CN111248478A - Tobacco sheet moisture online control device - Google Patents
Tobacco sheet moisture online control device Download PDFInfo
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- CN111248478A CN111248478A CN202010182766.1A CN202010182766A CN111248478A CN 111248478 A CN111248478 A CN 111248478A CN 202010182766 A CN202010182766 A CN 202010182766A CN 111248478 A CN111248478 A CN 111248478A
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- China
- Prior art keywords
- microwave
- tobacco
- control device
- tobacco sheet
- drying cavity
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B9/00—Control of the moisture content of tobacco products, e.g. cigars, cigarettes, pipe tobacco
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- Drying Of Solid Materials (AREA)
Abstract
The invention discloses an online control device for tobacco sheet moisture, which comprises a microwave drying cavity, a microwave source for generating microwaves and a microwave source power supply, wherein the microwave drying cavity is used for drying tobacco sheets; the microwave drying cavity is provided with a feeding hole and a discharging hole, a conveying mechanism for conveying tobacco sheets is arranged in the microwave drying cavity, and the conveying mechanism is connected with the feeding hole and the discharging hole; and a humidity detector for detecting the humidity of the tobacco sheets is arranged at the discharge port, and the humidity detector is used for controlling the microwave source to increase the output power when detecting that the humidity of the tobacco sheets is greater than a preset value. The tobacco sheet moisture online control device provided by the invention can be used for drying the tobacco sheets while conveying the tobacco sheets, so that the online monitoring and control of the humidity of the tobacco sheets are realized, the frequent roller winding in the production process is avoided, and the taste of finished cigarettes is ensured.
Description
Technical Field
The invention relates to the field of tobacco machinery, in particular to an online control device for moisture of tobacco sheets.
Background
In recent years, with the rapid rise of heating non-combustible cigarette products, tobacco enterprises at home and abroad start the development work of heating non-combustible cigarette products. As a source of cigarette smoke, the development of a smoking segment cigarette rod is a key for the development of a non-combustion type cigarette. The cigarette rod raw material of the heating non-combustible cigarette is a novel tobacco sheet manufactured by a paper making method, the sheet is cut into strips by pressing and then gathered into bundles, and finally a layer of cigarette paper is wrapped to form the cigarette rod.
The novel tobacco sheet has high content of components such as glycerin and the like, so the novel tobacco sheet has strong water absorption. According to research, the moisture content of qualified sheet paper rolls with the moisture content of 10% can be increased to 30% when the qualified sheet paper rolls are placed in a natural environment with high humidity for half an hour, and the problems that the finished product cigarette has changed smoking taste and is frequently wound on rollers in the production process and the like are caused when the moisture content is too high. Therefore, it is necessary to develop a device capable of controlling the moisture of the thin sheet on-line.
Disclosure of Invention
The invention aims to provide an online control device for the moisture of tobacco sheets, which can be used for drying the tobacco sheets while conveying the tobacco sheets, realizing online monitoring control and control of the humidity of the tobacco sheets, avoiding frequent roller winding in the production process and ensuring the taste of finished cigarettes.
In order to achieve the purpose, the invention provides an online detection device for moisture of tobacco sheets, which comprises a microwave drying cavity, a microwave source for generating microwaves and a microwave source power supply, wherein the microwave drying cavity is used for drying the tobacco sheets;
the microwave drying cavity is provided with a feeding hole and a discharging hole, a conveying mechanism for conveying tobacco sheets is arranged in the microwave drying cavity, and the conveying mechanism is connected with the feeding hole and the discharging hole;
and a humidity detector for detecting the humidity of the tobacco sheets is arranged at the discharge port, and the humidity detector is used for controlling the microwave source to increase the output power when detecting that the humidity of the tobacco sheets is greater than a preset value.
Optionally, a temperature detector for detecting the temperature of the tobacco sheets is further disposed at the discharge port, and the temperature detector is configured to control the microwave source to reduce the output power when the temperature of the tobacco sheets is detected to be greater than a preset value.
Optionally, the conveying mechanism is a conveying roller way arranged in the microwave drying cavity.
Optionally, the rollgang comprises an upper rollgang and a lower rollgang arranged in parallel.
Optionally, the microwave source is specifically a microwave magnetron disposed on one side of the microwave drying cavity, and the microwave magnetron is uniformly distributed along the sidewall of the microwave drying cavity from top to bottom.
Optionally, a conical protrusion is arranged at the top of the microwave drying cavity, the conical protrusion is connected with a negative pressure pipeline, and the negative pressure pipeline is provided with a pressure regulating valve.
Optionally, the feed inlet is provided with a feed end microwave suppressor, and the discharge outlet is provided with a discharge end microwave suppressor.
Optionally, all the conveying rollers of the conveying roller way are driven rollers, and a paper guide roller for guiding the tobacco sheets is arranged at the discharge port.
Optionally, the humidity detector and the temperature detector are arranged on two sides of the paper guide roller, and the temperature detector is arranged on one side, close to the discharge port, of the paper guide roller.
Optionally, the rotation speed of the paper guiding roller is adjustable, and the rotation speed of the paper guiding roller is reduced when the humidity of the tobacco sheet is greater than a preset value and the temperature of the tobacco sheet is greater than the preset value.
Compared with the background technology, the tobacco sheet moisture online control device provided by the invention conveys the tobacco sheet from the feed inlet to the microwave drying cavity through the conveying mechanism, and the microwave source power supply is used for supplying power to the microwave source to excite the microwave to dry the tobacco sheet, and then the dried tobacco sheet is output from the discharge outlet; the humidity of the tobacco sheets is monitored on line through the humidity detector, when the humidity is higher than a preset value, such as 10%, the humidity is fed back to the microwave source to increase the output power, the humidity of the tobacco sheets is ensured to be in a proper range, roller winding is avoided in the conveying process, and the taste of finished cigarettes is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of an on-line moisture control device for tobacco sheets according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a sectional view B-B of fig. 1.
Wherein:
1-negative pressure pipeline, 2-pressure regulating valve, 3-microwave drying cavity, 31-feeding inlet, 32-discharging outlet, 4-magnetron power box, 5-feeding end microwave suppressor, 6-humidity detector, 7-upper roller way, 8-lower roller way, 9-temperature detector, 10-discharging end microwave suppressor, 11-microwave magnetron, 12-magnetron shield and 13-paper guiding roller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, 2 and 3, fig. 1 is a schematic view of an on-line moisture control device for tobacco sheets according to an embodiment of the present invention, fig. 2 is a sectional view taken along a line a-a of fig. 1, fig. 3 is a sectional view taken along a line B-B of fig. 1, and a two-dot chain line with an arrow in fig. 1 indicates a roll of the tobacco sheets.
The tobacco sheet moisture online control device provided by the invention comprises a microwave drying cavity 3, a microwave source for generating microwaves and a microwave source power supply for supplying power to the microwave source to excite the microwaves for drying the tobacco sheets; the microwave drying cavity 3 is provided with a feeding hole 31 and a discharging hole 32, a conveying mechanism for conveying tobacco sheets is arranged in the microwave drying cavity, the conveying mechanism is connected with the feeding hole 31 and the discharging hole 32 and is used for conveying the tobacco sheets entering the microwave drying cavity 3 from the feeding hole 31 to the discharging hole 32, and the tobacco sheets are dried and dehumidified in the microwave drying cavity 3 by means of microwaves generated by a microwave source during conveying. In order to ensure the drying effect, the humidity detector 6 is further arranged at the discharge port 32, the moisture in the tobacco sheets is monitored and controlled on line through the humidity detector 6, when the humidity of the tobacco sheets is too high, namely the moisture content is higher than a preset value, the microwave source is controlled to increase the output power, the drying efficiency of the tobacco sheets is improved, and the moisture in the tobacco sheets is controlled on line.
The invention provides an on-line control device for the moisture of tobacco sheets, which is described in more detail with reference to the accompanying drawings and specific embodiments.
In a specific embodiment provided by the present invention, the microwave drying cavity 3 is a square cavity, the feed inlet 31 is disposed on one side of the bottom of the microwave drying cavity 3, the discharge outlet 32 is disposed on one side of the top of the microwave drying cavity 3, and the feed inlet 31 and the discharge outlet 32 are generally disposed on two opposite sides of the microwave drying cavity 3, so as to achieve a relatively long conveying distance, so that the tobacco sheets can stay in the microwave drying cavity 3 for a long time when running at a relatively high conveying speed, and the drying efficiency of the tobacco sheets is improved. Meanwhile, in order to avoid unqualified drying of the tobacco sheets, a humidity detector 6 for detecting the humidity of the tobacco sheets is further arranged at the discharge port 32 of the microwave drying cavity 3, when the humidity is too high, the output power of a microwave source is adjusted and increased, the drying of the tobacco sheets is accelerated, and then the online monitoring control of the moisture of the tobacco sheets is realized.
Further, in order to avoid the over-high drying power resulting in the over-low moisture and over-high temperature of the tobacco sheet, a temperature detector 9 for detecting the tobacco sheet is further arranged at the discharge port 32 of the microwave drying cavity 3; when the temperature detection detects that the temperature of the tobacco sheet at the material opening 32 is too high, the drying power of the microwave source is over high, and the humidity of the tobacco sheet is maintained within a proper range by controlling the microwave source to reduce the output power. The moisture detector 6 and the temperature detector 9 are conventional detecting devices, and the structure, operation and control principle of the two are not described in detail here.
The temperature detector 9 and the humidity detector 6 can control the power of the microwave source by transmitting the detected temperature value and humidity value to the control center of the microwave source to realize automatic regulation and control, and the regulation is realized by comparing the corresponding relations of the temperature, humidity and power which are stored in the control center in advance; and a field worker can read the temperature value and the humidity value to manually regulate and control the output power of the microwave source according to experience.
In a specific embodiment provided by the present invention, the conveying mechanism specifically adopts a form of a conveying roller way, and the conveying roller way is specifically provided with two layers, including an upper roller way 7 located at the upper part of the microwave drying cavity 3 and a lower roller way 8 located at the lower part of the microwave drying cavity 3. The upper roller way 7 and the lower roller way 8 are arranged in parallel, the upper roller way 7 and the discharge port 32 are located at the same height, and the lower roller way 8 and the feed port 31 are located at the same height. In addition, the heights of the feed port 31 and the discharge port 32 can be flexibly arranged according to requirements.
Particularly, the upper roller way 7 and the lower roller way 8 are arranged in the microwave drying cavity 3 in a one-to-one alignment manner from top to bottom. Therefore, the tobacco sheets enter the microwave oven cavity from the feeding hole 31 of the bottom layer and firstly pass through the first conveying roller of the lower roller bed 8, then pass through the first conveying roller of the upper roller bed 7, then pass through the second conveying roller … … of the lower roller bed 8 and finally are output from the last conveying roller of the upper roller bed 7 and the discharging hole 32. The winding mode when the upper roller way 7 and the lower roller way 8 are alternated is adopted, so that the path of the tobacco sheet in the microwave drying cavity 3 can be increased, and the sufficient time for drying the tobacco sheet to the proper humidity is ensured. The conveying rollers of the upper roller way 7 and the lower roller way 8 can be arranged in a mode of being aligned one by one up and down and also can be arranged in a staggered mode, and the tobacco sheets are wound between the adjacent conveying rollers in a V-shaped mode. Conveying mechanism also can adopt conveyor belt mechanism, only adopts rollgang can reduce tobacco sheet and conveying mechanism's laminating, and increase drying area has avoided the conveyer belt to be heated simultaneously. The arrangement of the upper roller way 7 and the lower roller way 8 and the sequence of the winding rollers of the tobacco sheets can be flexibly adjusted according to requirements.
In the above embodiment, the microwave source specifically employs the microwave magnetron 11, the microwave magnetron 11 is disposed on the side wall of the microwave drying cavity 3, and all the microwave magnetrons 11 are connected to the magnetron power box 4. In order to ensure the drying uniformity, the microwave magnetrons 11 are uniformly distributed along the side wall of the microwave drying cavity 3 from top to bottom. The outer side of the microwave magnetron 11 is also provided with a magnetron shield 12, and a control panel for controlling the magnetron is embedded in the shield, so that a worker can manually adjust the output power of the microwave magnetron 11. In specific implementation, the shape of the microwave drying cavity 3 and the type and arrangement mode of the microwave sources can be flexibly adjusted according to requirements.
In one embodiment of the present invention, a conical protrusion is disposed on the top of the microwave drying cavity 3, a negative pressure pipeline 1 is connected to the topmost end of the conical protrusion, and a pressure regulating valve 2 is disposed in the negative pressure pipeline 1. The negative pressure pipeline 1 is used for pumping out moisture in the microwave drying cavity 3 by means of negative pressure generated by the vacuum pumping device, and the conical bulges play a good role in collecting. The conical bulge and the negative pressure pipeline 1 can be welded into a whole, can be detachably connected through thread fit, and are arranged at the pressure regulating valve 2 of the negative pressure pipeline 1 to regulate the opening degree of the negative pressure pipeline 1, so that the pressure difference between the negative pressure pipeline 1 and the microwave drying cavity 3 is regulated.
Furthermore, a feeding end microwave suppressor 5 is arranged at a feeding port 31 of the microwave drying cavity 3, a discharging end microwave suppressor 10 is arranged at a discharging port 32, leakage of microwaves is suppressed through the feeding end microwave suppressor 5 and the discharging end microwave suppressor 10, power loss of a microwave source is reduced, and potential safety hazards are reduced.
The conveying rollers of the upper roller way 7 and the lower roller way 8 which are arranged in the microwave drying cavity 3 adopt driven rollers, namely the conveying rollers which are not connected with a rotary driving mechanism; in order to ensure smooth conveyance of the tobacco sheet, a paper guide roller 13 for guiding the roll of tobacco sheet is provided at the discharge port 32. The paper guide roller 13 is arranged in parallel with the upper roller table 7 and the discharge port 32. The paper guide roller 13 adopts a pair of conveying rollers which are connected with a driving motor and are oppositely arranged, and the pair of conveying rollers can play a certain role in clamping and pressing the tobacco sheets.
The temperature detector 9 and the humidity detector 6 are disposed on both sides of the paper guide roller 13, and the temperature detector 9 is disposed on one side of the paper guide roller 13 near the discharge port 32, thereby improving the accuracy of temperature detection.
The paper guiding roller 13 is set to be adjustable in rotation speed, that is, the rotation speed of a driving motor of the paper guiding roller is adjustable, when the temperature detector 9 detects that the temperature of the tobacco sheets is too high, the output power of the microwave source needs to be reduced, and when the humidity is too high, the output power of the microwave source needs to be increased, at the moment, the opening degree of the pressure regulating valve 2 can be increased, and the rotation speed of the paper guiding roller 13 is reduced to realize the online control of the moisture. When the rotation speed of the paper guide roller 13 is reduced, the time for conveying the tobacco sheets in the microwave drying chamber is prolonged, so that the tobacco sheets can be dried at a relatively low temperature. The humidity of the tobacco sheets is controlled by adjusting the rotating speed of the paper leading roller 13, changing the output power of the microwave source and adjusting the opening of the pressure regulating valve 2.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The on-line control device for the moisture of the tobacco sheets provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. An online control device for tobacco sheet moisture is characterized by comprising a microwave drying cavity (3), a microwave source for generating microwave and a microwave source power supply;
the microwave drying cavity (3) is provided with a feeding hole (31) and a discharging hole (32), a conveying mechanism for conveying tobacco sheets is arranged in the microwave drying cavity (3), and the conveying mechanism is connected with the feeding hole (31) and the discharging hole (32);
a humidity detector (6) used for detecting the humidity of the tobacco sheets is arranged at the discharge port (32), and the humidity detector (6) is used for controlling the microwave source to increase the output power when the humidity of the tobacco sheets is detected to be larger than a preset value.
2. The tobacco sheet moisture online control device according to claim 1, wherein a temperature detector (9) for detecting the temperature of the tobacco sheet is further arranged at the discharge port (32), and the temperature detector (9) is used for controlling the microwave source to reduce the output power when the temperature of the tobacco sheet is detected to be greater than a preset value.
3. The tobacco sheet moisture online control device according to claim 2, wherein the conveying mechanism is a conveying roller table arranged in the microwave drying cavity (3).
4. The tobacco sheet moisture online control device according to claim 3, wherein the conveying roller way comprises an upper roller way (7) and a lower roller way (8) which are arranged in parallel.
5. The tobacco sheet moisture online control device according to claim 4, wherein the microwave source is a microwave magnetron (11) disposed on the side wall of the microwave drying cavity (3), and the microwave magnetron (11) is uniformly distributed along the side wall of the microwave drying cavity (3) from top to bottom.
6. The tobacco sheet moisture online control device according to claim 5, characterized in that a conical protrusion is arranged on the top of the microwave drying cavity (3), the conical protrusion is connected with a negative pressure pipeline (1), and the negative pressure pipeline (1) is provided with a pressure regulating valve (2).
7. An on-line control device for the moisture content of tobacco sheets according to any one of claims 2 to 6, characterized in that the feed inlet (31) is provided with a feed end microwave suppressor (5) and the discharge outlet (32) is provided with a discharge end microwave suppressor (10).
8. The tobacco sheet moisture online control device according to claim 7, characterized in that all the conveying rollers of the conveying roller bed are driven rollers, and a paper guide roller (13) for guiding the tobacco sheet is arranged at the discharge port (32).
9. The tobacco sheet moisture online control device according to claim 8, wherein the moisture detector (6) and the temperature detector (9) are arranged on two sides of the paper guide roller (13), and the temperature detector (9) is arranged on one side of the paper guide roller (13) close to the discharge hole (32).
10. The tobacco sheet moisture online control device according to claim 9, characterized in that the rotation speed of the paper guide roller (13) is adjustable, and the rotation speed of the paper guide roller (13) is reduced when the humidity of the tobacco sheet is greater than a preset value and the temperature is greater than a preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010182766.1A CN111248478A (en) | 2020-03-16 | 2020-03-16 | Tobacco sheet moisture online control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010182766.1A CN111248478A (en) | 2020-03-16 | 2020-03-16 | Tobacco sheet moisture online control device |
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| Publication Number | Publication Date |
|---|---|
| CN111248478A true CN111248478A (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010182766.1A Pending CN111248478A (en) | 2020-03-16 | 2020-03-16 | Tobacco sheet moisture online control device |
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| CN (1) | CN111248478A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303490A (en) * | 2021-06-15 | 2021-08-27 | 上海恒博自动化设备有限公司 | Heating non-combustion sheet tobacco paper on-line drying device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2327197Y (en) * | 1998-06-09 | 1999-07-07 | 郭祖强 | Raw tobacco sheet drier |
| CN2336588Y (en) * | 1998-06-09 | 1999-09-08 | 郭祖强 | Tobacco slice drying device |
| CN2517265Y (en) * | 2001-12-28 | 2002-10-23 | 郭祖强 | Tobacco thin sheet microwave drier |
| CN101382379A (en) * | 2008-10-17 | 2009-03-11 | 安徽农业大学 | Intelligent microwave continuous drier and control method thereof |
| CN110810898A (en) * | 2019-11-19 | 2020-02-21 | 湖北中烟工业有限责任公司 | Novel drying device for reconstituted tobacco by papermaking method |
-
2020
- 2020-03-16 CN CN202010182766.1A patent/CN111248478A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2327197Y (en) * | 1998-06-09 | 1999-07-07 | 郭祖强 | Raw tobacco sheet drier |
| CN2336588Y (en) * | 1998-06-09 | 1999-09-08 | 郭祖强 | Tobacco slice drying device |
| CN2517265Y (en) * | 2001-12-28 | 2002-10-23 | 郭祖强 | Tobacco thin sheet microwave drier |
| CN101382379A (en) * | 2008-10-17 | 2009-03-11 | 安徽农业大学 | Intelligent microwave continuous drier and control method thereof |
| CN110810898A (en) * | 2019-11-19 | 2020-02-21 | 湖北中烟工业有限责任公司 | Novel drying device for reconstituted tobacco by papermaking method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113303490A (en) * | 2021-06-15 | 2021-08-27 | 上海恒博自动化设备有限公司 | Heating non-combustion sheet tobacco paper on-line drying device |
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Application publication date: 20200609 |
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