The invention relates to a dense phase pneumatic conveying system based on fluid state and pressure characteristic joint control. The dense phase pneumatic conveying system comprises a storage tank, afeeding bin pump, a double-cavity conveying pipeline mechanism, a material gathering device, a gas source and a control cabinet; and the bottom of the storage tank is connected with a feeding openingof the feeding bin pump through a feeding pipeline, and the feeding pipeline is provided with a bin pump feeding valve. In summary, main conveying airflow and auxiliary conveying airflow jointly realize material suspension dense phase conveying, the auxiliary conveying airflow is subjected to material conveying fluid state and conveying pipeline pressure characteristic joint control, the auxiliary conveying airflow is automatically adjusted according to fluid state and pressure signals, the overall structure design is reasonable, and dense phase pneumatic conveying can be performed stably andsmoothly.

Dense phase pneumatic conveying system based on fluid state and pressure characteristic joint control

The invention discloses a light-medium coflow pneumatic conveying system. The system comprises a positive-pressure dense phase pneumatic conveying system and a light-medium material negative-pressuresuction pneumatic conveying system for joint mixed conveying of light-medium materials and conveying materials; the positive-pressure dense phase pneumatic conveying system comprises a high-pressure air source, a coflow conveying pipe, a light-medium supply device and a rough conveying material supply device; an outlet of the coflow conveying pipe is connected with a coflow material collector; a discharge port of the coflow material collector is connected with a light-heavy material separator; and a discharge port of the light-heavy material separator is connected with a light-medium materialbox and a rough conveying material box. The system has the advantages of low dense phase pneumatic conveying energy consumption, no material damage, less pipe wall wear and wide dilute phase pneumaticconveying application range, can be used for low-speed dense phase conveying of such difficultly conveyed materials as large-particle-size materials, rough materials and fragile materials, can effectively widen the dense phase pneumatic conveying application range, and can be widely applied to the field of industry.

Zhou Jiawei

Papers

Light-medium coflow pneumatic conveying system