Soil Slurry Preparation for Drying-Free Nutrient Analysis
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Solution Overview
Problem
Existing soil sampling processes are inefficient as they require drying and grinding of samples, which are time-consuming and labor-intensive, and do not allow for simultaneous analysis of multiple samples.
Innovation Solution
An automated computer-controlled sampling system that processes soil samples in their 'as collected' condition, creating a slurry with water and filtering it for chemical analysis, enabling simultaneous and rapid analysis of multiple samples for various chemical properties without the need for drying and grinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional drying and grinding processes are used for soil samples, then sample preparation is thorough, but processing time is excessive and labor intensity is high
Solution Approach 1:
The patent changes the physical state parameter of the soil sample from solid (requiring drying and grinding) to slurry (liquid suspension). By adding water to create a slurry, the sample can be processed without drying and grinding, dramatically reducing preparation time while maintaining analytical quality through subsequent filtration and centrifugation steps.
Solution Approach 2:
The patent replaces the mechanical drying and grinding system with a chemical/physical slurry preparation system. Instead of using mechanical force to dry and grind samples, the system uses water addition, mixing, and centrifugation to achieve sample preparation, thereby reducing both time and labor requirements.
2Measurement precision
If traditional sequential processing is used for soil samples, then each sample is analyzed individually, but throughput and productivity are low
Solution Approach 1:
The patent segments the sample processing into distinct functional modules: slurry preparation, filtration, centrifugation, and analysis. This modular approach allows multiple samples to be processed through each stage in sequence while enabling parallel processing capabilities, thereby increasing throughput without compromising analytical accuracy.
Solution Approach 2:
The patent performs preliminary slurry preparation and filtration before analysis, creating a standardized intermediate form that can be efficiently processed through multiple samples. This preliminary action enables batch processing and reduces the time required for each individual analysis while maintaining precision.
3Adaptability or versatility
If manual sample processing is used, then flexibility is maintained, but automation level and operational efficiency are low
Solution Approach 1:
The patent designs a universal automated system that can handle multiple sample types (soil, vegetation, manure) and perform multiple functions (slurry preparation, filtration, centrifugation, analysis) through a single integrated platform. This multi-functional design maintains versatility while achieving high automation, eliminating the need for separate manual processing for each sample type.
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 allows for rapid and efficient analysis of soil samples, as well as other agricultural samples like vegetation and manure, improving the speed and accuracy of nutrient and chemical property determination, thereby optimizing crop production.
Implementation Method 1
a mixer-filter apparatus which mixes the collected raw soil sample in the 'as sampled' condition (e.g. undried and unground) with water to form a sample slurry
Implementation Method 2
The mixer-filter apparatus then filters the slurry during its extraction from the apparatus
Implementation Method 3
centrifugating the slurry sample to yield a clear supernatant
Implementation Method 4
sensing or analysis for detection of the analytes and/or chemical properties such as via colorimetric analysis
Data Source
AI summary
A coulter assembly for collecting soil samples from an agricultural field in one embodiment comprises an annular collection blade configured for penetrating soil to capture a sample, an annular cam ring configured for stationary mounting to a frame of an agricultural vehicle and comprising a cam track, a blade hub coupled to the blade for rotatably supporting the annular collection blade from the annular cam ring, and a movable sample collector mounted to the annular collection blade. The moveable sample collector is configured and operable for extracting a soil sample as the annular collection blade is rotated through the soil. The moveable sample collector in one embodiment comprises a piston mechanism including a cylinder and rod movably disposed therein which actuated by the annular cam ring to alternatingly open and close a collection end of the cylinder as the annular collection blade rotates through the soil.