CN114408620A - A feed and dust removal device for a production line for processing and recycling tobacco chips - Google Patents

Abstract

The invention provides a feeding and dust removing device of a tobacco scrap processing and recycling production line, which is arranged in front of the tobacco scrap processing and recycling production line, wherein a negative pressure air pipe is connected with other negative pressure conveying pipelines; comprises a feeding platform, a dust collecting cover, a negative pressure air pipe, an air flow control valve, a negative pressure branch pipe, a material uniform distribution device, a material lifter, a conveying belt, a transmission system and the like. The two ends of the material uniform distribution device are respectively connected with a feeding platform and a material hoister, and the material hoister is connected with a tobacco leaf scrap processing and recycling production line process; dust collecting covers are respectively designed above the feeding platform and at the top of the material uniform distribution device, and negative pressure branch pipes are respectively designed at the top of the dust collecting covers and are collected on the negative pressure air pipes; air flow control valves are respectively arranged on each negative pressure branch pipe and the negative pressure air pipe, and the air pressure difference and the air speed of each negative pressure branch pipe and the negative pressure air pipe are adjusted to ensure that the dust removal effect is optimal; the invention is convenient for manual feeding, eliminates the tobacco dust generated in the feeding and distributing process of tobacco scraps in time and improves the dustless production level.

Description

A feed and dust removal device for a tobacco chip processing and recycling production line

technical field

The invention relates to the technical field of tobacco processing, in particular to the feeding of tobacco chips and the dedusting and conveying of soot and dust generated in the process of uniform distribution by a material elevator, in particular to a feeding and dust removal device for a tobacco chip processing and recycling production line .

Background technique

In the tobacco industry, the tobacco scraps produced in the threshing and redrying workshop are complex mixtures. In addition to containing precious tobacco leaves and stems, they also contain hemp, soot, dust, etc. Recycling, refined separation and classification have always been the focus and difficulty of tobacco processing industry research.

Tobacco scraps produced in the threshing and redrying workshop are mainly composed of the following links: 1) Tobacco scraps generated when the purchased tobacco leaves are transported to the redrying workshop for unpacking; 2) Tobacco scraps generated during the grading and finishing of tobacco leaves , 3) Sweeping the broken soot produced in the material preparation area; 4) The broken soot produced after cleaning on each production line, on each machine or in each pipeline. Obviously, these tobacco scraps are mixed with complex components, such as hemp silk, cotton lint, soot, powder, dust, etc., especially the soot dust, which is very small and easy to float, and may not be visible to the naked eye, pungent and dazzling. . Therefore, in order to complete the separation and classification of tobacco chips of various specifications and sizes, the most basic work is to solve the soot and dust removal in each process step and process, which not only ensures the cleanliness of the workplace, but also ensures the safety of the staff. Health, and truly implement the goal of dust-free production and dust-free work.

After being cleaned, the broken smoke, soot, powder, dust, etc. produced by each production line and process in the redrying workshop are almost all collected into the tobacco chips. If the tobacco chips less than 1.5mm are classified as soot powder, then generally In most cases, it accounts for about 7.5%. Tobacco scraps are difficult to handle. The difficulty is that manual screening and sorting are difficult. The dust is large, the environmental pollution is large, and there are many non-smoke impurities. The easy sorting is often those large pieces of tobacco stems and non-smoke impurities that are easy to remove. , It can be seen that the most basic technology to complete the recycling of tobacco leaves is to solve the treatment technology of soot dust pollution. If the general production of the threshing and redrying workshop of Yuxi Cigarette Factory is calculated, it will produce about 500-700kg per day. Therefore, the separation, transportation and collection of soot dust in the tobacco scraps is a fundamental and important technical problem in the technical scheme of the recycling and utilization of tobacco scraps.

In order to complete the treatment of tobacco chips in the offline processing and recycling production line and realize dust-free production, the design of the feeding platform of the tobacco chips is studied. In view of the dust problems generated during the feeding and distribution of the uniform distribution device, it is important to study the dust removal method. Ensure the cleanliness of the workplace and protect the health of staff. The creator of the present invention finally obtained the present invention after a long period of research and practice.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a feeding and dedusting device for a tobacco chip processing and recycling production line, which solves the problem of dust removal and separation in the process of off-line processing and recycling production lines, and realizes dust-free production.

The technical scheme adopted in the present invention is:

Provided is a feeding and dust removal device of a tobacco chip processing and recycling production line, which is arranged in front of a feeding end of the tobacco chip processing and recycling production line, and includes a feeding platform, a material uniform distribution device, a material elevator and a dust removal system. The discharge port of the material platform is communicated with the feed port of the material uniform distribution device, and the discharge port of the material uniform distribution device is communicated with the feed port of the material elevator. The material port conveys materials to the tobacco chip processing and recycling production line;

The dust removal system includes a first dust collecting hood, a second dust collecting hood, a first negative pressure branch pipe, a second negative pressure branch pipe, a negative pressure air duct and a negative pressure conveying pipe, and the first dust collecting hood is arranged on the Above the feeding platform, the second dust collecting hood is arranged above the material uniform distribution device, and the first dust collecting hood and the second dust collecting hood pass through the first negative pressure branch pipe, the the second negative pressure branch pipe is communicated with the negative pressure air duct, the negative pressure air duct is communicated with the negative pressure conveying pipe, and the outlet of the negative pressure conveying pipe is located in an independent dust removal room;

The first negative pressure branch pipe, the second negative pressure branch pipe and the negative pressure air pipe are respectively provided with an air flow control valve to adjust the pressure difference and wind speed of the air pressure in each pipe.

Further, the distance between the bottom end of the first dust collecting hood and the feeding platform is 600-700 mm, and the second dust collecting hood closes the top of the material uniform distribution device;

The first and second negative pressure branch pipes and the negative pressure air pipe have the same pipe diameter, which is 160-170 mm, and the pressure difference of the air pressure in them is 25-35 Pa, and the wind speed is 5-10 m/s.

Further, the first and second dust collecting hoods are both trapezoidal table structures, the upper bottom surfaces of which are respectively connected with the first and second negative pressure branch pipes, the lower bottom surfaces are open, and each trapezoidal surface is an isosceles trapezoid.

Further, the upper surface of the feeding platform is a rectangle of 6000mm×800mm, and the three sides other than the discharge port are respectively surrounded by a feeding plate;

The size of the lower bottom surface of the first dust collecting hood is 3000 mm×900 mm, and the height is 492 mm, and the first dust collecting hood is arranged at a position close to the discharge port of the feeding platform.

Further, the 3000mm section of the upper surface of the feeding platform close to the material uniform distribution device in the length direction is used for feeding, and the remaining 3000mm section is used for material preparation.

Further, the size of the lower bottom surface of the second dust collecting hood is consistent with the size of the top surface of the material uniform distribution device, and the height of the second dust collecting hood is 403 mm.

Further, the material uniform distribution device includes a uniform distribution roller, the uniform distribution roller is provided with a spike, and the uniform distribution roller is used for uniformly spreading the tobacco chips from the feeding platform onto the material. on the conveyor belt of the elevator.

Further, a circular vibrating screen is provided in the dust removal room, and the negative pressure conveying pipeline sends the collected suspended matter into the circular vibrating screen, and the circular vibrating screen separates three types of substances: sheet cigarettes. , soot and dust, sesame flakes.

Compared with the prior art, the beneficial effects of the present invention are:

1. Since the tobacco scraps are processed separately offline and need to be manually fed, an artificial feeding platform is designed. The length of the feeding platform is 6000mm. The 3000mm section below the trapezoidal dust collecting hood is used for feeding, and the remaining 3000mm section is used for material preparation. , therefore, manual feeding can be implemented quickly.

2. Manually push the tobacco scraps in the preparation area into the feed port of the material distribution device through the trapezoidal dust collecting hood, and use the pegs on the uniform distribution roller to evenly spread the tobacco scraps to the material elevator. On the belt, the soot and dust generated by manual pushing and uniform roller nails will be collected into their respective dust collecting hoods under the action of negative pressure, and pumped away through their respective negative pressure branch pipes. The dust content in the tobacco scraps is extremely high, so the technical solution has a significant dust removal effect, which lays a solid foundation for the subsequent dust removal process or dust pollution control.

3. Since the pipe diameter, air pressure difference and wind speed are the key factors for the negative pressure dust removal effect, it is very important to design an air flow control valve on the negative pressure branch pipe and the negative pressure air duct, because the respective air flow can be used. The control valve adjusts the respective air pressure difference and wind speed in the pipe, so as to achieve the best dust removal effect.

4. The dust collecting hood is designed in a trapezoidal table shape. According to the principle of aerodynamics, it has a strong collection effect on the air, and also has a good effect on negative pressure dust removal.

5. Fine soot dust collection, dust-free processing. Tobacco scraps almost contain most of the soot dust in the redrying workshop, especially the original (unscreened) tobacco scraps in the quantitative feeding process have a very high dust content, which is more harmful to the workshop environment and staff. This solution perfectly solves this problem, collects the soot and dust for recycling, and separates it into cigarettes (larger than 1.5mm square), soot and dust, and sesame flakes (less than 1.5mm square). In the ginseng production line, sesame flakes can be used in the production of tobacco flakes, and finally added to make silk to improve the performance of cigarettes; soot dust is also the best raw material for mixing fertilizers. Due to the large amount of tobacco leaf debris produced every day in tobacco production, the cost of these raw materials is as high as tens of millions of yuan, and the amount of soot dust is also considerable. After treatment, it will produce good economic benefits.

To sum up, due to the soot dust, which is very small, easy to float, difficult to see with the naked eye, and irritating to the nose, in the front part of the tobacco chip processing and recycling production line, artificial feeding and material distribution are designed and installed, and the soot dust is activated. Dust removal conveying has obvious effect on dust removal, lays a solid foundation for subsequent dust removal process or control dust pollution, improves the air quality of production and working environment, enhances the level of dust-free production, and improves the purity of the separated flakes. .

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 shows a schematic structural diagram of a feeding and dust removal device of a tobacco chip processing and recycling production line according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of the installation size and layout of the feeding and dust removal device of the tobacco chip processing and recycling production line according to an embodiment of the present invention;

Fig. 3 is the left side view of Fig. 2;

FIG. 4 shows a schematic structural diagram of a first dust collecting hood according to an embodiment of the present invention;

FIG. 5 shows a schematic diagram of the dimension design of the first dust collecting hood according to the embodiment of the present invention;

Fig. 6 is the left side view of Fig. 5;

7 shows a schematic diagram of the installation structure of the second dust collecting hood and the second negative pressure branch pipe according to an embodiment of the present invention;

FIG. 8 shows a schematic diagram of the dimension design of the upper bottom and the lower bottom of the second dust collecting hood according to the embodiment of the present invention;

FIG. 9 is a schematic diagram showing the height dimension design of the second dust collecting hood according to the embodiment of the present invention.

Detailed ways

The above and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two unless expressly and specifically defined otherwise.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two elements or the interaction relationship between the two elements, unless otherwise clearly defined. 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 situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

As shown in Figure 1, the feeding and dust removal device of the tobacco chip processing and recycling production line is placed in front of the tobacco chip processing and recycling production line, including a feeding platform 1, a material uniform distribution device 10, a material elevator 11 and a dust removal system. The discharge port of the platform 1 is communicated with the feed port of the material uniform distribution device 10, the discharge port of the material uniform distribution device 10 is communicated with the feed port of the material elevator 11, and the discharge port of the material elevator 11 is connected to the tobacco leaves. The scrap processing and recycling production line conveys the material. The dust removal system includes a first dust collecting hood 2, a second dust collecting hood 9, a first negative pressure branch pipe 3, a second negative pressure branch pipe 8, a negative pressure air duct 6 and a negative pressure conveying pipe (not shown in the figure). A dust collecting hood 2 is arranged above the feeding platform 1, and a second dust collecting hood 9 is arranged above the material uniform distribution device 10. The first dust collecting hood 2 and the second dust collecting hood 9 pass through the first negative pressure branch pipe respectively. 3. The second negative pressure branch pipe 8 is communicated with the negative pressure air duct 6, the negative pressure air duct 6 is communicated with the negative pressure conveying pipe, and the outlet of the negative pressure conveying pipe is located in an independent dust removal room ((not shown in the figure) )Inside. The first negative pressure branch pipe 3, the second negative pressure branch pipe 8 and the negative pressure air pipe 6 are respectively provided with an air flow control valve 4, 7, 5 to adjust the air pressure difference P of the respective air flow control valves 4, 7, 5 And the wind speed V makes the dust removal effect reach the best. Among them, the material uniform distribution device includes a uniform distribution roller 15, and the uniform distribution roller is provided with a shovel 16. The uniform distribution roller is used to evenly spread the tobacco chips from the feeding platform 1 onto the conveying belt 12 of the material elevator 11. , there is a hoist bracket 13 below the material hoist 11 .

Since it is necessary to design and adopt an off-line processing line to separate, classify and recycle the tobacco scraps, the feeding of the tobacco scraps must be done manually. Due to the high dust content in the tobacco scraps, it is easy to escape and pollute the environment. The scrap feeding enters other processes on the lifting belt of the material elevator. Therefore, a feeding platform is designed, and through this platform, the material is evenly distributed to the lifting belt of the material elevator; When the device is distributing to the hoisting belt, the dust in the tobacco scraps will be produced, especially, the dust content in the original (unscreened) tobacco scraps is extremely high, and the uniform distribution roller and The paddle nails make the dust float the most. Therefore, it is necessary to study not only the problem of dust floating on the feeding platform, but also the problem of dust floating by the uniform roller and the paddle nails.

The dust removal and transportation of soot and dust in the recycling of tobacco scraps are the basis of the entire offline processing production line. Generally speaking, it is believed that: 1) Since the feeding of tobacco scraps is manual, it is possible to control the dust pollution by manual labor. However, in reality, manual operation is difficult to achieve; 2) Because the material uniform distribution device is used to uniformly distribute material to the lifting belt of the material elevator, the material uniform distribution device has good airtightness, and the rotation speed of the uniform distribution roller and the scoop nail is not high. It is generally believed that the problem of negative pressure dust removal does not need to be considered, but the actual situation research shows that because the dust in the tobacco leaf debris has not been screened, the content is very high, and it is very easy to escape. It can make the dust generated in the next process flow less, avoid the harm of dust to the workshop environment and staff, and also help to improve the purity of the separated smoke.

As shown in Figures 2 and 3, in a specific embodiment, the feeding platform 1 is designed as a rectangular table with a length L: 6000mm and a width W: 800mm, and the three sides of the table top of the feeding platform 1 are designed with material protection plates 19 respectively. , the bottom of the table is the feeding platform bracket 18, and the first dust collecting hood 2 is designed directly above the feeding platform 1 on the side of the material uniform distribution device 10. The first dust collecting hood 2 is a trapezoidal table structure, and the first dust collecting hood 2 The size of the lower bottom is 3000mm×900mm, the distance H=600-700mm from the feeding platform 1 table, preferably, H is 600mm, and the material guard 19 is used to prevent the tobacco chips from falling during stacking and feeding.

The length L of the feeding platform 1 is 6000mm, the rear 3000mm section of the feeding platform 1 under the first dust collecting hood 2 is used for feeding, and the remaining first 3000mm section is used for material preparation. The lower part of the dust cover 2 is pushed into the feeding port 17 of the material distribution device 10, and then the pegs 16 on the uniform distribution roller 15 are used to spread the tobacco chips evenly on the conveyor belt 12 of the material elevator 11, and the material is lifted. The operating power of the machine 11 and the material uniform distribution device 10 is provided by the transmission system 14 .

Due to the process of manually pushing the tobacco scraps in the material preparation area into the feeding port 17 of the material uniform distribution device 10 through the lower part of the first dust collecting hood 2, soot and dust will be generated, which will pass through the second dust collecting hood 2 above the first dust collecting hood 2. With the function of a negative pressure branch pipe 3, these floating soot and dust will be collected into the first dust collecting hood 2 and finally absorbed by the first negative pressure branch pipe 3; During the process of evenly spreading the tobacco chips onto the conveyor belt 12 by the scoop nails 16 , a large amount of soot and dust will also be generated, which will also be collected into the second dust collecting hood 9 and absorbed by the second negative pressure branch pipe 8 . Finally, the second negative pressure branch pipe 8 intersects with the first negative pressure branch pipe 3 and merges into the negative pressure air duct 6, which is connected to the negative pressure conveying pipes of other processes, and finally conveyed to the dust removal room.

Since the dust removal effect is closely related to the pipe diameter, the pressure difference of the air pressure and the wind speed, if the pressure difference P and the wind speed V parameter value is too small, the dust removal effect will be poor, and if the value is too large, a large number of smoke flakes will be drawn away. Therefore, it is necessary to study the relevant technology. parameter.

In this embodiment, the diameters of the negative pressure air duct and each negative pressure branch pipe are the same, which is ΦD=165mm. An air flow control valve 4 is designed on the first negative pressure branch pipe 3, and an air flow control valve 4 is designed on the second negative pressure branch pipe 8. The air flow control valve 7 is designed with an air flow control valve 5 on the negative pressure air duct 6. Therefore, the respective air flow control valves can be used to adjust the pressure difference P and the wind speed V of the respective air pressure in the pipe, so as to achieve a better Dust removal effect, in this embodiment, the pressure difference of air pressure is P=25~35Pa, and the wind speed is designed to be V=5~10m/s, which has a good dust removal effect.

A second dust collecting hood 9 is designed on the upper part of the material uniform distribution device 10. The second dust collecting hood 9 has a trapezoidal table structure. The upper part of the uniform distribution device 10 is a rectangular opening.

As shown in FIG. 7 , the upper part of the second dust collecting cover 9 is designed with a through hole to install the negative pressure branch pipe 8, and a positioning hole 7-1 is designed on the negative pressure branch pipe 8 for installing the air flow control valve 7, and the negative pressure branch pipe 8 is designed to be bent .

As shown in Figures 8-9, the lower bottom and the upper bottom of the second dust collecting hood 9 are rectangular, the size of the lower bottom is b1×a1, b1=800mm, a1=400mm, and the size of the upper bottom is b×a, b=585mm , a=185mm, the height is H1=403mm, and each trapezoid surface is an isosceles trapezoid.

As shown in FIG. 4 , the upper part of the second dust collecting hood 2 is designed with a through hole to install the negative pressure branch pipe 3 , and a positioning hole 4 - 1 is designed on the installation of the negative pressure branch pipe 3 to install the air flow control valve 4 .

As shown in Figures 5-6, the lower bottom and the upper bottom of the first dust collecting hood 2 above the feeding platform 1 are rectangular, the size of the lower bottom is N×N1, N=3000mm, N1=900mm; the size of the upper bottom is M×M1 , M=400mm, M1=330mm, height H2, H2=492mm, each trapezoid surface is an isosceles trapezoid.

The shape of the first and second dust collecting hoods 2 and 9 can be trapezoidal truncated or conical truncated. According to the principle of aerodynamics, they have a good collection effect on the air and have a good effect on negative pressure dust removal. The upper and lower bottoms should be designed according to the geometric dimensions of the material uniform distribution device 10 and the feeding platform 1. Therefore, as long as the height of the trapezoid body is determined and each trapezoid surface is an isosceles trapezoid, according to the mathematical principle, each trapezoid angle is Determine, for example, in Figures 5 to 6, about B=20.76°, B1=60°; the lifting angle of the material elevator 11 is about 18.5°, and the length in the longitudinal direction of the feeding platform 1 is 3000mm. The conveyor belt 12 at the material outlet of the 10 is designed with a sticky wool belt to remove impurities, so as to remove the hemp velvet and the like existing in the tobacco chips.

The circular vibrating screen is installed in an independent dust removal room, and the tobacco chip processing and recycling production line is installed in an independent workshop. The dust removal room and the independent workshop are isolated and connected by a negative pressure conveying pipeline. The negative pressure conveying pipeline sends the collected suspended matter into the dust removal room, and then introduces it into the circular vibrating screen for separation and classification. Dust, sesame flakes (smoke flakes less than 1.5mm square). A specific example is that the model of the circular vibrating screen used is MA60S888 and the serial number is U14067-3.

The above are only preferred embodiments of the present invention, which are merely illustrative rather than restrictive for the present invention. The structure and connection mode of each component in the present invention can be changed to some extent, and all equivalent transformations and improvements made on the basis of the technical solutions of the present invention should not be excluded from the protection scope of the present invention.

Claims (8)

1. A feeding and dust removing device of a tobacco scrap processing and recycling production line is arranged in front of a feeding end of the tobacco scrap processing and recycling production line and is characterized by comprising a feeding platform, a material uniformly distributing device, a material lifting machine and a dust removing system, wherein a discharging port of the feeding platform is communicated with a feeding port of the material uniformly distributing device, a discharging port of the material uniformly distributing device is communicated with a feeding port of the material lifting machine, and a discharging port of the material lifting machine conveys materials to the tobacco scrap processing and recycling production line;

the dust removal system comprises a first dust collection cover, a second dust collection cover, a first negative pressure branch pipe, a second negative pressure branch pipe, a negative pressure air pipe and a negative pressure conveying pipeline, the first dust collection cover is arranged above the feeding platform, the second dust collection cover is arranged above the material uniformly-distributing device, the first dust collection cover and the second dust collection cover are respectively communicated with the negative pressure air pipe through the first negative pressure branch pipe and the second negative pressure branch pipe, the negative pressure air pipe is communicated with the negative pressure conveying pipeline, and an outlet of the negative pressure conveying pipeline is positioned in an independent dust removal room;

and the first negative pressure branch pipe, the second negative pressure branch pipe and the negative pressure air pipe are respectively provided with an air flow control valve so as to adjust the pressure difference and the air speed of the air pressure in each pipe.

2. The feeding and dust removing device of the tobacco scrap processing and recycling production line according to claim 1, wherein the distance between the bottom end of the first dust collecting cover and the feeding platform is 600-700 mm, and the second dust collecting cover closes the top of the material uniformly distributing device;

the diameters of the first negative pressure branch pipe and the second negative pressure branch pipe are the same as those of the negative pressure air pipe and are 160-170 mm, the pressure difference of air pressure in the first negative pressure branch pipe and the second negative pressure branch pipe is 25-35 Pa, and the air speed is 5-10 m/s.

3. The feeding and dust removing device of the tobacco scrap processing and recycling production line according to claim 2, wherein the first dust collecting hood and the second dust collecting hood are both of a trapezoid table structure, the upper bottom surfaces of the trapezoid table structure are respectively connected with the first negative pressure branch pipe and the second negative pressure branch pipe, the lower bottom surfaces of the trapezoid table structure are open, and each trapezoid surface is in an isosceles trapezoid shape.

4. The feeding and dust removing device of the tobacco scrap processing and recycling production line according to claim 3, wherein the upper surface of the feeding platform is a rectangle of 6000mm x 800mm, and three sides of the feeding platform except the discharge port are respectively surrounded by guard plates;

the size of the lower bottom surface of the first dust collection cover is 3000mm multiplied by 900mm, the height of the first dust collection cover is 492mm, and the first dust collection cover is arranged at a position close to the discharge hole of the feeding platform.

5. A feeding and dust removing device for a tobacco scrap processing and recycling production line as claimed in claim 4, wherein the upper surface of the feeding platform is close to 3000mm section of the material uniform distribution device in the length direction for feeding, and the rest 3000mm section is for stock preparation.

6. A feeding and dust removing apparatus for a tobacco shred processing and recycling production line as claimed in claim 3, wherein the size of the lower bottom surface of the second dust collecting hood is consistent with the size of the top surface of the material uniformly distributing apparatus, and the height of the second dust collecting hood is 403 mm.

7. The feeding and dust removing device of claim 1, wherein the material distribution device comprises a distribution roller, the distribution roller is provided with a loquat nail, and the distribution roller is used for uniformly spreading the tobacco scraps from the feeding platform onto the conveying belt of the material lifter.

8. A feeding and dust removing device for a tobacco scrap processing and recycling production line according to claim 1, wherein a circular vibrating screen is arranged in the dust removing room, the negative pressure conveying pipeline conveys collected suspended matters into the circular vibrating screen, and the circular vibrating screen separates three types of matters: tobacco flakes, ash and dust, sesame flakes.

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