Method for online detection of air content of a pulp

Abstract

The present application relates to a kind of methods for detecting the content of empty tube, determine the shape characteristic value and color value range of tobacco auxiliary material and the shape characteristic value and color value range of tobacco shred;Detection equipment is set on empty tube conveying line, the empty tube of set time period on empty tube conveying line is detected, and the detection image is transferred to controller;Controller is summarized according to the detection image involved in the detection image of received tobacco shred, and according to the tobacco shred parameter determined in advance, preliminary empty tube content of tobacco shred is calculated;Again, compared with the comparison empty tube content of tobacco shred of artificial detection, corresponding relationship is established, and the data of online detection empty tube content of tobacco shred is obtained.The technical scheme can penetrate the detection equipment of tobacco auxiliary material, image processing is carried out to the processed empty tube, and the amount of tobacco shred in set time period is calculated according to the tobacco shred parameter, the content of tobacco shred of empty tube is calculated, and the detection data is relatively timely through online detection, and it is convenient to provide guidance for the parameter setting of residual smoke processing procedure.

Description

A method for online detection of fiber content in empty tubes Technical Field

[0001] This invention belongs to the field of tobacco technology, and relates to online detection technology, specifically a method for online detection of the filament content in empty tobacco tubes. Background Technology

[0002] According to relevant regulations on tobacco waste management, cigarette factories are now imposing increasingly stringent requirements on the shred content of empty cigarette tubes in their residual tobacco processing workshops. The shred content of empty cigarette tubes has become a key indicator, but currently there is no online detection method for this shred content. Currently, detection relies on manual sampling and weighing, which is problematic because it is subject to significant human influence and is also slow and unreliable, making it difficult to provide timely guidance for online parameter settings. Summary of the Invention

[0003] The purpose of this invention is to provide a method for online detection of the filament content in empty tubes, in order to solve the problem that current residual smoke treatment lacks online detection of the filament content in empty tubes, which cannot provide timely guidance for online parameter settings.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A method for online detection of fiber content in empty tubes includes the following steps:

[0006] S1. Determine the shape characteristic value and color value range of tobacco auxiliary materials and the shape characteristic value and color value range of tobacco shreds;

[0007] S2. After being processed by the residual smoke treatment process, the smoke enters the empty smoke pipe conveyor line through the empty smoke pipe.

[0008] S3. The detection equipment installed on the air pipe conveyor line detects the air pipes passing through the air pipe conveyor line during a set time period and transmits the detection images to the controller.

[0009] S4. The controller summarizes the detected images involving tobacco shreds in the received detection images and calculates the preliminary empty tube shred content M1 based on the previously determined tobacco shred parameters.

[0010] S5. Sample the empty pipes on the empty pipe conveying line of step S3 for a set period of time, and obtain the empty pipe fiber content M2 through manual inspection; compare the difference Δ between M1 and M2, and determine:

[0011] If the Δ value is within the set range, the initial empty tube fiber content rate is determined to be the online detection data of the empty tube fiber content.

[0012] If the Δ value is greater than the maximum value of the set range, then M1-Δ is the online detection data of the filament content in the empty tube;

[0013] If the Δ value is less than the minimum value of the set range, then M1+Δ is the online detection data of the filament content in the empty tube.

[0014] Furthermore, the tobacco additives include at least one or two of cigarette paper and forming paper.

[0015] Furthermore, there is no overlap between the shape and color value ranges of tobacco shreds and the combined shape and color value ranges of tobacco by-products.

[0016] Furthermore, the shape of the tobacco shreds is different from that of the tobacco additives.

[0017] Furthermore, the detection equipment is capable of penetrating tobacco auxiliaries and obtaining images of tobacco shreds.

[0018] Furthermore, the detection device is one of a laser, a ray, or an imaging device.

[0019] Furthermore, the shape characteristics include at least the width, length, and density of the tobacco shreds.

[0020] The beneficial effects of this invention are:

[0021] This technical solution uses a detection device capable of penetrating tobacco auxiliaries to image the empty tobacco tubes after they have passed through the empty tobacco tube conveyor line. Based on the tobacco parameters, it calculates the amount of tobacco shreds for a set time period and calculates the tobacco content data in the empty tube. Through online detection, the detection data is relatively timely, which facilitates the setting of parameters for the residual tobacco treatment process. Detailed Implementation

[0022] The technical solutions of the present invention will be described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solutions of the present invention, and should not be construed as limiting the technical solutions of the present invention.

[0023] The residual smoke treatment process described in this application can be either an independent production line or a separate residual smoke treatment workshop, depending on the actual situation of the enterprise, and can be used specifically for the treatment of residual smoke.

[0024] Based on current technology, the treatment of residual cigarettes (referring only to tobacco segment treatment, excluding filter segment treatment) basically includes air blowing, swishing, or splitting techniques. Air blowing uses high-pressure air to blow the tobacco shreds from the cigarette paper tube, and then uses gravity to separate the cigarette paper tube and tobacco shreds. Swishing involves using rollers to swirl the waste cigarettes, separating the tobacco shreds from the cigarette. Splitting involves cutting the cigarette paper axially and then using vibration to separate the cigarette paper from the tobacco shreds. All three of these methods, and other methods may also be used, result in the problem of incomplete separation of tobacco shreds from the cigarette, leaving some tobacco shreds embedded in the cigarette paper.

[0025] The tobacco mentioned in this application refers to the blended tobacco that has been used in the rolling of cigarettes. According to conventional technology, the only difference between blended tobacco is the variety of tobacco or the subsequent processing (aging, flavoring, etc.). Its conventional parameters, such as tobacco width, length, thickness, and tobacco density (not referring to filling density), are basically the same.

[0026] The method for online detection of filament content in empty tubes according to this application includes the following steps:

[0027] S1. Determine the color value range of the tobacco additives and the current color value range of the tobacco shreds. This step is necessary because the parameters of the tobacco additives for different cigarette varieties are still different. Therefore, before conducting online testing, it is necessary to determine the color value range of the tobacco additives. The specific testing method is based on existing technology, so the applicant will not provide a detailed explanation.

[0028] This application includes two or three of the following: tobacco auxiliary materials: cigarette paper, forming paper, and forming filter rod.

[0029] S2. Take the material from the empty tobacco pipe conveyor belt, separate the tobacco shreds and tobacco auxiliary materials, and after imaging them separately, determine the numerical range of the shape characteristics of the tobacco auxiliary materials and the current numerical range of the shape characteristics of the tobacco shreds. This step is because the shape characteristics of the tobacco auxiliary materials are quite different from those of the tobacco shreds. Through steps S1 and S2, the tobacco shreds and auxiliary materials are distinguished. If there is an overlap, the detection method of this application is not applicable.

[0030] Meanwhile, in this step, the collected tobacco parameters, such as tobacco curl, length and profile temperature, are transmitted to the corresponding controller and stored in the controller for later comparison.

[0031] S3. The residual smoke treatment process involves the smoke entering the empty smoke pipe conveyor line. This step is existing technology, and the technical solution of this application does not involve any improvement or testing of this step. Therefore, the specific method of residual smoke treatment is partially described in the background technology of this application.

[0032] S4. A detection device installed on the empty smoke pipe conveyor line detects the empty smoke pipes passing through the conveyor line for a set time period and transmits the detection image to the controller. In the technical solution of this application, the detection device is usually installed above the empty smoke pipe conveyor line, but it can also be installed in other positions according to actual needs. In this embodiment, the length of the set time period can be set as needed, such as 5 seconds, 10 seconds, 30 seconds, 60 seconds, etc., and the length of the set time period does not affect the implementation of the technical solution of this application.

[0033] The detection device of this application is a device capable of penetrating tobacco auxiliaries and obtaining images of tobacco shreds, and can be one of laser, X-ray or imaging devices.

[0034] Because the tobacco shreds are either mixed in with the waste auxiliary materials after processing or wrapped in cigarette paper and not ejected when calculating the tobacco shred content of empty tubes, an imaging device is used to irradiate the material in the conveyor belt to obtain an image of the tobacco shreds. The tobacco shred content of the empty tube can then be calculated.

[0035] S5. The controller summarizes the received detection images containing tobacco shreds and calculates the preliminary empty tube tobacco shred content M1 based on the pre-determined tobacco shred parameters. Specifically, the calculation can be performed by summarizing the length, width, and density of the tobacco shreds to obtain the weight of the tobacco shreds for that period, and then comparing it with...

[0036] S6. Sample the empty pipes on the empty pipe conveying line of step S3 for a set period of time, and obtain the empty pipe fiber content M2 through manual inspection; compare the difference Δ between M1 and M2, and determine:

[0037] If the Δ value is within the set range, the initial empty tube fiber content rate is determined to be the online detection data of the empty tube fiber content.

[0038] If the Δ value is greater than the maximum value of the set range, then M1-Δ is the online detection data of the filament content in the empty tube;

[0039] If the Δ value is less than the minimum value of the set range, then M1+Δ is the online detection data of the filament content in the empty tube.

[0040] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, alterations, additions or substitutions made by those skilled in the art within the scope of the invention should be protected by the present invention.

Claims

1. A method for online detection of filament content in empty tubes, characterized in that, Includes the following steps: S1. Determine the shape and color value ranges of tobacco auxiliary materials and tobacco shreds; S2. After the residual tobacco treatment process, the tobacco shreds enter the empty tobacco shred conveyor line; S3. The detection equipment set on the empty tobacco shred conveyor line detects the empty tobacco shreds passing through the empty tobacco shred conveyor line for a set period of time and transmits the detection image to the controller. S4. The controller summarizes the received detection images involving tobacco shreds and calculates the preliminary empty tube shred content M1 based on the pre-determined tobacco shred parameters. S5. The controller samples the empty tubes on the empty tube conveyor line of step S3 for a set period of time and obtains the comparative empty tube shred content M2 through manual inspection. The difference Δ between M1 and M2 is compared, and the following is determined: if the Δ value is within the set range, the preliminary empty tube shred content is determined as the online detection empty tube shred content data; if the Δ value is greater than the maximum value of the set range, then M1-Δ is the online detection empty tube shred content data; if the Δ value is less than the minimum value of the set range, then M1+Δ is the online detection empty tube shred content data.

2. The method for online detection of filament content in empty tubes according to claim 1, characterized in that, The tobacco additives include at least one or two of cigarette paper and forming paper.

3. The method for online detection of filament content in empty tubes according to claim 2, characterized in that, There is no overlap between the shape and color value ranges of tobacco shreds and the combined shape and color value ranges of tobacco by-products.

4. The method for online detection of filament content in empty tubes according to claim 2, characterized in that, The shape of tobacco shreds is different from that of tobacco additives.

5. The method for online detection of filament content in empty tubes according to claim 1, characterized in that, The detection equipment is capable of penetrating tobacco auxiliaries and obtaining images of tobacco shreds.

6. The method for online detection of filament content in empty tubes according to claim 5, characterized in that, The detection device is one of laser, X-ray, or imaging equipment.

7. The method for online detection of filament content in empty tubes according to claim 1, characterized in that, Shape characteristics include at least the width, length, and density of the tobacco shreds.