvent is obtained, and the organic solvent and the target film material are pretreated by a pesticide preparation device to obtain a coated pesticide solution, specifically:

[0022] Retrieve all organic solvent types that can dissolve the target membrane material in the big data network and mark them as the organic solvent types to be selected;

[0023] Adding target film material samples to organic solvents of different types of organic solvents to be selected respectively, and continuously stirring using pesticide preparation equipment to obtain a mixed solution of the organic solvent and the target film material sample, which is calibrated as a test film material mixed solution, wherein the test film material mixed solution contains a polymer of organic matter in the organic solvent and the target film material sample, which is calibrated as a test polymer;

[0024] When the pesticide preparation equipment is used for continuous stirring, the dissolution efficiency of the test polymer in the test film material mixed solution is monitored in real time, and the type of organic solvent to be selected corresponding to the test film material mixed solution with the greatest dissolution efficiency is calibrated as the target organic solvent type;

[0025] The target membrane material is added to an organic solvent of the target organic solvent type, and the mixture is continuously stirred using a pesticide preparation device to obtain a target membrane material mixed solution, which is named a coated pesticide solution.

[0026] Furthermore, in a preferred embodiment of the present invention, the coated pesticide solution is coated on the dry pesticide particles multiple times based on the fluidized bed device, and the release rate of the finished pesticide after multiple coatings is tested, and the finished pesticide after multiple coatings is screened based on the release rate test results to obtain qualified dry coated pesticide particles, specifically:

[0027] Obtain a fluidized bed device, wherein the fluidized bed device includes a sprayer, a pesticide coating device, and a vacuum dryer, wherein the pesticide coating device can generate an airflow to suspend dry pesticide particles, the sprayer can evenly spray the coating pesticide solution onto the suspended dry pesticide particles, and the vacuum dryer can perform vacuum drying on the dry pesticide particles sprayed with the coating pesticide solution;

[0028] Putting dry pesticide particles in the pesticide coating device of the fluidized bed device, and putting a coating pesticide solution in the sprayer of the fluidized bed device, operating the fluidized bed device, and controlling the sprayer based on the fluidized bed device to spray the coating pesticide solution onto the dry pesticide particles suspended in the pesticide coating device of the fluidized bed device;

[0029] A standard thickness threshold of the surface film layer of the dry pesticide particles after the dry pesticide particles are sprayed with the coating pesticide solution is preset, calibrated as the standard thickness threshold of the surface film layer, and the spraying rate, spraying amount and spraying range of the sprayer of the fluidized bed device when spraying the coating pesticide solution;

[0030] Based on the target volume of the dry pesticide particles, and the spraying rate, spraying amount and spraying range of the sprayer of the fluidized bed device when spraying the coated pesticide solution, the real-time thickness of the surface film layer of the dry pesticide particles is calculated in real time and calibrated as the real-time thickness of the surface film layer;

[0031] When the real-time thickness of the surface film layer is within the standard thickness threshold of the surface film layer, the sprayer is controlled by the fluidized bed device to spray the coated pesticide solution onto the dry pesticide particles suspended in the pesticide coating device of the fluidized bed device to obtain coated pesticide particles, and the coated pesticide particles are vacuum dried by a vacuum dryer to obtain dry coated pesticide particles;

[0032] The dry coated pesticide particles are subjected to a release rate simulation test, and after the release rate simulation test, the dry coated pesticide particles are screened as finished products to obtain qualified dry coated pesticide particles.

[0033] Furthermore, in a preferred embodiment of the present invention, the release rate simulation test is performed on the dry coated pesticide particles, and the finished product screening is performed on the dry coated pesticide particles after the release rate simulation test to obtain qualified dry coated pesticide particles, specifically:

[0034] The dried coated pesticide particles are classified into batches, and random sampling is performed on the dried coated pesticide particles in different batches to obtain dried coated pesticide particle samples;

[0035] Retrieve a method for preparing a solution simulating a target crop planting environment based on target environmental parameters and a target delivery state of a target crop in a big data network, and prepare a solution that can simulate a target crop planting environment based on the method for preparing a solution simulating a target crop planting environment, and mark it as a simulated test release solution;

[0036] The standard time for the dry coated pesticide particles to act on the target crops is preset and calibrated as the target action time. In combination with the target action time and the target delivery state of the target crops, the ratio of the dry coated pesticide particles to the simulated test release solution is calculated and calibrated as the standard ratio.

[0037] Obtain a constant temperature shaker, and place the dried coated pesticide particles into a simulated test release solution under a standard ratio through the constant temperature shaker to obtain a controlled-release pesticide solution to be analyzed;

[0038] Preset different concentration values ​​that the pesticide in the slow-release pesticide solution to be analyzed needs to reach, calibrate them as a type of target concentration, and preset the pesticide release monitoring time. Preset the standard consumption time threshold when the pesticide in the slow-release pesticide solution to be analyzed reaches a type of target concentration within the pesticide release monitoring time, and calibrate it as the target consumption time threshold;

[0039] During the pesticide release monitoring time, the real-time concentration of the pesticide in the slow-release pesticide solution to be analyzed is measured by a UV-visible photometer, and the time consumed when the real-time concentration of the pesticide is equal to the first-class target concentration is recorded and calibrated as the real-time consumption time;

[0040] It is determined whether the real-time consumption time is maintained within the target consumption time threshold. If so, the corresponding batch of dry coated pesticide particles are calibrated as qualified dry coated pesticide particles. If not, the corresponding batch of dry coated pesticide particles are calibrated as unqualified dry coated pesticide particles.

[0041] The second aspect of the present invention also provides a device for preparing a slow-release pesticide, characterized in that the device comprises:

[0042] A data retrieval module, which is used to retrieve usage and processing schemes of all materials used to prepare slow-release pesticides;

[0043] A pesticide preparation module, which can stir, crush, filter, dry, and mix and dissolve the target membrane material with an organic solvent;

[0044] A pesticide fluidized spraying module, comprising a sprayer, a pesticide coating device and a vacuum dryer, for uniformly spraying the coated pesticide solution into the dry pesticide particles and performing vacuum drying;

[0045] A constant temperature shaker preparation module, which is used to prepare a slow-release pesticide solution to be analyzed and simulate the diffusion process of the pesticide in the environment;

[0046] The data processing module includes a memory and a processor. The processor analyzes and processes the data obtained by each module, and the memory can store the data of each module.

[0047] The present invention solves the technical defects existing in the background technology, and the present invention has the following beneficial effects: after determining the target pesticide, the target membrane material is determined based on the target pesticide, and the target pesticide and the target membrane material are pre-treated and combined to obtain a coated pesticide solution, and the finished pesticide is coated based on a fluidized bed device, and finally the finished pesticide is tested and screened for release rate to obtain qualified dry coated pesticide particles. The present invention can prepare slow-release pesticides, which prolong the action time of the pesticides and reduce the frequency of application, which is significantly helpful in reducing environmental impact and improving utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0049] Figure 1 A flow chart showing a method for preparing a slow-release pesticide;

[0050] Figure 2 A flow chart of a method for preparing qualified dry coated pesticide particles is shown;

[0051] Figure 3 A module view of a device for preparing a sustained-release pesticide is shown. DETAILED DESCRIPTION

[0052] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0054] Figure 1 A flow chart of a method for preparing a sustained-release pesticide is shown, comprising the following steps:

[0055] S102: Determine the type and concentration of the pesticide, and select the membrane material based on the type and concentration of the pesticide;

[0056] S104: pretreating the target pesticide and preparing a coating solution based on the target membrane material to obtain a coated pesticide solution;

[0057] S106: coating the coated pesticide solution onto the dry pesticide particles multiple times using a fluidized bed device, and performing a release rate test on the finished pesticide products after multiple coatings, and screening the finished pesticide products after multiple coatings based on the release rate test results to obtain qualified dry coated pesticide particles.

[0058] Further, in a preferred embodiment of the present invention, the type and concentration of the pesticide are determined, and the membrane material is selected based on the type and concentration of the pesticide, specifically:

[0059] Determine the action position of the pesticide and the crops that the pesticide affects. Based on the action position of the pesticide, determine the environmental parameters of the action position of the pesticide during the action time of the pesticide on the weather forecast platform and calibrate them as target environmental parameters.

[0060] Marking the crops that the pesticide acts on as target crops, obtaining a big data network, searching the big data network for the types of pesticides that can act on the target crops, marking them as the types of pesticides to be selected, and obtaining delivery order information of the target crops, analyzing the delivery order information of the target crops, and determining the target delivery status of the target crops;

[0061] The target delivery state of the target crop includes the surface smoothness, volume, weight and moisture content of the target crop when it is delivered;

[0062] In the big data network, the historical states of the target crop after all the selected pesticide types acted on the target crop at different concentrations are retrieved, and the corresponding selected pesticide type and the corresponding concentration whose historical state of the target crop has the greatest similarity with the target delivery state of the target crop are selected, and are marked as the target pesticide type and the target pesticide concentration respectively;

[0063] Pesticides of the target pesticide type and the target pesticide concentration are calibrated as target pesticides, and film materials that can be used to cover target crops based on the target environmental parameter type and the target pesticide are retrieved in the big data network and calibrated as target film materials.

[0064] It should be noted that the slow-release pesticide can be coated with a layer of controlled-release membrane on the surface of the pesticide, which can be a porous membrane or a semi-permeable membrane, etc., to control the release rate and release time of the pesticide to achieve a slow-release or controlled-release effect. Before the slow-release pesticide is applied to vegetation, the type of pesticide and the corresponding concentration need to be determined according to the crops that the pesticide acts on, because the types and concentrations of pesticides used for different crops are different. At the same time, when acting on the same crop, different environmental parameters will also affect the effect of the pesticide, so the environmental parameters at the location where the pesticide acts need to be considered at the same time. A database in the big data network stores a variety of pesticide preparation schemes. Based on the big data network, combined with environmental parameters and the type of target crop, the type of pesticide to be selected is retrieved. There are many types of pesticides to be selected. Different types of pesticides have different effects on crops. Since crops need to be delivered to customers, the delivery status of crops varies according to customer requirements. Different types and concentrations of pesticides will affect the delivery status of crops. Therefore, the delivery status of target crops under different types and concentrations of pesticides can be retrieved in the big data network, and the corresponding pesticide type and concentration output closest to the target delivery status can be selected, that is, the target pesticide type and target pesticide concentration. The membrane material is the controlled release membrane covered on the surface of the pesticide. Commonly used materials include ethylene-vinyl acetate copolymer (EVA), polyurethane, polyester, etc. The pore size, thickness and material properties of the controlled release membrane determine the diffusion rate of the pesticide, thereby controlling the release rate. Different types of pesticides correspond to different optimal membrane materials, so the membrane material that can be used to coat the target crop based on the target environmental parameter type and the target pesticide is retrieved in the big data network, that is, the target membrane material.

[0065] Furthermore, in a preferred embodiment of the present invention, the target pesticide is pretreated, and a coating solution is prepared based on the target membrane material to obtain a coated pesticide solution, specifically:

[0066] Introducing a pesticide preparation device, wherein the pesticide preparation device can pre-treat the target pesticide, wherein the pre-treating of the target pesticide includes stirring, crushing, filtering, drying the target pesticide, and mixing and dissolving the target membrane material with an organic solvent;

[0067] Based on the big data network, historical data on the reaction rate between target pesticides and target crops at different volumes are retrieved, and the volume of the target pesticide corresponding to the fastest reaction rate is calibrated as the target volume;

[0068] Introducing the target pesticide into the pesticide preparation equipment, and presetting a target volume instruction in the pesticide preparation equipment, wherein the presetting target volume instruction in the pesticide preparation equipment controls the pesticide preparation equipment to stir and crush the target pesticide to a volume equal to the target volume;

[0069] The target pesticide is stirred, crushed and filtered using the pesticide preparation equipment after the preset target volume instruction to obtain target pesticide particles, and the target pesticide particles are dried until the moisture content in the target pesticide particles is equal to zero to obtain dry pesticide particles.

[0070] It should be noted that pesticide preparation equipment is a device that can pre-treat pesticides and mix and dissolve target film materials with organic solvents. Pesticides need to be stirred and crushed. When they are stirred and crushed into small particles, they act on target crops. Due to their small volume and large number, the rate of action is faster and the range of action is wider, so the efficiency is greater than before crushing, so the target pesticides need to be stirred and crushed. The volume of stirring and crushing needs to be determined according to the reaction rate between the target pesticide and the target crop at different volume sizes. It is not the case that the smaller the volume, the faster the reaction rate. After determining the target volume, the target pesticide is stirred and crushed by the pesticide preparation equipment to obtain the target pesticide particles. Drying the target pesticide particles can improve the coating efficiency, because if there is moisture during the coating process, it will affect the coating integrity.

[0071] Further, in a preferred embodiment of the present invention, the organic solvent is obtained, and the organic solvent and the target film material are pretreated by a pesticide preparation device to obtain a coated pesticide solution, specifically:

[0072] Retrieve all organic solvent types that can dissolve the target membrane material in the big data network and mark them as the organic solvent types to be selected;

[0073] Adding target film material samples to organic solvents of different types of organic solvents to be selected respectively, and continuously stirring using pesticide preparation equipment to obtain a mixed solution of the organic solvent and the target film material sample, which is calibrated as a test film material mixed solution, wherein the test film material mixed solution contains a polymer of organic matter in the organic solvent and the target film material sample, which is calibrated as a test polymer;

[0074] When the pesticide preparation equipment is used for continuous stirring, the dissolution efficiency of the test polymer in the test film material mixed solution is monitored in real time, and the type of organic solvent to be selected corresponding to the test film material mixed solution with the greatest dissolution efficiency is calibrated as the target organic solvent type;

[0075] The target membrane material is added to an organic solvent of the target organic solvent type, and the mixture is continuously stirred using a pesticide preparation device to obtain a target membrane material mixed solution, which is named a coated pesticide solution.

[0076] It should be noted that the membrane material cannot be directly coated on the pesticide particles. The membrane material needs to be dissolved with an organic solvent before it can be coated on the pesticide particles. There are many types of organic solvents that can dissolve the membrane material, and a suitable organic solvent needs to be selected. Sampling monitoring is required to determine the selection of different organic solvents. The same target membrane material is added to different types of organic solvents. The target membrane material and the organic solvent are melted to form a polymer. The dissolution efficiency of the polymer reflects the degree of matching between the target membrane material and the organic solvent. The higher the dissolution efficiency of the polymer, the less target membrane material needs to be consumed, which helps to reduce resource waste. Therefore, the corresponding organic solvent type with the highest polymer dissolution efficiency is selected for output, and the mixture of the target membrane material and the organic solvent under the target organic solvent type is continuously stirred through the pesticide preparation equipment to obtain a coated pesticide solution.

[0077] Figure 2 A flow chart of a method for preparing qualified dry coated pesticide particles is shown, comprising the following steps:

[0078] S202: coating the dried pesticide particles with a pesticide solution by a fluidized bed device;

[0079] S204: controlling the thickness of the surface film layer of the dry pesticide particles after being sprayed with the coating pesticide solution, and vacuum drying the coated pesticide particles;

[0080] S206: performing a release rate simulation test on the dry coated pesticide particles, and screening the dry coated pesticide particles after the release rate simulation test to obtain qualified dry coated pesticide particles.

[0081] Furthermore, in a preferred embodiment of the present invention, the dry pesticide particles are coated with the pesticide solution by a fluidized bed device, specifically:

[0082] Obtain a fluidized bed device, wherein the fluidized bed device includes a sprayer, a pesticide coating device, and a vacuum dryer, wherein the pesticide coating device can generate an airflow to suspend dry pesticide particles, the sprayer can evenly spray the coating pesticide solution onto the suspended dry pesticide particles, and the vacuum dryer can perform vacuum drying on the dry pesticide particles sprayed with the coating pesticide solution;

[0083] Dry pesticide particles are placed in the pesticide coating equipment of the fluidized bed device, and a coating pesticide solution is placed in the sprayer of the fluidized bed device. The fluidized bed device is operated, and the sprayer is controlled by the fluidized bed device to spray the coating pesticide solution onto the dry pesticide particles suspended in the pesticide coating equipment of the fluidized bed device.

[0084] It should be noted that the method used in the fluidized bed device is a fluidized bed coating method, which can suspend the pesticide particles through the airflow so that their surface can be evenly contacted with the coating solution, and the coating pesticide solution is evenly sprayed on the suspended dry pesticide particles through a sprayer, and the solvent evaporates rapidly in the airflow to form a uniform coating film. The dry pesticide particles need to be continuously coated multiple times to achieve the required film thickness and release rate.

[0085] Furthermore, in a preferred embodiment of the present invention, the thickness of the surface film layer of the dry pesticide particles after being sprayed with the coated pesticide solution is controlled, and the coated pesticide particles are vacuum dried, specifically:

[0086] A standard thickness threshold of the surface film layer of the dry pesticide particles after the dry pesticide particles are sprayed with the coating pesticide solution is preset, calibrated as the standard thickness threshold of the surface film layer, and the spraying rate, spraying amount and spraying range of the sprayer of the fluidized bed device when spraying the coating pesticide solution;

[0087] Based on the target volume of the dry pesticide particles, and the spraying rate, spraying amount and spraying range of the sprayer of the fluidized bed device when spraying the coated pesticide solution, the real-time thickness of the surface film layer of the dry pesticide particles is calculated in real time and calibrated as the real-time thickness of the surface film layer;

[0088] When the real-time thickness of the surface film layer is within the standard thickness threshold of the surface film layer, the sprayer controlled by the fluidized bed device is stopped from spraying the coated pesticide solution onto the dry pesticide particles suspended in the pesticide coating equipment of the fluidized bed device to obtain coated pesticide particles, and the coated pesticide particles are vacuum dried using a vacuum dryer to obtain dry coated pesticide particles.

[0089] It should be noted that during the continuous multiple coating process of the dry pesticide particles, when the real-time thickness of the surface film layer of the dry pesticide particles reaches the standard threshold, it is necessary to stop coating them. The spraying rate, spraying amount and spraying range of the fluidized bed device sprayer when spraying the coated pesticide solution are determined. Different spraying rates, spraying amounts and spraying ranges, combined with different target volumes of dry pesticide particles, can calculate the thickness of the surface film layer, and after stopping the spraying of the coated pesticide solution, it is necessary to use a vacuum dryer to vacuum dry the coated pesticide particles, in order to further remove the residual solvent and ensure that the film layer is completely solidified to facilitate its role in the pesticide.

[0090] Furthermore, in a preferred embodiment of the present invention, the release rate simulation test is performed on the dry coated pesticide particles, and the finished product screening is performed on the dry coated pesticide particles after the release rate simulation test to obtain qualified dry coated pesticide particles, specifically:

[0091] The dried coated pesticide particles are classified into batches, and random sampling is performed on the dried coated pesticide particles in different batches to obtain dried coated pesticide particle samples;

[0092] Retrieve a method for preparing a solution simulating a target crop planting environment based on target environmental parameters and a target delivery state of a target crop in a big data network, and prepare a solution that can simulate a target crop planting environment based on the method for preparing a solution simulating a target crop planting environment, and mark it as a simulated test release solution;

[0093] The standard time for the dry coated pesticide particles to act on the target crops is preset and calibrated as the target action time. In combination with the target action time and the target delivery state of the target crops, the ratio of the dry coated pesticide particles to the simulated test release solution is calculated and calibrated as the standard ratio.

[0094] Obtain a constant temperature shaker, and place the dried coated pesticide particles into a simulated test release solution under a standard ratio through the constant temperature shaker to obtain a controlled-release pesticide solution to be analyzed;

[0095] Preset different concentration values ​​that the pesticide in the slow-release pesticide solution to be analyzed needs to reach, calibrate them as a type of target concentration, and preset the pesticide release monitoring time. Preset the standard consumption time threshold when the pesticide in the slow-release pesticide solution to be analyzed reaches a type of target concentration within the pesticide release monitoring time, and calibrate it as the target consumption time threshold;

[0096] During the pesticide release monitoring time, the real-time concentration of the pesticide in the slow-release pesticide solution to be analyzed is measured by a UV-visible photometer, and the time consumed when the real-time concentration of the pesticide is equal to the first-class target concentration is recorded and calibrated as the real-time consumption time;

[0097] It is determined whether the real-time consumption time is maintained within the target consumption time threshold. If so, the corresponding batch of dry coated pesticide particles are calibrated as qualified dry coated pesticide particles. If not, the corresponding batch of dry coated pesticide particles are calibrated as unqualified dry coated pesticide particles.

[0098] It should be noted that due to the large amount of pesticide particles, the pesticide particles need to be batch-classified, and the yield of different batches of pesticide particles may be different, so it is necessary to sample and test different batches of dry coated pesticide particles to detect whether their release rate in crops meets the preset conditions, and screen and obtain qualified dry coated pesticide particles after testing. The simulated test release solution is a solution that simulates the field environment, usually made of water, phosphate buffer, etc. Within a certain time, combined with the target delivery state of the target crop, the ratio of dry coated pesticide particles to the simulated test release solution can be obtained, and the ratio is different for different delivery states. After obtaining the target ratio, the dry coated pesticide particles are fused with the simulated test release solution based on the target ratio, and the fusion scene is located in a constant temperature shaker. The constant temperature shaker is a device that can maintain a stable temperature and shaking speed, which is used to simulate the diffusion process of pesticides in the environment, and can realize the integration of dry coated pesticide particles into the simulated test release solution. After integration, a controlled-release pesticide solution to be analyzed is obtained. Since integration takes time, the concentration of pesticides in the solution changes in real time during the integration process. The change in pesticide concentration reflects the rate at which the dry coated pesticide particles act on crops. The faster the concentration changes, the faster the rate at which the dry coated pesticide particles act on crops. According to the relationship between the real-time consumption time and the target consumption time threshold, the release rate of the pesticide can be judged, and the corresponding dry coated pesticide particles whose real-time consumption time is maintained at the target consumption time threshold are selected for output to obtain qualified dry coated pesticide particles. The function of the UV-Visible photometer is to measure the concentration of pesticides in the sample at each time point.

[0099] like Figure 3 As shown, the present invention also provides a preparation device for a sustained-release pesticide, characterized in that the preparation device comprises:

[0100] Data retrieval module 301, which is used to retrieve usage and processing schemes of all materials used to prepare slow-release pesticides;

[0101] A pesticide preparation module 302, which can stir, crush, filter, dry, and mix and dissolve the target film material with an organic solvent;

[0102] A pesticide fluidized spraying module 303, which includes a sprayer, a pesticide coating device and a vacuum dryer, and is used to evenly spray the coated pesticide solution into the dry pesticide particles and perform vacuum drying;

[0103] A constant temperature shaker preparation module 304, which is used to prepare a slow-release pesticide solution to be analyzed and simulate the diffusion process of the pesticide in the environment;

[0104] The data processing module 305 includes a memory and a processor. The processor analyzes and processes the data obtained by each module, and the memory can store the data of each module.

[0105] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for preparing and controlling a slow-release pesticide, It is characterized in that The following steps are involved: Determine the type and concentration of pesticides, and select membrane materials based on the type and concentration of pesticides; Pre-treating the target pesticide, and preparing a coating solution based on the target membrane material to obtain a coated pesticide solution; The coated pesticide solution is coated on the dry pesticide particles multiple times based on the fluidized bed device, and the release rate of the finished pesticide products after multiple coatings is tested. The finished pesticide products after multiple coatings are screened based on the release rate test results to obtain qualified dry coated pesticide particles.

2. According to the method for preparing a sustained-release pesticide as described in claim 1, It is characterized in that The method of determining the type and concentration of the pesticide and selecting the membrane material based on the type and concentration of the pesticide is as follows: Determine the action position of the pesticide and the crops that the pesticide affects. Based on the action position of the pesticide, determine the environmental parameters of the action position of the pesticide during the action time of the pesticide on the weather forecast platform and calibrate them as target environmental parameters. Marking the crops that the pesticide acts on as target crops, obtaining a big data network, searching the big data network for the types of pesticides that can act on the target crops, marking them as the types of pesticides to be selected, and obtaining delivery order information of the target crops, analyzing the delivery order information of the target crops, and determining the target delivery status of the target crops; The target delivery state of the target crop includes the surface smoothness, volume, weight and moisture content of the target crop when it is delivered; In the big data network, the historical states of the target crop after all the selected pesticide types acted on the target crop at different concentrations are retrieved, and the corresponding selected pesticide type and the corresponding concentration whose historical state of the target crop has the greatest similarity with the target delivery state of the target crop are selected, and are marked as the target pesticide type and the target pesticide concentration respectively; Pesticides of the target pesticide type and the target pesticide concentration are calibrated as target pesticides, and film materials that can be used to cover target crops based on the target environmental parameter type and the target pesticide are retrieved in the big data network and calibrated as target film materials.

3. According to the method for preparing a sustained-release pesticide as described in claim 1, It is characterized in that The target pesticide is pretreated, and a coating solution is prepared based on the target membrane material to obtain a coated pesticide solution, specifically: Introducing a pesticide preparation device, wherein the pesticide preparation device can pre-treat the target pesticide, wherein the pre-treating of the target pesticide includes stirring, crushing, filtering, drying the target pesticide, and mixing and dissolving the target membrane material with an organic solvent; Based on the big data network, historical data on the reaction rate between target pesticides and target crops at different volumes are retrieved, and the volume of the target pesticide corresponding to the fastest reaction rate is calibrated as the target volume; Introducing the target pesticide into the pesticide preparation equipment, and presetting a target volume instruction in the pesticide preparation equipment, wherein the presetting target volume instruction in the pesticide preparation equipment controls the pesticide preparation equipment to stir and crush the target pesticide to a volume equal to the target volume; Using the pesticide preparation equipment with preset target volume instructions, the target pesticide is stirred, crushed and filtered to obtain target pesticide particles, and the target pesticide particles are dried until the moisture content in the target pesticide particles is equal to zero to obtain dry pesticide particles; An organic solvent is obtained, and the organic solvent and a target membrane material are pretreated by a pesticide preparation device to obtain a coated pesticide solution.

4. A method for preparing a sustained-release pesticide according to claim 3, It is characterized in that The organic solvent is obtained, and the organic solvent and the target film material are pretreated by a pesticide preparation device to obtain a coated pesticide solution, specifically: Retrieve all organic solvent types that can dissolve the target membrane material in the big data network and mark them as the organic solvent types to be selected; Adding target film material samples to organic solvents of different types of organic solvents to be selected respectively, and continuously stirring using pesticide preparation equipment to obtain a mixed solution of the organic solvent and the target film material sample, which is calibrated as a test film material mixed solution, wherein the test film material mixed solution contains a polymer of organic matter in the organic solvent and the target film material sample, which is calibrated as a test polymer; When the pesticide preparation equipment is used for continuous stirring, the dissolution efficiency of the test polymer in the test film material mixed solution is monitored in real time, and the type of organic solvent to be selected corresponding to the test film material mixed solution with the greatest dissolution efficiency is calibrated as the target organic solvent type; The target membrane material is added to an organic solvent of the target organic solvent type, and the mixture is continuously stirred using a pesticide preparation device to obtain a target membrane material mixed solution, which is named a coated pesticide solution.

5. According to the method for preparing a sustained-release pesticide as described in claim 1, It is characterized in that The method of coating the coated pesticide solution on the dry pesticide particles multiple times based on the fluidized bed device, and performing a release rate test on the finished pesticide products after multiple coatings, and screening the finished pesticide products after multiple coatings based on the release rate test results to obtain qualified dry coated pesticide particles, specifically: Obtain a fluidized bed device, wherein the fluidized bed device includes a sprayer, a pesticide coating device, and a vacuum dryer, wherein the pesticide coating device can generate an airflow to suspend dry pesticide particles, the sprayer can evenly spray the coating pesticide solution onto the suspended dry pesticide particles, and the vacuum dryer can perform vacuum drying on the dry pesticide particles sprayed with the coating pesticide solution; Putting dry pesticide particles in the pesticide coating device of the fluidized bed device, and putting a coating pesticide solution in the sprayer of the fluidized bed device, operating the fluidized bed device, and controlling the sprayer based on the fluidized bed device to spray the coating pesticide solution onto the dry pesticide particles suspended in the pesticide coating device of the fluidized bed device; A standard thickness threshold of the surface film layer of the dry pesticide particles after the dry pesticide particles are sprayed with the coating pesticide solution is preset, calibrated as the standard thickness threshold of the surface film layer, and the spraying rate, spraying amount and spraying range of the sprayer of the fluidized bed device when spraying the coating pesticide solution; Based on the target volume of the dry pesticide particles, and the spraying rate, spraying amount and spraying range of the sprayer of the fluidized bed device when spraying the coated pesticide solution, the real-time thickness of the surface film layer of the dry pesticide particles is calculated in real time and calibrated as the real-time thickness of the surface film layer; When the real-time thickness of the surface film layer is within the standard thickness threshold of the surface film layer, the sprayer is controlled by the fluidized bed device to spray the coated pesticide solution onto the dry pesticide particles suspended in the pesticide coating device of the fluidized bed device to obtain coated pesticide particles, and the coated pesticide particles are vacuum dried by a vacuum dryer to obtain dry coated pesticide particles; The dry coated pesticide particles are subjected to a release rate simulation test, and after the release rate simulation test, the dry coated pesticide particles are screened as finished products to obtain qualified dry coated pesticide particles.

6. A method for preparing and controlling a sustained-release pesticide according to claim 5, It is characterized in that The release rate simulation test is performed on the dry coated pesticide particles, and the finished product screening is performed on the dry coated pesticide particles after the release rate simulation test to obtain qualified dry coated pesticide particles, specifically: The dried coated pesticide particles are classified into batches, and random sampling is performed on the dried coated pesticide particles in different batches to obtain dried coated pesticide particle samples; Retrieve a method for preparing a solution simulating a target crop planting environment based on target environmental parameters and a target delivery state of a target crop in a big data network, and prepare a solution that can simulate a target crop planting environment based on the method for preparing a solution simulating a target crop planting environment, and mark it as a simulated test release solution; The standard time for the dry coated pesticide particles to act on the target crops is preset and calibrated as the target action time. In combination with the target action time and the target delivery state of the target crops, the ratio of the dry coated pesticide particles to the simulated test release solution is calculated and calibrated as the standard ratio. Obtain a constant temperature shaker, and place the dried coated pesticide particles into a simulated test release solution under a standard ratio through the constant temperature shaker to obtain a controlled-release pesticide solution to be analyzed; Preset different concentration values ​​that the pesticide in the slow-release pesticide solution to be analyzed needs to reach, calibrate them as a type of target concentration, and preset the pesticide release monitoring time. Preset the standard consumption time threshold when the pesticide in the slow-release pesticide solution to be analyzed reaches a type of target concentration within the pesticide release monitoring time, and calibrate it as the target consumption time threshold; During the pesticide release monitoring time, the real-time concentration of the pesticide in the slow-release pesticide solution to be analyzed is measured by a UV-visible photometer, and the time consumed when the real-time concentration of the pesticide is equal to the first-class target concentration is recorded and calibrated as the real-time consumption time; It is determined whether the real-time consumption time is maintained within the target consumption time threshold. If so, the corresponding batch of dry coated pesticide particles are calibrated as qualified dry coated pesticide particles. If not, the corresponding batch of dry coated pesticide particles are calibrated as unqualified dry coated pesticide particles.

7. A device for preparing a slow-release pesticide, It is characterized in that The preparation device comprises: A data retrieval module, which is used to retrieve usage and processing schemes of all materials used to prepare slow-release pesticides; A pesticide preparation module, which can stir, crush, filter, dry, and mix and dissolve the target membrane material with an organic solvent; A pesticide fluidized spraying module, comprising a sprayer, a pesticide coating device and a vacuum dryer, for uniformly spraying the coated pesticide solution into the dry pesticide particles and performing vacuum drying; A constant temperature shaker preparation module, which is used to prepare a slow-release pesticide solution to be analyzed and simulate the diffusion process of the pesticide in the environment; The data processing module includes a memory and a processor. The processor analyzes and processes the data obtained by each module, and the memory can store the data of each module.

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