Material sorting device

Abstract

According to the material sorting device, a conical inner cavity is formed in a cyclone separation chamber in the vertical direction, the cross sectional area of the inner cavity is gradually reduced from top to bottom, and a first feeding port is formed in the side wall of the upper portion of the cyclone separation chamber; materials enter the cyclone separation chamber through the first feeding port in the tangential direction of the inner cavity and can do spiral motion along the inner wall of the inner cavity. The upper end of the cyclone separation chamber is provided with a tobacco shred discharge port, and the lower end of the cyclone separation chamber is provided with a material discharge port; a second feeding port is formed in the upper end of the suspension separation chamber and communicated with the material discharging port, negative-pressure airflow generated by the negative-pressure air source is introduced into the suspension separation chamber through the second feeding port, the suspension separation chamber is used for receiving materials discharged by the cyclone separation chamber and conducting secondary separation under the action of the negative-pressure airflow, and a stem discharging port is formed in the lower end of the suspension separation chamber. The tobacco shreds and the stem slivers can be further separated, so that the separated tobacco shreds are effectively utilized, and waste of tobacco resources is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to tobacco processing equipment technical field, especially relate to a material sorting device. BACKGROUND

[0002] In the cigarette production process, the content of stem in tobacco material has a significant impact on the quality of finished cigarettes, so separating the appropriate amount of stem from the tobacco material becomes a key process of finished cigarette production, and the separation effect directly affects the quality of finished cigarettes.

[0003] At present, the stem and tobacco separation system of the cigarette machine group is basically completed by a two-stage separation device through primary and secondary air selection. The secondary air selection separates the tobacco and stem by using the principle that the stem, stem block and other impurities and tobacco have different suspension speeds, under the action of the negative pressure air suction of the air chamber body, the slightly heavy tobacco, stem and impurities after the primary air selection are transported to the inlet of the secondary separation device, the stem and stem block are separated and fall into the recycled stem box, and the separated tobacco is directly adsorbed on the tobacco suction belt of the air chamber body, completing the second separation of the stem and tobacco.

[0004] However, the secondary separation process cannot completely separate the tobacco and stem, and the stem still contains qualified tobacco, which cannot be effectively utilized, resulting in a large amount of tobacco scrap and resource waste. INVENTION CONTENTS

[0005] The utility model discloses a material sorting device, which can further separate the tobacco and stem, so that the separated tobacco can be effectively utilized, thereby reducing the waste of tobacco resources.

[0006] To solve the above technical problems, the embodiment of the utility model discloses a material sorting device for separating the stem and tobacco in the material, which comprises:

[0007] A cyclone separation chamber is provided with a conical inner cavity arranged in the vertical direction, and the cross-sectional area of the inner cavity gradually decreases from top to bottom. A first inlet is arranged on the upper side wall of the cyclone separation chamber. The material enters the cyclone separation chamber along the tangent direction of the inner cavity through the first inlet and can make spiral motion along the inner wall of the inner cavity. A tobacco outlet is arranged at the upper end of the cyclone separation chamber, which is connected with a negative pressure air source. The tobacco outlet is used to adsorb the tobacco in the material. A material outlet is arranged at the lower end of the cyclone separation chamber. The remaining material can be discharged through the material outlet under the action of gravity.

[0008] The suspension separation chamber is provided with a second feeding port at its upper end, the second feeding port is communicated with the material outlet, the negative pressure airflow generated by the negative pressure source is introduced into the suspension separation chamber through the second feeding port, the suspension separation chamber is used for receiving the material discharged from the cyclone separation chamber, the cut tobacco and the stem in the material are subjected to secondary separation under the action of the negative pressure airflow, the cut tobacco separated by the suspension separation chamber is sucked into the cyclone separation chamber under the adsorption of the negative pressure airflow, and the lower end of the suspension separation chamber is provided with a stem outlet, which is used for outputting the stem separated by the suspension separation chamber.

[0009] According to the technical scheme, the material enters the cyclone separation chamber through the first feeding port under the action of the negative pressure airflow, and performs spiral motion along the inner wall of the inner cavity in the cyclone separation chamber, the stem with a larger weight in the material is thrown to the inner wall, the stem loses inertia after contacting the inner wall, and falls to the suspension separation chamber through the material outlet under the action of gravity, the cut tobacco with a smaller specific gravity is output through the cut tobacco outlet under the action of the negative pressure airflow, the stem falling to the suspension separation chamber continues to turn under the action of the negative pressure airflow, the cut tobacco with a larger surface area is adsorbed by the negative pressure airflow and returns to the cyclone separation chamber for separation when the contact area between the cut tobacco and the negative pressure airflow is maximum, and the stem with a smaller surface area is output through the stem outlet under the action of gravity, so that the cut tobacco and the stem are further separated, the separated cut tobacco is effectively utilized, and the waste of tobacco resources is reduced.

[0010] According to another specific embodiment of the present application, the embodiment of the present application discloses that the separation cavity is provided in the suspension separation chamber, the separation cavity is communicated with the second feeding port and the stem outlet respectively, and the separation cavity is provided with a first side wall and a second side wall arranged oppositely.

[0011] According to another specific embodiment of the present application, the embodiment of the present application discloses that the separation cavity is provided in the suspension separation chamber, the separation cavity is communicated with the second feeding port and the stem outlet respectively, and the separation cavity is provided with a first side wall and a second side wall arranged oppositely.

[0012] According to another specific embodiment of the present application, the embodiment of the present application discloses that the separation cavity is provided in the suspension separation chamber, the separation cavity is communicated with the second feeding port and the stem outlet respectively, and the separation cavity is provided with a first side wall and a second side wall arranged oppositely.

[0013] According to another specific embodiment of the present application, the embodiment of the present application discloses a material sorting device further comprising a negative pressure air suction pipeline, one end of the negative pressure air suction pipeline is connected with the tobacco shred discharge port, the other end of the negative pressure air suction pipeline is connected with a negative pressure air source, and the negative pressure air suction pipeline is used for conveying the tobacco shred output by the tobacco shred discharge port.

[0014] According to another specific embodiment of the present application, the embodiment of the present application discloses that at least one side wall of the suspension separation chamber is made of transparent material.

[0015] According to another specific embodiment of the present application, the embodiment of the present application discloses that the material sorting device is further provided with a material collecting box and a material conveying pipeline, the material collecting box is arranged at the upstream of the cyclone separation chamber and is used for receiving the material output from the upstream equipment, the two ends of the material conveying pipeline are respectively connected with the discharge port and the first inlet of the material collecting box, a negative pressure airflow is passed through the material conveying pipeline, and the material conveying pipeline is used for conveying the material in the material collecting box to the cyclone separation chamber.

[0016] According to another specific embodiment of the present application, the embodiment of the present application discloses that the material sorting device is further provided with a stem collecting box, the stem collecting box is arranged below the stem discharge port and is used for collecting the stems discharged through the stem discharge port.

[0017] According to another specific embodiment of the present application, the embodiment of the present application discloses that the material sorting device is further provided with a material guide groove, the material guide groove is arranged in the separation channel and the stem collecting box in a manner inclined relative to the vertical direction, and the extension direction of the material guide groove is parallel to the extension direction of the first inclined surface. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 shows a structure schematic view of a material sorting device according to an embodiment of the present application;

[0019] Figure 2 Fig. 2 shows a front view of a material sorting device according to an embodiment of the present application;

[0020] Figure 3 Fig. 3 shows a sectional view of a cyclone separation chamber according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] The following embodiments of the present application will be described in greater detail by the specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. Although the description of the present application will be introduced in combination with the preferred embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications which can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that in the specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0027] As Figure 1 , Figure 2 and Figure 3The embodiment of the utility model provides a kind of material sorting device, for separating stem and tobacco shred in material, material sorting device includes: cyclone separation chamber 1 and suspension separation chamber 2.

[0028] Specifically, the inside of cyclone separation chamber 1 is provided with conical inner cavity 11 arranged along vertical direction, and the cross-sectional area of inner cavity 11 gradually decreases from top to bottom, first inlet 12 is provided on the upper side wall of cyclone separation chamber 1, material enters cyclone separation chamber 1 along the tangent direction of inner cavity 11 through first inlet 12, and can make spiral motion along the inner wall of inner cavity 11;The upper end of cyclone separation chamber 1 is provided with tobacco shred discharge port 13, and tobacco shred discharge port 13 is communicated with negative pressure gas source, and tobacco shred discharge port 13 is used to adsorb tobacco shred in material;The lower end of cyclone separation chamber 1 is provided with material discharge port 14, and the remaining material can be discharged through material discharge port 14 under the action of gravity.

[0029] The upper end of suspension separation chamber 2 is provided with second inlet 21, and second inlet 21 is communicated with material discharge port 14, and the negative pressure airflow generated by negative pressure gas source is introduced into suspension separation chamber 2 from second inlet 21, and suspension separation chamber 2 is used to receive the material discharged from cyclone separation chamber 1, and tobacco shred and stem in material are separated for the second time under the action of negative pressure airflow, and the tobacco shred separated from suspension separation chamber 2 is backflowed to cyclone separation chamber 1 under the adsorption action of negative pressure airflow, and the lower end of suspension separation chamber 2 is provided with stem discharge port 22, and stem discharge port 22 is used to output the stem separated from suspension separation chamber 2.

[0030] Further, with reference to Figure 1The suspension separation chamber 2 is provided with a separation cavity 23 which is communicated with the second inlet 21 and the stem plug outlet 22 respectively, and is provided with a first side wall 231 and a second side wall 232 which are oppositely arranged. The first side wall 231 is provided with a first inclined surface 24, and the distance between the first inclined surface 24 and the second side wall 232 gradually decreases from top to bottom. The second side wall 232 is provided with a second inclined surface 25, and the distance between the second inclined surface 25 and the first side wall 231 gradually decreases from top to bottom. The projection of the second inlet 21 in the vertical direction is at least partially located on the first inclined surface 24, and the upper edge of the second inclined surface 25 is higher than the upper edge of the first inclined surface 24. Specifically, when the stem plugs and the tobacco shreds in the material to be separated need to be separated, the material to be separated is conveyed into the cyclone separation chamber 1 through the first inlet 12 under the action of the negative pressure air source. Since the running direction of the negative pressure air flow conveying the material to be separated is tangent to the inner wall of the cyclone separation chamber 1 when passing through the first inlet 12, and the cyclone separation chamber 1 has a conical structure, the material to be separated can rotate spirally in the cyclone separation chamber 1, so that the stem plugs and the tobacco shreds connected together are separated from each other under the action of the centrifugal force. The stem plugs with relatively large weight in the material to be separated are thrown to the inner wall of the cyclone separation chamber 1, and lose inertia after contacting the inner wall. Subsequently, the stem plugs fall into the suspension separation chamber 2 through the material outlet 14 and the second inlet 21 of the suspension separation chamber 2 under the action of gravity, and the tobacco shreds can be sucked out through the tobacco shred outlet 13 by the negative pressure air flow due to the relatively small weight.

[0031] However, since there may be a small amount of tobacco shreds mixed in the stem plugs discharged from the cyclone separation chamber 1, the suspension separation chamber 2 is arranged to separate the stem plugs and the tobacco shreds again under the action of the negative pressure air flow. Specifically, the suspension separation chamber 2 is provided with the first inclined surface 24 whose distance with the second side wall 232 gradually decreases from top to bottom, and the second inclined surface 25 whose distance with the first side wall 231 gradually decreases from top to bottom. The stem plugs mixed with a small amount of tobacco shreds enter the separation cavity 23 through the second inlet 21 of the suspension separation chamber 2, and first contact the first inclined surface 24. The first inclined surface 24 generates a first force on the stem plugs mixed with a small amount of tobacco shreds, so that the flow direction of the stem plugs mixed with a small amount of tobacco shreds is deviated. The stem plugs mixed with a small amount of tobacco shreds flow along the direction of R1 in the first inclined surface 24 after contacting the first inclined surface 24. Subsequently, the stem plugs mixed with a small amount of tobacco shreds flow to the second inclined surface 25 and contact the second inclined surface 25. The second inclined surface 25 generates a second force on the stem plugs mixed with a small amount of tobacco shreds, so that the flow direction of the stem plugs mixed with a small amount of tobacco shreds is deviated again. The stem plugs mixed with a small amount of tobacco shreds flow along the direction of R2 in the second inclined surface 25 after contacting the second inclined surface 25. Figure 2 Figure 2 ​R2 direction. The application sets the first slope 24 with gradually decreasing spacing from top to bottom between the first side wall 231 and the second slope 25 with gradually decreasing spacing from top to bottom between the second side wall 232, so that the negative pressure airflow carrying the stem plug mixed with a small amount of tobacco generates vortex when entering the space partially enclosed by the first slope 24, the second slope 25 and the first side wall 231 and the second side wall 232, and the stem plug mixed with a small amount of tobacco can be flipped along the R1 direction and the R2 direction under the action of the vortex. Figure 2 The tobacco is flat and the stem plug is strip-shaped, so that the tobacco with large surface area is in contact with the negative pressure airflow during the flipping process, at this time, the contact area between the tobacco and the negative pressure airflow is the largest and the weight of the tobacco is light, so that the tobacco can be again sucked into the cyclone separation chamber 1 through the second inlet 21 of the suspension separation chamber 2, and the cyclone separation chamber 1 can separate the stem plug and the tobacco again, and the contact area between the strip-shaped stem plug and the negative pressure airflow is small and the weight of the stem plug is large during the flipping process, so that the stem plug is output through the stem plug outlet 22 under the action of the gravity, so as to ensure that the tobacco and the stem plug are fully separated, and the separated tobacco is effectively utilized, thereby reducing the waste of tobacco resources.

[0032] In some embodiments, referring to Figure 1 and Figure 2 , the separation cavity 23 is provided below with a separation channel 26, the upper end of the separation channel 26 is in communication with the separation cavity 23, and the lower end of the separation channel 26 is in communication with the stem plug outlet 22. Specifically, the separation channel 26 is inclined relative to the vertical direction, and the extension direction of the separation channel 26 is not parallel to the extension direction of the first slope 24. The application can increase the flow resistance of the negative pressure airflow in the separation cavity 23 by setting the separation channel 26 inclined at a certain angle relative to the vertical direction, thereby increasing the probability of the stem plug mixed with a small amount of tobacco generating vortex in the space formed by the first slope 24, the second slope 25 and the first side wall 231 and the second side wall 232, and prolonging the time of the stem plug mixed with a small amount of tobacco staying in the space, so as to further separate the tobacco and the stem plug, thereby improving the separation efficiency of the suspension separation chamber 2 on the stem plug and the tobacco.

[0033] Specifically, referring to Figure 1 and Figure 2 , the material sorting device further comprises a negative pressure suction duct 3, one end of the negative pressure suction duct 3 is connected with the tobacco outlet 13, the other end of the negative pressure suction duct 3 is connected with a negative pressure air source, and the negative pressure suction duct 3 is used for conveying the tobacco output from the tobacco outlet 13. The application can convey the tobacco discharged from the tobacco outlet 13 to the recycling device after the cyclone separation chamber 1 and the suspension separation chamber 2 are separated, so as to recycle and reuse the tobacco.

[0034] Exemplarily, at least one side wall of the suspension separation chamber 2 is made of a transparent material. Optionally, the transparent material can be a plexiglass plate, which is used as an observation window to facilitate observation of the separation process.

[0035] In some embodiments, as shown in Figure 1 and Figure 2 , the material sorting device of the utility model further is equipped with material collecting box 4 and material conveying pipeline 5, material collecting box 4 is equipped with the upstream of cyclone separation chamber 1, is used to receive the material from the upstream equipment output, and the both ends of material conveying pipeline 5 are connected with the discharge port and first inlet 12 of material collecting box 4 respectively, and the negative pressure airflow is passed in material conveying pipeline 5, and material conveying pipeline 5 is used to convey the material in material collecting box 4 to cyclone separation chamber 1. Specifically, the negative pressure airflow is passed in material conveying pipeline 5, so that the stem and tobacco mixture to be separated is driven along material conveying pipeline 5 to cyclone separation chamber 1 by the air pressure difference generated by the negative pressure airflow.

[0036] In the process of cigarette production, in order to improve the quality of cigarettes, the cigarette machine will remove the stems in the tobacco, and usually a part of tobacco will still be contained in the stem removal. The utility model is provided with material collecting box 4 and material conveying pipeline 5, the stem removal can be collected by material collecting box 4, and the stem removal containing tobacco is conveyed to cyclone separation chamber 1 by material conveying pipeline 5, so that the stems and tobacco in the stem removal are separated, and the tobacco is recycled, which reduces the waste of tobacco and reduces the cost.

[0037] In some embodiments, the material sorting device of the utility model further is equipped with stem collecting box (not shown in the figure), and the stem collecting box is arranged below the stem discharge port 22 and is used to collect the stems discharged through the stem discharge port 22. After the cyclone separation chamber 1 and the suspension separation chamber 2 separate the stems and the tobacco, the separated stems are finally discharged to the stem collecting box through the stem discharge port 22 of the separation channel 26, and the stem collecting box is convenient for collecting the stems in a centralized manner and avoids polluting the production environment of the factory.

[0038] In some embodiments, as shown in Figure 1 and Figure 2 , the material sorting device of the utility model further is equipped with a guide chute 27, the guide chute 27 is arranged between the separation channel 26 and the stem collecting box in a slanting manner relative to the vertical direction, and the extension direction of the guide chute 27 is parallel to the extension direction of the first inclined surface 24. The application can convey the stems discharged through the stem discharge port 22 to the stem collecting box after the cyclone separation chamber 1 and the suspension separation chamber 2 are separated, so as to collect the stems.

[0039] It should be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0040] While the application has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, since the application includes all modifications or equivalents covered by the scope of the claims.

Claims

1. A material sorting device for separating stems and tobacco shreds from materials, characterized in that, The material sorting device includes: The cyclone separator has a vertically oriented conical inner cavity with a cross-sectional area that gradually decreases from top to bottom. A first inlet is located on the upper side wall of the cyclone separator, through which the material enters the cyclone separator tangentially along the inner cavity and moves in a spiral motion along the inner wall. A tobacco outlet is located at the upper end of the cyclone separator, connected to a negative pressure air source, and is used to adsorb tobacco shreds from the material. A material outlet is located at the lower end of the cyclone separator, through which the remaining material is discharged under gravity. The suspension separation chamber has a second inlet at its upper end, which is connected to the material outlet. A negative pressure airflow generated by the negative pressure air source enters the suspension separation chamber through the second inlet. The suspension separation chamber receives the material discharged from the cyclone separation chamber. The tobacco shreds and stems entering the suspension separation chamber undergo secondary separation under the action of the negative pressure airflow. The tobacco shreds separated in the suspension separation chamber flow back to the cyclone separation chamber under the adsorption effect of the negative pressure airflow. The lower end of the suspension separation chamber has a stem outlet, which is used to discharge the suspended material. The stems separated in the chamber are output; the suspension separation chamber is provided with a separation cavity, which is connected to the second inlet and the stem outlet respectively. The separation cavity is provided with a first sidewall and a second sidewall that are arranged opposite to each other; the first sidewall is provided with a first inclined surface, and the distance between the first inclined surface and the second sidewall gradually decreases from top to bottom; the second sidewall is provided with a second inclined surface, and the distance between the second inclined surface and the first sidewall gradually decreases from top to bottom; the projection of the second inlet along the vertical direction is at least partially located on the first inclined surface, and the upper edge of the second inclined surface is higher than the upper edge of the first inclined surface.

2. The material sorting device as described in claim 1, characterized in that, A separation channel is provided below the separation chamber. The upper end of the separation channel is connected to the separation chamber, and the lower end of the separation channel is connected to the stem discharge port.

3. The material sorting device as described in claim 2, characterized in that, The separation channel is inclined relative to the vertical direction.

4. The material sorting device as described in claim 3, characterized in that, It also includes a negative pressure suction pipe, one end of which is connected to the tobacco shred outlet and the other end of which is connected to the negative pressure air source. The negative pressure suction pipe is used to transport the tobacco shreds output from the tobacco shred outlet.

5. The material sorting device as described in claim 1, characterized in that, At least one sidewall of the suspension separation chamber is made of a transparent material.

6. The material sorting device as described in claim 1, characterized in that, It is also equipped with a material collection box and a material conveying pipeline. The material collection box is located upstream of the cyclone separator and is used to receive the material output from the upstream equipment. The two ends of the material conveying pipeline are respectively connected to the outlet of the material collection box and the first inlet. The material conveying pipeline is filled with negative pressure airflow and is used to convey the material in the material collection box to the cyclone separator.

7. The material sorting device as described in claim 1, characterized in that, A stem collection box is also provided, which is located below the stem discharge port and is used to collect the stems discharged through the stem discharge port.

8. The material sorting device as described in claim 4, characterized in that, It is also provided with a guide trough, which is inclined relative to the vertical direction between the separation channel and the stem collection box, and the extension direction of the guide trough is parallel to the extension direction of the first inclined surface.

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