Baking device for washing tobacco leaves

Abstract

The utility model belongs to the technical field of cigarette production equipment, and particularly relates to a baking device for washing tobacco leaves, which comprises a fixed frame, a dehydration structure and a conveying structure arranged on the fixed frame, a plurality of supporting wheels are arranged on the fixed frame at intervals, and the plurality of supporting wheels rotate together to support the dehydration structure; one end of the dehydration structure is in butt joint with the conveying structure, a baking chamber is arranged at the other end of the dehydration structure, and a butt joint structure is arranged between the dehydration structure and the baking chamber; a baking cylinder is rotatably mounted in the baking chamber, and a steam injection structure is mounted at the top of the baking chamber and used for conveying steam into the baking chamber; a discharging port is formed in the peripheral face of the baking barrel, and a door opening and closing structure used for controlling opening and closing of the discharging port is installed at the discharging port. According to the tobacco leaf baking device, excessive moisture of the washed tobacco leaves can be removed through the arranged dehydration structure, and the tobacco leaves are prevented from mildewing in the baking process.

Description

Technical Field

[0001] This utility model belongs to the technical field of cigarette production equipment, specifically relating to a drying device for water-washed tobacco leaves. Background Technology

[0002] In the cigarette manufacturing process, the purchased tobacco stacks are first loosened, and then the tobacco leaves are washed or rinsed. Following this, the tobacco is cured, processed (including destemming), rehydrated, flavored, and packaged. The process of rinsing tobacco leaves involves controlling the amount of water entering the plant, the water temperature, the dwell time, and the harvesting time. Washing the tobacco leaves removes dirt, sand, insect eggs, pesticide residues, etc.; it also reduces breakage, evens out moisture content, and improves the processing resistance of the tobacco leaves.

[0003] In practice, 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. Currently, with the existing water and steam supply, a soaking time of less than 10 minutes has minimal impact. However, the difficulty lies in immediately reducing the moisture content of the tobacco leaves to approximately 16% after washing, ensuring no residual water on the surface. This facilitates subsequent processing, prevents mold growth during curing, and guarantees the quality of the final product. Therefore, it is necessary to improve the curing apparatus for washing tobacco leaves. Utility Model Content

[0004] The purpose of this invention is to provide a drying apparatus for washing tobacco leaves 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 drying apparatus for washed tobacco leaves includes a fixed frame, a dehydration structure, and a conveying structure mounted on the fixed frame. Several support wheels are spaced apart on the fixed frame, and these wheels rotate together to support the dehydration structure. One end of the dehydration structure is connected to the conveying structure, and the other end of the dehydration structure is provided with a drying chamber. A connecting structure is provided between the dehydration structure and the drying chamber. A drying cylinder is rotatably mounted inside the drying chamber, and a steam injection structure is installed at the top of the drying chamber to supply steam into the drying chamber. A discharge port is opened on the outer circumference of the drying cylinder, and a door opening and closing structure is installed at the discharge port to control its opening and closing. An output end is installed at the bottom of the drying chamber to receive tobacco leaves falling from the discharge port. The dehydration structure dehydrates the washed tobacco leaves, controlling the moisture content within a suitable range, ensuring no residual water on the surface. Then, the connecting structure is operated, and the tobacco leaves are dried in the drying cylinder inside the drying chamber, preventing mold growth during the drying process and ensuring the quality of the final product.

[0007] Furthermore, the dehydration structure includes a dehydration outer cylinder and a dehydration cylinder installed inside the outer cylinder. The outer surface of the dehydration cylinder has dehydration holes. A water collection shell is installed on the fixed frame, and the water collection shell is connected to the outer cylinder and a drainage pipe. The outer cylinder and the dehydration cylinder have a tubular structure with a small opening at one end and a large opening at the other, with the smaller opening at the end closer to the conveying structure. A drive motor is installed on the mounting frame on one or more support wheels to drive the support wheels, thereby rotating the outer cylinder and the dehydration cylinder inside the outer cylinder to achieve dehydration.

[0008] Furthermore, the docking structure includes a docking shell fixed to the baking chamber near the dehydration outer cylinder. A rotating ring is rotatably installed between the docking shell and the dehydration outer cylinder. An installation ring is installed on the inner wall of the docking shell near the baking chamber. Three or more baffles are rotatably installed on the installation ring. A telescopic component is installed between the docking shell and the baffles. The telescopic component is used to control the baffles to close or open the port of the dehydration outer cylinder.

[0009] Furthermore, the telescopic component includes a telescopic rod installed between the docking shell and the baffle plate. The outer wall of the docking shell is provided with an air inlet, which is connected to the telescopic rod to pump air to the telescopic rod.

[0010] Furthermore, the opening and closing door structure includes an end plate, a control rod, and a door panel. The end plate is installed on the side of the baking cylinder near the output end, and the door panel is slidably installed on the discharge port. A servo motor is installed on the end plate, and the servo motor is connected to the door panel through the control rod to control the door panel to open and close the discharge port.

[0011] Furthermore, the steam injection structure includes a steam chamber installed on the inner wall of the top of the baking chamber and a gas inlet installed on the outer wall of the top of the baking chamber. The steam chamber has through holes arranged in an array on the side near the baking cylinder, and steam is injected into the baking cylinder through the gas inlet and the steam chamber from the through holes.

[0012] Furthermore, it also includes a PLC controller, which is electrically connected to a moisture detector and a temperature and humidity sensor. The moisture detector monitors the moisture content of the tobacco leaves in the dehydration structure and the curing chamber, while the temperature and humidity sensor monitors the temperature and humidity data within the curing chamber. The PLC controller controls the operation of the dehydration structure based on the moisture data, and controls the steam injection of the steam injection structure, as well as the heating, cooling, and drying processes within the curing chamber, based on the temperature and humidity data. The PLC controller can control the input of tobacco leaves via the conveying structure and, in conjunction with the moisture detector and temperature and humidity sensor, monitors and automates the dehydration structure and curing chamber, ultimately producing well-cured tobacco leaves.

[0013] The utility model adopting the above technical solution has the following advantages:

[0014] In this application, a conveying structure transports washed tobacco leaves to a dehydration structure, where the moisture content of the leaves is detected. The dehydration structure then dehydrates the washed tobacco leaves, controlling the moisture content to a suitable level, such as rapidly reducing it to approximately 16%, ensuring no residual water on the surface of the leaves. Afterwards, a docking structure is used to bake the tobacco leaves in the baking drum within the baking chamber, preventing mold growth during baking. This results in tobacco leaves that meet quality standards. A PLC controller automates the monitoring and control of the tobacco leaf conveying, dehydration, and baking processes, improving the consistency of tobacco leaf processing quality and energy efficiency. Attached Figure Description

[0015] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0016] Figure 1 This is a schematic diagram of an embodiment of a drying device for washing tobacco leaves according to the present invention;

[0017] Figure 2 This is a front view schematic diagram of an embodiment of a tobacco leaf drying device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the dehydration structure in an embodiment of the present invention;

[0019] Figure 4 This is a cross-sectional view of the dehydration structure in an embodiment of this utility model;

[0020] Figure 5 This is one of the structural schematic diagrams of the baking chamber in the embodiments of this utility model;

[0021] Figure 6 This is the second schematic diagram of the baking chamber in the embodiments of this utility model;

[0022] Figure 7 This is a cross-sectional structural diagram of the baking chamber in an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of another embodiment of the drying apparatus for washing tobacco leaves according to this utility model;

[0024] Figure 9 This is a schematic diagram of the control principle of the PLC controller in the embodiment of this utility model;

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

[0026] 101. Conveying structure; 102. Dehydration structure; 103. Steam jet structure; 104. Baking chamber; 105. Output end; 106. Docking structure; 107. Support wheel; 108. Fixed frame; 109. Water collection shell; 110. Dehydration outer cylinder; 111. Rotating ring; 112. Docking shell; 113. Air inlet; 114. Baffle plate; 115. Mounting ring; 116. Dehydration cylinder; 117. Bearing; 118. Baking cylinder; 119. End plate; 120. Control rod; 121. Drive wheel; 122. Steam chamber; 123. Transparent cover; 200. PLC controller; 201. Moisture detector. 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 7As shown, in one embodiment, a drying apparatus for washed tobacco leaves includes a fixed frame 108, a dehydration structure 102, and a conveying structure 101 mounted on the fixed frame 108. The conveying structure 101 includes a conveying motor and a conveyor belt. The conveyor belt is mounted on the fixed frame 108 via conveying rollers. The conveying motor is mounted on the fixed frame 108 and drives the conveyor belt to rotate, conveying the washed tobacco leaves to the dehydration structure 102. A plurality of support wheels 107 are spaced apart and mounted on the fixed frame 108. The plurality of support wheels 107 rotate together to support the dehydration structure 102. One end of the dehydration structure 102 is connected to the conveying structure 101, and the other end of the dehydration structure 102 is provided with a drying chamber 104. The dehydration structure 102 and the drying chamber 104 are connected to the conveying structure 101. A docking structure 106 is provided between the baking chambers 104; a baking cylinder 118 is rotatably installed inside the baking chamber 104; a steam injection structure 103 is installed on the top of the baking chamber 104, and the steam injection structure 103 is connected to the factory's steam pipeline for supplying steam into the baking chamber 104; a discharge port is opened on the outer circumference of the baking cylinder 118, and a door opening and closing structure for controlling the opening and closing of the discharge port is installed at the discharge port; an output end 105 for receiving tobacco leaves falling from the discharge port is installed at the bottom of the baking chamber 104; wherein, the output end 105 can be set as an inclined plate. Of course, in this embodiment, the output end 105 can also be set as the same structure as the conveying structure 101 as needed to realize material conveying during the tobacco processing. The washed tobacco leaves are conveyed to the dehydration structure 102 via the conveying structure 101. During the dehydration process, the moisture content of the tobacco leaves can be detected. If the moisture content does not meet the target requirements, the tobacco leaves continue to be dehydrated via the dehydration structure 102, quickly reducing the moisture content to approximately 16% to ensure no residual water remains on the surface of the leaves. Then, the docking structure 106 is operated to open the port of the dehydration structure 102, allowing the tobacco leaves to enter the curing chamber 104. The tobacco leaves are then cured in the curing cylinder 118 within the curing chamber 104 to prevent mold growth. Inside the curing chamber 104, steam can be added as needed via the steam injection structure 103 to regulate the moisture and temperature, facilitating the curing of the tobacco leaves.

[0029] In this embodiment, the dehydration structure 102 includes a dehydration outer cylinder 110 and a dehydration cylinder 116 installed inside the dehydration outer cylinder 110. The outer surface of the dehydration cylinder 116 is provided with dehydration holes. A water collection shell 109 is installed on the fixed frame 108. The water collection shell 109 is connected to the dehydration outer cylinder 110 and is also connected to a drainage pipe. The water separated from the washed tobacco leaves is collected from the dehydration holes into the water collection shell 109 and then discharged through the drainage pipe.

[0030] In this embodiment, the dehydration outer cylinder 110 and dehydration cylinder 116 are conical and funnel-shaped. The dehydration cylinder 116 is open at one end of the conveyor belt, directly receiving the tobacco leaves. Then, during rotation, the tobacco leaves move back to one end of the docking structure 106 under the action of centrifugal force, and dehydration is achieved during the movement. The docking structure 106 includes a docking shell 112 fixed to the side of the baking chamber 104 near the dehydration outer cylinder 110. A rotating ring 111 is rotatably installed between the docking shell 112 and the dehydration outer cylinder 110. The rotating ring 111 and the dehydration outer cylinder 110 are spaced apart, or a bearing 117 is installed between the rotating ring 111 and the dehydration outer cylinder 110 to assist in supporting and limiting the rotation of the dehydration outer cylinder 110. An installation ring 115 is installed on the inner wall of the docking shell 112 near the baking chamber 104. Three baffles 114 are rotatably mounted on the installation ring 115. The rotatable mounting of the baffles 114 can be achieved by hinges or universal joints. A telescopic component is installed between the docking shell 112 and the baffles 114. The telescopic component is used to control the closing or opening of the port of the dehydration outer cylinder 110 by the baffles 114. The telescopic component includes a telescopic rod installed between the docking shell 112 and the baffles 114. An air inlet 113 is provided on the outer wall of the docking shell 112. The air inlet 113 is connected to the telescopic rod to pump air to the telescopic rod. Specifically, an air pump can be installed on the air inlet 113 to realize the pumping of high-pressure gas.

[0031] In fact, the baffle 114 in this embodiment can also be set to four or five as needed. The function of the baffle 114 is to close the port of the dehydration outer cylinder 110 in the dehydration chamber, and to open the port of the dehydration outer cylinder 110 after dehydration is completed so that the tobacco leaves can be transported to the baking cylinder 118; and, the baking cylinder 118 is also closed when the tobacco leaves are being baked.

[0032] In fact, such as Figure 8 As shown, the outer dewatering cylinder 110 can adopt the same structure as the dewatering cylinder 116. A transparent cover 123 can be installed on the fixed frame 108, and the transparent cover 123 is fitted around the outside of the dewatering structure 102, thus sealing the dewatering structure 102. This achieves the dewatering of the washed tobacco leaves.

[0033] In this embodiment, the top of the baking chamber 104 is semi-circular; both ends of the baking cylinder 118 are mounted on the baking chamber 104 via bearings 117. One end of the baking cylinder 118 near the docking structure 106 is set as an opening (or port), and the other end is an end plate 119 with an opening and a door opening structure. The steam injection structure 103 includes a steam chamber 122 mounted on the inner wall of the top of the baking chamber 104, and a gas inlet mounted on the outer wall of the top of the baking chamber 104. The steam chamber 122 has through holes arrayed on the side near the baking cylinder 118, and steam is injected into the baking cylinder 118 through the gas inlet and the steam chamber 122 via the through holes.

[0034] In fact, just like the support wheel 107, a drive wheel 121 can be installed on the wall of the baking chamber 104. The drive wheel 121 abuts against the outer wall of the end of the baking cylinder 118 to drive the rotation of the baking cylinder 118.

[0035] In fact, through holes can also be provided on the end plate 119, and a mounting bracket can be installed on the end plate 119 for installing the door opening and closing structure.

[0036] In this embodiment, the door opening and closing structure includes an end plate 119, a control rod 120, and a door panel. The end plate 119 is installed on the side of the baking cylinder 118 near the output end 105. The door panel is slidably installed at the discharge port. A servo motor is installed on the end plate 119. The servo motor is connected to the door panel through the control rod 120 and is used to control the door panel to open and close the discharge port.

[0037] In this embodiment, as Figure 9 As shown, it also includes a PLC controller 200, which is electrically connected to a moisture detector 201 and a temperature and humidity sensor. The moisture detector 201 is used to monitor the moisture data of the tobacco leaves in the dehydration structure 102 and the baking chamber 104, and the temperature and humidity sensor is used to monitor the temperature and humidity data in the baking chamber 104. The PLC controller 200 controls the operation of the dehydration structure 102 according to the moisture data, and controls the steam injection of the steam injection structure 103, the heating, cooling and drying in the baking chamber 104 according to the temperature and humidity data.

[0038] The washing of tobacco leaves can be carried out in a pre-designed water tank. By controlling the water flow and temperature, the washing process removes dirt, sand, insect eggs, pesticide residues, etc., from the tobacco leaves. It also reduces breakage, evens out moisture content, and improves the processing resistance of the tobacco leaves without affecting their quality. The water tank can also be heated to prevent the water temperature from affecting the washing effect. The washed tobacco leaves are then conveyed to the dehydration structure 102 via a conveyor structure 101. During dehydration, the tobacco leaves are immediately reduced to approximately 16% moisture content, with no residual water on the surface. The leaves are then dried in the drying chamber 104. During the drying process, steam is supplemented through a steam injection structure 103 to control and regulate the room temperature, primarily for drying and humidity control. Moisture content is then measured, and once the moisture content meets the standard, the leaves are output through the output terminal 105. Precise detection and control of the tobacco leaf moisture content prevents mold growth during drying and ensures optimal quality of the final product.

[0039] The above provides a detailed description of a drying apparatus for water-washed tobacco leaves 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 drying apparatus for washed tobacco leaves, comprising a fixed frame, a dehydration structure, and a conveying structure mounted on the fixed frame; characterized in that, A number of support wheels are spaced apart and installed on the fixed frame, and the support wheels rotate together to support the dehydration structure; one end of the dehydration structure is connected to the conveying structure, and the other end of the dehydration structure is provided with a baking chamber, and a docking structure is provided between the dehydration structure and the baking chamber; a baking cylinder is rotatably installed inside the baking chamber, and a steam injection structure is installed on the top of the baking chamber for supplying steam into the baking chamber; a discharge port is opened on the outer circumference of the baking cylinder, and a door opening and closing structure is installed at the discharge port for controlling the opening and closing of the discharge port; an output end is installed at the bottom of the baking chamber for receiving tobacco leaves falling from the discharge port.

2. The drying apparatus for water-washed tobacco leaves according to claim 1, characterized in that, The dehydration structure includes a dehydration outer cylinder and a dehydration cylinder installed inside the dehydration outer cylinder. The outer surface of the dehydration cylinder is provided with dehydration holes. A water collection shell is installed on the fixed frame. The water collection shell is connected to the dehydration outer cylinder and is also connected to a drainage pipe.

3. The drying apparatus for water-washed tobacco leaves according to claim 2, characterized in that, The docking structure includes a docking shell fixed to the baking chamber near the dehydration outer cylinder. A rotating ring is rotatably installed between the docking shell and the dehydration outer cylinder. An installation ring is installed on the inner wall of the docking shell near the baking chamber. Three or more baffles are rotatably installed on the installation ring. A telescopic component is installed between the docking shell and the baffles. The telescopic component is used to control the baffles to close or open the port of the dehydration outer cylinder.

4. The drying apparatus for water-washed tobacco leaves according to claim 3, characterized in that, The telescopic component includes a telescopic rod installed between the docking shell and the baffle plate. The outer wall of the docking shell is provided with an air inlet, which is connected to the telescopic rod to pump air to the telescopic rod.

5. The drying apparatus for water-washed tobacco leaves according to claim 1, characterized in that, The opening and closing door structure includes an end plate, a control rod, and a door panel. The end plate is installed on the side of the baking cylinder near the output end, and the door panel is slidably installed on the discharge port. A servo motor is installed on the end plate, and the servo motor is connected to the door panel through the control rod to control the door panel to open and close the discharge port.

6. The drying apparatus for water-washed tobacco leaves according to claim 1, characterized in that, The steam injection structure includes a steam chamber installed on the inner wall of the top of the baking chamber and a gas inlet installed on the outer wall of the top of the baking chamber. The steam chamber has through holes arranged on the side near the baking cylinder, and steam is injected into the baking cylinder through the gas inlet and the steam chamber from the through holes.

7. The drying apparatus for water-washed tobacco leaves according to claim 1, characterized in that, It also includes a PLC controller, which is electrically connected to a moisture detector and a temperature and humidity sensor. The moisture detector is used to monitor the moisture data of the tobacco leaves in the dehydration structure and the baking chamber, and the temperature and humidity sensor is used to monitor the temperature and humidity data in the baking chamber. The PLC controller controls the operation of the dehydration structure according to the moisture data, and controls the steam injection of the steam injection structure, the heating, cooling and drying in the baking chamber according to the temperature and humidity data.

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