Dense-phase conveying control method and system

A technology of dense phase conveying and control method, applied in conveyors, conveying bulk materials, transportation and packaging, etc., can solve problems such as poor safety, low efficiency, and stability of continuous material conveying that affects switching

Active Publication Date: 2015-06-10
ENN SCI & TECH DEV
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Problems solved by technology

[0005] The present invention provides a dense-phase conveying control method and system, which solves the problem of using manual control in the parallel conveying mode in the prior art, which easily affects the continuity of switching between various conveying systems and the stability of material conveying, and Problems of poor security and low efficiency

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  • Dense-phase conveying control method and system

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Embodiment Construction

[0036] A dense-phase conveying control method provided by an embodiment of the present invention will be described in detail below.

[0037] In the dense-phase conveying control method provided by the embodiment of the present invention, the material detection device obtains the material level height values ​​of the silos and lock hoppers in each set of conveying systems in real time, and feeds back the material level height values ​​to the control device; the control device will The height value of the material level is compared with the preset high or low material level threshold to control the opening or closing of each valve in each set of conveying system; The pressure value is fed back to the control device; the control device compares the pressure value with the preset pressure threshold to control the opening or closing of each valve in each set of conveying system; the control device according to the material level of each set of conveying system The height value and ...

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Abstract

The invention discloses a dense-phase conveying control method and system, relates to the technical field of pneumatic conveying, and solves the problems that switching continuity among conveying systems and material conveying stability are affected easily due to manual control for a parallel conveying mode, the safety is poorer and the efficiency is lower. According to the dense-phase conveying control method, a material detection device and a pressure detection device acquire the material level height values and pressure values of bins and lock hoppers of the conveying systems in real time respectively, and feed the material level height values and the pressure values back to a control device; the control device compares the material level height values and the pressure values with preset high and low material level threshold values and pressure threshold values respectively, and controls opening and closing of valves according to comparison results; and the control device controls a vacuum bin to convey materials automatically to a reaction device alternately through the conveying systems according to the material level height values and the pressure values of the conveying systems. The dense-phase conveying control method and system are mainly applied to a material conveying process.

Description

technical field [0001] The invention relates to the technical field of airflow transportation, in particular to a dense-phase transportation control method and system. Background technique [0002] Airflow conveying is to use the energy of airflow to transport granular materials along the direction of airflow in a closed pipeline, which is a specific application of fluidization technology. According to the density of particles in the conveying pipeline, air conveying is divided into dilute phase conveying and dense phase conveying. [0003] The common feeding method in series is to feed the material into the lock hopper through the vacuum hopper through the hopper, and then transport it to the reaction device in dense phase through the lock hopper. Specifically, when feeding materials from the silo to the lock hopper, the lock hopper is simultaneously transporting materials to the gasifier, that is, the feeding and delivery of materials in the lock hopper are performed simu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G53/66
Inventor 汪国庆刘明汤海奇周三方科学马志超马丽荣聂永广
Owner ENN SCI & TECH DEV
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