A rotary valve dense phase pneumatic conveying system and method

Abstract

Disclosed are a rotary valve dense phase pneumatic conveying system and method. The rotary valve dense phase pneumatic conveying system comprises a compressor, a cooler, a water separator, an initialmaterial bin, a variable frequency type adjustable pre-cutting rotary valve, a final material bin and a conveying pipeline. The variable frequency type adjustable pre-cutting rotary valve is driven bya controllable variable frequency motor. An adjustable baffle and a feeding blocking curtain are designed in each hopper, the angle can be adjusted, the volume can be changed, and the hoppers rotatearound a rotary shaft. When each hopper rotates to a feeding inlet, materials enter the hopper. When each hopper rotates to a discharging outlet, the materials are discharged from the discharging outlet. When each feeding blocking curtain passes through the discharging outlet, no materials enter the pneumatic conveying pipeline until the next hopper containing materials rotates to the dischargingoutlet. The initial material bin is connected with the variable frequency type adjustable pre-cutting rotary valve. The discharging outlet is connected with the conveying pipeline. The compressor, thecooler and the water separator provide a stable and dry conveying air source for the whole pneumatic conveying system. The water separator is connected with the conveying pipeline. The conveying pipeline conveys the materials to the final material bin.

Description

technical field [0001] The invention relates to a rotary valve dense-phase pneumatic conveying system and method, and belongs to the technical field of granular material dense-phase pneumatic conveying. Background technique [0002] The dense-phase pneumatic conveying of pellets, also known as plug-flow pneumatic conveying, is to artificially form the pellets to be conveyed in the conveying pipeline, and then rely on pneumatic pressure to make them move in the pipeline to achieve the purpose of conveying. It has the characteristics of low speed, dense phase and low power index. Solve the following three problems in pneumatic conveying: [0003] 1) Pneumatic conveying requires more power, consumes more gas, and has a higher power index. [0004] 2) The material velocity in the tube is fast, the friction of the tube wall is relatively severe, and the material is easily crushed. [0005] 3) The amount of dust generated is large, the load of gas-solid separation and dust coll...

AI Technical Summary

Problems solved by technology

[0003] 1) Pneumatic conveying requires more power, consumes more gas, and has a higher power index

[0004] 2) The material velocity in the pipe is fast, the friction of the pipe wall is relatively severe, and the material is easily crushed

[0005] 3) The amount of dust generated is large, the load of gas-solid separation and dust collection is quite large, and the corresponding equipment is difficult to simplify

This has caused the following problems in the process of conveying pellets: 1. The conveying volume is small; 2. Continuous production is not possible; 3. The conveying distance is short.

Gas control unit (ACU) + rotary valve technology, complex process calculation

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