Green Sand Kneading System Moisture Control
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Solution Overview
Problem
Existing water supply and kneading systems for green sand lack stability in the properties of kneaded sand due to inadequate control over the amount of water supplied.
Innovation Solution
A system comprising a weighing hopper, kneading machine, sand loading means, water supply device, moisture sensor, and kneading control device that measures moisture content and adjusts water supply and sand loading accordingly to achieve stable kneaded sand properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional water supply and kneading systems are used, then the kneading process can be performed, but the amount of water supplied is not precisely controlled resulting in unstable properties of kneaded sand
Solution Approach 1:
The patent replaces conventional mechanical water supply control methods with a moisture sensor-based detection system and automated control mechanism. The moisture sensor detects the moisture content of green sand, and this information is used to automatically adjust the water supply amount, substituting manual or mechanical estimation with precise electronic sensing and control.
Solution Approach 2:
The patent implements a feedback control system where the moisture sensor continuously monitors the moisture content of green sand, and this measured value is fed back to the control system. The control system then adjusts the water supply amount based on this feedback, creating a closed-loop control that ensures stable kneaded sand properties by dynamically compensating for variations in sand moisture.
2Ease of operation
If the amount of water supplied is increased to ensure adequate moisture, then the sand can be properly kneaded, but the properties of kneaded sand become unstable due to over-watering
Solution Approach 1:
The moisture sensor provides real-time feedback on the actual moisture content of the green sand, allowing the control system to precisely adjust water supply to match the actual needs of the sand. This prevents both over-watering and under-watering, ensuring consistent kneaded sand properties while maintaining ease of operation.
Solution Approach 2:
The patent implements dynamic water supply control that adapts to changing moisture conditions. Instead of using a fixed water supply rate, the system continuously adjusts the water supply amount based on real-time moisture sensor readings, making the water supply process dynamic and responsive to actual sand conditions.
3Device complexity
If manual control of water supply is used, then the system is simple to operate, but the water-to-sand ratio cannot be precisely controlled
Solution Approach 1:
The patent replaces manual water supply control with an automated control system that uses a moisture sensor to detect sand moisture content and automatically adjusts the water supply. This substitution of manual operation with electronic sensing and automated control achieves precise water-to-sand ratio control while maintaining ease of operation through automatic control.
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 ensures stable properties of kneaded sand by accurately controlling the water-to-sand ratio and water supply, enhancing the consistency of the kneading process.
Implementation Method 1
a moisture sensor that comprises a pair of electrodes and measures the moisture content of the green sand stored in the weighing hopper by measuring the electric potential difference between the electrodes
Data Source
AI summary
A water supply and kneading system for green sand, including: a weighing hopper that stores green sand that has been weighed; a kneading machine that kneads the green sand and water; a sand loading means for releasing the green sand in the weighing hopper into the kneading machine, or shutting off the release; a water supply device that supplies water to the green sand in the kneading machine; a moisture sensor that includes a pair of electrodes and measures the moisture content of the green sand stored in the weighing hopper by measuring an electric potential difference between the electrodes; and a kneading control device that controls the amount of water supplied by the water supply device and controls the sand loading means on the basis of the output of the moisture sensor.