Blockage detection method, device and equipment for feeding nozzle and storage medium

Abstract

The invention provides a blockage detection method, device and equipment for a feeding nozzle and a storage medium. The blockage detection method comprises the steps that the flow of feed liquid output from a feeding pump is obtained; determining a target operation frequency of the feed pump based on the flow and an expected flow; and based on the target operation frequency, the blocking state of the feeding nozzle is determined. By adopting the technical scheme provided by the invention, the blockage of the feeding nozzle can be detected and identified in time.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco leaf processing, and in particular to a method, device, equipment and storage medium for detecting blockage of a feeding nozzle. Background Art

[0002] Tobacco leaf shred processing is a key step in the cigarette manufacturing process. This includes slicing, loosening and rehydrating, leaf conditioning and feeding, leaf storage, shredding, leaf drying, and flavoring. The accuracy of leaf conditioning and feeding is a key process indicator in shred production. The precise application of liquid feed onto the tobacco leaves through the feed nozzles directly impacts the sensory quality of the finished cigarette. Currently, nozzle blockage is primarily monitored manually.

[0003] However, this was only noticed when the feed nozzle became completely clogged, causing the equipment to shut down, severely impacting the uniformity of the feed application. Summary of the Invention

[0004] In view of this, an embodiment of the present application provides a method and device for detecting blockage of a feeding nozzle, which adjusts the operating frequency of the feeding pump by monitoring the difference between the flow rate of the feed liquid and the expected flow rate, and detects the blockage state of the feeding nozzle based on the operating frequency, thereby realizing timely detection and identification of blockage of the feeding nozzle.

[0005] This application mainly includes the following aspects: In a first aspect, an embodiment of the present application provides a method for detecting clogging of a feeding nozzle, the method comprising: Obtain the flow rate of the feed liquid output from the feed pump; determining a target operating frequency of the feeding pump based on the flow rate and the expected flow rate; Based on the target operating frequency, a clogging state of the feed nozzle is determined.

[0006] Furthermore, determining the target operating frequency of the feeding pump based on the flow rate and the expected flow rate includes: If the difference between the flow rate and the expected flow rate is a negative value, the sum of the current operating frequency of the feeding pump and the frequency increase corresponding to the difference is determined as the target operating frequency of the feeding pump; If the difference between the flow rate and the expected flow rate is a positive value, the difference between the current operating frequency of the feeding pump and the frequency reduction amount corresponding to the difference is determined as the target operating frequency of the feeding pump; If the flow rate is the same as the expected flow rate, it is determined that the feeding pump maintains the current operating frequency.

[0007] Furthermore, the determining of the blockage state of the feeding nozzle based on the target operating frequency includes: If the target operating frequency of the feeding pump is greater than the preset frequency, it is determined that the feeding nozzle is clogged; If the target operating frequency of the feeding pump is not greater than the preset frequency, it is determined that the feeding nozzle is not clogged.

[0008] Furthermore, the blockage detection method further includes: If the target operating frequency of the feeding pump is not greater than the preset frequency, the feeding pump is controlled to operate at the target operating frequency so that the flow rate of the feed liquid output by the feeding pump reaches the expected flow rate.

[0009] Furthermore, if the target operating frequency of the feeding pump is greater than the preset frequency, then after determining that the feeding nozzle is clogged, the clog detection method further includes: After determining that the feeding nozzle is clogged, the control reminder device issues a clog reminder.

[0010] In a second aspect, an embodiment of the present application further provides a device for detecting a clogging of a feeding nozzle, the device comprising: An acquisition module is used to obtain the flow rate of the feed liquid output from the feeding pump; a frequency determination module, configured to determine a target operating frequency of the feeding pump based on the flow rate and an expected flow rate; The blockage detection module is used to determine the blockage state of the feeding nozzle based on the target operating frequency.

[0011] Furthermore, the frequency determination module is specifically configured to: If the difference between the flow rate and the expected flow rate is a negative value, the sum of the current operating frequency of the feeding pump and the frequency increase corresponding to the difference is determined as the target operating frequency of the feeding pump; If the difference between the flow rate and the expected flow rate is a positive value, the difference between the current operating frequency of the feeding pump and the frequency reduction amount corresponding to the difference is determined as the target operating frequency of the feeding pump; If the flow rate is the same as the expected flow rate, it is determined that the feeding pump maintains the current operating frequency.

[0012] Furthermore, the blockage detection module is specifically used to: If the target operating frequency of the feeding pump is greater than the preset frequency, it is determined that the feeding nozzle is clogged; If the target operating frequency of the feeding pump is not greater than the preset frequency, it is determined that the feeding nozzle is not clogged.

[0013] In a third aspect, an embodiment of the present application further provides an electronic device comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor to execute the steps of the method for detecting blockage of a feeding nozzle described in the first aspect or any possible embodiment of the first aspect.

[0014] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method for detecting blockage of a feeding nozzle described in the first aspect or any possible embodiment of the first aspect are executed.

[0015] The embodiments of the present application provide a method, device, equipment and storage medium for detecting the blockage of a feeding nozzle, which obtain the flow rate of the feed liquid output from a feeding pump; determine the target operating frequency of the feeding pump based on the flow rate and the expected flow rate; and determine the blockage state of the feeding nozzle based on the target operating frequency.

[0016] In this way, the operating frequency of the feeding pump is adjusted by monitoring the difference between the flow rate of the feed liquid and the expected flow rate, and the blockage state of the feeding nozzle is detected according to the operating frequency, thereby achieving timely detection and identification of the blockage of the feeding nozzle.

[0017] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A flow chart of a method for detecting clogging of a feeding nozzle provided in an embodiment of the present application is shown; Figure 2 One of the structural schematic diagrams of a feeding nozzle blockage detection device provided in an embodiment of the present application is shown; Figure 3 The second structural diagram of a feeding nozzle clogging detection device provided in an embodiment of the present application is shown; Figure 4 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of illustration and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn to scale. The flowcharts used in this application illustrate the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowcharts can be implemented out of sequence, and steps without logical context can be reversed or implemented simultaneously. In addition, those skilled in the art, under the guidance of the contents of this application, can add one or more other operations to the flowchart, or remove one or more operations from the flowchart.

[0021] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0022] The following methods, devices, electronic devices or computer-readable storage media of the embodiments of the present application can be applied to any scenario where clogging detection of a feeding nozzle is required. The embodiments of the present application are not limited to specific application scenarios. Any scheme using the clogging detection method and device of the feeding nozzle provided by the embodiments of the present application is within the scope of protection of this application.

[0023] It's worth noting that tobacco leaf shred processing is a critical step in the cigarette manufacturing process. This includes slicing, loosening and rehydrating, moistening and adding materials, storing, shredding, drying, and flavoring. The accuracy of moistening and adding materials is a key process indicator in shred production. The precise application of liquid feed onto the tobacco leaves through the feed nozzles directly impacts the sensory quality of the finished cigarettes. Currently, nozzle blockage is primarily monitored through manual inspection. However, complete nozzle blockage is only noticed when the equipment shuts down, severely impacting the uniformity of liquid feed application.

[0024] In response to the above problems, the embodiments of the present application propose a method and device for detecting the blockage of a feeding nozzle. The method adjusts the operating frequency of the feeding pump by monitoring the difference between the flow rate of the feed liquid and the expected flow rate, and detects the blockage state of the feeding nozzle based on the operating frequency, thereby realizing timely detection and identification of the blockage of the feeding nozzle.

[0025] To facilitate understanding of the present application, the technical solutions provided in the present application are described in detail below in conjunction with specific embodiments.

[0026] See also Figure 1 , Figure 1 This is a flow chart of a method for detecting clogging of a feeding nozzle provided in an embodiment of the present application.

[0027] like Figure 1 As shown in , the method for detecting the blockage of the feeding nozzle provided in the embodiment of the present application includes the following steps: Step S101, obtaining the flow rate of the feed liquid output from the feed pump.

[0028] In an embodiment of the present application, the feed liquid output by the feeding pump is a liquid obtained by filtering the initial feed liquid from the feed tank through a filter. The function of the feeding pump is to apply power to the received feed liquid. The powered feed liquid flows through the flow meter and is input into the feeding nozzle, and the feeding nozzle sprays the feed liquid onto the surface of the tobacco leaves after receiving the feed liquid. As an example, the flow rate of the feed liquid is obtained in the following manner: the flow meter detects the feed liquid flowing through to generate an analog flow signal, the analog flow signal is converted into a digital flow signal through a converter, the controller receives the digital flow signal from the converter, and the controller determines the flow rate of the feed liquid output from the feeding pump based on the digital flow signal. As an example, the flow meter can be an electromagnetic flow meter. The range of the flow meter is set according to the feeding ratio, and the range of the flow meter is positively correlated with the feeding ratio.

[0029] Step S102: determining a target operating frequency of the feeding pump based on the flow rate and the expected flow rate.

[0030] Here, the desired flow rate is the product of the instantaneous tobacco flow rate and the feed ratio. The tobacco flow rate is the flow rate of the tobacco leaves being fed with liquid in the tobacco processing line, and the feed ratio is the ratio of the weight of liquid to be applied to the tobacco leaves to the weight of the tobacco leaves produced. For example, the instantaneous tobacco flow rate could be 6000 kg / h, and the feed ratio could be 4%, resulting in a desired flow rate of 240 kg / h. The feed pump's operating frequency is the current change signal from the motor inverter in the feed pump.

[0031] As an example, regarding step S102, specifically, if the difference between the flow rate and the expected flow rate is a negative value, the sum of the current operating frequency of the feeding pump and the frequency increase corresponding to the difference is determined as the target operating frequency of the feeding pump; if the difference between the flow rate and the expected flow rate is a positive value, the difference between the current operating frequency of the feeding pump and the frequency reduction corresponding to the difference is determined as the target operating frequency of the feeding pump; if the flow rate is the same as the expected flow rate, it is determined that the feeding pump maintains the current operating frequency. Here, if the difference between the flow rate of the feed liquid output from the feeding pump and the expected flow rate is a negative value, it means that the actual flow rate of the feed liquid is less than the expected flow rate, and the feeding pump operating frequency needs to be increased; if the difference between the flow rate of the feed liquid output from the feeding pump and the expected flow rate is a positive value, it means that the actual flow rate of the feed liquid is greater than the expected flow rate, and the feeding pump operating frequency needs to be reduced; if the difference between the flow rate of the feed liquid output from the feeding pump and the expected flow rate is the same, it means that the actual flow rate of the feed liquid has reached the expected flow rate, and the feeding pump operating frequency is maintained.

[0032] Step S103: determining the blockage state of the feeding nozzle based on the target operating frequency.

[0033] As an example, regarding step S103, if the target operating frequency of the feeding pump is greater than the preset frequency, it is determined that the feeding nozzle is clogged; if the target operating frequency of the feeding pump is not greater than the preset frequency, it is determined that the feeding nozzle is not clogged. Here, the preset frequency is determined as follows: select the brand with the largest feeding ratio among all tobacco leaf brands, use water to simulate the feed liquid for feeding test, and set the feed liquid flow rate obtained at this time to the preset frequency. Among them, the brand is a specific classification or specification of the product, and each brand represents a specific product type. As an example, assume that the feeding ratio of the test is 4% and the preset frequency is 30Hz.

[0034] In an embodiment of the present application, if the target operating frequency of the feeding pump is not greater than a preset frequency, the feeding pump is controlled to operate at the target operating frequency so that the flow rate of the feed liquid output by the feeding pump reaches a desired flow rate. Here, as an example, the controller sends an operating instruction including the target operating frequency of the feeding pump to the frequency converter, and the frequency converter controls the feeding pump to operate at the target operating frequency in response to the operating instruction.

[0035] In an embodiment of the present application, after determining that the feeding nozzle is clogged, the control reminder device is used to issue a blockage reminder, so that the staff can clean the feeding nozzle in time. Production can only resume after cleaning the feeding nozzle. Here, the reminder device may include but is not limited to: an alarm and a human-machine interface. Specifically, after determining that the feeding nozzle is clogged, the controller generates a first alarm instruction for the feeding nozzle blockage alarm, and the alarm responds to the first alarm instruction to issue an alarm; after determining that the feeding nozzle is clogged, the controller generates a second alarm instruction containing the feeding nozzle blockage alarm information, and the human-machine interface responds to the second alarm instruction to display the feeding nozzle blockage alarm information on the human-machine interface. The alarm information may include but is not limited to the following: the location of the clogged feeding nozzle, the specific time when the alarm is triggered, and the steps for cleaning the feeding nozzle.

[0036] An embodiment of the present application provides a method for detecting clogging of a feeding nozzle, through which timely detection and identification of clogging of the feeding nozzle is achieved.

[0037] Based on the same application concept, the embodiment of the present application also provides a feeding nozzle blockage detection device corresponding to the feeding nozzle blockage detection method provided in the above embodiment. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the feeding nozzle blockage detection method in the above embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0038] See also Figure 2 and Figure 3 , Figure 2 This is one of the structural schematic diagrams of a feeding nozzle clogging detection device provided in an embodiment of the present application. Figure 3 This is the second structural schematic diagram of a clogging detection device for a feeding nozzle provided in an embodiment of the present application.

[0039] like Figure 2 As shown in FIG, the clogging detection device 210 for the feeding nozzle provided in the embodiment of the present application includes: An acquisition module 211 is used to acquire the flow rate of the feed liquid output from the feed pump; A frequency determination module 212 is configured to determine a target operating frequency of the feeding pump based on the flow rate and the expected flow rate; The clogging detection module 213 is configured to determine a clogging state of the feeding nozzle based on the target operating frequency.

[0040] Furthermore, the frequency determination module 212 is specifically configured to: If the difference between the flow rate and the expected flow rate is a negative value, the sum of the current operating frequency of the feeding pump and the frequency increase corresponding to the difference is determined as the target operating frequency of the feeding pump; If the difference between the flow rate and the expected flow rate is a positive value, the difference between the current operating frequency of the feeding pump and the frequency reduction amount corresponding to the difference is determined as the target operating frequency of the feeding pump; If the flow rate is the same as the expected flow rate, it is determined that the feeding pump maintains the current operating frequency.

[0041] Furthermore, the blockage detection module 213 is specifically configured to: If the target operating frequency of the feeding pump is greater than the preset frequency, it is determined that the feeding nozzle is clogged; If the target operating frequency of the feeding pump is not greater than the preset frequency, it is determined that the feeding nozzle is not clogged.

[0042] Further, such as Figure 3 As shown in , the blockage detection device 210 further includes: The regulating module 214 is configured to control the feeding pump to operate at the target operating frequency if the target operating frequency of the feeding pump is not greater than a preset frequency, so that the flow rate of the feed liquid output by the feeding pump reaches a desired flow rate.

[0043] Furthermore, the blockage detection device 210 further includes: The reminder module 215 is used to control the reminder device to issue a blockage reminder after determining that the feeding nozzle is blocked.

[0044] An embodiment of the present application provides a device for detecting a clogging of a feeding nozzle, through which timely detection and identification of clogging of a feeding nozzle can be achieved.

[0045] See also Figure 4 , Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0046] like Figure 4 As shown in FIG, the electronic device 400 includes a processor 410 , a memory 420 and a bus 430 .

[0047] The memory 420 stores machine-readable instructions executable by the processor 410. When the electronic device 400 is running, the processor 410 communicates with the memory 420 via the bus 430. When the machine-readable instructions are executed by the processor 410, the above-mentioned Figure 1 The specific implementation of the steps of the method for detecting the clogging of the feeding nozzle in the method embodiment shown can be found in the method embodiment, and will not be repeated here.

[0048] The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program can execute the above-mentioned Figure 1The specific implementation of the steps of the method for detecting the clogging of the feeding nozzle in the method embodiment shown can be found in the method embodiment, and will not be repeated here.

[0049] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0050] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0051] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0052] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0053] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A method for detecting clogging of a feeding nozzle, characterized in that: The blockage detection method comprises: Obtain the flow rate of the feed liquid output from the feed pump; determining a target operating frequency of the feeding pump based on the flow rate and the expected flow rate; Based on the target operating frequency, a clogging state of the feed nozzle is determined.

2. The congestion detection method according to claim 1, characterized in that: The step of determining a target operating frequency of the feeding pump based on the flow rate and the expected flow rate includes: If the difference between the flow rate and the expected flow rate is a negative value, the sum of the current operating frequency of the feeding pump and the frequency increase corresponding to the difference is determined as the target operating frequency of the feeding pump; If the difference between the flow rate and the expected flow rate is a positive value, the difference between the current operating frequency of the feeding pump and the frequency reduction amount corresponding to the difference is determined as the target operating frequency of the feeding pump; If the flow rate is the same as the expected flow rate, it is determined that the feeding pump maintains the current operating frequency.

3. The blockage detection method according to claim 1, wherein: The determining of the blockage state of the feeding nozzle based on the target operating frequency includes: If the target operating frequency of the feeding pump is greater than the preset frequency, it is determined that the feeding nozzle is clogged; If the target operating frequency of the feeding pump is not greater than the preset frequency, it is determined that the feeding nozzle is not clogged.

4. The congestion detection method according to claim 3, characterized in that: The blockage detection method further comprises: If the target operating frequency of the feeding pump is not greater than the preset frequency, the feeding pump is controlled to operate at the target operating frequency so that the flow rate of the feed liquid output by the feeding pump reaches the expected flow rate.

5. The congestion detection method according to claim 3, wherein: If the target operating frequency of the feeding pump is greater than the preset frequency, then it is determined that the feeding nozzle is clogged, the clogging detection method further includes: After determining that the feeding nozzle is clogged, the control reminder device issues a clog reminder.

6. A device for detecting clogging of a feeding nozzle, characterized in that: The blockage detection device comprises: An acquisition module is used to obtain the flow rate of the feed liquid output from the feeding pump; a frequency determination module, configured to determine a target operating frequency of the feeding pump based on the flow rate and an expected flow rate; The blockage detection module is used to determine the blockage state of the feeding nozzle based on the target operating frequency.

7. The clogging detection device according to claim 6, characterized in that: The frequency determination module is specifically used for: If the difference between the flow rate and the expected flow rate is a negative value, the sum of the current operating frequency of the feeding pump and the frequency increase corresponding to the difference is determined as the target operating frequency of the feeding pump; If the difference between the flow rate and the expected flow rate is a positive value, the difference between the current operating frequency of the feeding pump and the frequency reduction amount corresponding to the difference is determined as the target operating frequency of the feeding pump; If the flow rate is the same as the expected flow rate, it is determined that the feeding pump maintains the current operating frequency.

8. The clogging detection device according to claim 6, characterized in that: The blockage detection module is specifically used for: If the target operating frequency of the feeding pump is greater than the preset frequency, it is determined that the feeding nozzle is clogged; If the target operating frequency of the feeding pump is not greater than the preset frequency, it is determined that the feeding nozzle is not clogged.

9. An electronic device, characterized in that: include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the memory communicate through the bus, and the machine-readable instructions are executed by the processor to execute the steps of the method for detecting clogging of a feeding nozzle as described in any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for detecting clogging of a feeding nozzle according to any one of claims 1 to 5 are executed.

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