CN220403071U - Pneumatic drying equipment - Google Patents
Pneumatic drying equipment Download PDFInfo
- Publication number
- CN220403071U CN220403071U CN202321932644.5U CN202321932644U CN220403071U CN 220403071 U CN220403071 U CN 220403071U CN 202321932644 U CN202321932644 U CN 202321932644U CN 220403071 U CN220403071 U CN 220403071U
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- expansion joint
- section
- drying tower
- drying
- transition section
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- 238000001035 drying Methods 0.000 title claims abstract description 97
- 230000007704 transition Effects 0.000 claims abstract description 28
- 238000003466 welding Methods 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims 1
- 241000208125 Nicotiana Species 0.000 abstract description 60
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 60
- 238000005054 agglomeration Methods 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 4
- 238000004804 winding Methods 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 206010010071 Coma Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 206010024796 Logorrhoea Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses air flow drying equipment, which comprises a drying tower, wherein an inlet end at one side of the drying tower is connected with an expansion joint, a feeding air lock is connected to a feeding port at the top end of the middle section of the expansion joint, the part of the expansion joint between the feeding air lock and the drying tower is a feeding section, the feeding section of the expansion joint comprises a conveying section and a transition section which are sequentially connected along the feeding direction, the expansion joint is connected with the inlet end of the drying tower through the transition section, the conveying section of the expansion joint is a horizontal conveying section which extends horizontally, the height position of the inlet end of the drying tower is higher than that of the conveying section of the expansion joint, and the transition section of the expansion joint is an arc transition section. Compared with the prior art, the utility model has the following advantages: the motion state that the cut tobacco enters the drying tower from the expansion joint is improved, so that the stability of the cut tobacco in the air flow drying process is improved, meanwhile, the friction between the cut tobacco and the wall of the drying tower in the drying process is reduced, the winding, agglomeration and breakage of the cut tobacco are reduced, and the consumption of the cut tobacco is reduced.
Description
Technical Field
The utility model relates to cigarette processing equipment, in particular to airflow drying equipment.
Background
The drying process is a key process in the cigarette processing process, at present, a drum type drying mode and an airflow type drying mode are commonly adopted in the tobacco industry, and along with the promotion of the tar reduction and harm reduction of cigarettes and the high-quality development of the tobacco industry, the airflow type drying process has unique advantages, is widely applied, and is mainly characterized in that the cut tobacco filling value after drying is high, the release amount of the tar amount of smoke is reduced while the cost and consumption are controlled, and the harm is reduced.
At present, the air-flow type tobacco online expansion drying equipment used in the domestic tobacco industry mainly comprises pipe type air-flow drying equipment, such as HXD of Dickinson-LEGG company and HDT of Hauni company; the tubular tower type air flow drying device is such as SH9 series air flow tobacco shred dryer manufactured by domestic tobacco machine company, and CTD tobacco shred air flow drying device of Comas company.
The CTD tobacco shred airflow drying equipment of Comas company is characterized in that the process gas is heated by a combustion furnace and is divided into two paths, one path flows from the bottom of a drying tower to the top of the drying tower, and the other path is taken as a medium to carry shredded tobacco shreds into the drying tower, and meanwhile, the tobacco shreds are preheated and expanded.
The heat in the superheated steam and the tobacco steam is used for vaporizing the moisture in the tobacco shreds, the moisture volatilizes from the tobacco shreds and then enters the superheated steam, the tobacco shreds and the superheated steam reach equilibrium at the tangential separator, the vapor pressure of the steam is equal, heat and substance exchange do not occur any more, and the tobacco shreds are sent to the discharging vibration groove by the discharging air lock.
The expansion joint that adopts at present gets into the drying tower by adopting the mode of horizontal feeding, the pipe tobacco receives the effect of expansion joint air current in the expansion joint, pipe tobacco pressure boost increases temperature humidification to have certain horizontal velocity, pipe tobacco in the expansion joint gets into the drying tower with the mode of level, can form a curtain at expansion joint and drying tower interface department, the interference is by the ascending superheated steam operation of drying tower bottom, pipe tobacco in the entering drying tower also can bias to one side of drying tower, the superheated steam flow in the drying tower can form the disorder, simultaneously, can increase the friction of pipe tobacco and drying tower wall in the pneumatic drying process, pipe tobacco easily produces the garrulous and twine and consequently leads to the rising of consumption, because the disorder of air current, lead to the fact the twining of pipe tobacco, easily cause the inhomogeneous of pipe tobacco moisture content in the pneumatic drying process, thereby influence pipe tobacco quality and product quality.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides air flow drying equipment for improving the motion state of tobacco shreds entering a drying tower from an expansion joint, so that the stability of the tobacco shreds in the air flow drying process is improved, and meanwhile, the friction between the tobacco shreds and the wall of the drying tower in the drying process is reduced, so that the winding, agglomeration and breakage of the tobacco shreds are reduced, and the consumption of the tobacco shreds is reduced.
The utility model is realized by the following technical scheme:
the utility model provides an air current drying equipment, includes the drying tower, drying tower one side entry end is connected with the expansion joint, and the feed inlet department on expansion joint middle section top is connected the feed airlock, and the expansion joint is located the position between feed airlock and the drying tower and is the feed section, the feed section of expansion joint includes conveying section and changeover portion that connect gradually along the feeding direction, and the expansion joint is connected with drying tower entry end through the changeover portion, and the conveying section of expansion joint is the horizontal conveying pipeline section of horizontal extension, and the height position of drying tower entry end is higher than the height position of the conveying section of expansion joint, and the changeover portion of expansion joint is the arc changeover portion.
As a preferable scheme of the device, the included angle between the connecting line of the starting point and the end point of the central axis of the transition section of the expansion joint and the horizontal plane is 30-60 degrees.
As a preferable scheme of the device, the ratio of the arc length of the central axis of the transition section of the expansion joint to the length of the conveying section is 0.7-1.0.
As a preferred scheme of the device, the pipe diameter of the transition section and the pipe diameter of the conveying section of the expansion joint are the same.
As a preferable scheme of the equipment, the transition section and the conveying section of the expansion joint are both stainless steel pipes or alloy pipes.
As a preferable scheme of the equipment, the transition section and the conveying section of the expansion joint and the transition section and the drying tower of the expansion joint are fixedly connected in a welding mode.
Compared with the prior art, the utility model has the following advantages:
according to the airflow drying equipment provided by the utility model, the transition section connected with the expansion joint and the drying tower is designed into the arc-shaped transition section, and the height position of the inlet end of the drying tower is higher than that of the conveying section of the expansion joint, so that the cut tobacco from the expansion joint enters the drying tower in an inclined upward manner along with the airflow, the moving state of the cut tobacco entering the drying tower from the expansion joint is improved, the horizontal speed of the cut tobacco entering the drying tower is reduced, the cut tobacco is distributed more uniformly under the upward airflow action at the bottom of the drying tower after entering the drying tower, the airflow disturbance in the drying tower is reduced, the continuity of cut tobacco discharging is improved, the consistency of the moisture content in the cut tobacco drying and dewatering process is improved, the winding, agglomeration and breakage of the cut tobacco in the airflow drying process are reduced, the stability of product quality indexes in the production process is ensured, and the consumption of the cut tobacco is reduced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Reference numerals in the drawings: 1 a drying tower; 2, an expansion joint; 3, feeding air lock; 4 tangential separator; 5, discharging air lock; 6, a centrifugal fan; 7, heating a furnace; 8, conveying sections; 9, a transition section; 10 an expansion fan.
Detailed Description
The following describes in detail the examples of the present utility model, which are implemented on the premise of the technical solution of the present utility model, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present utility model is not limited to the following examples.
Referring to fig. 1, this embodiment discloses an airflow drying device, including drying tower 1, drying tower 1 one side entry end is connected with expansion joint 2, feed airlock 3 is connected to the feed inlet department on expansion joint 2 middle section top, drying tower 1 top exit end is connected with tangential separator 4 through material pipeline, tangential separator 4 bottom exit linkage has ejection of compact airlock 5, realize separation of pipe tobacco and superheated steam through tangential separator 4, the pipe tobacco after the separation gets into ejection of compact airlock 5, the superheated steam after the separation communicates with heating furnace 7 through centrifugal fan 6, heating furnace 7 communicates with drying tower 1 bottom through the superheated steam pipe.
The expansion joint 2 is located the position between feed airlock 3 and the drying tower 1 and is the feed section, and the feed section of expansion joint 2 includes conveying section 8 and changeover portion 9 that connect gradually along the feeding direction, and expansion joint 2 is connected with drying tower 1 entry end through changeover portion 9, and conveying section 8 of expansion joint 2 is the horizontal conveying pipe section that the level extends, and the height position of drying tower 1 entry end is higher than the height position of conveying section 8 of expansion joint 2, and changeover portion 9 of expansion joint 2 is the arc changeover portion.
Wherein, the included angle between the connecting line of the starting point and the end point of the central axis of the transition section 9 of the expansion joint 2 and the horizontal plane is 30-60 degrees. The transition section 9 of the expansion joint 2 has the same pipe diameter as the conveying section 8. The ratio of the arc length of the central axis of the transition section 9 of the expansion joint 2 to the length of the conveying section 8 is 0.7-1.0. The transition section 9 and the conveying section 8 of the expansion joint 2 are both stainless steel pipes or alloy pipes. The transition section 9 of the expansion joint 2 and the conveying section 8, and the transition section 9 of the expansion joint 2 and the drying tower 1 are fixedly connected in a welding mode, so that the surface of a welding part is smooth, the sealing performance is good, and no leakage point exists.
During operation, cut tobacco is sent into the expansion joint 2 from the feeding airlock 3, steam is sent into the expansion joint 2 through the expansion fan 10 by the jet steam pipe, and enters the drying tower 1 through the expansion joint 2 under the action of the air flow of the expansion fan 10, in the drying tower 1, the cut tobacco and the superheated steam are dried after absorbing heat in the superheated steam in the process of rising in the tower, and in the drying process, the superheat degree of the superheated steam is reduced along with the reduction of the moisture of the cut tobacco; then the cut tobacco and the superheated steam are subjected to gas-material separation through a tangential separator 4, the separated superheated steam is sent to a heating furnace 7 through a centrifugal fan 6 to be heated, and the heated superheated steam enters an expansion joint 2 and a drying tower 1 again for the drying and recycling of the cut tobacco; the separated tobacco shreds are uniformly sent to a discharging vibration groove by a discharging airlock 5.
According to the embodiment, the transition section 9 connected with the expansion joint 2 and the drying tower 1 is designed into an arc-shaped transition pipe section, the height position of the inlet end of the drying tower 1 is higher than that of the conveying section 8 of the expansion joint 2, cut tobacco enters the drying tower 1 through the arc-shaped transition pipe section with a certain angle, the horizontal running speed is converted into two running vectors of the upward running speed and the horizontal running speed, after the cut tobacco enters the drying tower 1, under the action of high-speed superheated steam at the bottom in the drying tower 1, the cut tobacco can quickly acquire acceleration to run towards the top of the drying tower 1, the cut tobacco cannot deviate to one side of the drying tower 1, the movement state that the cut tobacco enters the drying tower 1 from the expansion joint 2 is improved, the cut tobacco is distributed more uniformly under the action of the upward airflow at the bottom after entering the drying tower 1, the airflow disorder in the drying tower 1 is reduced, the continuity of cut tobacco discharging is improved, the consistency of the cut tobacco in the drying and dewatering process is improved, the cut tobacco in the airflow drying process is reduced, the winding, the agglomeration and the breakage are reduced, the stability of the product quality index in the production process is guaranteed, and the consumption is reduced.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. The utility model provides an air current drying equipment, includes the drying tower, drying tower one side entry end is connected with the expansion joint, and the feed airlock is connected to the feed inlet department on expansion joint middle section top, and the expansion joint is located the position between feed airlock and the drying tower and is the feed section, its characterized in that: the feeding section of expansion joint includes conveying section and changeover portion that connect gradually along the feeding direction, and the expansion joint is connected with the drying tower entry end through the changeover portion, and the conveying section of expansion joint is the horizontal conveying pipe section that extends horizontally, and the height position of drying tower entry end is higher than the height position of the conveying section of expansion joint, and the changeover portion of expansion joint is the arc changeover portion.
2. A pneumatic drying apparatus according to claim 1, wherein: the included angle between the connecting line of the starting point and the end point of the central axis of the transition section of the expansion joint and the horizontal plane is 30-60 degrees.
3. A pneumatic drying apparatus according to claim 1, wherein: the ratio of the arc length of the central axis of the transition section of the expansion joint to the length of the conveying section is 0.7-1.0.
4. A pneumatic drying apparatus according to claim 1, wherein: the transition section of the expansion joint is the same as the pipe diameter of the conveying section.
5. A pneumatic drying apparatus according to claim 1, wherein: the transition section and the conveying section of the expansion joint are both stainless steel pipes or alloy pipes.
6. An air drying apparatus as set forth in claim 5, wherein: and the transition section and the conveying section of the expansion joint and the transition section and the drying tower of the expansion joint are fixedly connected in a welding mode respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321932644.5U CN220403071U (en) | 2023-07-21 | 2023-07-21 | Pneumatic drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321932644.5U CN220403071U (en) | 2023-07-21 | 2023-07-21 | Pneumatic drying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220403071U true CN220403071U (en) | 2024-01-30 |
Family
ID=89644247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321932644.5U Active CN220403071U (en) | 2023-07-21 | 2023-07-21 | Pneumatic drying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220403071U (en) |
-
2023
- 2023-07-21 CN CN202321932644.5U patent/CN220403071U/en active Active
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