Tobacco leaf flue-curing monitoring device based on box type flue-curing process
By designing a tobacco leaf monitoring device in the box-type curing process, and using a camera and cage structure to observe the tobacco leaf status in real time, the problem of uneven temperature and humidity and complex curing caused by high tobacco leaf density is solved, and the accuracy and efficiency of process parameter adjustment are improved.
Patent Information
- Application Number
- CN202520698396.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-04-14
AI Technical Summary
In existing box-type curing processes, the high density of tobacco leaves leads to uneven temperature and humidity in the curing room, complex curing processes, and difficulty in rehydration. There is also a lack of equipment to directly observe the state of tobacco leaves during curing.
Design a tobacco leaf curing monitoring device, including a camera and a rack installed inside the oven. The device is positioned using pins, and the camera can be used to observe the tobacco leaf status in real time. It is fixed by a limiting plate and a limiting spring to reduce the impact on the tobacco leaf.
It enables real-time observation of the state of tobacco leaves during curing, guides the adjustment of process parameters, and improves the control precision and efficiency of the curing process.
Smart Images
Figure CN223886202U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of flue-cured tobacco technology, and in particular relates to a monitoring device for tobacco leaves during curing based on a box-type curing process. Background Technology
[0002] The box-type tobacco curing process is a newly emerging method of tobacco curing in recent years. Compared with the traditional hanging rod and tobacco clamping curing, it adopts a more efficient and faster assembly line loading and mechanized operation mode: after the tobacco leaves are sorted, they are loaded into tobacco boxes made of metal mesh and frame by conveyor belt, and then transported by forklift to the specially designed and modified curing room. The whole process is smooth and saves time and labor.
[0003] However, the current curing process for box-type tobacco is still in the exploratory and improvement stage. In particular, the amount of fresh tobacco in each box is as high as several hundred kilograms, resulting in a high density of tobacco leaves. This leads to a series of problems, such as incomplete supporting equipment (uneven temperature and humidity in the curing room), complex curing process (difficult to control process parameters), and difficulty in rehydration. In particular, the existing three-stage curing process determines the adjustment of process parameters based on changes in the state of the tobacco leaves (yellowing, color fixing, and drying). Therefore, it is necessary to design a device that can directly visually observe the changes in the state of the tobacco leaves inside the oven to adjust and test the corresponding process parameters (heating, ventilation, dehumidification, etc.). Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a tobacco leaf roasting monitoring device based on a box-type roasting process. This invention is designed with the oven structure in mind, featuring a simple overall shape and positioning via pins inserted when loading tobacco into the oven. While minimizing adverse effects on tobacco leaf roasting, it enables real-time observation of the actual state of the roasting tobacco leaves, thereby guiding the testing and adjustment of process parameters.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] A monitoring device for tobacco leaves during roasting based on a box-type roasting process includes a camera installed inside the oven and a cage frame. The cage frame includes an installation compartment for mounting the camera and an isolation compartment that is close to and separates the tobacco leaves to provide a camera space.
[0007] The installation chamber is closed at the end away from the tobacco leaves and is integrally provided with two ear plates. The two ear plates are provided with positioning holes, and the two positioning holes are respectively set to correspond to two adjacent pin holes preset on the oven door.
[0008] Preferably, the device further includes two limiting plates, each with a limiting hole for the insertion pin to pass through, and two ends of a limiting spring fixed to the outer peripheral sidewall of the limiting hole and the outer peripheral sidewall of the positioning hole, respectively.
[0009] Preferably, the isolation chamber is hollow and open at both ends along the pin axis in the shape of a truncated pyramid or a frustum. The small open end of the isolation chamber is detachably connected to the open end of the installation chamber facing the tobacco leaf and used to expose the camera lens.
[0010] The inner wall of the large open end of the isolation chamber is equipped with crossbars to prevent tobacco leaves from entering.
[0011] Preferably, the sidewalls of the isolation chamber and the installation chamber are composed of a mesh grid, and the inner diameter of the mesh of the mesh grid is larger than the outer diameter of the pin.
[0012] Preferably, the two opposite inner walls of the small-area open end of the isolation compartment are provided with opposing extending baffles; the two opposite inner walls of the open end of the installation compartment are provided with opposing extending partitions.
[0013] When the isolation compartment and the installation compartment are connected, the partition bar and the stop bar are perpendicular, and both ends of the partition bar and the two ends of the stop bar are provided with coaxial threaded holes at the overlapping point. The two coaxial threaded holes are sequentially screwed into flat-head bolts.
[0014] The working process of this utility model is as follows:
[0015] First, tilt the camera and move it over the partition of the mounting compartment before entering the compartment. Then, lay the camera flat and use the partition to support the camera housing, keeping the lens facing outwards. Pass the camera's cable through the mesh of the mounting compartment and leave it outside. Next, connect the isolation compartment and the mounting compartment: align the small port of the isolation compartment with the open end of the mounting compartment, and use multiple flat-head bolts to screw into the threaded holes of the corresponding partition and retaining strips.
[0016] After loading the tobacco leaves into the oven, first connect this invention to the oven door:
[0017] Before closing the box door, first insert the tips of the two pins sequentially through the pin holes on the box door, as well as the upper limit hole, the limit spring, and the positioning hole on the ear plate. Then, flip the box door over, pressing the pins and the utility model together onto the tobacco leaves. Then, press the pins down, and the pin tips continue to move downwards, penetrating the corresponding mesh and piercing into the tobacco leaves to fix the tobacco leaves and the utility model. At the same time, insert pins in other parts (pin insertion is a conventional operation in the prior art, aimed at fixing the tobacco leaves to prevent them from collapsing and being stacked after dehydration). Simultaneously, the presence of the limit spring allows the utility model to maintain a continuous, close, and pressed state against the box door, thus effectively monitoring the tobacco leaves.
[0018] After multiple ovens are placed into the curing room, the wires of all cameras are connected to the pre-installed wiring on the inner wall of the curing room. The cameras transmit video signals to external visual devices, allowing staff to observe the changes in the state of the tobacco leaves during curing in real time.
[0019] Compared with the prior art, the present invention has the following advantages: The present invention is designed for the structure of the oven, with a simple overall shape and can be positioned and installed by the pins when loading tobacco into the oven. Under the premise of minimizing the adverse effects on the tobacco leaves during baking, it enables real-time observation of the actual state of the tobacco leaves during baking, thereby guiding the experimentation and adjustment of process parameters. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the monitoring device described in a specific embodiment;
[0021] Figure 2 This is a schematic diagram of the monitoring device described in the specific embodiment, viewed from the lens of the camera.
[0022] Figure 3 This is a schematic diagram showing the installation status of the monitoring device inside the oven in a specific embodiment. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0024] like Figure 1-3 As shown, a tobacco leaf roasting monitoring device based on box-type roasting process includes a camera 4 installed inside the oven 1 and a cage frame. The cage frame includes an installation compartment 1 for mounting the camera 4 and an isolation compartment 2 that is close to and separates the tobacco leaves to provide a camera space.
[0025] Both the installation chamber 1 and the isolation chamber 2 are made of integrally bent mesh panels, and the inner diameter of the mesh 3 of the mesh panel is larger than the outer diameter of the pin 73.
[0026] In this embodiment, the camera 4 uses a square outer shell structure, and the corresponding mounting chamber 1 is a rectangular frame structure with one open end. The isolation chamber 2 is a hollow, frustum-shaped frame structure with open ends. The two opposite inner walls of the small open end of the isolation chamber 2 are provided with opposing extending baffles 21; the two opposite inner walls of the open end of the mounting chamber 1 are provided with opposing extending partitions 16. When the isolation chamber 2 and the mounting chamber 1 are connected, the partitions 16 and baffles 21 are perpendicular, and both ends of the partitions 16 and the baffles 21 have coaxially arranged threaded holes 5 at their overlapping points. The two coaxial threaded holes 5 are sequentially screwed into flat-head bolts. The inner wall of the large open end of the isolation chamber 2 is provided with crossbars 22 to prevent tobacco leaves from entering.
[0027] The installation chamber 1 is closed at the end away from the tobacco leaves and is integrally provided with two ear plates 11. Positioning holes 12 are provided on the two ear plates 11, and the two positioning holes 12 are respectively configured to correspond to two adjacent pin holes 72 pre-set on the oven door 71. The device also includes two limiting plates 13, each with a limiting hole 14 for the pin 73 to pass through. Limiting springs 15 are fixed at both ends to the outer peripheral sidewalls of the limiting hole 14 and the positioning hole 12, respectively. (Note: ...) Figure 1 The image shows a limiting spring and ear plate in a separated state only to fully expose the position of the positioning hole for ease of understanding; in reality, the limiting spring and the corresponding ear plate should be in a fixed connection state.
[0028] The working process of this utility model is as follows:
[0029] First, tilt the camera 4 and place it inside the mounting chamber 1, passing it over the partition 16. Then, lay the camera 4 flat and use the partition 16 to support the camera housing, keeping the lens facing outwards. Pass the camera's wire 6 through the mesh of the mounting chamber 1 and leave it outside. Next, connect the isolation chamber 2 to the mounting chamber 1: align the small-area port of the isolation chamber 2 with the open end of the mounting chamber 1, and use multiple flat-head bolts to screw them into the threaded holes 5 of the corresponding partitions and stops.
[0030] After loading the tobacco leaves into the oven, first connect this invention to the oven door:
[0031] Before closing the box door 71, first insert the tips of the two pins 73 sequentially through the pin holes 72 on the box door and the corresponding upper limit hole 14, limit spring 15, and positioning hole 12 on the ear plate 11. Then, flip the box door 71, press the pins and the utility model together onto the tobacco leaf, and then press down the pins (such as...). Figure 3 As shown), the needle tip continues to move downwards and penetrates the corresponding mesh before piercing the tobacco leaf, thus securing the tobacco leaf and the present invention. Simultaneously, needles are inserted in other locations (needle insertion is a standard practice in the prior art, designed to secure the tobacco leaf and prevent it from collapsing and being crushed after dehydration). The presence of a limiting spring allows the present invention to maintain a continuous, pressed state against the tobacco leaf relative to the box door, thereby effectively enabling real-time observation of the tobacco leaf.
[0032] After multiple ovens are placed into the curing room, the wires 6 of all cameras are connected to the pre-installed wiring on the inner wall of the curing room. The cameras transmit video signals to external visual devices, allowing staff to observe the changes in the state of the tobacco leaves during curing in real time.
Claims
1. A tobacco leaf roasting monitoring device based on a box-type roasting process, comprising a camera and a rack installed inside the oven, characterized in that, The cage includes an installation compartment for mounting the camera and an isolation compartment that is attached to and separated from the tobacco leaves to provide a camera space. The installation chamber is closed at the end away from the tobacco leaves and is integrally provided with two ear plates. The two ear plates are provided with positioning holes, and the two positioning holes are respectively set to correspond to two adjacent pin holes preset on the oven door.
2. The tobacco leaf curing monitoring device based on box-type curing process as described in claim 1, characterized in that, The device also includes two limiting plates, each with a limiting hole for the insertion pin to pass through, and two ends of the limiting spring are respectively fixed to the outer peripheral sidewall of the limiting hole and the outer peripheral sidewall of the positioning hole.
3. The tobacco leaf curing monitoring device based on box-type curing process as described in claim 2, characterized in that, The isolation chamber is hollow and open at both ends along the pin axis, in the shape of a truncated pyramid or a frustum. The small open end of the isolation chamber is detachably connected to the open end of the installation chamber facing the tobacco leaf and used to expose the camera lens. The inner wall of the large open end of the isolation chamber is equipped with crossbars to prevent tobacco leaves from entering.
4. The tobacco leaf curing monitoring device based on box-type curing process as described in claim 3, characterized in that, The side walls of the isolation chamber and the installation chamber are composed of mesh grids, and the inner diameter of the mesh grids is larger than the outer diameter of the pins.
5. The tobacco leaf curing monitoring device based on box-type curing process as described in claim 1, characterized in that, The isolation chamber has opposing extending baffles on its two opposite inner walls at the small open end; the installation chamber has opposing extending partitions on its two opposite inner walls at the open end. When the isolation compartment and the installation compartment are connected, the partition bar and the stop bar are perpendicular, and both ends of the partition bar and the two ends of the stop bar are provided with coaxial threaded holes at the overlapping point. The two coaxial threaded holes are sequentially screwed into flat-head bolts.