Continuous distillation equipment for multistage fractionation in transition area

Abstract

The utility model belongs to the technical field of white spirit distillation, and particularly relates to continuous distillation equipment for multistage fractionation in a transition area. According to the continuous distillation equipment for multi-stage fractionation in the transition area, the multi-stage fractionation cover and the fractionation structure connected with the multi-stage fractionation cover are arranged between the foreshot steam collecting cover and the high-quality wine steam collecting cover or between the high-quality wine steam collecting cover and the after-run steam collecting cover, and the thermometer and the micromanometer in the fractionation structure are used for detecting wine gas parameter data in real time; the control module and the three-way switching valve are combined to precisely regulate and control the flow direction of the wine gas, so that the wine gas is selectively fractionated to the foreshot liquid collector, the high-quality wine liquid collector or the after-run collector, the problem of mixing and mixing of the wine gas among all sections of wine liquid collection in traditional equipment is effectively avoided, the fractionation precision is remarkably improved, and the fractionation efficiency is improved. The mixing rate of foreshot liquid, high-quality wine and after-run is greatly reduced, the problems of response lag and poor stability caused by manual operation are reduced, the distillation efficiency is improved, the wine quality is guaranteed, and the resource waste and the energy consumption cost are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of liquor distillation technology, specifically relating to a continuous distillation device with multi-stage fractionation in the transition zone. Background Technology

[0002] Traditional solid-state continuous distillation equipment for baijiu typically employs a simple segmented steam collection hood structure. This leads to easy mixing of vapors between the head, premium, and tail sections, resulting in insufficient fractionation precision. Due to the lack of precise fractional control methods, relying solely on manual experience or a single temperature parameter for adjustment makes it difficult to achieve efficient separation of premium baijiu. This results in a mixing rate of 15%-20% between premium and tail baijiu, severely impacting the quality of the spirit and wasting resources. Furthermore, the steam regulation in existing equipment depends on manual operation, exhibiting slow response and poor stability. This leads to a deviation of ±10% in the steam supply between the head and premium baijiu sections, reducing distillation efficiency and increasing energy costs. Utility Model Content

[0003] The purpose of this invention is to overcome the problem that the existing continuous distillation process for baijiu lacks precise grade control methods, which leads to easy mixing of alcohol vapor between the head section, the high-quality section, and the tail section. The invention provides a continuous distillation device that achieves multi-stage fractionation of alcohol vapor in the transition zone between the head section, the high-quality section, and the tail section, thereby reducing the mixing of alcohol vapor.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A continuous distillation apparatus with multi-stage fractionation in a transition zone includes a control module, a mash conveying mechanism, a steam conveying module, and a vapor collector. The mash conveying mechanism includes a conveyor belt for conveying the mash along one side, and the conveyor belt has vent holes. The steam conveying module is connected to a steam input module and is used to deliver steam to the vent holes and flow through the mash to form vapor. The vapor collector is located above the mash conveying mechanism and includes, sequentially along the conveying direction of the mash conveying mechanism, a head vapor collector, a high-quality liquor vapor collector, and a tail vapor collector. A multi-stage fractionation hood is provided between the head vapor collector and the high-quality liquor vapor collector, or between the high-quality liquor vapor collector and the tail vapor collector. The head vapor collector is equipped with a head liquid collector, the high-quality liquor vapor collector is equipped with a high-quality liquor liquid collector, and the tail vapor collector is equipped with a tail liquid collector. The mash conveying mechanism includes a feeding area, a head area corresponding to the head vapor collector, and a high-quality liquor area corresponding to the high-quality liquor vapor collector. The system includes a premium liquor zone in the liquor collection hood, a tail liquor zone in the corresponding tail liquor collection hood, and a fractionation transition zone in the corresponding multi-stage fractionation hood. The multi-stage fractionation hood contains at least one fractionation structure along the conveying direction of the mash conveying mechanism. Each fractionation structure includes a fractionation outlet connected to the inner side of the multi-stage fractionation hood, a fractionation pipe connected to the external fractionation outlet, and a thermometer and micro-manometer for detecting the liquor vapor within the fractionation pipe. The external fractionation pipes of each fractionation outlet are connected to a head liquor collector and a premium liquor collector respectively via a three-way switching valve, allowing the control module to deliver the liquor vapor collected at the fractionation outlet to either the head liquor collector or the premium liquor collector based on the detected temperature and pressure data. Alternatively, the external fractionation pipes of each fractionation outlet are connected to a premium liquor collector and a tail liquor collector respectively via a three-way switching valve, allowing the control module to deliver the liquor vapor collected at the fractionation outlet to both the premium liquor collector and the tail liquor collector based on the detected temperature and pressure data.

[0006] Compared with existing technologies, the continuous distillation equipment of this invention, which features multi-stage fractionation in the transition zone, sets up multi-stage fractionation hoods and a fractionation structure connecting these hoods between the head and premium liquor collection hoods or between the premium liquor collection hood and the tail collection hood. Utilizing thermometers and micro-manometers within the fractionation structure to monitor vapor parameters in real time, and combining this with a control module and a three-way switching valve to precisely regulate the vapor flow direction, the equipment selectively fractionates the vapor to the head liquid collector, premium liquor collector, or tail collection hood. This effectively avoids the mixing and cross-contamination problems between different liquor collection stages in traditional equipment, significantly improves fractionation accuracy, drastically reduces the mixing rate of head liquid, premium liquor, and tail liquor, reduces response lag and instability issues caused by manual operation, improves distillation efficiency, ensures liquor quality, and reduces resource waste and energy costs.

[0007] Furthermore, the multi-stage fractionation hood includes a first multi-stage fractionation hood located between the head vapor collection hood and the premium vapor collection hood, and a second multi-stage fractionation hood located between the premium vapor collection hood and the tail vapor collection hood; the mash conveying mechanism is provided with a first fractionation transition zone corresponding to the first multi-stage fractionation hood and a second fractionation transition zone corresponding to the second multi-stage fractionation hood; the fractionation structure includes a first fractionation structure located in the first multi-stage fractionation hood and a second fractionation structure located in the second multi-stage fractionation hood; the first fractionation structure includes a first fractionation outlet connected to the inner side of the first multi-stage fractionation hood and a first fractionation pipe connected to the outer side of the first fractionation outlet, and a first thermometer and a first micrometer for detecting the vapor in the first fractionation pipe. The second fractionation structure includes a second fractionation outlet connected to the inner side of the second multi-stage fractionation hood, a second fractionation tube connected to the outer side of the second fractionation outlet, and a second thermometer and a second micro-manometer for detecting the alcohol vapor in the second fractionation tube. This configuration, by setting up the first multi-stage fractionation hood, the second multi-stage fractionation hood, and their corresponding fractionation transition zones and structures, enables precise graded control of the alcohol vapor at the head, premium, and tail stages. The fractionation tube, in conjunction with the thermometer and micro-manometer, monitors the alcohol vapor parameters in each stage in real time, precisely adjusting the fractionation efficiency and effectively improving the separation purity of different quality fractions. Simultaneously, it optimizes the collaborative operation efficiency of the mash conveying mechanism and the fractionation hood, making the distillation process more stable and controllable.

[0008] Furthermore, the multi-stage fractionation hood has 3 to 20 fractionation structures along the conveying direction of the mash conveying mechanism; the fractionation outlets are located at the top of the multi-stage fractionation hood and arranged along the conveying direction of the mash conveying mechanism.

[0009] Furthermore, the first and second fractionation structures are each provided with five fractionation points along the conveying direction of the mash conveying mechanism; the length of the first and second fractionation transition zones along the conveying direction of the mash conveying mechanism is 500mm, the inner diameter φ of the first and second fractionation tubes is 50mm, the spacing between adjacent first fractionation tubes is 100mm, and the spacing between adjacent second fractionation tubes is 100mm. By setting five fractionation points in each of the first and second fractionation structures along the conveying direction of the mash, and limiting the length of the fractionation transition zone (500mm), the inner diameter of the fractionation tube (φ50mm), and the spacing between adjacent fractionation tubes (100mm), the fractionation process of the alcohol vapor is made more uniform and stable, and the accuracy of segmented distillation is improved. The optimized structural dimensions ensure that the alcohol vapor is fully condensed and divided, reducing cross-interference between different fractionations, while improving distillation efficiency, and making the separation of the heads, high-quality liquor, and tails clearer and more controllable.

[0010] Furthermore, the thermometer has an accuracy of ±0.1℃, and the micromanometer has an accuracy of ±1Pa.

[0011] Furthermore, the system also includes a vapor separation mechanism located within the multi-stage distillation hood. This mechanism comprises a lifting pusher located inside the multi-stage distillation hood, a separator plate located at the lower output end of the lifting pusher, and a laser height gauge. The separator plate extends along the width of the conveyor belt. The laser height gauge is used to detect the height of the flowing mash, allowing the lifting pusher to control the lower end of the separator plate to be tightly against the upper side of the flowing mash through a lifting motion. By setting up this vapor separation mechanism within the multi-stage distillation hood, consisting of a lifting pusher, a separator plate, and a laser height gauge, and using the laser height gauge to detect the mash height in real time and dynamically adjust the position of the separator plate to ensure its lower end is always tightly against the surface of the mash, an effective physical barrier is formed. This precisely separates the vapors from different distillation stages, significantly reducing cross-contamination between the heads, premium spirits, and tails, improving the purity and flavor consistency of each stage of the spirit, and ensuring the continuity and stability of the distillation process.

[0012] Furthermore, the stroke of the separator plate is 0-300mm, and when the separator plate is working, the gap between the lower end of the separator plate and the mash material is <5mm. By setting the separator plate's lifting stroke (0-300mm) and strictly controlling the gap between its lower end and the mash material (<5mm), the separator plate can adapt to mash layers of different thicknesses and always maintain the best sealing state, effectively blocking the crossflow of alcohol vapor. This design not only ensures the separator plate's adaptability to different working conditions but also minimizes alcohol vapor leakage, making the separation of alcohol vapor in each distillation section more thorough, thereby significantly improving the purity of high-quality liquor and the stability of the distillation process.

[0013] Furthermore, the vapor separation mechanism is located in the inner middle of the multi-stage fractionating hood. By placing the vapor separation mechanism in the inner middle of the multi-stage fractionating hood, it can form a central separation effect on the vapor flow during the distillation process, ensuring that the heads, premium spirits, and tails are evenly distributed and effectively isolated within the fractionating hood. The design of the middle position optimizes the vapor flow path, reduces turbulence and cross-contamination, improves the separation accuracy and purity of each segment of the spirit, and makes the distillation process more stable and controllable.

[0014] Furthermore, the multi-stage fractionating hood is equipped with the vapor separation mechanism on both sides. By symmetrically setting the vapor separation mechanism on both sides of the multi-stage fractionating hood, the mash can be precisely sealed on both sides during transportation, effectively eliminating vapor leakage at the edges. This design significantly improves the airtightness inside the fractionating hood, ensuring that the heads, premium spirits, and tails fractions can be uniformly separated in the width direction, avoiding the flow deviation problem that may occur with unilateral separation, and making the distillation quality more stable and consistent.

[0015] Furthermore, multiple vapor separation mechanisms are provided and located between adjacent fractionation structures. This arrangement, by setting multiple vapor separation mechanisms between adjacent fractionation structures, forms a multi-segment dynamic isolation system, enabling more refined zoning control of the mash during transport. This design effectively strengthens the physical isolation between different fractions, significantly reduces vapor cross-flow, ensures the purity of the heads, premium spirits, and tails, while improving the stability and fractionation efficiency of the distillation process, resulting in a more uniform and consistent quality of each segment of the spirit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the continuous distillation equipment for multi-stage fractionation in the transition zone of this utility model.

[0017] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle.

[0018] Figure 3 for Figure 1 A magnified view of a portion of region B in the middle.

[0019] Labeling Explanation: 1. Fermentation Mash Conveying Mechanism; 11. Conveyor Belt; 21. Head Distillation Vapor Collector; 22. Premium Distillation Vapor Collector; 23. Tail Distillation Vapor Collector; 31. Head Distillate Collector; 32. Premium Distillate Collector; 33. Tail Distillate Collector; 12. Feeding Area; 13. Head Distillation Area; 14. Premium Distillation Area; 15. Tail Distillation Area; 41. First Multi-Stage Distillation Hood; 51. Second Multi-Stage Distillation Hood; 42. First Distillation Transition Zone; 52. Second Distillation Transition Zone; 44. First Distillation Pipe; 45. First Thermometer; 46. First Micromanometer; 47. Second Distillation Outlet; 54. Second Distillation Pipe; 55. Second Thermometer; 56. Second Micromanometer; 57. Gas Separation Mechanism; 6. Lifting Push Rod; 61. Separator Plate; 62. Laser Altimeter; 63. Three-Way Switching Valve; 49. Detailed Implementation

[0020] The specific embodiments of this utility model are described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] See Figures 1 to 3This utility model discloses a continuous distillation device for multi-stage fractionation in the transition zone, comprising a control module, a mash conveying mechanism 1, a steam conveying module (not shown), and a vapor collector. The mash conveying mechanism 1 includes a conveyor belt 11 for conveying the mash along one side, and the conveyor belt 11 has vent holes (not shown). The steam conveying module is connected to a steam input module and is used to deliver steam to the vent holes and flow through the mash to form vapor. The vapor collector is located above the mash conveying mechanism 1 and includes, along the conveying direction of the mash conveying mechanism 1, a head vapor collector 21, a high-quality liquor vapor collector 22, and a tail vapor collector 23. A multi-stage fractionation hood is provided between the head vapor collector 21 and the high-quality liquor vapor collector 22, or between the high-quality liquor vapor collector 22 and the tail vapor collector 23. The head vapor collector 21 is equipped with a head liquid collector 31, and the high-quality liquor vapor collector 22 is equipped with a high-quality liquor collector 33. The wine liquid collector 32 and the wine tail vapor collection hood 23 are equipped with wine tail collector 33; the mash conveying mechanism 1 is provided with a feeding area 12, a wine head area 13 corresponding to the wine head vapor collection hood 21, a high-quality wine area 14 corresponding to the high-quality wine vapor collection hood 22, a wine tail area 15 corresponding to the wine tail vapor collection hood 23, and a fractionation transition area corresponding to the multi-stage fractionation hood. The multi-stage fractionation hood is provided with at least one fractionation structure along the conveying direction of the mash conveying mechanism 1. The fractionation structure includes a fractionation outlet connected to the inside of the multi-stage fractionation hood and a fractionation pipe connected to the external fractionation outlet, as well as a thermometer and a micro-pressure gauge for detecting the wine vapor in the fractionation pipe. The fractionation pipe connected to the external fractionation outlet is connected to the wine head liquid collector 31 and the high-quality wine liquid collector 32 respectively through a three-way switching valve 49, so that the control module will transport the wine vapor collected at the fractionation outlet to the wine head liquid collector 31 or the high-quality wine liquid collector 32 according to the detected temperature and pressure data.

[0022] Alternatively, in an alternative embodiment, the fractionation pipes connected to each fractionation outlet are connected to the premium wine collector 32 and the tail wine collector 33 respectively via a three-way switching valve 49, so that the control module will deliver the wine vapor collected at the fractionation outlet to the premium wine collector 32 and the tail wine collector 33 according to the detected temperature and pressure data.

[0023] This utility model discloses a continuous distillation device for multi-stage fractionation in the transition zone. When the transition zone is in operation, the fractionation structure and control module fractionate the alcohol vapor to the head liquid collector 31, the high-quality liquor collector 32, or the tail liquid collector 33 according to the following alcohol content calculation model: The alcohol content calculation model is: V%=9.594(100-T)-0.3047(100-T)2+0.00452ΔP+9.356×10-8ΔP2; where (T:55-100℃, ΔP:-80,000Pa≤ΔP≤+20,000Pa), T is the temperature, and ΔP is the difference between the temperature and the atmospheric pressure. In specific implementation, the alcohol content of the fractionated alcohol to the head liquid collector 31, the premium liquid collector 32, or the tail liquid collector 33 can be set according to the usage requirements. For example, the alcohol content of the head liquid collector 31 can be 50% to 60%, the alcohol content of the premium liquid collector 32 can be 40% to 50%, and the alcohol content of the tail liquid collector 33 can be 30% to 40%; or, the alcohol content of the head liquid collector 31 can be 55% to 65%, the alcohol content of the premium liquid collector 32 can be 45% to 55%, and the alcohol content of the tail liquid collector 33 can be 35% to 45%.

[0024] Compared with existing technologies, the continuous distillation equipment of this invention with multi-stage fractionation in the transition zone, by setting up multi-stage fractionation hoods and fractionation structures connecting the multi-stage fractionation hoods between the head vapor collection hood 21 and the premium wine vapor collection hood 22 or the premium wine vapor collection hood 22 and the tail vapor collection hood 23, utilizes thermometers and micro-manometers in the fractionation structure to detect alcohol vapor parameters in real time, and combines the control module and three-way switching valve 49 to precisely regulate the direction of alcohol vapor flow, so as to selectively fractionate alcohol vapor to the head liquid collector 31, the premium wine liquid collector 32 or the tail liquid collector 33, effectively avoiding the mixing and cross-contamination problem of alcohol vapor between different stages of alcohol collection in traditional equipment, significantly improving fractionation accuracy, greatly reducing the mixing rate of head liquid, premium wine and tail liquid, reducing the response lag and poor stability caused by manual operation, improving distillation efficiency, ensuring the quality of the liquor, and reducing resource waste and energy consumption costs.

[0025] See Figures 1 to 3In one embodiment, the multi-stage fractionation hood includes a first multi-stage fractionation hood 41 disposed between the head vapor collection hood 21 and the premium vapor collection hood 22, and a second multi-stage fractionation hood 51 disposed between the premium vapor collection hood 22 and the tail vapor collection hood 23; the mash conveying mechanism 1 is provided with a first fractionation transition zone 42 corresponding to the first multi-stage fractionation hood 41 and a second fractionation transition zone 52 corresponding to the second multi-stage fractionation hood 51; the fractionation structure includes a first fractionation structure disposed in the first multi-stage fractionation hood 41 and a second fractionation structure disposed in the second multi-stage fractionation hood 51; the first fractionation structure includes a first fractionation outlet 44 communicating with the inner side of the first multi-stage fractionation hood 41 and a first fractionation pipe 45 connected to the outer side of the first fractionation outlet 44, and a first fractionation pipe 45 for detecting the vapor in the first fractionation pipe 45. A thermometer 46 and a first micro-manometer 47 are included; the second fractionation structure includes a second fractionation outlet 54 connected to the inner side of the second multi-stage fractionation hood 51, a second fractionation tube 55 connected to the outer side of the second fractionation outlet 54, and a second thermometer 56 and a second micro-manometer 57 for detecting the alcohol vapor in the second fractionation tube 55; by setting up the first multi-stage fractionation hood 41, the second multi-stage fractionation hood 51 and their corresponding fractionation transition zone and fractionation structure, the fine-grained graded control of alcohol vapor in the head, premium and tail stages is realized; the fractionation tube, together with the thermometer and micro-manometer, monitors the alcohol vapor parameters of each stage in real time, accurately adjusts the fractionation efficiency, effectively improves the separation purity of different quality fractions, and optimizes the collaborative operation efficiency of the mash conveying mechanism 1 and the fractionation hood, making the distillation process more stable and controllable.

[0026] See Figures 1 to 3 In one embodiment, the multi-stage fractionation hood has 3 to 20 fractionation structures along the conveying direction of the mash conveying mechanism 1; the fractionation outlets are located at the top of the multi-stage fractionation hood and arranged along the conveying direction of the mash conveying mechanism 1.

[0027] See Figures 1 to 3 In one embodiment, five fractionation structures are respectively provided along the conveying direction of the mash conveying mechanism 1; the length of the first fractionation transition zone 42 and the second fractionation transition zone 52 along the conveying direction of the mash conveying mechanism 1 is 500mm, the inner diameter φ of the first fractionation tube 45 and the second fractionation tube 55 is 50mm, the distance between adjacent first fractionation tubes 45 is 100mm, and the distance between adjacent second fractionation tubes 55 is 100mm; by setting five fractionation points in each of the first and second fractionation structures along the conveying direction of the mash, and limiting the length of the fractionation transition zone (500mm), the inner diameter of the fractionation tube (φ50mm), and the distance between adjacent fractionation tubes (100mm), the fractionation process of the alcohol vapor is made more uniform and stable, and the accuracy of segmented distillation is improved; the optimized structural size design ensures that the alcohol vapor is fully condensed and divided, reduces cross-interference between different fractionations, and improves distillation efficiency, making the separation of the heads, high-quality alcohol and tails clearer and more controllable.

[0028] In one embodiment, the thermometer has an accuracy of ±0.1℃, and the micromanometer has an accuracy of ±1Pa.

[0029] See Figures 1 to 3 In one embodiment, the system further includes a vapor separation mechanism 6 disposed within the multi-stage distillation hood. The vapor separation mechanism 6 includes a lifting push rod 61 disposed inside the multi-stage distillation hood, a separator plate 62 disposed at the lower output end of the lifting push rod 61, and a laser height meter 63. The separator plate 62 extends along the width direction of the conveyor belt 11. The laser height meter 63 is used to detect the height of the flowing mash, so that the lifting push rod 61 controls the lower end of the separator plate 62 to be tightly against the upper side of the flowing mash through a lifting motion. This design, by incorporating a vapor separation mechanism 6 consisting of a lifting pusher 61, a separator 62, and a laser height meter 63 within the multi-stage distillation hood, allows for real-time detection of the mash height by the laser height meter 63 and dynamic adjustment of the separator 62 position. This ensures that the lower end of the separator 62 remains in close contact with the surface of the mash, forming an effective physical barrier. This precisely separates the vapors from different distillation stages, significantly reducing cross-contamination between the heads, premium spirits, and tails, improving the purity and flavor consistency of each stage, and ensuring the continuity and stability of the distillation process.

[0030] See Figures 1 to 3 In one embodiment, the stroke of the separator 62 is 0-300mm, and when the separator 62 is working, the gap between the lower end of the separator 62 and the mash material is <5mm. By setting it in this way, by limiting the lifting stroke of the separator 62 (0-300mm) and strictly controlling the gap between its lower end and the mash material (<5mm), it is ensured that the separator 62 can adapt to mash layers of different thicknesses and always maintain the best sealing state, effectively blocking the crossflow of alcohol vapor. This design not only ensures the adaptability of the separator 62 to different working conditions, but also minimizes alcohol vapor leakage, making the separation of alcohol vapor in each distillation section more thorough, thereby significantly improving the purity of high-quality liquor and the stability of the distillation process.

[0031] See Figures 1 to 3 In this embodiment, the vapor separation mechanism 6 is located in the middle of the inner side of the multi-stage distillation hood. By placing the vapor separation mechanism 6 in the middle of the inner side of the multi-stage distillation hood, it can form a central separation effect on the vapor flow during the distillation process, ensuring that the heads, premium wine and tails fractions are evenly distributed and effectively isolated within the distillation hood. The design of the middle position optimizes the vapor flow path, reduces turbulence and cross-contamination, improves the separation accuracy and purity of each segment of the wine, and makes the distillation process more stable and controllable.

[0032] See Figures 1 to 3In an alternative embodiment, the multi-stage fractionating hood is provided with the vapor separation mechanism 6 on both sides. By symmetrically setting the vapor separation mechanism 6 on both sides of the multi-stage fractionating hood, the mash can be precisely sealed on both sides during transportation, effectively eliminating the leakage of vapor from the edges. This design significantly improves the airtightness inside the fractionating hood, ensuring that the heads, premium liquor and tails fractions can be uniformly separated in the width direction, avoiding the flow deviation problem that may be caused by unilateral separation, and making the distillation quality more stable and consistent.

[0033] See Figures 1 to 3 In an alternative embodiment, multiple vapor separation mechanisms 6 are provided and located between adjacent fractionation structures. By setting multiple vapor separation mechanisms 6 between adjacent fractionation structures, a multi-segment dynamic isolation system is formed, enabling more refined zoning control of the mash during transportation. This design effectively strengthens the physical isolation between different fractionation segments, significantly reduces vapor crossflow, ensures the purity of the heads, premium liquor, and tails, and improves the stability and fractionation efficiency of the distillation process, making the quality of each segment of liquor more uniform and consistent.

[0034] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A continuous distillation apparatus for multi-stage fractionation in a transition zone, characterized in that, include: Control module; The mash conveying mechanism is equipped with a conveyor belt for conveying the mash in one direction, and the conveyor belt is equipped with ventilation holes; The steam delivery module, connected to the steam input module, is used to deliver steam to the vent and allow it to flow through the mash to form alcohol vapor. The vapor collector is located above the mash conveying mechanism. Along the conveying direction of the mash conveying mechanism, the vapor collector includes a head vapor collector, a high-quality mash vapor collector, and a tail vapor collector. A multi-stage fractionation hood is provided between the head vapor collector and the high-quality mash vapor collector, or between the high-quality mash vapor collector and the tail vapor collector. The head vapor collector is equipped with a head liquid collector, the high-quality mash vapor collector is equipped with a high-quality liquid collector, and the tail vapor collector is equipped with a tail collector. The mash conveying mechanism is provided with a feeding area, a head area corresponding to the head vapor collection hood, a high-quality wine area corresponding to the high-quality wine vapor collection hood, a tail area corresponding to the tail vapor collection hood, and a fractionation transition area corresponding to the multi-stage fractionation hood. The multi-stage fractionation hood is provided with at least one fractionation structure along the conveying direction of the mash conveying mechanism. The fractionation structure includes a fractionation outlet connected to the inside of the multi-stage fractionation hood and a fractionation pipe connected to the outside fractionation outlet, as well as a thermometer and a micro-manometer for detecting the alcohol vapor in the fractionation pipe. Each fractionation outlet is connected to a distillation pipe via a three-way switching valve to a head liquid collector and a premium liquor collector, respectively, so that the control module will deliver the alcohol vapor collected at the fractionation outlet to the head liquid collector or the premium liquor collector based on the detected temperature and pressure data. Alternatively, the fractionation pipes connected to each fractionation outlet are connected to the premium wine collector and the tail wine collector respectively through a three-way switching valve, so that the control module will deliver the wine vapor collected at the fractionation outlet to the premium wine collector and the tail wine collector according to the detected temperature and pressure data.

2. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to claim 1, characterized in that, The multi-stage fractionation hood includes a first multi-stage fractionation hood located between the head vapor collection hood and the premium vapor collection hood, and a second multi-stage fractionation hood located between the premium vapor collection hood and the tail vapor collection hood. The mash conveying mechanism is equipped with a first fractionation transition zone corresponding to the first multi-stage fractionation hood and a second fractionation transition zone corresponding to the second multi-stage fractionation hood; The fractionation structure includes a first fractionation structure disposed in the first multi-stage fractionation hood and a second fractionation structure disposed in the second multi-stage fractionation hood; The first fractionation structure includes a first fractionation outlet connected to the inside of the first multi-stage fractionation hood, a first fractionation tube connected to the outside of the first fractionation outlet, and a first thermometer and a first micro-manometer for detecting the alcohol vapor in the first fractionation tube. The second fractionation structure includes a second fractionation outlet connected to the inside of the second multi-stage fractionation hood, a second fractionation tube connected to the outside of the second fractionation outlet, and a second thermometer and a second micro-manometer for detecting the alcohol vapor in the second fractionation tube.

3. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to claim 1, characterized in that, The multi-stage fractionation hood has 3 to 20 fractionation structures along the conveying direction of the mash conveying mechanism; The fractionation outlets are located at the top of the multi-stage fractionation hood and arranged along the conveying direction of the mash conveying mechanism.

4. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to claim 2, characterized in that, The first and second fractionation structures are each provided in five units along the conveying direction of the mash conveying mechanism.

5. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to claim 4, characterized in that, The length of the first fractionation transition zone and the second fractionation transition zone along the conveying direction of the mash conveying mechanism is 500mm. The inner diameter φ of the first fractionation tube and the second fractionation tube is 50mm. The distance between adjacent first fractionation tubes is 100mm, and the distance between adjacent second fractionation tubes is 100mm.

6. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to claim 1, characterized in that, The thermometer has an accuracy of ±0.1℃, and the micromanometer has an accuracy of ±1Pa.

7. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to any one of claims 1 to 6, characterized in that, It also includes a vapor separation mechanism located inside the multi-stage distillation hood. The vapor separation mechanism includes a lifting push rod located inside the multi-stage distillation hood, a partition plate located at the lower output end of the lifting push rod, and a laser height measuring instrument. The partition plate extends along the width of the conveyor belt, and the laser height measuring instrument is used to detect the height of the flowing mash so that the lifting push rod controls the lower end of the partition plate to be close to the upper side of the flowing mash through a lifting motion. The stroke of the separator plate is 0-300mm, and when the separator plate is working, the gap between the lower end of the separator plate and the mash material is <5mm.

8. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to claim 7, characterized in that, The vapor separation mechanism is located in the middle of the inner side of the multi-stage distillation hood.

9. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to claim 7, characterized in that, The alcohol vapor separation mechanism is provided on both sides of the multi-stage distillation hood.

10. The continuous distillation apparatus for multi-stage fractionation in the transition zone according to claim 7, characterized in that, The vapor separation mechanism is provided in multiple parts and is located between adjacent fractionation structures.

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