A flexible tobacco stem and leaf elution system and a flexible elution process

Abstract

The present application provides a kind of tobacco stem flexible washing and extraction system and flexible washing and extraction process, it is related to cigarette production technical field, and washing and extraction integrated machine is used to realize the cleaning and extraction of tobacco material, and the product after cleaning is sent to different positions respectively, and the washed stem water is sent into washed stem circulating water tank after cleaning;The extraction process is divided into single extraction and secondary extraction, and after the first extraction in single extraction and secondary extraction, it is stored by primary stem liquid tank;After the second extraction in secondary extraction, it is stored by secondary stem liquid tank;The present application controls process path by controller, material is transported according to different path, realizes any one of process path in one washing without extraction, one washing and extraction, one washing and two extractions, no washing and one extraction, no washing and two extractions, satisfies different process requirements of different tobacco stems, realizes flexible switching.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cigarette production, and more particularly to a flexible washing and extracting system for tobacco leaves and stems and a flexible washing and extracting process. BACKGROUND

[0002] Papermaking-process reconstituted tobacco is a sheet-shaped tobacco sheet obtained by using the principle of papermaking and through extraction, separation and recombination of discarded tobacco dust, fragments, tobacco stems and low-grade tobacco leaves in the process of cigarette production. The reconstituted tobacco produced by the papermaking process has the characteristics of small density, greater filling value than tobacco leaves and good mechanical processing performance, and when used as a cigarette raw material, it can better improve the taste and smoke density of cigarettes, play a role in reducing harm and reducing the cost of cigarettes.

[0003] In tobacco raw materials, due to the relatively compact structure of tobacco stems, it is usually necessary to wash and swell the stems before extraction in the production process, so as to increase the subsequent extraction rate of tobacco stems and the quality of the extraction liquid. Due to different varieties of tobacco raw materials, the quality of different varieties is different, and the process adopted by each variety of tobacco raw material also differs. The traditional tobacco stem washing and extracting method is difficult to control the washing and extracting process of tobacco stems, and can only clean different varieties of tobacco leaves according to the same process. The traditional tobacco stem washing and extracting method is prone to problems such as excessive moisture and softening of tobacco stems after washing, resulting in unstable product quality.

[0004] For those skilled in the art, how to adopt different washing and extracting processes for different tobacco raw materials is a technical problem to be solved at present. SUMMARY

[0005] The core of the present application is to provide a flexible washing and extracting system for tobacco leaves and stems, which adopts different washing and extracting processes for different tobacco raw materials, realizes five process paths of one washing without extraction, one washing with extraction, one washing with two extractions, no washing with one extraction and no washing with two extractions, and the specific scheme is as follows:

[0006] A flexible washing and extracting system for tobacco leaves and stems, comprising a washing and extracting all-in-one machine, a tobacco stem defiberizer, a tobacco stem squeezing machine, a tobacco stem washing circulating water tank, a tobacco stem buffer tank, a first-grade stem liquid tank, a second-grade stem liquid tank, a tobacco stem discharging bin, a tobacco stem water storage bin, an additive bin and a controller;

[0007] The tobacco stem discharging bin is used to store tobacco to be processed and provide tobacco to the washing and extracting all-in-one machine during washing and extraction; the tobacco stem water storage bin is used to store water for tobacco stems and supply water to the washing and extracting all-in-one machine during washing and extraction; and the additive bin is used to store extraction additives and provide additives to the washing and extracting all-in-one machine during extraction;

[0008] The washing and extracting all-in-one machine is used to stir tobacco during washing and extraction; the tobacco stem washing circulating water tank is used to store tobacco stem washing water discharged from the washing and extracting all-in-one machine during washing;

[0009] The tobacco stem buffer tank is used to receive the stem water mixture discharged from the integrated washing and extracting machine during washing and extraction, and send it to the tobacco stem defibrating machine for defibrating; the tobacco stem wringing machine is used to receive the defibrated tobacco material during washing and extraction, and wring it;

[0010] The primary stem liquid tank is used to store the liquid discharged from the integrated washing and extracting machine or the tobacco stem wringing machine during extraction; the secondary stem liquid tank is used to store the liquid discharged from the tobacco stem wringing machine during extraction, and can deliver the liquid to the integrated washing and extracting machine or the high-concentration pulping machine;

[0011] The controller is used to control the process path, so as to realize any one of the following process paths: one washing and no extraction, one washing and one extraction, one washing and two extractions, no washing and one extraction, and no washing and two extractions.

[0012] Optionally, the integrated washing and extracting machine comprises a washing and extracting shell; the inside of the washing and extracting shell is divided into upper and lower parts by a porous partition plate, so that the liquid can flow downward; an agitator is arranged in the washing and extracting shell, and is used to agitate the tobacco material accumulated above the porous partition plate;

[0013] A liquid discharge channel is arranged at the bottom of the washing and extracting shell, and a solid channel for discharging the tobacco material is arranged on the side wall.

[0014] Optionally, the agitator is a spiral elevator rotating around a vertical rotating shaft, and is used to lift the tobacco material upward.

[0015] Optionally, the tobacco stem wringing machine comprises a wringing shell and a spiral shaft; the inner cavity of the wringing shell is arranged in a tapered manner along the axial direction; and the spiral shaft rotates to drive the tobacco material to move along the axial direction and be squeezed.

[0016] The present application also provides a flexible washing and extracting process, which comprises:

[0017] One process path is selected from the following process paths: one washing and no extraction, one washing and one extraction, one washing and two extractions, no washing and one extraction, and no washing and two extractions;

[0018] When the process path is one washing and no extraction, the tobacco stem water storage bin adds tobacco washing water into the integrated washing and extracting machine, and the tobacco stem material bin adds tobacco material into the integrated washing and extracting machine; after the integrated washing and extracting machine is stirred for a specified time, the tobacco washing liquid is delivered from the integrated washing and extracting machine to the tobacco washing circulating water tank;

[0019] The tobacco stem water storage bin adds tobacco stem hot water into the integrated washing and extracting machine, and after the integrated washing and extracting machine is stirred for a specified time, the stem water mixture is delivered from the integrated washing and extracting machine to the tobacco stem buffer tank for buffering, then to the tobacco stem defibrating machine for defibrating, and then to the tobacco stem wringing machine for wringing; the wringing liquid is buffered in the secondary stem liquid tank;

[0020] When the process path is one washing and one extraction: the tobacco stem water storage bin adds tobacco stem washing water to the washing and extraction all-in-one machine, and the tobacco stem falling bin adds tobacco material to the washing and extraction all-in-one machine; after the washing and extraction all-in-one machine is stirred for a specified time, the tobacco stem washing liquid is sent from the washing and extraction all-in-one machine to the tobacco stem washing circulating water tank;

[0021] The tobacco stem water storage bin adds tobacco stem hot water dilution to the washing and extraction all-in-one machine, and the additive bin adds extraction additives to the washing and extraction all-in-one machine; after the washing and extraction all-in-one machine is stirred for a specified time, the tobacco stem water mixture is sent from the washing and extraction all-in-one machine to the tobacco stem buffer tank for buffering, then enters the tobacco stem defibrillation machine for defibrillation, and then enters the tobacco stem squeezing machine for squeezing; the squeezed liquid enters the first-stage stem liquid tank for buffering;

[0022] When the process path is one washing and two extractions: the tobacco stem water storage bin adds tobacco stem washing water to the washing and extraction all-in-one machine, and the tobacco stem falling bin adds tobacco material to the washing and extraction all-in-one machine; after the washing and extraction all-in-one machine is stirred for a specified time, the tobacco stem washing liquid is sent from the washing and extraction all-in-one machine to the tobacco stem washing circulating water tank;

[0023] The tobacco stem water storage bin adds tobacco stem hot water dilution to the washing and extraction all-in-one machine, and the additive bin adds extraction additives to the washing and extraction all-in-one machine; after the washing and extraction all-in-one machine is stirred for a specified time, the tobacco stem liquid enters the first-stage stem liquid tank for buffering;

[0024] The second-stage stem liquid tank adds second-stage stem liquid to the washing and extraction all-in-one machine, and the additive bin adds extraction additives to the washing and extraction all-in-one machine; after the washing and extraction all-in-one machine is stirred for a specified time, the tobacco stem water mixture is sent from the washing and extraction all-in-one machine to the tobacco stem buffer tank for buffering, then enters the tobacco stem defibrillation machine for defibrillation, and then enters the tobacco stem squeezing machine for squeezing; the squeezed liquid enters the second-stage stem liquid tank for buffering;

[0025] When the process path is no washing and one extraction: the tobacco stem water storage bin adds tobacco stem hot water dilution to the washing and extraction all-in-one machine, and the additive bin adds extraction additives to the washing and extraction all-in-one machine; the tobacco stem falling bin adds tobacco material to the washing and extraction all-in-one machine, and the washing and extraction all-in-one machine is stirred for a specified time to complete one extraction; the tobacco stem water mixture is sent from the washing and extraction all-in-one machine to the tobacco stem buffer tank for buffering, then enters the tobacco stem defibrillation machine for defibrillation, and then enters the tobacco stem squeezing machine for squeezing; the squeezed liquid enters the first-stage stem liquid tank for buffering;

[0026] When the process path is no washing and two extractions: the tobacco stem water storage bin adds tobacco stem hot water dilution to the washing and extraction all-in-one machine, and the additive bin adds extraction additives to the washing and extraction all-in-one machine; the tobacco stem falling bin adds tobacco material to the washing and extraction all-in-one machine; after the washing and extraction all-in-one machine is stirred for a specified time, the tobacco stem liquid enters the first-stage stem liquid tank for buffering;

[0027] The secondary stem liquid tank adds secondary stem liquid to the elution all-in-one machine, the additive bin adds extraction additive to the elution all-in-one machine, the elution all-in-one machine sends stem water mixture to the tobacco stem buffer tank after stirring for a specified time, and then the stem water mixture enters the tobacco stem defibring machine and the tobacco stem squeezing machine; and the squeezed liquid enters the secondary stem liquid tank.

[0028] The tobacco stem flexible washing and extraction system provided by the application realizes washing and extraction of tobacco material by means of an elution all-in-one machine, and sends the washed product to different positions respectively. After washing, the washed stem water is sent to the stem washing circulating water tank. The extraction process is divided into single extraction and double extraction. After single extraction and the first extraction in double extraction, the product is stored in the primary stem liquid tank. After the second extraction in double extraction, the product is stored in the secondary stem liquid tank. The controller controls the process path, and the material is transported according to different paths, so that any one of the process paths of one washing and no extraction, one washing and one extraction, one washing and two extractions, no washing and one extraction, and no washing and two extractions is realized, different process requirements of different tobacco stems are met, and flexible switching is realized. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 The schematic diagram of the tobacco stem flexible washing and extraction system provided by the application is shown in the figure.

[0031] Figure 2 The process flow chart of the one washing and no extraction process path is shown in the figure.

[0032] Figure 3 The process flow chart of the one washing and one extraction process path is shown in the figure.

[0033] Figure 4 The process flow chart of the one washing and two extractions process path is shown in the figure.

[0034] Figure 5 The process flow chart of the no washing and one extraction process path is shown in the figure.

[0035] Figure 6 The process flow chart of the no washing and two extractions process path is shown in the figure.

[0036] Figure 7 The structure schematic diagram of the elution all-in-one machine is shown in the figure.

[0037] Figure 8 The structure schematic diagram of the tobacco stem squeezing machine is shown in the figure.

[0038] The figure includes:

[0039] The elution all-in-one machine 1, the elution shell 11, the liquid discharge channel 111, the solid channel 112, the porous partition plate 12, the agitator 13, the tobacco stem fiber separator 2, the tobacco stem squeezing machine 3, the squeezing shell 31, the spiral shaft 32, the tobacco stem circulating water tank 4, the tobacco stem buffer tank 5, the first-stage stem liquid tank 6, the second-stage stem liquid tank 7, the tobacco stem dropping bin 8, the tobacco stem water storage bin 9, and the additive bin 10. DETAILED DESCRIPTION

[0040] In order to make the technical personnel in the art better understand the technical solutions of the present application, the tobacco leaf and tobacco stem flexible elution system of the present application will be described in detail below in combination with the drawings and specific embodiments.

[0041] The present application provides a tobacco leaf and tobacco stem flexible elution system, which comprises an elution all-in-one machine 1, a tobacco stem fiber separator 2, a tobacco stem squeezing machine 3, a tobacco stem circulating water tank 4, a tobacco stem buffer tank 5, a first-stage stem liquid tank 6, a second-stage stem liquid tank 7, a tobacco stem dropping bin 8, a tobacco stem water storage bin 9, an additive bin 10, and a controller. Figure 1 As shown in the figure, there are connecting pipelines between the relevant components. The elution all-in-one machine 1 is the central component of the system, and the elution all-in-one machine 1 is connected to the tobacco stem circulating water tank 4, the tobacco stem buffer tank 5, the first-stage stem liquid tank 6, the second-stage stem liquid tank 7, the tobacco stem dropping bin 8, the tobacco stem water storage bin 9, and the additive bin 10 through pipelines, respectively. The tobacco stem circulating water tank 4 and the elution all-in-one machine 1 are connected through two pipelines to realize the circulation of liquid. The tobacco stem buffer tank 5 is connected to the tobacco stem fiber separator 2 through a pipeline, the tobacco stem fiber separator 2 is connected to the tobacco stem squeezing machine 3 through a pipeline, and the tobacco stem squeezing machine 3 is connected to the second-stage stem liquid tank 7 through a pipeline. Valves (not shown in the figure) for shutting off are arranged between two components connected through a pipeline, and driving structures such as pumps for driving the movement of liquid and tobacco material are configured. The starting of the pump and the opening and closing of each valve are matched to realize different process flows.

[0042] The tobacco stem buffer tank 5, the first stem liquid tank 6, the second stem liquid tank 7, the tobacco stem dropping bin 8, the tobacco stem water storage bin 9, and the additive bin 10 are containers for storage. The tobacco stem dropping bin 8 is used for storing tobacco to be processed and for providing the tobacco to the washing and extracting integrated machine 1 during washing and extraction. The tobacco stem water storage bin 9 is used for storing water for tobacco and for supplying water to the washing and extracting integrated machine 1 during washing and extraction. The additive bin 10 is used for storing extraction additives and for providing the additives to the washing and extracting integrated machine 1 during extraction. The liquid stored in the tobacco stem water storage bin 9 can be clean water, and the water can be supplied through the tobacco stem water storage bin 9 during both washing and extraction. The temperature of the water in the tobacco stem water storage bin 9 can be adjusted to achieve better dissolution of impurities in the tobacco and better extraction. It should be noted that the additive bin 10 can store additives with a high concentration, and the additive bin 10 and the tobacco stem water storage bin 9 can supply the additives and water simultaneously during extraction, and the additives can be mixed in the washing and extracting integrated machine 1. Alternatively, the additive bin 10 can store diluted additives, and only the additive bin 10 can supply the liquid during extraction.

[0043] It should be noted that the washing process and the extraction process are two technological processes. The washing process is mainly used for removing dust and other impurities on the surface of tobacco leaves and stems and also serves to wet the tobacco leaves and stems. The extraction process is mainly used for extracting aromatic substances from tobacco leaves and stems, mainly by using extraction liquid to transfer the aromatic substances from the tobacco leaves and stems to the liquid. The quality of tobacco leaves and stems is affected by many factors such as production location, variety, climate, rain, and fertilizer. The quality includes the characteristics of the tobacco itself, such as the content of aromatic substances, and also includes the cleanliness of the surface. Different batches of tobacco also have differences, so the cleanliness and the content of aromatic substances of the tobacco vary. Different batches of tobacco need to be treated differently, that is, the washing process is optional, and the extraction process is also optional. The extraction process can be performed once or twice. When the tobacco is relatively clean, the washing process is not needed. When the tobacco has more aromatic characteristics, the extraction process can be performed twice. The specific treatment process needs to be determined according to the quality of the tobacco.

[0044] The washing and extracting integrated machine 1 is used for stirring the tobacco during washing and extraction. The tobacco needs to be stirred during both the washing and extraction processes to mix the tobacco and the liquid sufficiently. The stem washing circulating water tank 4 is used for storing the stem washing water discharged from the washing and extracting integrated machine 1 during washing as a temporary container for storing the stem washing water.

[0045] The tobacco stem buffer tank 5 is used to receive the stem water mixture discharged from the washing and extracting integrated machine 1 during washing and extraction, that is, the wet tobacco material containing filtered water; the tobacco stem buffer tank 5 temporarily stores the stem water mixture, and sends the stem water mixture to the tobacco stem defibrating machine 2 for defibrating; the tobacco stem defibrating machine 2 is used to defibrate the tobacco material during washing and extraction; and the tobacco stem wringing machine 3 is used to receive the defibrated tobacco material and wring the tobacco material during washing and extraction. Whether the tobacco material is only washed, only extracted, or extracted after washing, the tobacco material needs to be sent to the tobacco stem defibrating machine 2 for defibrating, and the defibrated tobacco material is wrung by the tobacco stem wringing machine 3; and the solid tobacco material wrung by the tobacco stem wringing machine 3 can be sent to the subsequent tobacco stem buffer tank for mixing with tobacco dust and extracting.

[0046] The primary stem liquid tank 6 is used to store the liquid discharged from the washing and extracting integrated machine 1 or the tobacco stem wringing machine 3 during extraction; the secondary stem liquid tank 7 is used to store the liquid discharged from the tobacco stem wringing machine 3 during extraction, and can deliver the liquid to the washing and extracting integrated machine 1 or the high-concentration pulping machine. The primary stem liquid tank 6 and the secondary stem liquid tank 7 respectively store the liquid; when two extractions are performed, the primary stem liquid tank 6 stores the liquid after the first extraction, and the secondary stem liquid tank 7 stores the liquid after the second extraction; when one extraction is performed, the primary stem liquid tank 6 stores the liquid after the extraction. The liquid concentrations of the first extraction and the second extraction are different, and the two containers are used to respectively store the liquid, so that the liquid concentration is controlled, and the liquid of different concentrations is used for subsequent processing and use, for example, the liquid of different concentrations is used for mutual adjustment.

[0047] The controller is used to control the process path, and realize any one of the process paths of one washing and no extraction, one washing and one extraction, one washing and two extractions, no washing and one extraction, and no washing and two extractions. The controller is mainly used to adjust and control the opening and closing of each valve and the operation of the pump, so that the liquid or the tobacco material moves along different paths, and the five process paths can be realized.

[0048] The flexible washing and extracting process can realize five different tobacco stem washing and extracting procedures, can control the running order and running time of different procedures through a numerical control system, realizes flexible extraction of the tobacco stem according to the characteristics of raw materials and product requirements, the extraction process is stable and controllable, and more product requirements can be met.

[0049] On the basis of the above technical scheme, in combination with Figure 7As shown, the elution washing all-in-one machine 1 comprises an elution washing shell 11, which is the external cover of the elution washing all-in-one machine 1, and the inner cavity of the elution washing shell 11 is a closed space capable of containing liquid and tobacco material. The inner part of the elution washing shell 11 is divided into two spaces by a porous partition plate 12, and the inner cavity of the elution washing shell 11 is divided into two spaces by the porous partition plate 12. Since a plurality of through holes are formed in the porous partition plate 12, the liquid can flow downward, and the through holes in the porous partition plate 12 are relatively small, so that most of the solid tobacco material is blocked, and the solid tobacco material is located above the porous partition plate 12.

[0050] An agitator 13 is arranged in the elution washing shell 11 and used to agitate the tobacco material accumulated above the porous partition plate 12. During the cleaning and extraction process, the agitator 13 is used to agitate the tobacco material, so that the tobacco material and the liquid are fully mixed. During the cleaning and extraction process, a large amount of liquid can immerse the tobacco material above the porous partition plate 12, so that the mixing can be fully realized during agitation.

[0051] A liquid discharge channel 111 is arranged at the bottom of the elution washing shell 11, and a solid discharge channel 112 is arranged at the side wall and used to discharge the tobacco material. After the cleaning or extraction process is completed, the liquid is discharged outward through the liquid discharge channel 111 at the bottom of the elution washing shell 11. Since the solid tobacco material is isolated above the porous partition plate 12, part of the liquid will reach the area below the porous partition plate 12 before being discharged. When the liquid discharge channel 111 is opened, the liquid can be quickly discharged, and the solid tobacco material can be prevented from causing blockage. The solid discharge channel 112 is arranged at the side wall of the elution washing shell 11 and located above the porous partition plate 12. After the solid tobacco material is drained, the solid tobacco material can be discharged from the solid discharge channel 112 at the side.

[0052] Specifically, the agitator 13 is a spiral elevator rotating around a vertical rotating shaft, which is used to lift the tobacco material upward. After being lifted to a certain height, the tobacco material falls downward under the action of gravity. Through continuous lifting and falling, the tobacco material can be agitated.

[0053] In combination Figure 8 As shown, the tobacco stem wringing machine 3 comprises a wringing shell 31 and a spiral shaft 32. The inner cavity of the wringing shell 31 is gradually tapered along the axial direction, Figure 8 The inner cavity of the wringing shell 31 gradually decreases in the radial direction from left to right, and the spiral shaft 32 rotates to drive the tobacco material to move along the axial direction and be squeezed. The spiral shaft 32 drives the tobacco material to move from left to right, and the gap between the spiral shaft 32 and the wringing shell 31 gradually decreases during the movement of the tobacco material to the right, so that the tobacco material is squeezed.

[0054] The present application also provides a flexible elution washing process, which comprises the following steps:

[0055] 1) Select one process path from the following: one wash without extraction, one wash and one extraction, one wash and two extractions, no wash and one extraction, and no wash and two extractions. The process path selection can be initiated by the operator or automatically selected based on the quality of the flue gas. Depending on the process path, the following five specific processes (2)-6) are adopted. When liquid or solid flows through the corresponding pipeline, the valve of that pipeline is opened.

[0056] 2) When the process path is a single wash without extraction: that is, only one washing is performed, and no extraction is carried out. (Combined with...) Figure 2 As shown, the tobacco stem storage tank 9 adds washing water to the washing and extraction machine 1, and the tobacco stem discharge tank 8 adds tobacco material to the washing and extraction machine 1; after the washing and extraction machine 1 stirs for a specified time, the washing liquid is sent from the washing and extraction machine 1 to the washing and extraction circulating water tank 4 for buffering.

[0057] Combination Figure 2 As shown, the stem washing circulating water tank 4 and the integrated washing and extraction machine 1 are connected by two pipelines. The stem washing water in the stem washing circulating water tank 4 can be sent to the integrated washing and extraction machine 1. The stem water storage tank 9 adds hot water from the stems to the integrated washing and extraction machine 1 for dilution. After the integrated washing and extraction machine 1 stirs for a specified time, the stem-water mixture is sent from the integrated washing and extraction machine 1 to the stem buffer tank 5 for buffering, then to the stem defibering machine 2 for defibering, and then to the stem desqueezer 3 for desqueezing. The desqueezed liquid enters the secondary stem liquid tank 7 for buffering. The desqueezed solid phase is buffered in the stem buffer silo and then sent to the high-consistency pulper to mix with tobacco dust for extraction. The washing process can be repeated multiple times. The specific washing process can be preset. The water supply during washing can be provided from the stem water storage tank 9 or from the stem washing circulating water tank 4.

[0058] 3) When the process path is one wash and one extraction: that is, one washing and one extraction are performed. (Combined with...) Figure 3 As shown, the cleaning process begins first. The tobacco stem storage tank 9 adds washing water to the integrated washing and extraction machine 1, and the tobacco stem discharge tank 8 adds tobacco material to the integrated washing and extraction machine 1. After the integrated washing and extraction machine 1 stirs for a specified time, the washing liquid is sent from the integrated washing and extraction machine 1 to the washing and extraction circulating water tank 4, completing the cleaning process. The cleaning process can be referred to in step 2).

[0059] Tobacco stem water storage tank 9 adds hot water to the washing and extraction machine 1 for dilution, and additive silo 10 adds extraction additives to the washing and extraction machine 1. An extract is formed in the washing and extraction machine 1. After the washing and extraction machine 1 is stirred for a specified time, the stem-water mixture is sent from the washing and extraction machine 1 to the tobacco stem buffer tank 5 for buffering, then to the tobacco stem defibering machine 2 for defibering, and then to the tobacco stem desqueezer 3 for desqueezing. The desqueezed liquid is sent to the primary stem liquid tank 6 for buffering, and then to the stem liquid rectangular screen in the refining and concentration section. The desqueezed solid phase is buffered in the tobacco stem buffer silo and then sent to the high-concentration pulper to be mixed with tobacco dust for extraction.

[0060] 4) When the process route is one wash and two extractions: that is, one washing and two extractions are performed. (Combined with...)Figure 4 As shown in the figure, the tobacco stem water storage bin 9 adds tobacco stem hot water dilution to the washing and extraction all-in-one machine 1, the additive bin 10 adds extraction additives to the washing and extraction all-in-one machine 1, and the washing and extraction all-in-one machine 1 is stirred for a specified time, after which the tobacco stem liquid is sent to the tobacco stem washing circulating water tank 4 to complete the cleaning process. The cleaning process can refer to the cleaning process in step 2).

[0061] As shown in the figure, the tobacco stem water storage bin 9 adds tobacco stem hot water dilution to the washing and extraction all-in-one machine 1, the additive bin 10 adds extraction additives to the washing and extraction all-in-one machine 1, and the washing and extraction all-in-one machine 1 is stirred for a specified time, after which the tobacco stem liquid is sent to the tobacco stem washing circulating water tank 4 to complete the cleaning process. The cleaning process can refer to the cleaning process in step 2).

[0062] As shown in the figure, the tobacco stem water storage bin 9 adds tobacco stem hot water dilution to the washing and extraction all-in-one machine 1, the additive bin 10 adds extraction additives to the washing and extraction all-in-one machine 1, and the washing and extraction all-in-one machine 1 is stirred for a specified time, after which the tobacco stem liquid is sent to the tobacco stem washing circulating water tank 4 to complete the cleaning process. The cleaning process can refer to the cleaning process in step 2).

[0063] 5) When the process path is not washed and extracted once: that is, no cleaning is done, and only one extraction is performed. In combination with Figure 5 , the tobacco stem water storage bin 9 adds tobacco stem hot water dilution to the washing and extraction all-in-one machine 1, the additive bin 10 adds extraction additives to the washing and extraction all-in-one machine 1, the tobacco stem falling bin 8 adds tobacco material to the washing and extraction all-in-one machine 1, and the washing and extraction all-in-one machine 1 is stirred for a specified time to complete one extraction; the tobacco stem water mixture is sent from the washing and extraction all-in-one machine 1 to the tobacco stem buffer tank 5 for buffering, then enters the tobacco stem defiberer 2 for defiberation, and then enters the tobacco stem wringer 3 for wringing; the wrung solid phase is buffered in the tobacco stem buffer bin and then sent to the high-concentration pulper for mixing and extraction with tobacco dust; the wrung liquid is buffered in the first-stage tobacco stem liquid tank 6 and then sent to the tobacco stem liquid rectangular screen in the refining and concentration section.

[0064] 6) When the process path is not washed and extracted twice: that is, no cleaning is done, and two extractions are performed. For example Figure 6 As shown in the figure, the tobacco stem water storage bin 9 adds tobacco stem hot water dilution to the washing and extraction all-in-one machine 1, the additive bin 10 adds extraction additives to the washing and extraction all-in-one machine 1, and the washing and extraction all-in-one machine 1 is stirred for a specified time, after which the tobacco stem liquid is sent to the tobacco stem washing circulating water tank 4 to complete the cleaning process. The cleaning process can refer to the cleaning process in step 2).

[0065] As shown in the figure, the tobacco stem water storage bin 9 adds tobacco stem hot water dilution to the washing and extraction all-in-one machine 1, the additive bin 10 adds extraction additives to the washing and extraction all-in-one machine 1, and the washing and extraction all-in-one machine 1 is stirred for a specified time, after which the tobacco stem liquid is sent to the tobacco stem washing circulating water tank 4 to complete the cleaning process. The cleaning process can refer to the cleaning process in step 2).

[0066] The flexible washing and extracting process provided by the present application can realize specific processes such as quantitative buffering of tobacco stems, washing and extracting of tobacco stems, defibration and dewatering of stem materials, and buffering of stem liquid, and is suitable for extracting tobacco stems for paper-making method reconstituted tobacco. The paper-making method reconstituted tobacco tobacco stem extraction can be realized by means of the tobacco stem flexible washing and extracting system to realize five kinds of tobacco stem washing and extracting processes, i.e., washing only and not extracting (washing stems), washing and extracting once, washing and extracting twice, washing and extracting once, and washing and extracting twice, realize water resource recycling, and effectively reduce production cost. The flexible washing and extracting process can be suitable for different batches of raw materials and different product demands, improve the paper-making method reconstituted tobacco stem extraction efficiency, and improve the quality of tobacco stem extracting liquid and the quality of reconstituted tobacco products.

[0067] The flexible washing and extracting process of the present application eliminates the problems of tobacco stem softening and high cost caused by solid-liquid separation and stem material transfer after washing stems, in view of the traditional process of washing and extracting tobacco stems in steps. The flexible extraction of tobacco stems is realized according to the characteristics of raw materials and product demands, the extraction process is stable and controllable, and more product demands can be met.

[0068] In view of the problem of water resource waste in the process of washing and extracting tobacco stems, the washing stems hot water and low-concentration secondary stem liquid of the present application are recycled to reduce water resource consumption, and at the same time, improve the extraction rate of tobacco stems and the quality of tobacco stem extracting liquid.

[0069] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tobacco leaf and stem flexible stripping system, characterized by, The device comprises a washing and extracting integrated machine (1), a tobacco stem fiber separating machine (2), a tobacco stem squeezing machine (3), a tobacco stem washing circulating water tank (4), a tobacco stem buffer tank (5), a first grade tobacco stem liquid tank (6), a second grade tobacco stem liquid tank (7), a tobacco stem discharging bin (8), a tobacco stem water storage bin (9), an additive bin (10) and a controller. The tobacco stem discharging bin (8) is used for storing tobacco to be processed and providing the tobacco to the washing and extracting integrated machine (1) during washing and extracting; the tobacco stem water storage bin (9) is used for storing water for tobacco and providing water to the washing and extracting integrated machine (1) during washing and extracting; the additive bin (10) is used for storing extracting additives and providing the additives to the washing and extracting integrated machine (1) during extracting. The washing and extracting integrated machine (1) is used for stirring tobacco during washing and extracting; the tobacco stem washing circulating water tank (4) is used for storing tobacco washing water discharged from the washing and extracting integrated machine (1) during washing. The tobacco stem buffer tank (5) is used for receiving tobacco stem water mixture discharged from the washing and extracting integrated machine (1) during washing and extracting and sending the mixture to the tobacco stem fiber separating machine (2) for fiber separation; the tobacco stem fiber separating machine (2) is used for separating tobacco during washing and extracting; the tobacco stem squeezing machine (3) is used for receiving separated tobacco and squeezing the tobacco during washing and extracting. The first grade tobacco stem liquid tank (6) is used for storing liquid discharged from the washing and extracting integrated machine (1) or the tobacco stem squeezing machine (3) during extracting; the second grade tobacco stem liquid tank (7) is used for storing liquid discharged from the tobacco stem squeezing machine (3) during extracting and can send the liquid to the washing and extracting integrated machine (1) or a high concentration pulper. The controller is used for controlling a process path to realize any one of the following process paths: one washing and no extracting, one washing and one extracting, one washing and two extractions, no washing and one extracting and no washing and two extractions.

2. The tobacco leaf and stem flexible stripping system of claim 1, wherein, The washing and extracting integrated machine (1) comprises a washing and extracting shell (11); the inside of the washing and extracting shell (11) is divided into upper and lower parts by a porous partition plate (12) to allow liquid to flow downward; an agitator (13) is arranged in the washing and extracting shell (11) to stir tobacco accumulated above the porous partition plate (12). A liquid discharge channel (111) is arranged at the bottom of the washing and extracting shell (11) and a solid channel (112) for discharging tobacco is arranged on the side wall of the washing and extracting shell (11).

3. The tobacco leaf and stem flexible stripping system of claim 2, wherein, The agitator (13) is a spiral elevator rotating around a vertical rotating shaft to lift tobacco upward.

4. The tobacco leaf and stem flexible stripping system of claim 1, wherein, The tobacco stem squeezing machine (3) comprises a squeezing shell (31) and a spiral shaft (32); the inner cavity of the squeezing shell (31) is tapered along the axial direction; the spiral shaft (32) rotates to drive tobacco to move along the axial direction and be squeezed.

5. A flexible stripping process, characterized in that, The device comprises: selecting one process path from one washing and no extracting, one washing and one extracting, one washing and two extractions, no washing and one extracting and no washing and two extractions; when the process path is one washing and no extracting: the tobacco stem water storage bin (9) adds tobacco washing water into the washing and extracting integrated machine (1) and the tobacco stem discharging bin (8) adds tobacco into the washing and extracting integrated machine (1); after the washing and extracting integrated machine (1) stirs for a specified time, tobacco washing liquid is sent from the washing and extracting integrated machine (1) to the tobacco stem washing circulating water tank (4). The tobacco stem water storage bin (9) adds tobacco stem hot water dilution to the washing and extraction integrated machine (1), the tobacco stem water mixture is sent from the washing and extraction integrated machine (1) to the tobacco stem buffer tank (5) after stirring for a specified time, then enters the tobacco stem defiberer (2), and then enters the tobacco stem squeezing machine (3); the squeezed liquid enters the secondary stem liquid tank (7) for buffering; When the process path is one washing and one extraction, the tobacco stem water storage bin (9) adds tobacco stem washing water to the washing and extraction integrated machine (1), and the tobacco stem falling bin (8) adds tobacco material to the washing and extraction integrated machine (1); the tobacco stem liquid is sent from the washing and extraction integrated machine (1) to the tobacco stem circulating water tank (4) after stirring for a specified time; The tobacco stem water storage bin (9) adds tobacco stem hot water dilution to the washing and extraction integrated machine (1), and the additive bin (10) adds extraction additives to the washing and extraction integrated machine (1), the tobacco stem water mixture is sent from the washing and extraction integrated machine (1) to the tobacco stem buffer tank (5) after stirring for a specified time, then enters the tobacco stem defiberer (2), and then enters the tobacco stem squeezing machine (3); the squeezed liquid enters the primary stem liquid tank (6) for buffering; When the process path is one washing and two extractions, the tobacco stem water storage bin (9) adds tobacco stem washing water to the washing and extraction integrated machine (1), and the tobacco stem falling bin (8) adds tobacco material to the washing and extraction integrated machine (1); the tobacco stem liquid is sent from the washing and extraction integrated machine (1) to the tobacco stem circulating water tank (4) after stirring for a specified time; The tobacco stem water storage bin (9) adds tobacco stem hot water dilution to the washing and extraction integrated machine (1), and the additive bin (10) adds extraction additives to the washing and extraction integrated machine (1), the tobacco stem water mixture is sent from the washing and extraction integrated machine (1) to the tobacco stem buffer tank (5) after stirring for a specified time, then enters the tobacco stem defiberer (2), and then enters the tobacco stem squeezing machine (3); the squeezed liquid enters the primary stem liquid tank (6) for buffering; The secondary stem liquid tank (7) adds secondary stem liquid to the washing and extraction integrated machine (1), and the additive bin (10) adds extraction additives to the washing and extraction integrated machine (1), the tobacco stem water mixture is sent from the washing and extraction integrated machine (1) to the tobacco stem buffer tank (5) after stirring for a specified time, then enters the tobacco stem defiberer (2), and then enters the tobacco stem squeezing machine (3); the squeezed liquid enters the secondary stem liquid tank (7) for buffering; When the process path is no washing and one extraction, the tobacco stem water storage bin (9) adds tobacco stem hot water dilution to the washing and extraction integrated machine (1), the additive bin (10) adds extraction additives to the washing and extraction integrated machine (1), the tobacco stem falling bin (8) adds tobacco material to the washing and extraction integrated machine (1), and the washing and extraction integrated machine (1) completes one extraction after stirring for a specified time; the tobacco stem water mixture is sent from the washing and extraction integrated machine (1) to the tobacco stem buffer tank (5) for buffering, then enters the tobacco stem defiberer (2), and then enters the tobacco stem squeezing machine (3); the squeezed liquid enters the primary stem liquid tank (6) for buffering; When the process path is not washed two times, the tobacco stem water storage bin (9) adds tobacco stem hot water dilution to the washing and extraction all-in-one machine (1), the additive bin (10) adds extraction additives to the washing and extraction all-in-one machine (1), the tobacco stem falling bin (8) adds tobacco material to the washing and extraction all-in-one machine (1), the washing and extraction all-in-one machine (1) stirs for a specified time, and the stem liquid enters the first-stage stem liquid tank (6) for buffering; The second-stage stem liquid tank (7) adds second-stage stem liquid to the washing and extraction all-in-one machine (1), the additive bin (10) adds extraction additives to the washing and extraction all-in-one machine (1), the washing and extraction all-in-one machine (1) stirs for a specified time, the stem water mixed material is sent from the washing and extraction all-in-one machine (1) to the tobacco stem buffering tank (5) for buffering, then enters the tobacco stem defibrating machine (2) for defibrating, and then enters the tobacco stem squeezing machine (3) for squeezing; the squeezed liquid enters the second-stage stem liquid tank (7) for buffering.

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