Intelligent coloring device for seed pelleting coating

Abstract

The invention relates to the technical field of seed processing treatment, in particular to an intelligent coloring device for seed pelleting coating, comprising: a rotating unit comprising a rotary drum, a rotary disk, a first driving motor, a feed inlet, stirring blades and a second driving motor; comprising an atomizing nozzle, a material storage box, a material conveying pipe, a swinging pipe, a third driving motor, a driving wheel, a driven wheel and a bearing; comprising a first image acquisition unit and a second image acquisition unit; the initial parameter determination module is used for determining a coloring mode of the coloring device according to the morphological characteristic value of the pelletized seed and determining a corresponding operation strategy; and the control module is used for carrying out secondary judgment according to the shedding rate of the coloring agent when the coloring of the pelletized seeds is judged not to meet the preset standard according to the surface gray scale standard deviation, or determining the reason for the coloring not meeting of the pelletized seeds according to the droplet atomization characterization value of the coloring agent, so that the coloring efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of seed processing, and in particular to an intelligent coloring device for seed pelleting and coating. Background Art

[0002] Seed pelleting is an agricultural high-tech technology developed on the basis of seed coating technology to meet the needs of fine sowing. It refers to the use of special pelleting materials through mechanical processing to produce pelletized seeds with smooth surface, uniform size and enlarged particles.

[0003] Coloring of pelletized seeds is an important step in the seed pelleting process. The main purpose of coloring pelletized seeds is to increase seed recognition and improve sowing efficiency. By coloring the seeds, it is easier to distinguish different types of seeds and avoid confusion during sowing. The process of coloring pelletized seeds is usually carried out after pelleting. Specifically, the pelletized seeds are sent to the coloring equipment, and the dye is evenly applied to the surface of the seeds by spraying or dipping, which has multiple advantages such as increasing seed recognition, improving sowing efficiency and facilitating management. However, uneven stirring is easily caused during the dyeing process, resulting in some seeds not being fully exposed to the dye.

[0004] Chinese patent publication number: CN109451918A, discloses a seed coating pelletizing and coloring device, including: a frame, a control unit, at least one feeding unit, a coating pelletizing unit, a coloring unit and two air pumps; the frame is fixed to the ground, the control unit is installed on the frame, the feeding unit, the coating pelletizing unit, the coloring unit and the air pump are arranged on the frame in order from top to bottom, and cooperate with the control unit to perform seed coating pelletizing and coloring.

[0005] It can be seen that the above technical solution does not consider the influence of the pelletized seed size characteristics on the coloring uniformity, and does not consider the influence of the atomization quality and the coloring coating strength on the coloring effect, which leads to the problem of poor coloring effect. Summary of the invention

[0006] To this end, the present invention provides an intelligent coloring device for seed pelleting coating, which is used to overcome the problem that the prior art does not consider the influence of pelletized seed size characteristics on coloring uniformity, and does not consider the influence of atomization quality and coloring coating intensity on coloring effect, thereby resulting in poor coloring effect.

[0007] To achieve the above object, the present invention provides an intelligent coloring device for seed pelleting coating, comprising:

[0008] The rotating unit includes a rotating drum, a rotating disk arranged at the bottom of the rotating drum, a first driving motor for driving the rotating disk to rotate through a driving shaft, a feeding port communicated with the upper side wall of the rotating drum, a stirring blade arranged at the top of the rotating drum, and a second driving motor for driving the stirring blade to rotate;

[0009] A spraying unit, comprising a plurality of atomizing nozzles, a material storage box for storing colorants, a material delivery pipe, a swing pipe, a third driving motor, a driving wheel, a driven wheel, and a bearing, wherein the material storage box is arranged on the top of a rotary drum, one end of the material delivery pipe is connected to the material storage box, the other end of the material delivery pipe is connected to the swing pipe, the bearings are symmetrically embedded in the inner wall of the rotary drum, a plurality of atomizing nozzles are evenly distributed on the surface of the upper swing pipe, both ends of the swing pipe are installed in the rotary drum through bearings, the third driving motor is installed on the side wall of the rotary drum, one end of the driving wheel is installed with a driving wheel, one end of the swing pipe is provided with a driven wheel, and the third driving motor drives the swing pipe to rotate through the meshing of the driving wheel and the driven wheel;

[0010] The data acquisition module includes a first image acquisition unit disposed at the top of the rotating drum to acquire a colored image of the pelletized seeds, and a second image acquisition unit disposed on the side wall of the rotating drum to acquire a droplet image of the colorant;

[0011] an initial parameter determination module, which is respectively connected to the data acquisition module, the first drive motor, the second drive motor and the third drive motor, and is used to determine the coloring mode of the coloring device and the corresponding operation strategy according to the morphological characteristic values ​​of the pelletized seeds;

[0012] A control module is respectively connected to the data acquisition module, the second drive motor and the initial parameter determination module, and is used to determine whether the coloring of the pelletized seeds does not meet the preset standard based on the surface grayscale standard deviation, and to make a secondary judgment based on the shedding rate of the colorant, or to determine the reason why the coloring of the pelletized seeds does not meet the preset standard based on the droplet atomization characterization value of the colorant.

[0013] Furthermore, the initial parameter determination module determines the coloring mode of the coloring device according to the morphological characteristic values ​​of the pelletized seeds, wherein:

[0014] If the morphological feature value is less than the first preset morphological threshold, the initial parameter determination module determines to use the first coloring mode to color the pelletized seeds;

[0015] If the morphological feature value is greater than or equal to the first preset morphological threshold and less than the second preset morphological threshold, the initial parameter determination module determines to use the second coloring mode to color the pelletized seeds;

[0016] If the morphological feature value is greater than or equal to the second preset morphological threshold, the initial parameter determination module determines to use the third coloring mode to color the pelletized seeds.

[0017] Furthermore, the morphological characteristic value is determined by the aspect ratio and the perimeter standard deviation.

[0018] Furthermore, the initial parameter determination module determines the corresponding operation strategy based on the coloring mode, wherein:

[0019] If the coloring mode is the first coloring mode, the initial parameter determination module controls the turntable to rotate;

[0020] If the coloring mode is the second coloring mode, the initial parameter determination module controls the turntable and the stirring blade to rotate;

[0021] If the coloring mode is the third coloring mode, the initial parameter determination module controls the turntable to rotate, the stirring blades to rotate, and the atomizing nozzle to change from direct injection to swing.

[0022] Further, the control module determines that the coloring of the pelletized seeds does not meet a preset standard in response to the surface grayscale standard deviation being greater than or equal to a first preset surface grayscale standard deviation, wherein the surface grayscale standard deviation passes.

[0023] Further, the control module secondarily determines whether the coloring of the pelletized seeds meets the preset standard according to the shedding rate of the colorant under the condition that the surface grayscale standard deviation is greater than or equal to the first preset grayscale standard deviation and less than the second preset surface grayscale standard deviation, and,

[0024] The control module determines the reason why the coloring of the pelletized seeds is not in compliance with the requirements according to the droplet atomization characterization value of the colorant under the condition that the surface grayscale standard deviation is greater than or equal to the second preset grayscale standard deviation.

[0025] Furthermore, in response to the colorant shedding rate being greater than or equal to a preset shedding rate, the control module secondarily determines that the coloring of the pelletized seeds does not meet a preset standard, and increases the coloring time according to the difference between the shedding rate and the preset shedding rate.

[0026] Furthermore, the shedding rate of the colorant is determined by the weight of the colored pelletized seeds and the weight of the colored pelletized seeds after simulated abrasion.

[0027] Furthermore, the control module determines the reasons for the non-conformity in coloring of the pelletized seeds based on the droplet atomization characterization value, including insufficient rotation speed of the stirring blade and increasing the rotation speed of the stirring blade, or clogging of the atomizing nozzle and issuing an early warning; the droplet atomization characterization value is determined by the droplet particle size of the colorant.

[0028] Furthermore, the increase in the rotation speed of the stirring blade is positively correlated with the droplet atomization difference, wherein the droplet atomization difference is the difference between a preset droplet atomization characterization value and the droplet atomization characterization value.

[0029] Compared with the prior art, the beneficial effect of the present invention lies in that, before coloring, the present invention dynamically divides the coloring mode based on the aspect ratio and the circumference standard deviation of the pelletized seeds, and automatically matches the coordinated actions of the rotary drum, stirring blades and atomizing nozzles for pelletized seeds of different sizes and shapes, thereby solving the problem that traditional devices use the same coloring parameters for seeds of different shapes and improving the adaptability of the device; the coloring is checked for uniformity based on the surface grayscale standard deviation and the colorant shedding rate; the droplet atomization characterization value is introduced to quickly locate the cause of substandard coloring, thereby improving the coloring efficiency and thus improving the coloring effect.

[0030] Furthermore, the present invention uses the surface grayscale standard deviation and the colorant shedding rate to perform a double judgment on whether the coloring of the pellet machine meets the preset standard, thereby reducing the misjudgment rate and improving the reliability of the evaluation.

[0031] Furthermore, the present invention shortens the troubleshooting time by determining insufficient stirring speed or nozzle clogging fault according to the droplet atomization characterization value.

[0032] Furthermore, the present invention reduces manual intervention and enhances the adaptability of the device by dividing the coloring modes into three categories according to the morphological characteristics of the pelletized seeds, thereby improving the coloring efficiency of the device.

[0033] Furthermore, the present invention provides a morphological characteristic value, which is determined by the aspect ratio and the perimeter standard deviation, to quantify the regularity of seed shape and the discreteness of size distribution, thereby improving the accuracy of evaluation.

[0034] Furthermore, the present invention realizes precise control of the increase range of the rotation speed of the stirring blade by setting the increase range of the rotation speed of the stirring blade to be positively correlated with the droplet atomization difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of an intelligent coloring device for seed pelleting coating according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of module connections of an intelligent coloring device for seed pelleting and coating according to an embodiment of the present invention;

[0037] Figure 3 A flowchart for determining a coloring mode of a coloring device according to an embodiment of the present invention;

[0038] Figure 4 A flow chart of an embodiment of the present invention for determining whether the coloring of pelletized seeds meets a preset standard;

[0039] In the figure, 11, rotating drum; 12, rotating plate; 13, first driving motor; 14, feeding port; 15, stirring blade; 16, second driving motor; 21, atomizing nozzle; 22, storage box; 23, feeding pipe; 24, swing pipe; 25, third driving motor; 26, driving wheel; 27, driven wheel; 28, bearing. DETAILED DESCRIPTION

[0040] 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 only used to explain the present invention and are not used to limit the present invention.

[0041] 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 protection scope of the present invention.

[0042] It should be pointed out that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical test data of the present invention three months before this test and the corresponding historical test results. It can be understood by those skilled in the art that the method of 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 according to 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 method of the present invention can clearly define the different specific situations in the single determination process through the obtained values.

[0043] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, they are respectively embodiments of the present invention.

[0044] The embodiment of the present invention provides an intelligent coloring device for seed pelleting coating, comprising:

[0045] The rotating unit includes a rotating drum 11, a rotating disk 12 disposed at the bottom of the rotating drum 11, a first driving motor 13 driving the rotating disk 12 to rotate through a driving shaft, a feeding port 14 communicating with the upper side wall of the rotating drum 11, a stirring blade 15 disposed at the top of the rotating drum 11, and a second driving motor 16 for driving the stirring blade 15 to rotate;

[0046] A spraying unit, which includes a plurality of atomizing nozzles 21, a storage box 22 for storing colorants, a feed pipe 23, a swing pipe 24, a third driving motor 25, a driving wheel 26, a driven wheel 27, and a bearing 28, wherein the storage box 22 is arranged on the top of the rotary drum 11, one end of the feed pipe 23 is connected to the storage box 22, and the other end of the feed pipe 23 is connected to the swing pipe 24, the bearing 28 is symmetrically embedded in the inner wall of the rotary drum 11, a plurality of atomizing nozzles 21 are evenly distributed on the surface of the upper swing pipe 24, both ends of the swing pipe 24 are installed in the rotary drum 11 through bearings 28, the third driving motor 25 is installed on the side wall of the rotary drum 11, one end of the driving wheel 26 is installed with the driving wheel 26, one end of the swing pipe 24 is provided with the driven wheel 27, and the third driving motor 25 drives the swing pipe 24 to rotate through the engagement of the driving wheel 26 with the driven wheel 27;

[0047] The data acquisition module includes a first image acquisition unit disposed at the top of the rotating drum 11 to acquire the image of the pelletized seeds after coloring, and a second image acquisition unit disposed on the side wall of the rotating drum 11 to acquire the image of the droplets of the colorant;

[0048] an initial parameter determination module, which is connected to the data acquisition module, the first drive motor 13, the second drive motor 16 and the third drive motor 25, respectively, and is used to determine the coloring mode of the coloring device and the corresponding operation strategy according to the morphological characteristic values ​​of the pelletized seeds;

[0049] A control module is respectively connected to the data acquisition module, the second drive motor 16 and the initial parameter determination module, and is used to determine whether the coloring of the pelletized seeds does not meet the preset standard based on the surface grayscale standard deviation, and to make a secondary judgment based on the shedding rate of the colorant, or to determine the reason why the coloring of the pelletized seeds does not meet the preset standard based on the droplet atomization characterization value of the colorant.

[0050] In this embodiment, the first image acquisition unit for acquiring the colored image of the pelletized seeds may be an industrial camera; the second image acquisition unit for acquiring the image of the droplet of the colorant may be a high-speed microscope camera;

[0051] Specifically, there is no limitation on the specific structure of the initial parameter determination module and the control module, and the initial parameter determination module and the control module themselves and the units therein can be composed of logic components, and the logic components include field programmable components, computers or microprocessors in computers.

[0052] Specifically, the initial parameter determination module determines the coloring mode of the coloring device according to the morphological characteristic values ​​of the pelletized seeds, wherein:

[0053] If the morphological feature value is less than the first preset morphological threshold value of 0.62, the initial parameter determination module determines to use the first coloring mode to color the pelletized seeds;

[0054] If the morphological feature value is greater than or equal to the first preset morphological threshold value and less than the second preset morphological threshold value of 1.25, the initial parameter determination module determines to use the second coloring mode to color the pelletized seeds;

[0055] If the morphological feature value is greater than or equal to the second preset morphological threshold, the initial parameter determination module determines to use the third coloring mode to color the pelletized seeds.

[0056] Specifically, the morphological feature value is jointly determined by the aspect ratio and the standard deviation of the perimeter. In this embodiment, an industrial camera is used to obtain the pelletized seed image before coloring, and image processing software is used to obtain the aspect ratio and perimeter of each pelletized seed before coloring. The image processing software can be OpenCV, and there is no specific limitation. It only needs to meet the requirements of identifying the seed outline in the image and analyzing and calculating the aspect ratio and perimeter.

[0057] The morphological characteristic value is calculated by the following formula:

[0058] P=α×R+β×σ

[0059] In the formula, P represents the morphological feature value; α represents the aspect ratio weight, α = 0.6; R represents the aspect ratio; β represents the perimeter standard deviation weight, β = 0.4; σ represents the perimeter standard deviation;

[0060] Specifically, the initial parameter determination module determines the corresponding operation strategy based on the coloring mode, where:

[0061] If the coloring mode is the first coloring mode, the initial parameter determination module controls the turntable 12 to rotate;

[0062] If the coloring mode is the second coloring mode, the initial parameter determination module controls the turntable 12 and the stirring blade 15 to rotate;

[0063] If the coloring mode is the third coloring mode, the initial parameter determination module controls the turntable 12 to rotate, the stirring blade 15 to rotate, and the atomizing nozzle 21 to change from direct injection to swing.

[0064] The third driving motor 25 is powered off, the swing tube 24 is kept stationary by the self-locking mechanism, and the atomizing nozzle 21 sprays in a fixed direction;

[0065] Swinging state: the initial parameter determination module controls the third drive motor 25, and the third drive motor 25 drives the swing tube 24 to reciprocate at a speed of 5-15 rpm, and the swing angle range is ±30° to ±60°, so that the spray trajectory of the atomizing nozzle 21 is fan-shaped.

[0066] Specifically, the control module determines that the coloring of the pelletized seeds does not meet the preset standard in response to the surface grayscale standard deviation being greater than or equal to the first preset surface grayscale standard deviation 15, wherein the surface grayscale standard deviation is acquired by image processing software.

[0067] In this embodiment, image processing software is used to extract the grayscale value of each pixel point of the image of the colored pelletized seeds obtained by the first image acquisition unit, and the grayscale value standard deviation, that is, the surface grayscale standard deviation, is calculated. The image processing software can be MATLAB, which is not specifically limited and only needs to meet the grayscale value extraction requirements.

[0068] Specifically, the control module determines whether the coloring of the pelletized seeds meets the preset standard based on the shedding rate of the colorant under the condition that the surface grayscale standard deviation is greater than or equal to the first preset grayscale standard deviation 15 and less than the second preset surface grayscale standard deviation 35, and,

[0069] The control module determines the reason why the coloring of the pelletized seeds is not in compliance with the standard deviation of the surface grayscale is greater than or equal to the second preset grayscale standard deviation 35 according to the droplet atomization characterization value of the colorant.

[0070] Specifically, in response to the colorant shedding rate being greater than or equal to a preset shedding rate of 8%, the control module secondarily determines that the coloring of the pelletized seeds does not meet the preset standard, and increases the coloring time according to the difference between the shedding rate and the preset shedding rate.

[0071] Specifically, the shedding rate of the colorant is determined by combining the weight of the colored pelletized seeds and the weight of the colored pelletized seeds after simulated abrasion.

[0072] The shedding rate was calculated using the following formula:

[0073]

[0074] Where, D represents the shedding rate; m pre Indicates the weight of pelleted seeds after coloring; m post represents the weight of pelletized seeds after simulated abrasion; m base It indicates the weight of pelleted seeds before coloring;

[0075] To simulate wear, a vibration test bench is set up at the quality inspection station. The vibration parameters are a frequency of 15 Hz, an amplitude of 2 mm, and a duration of 120 seconds to simulate the mechanical impact during transportation.

[0076] Specifically, the control module determines the reason why the coloring of the pelletized seeds is not in compliance with the standard according to the droplet atomization characterization value, wherein:

[0077] If the droplet atomization characterization value is less than the preset droplet atomization characterization value of 0.15, it is determined that the rotation speed of the stirring blade 15 is insufficient and the rotation speed of the stirring blade 15 is increased according to the difference between the preset droplet atomization characterization value and the droplet atomization characterization value;

[0078] If the droplet atomization characterization value is greater than or equal to the preset droplet atomization characterization value, it is determined that the atomizing nozzle 21 is blocked and an early warning is issued; the droplet atomization characterization value is determined by the droplet particle size of the colorant;

[0079] Specifically, the droplet size of the colorant is obtained through an image processing algorithm;

[0080] The droplet atomization characterization value is the ratio between the standard deviation of the droplet size and the average droplet size.

[0081] Specifically, the increase in the rotation speed of the stirring blade 15 is positively correlated with the droplet atomization difference, wherein the positive correlation is, for example, a linear positive correlation or a nonlinear positive correlation, and the linear slope of the linear positive correlation is not specifically limited. It can be understood that the greater the droplet atomization difference, the greater the increase in the rotation speed of the stirring blade 15, and the droplet atomization difference is the difference between the preset droplet atomization characterization value and the droplet atomization characterization value.

[0082] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent coloring device for seed pelleting and coating, characterized in that: include: The rotating unit includes a rotating drum, a rotating disk arranged at the bottom of the rotating drum, a first driving motor for driving the rotating disk to rotate through a driving shaft, a feeding port communicated with the upper side wall of the rotating drum, a stirring blade arranged at the top of the rotating drum, and a second driving motor for driving the stirring blade to rotate; A spraying unit, comprising a plurality of atomizing nozzles, a material storage box for storing colorants, a material delivery pipe, a swing pipe, a third driving motor, a driving wheel, a driven wheel, and a bearing, wherein the material storage box is arranged on the top of a rotary drum, one end of the material delivery pipe is connected to the material storage box, the other end of the material delivery pipe is connected to the swing pipe, the bearings are symmetrically embedded in the inner wall of the rotary drum, a plurality of atomizing nozzles are evenly distributed on the surface of the upper swing pipe, both ends of the swing pipe are installed in the rotary drum through bearings, the third driving motor is installed on the side wall of the rotary drum, one end of the driving wheel is installed with a driving wheel, one end of the swing pipe is provided with a driven wheel, and the third driving motor drives the swing pipe to rotate through the meshing of the driving wheel and the driven wheel; The data acquisition module includes a first image acquisition unit disposed at the top of the rotating drum to acquire a colored image of the pelletized seeds, and a second image acquisition unit disposed on the side wall of the rotating drum to acquire a droplet image of the colorant; an initial parameter determination module, which is respectively connected to the data acquisition module, the first drive motor, the second drive motor and the third drive motor, and is used to determine the coloring mode of the coloring device and the corresponding operation strategy according to the morphological characteristic values ​​of the pelletized seeds; A control module is respectively connected to the data acquisition module, the second drive motor and the initial parameter determination module, and is used to determine whether the coloring of the pelletized seeds does not meet the preset standard based on the surface grayscale standard deviation, and to make a secondary judgment based on the shedding rate of the colorant, or to determine the reason why the coloring of the pelletized seeds does not meet the preset standard based on the droplet atomization characterization value of the colorant.

2. The intelligent coloring device for seed pelleting coating according to claim 1, characterized in that: The initial parameter determination module determines the coloring mode of the coloring device according to the morphological characteristic values ​​of the pelletized seeds, wherein: If the morphological feature value is less than the first preset morphological threshold, the initial parameter determination module determines to use the first coloring mode to color the pelletized seeds; If the morphological feature value is greater than or equal to the first preset morphological threshold and less than the second preset morphological threshold, the initial parameter determination module determines to use the second coloring mode to color the pelletized seeds; If the morphological feature value is greater than or equal to the second preset morphological threshold, the initial parameter determination module determines to use the third coloring mode to color the pelletized seeds.

3. The intelligent coloring device for seed pelleting coating according to claim 2, characterized in that: The morphological characteristic value is determined by the aspect ratio and the perimeter standard deviation.

4. The intelligent coloring device for seed pelleting coating according to claim 3, characterized in that: The initial parameter determination module determines the corresponding operation strategy based on the coloring mode, where: If the coloring mode is the first coloring mode, the initial parameter determination module controls the turntable to rotate; If the coloring mode is the second coloring mode, the initial parameter determination module controls the turntable and the stirring blade to rotate; If the coloring mode is the third coloring mode, the initial parameter determination module controls the turntable to rotate, the stirring blades to rotate, and the atomizing nozzle to change from direct injection to swing.

5. The intelligent coloring device for seed pelleting coating according to claim 4, characterized in that: The control module determines that the coloring of the pelletized seeds does not meet the preset standard in response to the surface grayscale standard deviation being greater than or equal to the first preset surface grayscale standard deviation, wherein the surface grayscale standard deviation is determined by the grayscale value of each pixel point of the image of the pelletized seeds.

6. The intelligent coloring device for seed pelleting coating according to claim 5, characterized in that: The control module determines whether the coloring of the pelletized seeds meets the preset standard based on the shedding rate of the colorant under the condition that the surface grayscale standard deviation is greater than or equal to the first preset grayscale standard deviation and less than the second preset surface grayscale standard deviation, and, The control module determines the reason why the coloring of the pelletized seeds is not in compliance with the requirements according to the droplet atomization characterization value of the colorant under the condition that the surface grayscale standard deviation is greater than or equal to the second preset grayscale standard deviation.

7. The intelligent coloring device for seed pelleting coating according to claim 6, characterized in that: In response to the colorant shedding rate being greater than or equal to a preset shedding rate, the control module secondarily determines that the coloring of the pelletized seeds does not meet a preset standard, and increases the coloring time according to the difference between the shedding rate and the preset shedding rate.

8. The intelligent coloring device for seed pelleting coating according to claim 7, characterized in that: The shedding rate of the colorant is determined by combining the weight of the colored pelletized seeds with the weight of the colored pelletized seeds after simulated abrasion.

9. The intelligent coloring device for seed pelleting coating according to claim 8, characterized in that: The control module determines the reasons for the non-conformity of the coloring of the pelletized seeds based on the droplet atomization characterization value, including insufficient rotation speed of the stirring blade and increasing the rotation speed of the stirring blade, or clogging of the atomizing nozzle and issuing an early warning; the droplet atomization characterization value is determined by the droplet particle size of the colorant.

10. The intelligent coloring device for seed pelleting coating according to claim 9, characterized in that: The increase range of the rotation speed of the stirring blade is positively correlated with the droplet atomization difference, wherein the droplet atomization difference is the difference between the preset droplet atomization characterization value and the droplet atomization characterization value.

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