A tobacco stem storage device for a papermaking method reconstituted tobacco leaf production process

Abstract

The present invention belongs to the technical field of reconstituted tobacco production and processing, and specifically relates to a tobacco stem storage device for the papermaking process of reconstituted tobacco production. The tobacco stem storage device for the papermaking process of reconstituted tobacco production includes a storage body and a first loosening stirring mechanism, a second loosening stirring mechanism and a third loosening stirring mechanism arranged in the storage body; the storage body includes a rectangular upper bin body, and a first hopper and a second hopper arranged at the bottom end of the upper bin body; an upper cover is provided at the top end of the upper bin body, and the upper cover is detachably connected to the top end of the upper bin body; the first hopper and the second hopper are symmetrically arranged side by side at the bottom end of the upper bin body. The tobacco stem storage device for the papermaking process of reconstituted tobacco production of the present invention realizes the loosening of washed tobacco stems, avoids the expansion and compaction of washed tobacco stems during storage, improves the discharge efficiency of washed tobacco stems, and effectively controls the temporary storage and discharge time of tobacco stems, thereby improving the quality of tobacco stems in the papermaking process of reconstituted tobacco production.

Description

Technical Field

[0001] The invention belongs to the technical field of reconstituted tobacco production and processing, and in particular relates to a tobacco stem storage device in the production process of reconstituted tobacco using a papermaking method. Background Art

[0002] The raw materials used in the production of reconstituted tobacco leaves by the papermaking method mainly include tobacco stems, broken tobacco pieces, and tobacco dust. Among them, the total sugar, reducing sugar and inorganic salt contents of tobacco stems are higher than those of broken tobacco pieces and tobacco dust, especially the chlorine and potassium contents are significantly higher. Since sugar, chlorine, potassium and other components are easily soluble in water, the tobacco stems usually need to be washed before entering the leaching section to control the quality of the tobacco stems entering the leaching section, especially the stability of chemical indicators. After washing, the tobacco stems are pumped to the tobacco stem squeezer and enter the leaching section after solid-liquid separation.

[0003] To ensure that the effective substances in tobacco are fully dissolved, the first-stage extraction is usually intermittent and carried out in batches, and the extraction time is strictly controlled. This will lead to two problems: 1. On the one hand, if the batch feed amount of the tobacco stem formula is large, it will take a long time for the same batch of washed tobacco stems to enter the first-stage extraction, resulting in large differences in the extraction time of the washed tobacco stems that enter the first-stage extraction first and last, and the stability of the extraction liquid quality is difficult to ensure; 2. On the other hand, when the washed tobacco stems begin to be fed, the first-stage extraction equipment starts to run until the batch of materials reaches the required time for the first-stage extraction and the unloading is completed, which greatly increases the running time and leads to increased production energy consumption.

[0004] Based on the above problems, a variety of washed tobacco stem storage devices have been designed in the prior art. However, since the moisture content of the washed tobacco stems increases from about 12% to about 70%, the mass increases while the volume increases by nearly 1 times. The higher moisture content causes the washed tobacco stems to continue to expand during storage, which in turn causes the washed tobacco stems to be compacted after storage, and the viscosity of the tobacco stem material increases and the fluidity decreases. Traditional washed tobacco stem storage devices cannot achieve normal discharge, and the storage time and storage capacity are greatly limited.

[0005] Therefore, it is necessary to design a tobacco stem storage device in the process of reconstituted tobacco production that is convenient for storage and discharge to solve the technical problems existing in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to overcome the shortcomings of the existing technology, fully consider the characteristics of washed tobacco stem materials and the needs of fast and smooth discharge after storage, and provide a tobacco stem storage device for the papermaking method of reconstituted tobacco production process, so as to achieve loose processing of washed tobacco stems, avoid expansion and compaction of washed tobacco stems during storage, improve the discharge efficiency of washed tobacco stems, and effectively control the temporary storage and discharge time of tobacco stems, thereby improving the quality of tobacco stems in the papermaking method of reconstituted tobacco production process.

[0007] Based on the above objectives, the present invention adopts the following technical solutions:

[0008] A tobacco stem storage device for a papermaking process of reconstituted tobacco leaf production, the tobacco stem storage device being disposed between a tobacco stem solid-liquid separation device and a first-stage leaching device, comprising a storage body and a first loosening stirring mechanism, a second loosening stirring mechanism, and a third loosening stirring mechanism disposed within the storage body;

[0009] The storage body includes a rectangular upper storage body, and a first hopper and a second hopper arranged at the bottom end of the upper storage body;

[0010] An upper cover is provided on the top of the upper bin body, which is detachably connected to the top of the upper bin body and has a feed inlet and a liquid inlet.

[0011] The first hopper and the second hopper are symmetrically arranged side by side at the bottom end of the upper bin body;

[0012] A first discharge pipe extending vertically is provided below the first hopper; a first discharge valve is provided at the bottom end of the first discharge pipe;

[0013] A second discharge pipe extending vertically is provided below the second hopper; a second discharge valve is provided at the bottom end of the second discharge pipe;

[0014] The bottom end of the storage body is also provided with supporting legs.

[0015] Furthermore, the feed port is rectangular and located in the middle of the upper cover, connected to the washed tobacco stem solid-liquid separation equipment. The liquid inlet is connected to the first-stage extraction solvent storage device through a pipeline, and is used to add the first-stage extraction solvent to the storage body.

[0016] More preferably, a liquid inlet valve is provided on the pipeline connected to the liquid inlet. Furthermore, the first hopper and the second hopper are both square cone shaped with upper and lower openings, and the top openings of the first hopper and the second hopper are larger than the bottom openings.

[0017] Furthermore, the specific connection relationship between the first hopper, the second hopper and the upper warehouse body is: the left end of the second hopper is connected to the right end of the first hopper; the left end of the top of the first hopper is connected to the left side wall of the upper warehouse body, and the right end of the top of the second hopper is connected to the right side wall of the upper warehouse body.

[0018] Further preferably, the upper bin body is integrally formed with the first hopper and the second hopper.

[0019] Further preferably, the volume of the upper bin body is two-thirds of the total volume of the storage body, and the sum of the volumes of the first hopper and the second hopper is one-third of the total volume of the storage body.

[0020] Further preferably, in order to facilitate observation of the specific material conditions in the storage body, the side wall of the upper warehouse body is also provided with a manhole and a transparent observation window.

[0021] Furthermore, the openings of the first discharge pipe and the second discharge pipe are both square, the first discharge valve and the second discharge valve are both pneumatic gate valves, the first discharge pipe is connected to the first-stage extraction device for subsequent processing of tobacco stems through the first discharge valve; the second discharge pipe is connected to the first-stage extraction device for subsequent processing of tobacco stems through the second discharge valve.

[0022] Furthermore, the first discharge valve and the second discharge valve both include a pneumatic rod and a cylinder, and the pneumatic rod can move inside the first discharge valve and the second discharge valve to realize the opening or closing of the first discharge valve and the second discharge valve; the first discharge valve and the second discharge valve can both adopt the pneumatic gate valve equipment commonly used in the prior art, and its structure is not the inventive point of the present invention, so it will not be repeated.

[0023] Furthermore, there are four supporting legs, wherein the top ends of two supporting legs are connected to the side wall of the first hopper, and the top ends of the other two supporting legs are connected to the side wall of the second hopper.

[0024] Further preferably, in order to improve the overall structural stability, a connecting rod is provided between two adjacent legs.

[0025] Further preferably, a weighing sensor is provided at the bottom end of each leg for measuring the weight of batches of washed tobacco stems.

[0026] Furthermore, the first loosening and stirring mechanism includes a first bulk material roller arranged in the upper part of the upper silo body, and two first bulk material rollers are provided. The two first bulk material rollers are arranged side by side front and back, and the two first bulk material rollers extend left and right in the horizontal direction. The right ends of the two first bulk material rollers are rotatably connected to the right side wall of the upper silo body, and the left ends of the two first bulk material rollers are rotatably connected to the left side wall of the upper silo body, and the left ends of the two first bulk material rollers extend out of the upper silo body. The left ends of the two first bulk material rollers extending out of the upper silo body are provided with a first motor; a plurality of bulk material rings are provided along the circumference of the outer circumference of the first bulk material rollers;

[0027] The first bulk roller is mainly used to break up and move the washed tobacco stems when they enter the upper silo, so as to prevent the materials from piling up into a cone shape in the silo, and to achieve the first level of loosening and stirring during the storage process of the washed tobacco stems.

[0028] Furthermore, the second loosening and stirring mechanism includes a second stirring roller arranged at the lower inner part of the upper warehouse body, and the second stirring roller is provided with one, the second stirring roller extends left and right in the horizontal direction, the right end of the second stirring roller is rotatably connected to the right side wall of the upper warehouse body, the left end of the second stirring roller is rotatably connected to the left side wall of the upper warehouse body, and the left end of the second stirring roller extends out of the upper warehouse body, and the left end of the second stirring roller extends out of the upper warehouse body, and the left end of the second stirring roller extending out of the upper warehouse body is provided with a second motor; the outer periphery of the second stirring roller is provided with a plurality of rows of bulk material palladium nails along the circumferential direction, so as to realize the second level of loosening and stirring processing during the storage process of the washed tobacco stems.

[0029] Furthermore, the third loosening stirring mechanism includes two third discharging stirring rollers respectively arranged in the first hopper and the second hopper, the two third discharging stirring rollers are arranged in parallel, and the extension direction of the two third discharging stirring rollers is perpendicular to the extension direction of the second stirring rollers, so as to ensure that the material is stirred and loosened in all directions inside the hopper body, and the two third discharging stirring rollers extend back and forth in the horizontal direction;

[0030] The rear ends of the two third discharging stirring rollers are rotatably connected to the rear side walls of the first hopper and the second hopper respectively, the front ends of the two third discharging stirring rollers are rotatably connected to the front side walls of the first hopper and the second hopper respectively, and the front ends of the two third discharging stirring rollers extend out of the first hopper and the second hopper respectively, and the shaft ends on the front sides of the two third discharging stirring rollers are each provided with a third motor;

[0031] A number of palladium nails for discharging loose materials are provided along the circumference of the two third discharging stirring rollers, which are used for stirring and loosening the washed tobacco stems during storage and discharging, to prevent the materials from being compacted and bridging at the openings of the first discharging pipe and the second discharging pipe, and to ensure smooth material discharging. The two third discharging stirring rollers realize the third-level loosening and stirring processing of the tobacco stem storage device.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The tobacco stem storage device for the papermaking method reconstituted tobacco leaf production process of the present invention can achieve all-round loosening and stirring of the washed tobacco stem material by arranging a three-stage loosening and stirring mechanism in the upper bin body, thereby preventing the washed tobacco stems from expanding and compacting during storage and becoming difficult to discharge, and giving full play to the buffering effect of the tobacco stem storage device on the washed tobacco stems, so that the time for feeding the same batch of washed tobacco stems to the first-stage leaching device is reduced from the original (40-50) minutes to within 5 minutes, ensuring the consistency of the leaching time of the same batch of washed tobacco stems in the first-stage leaching process, improving the leaching effect of the effective components in the tobacco stems, and thus improving the quality of the tobacco stems in the papermaking method reconstituted tobacco leaf production process.

[0034] The intermittent feeding and discharging method of the tobacco stem storage device of the present invention can realize the periodic temporary storage of tobacco stems, ensuring smooth extraction and discharging.

[0035] The tobacco stem storage device of the present invention has a simple structure, high reliability, is easy to operate, and has good process adaptability and promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 4 is a front view of the tobacco stem storage device in the papermaking method reconstituted tobacco production process described in Example 1;

[0037] Figure 2 yes Figure 1 Left view of;

[0038] Among them: 1. Upper warehouse body, 11. Upper cover, 12. Feed port, 13. Liquid inlet, 21. First hopper, 22. Second hopper, 211. First discharge pipe, 212. First discharge valve, 221. Second discharge pipe, 222. Second discharge valve, 3. Support legs, 31. Weighing sensor, 41. First bulk roller, 42. First motor, 51. Second stirring roller, 52. Second motor, 61. Third discharge stirring roller, 62. Third motor. DETAILED DESCRIPTION

[0039] To facilitate understanding of the present invention, the following will provide a more comprehensive and detailed description of the present invention in conjunction with the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0040] Unless otherwise defined, all technical terms used hereinafter have the same meanings as those generally understood by those skilled in the art. The technical terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0041] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0042] Example 1

[0043] like Figure 1-2 As shown, a tobacco stem storage device for a papermaking method reconstituted tobacco leaf production process is provided between a tobacco stem solid-liquid separation device and a first-stage leaching device, and includes a storage body and a first loosening stirring mechanism, a second loosening stirring mechanism, and a third loosening stirring mechanism provided in the storage body;

[0044] The storage body includes a rectangular upper storage body 1, and a first hopper 21 and a second hopper 22 provided at the bottom end of the upper storage body 1;

[0045] The top of the upper storage body 1 is open, and an upper cover 11 is provided on the top of the upper storage body 1. The upper cover 11 is detachably connected to the top of the upper storage body 1 (specifically, threaded holes can be provided on the upper cover 11 and the upper storage body 1, and bolts can be inserted into the threaded holes to achieve detachable connection). The upper cover 11 is provided with a feed port 12 and a liquid inlet 13; wherein the feed port 12 is rectangular and located in the middle of the upper cover 11, opposite to the washed tobacco stem solid-liquid separation device, and the liquid inlet 13 is connected to the first-stage leaching solvent storage device through a pipeline, and is used to add the first-stage leaching solvent to the storage body; preferably, a liquid inlet valve is provided on the pipeline connected to the liquid inlet 13; at the same time, a level meter can also be provided in the storage body, which is used to measure the liquid level in the storage body when the first-stage leaching solvent is added to the storage body after the batch of washed tobacco stems is discharged;

[0046] like Figure 1 As shown, the first hopper 21 and the second hopper 22 are both in the shape of a square cone with upper and lower openings, and the top openings of the first hopper 21 and the second hopper 22 are larger than the bottom openings;

[0047] The first hopper 21 and the second hopper 22 are symmetrically arranged side by side at the bottom end of the upper silo body 1; the specific connection relationship is: the left end of the second hopper 22 is connected to the right end of the first hopper 21; the top left end of the first hopper 21 is connected to the left side wall of the upper silo body 1, and the top right end of the second hopper 22 is connected to the right side wall of the upper silo body 1. In this embodiment, the upper silo body 1 and the first hopper 21 and the second hopper 22 are integrally formed;

[0048] The volume of the upper bin body 1 is two-thirds of the total volume of the storage body, and the sum of the volumes of the first hopper 21 and the second hopper 22 is one-third of the total volume of the storage body;

[0049] Preferably, in order to facilitate observation of the specific material conditions in the storage body, the side wall of the upper warehouse body 1 is further provided with a manhole and a transparent observation window.

[0050] A first discharge pipe 211 extending vertically is provided below the first hopper 21; a first discharge valve 212 is provided at the bottom end of the first discharge pipe 211;

[0051] A second discharge pipe 221 extending vertically is provided below the second hopper 22 ; a second discharge valve 222 is provided at the bottom end of the second discharge pipe 221 .

[0052] The openings of the first discharge pipe 211 and the second discharge pipe 221 are both square, and the first discharge valve 212 and the second discharge valve 222 are both pneumatic gate valves. The first discharge pipe 211 is connected to the first-stage extraction device for subsequent processing of tobacco stems through the first discharge valve 212; the second discharge pipe 221 is connected to the first-stage extraction device for subsequent processing of tobacco stems through the second discharge valve 222.

[0053] The first discharge valve 212 and the second discharge valve 222 both include a pneumatic rod and a cylinder. The pneumatic rod can move inside the first discharge valve 212 and the second discharge valve 222 to open or close the first discharge valve 212 and the second discharge valve 222. During the operation of the tobacco stem storage device, the cylinder drives the pneumatic rod to move inside the first discharge valve 212 or the second discharge valve 222 to open or close the first discharge valve 212 and the second discharge valve 222. In this embodiment, the first discharge valve 212 and the second discharge valve 222 can both adopt the pneumatic gate valve equipment commonly used in the prior art, and its structure is not the inventive point of the present invention, so it will not be repeated.

[0054] The bottom of the storage body is further provided with a support leg 3. Specifically, there are four support legs 3, of which the tops of two support legs 3 are connected to the side walls of the first hopper 21, and the tops of the other two support legs 3 are connected to the side walls of the second hopper 22. Furthermore, in order to improve the overall structural stability, a connecting rod is provided between two adjacent support legs 3.

[0055] Further preferably, a weighing sensor 31 is provided at the bottom end of each support leg 3 for measuring the weight of the washed tobacco stems in batches. When the washed tobacco stems in batches enter and exit the tobacco stem storage device, the weight signal output by the weighing sensor is summarized by the junction box and transmitted to the weighing display instrument and the subsequent DCS system. The weighing display instrument displays the current material weight. The weighing sensor 31 in the present invention adopts conventional equipment in the prior art, and the connection method between the weighing sensor 31 and the weighing display instrument and the subsequent DCS system adopts the conventional setting in the prior art, and is not the inventive point of the present invention, so it will not be repeated.

[0056] The tobacco stem storage device includes three-stage loosening and stirring devices to achieve all-round loosening of materials, namely, a first loosening and stirring mechanism, a second loosening and stirring mechanism, and a third loosening and stirring mechanism arranged in the storage body;

[0057] The first loosening and stirring mechanism includes a first bulk material roller 41 provided at the upper inner portion of the upper silo body 1. In this embodiment, two first bulk material rollers 41 are provided, and the two first bulk material rollers 41 are arranged side by side front and back, and the two first bulk material rollers 41 extend left and right in the horizontal direction. The right ends of the two first bulk material rollers 41 are rotatably connected to the right side wall of the upper silo body 1, and the left ends of the two first bulk material rollers 41 are rotatably connected to the left side wall of the upper silo body 1, and the left ends of the two first bulk material rollers 41 extend outside the upper silo body 1. The left ends of the two first bulk material rollers 41 extending outside the upper silo body 1 are provided with a first motor 42; a plurality of bulk material rings are provided circumferentially on the outer periphery of the first bulk material rollers 41;

[0058] The first scattering roller 41 is mainly used to scatter and move the washed tobacco stems when they enter the upper silo body 1, so as to prevent the materials from piling up into a cone shape in the silo, thereby realizing the first level of loosening and stirring during the storage process of the washed tobacco stems.

[0059] The second loosening and stirring mechanism includes a second stirring roller 51 arranged at the lower inner part of the upper warehouse body 1. In this embodiment, the second stirring roller 51 is equipped with one, and the second stirring roller 51 extends left and right in the horizontal direction. The right end of the second stirring roller 51 is rotatably connected to the right side wall of the upper warehouse body 1, and the left end of the second stirring roller 51 is rotatably connected to the left side wall of the upper warehouse body 1, and the left end of the second stirring roller 51 extends out of the upper warehouse body 1. The left end of the second stirring roller 51 extending out of the upper warehouse body 1 is provided with a second motor 52; the outer periphery of the second stirring roller 51 is provided with a plurality of rows of bulk material palladium nails along the circumferential direction to realize the second level of loosening and stirring processing during the storage process of the washed tobacco stems.

[0060] The third loosening stirring mechanism includes two third discharging stirring rollers 61 respectively arranged in the first hopper 21 and the second hopper 22. The two third discharging stirring rollers 61 are arranged in parallel, and the extension direction of the two third discharging stirring rollers 61 is perpendicular to the extension direction of the second stirring roller 51, ensuring that the material is stirred and loosened in all directions inside the hopper body. Specifically, in this embodiment, the two third discharging stirring rollers 61 extend back and forth in the horizontal direction;

[0061] The rear ends of the two third discharging stirring rollers 61 are rotatably connected to the rear side walls of the first hopper 21 and the second hopper 22, respectively. The front ends of the two third discharging stirring rollers 61 are rotatably connected to the front side walls of the first hopper 21 and the second hopper 22, respectively. The front ends of the two third discharging stirring rollers 61 extend out of the first hopper 21 and the second hopper 22, respectively. A third motor 62 is provided at the front shaft ends of the two third discharging stirring rollers 61.

[0062] The outer periphery of the two third discharging stirring rollers 61 is provided with a number of palladium nails for discharging loose materials along the circumferential direction, which are used for stirring and loosening the washed tobacco stems during storage and discharging, to prevent the materials from being compacted and bridging at the openings of the first discharging pipe 211 and the second discharging pipe 221, and to ensure smooth material discharging. The two third discharging stirring rollers 61 realize the third-level loosening and stirring processing of the tobacco stem storage device.

[0063] Preferably, in the tobacco stem storage device, the upper cover 11 and the remaining parts in contact with the material are made of 304 stainless steel.

[0064] The operating principle of the present invention is:

[0065] The tobacco stems are washed before entering the extraction section. After washing, the tobacco stems are sent to the solid-liquid separation equipment for processing. Then, they are sent to the tobacco stem storage device of the papermaking method reconstituted tobacco production process of the present invention for temporary storage. They are then fed to the first-stage extraction equipment in batches in an intermittent manner. The specific process is as follows:

[0066] After the tobacco stems are processed by the solid-liquid separation equipment, the first discharge valve 212 and the second discharge valve 222 are closed, and the tobacco stems enter the storage body from the feed port 12. At this time, the first motor 42, the second motor 52, and the third motor 62 are turned on to drive the first bulking roller 41, the second stirring roller 51, and the third discharge stirring roller 61 to rotate. The first bulking roller 41, the second stirring roller 51, and the third discharge stirring roller 61 are used to loosen and stir the tobacco stems, and at the same time, the tobacco stems are temporarily stored.

[0067] When the first-stage extraction device meets the feeding conditions, the first discharge valve 212 and the second discharge valve 222 are opened, and the washed tobacco stems in the storage body enter the first-stage extraction device through the first discharge pipe 211 and the second discharge pipe 221. At this time, the weighing sensor 31 measures and transmits the weight of the washed tobacco stems in the storage body in real time. When the weight of the washed tobacco stems in the storage body is ≤50kg, the first discharge valve 212 and the second discharge valve 222 are closed, and at the same time, the liquid inlet valve on the pipeline connected to the liquid inlet 13 is opened, and a certain amount of first-stage extraction solvent is added to the tobacco stem storage device from the liquid inlet 13. When the liquid level in the storage body reaches 100%, the first discharge valve 212 and the second discharge valve 222 are opened, and the first-stage extraction solvent and the residual tobacco stems enter the first-stage extraction device together through the first discharge pipe 211 and the second discharge pipe 221 to ensure complete discharge and no residue.

[0068] The present invention realizes periodic temporary storage of tobacco stems by periodically opening and closing the liquid inlet 13, the first discharge valve 212 and the second discharge valve 222.

[0069] In order to improve the overall automation level of the device, the liquid inlet valve, the first bulking roller 41, the second stirring roller 51, the third discharging stirring roller 61, the first discharging valve 212 and the second discharging valve 222 in the tobacco stem storage device can all be automatically controlled by the DCS system.

[0070] The tobacco stem storage device for the papermaking method reconstituted tobacco leaf production process of the present invention can achieve all-round loosening and stirring of the tobacco stem material by arranging a three-level loosening and stirring mechanism in the upper storage body 1, thereby preventing the washed tobacco stems from expanding and compacting during storage and becoming difficult to discharge. The present invention gives full play to the buffering effect of the tobacco stem storage device on the washed tobacco stems, thereby greatly shortening the time for feeding the same batch of washed tobacco stems to the first-level extraction device, ensuring the consistency of the extraction time of the same batch of washed tobacco stems in the first-level extraction process, improving the extraction effect of the effective components in the tobacco stems, and thus improving the quality of the tobacco stems in the papermaking method reconstituted tobacco leaf production process.

[0071] The intermittent feeding and discharging method of the tobacco stem storage device of the present invention can realize the periodic temporary storage of tobacco stems, ensuring smooth extraction and discharging.

[0072] The tobacco stem storage device of the present invention has a simple structure, high reliability, is easy to operate, and has good process adaptability and promotion significance.

[0073] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0074] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0075] Finally, it should be noted that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the specific embodiments described herein and may include numerous other effective embodiments without departing from the spirit of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. A tobacco stem storage device for a papermaking process of reconstituted tobacco, characterized in that: The tobacco stem storage device is arranged between the tobacco stem solid-liquid separation device and the first-stage leaching device, and includes a storage body and a first loosening stirring mechanism, a second loosening stirring mechanism and a third loosening stirring mechanism arranged in the storage body; The storage body includes a rectangular upper storage body, and a first hopper and a second hopper arranged at the bottom end of the upper storage body; An upper cover is provided on the top of the upper bin body, which is detachably connected to the top of the upper bin body and has a feed inlet and a liquid inlet. The first hopper and the second hopper are symmetrically arranged side by side at the bottom end of the upper bin body; A first discharge pipe extending vertically is provided below the first hopper; a first discharge valve is provided at the bottom end of the first discharge pipe; A second discharge pipe extending vertically is provided below the second hopper; a second discharge valve is provided at the bottom end of the second discharge pipe; The bottom end of the storage body is also provided with a support leg; The first hopper and the second hopper are both in the shape of a square cone with upper and lower openings, and the top openings of the first hopper and the second hopper are larger than the bottom openings; The left end of the second hopper is connected to the right end of the first hopper; the left end of the top of the first hopper is connected to the left side wall of the upper silo body, and the right end of the top of the second hopper is connected to the right side wall of the upper silo body; A weighing sensor is provided at the bottom end of the leg; The first loosening and stirring mechanism includes a first bulk material roller arranged in the upper part of the upper bin body, and two first bulk material rollers are provided. The left ends of the two first bulk material rollers extend out of the upper bin body, and the left ends of the two first bulk material rollers extending out of the upper bin body are provided with a first motor; The second loose stirring mechanism includes a second stirring roller arranged at the lower part of the upper chamber body, the second stirring roller is provided with a left end of the second stirring roller extending out of the upper chamber body, and a second motor is provided at the shaft end of the second stirring roller extending out of the upper chamber body on the left side; The third loose stirring mechanism includes two third discharging stirring rollers respectively arranged in the first hopper and the second hopper, the front ends of the two third discharging stirring rollers respectively extending out of the first hopper and the second hopper, and the shaft ends of the front sides of the two third discharging stirring rollers are each provided with a third motor; The tobacco stems are washed before entering the extraction section, and then sent to a solid-liquid separation device for processing. Thereafter, the washed tobacco stems are sent to a tobacco stem storage device for temporary storage in the papermaking method reconstituted tobacco production process, and then fed to the first-stage extraction device in batches in an intermittent manner. The tobacco stem storage device in the papermaking method reconstituted tobacco production process, during operation, After the tobacco stems are processed by the solid-liquid separation equipment, the first discharge valve and the second discharge valve are closed, and the tobacco stems enter the storage body from the feed port. At this time, the first motor, the second motor and the third motor are turned on to drive the first bulking roller, the second stirring roller and the third discharge stirring roller to rotate. The tobacco stems are loosened and stirred by the first bulking roller, the second stirring roller and the third discharge stirring roller, and the tobacco stems are temporarily stored at the same time. When the first-stage extraction device meets the feeding conditions, the first discharge valve and the second discharge valve are opened, and the washed tobacco stems in the storage body enter the first-stage extraction device through the first discharge pipe and the second discharge pipe. At this time, the weighing sensor measures and transmits the weight of the washed tobacco stems in the storage body in real time. When the weight of the washed tobacco stems in the storage body is ≤50kg, the first discharge valve and the second discharge valve are closed, and at the same time, the liquid inlet valve on the pipeline connected to the liquid inlet is opened, and a certain amount of first-stage extraction solvent is added to the tobacco stem storage device from the liquid inlet. When the liquid level in the storage body reaches 100%, the first discharge valve and the second discharge valve are opened, and the first-stage extraction solvent and the residual tobacco stems enter the first-stage extraction device through the first discharge pipe and the second discharge pipe, ensuring that the discharge is complete and there is no residue. The tobacco stems are periodically temporarily stored by periodically opening and closing the liquid inlet, the first discharge valve and the second discharge valve.

2. The tobacco stem storage device for the papermaking process of reconstituted tobacco according to claim 1, characterized in that: The upper bin body is integrally formed with the first hopper and the second hopper.

3. The tobacco stem storage device for the papermaking process of reconstituted tobacco according to claim 1, characterized in that: The openings of the first discharge pipe and the second discharge pipe are both square, and the first discharge valve and the second discharge valve are both pneumatic gate valves.

4. The tobacco stem storage device for the papermaking process of reconstituted tobacco according to claim 1, characterized in that: The feed port is rectangular and located in the middle of the upper cover, opposite to the washed tobacco stem solid-liquid separation equipment. The liquid inlet is connected to the first-stage extraction solvent storage device through a pipeline, and is used to add the first-stage extraction solvent to the storage body.

5. The tobacco stem storage device for the papermaking process of reconstituted tobacco according to claim 1, characterized in that: A liquid inlet valve is provided on the pipeline connected to the liquid inlet.

6. The tobacco stem storage device for the papermaking process of reconstituted tobacco according to claim 1, characterized in that: The volume of the upper bin is two-thirds of the total volume of the storage body, and the sum of the volumes of the first hopper and the second hopper is one-third of the total volume of the storage body.

7. The tobacco stem storage device for the papermaking process of reconstituted tobacco according to claim 1, characterized in that: The two first bulk material rollers are arranged side by side front and back, and the two first bulk material rollers extend left and right in the horizontal direction. The right ends of the two first bulk material rollers are rotatably connected to the right side wall of the upper warehouse body, and the left ends of the two first bulk material rollers are rotatably connected to the left side wall of the upper warehouse body; a plurality of bulk material rings are provided along the circumference of the outer periphery of the first bulk material rollers.

8. The tobacco stem storage device for the papermaking process of reconstituted tobacco according to claim 1, characterized in that: The second stirring roller extends horizontally to the left and right, the right end of the second stirring roller is rotatably connected to the right side wall of the upper warehouse body, and the left end of the second stirring roller is rotatably connected to the left side wall of the upper warehouse body; a plurality of palladium nails for rowing bulk materials are provided circumferentially on the outer periphery of the second stirring roller.

9. The tobacco stem storage device for the papermaking process of reconstituted tobacco according to claim 1, characterized in that: The two third discharging stirring rollers are arranged in parallel, and the extension direction of the two third discharging stirring rollers is perpendicular to the extension direction of the second stirring roller, and the two third discharging stirring rollers extend back and forth in the horizontal direction; The rear ends of the two third discharging stirring rollers are rotatably connected to the rear side walls of the first hopper and the second hopper respectively, and the front ends of the two third discharging stirring rollers are rotatably connected to the front side walls of the first hopper and the second hopper respectively; a number of palladium nails for discharging bulk materials are provided along the circumference of the outer periphery of the two third discharging stirring rollers.

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