CN218650226U - Intelligent tobacco grading system - Google Patents

Abstract

The utility model discloses a tobacco leaf intelligence grading system, including the loose system of tobacco leaf, tobacco leaf grading system, divide the neat stalk system in storehouse. The tobacco leaf loosening system comprises a manual bundle loosening channel, a vibration screening device and a vibration winnowing device, and aims to gradually reduce the size of tobacco leaves from large to small and increase the thickness of the tobacco leaves to thin through the manual and mechanical mixing action, so that the tobacco leaf loosening system realizes the singulation and prepares for grading the tobacco leaves; the tobacco leaf grading device comprises a wind separation cavity single-chip part and an air duct grading system, and mainly has the functions of wind separation single-chip, visual identification grading and channel output. The bin and stem separating system mainly comprises a first belt, a second belt and an output belt. The system can realize automatic classification of the machine for tobacco leaf classification work, replaces the current situation of the existing manual classification, saves a large amount of labor force, and improves the intelligence of the tobacco leaf classification work.

Description

Intelligent tobacco grading system

Technical Field

The utility model belongs to the technical field of tobacco machinery, concretely relates to tobacco leaf intelligence grading system.

Background

At present, the tobacco leaf sorting task of threshing and redrying enterprises is finished by grading workers according to national standards and by means of human sensory judgment. The quality factors such as the maturity, the leaf structure, the identity, the oil content, the color and the length of the tobacco leaves can be distinguished by human senses. No matter the tobacco leaf sorting method is adopted, a large amount of manpower and material resources are needed no matter the tobacco leaf sorting method is adopted, the sorting personnel are often low in education degree, the mastering degree of the sorting capacity of the tobacco leaves is uneven after skill training, and factors such as the normal physiological fatigue period of people and labor-intensive enterprises are wasted in the busy farming season, so that the efficiency and the final quality of the tobacco leaf sorting are directly limited. The re-selection capacity of the tobacco leaves becomes a standard for judging the processing capacity of a redrying enterprise. The re-selection capability of the tobacco leaves is improved, and the tobacco leaves become the urgent need for the development of redrying enterprises. Tobacco plays a crucial role in national economy as an important economic crop. At present, domestic tobacco leaves are basically classified manually, a series of problems of time consumption, labor waste, classification fuzzy, high subjectivity and the like exist, and in addition, the efficiency and the final quality of tobacco leaf sorting are directly limited due to factors such as normal physiological fatigue of classification workers, busy farming season, labor shortage of labor intensive enterprises and the like. With the development of modern tobacco production and the continuous improvement of cigarette product quality, more professional and accurate automatic tobacco leaf grading systems are increasingly required to solve the above defects of manual grading.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a tobacco leaf intelligence grading system, can be quick accurate realize that the tobacco leaf is automatic loose, hierarchical branch storehouse, can guarantee the uniformity of tobacco leaf classification, effectively solve present artifical hierarchical problem that recruitment is big, inefficiency.

The utility model provides a tobacco leaf intelligent grading system in a first aspect, which comprises a tobacco leaf grading device, wherein the tobacco leaf grading device comprises a winnowing cavity single-slice system 5 and an air duct grading system 6 which are mutually communicated;

the winnowing cavity singulation system 5 comprises a vertical winnowing cavity 5-1, and is used for winnowing and singulating the loosened tobacco leaves and preparing for visual identification and grading of the tobacco leaves;

the air duct grading system 6 comprises: the device comprises an air duct 6-1, first image acquisition modules 6-2 arranged at the upper side and the lower side outside the air duct 6-1, a plurality of vertical grading channels 6-3 arranged below the air duct 6-1 and communicated with the air duct 6-1, and an air supply device;

the first image acquisition module 6-2 is used for acquiring images and carrying out tobacco leaf level positioning according to the images; the air supply device is used for blowing the tobacco leaves of the corresponding grade through the vertical grading channel 6-3 from top to bottom.

Preferably, the tobacco intelligent grading system further comprises: a bin-dividing and stem-aligning system 7 arranged at the downstream of the tobacco leaf grading device;

the bin-dividing stalk-aligning system 7 comprises a first belt 7-1, a second belt 7-2, a plurality of output belts 7-3, second image acquisition modules 7-4 arranged on the upper side and the lower side of the first belt 7-1 and an air supply device;

the first belt 7-1 is positioned below the vertical grading channel 6-3, the first belt 7-1 and the second belt 7-2 are arranged in parallel, and the plurality of output belts 7-3 are respectively vertically arranged at the tail ends of the first belt 7-1 and the second belt 7-2;

the first belt 7-1 is used for receiving tobacco leaves discharged from the vertical grading channel 6-3, and the second image acquisition module 7-4 is used for realizing upper and lower double-sided visual secondary detection in the operation process of the first belt 7-1 so as to further grade the tobacco leaves;

the air supply device is used for transversely conveying the tobacco leaves on the first belt 7-1 to the second belt 7-2 when the second detection of the second image acquisition module 7-4 finds that the tobacco leaves are not the tobacco leaves of the corresponding grade of the channel;

the output belts 7-3 are used for outputting the tobacco leaves of corresponding grades and achieving the effect of aligning the stems of the tobacco leaves.

Preferably, the tobacco intelligent grading system further comprises: the tobacco leaf loosening system is arranged at the upstream of the tobacco leaf grading device;

the tobacco leaf loosening system comprises a vibrating screening device 3 and a vibrating winnowing device 4 which are arranged from upstream to downstream;

wherein, the vibrating screen device 3 is of a multilayer design; the first level of each layer is screen cloth mechanism 3-1, the second level is shaking table 3-2, shaking screening plant 3 still includes: a dust absorber disposed uppermost;

the vibrating winnowing device 4 includes: a winnowing vibration roller way 4-1 arranged at the upper part and a fan 4-2 arranged at the lower part.

Preferably, the tobacco intelligent grading system further comprises: the tobacco leaf loosening system also comprises a vibration channel system 2 arranged on the upstream of the vibration screening device 3;

the vibration channel system 2 comprises an upper layer belt 2-1 and a lower layer belt 2-2 which are obliquely arranged, the upper layer belt 2-1 and the lower layer belt 2-2 form a first clamping section 2-3 positioned at the upstream and a second clamping section 2-4 positioned at the downstream, the first clamping section 2-3 and the second clamping section 2-4 are arranged in a staggered mode in the direction perpendicular to the conveying direction of the tobacco leaves, so that the first clamping section 2-3 and the second clamping section 2-4 can clamp different parts of the tobacco leaves, the first clamping section 2-3 is used for clamping and shaking the tobacco stem ends to separate the tobacco leaves, and the second clamping section 2-4 is used for clamping and shaking the tobacco leaf ends to separate the tobacco leaves;

the vibration channel system 2 further comprises a conveying belt 2-6 which is obliquely arranged and is positioned below the lower layer belt 2-2, and the conveying belt 2-6 is used for collecting and conveying the tobacco leaves shaken off by the first clamping section 2-3 and the second clamping section 2-4 forwards.

Preferably, the tobacco intelligent grading system further comprises: the tobacco leaf loosening system also comprises an artificial bundle untying channel 1 arranged at the most upstream and used for providing a feeding channel after the tobacco leaves are manually untwisted.

Preferably, the air duct 6-1 is provided with an air duct bending section, and the first image acquisition modules 6-2 are arranged on the upper side and the lower side of the air duct bending section to shoot pictures of tobacco leaves to perform tobacco leaf level positioning.

Preferably, the vibration channel system 2 further comprises a dust cover 2-5, wherein the dust cover 2-5 is obliquely arranged outside the first clamping section 2-3 and the second clamping section 2-4 and is used for preventing dust of the first clamping section 2-3 and the second clamping section 2-4.

Preferably, the vibrating roller way 3-2 is an eccentric vibrating roller way, and the winnowing vibrating roller way 4-1 is an eccentric vibrating roller way.

Preferably, the winnowing vibration roller table 4-1 is horizontally arranged, and the front end of the winnowing vibration roller table 4-1 is vertically provided with a pneumatic loosening channel 4-3.

Preferably, the tobacco leaf loosening system comprises at least 2 vibrating air separation devices 4 arranged in series.

The utility model discloses in, mark the direction of delivery of tobacco leaf as from the upper reaches to low reaches.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses in wind channel 6-1, realize the primary classification of tobacco leaf through first image acquisition module 6-2, the tobacco leaf handling capacity is big in wind channel 6-1, and the tobacco leaf velocity of movement is fast, therefore the hierarchical processing speed of tobacco leaf is fast, and the device productivity is high. The existing grading work is mostly finished manually, and in the technical attempt of grading the tobacco leaves by combining mechanical automation and vision technology, the existing mode mostly combines a conveying belt and a vision imaging technology and realizes the grading of the tobacco leaves on a belt channel, so that the processing speed of the tobacco leaf grading is low, the productivity is low, and the actual production requirements can not be met.

In the prior art, tobacco leaf grading is mostly realized on a belt, so that the tobacco leaf grading processing speed is low, and the productivity is low.

2. The utility model discloses still be provided with branch storehouse and neatly stalk system 7 after the tobacco leaf is just hierarchical, carry out the second grade through second image acquisition module 7-4 and detect in vertical hierarchical passageway 6-3 exhaust tobacco leaf in order to further grade. When the second detection of the second image acquisition module 7-4 finds that the tobacco leaves are not the tobacco leaves of the grade corresponding to the channel, the tobacco leaves on the first belt 7-1 are transversely blown onto the second belt 7-2 for further output.

3. Particularly, the utility model discloses in the well wind channel 6-1 set up the wind channel section of bending, and first image acquisition module 6-2 sets up the upper and lower both sides of wind channel section of bending are in order to shoot the positive picture of tobacco leaf and carry out tobacco leaf level location.

Because in the wind channel, the tobacco leaf is the state perpendicular to wind channel basically, and the shooting angle of adjustment of first image acquisition module 6-2 (the utility model discloses the camera) is adjusted more easily and is shot the front (or more be close to the front) of tobacco leaf, and it is big to shoot the area, and the picture can be more abundant presentation to the tobacco leaf characteristic.

Drawings

Fig. 1 is a schematic view of a structure of a manual bundle-removing channel 1.

Fig. 2 is a schematic structural view of the vibration tunnel system 2.

Figure 3 is a schematic diagram of the construction of vibratory screening apparatus 3.

Fig. 4 is a schematic structural view of the vibrating air separation device 4.

Fig. 5 is a schematic structural view of the air separation cavity 5.

Fig. 6 is a schematic structural diagram of a portion of the air duct grading system 6, and only a portion of the air duct bent segment is cut to illustrate the matching relationship between the air duct bent tube and the first image acquisition module.

Fig. 7 is a schematic structural diagram of the bin-dividing and stem-aligning system 7.

Fig. 8 is a layout diagram of the whole tobacco intelligent grading system.

List of reference numerals:

1. the device comprises an artificial bundle removing channel, 2, a vibration channel system, 2-1, an upper layer belt, 2-2, a lower layer belt, 2-3, a first clamping section, 2-4, a second clamping section, 2-5, a dust cover, 2-6, a conveying belt, 3, a vibration screening device, 3-1, a screen mechanism, 3-2, a vibration roller way, 4, a vibration winnowing device, 4-1, a winnowing vibration roller way, 4-2, a fan, 4-3, a pneumatic loosening channel, 5, a winnowing cavity singulation system, 5-1, a vertical winnowing cavity, 5-2, a side air pipe, 6, an air duct grading system, 6-1, an air duct, 6-2, a first image acquisition module, 6-3, a vertical grading channel, 6-4, a removing channel, 7, a bin and stalk grading system, 7-1, a first belt, 7-2, a second belt, 7-3, an output belt, 7-4, a conversion channel, 8, a cigarette packet, 9 and a cigarette bundle.

Detailed Description

The present invention will be described in further detail with reference to examples.

It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "provided" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention is understood according to the specific situation.

It will be understood by those within the art that, unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The utility model provides a tobacco leaf intelligence grading system marks the tobacco leaf direction of delivery into from the upper reaches to low reaches, then tobacco leaf intelligence grading system includes from the upper reaches to low reaches setting and the tobacco leaf loose system, the tobacco leaf grading system, the neat stalk system in branch storehouse 7 of intercommunication each other.

The tobacco leaf loosening system comprises an artificial bundle loosening channel 1, a vibration channel system 2, a vibration screening device 3 and a vibration winnowing device 4 which are arranged from upstream to downstream, and aims to gradually reduce the size of tobacco leaves from large to small and from thick to thin through the mixed action of manpower and machinery, realize the singulation and prepare for grading the tobacco leaves.

The manual bundle opening channel 1 is used for manually opening the whole wrapped tobacco leaves into small bundles of tobacco leaves, the tobacco bale 8 is placed on an operation table through manual operation, the obtained tobacco bundles 9 are fed through manual bundle opening, the drying and crushing in the bundle opening process are controlled, and preliminary loosening is carried out. Considering the problem of breaking, the bundle is firstly solved manually at present, and a mechanical bundle solving mode is explored at the later stage. The manual solution is shown with the channel 1 in detail in fig. 1.

The vibrating channel system 2 comprises two upper-layer belts 2-1 and two lower-layer belts 2-2 which are obliquely arranged, and one upper-layer belt 2-1 and one lower-layer belt 2-2 form a first clamping section 2-3 positioned at the upstream. The other upper belt 2-1 and the other lower belt 2-2 form a second nip 2-4 located downstream. The first clamping section 2-3 and the second clamping section 2-4 are arranged in a staggered manner in the direction perpendicular to the conveying direction of the tobacco leaves, so that the first clamping section 2-3 and the second clamping section 2-4 can clamp different parts of the tobacco leaves. Specifically, the method comprises the following steps: the first clamping section 2-3 clamps and shakes the stem end to separate the tobacco leaves, and then conveys the tobacco leaves to the second clamping section 2-4, and the second clamping section 2-4 clamps and shakes the tobacco leaf end to separate the tobacco leaves.

The vibration channel system 2 further comprises a conveying belt 2-6 which is obliquely arranged and is positioned below the lower layer belt 2-2, and the conveying belt 2-6 is used for collecting and conveying the tobacco leaves shaken off by the first clamping section 2-3 and the second clamping section 2-4 forwards.

The conveyer belts 2-6 can also destroy the connection state of the bonding part of the tobacco leaves when the conveyer belts are conveyed and shaken above, so that the connection part between the tobacco leaves is separated. The vibration channel system 2 further comprises a dust cover 2-5, wherein the dust cover 2-5 is obliquely arranged on the outer side of the first clamping section 2-3 and the second clamping section 2-4 and used for preventing dust of the first clamping section 2-3 and the second clamping section 2-4.

At the first clamping section 2-3, the lower layer belt 2-2 protrudes relative to the upper layer belt 2-1 and is connected with the manual releasing channel 1 to realize the feeding of the tobacco leaves. The conveyor belts 2-6 output the loose tobacco leaves to the vibrating screening device 3. The vibration tunnel system 2 is shown in detail in fig. 2.

The vibrating screening device 3 comprises a screen mechanism 3-1 and a vibrating roller bed 3-2 which are designed in a multilayer mode. The first layer of screen means 3-1 is located below the inlet of the vibratory screening device 3 for receiving tobacco leaves delivered upstream. The first level of each layer is a screen mechanism 3-1, which primarily shakes off tobacco leaves through vibration and primarily screens off impurities of stones in the tobacco leaves through a screen. The second level of each layer is a vibrating roller way 3-2 which consists of an eccentric roller, tobacco leaves enter one vibrating roller way 3-2, are further loosened by the rotation and the rolling of the eccentric roller, namely an irregular roller, and then fall into a loosening mechanism consisting of a lower layer of screen mechanism 3-1 and the vibrating roller way 3-2. And so on until the tobacco leaves are sufficiently shaken out. The vibrating roller ways 3-2 are of a closed structure, and wind power from bottom to top is filled between the vibrating roller ways 3-2, so that the shaking and scattering of tobacco leaves are assisted. The air duct located at the uppermost level in the vibrating screening device 3 is provided with a multistage dust absorber to reduce the raised dust. And meanwhile, the magazine particles among the tobacco leaves are settled in the gap between the eccentric rollers. The specific structure of vibratory screening apparatus 3 is shown in figure 3.

The vibrating winnowing device 4 is shown in figure 4, the upper part of the vibrating winnowing device is still a winnowing vibrating roller table 4-1 formed by an eccentric roller set structure, the lower part of the vibrating winnowing device is provided with a fan 4-2, after tobacco leaves enter the lower part of the vibrating winnowing device 4, the tobacco leaves float upwards under the upward action of wind power and pass through a pneumatic loosening channel 4-3 vertically arranged at the front end, the tobacco leaves are further loosened, the loosened tobacco leaves move to the winnowing vibrating roller table 4-1 to be further vibrated and loosened, and the tobacco leaves are fully loosened through the two vibrating winnowing actions. In this embodiment, the vibrating winnowing devices 4 are two devices connected in series to perform sufficient dispersion treatment on the tobacco leaves.

The tobacco leaf grading device comprises a wind separation cavity single chip system 5 and an air duct grading system 6, and mainly has the functions of wind separation single chip, visual identification grading and channel output.

The air separation cavity single-chip system 5 is used for air separation single chip of the loosened tobacco leaves and preparing for visual identification and grading of the tobacco leaves. The winnowing cavity singulation system 5 comprises a vertical winnowing cavity 5-1. The vertical winnowing cavity 5-1 is supplied with air by positive pressure at the bottom, tobacco leaves are conveyed to the bottom of the vertical winnowing cavity 5-1, the tobacco leaves are conveyed from bottom to top by buoyancy in the vertical winnowing cavity 5-1, under a spiral wind field generated by the action of a side wind pipe, the tobacco leaves which are single-piece are blown out from the top of the vertical winnowing cavity 5-1 while being further torn and loosened, and the multiple pieces of bonded tobacco leaves fall to the bottom for circular wind conveying and loosening treatment again. The single tobacco leaves sent out by the wind enter an air duct grading system 6 for visual grading. Fig. 5 is a schematic structural diagram of the winnowing cavity singulation system 5. The arrows in fig. 5 indicate the direction of wind movement.

The air duct grading system 6 comprises: the device comprises an air duct 6-1, first image acquisition modules 6-2 arranged on the upper side and the lower side outside the air duct 6-1, 3 vertical grading channels 6-3 arranged below the air duct 6-1 and communicated with the air duct 6-1, and an air supply device. After the single tobacco leaves enter the air duct 6-1, image acquisition is carried out from the upper side and the lower side of the air duct 6-1 by adopting the first image acquisition module 6-2, tobacco leaf level positioning is carried out according to the images, and then the tobacco leaves of corresponding levels are blown and discharged from top to bottom by utilizing positive pressure gas provided by the gas supply device. Three vertical grading channels 6-3 arranged below the air duct 6-1 are channels for the tobacco leaves of the corresponding grade to fall down. The first image capturing module 6-2 in this embodiment includes a camera and a light source cooperating with the camera. The air supply device can be a fan or the like. Fig. 6 is a schematic structural diagram of a portion of the air duct grading system 6, which is only shown by cutting out a portion of the bent segment of the air duct. The air duct bending section is a smooth bending section. The lower part of the air duct 6-1 is also connected with an eliminating channel 6-4.

The bin separating and stem aligning system 7 comprises four first belts 7-1, four second belts 7-2, a plurality of output belts 7-3, second image acquisition modules 7-4 arranged on the upper side and the lower side of the first belts 7-1, and an air supply device. The four first belts 7-1 are respectively positioned below the three vertical grading channels 6-3 and the removing channel 6-4, the first belts 7-1 and the second belts 7-2 are arranged in parallel, and the plurality of output belts 7-3 are respectively vertically arranged at the tail ends of the first belts 7-1 and the second belts 7-2 to achieve the effect of stalk alignment. The second image acquisition module 7-4 in this embodiment comprises a camera and a light source cooperating with the camera. The air supply device can be a fan or the like. After the tobacco leaves are initially detected in the air duct 6-1, the tobacco leaves discharged from the vertical grading channel 6-3 or the removing channel 6-4 drop to the first belt 7-1 below from the vertical grading channel 6-3 or the removing channel 6-4, the tobacco leaves are controlled to be in a posture that the length direction of the first belt 7-1 is parallel to the running direction of the first belt 7-1 by the matching of the running speed of the first belt 7-1 and the falling speed of the tobacco leaves, the upper and lower double-sided visual secondary detection is realized in the running process of the first belt 7-1, and the grading accuracy is improved. If the tobacco leaves on the first belt 7-1 are detected for the second time and are not the tobacco leaves of the grade corresponding to the channel, the air supply device transversely blows the tobacco leaves on the first belt 7-1 to the second belt 7-2, and the tobacco leaves are blown to the corresponding output belt 7-3 by the second belt 7-2 to be output. Fig. 7 is a schematic structural view of the bin-dividing and stem-aligning system 7. The transfer of the second belt 7-2 with the output belt 7-3 is not shown in fig. 7, which is of conventional design.

Fig. 8 is a layout diagram of the whole tobacco intelligent grading system. Fig. 8 illustrates another aspect of the air duct staging system 6: the air duct 6-1 is straight, and the first image acquisition modules 6-2 are obliquely arranged on the upper side and the lower side outside the air duct 6-1. This design may also suffice.

Claims (10)

1. The tobacco leaf intelligent grading system is characterized by comprising a tobacco leaf grading device, wherein the tobacco leaf grading device comprises an air separation cavity single-chip system (5) and an air duct grading system (6) which are communicated with each other;

the winnowing cavity singulation system (5) comprises a vertical winnowing cavity (5-1) which is used for winnowing and singulating the loosened tobacco leaves and preparing for visual identification and grading of the tobacco leaves;

the air duct grading system (6) comprises: the air conditioner comprises an air duct (6-1), first image acquisition modules (6-2) arranged at the upper side and the lower side outside the air duct (6-1), a plurality of vertical grading channels (6-3) arranged below the air duct (6-1) and communicated with the air duct (6-1), and an air supply device;

the first image acquisition module (6-2) is used for acquiring images of tobacco leaves and carrying out tobacco leaf level positioning according to the tobacco leaf images; the air supply device is used for blowing the tobacco leaves of the corresponding grade through the vertical grading channel (6-3) from top to bottom.

2. The intelligent tobacco grading system of claim 1, further comprising: a bin-dividing and stem-aligning system (7) arranged at the downstream of the tobacco leaf grading device;

the bin dividing and stem aligning system (7) comprises a first belt (7-1), a second belt (7-2), a plurality of output belts (7-3), second image acquisition modules and an air supply device, wherein the second image acquisition modules and the air supply device are arranged on the upper side and the lower side of the first belt (7-1);

wherein the first belt (7-1) is positioned below the vertical grading channel (6-3), the first belt (7-1) and the second belt (7-2) are arranged in parallel, and the plurality of output belts (7-3) are respectively vertically arranged at the downstream of the first belt (7-1) and the second belt (7-2);

the first belt (7-1) is used for receiving tobacco leaves discharged from the vertical grading channel (6-3), and the second image acquisition module is used for realizing upper and lower double-sided visual secondary detection in the running process of the first belt (7-1) so as to further grade the tobacco leaves;

the air supply device is used for transversely conveying the tobacco leaves on the first belt (7-1) to a second belt (7-2) when the second image acquisition module detects that the tobacco leaves are not the tobacco leaves of the corresponding grade of the channel;

the output belts (7-3) are used for outputting tobacco leaves of corresponding grades and achieving the effect of stem aligning.

3. The intelligent tobacco grading system of claim 1, further comprising: the tobacco leaf loosening system is arranged at the upstream of the tobacco leaf grading device;

the tobacco leaf loosening system comprises a vibrating screening device (3) and a vibrating winnowing device (4) which are arranged from upstream to downstream;

wherein the vibrating screen device (3) is of a multi-layer design; the first level of each layer is screen cloth mechanism (3-1), the second level is roll table (3-2) that shakes, vibratory screening device (3) still include: a dust absorber disposed uppermost;

the vibrating winnowing device (4) comprises: a winnowing vibration roller way (4-1) arranged at the upper part and a fan (4-2) arranged at the lower part.

4. The intelligent tobacco grading system of claim 3, further comprising: the tobacco leaf loosening system also comprises a vibration channel system (2) arranged on the upstream of the vibration screening device (3);

the vibration channel system (2) comprises an upper layer belt (2-1) and a lower layer belt (2-2) which are obliquely arranged, the upper layer belt (2-1) and the lower layer belt (2-2) form a first clamping section (2-3) positioned at the upstream and a second clamping section (2-4) positioned at the downstream, the first clamping section (2-3) and the second clamping section (2-4) are arranged in a staggered mode in the direction perpendicular to the conveying direction of the tobacco leaves, so that the first clamping section (2-3) and the second clamping section (2-4) can clamp different parts of the tobacco leaves, the first clamping section (2-3) is used for clamping and shaking the tobacco stem end to separate the tobacco leaves, and the second clamping section (2-4) is used for clamping and shaking the tobacco leaf end to separate the tobacco leaves;

the vibrating channel system (2) further comprises a conveying belt (2-6) which is obliquely arranged and located below the lower layer belt (2-2), and the conveying belt (2-6) is used for collecting and conveying the tobacco leaves shaken off by the first clamping section (2-3) and the second clamping section (2-4).

5. The tobacco leaf intelligent grading system according to claim 3, characterized in that the tobacco leaf loosening system further comprises an artificial bundle untying channel (1) arranged at the most upstream for providing a feeding channel after the tobacco leaves are manually untwisted.

6. The intelligent tobacco grading system according to claim 1, wherein the air duct (6-1) has an air duct bending section, and the first image acquisition modules (6-2) are arranged on the upper and lower sides of the air duct bending section to take pictures of tobacco leaves for tobacco leaf level positioning.

7. The intelligent tobacco grading system according to claim 4, characterized in that said vibrating channel system (2) further comprises dust covers (2-5), said dust covers (2-5) being obliquely arranged outside said first and second clamping sections (2-3, 2-4) for dust protection of said first and second clamping sections (2-3, 2-4).

8. The tobacco leaf intelligent grading system according to claim 3, characterized in that the vibrating roller table (3-2) is an eccentric vibrating roller table and the winnowing vibrating roller table (4-1) is an eccentric vibrating roller table.

9. The tobacco leaf intelligent grading system according to claim 3, characterized in that the winnowing vibration roller table (4-1) is horizontally arranged, and the front end of the winnowing vibration roller table (4-1) is vertically provided with a pneumatic loosening channel (4-3).

10. The tobacco leaf intelligent grading system according to claim 3, characterized in that it comprises at least 2 vibrating air separation devices (4) arranged in series.

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