A water washed tobacco device

Abstract

The utility model belongs to cigarette production equipment technical field, concretely relates to a kind of tobacco leaf washing device, including washing tank, tobacco leaf conveying structure and tobacco leaf cleaning structure, the tobacco leaf conveying structure includes end plate and conveying roller, two the end plate opposite installation in the middle part of both sides of washing tank, several The conveying roller is arranged and installed in the wave shape between two end plates;The end portion above of the conveying roller located in the wave shape middle wave trough position rotates and installs the tobacco leaf cleaning structure;In the process of conveying tobacco leaf by tobacco leaf conveying structure in the application, tobacco leaf is always below the water surface of warm water in washing tank;Wave-shaped conveying roller increases the contact area of water and tobacco leaf while conveying tobacco leaf, and directly contact with tobacco leaf, and carry out the order washing to tobacco leaf;The wave of water surface also flushes tobacco leaf in the conveying process;At the same time, the upper surface of tobacco leaf is washed by tobacco leaf cleaning structure, realizes the washing and conveying of tobacco leaf, and energy utilization rate is high.

Description

Technical Field

[0001] This utility model belongs to the technical field of cigarette production equipment, specifically relating to a water washing tobacco leaf device. Background Technology

[0002] In the cigarette manufacturing process, the purchased tobacco stacks are first loosened, and the loose individual tobacco leaves are conveyed via a conveyor belt for washing (or rinsing). Following this, the tobacco undergoes curing, processing, rehydration, flavoring, and packaging. The process of washing tobacco leaves involves controlling the water volume, water temperature, dwell time, and harvesting time. Washing the tobacco leaves removes dirt, sand, insect eggs, pesticide residues, etc., from the leaves; it also reduces breakage, evens out moisture content, and improves the processing resistance of the tobacco leaves.

[0003] However, current technology for washing tobacco leaves presents several challenges: It requires prior experimentation to determine the optimal soaking time in high-temperature water to prevent discoloration, thus establishing the appropriate dwell time. In practice, given the current water and steam usage, a soaking time of up to 10 minutes has minimal impact. The main challenge lies in improving washing efficiency and reducing energy consumption while effectively removing dirt, sand, insect eggs, and pesticide residues from the tobacco leaves. Utility Model Content

[0004] The purpose of this invention is to provide a water-washing tobacco leaf device to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0006] A tobacco leaf washing device includes a washing tank, a tobacco leaf conveying structure, and a tobacco leaf cleaning structure. The washing tank has an inlet at one end and an outlet at the other. The tobacco leaf conveying structure includes end plates and conveying rollers. Two end plates are installed opposite each other at the center of both sides of the washing tank. A plurality of conveying rollers are arranged in a wave-like pattern along the length of the washing tank between the two end plates. A sandwich layer is provided on both sides of the washing tank, and a driving assembly is installed within the sandwich layer. The driving assembly drives all the conveying rollers to rotate in the same direction, conveying the tobacco leaves input through the inlet to the outlet, and performing a wash on the surface of the tobacco leaves through the conveying rollers. The tobacco leaf cleaning structure is rotatably installed above each of the conveying rollers located at the trough of the wave pattern, and the tobacco leaf cleaning structure washes the surface of the tobacco leaves passing below it. The tobacco leaves are washed along the length of the washing tank by several conveying rollers, and are also washed sequentially during the washing process. In conjunction with the tobacco leaf cleaning structure, the tobacco leaves are rinsed during the conveying process. In this way, the upper and lower surfaces of the tobacco leaves are washed to remove dirt, sand, insect eggs, pesticide residues, etc. During this process, the tobacco leaves are rinsed in the washing tank for a short time, which can improve the washing efficiency, reduce the overall energy consumption of washing and conveying, even out the moisture content, improve the processing resistance of the tobacco leaves, and ensure the quality of the final product.

[0007] Furthermore, a guide plate is installed inside the feed inlet, and the upper surface of the guide plate is provided with an arc-shaped surface, wherein the height of the end face of the arc-shaped surface is higher than the lowest point of the arc-shaped surface. With this structural design, after the tobacco leaves enter the guide plate, the arc-shaped surface can guide and change the direction of the tobacco leaves, so that the tobacco leaves can better enter the rotation path of the first end conveying roller and be conveyed, making the entire conveying process smoother and more fluid.

[0008] Furthermore, the interlayer includes at least a drive cavity and a control cavity, with the drive assembly installed within the drive cavity. The drive cavity provides mounting space for drive motors and other electrical components, and encapsulates and waterproofs these electrical parts. The control cavity contains a circulation pipeline and a heating pipe array. The circulation pipeline is connected to the washing tank via a warm water circulation hole located at the bottom of the inner wall of the washing tank. The heating pipe array is connected to an external steam pipeline. The external steam pipeline inputs heat from the steam, which exchanges heat with the circulation pipeline within the control cavity. The circulation pipeline then transfers the heat to the water in the washing tank to control the water temperature. Additionally, water can be added directly to the washing tank; or water can be added to the washing tank after connecting to the circulation pipeline, thus controlling the water flow, water temperature, and heating.

[0009] Furthermore, the central area of ​​the washing tank is designated as a washing zone, and the area below the center of the washing tank is designated as a sedimentation zone. The sedimentation zone is equipped with several guide plates that slope downwards towards the feed inlet. A gap is left between the bottom of the guide plates and the bottom wall of the washing tank, and a filter plate is installed at this gap. The guide plates facilitate the filtration of impurities by the filter plate and promote water circulation.

[0010] Furthermore, a top cover is installed on the top of the washing tank, and a water-blocking plate is installed at the bottom of the top cover. The water-blocking plate is corrugated. The upper surface of the guide plate is set as a concave arc surface.

[0011] Furthermore, the tobacco cleaning structure includes a hydraulic purging pipe with several rows of nozzles arranged in a circumferential array on the hydraulic purging pipe; one end of the hydraulic purging pipe is provided with a water inlet, which is connected to a pressure pump through a water pipe; the other end of the hydraulic purging pipe is closed.

[0012] Furthermore, a discharge conveyor belt is installed obliquely upward at the discharge port, and the bottom end of the discharge conveyor belt is lower than the center height of the adjacent conveyor roller.

[0013] Furthermore, it also includes a PLC controller, which is electrically connected to a sensor group for monitoring the washing parameters of the washing tank, including water inflow, water temperature, and heating data; the PLC controller controls the water inflow, water outflow, and water temperature of the washing tank according to the washing parameters; and controls the operation of the tobacco leaf conveying structure and the tobacco leaf cleaning structure.

[0014] The utility model adopting the above technical solution has the following advantages:

[0015] In this application, during the conveying of tobacco leaves, the conveying rollers wash the tobacco leaves along the length of the washing tank, and perform a sequential wash during the process. This, combined with the established tobacco leaf cleaning structure, further rinses the tobacco leaves during transport. The conveying rollers are arranged in a wave-like pattern, and their rotation also agitates the water flow, resulting in a more thorough brushing of the tobacco leaves and a better cleaning effect. This achieves washing of both the upper and lower surfaces of the tobacco leaves. Simultaneously, the tobacco leaves are briefly immersed in the washing tank, resulting in high washing and conveying efficiency, reduced overall energy consumption for washing and conveying, improved processing resistance of the tobacco leaves, and guaranteed quality of the final product. The PLC controller automates the conveying and washing of the tobacco leaves, improving the consistency of the washing process and controlling the operation of each structure to ensure high energy utilization. Attached Figure Description

[0016] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0017] Figure 1 This is a schematic diagram of an embodiment of a water-washing tobacco leaf device according to the present invention;

[0018] Figure 2 This is a right-side view of an embodiment of a water-washing tobacco leaf device according to the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0020] Figure 4 This is a schematic diagram of the structure of the washing tank in an embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the tobacco leaf conveying structure in an embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the power transmission of the tobacco leaf conveying structure in an embodiment of this utility model;

[0023] Figure 7 This is a cross-sectional structural schematic diagram of another embodiment of the water-washing tobacco leaf device of this utility model;

[0024] Figure 8 This is a schematic diagram of the control principle of the PLC controller in this utility model;

[0025] The symbols for the main components are explained below:

[0026] 100. Washing tank; 101. Feed inlet; 102. Guide plate; 103. End cap; 104. Interlayer; 105. Discharge outlet; 106. Mounting groove; 107. Arc-shaped surface; 108. Warm water circulation hole; 109. Filter plate; 110. Guide plate; 111. Control chamber; 112. Drive chamber; 113. Return arc plate; 114. Top cover; 115. Water blocking plate; 116. Protrusion; 200. Tobacco leaf conveying structure; 201. End plate; 202. First conveying roller; 203. Second... 204. Conveyor roller; 205. Third conveyor roller; 206. Overlapping rod; 207. Roller shaft; 208. Drive wheel; 209. First transmission belt; 200. Second transmission belt; 301. Tobacco leaf cleaning structure; 301. Hydraulic purging pipe; 302. Water inlet; 303. Nozzle; 304. Plug; 305. Transmission wheel; 306. Intermediate wheel; 307. Third transmission belt; 400. Discharge conveyor belt; 401. Support roller; 402. Support frame; 403. Lifting belt; 500. PLC controller. Detailed Implementation

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0028] like Figures 1 to 7 As shown, in one embodiment, a tobacco washing device includes a washing tank 100, a tobacco conveying structure 200, and a tobacco cleaning structure 300. One end of the washing tank 100 has an inlet 101, and the other end has an outlet 105. The tobacco conveying structure 200 includes end plates 201 and conveying rollers. Two end plates 201 are installed opposite each other at the middle of the two sides of the washing tank 100. Several conveying rollers are arranged in a wave-like pattern along the length of the washing tank 100 between the two end plates 201. A sandwich layer 104 is provided on both sides of the washing tank 100. A driving assembly is installed within the sandwich layer 104. The driving assembly drives all the conveying rollers to rotate in the same direction, conveying the tobacco leaves input through the inlet 101 to the outlet 105, and washing the surface of the tobacco leaves through the conveying rollers. The tobacco cleaning structure 300 is rotatably installed above each conveying roller located at the trough of the wave pattern, and the tobacco cleaning structure 300 washes the surface of the tobacco leaves passing below it. Mounting grooves 106 are provided on both inner walls of the washing tank 100. The depth of the mounting grooves 106 is equal to the thickness of the end plate 201, and a sealing ring can be installed between the mounting grooves 106 and the end plate 201 to provide a waterproof seal. The number of conveying rollers can be flexibly set as needed, for example, the first conveying roller 202 and the second conveying roller 203 can be arranged in a wave-like pattern. The tobacco leaves are washed along the length of the washing tank 100 by the set conveying rollers, and the tobacco leaves are washed in the same direction during the washing process. In conjunction with the set tobacco leaf cleaning structure 300, the tobacco leaves are rinsed during the conveying process.

[0029] In this embodiment, both the first conveying roller 202 and the second conveying roller 203 are connected to the end plate 201 via a roller shaft 206, which is rotatable. The end of the roller shaft 206 extends into the interlayer 104 and is connected to the drive assembly. A drive cavity 112 and a control cavity 111 are provided within the interlayer 104, and the drive assembly is installed within the drive cavity 112. The drive assembly includes a drive motor, a drive wheel 207, a first transmission belt 208, and a second transmission belt 209. The drive wheel 207 is installed at the end of the roller shaft 206 and is connected via the first transmission belt 208 using a specific connection method. Figure 6As shown, for example, every four drive wheels 207 are connected by a first transmission belt 208; the power of the first transmission belt 208 is transmitted through a second transmission belt 209 connected to the first and last drive wheels 207 in each group of four drive wheels 207; the rightmost second conveyor roller 203 is connected to a third conveyor roller 204 via a transmission belt. The drive cavity 112 provides installation space for the drive motor, drive wheels 207, etc., and encapsulates and waterproofs these electrical components. A notch is provided between the mounting groove 106 and the interlayer 104 for the roller shaft 206 to pass through. The control cavity 111 is provided with a circulation pipeline and a heating pipe array; the circulation pipeline is connected to the washing tank 100 through a warm water circulation hole 108 opened at the bottom of the inner wall of the washing tank 100; the heating pipe array is connected to an external steam pipeline; the heat brought by the steam input from the external steam pipeline exchanges heat with the circulation pipeline in the control cavity 111; the circulation pipeline then transfers the heat to the water in the washing tank 100 to control the water temperature. The circulation pipeline includes a circulation pump and circulation pipes. A warm water circulation hole 108 at one end of the washing tank 100 serves as the outlet, and a warm water circulation hole 108 at the other end serves as the inlet, forming a circulation system. The heating pipe array is a spiral pipe array wound around the circulation pipes and connected to an external steam pipeline. The steam pipeline is an existing feature of the cigarette factory, such as the steam recovery pipeline of a vacuum dehumidifier, and will not be described in detail here.

[0030] In this embodiment, as Figure 3 As shown, the central area of ​​the washing tank 100 is designated as the washing area, and the area below the central part of the washing tank is designated as the sedimentation area. Several guide plates 110 inclined downwards towards the feed inlet 101 are installed in the sedimentation area. A gap is left between the bottom of the guide plates 110 and the bottom wall of the washing tank 100, and a filter plate 109 is installed in the gap. The filter plate 109 is embedded in the gap and can be easily disassembled and installed. The guide plates 110 help the filter plate 109 filter impurities and facilitate water circulation.

[0031] In fact, end caps 103 are installed at both ends of the washing tank 100 to seal the interlayer 104.

[0032] In fact, in this embodiment, a discharge conveyor belt 400 is installed obliquely upward at the discharge port 105, and the bottom height of the discharge conveyor belt 400 is lower than the center height of the adjacent conveyor roller; for example Figure 3 The left end of the discharge conveyor belt 400 is lower than the height of the second conveyor roller 203 on the right side of the washing tank 100.

[0033] The discharge conveyor belt 400 includes a support frame 402, a support roller 401, and a lifting belt 403. The support frame 402 is fixedly installed at the discharge port 105. The support roller 401 is installed at the bottom, middle, and top of the support frame 402. The lifting belt 403 is sleeved on the support roller 401. A movable wheel is installed at the top edge of the discharge port 105. The movable wheel supports the lifting belt 403 and prevents the lifting belt 403 from rubbing against the discharge port.

[0034] In fact, to drive the lifting belt, a servo motor can be installed on the outside of one of the support rollers 401 to achieve the driving function.

[0035] In fact, the lifting belt 403 can be selected from chain drive belts, belts, or conveyor rods as needed. The belt has integrated protrusions 116, such as... Figure 7 As shown, this improves the contact effect with the tobacco leaves and prevents the tobacco leaves from slipping off.

[0036] like Figure 3 As shown, in this embodiment, to smoothly connect the discharge conveyor belt 400, a horizontal third conveyor roller 204 is installed on the outside of the second conveyor roller 203 at the end; the third conveyor roller 204 mainly serves to connect the second conveyor roller 203 at the end with the discharge conveyor belt 400. To support the discharge conveyor belt 400, an overlapping rod 205 can be installed in the middle of the washing tank 100 to limit and support the support roller 401 at the end of the discharge conveyor belt 400.

[0037] In this embodiment, a guide plate 102 is installed inside the feed inlet 101. The upper surface of the guide plate 102 is provided with an arc-shaped surface 107, wherein the height of the end face of the arc-shaped surface 107 is higher than the lowest point of the arc-shaped surface 107. With this structural design, after the tobacco leaves enter the guide plate 102, the arc-shaped surface 107 can guide and change the direction of the tobacco leaves, so that the tobacco leaves can better enter the rotation path of the first end conveying roller and be conveyed, making the entire conveying process smoother and more fluid.

[0038] A top cover 114 is installed on the top of the washing tank 100, and a water-blocking plate 115 is installed at the bottom of the top cover 114. The water-blocking plate 115 is corrugated. The upper surface of the guide plate 110 is set as a concave arc surface.

[0039] The concave arc surface of the guide plate 110 facilitates the flow of water during the rotation of each conveying roller and directs impurities generated during washing to the filter plate 109; the filter plate 109 can be cleaned regularly to ensure the stable operation of the device.

[0040] In fact, a return flow arc plate 113 is installed below the guide plate 102, which can guide the water flow and better form a circulation between the washing area and the sedimentation area.

[0041] In this embodiment, as Figures 5-7 As shown, the tobacco cleaning structure 300 includes a hydraulic purging pipe 301, on which several rows of nozzles 303 are mounted in a circumferential array; one end of the hydraulic purging pipe 301 is provided with a water inlet 302, which is connected to a pressure pump through a water pipe; the other end of the hydraulic purging pipe 301 is closed, which can be achieved by installing a plug 304.

[0042] The drive chamber 112 contains a drive component that rotates the hydraulic purging pipe 301. The water-blocking plate 115 can block the water jet sprayed from the hydraulic purging pipe 301 and guide the water flow to be distributed more evenly on the upper surface of the tobacco leaves, so as to evenly distribute the moisture and prevent impurities from overflowing.

[0043] In fact, the inlet 302 can be connected to the water pipe via a rotary joint, achieving a rotating connection while ensuring water supply. For example... Figure 6 As shown, the driving component includes a drive wheel 305 installed at one end of the water jet 301 near the plug 304. A third drive belt 307 is alternately sleeved on the drive wheel 305 in a counterclockwise and clockwise direction. One of the drive wheels 305 is connected to a drive motor or electric motor, which drives the water jet 301. Additionally, an intermediate wheel 306 can be installed inside the washing tank 100 to support the third drive belt 307. The third drive belt 307, like the first drive belt 208 and the second drive belt 209, can be a belt or a V-belt, etc.

[0044] like Figure 8 As shown, in this embodiment, a PLC controller 500 is also included. The PLC controller 500 is electrically connected to a sensor group, which is used to monitor the washing parameters of the washing tank 100. The washing parameters include the water inflow, water temperature, and heating data. The PLC controller controls the water inflow, water outflow, and water temperature of the washing tank 100 according to the washing parameters, and controls the operation of the tobacco leaf conveying structure 200 and the tobacco leaf cleaning structure 300.

[0045] In fact, the sensor group includes water level detectors, temperature sensors, flow sensors, humidity sensors or moisture detectors, etc.

[0046] In practice, the PLC controller 500 can be a Siemens S7-1500. The PLC controller 500 dynamically adjusts the water pump frequency based on the liquid level in the washing tank 100 (e.g., the pump operates at 80Hz when the liquid level is <50%, and drops to 50Hz when the liquid level is ≥50%). A temperature preheating mode can be set: during non-production periods, the PLC controller 500 controls the steam valve to maintain the water temperature at 20℃ with a 30% opening, and raises the temperature to the set value (e.g., 35℃) one hour before production to reduce energy waste. It also acquires and records data, enabling traceability of process parameters. For example, the data recording function allows the PLC controller to record the washing parameters (temperature curve, total water flow, washing time) for each batch of tobacco leaves in its memory, supporting the export of Excel reports via HMI protocols (e.g., TP1500 Comfort, a touchscreen). Historical trend analysis: It plots the water flow fluctuation curve for the past 30 days, facilitating the optimization of valve control strategies (e.g., if daily water flow pressure fluctuations are detected at 10 AM, the pump's power frequency / variable frequency switching logic can be adjusted).

[0047] In this embodiment, the control flow of the PLC controller generally includes steps S501 to S509. The washing of tobacco leaves can be carried out in the washing tank 100. The design requirements are met during the washing process by controlling the water flow and temperature of the washing tank 100, and heating can be controlled as needed. After washing, dirt, sand, insect eggs, and pesticide residues are removed from the tobacco leaves. Washing reduces breakage during conveying, dehydration, and baking processes, ensures uniform moisture content, and improves the processing resistance of the tobacco leaves without affecting their quality. The washed tobacco leaves are then conveyed to existing dehydration drums and baking chambers via the discharge conveyor belt 400 for further processing. During dehydration, the tobacco leaves are immediately treated to a moisture content of approximately 16%, with no residual water on the surface. The tobacco leaves are then baked in the baking chamber. During baking, temperature and humidity are controlled, and moisture content can be detected. Baking ends once the moisture content meets the standards, resulting in baked tobacco leaves.

[0048] The above provides a detailed description of the tobacco washing device provided by this utility model. The specific embodiments are described only to aid in understanding the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A tobacco leaf washing device, comprising a washing tank (100), a tobacco leaf conveying structure (200), and a tobacco leaf cleaning structure (300), wherein one end of the washing tank (100) is provided with a feed inlet (101) and the other end is provided with a discharge outlet (105); characterized in that, The tobacco leaf conveying structure (200) includes end plates (201) and conveying rollers. Two end plates (201) are installed opposite each other in the middle of the two sides of the washing tank (100). A plurality of conveying rollers are arranged in a wave-like pattern along the length of the washing tank (100) between the two end plates (201). A sandwich layer (104) is provided on both sides of the washing tank (100). A drive assembly is installed in the sandwich layer (104). The drive assembly is used to drive all the conveying rollers to rotate in the same direction, conveying the tobacco leaves input through the feed port (101) to the discharge port (105), and washing the surface of the tobacco leaves through the conveying rollers. The tobacco leaf cleaning structure (300) is rotatably installed above each of the conveying rollers located at the trough of the wave. The tobacco leaf cleaning structure (300) washes the surface of the tobacco leaves passing below it.

2. The tobacco leaf washing device according to claim 1, characterized in that, A guide plate (102) is installed inside the feed inlet (101), and an arc-shaped surface (107) is provided on the upper surface of the guide plate (102), wherein the end face height of the arc-shaped surface (107) is higher than the lowest point of the arc-shaped surface (107).

3. The tobacco leaf washing device according to claim 1, characterized in that, The interlayer (104) is provided with at least a drive chamber (112) and a control chamber (111), and the drive assembly is installed in the drive chamber (112); the control chamber (111) is provided with a circulation pipeline and a heating pipe array; the circulation pipeline is connected to the washing tank (100) through a warm water circulation hole (108) opened at the bottom of the inner wall of the washing tank (100); the heating pipe array is connected to an external steam pipeline.

4. The tobacco leaf washing device according to claim 1, characterized in that, The middle area of ​​the washing tank (100) is set as the washing area, and the area below the middle of the washing tank (100) is set as the sedimentation area; the sedimentation area is equipped with a plurality of guide plates (110) that are inclined downward toward the feed inlet; there is a gap between the bottom of the guide plate (110) and the bottom wall of the washing tank (100), and a filter plate (109) is installed at the gap.

5. The tobacco leaf washing device according to claim 4, characterized in that, The top of the washing tank (100) is equipped with a top cover (114), and the bottom of the top cover (114) is equipped with a water-blocking plate (115), which is corrugated; the upper surface of the guide plate (110) is set as a concave arc surface.

6. The tobacco leaf washing device according to claim 1, characterized in that, The tobacco cleaning structure (300) includes a hydraulic purging pipe (301), on which a plurality of rows of nozzles (303) are arranged in a circumferential array; one end of the hydraulic purging pipe (301) is provided with a water inlet (302), which is connected to a pressure pump through a water pipe; the other end of the hydraulic purging pipe (301) is closed.

7. The tobacco leaf washing device according to claim 1, characterized in that, A discharge conveyor belt (400) is installed obliquely upward at the discharge port (105), and the bottom height of the discharge conveyor belt (400) is lower than the center height of the adjacent conveyor roller.

8. The tobacco leaf washing device according to claim 1, characterized in that, It also includes a PLC controller (500), which is electrically connected to a sensor group for monitoring the washing parameters of the washing tank (100), including the water inlet volume, water temperature and heating data; the PLC controller (500) controls the water inlet, water outlet and water temperature of the washing tank (100) according to the washing parameters; and controls the operation of the tobacco leaf conveying structure (200) and the tobacco leaf cleaning structure (300).

Images