Tobacco leaf cold conditioning machine

Abstract

The utility model relates to tobacco technical field, concretely is a kind of tobacco cold moisture regaining machine, comprising: water tank, air storehouse, cover are sequentially communicated from bottom to top, water tank is equipped with water replenishing valve, circulating pump, thermostatic heater, air storehouse front wall is equipped with air regulating grid, connecting seat, air regulating grid is equipped with exhaust fan in, air storehouse lateral wall is equipped with air inlet through groove, air storehouse upper end and lower end are equipped with upper water tank, lower water tank respectively, lower water tank content is equipped with water screen, water tank and circulating pump drain, water screen upper end are connected, cover is equipped on upper water tank.The utility model relates to a kind of tobacco cold moisture regaining machine, automatically water replenishing, heating, and realize heat and humidity exchange;Small footprint, easy to move, low energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of tobacco technology, specifically to a tobacco leaf cold rehumidification machine. Background Technology After re-drying, storage, and aging, tobacco leaves become dry and brittle. If they are directly subjected to subsequent shredding and rolling processes, the leaves are prone to breakage, resulting in raw material waste. Furthermore, the fragile tobacco leaves cannot be properly shredded, affecting the tobacco structure and filling value, thus failing to meet the physical property requirements of subsequent equipment. Re-moistening the tobacco leaves transforms them from brittle to tough. By regulating temperature and humidity, it helps the tobacco leaves expand, improving sensory quality and providing raw materials with the required moisture content and temperature for the shredding and drying processes.

[0002] The tobacco leaf rehumidifier is a key piece of equipment in the tobacco processing production line. Its main function is to accurately and uniformly increase the moisture content and temperature of tobacco leaves, tobacco sheets, and tobacco stems to meet the requirements of subsequent processing techniques.

[0003] Currently, conventional rehumidifiers are classified according to their working principle as follows: A vacuum rehumidifier first creates a high vacuum in a sealed cylinder containing tobacco leaves. At this point, the air and moisture between the cells inside the tobacco leaves are extracted, making the leaves fluffy. Then, high-pressure steam is injected into the cylinder. Because the cylinder is under negative pressure, the steam can quickly and evenly penetrate into every corner and internal cell of the tobacco leaves, achieving rapid and thorough humidification and heating. However, it can only operate in batches, not continuously, and has relatively low efficiency and high energy consumption.

[0004] The drum-type rehumidifier, based on convection heat transfer and contact heat transfer, sprays a mixture of steam, water and air into the rotating drum, thereby exchanging heat and moisture with the tobacco leaves that are constantly being lifted and scattered inside the drum; however, its rehumidification is poor in terms of thoroughness and uniformity, and the tobacco leaves may be damaged during the rotation process.

[0005] Tunnel-type / mesh belt-type rehumidifiers use multiple nozzles at the top and bottom to spray steam and a mixture of air and water to humidify and heat the tobacco leaves laid flat on the mesh belt inside the tunnel. However, due to their large surface area and the presence of heat and moisture stratification in the process environment, it is difficult to ensure uniformity.

[0006] However, conventional dehumidifiers still have the following shortcomings: 1. The equipment needs to be manually monitored and the moisture return parameters adjusted; 2. Large footprint, multiple energy sources, and high energy consumption. Utility Model Content

[0007] In order to solve the technical problems existing in the background art, this utility model provides a tobacco leaf cold rehumidification machine that automatically replenishes water, heats, and realizes heat and moisture exchange; it has a small footprint, is easy to move, and has low energy consumption.

[0008] The technical solution adopted by this utility model is: A tobacco leaf cold rehumidification machine, comprising: A water tank, a ventilation chamber, and a cover are connected sequentially from bottom to top. The water tank contains a water supply valve, a circulating pump, and a constant temperature heater. The front wall of the ventilation chamber is equipped with an air regulating grille and a connecting seat. An exhaust fan is installed inside the air regulating grille. An air inlet slot is provided through the side wall of the ventilation chamber. An upper water trough and a lower water trough are respectively provided at the upper and lower ends of the ventilation chamber. The lower water trough contains a water curtain. The water trough is connected to the drain outlet of the circulating pump and the upper end of the water curtain. The cover is placed on the upper water trough.

[0009] Furthermore, a water level display window is provided on the front side wall of the water tank to observe the water level in the tank, and casters are provided at the four corners of the lower end of the water tank to move it in the smoke room.

[0010] Furthermore, the water supply valve is used to control the water level in the water tank.

[0011] Furthermore, the inlet of the circulating pump is positioned downwards on the side wall of the water tank.

[0012] Furthermore, the constant temperature heater is located in the center of the water tank.

[0013] Furthermore, the connecting seat is located directly below the air conditioning grille.

[0014] Furthermore, the connector is provided with a connecting port that communicates with the water supply valve, and a lead wire that is electrically connected to the circulating pump and the exhaust fan.

[0015] Furthermore, the air inlet channel is provided with multiple layers arranged side by side in the vertical direction, and a filter plate is provided inside the air inlet channel.

[0016] Furthermore, the drain trough is configured as a symmetrical "U" shape along the left and right directions, with its left and right sides located below the air inlet trough, and a return water trough extending towards the water tank is provided in the middle of the drain trough.

[0017] Furthermore, drainage channels are provided on the left and right sides of the upper water tank, located at the upper end of the water curtain 26.

[0018] The beneficial effects of this utility model of a tobacco leaf cold rehumidification machine are as follows: 1. Automatic water replenishment is achieved through a water supply valve, the process temperature is maintained by a constant temperature heater, and moisture-containing air is discharged through an exhaust fan; 2. It is easy to move with casters and can be connected to water supply or mains power via the connector. It is simple and convenient to operate. 3. Water is injected into the upper water tank by a circulation pump, and the water in the upper water tank is automatically and evenly distributed to the water curtain. The water curtain increases the moisture content of the exhaust air, and the water flowing through the water curtain in the upper water tank is returned to the water tank through the lower water tank. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of an embodiment of this utility model; Figure 2 This is a rear view schematic diagram of an embodiment of this utility model; Figure 3 This is a side view of an embodiment of this utility model; Figure 4 This is a side perspective view of an example of this utility model.

[0020] In the picture: 10. Water tank; 11. Water level display window; 12. Casters; 13. Water supply valve; 14. Circulation pump; 15. Thermostatic heater. 20. Air chamber; 21. Air regulating grille; 22. Connecting seat; 23. Exhaust fan; 24. Air inlet duct; 25. Drain trough. 26. Water curtain; 27. Upper water tank. 30. Cover. Detailed Implementation

[0021] To more clearly and explicitly illustrate the specific implementation objectives and methods of this utility model, the technical solution of this utility model will be fully described below. The described embodiments are only some embodiments of this utility model, not all embodiments. Without creative effort, all other embodiments based on the described embodiments of this utility model are within the protection scope of this utility model.

[0022] This utility model relates to a tobacco leaf cold rehumidification machine, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it includes: A water tank 10 is placed on the floor of the tobacco room. The water tank 10 has an opening at the top and a water level display window 11 on the front side wall of the water tank 10 for observing the water level inside the water tank 10. Universal wheels 12 are installed at the four corners of the bottom of the water tank 10 for moving inside the tobacco room. The water tank 10 is equipped with a water supply valve 13, a circulation pump 14, and a constant temperature heater 15. The water supply valve 13 is used to control the water level inside the water tank 10. The inlet of the circulation pump 14 is set downward on the side wall of the water tank 10, and the constant temperature heater 15 is set in the center of the water tank 10.

[0023] A wind chamber 20 is provided at the upper opening of the water tank 10. The wind chamber 20 is arranged through the vertical direction. An air regulating grille 21 is provided on the front side wall of the wind chamber 20. A connecting seat 22 is provided on the side wall of the wind chamber 20 below the air regulating grille 21. An exhaust fan 23 is provided inside the air regulating grille 21. A connecting pipe port connected to the water supply valve 13 and a lead wire electrically connected to the circulating pump 14 and the exhaust fan 23 are provided on the connecting seat 22. Air inlet slots 24 are respectively provided through the left and right side walls of the wind chamber 20. Multiple layers of air inlet slots 24 are arranged in parallel along the vertical direction. A filter plate is provided inside the air inlet slots 24. A water trough 25 is provided at the lower opening of the air chamber 20. The water trough 25 is designed as a symmetrical "U" shape along the left and right directions. Its left and right sides are respectively located below the air inlet channel 24. A return water trough extending to the water tank 10 is provided in the middle of the water trough 25. A water curtain 26 located at the air inlet channel 24 is provided inside the water trough 25. A water tank 27 is provided at the upper opening of the air chamber 20. The water tank 27 is connected to the drain outlet of the circulating pump 14. Drainage channels are provided on the left and right sides of the water tank 27. The drainage channels are located at the upper end of the water curtain 26. The upper cover of the water tank 27 is provided with a cover 30.

[0024] Based on the specific structure of a tobacco leaf cold rehumidification machine in the above embodiments, its working process is described below: A. Before starting the equipment: Connect the tap water to the connection pipe port of the connector 22 and plug the lead wire into the mains power; the water supply valve 13 will open automatically, and tap water will be supplied to the water tank 10 from the connection pipe port of the connector 22 until the water level reaches the normal working range, and the water supply valve will close automatically. After confirming that the water level is normal, cover the upper water tank 27 with the cap 30 to prevent water evaporation and foreign objects from entering.

[0025] B. After startup: The constant temperature heater 15 is started to heat the water in the water tank 10 and stabilize the water temperature at 40-50℃ to ensure that the temperature and humidity of the air meet the requirements of tobacco leaf treatment during the subsequent cold rehumidification process. The circulating pump 14 starts working, pressurizes the water in the water tank 10 and delivers it to the upper water tank 27. The water flows evenly to the upper end of the water curtain 26 through the drainage channels on the left and right sides of the upper water tank 27. Under the action of gravity, it seeps downward along the surface of the water curtain 26 to form a uniform water film. The exhaust fan 23 starts, drawing in air from the outside through the air inlet duct 24. Before entering the air chamber 20, the air is filtered by a filter plate inside the air inlet duct 24 to remove dust and impurities, preventing contamination of the tobacco leaves. When the filtered air flows through the water curtain 26, it comes into full contact with the water film on the surface of the water curtain 26, increasing the humidity in the air. The air conditioning grille 21 can be adjusted according to actual needs. By changing the angle of the grille, the direction and volume of airflow can be controlled to adapt to the distribution of tobacco leaves in different tobacco rooms. During the heat and moisture exchange between the air and the water curtain 26, the excess water that is not evaporated falls into the water tank 25 and flows back to the water tank 10 through the return water tank in the middle of the water tank 25, thereby realizing the recycling of water resources and reducing the waste of water resources. The treated hot and cold air, under the action of exhaust fan 23, is blown out from the front end of air chamber 20 through air regulating grille 21 and blown towards the tobacco leaves in the tobacco room to perform cold rehumidification treatment on the tobacco leaves.

[0026] During equipment operation: the water supply valve 13 automatically opens and closes to replenish water to the water tank 10. The water level in the water tank 10 is manually monitored through the water level display window 11 to ensure continuous and stable operation of the equipment. The casters 12 at the bottom of the water tank 10 facilitate the movement of the equipment in the tobacco barn, and the working position of the equipment can be flexibly adjusted according to the stacking position of the tobacco leaves, improving the ease of use of the equipment. After the cold re-moistening treatment of the tobacco leaves is completed, the power supply of the equipment is turned off. After the equipment stops running, the tap water and the mains power of the lead wire at the connection port on the connection seat 22 are disconnected. The water in the water tank 10 is replaced as needed to maintain water quality and ensure the treatment effect for the next use.

[0027] In summary, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification. All equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A tobacco leaf cold rehumidification machine, characterized in that: include: The water tank (10), air chamber (20), and cover (30) are connected sequentially from bottom to top. The water tank (10) is equipped with a water supply valve (13), a circulation pump (14), and a constant temperature heater (15). The front wall of the air chamber (20) is provided with an air regulating grille (21) and a connecting seat (22). An exhaust fan (23) is provided inside the air regulating grille (21). An air inlet slot (24) is provided through the side wall of the air chamber (20). An upper water tank (27) and a lower water tank (25) are provided at the upper and lower ends of the air chamber (20), respectively. A water curtain (26) is provided inside the lower water tank (25). The water tank (27) is connected to the drain outlet of the circulating pump (14) and the upper end of the water curtain (26). A cover (30) is placed on the upper water tank (27).

2. The tobacco leaf cold rehumidification machine according to claim 1, characterized in that: The water tank (10) is provided with a water level display window (11) on the front side wall for observing the water level in the water tank (10). The water tank (10) is provided with casters (12) at the four corners of the lower end for moving in the smoke room.

3. A tobacco leaf cold rehumidification machine according to claim 1 or 2, characterized in that: The water supply valve (13) is used to control the water level in the water tank (10).

4. A tobacco leaf cold rehumidification machine according to claim 1 or 2, characterized in that: The inlet of the circulating pump (14) is located downward on the side wall of the water tank (10).

5. A tobacco leaf cold rehumidification machine according to claim 1 or 2, characterized in that: The constant temperature heater (15) is located in the center of the water tank (10).

6. A tobacco leaf cold rehumidification machine according to claim 1, characterized in that: The connecting seat (22) is located directly below the air conditioning grille (21).

7. A tobacco leaf cold rehumidification machine according to claim 1 or 6, characterized in that: The connecting seat (22) is provided with a connecting pipe port that communicates with the water supply valve (13) and a lead wire that is electrically connected to the circulating pump (14) and the exhaust fan (23).

8. A tobacco leaf cold rehumidification machine according to claim 7, characterized in that: The air inlet channel (24) is arranged in multiple layers in the vertical direction, and a filter plate is provided inside the air inlet channel (24).

9. A tobacco leaf cold rehumidification machine according to claim 8, characterized in that: The drain trough (25) is configured as a symmetrical "U" shape along the left and right directions, with its left and right sides located below the air inlet trough (24) respectively. A return water trough extending towards the water tank (10) is provided in the middle of the drain trough (25).

10. A tobacco leaf cold rehumidification machine according to claim 1, characterized in that: The upper water tank (27) has drainage channels on the left and right sides located at the upper end of the water curtain (26).

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