Anti-blocking early warning control method and system for tobacco primary processing pneumatic drying system

Abstract

The invention relates to the technical field of tobacco primary processing pneumatic drying equipment monitoring, and provides an anti-blocking early warning control method and system for a tobacco primary processing pneumatic drying system, and the method comprises the following steps: determining at least two temperature detection points on a production line of the tobacco primary processing pneumatic drying system; determining the duration of conveying the tobacco from the previous temperature detection point to the next temperature detection point as the delay time t delay of the two temperature detection points; and sequentially and correspondingly comparing the obtained data of the front and back temperature measurement points based on the delay time, sending out early warning information when the temperature data change trends are different, and controlling the operation state of the tobacco primary processing pneumatic drying system based on the early warning information. According to the method, through a trend comparison mode, the hysteresis quality of traditional single-point temperature threshold value judgment is overcome, the prediction precision of the material blocking risk is improved, and accurate control over the tobacco primary processing pneumatic drying system is achieved.

Description

Technical Field

[0001] The present disclosure relates to the technical field related to monitoring of tobacco shredded airflow drying equipment, and in particular to a material blocking prevention early warning control method and system for a tobacco shredded airflow drying system. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] In the tobacco shred production process, tobacco shred airflow drying systems such as the HXD drying device airflow drying system are a widely used tobacco shred drying method. The system uses high-speed airflow to dry the tobacco shreds to achieve efficient and uniform moisture control. However, the equipment structure of the system is relatively complex, and the process involves multiple links, making it difficult to stably control the production process. In actual production, the HXD airflow drying system is easily affected by problems such as tobacco accumulation and blockage, resulting in reduced production efficiency and even equipment failure. In addition, tobacco shreds are retained in a high-temperature, high-speed airflow environment for a long time, which may cause local overheating and pose a fire safety hazard.

[0004] The inventors found in their research that, at present, the industry often uses a threshold judgment method based on temperature monitoring, which mainly relies on monitoring the temperature CP value of the wall of the tobacco drying machine barrel and comparing it with the preset CPTn warning threshold. When the temperature CP value is lower than the warning threshold, the system triggers a warning or alarm. However, this method has certain limitations, which are mainly manifested in: the hysteresis of single-point threshold judgment. The existing method is mainly based on single-point judgment of real-time temperature data, lacks continuous analysis of temperature change trends, and may cause a lag in warning response, and cannot timely discover potential blockage problems, and it is difficult to accurately identify the risk of blockage caused by tobacco accumulation; the single-point threshold judgment has low accuracy, and it will only act when it exceeds the warning temperature. This has caused the internal temperature to be too high, causing local overheating, causing damage to both the device and the tobacco, and cannot be predicted in advance. Summary of the invention

[0005] In order to solve the problems of complex structure, multiple process flows and difficult problem handling of the above-mentioned HXD airflow drying system, the present invention proposes a tobacco silk airflow drying system anti-blocking early warning control method and system, which can achieve accurate blockage prediction and earlier early warning control.

[0006] In order to achieve the above objectives, the present disclosure adopts the following technical solutions:

[0007] One or more embodiments provide a method for preventing material blocking in a tobacco shred airflow drying system, comprising the following steps:

[0008] Determine at least two temperature detection points on the production line of tobacco shred airflow drying system;

[0009] Determine the time it takes for tobacco to be transported from the previous temperature detection point to the next temperature detection point as the delay time t between the two temperature detection points. 延时 ;

[0010] The data of the previous and next temperature measurement points are compared in sequence based on the delay time. When the temperature data change trends are different, an early warning message is issued, and the operating state of the tobacco shred airflow drying system is controlled based on the early warning message.

[0011] One or more embodiments provide a tobacco shred airflow drying system anti-blocking early warning control system, including:

[0012] A monitoring point determination module is configured to determine at least two temperature detection points on a production line of a tobacco shred airflow drying system;

[0013] The delay time determination module is configured to determine the time it takes for tobacco to be transported from a previous temperature detection point to a subsequent temperature detection point as the delay time t between the two temperature detection points. 延时 ;

[0014] The comparison module is configured to compare the data of the previous and next temperature measurement points in sequence based on the delay time. When the temperature data change trends are different, an early warning message is issued, and the operating status of the tobacco shred airflow drying system is controlled based on the early warning message.

[0015] An electronic device includes a memory and a processor, and computer instructions stored in the memory and running on the processor. When the computer instructions are run by the processor, the steps in the above-mentioned tobacco shred airflow drying system anti-blocking early warning control method are completed.

[0016] A computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by a processor, the steps in the above-mentioned tobacco shred airflow drying system anti-blocking material early warning control method are completed.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The method disclosed in the present invention is based on the temperature variation law of tobacco in the airflow drying system. By arranging at least two temperature detection points on the tobacco production line, the time interval of tobacco passing through the two detection points is calculated by time delay, the temperature data of the corresponding time points are obtained, and the variation trends are compared. When the temperature variation trends before and after are inconsistent, it indicates that the flow state of tobacco may be abnormal, such as tobacco accumulation or blockage. This method overcomes the hysteresis of traditional single-point temperature threshold judgment by trend comparison, improves the prediction accuracy of blockage risk, and realizes precise control of tobacco airflow drying system. Compared with the traditional single-point temperature threshold judgment method, the scheme disclosed in the present invention can detect the accumulation trend of tobacco earlier and take intervention measures in advance, thereby improving equipment operation efficiency, ensuring product quality, and effectively reducing fire risks.

[0019] The advantages of the present disclosure and the advantages of additional aspects will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure but do not constitute a limitation of the present disclosure.

[0021] Figure 1 is a schematic structural diagram of a tobacco shred airflow drying system according to Embodiment 1 of the present disclosure;

[0022] Figure 2 is a method flow chart of the anti-blocking material early warning control method of the tobacco shred airflow drying system of Example 1 of the present disclosure; DETAILED DESCRIPTION

[0023] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0024] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof. It should be noted that, in the absence of conflict, the various embodiments in the present disclosure and the features in the embodiments can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0026] Example 1

[0027] In the technical solutions disclosed in one or more embodiments, Figure 1 to Figure 2 As shown, a tobacco shred airflow drying system anti-blocking early warning control method comprises the following steps:

[0028] Step 1, determining at least two temperature detection points on the production line of the tobacco shred airflow drying system;

[0029] Step 2: Determine the time it takes for tobacco to be transported from the previous temperature detection point to the next temperature detection point, as the delay time t between the two temperature detection points. 延时 ;

[0030] Step 3: Compare the data of the previous and next temperature measurement points in sequence based on the delay time. When the temperature data change trends are different, issue a warning message, and control the operating state of the tobacco shred airflow drying system based on the warning message.

[0031] The method of this embodiment is based on the temperature change law of tobacco in the airflow drying system. By arranging at least two temperature detection points on the tobacco production line, the time interval between the tobacco passing through the two detection points is calculated using time delay, the temperature data at the corresponding time point is obtained, and the change trend is compared. When the temperature change trends before and after are inconsistent, it indicates that the tobacco flow state may be abnormal, such as tobacco accumulation or blockage. This method overcomes the hysteresis of the traditional single-point temperature threshold judgment by comparing trends, improves the prediction accuracy of the risk of blockage, and realizes precise control of the tobacco airflow drying system.

[0032] This method is based on the comparison of temperature change trends and does not rely on a single-point temperature threshold. It can detect the trend of blockage in advance and avoid the delayed response problem caused by single-point temperature anomalies. The traditional method only triggers an early warning after the temperature exceeds the threshold, while this method can predict before the blockage occurs to avoid equipment damage caused by local overheating. By early warning and controlling the system operation status, production interruptions caused by blockage can be reduced, and the stability and continuity of the drying system can be improved. Prevent local overheating caused by tobacco accumulation, reduce the risk of fire, and improve the safety of the production process.

[0033] In some embodiments, in step 1, the number of detection points may be multiple, one or more detection points may be spaced between the previous detection point and the next detection point, and the next detection point may be one or more, that is, the temperature data of one detection point may be compared with the data of the next multiple detection points to improve the accuracy of the detection;

[0034] Specifically, the order of the previous inspection point and the next inspection point is determined according to the order of tobacco transportation;

[0035] Specifically, the number of temperature detection points can be adjusted according to the length of the production line and the drying requirements, for example, increased to three points or more, to improve the precision of data collection;

[0036] like Figure 1 As shown, the structure of the tobacco shred airflow drying system includes an RCC moisture reconditioning cylinder, a moisture reconditioning cylinder discharge vibration trough, a conveyor belt, an HXD drying device inlet vibration trough, an inlet air lock, a drying section, a cyclone separator, an outlet air lock, an outlet vibration trough and a moisture exhaust hood connected in sequence;

[0037] Optionally, a temperature detector can be set at the discharge vibration groove of the rehumidification cylinder of the tobacco silk airflow drying system as the first detection point, and a temperature detector can be set at the outlet vibration groove of the drying equipment of the HXD drying device as the second detection point. Two detection points are set for illustration in this embodiment.

[0038] The process of tobacco shred airflow drying system is as follows:

[0039] Moisture Retention Stage: After the tobacco is heated and humidified by the RCC Moisture Retention Cylinder, the discharge temperature reaches about 60 degrees and the moisture content reaches 25%. It is then transported to the subsequent HXD drying device through the discharge vibration trough and conveyor belt;

[0040] Drying stage: The tobacco shreds enter the drying section of the HXD drying device through the inlet vibration trough and the inlet air lock of the HXD drying device. Under the action of the process gas flow at about 330 degrees and a wind speed of about 15m / s, the tobacco shreds are rapidly dehydrated and expanded. After passing through the cyclone separator and the discharge air lock, they are transported out through the discharge vibration trough. A dehumidification hood is installed above the discharge vibration trough. The moisture content of the tobacco shreds is 12.5 and the temperature can reach 85 degrees.

[0041] During production, tobacco is transferred many times through RCC rehumidification, RCC discharge trough, conveyor belt, HXD drying device inlet trough, inlet air lock, drying section, cyclone separator, HXD drying device outlet air lock and discharge trough, which is prone to blockage. There are two common places where blockage occurs: the bottom of the drying section and the lower part of the outlet air lock.

[0042] At the bottom of the drying section, when the abnormal process air flow rate of the equipment decreases, the tobacco lifting capacity decreases, and the tobacco accumulates and blocks the lower part of the drying section. Because the process gas temperature is as high as more than 300 degrees, the tobacco will quickly burn, leading to a fire accident and posing a production safety hazard.

[0043] At the junction of the discharge vibration trough and the dehumidification hood at the lower part of the outlet air lock of the HXD drying device, when the motor drive belt of the discharge vibration trough of the HXD drying device is loose, the pulley slips, or the elastic plate fails, the tobacco cannot be normally vibrated and transported in the discharge vibration trough, and the tobacco accumulates and causes blockage. When blockage occurs at this place, it is not easy to be discovered. The tobacco will gather at the lower part of the cyclone separator until the discharge air lock overloads and trips, and the equipment stops and alarms. At this time, the blockage problem is already quite serious, and the internal tobacco material temperature is relatively high. Manual processing of the material removal takes up to 2 hours, affecting the effective operation rate of the equipment.

[0044] In this embodiment, two temperature detection positions are provided to cover positions where material blockage is likely to occur, and material blockage detection can be performed effectively.

[0045] In some embodiments, in step 2, the delay time of the two temperature detection points is recorded in a timing manner during normal production, such as using a stopwatch to record the time that the temperature change of the previous temperature detection point lags behind the temperature change of the next temperature detection point;

[0046] In this embodiment, during normal production, it is determined that the discharge temperature change of the HXD drying device lags behind the discharge temperature change of the RCC rehumidification cylinder by t 延时 ;

[0047] In step 3, the data of the previous and next temperature measurement points are compared in sequence based on the delay time. When the temperature data change trends are different, specifically, the temperature data of the previous temperature detection point increases, and the temperature data of the previous temperature detection point increases after the delay time. 延时 If the second temperature data detected later decreases, it is determined that the change trends of the two temperature data are different;

[0048] Furthermore, the method of comparing the data of the previous and next temperature measurement points based on the delay time to determine the change trend of the temperature data includes the following steps:

[0049] Step 31, setting the lowest temperature of the previous temperature detection point as the first threshold, and setting the lowest temperature of the next temperature detection point as the second threshold;

[0050] Specifically, the minimum temperature is the lowest value of the temperature detected by the corresponding temperature detection point during normal production;

[0051] Step 32: collect the temperature of the previous temperature detection point according to the set interval time t 间隔 Obtaining the first temperature of the previous temperature detection point and sequentially storing it in the constructed temperature data queue image area;

[0052] Specifically, the interval time t for temperature collection is 间隔 It can be set to a few seconds, such as 1 second, 2 seconds, etc.

[0053] Step 33: Delay t relative to the start time of the previous temperature detection point 延时 After that, according to the set time interval t 间隔 Acquire a second temperature of a subsequent temperature detection point;

[0054] In the above steps 32 and 33, the temperature is sampled at the set intervals, and the second temperature is sampled at the delay time t 延时 The first temperature data and the second temperature data are point-to-point corresponding data, and the difference in collection time is t. 延时 time;

[0055] Specifically, the tobacco temperature at the previous temperature detection point detected at time t is equal to the temperature at time t+t 延时 The corresponding comparison of the tobacco temperature at the next temperature detection point at the time is the corresponding data;

[0056] Step 34, taking out the first temperature of the temperature data queue image area in sequence according to the queue, and comparing the change trends of the first temperature and the second temperature based on the set temperature threshold to obtain a determination result of whether material blockage occurs;

[0057] In step 34, the method for comparing the changing trends of the first temperature and the second temperature is specifically:

[0058] Step 341, obtaining a first temperature of the temperature data queue image area, and comparing it with a set first threshold;

[0059] Step 342: when the output first temperature is greater than the first threshold, read the corresponding second temperature data;

[0060] Step 343, compare the read second temperature data with the second threshold value, if the second temperature data is greater than the second threshold value, it is determined to be normal; otherwise, after a set anti-jitter delay, re-collect the second temperature data, and if the re-collected data is greater than the second threshold value, it is determined that material blockage occurs;

[0061] by Figure 1 Take the system structure as an example, and use the PLC controller to judge the material blocking to illustrate the above-mentioned material blocking judgment process:

[0062] 1) Initialization parameters: When the HXD drying device is in normal production, the RCC discharge trough temperature T is measured. RCC , RCC discharge temperature minimum value T RCC阈值 Set as the first threshold;

[0063] When the HXD drying device is in normal production, the temperature of the discharge vibration trough of the HXD drying device is measured. HXD, the lowest discharge temperature T of the HXD drying device HXD阈值 Set as the second threshold;

[0064] When the temperature change of the HXD drying device lags behind the RCC temperature change time, the stopwatch is used to time the production. 延时 ;

[0065] 2) When the RCC rehumidification cylinder is working, the outlet temperature of the RCC rehumidification cylinder is greater than the threshold value T RCC阈值 , the PLC program reads the temperature value T every second RCC Write the data block into the image area for storage;

[0066] In this embodiment, the interval time for temperature data collection is set to 1 second;

[0067] When the discharge trough, discharge air lock, inlet air lock, feed trough, conveyor belt and RCC discharge trough of the HXD drying device are operating normally, the PLC program executes the data block image area data downward once per second according to the queue management method and implements the first-in-first-out rule.

[0068] 3) The PLC program reads the output value of the queue image area. When the output value is greater than T RCC阈值 When the PLC program simultaneously reads the temperature value T of the vibration trough at the outlet of the HXD drying device HXD With the second threshold T HXD阈值 When the actual temperature value T HXD Greater than T HXD阈值 , indicating that the material is transported normally and there is no blocking of tobacco; when the actual temperature value T HXD Less than or equal to T HXD阈值 , and after 3 seconds of anti-shake delay, the actual temperature value T HXD Still less than or equal to T HXD阈值 The program determines that the temperature meter at the outlet of the HXD drying device fails to detect the corresponding tobacco normally. The PLC program stops feeding the inlet of the HXD drying device and outputs the blockage alarm information of the HXD drying device, prompting the operator to deal with the blockage fault on site.

[0069] In the above scheme of this embodiment, the time when the tobacco reaches the discharge vibration groove thermometer of the HXD drying device normally is recorded with the outlet vibration groove thermometer of the RCC rehumidification cylinder as the starting point, and the RCC discharge temperature value is recorded once per second during this period of time and stored in the PLC data block image area. The data in the image area is transmitted in a first-in-first-out working mode. The PLC accesses the temperature value recorded by the RCC outlet vibration groove according to the program as the production status. The PLC reads the temperature value of the discharge vibration groove of the HXD drying device and judges the temperature. If the temperature is higher than the set threshold, the tobacco conveying process is normal. When the temperature value is lower than the set threshold, it is considered that a blocking phenomenon occurs. The PLC stops the inlet vibration groove of the HXD drying device and outputs an alarm message, which can play a blocking warning effect.

[0070] Example 2

[0071] Based on Example 1, this embodiment provides a tobacco shred airflow drying system anti-blocking material early warning control system, including:

[0072] A monitoring point determination module is configured to determine at least two temperature detection points on a production line of a tobacco shred airflow drying system;

[0073] The delay time determination module is configured to determine the time it takes for tobacco to be transported from a previous temperature detection point to a subsequent temperature detection point as the delay time t between the two temperature detection points. 延时 ;

[0074] The comparison module is configured to compare the data of the previous and next temperature measurement points in sequence based on the delay time. When the temperature data change trends are different, an early warning message is issued, and the operating status of the tobacco shred airflow drying system is controlled based on the early warning message.

[0075] like Figure 1 As shown, the structure of the tobacco shred airflow drying system includes an RCC moisture reconditioning cylinder, a moisture reconditioning cylinder discharge vibration trough, a conveyor belt, an HXD drying device inlet vibration trough, an inlet air lock, a drying section, a cyclone separator, an outlet air lock, an outlet vibration trough and a moisture exhaust hood connected in sequence;

[0076] Furthermore, a temperature detector is provided at the discharging vibration groove of the moisture conditioning drum as the former detection point, and a temperature detector is provided at the outlet vibration groove of the drying equipment of the HXD drying device as the latter detection point.

[0077] It should be noted here that the various modules in this embodiment correspond one-to-one to the various steps in Example 1, and the specific implementation process is the same, which will not be repeated here.

[0078] Example 3

[0079] This embodiment provides an electronic device, including a memory and a processor, and computer instructions stored in the memory and running on the processor. When the computer instructions are run by the processor, the steps of the anti-blocking early warning control method of a tobacco shred airflow drying system in embodiment 1 are completed.

[0080] Example 4

[0081] This embodiment provides a computer-readable storage medium for storing computer instructions. When the computer instructions are executed by a processor, the steps of the anti-blocking early warning control method of a tobacco shred airflow drying system in embodiment 1 are completed.

[0082] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0083] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A tobacco shred airflow drying system anti-blocking early warning control method, characterized in that: The steps include: Determine at least two temperature detection points on the production line of tobacco shred airflow drying system; Determine the time it takes for tobacco to be transported from the previous temperature detection point to the next temperature detection point as the delay time t between the two temperature detection points. 延时 ; The data of the front and rear temperature measurement points are compared in sequence based on the delay time. If the temperature data change trends of the front and rear temperature measurement points are different, an early warning message is issued, and the operating status of the tobacco shred airflow drying system is controlled based on the early warning information.

2. The method for preventing material blocking in a tobacco shred airflow drying system according to claim 1, characterized in that: There are multiple detection points, one or more detection points are spaced between a previous detection point and a subsequent detection point, and there are one or more subsequent detection points.

3. The method for preventing material blocking in a tobacco shred airflow drying system according to claim 1, characterized in that: The first temperature data and the second temperature data are compared in sequence. The change trends of the two temperature data are different. Specifically, the temperature data of the previous temperature detection point increases. After the delay t 延时 If the second temperature data detected later decreases, it is determined that the change trends of the two temperature data are different.

4. The method for preventing material blocking in a tobacco shred airflow drying system according to claim 1, characterized in that: The method of comparing the data of the previous and next temperature measurement points based on the delay time to determine the change trend of the temperature data includes the following steps: The lowest temperature of the previous temperature detection point is set as the first threshold, and the lowest temperature of the next temperature detection point is set as the second threshold; The temperature of the previous temperature detection point is collected according to the set interval time t 间隔 Obtaining the first temperature of the previous temperature detection point and sequentially storing it in the constructed temperature data queue image area; Delay t relative to the start time of the previous temperature detection point 延时 After that, according to the set time interval t 间隔 Acquire a second temperature of a subsequent temperature detection point; The first temperature of the temperature data queue image area is taken out in sequence according to the queue, and based on the set temperature threshold, the change trends of the first temperature and the second temperature are compared to obtain a determination result of whether blockage occurs.

5. A tobacco shred airflow drying system anti-blocking early warning control method according to claim 4, characterized in that: The comparison method of the variation trend of the first temperature and the second temperature is as follows: Obtaining a first temperature of the temperature data queue image area, and comparing it with a set first threshold; When the output first temperature is greater than the first threshold, reading the corresponding second temperature data; Compare the read second temperature data with the second threshold value, and if the second temperature data is greater than the second threshold value, determine that it is normal; Otherwise, after a set anti-jitter delay, the second temperature data is collected again, and if the recollected data is greater than the second threshold, it is determined that material blockage has occurred.

6. A tobacco shred airflow drying system anti-blocking early warning control method according to claim 4, characterized in that: The first temperature in the temperature data queue image area is taken out in sequence according to the queue, and the first temperature value is output in sequence according to the first-in-first-out order of the queue.

7. A tobacco shred airflow drying system anti-blocking early warning control system, characterized in that: include: A monitoring point determination module is configured to determine at least two temperature detection points on a production line of a tobacco shred airflow drying system; The delay time determination module is configured to determine the time it takes for tobacco to be transported from a previous temperature detection point to a subsequent temperature detection point as the delay time t between the two temperature detection points. 延时 ; The comparison module is configured to compare the data of the previous and next temperature measurement points in sequence based on the delay time. When the temperature data change trends are different, an early warning message is issued, and the operating status of the tobacco shred airflow drying system is controlled based on the early warning message.

8. The anti-blocking material early warning control system of the tobacco shred airflow drying system according to claim 1, characterized in that: The structure of the tobacco shred airflow drying system includes RCC moisture regeneration cylinder, moisture regeneration cylinder discharge vibration trough, conveyor belt, HXD drying device inlet vibration trough, inlet air lock, drying section, cyclone separator, outlet air lock, outlet vibration trough and dehumidification hood connected in sequence; A temperature detector is set at the discharging vibration trough of the moisture conditioning drum as the former detection point, and a temperature detector is set at the outlet vibration trough of the drying equipment of the HXD drying device as the latter detection point.

9. An electronic device, characterized in that: The method comprises a memory and a processor and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, the steps of the anti-blocking early warning control method for a tobacco shred airflow drying system as described in any one of claims 1 to 6 are completed.

10. A computer-readable storage medium, characterized in that: Used to store computer instructions, which, when executed by a processor, complete the steps of the anti-blocking early warning control method for a tobacco shred airflow drying system as described in any one of claims 1 to 6.

Images