Pneumatic Conveyor Bypass Sections Preventing Blockages
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Solution Overview
Problem
Conventional pneumatically conveying devices face inefficiencies in conveying capacity and gas energy usage, leading to blockages and high pressure losses due to bulk material accumulation and slug formation, which results in excessive deflection forces and larger conveyor device dimensions.
Innovation Solution
The design incorporates a bypass conveying pipe system with an inlet opening above the outlet opening, an oblique course, and a carrier with a specific cross-section to prevent blockages, fluidize bulk material, and reduce pressure loss, allowing for efficient gas flow and smaller device dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inlet opening is arranged below or at the same level as the outlet opening, then bulk material can easily enter the bypass conveying pipe sections, but this causes blockages and slug formation in the bypass sections
Solution Approach 1:
The inlet opening of the bypass conveying pipe sections is arranged above the outlet opening, inverting the conventional arrangement. This inversion prevents bulk material from entering the bypass sections while allowing conveying gas to flow through, thereby preventing blockages and slugs without significantly impacting conveying capacity
Solution Approach 2:
The bypass conveying pipe sections are provided with specific local features including inlet openings positioned above outlet openings, and oblique courses in the bulk material conveying direction. These localized structural qualities differentiate the bypass sections from conventional pipes, enabling selective gas flow while blocking material entry
2Productivity
If the conveying gas pressure is increased to improve conveying capacity, then more bulk material can be conveyed, but this results in excessive pressure peaks and deflection forces
Solution Approach 1:
The conveying system is segmented into a main conveying pipe and multiple bypass conveying pipe sections. This segmentation allows the conveying gas flow to be distributed and controlled, preventing excessive pressure peaks while maintaining conveying capacity through the coordinated operation of main and bypass sections
Solution Approach 2:
The bypass conveying pipe sections are designed with an oblique course that creates dynamic gas flow patterns. The gas flows obliquely through the bypass sections, generating fluidization effects that prevent material deposition and reduce pressure buildup, thereby enabling higher conveying capacity without excessive pressure peaks
3Ease of manufacture
If the bypass conveying pipe sections are arranged horizontally, then installation is simplified, but bulk material deposits on the pipe bottom and forms plugs
Solution Approach 1:
The bypass conveying pipe sections are pre-configured with an oblique course angle relative to the bulk material conveying direction. This preliminary geometric arrangement ensures that conveying gas flows obliquely through the bypass sections, creating fluidization currents that prevent material deposition before plugs can form, while still allowing for straightforward installation
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 configuration enhances the power efficiency of the conveyor device by minimizing blockages, reducing pressure peaks, and avoiding high deflection forces, while allowing for higher conveying gas pressure usage without excessive pressure peaks, thus improving the overall conveying efficiency and fluidization of bulk materials.
Implementation Method 1
The active, constant inflow or eddying in of the conveying gas via the bypass conveying pipe sections causes the bulk material to become fluidized and thus avoids or prevents the bulk material from being deposited on the bottom of the main conveying pipe with the undesirable resulting formation of plugs.
Data Source
Figure 1
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Figure 3
AI summary
The conveyor (1) has a main conveyor tube (3) and multiple bypass pipe conveyor sections (5) that are separated from each other and are arranged one after another within the main conveyor tube. An inlet opening (6) is arranged in main conveyor tube area with horizontal running component of the main- conveyor tube in a cross-section of the main conveyor tube.