Methods for modifying the material guiding structure, cylinder, drum equipment, and internal structure of the cylinder

Abstract

This invention relates to a material guiding structure, comprising: a U-bolt; two nuts capable of threaded engagement with two branches of the U-bolt; a guide plate including two through holes, the distance between the two through holes corresponding to the distance between the two branches of the U-bolt; a fixed rake, the U-bolt surrounding the rake at a selected height, the rake abutting against a first surface of the guide plate, the ends of the two branches of the U-bolt passing through the through holes of the guide plate and threadedly engaging with the two nuts, the two nuts abutting against a second surface of the guide plate. The invention also relates to a cylinder and roller device including this material guiding structure, and a method for modifying the internal structure of the cylinder. This invention enables rapid disassembly, assembly, and switching of the internal structure of the cylinder, reducing modification costs and improving production efficiency.

Description

Technical Field

[0001] This invention relates to a material guiding structure that is easy to install, remove and replace, and a cylinder and roller device including the material guiding structure. This invention also relates to a method for modifying the internal structure of the cylinder. Background Technology

[0002] In cigarette processing workshops, most processes rely on rotary drum equipment, such as loosening and rehydrating tobacco leaves, moistening and adding ingredients, warming the leaves, drying the tobacco leaves on thin sheets, and adding flavoring. Rotary drum equipment plays an irreplaceable role in tobacco processing workshops because it offers advantages such as a well-sealed processing space, wide time adjustability, and broad applicability. During tobacco processing, the rotation of the drum ensures that the materials inside come into full contact with steam, water, flavorings, and other media, thereby rapidly increasing the moisture content and flavoring absorption rate of the materials. It is widely used in tobacco processing for tasks such as loosening and rehydrating tobacco leaves, warming and humidifying them, and adding flavorings.

[0003] Due to the widespread application of roller mill equipment, different internal structures are formed inside the roller using guide plates and / or rakes to meet different process requirements. Currently, the rakes and / or guide plates inside the roller are installed by welding. If adjustments to the internal structure of the roller are needed, the method of cutting and then welding is usually adopted, which consumes a lot of time and labor costs and is not conducive to structural modification.

[0004] Therefore, there is a need for a feed guide structure that is easy to load, unload, and replace, and whose internal structure can be quickly disassembled or replaced to adapt to different production needs, thereby reducing modification costs and improving the efficiency of tobacco production. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned technical problems and provide a material guiding structure that is easy to load, unload and replace, as well as a cylinder and roller device including the material guiding structure.

[0006] Another object of the present invention is to provide a method for modifying the internal structure of a cylinder.

[0007] This invention provides a material guiding structure, characterized in that the material guiding structure comprises: a U-bolt, the U-bolt including a U-shaped portion and two branches, the ends of the two branches having threads; two nuts capable of threaded engagement with the two branches of the U-bolt; a material guiding plate including two through holes, the distance between the two through holes corresponding to the distance between the two branches of the U-bolt, such that the two branches of the U-bolt can simultaneously pass through the two through holes of the material guiding plate, the material guiding plate including a first surface and a second surface opposite to the first surface; a fixed rake nail, the rake nail capable of being accommodated within the U-shaped portion of the U-bolt, the U-bolt surrounding the rake nail at a selected height, and the rake nail abutting against the first surface of the material guiding plate, the ends of the two branches of the U-bolt passing through the through holes of the material guiding plate and threadedly engaging with the two nuts, and the two nuts abutting against the second surface of the material guiding plate.

[0008] Preferably, the nut is a cap nut.

[0009] Preferably, the rake nails are fixed inside the drum body of the drum equipment by full welding.

[0010] Preferably, the rake nail is fixed inside the drum of the roller device by means of a threaded connection.

[0011] Preferably, the guide plate has a certain angle.

[0012] The present invention provides a cylindrical body, including an internal structure, wherein the internal structure includes at least one functional segment along the axial direction, characterized in that the functional segment includes a material guiding structure as described above, wherein the rake nail of the material guiding structure is fixed on the inner surface of the cylindrical body.

[0013] Preferably, the at least one functional section includes a feeding acceleration section, a discharging acceleration section, and a heating and rehydration section, a dispersing and mixing section, and a flow-blocking section located between the feeding acceleration section and the discharging acceleration section.

[0014] Preferably, the feeding acceleration section includes guide plates with equidistant, gradually varying heights, and the discharging acceleration section includes rakes.

[0015] Preferably, the warming and rehydration section includes a guide plate that gradually increases in temperature from low to high.

[0016] Preferably, the dispersing and mixing section includes guide plates of equal height.

[0017] Preferably, the flow-blocking section includes a guide plate of equal height and at an angle.

[0018] The present invention provides a roller device, characterized in that the roller device includes a cylinder as described above, the cylinder being able to rotate under the drive of a driving device, thereby processing the material contained in the cylinder, and the cylinder having a certain inclination angle.

[0019] Preferably, the roller device further includes: a discharge hood for discharging materials; a feed inlet for materials to enter the interior of the roller body; a nozzle for spraying media into the roller body; and a dust removal and dehumidification device for discharging waste gas and smoke.

[0020] Preferably, the roller device further includes: a front roller ring and a rear roller ring, a front support roller and a rear support roller, and support legs, wherein the roller body is driven by the front roller ring and the rear roller ring disposed on the front support roller and the rear support roller.

[0021] This invention provides a method for modifying the internal structure of a cylinder, the internal structure of which includes a fixed rake. The method includes the following steps: providing a U-bolt and two nuts capable of threaded connection to the ends of two branches of the U-bolt; forming two through holes on a guide plate, the distance between the two through holes corresponding to the distance between the two branches of the U-bolt; placing the first surface of the guide plate against the rake, with the two through holes on the guide plate located on opposite sides of the rake; surrounding the rake with the U-bolt, and having the two branches pass through the two through holes on the guide plate, and threading the two nuts to the ends of the two branches of the U-bolt, the nuts abutting against the second surface of the guide plate, thereby mounting the guide plate on the rake.

[0022] Preferably, when it is necessary to disassemble the guide plate, the nut is unscrewed from the U-bolt, and the U-bolt is removed to disassemble the guide plate.

[0023] Preferably, the nut is a cap nut.

[0024] This invention connects the rake nail and the guide plate using U-bolts and cap nuts, enabling rapid disassembly and switching of the internal structure of the cylinder. It features a simple structure, easy installation, reduced modification costs, and improved production efficiency. Attached Figure Description

[0025] The accompanying drawings illustrate a preferred embodiment of the present invention, wherein:

[0026] Figure 1 This illustrates a drum device used in the tobacco processing process in the prior art;

[0027] Figure 2 This illustrates the internal structure of the cylinder in a prior art blade heating drum device;

[0028] Figure 3The material guiding structure of the present invention is shown;

[0029] Figure 4 The material guiding structure of the present invention is shown along... Figure 3 A sectional view of section JJ in the image;

[0030] Figure 5 The internal structure of the drum body of the drum device according to the present invention is shown;

[0031] Figure 6 Show Figure 5 The internal structure of the cylinder features a guide plate with a gradually changing height in the feeding acceleration section;

[0032] Figure 7 Show Figure 5 The height of the rake nails in the stepped height variation of the discharge acceleration section inside the cylinder structure;

[0033] Figure 8 and Figure 9 Show Figure 5 Two types of guide plates with different heights in the heating and rehydration section of the internal structure of the cylinder;

[0034] Figure 10 Show Figure 5 The material guide plate in the dispersing and mixing section of the internal structure of the cylinder;

[0035] Figure 11 Show Figure 5 A front view of the guide plate of the flow-blocking section inside the cylinder; and

[0036] Figure 12 Show Figure 11 Side view of the guide plate of the flow-blocking section. Detailed Implementation

[0037] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0038] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0039] In the description of this disclosure, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to 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 on the scope of protection of the present invention.

[0040] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0041] See Figure 1 The diagram shows a roller device 11 used in tobacco processing. The roller device 11 mainly includes: a discharge hood 1, a cylinder 2, a rear roller ring 3, a rear support roller 4, support legs 5, a front support roller 6, a feed inlet 7, nozzles 8, a front roller ring 9, and a dust removal and dehumidification device 10. The cylinder 2 is made of rolled stainless steel plate and is driven by the front roller ring 3 and the rear roller ring 9, which are placed on the front support roller 4 and the rear support roller 6, respectively. Tobacco and other materials enter the cylinder 2 through the feed inlet 7 via a conveyor belt. Nozzles 8 are installed at the front end of the roller device, using compressed air to inject steam, flavorings, and other media to achieve processes such as loosening, rehydration, feeding, and flavor enhancement. Due to the inclination angle of the cylinder, the material, under its own gravity, spirals towards the discharge inlet as the cylinder rotates. The internal structure of the cylinder fully agitates, mixes, homogenizes, and loosens the material, which is then discharged from the cylinder through the discharge hood 1. Waste gas, smoke, and other impurities generated during production are discharged from the roller device through the dust removal and dehumidification device 10.

[0042] As mentioned above, the internal structure of the drum equipment used in the tobacco processing technology is typically formed using rakes and / or guide plates. The rakes have a strong dispersing ability, capable of lifting and breaking up the tobacco leaves to a sufficient height to meet process requirements; therefore, rakes are commonly used extensively inside the drum. Figure 2 As shown, taking the leaf heating drum device 11' as an example, its interior can be divided into: rapid feeding section a, heating and rehydration section b, and rapid discharge section c. The rapid feeding section a uses a structure formed by circumferentially evenly distributed fully welded guide plates 12 to achieve rapid material feeding. The heating and rehydration section b uses a structure entirely formed by rakes 13, with four rows of rakes per group, evenly distributed circumferentially, and staggered between groups, for a total of five groups of rakes, used to achieve heating and rehydration of the tobacco leaves. The rapid discharge section c also uses a structure entirely formed by rakes, with three rows of rakes arranged from high to low to achieve rapid material discharge.

[0043] During the processing of shredded tobacco, due to its small surface area, the rakes cannot lift the tobacco to a sufficient height, requiring a guide plate to carry it. Furthermore, the tobacco is often fragmented, and the rake structure easily breaks it. Therefore, guide plates are typically used in tobacco processing. Traditional drum mills process both sheet tobacco and shredded tobacco in a uniform manner, meaning all functional sections use rakes to form the internal structure of the drum. This fails to achieve the necessary material dispersion, contact, and mixing. Moreover, replacing functional sections entirely composed of rakes with those incorporating guide plates typically involves cutting and then welding, which consumes significant time and labor costs and is detrimental to structural modifications.

[0044] Therefore, a removable or replaceable internal structure for tobacco cylinders is needed to adapt to different production needs, thereby reducing modification costs and improving the efficiency of tobacco production. This invention provides an easy-to-install and replaceable material guide structure. The material guide structure uses a threaded connection to a guide plate fixed to a rake nail inside the cylinder, facilitating modification and disassembly of the internal structure of the cylinder, and providing support for optimizing the internal structure of the cylinder and achieving refined control in tobacco production.

[0045] Figure 3 and Figure 4 The material guiding structure 14 of the present invention is shown, wherein Figure 4 It is along Figure 3 The sectional view of section JJ in the image.

[0046] like Figure 3 , Figure 4 As shown, the material guiding structure 14 of the present invention includes: a U-bolt 15, comprising a U-shaped portion 20 and two branches 21, the ends of which are threaded; two cap nuts 16 capable of threadedly engaging with the two branches 21 of the U-bolt 15; a material guiding plate 12, comprising two through holes 17, the distance between which corresponds to the distance between the two branches 21 of the U-bolt 15, such that the two branches 21 of the U-bolt 15 can simultaneously pass through the two through holes 17 of the material guiding plate 12; and a fixed rake nail 13, wherein the U-bolt... The U-shaped portion 20 of the U-bolt 15 can surround the rake nail 13, such that the U-bolt 15 surrounds the rake nail 13 at a certain height, the rake nail 13 is accommodated in the U-shaped portion 20 of the U-bolt 15, and the rake nail 13 abuts against the first surface 18 of the guide plate 12. The ends of the two branches 21 of the U-bolt 15 pass through the through hole 17 of the guide plate 12 and are threadedly engaged with the two cap nuts 16, and the two cap nuts 16 abut against the second surface 20 of the guide plate 12 opposite to the first surface.

[0047] Therefore, according to the present invention, the guide structure 14 uses U-bolts 15 and cap nuts 16 to fix the guide plate 12 to the rake nail 13. The rake nail 13 is fixed inside the cylinder 2 of the roller device 11, for example, by full welding. Figure 3 The guide plate 12 shown in the example has a certain angle α, for example 140°, and the guide plate 12 may include any other angle, or be a flat plate.

[0048] Therefore, the material guiding structure 14 according to the present invention improves the efficiency of disassembly and adjustment of the internal structure of the cylinder while ensuring the reliable installation strength of the material guiding plate 12 and avoiding the adhesion of tobacco leaves or shreds during operation. Operators can freely choose to use either a material guiding plate or rake nails to form the internal structure of the cylinder according to actual needs or operational results. If the material guiding plate is less effective than the rake nails, it can be directly removed. Furthermore, if the height of the material guiding plate needs to be adjusted according to production requirements, only the height position of the U-bolt 15 and the cap nut 16 relative to the rake nail 13 needs to be adjusted.

[0049] As those skilled in the art will know, any other nut may be used instead of the cap nut 16, as long as the nut can be threaded into the ends of the two branches of the U-bolt 15 and abut against the guide plate.

[0050] The material guiding structure of this invention allows for rapid modification of the internal structure of existing roller equipment. Specifically, based on the function of different sections, various internal structures can be formed using the guide plate 12 or rake nails 13, and the height of the guide plate can be freely adjusted according to the operational results, thereby improving the quality of tobacco processing. By designing the internal structure of the cylinder 2 individually according to functional requirements, the filling rate of material within the cylinder 2 can be effectively increased, solving the problem of material only accumulating in a small area within the cylinder 2. This allows for more uniform mixing of materials, increases the contact surface during processing, and improves the quality of tobacco materials after processing.

[0051] For example, see Figure 5 The diagram shows the internal structure of the modified cylinder, in which the internal functional sections are subdivided along the axial direction and named as follows: Feeding acceleration section A, Heating and rehydration section B, Dispersion and mixing section C, Flow obstruction section D, and Discharge acceleration section E.

[0052] In the feeding acceleration section A, the material is rapidly accelerated into the heating and rehydration section B by the internal structure of the cylinder; in the heating and rehydration section B, the material is fully rehydrated; in the dispersing and mixing section C, the internal structure of the cylinder ensures more thorough mixing of the material, resulting in a more uniform distribution within the cylinder 2; in the flow obstruction section D, the internal structure of the cylinder reduces the material's velocity within the cylinder 2, extending its residence time for better processing results; in the discharge acceleration section E, the material is rapidly discharged from the cylinder 2 under the action of the internal structure, preventing materials that have met the processing requirements from exceeding their limits. The material can be tobacco materials such as shredded tobacco, tobacco sheets, or tobacco leaves.

[0053] Figure 6 The feed acceleration section A is shown to be a structure formed by equally spaced, gradually changing guide plates. Figure 7 The discharge acceleration section E is shown to be a structure formed entirely of rakes, wherein the guide plate and the rakes can be fully welded to the inner surface of the cylinder, or otherwise fixed to the inner surface of the cylinder. For example, the feed acceleration section A also includes rakes fixed to the inner surface of the cylinder, and the guide plate can be detachably connected to the fixed rakes of the feed acceleration section A using the U-bolts in the guide structure 14 described above. Figure 6 The guide plate 12, which has a gradually changing height, is shown. Figure 7 The rake nail 13 shows a step-like change in height.

[0054] Figure 8 and Figure 9 The diagram shows the guide plate 12 of the heating and rehydration section B. The original internal structure of the cylinder formed by rake nails 13 is modified using the guide structure 14 of this invention to form the internal structure of the cylinder using the guide plate 12 for better material guidance. The rake nails 13 are fixed to the cylinder (e.g., by welding), and the guide plate 12 and the rake nails 13 are connected by U-bolts 15 and cap nuts 16 in the guide structure 14 of this invention. In the heating and rehydration section B, the guide plate 12 is a gradient plate from low to high, installed in a high-low-low-high configuration, allowing the material to form a "bowl-shaped" smoke screen in this section, better absorbing the medium and preventing adhesion to the cylinder wall. Figure 8 , 9 Two types of guide plates 12 with different heights are shown, which are distributed axially in the heating and rehydration section B in a high-low-low-high pattern.

[0055] Figure 10 The guide plate 12 of the mixing section C is shown. It can be modified by the guide structure 14 of the present invention to form an internal structure with guide plates 12 of equal height, wherein rake nails 13 are welded to the inner surface of the cylinder, for example. The guide plates 12 of equal height and rake nails 13 are connected by U-bolts 15 and cap nuts 16 of the guide structure 14 of the present invention, so that the material is further mixed evenly in this area.

[0056] Figure 11 and Figure 12 The guide plate 12 of the flow-blocking section D is shown, wherein Figure 11 Showing the front view of the guide plate, Figure 12 A side view of the guide plate is shown. From a process perspective, the flow obstruction section D can be modified by using the guide structure 14 of the present invention to guide the material using an angled guide plate 12 of equal height. The rake nail 13 is welded to the inner surface of the cylinder, for example. The angled guide plate 12 and the rake nail 13 are connected by U-bolts 15 and cap nuts 16 of the guide structure 14.

[0057] The present invention also provides a method for modifying the existing internal structure of a cylinder including a rake 13: providing a U-bolt 15 and two cap nuts 16 capable of being threadedly connected to the two branch ends of the U-bolt 15; forming two through holes 17 on a guide plate 12, the spacing between the two through holes 17 corresponding to the distance between the two branches of the U-bolt 15; abutting the first surface 18 of the guide plate 12 against the rake 13, with the two through holes 17 on the guide plate 12 located on both sides of the rake 13; surrounding the rake with the U-bolt 15, and having the two branches pass through the two through holes 17 on the guide plate 12, and threading the two cap nuts 16 to the two branch ends of the U-bolt 15, with the cap nuts 16 abutting the second surface 19 of the guide plate 12, thereby mounting the guide plate 12 on the rake 13.

[0058] When it is necessary to disassemble the guide plate 12 or adjust the height of the guide plate according to the operating effect of the roller device, the cover nut 16 is unscrewed from the U-bolt 15 and the U-bolt 15 is removed to disassemble the guide plate 12.

[0059] This invention connects the rake nail and the guide plate using U-bolts and cap nuts, enabling rapid disassembly and switching of the internal structure of the cylinder, reducing modification costs and improving production efficiency.

[0060] From the description provided based on the preferred embodiments, it will be apparent to those skilled in the art that modifications can be made without departing from the scope of the invention as defined by the following claims.

Claims

1. A material guiding structure for the interior of a drum device, characterized in that, The material guiding structure includes: At least one U-bolt, each U-bolt comprising a U-shaped portion and two branches, the ends of the two branches being threaded; Two nuts capable of engaging with the two branch threads of each U-bolt; A guide plate includes at least a pair of through holes, the distance between the pair of through holes corresponding to the distance between the two branches of the U-bolt, such that the two branches of the U-bolt can pass through the pair of through holes of the guide plate simultaneously, the guide plate including a first surface and a second surface opposite to the first surface; Multiple rakes are fixed inside the cylinder and can be accommodated within the U-shaped portion of the U-bolt. The U-bolt surrounds the rake at a selected height, and the rake abuts against the first surface of the guide plate. The ends of the two branches of the U-bolt pass through the through hole of the guide plate and are threadedly engaged with the two nuts, and the two nuts abut against the second surface of the guide plate, thereby fixing the guide plate to the rake in a detachable manner and realizing the modification of the internal structure of the cylinder.

2. The material guiding structure according to claim 1, characterized in that, The nut is a cap nut.

3. The material guiding structure according to claim 1, characterized in that, The rake nails are fixed inside the drum of the drum equipment by full welding.

4. The material guiding structure according to claim 1, characterized in that, The rake nails are fixed inside the drum of the roller equipment by means of threaded connection.

5. The material guiding structure according to claim 1, characterized in that, The guide plate has a certain angle.

6. A cylindrical body, comprising an internal structure, wherein the internal structure includes at least one functional segment along the axial direction, characterized in that, The functional segment includes a material guiding structure according to any one of claims 1-5, wherein the rake nail of the material guiding structure is fixed on the inner surface of the cylinder.

7. The cylindrical body according to claim 6, characterized in that, The at least one functional section includes a feeding acceleration section, a discharging acceleration section, and a heating and rehydration section, a dispersing and mixing section, and a flow-blocking section located between the feeding acceleration section and the discharging acceleration section.

8. The cylindrical body according to claim 7, characterized in that, The feeding acceleration section includes guide plates with equidistant, gradually varying heights, and the discharging acceleration section includes rakes.

9. The cylindrical body according to claim 7 or 8, characterized in that, The warming and rehydration section includes a guide plate that gradually increases in temperature from low to high.

10. The cylindrical body according to claim 7 or 8, characterized in that, The dispersing and mixing section includes guide plates of equal height.

11. The cylindrical body according to claim 7 or 8, characterized in that, The flow-blocking section includes guide plates of equal height and at an angle.

12. A drum device, characterized in that, The roller device includes a cylinder body according to any one of claims 6-11, the cylinder body being able to rotate under the drive of a driving device, thereby processing the material contained in the cylinder body, the cylinder body having a certain inclination angle.

13. The drum device according to claim 12, characterized in that, The drum device also includes: A discharge hood is used to discharge materials. The material enters the interior of the cylinder through the feed inlet. Nozzle, used to inject media into the cylinder; Dust removal and dehumidification device, used to discharge exhaust gas and smoke.

14. The drum device according to claim 13, characterized in that, The roller device further includes: a front roller ring and a rear roller ring, a front support roller and a rear support roller, and support legs, wherein the roller body is driven by the front roller ring and the rear roller ring placed on the front support roller and the rear support roller.

15. A method for modifying the internal structure of a cylinder, wherein the internal structure of the cylinder includes fixed rake nails, and the method for modifying the internal structure of the cylinder includes the following steps: Provide at least one U-bolt and two nuts capable of threaded connection to the ends of two branches of each U-bolt; At least one pair of through holes are formed on the guide plate, the spacing between the pair of through holes corresponding to the distance between the two branches of the U-bolt; The first surface of the guide plate is brought against the rake nail, and two of the two through holes in the pair of through holes on the guide plate are located on both sides of the rake nail. The U-bolt surrounds the rake nail, and two branches pass through the pair of through holes on the guide plate and two nuts are threaded to the ends of the two branches of the U-bolt. The nuts abut against the second surface of the guide plate, thereby detachably mounting the guide plate on the rake nail and modifying the internal structure of the cylinder.

16. The method according to claim 15, characterized in that, When it is necessary to disassemble the guide plate, unscrew the nut from the U-bolt, remove the U-bolt, and disassemble the guide plate.

17. The method according to claim 15 or 16, characterized in that, The nut is a cap nut.

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