Feeding cabin with composite air ventilation structure

Abstract

The invention discloses a feeding cabin with composite air ventilation structure, comprising a first air inflating mechanism near the discharging hole, wherein the height of the mechanism upward taking the discharging hole as the reference is 0.5-20 times of the diameter of the discharging hole; a second air inflating mechanism adjacent to the first air inflating mechanism, wherein the height in the vertical direction is 0.5-15 times of the diameter of the discharging hole; and a third air inflating mechanism adjacent to the second air inflating mechanism, wherein the height in the vertical direction is 10-60 times of the diameter of the discharging hole; the three air inflating mechanisms are independent and are respectively provided with an air inlet, wherein the ranges of the superficial gas velocity of the three air inflating mechanisms are respectively 1-60 mm / s, 1-50 mm / s and 0-10 mm / s. The feeding cabin of the invention can raise the gas holdup of the material, and increases the mobility of the material, and avoids the material from bridging on the discharging hole such that it can feed the downstream equipment in integrate flow, high concentration and big mass flow rate way.

Description

technical field [0001] The invention relates to a powder material feeding bin, in particular to a feeding bin with a composite ventilation structure. Background technique [0002] Supplying material to downstream equipment through a silo with the function of storing and discharging bulk granular materials is a commonly used process in industrial production processes. However, for sticky and difficult-to-flow granular materials, a "funnel flow" flow pattern often occurs during discharge, which not only reduces the effective storage space of the silo, but also limits the discharge mass flow rate; the more serious problem is , When the silo is discharging at high pressure, arching and bridging often occur at the discharge port, making it difficult to discharge the material, which seriously affects normal production. [0003] To solve the above problems, the way of percussion, vibration and stirring is usually used, or the way of air cannon or ventilation is used at the exit to...

AI Technical Summary

Problems solved by technology

However, this patent only provides the connection and sealing method between the unloading device and the main part, and neither provides the structural features and dimensions of the main part of the container and the bottom unloading device, nor does it aim at promoting the discharge of the silo and eliminating the discharge. Propose relevant ventilation layout plans for problems such as poor material flow

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