Tobacco roller with spiral flow guide strips on inner wall and method for adding feed liquid into tobacco shreds and refrigerating dried tobacco shreds

Abstract

The invention discloses a tobacco roller with a spiral flow guide strip on the inner wall and a method for adding feed liquid into tobacco shreds and refrigerating dried tobacco shreds. The tobacco roller comprises a roller body, the spiral flow guide strip, a feed liquid injection pipe or a chilled water input pipe, a chilled water output pipe and the like, and the spiral flow guide strip is installed on the inner wall of the roller body; the cross section of the spiral flow guide strip is a sine curve surface, adopts a half-wavelength (lambda / 2) wave crest design, and is made of a stainless steel metal plate or a copper metal plate with the thickness of 1-2mm. When the essence is added by using the closed spiral flow guide strip, the injection holes with the diameters of 0.5-2mm are uniformly formed in the sine wave peak surface of the spiral flow guide strip, so that the essence is diffused to each space area in the roller, and the perfuming permeability is improved. When the device is used for refrigerating dried tobacco shreds, chilled water is input into the spiral flow guide strip to quickly refrigerate the tobacco shreds, so that the tobacco shreds are shaped and curled to improve the perfume absorption effect. The material loosening and conveying effect can be improved by replacing harrow nails in some rollers, the breakage rate is reduced, the material loosening and conveying device can be used for feed liquid adding of tobacco shreds or rapid refrigeration of dried tobacco shreds, and the process effect is obvious.

Description

Technical Field

[0001] The invention belongs to the field of tobacco, relates to cigarette production technology, and specifically relates to a tobacco roller with spiral guide strips on the inner wall and a method for adding liquid to tobacco shreds and cooling and baking the tobacco shreds. Background Art

[0002] In the tobacco processing industry, the application of rollers is very common. The tobacco roller is a hollow cylinder with a diameter of several meters. According to the layout, it can be divided into horizontal conveyor roller lines, inclined conveyor roller lines, etc. It completes some important tobacco processes, such as loosening tobacco materials, adding liquid, heating or screening, etc. Therefore, tobacco rollers are indispensable in cigarette production.

[0003] For the tobacco-making process, an inclined conveyor roller line is often used. Tobacco is input into a relatively closed roller and liquid material such as flavors is sprayed. The circular motion of the roller allows the tobacco to be fully mixed in the roller to improve the taste of the cigarette. The inclined characteristics of the conveyor roller line, the gravity of the material and the circular motion properties of the roller are used to transport the tobacco from one end of the roller to the other.

[0004] According to the physical characteristics, the circumferential angle of the material on the circumferential surface from the bottom of the circumferential surface with the circumferential movement of the drum will not exceed 90°. Therefore, cylindrical rake nails are often installed on the inner wall of the drum, some are installed on the generatrix of the inner wall of the drum, and some are distributed in a spiral manner, or the circumferential angle of the material movement exceeds 90°, so as to improve the looseness and flavoring permeability of the tobacco in the drum; since the flow rate of tobacco in the drum is very large, sometimes up to 10t / h, the inventor believes that the loosening method using rake nails may not be the best. Moreover, due to the physical characteristics of tobacco that is easy to break and break, the drum rotation speed and flow rate are relatively high, so it is difficult to avoid increasing the tobacco breaking rate. If, through scientific research, the use of curved surface technology can reduce the tobacco breaking rate, even if it is only reduced by 0.1%, the process effect will be improved.

[0005] Since the flavor is sprayed at a specific position in the drum, the looseness and uniformity of the tobacco in the drum are important for the flavoring permeability. Therefore, it is crucial to study the flavoring method so that the flavor can be evenly distributed to various spatial areas in the drum to improve the flavoring permeability.

[0006] In addition, for the tobacco drying process through the tobacco drying machine, the outlet temperature of the tobacco is 50.0℃~70.0℃. In order to facilitate the next process to complete the preparation, flavoring and mixing of tobacco, stem shreds, expanded tobacco, thin shreds, etc., so that the mixed shreds can fully absorb the spices, the tobacco temperature is reduced to ≤45℃, or even to the best workshop constant temperature such as 25℃, to ensure that the dried tobacco is quickly shaped, curled and elastic, with a high filling value, and improves the process effects such as spice absorption. It can also be studied to use rollers to complete it, or it can replace the vortex tubes and curved refrigeration plates in the "rapid cooling device for dried tobacco on the tobacco production line (ZL2023113548615)".

[0007] In order to solve the above-mentioned problems, the present invention is proposed. Summary of the invention

[0008] To solve at least one aspect of the above problems, the present invention provides a tobacco roller with a spiral guide strip on the inner wall and a method for adding liquid to tobacco and cooling the dried tobacco, comprising a roller, a spiral guide strip, a liquid injection pipe or a chilled water input pipe and a chilled water output pipe, etc. The spiral guide strip is installed on the inner wall of the roller; the cross section of the spiral guide strip is a sinusoidal curve surface, adopts a half-wavelength (λ / 2) wave crest design, and is made of a stainless steel sheet or copper sheet with a thickness of 1 to 2 mm. When adding flavors with a closed spiral guide strip, a liquid injection pipe is designed, and uniformly distributed ￠0.5 to 2 mm injection holes are designed on the sinusoidal wave crest surface of the spiral guide strip, so that the flavor is dispersed to various spatial areas in the roller, thereby improving the permeability of flavoring. When used for cooling the dried tobacco, chilled water is input into the spiral guide strip to quickly cool the tobacco, so that the tobacco is shaped and curled to improve the absorption effect of the flavors. The invention replaces the rake nails in some rollers to improve the loosening and conveying effect of materials and reduce the crushing rate. It can be used for adding liquid to tobacco shreds or quickly cooling tobacco shreds after baking, and the process effect is obvious.

[0009] The present invention provides a tobacco drum with a spiral guide strip on the inner wall, which comprises a drum 1 and a spiral guide strip 2, wherein the spiral guide strip 2 is installed on the inner wall of the drum 1;

[0010] The cross section of the spiral guide strip 2 is a sinusoidal curve surface, and a wave crest design of half a wavelength (λ / 2) is adopted, and the function curve equation is y=sin(ωx), ω<1;

[0011] The pitch t of the spiral guide strip 2 is smaller than the length L of the drum 1, and 1 pitch t is used.

[0012] Preferably, the number of the spiral guide strips 2 installed on the inner wall of the drum 1 is evenly distributed 4 to 8;

[0013] The spiral guide strip 2 is made of material with a thickness of 1 to 2 mm.

[0014] The spiral guide strip 2 has baffles 5 at both ends.

[0015] Preferably, the inner wall diameter of the drum 1 is The length of the spiral guide strip 2

[0016] Preferably, the spiral guide strip 2 is mounted on the inner wall of the drum 1 by welding or screw connection;

[0017] The helical angle of the spiral guide strip 2 is Use this helix angle The position of the spiral line is marked on the inner wall of the drum 1 for welding, or the through hole 3 of the spiral guide strip 2 is designed for threaded installation.

[0018] Preferably, the spiral guide strip 2 is made of stainless steel sheet or copper sheet;

[0019] The cross section of the spiral guide strip 2 is a sinusoidal curve surface which is pressed by a mold.

[0020] Preferably, the tobacco drum with spiral guide strips on the inner wall is used in conjunction with a liquid injection pipe 4 to add liquid to the tobacco shreds in the drum 1. The liquid injection pipe 4 is connected to the spiral guide strip 2. The sinusoidal peak surface of the spiral guide strip 2 is provided with an injection hole 6 with an aperture of

[0021] Preferably, when the injection hole 6 is processed on the sinusoidal wave peak surface of the spiral guide strip 2, the normal line processing of the processing point on the curved surface can be adopted.

[0022] Preferably, the tobacco drum with spiral guide strips on the inner wall is used in conjunction with a chilled water inlet pipe 7 and a chilled water outlet pipe 8 to cool the dried tobacco in the drum 1. The chilled water inlet pipe 7 and the chilled water outlet pipe 8 are respectively connected to the two ends of the spiral guide strip 2, so that the chilled water enters the spiral guide strip 2 through the chilled water inlet pipe 7 and flows out through the chilled water outlet pipe 8.

[0023] The second aspect of the present invention provides a method for adding liquid to shredded tobacco. Using the tobacco roller with a spiral guide strip on the inner wall as described in the first aspect of the present invention, the method for adding liquid to shredded tobacco includes the following steps: connecting the liquid injection tube 4 with the spiral guide strip 2, and then adding liquid (such as flavor) to the spiral guide strip 2 through the liquid injection tube 4, and using compressed gas to spray the liquid in the spiral guide strip 2 from the injection hole 6, and the liquid is mixed with the shredded tobacco in the roller 1, thereby adding liquid to the shredded tobacco.

[0024] The third aspect of the present invention provides a method for cooling dried tobacco shreds, using the tobacco roller with spiral guide strips on the inner wall as described in the first aspect of the present invention, the method for cooling dried tobacco shreds includes the following steps: the chilled water inlet pipe 7 and the chilled water outlet pipe 8 are respectively connected to the two ends of the spiral guide strip 2, so that the chilled water enters the spiral guide strip 2 through the chilled water inlet pipe 7 and flows out through the chilled water outlet pipe 8, so that the chilled water flowing in the spiral guide strip 2 absorbs the heat of the dried tobacco shreds in the roller 1, thereby cooling the dried tobacco shreds.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Since the roller used in the tobacco field mainly completes certain processes such as loosening, mixing, and conveying of tobacco materials, if the inner wall of the roller is installed with a spiral guide strip, it will be beneficial to the full loosening and mixing of the tobacco materials. Due to the spiral guide effect, the material conveying will be smoother.

[0027] 2. For some rollers with cylindrical rake nails installed on the inner wall, especially for the tobacco making process, due to the large flow rate of tobacco shreds and the high rotation speed of the roller, the use of rake nails to achieve loose and uniform distribution in the roller will undoubtedly cause more tobacco shreds to be broken. Moreover, the loosening effect is not good. Therefore, when the spiral guide strips of the present invention are used instead of the rake nails, the loosening effect will be more significant, the tobacco shreds breaking rate will be reduced, and the raw material cost can be reduced accordingly.

[0028] 3. Since the cross section of the spiral guide strip is a sinusoidal curved surface, according to mechanical characteristics, the continuous curved surface has the lowest material crushing effect, and the sinusoidal wave peak has a higher loosening effect. Therefore, when adding liquid such as flavors in the drum, the effect is better; and because the spiral guide strip has a large pitch and a large spiral angle, and a large number of spiral wire heads are used, the tobacco material is transported smoothly.

[0029] 4. To complete the addition of liquid such as flavors to the tobacco in the drum, an important process is to achieve the permeability of tobacco flavoring. Generally, the drum flavoring is at a certain point. If the injection hole 6 is designed on the sinusoidal wave surface of the spiral guide strip, the flavor will be sprayed at more positions in the drum through compressed gas, and the processing direction of the injection hole 6 can be completed using the normal of the point on the curve surface. The flavor can be evenly distributed to various spatial areas in the drum. Therefore, the tobacco flavoring is more transparent and the process effect is better.

[0030] 5. The temperature of the tobacco shreds after drying in the tobacco drying machine is very high, which is not conducive to the next process of completing the preparation, flavoring and mixing of tobacco shreds, stem shreds, expanded tobacco shreds, thin shreds, etc., and making the mixed shreds fully absorb the spices. The use of the roller refrigeration and drying of tobacco shreds in the present invention has a better effect. Since there is abundant chilled water in general silk workshops, it only needs to be introduced into the spiral guide strips in the drum through a high-pressure pipe, and then flow out through the chilled water output pipe to ensure that the drum is always at a low temperature, which is conducive to rapid refrigeration of the dried tobacco shreds and improve its process effect. Therefore, the recycling of chilled water has obvious benefits.

[0031] 6. Since the spiral guide strip is made of thin stainless steel or copper, the spiral line installed on the inner wall of the drum has a large pitch and a large spiral angle. Therefore, the spiral guide strip is longer and has better plasticity. It is also easy to mark or label the corresponding spiral line on the inner wall of the drum. Therefore, the installation of the spiral guide strip on the inner wall of the drum is convenient, quick and low-cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0033] Names of reference numerals in the accompanying drawings:

[0034] Figure 1 Schematic diagram of the design principle of a tobacco drum with spiral guide strips on the inner wall according to an embodiment of the present invention;

[0035] Figure 2 is a schematic diagram of the dimensions of a tobacco drum according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of a design of an embodiment of the spiral guide strip of the present invention;

[0037] Figure 4 The present invention Figure 3 AA cross-section diagram of ;

[0038] Figure 5 This is a schematic diagram of the shape of a spiral guide strip with a pitch of 1 in one embodiment of the present invention;

[0039] Figure 6 It is a design schematic diagram of another embodiment of the spiral guide strip of the present invention for processing the jet hole on the sine wave surface;

[0040] Figure 7 This is a schematic diagram of another embodiment of the spiral guide strip of the present invention, in which chilled water input and output are designed at both ends.

[0041] Figure 8 It is a schematic diagram of mold pressing of the sinusoidal wave surface of the spiral guide strip according to an embodiment of the present invention.

[0042] In the attached drawings: 1. Roller; 2. Spiral guide strip; 3. Through hole; 4. Liquid injection pipe; 5. Baffle; 6. Spray hole; 7. Chilled water input pipe; 8. Chilled water output pipe; 9. Concave part; 10. Protruding part; 9-1. Concave part sinusoidal wave; 10-1. Protruding part sinusoidal wave. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with embodiments.

[0044] Those skilled in the art will appreciate that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0045] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0049] Example

[0050] Referring to the figures, the present invention provides a tobacco drum with spiral guide strips on the inner wall, which includes a drum 1 and spiral guide strips 2, wherein the spiral guide strips 2 are installed on the inner wall of the drum 1; the number of spiral guide strips 2 installed on the inner wall of the drum 1 is evenly distributed 4 to 8. Figure 1 , select 4 spiral guide strips 2 for installation.

[0051] The cross section of the spiral guide strip 2 is a sinusoidal curve surface, and a wave crest design of half a wavelength (λ / 2) is adopted, and the function curve equation is y=sin(ωx), ω<1;

[0052] The pitch t of the spiral guide strip 2 is smaller than the length L of the drum 1, and 1 pitch t is used.

[0053] The spiral guide strip 2 is made of material with a thickness of 1 to 2 mm.

[0054] The inner wall diameter of the drum 1 is The length of the spiral guide strip 2

[0055] The spiral guide strip 2 is mounted on the inner wall of the drum 1 by welding or screw connection;

[0056] The helical angle of the spiral guide strip 2 is Use this helix angle The position of the spiral line is marked on the inner wall of the drum 1 for welding, or the through hole 3 of the spiral guide strip 2 is designed for threaded installation.

[0057] The spiral guide strip 2 is made of stainless steel sheet.

[0058] like Figure 2 , Schematic diagram of the dimensions of the tobacco roller in the embodiment. The inner wall diameter of the roller is The length of the drum is L = 4200mm, so the design pitch is t = 4000mm, then the length of the spiral line is

[0059] Figures 3-4It is a design method for an embodiment of a spiral guide strip 2, which is made of 2mm stainless steel and is installed by M5 screws through its through holes 3 and the roller 1; the design function equation of the sinusoidal curve surface is y=100sin(2πx / 157.078), that is, the amplitude is 100mm, the wavelength λ=157.078mm, that is, ω=1 / 4.

[0060] If the through hole 3 is not involved, the installation can be completed by welding along the spiral line without screws and rollers. Figure 5 Schematic diagram of the shape of a spiral guide strip with a pitch of 1, which is formed by welding on the inner wall of the drum.

[0061] When adding flavors with the closed spiral guide strip 2, the tobacco drum with the spiral guide strip on the inner wall is used in conjunction with a liquid injection pipe 4 to add liquid to the tobacco in the drum 1. The liquid injection pipe 4 is connected to the spiral guide strip 2. The sinusoidal peak surface of the spiral guide strip 2 is designed with an injection hole 6 with an aperture of When the injection hole 6 is processed on the sinusoidal wave peak surface of the spiral guide strip 2, the normal line processing of the processing point on the curved surface can be used. The method of adding liquid to the tobacco shreds comprises the following steps: connecting the liquid injection pipe 4 with the spiral guide strip 2, and then adding flavors into the spiral guide strip 2 through the liquid injection pipe 4, and using compressed gas to make the liquid in the spiral guide strip 2 spray out from the injection hole 6, and the liquid is mixed with the tobacco shreds in the drum 1, so as to add liquid to the tobacco shreds.

[0062] Figure 6 This is another design method of the spiral guide strip 2 embodiment, which has the function of spraying fragrance.

[0063] When adding essence with the closed spiral guide strip 2, a liquid injection pipe 4 is designed, and a spray hole 6 is designed on the sinusoidal wave peak surface of the spiral guide strip 2, and the hole diameter is designed to be When the injection hole 6 is processed on the sinusoidal wave peak surface of the spiral guide strip 2, the normal line processing of the processing point on the curved surface can be used, such as Figure 5 The injection hole 6 is processed as a normal line to make the essence spray more divergent.

[0064] Figure 6 In the embodiment, the two ends of the spiral guide strip 2 are welded with baffles 5 and the bottom is welded with a base plate so that the interior of the spiral guide strip 2 is hollow and airtight. A liquid injection pipe 4 is installed so that the essence can be sprayed through the spray hole 6 by air pressure.

[0065] When the sealed spiral guide strip 2 is used to cool the dried tobacco, the tobacco drum with the spiral guide strip on the inner wall is used in conjunction with the chilled water input pipe 7 and the chilled water output pipe 8 to cool the dried tobacco in the drum 1. The chilled water input pipe 7 and the chilled water output pipe 8 are respectively connected to the two ends of the spiral guide strip 2, so that the chilled water enters the spiral guide strip 2 through the chilled water input pipe 7 and flows out through the chilled water output pipe 8. The method for cooling the dried tobacco comprises the following steps: the chilled water input pipe 7 and the chilled water output pipe 8 are respectively connected to the two ends of the spiral guide strip 2, so that the chilled water enters the spiral guide strip 2 through the chilled water input pipe 7 and flows out through the chilled water output pipe 8, so that the chilled water flowing in the spiral guide strip 2 absorbs the heat of the dried tobacco in the drum 1, thereby cooling the dried tobacco.

[0066] like Figure 7 Another design method of the spiral guide strip 2 embodiment has a function of quickly cooling the dried tobacco.

[0067] Since the tobacco-making workshops all use air compressors on a large scale, the temperature of the chilled water they produce is very low. The chilled water is connected to the chilled water input pipe 7 through its high-pressure pipe, so that the chilled water enters the spiral guide strip 2 to reduce the temperature of the drum 1 and quickly cool the dried tobacco. The chilled water is then output through the chilled water output pipe 8.

[0068] In order to improve the rapid cooling efficiency of the dried tobacco, the material of the spiral guide strip 2 can be copper, preferably according to the thermal conductivity and thermal conductivity coefficient.

[0069] The cross section of the spiral guide strip 2 is a sinusoidal curve surface which is pressed by a mold.

[0070] like Figure 8 The spiral guide strip is made of stainless steel sheet with a thickness of 1 to 2 mm. Therefore, NC chip processing is not possible. The best method is to use mold production.

[0071] Alternatively, the convex sine wave 10-1 on the convex part 10 and the concave sine wave 9-1 on the concave part 9 may be made of die steel, thereby pressing the sine wave surface of the spiral guide strip; or the injection hole 6 may be pre-made on the sheet metal.

[0072] If precise dimensions are required, the curve integral of the sine curve can be used for calculation.

[0073] Finally, the helical angle of the designed spiral guide strip 2 is Mark the inner wall of the drum 1 and install the spiral guide strip 2 by welding or other methods. Figure 1 State.

[0074] It should be noted that in this embodiment, because t = 4000 mm, the pitch is large. The spiral angle is large, and the spiral guide strip 2 is made of thin stainless steel. Therefore, the tension of the spiral guide strip 2 during installation on the inner wall of the drum is not large, and the spiral guide strip 2 can be easily bent into a spiral and installed in the drum.

[0075] As for the uniformity of flavoring the tobacco, since the injection hole 6 can be designed on the crest of the spiral guide strip, the crest height can be increased. In y=sin(ωx), a smaller ω is taken, and the effect will be better.

[0076] The above are only preferred embodiments of the present invention, which are only illustrative and not restrictive. The structures and connection modes of the components in the present invention can be changed, and any equivalent transformations and improvements based on the technical solution of the present invention should not be excluded from the protection scope of the present invention.

Claims

1. A tobacco drum with a spiral guide strip on the inner wall, characterized in that: It comprises a drum (1) and a spiral guide strip (2), wherein the spiral guide strip (2) is installed on the inner wall of the drum (1); The cross section of the spiral guide strip (2) is a sinusoidal curve surface, adopts a wave crest design of half a wavelength (λ / 2), and the function curve equation is y=sin(ωx), ω<1; The pitch t of the spiral guide strip (2) is smaller than the length L of the roller (1), and 1 pitch t is used.

2. The tobacco drum with spiral guide strips on the inner wall according to claim 1, characterized in that: The number of the spiral guide strips (2) installed on the inner wall of the drum (1) is evenly distributed at 4 to 8; The material thickness of the spiral guide strip (2) is 1 to 2 mm; The spiral guide strip (2) has baffles (5) at both ends.

3. The tobacco drum with spiral guide strips on the inner wall according to claim 1, characterized in that: The inner wall diameter of the drum (1) is ￠D, and the length of the spiral guide strip (2) is 4. The tobacco drum with spiral guide strips on the inner wall according to claim 1, characterized in that: The spiral guide strip (2) is mounted on the inner wall of the drum (1) by welding or screw connection; The helical angle of the spiral guide strip (2) is Use this helix angle The position of the spiral line is marked on the inner wall of the drum (1) for welding, or the through hole (3) of the spiral guide strip (2) is designed for threaded installation.

5. The tobacco drum with spiral guide strips on the inner wall according to claim 1, characterized in that: The spiral guide strip (2) is made of stainless steel sheet or copper sheet; The cross section of the spiral guide strip (2) is a sinusoidal curve surface and is pressed using a mold.

6. The tobacco drum with spiral guide strips on the inner wall according to claim 1, characterized in that: The tobacco drum with spiral guide strips on the inner wall is used in conjunction with a liquid injection pipe (4) to add liquid to the tobacco shreds in the drum (1); the liquid injection pipe (4) is connected to the spiral guide strips (2); a spray hole (6) is designed on the sinusoidal peak surface of the spiral guide strips (2); the hole diameter is 7. The tobacco drum with spiral guide strips on the inner wall according to claim 6, characterized in that: When the injection hole (6) is machined on the sinusoidal wave peak surface of the spiral guide strip (2), normal machining of the machining point on the curved surface can be used.

8. The tobacco drum with spiral guide strips on the inner wall according to claim 1, characterized in that: The tobacco roller with spiral guide strips on the inner wall is used in conjunction with a chilled water input pipe (7) and a chilled water output pipe (8) to cool the tobacco shreds after drying in the roller (1). The chilled water input pipe (7) and the chilled water output pipe (8) are respectively connected to the two ends of the spiral guide strip (2), so that the chilled water enters the spiral guide strip (2) through the chilled water input pipe (7) and flows out through the chilled water output pipe (8).

9. A method for adding liquid to shredded tobacco, characterized in that: A method for adding liquid to shredded tobacco using a tobacco roller having an inner wall with spiral guide strips as described in any one of claims 6 to 7 comprises the following steps: connecting the liquid injection tube (4) with the spiral guide strips (2), then adding liquid to the spiral guide strips (2) through the liquid injection tube (4), and using compressed gas to cause the liquid in the spiral guide strips (2) to be ejected from the injection holes (6), and the liquid is mixed with the shredded tobacco in the roller (1), thereby adding liquid to the shredded tobacco.

10. A method for cooling and drying shredded tobacco, characterized in that: Using the tobacco roller with spiral guide strips on the inner wall as described in claim 8, the method for cooling the dried tobacco comprises the following steps: the chilled water input pipe (7) and the chilled water output pipe (8) are respectively connected to the two ends of the spiral guide strip (2), so that the chilled water enters the spiral guide strip (2) through the chilled water input pipe (7) and flows out through the chilled water output pipe (8), so that the chilled water flowing in the spiral guide strip (2) absorbs the heat of the dried tobacco in the roller (1), thereby cooling the dried tobacco.

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