CN216059155U - Built-in baffle type hot air low-speed convection type cut tobacco drying device - Google Patents
Built-in baffle type hot air low-speed convection type cut tobacco drying device Download PDFInfo
- Publication number
- CN216059155U CN216059155U CN202122306222.4U CN202122306222U CN216059155U CN 216059155 U CN216059155 U CN 216059155U CN 202122306222 U CN202122306222 U CN 202122306222U CN 216059155 U CN216059155 U CN 216059155U
- Authority
- CN
- China
- Prior art keywords
- fixed bed
- tobacco
- hot air
- drying device
- cut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a hot air low-speed convection type cut tobacco drying device with a built-in clapboard, which comprises a fixed bed (7), wherein the upper part of the side wall of the fixed bed (7) is connected with a feeding device (3), and the lower part of the side wall is connected with a combustion furnace (1); the upper part inside the fixed bed (7) is provided with a circumferential loosening device (6); the top of the fixed bed (7) is connected with a moisture exhaust air pipe (10), and the bottom of the fixed bed is connected with a discharge conveying device (9) through a discharge pipe (12); the fixed bed (7) has a partition (75) extending obliquely downward toward the inside of the fixed bed (7) on the inner wall thereof. According to the utility model, the tobacco is heated in a low-speed vertical upward convection mode by hot air, and the control of the tobacco shred drying time and the tobacco shred drying temperature in the fixed bed is realized by regulating and controlling the speed and the temperature of the hot air, so that the tobacco shred drying quality and the stability can be effectively improved. The utility model has simple structure, can make up the respective defects of two traditional cut-tobacco drying devices, namely the roller cut-tobacco drying device and the airflow cut-tobacco drying device, and has better popularization and application prospects.
Description
Technical Field
The utility model belongs to the technical field of tobacco processing, and particularly relates to a built-in clapboard type hot air low-speed convection type cut tobacco drying device.
Background
Cut tobacco drying is a key process in the cut tobacco processing process, and the processing strength of the cut tobacco drying has great influence on the sensory quality of cigarettes. At present, a tobacco drying device mainly comprises a roller tobacco drying device and an airflow tobacco drying device, wherein the roller tobacco drying device heats tobacco shreds by combining a cylinder wall heat conduction mode and a hot air convection mode, the tobacco drying temperature is generally below 150 ℃, the tobacco drying time is 4-6 min, the natural aroma of the dried tobacco shreds is kept better, but the filling value of the tobacco shreds is lower, and the phenomena of head drying and tail drying (namely the situation that the water content of the dried tobacco shreds is lower in the beginning section and the ending section of the dried tobacco shreds) exist; the air flow tobacco shred drying device adopts a hot air convection mode to dry tobacco shreds quickly at high temperature, the hot air temperature is higher, the tobacco shred drying time is 1-3 s generally about 200 ℃, the filling value of the dried tobacco shreds is higher, meanwhile, the impurity gas in the tobacco is obviously removed, but the tobacco shred drying device is not beneficial to keeping the herbal fragrance of the tobacco, in addition, the tobacco shreds are unevenly distributed in the air flow pipe due to the higher hot air speed and the short tobacco shred drying time, the fluctuation of the outlet moisture is larger, and the tobacco shreds with 'agglomeration' and 'wet agglomeration' are easily formed. Therefore, aiming at the advantages and disadvantages of the roller cut tobacco drying device and the airflow cut tobacco drying device, whether a cut tobacco drying device for realizing 'slow baking with small fire' exists or not is solved, the problems that the aroma quality of the existing roller cut tobacco drying device is improved but the filling performance is low, the filling performance of the airflow cut tobacco drying device is good and the aroma loss is large are solved, and the original aroma of tobacco, the filling value performance of cut tobacco, the moisture content of the cut tobacco and the like are considered.
The present invention has been made to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art, develop a built-in clapboard type hot air low-speed convection type cut tobacco drying device, realize the uniform heating mode of the hot air low-speed from bottom to top on tobacco materials from top to bottom, effectively keep the fragrance of tobacco, simultaneously give consideration to the filling value of cut tobacco, improve the uniformity and accuracy of cut tobacco drying, achieve the aim of effectively improving the cut tobacco drying effect, and have obvious practical significance for promoting the development of cut tobacco drying processing technology.
The purpose of the utility model is realized by the following technical scheme.
The utility model provides a built-in clapboard type hot air low-speed convection type cut tobacco drying device, which comprises a combustion furnace 1, a fixed bed 7 and a feeding device 3;
the upper part of the side wall of the fixed bed 7 is provided with a feed inlet 71 which is connected with a feed device 3 through a feed inclined tube 5,
the lower part of the side wall of the fixed bed 7 is provided with an air inlet 72 which is connected with the combustion furnace 1 through a hot air pipeline 2;
the top of the fixed bed 7 is provided with an air outlet 73 which is connected with a moisture exhaust air pipe 10;
the bottom of the fixed bed 7 is provided with a discharge hole 74 which is connected with a discharge conveying device 9 through a discharge pipe 12;
the upper part of the inside of the fixed bed 7 is provided with a circumferential loosening device 6 which is connected with the inclined feeding pipe 5;
the inner wall of the fixed bed 7 is provided with a plurality of partition plates 75 extending obliquely downward toward the inside of the fixed bed 7, and the plurality of partition plates 75 are arranged in order along the axial direction.
Preferably, the feed chute 5 has a feed airlock 4 thereon; the discharge pipe 12 is provided with a discharge airlock 8; and the moisture exhaust air pipe 10 is provided with a moisture exhaust valve 11.
Preferably, one of the partition plates 75 extends inward from only one half of the circumferential inner wall of the fixed bed 7, and the upper and lower adjacent partition plates 75 are alternately arranged left and right.
Preferably, the fixed bed 7 includes a middle cylindrical body and tapered cones at upper and lower ends, and the air inlet 72 is located at the tapered cone at the lower part of the fixed bed 7.
Preferably, the feed device 3 is arranged directly above the feed airlock 4.
Preferably, the angle between the hot air pipeline 2 and the central axis of the fixed bed 7 is 30-60 degrees.
Preferably, the angle of the partition plate 75 to the central axis of the fixed bed 7 is-45 to-30. Here, the positive and negative of two angles mean: the angle of the obliquely upward hot air duct 2 is positive and the angle of the obliquely downward partition plate 75 is negative.
Preferably, the speed of hot air entering the fixed bed 7 through the hot air pipeline 2 is relatively low, the speed of the hot air is adjustable within the range of 0-4 m/s, and the regulation and control precision is 0.10 m/s.
Preferably, the temperature of hot air entering the fixed bed 7 through the hot air pipeline 2 is adjustable within the range of 110-150 ℃, and the regulation and control precision is 0.10 ℃.
Preferably, the tobacco entering the feeding device 3 can be one or a mixture of several of tobacco leaves, tobacco stems, thin slices, cut tobacco, cut stems, thin slices and the like.
The operation method of the hot air low-speed convection type cut tobacco drying device comprises the following steps:
A. hot air heated in the combustion furnace 1 enters the bottom of the fixed bed 7 through the hot air pipeline 2 through the air inlet 72, then flows upwards at a low speed along the fixed bed 7, and finally passes through the air outlet 73 and is discharged out of the fixed bed 7 through the moisture exhaust air pipe 10;
B. the tobacco material enters the feeding inclined tube 5 through the feeding device 3, enters the circumferential loosening device 6 through the feeding hole 71, is loosened and uniformly enters the fixed bed 7 under the action of the circumferential loosening device 6, slowly falls along the fixed bed 7 due to the fact that the gravity of the tobacco is larger than the buoyancy under the action of upward hot air, and finally enters the discharging tube 12 through the discharging hole 74 and is discharged out of the fixed bed 7;
C. the tobacco material is dried in the fixed bed 7 for a tobacco drying time and at a tobacco drying temperature, and proper hot air temperature and speed are selected for matching according to the conditions of the moisture and the flow of the tobacco material inlet and the moisture of the tobacco material outlet, so that the tobacco drying effect and the corresponding process requirements are finally achieved.
Preferably, the inner wall of the fixed bed 7 is provided with a partition plate 75 extending obliquely downwards towards the inside of the fixed bed 7, the partition plate 75 can further reduce the falling speed of the tobacco materials, and the partition plates 75 alternating left and right simultaneously generate a turbulent flow effect on the hot air flowing upwards, so that the contact time between the rising hot air and the falling tobacco materials is prolonged, and the slow and low-temperature drying effect of the tobacco materials is ensured.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the hot air low-speed convection type cut tobacco drying device, tobacco materials enter the upper part of the fixed bed through the feeding hole, the feeding air lock and the feeding inclined tube and are loosened and uniformly moved downwards under the action of the peripheral loosening equipment and gravity, so that the tobacco materials are uniformly heated in the fixed bed, and the uniformity and the stability of moisture of the tobacco at a cut tobacco drying outlet are effectively improved.
2. The hot air low-speed convection type cut tobacco drying device adopts the modes of low speed and low temperature of hot air and longer cut tobacco drying time, and realizes the baking mode of slow baking of tobacco with small fire. Compared with the traditional airflow type cut tobacco drying device, the tobacco aroma-keeping device has better tobacco aroma-keeping effect, and the moisture content of the outlet tobacco has better stability; compared with the traditional roller cut-tobacco drying device, the tobacco filling performance is better, the dry end and the dry tail are less, and the tobacco is not contacted with a fixed bed and basically has no crumbling.
3. According to the hot air low-speed convection type cut tobacco drying device, the partition plates 75 which extend obliquely downwards and face the inside of the fixed bed 7 are arranged on the inner wall of the fixed bed 7, the number of the partition plates 75 is multiple, and the partition plates 75 are sequentially arranged along the axial direction. Preferably, one of the partition plates 75 extends inward from only one half of the circumferential inner wall of the fixed bed 7, and the upper and lower adjacent partition plates 75 are alternately arranged left and right. The partition plates 75 can further reduce the falling speed of the tobacco materials, and the partition plates 75 are arranged on the left side and the right side alternately to generate turbulence effect on the hot air flowing upwards, so that the contact time between the rising hot air and the falling tobacco materials is prolonged, the slow low-temperature drying effect of the tobacco materials is ensured, and the slow baking with small fire is realized.
4. The hot air low-speed convection type cut tobacco drying device can control the heating intensity and the heating time of tobacco in the fixed bed by adjusting the temperature and the speed of hot air, thereby achieving the purposes of effectively improving the cut tobacco drying effect and improving the quality and the stability of the cut tobacco drying process, and having better application value and practical significance.
5. The utility model also has the characteristics of simple structure, practical method, strong operability, small occupied space, easy field reconstruction and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of the hot air low-speed convection cut-tobacco drying device of the present invention.
Description of reference numerals: 1-a combustion furnace; 2-hot air pipeline; 3-feeding means; 4-feed airlock; 5-a feeding inclined tube; 6-circumferential loosening equipment; 7-fixed bed; 8-discharging airlock; 9-a discharge conveying device; 10-moisture removal air pipe; 11-moisture removal valve; 12-a discharge pipe; 71-a feed inlet; 72-air inlet; 73-an air outlet; 74-a discharge port; 75-a separator.
Detailed Description
The present invention is further described with reference to the drawings and examples, but the drawings and examples are not intended to limit the technical solutions of the present invention, and any changes or modifications made based on the teachings of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1, a hot air low-speed convection type cut tobacco drying device with a built-in clapboard comprises a combustion furnace 1, a hot air pipeline 2, a feeding device 3, a feeding airlock 4, a feeding inclined pipe 5, a circumferential loosening device 6, a fixed bed 7, a discharging airlock 8, a moisture exhaust air pipe 10 and a discharging pipe 12; one end of the hot air pipeline 2 is connected with the combustion furnace 1, and the other end of the hot air pipeline is introduced from the conical part at the bottom end of the fixed bed 7; the feeding device 3 is arranged right above the feeding airlock 4; the upper end of the feeding inclined tube 5 is connected with the feeding airlock 4, and the lower end of the feeding inclined tube 5 penetrates through the upper end of the fixed bed 7 and is connected with the circumferential loosening equipment 6; the upper part of the fixed bed 7 is connected with a discharge air pipe 10, and the lower part of the fixed bed 7 is connected with a discharge airlock 8; the lower part of the discharging air lock 8 is connected with a discharging conveying device 9.
The inner wall of the fixed bed 7 is provided with 4 partition plates 75 extending obliquely downward toward the inside of the fixed bed 7, and the plurality of partition plates 75 are arranged in order along the axial direction. One of the partition plates 75 extends inward from only a half of the circumferential inner wall of the fixed bed 7, and the upper and lower adjacent partition plates 75 are alternately arranged left and right. The angle between the hot air pipeline 2 and the central axis of the fixed bed 7 is 30 degrees; the angle of the partition plate 75 to the central axis of the fixed bed 7 is-45 °.
The diameter of the fixed bed 7 is 2m, and the height is 3 m; the wind speed of the hot wind entering the fixed bed 7 through the hot wind pipeline 2 is 3.0m/s, and the temperature of the hot wind is 140 ℃; the opening of the moisture discharge valve 11 is 50 percent; the flow rate of the tobacco material entering the feeding device 3 is 2000 kg/h.
The experimental object is 5000kg cut tobacco shreds in a tobacco production line of a certain cigarette factory, the moisture content of the tobacco shreds is 22.0%, the standard requirement of the moisture content of the dried tobacco shreds is 13.0 +/-1.0%, and the filling value of the tobacco shreds is more than or equal to 4.2g/cm3. The cut tobacco shreds are divided into two equal parts and are respectively dried by adopting the traditional roller tobacco shred drying device and the utility modelCut tobacco is dried, and the results after treatment are shown in Table 1.
TABLE 1 comparative analysis of the quality of cut tobacco after baking based on the conventional roller cut tobacco baking device and the present invention
As can be seen from Table 1, compared with the conventional roller cut tobacco drying device, after the cut tobacco is dried by adopting the cut tobacco drying device, the central value of the moisture content of the cut tobacco is closer to the standard requirement, and the tolerance range is narrower, so that the stability of the moisture content of the cut tobacco is better; the cut tobacco drying filling value is higher, the cut tobacco crushing amount is less, and the sensory quality scores of the cut tobacco are basically the same. Therefore, compared with the traditional roller cut tobacco drying device, the hot air low-speed convection cut tobacco drying device has obvious advantages in the aspects of improving the quality stability in the cut tobacco drying process, improving the cut tobacco filling performance, reducing the cut tobacco raw material consumption in the cut tobacco drying process and the like.
Example 2
Example 1 was repeated with the following differences: the wind speed of the hot wind entering the fixed bed 7 through the hot wind pipeline 2 is 2.5m/s, and the temperature of the hot wind is 145 ℃; the opening of the moisture exhaust valve 11 is 60 percent.
The experimental object is 5000kg cut tobacco shreds in a tobacco production line of a certain cigarette factory, the moisture content of the tobacco shreds is 21.6%, the standard requirement of the moisture content of the dried tobacco shreds is 13.0 +/-1.0%, and the filling value of the tobacco shreds is more than or equal to 4.2g/cm3. The cut tobacco shreds are divided into two equal parts, the cut tobacco shreds are respectively dried by adopting a traditional airflow tobacco shred drying device and the method, and the results after treatment are compared and shown in a table 2.
TABLE 2 comparative analysis of the quality of cut tobacco after baking based on the conventional air-flow cut tobacco baking device and the present invention
As can be seen from Table 2, compared with the conventional air-flow cut tobacco drying device, after the cut tobacco is dried by adopting the cut tobacco drying device, the central value of the moisture content of the cut tobacco is closer to the standard requirement, and the tolerance range is narrower, so that the stability of the moisture content of the cut tobacco is better; the tobacco shred adopting the utility model has higher sensory quality score, which shows that the utility model has better function of keeping the original fragrance of the tobacco; the shredded tobacco of the utility model has less broken tobacco and less filling performance. Therefore, compared with the traditional air flow cut tobacco drying device, the hot air low-speed convection cut tobacco drying device has obvious advantages in the aspects of improving the quality stability in the cut tobacco drying process, keeping the tobacco fragrance, improving the sensory quality of the cut tobacco, reducing the consumption of cut tobacco raw materials in the cut tobacco drying process and the like.
By combining the embodiment 1 and the embodiment 2, the hot air low-speed convection cut tobacco drying device can make up the respective defects of the two traditional cut tobacco drying devices, namely the roller cut tobacco drying device and the airflow cut tobacco drying device, can effectively improve the uniformity and the accuracy of cut tobacco drying, can effectively keep the herbal fragrance of tobacco, and simultaneously considers the cut tobacco filling value, thereby effectively improving the drying effect of the cut tobacco drying.
Claims (8)
1. A hot air low-speed convection type cut tobacco drying device with a built-in clapboard is characterized by comprising a combustion furnace (1), a fixed bed (7) and a feeding device (3);
the upper part of the side wall of the fixed bed (7) is provided with a feed inlet (71) which is connected with a feed device (3) through a feed inclined tube (5),
the lower part of the side wall of the fixed bed (7) is provided with an air inlet (72) which is connected with the combustion furnace (1) through a hot air pipeline (2);
the top of the fixed bed (7) is provided with an air outlet (73) which is connected with a moisture exhaust air pipe (10);
the bottom of the fixed bed (7) is provided with a discharge hole (74) which is connected with a discharge conveying device (9) through a discharge pipe (12);
the upper part of the inside of the fixed bed (7) is provided with a circumferential loosening device (6) which is connected with the inclined feeding pipe (5);
the inner wall of the fixed bed (7) is provided with a plurality of baffle plates (75) which extend obliquely downwards and face the inside of the fixed bed (7), and the baffle plates (75) are sequentially arranged along the axial direction.
2. A hot air slow-convection type cut-tobacco drying device according to claim 1, wherein the feeding inclined tube (5) is provided with a feeding air lock (4); the discharge pipe (12) is provided with a discharge airlock (8); and the moisture exhaust air pipe (10) is provided with a moisture exhaust valve (11).
3. A hot air slow-convection type cut-tobacco drying device according to claim 1, wherein one of said partition plates (75) extends inward from only a half of the circumferential inner wall of said fixed bed (7), and two adjacent upper and lower partition plates (75) are alternately arranged left and right.
4. A hot air low-speed convection type cut-tobacco drying device according to claim 1, wherein the fixed bed (7) comprises a middle cylindrical main body and tapered cones at upper and lower ends, and the air inlet (72) is located at the tapered cone at the lower part of the fixed bed (7).
5. A hot air low-velocity convection cut-tobacco drying device according to claim 1, characterized in that the feeding device (3) is arranged right above the feeding airlock (4); the angle between the hot air pipeline (2) and the central axis of the fixed bed (7) is 30-60 degrees; the angle between the clapboard (75) and the central axis of the fixed bed (7) is-45 degrees to-30 degrees.
6. The hot-air low-speed convection type cut-tobacco drying device according to claim 1, wherein the speed of hot air entering the fixed bed (7) through the hot-air pipeline (2) is relatively low, the speed of hot air is adjustable within the range of 0-4 m/s, and the adjustment and control precision is 0.10 m/s.
7. The hot-air low-speed convection type cut-tobacco drying device according to claim 1, wherein the temperature of hot air entering the fixed bed (7) through the hot-air pipeline (2) is adjustable within a range of 110-150 ℃, and the adjustment precision is 0.10 ℃.
8. A hot air low-speed convection type cut tobacco drying device according to claim 1, wherein the tobacco entering the feeding device (3) can be one or a mixture of several of tobacco leaves, tobacco stems, thin sheets, cut tobacco, cut stems, thin sheets and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306222.4U CN216059155U (en) | 2021-09-23 | 2021-09-23 | Built-in baffle type hot air low-speed convection type cut tobacco drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122306222.4U CN216059155U (en) | 2021-09-23 | 2021-09-23 | Built-in baffle type hot air low-speed convection type cut tobacco drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216059155U true CN216059155U (en) | 2022-03-18 |
Family
ID=80678297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122306222.4U Active CN216059155U (en) | 2021-09-23 | 2021-09-23 | Built-in baffle type hot air low-speed convection type cut tobacco drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216059155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712237A (en) * | 2021-09-23 | 2021-11-30 | 云南中烟工业有限责任公司 | Built-in partition plate type hot air low-speed convection type cut tobacco drying device and operation method thereof |
-
2021
- 2021-09-23 CN CN202122306222.4U patent/CN216059155U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712237A (en) * | 2021-09-23 | 2021-11-30 | 云南中烟工业有限责任公司 | Built-in partition plate type hot air low-speed convection type cut tobacco drying device and operation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104677054B (en) | It is inverted the low temperature fluidized bed drying equipment of microwave | |
| CN104720094B (en) | A kind of tobacco online expansion and drying device of adopting carries out tobacco online expansion and dry method | |
| CN216059155U (en) | Built-in baffle type hot air low-speed convection type cut tobacco drying device | |
| CN206518140U (en) | Biomass fuel flue-cured tobacco special furnace | |
| CN205641901U (en) | Be suitable for rapid draing and collection device of ferric phosphate production | |
| CN105455186A (en) | Rotary thin-plate stepped tobacco shred drying system | |
| CN204377891U (en) | A kind of hot blast fragment drying plant | |
| CN201846776U (en) | Equipment for drying cut tobacco by stages | |
| CN205233437U (en) | Big moisture tobacco leaf drying device | |
| CN216205089U (en) | Sectional type hot air low-speed convection type cut tobacco drying device | |
| CN113712237A (en) | Built-in partition plate type hot air low-speed convection type cut tobacco drying device and operation method thereof | |
| CN203676100U (en) | Online cut tobacco expanding and drying device | |
| CN113654337B (en) | Sectional type hot air low-speed convection type silk drying device and operation method thereof | |
| CN201057779Y (en) | Concurrent rumble tobacco oven capable of reducing over-dried phenomena | |
| CN205635526U (en) | Drum -type frying pan | |
| CN105716404A (en) | Drying device for cement raw slurry | |
| CN102599622B (en) | High-moisture tobacco material drying method and drying tower | |
| CN210642252U (en) | Roller water-removing device | |
| CN106490194B (en) | A kind of floated hot air water-removing method of tealeaves | |
| CN107904004A (en) | A kind of energy-saving soybean tempering tower that can be docked with cloud platform | |
| CN208300857U (en) | A kind of efficient grain dryer | |
| CN201430907Y (en) | Airflow drying equipment for tobacco material | |
| CN219531558U (en) | Drying device | |
| CN205980718U (en) | High -efficient drum dryer | |
| CN204594099U (en) | The preliminary drying unit of pulse straight tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |