Novel leaf moistening cylinder for hot air leaf moistening machine
By incorporating a hollow jacket and a self-heating design with heating elements inside the leaf-humidifying cylinder, the problem of uneven tobacco leaf temperature is solved, ensuring the stability and efficiency of the leaf-humidifying process.
Patent Information
- Application Number
- CN202423180722.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-23
AI Technical Summary
In existing hot air leaf humidifiers, the temperature of tobacco leaves is uneven and it is difficult to reach the predetermined temperature, resulting in insufficient humidification effect and affecting the efficiency of the leaf threshing and re-drying process.
Design a leaf-moistening cylinder with a hollow sandwich structure, which is equipped with a heating tube and a sliding contact line device. It achieves uniform heating of the cylinder and tobacco leaves through self-heating, and independently controls the temperature of each section of the cylinder to adjust the temperature and ensure stable tobacco leaf temperature at the discharge end.
It achieves uniformity and stability of tobacco leaf temperature inside the leaf-moistening cylinder, avoids the generation of steamed leaves and excessively moist tobacco leaves, and improves the moistening effect and the efficiency of leaf threshing and re-drying.
Smart Images
Figure CN223810361U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the threshing and redrying production technical field, concretely relates to a novel leaf moistening cylinder for hot air leaf moistening machine. BACKGROUND
[0002] Leaf moistening is one of the important processes in threshing and redrying, mainly to increase the temperature and humidity of primary cured tobacco leaves, and strengthen its flexibility, to ensure that the next step of leaf and stem separation in the leaf threshing process can be carried out smoothly. Research shows that the moisture content and temperature of the primary cured tobacco leaves after the leaf moistening process have a significant impact on the stem content, broken piece rate and medium piece rate and other indicators of the leaf threshing process, so the completion of the leaf moistening process has a significant impact on the efficiency of the entire threshing and redrying process.
[0003] In the prior art, the leaf moistening process is mainly carried out in a hot air leaf moistening machine, specifically by circulating hot air, direct steam injection, and steam-water mixed medium into the leaf moistening cylinder of the hot air leaf moistening machine to achieve the purpose of warming and humidifying the primary cured tobacco leaves. However, in actual production, in order to prevent the local temperature of the tobacco leaves from being too high and producing steamed tobacco, the circulating hot air volume and the steam volume of the direct steam injection must be appropriately reduced. In order to avoid the local moisture of the tobacco leaves being too high and producing high-moisture tobacco, the amount of steam-water mixed medium must also be appropriately reduced. Under the condition that the circulating hot air, direct steam injection, and steam-water mixed medium are all limited to different degrees, the total heat input into the leaf moistening cylinder will be reduced as a whole, and the leaf moistening cylinder itself will also absorb a certain amount of heat. The above-mentioned situations will accumulate and make it difficult for the temperature of the tobacco leaves at the discharge port of the hot air leaf moistening machine to reach the predetermined temperature after leaf moistening, resulting in insufficient leaf moistening effect of the tobacco leaves and ultimately affecting the realization of the leaf threshing indicators. At the same time, since the circulating hot air, direct steam injection, and steam-water mixed medium in the prior art are all input into the leaf moistening cylinder from the two ends or one end of the opening of the leaf moistening cylinder, the tobacco leaves farther away from the heat supply end will absorb relatively less heat, which makes the heat absorbed by the tobacco leaves in the leaf moistening cylinder uneven, and ultimately leads to the instability of the temperature of the tobacco leaves at the discharge port of the leaf moistening machine.
[0004] To solve the above-mentioned problems, the utility model is proposed. UTILITY MODEL CONTENT
[0005] To solve the problems of the prior art, the purpose of the utility model is to provide a novel leaf moistening cylinder for a hot air leaf moistening machine. The leaf moistening cylinder can self-heat, so that the cylinder body itself has a certain amount of heat, avoiding the absorption of external heat by the cylinder body. At the same time, after self-heating, the heat radiation of the leaf moistening cylinder can also be transferred to the tobacco leaves in the cylinder, effectively solving the problem that the total heat input into the leaf moistening cylinder is limited, resulting in the temperature of the tobacco leaves after leaf moistening not reaching the predetermined temperature. In addition, the cylinder body of the utility model can realize segmented self-heating, and the self-heating temperature of each segment of the cylinder body can be adjusted according to actual production needs. By adjusting the self-heating temperature of each segment of the cylinder body, the temperature of the tobacco leaves at the discharge port of the leaf moistening machine can be kept stable.
[0006] The utility model discloses a technical scheme is:
[0007] Provide a kind of novel leaf moistening cylinder for hot air leaf moistening machine, the novel leaf moistening cylinder overall is the cylinder structure with hollow sandwich, the hollow sandwich includes several independent hollow sandwich units 1 evenly distributed along the axial direction of cylinder body, the cavity of each independent hollow sandwich unit 1 is provided with several evenly distributed heating pipe 2, wherein, the cavity of each hollow sandwich unit 1 can also be passed into heating medium, the heating pipe 2 is used to heat the heating medium, wherein heating medium can be water.
[0008] Preferably, the outer wall of the novel leaf moistening cylinder is provided with a slide wire device 3 and several guide wires 4 arranged along the axial direction of the cylinder body.
[0009] The slide wire device 3 at least includes several conductor rings 31 and current collectors 32, the conductor rings 31 are sleeved on the outer peripheral wall of the novel leaf moistening cylinder along the axial direction of the novel leaf moistening cylinder, and are parallel to each other; wherein several conductor rings 31 are insulated from each other, specifically, the conductor rings 31 can be installed in a semi-closed insulating sheath to realize insulation from each other, which can refer to the mode of realizing insulation from each other in the existing slide wire device 3 containing multiple conductors.
[0010] Each conductor ring 3 is electrically connected to one guide wire, and each guide wire is electrically connected to all heating pipes 2 in one hollow sandwich unit 1.
[0011] The conductor ring 31 and the current collector 32 are in sliding contact to cooperate with the access of external power, and after the conductor ring 31 is electrically connected to the guide wire, the electric energy is transmitted to the heating pipe 2. The power supply principle of the cooperation of the conductor ring 31 and the current collector 32 refers to the existing technology of slide wire
[0012] Preferably, the conductor ring 3 is a single-pole slide wire.
[0013] Preferably, each hollow sandwich unit 1 is provided with a branch pipe 5 communicating with the cavity of the hollow sandwich unit 1 on the outer wall of the novel leaf moistening cylinder, and the branch pipe 5 communicates with a water inlet main pipe 6.
[0014] Preferably, the branch pipe 5 is further provided with a solenoid valve 51.
[0015] Preferably, the outer wall of the novel leaf moistening cylinder corresponding to the hollow sandwich unit 1 is further provided with a drain valve 7 communicating with the cavity of the hollow sandwich unit 1.
[0016] Preferably, the heating tube 2 is provided with a heating tube joint 21 at both ends and a heating tube body in the middle, and the heating tube joint 21 at both ends of the heating tube 2 penetrates the sealing end of the hollow sandwich unit 1 at both ends and is electrically connected with the wire, wherein the penetration of the heating tube 2 and the hollow sandwich unit 1 at the sealing end is sealed by an insulating rubber plug 9.
[0017] Preferably, the number of the hollow sandwich unit 1 is 2-10, but the actual number of the hollow sandwich unit can be adjusted as needed.
[0018] Preferably, the installed heating tube 2 in the hollow sandwich unit 1 is uniformly distributed along the circumference of the new leaf moistening cylinder body, and the number of the heating tube 2 in each hollow sandwich unit 1 is 4-8, so as to ensure that the heating medium in the hollow sandwich unit 1 can be quickly and uniformly heated, but the actual number of the heating tube 2 can be adjusted as needed.
[0019] Preferably, the heating tube body of the heating tube 2 does not contact the cylinder wall of the new leaf moistening cylinder.
[0020] In addition, the outer wall of the new leaf moistening cylinder can also be coated with a heat insulation material to block the outward diffusion of heat in the leaf moistening cylinder.
[0021] The inner wall of the new leaf moistening cylinder is also provided with a plurality of harrow spikes uniformly distributed along the circumference of the inner wall, and the harrow spikes are used to loosen the tobacco leaves in the leaf moistening cylinder when the leaf moistening cylinder rotates.
[0022] The device of the utility model is also connected with a control mainboard, and is connected with a water vapor pipeline system and a hot air circulation system, the water vapor pipeline system can provide water vapor medium for tobacco sheets in the leaf moistening cylinder, and the hot air circulation system can provide circulating hot steam for the tobacco sheets in the leaf moistening cylinder.
[0023] When the leaf moistening cylinder of the utility model works, the water inlet main pipe 6 is connected with an external heating medium supply mechanism, heating medium is introduced into each hollow sandwich unit 1 through the water inlet main pipe 6 and the branch pipe 5, then an external power supply is turned on, the heating tube 2 is electrified through the electric connection of the slide contact wire device 3 and the wire 4, the heating tube 2 generates heat and can heat the heating medium at the same time, wherein the heating time and the heating temperature can be controlled through the control mainboard, then the heated heating medium transmits heat to the cylinder body, so that the cylinder body itself and the air in the cylinder have a certain basic temperature.
[0024] Subsequently, other components of the hot air leaf moistening machine are started, and the tobacco leaves enter the cylinder from the feeding end of the leaf moistening cylinder, the steam pipeline system and the hot air circulation system supply steam and steam medium from the feeding end and / or the discharging end, the tobacco leaves in the cylinder are loosened and in a suspended state under the action of the airflow and the rake nails, and the steam and the steam medium entering the cylinder warm and humidify the tobacco leaves, at this time, since the cylinder and the inside of the cylinder have a certain basic temperature, the overall heat received by the tobacco leaves in the leaf moistening cylinder is increased compared to the external heat alone, and in the case that the steam and the steam medium supply amount must be limited in order to avoid steamed tobacco and high-moisture tobacco in the prior art, the tobacco leaves at the discharging end of the leaf moistening cylinder can still reach the preset target.
[0025] The temperature of the heated medium is preferably in the range of 35-50 DEG C, which can compensate for the insufficient external heat supply and does not bring negative effects to the tobacco leaves in the leaf moistening cylinder.
[0026] The utility model discloses the beneficial effects of the following:
[0027] 1. The leaf moistening cylinder of the utility model innovatively changes the passive heating of the original leaf moistening cylinder and the tobacco leaves in the leaf moistening cylinder into passive heating and active heating, the leaf moistening cylinder provides a basic temperature for the leaf moistening cylinder itself and the air / tobacco leaves in the leaf moistening cylinder through self-heating, increases the heat radiation of the tobacco leaves during the leaf moistening process, and avoids the problem that the temperature of the tobacco leaves at the discharging end of the leaf moistening cylinder cannot reach the preset target due to the limitation of the total heat input to avoid steamed tobacco and high-moisture tobacco.
[0028] 2. The self-heating drum-type hot air leaf moistening machine can heat the drum to 35-50 DEG C, provides a basic temperature for the leaf moistening process, avoids the absorption of external temperature by the drum, effectively avoids the reduction of the superimposed temperature, and ensures that the temperature of the tobacco leaves at the discharging end of the leaf moistening cylinder reaches the preset target.
[0029] 3. The self-heating drum of the utility model uses a flowable medium such as water to heat the inner wall of the drum, realizes stable heating of the inner wall of the drum, makes the temperature of each region of the inner wall of the drum uniform, and provides a stable and sustainable temperature environment for the leaf moistening process.
[0030] 4. The utility model sets up multiple independent sealed hollow sandwich units 1 and independent temperature control wires, can selectively start heating according to the temperature of the cylinder, and can realize different temperatures in different regions, so that the compatibility of the drum itself with the process is further improved.
[0031] 5. The novel leaf moistening cylinder is in a rotating state in order to make the moisture and heat received by the tobacco leaves as uniform as possible, so that the novel leaf moistening cylinder supplies power to the heating pipes 2 through the slide wire device 3 and the wires 4, and simultaneously electrically connects each wire with all the heating pipes 2 in the hollow sandwich unit 1, so as to realize partitioned self-heating and partitioned temperature control. BRIEF DESCRIPTION OF DRAWINGS
[0032] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present utility model, and for those skilled in the art, other solutions can also be obtained without creative labor.
[0033] Figure 1 It is a structural schematic view of the leaf moistening cylinder of the present utility model;
[0034] Figure 2 It is an A partial enlarged view of the leaf moistening cylinder of the present utility model;
[0035] Figure 3 It is a sectional view of the leaf moistening cylinder of the present utility model;
[0036] Figure 4 It is a B partial enlarged view of the sectional view of the leaf moistening cylinder of the present utility model;
[0037] Figure 5 It is a C partial enlarged view of the B partial enlarged view of the leaf moistening cylinder of the present utility model
[0038] Reference signs:
[0039] 1. Hollow sandwich unit; 2. Heating pipe; 21. Heating pipe joint; 3. Slide wire device; 31. Conductor ring; 32. Current collector; 321. Current collector support; 4. Wire; 5. Branch pipe; 51. Electromagnetic valve; 6. Water inlet main pipe; 7. Drain valve; 8. Rake nail; 9. Insulating rubber plug. DETAILED DESCRIPTION
[0040] The present utility model will be further described in detail below in combination with the embodiments, but is not limited to the present utility model, and any transformation or improvement based on the teaching of the present utility model falls within the protection scope of the present utility model. The specific technology or condition not mentioned in the embodiments is carried out according to the technology or condition described in the literature in the field or according to the product instruction.
[0041] Example 1
[0042] As Figure 1As shown, the embodiment provides a new leaf moistening cylinder for hot air leaf moistening machine, the new leaf moistening cylinder is a cylinder structure with hollow sandwich, the hollow sandwich contains 4 independent hollow sandwich units 1 uniformly distributed along the cylinder axis direction, 8 evenly distributed heating pipes 2 are arranged in the cavity of each independent hollow sandwich unit 1, wherein water can also be introduced into the cavity of each hollow sandwich unit 1, and the heating pipe 2 is used for heating the heating medium.
[0043] The outer wall of the new leaf moistening cylinder is provided with a slide wire device 3 and 4 wires 4 arranged along the axial direction of the cylinder;
[0044] The slide wire device 3 includes 4 conductor rings 31, a current collector 32 and a conductor ring 31 protection sleeve, the conductor ring 31 is arranged on the outer wall of the new leaf moistening cylinder in parallel along the axial direction of the new leaf moistening cylinder, and the four conductor rings 31 are respectively installed with a semi-open insulation mounting seat to realize the mutual insulation between the four conductor rings 31;
[0045] Each of the conductor rings 3 is electrically connected with one of the wires, and each of the wires is electrically connected with all the heating pipes 2 in one of the hollow sandwich units 1;
[0046] The conductor ring 31 and the current collector 32 are in sliding contact to cooperate with the external power supply, and after the conductor ring 31 is electrically connected with the wire, the electricity is transmitted to the heating pipe 2. The power supply principle of the conductor ring 31 and the current collector 32 is referred to the existing technology of slide wire
[0047] Further, the conductor ring 3 is a single-pole slide wire.
[0048] Further, each of the hollow sandwich units 1 is provided with a branch pipe 5 communicated with the cavity of the hollow sandwich unit 1 on the outer wall of the new leaf moistening cylinder, and the branch pipe 5 is communicated with a water inlet main pipe 6.
[0049] Further, the branch pipe 5 is further provided with a solenoid valve 51, and the solenoid valve is connected with a control main board and controlled by the control main board.
[0050] Further, the hollow sandwich unit 1 is further provided with a drain valve 7 communicated with the cavity of the hollow sandwich unit 1 on the outer wall of the new leaf moistening cylinder.
[0051] Further, the heating pipe 2 is provided with a heating pipe joint 21 at both ends and a heating pipe body in the middle, the heating pipe joint 21 at both ends of the heating pipe 2 penetrates the sealing end of the hollow sandwich unit 1 at both ends and is electrically connected with the wire, wherein the penetration of the heating pipe 2 and the hollow sandwich unit 1 at the sealing end is sealed by an insulating rubber plug 9, more specifically, the wire comprises a positive wire and a negative wire, the heating pipe joint 21 at both ends of the heating pipe 2 is connected with the positive wire and the negative wire respectively.
[0052] Further, the eight heating pipes 2 installed in the hollow sandwich unit 1 are uniformly distributed along the circumference of the new tobacco leaf moistening cylinder body, so that the heating medium in the hollow sandwich unit 1 can be quickly and uniformly heated.
[0053] Further, the heating pipe body of the heating pipe 2 does not contact the cylinder wall of the new tobacco leaf moistening cylinder, so as to ensure the heating effect of the heating pipe 2 on the heating medium water, finally the cylinder body and the heat in the cylinder are provided by the heating medium water, so as to ensure the stability and uniformity of the heating.
[0054] The inner wall of the new tobacco leaf moistening cylinder is further provided with a plurality of harrow spikes uniformly distributed along the circumference of the inner wall, and the harrow spikes are used to loosen the tobacco leaves in the tobacco leaf moistening cylinder when the tobacco leaf moistening cylinder rotates.
[0055] The device is further connected with a control mainboard, and is connected with a water vapor pipeline system and a hot air circulation system, the water vapor pipeline system can provide water vapor medium for the tobacco sheets in the tobacco leaf moistening cylinder, and the hot air circulation system can provide circulating hot steam for the tobacco sheets in the tobacco leaf moistening cylinder.
[0056] When the new tobacco leaf moistening cylinder works, the external heating medium supply mechanism is connected with the water inlet main pipe 6, and the heating medium is introduced into each hollow sandwich unit 1 through the water inlet main pipe 6 and the branch pipe 5, then the external power supply is turned on, the heating pipe 2 is powered through the electric connection of the slide contact wire device 3 and the wire 4, the heating pipe 2 generates heat and can heat the heating medium at the same time, wherein the heating time and the heating temperature can be controlled by the control mainboard, then the heated heating medium transmits heat to the cylinder body, so that the cylinder body itself and the air in the cylinder have a certain basic temperature.
[0057] Subsequently, other components of the hot air leaf conditioning machine are started, and the tobacco leaves enter the cylinder from the feeding end of the leaf conditioning cylinder, the steam pipeline system and the hot air circulation system supply steam and steam medium from the feeding end and / or the discharging end, the tobacco leaves in the cylinder become loose and in a suspended state under the action of the airflow and the rakes, and the steam and steam medium entering the cylinder increase the temperature and humidity of the tobacco leaves, at this time, due to the fact that the cylinder and the inside of the cylinder have a certain basic temperature, the overall heat received by the tobacco leaves in the leaf conditioning cylinder is higher than that of the external heat alone, and in the case that the steam and steam medium supply amount must be limited in order to avoid the emergence of steamed tobacco and high-moisture tobacco in the prior art, the tobacco leaves at the discharging end of the leaf conditioning cylinder can still reach the preset target.
[0058] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting, and although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application; the dimensions described in the drawings and the embodiments are not related to specific objects and are not used to limit the protection scope of the present application, and the dimensions of the objects can be selected and changed according to actual needs.
Claims
1. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine, characterized in that, The novel leaf-moistening cylinder is a cylindrical structure with a hollow interlayer. The hollow interlayer includes several independent hollow interlayer units (1) evenly distributed along the axis of the cylinder. Each independent hollow interlayer unit (1) has several evenly distributed heating tubes (2) inside its cavity. A heating medium can also be introduced into the cavity of each hollow interlayer unit (1), and the heating tubes (2) are used to heat the heating medium.
2. The novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 1, characterized in that, The outer wall of the new type of leaf-lubricating cylinder is provided with a sliding contact line device (3) and several wires (4) arranged along the cylinder axis; The sliding contact line device (3) includes at least a plurality of conductor rings (31) and current collectors (32). The conductor rings (31) are sleeved on the outer peripheral wall of the new leaf-lubricating cylinder body parallel to each other along the axial direction of the cylinder body. Each of the conductor rings (31) is electrically connected to one of the wires; each of the wires is electrically connected to all the heating tubes (2) within a hollow sandwich unit (1); The conductor ring (31) and the current collector (32) slide in contact to cooperate in connecting to external power, and after being electrically connected to the wire through the conductor ring (31), the electricity is transmitted to the heating tube (2).
3. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 2, characterized in that, The sliding contact line device (3) is a single-pole sliding contact line.
4. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 1, characterized in that, Each hollow sandwich unit (1) has a branch pipe (5) on the outer wall of the corresponding new leaf-lubricating cylinder, which is connected to the cavity of the hollow sandwich unit (1) and the branch pipe (5) is connected to the main water inlet pipe (6).
5. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 4, characterized in that, A solenoid valve (51) is also installed on the branch pipe (5).
6. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 1, characterized in that, The hollow sandwich unit (1) is also provided with a drain valve (7) on the outer wall of the new leaf-lubricating cylinder that communicates with the cavity of the hollow sandwich unit (1).
7. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 2, characterized in that, The heating tube (2) has heating tube connectors (21) at both ends and heating tube body in the middle. The heating tube connectors (21) at both ends of the heating tube (2) pass through the sealed ends of the hollow sandwich unit (1) and are electrically connected to the wire. The through-hole of the heating tube (2) and the sealed end of the hollow sandwich unit (1) is sealed by an insulating rubber plug (9).
8. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 1, characterized in that, The number of hollow sandwich units (1) is 2-10 segments.
9. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 1, characterized in that, The heating tubes (2) installed in the hollow sandwich unit (1) are evenly distributed along the circumference of the new leaf-lubricating cylinder body, and the number of heating tubes (2) in each hollow sandwich unit (1) is 4-8.
10. A novel leaf-humidifying cylinder for a hot air leaf-humidifying machine according to claim 7, characterized in that, The heating tube body of the heating tube (2) does not contact the cylinder wall of the new leaf-moistening cylinder.