Reconstituted tobacco electromagnetic heating device and heating method

Abstract

The invention discloses a reconstituted tobacco electromagnetic heating device and method, and relates to the technical field of tobacco processing equipment.The reconstituted tobacco electromagnetic heating device comprises a first mounting frame, the top of the first mounting frame is provided with a transmission roller set, and the transmission roller set is provided with a conveying belt; an electromagnetic heater is arranged at the top of the second mounting frame; and the driving device is arranged at the top of the second mounting frame and connected with the electromagnetic heater through a piston rod. According to the reconstituted tobacco electromagnetic heating device and method, the technical problem that the baking effect is affected due to deformation of the surface of the conveying belt caused by thermal deformation of the conveying belt, loosening of the tensioning roller and the like is solved, the electromagnetic heater is driven by the driving device to move up and down, and the height of the electromagnetic heater is automatically adjusted; the real-time distance between the electromagnetic heater and the surface of the conveying belt is always kept consistent with the preset distance, and the reconstituted tobacco is always located at the optimal electromagnetic heating position, so that the tobacco is stably and uniformly heated, and the quality of finished tobacco sheets is improved.

Description

Technical Field

[0001] The 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 sheet or filamentary regeneration product made from discarded tobacco stems, tobacco dust and broken tobacco flakes during the cigarette processing process, which is used as cigarette filler. Reconstituted tobacco plays an important role in cigarette production, not only reducing cigarette costs, but also improving the intrinsic quality of cigarettes. The baking process is an important process in the production of reconstituted tobacco. The baking process refers to the process of drying the residual moisture in the tobacco leaves through the baking device. The quality of baking is directly related to the quality of the finished tobacco leaves.

[0003] At present, many places use electromagnetic heating to heat and bake reconstituted tobacco leaves. However, in actual applications, since the conveyor belt is made of steel, thermal deformation, loosening of the tension roller, etc. often cause the surface of the conveyor belt to deform, thereby changing the distance between the electromagnetic heater and the conveyor belt surface, so that the tobacco leaves on the conveyor belt cannot be in the best position for electromagnetic heating, thereby affecting the baking effect. Therefore, a reconstituted tobacco leaf electromagnetic heating device and heating method are proposed to solve 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 object, the present invention provides a reconstituted tobacco electromagnetic heating device, comprising:

[0006] A first mounting frame, wherein 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, and the conveyor belt is used to convey reconstituted tobacco leaves;

[0007] A second mounting frame is arranged directly above the first mounting frame, and an electromagnetic heater for baking the reconstituted tobacco leaves is arranged 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, several of which 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 set comprises: a rotating roller, 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 for tensioning 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 of the mounting plate, a vertical guide rail is provided on the side 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 also provides a method for heating reconstituted tobacco leaves, comprising:

[0018] S1: obtaining a preset distance between the electromagnetic heater and the surface of the conveyor belt, and controlling a plurality of 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 surface of the conveyor belt, and determine whether the real-time distance is within the preset distance range. If not, control the drive device to drive the electromagnetic heater to move up and down through the piston rod, so that the real-time distance between the electromagnetic heater and the surface of the conveyor belt is always consistent with the preset distance.

[0020] Preferably, the step of obtaining a preset distance range between the electromagnetic heater and the surface of the conveyor belt comprises: the preset distance between the electromagnetic heater and the surface of the conveyor belt 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 surface of the conveyor belt is detected in real time by a laser rangefinder. When the distance between the electromagnetic heater and the surface of the conveyor belt is inconsistent with the preset distance, the controller controls the driving device to drive the electromagnetic heater up and down through the piston rod, so as to achieve the purpose of automatically adjusting the height of the electromagnetic heater, so that the real-time distance between the electromagnetic heater and the surface of the conveyor belt is always consistent with the preset distance, and the distance from the electromagnetic heater to the surface of the conveyor belt 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 best position for electromagnetic heating, thereby forming a relatively stable and uniform heating of the tobacco leaves, and 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with 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 respectively. 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 laid on the conveyor belt 3. One of the rotating rollers is driven to rotate by the driving motor, and the rotating roller drives the conveyor belt 3 to operate, and the reconstituted tobacco leaves are transported by 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, and 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, 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 arranged on the side of the electromagnetic heater 6, and several laser rangefinders 7 are respectively arranged on both sides of the electromagnetic heater 6. On the one hand, the distance from the electromagnetic heater 6 to the surface of the conveyor belt 3 is detected by the laser rangefinder 7. 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, and the controller 10 is connected to the laser rangefinder 7, the driving device 8 and the electromagnetic heater 6. A control mainboard is installed in the controller 10, and the distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 is preset by inputting a program into the control mainboard, so that the best baking temperature can be obtained during the transportation of the reconstituted tobacco leaves on the conveyor belt 3, thereby ensuring the quality of the finished tobacco leaves.

[0034] When in use, the controller 10 pre-sets a 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, 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, and 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 surface of the conveyor belt 3, so that the reconstituted tobacco leaves on the conveyor belt 3 are always in the best 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 running speed of the conveyor belt 3. The running 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 provided with a plurality of tensioning rollers 4, specifically, two tensioning rollers 4 are provided, and the plurality of tensioning rollers 4 are used to tension the conveyor belt 3. Specifically, a plurality of elastic telescopic rods 12 (not shown in the figure) are symmetrically arranged on the bottom surface of the first mounting frame 1, and the bottom ends of the plurality of elastic telescopic rods 12 are connected to the fixing seats 11, and each two fixing seats 11 are rotatably connected to the two ends of the tensioning roller 4. When the conveyor belt 3 is deformed and the overall length increases, the force of the conveyor belt 3 on the elastic telescopic rod 12 decreases, and the elastic telescopic rod 12 will extend to a certain length to ensure that the conveyor belt 3 is always stably fitted with the rotating roller, so as to improve the stability of the conveyor belt 3 during operation, and at the same time, to a certain extent, avoid the distance between the electromagnetic heater 6 and the surface of the conveyor belt 3 from changing. When the conveyor belt 3 is deformed and the overall length shrinks, the elastic telescopic rod 12 will shrink to a certain length under the force of the conveyor belt 3 to ensure that the conveyor belt 3 is stably fitted with the rotating roller, and further ensure 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 to avoid deflection and shaking left and right, thereby ensuring the stable movement of the electromagnetic heater 6.

[0039] Preferably, a positioning frame (not shown in the figure) is provided on the inner side of the second mounting frame 5, and the positioning frame is used to clamp the first mounting frame 1, and the position of the second mounting frame 5 relative to the first mounting frame 1 is limited by the positioning frame to ensure that the conveyor belt 3 is always directly below the electromagnetic heater 6. Of course, the supporting legs of the first mounting frame 1 and the supporting legs of the second mounting frame 5 can also be directly locked on the ground by bolts, which also achieves the purpose of limiting the position of the second mounting frame 5 relative to the first mounting frame 1.

[0040] The heating method of reconstituted tobacco leaves adopted by the present invention specifically comprises the following steps: after the reconstituted tobacco leaves are transported to the conveyor belt 3, the controller 10 controls a plurality of electromagnetic heaters 6 to bake the reconstituted tobacco leaves in sequence, the controller 10 sets a preset distance between the electromagnetic heater 6 and the surface of the conveyor belt 3, 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, when the surface of the conveyor belt 3 is deformed and the surface of the conveyor belt 3 bulges upward, the controller 10 sends a command 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 a command 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 making the reconstituted tobacco leaves on the conveyor belt 3 always in the best position for electromagnetic heating.

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

[0042] In the second embodiment of the present invention, the step of obtaining a 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 and the baking temperature required for the reconstructed tobacco leaves is gradually reduced, 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 is gradually reduced as the distance the reconstructed tobacco leaves are transported on the conveyor belt 3. When the reconstructed tobacco leaves are being baked and the baking temperature required for the reconstructed tobacco leaves is gradually increased, 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 is gradually increased as the distance 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 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 relatively 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 in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these 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, and a conveyor belt is provided on the transmission roller group, and the conveyor belt is used to convey reconstituted tobacco leaves; A second mounting frame is arranged directly above the first mounting frame, and an electromagnetic heater for baking the reconstituted tobacco leaves is arranged 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, several of which 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 is connected to the laser rangefinder, the driving device and the electromagnetic heater.

2. The electromagnetic heating device for reconstituted tobacco according to claim 1, characterized in that: The transmission roller group includes: a rotating roller, two rotating rollers are parallel to each other, and both of the rotating rollers are 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 arranged on the top of the second mounting frame, the driving device is arranged 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 leaves 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 surface of the conveyor belt, and controlling a plurality of 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 surface of the conveyor belt, and determine whether the real-time distance is within the preset distance range. If not, control the drive device to drive the electromagnetic heater to move up and down through the piston rod, so that the real-time distance between the electromagnetic heater and the surface of the conveyor belt 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 surface of the conveyor belt includes: the preset distance between the electromagnetic heater and the surface of the conveyor belt 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 conveyor belt surface includes: during the process of the conveyor belt conveying reconstituted tobacco leaves, the preset distance between the electromagnetic heater and the conveyor belt surface is positively correlated or negatively correlated with the distance the reconstituted tobacco leaves are conveyed on the conveyor belt.

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