Reconstituted tobacco leaf electromagnetic heating device and heating method

Abstract

The present invention discloses an electromagnetic heating device and heating method for reconstituted tobacco leaves, which relates to the technical field of tobacco leaf processing equipment, and comprises: a first mounting frame, a transmission roller group is provided on the top of the first mounting frame, and a conveyor belt is provided on the transmission roller group; a second mounting frame, an electromagnetic heater is provided on the top of the second mounting frame; a driving device is provided on the top of the second mounting frame, and the driving device is connected to the electromagnetic heater via a piston rod. The above-mentioned electromagnetic heating device and heating method for reconstituted tobacco leaves solve the technical problem that the conveyor belt is deformed by heat, the tensioning roller is loose, etc., which causes the surface of the conveyor belt to deform, thereby affecting the baking effect. The electromagnetic heater is driven up and down by the driving device, and the height of the electromagnetic heater is automatically adjusted so that the real-time distance between the electromagnetic heater and the conveyor belt surface is always consistent with the pre-set distance. The reconstituted tobacco leaves are always in the optimal position for electromagnetic heating, thereby forming a more stable and uniform heating of the tobacco leaves, thereby improving the quality of the finished tobacco leaves.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco leaf processing equipment, and in particular to a reconstituted tobacco leaf electromagnetic heating device and a heating method. Background Art

[0002] Reconstituted tobacco refers to a regenerated product, made into sheets or shreds from discarded tobacco stems, tobacco dust, and tobacco flakes during cigarette processing, used as a cigarette filler. Reconstituted tobacco plays a vital role in cigarette production, not only reducing costs but also improving the inherent quality of cigarettes. Curing is a crucial step in the production of reconstituted tobacco. Curing involves drying the remaining moisture from the tobacco leaves through a curing device. The quality of the curing directly impacts the quality of the finished tobacco leaves.

[0003] Currently, many places use electromagnetic heating to heat and bake reconstituted tobacco leaves. However, in actual applications, because the conveyor belt is made of steel, thermal deformation and loosening of the tension roller often cause deformation of the conveyor belt surface. This causes the distance between the electromagnetic heater and the conveyor belt surface to change, preventing the tobacco leaves on the conveyor belt from being in the optimal position for electromagnetic heating, thus affecting the baking effect. Therefore, an electromagnetic heating device and heating method for reconstituted tobacco leaves are proposed to address the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an electromagnetic heating device for reconstituted tobacco leaves, which solves the technical problem that the surface of the conveyor belt is often deformed due to heat deformation of the conveyor belt, looseness of the tensioning roller, etc., so that the tobacco leaves on the conveyor belt cannot be in the optimal position for electromagnetic heating, thereby affecting the baking effect.

[0005] To achieve the above-mentioned object, the present invention provides a reconstituted tobacco leaf electromagnetic heating device, comprising:

[0006] a first mounting frame, wherein a transmission roller group is provided on the top of the first mounting frame, a conveyor belt is provided on the transmission roller group, and the conveyor belt is used to transport reconstituted tobacco leaves;

[0007] a second mounting frame, disposed directly above the first mounting frame, wherein an electromagnetic heater for baking the reconstituted tobacco leaves is disposed on the top of the second mounting frame;

[0008] a driving device, disposed on the top of the second mounting frame, the driving device being connected to the electromagnetic heater via a piston rod;

[0009] Laser rangefinders, wherein a plurality of laser rangefinders are respectively arranged on the sides of the electromagnetic heater, and the laser rangefinders are used to detect the distance from the electromagnetic heater to the surface of the conveyor belt;

[0010] A controller is connected to the laser rangefinder, the driving device and the electromagnetic heater.

[0011] Preferably, the transmission roller group includes: two rotating rollers, wherein the two rotating rollers are parallel to each other, and both of the rotating rollers are rotatably connected to the first mounting frame.

[0012] Preferably, the first mounting frame is provided with a plurality of tensioning rollers, and the plurality of tensioning rollers are used to tension the conveyor belt.

[0013] Preferably, a plurality of elastic telescopic rods are symmetrically arranged on the bottom surface of the first mounting frame, the bottom ends of the plurality of elastic telescopic rods are connected to a fixing seat, and the fixing seat is rotatably connected to the tensioning roller.

[0014] Preferably, a fixing frame is provided on the top of the second mounting frame, the driving device is provided on the side of the fixing frame, and the fixing frame is slidably connected to the electromagnetic heater.

[0015] Preferably, a mounting plate is provided on the top surface of the electromagnetic heater, a guide rail groove is provided on the side surface of the mounting plate, a vertical guide rail is provided on the side surface of the fixing frame, and the vertical guide rail is slidably connected to the guide rail groove.

[0016] Preferably, a positioning frame is provided on the inner side of the second mounting frame, and the positioning frame is used to clamp the first mounting frame.

[0017] Accordingly, the technical solution of the present invention further provides a method for heating reconstituted tobacco leaves, comprising:

[0018] S1: obtaining a preset distance between the electromagnetic heater and the conveyor belt surface, and controlling multiple electromagnetic heaters to sequentially bake the reconstituted tobacco leaves after the reconstituted tobacco leaves are conveyed to the conveyor belt;

[0019] S2: Control the laser rangefinder to detect the real-time distance between the electromagnetic heater and the conveyor belt surface, and determine whether the real-time distance is within the preset distance range. If not, control the drive device to drive the electromagnetic heater up and down through the piston rod, so that the real-time distance between the electromagnetic heater and the conveyor belt surface is always consistent with the preset distance.

[0020] Preferably, the step of obtaining a preset distance range between the electromagnetic heater and the conveyor belt surface includes: the preset distance between the electromagnetic heater and the conveyor belt surface is a fixed value.

[0021] Preferably, the step of obtaining a preset distance range between the electromagnetic heater and the surface of the conveyor belt includes: during the process of the conveyor belt transporting reconstituted tobacco leaves, the preset distance between the electromagnetic heater and the surface of the conveyor belt is positively correlated or negatively correlated with the distance the reconstituted tobacco leaves are transported on the conveyor belt.

[0022] Compared with the above background technology, the electromagnetic heating device for reconstituted tobacco leaves provided by the present invention has the following beneficial effects: the distance between the electromagnetic heater and the conveyor belt surface is detected in real time by a laser rangefinder. When the distance between the electromagnetic heater and the conveyor belt surface is inconsistent with the preset distance, the controller controls the driving device to drive the electromagnetic heater up and down through the piston rod, thereby achieving the purpose of automatically adjusting the height of the electromagnetic heater, so that the real-time distance between the electromagnetic heater and the conveyor belt surface is always consistent with the preset distance, and the distance from the electromagnetic heater to the conveyor belt surface will not change due to deformation of the conveyor belt surface, so that the reconstituted tobacco leaves on the conveyor belt are always in the optimal position for electromagnetic heating, thereby forming a relatively stable and uniform heating of the tobacco leaves, effectively improving the quality of the finished tobacco leaves. The heating method of reconstituted tobacco leaves used in the present invention also has the above beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a three-dimensional structural diagram provided by an embodiment of the present invention.

[0025] Specifically, 1-first mounting frame; 2-drive roller group; 3-conveyor belt; 4-tensioning roller; 5-second mounting frame; 6-electromagnetic heater; 7-laser rangefinder; 8-driving device; 9-assembly plate; 10-controller; 11-fixed seat; 12-elastic telescopic rod; 13-vertical guide rail. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] like Figure 1As shown, in order to achieve the above-mentioned purpose, the present invention provides a reconstituted tobacco electromagnetic heating device, comprising: a first mounting frame 1 and a second mounting frame 5, wherein the second mounting frame 5 is arranged directly above the first mounting frame 1.

[0029] A transmission roller group 2 is provided on the top of the first mounting frame 1. The transmission group includes two rotating rollers arranged in parallel. The rotating rollers are rotatably connected to the first mounting frame 1. In addition, a driving motor (not shown in the figure) is provided on the first mounting frame 1. The output end of the driving motor is connected to one of the rotating rollers. A conveyor belt 3 is provided on the transmission roller group 2. Reconstituted tobacco leaves to be baked are spread on the conveyor belt 3. The driving motor drives one of the rotating rollers to rotate, and the rotating roller drives the conveyor belt 3 to operate, and the reconstituted tobacco leaves are transported through the conveyor belt 3.

[0030] An electromagnetic heater 6 is provided on the top of the second mounting frame 5 . Specifically, two electromagnetic heaters 6 are provided. Both electromagnetic heaters 6 are located directly above the conveyor belt 3 . The electromagnetic heaters 6 are used to bake the reconstituted tobacco leaves on the conveyor belt 3 .

[0031] A driving device 8 is also provided on the top of the second mounting frame 5. The driving device 8 is connected to the electromagnetic heater 6 through a piston rod. Specifically, the driving device 8 adopts a driving cylinder, which drives the piston rod to extend and retract through the driving cylinder, thereby driving the electromagnetic heater 6 to move up and down to adjust the distance between the electromagnetic heater 6 and the surface of the conveyor belt 3.

[0032] A laser rangefinder 7 is provided on the side of the electromagnetic heater 6, and several laser rangefinders 7 are respectively provided on both sides of the electromagnetic heater 6. On the one hand, the laser rangefinder 7 is used to detect the distance from the electromagnetic heater 6 to the surface of the conveyor belt 3. On the other hand, multiple laser rangefinders 7 can detect multiple surfaces of the conveyor belt 3, thereby improving the accuracy and reliability of the detection data of the laser rangefinder 7.

[0033] It should be noted that a controller 10 is provided on one side of the first mounting frame 1. The controller 10 is signal-connected to the laser rangefinder 7, the drive device 8, and the electromagnetic heater 6. A control mainboard is installed within the controller 10. By inputting a program into the control mainboard, the distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is pre-set. This allows the reconstituted tobacco leaves to obtain an optimal baking temperature during transportation on the conveyor belt 3, thereby ensuring the quality of the finished tobacco leaves.

[0034] During use, the controller 10 pre-sets the preset distance between the electromagnetic heater 6 and the surface of the conveyor belt 3. After the reconstituted tobacco leaves are conveyed to the conveyor belt 3, the multiple electromagnetic heaters 6 are controlled to bake the reconstituted tobacco leaves in turn. The controller 10 controls the laser rangefinder 7 to detect the distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 in real time. The laser rangefinder 7 transmits the detected real-time distance signal between the electromagnetic heater 6 and the surface of the conveyor belt 3 to the controller 10. After the conveyor belt 3 is deformed by heat, the controller 10 transmits a signal to the drive device 8. The drive device 8 drives the electromagnetic heater 6 up and down through the piston rod to achieve the purpose of automatically adjusting the height of the electromagnetic heater 6, so that the real-time distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is always consistent with the preset distance, and the distance from the electromagnetic heater 6 to the surface of the conveyor belt 3 will not change due to reasons such as deformation of the conveyor belt 3 surface, so that the reconstituted tobacco leaves on the conveyor belt 3 are always in the optimal position for electromagnetic heating, thereby forming a relatively stable and uniform heating of the tobacco leaves, effectively improving the quality of the finished tobacco leaves.

[0035] In addition, the controller 10 can also adjust the speed of the drive motor according to the instructions input by the staff, thereby controlling the operating speed of the conveyor belt 3. The operating speed of the conveyor belt 3 is further coordinated with the height of the electromagnetic heater 6 to further ensure that the reconstituted tobacco leaves obtain the optimal baking temperature.

[0036] The first mounting frame 1 is equipped with several tensioning rollers 4. Specifically, there are two tensioning rollers 4, which are used to tension the conveyor belt 3. Specifically, several elastic telescopic rods 12 (not shown) are symmetrically arranged on the bottom surface of the first mounting frame 1. The bottom ends of the elastic telescopic rods 12 are connected to fixed seats 11, and each two fixed seats 11 are rotatably connected to the ends of the tensioning rollers 4. When the conveyor belt 3 deforms and its overall length increases, the force exerted by the conveyor belt 3 on the elastic telescopic rods 12 decreases. The elastic telescopic rods 12 then extend a certain distance, ensuring that the conveyor belt 3 maintains a stable contact with the rotating rollers, thereby improving the stability of the conveyor belt 3 during operation and, to a certain extent, preventing changes in the distance between the electromagnetic heater 6 and the surface of the conveyor belt 3. When the conveyor belt 3 deforms and its overall length decreases, the elastic telescopic rods 12 contract a certain distance under the force of the conveyor belt 3, ensuring a stable contact between the conveyor belt 3 and the rotating rollers, further ensuring the stability of the conveyor belt 3 during operation.

[0037] In one embodiment of the present invention, a fixing frame is provided on the top of the second mounting frame 5, and a driving device 8 is provided on the side of the fixing frame. It should be noted that the two driving devices 8 are respectively provided at the two ends of the same electromagnetic heater 6, and the two driving devices 8 act synchronously. The length direction of the piston rod is consistent with the height direction of the electromagnetic heater 6, and the fixing frame is slidably connected to the electromagnetic heater 6. When the driving device 8 drives the piston rod to extend and retract, the height of the electromagnetic heater 6 can be freely adjusted.

[0038] Specifically, an assembly plate 9 is provided on the top surface of the electromagnetic heater 6, a guide rail groove is provided on the side of the assembly plate 9, and a vertical guide rail 13 is provided on the side of the fixed frame. The vertical guide rail 13 is slidably connected to the guide rail groove. Through the cooperation between the vertical guide rail 13 and the guide rail groove, the electromagnetic heater 6 can move stably on the side of the fixed frame, avoiding deflection and left and right shaking, thereby ensuring the stable movement of the electromagnetic heater 6.

[0039] Preferably, a positioning frame (not shown) is provided on the inner side of the second mounting frame 5. The positioning frame is used to clamp the first mounting frame 1 and define the position of the second mounting frame 5 relative to the first mounting frame 1 by the positioning frame, thereby ensuring that the conveyor belt 3 is always directly below the electromagnetic heater 6. Of course, the support legs of the first mounting frame 1 and the support legs of the second mounting frame 5 can also be directly locked to the ground with bolts to achieve the same purpose of defining the position of the second mounting frame 5 relative to the first mounting frame 1.

[0040] The heating method of reconstituted tobacco adopted by the present invention specifically includes the following steps: after the reconstituted tobacco leaves are transported to the conveyor belt 3, the controller 10 controls multiple electromagnetic heaters 6 to bake the reconstituted tobacco leaves in sequence, and the preset distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is set by the controller 10. The laser rangefinder 7 transmits the real-time distance signal between the electromagnetic heater 6 and the surface of the conveyor belt 3 detected to the controller 10. After the conveyor belt 3 is deformed by heat, the controller 10 transmits a signal to the drive device 8. When the surface of the conveyor belt 3 is deformed and the surface of the conveyor belt 3 bulges upward, the controller 10 sends an instruction to the drive device 8 to retract the piston rod, and the piston rod drives the electromagnetic heater 6 to move upward. When the surface of the conveyor belt 3 is deformed and the surface of the conveyor belt 3 is concave downward, the controller 10 sends an instruction to the drive device 8 to extend the piston rod, and the piston rod drives the electromagnetic heater 6 to move downward, so that the real-time distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is always consistent with the preset distance, thereby ensuring that the reconstituted tobacco leaves on the conveyor belt 3 are always in the optimal position for electromagnetic heating.

[0041] In one embodiment of the present invention, the pre-set distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is a fixed value. When the reconstituted tobacco leaves are in the baking process and the reconstituted tobacco leaves need to obtain a more uniform heating temperature, during the process of the conveyor belt 3 transporting the reconstituted tobacco leaves, the real-time distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is always kept consistent, thereby forming a more stable and uniform heating of the reconstituted tobacco leaves, thereby improving the quality of the finished tobacco leaves.

[0042] In the second embodiment of the present invention, the step of obtaining the preset distance range between the electromagnetic heater 6 and the surface of the conveyor belt 3 includes: the preset distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is positively correlated or negatively correlated with the distance the reconstructed tobacco leaves are transported on the conveyor belt 3. Since the real-time distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is always consistent with the preset distance, when the reconstructed tobacco leaves are being baked, the baking temperature required for the reconstructed tobacco leaves gradually decreases. During the process of conveying the reconstructed tobacco leaves on the conveyor belt 3, the real-time distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 gradually decreases as the reconstructed tobacco leaves are transported on the conveyor belt 3. When the baking temperature required for the reconstructed tobacco leaves gradually increases during the process of baking the reconstructed tobacco leaves, the real-time distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 gradually increases as the reconstructed tobacco leaves are transported on the conveyor belt 3. The heating of the reconstructed tobacco leaves in different processing steps can form a certain temperature gradient, thereby improving the quality of the finished tobacco leaves.

[0043] In summary, the electromagnetic heater 6 is driven up and down by the driving device 8 to achieve the purpose of automatically adjusting the height of the electromagnetic heater 6, so that the real-time distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is always consistent with the pre-set distance, and the distance from the electromagnetic heater 6 to the surface of the conveyor belt 3 will not change due to reasons such as deformation of the surface of the conveyor belt 3. The reconstituted tobacco leaves are always in the best position for electromagnetic heating, thereby forming a more stable and uniform heating of the tobacco leaves, thereby improving the quality of the finished tobacco leaves.

[0044] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0045] The principles and implementation methods of the present invention are described herein using specific examples. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A reconstituted tobacco leaf electromagnetic heating device, characterized in that: include: a first mounting frame, wherein a transmission roller group is provided on the top of the first mounting frame, a conveyor belt is provided on the transmission roller group, and the conveyor belt is used to transport reconstituted tobacco leaves; a second mounting frame, disposed directly above the first mounting frame, wherein an electromagnetic heater for baking the reconstituted tobacco leaves is disposed on the top of the second mounting frame; a driving device, disposed on the top of the second mounting frame, the driving device being connected to the electromagnetic heater via a piston rod; Laser rangefinders, wherein a plurality of laser rangefinders are respectively arranged on the sides of the electromagnetic heater, and the laser rangefinders are used to detect the distance from the electromagnetic heater to the surface of the conveyor belt; a controller, connected to the laser rangefinder, the driving device and the electromagnetic heater; The heating method of the reconstituted tobacco electromagnetic heating device includes: S1: obtaining a preset distance between the electromagnetic heater and the conveyor belt surface, and controlling multiple electromagnetic heaters to sequentially bake the reconstituted tobacco leaves after the reconstituted tobacco leaves are conveyed to the conveyor belt; S2: Control the laser rangefinder to detect the real-time distance between the electromagnetic heater and the conveyor belt surface, and determine whether the real-time distance is within the preset distance range. If not, control the drive device to drive the electromagnetic heater up and down through the piston rod, so that the real-time distance between the electromagnetic heater and the conveyor belt surface is always consistent with the preset distance.

2. The electromagnetic heating device for reconstituted tobacco according to claim 1, characterized in that: The transmission roller group includes: two rotating rollers, the two rotating rollers are parallel to each other, and the two rotating rollers are both rotatably connected to the first mounting frame.

3. The electromagnetic heating device for reconstituted tobacco according to claim 2, characterized in that: The first mounting frame is provided with a plurality of tensioning rollers, and the plurality of tensioning rollers are used for tensioning the conveyor belt.

4. The electromagnetic heating device for reconstituted tobacco according to claim 3, characterized in that: A plurality of elastic telescopic rods are symmetrically arranged on the bottom surface of the first mounting frame, the bottom ends of the plurality of elastic telescopic rods are connected to a fixing seat, and the fixing seat is rotatably connected to the tensioning roller.

5. The electromagnetic heating device for reconstituted tobacco according to claim 1, characterized in that: A fixing frame is provided on the top of the second mounting frame, the driving device is provided on the side of the fixing frame, and the fixing frame is slidably connected to the electromagnetic heater.

6. The electromagnetic heating device for reconstituted tobacco according to claim 5, characterized in that: The top surface of the electromagnetic heater is provided with an assembly plate, the side surface of the assembly plate is provided with a guide rail groove, the side surface of the fixing frame is provided with a vertical guide rail, and the vertical guide rail is slidably connected to the guide rail groove.

7. The electromagnetic heating device for reconstituted tobacco according to claim 1, characterized in that: A positioning frame is provided on the inner side of the second mounting frame, and the positioning frame is used to clamp the first mounting frame.

8. A method for heating reconstituted tobacco leaves, applied to the reconstituted tobacco leaf electromagnetic heating device according to any one of claims 1 to 7, characterized in that: The heating method comprises: S1: obtaining a preset distance between the electromagnetic heater and the conveyor belt surface, and controlling multiple electromagnetic heaters to sequentially bake the reconstituted tobacco leaves after the reconstituted tobacco leaves are conveyed to the conveyor belt; S2: Control the laser rangefinder to detect the real-time distance between the electromagnetic heater and the conveyor belt surface, and determine whether the real-time distance is within the preset distance range. If not, control the drive device to drive the electromagnetic heater up and down through the piston rod, so that the real-time distance between the electromagnetic heater and the conveyor belt surface is always consistent with the preset distance.

9. The method for heating reconstituted tobacco according to claim 8, characterized in that: The step of obtaining a preset distance range between the electromagnetic heater and the conveyor belt surface includes: the preset distance between the electromagnetic heater and the conveyor belt surface is a fixed value.

10. The method for heating reconstituted tobacco according to claim 8, characterized in that: The step of obtaining a preset distance range between the electromagnetic heater and the surface of the conveyor belt includes: during the process of the conveyor belt transporting the reconstituted tobacco leaves, the preset distance between the electromagnetic heater and the surface of the conveyor belt is positively correlated or negatively correlated with the distance the reconstituted tobacco leaves are transported on the conveyor belt.

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