A device and method for regulating the humidity of cut tobacco in a cigarette maker

By using a bypass branch-type dehumidification control structure and closed-loop control, the problem of moisture absorption and clumping of tobacco shreds in traditional cigarette machines has been solved, achieving efficient and stable cigarette forming and production, and reducing equipment failure and maintenance costs.

CN122439905APending Publication Date: 2026-07-24CHINA TOBACCO YUNNAN IND +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA TOBACCO YUNNAN IND
Filing Date
2026-06-12
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The negative pressure air path design of traditional cigarette making machines cannot adapt to the high moisture absorption characteristics of tobacco shreds with high smoke generation agents, resulting in the tobacco shreds absorbing moisture and clumping, poor cigarette forming quality, poor production stability, and existing improvement solutions are prone to disrupting the original equipment air path matching relationship, causing air field disorder.

Method used

It adopts a bypass branch dehumidification control structure, and realizes air flow diversion and switching through a three-way pipe and an on/off switching air valve. Combined with a multi-stage electric regulating air valve and a staggered baffle mixing section, it dynamically controls the supply air humidity to ensure uniform and stable air volume and air pressure. It is equipped with an in-situ air path acquisition and humidity detection module to form a closed-loop control.

Benefits of technology

Without altering the original equipment structure, the system precisely controls the air supply humidity, inhibits the caking of tobacco shreds due to moisture absorption, improves the consistency of cigarette forming, reduces equipment failures and material losses, and enhances production efficiency and finished product quality.

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Abstract

The application discloses a high-smoke-agent cut tobacco negative pressure humidity balance regulation and control device and method for a cigarette making machine, and belongs to the technical field of heating cigarette manufacturing and processing. The application provides a bypass branch type dehumidification regulation and control device, which comprises a cut tobacco suction belt air inlet pipe, an on-off switching air valve, two air pipe tees, a bypass pipeline, a humidity regulation and treatment system, an in-situ air path collection module, a humidity detection module and a regulation and control module. The humidity regulation and treatment system comprises a positive pressure fan, a condensation dehumidifier and a plurality of electric regulation air valves. The regulation and control module controls each component based on original air path parameters and real-time humidity in a closed loop, flexibly switches full dehumidification and partial dehumidification modes, and cooperates with staggered baffles in a mixing section to ensure uniform airflow. The application does not change the original negative pressure main air path structure and flow resistance characteristics, avoids air pressure fluctuation, effectively inhibits high-smoke-agent cut tobacco moisture absorption and caking, improves cigarette quality, reduces failure rate and material loss, and can reuse a traditional cigarette making machine at low cost.
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