Flexible control device for pneumatically conveying tobacco shreds and control method

A control device and pneumatic conveying technology, applied in the direction of conveying bulk materials, conveyors, transportation and packaging, etc., can solve the problems of unstable flow state, high shredding rate of cut tobacco, fluctuation of pressure and air volume, etc., to improve measurement and control. Accuracy, reducing the rate of shredded tobacco, and reducing the effect of shredding

CN102429320AActive Publication Date: 2012-05-02法特科技(深圳)有限公司

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: 法特科技(深圳)有限公司
Publication Date: 2012-05-02

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Abstract

The invention provides a flexible control device for pneumatically conveying tobacco shreds and a control method, which starts a tobacco shred pneumatic conveying system in a soft start manner to reduce the break rate of the tobacco shreds when starting. After started, the device directly measures and controls the tobacco conveying speed, and combines the flexible control manner, to make the tobacco shreds in a horizontal pipeline to generate continuous and stable dense phase flow, thereby reducing the break rate in the pneumatic conveying process, and reducing the energy consumption of the pneumatic conveying system. In the dormant period and stopping period in the tobacco shred conveying process for a cigarette making machine, the wind complementing and regulating valve is controlled to complement wind by simulating the shred conveying condition for stabilizing the pressure and the wind amount in a dust removing pipe, and then the wind complementing and regulating valve is finely regulated by measuring the pressure in the dust removing pipe to increase or reduce the wind complementing flow amount for further stabilizing the pressure in the dust removing pipe, thereby greatly reducing the pressure fluctuation cased by intermittence, randomness and temporary stoppage in the tobacco shred conveying process in the tobacco shred pneumatic conveying system.

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Description

technical field

[0001] The invention relates to the technical field of pneumatic conveying, in particular to a flexible control device and control method for pneumatic conveying shredded tobacco speed. Background technique

[0002] At present, pneumatic conveying and related technologies are widely used in building materials, chemical industry, grain, metallurgy, mining, environmental protection, light industry, energy and other departments. Fibrous and leaf-like materials, such as cement, lime, flour, grain, coal powder, explosives, chemical fertilizers, chemical raw materials, molding sand, cotton, wool, shredded tobacco, tea, carbon black, wood chips, etc., are more and more widely used The method of pneumatic conveying.

[0003] In cigarette production, pneumatic conveying of shredded tobacco is widely used. Pneumatic conveying of shredded tobacco has the advantages of low investment, flexible layout, high reliability, and easy maintenance and management. However, the ...

Claims

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