Bulk tobacco leaf baking and heating device
By employing multiple heating plates and a spiral heating pipe structure in the tobacco curing barn, combined with a fan system and a centralized box screen, the problem of uneven tobacco curing was solved, achieving uniform heating and energy-saving and environmentally friendly tobacco curing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LINYI TOBACCO
- Filing Date
- 2025-03-12
- Publication Date
- 2026-04-10
AI Technical Summary
In the traditional tobacco curing process, tobacco leaves closer to the heating plate are prone to over-drying and damage, while tobacco leaves further away are not cured sufficiently, resulting in uneven tobacco quality.
The system employs multiple heating plates and a spiral heating pipe structure, combined with a fan system, to ensure uniform heating and circulation of air. The centralized box and screen protect the equipment, achieving uniform heating and energy saving and environmental protection.
It achieves uniformity and energy saving in tobacco curing, improves tobacco quality and production efficiency, and reduces energy consumption and equipment maintenance costs.
Smart Images
Figure CN224098750U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of loose tobacco leaf baking and heating devices, and in particular to a loose tobacco leaf baking and heating device. Background Technology
[0002] After harvesting, mature tobacco leaves need to be cured promptly. Traditionally, tobacco leaves are cured by farmers themselves using coal stoves at the production site. In recent years, in areas with concentrated tobacco cultivation, intensive curing barns have been used for centralized curing. This has led to significant improvements in the equipment processing level, construction quality, curing technology, curing quality, and energy consumption of these barns, resulting in a certain improvement in the quality grade of the tobacco leaves. During the tobacco production process, curing is necessary to improve the quality of the tobacco.
[0003] When tobacco leaves are cured in a curing barn, they are usually heated directly by heating plates. The heating plates gradually increase the temperature inside the curing barn during the heating process, thereby heating and curing the tobacco leaves. However, tobacco leaves closer to the heating plates are directly exposed to the heat, causing them to be cured earlier, while those farther away require more time to complete curing. At this point, the tobacco leaves closer to the heating plates are cured for too long, resulting in excessive evaporation of internal moisture, making them very easy to break during transportation, thus affecting the quality of this batch of tobacco leaves. Utility Model Content
[0004] The main purpose of this invention is to provide a heating device for drying loose tobacco leaves, which aims to heat the tobacco leaves in the entire drying room simultaneously, thereby preventing some tobacco leaves from drying out too much.
[0005] To achieve the above objectives, the present invention provides a heating device for drying loose tobacco leaves, comprising:
[0006] The baking chamber has baking cavities and heating cavities spaced apart along a first horizontal direction. At least one heating port is provided on one side of the baking cavity, and the heating port is connected to the heating cavity.
[0007] At least one heating structure is provided, the heating structure comprising a plurality of heating plates and at least one heating pipe, the plurality of heating plates being spaced apart in the heating cavity along a first horizontal direction, the heating pipe extending along the first horizontal direction and coiled around the periphery of each heating plate, the air outlet of the heating pipe extending to the heating port.
[0008] At least one first fan is installed at the air inlet end of the heating pipe to allow air to be transported through the heating pipe into the heating chamber.
[0009] Preferably, the air outlet end of the heating pipe is provided with a concentrating box, and the concentrating box is installed on the heating port. The concentrating box is formed with a cavity, one side of the cavity is provided with an opening, the opening is communicated with the heating port, and a second fan is arranged in the cavity to convey hot air from the air outlet end of the heating pipe to the opening.
[0010] Preferably, a screen is installed in the heating port to prevent debris from falling into the concentrating box.
[0011] Preferably, a plurality of mounting plates are arranged in the heating cavity, and a plurality of positioning grooves are formed in each mounting plate. The heating plate is movably installed in the positioning groove.
[0012] Preferably, a fixing assembly is arranged on the mounting plate, and the fixing assembly abuts against one side of the heating plate to limit the heating plate from being separated from the positioning groove.
[0013] Preferably, the fixing assembly comprises:
[0014] A screw rod is rotatably connected to the heating plate.
[0015] A threaded sleeve is threadedly connected to the outer periphery of the screw rod to move along the axial direction of the screw rod when the screw rod rotates.
[0016] A pressing block is arranged on the threaded sleeve and is slidably connected in the positioning groove to press the heating plate.
[0017] Preferably, the heating pipe is a corrugated hose; and / or,
[0018] The heating plate is a microcrystalline heating plate.
[0019] Preferably, a limiting assembly is arranged on the mounting plate, and the limiting assembly abuts against the top side of the heating plate to limit the heating pipe from being separated from the heating plate.
[0020] Preferably, the limiting assembly comprises:
[0021] A plurality of supporting columns are installed on the top side of the mounting plate.
[0022] A shielding plate is arranged on the top end of the supporting columns and abuts against the top side of the heating plate.
[0023] Preferably, an auxiliary box is arranged between the fan and the heating pipe to install a plurality of the heating pipes.
[0024] The technical scheme provided by the utility model discloses, the heating structure includes a plurality of heating plate and at least one heating pipeline, a plurality of heating plate is spaced apart in the heating cavity along the first horizontal direction, the heating pipeline extends along the first horizontal direction and is arranged on the circumferential side of each heating plate, the air outlet end of the heating pipeline extends to the heat supply port, the first fan is installed on the air inlet end of the heating pipeline, so that air is transported to the heating cavity through the heating pipeline, the air circulating in the heating pipeline can be heated sufficiently through the coiled heating pipeline, enough heat is transported to the heating cavity, and the tobacco in each heating cavity is roasted uniformly through the cooperation of the fan and the plurality of heating pipelines. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creative labor.
[0026] Figure 1 It is a three-dimensional schematic view of an embodiment of the tobacco leaf roasting and heating device provided by the utility model.
[0027] Figure 2 It is Figure 1 It is an enlarged schematic view of part A in the middle.
[0028] Figure 3 It is Figure 1 It is a sectional view schematic view of the fixed assembly.
[0029] EXPLANATION OF DRAWINGS:
[0030] 1, roasting house, 2, first fan, 3, heating structure, 31, heating plate, 32, heating pipeline, 4, second fan, 5, concentration box, 6, screen, 7, mounting plate, 8, fixed assembly, 81, screw, 82, threaded sleeve, 83, pressing block, 9, limiting assembly, 91, shielding plate, 92, support column.
[0031] The realization of the utility model, functional characteristics and advantages will be further illustrated with reference to the drawings. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.
[0033] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.
[0034] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.
[0035] The present application provides a kind of loose tobacco leaf baking heating device, Figures 1 to 3 An embodiment of the loose tobacco leaf baking heating device provided by the present application.
[0036] Please refer to Figures 1 to 3 The loose tobacco leaf baking heating device includes a baking house 1, at least one heating structure 3 and at least one first fan 2, wherein the baking house 1 is formed with baking cavities and heating cavities arranged along the first horizontal direction, at least one heating port is opened on one side of the baking cavities, and the heating port is communicated with the heating cavities, the heating structure 3 includes a plurality of heating plates 31 and at least one heating pipe 32, a plurality of heating plates 31 are arranged in the heating cavities along the first horizontal direction, the heating pipe 32 is arranged along the first horizontal direction, and is spirally arranged on the side of each heating plate 31, the air outlet end of the heating pipe 32 extends to the heating port, and the first fan 2 is installed at the air inlet end of the heating pipe 32 to convey air through the heating pipe 32 into the heating cavities.
[0037] The first fan 2 is started, air enters the air inlet end of the heating pipe 32, and is heated when passing through the heating pipe 32. The heating pipe 32 spirally surrounds the periphery of the heating plate 31, ensuring that the air fully absorbs heat. The heated air flows out of the air outlet end of the heating pipe 32 and enters the baking cavity through the heat supply port. The tobacco in the baking cavity is gradually heated, and the moisture begins to evaporate. Since the plurality of heating plates 31 are arranged along the first horizontal direction, and the heating pipe 32 spirally surrounds the periphery of each heating plate 31, the temperature distribution in the baking cavity is uniform, and local overheating or insufficient heating is avoided. The first fan 2 continuously works, and the air circulates between the heating pipe 32 and the baking cavity to maintain stable temperature and humidity in the baking cavity, ensuring uniform heating and gradual drying of the tobacco.
[0038] The plurality of heating plates 31 and the spirally wound heating pipe 32 ensure uniform temperature distribution in the baking cavity, avoid uneven heating of the tobacco, improve the baking quality, the heating pipe 32 spirally surrounds the periphery of the heating plate 31, increases the contact area of the air and the heating plate 31, improves the heat exchange efficiency, shortens the baking time, and reduces the heat loss by circulating the hot air through the fan, reduces the energy consumption, meets the energy saving and environmental protection requirements, the baking cavity and the heating cavity in the baking room 1 are arranged along the first horizontal direction, the structure is compact, saves space, and is convenient to install and maintain. The setting of the first fan 2 and the heating pipe 32 makes the whole baking process highly automatic, easy to operate, and reduces manual intervention. Through this setting, the tobacco baking process is more efficient, uniform, energy-saving and environmentally friendly, which helps to improve the baking quality and production efficiency of the tobacco.
[0039] Therefore, in the technical scheme provided by the utility model, the heating structure 3 includes a plurality of heating plates 31 and at least one heating pipe 32, the plurality of heating plates 31 are arranged in the heating cavity along the first horizontal direction, the heating pipe 32 is arranged along the first horizontal direction and spirally surrounds the periphery of each heating plate 31, the air outlet end of the heating pipe 32 extends to the heat supply port, and the first fan 2 is installed at the air inlet end of the heating pipe 32 to convey air to the heating cavity through the heating pipe 32. The spirally arranged heating pipe 32 ensures that the air flowing through the heating pipe 32 is fully heated, ensuring that sufficient heat is delivered to the heating cavity. The use of one fan with multiple heating pipes 32 ensures that the tobacco in each heating cavity is evenly baked.
[0040] The size of the heating cavity varies according to requirements, and the diameter of the heating pipe 32 is generally not too large, so that the heating effect in some areas is deviated, and the heat output by the heating pipe 32 that delivers hot air to the same heating cavity needs to be concentrated to the heating cavity.
[0041] Specifically, in the embodiment of the utility model, the air outlet end of the heating pipeline 32 is provided with a concentration box 5, the concentration box 5 is installed on the heat supply port, the concentration box 5 forms a cavity, one side of the cavity is provided with an opening, the opening is communicated with the heat supply port, and a second fan 4 is arranged in the cavity to convey hot air from the air outlet end of the heating pipeline 32 to the opening.
[0042] The air outlet end of the heating pipeline 32 is provided with the concentration box 5, and the second fan 4 is used to concentrate and convey the hot air to the heat supply port, so that the hot air can enter the baking cavity efficiently and centrally, heat loss is reduced, the utilization rate of the hot air is improved, the second fan 4 is arranged in the concentration box 5, the hot air can be actively conveyed from the air outlet end of the heating pipeline 32 to the heat supply port, the flowability and conveying efficiency of the hot air are enhanced, energy loss of the hot air in the conveying process due to resistance or diffusion is avoided, the cavity structure of the concentration box 5 can uniformly distribute the hot air to the heat supply port, so that the hot air can enter the baking cavity at a stable flow rate and pressure, the temperature distribution in the baking cavity is more uniform, local temperature is prevented from being too high or too low, and the hot air can enter the baking cavity quickly and stably by the active air supply of the second fan 4, the temperature rising speed in the baking house 1 is accelerated, the preheating time of the tobacco baking is shortened, and the overall baking efficiency is improved.
[0043] Further, the heat supply port is provided with a screen 6 to prevent debris from falling into the concentration box 5.
[0044] The screen 6 can effectively prevent tobacco debris, dust or other impurities from entering the concentration box 5 from the baking cavity, avoid the accumulation of the debris in the concentration box 5, affect the flow and distribution of the hot air, and if the debris enters the concentration box 5, the fan blades can be sucked into the second fan 4, causing the fan blades to wear or be blocked, and even affecting the normal operation of the heating pipeline 32, the installation of the screen 6 can protect the second fan 4 and the heating pipeline 32, and prolong the service life of the equipment.
[0045] According to the different number of heating cavities, different numbers of heating structures 3 are added, specifically, in the embodiment of the utility model, a plurality of mounting plates 7 are arranged in the heating cavity, a plurality of positioning grooves are arranged on each mounting plate 7, and the heating plate 31 is movably installed in the positioning groove.
[0046] The heating plate 31 is movably installed on the mounting plate 7 through the positioning groove to form a modular structure, which makes the installation and disassembly of the heating plate 31 more convenient, facilitates the assembly, maintenance and replacement of the equipment, and reduces the maintenance cost, since the heating plate 31 is movably installed, the number of the heating plate 31 can be increased or reduced at any time according to production needs, the expansibility of the equipment is enhanced, and the needs of future capacity expansion or process improvement are met.
[0047] In order to ensure that the heating plate 31 is not moved during use, it is necessary to be fixed, specifically, in the embodiment of the utility model, the mounting plate 7 is provided with a fixing assembly 8, the fixing assembly 8 is abutted on one side of the heating plate 31 to limit the heating plate 31 from separating from the positioning groove.
[0048] Further, the fixing assembly 8 includes a screw rod 81, a threaded sleeve 82 and a pressing block, the screw rod 81 is rotationally connected in the heating plate 31, the threaded sleeve 82 is threadedly connected to the outer circumferential side of the screw rod 81 to move along the axial direction of the screw rod 81 when the screw rod 81 rotates, and the pressing block 83 is arranged on the threaded sleeve 82 and is slidingly connected in the positioning groove to press the heating plate 31.
[0049] The fixing assembly 8 adopts the design of the screw rod 81 and the threaded sleeve 82, and the movement of the pressing block 83 can be realized by rotating the screw rod 81, so that the heating plate 31 is easily fixed or released, which makes the installation and disassembly of the heating plate 31 more convenient, saves time and labor cost, and the heating plate 31 may expand or contract due to high temperature, the design of the fixing assembly 8 allows the pressing block 83 to slide in the positioning groove, which can adapt to the size change of the heating plate 31 to a certain extent, avoid deformation or damage caused by thermal expansion and contraction, and firmly fix the heating plate 31 through the fixing assembly 8 to reduce the wear of the heating plate 31 due to vibration or movement, prolong the service life of the heating plate 31 and other related parts.
[0050] Further, the heating pipe 32 is a corrugated hose, which has good flexibility and can adapt to complex installation paths, is convenient to bend and arrange in the heating cavity, reduces installation difficulty and time, and the corrugated hose is made of high-temperature resistant material and can withstand high temperature generated during baking to ensure long-term stable operation in a high-temperature environment.
[0051] The heating plate 31 is a microcrystalline heating plate 31, which has excellent heat conduction performance, can quickly transfer heat to the air, improve the heating efficiency, shorten the baking time, and the heating surface temperature of the microcrystalline heating plate 31 is uniformly distributed, which can ensure that the hot air temperature in the baking cavity is consistent, avoid local overheating or insufficient heating, improve the quality of tobacco baking, and the microcrystalline heating plate 31 usually has an overheat protection function, which can automatically power off when the temperature is too high, avoid equipment damage or safety accidents, and improve the safety of the equipment.
[0052] When the heating pipe 32 is a corrugated hose and the heating plate 31 is a microcrystalline heating plate 31, the durability and long service life of the microcrystalline heating plate 31 reduce the maintenance and replacement frequency of the equipment, reduce the operating cost, and the flexibility of the corrugated hose and the high heating performance of the microcrystalline heating plate 31 enable the equipment to adapt to different scale and process baking requirements, improve the versatility of the equipment.
[0053] The corrugated hose may be blown away from the heating plate 31 by the wind, so the heating plate 31 needs to be limited, and the limiting assembly 9 is arranged on the mounting plate 7 and abuts the top side of the heating plate 31 to limit the heating pipe from being separated from the heating plate 31.
[0054] Further, the limiting assembly 9 includes a plurality of support columns 92 mounted on the top side of the mounting plate 7 and a shielding plate 91 arranged at the top end of the plurality of support columns 92 and abutting the top side of the heating plate 31.
[0055] The limiting assembly 9 abuts the top side of the heating plate 31 through the shielding plate 91, which can effectively limit the corrugated hose from being blown away from the heating plate 31 by the wind, ensure the connection between the heating pipe 32 and the heating plate 31, avoid affecting the hot air delivery due to the separation of the pipe, and ensure the close contact between the heating pipe 32 and the heating plate 31 by limiting the movement of the corrugated hose, avoid heat loss, improve the heat conduction efficiency, and thus guarantee the heating effect in the baking cavity. Moreover, the support columns 92 and the shielding plate 91 are usually made of high-temperature-resistant materials, which can adapt to the high-temperature environment in the baking cavity and ensure that the limiting assembly 9 remains stable and functional under long-term high temperature.
[0056] The auxiliary box is arranged between the first fan 2 and the heating pipe 32 to mount a plurality of heating pipes 32. The auxiliary box enables one first fan 2 to provide kinetic energy to a plurality of heating pipes 32 at the same time.
[0057] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.
Claims
1. A loose leaf tobacco baking and heating device, characterized by, The utility model relates to a roasting room, form with along first horizontal direction interval arrangement's roasting cavity and heating cavity, one side of the roasting cavity is provided with at least one heating port, and the heating port is communicated with the heating cavity, At least one heating structure, the heating structure includes a plurality of heating plates and at least one heating pipe, a plurality of the heating plates are arranged in the heating cavity along the first horizontal direction, the heating pipe extends along the first horizontal direction, and is spirally arranged on the side of each heating plate, the air outlet end of the heating pipe extends to the heating port, At least one first fan, the first fan is installed at the air inlet end of the heating pipe, so that air is transported into the heating cavity through the heating pipe. The air outlet end of the heating pipe is provided with a concentration box, and the concentration box is installed at the heating port, the concentration box is formed with a cavity, one side of the cavity is provided with an opening, the opening is communicated with the heating port, and a second fan is arranged in the cavity to transport hot air from the air outlet end of the heating pipe to the opening.
2. The loose tobacco leaf baking and heating device according to claim 1, wherein, A screen is installed in the heating port to prevent debris from falling into the concentration box.
3. The loose tobacco leaf baking and heating device according to claim 2, wherein, A plurality of mounting plates are arranged in the heating cavity, a plurality of positioning grooves are formed in each mounting plate, and the heating plate is movably mounted in the positioning groove.
4. The loose tobacco leaf baking and heating device as claimed in claim 1, wherein, A fixing assembly is arranged on the mounting plate, the fixing assembly abuts one side of the heating plate to limit the heating plate from being separated from the positioning groove.
5. The loose tobacco leaf baking and heating device as claimed in claim 4, wherein, The fixing assembly includes:
6. The loose tobacco leaf baking and heating device as claimed in claim 5, wherein, A screw rod is rotatably connected in the heating plate, A threaded sleeve is threadedly connected to the outer side of the screw rod to move along the axial direction of the screw rod when the screw rod rotates, A pressing block is arranged on the threaded sleeve and is slidably connected in the positioning groove to press the heating plate. The heating pipe is a corrugated hose; and / or 7. The loose tobacco leaf baking and heating device as claimed in claim 1, wherein, The heating plate is a microcrystalline heating plate. A limiting assembly is arranged on the mounting plate, the limiting assembly is attached to the top side of the heating plate to limit the heating pipe from being separated from the heating plate.
8. The loose tobacco leaf baking and heating device as claimed in claim 4, wherein, The limiting assembly includes:
9. The loose tobacco leaf curing and heating apparatus of claim 8, wherein, A plurality of support columns are mounted on the top side of the mounting plate, A shielding plate is arranged at the top end of the plurality of support columns and is attached to the top side of the heating plate. An auxiliary box is arranged between the first fan and the heating pipe to mount a plurality of the heating pipes.
10. The loose tobacco leaf baking and heating device as claimed in claim 1, wherein,