Rotary Airlock Blowing Device Radial Flushing
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Solution Overview
Problem
Existing rotary airlock systems require large-volume flushing gas streams to effectively flush material from airlock chambers, but this is difficult to implement due to high pressure loss and limited gas passage, resulting in inadequate flushing and clogging risks.
Innovation Solution
A blowing device with a feeding shoe that directs the conveying gas stream radially into the airlock chamber, utilizing the main gas stream to create a high-pressure, high-volume flushing effect, and optionally using multiple blowing tubes arranged in parallel to ensure thorough flushing across the axial length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a large-volume flushing gas stream is used to flush the airlock chamber, then flushing efficiency is improved, but the system complexity and pressure loss increase due to the need for separate gas supply means and complex branching
Solution Approach 1:
The conveying gas stream is made to serve dual purposes: both conveying the bulk material and flushing the airlock chamber. The blowing device utilizes the existing conveying gas without requiring a separate flushing gas supply system, thus achieving high-volume flushing while avoiding the complexity of additional gas supply means and branching arrangements
Solution Approach 2:
The invention merges the conveying gas function and flushing gas function into a single integrated system. The conveying gas stream that would otherwise be wasted or require complex branching is directly utilized for flushing through the blowing device, combining two functions into one unified gas flow path
2Productivity
If the flushing gas is introduced from the side of the housing, then the airlock chamber can be flushed, but the passage gas cross section is limited resulting in high pressure loss and reduced flushing effectiveness
Solution Approach 1:
The invention changes the spatial dimension of gas introduction from lateral (side of housing) to axial (through the feeding shoe at the outlet end). This dimensional change allows the flushing gas to be introduced directly into the airlock chamber along the axis of rotation, utilizing the full cross-sectional area of the chamber and avoiding the restricted passage cross-section problems of lateral introduction
3Ease of operation
If a separate flushing gas stream is branched from the conveying gas stream, then flushing can be performed, but the branching arrangement becomes complex and difficult to implement
Solution Approach 1:
Instead of branching off a portion of the conveying gas stream for flushing, the invention extracts and utilizes the entire conveying gas stream through the blowing device. This eliminates the need for complex branching arrangements while still achieving effective flushing, as the blowing device directly receives and directs the conveying gas into the airlock chamber
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient flushing of airlock chambers, preventing material accumulation and ensuring complete discharge performance by utilizing the main gas stream for flushing, reducing clogging risks and improving discharge efficiency.
Implementation Method 1
the blowing device... generates a reversible flushing gas stream in the airlock chamber... high-pressure, high-volume flushing effect
Implementation Method 2
the conveying gas stream... is supplied essentially exclusively to the blowing device... enables blowing out of the airlock chambers with maximum pressure and maximum possible flushing gas volume
Data Source
AI summary
Disclosed is a blowing device for a rotary air lock, comprising a flushing gas stream that is fed by a gas supply line (12) in order for adhering material to be flushed and blown out of at least one compartment (20-24) of the rotary air lock (20-24) when said compartment is located next to a product outlet of the rotary air lock. A blowing unit (30), which comprises at least one blowing tube (32) and is located in a feeding shoe (10) that is arranged at the product outlet, directs the flushing gas stream to at least one compartment (20-24) of the rotary air lock.