A tobacco flavor substance extraction apparatus and method

Abstract

The present application relates to the technical field of tobacco processing, and particularly relates to a tobacco flavor substance extraction device and method. The device comprises an extraction barrel, a grinding assembly, a scraping assembly and a stirring assembly arranged in the extraction barrel. The grinding assembly comprises a grinding disc, a crushing wheel and a driving unit. The grinding disc is fixed in the extraction barrel. The driving unit comprises a motor, a driving gear, a driven gear and a rotating shaft. The motor is installed on the top of the extraction barrel. The scraping assembly comprises a scraper and an elastic force applying structure. The scraper is connected with the rotating shaft through the elastic force applying structure, and the scraper is in contact with the surface of the grinding disc. The stirring assembly comprises a support frame and a stirring member. The support frame is fixed on the lower part of the rotating shaft, and the stirring member is installed on the support frame. The present application solves the problem of low extraction efficiency caused by insufficient crushing and grinding in the prior art, and shortens the extraction time and improves the extraction efficiency per unit time.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing technology, and in particular to an apparatus and method for extracting tobacco aroma substances. Background Technology

[0002] In the tobacco processing industry, the extraction of tobacco aroma compounds is a crucial step affecting the aroma quality of the final product. Common extraction devices typically employ solvent immersion or rinsing methods to bring the extractant into contact with the tobacco raw material, dissolving the aroma components. These devices generally include basic components such as an extraction container, a feed inlet, an extractant inlet, and a discharge outlet. During operation, the tobacco raw material is placed in the container, and an extractant such as ethanol is added for immersion or circulating spraying, allowing the aroma compounds to transfer into the extract.

[0003] An existing technology discloses an extraction device for extracting nicotine and tobacco aroma substances from tobacco stems. The device includes an extraction tower, one end of which is connected to an evaporator via a first pipeline, and the other end of which is connected to a separator via a second pipeline. During operation, the tobacco raw material comes into contact with the extractant inside the extraction tower. The extracted mixture then enters the separator for separation. The extracted aroma substances and nicotine can be used in the production of tobacco sheets.

[0004] The device can meet basic extraction requirements, but in actual use, its grinding capacity is weak, and the tobacco raw materials are often not fully ground, resulting in large particles. Larger tobacco particles have a relatively smaller contact area with the extractant, requiring aroma compounds to diffuse from the inside of the particles into the extractant. Larger particles increase the diffusion path length, slowing down the dissolution rate of aroma compounds, thus prolonging the overall extraction time and reducing the extraction efficiency per unit time. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a tobacco aroma substance extraction device and method that can improve the pulverization effect of tobacco raw materials and increase extraction efficiency.

[0006] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions: In a first aspect, embodiments of the present invention provide a tobacco aroma substance extraction device, including an extraction barrel and a grinding assembly, a scraping assembly, and a stirring assembly disposed within the extraction barrel; the grinding assembly includes a grinding disc, a pulverizing wheel, and a drive unit, the grinding disc being fixed inside the extraction barrel, the drive unit including a motor, a driving gear, a driven gear, and a rotating shaft, the motor being mounted on the top of the extraction barrel, the driving gear being connected to the output shaft of the motor, the driven gear meshing with the driving gear and being fixedly sleeved on the rotating shaft, and the pulverizing wheel being mounted on the rotating shaft and located above the grinding disc; the scraping assembly includes a scraper and an elastic force-applying structure, the scraper being connected to the rotating shaft through the elastic force-applying structure, and the scraper contacting the surface of the grinding disc; the stirring assembly includes a support frame and an agitator, the support frame being fixed to the lower part of the rotating shaft, and the agitator being mounted on the support frame.

[0007] As a further technical solution, the grinding assembly also includes a rotating frame, a rotating wheel, and a circular hollow plate. The circular hollow plate is fixed to the vertical inner wall of the extraction tank, the rotating wheel is rotatably installed inside the circular hollow plate, the rotating frame is connected between the rotating wheel and the rotating shaft, and the grinding wheel is rotatably installed on the outer periphery of the rotating frame. A conical guide plate is fixed to the top of the circular hollow plate, an extraction liquid feed pipe is connected to the outer periphery of the extraction tank, and a discharge hopper is connected to the bottom of the extraction tank.

[0008] As a further technical solution, the elastic force-applying structure includes a fixed plate, a hollow column, a first spring, and a sliding column. The fixed plate is fixed to the rotating shaft, the hollow column is connected to the bottom of the fixed plate, the first spring is disposed inside the hollow column, the upper end of the sliding column is connected to the first spring, and the lower end of the sliding column extends out of the hollow column and is fitted with the scraper.

[0009] As a further technical solution, the hollow column has sliding grooves on both sides, a movable disk is fixed on the sliding column, and guide posts are provided at both ends of the movable disk. The guide posts are slidably engaged in the sliding grooves. The upper end of the first spring is connected to the fixed plate, and the lower end of the first spring is connected to the movable disk.

[0010] As a further technical solution, the agitator includes an inclined plate and an agitator plate, the inclined plate being fixedly installed on the support frame, and the agitator plate being oscillatingly connected to the support frame.

[0011] As a further technical solution, the support frame is provided with a rotating groove, a second spring is connected in the rotating groove, a rotating column is rotatably connected in the rotating groove, and the rotating column is connected to the stirring plate through a connecting column. The stirring plate can generate a reciprocating motion with an angular offset under the action of the second spring.

[0012] As a further technical solution, a guide bucket is installed on the vertical inner wall of the extraction tank, the guide bucket is located below the grinding disc, and a heating plate is provided on the outer periphery of the guide bucket.

[0013] As a further technical solution, a conical slide plate and a circular protective plate are connected below the grinding disc. The circular protective plate is located on the outer periphery of the conical slide plate and is connected to the inner wall of the extraction tank by a crossbar.

[0014] As a further technical solution, the top of the extraction tank is provided with a feed hopper and a protective cover, the upper end of the rotating shaft is rotatably installed inside the protective cover, and a conical protective plate is also fixed on the rotating shaft, the conical protective plate being located above the driven gear.

[0015] Secondly, embodiments of the present invention also provide an extraction method based on the aforementioned tobacco aroma substance extraction device, comprising the following steps: Add the tobacco raw materials to the grinding disc; The motor is started, and the rotating shaft is driven to rotate through the drive gear and the driven gear. The rotating shaft drives the crushing wheel to rotate, which grinds the tobacco raw materials on the grinding disc. The rotating shaft drives the scraper to rotate, and the scraper maintains contact with the surface of the grinding disc under the action of the elastic force-applying structure, scraping the material towards the grinding area; The ground material falls to the bottom of the extraction tank; Add the extractant to the bottom of the extraction tank through the extractant feed pipe; The rotating shaft drives the support frame and the agitator to rotate, and the agitator agitates the mixture of extract and tobacco raw materials. After extraction is complete, the extract is discharged through the discharge hopper.

[0016] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: The device of this invention forms a relatively rotating grinding pair by setting up a grinding disc, a crushing wheel, and a drive unit, which can thoroughly crush tobacco raw materials into fine particles. Specifically, the crushing wheel is mounted on a rotating shaft and located above the grinding disc. When the rotating shaft drives the crushing wheel to rotate, the squeezing and shearing action between the crushing wheel and the grinding disc significantly reduces the particle size of the raw material. At the same time, the scraper in the scraping assembly is always in contact with the surface of the grinding disc under the action of the elastic force application structure, promptly scraping away the ground material to prevent the material from accumulating on the grinding disc and affecting the subsequent grinding effect, ensuring a continuously efficient grinding process. The stirring assembly agitates the mixture at the bottom of the extraction tank, keeping the fine particles suspended in the extractant and preventing sedimentation, further shortening the diffusion distance of aroma substances. Grinding, scraping, and stirring work synergistically: grinding provides small particles, scraping ensures grinding efficiency, and stirring accelerates dissolution. Therefore, this device effectively solves the problem of low extraction efficiency caused by insufficient crushing and grinding in the prior art, achieving a reduction in extraction time and an increase in extraction efficiency per unit time.

[0017] Advantages of additional aspects of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, the dimensions or spacing between the components are exaggerated to show the position of each component, and the schematic diagrams are for illustrative purposes only.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a vertical sectional view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the internal structure of the present invention; Figure 5 This is an internal sectional view of the present invention; Figure 6 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 7 For the present invention Figure 5 Enlarged view of point B in the middle; Figure 8 For the present invention Figure 5 Enlarged view of point C in the middle.

[0020] In the diagram: 1. Extraction tank; 101. Support leg; 102. Top cover; 103. Feed hopper; 104. Protective cover; 105. Extraction liquid feed pipe; 106. Discharge hopper; 2. Circular hollow plate; 201. Rotating frame; 202. Rotating wheel; 203. Rotating shaft; 204. Crushing wheel; 205. Driven gear; 206. Driving gear; 207. Motor; 208. Conical protective plate; 209. Conical guide plate; 3. Fixing plate; 301. Hollow column; 302. First spring; 303. Moving disc; 304. Slide groove; 305. Guide column; 306. Sliding column; 307. Scraper; 4. Grinding disc; 401. Circular protective plate; 402. Crossbar; 403. Conical sliding plate; 5. Support frame; 501. Inclined plate; 502. Rotating groove; 503. Second spring; 504. Rotating column; 505. Connecting column; 506. Stirring plate; 507. Rotating plate; 508. Guide hopper; 509. Heating disc; Detailed Implementation To more clearly illustrate the technical solutions of the embodiments in this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this specification. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the linguistic context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0021] Generally speaking, the terms "comprising" and "including" only indicate that the steps and elements are explicitly identified, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements.

[0022] Example 1 In one typical embodiment of this disclosure, a tobacco aroma substance extraction apparatus is provided to solve the problem of low extraction efficiency caused by insufficient grinding capacity in existing apparatuses. This apparatus is suitable for the tobacco processing field, particularly for the pretreatment and extraction process of aroma substances in tobacco raw materials.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a tobacco aroma substance extraction device includes an extraction tank 1 and a grinding assembly, a scraping assembly, and a stirring assembly disposed within the extraction tank 1. The grinding assembly includes a grinding disc 4, a grinding wheel 204, and a drive unit. The grinding disc 4 is fixed inside the extraction tank 1. The drive unit includes a motor 207, a driving gear 206, a driven gear 205, and a rotating shaft 203. The motor 207 is mounted on the top of the extraction tank 1. The driving gear 206 is connected to the output shaft of the motor 207, and the driven gear 205 is connected to the output shaft of the motor 207. The drive gear 206 is meshed and fixedly sleeved on the rotating shaft 203. The crushing wheel 204 is installed on the rotating shaft 203 and located above the grinding disc 4. The scraping assembly includes a scraper 307 and an elastic force-applying structure. The scraper 307 is connected to the rotating shaft 203 through the elastic force-applying structure, and the scraper 307 is in contact with the surface of the grinding disc 4. The stirring assembly includes a support frame 5 and an agitator. The support frame 5 is fixed to the lower part of the rotating shaft 203, and the agitator is installed on the support frame 5.

[0024] Extraction tank 1 serves as a single container, holding tobacco raw materials and extractant while preventing spillage. Grinding disc 4 is fixed inside extraction tank 1, its surface serving as the grinding working surface. In the drive unit, motor 207 is the power source; drive gear 206 meshes with driven gear 205 to achieve speed reduction or power transmission, and rotating shaft 203 transmits power downwards. Crushing wheel 204 is mounted on rotating shaft 203 and located above grinding disc 4. When rotating shaft 203 rotates, crushing wheel 204 moves relative to grinding disc 4, grinding the tobacco raw materials located between them. The scraping assembly uses an elastic force-applying structure to press scraper 307 against the surface of grinding disc 4. Driven by rotating shaft 203, scraper 307 scrapes the material on grinding disc 4, preventing material accumulation and promoting uniform material distribution. The support frame 5 in the stirring assembly rotates with rotating shaft 203, driving agitators to stir the mixture at the bottom of extraction tank 1.

[0025] The aforementioned structure integrates grinding, scraping, and stirring functions, all using the same drive unit, reducing the need for additional power sources. Compared to existing technologies, the combination of the grinding disc 4 and the pulverizing wheel 204 can pulverize tobacco raw materials more finely, increasing the contact area with the extractant and shortening the diffusion path of aroma substances; the scraper 307 cleans the surface of the grinding disc 4 in a timely manner, preventing material blockage; and the stirring component accelerates the dissolution of aroma substances in the extractant. The synergistic effect of these three components improves the extraction efficiency per unit time.

[0026] like Figure 6As shown in a further specific example of this disclosure, the grinding assembly further includes a rotating frame 201, a rotating wheel 202, and a circular hollow plate 2. The circular hollow plate 2 is fixed to the vertical inner wall of the extraction tank 1. The rotating wheel 202 is rotatably installed inside the circular hollow plate 2. The rotating frame 201 is connected between the rotating wheel 202 and the rotating shaft 203. The crushing wheel 204 is rotatably installed on the outer periphery of the rotating frame 201. A conical guide plate 209 is fixed to the top of the circular hollow plate 2. An extraction liquid feed pipe 105 is connected to the outer periphery of the extraction tank 1. A discharge hopper 106 is connected to the bottom of the extraction tank 1.

[0027] A circular hollow plate 2 provides a circular track along which the rotating wheel 202 rolls. The rotating frame 201 rotates with the rotating shaft 203, driving the rotating wheel 202. The grinding wheel 204 is mounted on the outer circumference of the rotating frame 201. The grinding wheel 204 rotates itself while revolving with the rotating frame 201, forming a planetary grinding motion, which improves the uniformity and efficiency of grinding. A conical guide plate 209 guides the tobacco raw material added by the feed hopper 103 to the central area of ​​the grinding disc 4, preventing the raw material from scattering. The extract feed pipe 105 is used to add extractants such as ethanol, and the discharge hopper 106 is used to discharge the extracted mixture. This structure, in conjunction with the grinding assembly, further optimizes the material flow direction.

[0028] In some other specific examples of this disclosure, the elastic force-applying structure includes a fixed plate 3, a hollow column 301, a first spring 302, and a sliding column 306. The fixed plate 3 is fixed to the rotating shaft 203. The hollow column 301 is connected to the bottom of the fixed plate 3. The first spring 302 is disposed inside the hollow column 301. The upper end of the sliding column 306 is connected to the first spring 302. The lower end of the sliding column 306 extends out of the hollow column 301 and is fitted with the scraper 307.

[0029] The fixed plate 3 rotates with the rotating shaft 203, and the hollow column 301 provides a space for and guides the first spring 302. When the first spring 302 is compressed, it applies a downward thrust to the sliding column 306, ensuring that the scraper 307 remains in close contact with the surface of the grinding disc 4. Even if there are minor unevennesses on the surface of the grinding disc 4 or variations in material thickness, the scraper 307 can adaptively adjust its position to maintain effective contact. This elastic force-applying structure avoids jamming or damage to the grinding disc 4 caused by rigid connections.

[0030] like Figure 7As shown, the hollow column 301 has sliding grooves 304 on both sides, the sliding column 306 has a movable disk 303 fixed on it, the movable disk 303 has guide posts 305 at both ends, the guide posts 305 are slidably engaged in the sliding grooves 304, the upper end of the first spring 302 is connected to the fixed plate 3, and the lower end of the first spring 302 is connected to the movable disk 303.

[0031] By setting the sliding groove 304 and the guide post 305, the sliding post 306 is restricted to move only along the axial direction, preventing circumferential deflection and ensuring the stability of the scraping direction of the scraper 307. The moving disk 303 evenly transmits the force of the first spring 302 to the sliding post 306, while the guide post 305 slides within the sliding groove 304, reducing frictional resistance and keeping the pressure of the scraper 307 on the grinding disk 4 constant, resulting in a more reliable scraping effect.

[0032] like Figure 8 As shown, in some other specific examples of this disclosure, the agitator includes an inclined plate 501 and an agitator 506, the inclined plate 501 being fixedly mounted on the support frame 5, and the agitator 506 being oscillatingly connected to the support frame 5.

[0033] When the inclined plate 501 rotates with the support frame 5, its inclined surface contacts the mixture, generating disturbance and providing initial stirring. The stirring plate 506 can be oscillatingly connected, passively adjusting its angle under the action of liquid resistance, thus enhancing the mixing effect. The combination of the two, compared to a single type of stirring blade, can produce a more complex flow state, which is conducive to the diffusion of aroma substances from the surface of tobacco particles into the extractant.

[0034] In a further specific example of this disclosure, the support frame 5 is provided with a rotating groove 502, a second spring 503 is connected in the rotating groove 502, a rotating column 504 is rotatably connected in the rotating groove 502, the rotating column 504 is connected to the stirring plate 506 through a connecting column 505, and the stirring plate 506 can generate a reciprocating motion with angular displacement under the action of the second spring 503.

[0035] As the agitator 506 rotates with the support frame 5 in the mixture, the liquid exerts resistance on the agitator 506, causing it to deflect around the rotating column 504. The second spring 503 is compressed or stretched as the agitator 506 deflects; when the resistance decreases, the spring's restoring force returns the agitator 506 to its original position. During this process, the agitator 506 oscillates back and forth, similar to gentle stirring, which not only prevents material sedimentation but also reduces excessive breakage of tobacco particles, while simultaneously increasing local turbulence and improving extraction mass transfer efficiency.

[0036] In some other specific examples of this disclosure, a guide bucket 508 is installed on the vertical inner wall of the extraction tank 1, the guide bucket 508 is located below the grinding disc 4, and a heating disc 509 is provided on the outer periphery of the guide bucket 508.

[0037] The guide hopper 508 collects the material that falls to the bottom of the extraction tank 1 after grinding, preventing it from scattering to the edge of the tank wall. A heating plate 509 is positioned around the guide hopper 508 to heat the mixture inside the extraction tank 1. The heating plate 509 can increase the extraction temperature; for example, when using ethanol as the extractant, appropriate heating can improve the solubility and diffusion rate of aroma substances, thereby shortening the extraction time. The heating plate 509 is positioned close to the guide hopper 508, allowing heat to be directly transferred to the mixture, resulting in high thermal efficiency.

[0038] In a further specific example of this disclosure, a conical slide plate 403 and a circular protective plate 401 are connected below the grinding disc 4. The circular protective plate 401 is located on the outer periphery of the conical slide plate 403, and the circular protective plate 401 is connected to the inner wall of the extraction tank 1 through a crossbar 402.

[0039] The conical slide plate 403 allows the properly ground material to slide down to the bottom of the extraction tank 1 by gravity, preventing material from accumulating below the grinding disc 4. A circular protective plate 401 is fixed to the outer periphery of the conical slide plate 403 and connected to the inner wall of the extraction tank 1 via a crossbar 402, serving to support the grinding disc 4 and the conical slide plate 403. This structure ensures the stability of the grinding assembly and utilizes gravity for material transport, eliminating the need for additional power.

[0040] In some other specific examples of this disclosure, the top of the extraction tank 1 is provided with a feed hopper 103 and a protective cover 104, the upper end of the rotating shaft 203 is rotatably mounted inside the protective cover 104, and a conical protective plate 208 is also fixed on the rotating shaft 203, the conical protective plate 208 being located above the driven gear 205.

[0041] The feed hopper 103 is used to feed tobacco raw materials. The protective cover 104 not only serves as a dustproof cover but also provides rotational support for the upper end of the rotating shaft 203, preventing radial displacement of the rotating shaft 203 during high-speed rotation. The conical protective plate 208 is located above the driven gear 205, preventing raw materials falling from the feed hopper 103 from directly impacting the gear, thus avoiding gear damage or jamming. It also prevents dust from falling into the gear meshing area, extending the service life of the transmission components.

[0042] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0043] Specifically, such as Figures 1 to 8The illustrated tobacco aroma substance extraction device includes an extraction tank 1 for preventing spillage during extraction. A circular hollow plate 2 is welded to the vertical inner wall of the extraction tank 1. A rotating wheel 202 is rotatably mounted inside the circular hollow plate 2. A rotating frame 201 is connected to the side of the rotating wheel 202. A crushing wheel 204 is rotatably mounted on the outer periphery of the rotating frame 201. A rotating shaft 203 is welded to the outer periphery of the rotating frame 201. A driven gear 205 is mounted on the outer periphery of the rotating shaft 203. A conical protective plate 208 is mounted on the top of the driven gear 205 for protection. A top cover 102 is mounted on the top of the extraction tank 1. A protective cover 104 is mounted on the top of the top cover 102. The end of the rotating shaft 203 rotates inside the protective cover 104. A motor 207 is mounted on the bottom of the top cover 102. The output shaft of motor 207 is connected to drive gear 206 via a coupling. The outer circumference of drive gear 206 meshes with the outer circumference of driven gear 205. A grinding disc 4 for grinding tobacco flavoring substances is connected to the bottom of the circular hollow plate 2. The raw material of tobacco flavoring substances is added to the grinding disc 4 through the feed hopper 103 and the conical guide plate 209. When motor 207 is turned on, motor 207 drives drive gear 206 and driven gear 205 to rotate. Driven gear 205 drives rotating shaft 203 and conical protective plate 208 to rotate. The end of rotating shaft 203 rotates inside protective cover 104 to prevent rotating shaft 203 from deviating. Rotating shaft 203 drives rotating frame 201 and crushing wheel 204 to rotate. Rotating frame 201 drives rotating wheel 202 to rotate inside circular hollow plate 2. Crushing wheel 204 grinds and crushes tobacco flavoring substances on grinding disc 4.

[0044] A circular protective plate 401 and a conical sliding plate 403 are welded to the bottom of the grinding disc 4. A crossbar 402 is connected to the outer periphery of the circular protective plate 401. The end of the crossbar 402 away from the circular protective plate 401 is connected to the inside of the extraction tank 1. Raw material particles of the correct size enter the bottom of the extraction tank 1 through the grinding disc 4 and the conical sliding plate 403.

[0045] A support frame 5 is welded to the outer periphery of the rotating shaft 203. Four rotating plates 507 are symmetrically installed at the bottom of the support frame 5. A rotating groove 502 is provided inside the support frame 5. A second spring 503 is connected inside the rotating groove 502. A rotating column 504 is rotatably connected inside the rotating groove 502. A connecting column 505 is installed at one end of the rotating column 504. An agitator 506 for stirring the tobacco flavoring raw materials and extract is installed on the outer periphery of the connecting column 505. An inclined plate for stirring is welded inside the support frame 5. Plate 501 and rotating shaft 203 drive support frame 5, inclined plate 501 and stirring plate 506 to rotate. Inclined plate 501 and stirring plate 506 come into contact with tobacco aroma substances and extract, and fully mix the extract with tobacco aroma substances. When stirring plate 506 comes into contact with the mixture of tobacco aroma substances and extract, stirring plate 506 deviates at a certain angle. Second spring 503 limits the amount of deviation of stirring plate 506, which can generate a certain angle of reciprocating motion to stir the mixture and improve stirring and extraction efficiency.

[0046] A fixed plate 3 is welded to the outer periphery of the rotating shaft 203. A hollow column 301 is welded to the bottom of the fixed plate 3. A first spring 302 is connected inside the hollow column 301. One end of the first spring 302 is connected to the bottom of the fixed plate 3, and the other end of the first spring 302 is connected to a movable disk 303. Guide columns 305 are connected to both ends of the movable disk 303. A sliding column 306 is connected to the end of the movable disk 303 away from the first spring 302. A scraper 307 for scraping and cleaning is installed at the end of the sliding column 306 away from the movable disk 303. The two ends of the hollow column 301... A groove 304 is provided on the side for the guide post 305 to slide. The end of the guide post 305 slides inside the groove 304. The rotating shaft 203 drives the fixed plate 3, the hollow post 301 and the sliding post 306 to rotate. The sliding post 306 drives the scraper 307 to rotate. Due to the action of the first spring 302, the first spring 302 squeezes the moving disk 303. The moving disk 303 drives the guide post 305 to move along the inside of the groove 304. The moving disk 303 pushes the scraper 307 to contact the surface of the grinding disk 4. The scraper 307 scrapes the tobacco flavoring substance on the grinding disk 4.

[0047] A conical guide plate 209 for guiding tobacco aroma substances is welded to the top of the circular hollow plate 2. A feed hopper 103 for the tobacco aroma substance raw material is installed on the top of the top cover 102. An extraction liquid feed pipe 105 for the extraction liquid of tobacco aroma substances is connected to the outer periphery of the extraction tank 1. The extraction liquid can be ethanol, a commonly used extractant. Ethanol has good solubility for aroma substances in tobacco and can effectively extract various esters, alcohols, aldehydes and other aroma components. Ethanol has a low boiling point, is easy to recover and reuse, and can be separated from the aroma substances by distillation or other methods after extraction. Moreover, ethanol is relatively safe and has low toxicity, and has wide applications in the food and tobacco industries. The extraction liquid enters the bottom of the extraction tank 1 through the extraction liquid feed pipe 105 and comes into contact with the tobacco aroma substances to extract them.

[0048] The bottom of the extraction tank 1 is connected to a discharge hopper 106 for discharging the extract. The bottom of the extraction tank 1 is equipped with support feet 101 for support. The vertical inner wall of the extraction tank 1 is equipped with a guide hopper 508 for extracting tobacco aroma substances. The outer periphery of the guide hopper 508 is provided with a heating plate 509 for accelerating the extraction of tobacco aroma substances. The heating plate 509 can increase the extraction temperature inside the extraction tank 1. After extraction, the extract can be discharged and collected through the discharge hopper 106.

[0049] In this tobacco aroma substance extraction device, the motor 207 drives the drive gear 206 and the driven gear 205 to rotate. The driven gear 205 drives the rotating shaft 203 and the conical protective plate 208 to rotate. The end of the rotating shaft 203 rotates inside the protective cover 104 to prevent the rotating shaft 203 from deviating. The rotating shaft 203 drives the rotating frame 201 and the grinding wheel 204 to rotate. The rotating frame 201 drives the rotating wheel 202 to rotate inside the circular hollow plate 2. The grinding wheel 204 grinds and pulverizes the tobacco aroma substances on the grinding disc 4. Compared with the traditional tobacco aroma substance extraction device, which has a weaker grinding and pulverizing ability, this structure improves the grinding and pulverizing ability. The tobacco raw material is ground and pulverized more thoroughly, the particles are smaller, the contact area with the extractant is increased, the dissolution rate of the aroma substances is increased, the extraction time is shortened, and the extraction efficiency per unit time is improved.

[0050] In this tobacco aroma extraction device, due to the action of the first spring 302, the first spring 302 squeezes the moving disk 303, the moving disk 303 drives the guide column 305 to move along the inside of the slide groove 304, the moving disk 303 pushes the scraper 307 to contact the surface of the grinding disk 4, and the scraper 307 scrapes the tobacco aroma on the grinding disk 4. This structure improves grinding efficiency and cleaning ability.

[0051] In this tobacco aroma substance extraction device, the inclined plate 501 and the stirring plate 506 are in contact with the tobacco aroma substance and the extract, so that the extract and the tobacco aroma substance are fully mixed. When the stirring plate 506 is in contact with the tobacco aroma substance extract mixture, the stirring plate 506 is offset at a certain angle. The second spring 503 limits the offset of the stirring plate 506, which can generate a certain angle of reciprocating motion to stir the mixture and improve the stirring efficiency.

[0052] Example 2 This embodiment provides an extraction method based on the above-described apparatus, including the following steps: Tobacco raw materials are added to the grinding disc 4; the motor 207 is started, and the rotating shaft 203 is driven to rotate through the drive gear 206 and the driven gear 205. The rotating shaft 203 drives the crushing wheel 204 to rotate, grinding the tobacco raw materials on the grinding disc 4; the rotating shaft 203 drives the scraper 307 to rotate, and the scraper 307 keeps in contact with the surface of the grinding disc 4 under the action of the elastic force-applying structure, scraping the material towards the grinding area; the ground material falls to the bottom of the extraction tank 1; the extraction liquid is added to the bottom of the extraction tank 1 through the extraction liquid inlet pipe 105; the rotating shaft 203 drives the support frame 5 and the agitator to rotate, and the agitator agitates the mixture of extraction liquid and tobacco raw materials; after extraction is completed, the extract is discharged through the discharge hopper 106.

[0053] In use, tobacco flavoring material is first added to the grinding disc 4 through the feed hopper 103 and the conical guide plate 209. The motor 207 is then turned on, driving the drive gear 206 and driven gear 205 to rotate. The driven gear 205 drives the rotating shaft 203 and the conical protective plate 208 to rotate. The end of the rotating shaft 203 rotates inside the protective cover 104 to prevent it from shifting. The rotating shaft 203 drives the rotating frame 201 and the crushing wheel 204 to rotate. The rotating frame 201 drives the rotating wheel 202 to rotate inside the circular hollow plate 2. The crushing wheel 204 grinds the tobacco flavoring material on the grinding disc 4. The rotating shaft 203 drives the fixed plate 3, the hollow column 301, and the sliding column 306 to rotate. The sliding column 306 drives the scraper 307 to rotate. Due to the action of the first spring 302, the first spring 302 presses the moving disc 303. The moving disc 303 drives the guide column 305 to move along the inside of the groove 304. The moving disc 303 pushes the scraper... Plate 307 contacts the surface of grinding disc 4. Scraper 307 scrapes the tobacco aroma substance on grinding disc 4. Raw material particles of the correct size enter the bottom of extraction tank 1 through grinding disc 4 and conical slide plate 403. Extraction liquid enters the bottom of extraction tank 1 through extraction liquid feed pipe 105 and contacts the tobacco aroma substance to extract it. Rotating shaft 203 drives support frame 5, inclined plate 501 and stirring plate 506 to rotate. Inclined plate 501 and stirring plate 506 contact the tobacco aroma substance and extraction liquid, and fully mix the extraction liquid and tobacco aroma substance. When stirring plate 506 contacts the mixture of tobacco aroma substance and extraction liquid, stirring plate 506 deviates at a certain angle. Second spring 503 limits the amount of deviation of stirring plate 506, which can generate a certain angle of reciprocating motion to stir the mixture and improve stirring efficiency. Heating plate 509 can increase the extraction temperature in extraction tank 1. After extraction, it can be discharged and collected through discharge hopper 106.

[0054] This method first involves grinding and pulverizing the tobacco raw material to reduce particle size and increase specific surface area. Simultaneously, the scraper 307 ensures the material on the grinding disc 4 is continuously pushed to the grinding area, preventing the accumulation of uncrushed material. After grinding, the material falls, and the extraction liquid is added, rather than adding the liquid first and then the material, preventing liquid splashing or material floating. The stirring step is performed after adding the liquid to ensure thorough mixing of the extraction liquid and the material. Throughout the method, grinding, scraping, and stirring are all driven by the same motor 207, achieving process linkage. Compared with existing technologies, this method, due to its efficient grinding and stirring, shortens the extraction time and increases the throughput per unit time.

[0055] While the specific embodiments of the present invention have been described above, they are not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A tobacco aroma substance extraction device, characterized in that, It includes an extraction tank and a grinding assembly, a scraping assembly, and a stirring assembly disposed within the extraction tank; The grinding assembly includes a grinding disc, a pulverizing wheel, and a drive unit. The grinding disc is fixed inside the extraction tank. The drive unit includes a motor, a drive gear, a driven gear, and a rotating shaft. The motor is mounted on the top of the extraction tank. The drive gear is connected to the output shaft of the motor. The driven gear meshes with the drive gear and is fixedly sleeved on the rotating shaft. The pulverizing wheel is mounted on the rotating shaft and located above the grinding disc. The scraping assembly includes a scraper and an elastic force-applying structure. The scraper is connected to the rotating shaft through the elastic force-applying structure, and the scraper is in contact with the surface of the grinding disc. The stirring assembly includes a support frame and an agitator. The support frame is fixed to the lower part of the rotating shaft, and the agitator is mounted on the support frame.

2. The tobacco aroma substance extraction device as described in claim 1, characterized in that, The grinding assembly also includes a rotating frame, a rotating wheel, and a circular hollow plate. The circular hollow plate is fixed to the vertical inner wall of the extraction tank. The rotating wheel is rotatably installed inside the circular hollow plate. The rotating frame is connected between the rotating wheel and the rotating shaft. The grinding wheel is rotatably installed on the outer periphery of the rotating frame. A conical guide plate is fixed to the top of the circular hollow plate. An extraction liquid feed pipe is connected to the outer periphery of the extraction tank. A discharge hopper is connected to the bottom of the extraction tank.

3. The tobacco aroma substance extraction apparatus as described in claim 1, characterized in that, The elastic force-applying structure includes a fixed plate, a hollow column, a first spring, and a sliding column. The fixed plate is fixed to the rotating shaft, the hollow column is connected to the bottom of the fixed plate, the first spring is located inside the hollow column, the upper end of the sliding column is connected to the first spring, and the lower end of the sliding column extends out of the hollow column and is fitted with the scraper.

4. The tobacco aroma substance extraction device as described in claim 3, characterized in that, The hollow column has sliding grooves on both sides, a movable disk is fixed on the sliding column, and guide posts are provided at both ends of the movable disk. The guide posts are slidably engaged in the sliding grooves. The upper end of the first spring is connected to the fixed plate, and the lower end of the first spring is connected to the movable disk.

5. The tobacco aroma substance extraction apparatus as described in claim 1, characterized in that, The agitator includes an inclined plate and an agitator plate. The inclined plate is fixedly installed on the support frame, and the agitator plate is oscillatingly connected to the support frame.

6. The tobacco aroma substance extraction apparatus as described in claim 5, characterized in that, The support frame is provided with a rotating groove, a second spring is connected in the rotating groove, a rotating column is rotatably connected in the rotating groove, and the rotating column is connected to the stirring plate through a connecting column. The stirring plate can generate a reciprocating motion with an angular offset under the action of the second spring.

7. The tobacco aroma substance extraction apparatus as described in claim 1, characterized in that, The extraction tank has a guide bucket installed on its vertical inner wall. The guide bucket is located below the grinding disc, and a heating plate is provided on the outer periphery of the guide bucket.

8. The tobacco aroma substance extraction apparatus as described in claim 1, characterized in that, A conical slide plate and a circular protective plate are connected below the grinding disc. The circular protective plate is located on the outer periphery of the conical slide plate and is connected to the inner wall of the extraction tank via a crossbar.

9. The tobacco aroma substance extraction apparatus as described in claim 1, characterized in that, The top of the extraction tank is provided with a feed hopper and a protective cover. The upper end of the rotating shaft is rotatably installed inside the protective cover. A conical protective plate is also fixed on the rotating shaft, and the conical protective plate is located above the driven gear.

10. An extraction method based on the tobacco aroma substance extraction apparatus according to any one of claims 1 to 9, characterized in that, Includes the following steps: Add the tobacco raw materials to the grinding disc; The motor is started, and the rotating shaft is driven to rotate through the drive gear and the driven gear. The rotating shaft drives the crushing wheel to rotate, which grinds the tobacco raw materials on the grinding disc. The rotating shaft drives the scraper to rotate, and the scraper maintains contact with the surface of the grinding disc under the action of the elastic force-applying structure, scraping the material towards the grinding area; The ground material falls to the bottom of the extraction tank; Add the extractant to the bottom of the extraction tank through the extractant feed pipe; The rotating shaft drives the support frame and the agitator to rotate, and the agitator agitates the mixture of extract and tobacco raw materials. After extraction is complete, the extract is discharged through the discharge hopper.

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