Stable thick slurry method reconstituted tobacco tape casting device

Abstract

The utility model relates to the technical field of reconstituted tobacco production and processing, in particular to a stable thick slurry method reconstituted tobacco tape casting device which comprises an equipment rack, a tape casting box, a material mixing device, a quantitative tape casting baffle, a forming steel belt and a hub, the hub is rotatably arranged on the equipment rack, the forming steel belt is arranged on the outer side of the hub in a sleeving mode, and the quantitative tape casting baffle is arranged on the outer side of the hub. The molded steel belt moves downstream along with the rotation of the hub; the casting box is placed on a forming steel belt through a turner, and the casting box fluctuates up and down in the vertical direction along with the forming steel belt; a buffer tank is arranged at the bottom of the casting box; the material mixing device is used for secondarily mixing thick slurry in the buffer tank; a first casting gap is reserved between the quantitative casting baffle and the forming steel belt; a casting scraper is arranged at a slurry outlet of the casting box, a second casting gap is reserved between the casting scraper and the molding steel belt, and when the liquid level of secondarily mixed thick slurry is higher than the height of the top in the buffer tank, the thick slurry flows out from the top of the buffer tank, flows through the first casting gap and then flows out from the second casting gap.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reconstituted tobacco production and processing, more specifically, to a stable consistency pulp method reconstituted tobacco casting forming device. BACKGROUND

[0002] Because the raw material particles, additional fiber particles, adhesives and smoking agents and other materials in the consistency pulp method reconstituted tobacco pulp can be uniformly distributed in the surface layer and inner layer of the reconstituted tobacco during forming, the consistency pulp method reconstituted tobacco has a higher degree of homogenization, better processing resistance, uniform heat conduction and uniform smoke delivery, which is one of the main reasons for its use as a heating cigarette tobacco segment material. For example, the "iQOS" cigarette developed by Philip Morris uses ordered arrangement of consistency pulp method reconstituted tobacco.

[0003] Currently, researchers pay more attention to the processing technology and raw material formula of the thick slurry method for reconstituted tobacco for heat-not-burn cigarettes. However, in addition to the processing technology and raw material formula, the uniformity of the thickness of the reconstituted tobacco also has an important influence on the draw resistance and weight of the cigarette. Due to the deviation of the thickness of the forming steel belt and the circumferential runout of the hub, it is easy to cause the thickness of the reconstituted tobacco to fluctuate greatly during the casting forming process of the thick slurry method for reconstituted tobacco. In the existing technology, the thickness of the next batch of reconstituted tobacco is adjusted by adjusting the gap between the thickness adjusting roller or scraper and the steel belt after the preparation of the reconstituted tobacco is completed, and there is no way to adjust the thickness of the reconstituted tobacco slurry film in real time during the preparation process. For example, ZL201921935546.0 discloses "a forming and drying system for reconstituted tobacco for heat-not-burn cigarettes by thick slurry method", which discloses a forming and drying system for reconstituted tobacco for heat-not-burn cigarettes by thick slurry method, which mentions that the thick slurry is formed by casting box casting forming and the thickness of the reconstituted tobacco sheet after drying and peeling is adjusted by thickness adjusting roller. No targeted development of casting system can realize the adjustment of the thickness of the reconstituted tobacco during the preparation process. ZL201921935579.5 discloses "a forming system for preparing reconstituted tobacco sheet by casting method", which discloses a method for adjusting the thickness of the reconstituted tobacco by adjusting the gap between the knife door and the steel belt. The patent CN106998784A applied by Philip Morris Tobacco Company in China discloses "casting equipment for producing casting web of homogenized tobacco material", which sets up a rejection scraper to remove the slurry film formed by the clumps in the slurry, and then adjusts the gap between the scraper and the steel belt to realize the precise adjustment of the thickness of the reconstituted tobacco by thick slurry method. CN214229823U develops a follow-up casting forming device for reconstituted tobacco slurry for heat-not-burn cigarettes, which can float and change with the thickness deviation of the forming steel belt and the circumferential runout of the hub, so as to keep the gap between the casting scraper and the upper surface of the forming steel belt stable, keep the casting thickness of the thick slurry stable, and finally improve the stability of the thickness of the reconstituted tobacco by thick slurry method, which provides support for improving the homogenization degree of the reconstituted tobacco by thick slurry method.

[0004] CN112515230A develops a constant state slurry forming system for reconstituted tobacco for heat-not-burn cigarettes, which can realize stable casting of the thick slurry, improve the stability of the slurry film and the reconstituted tobacco by thick slurry method in the longitudinal thickness and the consistency, avoid the holes in the slurry film and the reconstituted tobacco by thick slurry method caused by the blockage of the scraper bottom by the fiber group, and improve the "paper forming rate" of the reconstituted tobacco by thick slurry method.

[0005] In summary, in addition to the CN 214229823U and CN112515230A patent technologies, the existing patents are fixed on the equipment rack, and the thickness of the reconstituted tobacco is adjusted by adjusting the gap between the scraper and the steel belt. However, in the process of casting and forming of the thick slurry method reconstituted tobacco, due to the thickness deviation of the forming steel belt and the hub circumference jump, the thickness of the reconstituted tobacco fluctuates greatly during production, resulting in uneven filling of the cigarette during rolling and heating, and thus causing large changes in the resistance and weight of the cigarette.

[0006] CN112515230A develops a constant state of slurry forming system for thick slurry method reconstituted tobacco for heating cigarettes. The curtain type feeding unit in the patent makes the thick slurry first enter the thick slurry buffer tank above the casting box, and then makes the thick slurry flow down from the thick slurry buffer tank along the back wall of the casting box in a waterfall-like "water curtain" manner, avoiding the impact on the thick slurry in the casting box caused by directly feeding the thick slurry into the casting box through a feeding pipe or multiple feeding pipes without buffer in the prior art, so as to keep the consistency of the horizontal height and pressure of the thick slurry in the casting box, and keep the horizontal thickness and quantity of the slurry film and the thick slurry method reconstituted tobacco stable. Through multiple experiments, it is verified that the curtain type feeding unit in the patent makes the thick slurry flow down from the thick slurry buffer tank along the back wall of the casting box in a waterfall-like "water curtain" manner, which solves the consistency of the horizontal height and pressure of the thick slurry in the casting box. However, after the slurry flows down from the back wall of the casting box in a waterfall-like "water curtain" manner, it directly flows to the first scraper without being mixed horizontally, which makes it difficult to ensure the uniformity of the left, middle and right slurry, and thus causes certain differences in the horizontal quantity and uniformity.

[0007] In summary, it can cause uneven filling of the heating cigarette, and thus cause fluctuations in the resistance and weight of the cigarette. Therefore, in order to improve the stability of the horizontal and vertical quantity of the thick slurry method reconstituted tobacco, and ensure the homogenization of the thick slurry method reconstituted tobacco, it is expected by everyone.

[0008] Therefore, it is necessary to provide a stability thick slurry method reconstituted tobacco casting and forming device to solve the above problems. Practical new type content

[0009] The utility model discloses to overcome at least one defect (deficiency) of the prior art described above, and provide a stability thick slurry method reconstituted tobacco casting and forming device.

[0010] To solve the above technical problems, the technical scheme of the utility model is as follows: a stability thick slurry method reconstituted tobacco casting and forming device, comprising an equipment rack, a casting box, a mixing device, a quantitative casting baffle, a forming steel belt and a hub.

[0011] The hub is rotatably arranged on the equipment rack, the shaped steel belt is sleeved outside the hub, and the shaped steel belt moves downstream along with rotation of the hub;

[0012] The casting box is placed on the shaped steel belt through the turnover device, and the casting box fluctuates up and down in the vertical direction along with the shaped steel belt;

[0013] The bottom of the casting box is provided with a buffer groove, and the mixing device performs secondary mixing of thick slurry in the buffer groove;

[0014] A first casting gap is reserved between the quantitative casting baffle and the shaped steel belt;

[0015] A casting doctor blade is arranged at the slurry outlet of the casting box, a second casting gap is reserved between the casting doctor blade and the shaped steel belt, and when the liquid surface height of the thick slurry after secondary mixing is higher than the top height in the buffer groove, the thick slurry flows out from the top of the buffer groove and then flows out from the second casting gap after flowing through the first casting gap.

[0016] Further, the longitudinal section of the shaped steel belt and the hub has an upper tangent point and a lower tangent point, the casting box is installed at the upper tangent point of the hub and arranged on the side opposite to the moving direction of the shaped steel belt, because the casting box is installed at the upper tangent point of the hub, the shaped steel belt can support the casting box, and because the casting box is connected with the turnover device and arranged on the side opposite to the moving direction of the shaped steel belt, the thick slurry in the casting box can flow out better while the casting box flows downstream along with the shaped steel belt.

[0017] Further, a plurality of material conveying pipes for inputting different thick slurries are arranged in the buffer groove, the mixing device performs secondary mixing of the thick slurries in the buffer groove through left and right swinging, the setting of the material conveying pipes facilitates inputting of different thick slurries, and the left and right swinging of the mixing device can perform secondary mixing of different thick slurries, which is simple and convenient.

[0018] Further, the mixing device comprises a mixing installation support, a mixing frequency converter driver, a driving wheel and a mixing paddle.

[0019] The mixing installation support is arranged on the casting box;

[0020] The mixing variable frequency driver controls the driving wheel to swing left and right at a uniform speed and is arranged on the mixing installation support, and the mixing paddle is connected with the mixing variable frequency driver; since the mixing variable frequency driver can control the driving wheel to swing left and right at a uniform speed on the mixing installation support, when the mixing variable frequency driver controls the driving wheel to swing left and right, the mixing paddle can mix different thick slurries in the buffer tank, so that the thick slurries in the buffer tank are more uniform.

[0021] Further, the baffle adjusting hand wheel and the scraper adjusting hand wheel are further included;

[0022] The casting box is provided with a cover body, and the two sides of the casting box are provided with grooves;

[0023] The quantitative casting baffle is arranged in the grooves and can move up and down;

[0024] The baffle adjusting hand wheel and the scraper adjusting hand wheel are arranged on the cover body, and the baffle adjusting hand wheel is connected with the quantitative casting baffle through a first connecting shaft;

[0025] The scraper adjusting hand wheel is connected with the casting scraper through a second connecting shaft; when people rotate the baffle adjusting hand wheel on the cover body, the quantitative casting baffle moves up and down in the grooves on the two sides of the casting box, so as to adjust the height of the first casting gap, and the scraper adjusting hand wheel adjusts the installation height of the casting scraper, so as to adjust the height of the second casting gap.

[0026] Further, the buffer tank is provided with a semicircular slope; when the liquid level of the thick slurry after secondary mixing is higher than the top height in the buffer tank, the thick slurry flows along the semicircular slope to the quantitative casting baffle, so that the flow of the thick slurry is facilitated by the semicircular slope arranged on the buffer tank.

[0027] Further, the height of the first casting gap between the quantitative casting baffle and the forming steel belt is greater than 20% of the height of the second casting gap between the casting scraper and the forming steel belt; since the second casting gap is smaller than the first casting gap, the passing amount of the thick slurry can be limited through the first casting gap, so as to reduce the passing amount of the thick slurry again through the second casting gap, thereby achieving the purpose of convenient control.

[0028] Further, the fluctuation range of the casting box fluctuating up and down in the vertical direction is 0-0.5mm; in actual application, the fluctuation range of the casting box fluctuating up and down in the vertical direction can be adjusted according to needs, which are all within the protection scope of the utility model.

[0029] Further, the adjustment accuracy range of the baffle adjusting hand wheel is ≤0.05mm, and since the adjustment accuracy range of the baffle adjusting hand wheel is ≤0.05mm, the installation accuracy of the quantitative casting baffle can be conveniently adjusted and controlled.

[0030] Further, the gap between the casting doctor blade and the forming steel belt is 0-5mm, and in actual application, the gap between the casting doctor blade and the forming steel belt can be adjusted as required, which is easily thought of by those skilled in the art.

[0031] Compared with the prior art, the beneficial effects of the technical scheme of the utility model are:

[0032] The stability thick slurry method reconstituted tobacco casting forming device disclosed by the utility model overcomes the technical prejudice in the prior art that the casting box and the hub are both fixed on the equipment rack, only the hub is fixed on the equipment rack, the casting box is placed on the forming steel belt, the forming steel belt moves downstream along with the hub, since the casting box and the forming steel belt are in direct contact, the casting box slightly fluctuates up and down in the vertical direction along with the forming steel belt, even when the forming steel belt has thickness deviation and the hub has circumferential runout, the gap between the casting doctor blade and the upper surface of the forming steel belt is stable, so that the thick slurry casting thickness is kept stable, the stability of the thick slurry method reconstituted tobacco thickness is improved, and the heating cigarette smoking resistance and weight stability are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is the structure schematic view of the first angle of the stability thick slurry method reconstituted tobacco casting forming device in the utility model.

[0034] Figure 2 is the structure schematic view of the second angle of the stability thick slurry method reconstituted tobacco casting forming device in the utility model.

[0035] Figure 3 is the structure schematic view of the third angle of the stability thick slurry method reconstituted tobacco casting forming device in the utility model.

[0036] Figure 4 is the side structure schematic view of the stability thick slurry method reconstituted tobacco casting forming device in the utility model.

[0037] Figure 5 is the sectional view of the stability thick slurry method reconstituted tobacco casting forming device at the casting box in the utility model.

[0038] Figure 6 is the structure schematic view of the connection between the turnover device and the casting box in the utility model.

[0039] Figure 7It is the structure schematic view of the flow casting box in the utility model.

[0040] Figure 8 It is the sectional structure schematic view of the flow casting box in the utility model.

[0041] Figure 9 It is the structure schematic view of the turnover device in the utility model.

[0042] Figure 10 It is the structure schematic view of the mixing device in the utility model.

[0043] In the figure, 1 is the equipment rack, 2 is the flow casting box, 3 is the mixing device, 4 is the quantitative flow casting baffle, 5 is the forming steel belt, 6 is the wheel hub, 7 is the turnover device, 8 is the buffer groove, 9 is the first flow casting gap, 10 is the slurry outlet, 11 is the flow casting scraper, 12 is the second flow casting gap, 13 is the upper cutting point, 14 is the lower cutting point, 15 is the material conveying pipe, 16 is the mixing installation support, 17 is the mixing frequency conversion driver, 18 is the driving wheel, 19 is the mixing paddle, 20 is the baffle adjusting hand wheel, 21 is the scraper adjusting hand wheel, 22 is the cover body, 23 is the groove, 24 is the first connecting shaft, 25 is the second connecting shaft, 26 is the semicircular slope, 27 is the turnover shaft, 28 is the first turnover connecting rod, 29 is the second turnover connecting rod, 30 is the hinged device, 31 is the turnover seat, and 32 is the rotating shaft. DETAILED DESCRIPTION

[0044] The accompanying drawings are only used for illustrative description, and cannot be understood as limitation to the patent; in order to better illustrate the embodiment, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures in the drawings and their description can be omitted.

[0045] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, can be fixed connection, or detachable connection, or integrally connected; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, and can be said to be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances. The technical scheme of the utility model is further explained below in combination with the drawings and examples.

[0046] As Figures 1-5As shown in the drawing, a kind of stability thick slurry method reconstituted tobacco casting forming device, including equipment rack 1, casting box 2, mixing device 3, quantitative casting baffle 4, forming steel belt 5 and wheel hub 6;Wheel hub 6 rotatably set on equipment rack 1, forming steel belt 5 is set on the outside of wheel hub 6, forming steel belt 5 moves downstream with the rotation of wheel hub 6;Casting box 2 is placed on forming steel belt 5 by inverter 7, and casting box 2 fluctuates up and down in vertical direction with forming steel belt 5;The bottom of casting box 2 is equipped with buffer groove 8, and mixing device 3 carries out secondary mixing of thick slurry in buffer groove 8;Quantitative casting baffle 4 and forming steel belt 5 reserve first casting gap 9;Casting box 2 is equipped with casting doctor 11 at slurry outlet 10, and casting doctor 11 and forming steel belt 5 reserve second casting gap 12, and when the liquid level height of thick slurry after secondary mixing is higher than the top height in buffer groove 8, thick slurry flows out from the top of buffer groove 8, and then flows out from second casting gap 12 after flowing through first casting gap 9, the utility model overcomes the technical prejudice in prior art that casting box 2 and wheel hub 6 are both fixed on equipment rack 1, only wheel hub 6 is fixed on equipment rack 1, and casting box 2 is placed on forming steel belt 5, so that forming steel belt 5 moves downstream with the rotation of wheel hub 6, since casting box 2 and forming steel belt 5 are directly contacted, so casting box 2 slightly fluctuates up and down in vertical direction with forming steel belt 5, so that even when forming steel belt 5 appears thickness deviation and wheel hub 6 appears circumferential jumping, the gap between casting doctor 11 and the upper surface of forming steel belt 5 can be kept stable, so that the thickness of thick slurry casting is kept stable, the stability of the thickness of thick slurry method reconstituted tobacco is improved, and then the stability of heating cigarette smoking resistance and weight is ensured.

[0047] As Figures 6-8 shown, the longitudinal section of forming steel belt 5 and wheel hub 6 has upper tangent point 13 and lower tangent point 14, casting box 2 is installed on the upper tangent point of wheel hub 6, and is arranged on the side opposite to the movement direction of forming steel belt 5, since casting box 2 is installed on the upper tangent point of wheel hub 6, forming steel belt 5 can support casting box 2, and since casting box 2 is connected with inverter 7, and is arranged on the side opposite to the movement direction of forming steel belt 5, so that thick slurry in casting box 2 can flow out better while following forming steel belt 5 to downstream, in the utility model, a plurality of material conveying pipes 15 for inputting different thick slurries are arranged in buffer groove 8, mixing device 3 carries out secondary mixing of thick slurry in buffer groove 8 by left and right swinging, the arrangement of material conveying pipe 15 facilitates the input of different thick slurries, and the left and right swinging of mixing device 3 can carry out secondary mixing of different thick slurries, which is simple and convenient.

[0048] As Figures 9-10As shown, the mixing device 3 comprises a mixing mounting bracket 16, a mixing frequency converter driver 17, a driving wheel 18 and a mixing paddle 19; the mixing mounting bracket 16 is arranged on the casting box 2; the driving wheel 18 controlled by the mixing frequency converter driver 17 can swing left and right at a uniform speed and is arranged on the mixing mounting bracket 16; the mixing paddle 19 is connected with the mixing frequency converter driver 17; since the mixing frequency converter driver 17 can control the driving wheel 18 to swing left and right at a uniform speed on the mixing mounting bracket 16, when the mixing frequency converter driver 17 controls the driving wheel 18 to swing left and right, the mixing paddle 19 can mix different thick slurries in the buffer tank 8, so that the thick slurries in the buffer tank 8 are more uniform; in addition, the mixing device 3 further comprises a baffle adjusting hand wheel 20 and a scraper adjusting hand wheel 21; the casting box 2 is provided with a cover body 22, and the casting box 2 is provided with grooves 23 on both sides; the quantitative casting baffle 4 is movably arranged in the grooves 23 on both sides; the baffle adjusting hand wheel 20 and the scraper adjusting hand wheel 21 are arranged on the cover body 22; the baffle adjusting hand wheel 20 is connected with the quantitative casting baffle 4 through a first connecting shaft 24; the scraper adjusting hand wheel 21 is connected with the casting scraper 11 through a second connecting shaft 25; when people rotate the baffle adjusting hand wheel 20 on the cover body 22, the quantitative casting baffle 4 can move up and down in the grooves 23 on both sides of the casting box 2, so as to adjust the height of the first casting gap 9, and the scraper adjusting hand wheel 21 adjusts the installation height of the casting scraper 11, so as to adjust the height of the second casting gap 12.

[0049] In the utility model, the semicircle slope 26 is arranged on the buffer tank 8, when the height of the thick slurry after secondary mixing is higher than the height of the top of the buffer tank 8, the thick slurry flows along the semicircle slope 26 to the quantitative casting baffle 4, the semicircle slope 26 arranged on the buffer tank 8 facilitates the flow of the thick slurry, wherein the height of the first casting gap 9 of the quantitative casting baffle 4 and the forming steel belt 5 is greater than 20% of the height of the second casting gap 12 of the casting scraper 11 and the forming steel belt 5, since the second casting gap 12 is smaller than the first casting gap 9, the passing amount of the thick slurry can be limited through the first casting gap 9, so as to reduce the passing amount of the thick slurry through the second casting gap 12, thereby achieving the purpose of convenient control, in the utility model, the fluctuation range of the casting box 2 in the vertical direction is 0-0.5mm, in actual application, the fluctuation range of the casting box 2 in the vertical direction can be adjusted according to needs, and the adjustment precision range of the baffle adjusting hand wheel 20 is ≤0.05mm, since the adjustment precision range of the baffle adjusting hand wheel 20 is ≤0.05mm, the installation precision of the quantitative casting baffle 4 can be adjusted and controlled conveniently, wherein the gap between the casting scraper 11 and the forming steel belt 5 is 0-5mm, in actual application, the gap between the casting scraper 11 and the forming steel belt 5 can be adjusted according to needs, and the gap is easily thought of by those skilled in the art.

[0050] In the utility model, the turnover device 7 includes a turnover shaft 27, a first turnover connecting rod 28, a second turnover connecting rod 29, a hinged device 30, a turnover seat 31 arranged on the equipment rack 1 and a rotating shaft 32 arranged on the casting box 2, wherein the turnover shaft 27 is rotatably arranged on the turnover seat 31, one end of the first turnover connecting rod 28 is connected with the turnover shaft 27, the other end is connected with the first end of the second turnover connecting rod 29 through the hinged device 30, and the tail end of the second turnover connecting rod 29 is connected on the rotating shaft 32. Through the arrangement of the turnover device 7, the situation that the casting box 2 moves to the downstream along with the rotation of the formed steel belt 5 can be avoided.

[0051] Embodiment

[0052] In the embodiment, the stable casting forming device suitable for heating cigarette thick paste method reconstituted tobacco slurry is operated as follows:

[0053] When it is necessary to adjust the thickness of the reconstituted tobacco, before starting, according to the requirement of the thickness of the heating cigarette thick paste method reconstituted tobacco, the second casting gap between the casting doctor blade and the formed steel belt is adjusted through the doctor blade adjusting handle, so that the first casting gap between the quantitative casting baffle and the formed steel belt is greater than 20% of the second casting gap between the casting doctor blade and the formed steel belt.

[0054] After the forming equipment runs for 10-20 min, the second casting gap between the casting doctor blade and the formed steel belt is calibrated again. If the requirement is reached, the thick paste feeding into the casting box can be carried out, and the casting forming and drying equipment of the thick paste method reconstituted tobacco is started again. If the gap does not reach the requirement value, the second casting gap between the doctor blade adjusting handle and the formed steel belt is adjusted again until the requirement is reached, and then the casting forming and drying equipment of the thick paste method reconstituted tobacco is started. The stable thick paste method reconstituted tobacco casting forming device disclosed in the utility model overcomes the technical prejudice in the prior art that the casting box and the hub are both fixed on the equipment rack, only the hub is fixed on the equipment rack, and the casting box is placed on the formed steel belt, so that the formed steel belt moves to the downstream along with the rotation of the hub. Since the casting box and the formed steel belt are in direct contact, the casting box slightly fluctuates up and down in the vertical direction along with the formed steel belt. Even when the thickness deviation of the formed steel belt and the circumferential jumping of the hub occur, the gap between the casting doctor blade and the upper surface of the formed steel belt is stable, so that the thick paste casting thickness is kept stable, the stability of the thick paste method reconstituted tobacco thickness is improved, and the stability of the heating cigarette smoking resistance and weight is ensured.

[0055] In the drawings, the position relationship is only used for example description, and cannot be understood as the limitation of the patent; obviously, the above embodiment of the utility model is only for clearly illustrating the utility model, and is not the limitation of the embodiment of the utility model. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or changes can be made. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement, etc. made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A stability thick slurry method reconstituted tobacco leaf casting forming device, comprising a device frame, a casting box, a mixing device, a quantitative casting baffle, a forming steel belt and a hub, characterized in that: the hub is rotatably arranged on the device frame, the forming steel belt is sleeved on the outside of the hub, and the forming steel belt moves downstream with the rotation of the hub; the casting box is placed on the forming steel belt through a turnover device, and the casting box fluctuates up and down in the vertical direction with the forming steel belt; the bottom of the casting box is provided with a buffer tank, and the mixing device performs secondary mixing of the thick slurry in the buffer tank; a first casting gap is reserved between the quantitative casting baffle and the forming steel belt; a casting scraper is arranged at the slurry outlet of the casting box, a second casting gap is reserved between the casting scraper and the forming steel belt, and when the liquid surface height of the thick slurry after secondary mixing is higher than the top height in the buffer tank, the thick slurry flows out from the top of the buffer tank and then flows out from the second casting gap after flowing through the first casting gap. The longitudinal section of the forming steel belt and the hub has an upper cutting point and a lower cutting point, the casting box is installed at the upper cutting point of the hub and is arranged on the side opposite to the moving direction of the forming steel belt. A plurality of material conveying pipes for inputting different thick slurries are arranged in the buffer tank, and the mixing device performs secondary mixing of the thick slurry in the buffer tank by left-right swinging. The mixing device comprises a mixing installation support, a mixing variable frequency driver, a driving wheel and a mixing paddle. The mixing installation support is arranged on the casting box. The mixing variable frequency driver controls the driving wheel to swing left and right at a uniform speed and is arranged on the mixing installation support, and the mixing paddle is connected with the mixing variable frequency driver.

2. The stable thick stock process reconstituted tobacco leaf casting device of claim 1, wherein: Further comprising a baffle adjusting hand wheel and a scraper adjusting hand wheel.

3. The stable thick stock process reconstituted tobacco leaf casting device of claim 1, wherein: A cover body is arranged on the casting box, and grooves are arranged on both sides of the casting box.

4. The stable thick stock process reconstituted tobacco leaf casting device of claim 1, wherein: The quantitative casting baffle is movably arranged in the grooves. The baffle adjusting hand wheel and the scraper adjusting hand wheel are arranged on the cover body, the baffle adjusting hand wheel is connected with the quantitative casting baffle through a first connecting shaft, and the scraper adjusting hand wheel is connected with the casting scraper through a second connecting shaft. A semicircular slope is arranged on the buffer tank, and when the liquid surface height of the thick slurry after secondary mixing is higher than the top height in the buffer tank, the thick slurry flows along the semicircular slope to the quantitative casting baffle.

5. The stable thick stock process reconstituted tobacco leaf casting device of claim 1, wherein: The first casting gap height between the quantitative casting baffle and the forming steel belt is greater than 20% of the second casting gap height between the casting scraper and the forming steel belt. The fluctuation range of the casting box fluctuating up and down in the vertical direction is 0-0.5 mm. The adjustment accuracy range of the baffle adjusting hand wheel is ≤0.05 mm. The gap between the casting scraper and the forming steel belt is 0-5 mm. ​ 6. The stable thick stock process reconstituted tobacco leaf casting device of claim 1, wherein: ​ 7. The stable thick stock process reconstituted tobacco leaf casting device of claim 1, wherein: ​ 8. The stable thick stock process reconstituted tobacco leaf casting device of claim 1, wherein: ​ 9. The stable thick stock process reconstituted tobacco leaf casting device of claim 5, wherein: ​ 10. The stability concentrated pulp process reconstituted tobacco leaf casting molding apparatus according to claim 1, characterized by: ​

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