Odor and Dust Control System and Control Method for the Blade Feeding Area of the Cigarette Factory's Silk Making Line

Abstract

The present invention provides an odor and dust control system and control method for the leaf feeding area of the cigarette making wire in a cigarette factory, belonging to the environmental protection technology field of cigarette factories. It includes: a supply air duct, an intake air duct, and a return air outlet. The supply air duct is arranged above the feeding area, and a plurality of air supply holes are provided on the supply air duct. The intake air duct is communicated with the supply air duct, and an intake fan is provided on the intake air duct, so that the air in the supply air duct is ejected from the air supply holes to form an air curtain, and the air curtain forms a closed control area outside the feeding area; the return air outlet is arranged above the feeding area, a return air duct is connected to the return air outlet, an exhaust fan is connected to the return air duct, and the return air duct is connected to the odor dust removal equipment in the factory. By suppressing the odor and dust diffused in the feeding area within the control area without diffusing inside the workshop and outside the factory, and at the same time transporting the air with odor and dust to the odor dust removal equipment in the factory, and discharging it into the external environment after meeting the emission requirements, the impact on the surrounding environment of the factory is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection in cigarette factories, and particularly to an odor and dust control system and control method for the leaf feeding area of the cigarette making wire in a cigarette factory. Background Art

[0002] With the development and progress of society and the continuous improvement of people's living standards, people's awareness of environmental protection and health is getting stronger and stronger. In the process of cigarette production and processing, especially in the cigarette making process, a lot of equipment for temperature and humidity increase, feeding and flavoring is required to increase the temperature and humidity, cut, dry, feed and flavor the work-in-progress. During this process, a large amount of high-temperature, high-humidity, odorous gases and dust will be generated. At the same time, due to the long technological process, complex process equipment, large workshop volume in the cigarette making workshop of the cigarette factory, the distance between the odor gases and dust generated at the process points and the dust removal return air points is relatively far, and the efficiency of the moisture exhaust system for some processes is reduced. For example, excessive moisture exhaust from the feeding cylinder will cause loss of spices and other reasons. The odor air and dust are continuously diffused, accumulated and distributed into the large environment of more than 100,000 cubic meters in the whole workshop through the air conditioning supply and return air system. Based on the great difficulty of the existing technology, cigarette factories in the industry have invested a large amount of funds in the technical upgrading process to adopt a large number of new technologies and new methods including water washing, adsorption, ionization, etc. for air purification, but the air treatment volume is too large to fundamentally solve the problem.

[0003] On the other hand, in the production operation practice, in order to isolate the influence of the external climate environment on the workshop temperature and humidity, human comfort, material processing process requirements, air conditioning energy saving, etc., the air conditioning system in the cigarette making workshop generally needs to maintain a slightly positive pressure of 5 - 10 Pa. Under specific combined conditions, including: when personnel or materials enter and exit, some negative pressure equipment stops running, various doors and windows in the workshop are not completely sealed, and the external climate environment is conducive to the diffusion of odor gases and dust, etc., the overflow amount of odor gases and dust from the workshop increases and diffuses to the outside of the factory area, resulting in complaints from surrounding residents, which is a common environmental protection technical problem faced by many cigarette factories located in the urban area. Summary of the Invention

[0004] Therefore, in order to reduce the accumulation of odor and dust in the workshop during the operation of the leaf feeding equipment in the cigarette making wire, and reduce the diffusion of odor and dust to the outside of the factory, the present invention provides an odor and dust control system and control method for the leaf feeding area of the cigarette making wire in a cigarette factory.

[0005] In the first aspect, the present invention provides an odor and dust control system for the leaf feeding area of the cigarette making wire in a cigarette factory, which includes:

[0006] An air supply pipe is arranged above the feeding area, and a plurality of air supply holes arranged in a circular array are provided on the air supply pipe;

[0007] The air inlet pipe is connected to the air supply pipe, and an air inlet fan is provided on the air inlet pipe to supply air into the air supply pipe, so that the air in the air supply pipe is ejected from the air supply holes to form an air curtain, and the air curtain forms a closed control area outside the feeding area;

[0008] The air return opening is arranged above the feeding area, a return air pipe is connected to the air return opening, an exhaust fan is connected to the return air pipe, and one end of the return air pipe far from the air return opening is connected to the odor dust removal equipment in the factory.

[0009] Optionally, the air supply holes include:

[0010] The first air supply holes are arranged at intervals in a ring on the air supply pipe and are arranged towards the outside of the feeding area;

[0011] And / or, the second air supply holes are arranged at intervals in a ring on the air supply pipe and are arranged towards the air return opening.

[0012] Optionally, the return air volume of the exhaust fan and the air supply volume of the air inlet fan are greater than the volume of the space constructed by the air curtain blown out on the air supply pipe.

[0013] Optionally, the air supply pipe includes a plurality of straight pipe sections and elbow pipe sections connecting two adjacent straight pipe sections. The first air supply holes and the second air supply holes are provided on the straight pipe sections, and the first air supply holes are provided on the elbow pipe sections; and / or, the air supply pipe has a closed rectangular structure, and the air inlet pipe is connected to the air supply pipe through a three-way valve.

[0014] Optionally, the air return opening is arranged above the air supply pipe; and / or, there are a plurality of air return openings which are distributed at intervals.

[0015] Optionally, an air inlet electric cut-off valve is provided on the air inlet pipe;

[0016] And / or, a return air electric cut-off valve is provided on the return air pipe.

[0017] Optionally, a fire damper is provided on the return air pipe.

[0018] Optionally, the control system further includes a detector and a controller. The detector is arranged in the feeding area, and the detector is used to detect the PM2.5 value at the current position. The controller is respectively in communication connection with the detector, the air inlet fan, and the exhaust fan.

[0019] Optionally, the detector includes:

[0020] The first detector is located vertically above the connection between the feeder and the discharge vibrating trough;

[0021] And / or, a second detector is located at the center of the control area.

[0022] On the other hand, the present application also provides a method for controlling odor dust in the leaf feeding area of a cigarette factory's silk-making line. Using the control system described in any of the above embodiments, the control method includes the following steps:

[0023] When the starting conditions are met, start the intake fan and the exhaust fan, where the starting conditions are that the feeder starts or the value detected by the detector exceeds the set threshold;

[0024] And / or, when the stopping conditions are met, turn off the intake fan and the exhaust fan, where the stopping conditions are that the time when the feeder is in the shutdown state is greater than or equal to the preset time, and the value detected by the detector is less than the set threshold;

[0025] And / or, before production, when the feeder is preheated, manually control the odor dust control system to close;

[0026] And / or, when the feeder is cleaned or repaired, manually control the odor dust control system to turn on.

[0027] The technical solution of the present invention has the following advantages:

[0028] 1. The odor dust control system provided by the present invention forms an air curtain by blowing outside air out of the air supply holes, constructs a closed control area outside the feeding area, suppresses the odor dust diffused in the feeding area within the control area, and does not diffuse inside the workshop and outside the factory. At the same time, the air with odor dust in the control area is drawn into the odor dust removal equipment in the factory through the return air outlet, and after dust removal and odor removal treatment to meet the emission requirements, it is discharged into the external environment, reducing the impact on the surrounding environment of the factory.

[0029] 2. In the odor dust control system provided by the present invention, the air supply holes are respectively the first air supply hole and the second air supply hole. The first air supply hole forms an air curtain below the air supply pipe, and the second air supply hole forms an air curtain between the air supply hole and the return air outlet. On the premise of suppressing the odor dust, it can effectively drive the odor dust to flow into the return air outlet, improving the absorption effect of the odor dust.

[0030] 3. The odor dust control method provided by the present invention can be automatically started or stopped according to the operation status of the equipment in the feeding area and the PM2.5 value in the air. Moreover, when preheating equipment such as the feeder or cleaning and repairing equipment such as the feeder, the control system can be manually turned off or on, reducing the working load of the odor dust removal equipment in the factory and ensuring a good working environment for workers. Description of the Drawings

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a flowchart of an odor and dust control system in the leaf feeding area of a cigarette factory's wire making line according to the present invention;

[0033] Figure 2 It is a top view sectional view of the air supply pipe of an odor and dust control system in the leaf feeding area of a cigarette factory's wire making line according to the present invention;

[0034] Figure 3 It is a schematic diagram of the ventilation direction of the air supply pipe of an odor and dust control system in the leaf feeding area of a cigarette factory's wire making line according to the present invention;

[0035] Figure 4 It is a partial sectional schematic diagram of the positional relationship between the air supply branch pipe and the first air return opening of an odor and dust control system in the leaf feeding area of a cigarette factory's wire making line according to the present invention;

[0036] Figure 5 It is a schematic diagram of the positional relationship between the first detector and the second detector of an odor and dust control system in the leaf feeding area of a cigarette factory's wire making line according to the present invention.

[0037] Explanation of reference numerals: 1, air inlet pipe; 2, inlet air electric stop valve; 3, inlet air fan; 4, inlet air branch pipe; 5, air supply pipe; 6, first air return opening; 7, second air return opening; 8, feeding area; 9, exhaust fan; 10, return air electric stop valve; 11, return air pipe; 12, fire damper; 13, first detector; 14, second detector; 15, PLC control cabinet; 16, three-way valve; 17, first air supply hole; 18, elbow section; 19, second air supply hole; 20, air curtain; 21, feeder; 22, feeding vibrating trough; 23, discharging vibrating trough. Specific embodiments

[0038] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Embodiment 1

[0043] This embodiment provides an odor and dust control system for the leaf feeding area of a cigarette factory's wire making line, which is used to be set in the leaf feeding area 8 of the cigarette factory's wire making line. One or more feeding machines 21 can be configured in the feeding area 8. Each feeding machine 21 is provided with a feeding vibrating trough 22 and a discharging vibrating trough 23. During the operation of the feeding machine 21, when the material moves from the feeding machine 21 to the discharging vibrating trough 23, the material at a relatively high temperature will form odor-carrying smoke and dust and diffuse outward. The odor and dust control system controls the generated odor smoke and dust within the feeding area 8, making it difficult for the odor and dust to diffuse to the outside. At the same time, the smoke and dust controlled within the feeding area 8 are extracted, thereby reducing the accumulation of odor and dust in the workshop, providing a healthier working environment for the workers in the workshop, and reducing the diffusion of odor and dust outside the factory to ensure the environmental quality outside the factory area.

[0044] Combined with Figure 1 、 Figure 2 and Figure 3As shown in the figure, the control system includes an air inlet pipe 1, an air supply pipe, an air return opening, and an air return pipe 11. Among them, the air supply pipe is arranged above the feeding area 8, and a plurality of air supply holes are opened on the air supply pipe. The air supply holes are arranged at annular intervals on the air supply pipe. The air inlet pipe 1 is communicated with the air supply pipe, and an air supply fan 3 is provided on the air inlet pipe 1 to supply air into the air supply pipe and make the air in the air supply pipe blow out from the air supply holes to form an air curtain 20. The air curtain 20 forms a closed control area outside the feeding area 8. The air return opening is also arranged above the feeding area 8. The air return pipe 11 is communicated with the air return opening. An exhaust fan 9 is provided on the air return pipe 11, and one end of the air return pipe 11 far from the air return opening is connected to the odor dust removal equipment in the factory.

[0045] In the above control system, the odor dust diffused in the feeding area 8 is restricted within the control area by the air curtain 20, thereby suppressing the diffusion of the odor dust to the outside. At the same time, the exhaust fan 9 continuously sucks the air in the feeding area 8 from the air return opening into the air return pipe 11 and transports it to the odor dust removal equipment in the factory for dust removal and odor removal. After meeting the emission standards, it is discharged into the external environment, improving the air quality inside the workshop and the external environment of the cigarette factory.

[0046] Refer to Figure 2 , specifically, the air supply pipe is arranged in a closed rectangular ring above the feeding area 8, and the feeding area 8 is located inside the rectangle surrounded by the air supply pipe. The air supply holes are arranged at uniform intervals along the length direction of the air supply pipe, that is, the air supply holes are also arranged along the rectangular shape, so that the control area formed by the air curtain 20 blown out by the air supply holes is rectangular.

[0047] As an alternative implementation, the air supply pipe can also be set in any shape, such as a circular, oval or polygonal structure. The air supply holes can also be arranged along a circular, oval or any other polygon, as long as the feeding area 8 is located within the control area formed by the air curtain 20 blown out by the air supply holes.

[0048] Among them, as shown in combination with Figure 3 and Figure 4 , the air supply holes include a first air supply hole 17 and a second air supply hole 19. The first air supply hole 17 is opened at the bottom of the air supply pipe, and the first air supply hole 17 is arranged vertically downward, so that the air blows vertically downward through the first air supply hole 17 to form an air curtain 20 below the air supply pipe, suppressing the diffusion of the odor dust to the surroundings of the feeding area 8. The second air supply hole 19 is arranged above the air supply pipe, and the second air supply hole 19 is arranged obliquely toward the air return opening, so that the air flows toward the air return opening after blowing out from the second air supply hole 19 to form an air curtain 20 above the air supply pipe, thus forming a closed control area. At the same time, the air curtain 20 formed at the second air supply hole 19 can directly bring the odor dust diffused in the feeding area 8 into the air return opening, accelerating the absorption of the odor dust.

[0049] As an alternative embodiment, the opening direction of the first air supply hole 17 can also be inclined, so that the first air supply hole 17 blows air toward the outside of the feeding area 8, and an air curtain 20 can be formed outside the feeding area 8.

[0050] Referring to Figure 3 , the air supply pipe includes a straight pipe section 5 and a bent pipe section 18. In this embodiment, the rectangular air supply pipe is formed by splicing four straight pipe sections 5 and four bent pipe sections 18 together, and the bent pipe section 18 is connected between two adjacent straight pipe sections 5. Moreover, a three-way valve 16 is provided on one of the straight pipe sections 5. The three-way valve 16 can be a Y-shaped three-way valve 16 or a T-shaped three-way valve 16. An air inlet branch pipe 4 is connected to the three-way valve 16, and the air inlet branch pipe 4 is connected to the air inlet fan 3, so as to connect the air inlet pipe 1 and this straight pipe section 5 to supply air to the entire air supply pipe.

[0051] Moreover, the first air supply holes 17 are opened on each straight pipe section 5 and each bent pipe section 18, and the second air supply holes 19 are only opened on each straight pipe section 5.

[0052] Specifically, in combination with Figure 1 and Figure 4 as shown, the air return opening is in the shape of a quadrangular frustum, so that the bottom opening area of the air return opening is relatively large, which is beneficial to sucking in odor dust. Moreover, at least two air return openings are provided and arranged at intervals to expand the absorption area and absorption speed of the odor dust. In this embodiment, there are two air return openings, namely a first air return opening 6 and a second air return opening 7. The first air return opening 6 and the second air return opening 7 are both connected to the air return pipe 11, and the first air return opening 6 and the second air return opening 7 are evenly arranged on both sides of the center point of the feeding area 8.

[0053] In addition, in this embodiment, the air return opening is located above the air supply pipe, that is, the second air supply hole 19 is arranged obliquely upward to accelerate the entry of the odor dust diffusing upward into the air return opening. Of course, the air return opening can also be set to be flush with the air supply pipe or arranged below the air supply pipe, as long as it is ensured that the second air supply hole 19 can blow the air flow into the air return opening.

[0054] Specifically, the air inlet fan 3 is a high-static-pressure pressurizing fan, and the exhaust fan 9 is a high-static-pressure negative-pressure fan. Moreover, the return air volume of the exhaust fan 9 is more than 1.5 times the volume of the space constructed by the air curtain 20 blown out on the air supply pipe compared with the air supply volume value of the air inlet fan 3, so as to ensure that the odor dust emitted in the feeding area 8 is not easily diffused to the outside.

[0055] For example: if the air supply fan 3 adopts an air supply volume of 5000 cubic meters per hour and the controlled area constructed by the formed air curtain 20 is 1000 cubic meters, then the designed return air volume value of the exhaust fan 9 should be greater than 6500 cubic meters per hour (1.5 * 1000 + 5000 = 6500).

[0056] Further, referring to Figure 1 , an air inlet electric stop valve 2 is provided on the air inlet pipe 1. The air inlet electric stop valve 2 is installed on the side of the air inlet fan 3 away from the air inlet branch pipe 4 to control the opening or closing of the air inlet pipe 1. A return air electric stop valve 10 is also provided on the return air pipe 11. The return air electric stop valve 10 is installed on the side of the exhaust fan 9 away from the return air outlet to control the opening or closing of the return air pipe 11. In addition, a fire damper 12 is provided on the return air pipe 11. The fire damper 12 is a 70°C fire damper, which quickly closes the return air pipe 11 in case of a fire to prevent the spread of fire and improve safety.

[0057] Further, the control system further includes a detector and a controller. The detector is arranged in the feeding area 8 to detect the PM2.5 value in the feeding area 8. The controller is communicatively connected to the detector, the air inlet electric stop valve 2, the air inlet fan 3, the return air electric stop valve 10, and the exhaust fan 9. Thus, the start or stop of the air inlet electric stop valve 2, the air inlet fan 3, the return air electric stop valve 10, and the exhaust fan 9 can be controlled according to the PM2.5 value detected by the detector.

[0058] In this embodiment, the detector is a PLC control cabinet 15, which is set in the PLC control cabinet 15 through data communication and programming, and realizes automatic control through the PID module. The PLC control cabinet 15 is connected to the local monitoring computer and further connected to the central control computer system of the cigarette making production line.

[0059] Referring to Figure 5 , wherein the detector includes a first detector 13 and a second detector 14. The first detector 13 is arranged vertically above the connection between the feeder 21 and the discharge vibrating trough 23 to detect the PM2.5 value vertically above the source of the odor dust emission; the second detector 14 is arranged at the center of the entire control area, mainly used to monitor the recovery status of the odor dust concentration in the controlled area after the production material passes through.

[0060] Embodiment 2

[0061] This embodiment provides a method for controlling the odor dust in the leaf feeding area of the cigarette making production line based on the above control system. The control method includes the following steps:

[0062] Step S1: When the start condition is met, open the air inlet electric stop valve 2 and the return air electric stop valve 10, and start the air inlet fan 3 and the exhaust fan 9, so that the outside air flows into the air supply pipe through the air inlet pipe 1 and blows out from the first air supply hole 17 and the second air supply hole 19 to form an air curtain 20. The air curtain 20 constitutes a closed control area. At the same time, the exhaust fan 9 sucks the air in the feeding area 8 into the return air pipe 11 from the return air outlet and transports it to the odor dust removal system in the factory for dust removal and odor removal, and then discharges it into the external environment after meeting the emission standards.

[0063] Among them, the starting condition is that the feeder 21 starts or the value detected by the detector exceeds the set threshold.

[0064] Step S2: When the stop condition is met, close the air inlet electric stop valve 2 and the return air electric stop valve 10, and stop the operation of the air inlet fan 3 and the exhaust fan 9.

[0065] Among them, the stop condition is that the time when the feeder 21 is in the shutdown state is greater than or equal to the preset time, and the value detected by the detector is less than the set threshold. For example: when the shutdown time is greater than 15 minutes, the PM2.5 values detected by the first detector 13 and the second detector 14 are both less than the set threshold. At this time, the odor dust concentration in the feeding area 8 is low, meeting the environmental requirements, and the control system can be closed.

[0066] Step S3: Under special conditions, the odor dust control system can be manually controlled to be turned on or off. The special conditions include: preheating the feeder 21 before production and cleaning and repairing the feeder 21.

[0067] Among them, when preheating the feeder 21 before production, the feeding vibrating trough 22, the feeder 21, and the discharging vibrating trough 23 are all in operation, but there is no material flow in the equipment at this time, and no odor dust will be generated. At this time, manually control the odor dust control system to be turned off to reduce the load of the odor dust removal equipment in the cigarette factory.

[0068] When cleaning and repairing the feeder 21, workers need to perform operations such as blowing the equipment. At this time, the residual material residues in the feeding vibrating trough, the feeder 21, and the discharging vibrating trough 23 will be blown out, and odor dust will also be formed and dispersed into the surrounding air. At this time, manually turn on the odor dust control system to ensure a good working environment for workers.

[0069] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An odor and dust control system for the leaf feeding area of a cigarette factory's silk-making line, which is used to be set in the leaf feeding area (8) of a cigarette factory's silk-making line. A number of feeding machines (21) are configured in the feeding area (8), and each feeding machine (21) is provided with a feeding vibrating trough (22) and a discharging vibrating trough (23). It is characterized in that, The control system includes: An air supply duct, which is arranged above the feeding area (8), and a plurality of air supply holes arranged in a ring are provided on the air supply duct; An air inlet duct (1), which is communicated with the air supply duct, and an air inlet fan (3) is provided on the air inlet duct (1) to supply air into the air supply duct, so that the air in the air supply duct is ejected from the air supply holes to form an air curtain (20), and the air curtain (20) forms a closed control area outside the feeding area (8); An air return opening, which is arranged above the feeding area (8) and above the air supply duct, an air return duct (11) is connected to the air return opening, an exhaust fan (9) is connected to the air return duct (11), and one end of the air return duct (11) far from the air return opening is connected to the odor dust removal equipment in the factory; The air supply holes include a first air supply hole (17) and a second air supply hole (19). The first air supply holes (17) are arranged at intervals in a ring on the air supply duct and are arranged towards the outside of the feeding area (8), and the second air supply holes (19) are arranged at intervals in a ring on the air supply duct and are arranged towards the air return opening; The air supply duct includes a plurality of straight pipe sections (5) and elbow pipe sections (18) connecting two adjacent straight pipe sections (5). The first air supply holes (17) and the second air supply holes (19) are provided on the straight pipe sections (5), and the first air supply holes (17) are provided on the elbow pipe sections (18).

2. The odor and dust control system according to claim 1, wherein The air return volume of the exhaust fan (9) and the air supply volume of the air inlet fan (3) are greater than the space volume constructed by the air curtain (20) blown out from the air supply duct.

3. The odor and dust control system according to claim 1, wherein The air supply duct has a closed rectangular structure, and the air inlet duct (1) is connected to the air supply duct through a three-way valve (16).

4. The odor and dust control system according to claim 1, characterized in that A plurality of air return openings are provided and are distributed at intervals.

5. The odor and dust control system according to claim 1, wherein An air inlet electric cut-off valve (2) is provided on the air inlet duct (1); And / or, an air return electric cut-off valve (10) is provided on the air return duct (11).

6. The odor and dust control system according to claim 1, wherein A fire damper (12) is provided on the air return duct (11).

7. The odor and dust control system according to any one of claims 1-6, characterized in that, The control system further includes a detector and a controller. The detector is arranged in the feeding area (8), and the detector is used to detect the PM2.5 value at the current position. The controller is respectively communicatively connected to the detector, the air inlet fan (3), and the exhaust fan (9).

8. The odor and dust control system according to claim 7, characterized in that, The detector includes: A first detector (13), which is vertically above the connection between the feeder (21) and the discharge vibrating trough (23); And / or, a second detector (14), which is located at the center of the control area.

9. A control method for odor dust in the leaf feeding area of the cigarette making wire in a cigarette factory based on the control system described in claim 7, characterized in that, The control method includes the following steps: When the starting condition is met, start the air inlet fan (3) and the exhaust fan (9), where the starting condition is that the feeder (21) starts or the value detected by the detector exceeds the set threshold; And / or, when the stopping condition is met, turn off the air inlet fan (3) and the exhaust fan (9), where the stopping condition is that the time when the feeder (21) is in the shutdown state is greater than or equal to the preset time, and the value detected by the detector is less than the set threshold; And / or, before production, heat the feeding machine (21), and manually control the odor and dust control system to close; And / or, clean or repair the feeding machine (21), and manually control the odor and dust control system to open.

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