Method and device for analyzing influence of air leakage rate on cut tobacco dust content, and storage medium

Abstract

The application discloses a kind of analysis method, device, storage medium of the influence of leakage rate on cut tobacco content rate, the method includes: install electric valve on wind force sends silk back dust pipe, adjust valve opening degree simulates leakage condition;Record valve opening data, collect the wind pressure and temperature data of wind force silk back dust pipe under different valve opening degrees;According to the wind pressure and temperature data collected, calculate the leakage rate under different valve opening degrees;Under different valve opening degrees, sample after wind force silk, obtain the breakage rate of cut tobacco under different valve opening degrees;According to the data of leakage rate and cut tobacco breakage rate obtained under different valve opening degrees, fit out the function relationship formula of cut tobacco breakage rate and leakage rate.The application can simulate the leakage condition in the process of wind force silk sending by electric valve, obtain the leakage rate and cut tobacco breakage rate under different valve opening degrees, and then fit out the function relationship formula of cut tobacco breakage rate and leakage rate, and give early warning to the possible abnormality of breakage rate.

Description

Technical Field

[0001] This invention relates to an analytical method, apparatus, and storage medium for the effect of air leakage rate on the dust content of tobacco shreds, belonging to the field of tobacco wind-powered shredding technology. Background Technology

[0002] Cigarette quality can be divided into external quality and internal quality. The tobacco breakage rate is one of the important indicators for measuring the internal quality of cigarettes. Currently, domestic research on tobacco breakage mainly focuses on the tobacco processing stage, while systematic research on tobacco breakage in cigarette making machines is relatively scarce. Regarding tobacco breakage in cigarette making machines, the main focus is on the impact of pneumatic feeding on tobacco breakage. Related studies have proposed that wind speed is the process parameter with the greatest impact on tobacco breakage during pneumatic feeding.

[0003] However, with the development of technology, it is now possible to quickly and accurately adjust the wind speed during the tobacco conveying process. For example, an adaptive control method for a wind-powered tobacco conveying system, published in CN113974207A, can achieve precise adjustment of the wind speed within 18±0.5m / s. Therefore, the influence of wind speed on the tobacco breakage rate tends to be stable.

[0004] Given the limited hardware constraints of the existing tobacco feeding pipeline layout and the number of pipe joints, air leakage in the pneumatic conveying pipeline is unpredictable. Leakage affects the air velocity, which in turn affects the breakage rate and consequently the internal quality of cigarettes. Currently, the impact of leakage rate on tobacco breakage rate has not been systematically studied. Therefore, to improve the internal quality of cigarettes, there is an urgent need for an analytical method to study the impact of leakage rate on tobacco dust content. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an analytical method, device, and storage medium for the influence of air leakage rate on tobacco dust content. By simulating air leakage during the pneumatic feeding process using an electric valve, the air leakage rate and tobacco breakage rate under different valve openings are obtained. Furthermore, a functional relationship between the tobacco breakage rate and the air leakage rate is fitted, and an early warning can be given for possible abnormalities in the tobacco breakage rate. This enables real-time monitoring of the air leakage rate and early warning of possible abnormalities in the tobacco breakage rate during the pneumatic feeding process, thereby improving cigarette quality.

[0006] To achieve the above objectives, the present invention is implemented using the following technical solution:

[0007] In a first aspect, the present invention provides an analytical method for the effect of air leakage rate on the dust content of tobacco shreds, the method comprising:

[0008] An electric valve was installed on the wind-powered yarn feeding dust return pipe, and the valve opening was adjusted to simulate air leakage.

[0009] Record valve opening data and collect air pressure and temperature data of the air-powered wire feeding and dust return pipe under different valve opening degrees;

[0010] Based on the collected wind pressure and temperature data, calculate the leakage rate under different valve opening degrees;

[0011] Sampling of tobacco shreds after wind-powered feeding was conducted under different valve openings to obtain the breakage rate of tobacco shreds under different valve openings;

[0012] Based on the data of air leakage rate and tobacco breakage rate obtained under different valve openings, a functional relationship between tobacco breakage rate and air leakage rate is fitted.

[0013] Based on the functional relationship between the tobacco breakage rate and the air leakage rate obtained from the fitting, the air leakage rate when the tobacco breakage rate fails to meet the threshold is obtained, and this air leakage rate is used as the judgment value for early warning of abnormal tobacco breakage rate.

[0014] Furthermore, the method for acquiring the wind pressure and temperature data includes:

[0015] A pressure sensor is installed on the wind-powered wire feeding dust return pipe to collect the wind pressure of the dust return pipe in real time;

[0016] A temperature sensor is installed on the wind-powered yarn feeding dust return pipe to collect the temperature of the dust return pipe in real time.

[0017] Furthermore, the leakage rate is calculated using the following formula:

[0018]

[0019] In the formula: S is the air leakage rate, P1 represents the set air pressure value of the air-powered tobacco feeding system, P2 represents the air pressure value measured on the dust return pipe, t1 represents the temperature at the beginning of the air-powered tobacco feeding, and t2 represents the temperature at the end of the air-powered tobacco feeding.

[0020] Furthermore, the breakage rate of the tobacco shreds is calculated using the following formula:

[0021]

[0022] In the formula: T sh The breakage rate is given by m1, which is the mass of the sample collected through a 1.00 mm sieve in grams; M is the total mass of the sample taken in grams.

[0023] Furthermore, the opening range of the electric valve is 0%-100%.

[0024] Secondly, the present invention provides an analytical apparatus for analyzing the effect of air leakage rate on the dust content of tobacco shreds, the apparatus comprising:

[0025] Control unit: Used to control whether the valve opens or not and the opening range, simulating air leakage;

[0026] Storage unit: Used to store valve opening data and temperature and air pressure data within each opening range;

[0027] Crushing rate input module: used to transmit crushing rate data for each valve opening degree to the storage unit;

[0028] Calculation unit: used to calculate the leakage rate of each valve opening degree based on the wind pressure and temperature data obtained from the storage unit, and to fit the functional relationship between the breakage rate and the leakage rate based on the breakage rate data of each valve opening degree in the storage unit.

[0029] Early warning unit: Based on the fitted functional relationship between tobacco breakage rate and leakage rate, the early warning unit inputs the leakage rate corresponding to the threshold when the tobacco breakage rate fails to meet the standard into the storage unit in advance. The early warning unit compares the current leakage rate with the leakage rate corresponding to the threshold when the tobacco breakage rate fails to meet the standard in real time. When the leakage rate exceeds the threshold range, an alarm is issued.

[0030] Thirdly, the present invention provides an analytical device for the effect of air leakage rate of wind-powered tobacco feeding on the dust content of tobacco shreds, including a processor and a storage medium;

[0031] The storage medium is used to store instructions;

[0032] The processor is configured to operate according to the instructions to perform the steps of the above method.

[0033] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, characterized in that the program, when executed by a processor, implements the steps of the above-described method.

[0034] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: By adjusting the valve opening to simulate air leakage, and collecting wind pressure and temperature data under each valve opening, the air leakage rate under different valves is calculated. Furthermore, samples of tobacco shreds under each valve opening are taken to obtain the corresponding breakage rate. Based on the air leakage rate and tobacco breakage rate data obtained under different valve openings, a functional relationship between the tobacco breakage rate and the air leakage rate is fitted. Then, based on the fitted functional relationship, the air leakage rate at which the tobacco breakage rate fails to meet the threshold is determined. This air leakage rate is used as a judgment value for early warning of abnormal tobacco breakage rate, thereby achieving real-time monitoring of the air leakage rate and early warning of potential abnormalities in the tobacco breakage rate during wind-powered tobacco feeding, thus improving cigarette quality. Attached Figure Description

[0035] Figure 1 This is a flowchart of an analytical method for the effect of air leakage rate on tobacco dust content, provided in Example 1.

[0036] Figure 2 This is a schematic diagram of an analytical device for analyzing the effect of air leakage rate on tobacco dust content, provided in Example 2. Detailed Implementation

[0037] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0038] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] Example 1:

[0040] like Figure 1 The flowchart shown is a method for analyzing the effect of air leakage rate on tobacco dust content according to an embodiment of the present invention. This flowchart only illustrates the logical sequence of the method described in this embodiment. Under the premise of no conflict, in other possible embodiments of the present invention, different methods may be used. Figure 1 Perform the steps shown or described in the order indicated. See also Figure 1 The method implemented in this way specifically includes the following steps:

[0041] Step A: Install an electric valve on the air-powered yarn feeding dust return pipe and adjust the valve opening to simulate air leakage.

[0042] Step B: Record valve opening data and collect air pressure and temperature data of the air-powered yarn feeding and dust return pipe under different valve opening degrees;

[0043] Step C: Calculate the leakage rate under different valve opening degrees based on the collected wind pressure and temperature data;

[0044] Step D: Sample the tobacco after it is fed by the wind under different valve openings to obtain the breakage rate of the tobacco under different valve openings;

[0045] Step E: Based on the data of leakage rate and tobacco breakage rate obtained under different valve openings, fit the functional relationship between tobacco breakage rate and leakage rate;

[0046] Step F: Based on the functional relationship between the tobacco breakage rate and the air leakage rate obtained from the fitting, the air leakage rate when the tobacco breakage rate fails to meet the threshold is obtained, and this air leakage rate is used as the judgment value for early warning of abnormal tobacco breakage rate.

[0047] It should be noted that, in order to maximize the accuracy of simulating air leakage by adjusting the valve opening, the electric valve in this embodiment can be a high-precision valve, specifically a high-precision pneumatic diaphragm single-seat regulating valve of model JG10T2; however, it is not limited to this, and other models of valves can also be used, as long as the accuracy of simulating air leakage can be guaranteed.

[0048] Step ba: To calculate the leakage rate based on temperature and wind pressure, the method for acquiring the wind pressure and temperature data includes:

[0049] A pressure sensor is installed on the wind-powered yarn feeding dust return pipe to collect the wind pressure value of the dust return pipe under the opening degree of each valve;

[0050] Temperature sensors are installed on the air-powered yarn feeding dust return pipe to collect the temperature at the beginning and end of the air-powered yarn feeding process under the opening degree of each valve.

[0051] Step ca: After collecting the air pressure and temperature data at the dust return pipe of the air-powered wire feeding system under different valve openings, the leakage rate for the corresponding valve opening can be calculated. Since the temperature data at the beginning and end of the air-powered wire feeding needs to be considered, the leakage rate is calculated using the following formula:

[0052]

[0053] In the formula: S is the air leakage rate, P1 represents the set air pressure value of the air-powered tobacco feeding system, P2 represents the air pressure value measured on the dust return pipe, t1 represents the temperature at the beginning of the air-powered tobacco feeding, and t2 represents the temperature at the end of the air-powered tobacco feeding.

[0054] Step da: According to tobacco industry standard YC / T178-2003, the breakage rate of the tobacco shreds is calculated using the following formula:

[0055]

[0056] In the formula: T sh The breakage rate is given by m1, which is the mass of the sample collected under a 1.00 mm sieve in grams; M is the total mass of the sample taken in grams. The steps of sample collection and tobacco shredding screening are carried out in accordance with the determination method specified in industry standard YC / T178-2003.

[0057] Step aa: To simulate as many leakage scenarios as possible, the opening range of the electric valve is 0%-100%.

[0058] According to the analysis method provided in this embodiment, air leakage is simulated by adjusting the valve opening, and wind pressure and temperature data are collected under each valve opening. The air leakage rate under different valves is calculated, and the tobacco shreds under each valve opening are sampled to obtain the corresponding breakage rate. Based on the air leakage rate and tobacco breakage rate data obtained under different valve openings, a functional relationship between the tobacco breakage rate and the air leakage rate is fitted. Based on the fitted functional relationship, the air leakage rate when the tobacco breakage rate fails to meet the threshold is obtained, and this air leakage rate is used as the judgment value for early warning of abnormal tobacco breakage rate.

[0059] Example 2:

[0060] like Figure 2 The image shows an analytical device for analyzing the effect of air leakage rate on the dust content of tobacco shreds, provided by an embodiment of the present invention. It can be used to implement the analytical method for analyzing the effect of air leakage rate on the dust content of tobacco shreds described in Embodiment 1. The analytical device includes:

[0061] Control unit: Used to control whether the valve opens or not and the opening range, simulating air leakage;

[0062] Storage unit: Used to store valve opening data and temperature and air pressure data within each opening range;

[0063] Crushing rate input module: used to transmit crushing rate data for each valve opening degree to the storage unit;

[0064] Calculation unit: used to calculate the leakage rate of each valve opening degree based on the wind pressure and temperature data obtained from the storage unit, and to fit the functional relationship between the breakage rate and the leakage rate based on the breakage rate data of each valve opening degree in the storage unit.

[0065] Early warning unit: Based on the fitted functional relationship between tobacco breakage rate and leakage rate, the early warning unit inputs the leakage rate corresponding to the threshold when the tobacco breakage rate fails to meet the standard into the storage unit in advance. The early warning unit compares the current leakage rate with the leakage rate corresponding to the threshold when the tobacco breakage rate fails to meet the standard in real time. When the leakage rate exceeds the threshold range, an alarm is issued.

[0066] Example 3:

[0067] This invention also provides an analytical device for analyzing the effect of air leakage rate on tobacco dust content, which can be used to implement the steps of the method described in Embodiment 1, and includes a processor and a storage medium;

[0068] The storage medium is used to store instructions;

[0069] The processor is configured to operate according to the instructions to perform the steps of the following method:

[0070] An electric valve was installed on the wind-powered yarn feeding dust return pipe, and the valve opening was adjusted to simulate air leakage.

[0071] Record valve opening data and collect air pressure and temperature data of the air-powered wire feeding and dust return pipe under different valve opening degrees;

[0072] Based on the collected wind pressure and temperature data, calculate the leakage rate under different valve opening degrees;

[0073] Sampling of tobacco shreds after wind-powered feeding was conducted under different valve openings to obtain the breakage rate of tobacco shreds under different valve openings;

[0074] Based on the data of air leakage rate and tobacco breakage rate obtained under different valve openings, a functional relationship between tobacco breakage rate and air leakage rate is fitted.

[0075] Based on the functional relationship between the tobacco breakage rate and the air leakage rate obtained from the fitting, the air leakage rate when the tobacco breakage rate fails to meet the threshold is obtained, and this air leakage rate is used as the judgment value for early warning of abnormal tobacco breakage rate.

[0076] For details of each step in this embodiment, please refer to Embodiment 1, which will not be repeated here. Since this embodiment adopts the same technical concept as Embodiment 1, it also possesses the technical effects described in Embodiment 1.

[0077] Example 4:

[0078] This invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the following method:

[0079] An electric valve was installed on the wind-powered yarn feeding dust return pipe, and the valve opening was adjusted to simulate air leakage.

[0080] Record valve opening data and collect air pressure and temperature data of the air-powered wire feeding and dust return pipe under different valve opening degrees;

[0081] Based on the collected wind pressure and temperature data, calculate the leakage rate under different valve opening degrees;

[0082] Sampling of tobacco shreds after wind-powered feeding was conducted under different valve openings to obtain the breakage rate of tobacco shreds under different valve openings;

[0083] Based on the data of air leakage rate and tobacco breakage rate obtained under different valve openings, a functional relationship between tobacco breakage rate and air leakage rate is fitted.

[0084] Based on the functional relationship between the tobacco breakage rate and the air leakage rate obtained from the fitting, the air leakage rate when the tobacco breakage rate fails to meet the threshold is obtained, and this air leakage rate is used as the judgment value for early warning of abnormal tobacco breakage rate.

[0085] For details of each step in this embodiment, please refer to Embodiment 1, which will not be repeated here. Since this embodiment adopts the same technical concept as Embodiment 1, it also possesses the technical effects described in Embodiment 1.

[0086] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0087] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0088] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0089] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0090] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method of analysing the effect of air leakage rate on cut filler content, characterised in that, The method comprises: installing an electric valve on the air-assisted cut tobacco return pipe to simulate air leakage by adjusting the opening of the valve; recording the opening data of the valve, collecting the air pressure and temperature data of the air-assisted cut tobacco return pipe under different valve openings; calculating the air leakage rate under different valve openings according to the collected air pressure and temperature data; sampling the cut tobacco after air-assisted cut tobacco under different valve openings to obtain the cut tobacco breakage rate under different valve openings; fitting a functional relationship between the cut tobacco breakage rate and the air leakage rate according to the data of the air leakage rate and the cut tobacco breakage rate under different valve openings; obtaining the air leakage rate when the cut tobacco breakage rate is unqualified threshold value according to the fitted functional relationship between the cut tobacco breakage rate and the air leakage rate, and taking the air leakage rate as the judgment value for early warning of abnormal cut tobacco breakage rate.

2. The method of claim 1, wherein the method is used to analyze the effect of the air leakage rate on the cut filler content, characterized in that, The method for collecting the air pressure and temperature data comprises: installing a pressure sensor on the air-assisted cut tobacco return pipe to collect the air pressure value of the return pipe under each valve opening; installing a temperature sensor on the air-assisted cut tobacco return pipe to collect the temperature at the beginning and end of air-assisted cut tobacco under each valve opening.

3. The method of claim 1 or 2, wherein the method is used to analyse the effect of the rate of leakage on the filler content of the tobacco rod. The air leakage rate is calculated by the following formula: In the formula, S is the air leakage rate, P1 represents the set air pressure value of the air-assisted cut tobacco system, P2 represents the measured air pressure value on the return pipe, t1 represents the temperature at the beginning of air-assisted cut tobacco, and t2 represents the temperature at the end of air-assisted cut tobacco.

4. The method of claim 1, wherein the method is used to analyze the effect of the air leakage rate on the cut filler content, characterized in that, The cut tobacco breakage rate is calculated by the following formula: In the formula: T sh is the crushing rate, m1 is the mass of the sample collected under a 1.00 mm screen, in grams; M is the total mass of the sample taken, in grams.

5. The method of claim 1, wherein the method is used to analyze the effect of the air leakage rate on the cut filler content, and The opening range of the electric valve is 0%-100%.

6. An apparatus for analyzing the effect of air leakage rate on the cut filler content of tobacco, characterized in that, The device comprises: a control unit for controlling whether the valve is opened and the opening range to simulate air leakage; a storage unit for storing the opening data of the valve and the temperature and air pressure data under each opening range; a breakage rate input module for transmitting the breakage rate data under each valve opening to the storage unit; a calculation unit for calculating the air leakage rate under each valve opening according to the air pressure and temperature data obtained from the storage unit, and fitting a functional relationship between the breakage rate and the air leakage rate according to the breakage rate data under each valve opening in the storage unit; an early warning unit for inputting the air leakage rate corresponding to the unqualified threshold value of the cut tobacco breakage rate to the storage unit in advance according to the fitted functional relationship between the cut tobacco breakage rate and the air leakage rate, and the early warning unit compares the current air leakage rate with the air leakage rate corresponding to the unqualified threshold value of the cut tobacco breakage rate in real time, and issues an alarm when the air leakage rate exceeds the threshold range.

7. An analytical device for analyzing the effect of air leakage rate in pneumatic tobacco feeding on the dust content of tobacco shreds, characterized in that, a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to perform the steps of the method according to any one of claims 1-5.

8. A computer readable storage medium having stored thereon a computer program, characterized in that The program is executed by the processor to implement the steps of the method according to any one of claims 1-5.

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