Tobacco leaf layered proportioning feeding method and device

Abstract

The invention discloses a tobacco leaf layered proportioning feeding method and device. The method comprises the steps that layered feeding is conducted, specifically, tobacco leaf raw materials of different grades in a module formula are put into independent feeding belts respectively; feeding amount real-time regulation and control: collecting feeding amount data of each feeding belt in real time, and regulating and controlling the feeding amount of each feeding belt in real time according to the collected feeding amount data and a preset formula proportion; primary mixing in the bin: the materials of all grades fall into a gathering belt through the corresponding feeding belts and are conveyed to the feeding bin through the gathering belt; according to the tobacco leaf layered proportioning feeding method and device, the feeding amount data of each feeding belt are collected in real time, and the feeding amount of each feeding belt is regulated and controlled in real time according to the feeding amount data and the preset formula proportion, so that accurate proportioning of each grade of tobacco leaves is achieved, the requirement for operators is low, and the production efficiency is improved. It is ensured that the raw material ratio in each feeding period meets the production requirement, and the processing uniformity of the finished tobacco lamina can be remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tobacco processing, and more particularly to a tobacco layered proportioning feeding method and device. BACKGROUND

[0002] In the tobacco redrying and processing process, the mixing uniformity plays a key role in product quality. The control source of the mixing uniformity is in the feeding link. The existing tobacco feeding methods mostly rely on manual operation, and the control of the feeding weight is relatively rough, so that the initial state of the tobacco entering the mixing area is not uniform, which leads to certain differences in the chemical composition and physical properties of the same batch of tobacco, affecting the taste consistency and stability of the subsequent cigarette products, and being difficult to meet the growing demand for high-quality tobacco product production.

[0003] Therefore, there is an urgent need for a tobacco layered proportioning feeding method and device. SUMMARY

[0004] The present application aims to provide a tobacco layered proportioning feeding method and device to solve the above-mentioned problems in the prior art, effectively reduce the proportioning error, and improve the completeness and accuracy of the module formula by real-time monitoring and regulating the feeding amount of each feeding belt. At the same time, the uniformity of the online processing of tobacco is greatly improved by using an auxiliary air blowing device to blow and mix different grades of materials.

[0005] The present application provides a tobacco layered proportioning feeding method, which comprises:

[0006] Layered feeding: different grades of tobacco raw materials in the module formula are respectively fed into independent feeding belts;

[0007] Real-time feeding amount regulation: the feeding amount data of each feeding belt are collected in real time, and the feeding amount of each feeding belt is regulated in real time according to the collected feeding amount data and the preset formula proportion;

[0008] In-bin preliminary mixing: each grade of material falls into a collection belt through the corresponding feeding belt, and is conveyed to a feeding bin through the collection belt.

[0009] The tobacco layered proportioning feeding method described above, wherein preferably, in the layered feeding process, the number of feeding belts is 10-20, and the speed of each feeding belt is consistent, being 3-10 m / min.

[0010] The tobacco layered proportioning feeding method described above, wherein preferably, the real-time feeding amount regulation comprises:

[0011] Step S21: During the feeding process, the electronic belt scale arranged at each feeding point of each feeding belt is used to collect the feeding amount data of single-grade tobacco leaves in real time, and the feeding amount data is sent to the control system for summarization. There are n grades of tobacco leaves in the formula, and the total feeding amount of the i th grade of tobacco leaves is denoted as x i ;

[0012] Step S22: The control system calculates the maximum formula feeding basis of a single feeding period based on the current feeding amount collection data of each grade of tobacco leaves.

[0013] Step S23: Calculate the required supplement weight of each grade of tobacco leaves and synchronize the supplement weight data to the display screen of each corresponding feeding belt.

[0014] Step S24: At the supplement point of each feeding belt, supplement according to the supplement weight display result on the display screen.

[0015] The tobacco leaf layered proportioning feeding method described above, wherein preferably, the step S22: the control system calculates the maximum formula feeding basis of a single feeding period based on the current feeding amount collection data of each grade of tobacco leaves, comprises:

[0016] Combining the module formula target proportion p i , according to the principle of the long board theory, the maximum formula feeding basis T of a single feeding period is calculated by the following formula, T= .

[0017] The tobacco leaf layered proportioning feeding method described above, wherein preferably, in the step S23, the supplement weight y i ,

[0018] y i = .

[0019] The tobacco leaf layered proportioning feeding method described above, wherein preferably, a plurality of feeding points and one supplement point are distributed on each feeding belt, the number of feeding points corresponding to each feeding belt is 5-10; the supplement point is located downstream of each feeding point along the conveying direction of tobacco materials; an electronic belt scale is arranged below each feeding point and the supplement point of each feeding belt; the display screen of each feeding belt is arranged above the corresponding supplement point.

[0020] The control system comprises a PLC controller, and the electronic belt scale and the display screen corresponding to each feeding point and the supplement point are connected to the control system.

[0021] The tobacco leaf layered proportioning feeding method described above, wherein preferably, the in-bin initial mixing comprises:

[0022] The material on the collecting belt falls into the feeding bin through the chute of the feeding bin;

[0023] After the material falls into the feeding bin, the material entering the feeding bin is blown away by the air blowing device arranged in the feeding bin.

[0024] The tobacco leaf layered proportioning feeding method as described above, preferably, in the initial mixing process in the bin, the speed of the collecting belt is not lower than the speed of the feeding belt, and the speed of the collecting belt is set to 10-15 m / min.

[0025] Correspondingly, the application also provides a tobacco leaf layered proportioning feeding device using the above method, comprising a conveying table, a plurality of feeding belts and a collecting belt are arranged on the conveying table, each feeding belt is used to receive tobacco leaf material of different grades, the collecting belt is used to collect the tobacco leaf material on each feeding belt, the end of the collecting belt is provided with a chute in an inclined direction, and the end of the chute is connected with a feeding bin.

[0026] The tobacco leaf layered proportioning feeding device as described above, preferably, each feeding belt is arranged in parallel, and the collecting belt is perpendicular to each feeding belt.

[0027] A plurality of feeding points and a supplement point are distributed on each feeding belt, the number of the feeding points corresponding to each feeding belt is 5-10, the supplement point is located downstream of each feeding point in the conveying direction of the tobacco leaf material, an independent electronic belt scale is arranged below each feeding point and the supplement point, which is used to monitor the feeding amount of the material, and a display screen is arranged above the supplement point.

[0028] The electronic belt scale corresponding to each feeding point and the display screen are connected with a control system.

[0029] The feeding bin comprises a feeding port located at the top of the feeding bin and a discharging port located at the bottom of the feeding bin, an air blowing device is arranged in the feeding bin, the air blowing device comprises air pipes arranged on both sides of the inner wall of the feeding bin in the vertical direction, a plurality of air mixing nozzles are arranged on the air pipes, and the air pipes are connected with a fan.

[0030] The application provides a tobacco layered proportioning feeding method and device, which realizes accurate proportioning of tobacco of each grade, has low requirement on operators, ensures that the proportioning of raw materials in each feeding period meets production requirements, can significantly improve the processing uniformity of finished cut tobacco, realizes real-time collection of feeding amount data of each feeding belt, and realizes real-time regulation and control of the feeding amount of each feeding belt according to the feeding amount data and a preset formula proportion, thereby realizing accurate proportioning of tobacco of each grade, having low requirement on operators, ensuring that the proportioning of raw materials in each feeding period meets production requirements, and significantly improving the processing uniformity of finished cut tobacco; the difference between the actual feeding proportion and the formula target proportion is obtained in real time, and the supplement weight of tobacco of each grade is calculated, so that the operator can supplement according to the calculation and display results of the supplement weight; meanwhile, different grades of tobacco materials in the feeding bin are mixed, which significantly improves the accuracy of tobacco feeding and the uniformity of processing; when the tobacco materials fall into the feeding bin, the entering materials can be blown away by the air blowing device, which is beneficial to the full mixing of tobacco materials of different grades. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to make the object, technical scheme and advantages of the application clearer, the application will be further described below with reference to the drawings, in which:

[0032] Figure 1 A flowchart of the tobacco layered proportioning feeding method embodiment provided by the application;

[0033] Figure 2 A logic diagram of real-time regulation and control of the feeding amount;

[0034] Figure 3 A perspective structural schematic diagram of the tobacco layered proportioning feeding device embodiment provided by the application;

[0035] Figure 4 A top view of the tobacco layered proportioning feeding device embodiment provided by the application;

[0036] Figure 5 A structural schematic diagram of the feeding belt;

[0037] Figure 6 A structural schematic diagram of the feeding bin.

[0038] Explanation of reference signs: 1-conveying table; 2-feeding belt; 3-gathering belt; 4-chute; 5-feeding bin; 6-feeding point; 7-supplementing point; 8-electronic belt scale; 9-control system; 10-display screen; 51-feeding port; 52-air blowing device; 53-fan; 54-discharging port. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses. The disclosure can take many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that the relative arrangement of components and steps, the components of materials, numerical expressions, and numerical values set forth in these embodiments are to be interpreted as merely exemplary, rather than as a limitation unless otherwise specifically stated.

[0040] The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different parts. The terms "include" or "contain" and similar terms mean that the elements before the terms encompass the elements listed after the terms, and do not exclude the possibility of also encompassing other elements. "Up", "down", and the like are used only to indicate relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship can also change accordingly.

[0041] In the present disclosure, when it is described that a specific component is located between a first component and a second component, there can be an intervening component between the specific component and the first component or the second component, or there can be no intervening component. When it is described that a specific component is connected to other components, the specific component can be directly connected to the other components without an intervening component, or can not be directly connected to the other components with an intervening component.

[0042] All terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as those understood by a person of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary should be interpreted to have meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or excessively formalized sense, unless otherwise specifically defined herein.

[0043] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification where appropriate.

[0044] As Figures 1-2 The embodiment of the present application provides a tobacco layering and proportioning feeding method, which is realized based on a tobacco layering and proportioning feeding device, as shown in Figures 3-6As shown, the tobacco layered proportioning feeding device comprises a conveying table 1, a plurality of feeding belts 2 and a collecting belt 3 are arranged on the conveying table 1, each feeding belt 2 is used for receiving tobacco material of different grades, and the collecting belt 3 is used for collecting the tobacco material on each feeding belt 2. An end of the collecting belt 3 is provided with a chute 4 in an inclined direction, and an end of the chute 4 is connected with a feeding bin 5.

[0045] Preferably, each feeding belt 2 is arranged in parallel, and the collecting belt 3 is perpendicular to each feeding belt 2.

[0046] Further, the electronic belt scale 8 corresponding to each feeding point 6 and the display screen 10 are connected with a control system 9.

[0047] Further, the feeding bin 5 comprises a feeding port 51 at the top of the feeding bin 5 and a discharging port 54 at the bottom of the feeding bin 5, an air spraying device 52 is arranged in the feeding bin 5, the air spraying device 52 comprises air pipes arranged on both sides of the inner wall of the feeding bin 5 in the vertical direction, a plurality of air mixing nozzles are arranged on the air pipes, and the air spraying device 52 is connected with a fan 53. The tobacco material on the collecting belt 3 falls into the feeding port 51 of the feeding bin through the chute 4. After the material falls into the feeding bin 5, the entering material is blown away by the air spraying device 52, which is beneficial to the full mixing of materials of different grades. The fan 53 can provide wind power for the air spraying device 52, and finally the tobacco material is discharged through the discharging port 54.

[0048] As shown in the embodiment, the tobacco layered proportioning feeding method comprises the following steps: Figure 1

[0049] Step S1, layered feeding: different grades of tobacco raw materials in the module formula are respectively put into independent feeding belts 2.

[0050] In step S1, different grades of tobacco raw materials in the formula are respectively put through independent feeding belts. Each feeding belt 2 only conveys raw materials of a single grade, ensuring the accuracy and consistency of raw material feeding. Specifically, in the layered feeding process, the number of feeding belts 2 is 10-20, and in specific implementation, the number of feeding belts 2 to be started can be selected according to the number of grades in the formula. The speed of each feeding belt 2 is consistent, which is 3-10 m / min, ensuring that materials of each grade can fall into the collecting belt 3 at the same time.

[0051] Step S2, real-time control of feeding amount: real-time collection of feeding amount data of each feeding belt 2, and real-time control of feeding amount of each feeding belt 2 according to the collected feeding amount data and the preset formula proportion.

[0052] ​The feeding belt 2 of this invention is equipped with a control system 9, which connects to the electronic belt scales 8 of each feeding belt 2 and a display screen 10 positioned above the replenishment points 7. During the feeding process, the electronic belt scales 8 at the feeding points 6 collect real-time data on the amount of tobacco leaves fed to each grade, and transmit this data to the control system 9. Based on the collected data, the control system 9 quickly analyzes the current feeding ratio of each grade of tobacco leaves and accurately compares it with the preset formula ratio built into the control system 9, automatically determining the required replenishment weight for each grade of tobacco leaves and synchronizing the replenishment weight data to the display screen 10. Based on the information displayed on the display screen 10, the operator accurately replenishes the weight at the replenishment points 7, ensuring that the raw material ratio meets production requirements within each feeding cycle, significantly improving the accuracy of tobacco leaf feeding and the stability of production quality.

[0053] In one embodiment of the tobacco leaf layered proportioning feeding method of the present invention, step S2 may specifically include:

[0054] Step S21: During the feeding process, the feeding amount data of each grade of tobacco leaf is collected in real time by the electronic belt scale 8 installed on each of the feeding belts 2, and the feeding amount data is sent to the control system 9 for aggregation. Let there be n grades of tobacco leaves in the formula, and the total feeding amount of the i-th grade of tobacco leaves is denoted as x. i .

[0055] The control system 9 includes a PLC controller. It should be noted that the present invention does not specifically limit the type and model of the control system 9.

[0056] Step S22: The control system 9 collects data on the current feeding amount of tobacco leaves of each grade and calculates the maximum formula feeding base for a single feeding cycle.

[0057] Specifically, in conjunction with the target ratio p of the module formulation i Based on the principle of the long-board theory, the maximum feed base T for a single feeding cycle is calculated using the following formula: T = .

[0058] Step S23: Calculate the required supplementary weight of each grade of tobacco leaves and synchronize the supplementary weight data to the display screen 10 of each of the corresponding feed belts 2.

[0059] Specifically, in step S23, the supplementary weight y of the i-th grade tobacco leaf is calculated using the following formula. i y i = .

[0060] Step S24: At each of the feed belt 2, add weight according to the weight display on the display screen 10.

[0061] Specifically, each of the feeding belts 2 is provided with a plurality of feeding points 6 and a supplementary point 7, and the number of the feeding points 6 corresponding to each of the feeding belts 2 is 5-10. The supplementary point 7 is located at a downstream position of each of the feeding points 6 along the conveying direction of the tobacco material. It should be noted that the number and distribution position of the feeding points 6 are not specifically limited in the present application.

[0062] Further, an electronic belt scale 8 is arranged below each of the feeding points 6 and the supplementary point 7 of each of the feeding belts 2, for accurately measuring the single feeding amount in real time.

[0063] Still further, a display screen 10 of each of the feeding belts 2 is arranged above the corresponding supplementary point 7, for facilitating the supplementary weight operator to watch.

[0064] In step S3, the speed of the collecting belt 3 is not lower than the speed of the feeding belt 2, and the speed of the collecting belt 3 is set to 10-15 m / min. In one embodiment of the tobacco layered proportioning feeding method of the present application, the step S3 can specifically include:

[0065] In step S3, the speed of the collecting belt 3 is not lower than the speed of the feeding belt 2, and the speed of the collecting belt 3 is set to 10-15 m / min. In one embodiment of the tobacco layered proportioning feeding method of the present application, the step S3 can specifically include:

[0066] In step S31, the material on the collecting belt 3 falls into the feeding bin 5 through the chute 4.

[0067] Specifically, the tobacco material on the collecting belt 3 falls into the feeding bin through the chute 4.

[0068] In step S32, after the material falls into the feeding bin 5, the material entering the feeding bin 5 is blown away by the air blowing device 52 arranged in the feeding bin 5, so as to facilitate the full mixing of the materials of different grades.

[0069] In one embodiment of the present application, a certain formula module A is taken as the test material, and the formula proportion of each grade of tobacco in A is shown in Table 1. The tobacco layered proportioning feeding method provided by the present application is used for proportioning and feeding, and the material proportioning situation of a single feeding cycle is described, and the specific steps include:

[0070] Table 1 Formula table of module A

[0071]

[0072] (1) Layered feeding: according to the formula table, 5 feeding belts are started, and 5 grades of tobacco raw materials are respectively fed through independent feeding belts. The feeding belt speed is set to 5 m / min.

[0073] (2) Real-time control of feeding amount, the specific steps are as follows:

[0074] (2.1) When feeding once, the electronic belt scale of the feeding belt real-time collects the feeding amount of single grade tobacco leaf, and the total feeding amount of each grade tobacco leaf is summarized through the control system. The total feeding amount of each feeding belt is shown in Table 2.

[0075] Table 2 Total feeding amount of each feeding belt

[0076]

[0077] (2.2) According to the principle of long board theory, the maximum formula feeding base T of single feeding period is obtained by combining module formula table 1. The calculation result of the maximum formula feeding base is 8 kg.

[0078] (2.3) Based on the maximum formula feeding base, the target feeding amount is obtained, and the compensation weight yi of each grade tobacco leaf is calculated by comparing the actual feeding amount, as shown in Table 3. At the same time, the compensation weight information of each grade is displayed on the display screen of each feeding belt.

[0079] Table 3 Single target feeding amount and compensation weight of each grade tobacco leaf

[0080]

[0081] (2.4) The operator performs compensation according to the prompt information on the display screen.

[0082] (3) In-bin initial mixing. Each grade of material falls into the collection belt through the feeding belt and is conveyed to the feeding bin. The speed of the collection belt is set at 10 m / min. The feeding bin is provided with a gas spraying device to blow the entering material, so as to facilitate the full mixing of different grades of material.

[0083] At the same time, the traditional leaf laying method is taken as a control, and the tobacco leaf formula obtained by the present application and the traditional leaf laying method is compared by sampling at the collection belt after the feeding link. The results are shown in Table 4.

[0084] Table 4 Comparison of evaluation results of mixing uniformity after feeding of module A

[0085]

[0086] As can be seen from Table 4, compared with the traditional leaf laying method, the nicotine variation coefficient of the finished cut tobacco obtained by the method of the present application is reduced by 4.2 percentage points, which can significantly improve the processing uniformity.

[0087] ​The tobacco layering proportion feeding method and device provided by the embodiment of the present application can collect feeding amount data of each feeding belt in real time, and control the feeding amount of each feeding belt in real time according to the feeding amount data and a preset formula proportion, so as to realize accurate proportioning of each grade of tobacco, has low requirement on the operator, ensures that the raw material proportioning in each feeding period meets the production requirement, and can significantly improve the processing uniformity of finished cut tobacco; the difference between the actual feeding proportion and the formula target proportion is obtained in real time, and the supplement weight of each grade of tobacco is calculated, so that the operator can supplement the weight according to the calculation result of the supplement weight; meanwhile, the different grades of tobacco materials in the feeding bin are mixed, which significantly improves the accuracy of tobacco feeding and the uniformity of processing; after the tobacco materials fall into the feeding bin, the entering materials can be blown away by the air blowing device, which is beneficial to the full mixing of different grades of tobacco materials.

[0088] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0089] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A tobacco leaf layering proportioning feeding method, characterized in that, The application relates to a layered feeding device for tobacco leaf material. The layered feeding device comprises: a layered feeding process: different grades of tobacco leaf materials in a module formula are respectively fed to independent feeding belts; real-time feeding amount regulation: real-time feeding amount data of each feeding belt are collected, and feeding amounts of each feeding belt are regulated in real time according to the collected feeding amount data and a preset formula proportion; 2. The tobacco layering and proportioning feeding method according to claim 1, characterized in that, in-bin initial mixing: each grade of material falls into a collection belt through a corresponding feeding belt and is conveyed to a feeding bin through the collection belt.

3. The tobacco layering and proportioning feeding method according to claim 1, characterized in that, In the layered feeding process, the number of the feeding belts is 10-20, and the speed of each feeding belt is consistent and is 3-10 m / min. Step S21: During the feeding process, the electronic belt scale arranged at each feeding point of each feeding belt collects the feeding amount data of single-grade tobacco leaves in real time, and sends the feeding amount data to the control system for summarization. There are n grades of tobacco leaves in the formula, and the total feeding amount of the i th grade of tobacco leaves is denoted as x i ; The real-time feeding amount regulation comprises: Step S22: a control system calculates a maximum formula feeding basis of a single feeding period based on current feeding amount collection data of each grade of tobacco leaf; Step S23: the required supplement weight of each grade of tobacco leaf is calculated, and the supplement weight data is synchronously displayed on a display screen of each corresponding feeding belt; 4. The tobacco layering and proportioning feeding method according to claim 3, characterized in that, Step S24: the supplement weight displayed on the display screen is used to supplement the weight at the supplement point of each feeding belt. Combining module formulation target proportion p i According to the principle of the long board theory, the maximum formulation feeding base T of a single feeding cycle is calculated by the following formula: T= 。 5. The tobacco layering and proportioning feeding method according to claim 3, characterized in that, In the step S23, the supplementary weight y of the i-th grade tobacco leaf is calculated by the following equation i : y i = 。 6. The tobacco layering and proportioning feeding method according to claim 3, characterized in that, The step S22: the control system calculates the maximum formula feeding basis of the single feeding period based on the current feeding amount collection data of each grade of tobacco leaf, and comprises: a plurality of feeding points and a supplement point are distributed on each feeding belt, the number of the feeding points corresponding to each feeding belt is 5-10, the supplement point is located downstream of each feeding point along the conveying direction of the tobacco leaf material, an electronic belt scale is arranged below each feeding point and the supplement point of each feeding belt, and a display screen of each feeding belt is arranged above the corresponding supplement point; 7. The tobacco layering and proportioning feeding method according to claim 3, characterized in that, the control system comprises a PLC controller, and the electronic belt scale corresponding to each feeding point and the display screen are connected with the control system. The in-bin initial mixing comprises: the material on the collection belt falls into the feeding bin through a feeding bin chute; 8. The tobacco layering and proportioning feeding method according to claim 1, characterized in that, after the material falls into the feeding bin, a gas spraying device arranged in the feeding bin is used to blow the material entering the feeding bin.

9. A tobacco layering proportioning feeding device using the method of any one of claims 1-8, characterized in that, In the in-bin initial mixing process, the speed of the collection belt is not lower than the speed of the feeding belt, and the speed of the collection belt is set to be 10-15 m / min.

10. The tobacco layering proportioning feeder according to claim 9, characterized in that, A conveying table is arranged with a plurality of feeding belts and a collection belt, each feeding belt is used for receiving tobacco leaf materials of different grades, the collection belt is used for collecting the tobacco leaf materials on each feeding belt, an end of the collection belt is provided with a chute in an inclined direction, and an end of the chute is connected with a feeding bin. Each feeding belt is arranged in parallel, and the collection belt is perpendicular to each feeding belt. A plurality of feeding points and a supplement point are distributed on each feeding belt, the number of the feeding points corresponding to each feeding belt is 5-10, the supplement point is located downstream of each feeding point along the conveying direction of the tobacco leaf material, an independent electronic belt scale is arranged below each feeding point and the supplement point, and a display screen is arranged above the supplement point. The electronic belt scale corresponding to each feeding point is connected with a control system, and the display screen is connected with the control system. The feeding bin comprises a feeding port at the top of the feeding bin and a discharging port at the bottom of the feeding bin, and a gas spraying device is arranged in the feeding bin, the gas spraying device comprises air pipes arranged on both sides of the inner wall of the feeding bin in the vertical direction, a plurality of gas mixing nozzles are arranged on the air pipes, and the air pipes are connected with a fan.

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