Mobile Centrifugal Separator for Manure Fractionation
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Solution Overview
Problem
Existing methods for recycling manure from livestock breeding facilities, such as stationary decanter centrifuges, are costly and inaccessible to smaller farms, requiring an efficient, lightweight, and mobile device for fractionating manure with high moisture levels.
Innovation Solution
A mobile, autonomous centrifugal separator with a rotating screen drum and screw mechanism that reduces lumps, mixes, and separates influent into liquid and solid fractions using centrifugal forces, allowing for continuous operation and internal recycling of liquid, with adjustable angles and energy-efficient design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stationary decanter centrifuges are used for manure fractionation, then separation effectiveness is improved, but cost and accessibility deteriorate
Solution Approach 1:
The centrifugal separator is divided into modular components including a separate motor unit, centrifugal separation chamber, screw conveyor, and discharge mechanisms. This segmentation allows for reduced-scale construction and simpler manufacturing while maintaining effective separation functionality, making it accessible to smaller farms
Solution Approach 2:
The design employs simpler, less expensive materials and construction methods compared to traditional stationary decanter centrifuges. The portable nature of the device allows for easier replacement and lower initial investment costs, reducing the financial barrier for small-scale operations
2Ease of operation
If lightweight mobile design is implemented, then ease of operation and flexibility are improved, but structural strength and stability deteriorate
Solution Approach 1:
The device transitions from a stationary to a mobile configuration, incorporating wheels or skids for transportation. The structural design accommodates this dynamic requirement by using appropriate materials and construction methods that provide sufficient strength for operation while enabling easy relocation, thus balancing structural integrity with operational flexibility
Solution Approach 2:
Different parts of the device have different structural characteristics optimized for their specific functions. The mobile components use lighter materials where sufficient strength is needed, while the centrifugal separation chamber maintains the necessary structural integrity for effective operation. This localized optimization allows mobility without compromising critical structural strength
3Productivity
If continuous operation is implemented, then productivity is improved, but energy consumption deteriorates
Solution Approach 1:
The screw conveyor continuously transports the manure mixture through the centrifugal separation chamber, and the discharge mechanisms continuously remove solid and liquid fractions. This continuous operation maintains high productivity by eliminating idle time and ensuring constant processing capability
Solution Approach 2:
The device incorporates adjustable parameters such as rotation speed of the centrifugal chamber and screw conveyor, which can be optimized for different operating conditions. By adjusting these parameters, the system maintains efficient energy consumption while preserving continuous operation capability and productivity
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 device efficiently separates solid particles, reduces moisture in the solid fraction, is lightweight, energy-efficient, and cost-effective, enabling flexible operation and production of biosolids for environmental benefits like fertilization and biogas production.
Implementation Method 1
The water is pushed out by the centrifugal forces through a rotating screen drum
Implementation Method 2
The crusher, which is a grinding mechanism consisting of the dowels attached to axle and the incasing tube, is designed to reduce the lumps in the influent
Data Source
AI summary
The combined centrifugal separator with supplementary work units is an autonomous stationary or mobile complex apparatus, which is related to the separation of non-uniform granular or fibrous product, such as manure pulps, fruit pulps, sugar contained pulps, pulps for the medicine, etc., from the liquid in which it is carried. The screen, the screen scraper, and the driving shaft, which has the screw, the crusher and the mixer located on it, all have one common axis. However, all three rotate with different speeds around it. They are connected to one motor, and have a transmission system using pulleys and gears. Part of the liquid remainder may be used for internal recycling.