A tobacco liquid spraying device and its working method

Abstract

This invention belongs to the field of tobacco sheet processing technology and discloses a tobacco liquid spraying device and its working method. It includes a storage tank, a screening machine, a spraying pipeline, and nozzles. The storage tank contains the liquid and is connected to the spraying pipeline via the screening machine. A nozzle is installed at the end of the spraying pipeline, and the liquid is sprayed onto the sheet below through the nozzle. A vibrating motor is installed at the bottom of the screening machine, and a filter screen is detachably installed in the middle of the screening machine. The vibrating motor drives the filter screen to vibrate. A discharge port is installed on the lower side of the filter screen and is connected to the spraying pipeline. The top of the filter screen is an inlet connected to the storage tank, and a drain port is provided on one side of the filter screen. This invention solves the problems of nozzle clogging and flavor cross-contamination when switching between different liquids in the prior art.

Description

Technical Field

[0001] This invention relates to the field of tobacco sheet processing technology, and in particular to a tobacco liquid spraying device and its working method. Background Technology

[0002] Tobacco sheets are reconstituted sheets made primarily from tobacco substances through a formula and processing. Tobacco powder and other water-soluble or oil-soluble liquids or powders are mixed evenly to form a tobacco liquid, which is then sprayed onto the sheets through nozzles on a spraying device to create a specific flavor.

[0003] However, with existing technology, the presence of various impurities in the liquid coating can cause blockages at the nozzle outlet, preventing the liquid coating from being sprayed out. This results in uneven distribution of the liquid coating onto the tobacco sheet, leading to uneven or diluted flavor concentration in the heated cigarette core made from the tobacco sheet. Furthermore, when switching between different types of liquid coatings, residual liquid from the previous type remains in the spraying pipeline, causing mixing and an imbalance in the liquid ratio, resulting in loss of original flavor and cross-contamination. Even if the liquid coating is not switched, if the nozzle is restarted after a shutdown, the liquid remaining in the spraying pipeline will deteriorate, causing the heated cigarette core to lose its original flavor and reducing the quality of the final product. Summary of the Invention

[0004] The purpose of this invention is to provide a tobacco liquid spraying device and its working method, which solves the problems of nozzle clogging and flavor mixing when switching between different liquids in the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution: The present invention provides a tobacco liquid spraying device, including a storage tank, a screening machine, a spraying pipeline and a nozzle. The storage tank stores liquid, and the storage tank is connected to the spraying pipeline through the screening machine. A nozzle is installed at the end of the spraying pipeline, and the liquid is sprayed out along the nozzle onto a thin sheet on the lower side.

[0006] A vibration motor is installed at the bottom of the screening machine. A filter screen is detachably installed in the middle of the screening machine. The vibration motor drives the filter screen to vibrate. A discharge port is installed on the lower side of the filter screen and is connected to the spraying pipeline. The top of the upper side of the filter screen is the inlet and is connected to the storage tank. A drain port is provided on one side of the filter screen.

[0007] Preferably, an emulsifying pump is also installed between the screening machine and the storage tank, the emulsifying pump being able to shear and disperse the liquid material.

[0008] Preferably, a screw pump is installed in the spraying pipeline, and the screw pump can deliver liquid material.

[0009] Preferably, a buffer tank is installed between the screening machine and the spraying pipeline, and a stirring rod is provided inside the buffer tank to stir the liquid material evenly.

[0010] Preferably, a constant pressure valve, a pressure gauge, an electromagnetic flow meter, a regulating valve, and a first ball valve are installed sequentially on the spraying pipeline.

[0011] Preferably, the tobacco liquid spraying device further includes a cleaning pipeline, one end of which is connected to a water source and the other end is connected to the buffer tank. The buffer tank and the spraying pipeline are connected by a three-way valve. The three-way valve has a first drain port, a second drain port is installed at the end of the first ball valve, a second ball valve is installed between the nozzle and the regulating valve, and a third drain port is connected to the second ball valve.

[0012] Preferably, an air blowing assembly is installed between the three-way valve and the spraying pipeline, and the air blowing assembly is connected to the spraying pipeline through a third ball valve.

[0013] Preferably, the spraying pipeline is provided in three sets.

[0014] A method for operating a tobacco liquid spraying device, comprising the aforementioned tobacco liquid spraying device, and further comprising the following steps:

[0015] S1, the storage tank injects liquid into the buffer tank, the liquid enters the spraying pipeline through the three-way valve, the nozzle is closed, the first ball valve is opened, and the liquid is waited to flow out from the second drain port of the first ball valve;

[0016] S2, close the first ball valve, open the nozzle, and the liquid is sprayed from the nozzle onto the film;

[0017] S3, after spraying is complete, turn on the water source and the three-way valve. Water enters the buffer tank and is discharged through the first drain outlet.

[0018] S4, close the three-way valve, open the second ball valve, and water flows out from the third drain outlet;

[0019] S5, close the second ball valve, open the first ball valve, and water flows out from the second drain outlet;

[0020] S6, turn off the water supply, turn on the air blowing assembly and the third ball valve, and blow the gas into the spraying pipeline.

[0021] Beneficial effects: Before spraying, the liquid in the buffer tank is first filled into the spraying pipeline, allowing any residual liquid in the pipeline to be discharged along the second drain port. This prevents any spoiled or other-flavored liquid in the pipeline from affecting the aroma and taste of the new liquid. Then, the spraying mode is turned on. After spraying, the pipeline between the three-way valve and the buffer tank, the spraying pipeline, and the pipeline where the nozzle is located are cleaned in sequence. The cleaning is carried out in sections according to the order in which the cleaning liquid flows, making the entire tobacco liquid spraying device cleaner and reducing liquid residue. This prevents cross-contamination of flavors when switching to different liquids for spraying next time. In addition, the added screening machine filters impurities inside the liquid, reducing the occurrence of impurities clogging the nozzles. Attached Figure Description

[0022] Figure 1 This is a flowchart of the tobacco liquid spraying device of the present invention.

[0023] In the diagram: 1. Storage tank; 2. Screening machine; 3. Spraying pipeline; 4. Nozzle; 5. Filter screen; 6. Inlet; 7. Outlet; 8. Drainage port; 9. Emulsifying pump; 10. Screw pump; 11. Buffer tank; 12. Stirring rod; 13. Constant pressure valve; 14. Pressure gauge; 15. Electromagnetic flow meter; 16. Regulating valve; 17. First ball valve; 18. Cleaning pipeline; 19. Three-way valve; 20. Second ball valve; 21. Third ball valve; 22. Air blowing assembly; 23. First drain outlet; 24. Second drain outlet; 25. Third drain outlet. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0025] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0028] In the current technology, after the liquid material is prepared, it is directly sprayed onto the sheet through the nozzle. After the spraying process is paused and restarted, the material in the spraying pipeline will deteriorate, resulting in a decrease in the quality of the liquid material sprayed onto the sheet. This leads to a decline in the taste of the final heated cigarette core. If a different liquid material is switched, the residual liquid material in the spraying pipeline will mix with the new liquid material, causing cross-contamination of flavors. At the same time, if the liquid material contains a lot of impurities, it will cause the nozzle to become clogged, resulting in incomplete spraying of the sheet. This makes the heated cigarette core made from the tobacco sheet taste weak and ultimately affects the quality of the product.

[0029] To solve the above problems, such as Figure 1 As shown, the present invention provides a tobacco liquid spraying device, including a storage tank 1, a screening machine 2, a spraying pipeline 3, and a nozzle 4. The storage tank 1 stores the liquid and is connected to the spraying pipeline 3 through the screening machine 2. The spraying pipeline 3 is equipped with a nozzle 4 at its end, and the liquid is sprayed out along the nozzle 4 onto a thin sheet on its lower side. A vibrating motor is installed at the bottom of the screening machine 2, and a filter screen 5 is detachably installed in the middle of the screening machine 2. The vibrating motor drives the filter screen 5 to vibrate. A discharge port 7 is installed on the lower side of the filter screen 5 and is connected to the spraying pipeline 3. The upper side of the filter screen 5 near the top is an inlet 6, which is connected to the storage tank 1. A drain port 8 is provided on one side of the filter screen 5.

[0030] Different types of liquid materials are formulated with different materials, resulting in different types of impurities. When the liquid material passes through the screening machine 2, it first falls onto the filter screen 5. The filter screen 5, vibrated by the bottom motor, forms a thin, evenly distributed layer. Liquid materials that do not meet the requirements cannot pass through the filter screen 5 and are discharged. Materials smaller than the mesh size of the filter screen 5 pass through the filter screen 5 and reach the buffer tank 11. Materials that do not pass through the filter screen 5 are discharged from the drain port 8. The mesh size of the filter screen 5 is smaller than the diameter of the nozzle 4, ensuring that the nozzle 4 remains unobstructed and reducing clogging. This allows the liquid material sprayed onto the sheet to achieve the expected spray volume, thus guaranteeing the quality of the heated cigarette core made from the tobacco sheet and ensuring consistent quality. Furthermore, different mesh sizes of the filter screen 5 can be replaced depending on the type of liquid material, allowing the screening machine 2 to screen different types of liquid materials, thus increasing its versatility.

[0031] An emulsifying pump 9 is also installed between the screening machine 2 and the storage tank 1. The emulsifying pump 9 can shear and disperse the liquid material, so that the liquid material can always be in a state of uniform mixing, avoiding the state of stratification that occurs when the material material is still for too long, and keeping the liquid material in a uniform state.

[0032] A screw pump 10 is installed in the spraying pipeline 3. Since the liquid material has the characteristics of being fluid but having a high viscosity, the screw pump 10 is used for transportation. The screw pump 10 itself can transport the liquid material, so that the liquid material has a certain force to enter the buffer tank 11.

[0033] A buffer tank 11 is installed between the screening machine 2 and the spraying pipeline 3. A stirring rod 12 is installed inside the buffer tank 11. The stirring rod 12 can stir the liquid evenly. The liquid can enter the spraying pipeline 3 evenly in the buffer tank 11. The stirring rod 12 can further mix the liquid evenly to obtain a high-quality liquid.

[0034] A constant pressure valve 13, a pressure gauge 14, an electromagnetic flow meter 15, a regulating valve 16, and a first ball valve 17 are sequentially installed on the spraying pipeline 3. Through the pressure gauge 14, electromagnetic flow meter 15, and regulating valve 16, the flow rate of the liquid material in the spraying pipeline 3 can be flexibly controlled. The pressure gauge 14, electromagnetic flow meter 15, and regulating valve 16 work in conjunction with a digital control display, allowing operators to visually observe the flow rate of the liquid material in the spraying pipeline 3 and precisely control the flow rate and spraying volume using the buttons on the digital control display.

[0035] The tobacco liquid spraying device also includes a cleaning pipeline 18, one end of which is connected to a water source and the other end is connected to a buffer tank 11. The buffer tank 11 is connected to the spraying pipeline 3 through a three-way valve 19. The three-way valve 19 has a first drain port 23. A second drain port 24 is installed at the end of the first ball valve 17. A second ball valve 20 is installed between the nozzle 4 and the regulating valve 16. A third drain port 25 is connected to the second ball valve 20.

[0036] After the water source is turned on, the water flow can enter the spraying pipe 3 to rinse the residual liquid inside. After rinsing, the wastewater containing the liquid can be discharged through the first drain outlet 23, the second drain outlet 24 and the third drain outlet 25 respectively, to prevent the residual liquid in the spraying pipe 3 from mixing with the new liquid, thereby improving the spraying quality of the liquid and improving the quality of the final tobacco product.

[0037] An air blowing assembly 22 is installed between the three-way valve 19 and the spraying pipeline 3. The air blowing assembly 22 is connected to the spraying pipeline 3 through the third ball valve 21. Since there are water stains remaining in the spraying pipeline 3, the compressed air can be blown into the spraying pipeline 3 through the air blowing assembly 22, thereby keeping the spraying pipeline 3 dry, preventing rust, and facilitating the subsequent filling of the liquid material.

[0038] The spraying pipeline 3 is set with three sets, and each set of spraying pipeline 3 is followed by a nozzle 4, so that the amount of liquid sprayed onto the thin film can reach the target value.

[0039] The present invention also discloses a method for operating a tobacco liquid spraying device, comprising the following steps:

[0040] S1, storage tank 1 injects liquid into buffer tank 11, liquid enters spraying pipeline 3 through three-way valve 19, nozzle 4 is closed, first ball valve 17 is opened, waiting for liquid to flow out from the second drain port 24 of first ball valve 17;

[0041] S2, close the first ball valve 17, open the nozzle 4, and spray the liquid from the nozzle 4 onto the sheet;

[0042] S3, after spraying is completed, turn on the water source and the three-way valve 19, and the water enters the buffer tank 11 and is discharged along the first drain outlet 23;

[0043] S4, close the three-way valve 19, open the second ball valve 20, and water flows out from the third drain outlet 25;

[0044] S5, close the second ball valve 20, open the first ball valve 17, and water flows out from the second drain outlet 24;

[0045] S6, turn off the water supply, turn on the air blowing component 22 and the third ball valve 21, and blow the gas into the spraying pipeline 3.

[0046] Step S1 involves pre-filling the spraying pipe 3 with the liquid material until it flows out from the second drain port 24. The second drain port of the first ball valve 17 can also be connected to the storage tank 1. During pre-filling, excess liquid material can be sent back to the storage tank 1 or discarded. If the liquid material can be recycled, the cost can be reduced. After pre-filling, the spraying pipe 3 is filled with brand new liquid material, and the impurities in the spraying pipe 3 have been squeezed out by the new liquid material from the second drain port 24. Then, normal spraying can be started.

[0047] After spraying is completed, the cleaning process is initiated. Due to the long pipeline of the entire tobacco liquid spraying device, this invention is divided into three cleaning stages. After ensuring that the previous stage has been cleaned, the next stage of cleaning is initiated. The first stage cleans the pipeline between the three-way valve 19 and the buffer tank 11. The wastewater after cleaning will flow out from the first drain port 23 on the three-way valve 19. The second stage cleans the residual liquid in the spraying pipeline 3 after the three-way valve 19. The wastewater after cleaning will flow out from the third drain port 25 on the pipeline. Finally, the third stage of cleaning is initiated. Clean water will fill the entire pipeline of the tobacco liquid spraying device and finally flow out from the second drain port 24 after cleaning the nozzle 4. Each stage cleans a part of the tobacco liquid spraying device, improving cleaning efficiency. The wastewater discharged from the first drain port 23, the second drain port 24 and the third drain port 25 can be directly observed to see whether the pipeline is clean, making the cleaning process simple and efficient.

[0048] Afterwards, since there is still water residue in the pipeline, compressed air is blown into the pipeline through the air blowing component 22. This keeps the inside of the pipeline dry and prevents rust. When the liquid fills the pipeline again, the pipeline has been cleaned. The excess liquid in the pre-filling can be returned to the storage tank 1 for reuse.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A working method of a tobacco liquid spraying device, applied to the tobacco liquid spraying device, and characterized in that, The tobacco liquid spraying device comprises a storage tank (1), a screening machine (2), a spraying pipeline (3) and a nozzle (4), the storage tank (1) stores liquid, the storage tank (1) is communicated with the spraying pipeline (3) through the screening machine (2), the nozzle (4) is installed at the end of the spraying pipeline (3), and the liquid is sprayed onto the lower sheet through the nozzle (4); A vibrating motor is installed at the bottom of the screening machine (2), a filter screen (5) is detachably installed in the middle of the screening machine (2), the vibrating motor drives the filter screen (5) to vibrate, a discharge port (7) is installed at the lower side of the filter screen (5), the discharge port (7) is communicated with the spraying pipeline (3), an inlet port (6) is arranged at the upper top of the filter screen (5), the inlet port (6) is communicated with the storage tank (1), and a drain port (8) is arranged on one side of the filter screen (5); A buffer tank (11) is installed between the screening machine (2) and the spraying pipeline (3), a stirring rod (12) is arranged in the buffer tank (11), and the stirring rod (12) can uniformly stir the liquid; A constant pressure valve (13), a pressure gauge (14), an electromagnetic flowmeter (15), an adjusting valve (16) and a first ball valve (17) are sequentially installed on the spraying pipeline (3); The tobacco liquid spraying device further comprises a cleaning pipeline (18), one end of the cleaning pipeline (18) is communicated with a water source, the other end is communicated with the buffer tank (11), the buffer tank (11) and the spraying pipeline (3) are communicated through a three-way valve (19), a first blow-off port (23) is formed in the three-way valve (19), a second blow-off port (24) is installed at the end of the first ball valve (17), a second ball valve (20) is installed between the nozzle (4) and the adjusting valve (16), and a third blow-off port (25) is connected to the second ball valve (20); A gas blowing assembly (22) is installed between the three-way valve (19) and the spraying pipeline (3), and the gas blowing assembly (22) is communicated with the spraying pipeline (3) through a third ball valve (21); The working method of the tobacco liquid spraying device comprises the following steps: S1, the storage tank (1) injects the liquid into the buffer tank (11), the liquid enters the spraying pipeline (3) through the three-way valve (19), the nozzle (4) is closed, the first ball valve (17) is opened, and the liquid flows out from the second blow-off port (24) of the first ball valve (17); S2, the first ball valve (17) is closed, the nozzle (4) is opened, and the liquid is sprayed onto the sheet from the nozzle (4); S3, after spraying, the water source and the three-way valve (19) are opened, the water enters the buffer tank (11) and flows out along the first blow-off port (23); S4, the three-way valve (19) is closed, the second ball valve (20) is opened, and the water flows out from the third blow-off port (25); S5, the second ball valve (20) is closed, the first ball valve (17) is opened, and the water flows out from the second blow-off port (24); S6, the water source is closed, the gas blowing assembly (22) and the third ball valve (21) are opened, and the gas is blown into the spraying pipeline (3).

2. The method of claim 1, wherein the tobacco solution spraying device is a device that sprays a tobacco solution on a tobacco sheet, and the device includes a solution tank, a pump, a nozzle, and a control unit. An emulsifying pump (9) is further installed between the screening machine (2) and the storage tank (1), and the emulsifying pump (9) can shear and disperse the liquid.

3. The method of claim 2, wherein the tobacco solution is sprayed in a predetermined pattern. A screw pump (10) is installed in the spraying pipeline (3), and the screw pump (10) can convey the liquid.

4. The method of claim 1, wherein the tobacco solution spraying device is characterized by, The spraying pipeline (3) is provided with three groups respectively.

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