Free tobacco leaf sorting system and threshing production system

Abstract

The utility model provides a free tobacco leaf sorting system and a threshing production system, and belongs to the technical field of tobacco leaf threshing, and the free tobacco leaf sorting system is characterized in that a mixed material is conveyed into a first blanking device through gas, gas-material separation is performed by the first blanking device, and the mixed material separated from the gas is discharged from a first output end of the first blanking device; then entering the input end of the winnowing device; heavy materials and free tobacco leaves in the mixed materials are separated through the winnowing device, the free tobacco leaves separated from the heavy materials are discharged from the first output end of the winnowing device, the free tobacco leaves are conveyed into the second blanking device through gas, gas-material separation is conducted through the second blanking device, the free tobacco leaves are separated from the gas, and then the free tobacco leaves are separated out; therefore, the free tobacco leaves do not need to participate in the subsequent threshing process along with the heavy materials, unnecessary threshing and crushing of the free tobacco leaves are avoided, the proportion of large and medium tobacco leaves in the threshing line is increased, the tobacco leaf structure after threshing is improved, waste is reduced, and the tobacco leaf yield of the whole line is increased.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tobacco threshing, and particularly relates to a free tobacco leaf sorting system and a tobacco threshing production system. BACKGROUND

[0002] At present, the tobacco industry generally adopts heavy wind separation technology to separate heavy materials in tobacco leaves, such as a heavy wind separator arranged online. The heavy materials separated by these wind separators mostly contain a small amount of qualified free tobacco leaves. In the original process route, the qualified free tobacco leaves will enter the second tobacco threshing process with the heavy materials, resulting in secondary tobacco threshing of qualified tobacco leaves, increasing tobacco crushing, and affecting the tobacco sheet rate. CONTENT OF THE UTILITY MODEL

[0003] The present utility model aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, the first aspect of the present utility model provides a free tobacco leaf sorting system.

[0005] The second aspect of the present utility model provides a tobacco threshing production system.

[0006] Therefore, according to the first aspect of the present application, a free tobacco leaf sorting system is provided, which comprises:

[0007] A first material drop device, which receives mixed materials conveyed by gas, separates the mixed materials, and discharges the mixed materials from a first output end of the first material drop device;

[0008] An air separation device, an input end of which is in communication with the first output end of the first material drop device, which receives the mixed materials, separates free tobacco leaves, and discharges the free tobacco leaves from a first output end of the air separation device;

[0009] A second material drop device, an input end of which is in communication with the first output end of the air separation device, which receives the free tobacco leaves conveyed by gas, and separates the free tobacco leaves.

[0010] In a feasible implementation, the free tobacco leaf sorting system further comprises:

[0011] A first air conveying system, which is in communication with the first material drop device, and which conveys the mixed materials into the first material drop device.

[0012] In a feasible implementation, the free tobacco leaf sorting system further comprises:

[0013] A wind separator, which separates the mixed materials, discharges the mixed materials from an output end of the wind separator, and conveys the mixed materials into the first air conveying system;

[0014] The output end of the air distributor is arranged vertically downward.

[0015] In an embodiment, the first air conveying system comprises:

[0016] The first air conveying device;

[0017] The first conveying pipeline, which is in communication with the first air conveying device and the first material distributor, is in communication with the output end of the air distributor, and the first conveying pipeline conveys the mixed material discharged from the output end of the air distributor.

[0018] In an embodiment, the free tobacco leaf sorting system further comprises:

[0019] The second air conveying system, which is in communication with the second material distributor, conveys the free tobacco leaf into the second material distributor.

[0020] In an embodiment, the second air conveying system comprises:

[0021] The second air conveying device;

[0022] The second conveying pipeline, which is in communication with the second material distributor, the air sorting device and the second air conveying device, is in communication with the first output end of the air sorting device, and the second conveying pipeline conveys the free tobacco leaf discharged from the first output end of the air sorting device.

[0023] In an embodiment, the second output end of the air sorting device discharges heavy material, and the heavy material enters a next-stage threshing system.

[0024] In an embodiment, the next-stage threshing system is a second-stage threshing system in a threshing production system.

[0025] In an embodiment, the free tobacco leaf sorting system further comprises:

[0026] The collecting belt, which is arranged below the first output end of the second material distributor, receives the free tobacco leaf discharged from the first output end of the second material distributor.

[0027] The first output end of the second material distributor is arranged vertically downward.

[0028] According to a second aspect of the embodiments of the present application, a threshing production system is provided, which comprises the free tobacco leaf sorting system according to any of the above technical solutions.

[0029] Compared with the prior art, the free tobacco leaf sorting system and the threshing production system have the following beneficial effects:

[0030] The free tobacco leaf sorting system provided in this application includes a first feeder, an air separator, and a second feeder. The mixture is a mixture of heavy materials and free tobacco leaves. The mixture is conveyed to the first feeder by gas, where gas-material separation is performed. The mixture after separation from the gas is discharged from the first output end of the first feeder and then enters the input end of the air separator. The air separator separates the heavy materials and free tobacco leaves from the mixture. The free tobacco leaves after separation from the heavy materials are discharged from the first output end of the air separator. The free tobacco leaves are conveyed to the second feeder by gas, where gas-material separation is performed, separating the free tobacco leaves from the gas. This means that the free tobacco leaves do not need to participate in the subsequent threshing process with the heavy materials, avoiding unnecessary threshing and breakage of the free tobacco leaves. This increases the proportion of large and medium-sized tobacco leaves in the threshing line, improves the structure of the tobacco leaves after threshing, reduces waste, and helps to improve the overall yield of the line. Attached Figure Description

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0032] Figure 1 A schematic structural diagram of a free tobacco leaf sorting system according to an embodiment of this application;

[0033] in, Figure 1 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0034] 1. First feeder; 2. Air separator; 3. Second feeder; 4. First pneumatic conveying system; 5. Air divider; 6. Second pneumatic conveying system; 7. Converging belt;

[0035] 41. First pneumatic conveying device; 42. First conveying pipeline;

[0036] 61. Second air conveying device; 62. Second conveying pipeline. Detailed Implementation

[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0041] like Figure 1 As shown, according to a first aspect of the embodiments of this application, a free tobacco leaf sorting system is proposed, comprising: a first feeder 1, an air separator 2, and a second feeder 3; the first feeder 1 receives a gas-conveyed mixture, separates the mixture, and discharges the mixture from a first output end of the first feeder 1; the input end of the air separator 2 is connected to the first output end of the first feeder 1, the air separator 2 receives the mixture, separates the free tobacco leaves, and discharges the free tobacco leaves from the first output end of the air separator 2; the input end of the second feeder 3 is connected to the first output end of the air separator 2, the second feeder 3 receives the gas-conveyed free tobacco leaves, and separates the free tobacco leaves.

[0042] The free tobacco leaf sorting system provided in this application includes a first feeder 1, an air separator 2, and a second feeder 3. The mixture is a mixture of heavy materials and free tobacco leaves. The mixture is conveyed to the first feeder 1 by gas, where it undergoes gas-material separation. The mixture after separation from the gas is discharged from the first output end of the first feeder 1 and then enters the input end of the air separator 2. The air separator 2 separates the heavy materials and free tobacco leaves from the mixture. The free tobacco leaves after separation from the heavy materials are discharged from the first output end of the air separator 2 and conveyed to the second feeder 3 by gas, where it undergoes gas-material separation, separating the free tobacco leaves from the gas. This prevents the free tobacco leaves from participating in the subsequent threshing process along with the heavy materials, avoiding unnecessary threshing and breakage of the free tobacco leaves. This increases the proportion of large and medium-sized tobacco leaves in the threshing line, improves the structure of the tobacco leaves after threshing, reduces waste, and helps improve the overall yield of the line.

[0043] It should be noted that free tobacco leaves are qualified tobacco leaves that have not been separated from the heavy materials. The mixture includes heavy materials and free qualified tobacco leaves. The heavy materials need to enter the post-threshing process, while the qualified tobacco leaves do not need to enter the post-threshing process. By separating the free qualified tobacco leaves from the mixture, the qualified tobacco leaves no longer participate in the threshing process of the heavy materials, thereby improving the tobacco leaf yield and reducing waste.

[0044] Furthermore, the separated qualified tobacco leaves are combined with the mainstream tobacco leaves and then processed uniformly in the curing process. There is no need to process the separated qualified tobacco leaves separately, which reduces the difficulty of modifying the original production process system.

[0045] Understandably, the tobacco leaf feeder is a common piece of equipment in the tobacco leaf threshing production system. The feeder drives a gas-solid two-phase flow through a negative pressure system. By utilizing the combined effect of centrifugal force and gravity of the rotating screen drum, whole tobacco leaves are dynamically discharged through the cross-shaped sweeping mechanism, while broken pieces are removed through the mesh screen. This achieves both gas-material separation and separation of tobacco leaves and broken pieces.

[0046] Understandably, the air separator 2 separates materials based on differences in their suspension velocities. In the airflow field, lightweight free tobacco leaves, due to high air resistance and low density (suspension velocity < airflow velocity), are lifted and transported by the airflow and discharged from the first output end of the air separator 2; while heavy materials (stones, metals, etc.), due to high density and high settling velocity, fall directly under gravity and are discharged from the second output end of the air separator 2, thus achieving the separation of free tobacco leaves from heavy materials. Furthermore, the separation effect can be adjusted through vibrating screening using a rotating roller mechanism and dynamic airflow control (such as a variable diameter duct design).

[0047] Specifically, the air separation device 2 can be a cyclone separator, a vertical airflow separator, or a dynamic air separator.

[0048] like Figure 1 As shown, in one feasible embodiment, the free tobacco leaf sorting system further includes: a first pneumatic conveying system 4, which is connected to a first feeder 1, and the first pneumatic conveying system 4 conveys the mixed material to the first feeder 1.

[0049] In this technical solution, the first pneumatic conveying system 4 is connected to the first feeder 1. The first pneumatic conveying system 4 uses flowing gas to carry the mixed material and delivers the gas and the mixed material together to the first feeder 1. The first feeder 1 separates the gas and the mixed material. By conveying the material through gas, the difficulty of material transfer is reduced, which helps to improve the separation efficiency of free qualified tobacco leaves.

[0050] like Figure 1 As shown, in one feasible embodiment, the free tobacco leaf sorting system further includes: an air separator 5, which separates the mixed material, and the mixed material is discharged from the output end of the air separator 5 and enters the first air conveying system 4 for conveying; wherein, the output end of the air separator 5 is set vertically downward.

[0051] In this technical solution, the mixed material separated by the air separator 5 falls from the output end of the air separator 5 into the first air conveying system 4 under the action of gravity. The mixed material is carried by the airflow in the first air conveying system 4 to the first feeder 1. Utilizing the weight of the mixed material, after being discharged by the air separator 5, the mixed material automatically falls into the first air conveying system 4. The degree of automation is high and the transfer process is small.

[0052] It should be noted that the air separator 5 is an existing device in the leaf threshing process system, used to separate heavy materials. However, the heavy materials separated by the air separator 5 generally contain a small amount of free qualified tobacco leaves. By adding an air classifier 2 to the heavy material line, the mixed materials are air-classified to separate the small amount of free qualified tobacco leaves from the heavy materials and merge them with the mainstream qualified tobacco leaves, thereby reducing the number of free qualified tobacco leaves in the heavy materials and avoiding the need to thresh the qualified tobacco leaves.

[0053] like Figure 1 As shown, in one feasible embodiment, the first air conveying system 4 includes: a first air conveying device 41 and a first conveying pipe 42, the first conveying pipe 42 connecting the first feeder 1 to the first air conveying device 41; the first conveying pipe 42 is connected to the output end of the air separator 5, and the first conveying pipe 42 conveys the mixed material discharged from the output end of the air separator 5.

[0054] In this technical solution, the mixed material falls directly from the output end of the air separator 5 into the first conveying pipe 42. The first air conveying device 41 provides driving force for the airflow in the first conveying pipe 42. The mixed material moves with the airflow in the first conveying pipe 42 so as to use the first air conveying system 4 to transport the mixed material from the air separator 5 to the first discharge device 1. The air and material are separated by the first discharge device 1 to separate the mixed material.

[0055] Specifically, such as Figure 1 The arrow markings on the first delivery pipe 42 indicate the direction of airflow in the first air delivery system 4.

[0056] like Figure 1 As shown, in one feasible embodiment, the free tobacco leaf sorting system further includes: a second pneumatic conveying system 6, which is connected to a second feeder 3, and the second pneumatic conveying system 6 conveys the free tobacco leaves into the second feeder 3.

[0057] In this technical solution, the second pneumatic conveying system 6 is connected to the second feeder 3. The air separation device 2 separates the free tobacco leaves from the heavy materials in the mixture. The second pneumatic conveying system 6 uses flowing gas to carry the free tobacco leaves separated by the air separation device 2 and transports the gas and free tobacco leaves together to the second feeder 3. The second feeder 3 separates the gas from the free tobacco leaves and transports the qualified free tobacco leaves by gas, which reduces the difficulty of transporting the free tobacco leaves and improves the transportation efficiency of the free tobacco leaves. This is conducive to improving the overall working efficiency of the free tobacco leaf sorting system and also helps to accelerate the convergence of free tobacco leaves with the mainstream qualified tobacco leaves, thereby improving the overall working efficiency of the tobacco leaf threshing production system.

[0058] like Figure 1 As shown, in one feasible embodiment, the second air conveying system 6 includes: a second air conveying device 61 and a second conveying pipe 62, the second conveying pipe 62 connecting the second feeder 3, the air classifier 2 and the second air conveying device 61; the second conveying pipe 62 is connected to the first output end of the air classifier 2, and the second conveying pipe 62 conveys free tobacco leaves discharged from the first output end of the air classifier 2.

[0059] In this technical solution, free tobacco leaves are conveyed to the second feeder 3 via the second conveying pipe 62. The second air conveying device 61 provides driving force for the airflow in the second conveying pipe 62. The free tobacco leaves move with the airflow in the second conveying pipe 62, so that the mixed material is transported from the air separation device 2 to the second feeder 3 by the second air conveying system 6. The second feeder 3 performs air-material separation to separate the free qualified tobacco leaves.

[0060] Specifically, such as Figure 1 The arrow markings on the second delivery pipe 62 indicate the direction of airflow in the second air delivery system 6.

[0061] like Figure 1 As shown, in one feasible implementation, the second output end of the air classifier 2 discharges heavy material, which then enters the next stage leaf-beating system.

[0062] In this technical solution, after the air classifier 2 separates the mixed materials, the free qualified tobacco leaves enter the second feeder 3, and the heavy materials enter the next stage of leaf threshing. This avoids the free tobacco leaves from entering the next stage of leaf threshing system and causing breakage, improves the leaf structure after threshing, reduces waste, increases the tobacco leaf yield, and at the same time reduces the load on the next stage of leaf threshing system, ensuring the normal operation of the next stage of leaf threshing system.

[0063] like Figure 1 As shown, in one feasible implementation, the next-level leaf-cutting system is a secondary leaf-cutting system in the leaf-cutting production system.

[0064] In this technical solution, the heavy material separated by the air separator 5 will contain a small amount of free qualified tobacco leaves. By separating the free tobacco leaves before the heavy material enters the secondary threshing system, the quality of the tobacco leaves can be controlled at the source, while reducing the load on the subsequent threshing system. This is beneficial to improving the yield of tobacco leaves and the proportion of large and medium-sized tobacco leaves in the threshing line.

[0065] like Figure 1 As shown, in one feasible implementation, the free tobacco leaf sorting system further includes: a collection belt 7, which is disposed below the first output end of the second feeder 3, and the collection belt 7 collects the free tobacco leaves discharged from the first output end of the second feeder 3; wherein, the first output end of the second feeder 3 is arranged vertically downward.

[0066] In this technical solution, after the free tobacco leaves are separated by the second feeder 3, they fall directly onto the collection belt 7 below under their own gravity. The separated free tobacco leaves are conveyed by the collection belt 7, so that the free tobacco leaves are combined with the mainstream tobacco leaves that have not been mixed with heavy materials and then enter the re-drying process together. The free tobacco leaves and the mainstream tobacco leaves enter the subsequent processing together, which saves time and is highly efficient.

[0067] According to a second aspect of this application, a tobacco leaf production system is proposed, comprising: a free tobacco leaf sorting system as described in any of the above technical solutions.

[0068] The leaf-threshing production system provided in this application includes a free tobacco leaf sorting system as described in any of the above technical solutions. Therefore, the leaf-threshing production system has all the beneficial effects of the free tobacco leaf sorting system described in the above technical solutions, which will not be elaborated here.

[0069] Specifically, the leaf-threshing production system may include a tobacco leaf-threshing production system.

[0070] It will be readily understood by those skilled in the art that the above embodiments can be freely combined and superimposed without conflict.

[0071] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A free tobacco leaf sorting system characterized by, The free tobacco leaf sorting system comprises: a first faller which receives the mixed material delivered by the gas, separates the mixed material, and discharges the mixed material from a first output end of the first faller; an air separation device which is connected to the first output end of the first faller, receives the mixed material, and separates the free tobacco leaf, and discharges the free tobacco leaf from a first output end of the air separation device; a second faller which is connected to the first output end of the air separation device, receives the free tobacco leaf delivered by the gas, and separates the free tobacco leaf.

2. A free tobacco leaf sorting system according to claim 1, wherein, The free tobacco leaf sorting system further comprises: a first air delivery system which is connected to the first faller, and delivers the mixed material to the first faller.

3. A free tobacco leaf sorting system according to claim 2, wherein, The free tobacco leaf sorting system further comprises: an air separator which separates the mixed material, and discharges the mixed material from an output end of the air separator into the first air delivery system for delivery; wherein the output end of the air separator is vertically downwardly arranged.

4. The free tobacco leaf sorting system according to claim 3, wherein the first air delivery system comprises: a first air delivery device; a first delivery pipeline which connects the first faller and the first air delivery device; the first delivery pipeline is connected to the output end of the air separator, and delivers the mixed material discharged from the output end of the air separator.

5. A free tobacco leaf sorting system according to claim 1, wherein, The free tobacco leaf sorting system further comprises: a second air delivery system which is connected to the second faller, and delivers the free tobacco leaf to the second faller.

6. The free tobacco leaf sorting system according to claim 5, wherein the second air delivery system comprises: a second air delivery device; a second delivery pipeline which connects the second faller, the air separation device, and the second air delivery device; the second delivery pipeline is connected to the first output end of the air separation device, and delivers the free tobacco leaf discharged from the first output end of the air separation device.

7. The free tobacco leaf sorting system according to claim 1, wherein the second output end of the air separation device discharges heavy material, and the heavy material enters a next stage threshing system.

8. The free tobacco leaf sorting system according to claim 7, wherein the next stage threshing system is a second stage threshing system in a threshing production system.

9. A free tobacco leaf sorting system according to any one of claims 1 to 8, wherein, The free tobacco leaf sorting system further comprises: a collection belt which is arranged below the first output end of the second faller, and receives the free tobacco leaf discharged from the first output end of the second faller; wherein the first output end of the second faller is vertically downwardly arranged.

10. A threshing production system, characterized in that The free tobacco leaf sorting system comprises the free tobacco leaf sorting system according to any one of claims 1 to 9.

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