Vacuum moisture conditioning pre-flow stabilizing device and stabilizing method thereof

Abstract

The present application belongs to the technical field of tobacco processing, and provides a vacuum moisture conditioning pre-flow stabilizing device and a stabilizing method thereof. The device comprises an inclined guide frame, a pre-screening mechanism for dividing tobacco into first loose tobacco and second tobacco cakes, an in-gauge cylinder screen mechanism comprising a rotatable screen cylinder and a dynamic processing assembly arranged in the screen cylinder, the dynamic processing assembly being used for heating and disturbing the tobacco while the screen cylinder rotates, a multi-stage crushing mechanism comprising a primary splitting assembly and a secondary crushing assembly connected in sequence along the material conveying direction, the primary splitting assembly being used for performing telescopic splitting on the tobacco cakes, and the secondary crushing assembly being used for performing swing-type grinding and crushing on the tobacco cakes, and a flow collecting assembly for collecting and discharging the processed tobacco. The present application can effectively solve the flow fluctuation problem caused by the disturbance of the tobacco cakes, significantly improve the pre-processing efficiency and processing stability of the vacuum moisture conditioning, and provide high-quality raw material guarantee for subsequent processes.

Description

Technical Field

[0001] This application relates to the field of tobacco processing technology, and in particular to a vacuum rehumidification pre-flow stabilization device and its stabilization method. Background Technology

[0002] In tobacco processing, vacuum rehumidification is a crucial pre-processing step that determines the quality of subsequent tobacco leaf processing. It controls temperature and humidity to allow the tobacco leaves to fully absorb moisture and soften, improving their resilience for subsequent mechanical handling. However, due to differences in tobacco leaf origin, grade, and physical properties, some tobacco leaves do not achieve sufficient moisture reabsorption after vacuum rehumidification. This results in incomplete loosening during the loosening and stacking process, forming denser and harder tobacco cakes. When these tobacco cakes enter the subsequent loosening and rehumidification process along with the loosened leaves, they significantly interfere with the stability of material flow and frequency converter stability, thereby negatively impacting the processing quality of subsequent steps such as leaf moistening, feeding, and shredding.

[0003] When material containing tobacco cakes passes through the weighing area of ​​the electronic belt scale, the density of the tobacco cakes is much higher than that of loose leaves, causing the scale's reading to spike abnormally. To maintain a balanced material flow, the control system needs to frequently adjust the belt speed via a frequency converter: reducing the speed when the tobacco cakes pass through and then rapidly increasing it afterward, resulting in periodic fluctuations in the material flow. This instability directly affects the processing efficiency of the loose leaf rehumidifier, potentially leading to uneven tobacco leaf wetting, energy consumption fluctuations, and equipment malfunctions. This, in turn, has a chain reaction of negative impacts on the processing quality of subsequent leaf wetting, feeding, and shredding processes.

[0004] Currently, the screening process for tobacco cakes in this industry is installed at the outlet of the loosening and rehumidifying machine or at the front end of the foreign matter removal machine. This post-screening design can only adjust the flow rate of the material entering the leaf moistening and feeding process, and cannot remove tobacco cakes before the loosening and rehumidifying process, resulting in the flow rate fluctuation problem in this process not being fundamentally solved.

[0005] Currently, various devices exist for breaking up tobacco cakes, but none can effectively solve the aforementioned problems. For example, patent CN218650230U discloses a tobacco cake breaking up device, including a base with an adjustment seat on one side and a hinge seat on the other; a breaking up cylinder positioned above the base, with rotating shafts on both sides, and a stirring rod and a breaking up ring inside; two rotating sleeves positioned on the base and connected to the breaking up cylinder via rotating shafts, the rotating sleeves including a first rotating sleeve and a second rotating sleeve, the first rotating sleeve having a connecting rod connected to a stirring motor, the output shaft of the stirring motor being connected to one end of the stirring rod, the second rotating sleeve having a receiving rod, the end of the stirring rod away from the stirring motor being connected to the receiving rod; and a drive assembly positioned on one side of the base for driving the breaking up cylinder to rotate. This tobacco cake dispersing device ensures thorough mixing of the tobacco cake within the dispersing cylinder through dispersing teeth and a dispersing rod. The screening holes discharge fine debris, and the recovery separation tank facilitates cleaning of this debris. However, this device cannot stably control the flow rate of materials entering the device and cannot guarantee the efficiency of screening loose tobacco. Furthermore, the device directly receives the mixed tobacco material (including loose tobacco and tobacco cake) without first separating the two, resulting in loose tobacco and tobacco cake entering the dispersing cylinder together. This increases the dispersing load and fails to address the specific processing of the two materials, leaving the root cause of flow rate fluctuations unresolved.

[0006] With the increasing demands for refined tobacco processing, there is an urgent need to develop a pre-treatment device that can separate tobacco cakes before the loosening and rehydration process, thereby stabilizing the material flow into the loosening and rehydration machine from the source and improving the overall quality and production efficiency of tobacco processing. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a pre-flow stabilization device and method for vacuum rehumidification, which can effectively solve the flow fluctuation problem caused by smoke cake interference, significantly improve the efficiency and processing stability of vacuum rehumidification pretreatment, and provide a guarantee of high-quality raw materials for subsequent processes.

[0008] To achieve the above and related objectives, the present invention adopts the following technical solution:

[0009] The first aspect of this invention provides a vacuum rehumidification pre-flow stabilization device, comprising:

[0010] Inclined guide frame;

[0011] The pre-screening mechanism, set on the inclined guide frame, is used to separate the tobacco shreds into the first loose tobacco shreds and the second tobacco cake;

[0012] The inner drum screen mechanism is set on the inclined guide frame and located on the first loose tobacco conveying path. It includes a rotatable screening drum and a dynamic processing component set inside the screening drum. The dynamic processing component is used to heat and agitate the tobacco while the screening drum rotates.

[0013] The multi-stage crushing mechanism is set on the inclined guide frame and located on the second smoke cake conveying path. It includes a primary splitting component and a secondary crushing component connected sequentially along the material conveying direction. The primary splitting component is used to perform telescopic splitting of the smoke cake, and the secondary crushing component is used to perform oscillating grinding and crushing of the smoke cake.

[0014] The confluence assembly is located below the discharge end of the inner drum screen mechanism and the multi-stage crushing mechanism, and is used to collect and discharge the processed tobacco shreds.

[0015] Furthermore, the inner cylinder screen mechanism also includes a first driving component, a transmission rod, and a support; the first driving component is fixed to the inclined guide frame, one end of the transmission rod is connected to the output end of the first driving component, and the other end extends into the inside of the screening cylinder; the screening cylinder is fixedly connected to the transmission rod through the support, and is driven by the transmission rod to rotate around its own axis.

[0016] Furthermore, the dynamic processing component includes a curved heating element and a reciprocating control element. The curved heating element is arranged along the axial direction of the screening cylinder and is fixed to the transmission rod by a connecting element, rotating synchronously with the transmission rod.

[0017] The reciprocating control component is installed outside the screening cylinder, and its output end is connected to a movable ring frame. The movable ring frame is sleeved on the outside of the screening cylinder and moves axially reciprocally under the drive of the reciprocating control component.

[0018] Furthermore, the multi-stage crushing mechanism includes a guiding and conveying assembly, which includes a guide table and a conveyor belt disposed thereon; the guide table is disposed on an inclined guide frame, and the conveyor belt is used to receive the second batch of smoke cakes and convey them to the primary splitting assembly.

[0019] Furthermore, the guiding and conveying assembly also includes a flow restrictor and a fixed frame. The fixed frame spans above the conveyor belt, and the flow restrictor is vertically connected to the fixed frame for periodically descending to block or release the smoke pellets.

[0020] Furthermore, the primary splitting assembly is a matrix splitting assembly, including a rack, a second drive unit, and multiple splitting rods arranged in an array; the second drive unit is installed in the rack and connected to each splitting rod, and is used to drive the splitting rods to perform telescopic movement along an axis perpendicular to the conveyor belt conveying direction.

[0021] Furthermore, the secondary crushing assembly is a swing dismantling assembly, including a silo, a third drive unit, and a swing arm; the third drive unit is installed on one side of the silo, one end of the swing arm is connected to the output end of the third drive unit, and the other end is respectively hinged to the upper gear and the lower gear.

[0022] The upper and lower gears are arranged opposite each other to form a crushing channel, and under the drive of the third drive unit, they make oscillating movements in opposite directions or alternately.

[0023] Furthermore, a flow-limiting screen frame is provided at the bottom of the silo, and the aperture of the flow-limiting screen frame is smaller than the aperture of the screen of the pre-screening mechanism.

[0024] Furthermore, the pre-screening mechanism includes a pre-screen embedded inside the inclined guide frame, and the pre-screen is a movable screen structure that can be pulled out and replaced.

[0025] A second aspect of the present invention provides a method for stabilizing flow rate before vacuum rehumidification, wherein the flow rate is stabilized using the aforementioned vacuum rehumidification pre-flow stabilization device, and the method includes the following steps:

[0026] The tobacco shreds are pre-screened by the equipment's pre-screening mechanism to separate the first batch of loose tobacco shreds and the second batch of tobacco cakes.

[0027] The first loose tobacco shreds are introduced into the inner drum screen mechanism, and the screen drum is driven to rotate to screen the tobacco shreds. At the same time, the tobacco shreds are simultaneously heated and disturbed by the dynamic processing components set in the screen drum.

[0028] The second smoke cake is fed into a multi-stage crushing mechanism, where it is split into two parts by a primary splitting component and then ground and crushed by a secondary crushing component.

[0029] The tobacco shreds that have been screened by the inner cylindrical screen mechanism and the tobacco shreds that have been crushed by the multi-stage crushing mechanism are collected into the confluence assembly and then uniformly discharged to the next process through the confluence assembly.

[0030] The beneficial technical effects of this invention are as follows:

[0031] This invention effectively solves the problem of flow fluctuation caused by tobacco cake interference through a composite screening and dynamic processing mechanism, reducing the risk of equipment blockage; heating and screening simultaneously improve the quality of tobacco leaves and inhibit mold growth; multi-level intelligent control achieves dynamic flow balance, significantly improving the efficiency and processing stability of vacuum rehumidification pretreatment, and providing a guarantee of high-quality raw materials for subsequent processes.

[0032] This invention separates tobacco shreds into loose tobacco shreds and tobacco cakes through a pre-screening mechanism, and then processes the two materials separately: the loose tobacco shreds are screened and upgraded by an inner cylindrical screen mechanism and then directly discharged, while the tobacco cakes are flexibly crushed into qualified tobacco shreds by a multi-stage crushing mechanism and then discharged. Simultaneously, the flow-limiting element in the guiding conveyor assembly can periodically control the flow rate of tobacco cakes entering the crushing mechanism, avoiding overload or idling, ultimately achieving a uniform and stable flow rate of tobacco shreds entering the confluence assembly. This solves the problems of uneven rehydration and energy waste caused by fluctuations in the feed flow rate during the vacuum rehydration process.

[0033] In this invention, the rotating screening cylinder of the inner drum screen mechanism operates synchronously with the dynamic processing components: the curved heating element rotates with the transmission rod, dynamically baking the tobacco; the movable ring frame reciprocates along the axial direction of the screening cylinder, disturbing the tobacco to prevent it from sticking or clogging the screen holes. This invention, through a dynamic processing mechanism that simultaneously screens and improves quality, not only enhances screening efficiency but also optimizes the physical properties of the tobacco, significantly outperforming the traditional separate screening and subsequent heating process.

[0034] This invention's multi-stage crushing mechanism employs a two-stage flexible crushing process: telescopic splitting and oscillating grinding. The matrix-type splitting rods of the primary splitting component insert into the tobacco cake via telescopic movement, initially splitting large pieces of the tobacco cake. The upper and lower toothed frames of the secondary crushing component oscillate alternately, grinding the split tobacco cake. Compared to traditional hammer or compression-type rigid crushing, this multi-stage flexible crushing method significantly reduces tobacco damage while preventing large pieces of tobacco cake from jamming the equipment, thus improving crushing efficiency and material adaptability.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0036] The accompanying drawings, incorporated in and forming part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. In the drawings:

[0037] Figure 1 This is a schematic diagram of the internal structure of the vacuum rehumidification pre-flow stabilization device of this application;

[0038] Figure 2 This is a schematic diagram of the external structure of the vacuum rehumidification pre-flow stabilization device in this application;

[0039] Figure 3 This is a top view of the vacuum rehumidification pre-flow stabilization device of this application.

[0040] Figure 4This is a schematic diagram of the guiding and conveying component structure of this application;

[0041] Figure 5 This is a schematic diagram of the internal cylindrical screen mechanism in this application;

[0042] Figure 6 for Figure 1 A partial structural diagram at point A;

[0043] Figure 7 for Figure 1 Schematic diagram of the partial structure at point B.

[0044] Figure Labels

[0045] 1: Inclined guide frame; 2: Converging assembly; 3: Inner cylinder screen mechanism; 4: Multi-stage crushing mechanism; 5: Guide conveying assembly; 6: Matrix dismantling assembly; 7: Swinging dismantling assembly; 8: Outer shell; 101: Pre-screening screen; 201: First connecting frame plate; 202: Second connecting frame plate; 203: Through slot frame; 204: Third connecting frame plate; 205: Guide plate; 301: First driving component; 302: Connecting shaft seat; 303: Transmission rod; 304: Support; 305: Screening cylinder; 306: Cross connecting frame; 30 7: Curved heating element; 308: Fixed ring frame; 309: Reciprocating control element; 310: Movable ring frame; 501: Guide table; 502: Fixed frame; 503: Flow limiting element; 504: Conveyor belt; 601: Silo; 602: Second drive element; 603: Connecting seat; 604: Elastic element; 605: Central platform; 606: Splitting rod; 607: Connecting rod; 701: Silo; 702: Third drive element; 703: Swing arm rod; 704: Upper gear frame; 705: Lower gear frame; 706: Flow limiting screen frame. Detailed Implementation

[0046] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should be understood that certain features of the invention (described in the context of separate embodiments for clarity) may also be provided in a single embodiment. Conversely, multiple features of the invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or, where appropriate, in any other described embodiment of the invention. Certain features described in the context of various embodiments will not be considered essential features of those embodiments unless the embodiment is inoperable without those elements. The invention is further illustrated below by specific examples; however, it should be noted that the specific process conditions and results described in the embodiments of the invention are merely illustrative and should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be covered within the scope of protection of the invention.

[0047] like Figure 1 and Figure 2 As shown, this application provides a vacuum rehumidification pre-flow stabilization device, comprising: an inclined guide frame 1; a pre-screening mechanism, disposed on the inclined guide frame 1, for dividing tobacco shreds into a first path of loose tobacco shreds and a second path of tobacco cake; an inner cylindrical screen mechanism 3, disposed on the inclined guide frame 1 and located on the conveying path of the first path of loose tobacco shreds, including a rotatable screening cylinder 305 and a dynamic processing component disposed within the screening cylinder 305, the dynamic processing component being used to heat and agitate the tobacco shreds while the screening cylinder 305 rotates; a multi-stage crushing mechanism 4, disposed on the inclined guide frame 1 and located on the conveying path of the second path of tobacco cake, including a primary splitting component and a secondary crushing component sequentially connected along the material conveying direction, the primary splitting component being used to perform telescopic splitting of the tobacco cake, and the secondary crushing component being used to perform oscillating grinding and crushing of the tobacco cake; and a confluence component 2, disposed below the discharge end of the inner cylindrical screen mechanism 3 and the multi-stage crushing mechanism 4, for collecting and discharging the processed tobacco shreds.

[0048] Furthermore, such as Figure 3As shown, the pre-screening mechanism of this application includes a pre-screen 101 embedded inside the inclined guide frame 1. The pre-screen 101 is a movable screen structure that can be pulled out and replaced. This application can flexibly adjust the screen according to different tobacco processing needs. After being processed by the loosening and unloading machine, the tobacco shreds first pass through the pre-screen 101 for initial screening. Because the loose leaves are small in size, they pass through the pre-screen 101 under the action of gravity, forming the first path of loose tobacco shreds, which fall into the inner cylindrical screen mechanism 3 below for further screening. However, because the tobacco cake is large in size, it cannot pass through the pre-screen 101 and slides down the surface of the inclined guide frame 1 onto the multi-stage crushing mechanism 4. The tobacco cake is split in a compound manner by the primary splitting component and the secondary crushing component. After splitting, the tobacco shreds are guided to the collecting component through the guide plate 205.

[0049] Furthermore, such as Figures 1 to 3 As shown, the gathering assembly of this application is used for the directional gathering and conveying of tobacco shreds. It includes a first connecting frame plate 201, which is connected to the bottom side of the inclined guide frame 1; a second connecting frame plate 202, which is connected to the side of the bottom of the inclined guide frame 1 away from the first connecting frame plate 201; a through-slot frame 203, which is connected to the interior of the second connecting frame plate 202; a third connecting frame plate 204, which is connected to the bottom side of the guide platform 501 assembly; and a guide plate 205, which is connected to the through-slot frame 203 on one side and to the third connecting frame plate 204 on the other side.

[0050] Furthermore, the split tobacco shreds are guided by the guide plate 205 and flow through the through slot frame 203 into the middle of the first connecting frame plate 201 and the second connecting frame plate 202.

[0051] Furthermore, such as Figures 1 to 5 As shown, the inner cylinder screen mechanism 3 of this application also includes a first driving member 301, a transmission rod 303, and a bracket 304; the first driving member 301 is fixed to the inclined guide frame 1, one end of the transmission rod 303 is connected to the output end of the first driving member 301, and the other end extends into the inside of the screening cylinder 305; the screening cylinder 305 is fixedly connected to the transmission rod 303 through the bracket 304, and is driven by the transmission rod 303 to rotate around its own axis. Preferably, the inner drum screen mechanism 3 of this application is used for secondary screening of compliant tobacco shreds. The first driving component 301 is connected to the second connecting frame plate 202, and the first driving component 301 is an electric shaft seat. It also includes a connecting shaft seat 302, which is connected to the first connecting frame plate 201. One end of the transmission rod 303 is connected to the first driving component 301, and the other end is connected to the connecting shaft seat 302. There are several supports 304 in this application, and several supports 304 are connected to the transmission rod 303. The screening drum 305 is fixedly connected to the connecting shaft seat 302 and is sleeved on the outside of the transmission rod 303. It is fixedly connected to the ends of several supports 304 away from the transmission rod 303.

[0052] Furthermore, such as Figures 1 to 5 As shown, the dynamic processing component of this application includes a curved heating element 307 and a reciprocating control element 309. The curved heating element 307 is arranged along the axial direction of the screening cylinder 305 and is fixed to the transmission rod 303 by a connecting member, rotating synchronously with the transmission rod 303. The reciprocating control element 309 is installed outside the screening cylinder 305, and its output end is connected to a movable ring frame 310. The movable ring frame 310 is sleeved on the outside of the screening cylinder 305 and reciprocates along the axial direction under the drive of the reciprocating control element 309. Preferably, the connecting member of this application is a plurality of cross connecting frames 306. The plurality of cross connecting frames 306 are connected to the transmission rod 303, and the plurality of curved heating elements 307 are connected to the side of the cross connecting frames 306 away from the transmission rod 303. In this application, the curved heating element 307 is a nickel-plated stainless steel curved plate with embedded resistance wire. The dynamic processing component of this application also includes a fixed ring frame 308, which is fixedly connected to the external casing of the screening cylinder 305. A reciprocating control component 309 is connected to the fixed ring frame 308, and the reciprocating control component 309 is an electric telescopic rod.

[0053] Furthermore, the first driving component 301 of this application is not limited to an electric shaft seat; it can also be driven by a linear motor, electric cylinder, or pneumatic cylinder, etc., as long as it can achieve the rotational adjustment of the transmission rod 303. No specific limitation is made here.

[0054] Furthermore, the reciprocating control component 309 of this application is not limited to an electric telescopic rod. It can also be driven by a linear motor, electric cylinder, or pneumatic cylinder, etc., as long as it can realize the movement and adjustment of the movable ring frame 310. No specific limitation is made here.

[0055] Furthermore, such as Figure 2As shown, this application has an outer shell 8 installed on the outside of the first connecting frame plate 201, the second connecting frame plate 202, and the third connecting frame plate 204. When the first driving member 301 is running, it can drive the transmission rod 303 to rotate synchronously. In conjunction with several supports 304, it drives the sieving cylinder 305 to rotate axially synchronously. Most of the tobacco shreds that have passed the initial screening by the pre-screening screen 101 are guided to the surface of the rotating sieving cylinder 305. The rotating sieving cylinder 305 can further screen out similar strip-shaped and stem-like impurities in the initially screened tobacco shreds, leaving the strip-shaped and stem-like impurities inside the sieving cylinder 305, thereby reducing the fault tolerance of the pre-screening screen 101. The tobacco shreds that have passed the sieving cylinder 305 are guided from the inside out through the screen holes of the sieving cylinder 305 and fall into the bin formed by the first connecting frame plate 201, the second connecting frame plate 202, and the outer shell 8. Under the action of gravity, they are directionally discharged to the next process. Simultaneously, when the transmission rod 303 rotates, several cross-shaped connecting frames 306 can drive the curved heating element 307 to rotate inside the screening cylinder 305. The curved heating element 307 can moderately bake the leaves, further evenly distributing the moisture in the leaves, reducing the toughness and stickiness of the leaves, and allowing small leaves that might otherwise stick together to be separated better, improving screening efficiency and quality, and reducing the problem of incomplete screening caused by leaf sticking. At the same time, heating at a suitable temperature helps to stimulate the aroma substances inside the tobacco leaves, allowing the tobacco leaves to release a richer aroma during subsequent processing. The heating process can also inhibit the growth and reproduction of microorganisms to a certain extent, reducing the risk of tobacco leaf mold and ensuring the stability of tobacco leaf quality.

[0056] Furthermore, when the guided tobacco material is screened, the reciprocating control component 309 operates, which can drive the movable ring frame 310 to move back and forth along the outside of the screening cylinder 305, preventing the tobacco material from not entering the screening cylinder 305 due to its different shape, thereby improving the screening efficiency of the screening cylinder 305.

[0057] Furthermore, such as Figures 1 to 4 As shown, the multi-stage crushing mechanism 4 of this application includes a guiding and conveying assembly 5, which is used for guiding and controlling the flow of tobacco shreds. The guiding and conveying assembly 5 includes a guide platform 501 and a conveyor belt 504 disposed thereon. The guide platform 501 is disposed on the inclined guide frame 1, and the conveyor belt 504 is used to receive the second batch of tobacco cakes and convey them to the primary splitting assembly. The guiding and conveying assembly 5 also includes a flow restrictor 503 and a fixing frame 502. The fixing frame 502 spans above the conveyor belt 504, and the flow restrictor 503 is vertically and vertically connected to the fixing frame 502 for periodically descending to block or release the tobacco cakes. Preferably, the fixing frame 502 is connected to the top side of the guide platform 501, and the flow restrictor 503 is an electrically operated telescopic plate.

[0058] Furthermore, tobacco cakes (i.e., cake-shaped tobacco materials) that do not pass through the pre-screen 101 are guided down to the guide table 501 via the inclined guide frame 1. The conveyor belt 504 can horizontally convey the guided tobacco cakes from one side of the fixed frame 502 to the side of the swing dismantling assembly 7. The flow restrictor 503 set at the front end of the guide table 501 can control the flow of the passing tobacco cakes according to the actual flow requirements to prevent the flow of the guided tobacco cakes from being overloaded, which would cause the subsequent matrix dismantling assembly 6 and swing dismantling assembly 7 to be unable to handle the excessive amount of tobacco cakes and cause a shutdown failure. When the flow restrictor 503 of this application is controlling the flow, the electric telescopic plate can be periodically retracted to limit the actual amount of tobacco cakes passing through the fixed frame 502. The electric telescopic plate and the conveyor belt 504 start and stop synchronously in the same period, and there is a certain time interval between each start and stop cycle of the electric telescopic plate and the conveyor belt 504.

[0059] Furthermore, such as Figures 1 to 6 As shown, the primary splitting component of this application is a matrix splitting component 6, including a rack 601, a second drive unit 602, and multiple splitting rods 606 arranged in an array. The second drive unit 602 is installed inside the rack 601 and is connected to each splitting rod 606, used to drive the splitting rods 606 to perform telescopic movement along an axis perpendicular to the conveying direction of the conveyor belt 504. Preferably, the rack 601 is connected to the top side of the guide table 501, and the second drive unit 602 is connected to the top side of the rack 601. The plurality of second drive units 602 are selected as electric telescopic frames. It also includes a connecting seat 603, which is connected to the bottom of the second driving member 602; a plurality of elastic members 604, which are connected to the connecting seat 603, and the elastic members 604 are selected as elastic shaft seats; a central platform 605, which is connected to the side of the connecting seat 603 away from the second driving member 602; a splitting rod 606, which is rotatably connected to the elastic members 604; and a connecting rod 607, one end of which is movably connected to the central platform 605 and the other end of which is movably connected to the splitting rod 606.

[0060] Furthermore, the second driving component 602 of this application is not limited to an electric telescopic frame. It can also be driven by a linear motor, electric cylinder, or pneumatic cylinder, etc., as long as it can realize the longitudinal reciprocating adjustment of the central platform 605. No specific limitation is made here.

[0061] Furthermore, when the tobacco cake driven by the conveyor belt 504 moves to the bottom of the rack 601, during the interval between each start and stop cycle of the electric telescopic plate and the conveyor belt 504, several second driving components 602 can drive the connecting seat 603 to reciprocate longitudinally a certain distance. In conjunction with several elastic components 604, several splitting rods 606 can be deployed and retracted. When the several splitting rods 606 are deployed, they can be inserted into the tobacco cake to achieve the splitting of the large tobacco cakes in the batch. Several sets of second driving components 602 and splitting rods 606 are arranged crosswise so that they do not affect each other when different splitting rods 606 are deployed and retracted.

[0062] Furthermore, such as Figure 1 , Figure 4 and Figure 7 As shown, the secondary crushing component of this application is a swing disassembly component 7, including a silo 701, a third drive component 702, and a swing arm 703. The third drive component 702 is installed on one side of the silo 701. One end of the swing arm 703 is connected to the output end of the third drive component 702, and the other end is hinged to an upper gear frame 704 and a lower gear frame 705 respectively. The upper gear frame 704 and the lower gear frame 705 are arranged opposite each other to form a crushing channel, and swing in opposite directions or alternately under the drive of the third drive component 702. Preferably, the silo 701 is connected through to the guide table 501, and the third drive component 702 is connected to the top side inside the silo 701. The third drive component 702 is an electric shaft seat. The bottom of the silo 701 is also provided with a flow-limiting screen frame 706, and the aperture of the flow-limiting screen frame 706 is smaller than the aperture of the screen of the pre-screening mechanism.

[0063] Furthermore, the third drive component 702 of this application is not limited to an electric shaft seat; it can also be driven by a linear motor, electric cylinder, or pneumatic cylinder, etc., as long as it can realize the swing adjustment of the swing arm 703. No specific limitation is made here.

[0064] Furthermore, the front end of the silo 701 in this application is provided with a slot. The tobacco cake, initially split by the matrix disassembly component 6, is guided into the silo 701 by the conveyor belt 504 through the slot. When the third drive component 702 runs, in conjunction with the swing arm 703, it can drive the upper gear frame 704 to swing axially back and forth. The teeth of the upper gear frame 704 and the teeth of the lower gear frame 705 can mesh with each other. The reciprocating upper gear frame 704 can drive the tobacco cake to move at the bottom inside the silo 701, and the tobacco cake is split a second time by the periodically interlocking teeth. After multiple splits, the qualified tobacco material is discharged through the flow-limiting screen frame 706 to the bottom guide plate 205, and then flows through the through slot frame 203 to the middle of the first connecting frame plate 201 and the second connecting frame plate 202.

[0065] The present invention also provides a method for stabilizing flow rate before vacuum rehumidification, wherein the above-mentioned vacuum rehumidification pre-flow stabilization device is used to stabilize the flow rate, and the method includes the following steps:

[0066] The tobacco shreds are pre-screened by the equipment's pre-screening mechanism to separate the first batch of loose tobacco shreds and the second batch of tobacco cakes.

[0067] The first loose tobacco shreds are introduced into the inner drum screen mechanism, and the screen drum is driven to rotate to screen the tobacco shreds. At the same time, the tobacco shreds are simultaneously heated and disturbed by the dynamic processing components set in the screen drum.

[0068] The second smoke cake is fed into a multi-stage crushing mechanism, where it is split into two parts by a primary splitting component and then ground and crushed by a secondary crushing component.

[0069] The tobacco shreds that have been screened by the inner cylindrical screen mechanism and the tobacco shreds that have been crushed by the multi-stage crushing mechanism are collected into the confluence assembly and then uniformly discharged to the next process through the confluence assembly.

[0070] Furthermore, the tobacco shreds processed by the loosening and stacking machine of this application are guided to the inclined guide frame, and initially screened by the embedded pre-screening screen. The loose leaves fall into the inner cylinder screen mechanism, and the tobacco cake slides along the inclined guide frame to the guide table assembly. The guide table, together with the conveyor belt, transports the tobacco cake. After the flow rate is controlled by the flow limiting component, it is split twice by the matrix disassembly assembly and the swing disassembly assembly. The matrix and swing dual disassembly assembly realizes the flexible crushing of the tobacco cake. The qualified tobacco shreds are collected by the guide plate, and the tobacco shreds that pass the initial screening enter the rotating screening cylinder. The curved heating element bakes them simultaneously, and the qualified tobacco shreds are directionally discharged.

[0071] Furthermore, this application, through the aforementioned composite screening and dynamic processing mechanism, can effectively solve the problem of flow fluctuation caused by tobacco cake interference and reduce the risk of equipment blockage; heating and screening simultaneously improve the quality of tobacco leaves and inhibit mold growth; multi-level intelligent control achieves dynamic flow balance, significantly improving the efficiency and processing stability of vacuum rehumidification pretreatment, and providing a guarantee of high-quality raw materials for subsequent processes.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A vacuum rehumidification pre-flow stabilization device, characterized in that, include: Inclined guide frame (1); A pre-screening mechanism is set on the inclined guide frame (1) and is used to divide the tobacco shreds into a first loose tobacco shred and a second tobacco cake; The inner drum screen mechanism (3) is set on the inclined guide frame (1) and located on the first loose tobacco conveying path. It includes a rotatable screening drum (305) and a dynamic processing component set in the screening drum (305). The dynamic processing component is used to heat and disturb the tobacco while the screening drum (305) rotates. A multi-stage crushing mechanism (4) is set on the inclined guide frame (1) and located on the second smoke cake conveying path. It includes a primary splitting component and a secondary crushing component connected sequentially along the material conveying direction. The primary splitting component is used to perform telescopic splitting of the smoke cake, and the secondary crushing component is used to perform oscillating grinding and crushing of the smoke cake. The confluence component (2) is located below the discharge end of the inner cylindrical screen mechanism (3) and the multi-stage crushing mechanism (4) and is used to collect and discharge the processed tobacco shreds.

2. The device according to claim 1, characterized in that, The inner cylinder screen mechanism (3) further includes a first driving member (301), a transmission rod (303), and a bracket (304); the first driving member (301) is fixed to the inclined guide frame (1), one end of the transmission rod (303) is connected to the output end of the first driving member (301), and the other end extends into the inside of the screening cylinder (305); the screening cylinder (305) is fixedly connected to the transmission rod (303) through the bracket (304), and is driven by the transmission rod (303) to rotate around its own axis.

3. The device according to claim 2, characterized in that, The dynamic processing component includes a curved heating element (307) and a reciprocating control element (309). The curved heating element (307) is arranged along the axial direction of the sieve cylinder (305) and is fixed to the transmission rod (303) by a connecting member, and rotates synchronously with the transmission rod (303). The reciprocating control component (309) is installed outside the sieving cylinder (305), and its output end is connected to a movable ring frame (310). The movable ring frame (310) is sleeved on the outside of the sieving cylinder (305) and reciprocates along the axial direction under the drive of the reciprocating control component (309).

4. The device according to claim 1, characterized in that, The multi-stage crushing mechanism (4) includes a guiding and conveying assembly (5), which includes a guide platform (501) and a conveyor belt (504) disposed thereon. The guide platform (501) is disposed on the inclined guide frame (1), and the conveyor belt (504) is used to receive the second smoke cake and convey it to the primary splitting assembly.

5. The device according to claim 4, characterized in that, The guiding and conveying assembly (5) also includes a flow restrictor (503) and a fixing frame (502). The fixing frame (502) is positioned above the conveyor belt (504). The flow restrictor (503) is vertically connected to the fixing frame (502) and is used to periodically descend to block or release the smoke pellets.

6. The device according to claim 4, characterized in that, The primary splitting component is a matrix splitting component (6), which includes a rack (601), a second drive unit (602), and multiple splitting rods (606) arranged in an array. The second drive unit (602) is installed in the rack (601) and is connected to each of the splitting rods (606) respectively, for driving the splitting rods (606) to perform telescopic movement along an axis perpendicular to the conveying direction of the conveyor belt (504).

7. The device according to claim 6, characterized in that, The secondary crushing assembly is a swing dismantling assembly (7), which includes a silo (701), a third drive unit (702), and a swing arm (703). The third drive unit (702) is installed on one side of the silo (701), and one end of the swing arm (703) is connected to the output end of the third drive unit (702), while the other end is respectively hinged to an upper gear frame (704) and a lower gear frame (705). The upper gear (704) and the lower gear (705) are arranged opposite to each other to form a crushing channel, and swing in opposite directions or alternately under the drive of the third driving member (702).

8. The device according to claim 7, characterized in that, The bottom of the silo (701) is also provided with a flow-limiting screen frame (706), the aperture of which is smaller than the aperture of the pre-screening mechanism.

9. The device according to claim 1, characterized in that, The pre-screening mechanism includes a pre-screen (101) embedded inside the inclined guide frame (1), and the pre-screen (101) is a movable screen structure that can be pulled out and replaced.

10. A method for stabilizing the pre-flow rate of vacuum rehumidification, characterized in that, Flow stabilization is performed using the vacuum rehumidification pre-flow stabilization device as described in any one of claims 1 to 9, the method comprising the following steps: The pre-screening mechanism of the equipment performs preliminary screening of the tobacco shreds, separating the first batch of loose tobacco shreds and the second batch of tobacco cakes. The first loose tobacco shreds are introduced into the inner drum screen mechanism, and the screen drum is driven to rotate to screen the tobacco shreds. At the same time as the rotation, the tobacco shreds are simultaneously heated and disturbed by the dynamic processing component set in the screen drum. The second smoke cake is fed into a multi-stage crushing mechanism, where it is split into two parts by a primary splitting component and then ground and crushed by a secondary crushing component. The tobacco shreds sieved by the inner cylindrical screen mechanism and the tobacco shreds crushed by the multi-stage crushing mechanism are collected into the confluence assembly and then uniformly discharged to the next process via the confluence assembly.

Images