Stirring device for tobacco

Abstract

The utility model discloses a tobacco stirring device which comprises a stirring shell, a first stirring unit and a second stirring unit, the first stirring unit is close to the bottom of the stirring shell, and the first stirring unit is arranged in the parallel direction of the bottom of the stirring shell; the second stirring unit penetrates through the vertical side face of the stirring shell and is arranged above the first stirring unit, when tobacco enters the stirring shell, the first stirring unit stirs the tobacco in the horizontal direction, and the second stirring unit stirs the tobacco in the vertical direction. According to the stirring device, the tobacco mixture added into the stirring device is stirred in multiple directions in the horizontal direction and the vertical direction, and the flocculation mixture is dispersed, so that the stirring effect of the powder-liquid mixture better meets the process requirement. In addition, due to the fact that the weight of the tobacco is low, when the tobacco is stirred in the horizontal direction, the tobacco is prone to being rebounded to the vertical side face of the stirring shell, then the tobacco can be sheared again by the second stirring unit, and the uniformity of the tobacco is improved.

Description

TECHNICAL FIELD

[0001] The patent belongs to the technical field of tobacco processing, and particularly relates to a tobacco stirring device. BACKGROUND

[0002] Reconstituted tobacco refers to a regenerated product in the form of sheet or filament made of discarded tobacco stems, tobacco dust and tobacco fragments in the process of cigarette processing, and used as cigarette filler. The reconstituted tobacco plays an important role in cigarette production, which can not only reduce the cost of cigarettes, but also improve the internal quality of cigarettes.

[0003] Material stirring of reconstituted tobacco is a relatively important link in the process of reconstituted tobacco, and the uniformity of material stirring is directly related to the quality of the finished product. However, in the stirring process, the tobacco is light in weight, and due to different formulations and different proportions of powder and liquid, the uniformity of the slurry formed by stirring is different, and the uniformity of the finished product quality cannot be effectively guaranteed. CONTENT OF THE UTILITY MODEL

[0004] The patent aims to provide a tobacco stirring device to improve the uniformity of tobacco material mixing.

[0005] To solve the above technical problems, the patent adopts the following technical solutions:

[0006] A tobacco stirring device, the stirring device comprises a stirring shell, a first stirring unit and a second stirring unit, the first stirring unit is close to the bottom of the stirring shell, and the first stirring unit is arranged in the parallel direction of the bottom of the stirring shell, the second stirring unit is arranged above the first stirring unit through the vertical side of the stirring shell,

[0007] When the tobacco enters the stirring shell, the first stirring unit stirs the tobacco in the horizontal direction, and the second stirring unit stirs the tobacco in the vertical direction.

[0008] Further, the second stirring unit comprises a first side stirring blade and a second side stirring blade, and the stirring directions of the first side stirring blade and the second side stirring blade are opposite.

[0009] Further, the second stirring unit further comprises a first side shaft, a second side shaft, a first side gear and a second side gear,

[0010] Further, the first side gear and the second side gear are arranged outside the stirring shell,

[0011] Further, one end of the first side shaft penetrates through the stirring shell to connect the first side stirring blade, and the other end of the first side shaft connects the first side gear;

[0012] Further, one end of the second side shaft is connected with the second side stirring blade through the stirring shell, and the other end of the second side shaft is connected with the second side gear.

[0013] Further, the first side gear and the second side gear are connected in meshing.

[0014] Further, the second stirring unit further comprises a second motor, and the second motor is connected with the first side gear and / or the second side gear.

[0015] Further, the embedded platform is provided on the vertical side of the stirring shell,

[0016] Further, the embedded platform is provided with the first side shaft hole and the second side shaft hole,

[0017] Further, the first side shaft is connected with the first side stirring blade through the first side shaft hole;

[0018] Further, the second side shaft is connected with the second side stirring blade through the second side shaft hole.

[0019] Further, the first stirring unit comprises a plurality of layers of stirring blades.

[0020] Further, the first stirring unit further comprises a first motor and a main shaft, the first motor is arranged outside the stirring shell, one end of the main shaft penetrates through the bottom of the stirring shell to connect the plurality of layers of stirring blades, and the other end of the main shaft is connected with the first motor.

[0021] Further, the side edges of the plurality of layers of stirring blades are provided with sawtooth shapes, and the sawtooth shapes are arranged in two side edge directions of the same blade with the main shaft as the division point.

[0022] Further, the plurality of layers of stirring blades are at least three layers, and the adjacent blades of the plurality of layers of stirring blades are arranged in a staggered manner.

[0023] Further, the second stirring unit is arranged within a length range of 1 / 2 from the bottom of the stirring shell.

[0024] The patent provides a tobacco stirring device, which can stir the tobacco mixture added therein in multiple directions in the horizontal direction and the vertical direction, disperse the flocculation mixture, and make the stirring effect of the powder-liquid mixture more meet the process requirements. In addition, since the weight of tobacco itself is low, when stirring in the horizontal direction, the tobacco is easily bounced to the vertical side of the stirring shell, and then can be cut again by the second stirring unit, thereby increasing the uniformity. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above content of the patent and the following specific embodiments can be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are only examples of the claimed technical solutions.

[0026] Figure 1 Fig. 1 is a half sectional view of the stirring device of the present patent;

[0027] Figure 2 Fig. 2 is a schematic view of the inlaid platform of the present patent;

[0028] Figure 3 Fig. 3 is a schematic view of the multi-layer stirring blade of the present patent;

[0029] Figure 4 Fig. 4 is a schematic view of the second stirring unit cross-sectional position of the present patent.

[0030] In the drawings, the reference numerals are explained as follows:

[0031] Stirring housing: 1

[0032] Multi-layer stirring blade: 2

[0033] First motor: 3

[0034] First side stirring blade: 4

[0035] First side gear: 5

[0036] Second side stirring blade: 6

[0037] Second side gear: 7

[0038] Second motor: 8

[0039] Inlaid platform: 101

[0040] First side shaft hole: 1011

[0041] Second side shaft hole: 1012

[0042] Main shaft hole: 1013

[0043] Main shaft: 1014 DETAILED DESCRIPTION

[0044] The detailed features and advantages of the present patent are described in detail in the detailed description below, which are sufficient for any person skilled in the art to understand the technical content of the present patent and to implement it, and according to the description, claims and drawings disclosed in the specification, a person skilled in the art can easily understand the purposes and advantages related to the present patent.

[0045] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0046] As Figures 1 to 3As shown, a tobacco stirring device, the stirring device comprises a stirring housing 1, a first stirring unit and a second stirring unit, the first stirring unit is close to the bottom of the stirring housing 1, and the first stirring unit is arranged in parallel direction at the bottom of the stirring housing 1, the second stirring unit is arranged above the first stirring unit through the vertical side of the stirring housing 1, when the tobacco enters the stirring housing 1, the first stirring unit stirs the tobacco in horizontal direction, and the second stirring unit stirs the tobacco in vertical direction. Preferably, the stirring housing 1 is in the form of a tank, the tobacco material is added from the top of the stirring housing 1 to the inside, and the tobacco material falls to the bottom of the stirring housing 1 under the action of gravity, and is sheared and stirred by the first stirring unit, and part of the tobacco material is ejected into the second stirring unit for further shearing in the shearing process. In addition, since the first stirring unit and the second stirring unit are arranged at different positions perpendicular to each other, the tobacco material is prevented from being stuck, the uniformity of the tobacco material mixing is further increased, and especially for the stirring of the powder-liquid mixture of tobacco, the flocculation condition is reduced.

[0047] Specifically, the second stirring unit comprises a first side stirring blade 4 and a second side stirring blade 6, and the stirring directions of the first side stirring blade 4 and the second side stirring blade 6 are opposite. Preferably, the cutting edge of the first side stirring blade 4 is oriented in counterclockwise direction, and the cutting edge of the second side stirring blade 6 is oriented in clockwise direction, and the tobacco material can pass through and be sheared between the first side stirring blade 4 and the second side stirring blade 6. In addition, the rotation directions of the first side stirring blade 4 and the second side stirring blade 6 can be controlled and adjusted by an external driving device (such as a second motor 8), and during the operation of the stirring device, the operator can control the stirring direction of the tobacco material in the stirring housing 1 by adjusting the rotation directions of the first side stirring blade 4 and the second side stirring blade 6, so as to intervene in the stirring process to improve the uniformity.

[0048] Specifically, the second stirring unit further comprises a first side shaft, a second side shaft, a first side gear 5 and a second side gear 7, the first side gear 5 and the second side gear 7 are arranged outside the stirring shell 1, one end of the first side shaft is connected to the first side stirring blade 4 by penetrating the stirring shell 1, and the other end of the first side shaft is connected to the first side gear 5; one end of the second side shaft is connected to the second side stirring blade 6 by penetrating the stirring shell 1, and the other end of the second side shaft is connected to the second side gear 7, so that the first side stirring blade 4 and the second side stirring blade 6 can further shear and stir the tobacco material inside the stirring shell 1, while the remaining parts are arranged outside the stirring shell 1 to prevent the space from being squeezed by the tobacco material, and further prevent the risk of the gears and other parts being stuck by the tobacco material. In addition, the gears and other parts often need to be regularly maintained by applying lubricating oil, etc. If they are arranged inside the stirring shell 1, the machine needs to be stopped for a long time for maintenance, and there is also a risk of gear leakage during operation to contaminate the tobacco material. Since users pay great attention to the smoking aroma of tobacco, it is necessary to pay more attention to the risk of contaminating the tobacco material during tobacco processing.

[0049] Specifically, the first side gear 5 and the second side gear 7 are connected in meshing to realize synchronous rotation, and thus only one driving device can be arranged to synchronously control the first side gear 5 and the second side gear 7.

[0050] Specifically, the second stirring unit further comprises a second motor 8 connected to the first side gear 5 and / or the second side gear 7. For example, the second motor 8 is connected to the second side stirring blade 6 through the second side shaft, and the rotation of the first side stirring blade 4 is realized synchronously through the meshing connection of the first side gear 5 and the second side gear 7. In addition, the second motor 8 can also be connected to the first side stirring blade 4 through the first side shaft, and the rotation of the second side stirring blade 6 is realized synchronously through the meshing connection of the first side gear 5 and the second side gear 7.

[0051] Specifically, the stirring shell 1 is provided with an embedded platform 101 on the vertical side, the embedded platform 101 is provided with a first side shaft hole 1011 and a second side shaft hole 1012, the first side shaft penetrates the first side shaft hole 1011 to enter the stirring shell 1 to connect the first side stirring blade 4; the second side shaft penetrates the second side shaft hole 1012 to enter the stirring shell 1 to connect the second side stirring blade 6.

[0052] Specifically, the first stirring unit comprises a plurality of layers of stirring blades 2. Among them, the plurality of layers of stirring blades 2 are penetrated by the main shaft 1014 of the first stirring unit and fixed in position, and there is a gap between adjacent blades.

[0053] Specifically, the first stirring unit further comprises a first motor 3 and a main shaft 1014, the first motor 3 is arranged outside the stirring shell 1, one end of the main shaft 1014 penetrates through the bottom of the stirring shell 1 to connect the multi-layer stirring blades 2, and the other end of the main shaft 1014 is connected with the first motor 3. More specifically, the bottom of the stirring shell 1 is also provided with an embedded platform, the embedded platform is provided with a main shaft hole 1013 penetratingly, and the first stirring unit is arranged in the embedded platform. Preferably, the main shaft 1014 penetrates through the main shaft hole 1013 to connect the multi-layer stirring blades 2, and the first motor 3 drives the multi-layer stirring blades 2 on the main shaft 1014 to stir and shear outside the stirring shell 1 through a connecting gear, so that the gear and other components can be arranged outside the stirring shell 1 to prevent the space for extruding the tobacco material, and the risk of gear liquid leakage polluting the tobacco material during operation can also be avoided.

[0054] Specifically, as shown in Figure 3 , the side direction of the blade is provided with a sawtooth shape, and the main shaft 1014 is taken as a division point, so that the same blade is arranged in two side directions, and the uniformity of the tobacco material mixing is improved.

[0055] Specifically, the multi-layer stirring blades 2 are at least three layers, and the adjacent blades of the multi-layer stirring blades 2 are arranged staggeredly.

[0056] Specifically, the second stirring unit is arranged within the radial length range of 1 / 2 of the bottom of the stirring shell 1, which can be further arranged within the radial length L range in Figure 4 , so that the tobacco material that is ejected into the second stirring unit can be further sheared, and at the same time, the second stirring unit is close to the first stirring unit, so that the flocculation mixture can be stirred more uniformly.

[0057] More specifically, the size of the multi-layer stirring blades 2 is greater than that of the first side stirring blade 4 and the second side stirring blade 6, so that in the stirring process, the stirring of the first stirring unit is mainly used, the stirring of the second stirring unit is used as auxiliary and adjustment of the material stirring direction, and the tobacco material is prevented from overflowing in the process of adjusting the material stirring direction.

[0058] Specifically, the first motor 3 and the second motor 8 are servo motors, and the servo system is an automatic control system that enables the position, orientation, state, and other outputs of an object to follow the arbitrary changes of the input target (or given value). Servo positioning mainly relies on pulses. Basically, it can be understood as follows: when a servo motor receives a pulse, it will rotate an angle corresponding to the pulse, thereby achieving displacement. Since the servo motor itself has the function of sending pulses, the servo motor will send a corresponding number of pulses every time it rotates an angle. In this way, the pulses received by the servo motor form a response, or a closed loop. In this way, the system knows how many pulses have been sent to the servo motor and how many pulses have been received back. In this way, the rotation of the motor can be accurately controlled, thereby achieving precise positioning, which can reach 0.001 mm.

[0059] More specifically, the servo motor is composed of the following parts: motor body, encoder, driver, controller, feedback system, and mechanical transmission device. The encoder is used to detect the position, speed, and direction of the rotor. The driver is used to control the operation of the motor, receives instructions from the controller, and outputs current to drive the motor. The controller is used to generate control signals and send them to the driver. The feedback system detects the state of the motor in real time through the encoder or other sensors and feeds back the signals to the driver to achieve closed-loop control. The mechanical transmission device is used to transmit the rotary motion of the motor to the load.

[0060] The working principle of the servo motor is as follows:

[0061] The controller sends target position, speed, or torque instructions to the driver.

[0062] The driver outputs current according to the instructions to drive the motor to rotate.

[0063] The encoder detects the position, speed, and direction of the motor in real time and feeds back the signals to the driver.

[0064] The driver adjusts the output current according to the feedback signal to make the motor accurately reach the target state.

[0065] More specifically, the servo motor comprises a base, the base is provided with an air inlet hole, a rotary support is installed on the base, the rotary support comprises an inner ring and an outer ring, the inner ring is connected with a stator assembly, the outer ring is connected with a rotor assembly, the rotor assembly is sleeved on the outer side of the stator assembly and an air gap exists between the two, the stator assembly is provided with a heat dissipation assembly, the rotor assembly comprises a rotor, a connecting cover plate and a connecting shaft, the rotor is provided with an air outlet hole, the air outlet hole is communicated with the air gap, one end of the rotor is connected with the outer ring of the rotary support, the other end is connected with the connecting cover plate, one end of the connecting shaft is connected with the connecting cover plate, the connecting shaft is a hollow shaft and is provided with air holes on the surface, a centrifugal fan is installed on the connecting shaft, the centrifugal fan is arranged in a staggered manner with the air holes, and the centrifugal fan is used to suck cold air from the outside along the air inlet hole, and the cold air sequentially passes through the heat dissipation assembly, the air holes, the air gap and is discharged from the air outlet hole.

[0066] Further, the rotor assembly further comprises a plurality of magnetic steels, the plurality of magnetic steels are distributed on the inner wall of the rotor in rows and surround a spiral air flow channel.

[0067] Further, the stator assembly comprises a stator support, an armature, an encoder and a fixed bearing, the stator support is fixed with the inner ring of the rotary support, the armature is sleeved on the outer side of the stator support, the encoder, the fixed bearing and the heat dissipation assembly are sequentially installed in the stator support.

[0068] Further, the rotor is located on the outer side of the armature and an air gap exists between the rotor and the armature, and the air gap constitutes the air gap.

[0069] During the operation of the motor, the stator assembly and the rotor assembly will generate electromagnetic fields, the two electromagnetic fields interact and generate electromagnetic force, thereby driving the rotor to rotate, the rotor will drive the connecting cover plate, the connecting shaft and the centrifugal fan to rotate synchronously, the centrifugal fan generates centrifugal force and sucks cold air from the outside into the device through the air inlet hole on the base, under the continuous action of the centrifugal force, the cold air entering the device will sequentially pass through the heat dissipation assembly, the air holes on the connecting shaft and the air gap, and finally flow to the air outlet hole of the rotor and be discharged from the air outlet hole, and the cold air will contact and exchange heat in the inside of the stator assembly, the inside of the connecting shaft, the outside of the stator assembly and the inside of the rotor assembly in this circulation process, effectively reducing the temperature rise in the stator assembly, and reducing the temperature in the motor, so that the motor remains stable during operation.

[0070] Specifically, the tobacco stirring device provided by the patent is used in the preparation of reconstituted tobacco, and comprises the following steps:

[0071] S1, fresh hot air treatment is performed on the tobacco raw material, and storage is performed until the moisture content is 15% to 25%, to obtain primary tobacco leaves; S2, the primary tobacco leaves are subjected to hot air drying to obtain secondary tobacco leaves, and the hot air drying time is 10-20 minutes; S3, the secondary tobacco leaves are crushed by using the tobacco stirring device provided in the present patent, and reconstituted tobacco leaves are prepared according to the thick slurry method.

[0072] Further, the hot air temperature of the fresh hot air treatment in step S1 is 55°C to 90°C.

[0073] In addition, the storage time in step S1 is 2 hours to 24 hours.

[0074] Further, the hot air temperature of the hot air drying in step S2 is 120°C to 140°C.

[0075] Further, the method further comprises coating a moisture-proof agent on the surface of the reconstituted tobacco leaves prepared in step S3.

[0076] In addition, the moisture-proof agent is selected from one or more of sodium alginate, chitosan and stearic acid.

[0077] In addition, step S3 specifically comprises: crushing the secondary tobacco leaves by using the tobacco stirring device provided in the present patent, and then adding an atomizing agent, a binder, a fiber and a solvent, mixing in the tobacco stirring device to obtain a powder-liquid mixed slurry, applying the mixed slurry on a metal belt, and peeling off after drying to obtain reconstituted tobacco leaves.

[0078] In addition, according to the method for preparing reconstituted tobacco leaves, the mass ratio of the crushed second-stage tobacco leaves, the atomizing agent, the binder and the fiber is 100:(15-35):(2-4):(3-5).

[0079] In addition, the fiber is selected from one or more of hardwood bleached kraft pulp, softwood bleached kraft pulp and sedge pulp.

[0080] In addition, the binder is selected from one or more of starch, dextrin and polyvinyl alcohol.

[0081] In addition, before step S1, it further comprises: loosening and steam conditioning the tobacco raw material, and the temperature of the processed tobacco raw material is 60°C to 90°C, and the moisture content of the processed tobacco raw material is 15% to 25%.

[0082] In addition, before step S1, the step further comprises removing impurities from the tobacco raw material to remove non-tobacco impurities.

[0083] Further, in step S3, the secondary tobacco leaf has a particle size of 250 mesh to 300 mesh after being crushed; and the hydrogen bonding between the fibers in the secondary tobacco leaf and the fibers added above can be promoted after the fibers are added in the mixed slurry, thereby improving the tensile strength of the reconstituted tobacco leaf. The mixed slurry is coated on a metal belt to form a sheet with a specified width. In the embodiment of the present application, the thickness of the sheet is 0.15 mm to 0.4 mm, and then dried and shaped. After peeling, low-temperature drying and cutting, the reconstituted tobacco leaf is obtained. The width of the sheet after being cut is 0.8 mm to 1.1 mm, the length is 30 ± 15 mm, and the thickness is 0.15 mm to 0.4 mm.

[0084] The terminology and phraseology used here is solely used for the purpose of description and the patent should not be limited to the terms and phraseology. The use of such terms and phraseology does not preclude the use of other alternatives and modifications that are neither explicitly mentioned nor implicitly rendered evident by the description (or part thereof). It is recognized that various modifications can exist and should be included in the scope of the claims. Other modifications, changes and alternatives can also exist. Accordingly, the claims should be considered to cover all such equivalents.

[0085] Also, it should be noted that although the patent has been described with reference to the current specific embodiments, a person of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the patent, and various equivalent changes or replacements can be made without departing from the spirit of the patent, therefore, any changes or modifications to the above embodiments within the scope of the spirit of the patent will fall within the scope of the claims of the patent.

Claims

1. A tobacco stirring device, characterized by, The stirring device comprises a stirring housing, a first stirring unit and a second stirring unit, the first stirring unit is close to the bottom of the stirring housing, and the first stirring unit is arranged in parallel direction at the bottom of the stirring housing, and the second stirring unit is arranged above the first stirring unit through the vertical side of the stirring housing, When the tobacco enters the stirring housing, the first stirring unit stirs the tobacco in horizontal direction, and the second stirring unit stirs the tobacco in vertical direction.

2. The stirring device according to claim 1, characterized in that The second stirring unit comprises a first side stirring blade and a second side stirring blade, and the stirring directions of the first side stirring blade and the second side stirring blade are opposite.

3. The stirring device of claim 2, wherein The second stirring unit further comprises a first side shaft, a second side shaft, a first side gear and a second side gear, The first side gear and the second side gear are arranged outside the stirring housing, One end of the first side shaft is connected with the first side stirring blade through the stirring housing, and the other end of the first side shaft is connected with the first side gear; One end of the second side shaft is connected with the second side stirring blade through the stirring housing, and the other end of the second side shaft is connected with the second side gear.

4. The stirring device of claim 3, wherein The first side gear and the second side gear are connected in meshing mode.

5. The stirring device of claim 4, wherein The second stirring unit further comprises a second motor, and the second motor is connected with the first side gear and / or the second side gear.

6. The stirring device of claim 3, wherein The vertical side of the stirring housing is provided with an embedded platform, The embedded platform is provided with a first side shaft hole and a second side shaft hole, The first side shaft is connected with the first side stirring blade through the first side shaft hole; The second side shaft is connected with the second side stirring blade through the second side shaft hole.

7. The stirring device of claim 1, wherein The first stirring unit comprises a plurality of layers of stirring blades.

8. The stirring device of claim 7, wherein The first stirring unit further comprises a first motor and a main shaft, the first motor is arranged outside the stirring housing, one end of the main shaft penetrates the bottom of the stirring housing to connect the plurality of layers of stirring blades, and the other end of the main shaft is connected with the first motor; The side edges of the plurality of layers of stirring blades are provided with sawtooth shapes, and the sawtooth shapes are arranged in two side edge directions of the same blade with the main shaft as the division point.

9. The stirring device of claim 7, wherein The plurality of layers of stirring blades are at least three layers, and the adjacent blades of the plurality of layers of stirring blades are arranged staggered.

10. The stirring device of claim 1, wherein The second stirring unit is arranged within a length range of 1 / 2 from the bottom of the stirring housing.

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