CN104865828A - Airflow drying outlet material water content control method - Google Patents
Airflow drying outlet material water content control method Download PDFInfo
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- CN104865828A CN104865828A CN201510132475.0A CN201510132475A CN104865828A CN 104865828 A CN104865828 A CN 104865828A CN 201510132475 A CN201510132475 A CN 201510132475A CN 104865828 A CN104865828 A CN 104865828A
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Abstract
The invention discloses an airflow drying outlet material water content control method. According to the method, an airflow drying outlet material water content detection point is arranged on an electronic scale after airflow drying and air feeding; a metering tube is installed on a feeding airlock at an air feeding outlet so as to control the thickness of a material on the electronic scale; the detection value of a moisture meter is made to be consistent with the water content of the material at an airflow drying outlet; and therefore, the accuracy of control on the water content of the material in an airflow drying process can be improved.
Description
Technical field
The present invention relates to the control method of the dry outlet material water percentage of material pneumatic in tobacco manufacturing enterprise, a kind of control method of pneumatic drying outlet material water ratio specifically.
Background technology
The regulating and controlling of pneumatic drying outlet material water ratio controls adjustment pneumatic conveying drying entrance mass flow automatically by drying program and realizes, after dry entrance Moisture Meter and dry moisture content of outlet instrument detect material water ratio, water percentage is reportedly defeated by drying control program, through calculating, automatic adjustment pneumatic conveying drying entrance mass flow, regulated by mass flow and realize the adjustment of outlet material water percentage, prior art is that the check point of pneumatic drying outlet material water ratio is arranged on pneumatic drying outlet 30cm place, and control flow as shown in Figure 1.
The shortcoming of prior art is:
1. pneumatic drying outlet Moisture Meter check point is positioned at pneumatic drying outlet, and pneumatic drying outlet temperature of charge is higher, and more than 50 DEG C, and influenced by environmental temperature, Moisture Meter testing process affects by material temperature, detected value and true material water ratio deviation large;
2. pneumatic drying outlet material thickness affects by mass flow, and mass flow always is fluctuation, and the material thickness of Moisture Meter check point is uneven, and detected value and the real material water ratio deviation of Moisture Meter are large;
3. Moisture Meter affects the water percentage that truly can not reflect outlet material in real time by above two factors, the material water ratio value being transferred to dry run control program is false, also can there is deviation in the signal that dry run control program provides the adjust flux of pneumatic conveying drying entrance electronic scales thereupon, not high to the control accuracy of outlet material water percentage, cause pneumatic drying outlet material water ratio frequent fluctuation, the qualification rate of outlet material water percentage is low;
4. material is after wind send, wind passes through the impact of journey by ambient humidity, when ambient humidity is low wind pass through journey material moisture scatter and disappear, material water ratio reduces, ambient humidity Gao Shifeng passes through material moisture absorption in journey, material water ratio increases, and such situation just causes the material water ratio of rear operation to fluctuate with the change of ambient humidity, brings larger difficulty to the control of material water ratio in the manufacture process of rear operation.
Summary of the invention
The object of the invention is to for above-mentioned the deficiencies in the prior art, a kind of control method of pneumatic drying outlet material water ratio is provided, effectively can solve and go out by pneumatic conveying drying the drying control program that material water cut value metrical error causes greatly and regulate mass flow deviation, cause pneumatic drying outlet material water ratio to fluctuate large problem.Absorbable organic halogens pneumatic drying outlet material water ratio of the present invention, makes the control of pneumatic drying outlet material water ratio more accurate, improves pneumatic drying outlet material water ratio qualification rate, operation material water ratio qualification rate after improving, stabilized product quality.
The technical solution adopted in the present invention is:
A kind of control method of pneumatic drying outlet material water ratio, the position, electronic scales feeder upper, middle and lower sending mouth at wind installs gauge line additional, material passes through temperature of charge after journey through wind to be reduced, fall on electronic scales, control material thickness, make material thickness on electronic scales even, detect through Moisture Meter, detected value is transferred to drying program, and drying program accurately adjusts pneumatic conveying drying entrance mass flow, outlet material water ratio is stablized and reaches technological standards requirement.
Pneumatic drying outlet material water ratio is controlled by existing pneumatic drying outlet material water ratio control method, under pneumatic drying outlet material water ratio technological standards is the technological requirement of 12.6 ± 1.0%, pneumatic drying outlet material water ratio qualification rate is 91.07%, after the present invention's application, solve temperature of charge and the uneven problem of material thickness, make Moisture Meter the water percentage of material can be detected exactly, dry run control program can be fed back to exactly, make the adjustment of drying control program to mass flow more accurate, when identical technological standards requires, pneumatic drying outlet material moisture qualification rate is promoted to 99.89%, Moisture Meter check point is arranged on after wind send, and wind can be made to pass through in journey, and material water ratio change is unified is controlled material water ratio by drying program, stabilizes the material water ratio of rear operation, stabilized product quality.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of prior art;
Fig. 2 is schematic flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing 2 and specific embodiment, the invention will be further described.
As shown in Figure 2, pneumatic drying outlet Moisture Meter check point is moved to wind from pneumatic drying outlet to be sent rear electronic scales, pass through temperature of charge after journey through wind to reduce, solve temperature and affect Moisture Meter detected value problem, check point is arranged on wind and sends on the electronic scales of mouth, and the position, feeder upper, middle and lower sending mouth at wind installs gauge line additional, controls material thickness, make material thickness on electronic scales even, solving material thickness affects Moisture Meter detected value problem.Such Moisture Meter truly can reflect material water ratio, the material water ratio value being transferred to drying program is accurate, program accurately can adjust pneumatic conveying drying entrance mass flow, outlet material water ratio is stablized and reaches technological standards requirement, operation material moisture qualification rate after improving.
Embodiment one: pneumatic drying outlet material water ratio technological standards is 12.6 ± 1.0%, pneumatic conveying drying entrance mass flow is 3045kg/h, pneumatic conveying drying entrance material water ratio is 35.87%, outlet material water percentage is 12.37%, water percentage requires central value lower than technological standards, and drying control program calculates adjustment pneumatic conveying drying entrance mass flow automatically, and entrance mass flow is adjusted to 3055kg/h, after flow adjustment, pneumatic drying outlet material water ratio is 12.59%.
Embodiment two: pneumatic drying outlet material water ratio technological standards is 12.6 ± 1.0%, pneumatic conveying drying entrance mass flow is 2977kg/h, pneumatic conveying drying entrance material water ratio is 36.0%, outlet material water percentage is 12.84%, water percentage requires central value higher than technological standards, and drying control program calculates adjustment pneumatic conveying drying entrance mass flow automatically, and entrance mass flow is adjusted to 2949kg/h, after flow adjustment, pneumatic drying outlet material water ratio is 12.54%.
Claims (2)
1. the control method of a pneumatic drying outlet material water ratio, it is characterized in that step is as follows: the position, electronic scales feeder upper, middle and lower sending mouth at wind installs gauge line additional, material passes through temperature after journey through wind to be reduced, fall on electronic scales, control material thickness, make material thickness on electronic scales even, detect through Moisture Meter, detected value is transferred to drying control program, drying control program accurately adjusts pneumatic conveying drying entrance mass flow, pneumatic drying outlet material water ratio is stablized and reaches technological standards requirement.
2. the control method of pneumatic drying outlet material water ratio according to claim 1, it is characterized in that, pneumatic conveying drying entrance mass flow is 2977-3045kg/h, pneumatic conveying drying entrance material water ratio is 35.87-36.0%, pneumatic drying outlet material water ratio technological standards is 12.6 ± 1.0%, outlet material water percentage is 12.37-12.84%, when water percentage requires central value lower than technological standards, drying control program calculates adjustment pneumatic conveying drying entrance mass flow automatically, entrance mass flow is adjusted to 2949-3055kg/h, after flow adjustment, pneumatic drying outlet material water ratio is 12.54-12.59%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510132475.0A CN104865828B (en) | 2015-03-25 | 2015-03-25 | A kind of control method of pneumatic drying outlet material water ratio |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510132475.0A CN104865828B (en) | 2015-03-25 | 2015-03-25 | A kind of control method of pneumatic drying outlet material water ratio |
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| CN104865828A true CN104865828A (en) | 2015-08-26 |
| CN104865828B CN104865828B (en) | 2017-10-03 |
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Cited By (3)
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| CN106805282A (en) * | 2017-02-16 | 2017-06-09 | 红塔烟草(集团)有限责任公司 | A kind of method for controlling water content of chimneying formula dried material |
| CN111375549A (en) * | 2018-12-28 | 2020-07-07 | 贵州中烟工业有限责任公司 | Tobacco winnowing equipment and secondary winnowing flow measuring method, device and equipment thereof |
| CN112014550A (en) * | 2020-08-24 | 2020-12-01 | 湖南中联重科混凝土机械站类设备有限公司 | Method and device for detecting moisture content of aggregate and machine-readable storage medium |
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| CN1706292A (en) * | 2005-04-27 | 2005-12-14 | 玉溪金灿科技有限公司 | Tobacco flake grouping fine processing and shredding process flow |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106805282A (en) * | 2017-02-16 | 2017-06-09 | 红塔烟草(集团)有限责任公司 | A kind of method for controlling water content of chimneying formula dried material |
| CN111375549A (en) * | 2018-12-28 | 2020-07-07 | 贵州中烟工业有限责任公司 | Tobacco winnowing equipment and secondary winnowing flow measuring method, device and equipment thereof |
| CN112014550A (en) * | 2020-08-24 | 2020-12-01 | 湖南中联重科混凝土机械站类设备有限公司 | Method and device for detecting moisture content of aggregate and machine-readable storage medium |
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| CN104865828B (en) | 2017-10-03 |
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