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CN-121981334-A - Fully-closed compression wrapping procedure optimization method for reducing cotton seed processing loss

CN121981334ACN 121981334 ACN121981334 ACN 121981334ACN-121981334-A

Abstract

The invention belongs to the technical field of compression wrapping, and particularly relates to a fully-closed compression wrapping process optimization method for reducing cotton seed processing loss, which comprises layering cotton seeds according to a preset classification interval through moisture detection, dynamically adjusting spraying parameters and compression pressure for each layer of cotton seeds according to a mapping relation, and controlling a crushing rate while achieving a target compression ratio; after wrapping and stacking are completed, the system continuously monitors the quality degradation rate of the cotton seeds in each layer and predicts the effective storage period. When the monitoring index exceeds a preset threshold, the batch of processes are judged to be invalid, and then the tracing of the invalid factors and the iterative optimization of the process parameters based on a control variable method are started until the quality is stable and reaches the standard.

Inventors

  • JIANG FANGXING

Assignees

  • 内蒙古源生泰农牧业开发有限公司

Dates

Publication Date
20260505
Application Date
20260224

Claims (9)

  1. 1. The fully-closed compression wrapping process optimization method for reducing cotton seed processing loss is characterized by comprising the following steps of: Distributing cotton seeds to be compressed by combining a configured sensor network with a moisture classification interval to obtain the cotton seeds to be compressed with moisture delamination, wherein the moisture classification interval is constructed by combining a preset basic moisture classification interval with a storage time length of cotton seed wrapping after compression and a cotton seed quality curve; spraying the water-layered cotton seeds to be compressed by a spraying device provided with a first mapping relation and a depth Q network at a preset feeding speed, and calling a compressing device provided with a second mapping relation to compress the cotton seeds to be compressed to a preset volume parameter to obtain compressed cotton seed wrapping groups; The compressed cotton seeds are wrapped in groups, stacked according to a preset stacking mode, and the stacked cotton seeds are periodically collected and monitored by taking the storage time length and the quality evaluation score of the compressed cotton seeds as monitoring indexes to obtain the real-time compressed cotton seed quality degradation change rate and the predicted effective storage time length; if the quality degradation change rate of the cotton seeds after the real-time compression of the cotton seeds in any moisture layering is larger than or equal to a preset quality degradation change rate threshold value or the effective storage time length is smaller than a preset storage time length threshold value, judging that the cotton seeds in the corresponding moisture layering are in failure, and performing failure factor tracing and compression wrapping parameter adjustment according to the cotton seeds in the determined failure moisture layering combined with a control variable method until the conditions are met.
  2. 2. The method for optimizing the fully-closed compression wrapping procedure for reducing cotton seed processing loss according to claim 1, wherein the first mapping relation is constructed by a feeding speed, a spraying quantity per unit time, a spraying uniformity per unit area, a compressed cotton seed quality degradation rate of change combined with an association analysis algorithm and a control variable method, the second mapping relation is constructed by cotton seed varieties, compression pressures, cotton seed compression breaking rates, compressed cotton seed quality degradation rate of change combined with an association analysis algorithm and a control variable method, the compressed cotton seed quality degradation rate of change is obtained by cotton seed quality assessment score combined with a difference algorithm in storage time, the effective storage time length is a time length from when cotton seed compression wrapping is completed to when the cotton seed quality degradation rate of change after first real-time compression is smaller than a preset quality change rate threshold, the stacking mode comprises that adjacent two layers of cotton seed compression wrapping are placed in a 90-degree staggered mode, and each layer of stacking gap is controlled to be 5-10cm.
  3. 3. The method for optimizing a fully-closed compression wrapping procedure for reducing cotton seed processing loss according to claim 2, wherein the construction process of the moisture classification section comprises the steps of: based on the initial moisture value and the effective storage time length of the cotton seeds in the historical process database, analyzing by a clustering algorithm to obtain a basic moisture classification interval; based on the basic moisture classification interval and an online near infrared sensor network, acquiring a real-time moisture measurement value of the cotton seed raw material before entering a compression process, and distributing the cotton seed raw material to a corresponding initial moisture level according to the real-time moisture measurement value; The accumulated storage duration data of the compressed wrapped cotton seed wrapping and the periodic cotton seed quality assessment score which are stored in groups according to the initial moisture level are obtained, and a storage duration sequence and a cotton seed quality assessment score sequence are obtained.
  4. 4. The method for optimizing a fully-closed compression wrapping procedure for reducing cotton seed processing loss as defined in claim 3, wherein the construction process of the moisture classification section further comprises: Processing the cottonseed quality evaluation scoring sequence based on a differential algorithm to obtain a quality degradation change rate sequence representing the attenuation rate of the cottonseed wrapping quality of each initial moisture level; Performing association analysis on the quality degradation change rate sequence and the corresponding storage duration sequence to obtain a moisture association adjustment model between the moisture content and the cottonseed wrapping storage stability index; And based on the moisture association adjustment model, adopting a gradient descent optimization algorithm to iteratively adjust the boundary threshold value of the basic moisture classification interval to obtain the moisture classification interval by taking the effective storage time length of the prolonged cottonseed wrapping as an optimization target.
  5. 5. The method for optimizing a fully-closed compression wrapping procedure for reducing cotton seed processing loss according to claim 4, wherein the constructing process of the first mapping relation comprises: Based on the cotton seeds to be compressed with the layered moisture, configuring a spraying device comprising a programmable logic controller, a metering pump driven by a servo motor and a multi-nozzle array; Based on a plurality of preset feeding speed set values, controlling the spraying device to execute spraying operation, and acquiring spraying quantity data in unit time corresponding to each feeding speed set value through the programmable logic controller; acquiring spraying uniformity data of the cotton seed material surface in a unit area in the spraying operation; and obtaining the quality degradation change rate data of the cotton seed wrapping in the storage period after the cotton seed wrapping is subjected to the spraying treatment of the corresponding parameters and the compression wrapping procedure is completed.
  6. 6. The method of optimizing a fully-closed compression wrapping procedure for reducing cotton seed processing loss according to claim 5, wherein the constructing process of the first mapping relationship further comprises: Taking the feeding speed set value, the spraying quantity data in unit time and the spraying uniformity data in unit area as input characteristics, taking the quality degradation change rate data as a prediction target, and establishing an initial model of the relation between the spraying parameters and the storage quality; Based on a control variable method, performing an iterative verification experiment on the basis of the initial model to obtain an optimized spraying parameter set for enabling the quality degradation change rate data to reach a minimum value; based on the optimized spraying parameter set, a curved surface response analysis algorithm is applied to construct a first mapping relation which represents the optimal matching relation among the feeding speed, the spraying quantity in unit time and the spraying uniformity in unit area; and storing the first mapping relation to a mapping database of the programmable logic controller.
  7. 7. The optimizing method of fully-closed compression wrapping procedure for reducing cotton seed processing loss according to claim 6, wherein spraying the cotton seeds to be compressed, which are layered by moisture, with a spraying device provided with a first mapping relation and a depth Q network at a preset feeding speed, comprises: Inquiring a pre-stored first mapping relation based on the moisture level identification of the cotton seeds to be compressed and feeding speed data acquired in real time, and acquiring corresponding spraying quantity per unit time and target nozzle array swing frequency parameters; based on the obtained spraying quantity in the target unit time and the swing frequency parameter of the target nozzle array, setting the flow rate of a metering pump through a programmable logic controller and driving a multi-nozzle array to execute periodic swing; based on the set spraying device, spraying operation is carried out on the cotton seeds to be compressed passing through the spraying area; acquiring sprayed cotton seed surface image data, and acquiring actual spraying uniformity in unit area through an image processing algorithm; judging whether the real-time spray uniformity is qualified or not based on the actual spray uniformity in unit area and a pre-stored upper uniformity threshold and a pre-stored lower uniformity threshold; If the real-time spray uniformity is judged to be unqualified, based on a proportional integral control algorithm, calculating updated spray quantity per unit time or nozzle array swing frequency parameters according to the deviation of the actual spray uniformity per unit area and a target uniformity median, and re-executing spray operation.
  8. 8. The method of optimizing a fully enclosed compression wrapping procedure for reducing cotton seed processing loss of claim 7, wherein invoking a compression device configured with a second mapping relationship to compress the cotton seed to be compressed to a preset volume parameter comprises: Inquiring a pre-stored second mapping relation based on the variety identification information of the cotton seeds to be compressed and a preset target volume compression ratio, and acquiring a corresponding target compression pressure parameter and a target dwell time parameter; Based on the obtained target compression pressure parameter and the target dwell time parameter, configuring a pressure set value of a servo hydraulic system and a timing set value of a time control module through a programmable logic controller; based on the configured compressing device, compressing and pressure maintaining operation is carried out on the cotton seeds to be compressed which are fed into the compressing cavity; based on a pressure sensor arranged in a compression cavity, acquiring actual pressure data in the compression operation process in real time, and dynamically adjusting the output of a servo hydraulic system through a proportional-integral-derivative control algorithm based on the actual pressure data; and controlling the servo hydraulic system to release pressure based on the parameters of the target dwell time, and pushing out the compressed cotton seed blocks.
  9. 9. The method for optimizing a fully-closed compression wrapping procedure for reducing cotton seed processing loss according to claim 8, wherein invoking a compression device configured with a second mapping relationship to compress the cotton seeds to be compressed to a preset volume parameter, further comprises: Image acquisition is carried out on the compressed cotton seed blocks, and cotton seed compression crushing rate data is obtained through an image analysis algorithm; Comparing the cotton seed compression crushing rate data with a pre-stored crushing rate threshold value, and generating a compression parameter adjustment signal if the cotton seed compression crushing rate data is larger than the crushing rate threshold value; Based on the compression parameter adjustment signal, combining with the variety identification information of the cotton seeds to be compressed, adopting a gradient descent algorithm to iteratively optimize and update the corresponding target compression pressure parameter or target dwell time parameter in the second mapping relation; and based on the updated second mapping relation, performing compression operation on the same-variety cotton seeds to be compressed in the subsequent batches until the cotton seed compression crushing rate data is not greater than the crushing rate threshold value, and finally obtaining compressed cotton seed wrapping groups reaching preset volume parameters.

Description

Fully-closed compression wrapping procedure optimization method for reducing cotton seed processing loss Technical Field The invention belongs to the technical field of compression wrapping, and particularly relates to a fully-closed compression wrapping procedure optimization method for reducing cotton seed processing loss. Background The cotton seeds are used as by-products of important oil crops in the fields of agricultural production and industrial processing, the technical short plates of post-production storage and logistics links restrict the industrial scale development for a long time, and directly lead to high cotton seed processing loss, the current industry generally adopts an open-air loose stacking or simple warehouse storage mode, the cotton seeds are stacked in low density to cause the insufficient utilization rate of storage space, the site construction cost is high, and the leak tightness is lost to cause the cotton seeds with high oil content to easily absorb moisture, thereby causing the problems of mildew, rancidity and worm damage and causing a great deal of quality deterioration and economic loss. In addition, the existing cotton seed compression treatment is easy to cause seed coat breakage and accelerate grease oxidation, the problem of uneven dosage exists in manual spraying of additives, the difference of the storage conditions of customers such as downstream grease processing factories, feed factories and the like is large, professional warehouse is partially lacking, the bulk cotton seeds need to be treated in time after arriving at the factories, otherwise, the bulk cotton seeds are easy to be subjected to rain and damp and mould again, the processing loss is further aggravated, and the problem is solved by the targeted fully-closed compression wrapping procedure optimization technology. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a fully-closed compression wrapping procedure optimization method for reducing cotton seed processing loss, which is to layer cotton seeds according to a preset classification interval through moisture detection, and dynamically adjusting spraying parameters and compression pressure for each layer of cotton seeds according to the mapping relation, and controlling the crushing rate while achieving the target compression ratio. After wrapping and stacking are completed, the system continuously monitors the quality degradation rate of the cotton seeds in each layer and predicts the effective storage period. When the monitoring index exceeds a preset threshold, the batch of processes are judged to be invalid, and then the tracing of the invalid factors and the iterative optimization of the process parameters based on a control variable method are started until the quality is stable and reaches the standard. In order to achieve the above purpose, the present invention provides the following technical solutions: The fully-closed compression wrapping procedure optimizing method for reducing cotton seed processing loss comprises the following steps: Distributing cotton seeds to be compressed by combining a configured sensor network with a moisture classification interval to obtain the cotton seeds to be compressed with moisture delamination, wherein the moisture classification interval is constructed by combining a preset basic moisture classification interval with a storage time length of cotton seed wrapping after compression and a cotton seed quality curve; spraying the water-layered cotton seeds to be compressed by a spraying device provided with a first mapping relation and a depth Q network at a preset feeding speed, and calling a compressing device provided with a second mapping relation to compress the cotton seeds to be compressed to a preset volume parameter to obtain compressed cotton seed wrapping groups; The compressed cotton seeds are wrapped in groups, stacked according to a preset stacking mode, and the stacked cotton seeds are periodically collected and monitored by taking the storage time length and the quality evaluation score of the compressed cotton seeds as monitoring indexes to obtain the real-time compressed cotton seed quality degradation change rate and the predicted effective storage time length; if the quality degradation change rate of the cotton seeds after the real-time compression of the cotton seeds in any moisture layering is larger than or equal to a preset quality degradation change rate threshold value or the effective storage time length is smaller than a preset storage time length threshold value, judging that the cotton seeds in the corresponding moisture layering are in failure, and performing failure factor tracing and compression wrapping parameter adjustment according to the cotton seeds in the determined failure moisture layering combined with a control variable method until the conditions are met. The method comprises the steps of establishing a first mapping relation by