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Tobacco flake redrying and drying moisture segmented detection equipment and control method

A technology for detecting equipment and moisture, applied in the field of tobacco redrying, can solve problems such as poor consistency and unstable moisture, and achieve the effects of solving unstable moisture and poor consistency, improving product quality, and ensuring moisture consistency.

Pending Publication Date: 2022-07-29
YUNNAN KUNCHUAN TOBACCO EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the many defects and deficiencies in the above-mentioned background technology, the present invention improves and innovates it, and the purpose is to provide a method of online direct detection of moisture in segments, so as to realize the segmentation of dry moisture in materials in each dry moisture detection area. Quantification and sub-section refinement control to meet the requirement that the moisture of the material can reach the target moisture stably after being dried in multiple partitions, realize the independent closed-loop control of the moisture partition of the material moisture in each drying zone in the bulk material drying tunnel, and solve the re-baking and drying of tobacco sheets The problem of moisture instability and poor consistency, improving the pass rate of material drying moisture is conducive to improving product quality and avoiding losses caused by rework of unqualified material moisture after drying

Method used

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  • Tobacco flake redrying and drying moisture segmented detection equipment and control method
  • Tobacco flake redrying and drying moisture segmented detection equipment and control method
  • Tobacco flake redrying and drying moisture segmented detection equipment and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] like Figure 1-2 As shown in the figure, the present invention provides a segmented detection device for the moisture content of tobacco sheet redrying and drying, including: three bulk material drying areas 1, a moisture control system 4 placed outside the drying area, and a material drying tunnel 2 running through three In bulk material drying zone 1, conveying device 3 moves in material drying tunnel 2. The material is laid flat above the conveying device 3, and the conveying device 3 carries the material to move synchronously in the drying tunnel 2, and passes through the three bulk material drying zones 1 for heating and drying in turn. Wherein, each bulk material drying zone 1 includes a tunnel 11 and a hot-air heating and drying device 13 for drying hot-air heating, a partition 14 is located at the end of the tunnel 11, and the partition 14 is used to separate adjacent two drying zones;

[0064] The moisture detector protection device 15 is embedded in the materia...

Embodiment 2

[0073] like Figure 1-2 As shown in the figure, an online moisture detector 12 is set above the material at the tail of each drying section of the tobacco sheet redrying and drying section including the three bulk material drying sections 1 to detect the moisture value of the material after drying in the drying section in real time, and feedback Control the drying capacity of the drying zone, realize the feedback independent closed-loop control of the moisture zone in each drying zone, and at the same time feedforward control the drying capacity of the zone located after the drying zone, realize the feedforward + feedback independent closed-loop control of the moisture zone in the next drying zone . Taking the online moisture detector set in the second drying zone as an example, when the feedback signal detected by the online moisture detector 12 in the second drying zone shows that the material moisture at this point is 16%, which is 15% higher than the target moisture value,...

Embodiment 3

[0076] On the basis of Example 1 and Example 2, a control strategy is obtained and executable instructions are formed, including the adjustment and drying three-zone hot air heating temperature controller 131 and the three-zone air supply fan 133 that can change the heating and drying capacity of materials. Either one of the two methods of wind speed and the combination of the two methods can effectively reduce the drying moisture deviation of tobacco sheets. It should be noted that the purpose of changing the drying moisture of the tobacco sheets can be achieved by changing the feed flow rate and changing the drying residence time according to the actual production situation, which will not be repeated here.

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Abstract

The invention discloses tobacco flake redrying and drying moisture segmented detection equipment and a control method, the tobacco flake redrying and drying moisture segmented detection equipment comprises at least three drying moisture detection areas, tunnels in all the drying moisture detection areas are coaxially communicated to form a material drying tunnel, and a conveying device is installed in the material drying tunnel; each dry moisture detection area is internally provided with an online moisture detector, the online moisture detectors are arranged above the conveying device, the online moisture detectors are in signal connection with a moisture control system, and the moisture control system is located on the outer side of the dry moisture segmented detection equipment body; and the moisture control system is used for controlling and monitoring the running state of each online moisture detector in real time. The invention provides a mode of directly detecting moisture in a segmented on-line manner, so that the drying moisture of the material is finely controlled by each drying moisture detection area, the requirement that the moisture of the material can stably reach the target moisture after the material is dried by a plurality of subareas is met, and the independent closed-loop control of the material moisture subareas in each drying area is realized.

Description

technical field [0001] The invention relates to a tunnel-type multi-zone bulk material drying equipment and a control method thereof, in particular to a moisture segment detection equipment and a control method for the redrying and drying of tobacco sheets, belonging to the technical field of tobacco redrying. Background technique [0002] With the continuous development of domestic refined threshing and redrying technology and equipment, in order to improve the quality of tobacco leaves, threshing and redrying enterprises pay more and more attention to the moisture stability and consistency of dried tobacco sheets. At present, the existing tobacco sheet re-baking process and equipment adopts 3 to 6 partitions to re-bake and dry the tobacco slices. The length of each drying partition is 4-8m. The instrument is only set after the last drying zone, and detects the final moisture of the tobacco sheets after drying in multiple zones, and manually adjusts one (or several) drying ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24B3/10
CPCA24B3/10
Inventor 王林宝梁逢春吴永昆李俊朱清瑞邓晓华赵锦勋崔璇朱路江
Owner YUNNAN KUNCHUAN TOBACCO EQUIP CO LTD
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