Tobacco flexible winnowing air door adjustment method, electronic device and medium

Abstract

This application discloses a method, electronic device, and medium for adjusting the damper of a flexible tobacco air separation system, relating to the technical field of tobacco processing and manufacturing equipment. The method includes: detecting whether the purity of the material on the first discharge belt is qualified; if the purity of the material on the first discharge belt is unqualified, increasing the damper; detecting the fiber content of the material at the primary sorting outlet; if the fiber content exceeds the standard, decreasing the damper; detecting whether the flow rate of the material on the third discharge belt exceeds a second flow rate threshold; if the flow rate of the material on the third discharge belt exceeds the second flow rate threshold, increasing the make-up air force; determining whether the purity of the material on the second discharge belt is qualified; if qualified, maintaining the corresponding make-up air force stably to achieve flexible air separation of qualified tobacco. The embodiments of this application can automatically adjust the damper so that the tobacco meets the required purity after a second air separation.

Description

Technical Field

[0001] This application relates to the field of tobacco processing and manufacturing equipment technology, and more specifically, to a method for adjusting a flexible tobacco air separation damper, electronic equipment, and a medium. Background Technology

[0002] After tobacco products enter the sorting chamber through the feeding mechanism, they are first subjected to flotation in the primary air classifier. Due to the differences in density and air-receiving area of ​​the materials being separated, the distances they fall also differ, thus achieving flotation separation. However, flotation is not effective for materials with similar mass densities. To ensure separation efficiency, a secondary separation chamber is used to perform flotation again on the materials that have been flotated. Utilizing the difference in suspension velocity, the lighter materials mixed in are selected and discharged from the primary air classifier outlet, while the heavier and larger materials are discharged from the secondary separation chamber outlet. After multiple processes, the materials are discharged from the secondary air classifier outlet. Although there is a relatively high wind speed in the discharge hopper, the cross-section of the discharge hopper is much smaller than that of the air classifier box, which maintains a suitable wind speed across the box's cross-section. Materials of different mass densities fall into different parts of the box. Throughout the process, apart from dust, no material is carried out of the box by the airflow, thus achieving on-site separation and eliminating the need for air classification. However, how to achieve coordinated operation between primary and secondary air classification by adjusting the dampers to ensure that the material from the first and second discharge belts meets the qualification standards is an important issue currently facing researchers. Summary of the Invention

[0003] One technical problem this application aims to solve is to provide a method, electronic device, and medium for adjusting the damper of a flexible tobacco air classifier, which ensures that the material discharged from the primary air classifier is qualified by adjusting the damper, and simultaneously adjusts the damper of the primary air classifier in conjunction with the secondary air classifier to ensure that the discharged material is qualified when the material discharged is unqualified.

[0004] According to one aspect of this application, a method for adjusting a flexible tobacco air separation damper is provided, comprising:

[0005] Check whether the purity of the material on the first discharge conveyor belt is up to standard;

[0006] If the purity of the material on the first discharge belt is not up to standard, the damper should be adjusted to be larger.

[0007] Detect the fiber content of the material exiting the sorting outlet and determine if it exceeds the standard;

[0008] If the fiber content exceeds the standard, the damper should be adjusted to a smaller size.

[0009] Detect whether the flow rate of material on the third discharge belt exceeds the second flow rate threshold;

[0010] If the flow rate of the material on the third discharge belt exceeds the second flow rate threshold, increase the make-up air force and determine whether the purity of the material on the second discharge belt is qualified.

[0011] If the tobacco meets the requirements, maintain a stable supply airflow to facilitate flexible air separation of qualified tobacco.

[0012] In some embodiments, if the purity of the material on the second discharge belt is greater than the first purity threshold but less than the qualified threshold, i.e. it is unqualified, the replenishment air force is further increased.

[0013] In some embodiments, if the purity of the material on the second discharge belt is less than the first purity threshold, i.e. it is unqualified, the flow rate of the initial material is reduced, and the damper is not operated, i.e. it remains stationary, wherein the initial material is the material intended to enter the primary air classifier.

[0014] In some embodiments, if the purity of the material on the second discharge belt is less than the first purity threshold, i.e. it is unqualified, the flow rate of the initial material is not adjusted, and the damper is increased, wherein the initial material is the material to be entered into the primary air classifier.

[0015] In some embodiments, if the purity of the material on the second discharge belt is less than the first purity threshold, i.e. it is unqualified, the flow rate of the initial material is reduced while the damper is increased, wherein the initial material is the material to be entered into the primary air classifier.

[0016] In some embodiments, before detecting whether the purity of the material on the first discharge belt is qualified, the method further includes:

[0017] Detect whether the initial material flow rate is less than the first flow rate threshold;

[0018] If the flow rate is less than the first flow threshold, adjust the damper to 20%.

[0019] In some embodiments, the pass threshold is 99%.

[0020] In some embodiments, the first purity threshold is 95%, the flow rate of the initial material is reduced from 5000 kg / h to 4500 kg / h, and the damper is increased from 60% to 70%.

[0021] According to another aspect of this application, an electronic device is also provided, the electronic device comprising:

[0022] One or more processors;

[0023] A storage device for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement the tobacco flexible air separation damper adjustment method described above.

[0024] According to another aspect of this application, a computer-readable storage medium is also proposed, on which a computer program is stored, which, when executed by a computer processor, causes the computer to perform the tobacco flexible air separation damper adjustment method as described above.

[0025] In the embodiments of this application, by adjusting the damper on the primary air classifier box, the tobacco or material discharged from the primary air classifier outlet is ensured to meet the qualification standard. In addition, when the material discharged from the secondary air classifier outlet is unqualified, the material discharged from the secondary air classifier outlet can be made to meet the qualification standard by adjusting the supplementary air force or by adjusting the damper of the secondary air classifier in conjunction with the primary air classifier. Furthermore, if any unexpected factors intervene during the production process, this technical solution can automatically adjust the damper to ensure that the materials discharged from both the primary and secondary air classifier outlets are qualified.

[0026] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which form part of this specification, illustrate embodiments of this application and, together with the specification, serve to explain the principles of this application.

[0028] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0029] Figure 1 This is a schematic diagram of the tobacco flexible air separation damper adjustment method of this application;

[0030] Figure 2 This is a flowchart illustrating some embodiments of the tobacco flexible air separation damper adjustment method of this application;

[0031] Figure 3 This is a schematic diagram of the structure of a computer system for an electronic device according to some embodiments of this application. Detailed Implementation

[0032] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0033] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0038] like Figure 1 As shown, an online weighing and metering system is added to the front end of the feeding and leveling vibrating trough to ensure the uniform flow of material after drying. The material conveyed from the online weighing and metering system enters the feeding and leveling vibrating trough, which is inserted 200mm into the primary air classifier. The feeding and leveling vibrating trough and the primary air classifier are connected by a flexible connection to prevent leakage. There is a baffle plate with a length equal to the width of the feeding and leveling vibrating trough at the material drop point in the primary air classifier. The baffle plate has an inclination angle of 45°. All the material flowing into the primary air classifier from the feeding and leveling vibrating trough can pass through the side air intake and bottom air intake as evenly as possible to ensure that the material is fully floated by the wind. The floating material is then transported by the feeding belt to the primary air classifier outlet. Then, the material that has passed the first air classifier is transported to the next process from the first discharge belt.

[0039] The lower part of the primary air separator is equipped with a secondary separation box, which also contains needle rollers. Some materials will enter the secondary separation box and be blown by the lower air intake. After entering the secondary separation box, the sorted materials will be further loosened and separated by the action of multiple needle rollers, thus improving the sorting efficiency. It is equivalent to performing a secondary floating separation on the materials in the secondary separation box.

[0040] After secondary separation, the material falls from the primary sorting outlet of the secondary separation box to the third discharge belt. A laser scanning online material flow test system is installed directly above the third discharge belt. The main function of the laser scanning online material flow test system is to detect the flow rate of the material on the third discharge belt.

[0041] After secondary separation, the material is conveyed from the third discharge belt to the secondary air separator. After being separated by the secondary air separator, metal debris such as stalks falls from the secondary sorting outlet. The remaining material after being separated by the secondary air separator is conveyed through the air conveying pipe to the secondary air separator outlet. The material at the secondary air separator outlet falls to the second discharge belt, which then conveys the material after secondary air separation to the next process.

[0042] It should be added that the materials on both the first and second discharge belts must be inspected by the tobacco structure detection system.

[0043] An online weighing and metering system is installed at the feeding front end of the primary air classifier. The main purpose is to ensure a balanced flow of material after drying, and also to ensure that there is enough material at the head and tail of the drying machine for air classification, thereby reducing breakage and ensuring high efficiency of air classification.

[0044] A side air inlet is provided on the lower left side of the primary air separator, and a lower air inlet is provided at the corresponding position of the primary sorting outlet. The airflow provided by the side air inlet and the lower air inlet is controlled by the damper of this application, that is, an adjustable controller is provided on the air duct of the primary air separator.

[0045] An online tobacco structure detection system is installed near the first discharge belt below the primary air separation outlet to obtain the actual purity of the material on the first discharge belt. A laser scanning online material flow test system is installed directly above the third discharge belt to obtain the flow rate on the third discharge belt, i.e., the flow rate of the material discharged from the primary sorting outlet.

[0046] An air supply port and a negative pressure sensor are installed on the air delivery duct of the secondary air separation system. The air supply port is used to provide air supply, and the negative pressure sensor is used to monitor the pressure inside the air delivery duct.

[0047] like Figure 2 As shown, this application proposes a method for adjusting a flexible tobacco air separation damper, comprising the following steps:

[0048] In step 210, the purity of the material on the first discharge belt is checked to see if it meets the requirements.

[0049] In some embodiments, the detection subject is an online tobacco structure detection system. By acquiring real-time tobacco shreds on the first discharge belt and taking pictures of the tobacco shreds, the online tobacco structure detection system processes the images using a built-in algorithm to obtain the actual purity of the tobacco shreds. Then, it compares the purity with the qualified threshold to determine whether the tobacco shreds are qualified, thus providing triggering conditions for executing the corresponding triggering action.

[0050] In some embodiments, an online weighing and metering system installed at the feed end of the primary air classifier can monitor the flow rate. If the monitored initial material flow rate is less than the first flow rate threshold, the damper is directly adjusted to 20%. That is, there is no need to perform the detection action to check whether the purity of the material on the first discharge belt is qualified, nor is there any need to perform a series of subsequent actions.

[0051] In some embodiments, if the monitored initial material flow rate is not less than the first flow rate threshold, a detection action is triggered, namely, detecting whether the purity of the material on the first discharge belt is qualified, detecting the fiber content of the material at the outlet of the sorted material and determining whether it exceeds the standard, and detecting whether the flow rate of the material on the third discharge belt exceeds the second flow rate threshold.

[0052] In step 220, if the purity of the material on the first discharge belt is not up to standard, the damper is adjusted to be larger.

[0053] In some embodiments, the purity of the material on the first discharge belt is not up to standard, that is, the air force of the side air intake and bottom air intake in the primary air classifier may not reach the necessary air force, resulting in the material purity not being high enough. Therefore, it is necessary to send an instruction to the controller that controls the damper, so that the controller controls the damper actuator to adjust the opening, such as from 60% to 80%.

[0054] In step 230, the fiber content of the material at the outlet of the sorted item is detected and it is determined whether it exceeds the standard.

[0055] In some embodiments, the primary sorting outlet originates from the processed initial material. After being monitored by an online weighing system, the initial material is conveyed to a feeding and equalizing vibrating trough. Following vibration, it is divided into two parts by side and bottom air intakes. One part may be conveyed by a feeding belt to the primary air separation outlet, while the other part may fall through the bottom air intake into a secondary separation chamber. After processing by needle rollers within the secondary separation chamber, the material falling from the primary sorting outlet is obtained. Figure 1 The detection device is not shown in the document. It should be noted that, whether it is the detection device here or the online tobacco structure detection system, online weighing and metering system, damper controller, and laser scanning online material flow testing system mentioned above, all of the above devices communicate with the central control unit, which can be a PLC.

[0056] In step 240, if the fiber content exceeds the standard, the damper is adjusted to a smaller size.

[0057] In some embodiments, the opening of the damper is adjusted from 60% to 40%.

[0058] In step 250, it is detected whether the flow rate of the material on the third discharge belt exceeds the second flow rate threshold.

[0059] In some embodiments, a laser scanning online material flow testing system is installed above the third discharge belt. This system acquires three-dimensional laser point data of high-density material under normal operation of the belt conveyor, thereby measuring the instantaneous flow rate of material on a normally operating belt conveyor. The relevant formulas include:

[0060] ;

[0061] In step 260, if the flow rate of the material on the third discharge belt exceeds the second flow rate threshold, the air supply force is increased, and it is determined whether the purity of the material on the second discharge belt is qualified.

[0062] In some embodiments, increasing the supply air force is also operated through the supply air controller, with air being supplied from the supply air inlet.

[0063] In step 270, if the tobacco is qualified, the corresponding supplementary air force is kept stable to allow for flexible air separation of qualified tobacco.

[0064] In some embodiments, by supplementing air, the purity of the material at the second discharge point can be made up to meet the standard, which is the most ideal state. When this state is achieved, the corresponding supplementing air force is kept running stably to flexibly separate qualified tobacco.

[0065] The purpose of the online weighing system involved in this application is to ensure that there is sufficient material at both the beginning and end of the material supply.

[0066] In some embodiments, at the end of a batch production run, when the flow rate significantly decreases and lasts for 30 seconds, and the flow rate is detected to be less than 200 kg / h, the damper is reduced in 5% increments, down to 20%. The specific increment is adjusted according to the specific scenario. When the signal for the start of the next batch arrives, the damper is directly adjusted back to its original state of 60%.

[0067] In some embodiments, when the purity of the material on the second discharge belt is less than 95%, the primary air separation system is activated, and the flow rate in the primary air separation system is adjusted from 5000 kg / h to 4000 kg / h via the damper.

[0068] In some embodiments, when the purity of the material on the second discharge belt is less than 95%, the primary air separation system is activated, and the opening of the damper of the primary air separation system is adjusted by means of the damper. The opening of the damper is adjusted from 60% to 80%, while the flow rate remains unchanged.

[0069] In some embodiments, when the purity of the material on the second discharge belt is less than 95%, the primary air separation system can be linked, and the damper and flow rate can be adjusted simultaneously. For example, the flow rate can be adjusted from 5000 kg / h to 4500 kg / h, and the damper can be increased from 60% to 70%.

[0070] By combining the above actions, the purity of the materials on the first and second material belts can be made to meet the qualified standards.

[0071] The secondary air separation system, in conjunction with the primary air separation system, aims to ensure that the purity of the materials on both the first and second discharge belts meets the qualification standard. When the material on the second discharge belt fails to meet the qualification standard, the dampers of the primary air separation system are adjusted to regulate the side and bottom air intake forces. At this time, the adjustment of the side and bottom air intake forces will not affect the purity of the materials on the first discharge belt from meeting the qualification standard.

[0072] Using this application after the tobacco leaf loosening and rehydration process can screen out impurities such as clumps, tobacco stems, metals, and stones.

[0073] Using this application after the rehydration process of expanded tobacco can screen out clumps, stems, dry ice blocks and other impurities, with virtually no breakage.

[0074] Using this application on the leaf-beating line can filter free leaflets of various sizes, thereby increasing the yield of large and medium-sized leaflets on the leaf-beating line.

[0075] Using this application after the leaf or stem expansion equipment can screen out clumps (agglomerates, washed balls, filament clumps, etc.) and most stem fragments, improving the purity of the leaf or stem fibers. It produces virtually no breakage.

[0076] Using this application after the dust collector in the cigarette making and packaging equipment can remove the tobacco shreds from the tobacco sticks for reuse (stick-shred separation).

[0077] Using this application before a tobacco stem washing or soaking machine can remove dust, hemp fibers, plastic strips, and hemp rope from tobacco stems, thereby improving the purity of the tobacco stems and reducing environmental pollution.

[0078] like Figure 3 As shown, this application also proposes an electronic device 300, including a processor 310, a storage device 320, and a communication bus 330;

[0079] Communication bus 330 is used to connect processor 310 and memory 320;

[0080] The processor 310 is used to execute a computer program stored in the memory 320 to implement one or more tobacco flexible air separation damper adjustment methods as described in the above embodiments.

[0081] This application also provides a computer-readable storage medium having a computer program stored thereon, the computer program being used to cause a computer to perform the methods as described in any of the above embodiments.

[0082] This application also provides a non-volatile readable storage medium storing one or more modules (programs). When these modules are applied to a device, they enable the device to execute the instructions included in Embodiment 1 of this application.

[0083] It should be noted that the computer-readable medium described above in this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution device, apparatus, or device. In this disclosure, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution device, apparatus, or apparatus. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0084] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device.

[0085] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0086] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using dedicated hardware-based means to perform the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0087] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A method for adjusting a flexible air separation damper for tobacco, characterized in that, The method includes: The purity of the material on the first discharge belt is tested to ensure it meets the requirements. The material on the first discharge belt is discharged from the primary air classifier outlet of the primary air classifier. If the purity of the material on the first discharge belt is not up to standard, the damper should be adjusted to be larger. A secondary separation box is installed at the bottom of the primary air separator, and a primary sorting outlet is installed on the secondary separation box. The fiber content of the material at the primary sorting outlet is detected and it is determined whether it exceeds the standard. If the fiber content exceeds the standard, the damper should be adjusted to a smaller size. The flow rate of the material on the third discharge belt is detected to exceed the second flow rate threshold. The material on the third discharge belt is the material discharged from the primary sorting outlet. The material on the third discharge belt is conveyed to the secondary air classifier for drift separation. The remaining material after drift separation by the secondary air classifier is conveyed through the air conveying pipe to the secondary air classifier outlet. The material at the secondary air classifier outlet falls onto the second discharge belt. If the flow rate of the material on the third discharge belt exceeds the second flow rate threshold, increase the make-up air force and determine whether the purity of the material on the second discharge belt is qualified. If qualified, maintain the corresponding supplementary air force to operate stably, and use flexible air separation to select qualified tobacco. Before detecting whether the purity of the material on the first discharge belt is qualified, the process also includes: Detect whether the initial material flow rate is less than the first flow rate threshold; If the flow rate is less than the first flow threshold, the damper is adjusted to 20%, and the detection of the purity of the material on the first discharge belt is no longer performed, nor are any subsequent actions performed; wherein, the initial material is the material intended to enter the primary air classifier.

2. The method for adjusting the flexible air separation damper for tobacco according to claim 1, characterized in that, If the purity of the material on the second discharge belt is greater than the first purity threshold but less than the qualified threshold, it is unqualified, and the replenishment air force is increased.

3. The method for adjusting the flexible air separation damper for tobacco according to claim 1, characterized in that, If the purity of the material on the second discharge belt is less than the first purity threshold, i.e. it is unqualified, the initial material flow rate is reduced, and the damper is not operated, i.e. it remains stationary.

4. The method for adjusting the flexible air separation damper for tobacco according to claim 1, characterized in that, If the purity of the material on the second discharge belt is less than the first purity threshold, i.e. it is unqualified, the initial material flow rate will not be adjusted, and the damper will be increased.

5. The method for adjusting the flexible air separation damper for tobacco according to claim 1, characterized in that, If the purity of the material on the second discharge belt is less than the first purity threshold, it is considered unqualified. At the same time, the flow rate of the initial material is reduced, and the damper is increased.

6. The method for adjusting the flexible air separation damper for tobacco according to claim 2, characterized in that, The acceptable threshold is 99%.

7. The method for adjusting the flexible air separation damper for tobacco according to claim 5, characterized in that, The first purity threshold is 95%. The flow rate of the initial material is reduced from 5000 kg / h to 4500 kg / h, and the damper is increased from 60% to 70%.

8. An electronic device, characterized in that, The electronic device includes: One or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement the tobacco flexible air separation damper adjustment method as described in any one of claims 1 to 7.

9. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by the computer's processor, causes the computer to perform the tobacco flexible air separation damper adjustment method as described in any one of claims 1 to 7.

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