Separation and recovery device

Abstract

The utility model provides a separating and recycling device which comprises a separating mechanism, a first cyclone separator and an air locking and discharging mechanism, the separating mechanism can separate stem slivers and tobacco shreds which are input into the separating mechanism, and a tobacco shred outlet is formed in the upper end of the separating mechanism; a cavity is formed in the first cyclone separator, a feeding port is formed in the side wall of the first cyclone separator and communicated with the tobacco shred outlet, a negative pressure port and a discharging port are formed in the upper end and the lower end of the first cyclone separator respectively, and the negative pressure port is connected with a negative pressure air source. The tobacco shreds entering the first cyclone separator can spirally rotate in the first cyclone separator; the air locking and discharging mechanism is arranged below the first cyclone separator, can prevent external air from entering the first cyclone separator and can discharge the tobacco shreds discharged from the discharging port outwards. According to the separating and recycling device, the purity of recycled tobacco shreds can be improved, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of cigarette production technology, and in particular to a separation and recycling device. Background Technology

[0002] During the cigarette manufacturing process, in order to improve cigarette quality, the cigarette rolling machine automatically removes the stems from the tobacco. To ensure thorough removal of the stems, it is unavoidable that some tobacco is also removed during the stem removal process, resulting in a certain amount of tobacco included in the removed material and causing waste.

[0003] To avoid wasting tobacco, a separation device is typically used to separate the stems and shreds from the stalks removed from the tobacco, and then the separated tobacco is recycled. Currently, tobacco recycling mainly involves setting up a collection container at the outlet of the separation device to collect the tobacco, and then feeding the collected tobacco back into the cigarette-making machine for processing. However, because the tobacco separated by the separation device still contains a certain amount of dust and other impurities, the purity of the recycled tobacco is relatively low, thus affecting product quality. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem of low purity of recycled tobacco, which affects product quality. This invention provides a separation and recycling device that can improve the purity of recycled tobacco and thus improve product quality.

[0005] This utility model provides a separation and recycling device for separating tobacco stems and tobacco shreds, and recycling the tobacco shreds. The separation and recycling device includes:

[0006] The separation mechanism can separate the stems and tobacco shreds fed into it. The upper end of the separation mechanism is equipped with a tobacco shred outlet, through which the tobacco shreds separated by the separation mechanism can be discharged outward.

[0007] The first cyclone separator has a first cavity extending vertically inside. The first cavity is conical, and its cross-sectional area gradually decreases along the vertical direction. The side wall of the first cyclone separator has a feed inlet connected to the tobacco outlet. The upper and lower ends of the first cyclone separator have a negative pressure port and a discharge port, respectively. The negative pressure port is connected to a negative pressure gas source. The tobacco discharged from the tobacco outlet can enter the first cyclone separator through the feed inlet under the action of the negative pressure gas. The axial direction of the feed inlet is parallel to the tangent direction of the inner wall of the first cyclone separator, so that the tobacco entering the first cyclone separator can rotate in a spiral manner inside the first cyclone separator.

[0008] The airlock unloading mechanism is located below the first cyclone separator. The airlock unloading mechanism can prevent outside air from entering the interior of the first cyclone separator and can discharge the tobacco shreds discharged from the outlet.

[0009] According to another specific embodiment of the present invention, the airlock unloading mechanism includes:

[0010] The material feeding channel extends vertically, and its upper end is connected to the discharge port, allowing the tobacco discharged through the discharge port to fall into the material feeding channel.

[0011] The sealed box is located below the material discharge channel. Its inner wall has an arc surface. The upper and lower ends of the sealed box are respectively provided with a first opening and a second opening. The first opening is connected to the lower end of the material discharge channel, and the tobacco in the material discharge channel can enter the sealed box through the first opening.

[0012] The discharge impeller is located inside the sealed box. The discharge impeller includes a rotating shaft extending in a first direction and multiple blades. The multiple blades are arranged sequentially on the outer circumferential surface of the rotating shaft along the circumference of the rotating shaft. The rotating shaft can rotate around its own axis to drive the blades to rotate. The side of the blade away from the rotating shaft can contact the arc surface inside the sealed box. The blades are arranged with two side edges spaced apart along the axial direction of the rotating shaft. Both side edges can contact the inner side wall of the sealed box. The discharge impeller is used to discharge tobacco shreds outward from the second opening.

[0013] The motor is located outside the sealed box and is used to drive the shaft to rotate.

[0014] According to another specific embodiment of the present invention, it also includes a negative pressure conveying pipe, which is filled with negative pressure gas. The first end of the negative pressure conveying pipe is connected to the tobacco outlet, and the second end is connected to the feed inlet. The negative pressure conveying pipe is used to convey tobacco.

[0015] According to another specific embodiment of the present invention, the separating mechanism includes:

[0016] The second cyclone separator has a second conical cavity extending vertically inside, with its cross-sectional area gradually decreasing vertically. A stem feed inlet is located on one side of the second cyclone separator, through which the mixture containing stems and tobacco shreds can enter the separator. The upper and lower ends of the second cyclone separator have tobacco shred outlets and stem shred outlets, respectively. The tobacco shred outlet is connected to a negative pressure gas source, allowing the mixture to enter the separator through the stem shred feed inlet under the influence of negative pressure gas. The axial direction of the stem shred feed inlet is parallel to the tangent of the inner wall of the second cyclone separator, enabling the mixture to rotate spirally within the separator. This causes the stems and tobacco shreds to separate under centrifugal force. The separated tobacco shreds are discharged through the tobacco shred outlet, and the separated stems are discharged through the stem shred outlet.

[0017] The air separation mechanism is located below the second cyclone separator. The air separation mechanism has an air separation channel that extends vertically. The upper end of the air separation channel is the inlet, and the lower end is the outlet. The inlet is located below the stem outlet. The material discharged from the stem outlet can enter the air separation channel through the inlet. The air separation channel is filled with upward-flowing air separation gas. The air separation channel can further separate the material inside. The tobacco separated by the air separation channel can return to the second cyclone separator through the inlet, and the separated stems can be discharged outward through the outlet.

[0018] According to another specific embodiment of the present invention, it also includes a stalk collection hopper and a stalk conveying pipe. The stalk collection hopper is located on one side of the second cyclone separator. The first end of the stalk conveying pipe is connected to the stalk collection hopper, and the second end is connected to the stalk inlet. The stalk collection hopper can receive the mixture to be separated produced in the workshop, and the stalk conveying pipe is used to convey the mixture to be separated into the second cyclone separator.

[0019] According to another specific embodiment of the present invention, a first vacuum conveyor is provided on the stem conveying pipeline. The first vacuum conveyor is used to extract the gas in the stem conveying pipeline so as to drive the mixture to be separated along the stem conveying pipeline into the second cyclone separator by the pressure difference.

[0020] According to another specific embodiment of the present invention, it also includes a stem collection hopper, which is located below the outlet and is used to collect the stems discharged through the outlet.

[0021] According to another specific embodiment of the present invention, it also includes a tobacco shred collection hopper, which is located below the second opening in the airlock unloading mechanism. The tobacco shred collection hopper is used to collect the tobacco shreds output through the second opening.

[0022] According to another specific embodiment of the present invention, the tobacco shred collection hopper is connected to a tobacco shred recycling and conveying pipe, which is used to transport the tobacco shreds collected by the tobacco shred collection hopper to the recycling station.

[0023] According to another specific embodiment of the present invention, a second vacuum conveyor is provided on the tobacco recycling and conveying pipeline. The second vacuum conveyor is used to extract the gas in the tobacco recycling and conveying pipeline so as to drive the tobacco along the tobacco recycling and conveying pipeline to the recycling station through the gas pressure difference.

[0024] Compared with the prior art, this utility model has the following beneficial effects:

[0025] The separation and recycling device provided by this utility model includes a separation mechanism and a first cyclone separator. When it is necessary to separate and recycle the stems and stalks, the stems and stalks are first fed into the separation mechanism, where the stems and stalks are separated from each other. Subsequently, the separated tobacco shreds are drawn into the first cyclone separator through the inlet under the action of a negative pressure air source. The tobacco shreds entering the first cyclone separator can rotate spirally within it, so that the tobacco shreds and impurities are separated from each other under the action of centrifugal force. This application also incorporates an airlock unloading mechanism to prevent the tobacco shreds in the first cyclone separator from being sucked away by the negative pressure. Since the weight of dust and other impurities is relatively light, the separated impurities are sucked away through the negative pressure port, and the separated tobacco shreds are discharged through the outlet and the airlock unloading mechanism for recycling. By incorporating the first cyclone separator and the airlock unloading mechanism, this application improves the purity of the recycled tobacco shreds, thereby improving product quality. Attached Figure Description

[0026] Figure 1 This diagram shows a separation and recycling device provided in one embodiment of the present invention;

[0027] Figure 2 A schematic diagram of an airlock unloading mechanism provided in an embodiment of the present invention is shown;

[0028] Figure 3 A schematic diagram of a separation mechanism provided in an embodiment of the present invention is shown.

[0029] Figure label:

[0030] 1. Separation mechanism; 11. Second cyclone separator; 111. Tobacco outlet; 112. Stem stick outlet; 113. Stem inlet; 2. First cyclone separator; 21. Inlet; 22. Negative pressure port; 23. Outlet; 3. Airlock unloading mechanism; 31. Drop channel; 32. Sealed box; 321. First opening; 322. Second opening; 323. Arc surface; 33. Discharge impeller; 331. Rotating shaft; 332. Blade; 333. Side; 34. Motor; 4. Negative pressure conveying pipe; 5. Air separation channel; 51. Inlet; 52. Outlet; 6. Stem collection hopper; 7. Stem conveying pipe; 71. First vacuum conveyor; 8. Stem stick collection hopper; 9. Tobacco collection hopper; 10. Tobacco recycling conveying pipe; 101. Second vacuum conveyor. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0032] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0035] Currently, the recycling of tobacco mainly involves setting up a collection container at the outlet of a separation device to collect the tobacco, and then feeding the collected tobacco back into the cigarette-making machine for processing. However, because the tobacco separated by the separation device still contains a certain amount of dust and other impurities, the purity of the recycled tobacco is relatively low, thus affecting product quality.

[0036] To address the aforementioned technical problems, this utility model provides a separation and recycling device that can improve the purity of recycled tobacco and enhance product quality.

[0037] To make the technical solution and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below.

[0038] refer to Figure 1This utility model provides a separation and recycling device, including a separation mechanism 1, a first cyclone separator 2, and an airlock unloading mechanism 3. The separation mechanism 1 can separate the stems and tobacco shreds input into it. The upper end of the separation mechanism 1 is provided with a tobacco shred outlet 111, through which the tobacco shreds separated by the separation mechanism 1 can be discharged outward. The first cyclone separator 2 has a vertically oriented (e.g., Figure 1 The first cavity extends in the Y direction (as shown in the diagram). The first cavity is conical, and its cross-sectional area gradually decreases along the vertical direction. A feed inlet 21 is provided on the side wall of the first cyclone separator 2, and the feed inlet 21 is connected to the tobacco outlet 111. The upper and lower ends of the first cyclone separator 2 are respectively provided with a negative pressure port 22 and a discharge port 23 (in this embodiment, "upper" refers to the direction shown in the diagram). Figure 1 As shown in direction A, the "down" direction is as follows: Figure 1 As shown in direction B), the negative pressure port 22 is connected to a negative pressure gas source (not shown in the figure). The tobacco discharged through the tobacco outlet 111 can enter the first cyclone separator 2 through the feed inlet 21 under the action of negative pressure gas. The feed inlet 21 is circular, and the axis of the feed inlet 21 is parallel to the tangent direction of the inner wall of the first cyclone separator 2, so that the tobacco entering the first cyclone separator 2 can rotate spirally inside the first cyclone separator 2. The airlock unloading mechanism 3 is located below the first cyclone separator 2. The airlock unloading mechanism 3 can prevent outside air from entering the interior of the first cyclone separator 2 and can discharge the tobacco discharged from the outlet 23 outward.

[0039] When it is necessary to separate and recycle the stems and stalks, the stems and stalks are first fed into the separation mechanism 1, where they are separated from the tobacco. Subsequently, the separated tobacco is drawn into the first cyclone separator 2 through the feed inlet 21 under negative pressure. Since the axis of the feed inlet 21 is parallel to the tangential direction of the inner wall of the first cyclone separator 2, the tobacco's running direction is parallel to the tangential direction of the inner wall of the first cyclone separator 2 as it enters. The tobacco entering the first cyclone separator 2 can rotate spirally within it, allowing the tobacco and impurities to separate under centrifugal force. Specifically, under the action of centrifugal force, the tobacco shreds are thrown onto the inner wall of the first cyclone separator 2. When the tobacco shreds touch the inner wall of the first cyclone separator 2, they lose the inertia of radial movement along the first cyclone separator 2 and fall down along the inner wall of the first cyclone separator 2 by gravity, and are discharged through the discharge port 23. Dust and other impurities continue to rotate and fall down inside the first cyclone separator 2 under the action of airflow. During the process of airflow descent, due to the conical structure of the first cyclone separator 2, the airflow continuously flows into the central part of the first cyclone separator 2, forming a centripetal radial airflow. This part of the airflow constitutes an upward rotating inner vortex. Finally, dust and other impurities are discharged outward through the negative pressure port 22.

[0040] This application also incorporates an airlock unloading mechanism 3, which prevents the tobacco shreds in the first cyclone separator 2 from being sucked away by negative pressure. Since dust and other impurities are relatively light, the separated impurities are sucked away through the negative pressure port, and the separated tobacco shreds are discharged through the outlet 23 and the airlock unloading mechanism 3 for recycling. By incorporating the first cyclone separator 2 and the airlock unloading mechanism 3, this application can separate and discharge impurities from the tobacco shreds, improving the purity of the recycled tobacco shreds and thus enhancing product quality.

[0041] Optionally, refer to Figure 1 and Figure 2 The airlock unloading mechanism 3 includes a material discharge channel 31, a sealed box 32, a discharge impeller 33, and a motor 34. The material discharge channel 31 extends vertically, and its upper end is connected to the discharge port 23, allowing tobacco discharged through the discharge port 23 to fall into the material discharge channel 31. The sealed box 32 is located below the material discharge channel 31, and its inner wall is provided with an arc surface 323. The upper and lower ends of the sealed box 32 are respectively provided with a first opening 321 and a second opening 322. The first opening 321 is connected to the lower end of the material discharge channel 31, allowing tobacco in the material discharge channel 31 to enter the sealed box 32 through the first opening 321. The discharge impeller 33 is located inside the sealed box 32, and the discharge impeller 33 includes components along a first direction (e.g., ...). Figure 2 (As shown in the X direction) An extending shaft 331 and multiple blades 332 are arranged sequentially on the outer circumferential surface of the shaft 331. The shaft 331 can rotate around its own axis to drive the blades 332 to rotate. The side of the blade 332 away from the shaft 331 can contact the arc surface 323 inside the sealing box 32. The blade 332 has two side edges 333 spaced apart along the axial direction of the shaft 331. Both side edges 333 can contact the inner wall of the sealing box 32 to form a sealed cavity between adjacent blades 332. During rotation, the discharge impeller 33 can discharge tobacco from the second opening 322. A motor 34 is located outside the sealing box 32 and is used to drive the shaft 331 to rotate.

[0042] When the airlock unloading device is working, the side of the blades 332 on the discharge impeller 33 away from the rotating shaft 331 can contact the arc surface 323 inside the sealed box 32, and the two sides 333 on the blades 332 can also contact the inner wall of the sealed box 32. Therefore, the discharge impeller 33 can prevent outside air from entering the first cyclone separator 2 through the second opening 322 at the bottom of the sealed box 32, thereby preventing the tobacco in the first cyclone separator 2 from being sucked away by negative pressure. Since dust and other impurities are relatively light, the separated impurities can be sucked away by negative pressure gas through the negative pressure port 22 at the top of the first cyclone separator 2. The separated tobacco falls into the sealed box 32 through the dropping channel 31, and under the action of the rotating discharge impeller 33, the tobacco is discharged outward through the second opening 322. This embodiment improves the purity of the recovered tobacco by setting the first cyclone separator 2 and the airlock unloading mechanism 3, thereby improving product quality.

[0043] Optionally, refer to Figure 1 The separation and recycling device provided in this embodiment also includes a negative pressure conveying pipe 4, which is filled with negative pressure gas. The first end of the negative pressure conveying pipe 4 is connected to the tobacco outlet 111, and the second end is connected to the feed inlet 21. The negative pressure conveying pipe 4 is used to convey tobacco. By setting the negative pressure conveying pipe 4, this application can convey the tobacco discharged through the tobacco outlet 111 after separation by the separation mechanism 1 to the first cyclone separator 2 for purification of the tobacco.

[0044] Optionally, refer to Figure 1 and Figure 3The separation mechanism 1 includes a second cyclone separator 11 and an air separation mechanism. The second cyclone separator 11 has a second cavity extending vertically inside. The second cavity is conical, and its cross-sectional area gradually decreases vertically. A stem feed inlet 113 is provided on one side of the second cyclone separator 11, through which the mixture to be separated, containing stems and tobacco, enters the second cyclone separator 11. The upper and lower ends of the second cyclone separator 11 are respectively provided with a tobacco outlet 111 and a stem outlet 112. The tobacco outlet 111 is connected to a negative pressure air source. The material can enter the second cyclone separator 11 through the stem feed inlet 113 under the action of negative pressure gas. The stem feed inlet 113 is circular, and the axial direction of the stem feed inlet 113 is parallel to the tangential direction of the inner wall of the second cyclone separator 11, so that the mixture to be separated entering the second cyclone separator 11 can rotate in a spiral manner in the second cyclone separator 11, so that the stem sticks and tobacco shreds are separated under the action of centrifugal force. The tobacco shreds separated by the second cyclone separator 11 can be discharged outward through the tobacco outlet 111, and the separated stem sticks can be discharged outward through the stem stick outlet 112. The air separation mechanism is located below the second cyclone separator 11. The air separation mechanism is equipped with an air separation channel 5, which extends vertically. The upper end of the air separation channel 5 is the inlet 51, and the lower end is the outlet 52. The inlet 51 is located below the stem outlet 112. The material discharged from the stem outlet 112 can enter the air separation channel 5 through the inlet 51. The air separation channel 5 is filled with upward-flowing air separation gas. The air separation channel 5 can further separate the material inside. The tobacco separated by the air separation channel 5 can return to the second cyclone separator 11 through the inlet 51, and the separated stems can be discharged outward through the outlet 52.

[0045] When it is necessary to separate the stems and tobacco shreds in the mixture to be separated, the mixture is fed into the second cyclone separator 11 through the stem feed inlet 113 under the action of a negative pressure air source. Because the negative pressure airflow conveying the mixture is tangential to the inner wall of the second cyclone separator 11 when passing through the stem feed inlet 113, and due to the conical structure inside the second cyclone separator 11, the mixture entering the second cyclone separator 11 can rotate spirally within it, causing the connected stems and tobacco shreds to separate from each other under centrifugal force. Subsequently, the stems fall into the air separation channel 5 through the stem outlet 112 and the inlet 51 of the air separation channel 5 under gravity, while the tobacco shreds, being lighter, can be drawn out through the tobacco outlet 111 by the negative pressure gas. This application utilizes centrifugal force to separate the connected stems and tobacco shreds, ensuring sufficient separation of the stems and tobacco shreds, thereby improving separation efficiency and reducing tobacco waste.

[0046] Furthermore, this application also includes an air separation mechanism with an air separation channel 5. Stems discharged from the stem outlet 112 fall into the air separation channel 5. Since the stems discharged from the second cyclone separator 11 may still contain a small amount of tobacco shreds, this application, by setting up an air separation mechanism, further separates the stems and tobacco shreds under the action of air separation gas. The stems are discharged outwards through the outlet 52 of the air separation channel 5 under gravity, while the lighter tobacco shreds return to the second cyclone separator 11 through the inlet 51 of the air separation channel 5. The second cyclone separator 11 can then further separate the stems and tobacco shreds within it, repeating the above steps until all stems and tobacco shreds are separated. The second cyclone separator 11 then discharges the separated tobacco shreds through the tobacco outlet 111 to the first cyclone separator 2 for tobacco shred recycling. This utility model, by setting up the separation mechanism 1, can improve the separation efficiency of stems and tobacco shreds, reduce tobacco waste, and lower costs.

[0047] Optionally, refer to Figure 1 The separation and recycling device provided in this embodiment also includes a stem collection hopper 6 and a stem conveying pipe 7. The stem collection hopper 6 is located on one side of the second cyclone separator 11. The first end of the stem conveying pipe 7 is connected to the stem collection hopper 6, and the second end is connected to the stem inlet 113. The stem collection hopper 6 can receive the mixture to be separated, which includes stems and tobacco shreds, produced in the workshop. The stem conveying pipe 7 is used to convey the mixture to be separated into the second cyclone separator 11. Specifically, refer to... Figure 1 The stem conveying pipe 7 is equipped with a first vacuum conveyor 71, which is used to extract the gas in the stem conveying pipe 7 so as to drive the mixture to be separated along the stem conveying pipe 7 into the second cyclone separator 11 by the pressure difference.

[0048] During the cigarette-making process in the workshop, in order to improve the quality of cigarettes, the cigarette-making machine removes the stems from the tobacco. The removed stems usually contain some tobacco. This application addresses this by installing a stem collection hopper 6 and a stem conveying pipe 7. The stem collection hopper 6 collects the removed stems, and the stem conveying pipe 7 transports the removed stems containing tobacco to a second cyclone separator 11 for separation of the stems and tobacco. The tobacco is then recycled, reducing tobacco waste and lowering costs.

[0049] Optionally, refer to Figure 1 The separation and recycling device provided in this embodiment also includes a stem collection hopper 8, which is located below the outlet 52 of the air separation channel 5 and is used to collect the stems discharged through the outlet 52. After the separation mechanism 1 separates the stems and tobacco, the separated stems are finally discharged into the stem collection hopper 8 through the outlet 52 of the air separation channel 5. The stem collection hopper 8 facilitates the centralized collection of stems and avoids contamination of the workshop.

[0050] Optionally, refer to Figure 1 This embodiment also includes a tobacco collection hopper 9, located below the second opening 322 in the airlock unloading mechanism 3. The tobacco collection hopper 9 is used to collect the tobacco output through the second opening 322. The tobacco processed by the first cyclone separator 2 is discharged into the tobacco collection hopper 9 through the second opening 322 located on the sealed box 32. By setting up the tobacco collection hopper 9, this application facilitates the centralized recycling of tobacco.

[0051] Optionally, refer to Figure 1 The tobacco collection hopper 9 is connected to a tobacco recycling and conveying pipe 10, which is used to transport the tobacco collected by the tobacco collection hopper 9 to the recycling station (the recycling station is used for the reuse of tobacco, as shown in the figure). Specifically, refer to... Figure 1 A second vacuum conveyor 101 is installed on the tobacco shred recycling and conveying pipeline 10. The second vacuum conveyor 101 is used to extract the gas in the tobacco shred recycling and conveying pipeline 10, so as to drive the tobacco shreds along the tobacco shred recycling and conveying pipeline 10 towards the recycling station through the air pressure difference. The tobacco shreds collected by the tobacco shred collection hopper 9 can be directly conveyed to the recycling station through the tobacco shred recycling and conveying pipeline 10, without the need for the operator to manually take the tobacco shreds to the recycling station, saving manpower and improving efficiency.

[0052] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A separation and recycling device for separating tobacco stems and shredded tobacco, and recycling the shredded tobacco, characterized in that, The separation and recovery device includes: The separation mechanism is capable of separating the stems and tobacco shreds fed into it. The upper end of the separation mechanism is provided with a tobacco shred outlet, through which the tobacco shreds separated by the separation mechanism can be discharged outward. The first cyclone separator has a first cavity extending vertically inside. The first cavity is conical, and its cross-sectional area gradually decreases along the vertical direction. A feed inlet is provided on the side wall of the first cyclone separator, which is connected to the tobacco outlet. The upper and lower ends of the first cyclone separator are respectively provided with a negative pressure port and a discharge port. The negative pressure port is connected to a negative pressure gas source. The tobacco discharged through the tobacco outlet can enter the first cyclone separator through the feed inlet under the action of the negative pressure gas. The axial direction of the feed inlet is parallel to the tangent direction of the inner wall of the first cyclone separator, so that the tobacco entering the first cyclone separator can rotate in a spiral manner inside the first cyclone separator. An airlock unloading mechanism is located below the first cyclone separator. The airlock unloading mechanism can prevent outside air from entering the interior of the first cyclone separator and can discharge the tobacco shreds discharged from the outlet.

2. The separation and recovery device as described in claim 1, characterized in that, The airlock unloading mechanism includes: The material feeding channel extends along the vertical direction, and the upper end of the material feeding channel is connected to the discharge port, so that the tobacco shreds discharged through the discharge port can fall into the material feeding channel; A sealed box is located below the material discharge channel. Its inner side wall is provided with an arc surface. The upper and lower ends of the sealed box are respectively provided with a first opening and a second opening. The first opening is connected to the lower end of the material discharge channel. The tobacco in the material discharge channel can enter the sealed box through the first opening. A discharge impeller is disposed inside the sealed box. The discharge impeller includes a rotating shaft extending along a first direction and multiple blades. The multiple blades are sequentially disposed on the outer circumferential surface of the rotating shaft along its circumference. The rotating shaft can rotate around its own axis to drive the blades to rotate. The side of the blade away from the rotating shaft can contact the arc surface inside the sealed box. The blade has two side edges spaced apart along the axial direction of the rotating shaft. Both side edges contact the inner sidewall of the sealed box. The discharge impeller is used to discharge the tobacco shreds outward from the second opening. The motor is located outside the sealed box and is used to drive the rotating shaft to rotate.

3. The separation and recovery device as described in claim 2, characterized in that, It also includes a negative pressure conveying pipe, which is filled with the negative pressure gas. The first end of the negative pressure conveying pipe is connected to the tobacco outlet, and the second end is connected to the feed inlet. The negative pressure conveying pipe is used to convey the tobacco.

4. The separation and recovery device as described in claim 3, characterized in that, The separation mechanism includes: The second cyclone separator has a second conical cavity extending vertically inside, with its cross-sectional area gradually decreasing along the vertical direction. A stem feed inlet is located on one side of the second cyclone separator, through which the mixture to be separated, including the stems and tobacco, enters the second cyclone separator. The upper and lower ends of the second cyclone separator are respectively provided with a tobacco outlet and a stem outlet. The tobacco outlet is connected to the negative pressure gas source, allowing the mixture to be separated to enter the second cyclone separator through the stem feed inlet under the action of the negative pressure gas. The axial direction of the stem feed inlet is parallel to the tangent direction of the inner wall of the second cyclone separator, so that the mixture entering the second cyclone separator can rotate spirally within it. The stems and tobacco separate under centrifugal force. The tobacco separated by the second cyclone separator is discharged outward through the tobacco outlet, and the separated stems are discharged outward through the stem outlet. An air separation mechanism is located below the second cyclone separator. The air separation mechanism has an air separation channel that extends vertically. The upper end of the air separation channel is the inlet, and the lower end is the outlet. The inlet is located below the stem outlet. The material discharged from the stem outlet can enter the air separation channel through the inlet. The air separation channel is filled with upward-flowing air separation gas. The air separation channel can further separate the material inside. The tobacco separated by the air separation channel can return to the second cyclone separator through the inlet, and the separated stems can be discharged outward through the outlet.

5. The separation and recovery device as described in claim 4, characterized in that, It also includes a stalk collection hopper and a stalk conveying pipe. The stalk collection hopper is located on one side of the second cyclone separator. The first end of the stalk conveying pipe is connected to the stalk collection hopper, and the second end is connected to the stalk inlet. The stalk collection hopper can receive the mixture to be separated produced in the workshop, and the stalk conveying pipe is used to convey the mixture to be separated into the second cyclone separator.

6. The separation and recovery device as described in claim 5, characterized in that, The stem conveying pipeline is equipped with a first vacuum conveyor, which is used to extract the gas in the stem conveying pipeline so as to drive the mixture to be separated along the stem conveying pipeline into the second cyclone separator by the pressure difference.

7. The separation and recovery device as described in claim 6, characterized in that, It also includes a stem collection hopper, located below the outlet, for collecting the stems discharged through the outlet.

8. The separation and recovery device as described in claim 7, characterized in that, It also includes a tobacco collection hopper, located below the second opening in the airlock unloading mechanism, the tobacco collection hopper being used to collect the tobacco output through the second opening.

9. The separation and recovery device as described in claim 8, characterized in that, The tobacco collection hopper is connected to a tobacco recycling and conveying pipe, which is used to transport the tobacco collected by the tobacco collection hopper to the recycling station.

10. The separation and recovery apparatus as described in claim 9, characterized in that, The tobacco recycling and conveying pipeline is equipped with a second vacuum conveyor, which is used to extract the gas in the tobacco recycling and conveying pipeline so as to drive the tobacco along the tobacco recycling and conveying pipeline to the recycling station through the gas pressure difference.

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