Multi-specification tobacco leaf rake nail array processing method for threshing, redrying and moistening processes

Abstract

The invention discloses a multi-specification tobacco leaf rake nail array processing method for threshing, redrying and moistening processes, which comprises the following steps of: respectively adjusting rake nails at an inlet section, a middle section and an outlet section of a hot air leaf moistening machine into a rake nail array formed by permutation and combination of I-shaped rake nails and / or L-shaped rake nails according to different types of supplied tobacco leaves; therefore, the motion trail of the tobacco leaves in the leaf moistening cylinder is a step transition type motion trail. According to the multi-specification tobacco leaf rake nail array processing method in the threshing, redrying and moistening procedures, tobacco leaf incoming materials of different specifications are processed in a targeted mode by changing the array composition and the array mode of rake nails at the inlet section, the middle section and the outlet section of a moistening barrel of a hot air moistening machine; the requirements for uncaking, raking and loosening tobacco leaves of different specifications, prolonging the processing time, reducing the processing time, uniformly loosening the tobacco leaves, increasing the processing area of batch materials and the like are met, the processing effectiveness of the hot air tobacco moistening machine can be more effectively guaranteed, and quality accidents such as steamed tobacco sheets and dry broken tobacco are prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco leaf agricultural product redrying processing equipment, and more specifically, to a method for processing a rake nail array of tobacco leaves of multiple specifications in a leaf beating, redrying and moistening process. Background Art

[0002] In the redrying processing of tobacco agricultural products, the hot air moistening machine is one of the main processing links. Due to the different storage specifications of tobacco leaves, their physical properties and chemical indicators vary greatly.

[0003] The MacTavish hot air moistening machine is the mainstream machine for leaf threshing, redrying and moistening. After being stored, the tobacco leaves are evenly spread on the belt conveyor through the front-end process, and then enter the moistening cylinder of the hot air moistening machine in batches for processing through the metering scale at the front end of the hot air moistening machine feed port. The moistening cylinder forms a 3.5° horizontal angle with the ground, and is driven by two 220V motors at the front and rear ends to rotate clockwise. The tobacco leaves in the cylinder are affected by their own weight and the rotation of the cylinder and gradually move toward the exit. They are lifted to a certain height between the rake nails in the cylinder and then fall down, thereby completing the throwing and uniform loosening of the tobacco cylinder, ensuring the uniformity and quality of tobacco processing, and improving the effectiveness of the tobacco moistening process.

[0004] During the tobacco leaf processing, the moistening cylinder rotates clockwise at a speed of 11r / min. Each batch of processed tobacco leaves is quantitatively processed by a metering scale at a flow rate of 12000kg / h. Taking Yunnan Qujing tobacco leaves as an example, the average length of tobacco leaves is 60cm. Due to different needs, each batch of tobacco leaves has different cutting methods for different parts of tobacco leaves, which can be divided into four different specifications of processing forms: "one knife two sections", "two knives three sections", "full leaf type", and "module sheet tobacco type". Among them, the "one-knife two-section type" refers to the tobacco leaves, due to the requirements of the tobacco cut module formula ratio, are cut into two sections along the middle part of the tobacco leaves when passing through the front-end leaf laying and swinging process, so as to divide the tobacco leaves into leaf tip and leaf base for processing, among which the average tip is about 20cm, and the average base is about 40cm; the "two-knife three-section type" refers to the tobacco leaves, due to the requirements of the tobacco cut module formula ratio, are cut into three sections along the tip, body and base of the tobacco leaves when passing through the front-end leaf laying and swinging process, so as to divide the tobacco leaves into leaf tip, body and base for processing, among which the average tip is about 15cm, the average body is about 20cm, and the average base is about 25c m; "whole leaf shaping" means that due to the requirements of the tobacco module formula ratio, the tobacco leaves are not cut when passing through the front-end leaf laying and swinging process, and the tobacco leaves retain the original length of 60cm for processing; "module sheet tobacco type" means that the incoming tobacco leaves are sheet tobacco structures after beating, and no cutting is required. The tobacco leaves are processed and mixed in the form of finished sheet tobacco structures for secondary processing. The sheet tobacco structure is a mixed structure with a large sheet rate of 25%-35% (leaf size>12.7mm), a medium sheet rate of 45%-55% (leaf size>6.35mm), and a fragmentation rate ≤5% (leaf size<2.36mm).

[0005] During the processing of tobacco leaves of four different specifications, the hot air moistening machine regulates temperature, pressure and moisture according to different process instruction requirements. After the tobacco leaves enter the hot air moistening machine, they rotate with the cylinder driven by the rake nails. After rotating to a certain height, they fall to the bottom of the cylinder under gravity, so as to evenly loosen the batch of tobacco leaves. However, since the arrangement of rake nails inside the hot air moistening machine is currently a fixed design, there is no ability to adjust the length specifications of different tobacco leaves, resulting in the processing of tobacco leaves of different specifications and lengths using a fixed rake nail configuration. During the processing, the tobacco leaves cannot be raked and pushed in time, and the tobacco leaves cannot be completely rotated. They fall under gravity at 9-10 o'clock on the tobacco cylinder, and the uniform looseness is insufficient. The tobacco leaves are clumped, and the inner core part of the tobacco leaves cannot be completely moistened. The external tobacco leaves are over-processed to produce the "steaming" phenomenon. The processing quality of tobacco materials in the hot air moistening machine cannot be guaranteed, and a large number of unqualified products are produced, which seriously affects the stability of the raw material processing quality and the demand for high-end raw material processing.

[0006] Therefore, there is an urgent need for a method for processing a rake nail array of tobacco leaves of multiple specifications in the leaf threshing, re-drying and moisturizing process. Summary of the invention

[0007] The purpose of the present invention is to provide a method for processing tobacco leaves of multiple specifications with a rake nail array in the leaf beating, re-roasting and moisturizing process, so as to solve the problems in the above-mentioned prior art and to carry out targeted processing on tobacco leaves of different specifications to meet the needs of de-agglomerating, loosening, extending the processing time, reducing the processing time, loosening evenly, and increasing the processing area of ​​batch materials.

[0008] The present invention provides a method for processing a rake nail array for tobacco leaves of multiple specifications in the leaf beating, re-drying and moistening process, which includes: according to different types of incoming tobacco leaves, the rake nails at the inlet section, the middle section and the outlet section of the hot air leaf moistening machine are adjusted to a rake nail array of an arrangement combination of I-type rake nails and / or L-type rake nails, so that the movement trajectory of the tobacco leaves in the leaf moistening cylinder presents a step-transition movement trajectory.

[0009] The method for processing rake nail arrays of tobacco leaves of multiple specifications in the leaf beating, re-drying and moisturizing process as described above, wherein preferably, the rake nail arrays at the inlet section of the hot air leaf moisturizing machine, the middle section of the hot air leaf moisturizing machine and the outlet section of the hot air leaf moisturizing machine adopt a regular dodecagonal endpoint distribution coaxial with the leaf moisturizing cylinder, and each rake nail array is tilted and rotated by an angle of 30° to form a step-type rake nail array.

[0010] The method for processing tobacco leaves of multiple specifications by rake nail array in the leaf beating, re-roasting and moistening process as described above, wherein preferably, the tobacco leaf types include: one-knife two-section type tobacco leaves, two-knife three-section type tobacco leaves, full-leaf beating type tobacco leaves and modular sheet tobacco leaves.

[0011] The method for processing a rake nail array of multiple specifications of tobacco leaves in the leaf beating, re-drying and moistening process as described above, wherein preferably, for different types of incoming tobacco leaves, the rake nails at the inlet section, the middle section and the outlet section of the hot air moistening machine are respectively adjusted to a rake nail array of an arrangement combination of I-type rake nails and / or L-type rake nails, so that the movement trajectory of the tobacco leaves in the leaf moistening cylinder presents a step-transition movement trajectory, specifically comprising:

[0012] For the incoming tobacco leaves of one-knife-two-stage type, the entrance section of the hot air moistening machine adopts a combination arrangement of two groups of L-shaped rake nails and I-shaped rake nails, so that the tobacco leaves of this specification can fall at the 12 o'clock position when the moistening cylinder rotates clockwise; in the middle section of the hot air moistening machine, a combination arrangement of 12 I-shaped rake nails is adopted; in the exit section of the hot air moistening machine, a combination arrangement of one group of L-shaped rake nails and I-shaped rake nails is adopted, so that the tobacco leaves fall in advance at the 11 o'clock position during the spinning process and are evenly shaken for discharge;

[0013] For the incoming two-knife three-stage tobacco leaves, a combination of a set of L-shaped rake nails and I-shaped rake nails is arranged at the entrance section of the hot air moistening machine, so that the tobacco leaves of this specification can fall at the 12 o'clock position when the moistening cylinder rotates clockwise; a combination of 12 I-shaped rake nails is arranged in the middle section of the hot air moistening machine; a combination of a set of L-shaped rake nails and I-shaped rake nails is arranged at the exit section of the hot air moistening machine, so that the tobacco leaves can fall at the 11 o'clock position for easy discharge;

[0014] For the incoming whole-leaf tobacco leaves, a combination of a set of L-shaped rake nails and I-shaped rake nails is arranged at the entrance section of the hot air moistening machine, so that the tobacco leaves of this specification can fall at the 12 o'clock position when the moistening cylinder rotates clockwise; a combination of 12 I-shaped rake nails is arranged in the middle section of the hot air moistening machine; a combination of a set of L-shaped rake nails and I-shaped rake nails is arranged at the exit section of the hot air moistening machine, so that the tobacco leaves can fall at the 11 o'clock position for easy discharge;

[0015] For modular tobacco leaves, a combination of I-type rake nails is used at the entrance section of the hot air moisturizing machine, so that the tobacco leaves of this specification can fall at the 12 o'clock position as the leaf moistening cylinder rotates clockwise; a combination of 12 I-type rake nails is used in the middle section of the hot air moisturizing machine; and 1 I-type rake nail is used in the exit section of the hot air moisturizing machine, so that the tobacco leaves can fall at the 11 o'clock position for easy discharge.

[0016] The method for processing a rake nail array of multiple specifications of tobacco leaves in the leaf threshing, redrying and moistening process as described above, wherein preferably, for the one-knife two-section type tobacco leaves, at the entrance section of the hot air leaf moistening machine, the length of each group of L-shaped rake nails is 200mm, and the length of each group of I-shaped rake nails is 200mm; in the middle section of the hot air leaf moistening machine; the length of each group of I-shaped rake nails is 200mm; at the exit section of the hot air leaf moistening machine, the length of the L-shaped rake nails is 200mm, and the length of the I-shaped rake nails is 300mm;

[0017] For two-knife three-section tobacco leaves, at the entrance section of the hot air moistening machine, the length of the L-type rake nail is 300mm, and the length of the I-type rake nail is 200mm; in the middle section of the hot air moistening machine, the length of each group of I-type rake nails is 200mm; at the exit section of the hot air moistening machine, the length of the L-type rake nail is 300mm, and the length of the I-type rake nail is 200mm;

[0018] For the whole leaf tobacco material, at the entrance section of the hot air moistening machine, the length of the L-type rake nail is 200mm, and the length of the I-type rake nail is 200mm; in the middle section of the hot air moistening machine, the length of each group of I-type rake nails is 200mm; at the exit section of the hot air moistening machine, the length of the L-type rake nail is 200mm, and the length of the I-type rake nail is 200mm;

[0019] For modular tobacco leaf materials, at the entrance section of the hot air moisturizing machine, the length of the I-type rake nails is 300mm; in the middle section of the hot air moisturizing machine, the length of each group of I-type rake nails is 200mm; at the exit section of the hot air moisturizing machine, the length of the I-type rake nails is 300mm.

[0020] The method for processing a rake nail array for tobacco leaves of multiple specifications in the leaf beating, re-drying and moisturizing process as described above, wherein preferably, the rake nails at the inlet section of the hot air leaf moisturizing machine, the middle section of the hot air leaf moisturizing machine and the outlet section of the hot air leaf moisturizing machine all adopt a quick-release fixing structure.

[0021] The method for processing a rake nail array for tobacco leaves of multiple specifications in the leaf beating, re-drying and moisturizing process as described above, wherein preferably, the rake nails at the inlet section of the hot air leaf moisturizing machine, the middle section of the hot air leaf moisturizing machine and the outlet section of the hot air leaf moisturizing machine are installed on a quick-release base through threaded connection and a locking mechanism; and the quick-release base is welded to the inner wall of the leaf moisturizing cylinder.

[0022] The present invention provides a method for processing tobacco leaves of multiple specifications by rake nail arrays in the process of beating, re-drying and moistening leaves. By changing the array composition and array mode of rake nails in the inlet section, middle section and outlet section of the leaf moistening cylinder of a hot air leaf moistening machine, targeted processing is carried out on incoming tobacco leaves of different specifications, so as to meet the requirements of de-agglomerating, rake loosening, extending processing time, reducing processing time, uniform loosening, increasing batch material processing area and the like of tobacco leaves of different specifications, and can more effectively ensure the effectiveness of processing by the hot air leaf moistening machine, and prevent quality accidents such as steamed tobacco leaves and dried and broken tobacco leaves; a method is provided for matching with a MacTavish type hot air leaf moistening machine, and installing rake nail arrays of different specifications for adjusting and processing incoming tobacco leaves of different specifications, which does not affect the existing functions of the hot air leaf moistening machine and strengthens the auxiliary processing effect of the rake nails in the leaf moistening machine on incoming tobacco leaves of different specifications; and the rake nail array can be used to process tobacco leaves and tobacco leaves of multiple specifications in the processing link of the hot air leaf moistening machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described below with reference to the accompanying drawings, in which:

[0024] Figure 1 A schematic diagram of an embodiment of a method for processing a rake nail array of tobacco leaves of multiple specifications in a leaf threshing, redrying and moistening process provided by the present invention;

[0025] Figure 2 is the process flow diagram of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the hot air leaf moistening machine of the present invention;

[0027] Figure 4 It is a schematic diagram of a rake array;

[0028] Figure 5This is the disassembly and assembly diagram of the rake nail.

[0029] Explanation of the accompanying drawings: 1- hot air leaf moistening machine main body, 2- inner wall of leaf moistening cylinder, 3- inlet section of hot air leaf moistening machine, 4- middle section of hot air leaf moistening machine, 5- outlet section of hot air leaf moistening machine, 6- inlet section rake nail, 7- middle section rake nail, 8- outlet section rake nail, 9- rake nail, 10- quick release base, 11- locking mechanism. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0031] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprises" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When a specific component is described as being connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0033] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0035] At present, the processing methods of different specifications of incoming materials often adopt targeted methods to reduce the processing intensity. For example, when using the existing rake nail mode to process "full leaf type" tobacco, it is necessary to appropriately reduce the required temperature and moisture for weak processing, and at the same time extend the processing time in the barrel of each batch of tobacco leaves, and try to process most of the tobacco leaves to the standard line. However, due to the insufficient grasping height of the rake nails, the tobacco leaves are too long, resulting in clumping and entanglement, resulting in quality defects such as steamed tobacco and green tobacco; in the processing of "module tobacco type", if the existing rake nail arrangement mode is used, it is necessary to appropriately shorten the processing time, speed up the barrel speed, ensure that the tobacco leaves can be fully driven to rotate and rake loose in the barrel, avoid tobacco leaf compaction, and adopt the form of "violent fire stir-frying" for processing, but due to the insufficient grasping capacity of the rake nails, some tobacco leaves are not lifted to a sufficient height, and are not rake loose and compacted after falling, resulting in quality defects such as crushing and scorching.

[0036] like Figure 1 As shown, the method for processing a rake nail array of tobacco leaves of multiple specifications in the leaf threshing, re-drying and moistening process provided in this embodiment specifically includes:

[0037] According to different types of incoming tobacco leaves, the rake nails at the entrance section, middle section and exit section of the hot air leaf moistening machine are adjusted to a rake nail array of an arrangement combination of I-type rake nails and / or L-type rake nails, so that the movement trajectory of the tobacco leaves in the leaf moistening cylinder presents a step-jump motion trajectory.

[0038] Among them, the rake nail arrays at the inlet section, the middle section and the outlet section of the hot air leaf moistening machine adopt a regular dodecagonal endpoint distribution with the same center line as the leaf moistening cylinder, and each rake nail array is rotated at an angle of 30° to form a step-type rake nail array, so that when the leaf moistening cylinder spins, the rake nail array and the rotation angle match, so that the tobacco leaves change from the original irregular rolling to a step-like fall, standardize the falling trajectory of batches of tobacco leaves, make the falling of tobacco leaves in the cylinder more regular and controllable, and the falling area is uniform and loose, so that it falls evenly on the inner wall of the lower half of the cylinder, which is convenient for the effectiveness of processing batches of tobacco leaves in the hot air leaf moistening machine.

[0039] like Figure 3As shown, the hot air leaf moistening machine comprises: a hot air leaf moistening machine body 1, an inner wall of a leaf moistening cylinder 2, an inlet section 3 of the hot air leaf moistening machine, a middle section 4 of the hot air leaf moistening machine, an outlet section 5 of the hot air leaf moistening machine, an inlet section rake nail 6, an inlet section guide plate (not shown), a middle section rake nail 7, an outlet section rake nail 8, and an outlet section guide plate (not shown). The inner wall of the leaf moistening cylinder 2 and the main body 1 of the hot air leaf moistening machine are designed independently. The main body 1 of the leaf moistening machine remains stationary, and the inner wall of the leaf moistening cylinder 2 is driven by two motors on both sides to rotate clockwise. The incoming tobacco leaves are quantitatively fed into the hot air leaf moistening machine through the metering scale in front of the inlet section. After the materials enter the inlet section 3 of the hot air leaf moistening machine, they are affected by gravity and the inertia of the belt conveyor and enter the cylinder in a parabola downward. Under the blocking and hooking of the rake nails 6 in the inlet section of the cylinder, they are evenly loosened. Under the action of the rotation of the cylinder, the tobacco leaves roll clockwise in the cylinder and continue to collide with the rake nails 6 in the entrance section. At the same time, they are affected by the 3.5° angle between the cylinder and the ground and continue to move toward the exit section. When entering the middle section 4 of the hot air leaf moisturizing machine, they are driven by the middle section rake nails 7 to fall due to gravity after the cylinder rotates. This method is repeated continuously. When entering the exit section 5 of the hot air leaf moisturizing machine, the rake nails 8 in the exit section mainly play a role in loosening the tobacco leaves and preventing them from clumping and entanglement, connecting the tobacco leaves, and following the movement of the cylinder to the top of the cylinder where they fall due to gravity to loosen the tobacco pile.

[0040] Furthermore, the tobacco leaf types include: one-cut two-section tobacco leaves, two-cut three-section tobacco leaves, full-leaf threshing tobacco leaves and modular sheet tobacco leaves. The one-cut two-section tobacco leaf materials are divided into the leaf tip and leaf base for processing, wherein the leaf tip is about 20 cm on average, and the leaf base is about 40 cm on average. The materials will be entangled, and the leaf tip is not resistant to processing. In order to prevent the tobacco leaf base from being entangled and clumped, the leaf tip is over-processed. The two-cut three-section tobacco leaf materials are divided into the leaf tip, leaf body and leaf base for processing, wherein the leaf tip is about 15 cm on average, the leaf body is about 20 cm on average, and the leaf base is about 25 cm on average. The material has more parts and is easy to clump. The tobacco leaves of the full-leaf threshing tobacco leaf materials retain the original length of 60 cm for processing. The length of the tobacco leaf materials is longer, and the tobacco leaves have strong resistance to processing. The tobacco leaves of modular tobacco leaf materials are processed by secondary processing and mixing in the structure of finished tobacco leaves. The tobacco leaf structure is a mixed structure with a large leaf rate of 25%-35% (leaf size>12.7mm), a medium leaf rate of 45%-55% (leaf size>6.35mm), and a fragment rate of ≤5% (leaf size<2.36mm). This material is a tobacco leaf structure, easy to dry and break, and harden. Figure 1As described above, the present invention can adjust the rake nail arrays at the inlet section 3, the middle section 4 and the outlet section 5 of the hot air leaf moistening machine accordingly according to the different physical properties, chemical properties and processing resistance of different tobacco leaves. When the tobacco leaves enter through the parabola, the rake nails 6 in the inlet section can effectively prevent the leaves from falling and agglomerating, play a maximum deagglomerating role, increase the lifting force of the rake nails, and ensure the falling position of the tobacco leaves in the cylinder; when the tobacco leaves are processed in the middle section, the rake nails 8 in the middle section play a role in standardizing the movement trajectory of the tobacco leaves, ensuring that the tobacco leaves follow the self-rotating motion of the leaf moistening cylinder and uniformly distribute the materials; when the tobacco leaves are processed in the outlet section, the tobacco leaves are easily adhered, agglomerated, and compacted due to the high temperature and high humidity. The rake nails 9 in the outlet section play a role in secondary loosening, ensuring the falling position of the tobacco leaves in the cylinder and uniformly distributing the materials.

[0041] Specifically, if Figure 4 As shown, for the one-knife two-stage tobacco leaves, the hot air moistening machine entrance section 3 adopts a combination arrangement of two groups of L-shaped rake nails and I-shaped rake nails, and cooperates with the guide plate to loosen and de-agglomerate the tobacco leaves at the entrance to prevent the tobacco leaves from being entangled during processing and reduce the processing strength of the leaf tips, so that the tobacco leaves of this specification can fall at the 12 o'clock position when the leaf moistening cylinder rotates clockwise; in the middle section 4 of the hot air moistening machine, a combination arrangement of 12 I-shaped rake nails is adopted to ensure uniform processing of the tobacco leaves; in the outlet section 5 of the hot air moistening machine, a combination arrangement of a group of L-shaped rake nails and I-shaped rake nails is adopted to prevent the tobacco leaves from re-agglomerating after humidification, so that the tobacco leaves can fall in advance at the 11 o'clock position during the spinning process to be evenly shaken for discharge;

[0042] For the incoming tobacco leaves of two-knife three-stage type, a combination of a group of L-shaped rake nails and I-shaped rake nails is arranged at the entrance section 3 of the hot air moistening machine, and the guide plate is used to loosen and disintegrate the tobacco leaves at the entrance to prevent the tobacco leaves from being entangled during processing, extend the processing time, and make the tobacco leaves of this specification fall at the 12 o'clock position when the moistening cylinder rotates clockwise; a combination of 12 I-shaped rake nails is arranged in the middle section 4 of the hot air moistening machine to extend the processing time and ensure the uniformity of tobacco leaf processing; a group of L-shaped rake nails and I-shaped rake nails are arranged in the outlet section 5 of the hot air moistening machine to rake loose the tobacco leaves again to prevent them from clumping and entanglement, so that the tobacco leaves fall at the 11 o'clock position for easy discharge;

[0043] For the incoming whole-leaf shaped tobacco leaves, a combination of a group of L-shaped rake nails and I-shaped rake nails is arranged at the entrance section 3 of the hot air moistening machine, and the guide plate is used to loosen and disintegrate the tobacco leaves at the entrance to prevent the tobacco leaves from being entangled during processing, extend the processing time, and make the tobacco leaves of this specification fall at the 12 o'clock position when the moistening cylinder rotates clockwise; a combination of 12 I-shaped rake nails is arranged in the middle section 4 of the hot air moistening machine to extend the processing time and ensure the uniformity of tobacco leaf processing; a combination of a group of L-shaped rake nails and I-shaped rake nails is arranged at the outlet section 5 of the hot air moistening machine to rake loose the tobacco leaves again to prevent them from clumping and entanglement, so that the tobacco leaves fall at the 11 o'clock position for easy discharge;

[0044] For modular tobacco leaf materials, a combination of I-type rake nails is used in the inlet section 3 of the hot air leaf moistening machine, and the guide plates are used to loosen the tobacco leaves at the inlet to prevent them from becoming compacted. The tobacco pile is raked loose so that the tobacco leaves of this specification can fall at the 12 o'clock position when the leaf moistening cylinder rotates clockwise; a combination of 12 I-type rake nails is used in the middle section 4 of the hot air leaf moistening machine to extend the processing time and ensure the uniformity of tobacco leaf processing; and one I-type rake nail is used in the outlet section 5 of the hot air leaf moistening machine to loosen the tobacco leaves again to prevent the tobacco leaves from becoming compacted after heating and agglomerating when encountering condensed water, so that the tobacco leaves can fall at the 11 o'clock position for easy discharge.

[0045] In one embodiment of the present invention, for one-knife two-stage tobacco leaves, at the inlet section 3 of the hot air moistening machine, the length of each group of L-shaped rake nails is 200 mm, and the length of each group of I-shaped rake nails is 200 mm; at the middle section 4 of the hot air moistening machine; the length of each group of I-shaped rake nails is 200 mm; at the outlet section 5 of the hot air moistening machine, the length of the L-shaped rake nails is 200 mm, and the length of the I-shaped rake nails is 300 mm;

[0046] For the two-knife three-stage tobacco leaves, at the entrance section 3 of the hot air moistening machine, the length of the L-type rake nail is 300mm, and the length of the I-type rake nail is 200mm; at the middle section 4 of the hot air moistening machine, the length of each group of I-type rake nails is 200mm; at the exit section 5 of the hot air moistening machine, the length of the L-type rake nail is 300mm, and the length of the I-type rake nail is 200mm;

[0047] For the whole leaf tobacco leaves, at the entrance section 3 of the hot air moistening machine, the length of the L-type rake nail is 200mm, and the length of the I-type rake nail is 200mm; at the middle section 4 of the hot air moistening machine, the length of each group of I-type rake nails is 200mm; at the exit section 5 of the hot air moistening machine, the length of the L-type rake nail is 200mm, and the length of the I-type rake nail is 200mm;

[0048] For modular tobacco leaf materials, at the inlet section 3 of the hot air moisturizing machine, the length of the I-type rake nails is 300 mm; at the middle section 4 of the hot air moisturizing machine, the length of each group of I-type rake nails is 200 mm; at the outlet section 5 of the hot air moisturizing machine, the length of the I-type rake nails is 300 mm.

[0049] In summary, the entrance section rake nails 6 are designed as L-shaped rake nails with a length of 300mm, I-shaped rake nails with a length of 300mm, L-shaped rake nails with a length of 200mm and I-shaped rake nails with a length of 200mm according to the different requirements of the length of the processed tobacco leaves, and are combined to form a rake nail array to meet the targeted processing requirements. The entrance section rake nail array 6 is a combination of the above four rake nails. Each adjustment only selects two specifications of rake nails to be combined into a group, and each two groups form a row, and a row of rake nails is arranged according to the regular twelve-sided endpoints that are coaxial with the leaf moistening cylinder to form a rake nail array.

[0050] The middle section rake nails 7 are in the form of I-type rake nails with a length of 200 mm, 12 in a row, and the rake nails are arranged according to the twelve-sided end points coaxial with the leaf moistening cylinder to form a rake nail array.

[0051] The array of the outlet section rake nails 8 is a combination of four types of rake nails, namely, L-type rake nails with a length of 300 mm, I-type rake nails with a length of 300 mm, L-type rake nails with a length of 200 mm, and I-type rake nails with a length of 200 mm. Each time adjustment is made, only two specifications of rake nails are selected for combination and arrangement, and each two groups form a row. A row of rake nails is arranged according to the end points of the regular dodecagon in the same center line direction as the leaf moistening cylinder to form a rake nail array.

[0052] like Figure 1 As shown, the present invention provides a corresponding arrangement mode of rake nail arrays in the leaf moistening cylinder for the processing requirements of four different types of tobacco leaf processing forms, namely, one-knife two-stage type, two-knife three-stage type, whole-leaf type, and modular sheet tobacco type, according to the different specifications of tobacco leaf materials. The front, middle, and rear end rake nail arrays in the leaf moistening cylinder of the hot air leaf moistening machine can be adjusted before processing to meet the tobacco leaf processing process instructions for batch tobacco leaf processing time, processing strength, anti-caking and hardening functions, ensure the realization of the processing functions of the hot air leaf moistening machine, meet the precise processing of leaf moistening of tobacco leaves of different shapes and lengths, and make batches of tobacco leaves The leaves are evenly loosened, and the rake nail array adopts a design of a regular dodecagon with the same center line and an angle of 30° in sequence, so that the tobacco leaves form an "up and down stairs" motion trajectory when moving in the cylinder, and the original spiral motion of the tobacco leaves in the leaf moistening cylinder is changed to a step-like jump. The tobacco leaves are loosened while jumping, and the lifting and grasping force of the rake nails on batches of tobacco leaves is improved. According to processing requirements, the processing strength and looseness of batches of tobacco leaves can be more effectively controlled to prevent clumping, and the lifting force of the rake nails can be strengthened. According to different arrangements of the entire row, the number of rake nails, and different specifications and sizes, the processing strength and uniform looseness of the tobacco leaves can be controlled.

[0053] Furthermore, the rake nails 9 at the hot air moistening machine entrance section 3, the hot air moistening machine middle section 4 and the hot air moistening machine exit section 5 all adopt a quick-release fixed structure. The quick-release rake nail design can quickly replace the rake nails, which is convenient for replacement and adjustment to meet the needs of timely adjusting the rake nail array composition of different specifications of incoming tobacco leaves, and conveniently replace the rake nail array arrangement of the corresponding area according to the processing instructions to continuously optimize the processing effect. Specifically, Figure 5As shown, the rake nails 9 at the inlet section 3 of the hot air leaf moistening machine, the middle section 4 of the hot air leaf moistening machine, and the outlet section 5 of the hot air leaf moistening machine are installed on the quick-release base 10 through threaded connection and locking mechanism 11. Specifically, the inlet section rake nail 6 is installed at the quick-release base 10 position of the inlet section 3 of the hot air leaf moistening machine through threaded connection and locking mechanism 11, ensuring that no cutting or welding is required when the rake nail needs to be disassembled or replaced, and only one person needs to use a universal wrench to complete the replacement; the middle section rake nail 7 is installed at the quick-release base 10 position of the middle section 4 of the hot air leaf moistening machine through threaded connection and locking mechanism 11; the outlet section rake nail 8 is installed at the quick-release base 10 position of the outlet section 5 of the hot air leaf moistening machine through threaded connection and locking mechanism 11. The quick-release base 10 is welded on the inner wall 2 of the leaf moistening cylinder to fix the installation position of the rake nail. When the rake nail does not need to be installed, the rake nail can be directly removed without affecting the normal function.

[0054] like Figure 2 As shown, the process flow of tobacco leaves is as follows: tobacco leaves enter the front end of the hot air leaf moistening machine in a quantitative manner through a metering scale; tobacco leaves enter the front end belt conveyor for transportation; tobacco leaves fall parabolically from the belt conveyor; enter the leaf moistening cylinder of the hot air leaf moistening machine; are lifted up by the rake nail array in the inlet section; the rake nails in the inlet section are loose; tobacco leaves move with the rake nails to the twelve o'clock position of the cylinder and fall; tobacco leaves fall evenly and gradually move forward with the angle of the cylinder; tobacco leaves enter the middle section of the leaf moistening cylinder; are lifted up with the movement of the rake nails in the middle section; fall to the twelve o'clock position of the cylinder; the rake nails in the middle section are evenly dispersed; tobacco leaves enter the outlet section; the rake nails in the outlet section are loose; the rake nails in the outlet section are lifted to the eleven o'clock position and then fall; tobacco leaves fall evenly to the lower half of the cylinder; tobacco leaves complete the raking process; tobacco leaves evenly complete the leaf moistening process; tobacco leaves leave the hot air leaf moistening machine and enter the next process.

[0055] The present invention analyzes the physical and chemical properties and processing resistance of the incoming tobacco leaves, and specifically combines and disassembles the rake nail arrays of the entrance section, middle section and exit section inside the leaf moistening cylinder, thereby improving the original spiral motion trajectory of the tobacco leaves rolling with the cylinder into an "up and down staircase-like" step-by-step motion trajectory, so as to enhance the rake nail grasping force, increase the running height of the tobacco leaves, control the falling position of the tobacco leaves, prevent the tobacco leaves from clumping and hardening during processing in the leaf moistening cylinder, resulting in insufficient uniformity in tobacco leaf processing, increase the processing area of ​​batches of tobacco leaves, reduce drying and crushing, extend the processing time in the cylinder, enhance the moisturizing effect of the hot air leaf moistening machine, and fully and evenly and loosen the batches of tobacco leaves being processed.

[0056] The present invention provides an arrangement method of a leaf moistening cylinder rake nail array for processing four different specifications of tobacco leaves, namely, one-knife two-stage type, two-knife three-stage type, whole-leaf beating type, and modular sheet tobacco type; the method can make corresponding adjustments to the physical, chemical properties and processing resistance strength of tobacco leaves of four different forms and specifications processed in a hot air leaf moistening machine, and utilize the combined arrangement of the rake nail arrays in the inlet section, middle section, and outlet section of the hot air leaf moistening machine to achieve targeted effects on tobacco leaf processing in different areas, and prevent quality defects such as tobacco leaves becoming damp and clumping, sheet tobacco becoming compacted and not loose, over-processing of tobacco leaves at the edge of agglomerations to produce steamed sheets, insufficient processing strength of tobacco leaves in the center of agglomerations to produce green tobacco, and over-processing of sheet tobacco to produce scorched, dry and broken, etc., which are caused by the processing of tobacco leaves of different forms.

[0057] The embodiment of the present invention provides a method for processing tobacco leaves of multiple specifications by a rake nail array in the leaf beating, re-drying and moistening process. By changing the array composition and array mode of the rake nails in the inlet section, middle section and outlet section of the leaf moistening cylinder of the hot air leaf moistening machine, targeted processing is performed on incoming tobacco leaves of different specifications to meet the requirements of de-agglomerating, loosening, extending the processing time, reducing the processing time, loosening evenly, increasing the processing area of ​​batch materials, etc., which can more effectively ensure the effectiveness of the hot air leaf moistening machine processing and prevent quality accidents such as steamed tobacco leaves and dried and broken tobacco; a method is provided to match the MacTavish type hot air leaf moistening machine, and to install rake nail arrays of different specifications for adjusting and processing incoming tobacco leaves of different specifications, which does not affect the existing functions of the hot air leaf moistening machine and strengthens the auxiliary processing effect of the rake nails in the leaf moistening machine on incoming tobacco leaves of different specifications; the rake nail array can be used to process tobacco leaves and tobacco leaves of multiple specifications in the processing link of the hot air leaf moistening machine.

[0058] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0059] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method for processing a rake nail array of tobacco leaves of multiple specifications in a leaf threshing, re-roasting and moistening process, characterized in that: include: According to different types of incoming tobacco leaves, the rake nails at the entrance section, middle section and exit section of the hot air leaf moistening machine are adjusted to a rake nail array of an arrangement combination of I-type rake nails and / or L-type rake nails, so that the movement trajectory of the tobacco leaves in the leaf moistening cylinder presents a step-jump motion trajectory.

2. The method for processing a rake nail array of multiple specifications of tobacco leaves in the leaf threshing, redrying and moistening process according to claim 1 is characterized in that: The rake nail arrays at the inlet section, the middle section and the outlet section of the hot air leaf moisturizer adopt a regular dodecagonal endpoint distribution that is coaxial with the leaf moisturizing cylinder, and each rake nail array is tilted and rotated by 30° to form a step-type rake nail array.

3. The method for processing a rake nail array of multiple specifications of tobacco leaves in the leaf threshing, redrying and moistening process according to claim 1, characterized in that: The tobacco leaf types include: one-cut two-section type tobacco leaves, two-cut three-section type tobacco leaves, full-leaf type tobacco leaves and modular sheet tobacco leaves.

4. The method for processing a rake nail array of multiple specifications of tobacco leaves in the leaf threshing, redrying and moistening process according to claim 3 is characterized in that: According to the different types of incoming tobacco leaves, the rake nails at the inlet section, the middle section and the outlet section of the hot air leaf moistening machine are respectively adjusted to a rake nail array of an arrangement combination of I-type rake nails and / or L-type rake nails, so that the movement trajectory of the tobacco leaves in the leaf moistening cylinder presents a step-by-step movement trajectory, specifically including: For the incoming tobacco leaves of one-knife-two-stage type, the entrance section of the hot air moistening machine adopts a combination arrangement of two groups of L-shaped rake nails and I-shaped rake nails, so that the tobacco leaves of this specification can fall at the 12 o'clock position when the moistening cylinder rotates clockwise; in the middle section of the hot air moistening machine, a combination arrangement of 12 I-shaped rake nails is adopted; in the exit section of the hot air moistening machine, a combination arrangement of one group of L-shaped rake nails and I-shaped rake nails is adopted, so that the tobacco leaves fall in advance at the 11 o'clock position during the spinning process and are evenly shaken for discharge; For the incoming two-knife three-stage tobacco leaves, a combination of a set of L-shaped rake nails and I-shaped rake nails is arranged at the entrance section of the hot air moistening machine, so that the tobacco leaves of this specification can fall at the 12 o'clock position when the moistening cylinder rotates clockwise; a combination of 12 I-shaped rake nails is arranged in the middle section of the hot air moistening machine; a combination of a set of L-shaped rake nails and I-shaped rake nails is arranged at the exit section of the hot air moistening machine, so that the tobacco leaves can fall at the 11 o'clock position for easy discharge; For the incoming whole-leaf tobacco leaves, a combination of a set of L-shaped rake nails and I-shaped rake nails is arranged at the entrance section of the hot air moistening machine, so that the tobacco leaves of this specification can fall at the 12 o'clock position when the moistening cylinder rotates clockwise; a combination of 12 I-shaped rake nails is arranged in the middle section of the hot air moistening machine; a combination of a set of L-shaped rake nails and I-shaped rake nails is arranged at the exit section of the hot air moistening machine, so that the tobacco leaves can fall at the 11 o'clock position for easy discharge; For modular tobacco leaves, a combination of I-type rake nails is used at the entrance section of the hot air moisturizing machine, so that the tobacco leaves of this specification can fall at the 12 o'clock position as the leaf moistening cylinder rotates clockwise; a combination of 12 I-type rake nails is used in the middle section of the hot air moisturizing machine; and 1 I-type rake nail is used in the exit section of the hot air moisturizing machine, so that the tobacco leaves can fall at the 11 o'clock position for easy discharge.

5. The method for processing a rake nail array of multiple specifications of tobacco leaves in the leaf threshing, redrying and moistening process according to claim 4, characterized in that: For the one-knife two-section tobacco leaves, at the entrance section of the hot air moistening machine, the length of each group of L-shaped rake nails is 200mm, and the length of each group of I-shaped rake nails is 200mm; in the middle section of the hot air moistening machine, the length of each group of I-shaped rake nails is 200mm; at the exit section of the hot air moistening machine, the length of the L-shaped rake nails is 200mm, and the length of the I-shaped rake nails is 300mm; For two-knife three-section tobacco leaves, at the entrance section of the hot air moistening machine, the length of the L-type rake nail is 300mm, and the length of the I-type rake nail is 200mm; in the middle section of the hot air moistening machine, the length of each group of I-type rake nails is 200mm; at the exit section of the hot air moistening machine, the length of the L-type rake nail is 300mm, and the length of the I-type rake nail is 200mm; For the whole leaf tobacco material, at the entrance section of the hot air moistening machine, the length of the L-type rake nail is 200mm, and the length of the I-type rake nail is 200mm; in the middle section of the hot air moistening machine, the length of each group of I-type rake nails is 200mm; at the exit section of the hot air moistening machine, the length of the L-type rake nail is 200mm, and the length of the I-type rake nail is 200mm; For modular tobacco leaf materials, at the entrance section of the hot air moisturizing machine, the length of the I-type rake nails is 300mm; in the middle section of the hot air moisturizing machine, the length of each group of I-type rake nails is 200mm; at the exit section of the hot air moisturizing machine, the length of the I-type rake nails is 300mm.

6. The method for processing a rake nail array of multiple specifications of tobacco leaves in the leaf threshing, redrying and moistening process according to claim 1, characterized in that: The rake nails at the inlet section of the hot air leaf moistening machine, the middle section of the hot air leaf moistening machine and the outlet section of the hot air leaf moistening machine all adopt a quick-release fixing structure.

7. The method for processing a rake nail array of multiple specifications of tobacco leaves in the leaf threshing, redrying and moistening process according to claim 6, characterized in that: The rake nails at the inlet section, the middle section and the outlet section of the hot air leaf moisturizer are installed on the quick-release base through threaded connection and locking mechanism; the quick-release base is welded on the inner wall of the leaf moisturizing cylinder.

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