Process system for recovering tobacco shreds from defective waste cigarettes

Abstract

The utility model relates to a process system for recovering tobacco shreds from defective waste cigarettes. The process system comprises a first vibrating screen; the second vibrating screen is connected with the first vibrating screen; the cigarettes treated by the first pre-crushing devices are directly conveyed to the first vibrating screen; the first vibrating screen and the second vibrating screen are each provided with a first screen plate, a wave-shaped curved surface is formed on the top of each first screen plate and is in a continuous wave shape in the advancing direction of the cigarettes, and all wave crests and wave troughs are in a continuous S-shaped trend in the horizontal plane. Under the action of a wave-shaped curved surface on the first sieve plate, the top surface area of the first sieve plate is greatly increased, the design of reducing the projection area of the first sieve plate in the vertical direction is facilitated, the design of reducing the sizes of the first vibration sieve and the second vibration sieve is facilitated, the occupied space is reduced, and multiple first pre-crushing devices are adapted; therefore, the single processing line can be used for recovering and processing various different types of defective cigarettes, and the adaptability of the equipment is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of tobacco shred recovery, and in particular to a process system for recovering tobacco shreds from defective waste cigarettes. Background Art

[0002] In the process of producing cigarettes, cigarette factories will produce a large number of defective and waste cigarettes. In order to avoid waste, cigarette factories usually recycle the defective and waste cigarettes to recycle the tobacco in the defective and waste cigarettes. There are certain technical difficulties in separating and recovering the tobacco from the cigarettes. At present, the equipment for recycling defective and waste cigarettes usually includes pre-crushing equipment and vibrating screen. The pre-crushing equipment first destroys the defective and waste cigarettes so that the cigarettes are crushed to a certain extent, and then the crushed cigarettes are transported to the vibrating screen through a conveying device such as a belt. The vibration of the vibrating screen separates the tobacco and cigarette paper from each other. In this way, the pre-crushing The equipment, conveying device and vibrating screen form a complete defective waste cigarette recycling and processing line. The current technical difficulties are reflected in the link of vibrating screen for the shredded cigarettes. In order to improve the separation effect between tobacco and cigarette paper, the vibrating screen is usually set very long to increase the vibrating screening length of the shredded cigarettes, which will increase the space occupied in the workshop and affect the layout of the equipment. On the other hand, it is reflected in the adaptability of the processing line. Considering the shredding level of cigarettes and the separation effect between tobacco and cigarette paper, the pre-shredding equipment in each processing line is only suitable for the processing of specific types of cigarettes. If the processing The processing effect of other types of cigarettes will be relatively poor. For example, nowadays, cigarettes are divided into thin and thick cigarettes, and also divided into those with bursting beads and those without bursting beads. If the current processing line is suitable for processing thin cigarettes, then when changing to processing thick cigarettes, the crushing level of thick cigarettes will be too high, causing excessive damage to the cigarette paper and filter tip. After the vibration screening treatment, the content of impurities in the tobacco will be high. If the current processing line is suitable for processing cigarettes without bursting beads, then when changing to processing cigarettes with bursting beads, the current crushing intensity may easily destroy the bursting beads and cause pollution to the tobacco. For example, the more mature circular screening cylinder at this stage is used for processing cigarettes. During the crushing process, if the cigarettes to be crushed are replaced, the aperture of the sieve holes in the circular screening drum and the rotation speed of the circular screening drum must be adjusted to adapt to the crushing of the changed cigarette type. Therefore, the workshop must either set up multiple processing lines, and the pre-crushing devices on each processing line are adapted to process different types of cigarettes. This places higher requirements on the space level of the workshop and increases the cost. Alternatively, when the cigarettes to be processed are replaced, the pre-crushing equipment must be re-debugged and adjusted to adapt to the crushing of the replaced cigarettes. However, the repeated adjustment of the equipment is labor-intensive and the labor intensity of the relevant operators is also high. Utility Model Content

[0003] The purpose of this application is to provide a process system for recovering shredded tobacco from defective waste cigarettes, which can adapt to the processing of different cigarettes and reduce the requirements for workshop space level, thereby effectively solving the shortcomings of the prior art.

[0004] To this end, in a first aspect, an embodiment of the present application provides a process system for recovering shredded tobacco from defective waste cigarettes, comprising:

[0005] A first vibrating screen has a feed end and a discharge end;

[0006] A second vibrating screen has a feed end and a discharge end, wherein the feed end of the second vibrating screen is connected to the discharge end of the first vibrating screen;

[0007] The first pre-crushing device is provided with a plurality of devices for crushing cigarettes, and has a feeding end and a discharging end, and is arranged at the feeding end of the first vibrating screen, and the discharging end of the first pre-crushing device is directly connected to the feeding end of the first vibrating screen, so that the cigarettes processed by the first pre-crushing device are directly transported to the first vibrating screen;

[0008] Among them, both the first vibrating screen and the second vibrating screen are provided with a first screen plate, the first screen plate is used for conveying and screening cigarettes, a plurality of screen holes are provided on the first screen plate, and a corrugated surface is formed on the top of the first screen plate, the corrugated surface is in a continuous wave shape along the advancing direction of the cigarettes, so that the corrugated surface forms wave crests and wave troughs arranged in sequence, and the direction of each of the wave crests and wave troughs is in a continuous S-shaped direction in the horizontal plane.

[0009] In a possible implementation, the first vibrating screen and / or the second vibrating screen further includes a second sieve plate having a plurality of sieve holes thereon, the second sieve plate being arranged along the first sieve plate and located below the first sieve plate, and the second sieve plate having a discharge end.

[0010] In one possible implementation, a first material blocking plate is provided at the discharge end of the second screen plate, the first material blocking plate protrudes upward from the second screen plate, the first material blocking plate forms a certain angle with the forward direction of the cigarettes in the horizontal plane, and a first discharge hopper is provided at one end of the first material blocking plate downstream of the forward direction of the cigarettes, so that the material on the second screen plate can be discharged from the first discharge hopper.

[0011] In a possible implementation, the first vibrating screen and / or the second vibrating screen further includes a third sieve plate, the third sieve plate is arranged along the second sieve plate and is located below the second sieve plate, and the third sieve plate has a discharge end.

[0012] In one possible implementation, a second material blocking plate is provided at the discharge end of the third screen plate, the second material blocking plate protrudes upward from the third screen plate, the second material blocking plate forms a certain angle with the forward direction of the cigarettes in the horizontal plane, and a second discharge hopper is provided at one end of the second material blocking plate downstream of the forward direction of the cigarettes, so that the material on the third screen plate can be discharged from the second discharge hopper.

[0013] In a possible implementation, a wind selection device is provided between the first sieve plate of the first vibrating screen and the first sieve plate of the second vibrating screen, the wind selection device having a feed end and a discharge end, the feed end of the wind selection device is connected to the discharge end of the first sieve plate of the first vibrating screen, and the discharge end of the wind selection device is connected to the feed end of the first sieve plate of the second vibrating screen.

[0014] In a possible implementation, a second pre-crushing device is provided between the air separation device and the first screen plate of the second vibrating screen, for crushing the material delivered by the air separation device.

[0015] In a possible implementation, three first pre-crushing devices are provided, and the three first pre-crushing devices are one or more combinations of a screw conveyor, a knife-type slitting device, and a roller-type breaking device.

[0016] In a possible implementation, the second pre-crushing device is a roller breaking device.

[0017] In a second aspect, the present application provides a method for recovering shredded tobacco from defective waste cigarettes, which is applied to the above-mentioned process system for recovering shredded tobacco from defective waste cigarettes, and comprises the following steps:

[0018] A. Determine the type of defective waste cigarettes to be processed;

[0019] B. According to the type of defective waste cigarettes to be processed determined in step A, the corresponding first pre-crushing device is started. If the defective waste cigarettes to be processed are cigarettes containing bursting beads or cigarettes with good size consistency, the first pre-crushing device started is a cutter-type slitting device. If the defective waste cigarettes to be processed are thick cigarettes without bursting beads or cigarettes with poor size consistency, the first pre-crushing device started is a screw conveyor. If the defective waste cigarettes to be processed are cigarettes without bursting beads, the first pre-crushing device started is a roller-type breaking device; or the cutter-type slitting device, the screw conveyor or the roller-type breaking device are started simultaneously according to specific needs;

[0020] C. Start the first vibrating screen, the second vibrating screen, the air selection device and the second pre-crushing device;

[0021] D. After all the equipment are running smoothly, the defective waste cigarettes to be processed are sent to the first pre-crushing device started in step B. The defective waste cigarettes are crushed by the first pre-crushing device, and the crushed cigarettes are sent to the first sieve plate of the first vibrating screen. Under the action of vibration, the tobacco passes through the sieve holes on the first sieve plate and falls on the second sieve plate of the first vibrating screen. The remaining waste cigarettes, broken cigarette paper and filter rods are transported to the air selection device on the first sieve plate. The broken cigarette paper is removed by the air selection device, and the remaining waste cigarettes and filter rods are sent to the second pre-crushing device for re-crushing. After the re-crushing, the materials are transported to the first sieve plate of the second vibrating screen, and the remaining tobacco falls on the second sieve plate of the second vibrating screen. The remaining filter rods and broken cigarette paper are transported forward and discharged. The tobacco on the second sieve plates of the first vibrating screen and the second vibrating screen are transported forward and discharged, and the tobacco dust passes through the sieve holes on the second sieve plate and falls on the third sieve plate and is discharged in a centralized manner.

[0022] According to the process system for recovering shredded tobacco from defective waste cigarettes provided in the embodiment of the present application, the cigarettes crushed by the first pre-crushing device are directly conveyed to the first vibrating screen for screening, eliminating the need for the arrangement of conveying devices such as belts, which is conducive to saving space. Moreover, under the action of the wavy surface on the first screen plate, the top surface area of ​​the first screen plate is greatly increased, which is conducive to the design of reducing the projection area of ​​the first screen plate in the vertical direction, and is conducive to reducing the size of the first vibrating screen and the second vibrating screen, further reducing the space occupied. Multiple first pre-crushing devices are adapted on the first vibrating screen, so that the single processing line can cope with the recovery and processing of various types of defective cigarettes, greatly improving the adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the process system provided in the embodiment of the present application;

[0024] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0025] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0026] Figure 4 A bottom view of the partial coordination of the first vibrating screen, the air selection device, the second pre-crushing device and the second vibrating screen provided in an embodiment of the present application;

[0027] Figure 5 for Figure 4 A partial enlarged view of point C in the middle;

[0028] Figure 6 A schematic diagram of a partial structure of a first vibrating screen or a second vibrating screen provided in an embodiment of the present application;

[0029] Figure 7 for Figure 6 A schematic diagram of the structure after adding a first material blocking plate, a second material blocking plate, a first discharge hopper and a second discharge hopper;

[0030] Figure 8 for Figure 7 A partial enlarged view of point D in the middle;

[0031] Fig. 9 A schematic plan view of a portion of the top of the first sieve plate provided in an embodiment of the present application. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] like Figure 1-Figure 9As shown, the embodiment of the present application provides a process system for recovering tobacco from defective waste cigarettes, which is used for the processing process of defective cigarettes generated in the production process of cigarette factories, and specifically recovering tobacco from defective waste cigarettes. Due to the increasing number of cigarette types nowadays, such as the distinction between thin and thick cigarettes, and the distinction between cigarettes containing bursting beads and those without bursting beads, the recovery of tobacco has also brought more difficulties. The increase in cigarette types has resulted in different types of defective waste cigarettes. The current tobacco recovery processing line usually includes a pre-shredding device, a conveying device such as a belt, and a vibrating screen. The pre-shredding device is used to shred the waste cigarettes so that the cigarettes are damaged to a certain extent. Due to the limitations of the adaptability of the processing line, cigarette factories usually have to configure multiple tobacco recovery processing lines to cope with various types of waste cigarettes to ensure that a good shredding effect can be achieved when processing each type of cigarette, and to avoid the generation of overly fine shredded paper. The increase in the number of processing lines increases the space occupied by the workshop. At the same time, in order to make the separation of tobacco and cigarette paper more thorough, the vibrating screen is usually set longer. The crushed cigarettes are conveyed to the screen plate of the vibrating screen through a conveyor belt. The screen plate conveys and screens the tobacco by continuous vibration. The top surface area of ​​the screen plate will affect the separation effect between tobacco and cigarette paper to a certain extent. The larger the top surface area of ​​the screen plate, the more conducive it is to the uniform distribution of mixed materials such as tobacco and cigarette paper, the smaller the accumulation thickness of the mixed materials, and the extension of the moving path of the mixed materials, so that the separation between tobacco and cigarette paper is more thorough. Therefore, cigarette makers usually set the vibrating screen longer, which undoubtedly increases the space occupied by the workshop. The process system and method for recovering tobacco from defective waste cigarettes provided in the present application are intended to improve the adaptability of the equipment, adapt to the processing of various types of waste cigarettes, and reduce the space occupied by the workshop.

[0034] Specifically, the process system for recovering tobacco shreds from defective waste cigarettes includes a first vibrating screen 100, a second vibrating screen 200 and a first pre-crushing device 11. The first vibrating screen 100 has a feed end and a discharge end, and the second vibrating screen 200 also has a feed end and a discharge end. The feed end of the second vibrating screen 200 and the discharge end of the first vibrating screen 100 are connected to each other. The first pre-crushing device 11 is arranged at the feed end of the first vibrating screen 100, so that the cigarettes crushed by the first pre-crushing device 11 are transferred to the first vibrating screen 100, and then the materials screened by the first vibrating screen 100 can be transferred to the second vibrating screen 200 for further screening, which is beneficial to improve the separation effect of tobacco shreds.

[0035] In the present embodiment, a plurality of first pre-crushing devices 11 are provided, and each first pre-crushing device 11 can be adapted to the crushing processing of a certain type of cigarettes. The first pre-crushing device 11 is also provided with a feeding end and a discharging end. Each first pre-crushing device 11 is arranged at the feeding end of the first vibrating screen 100, and the discharging end of the first pre-crushing device 11 is directly connected to the feeding end of the first vibrating screen 100, so that the cigarettes processed by the first pre-crushing device 11 can be directly transported to the first vibrating screen 100 for screening processing. Specifically, the direct connection between the discharging end of the first pre-crushing device 11 and the feeding end of the first vibrating screen 100 means that the discharging end of the first pre-crushing device 11 and the feeding end of the first vibrating screen 100 are directly connected, and there is no other intermediate connection structure between the two, so that the cigarettes crushed by the first pre-crushing device 11 are directly transported to the first vibrating screen 100. A vibrating screen 100 is used for screening, or the discharge end of the first pre-crushing device 11 is located above the feed end of the first vibrating screen 100, so that the cigarettes crushed by the first pre-crushing device 11 can directly fall onto the first vibrating screen 100. In this way, conveying devices such as belts are omitted, the overall structure is more compact, and the space occupied is smaller, which is conducive to the layout of the workshop space. Moreover, a plurality of first pre-crushing devices 11 are equipped on a first vibrating screen 100, and each first pre-crushing device 11 has a corresponding type of cigarettes that can be processed, which greatly improves the adaptability of waste cigarette processing. Moreover, compared with multiple processing lines in the past, the process system as a whole is still in the form of one processing line, and only the number of first pre-crushing devices 11 is increased. Compared with the past, while improving adaptability, it also reduces the occupation of workshop space.

[0036] More specifically, the first vibrating screen 100 and the second vibrating screen 200 are both provided with a first sieve plate 101, and the cigarettes crushed by the first pre-crushing device 11 are transported to the first sieve plate 101 of the first vibrating screen 100 for screening. After the first sieve plate 101 of the first vibrating screen 100 completes the processing, the mixed material is transported to the first sieve plate 101 of the second vibrating screen 200 for further screening to improve the separation effect of the tobacco shreds. It should be noted that although the number of the first vibrating screen 100 and the second vibrating screen 200 has increased, compared with the past, it is more reflected in the independent structure of the first vibrating screen 100 and the second vibrating screen 200. If the total length of the first vibrating screen 100 and the second vibrating screen 200 is not longer than the length of the previous single vibrating screen without changing the width of the previous vibrating screen, it can prevent the increase in space occupation. The independent structure is more conducive to layout in the workshop and more convenient to install.

[0037] In this embodiment, the first screen plate 101 of the first vibrating screen 100 and the first screen plate 101 of the second vibrating screen 200 are used to screen and convey the crushed cigarettes forward. The first screen plate 101 is provided with a plurality of screen holes. For the sake of clarity, the cigarettes processed by the first pre-crushing device 11 are referred to as mixed materials in the subsequent description. The mixed materials contain residual waste cigarettes that have not been crushed, crushed tobacco segments, tobacco, shredded cigarette paper and fine cigarette dust. When the first vibrating screen 100 and the second vibrating screen 200 vibrate, the mixed materials can be conveyed forward and screened on the first screen plate 101. During the vibration process, the tobacco in the mixed materials can pass downward through the screen holes on the first screen plate 101, and the crushed tobacco segments can be separated under the action of vibration. The first screen plate 101 is provided with a wave-shaped surface 1013 on the top of the first screen plate 101, and the wave-shaped surface 1013 is arranged in a continuous wave shape along the advancing direction of the cigarette. Specifically, the first screen plate 101 has a width and a length, and the length is greater than the width. The length direction of the first screen plate 101 is the advancing direction of the cigarette. The top of the first screen plate 101 is in a continuous undulating wave shape along the length direction, so that the wave-shaped surface 1013 forms wave crests and wave troughs arranged in sequence along the length direction. Specifically, the height of each wave crest is the same, and the depth of each wave trough is also the same, that is, on the vertical surface parallel to the length direction of the first screen plate 101. The cross-sectional shape of the wavy surface 1013 conforms to the graph of the sine or cosine function. Therefore, along the length direction of the first sieve plate 101, the effective length of the top of the first sieve plate 101 is significantly longer than the length of the first sieve plate 101, thereby effectively increasing the path length of the mixed material being transported and moved on the first sieve plate 101, improving the screening effect of the mixed material, and significantly improving the effective area of ​​the top of the first sieve plate 101, which is more conducive to the uniform distribution of the mixed material, reducing the accumulation thickness of the mixed material, and also conducive to improving the material screening effect. More specifically, the above-mentioned various crests and troughs are arranged along the width direction of the first sieve plate 101. In order to further increase the effective area of ​​the top of the first sieve plate 101, each crest and trough is The directions of the peaks and the troughs are continuous S-shaped in the horizontal plane, or the directions of the peaks and the troughs in the horizontal plane also conform to the sine or cosine function, the highest points of the peaks continuously form the first track 31, the lowest points of the troughs continuously form the second track 32, the directions of the first tracks 31 are arranged in parallel, the directions of the second tracks 32 are arranged in parallel, and the directions of the first track 31 and the second track 32 are also arranged in parallel, or the graph of a sine or cosine function along the width direction of the first sieve plate 101 is arranged in a single row and equidistantly in the length direction of the first sieve plate 101, so that the effective area of ​​the top of the first sieve plate 101 is further increased.It is more conducive to the uniform distribution of the mixed materials and improves the screening effect of the mixed materials.

[0038] More specifically, the axial direction of the sieve holes on the first sieve plate 101 is in the vertical direction, that is, perpendicular to the plane where the first sieve plate 101 as a whole is located. Regarding the arrangement of the sieve holes on the first sieve plate 101, on the one hand, the sieve holes are arranged along the directions of the first track 31 and the second track 32, and a row is also arranged in parallel between the adjacent first track 31 and the second track 32, and the sieve holes are arranged in rows along the length direction of the first sieve plate 101, and the direction of the row is parallel to the length direction of the first sieve plate 101. Moreover, for the sine or cosine function that conforms to the first track 31 and the second track 32, sieve holes are arranged at the peaks and troughs of the function graph, so that when the mixed material is transported on the first sieve plate 101, it is more conducive to the sieve holes to capture the tobacco, thereby improving the screening effect of the tobacco, such as Fig. 9 , which is a schematic diagram of a partial structure of the first sieve plate 101 , and the left-right direction is the length direction of the first sieve plate 101 .

[0039] Specifically, the first vibrating screen 100 and / or the second vibrating screen 200 also include a second sieve plate 102. Preferably, the first vibrating screen 100 and the second vibrating screen 200 both include the second sieve plate 102. The second sieve plate 102 and the first sieve plate 101 are arranged in parallel, and the second sieve plate 102 is below the first sieve plate 101. The second sieve plate 102 is provided with a plurality of sieve holes. The second sieve plate 102 is a flat plate. The sieve holes on the second sieve plate 102 are arranged in an array. The sieve holes on the second sieve plate 102 are equidistantly arranged along the length and width directions of the second sieve plate 102. The tobacco in the mixed material on the first sieve plate 101 passes through the sieve holes of the first sieve plate 101 and falls onto the second sieve plate 102. A discharge end is provided on the second sieve plate 102, and the tobacco can be discharged centrally through the discharge end of the second sieve plate 102, so as to facilitate the recovery of the tobacco.

[0040] In this embodiment, a first material blocking plate 1021 is provided at the discharge end of the second screen plate 102, and the first material blocking plate 1021 protrudes upward from the second screen plate 102, and the first material blocking plate 1021 forms a certain angle with the advancing direction of the cigarette in the horizontal plane, that is, the direction of the first material blocking plate 1021 is not the width direction of the second screen plate 102 but is inclined at a certain angle. Therefore, when the second screen plate 102 conveys tobacco, the tobacco is accumulated toward one end of the first material blocking plate 1021 under the inclined blocking action of the first material blocking plate 1021. For the two ends of the first material blocking plate 1021, along the advancing direction of the tobacco, the end where the tobacco is accumulated is the downstream end corresponding to the advancing direction of the cigarette, and a first discharge hopper 1022 is provided at this end of the first material blocking plate 1021 to facilitate the discharge of tobacco on the second screen plate 102.

[0041] More specifically, the first vibrating screen 100 and / or the second vibrating screen 200 also include a third sieve plate 103. Preferably, the first vibrating screen 100 and the second vibrating screen 200 both include the third sieve plate 103. The third sieve plate 103 and the second sieve plate 102 are arranged in parallel. At this point, the third sieve plate 103 is arranged as a whole along the second sieve plate 102, and the second sieve plate 102 is arranged as a whole along the first sieve plate 101. The first sieve plate 101, the second sieve plate 102 and the third sieve plate 103 are arranged in parallel with each other. The third sieve plate 103 is below the second sieve plate 102, and the second sieve plate 102 is below the first sieve plate 101. A discharge end is provided on the third sieve plate 103. The third sieve plate 103 is a flat plate. There are no sieve holes on the third sieve plate 103. The overly fine tobacco powder on the second sieve plate 102 passes through the sieve holes on the second sieve plate 102 and falls on the third sieve plate 103 and is discharged centrally from the discharge end of the third sieve plate 103.

[0042] Specifically, the first vibrating screen 100 and the second vibrating screen 200 have the same general structure, both of which are in the shape of long grooves. Driven by a driving motor or other driving device, the groove structure vibrates so that the first screen plate 101, the second screen plate 102 and the third screen plate 103 can all convey corresponding materials, and the vibration effect can improve the screening effect of the first screen plate 101 and the second screen plate 102 on the corresponding materials. The groove structure is a three-layer structure, the top layer is the first screen plate 101, the middle layer is the second screen plate 102, and the bottom layer is the third screen plate 103. The moving direction is forward, the front end and the top of the groove structure are open structures, and the rest of the parts are enclosed and closed structures. The first blocking plate 1021 is arranged at the front end of the second screen plate 102 and protrudes upward from the second screen plate 102. Under the blocking effect of the first blocking plate 1021, the tobacco on the second screen plate 102 is intercepted and discharged into the first discharge hopper 1022. In this embodiment, a second blocking plate 1031 is also arranged at the front end of the third screen plate 103, and the second blocking plate 1031 protrudes upward from the third screen plate 103. The second material blocking plate 1031 also forms a certain angle with the advancing direction of the mixed material in the horizontal plane. The function of the second material blocking plate 1031 is the same as that of the first material blocking plate 1021. The direction of the second material blocking plate 1031 is not the width direction of the third screen plate 103 but is inclined at a certain angle. In the advancing direction of the mixed material, one end of the two ends of the second material blocking plate 1031 corresponding to the downstream of the advancing direction of the mixed material is provided with a second discharge hopper 1032. Under the interception effect of the second material blocking plate 1031, the smoke dust on the third screen plate 103 is discharged to the second discharge hopper 1032. The mixed material is accumulated at the place where it is discharged through the second discharge hopper 1032. Specifically, along the forward direction of the mixed material, the position of the first material blocking plate 1021 and the position of the second material blocking plate 1031 can be staggered with each other to avoid interference between the first discharge hopper 1022 and the second discharge hopper 1032. The inclination angle of the first material blocking plate 1021 and the inclination angle of the second material blocking plate 1031 can also be different, so that the positions of the first discharge hopper 1022 and the second discharge hopper 1032 are different to prevent interference between the first discharge hopper 1022 and the second discharge hopper 1032.

[0043] More specifically, an air selection device 4 is arranged between the first sieve plate 101 of the first vibrating screen 100 and the first sieve plate 101 of the second vibrating screen 200. The air selection device 4 has a feeding end and a discharging end. The feeding end of the air selection device 4 is connected to the discharging end of the first sieve plate 101 on the first vibrating screen 100, and the discharging end of the air selection device 4 is connected to the feeding end of the first sieve plate 101 on the second vibrating screen 200. Therefore, after the mixed material is sequentially screened by the first sieve plate 101 on the first vibrating screen 100, most of the shredded tobacco falls downward onto the second sieve plate 102 of the first vibrating screen 100. An air suction port may be arranged inside the air selection device 4 so that the shredded tobacco paper in the mixed material is sucked away, and the remaining residual waste that has not been completely shredded is removed. The cigarettes and a small amount of tobacco are conveyed to the first screen plate 101 of the second vibrating screen 200 for further screening. In order to continue to destroy the residual waste cigarettes that have not been completely crushed and avoid wasting tobacco, a second pre-crushing device 22 can be arranged between the air selection device 4 and the first screen plate 101 of the second vibrating screen 200 to crush the residual waste cigarettes that have not been completely crushed again, and then the mixed material is conveyed to the first screen plate 101 of the second vibrating screen 200. Specifically, the second pre-crushing device 22 has a feed end and a discharge end, the feed end of the second pre-crushing device 22 is connected to the discharge end of the air selection device 4, and the discharge end of the second pre-crushing device 22 is connected to the feed end of the first screen plate 101 on the second vibrating screen 200.

[0044] Specifically, the number of the first pre-crushing devices 11 is three, and the three first pre-crushing devices 11 are one or more combinations of a screw conveyor, a cutter-type slitting device and a roller-type breaking device, that is, the three first pre-crushing devices 11 are a screw conveyor, a cutter-type slitting device and a roller-type breaking device, respectively, and the second pre-crushing device 22 is preferably a roller-type breaking device.

[0045] Specifically, the screw conveyor can be a screw conveyor. The spiral blades of the screw conveyor can generate friction, extrusion and other forces on the material while conveying the material. Therefore, when the cigarettes are fed into the screw conveyor, the cigarettes can be crushed. This method is more suitable for crushing cigarettes that do not contain burst beads or have poor size consistency.

[0046] In one example, when the size consistency retention rate of the cigarette is above 65%, the consistency is determined to be good, and when the size consistency retention rate of the cigarette is less than 65%, the consistency is determined to be poor.

[0047] Cutter type slitting device Figure 1 and Figure 2As shown, it includes a first conveying platform 61, which can be a conveying device such as a vibrating screen. A disc-shaped cutter assembly 62 is arranged at one end of the first conveying platform 61. The disc-shaped cutter assembly 62 can be rotated to cut the cigarette under the drive of a driving motor, etc., and the number of cut sections of the cigarette and the cutting position and depth on the cigarette can be determined by adjusting the number and position of the disc-shaped cutter assembly 62. A cigarette conveying channel 63 can be arranged on the first conveying platform 61. The width of the cigarette conveying channel 63 is equivalent to the length of the cigarette, so that a cigarette can just move along the cigarette conveying channel 63 horizontally, and a circular cutter assembly 62 is arranged at the end of each cigarette conveying channel 63. The disc cutter assembly 62 can adjust the cutting position of the cigarette by adjusting the position of the disc cutter assembly 62. When working, the cigarette is conveyed to the disc cutter assembly 62 in the cigarette conveying channel 63 and cut. The conveying can also be done manually. Therefore, the cutter-type cutting device is suitable for cutting cigarettes containing bursting beads or with good size consistency, because by adjusting the position of the disc cutter assembly 62, damage to the bursting beads in the filter can be avoided. Specifically, the disc cutter assembly 62 can be a disc cutter, which can be driven by a connecting structure such as a driving motor and a rotating shaft to enable the disc cutter to rotate and cut the cigarette.

[0048] Roller breaking device Figure 1 and Figure 3As shown, it includes a second conveying platform 71, and the second conveying platform 71 can be a conveying device such as a vibrating screen. A fence assembly 72 is arranged at one end of the second conveying platform 71. The fence assembly 72 includes a plurality of fence rods arranged in parallel and extending downward, and there is a gap between adjacent fence rods. The end of the second conveying platform 71 is adjacent to the fence assembly 72 and is also provided with a rotating assembly 73. The rotating assembly 73 includes a rotating shaft and a plurality of beating rods. The beating rods are radially connected to the rotating shaft, and the length direction of the beating rods is the radial direction of the rotating shaft. Driven by a driving motor, etc., the rotating shaft drives the beating rods to rotate. When the beating rods are driven to rotate, they can periodically and repeatedly pass through the gap between two adjacent fence rods. In this way, the cigarettes can be broken and destroyed. The beating rods and the fence rods cooperate to destroy the cigarettes in a scissors-like action. The cigarettes are broken at the movable fence rod of the second conveying platform 71. The movement of the cigarettes on the second conveying platform 71 can also be done manually. In this way, The gap between two adjacent fence rods will be periodically crossed by the hitting rod. By adjusting the gap between the fence rods and the diameter of the hitting rod and the diameter of the fence rod, multiple damage points can be generated on a cigarette in the length direction of the cigarette. Since the tobacco segments are easier to be broken and damaged than the filters, the toughness and strength difference between the tobacco segments and the filters in thin cigarettes is more obvious. Therefore, this method is suitable for crushing thin cigarettes without bursting beads. Since the bursting beads of bursting bead cigarettes are mostly arranged in the filters, the strength and toughness of the filters are obviously higher than those of the tobacco segments, and the bursting beads are not easily destroyed in the filters. Therefore, thin cigarettes containing bursting beads can also be suitable for crushing by the roller-type breaking device. Similarly, thanks to the fact that the toughness and strength of the tobacco segments of the cigarettes are obviously lower than those of the filters, the roller-type breaking device can also be suitable for crushing thick cigarettes with or without bursting beads. Therefore, the roller-type breaking device can have a good crushing effect when processing various types of cigarettes.

[0049] Preferably, compared with the method in which the first pre-crushing device 11 is three different devices, the first pre-crushing device 11 can also be a plurality of existing mature pre-crushing devices, and the plurality of pre-crushing devices are adjusted to different states respectively, so as to be able to adapt to different types of cigarette crushing processing.

[0050] The embodiment of the present application also provides a method for recovering shredded tobacco from defective waste cigarettes. The method is applied to the above-mentioned process system for recovering shredded tobacco from defective waste cigarettes. Specifically, the method includes the following steps:

[0051] A. Determine the type of defective waste cigarettes to be processed;

[0052] B. According to the type of defective waste cigarettes to be processed determined in step A, the corresponding first pre-crushing device 11 is activated. If the defective waste cigarettes to be processed are cigarettes containing bursting beads, the activated first pre-crushing device 11 is a cutter-type slitting device. If the defective waste cigarettes to be processed are thick cigarettes without bursting beads, the activated first pre-crushing device 11 is a screw conveyor. If the defective waste cigarettes to be processed are thin cigarettes without bursting beads, the activated first pre-crushing device 11 is a roller-type breaking device.

[0053] C. Start the first vibrating screen 100, the second vibrating screen 200, the air selection device 4 and the second pre-crushing device 22;

[0054] D. After all the equipment are running smoothly, the defective waste cigarettes to be processed are sent to the first pre-crushing device 11 started in step B. The defective waste cigarettes are crushed by the first pre-crushing device 11. The crushed cigarettes are sent to the first screen plate 101 of the first vibrating screen 100. Under the action of vibration, the tobacco passes through the screen holes on the first screen plate 101 and falls on the second screen plate 102 of the first vibrating screen 100. The remaining waste cigarettes, broken cigarette papers and filter rods on the first screen plate 101 are sent to the air separation device 4. The broken cigarette papers are air separated. The waste cigarettes and filter rods are removed by the device 4, and the remaining waste cigarettes and filter rods are sent to the second pre-crushing device 22 for re-crushing. The materials after the re-crushing are transported to the first screen plate 101 of the second vibrating screen 200, and the residual tobacco falls on the second screen plate 102 of the second vibrating screen 200. The remaining filter rods and shredded cigarette papers are transported forward and discharged. The tobacco on the second screen plate 102 of the first vibrating screen 100 and the second vibrating screen 200 are transported forward and discharged. The tobacco dust passes through the sieve holes on the second screen plate 102 and falls on the third screen plate 103 and is discharged in a centralized manner.

[0055] Specifically, in step B, multiple first pre-crushing devices 11 can also be set as multiple existing mature pre-crushing devices, for example, multiple circular screening cylinders, and the diameter of the sieve holes, the rotation speed and other indicators of the multiple circular screening cylinders are adjusted respectively, so that each circular screening cylinder can adapt to the crushing processing of the corresponding type of cigarettes, and each circular screening cylinder is labeled, and the circular screening cylinder with the corresponding label is started according to the type of cigarettes to be processed determined in step A.

[0056] Specifically, due to the effect of the air selection device 4 sucking the shredded cigarette paper, the amount of shredded cigarette paper on the first screen 101 of the first vibrating screen 100 is large. In order to prevent the shredded cigarette paper from falling down onto the second screen plate of the first vibrating screen 100, the sieve hole diameter of the first screen plate 101 on the first vibrating screen 100 is smaller than the sieve hole diameter of the first screen plate 101 on the second vibrating screen 200. The sieve hole diameter of the first screen plate 101 on the first vibrating screen 100 is 5.2 mm, and the sieve hole diameter of the first screen plate 101 on the second vibrating screen 200 is 5.4 mm. The sieve hole diameters of the second screen plate 102 on the first vibrating screen 100 and the second screen plate 102 on the second vibrating screen 200 are selected to be 1.5 mm.

[0057] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0058] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0059] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0060] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A process system for recovering shredded tobacco from defective waste cigarettes, characterized in that: include: A first vibrating screen has a feed end and a discharge end; A second vibrating screen has a feed end and a discharge end, wherein the feed end of the second vibrating screen is connected to the discharge end of the first vibrating screen; The first pre-crushing device is provided with a plurality of devices for crushing cigarettes, and has a feeding end and a discharging end, and is arranged at the feeding end of the first vibrating screen, and the discharging end of the first pre-crushing device is directly connected to the feeding end of the first vibrating screen, so that the cigarettes processed by the first pre-crushing device are directly transported to the first vibrating screen; Among them, both the first vibrating screen and the second vibrating screen are provided with a first screen plate, the first screen plate is used for conveying and screening cigarettes, a plurality of screen holes are provided on the first screen plate, and a corrugated surface is formed on the top of the first screen plate, the corrugated surface is in a continuous wave shape along the advancing direction of the cigarettes, so that the corrugated surface forms wave crests and wave troughs arranged in sequence, and the direction of each of the wave crests and wave troughs is in a continuous S-shaped direction in the horizontal plane.

2. The process system for recovering shredded tobacco from defective waste cigarettes according to claim 1, characterized in that: The first vibrating screen and / or the second vibrating screen further comprises a second sieve plate, on which a plurality of sieve holes are arranged, the second sieve plate is arranged along the first sieve plate and is located below the first sieve plate, and the second sieve plate has a discharge end.

3. The process system for recovering shredded tobacco from defective waste cigarettes according to claim 2, characterized in that: A first material blocking plate is arranged at the discharge end of the second screen plate, and the first material blocking plate protrudes upward from the second screen plate. The first material blocking plate forms a certain angle with the forward direction of the cigarettes in the horizontal plane, and a first discharge hopper is arranged at one end downstream of the first material blocking plate corresponding to the forward direction of the cigarettes, so that the material on the second screen plate can be discharged from the first discharge hopper.

4. The process system for recovering shredded tobacco from defective waste cigarettes according to claim 2, characterized in that: The first vibrating screen and / or the second vibrating screen further comprises a third screen plate, wherein the third screen plate is arranged along the second screen plate and is located below the second screen plate, and the third screen plate has a discharge end.

5. The process system for recovering shredded tobacco from defective waste cigarettes according to claim 4, characterized in that: A second material blocking plate is arranged at the discharge end of the third screen plate, and the second material blocking plate protrudes upward from the third screen plate. The second material blocking plate forms a certain angle with the forward direction of the cigarettes in the horizontal plane, and a second discharge hopper is arranged at one end downstream of the second material blocking plate corresponding to the forward direction of the cigarettes, so that the material on the third screen plate can be discharged from the second discharge hopper.

6. The process system for recovering shredded tobacco from defective waste cigarettes according to claim 1, characterized in that: A wind selection device is arranged between the first sieve plate of the first vibrating screen and the first sieve plate of the second vibrating screen, and the wind selection device has a feed end and a discharge end. The feed end of the wind selection device is connected to the discharge end of the first sieve plate of the first vibrating screen, and the discharge end of the wind selection device is connected to the feed end of the first sieve plate of the second vibrating screen.

7. The process system for recovering shredded tobacco from defective waste cigarettes according to claim 6, characterized in that: A second pre-crushing device is provided between the air selection device and the first screen plate of the second vibrating screen, and is used for crushing the materials sent out by the air selection device.

8. The process system for recovering shredded tobacco from defective waste cigarettes according to claim 1, characterized in that: The number of the first pre-crushing devices is three, and the three first pre-crushing devices are one or more combinations of a screw conveyor, a cutter-type slitting device and a roller-type breaking device.

9. The process system for recovering shredded tobacco from defective waste cigarettes according to claim 7, characterized in that: The second pre-crushing device is a roller breaking device.

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