Vibrating Portable Drainage System for Granular Materials
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Solution Overview
Problem
Existing methods for draining bulk granular materials are inefficient in removing moisture and liquids prior to shipment, particularly in industries like frac sand, coal mining, and construction, where traditional methods fail to effectively remove the majority of moisture content.
Innovation Solution
A vibrating portable drainage system comprising a graded slope with a perforated header pipe, impermeable flexible liner, modular units with site-specific drainage fabric and expanded geosynthetic material, and pneumatic vibrators driven by pressurized air to enhance drainage efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional drainage methods are used for bulk granular materials, then the system is simple to operate, but the moisture removal efficiency is poor
Solution Approach 1:
The drainage system is divided into modular units that can be arranged in different configurations. Each module contains specific components (geotextile layers, drainage channels, geocells) that work together to improve moisture removal efficiency while maintaining operational simplicity through standardized assembly.
Solution Approach 2:
Vibratory mechanisms are incorporated into the drainage system to enhance moisture removal from bulk granular materials. The vibration helps break capillary bridges and facilitates faster drainage, significantly improving productivity without requiring complex operational procedures.
2Productivity
If bulk granular material is placed in piles for drainage, then no additional equipment is needed, but the drainage efficiency is insufficient to remove majority moisture
Solution Approach 1:
Geotextile materials with controlled porosity are used as drainage layers within the modular units. These porous materials allow efficient water passage while maintaining structural integrity, enabling high drainage efficiency through the integration of specialized materials rather than complex manufacturing processes.
Solution Approach 2:
The system combines multiple materials (geotextiles, geocells, drainage channels, granular fill) into composite modular structures that work synergistically. This composite approach achieves superior drainage efficiency by integrating the advantages of each material while keeping the overall system implementation relatively simple.
3Productivity
If a heater is used to remove moisture, then final moisture content can be reduced, but energy consumption is high and only surface moisture is effectively removed
Solution Approach 1:
The system uses pneumatic vibration (air-driven vibrators) instead of thermal heating to remove moisture. This pneumatic approach consumes less energy while achieving more effective moisture removal from bulk materials by mechanically disrupting capillary water retention rather than relying on thermal energy.
Solution Approach 2:
Mechanical vibration replaces thermal heating as the primary moisture removal mechanism. This substitution reduces energy consumption significantly while improving effectiveness, as mechanical vibration can access moisture throughout the bulk material rather than only at the surface where heating would be most effective.
4Adaptability or versatility
If the drainage system is fixed in location, then structural stability is maintained, but the system cannot be relocated to different drainage sites
Solution Approach 1:
The drainage system is segmented into standardized modular units that can be easily assembled and disassembled. This segmentation enables relocatability while maintaining structural stability during operation, as each module is designed to be self-contained yet structurally sound when assembled with other modules.
Solution Approach 2:
The system transitions from a static fixed structure to a dynamic reconfigurable structure. The modular design allows the system to be adapted to different locations and configurations while maintaining stability during use, embodying the principle of dynamics by enabling the structure to change state between deployment and relocation.
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
The system effectively removes water and other liquids from bulk granular materials through natural aspiration and vibration, supporting heavy equipment and allowing for easy relocation, while being cost-effective and environmentally friendly.
Implementation Method 1
On the underside of the steel plate a pneumatic vibrator is mounted and connected to a source of pressurized air located external to the rigid boxes. In operation the pneumatic vibrators driven by pressurized air vibrate and causes the rigid boxes contouring the pneumatic vibrators to also vibrate.
Implementation Method 2
The location of a vibrating portable drainage system for bulk granular materials that incorporates the present invention is on a graded slope of approximately 2 to 3 degrees. On the downside of the graded slope is a perforated header pipe.
Data Source
AI summary
A plurality of modular units are connected together on a slightly sloped drainage field with a perforated header pipe at the lower side conveying water away from the drainage system. An impermeable flexible liner cushioned on both sides is located below the modular units. The modular units are each made up of rigid boxes that have connecting cross slots at the bottom thereof and vertical perforations there through. The rigid boxes are lined with a drainage fabric that is site specific and have an expanded geosynthetic material therein, which is held in place when filled with porous granular material. High flexural strength mats are connected together over the tops of the modular units. An air inlet pipe connects air to the cross slots, down the sloped drainage field, to the header pipe to drain water from the bulk granular material resting on the high flexural strength mats. Some of the modular units have a pneumatic vibrator connected to a source of pressurized air. The entire system may be quickly disassembled, moved to a different location, and reassembled with the number of modular units being changed according to the circumstances.