Casting Equipment Electromagnetic Pump Level Control
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Solution Overview
Problem
Current casting equipment lacks precise control over the metal level in distribution reservoirs, which affects the input pressure and quality of cast products, leading to inefficiencies and potential leaks.
Innovation Solution
The casting equipment employs a siphon arrangement with a supply conduit and electromagnetic pump to control the metal level in the distribution reservoir, utilizing under-pressure and level sensors for precise control, and includes a bypass valve and shut-off valve to manage flow and pressure, ensuring consistent metal input pressure to the casting apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional flow control means (valves) are used to control metal flow, then the casting operation can be adjusted, but precise control of metal level in distribution reservoir is difficult leading to unstable input pressure
Solution Approach 1:
The patent replaces conventional mechanical flow control valves with an electromagnetic pump system. The electromagnetic pump (35) provides precise, controlled metal flow from supply reservoir (10) to distribution reservoir (20) by converting electrical energy to mechanical pumping action, enabling accurate metal level control and stable input pressure to the casting apparatus.
Solution Approach 2:
The patent implements a feedback control system using level sensors (40) to detect metal levels in the distribution reservoir (20). The sensor signals are fed back to control the electromagnetic pump (35), creating a closed-loop system that automatically adjusts pumping to maintain the desired metal level and ensure stable input pressure throughout the casting process.
2Reliability
If metal level in distribution reservoir is not precisely controlled, then equipment complexity is reduced, but leakage risks increase and casting quality deteriorates
Solution Approach 1:
The patent replaces imprecise mechanical valve control with an electromagnetic pump system that provides accurate, controllable metal flow. This substitution enables reliable metal level control and leakage prevention through precise pumping action, accepting the necessary increase in device complexity as a trade-off for improved reliability and casting quality.
Solution Approach 2:
The feedback control system with level sensors (40) continuously monitors metal levels and adjusts the electromagnetic pump (35) operation accordingly. This closed-loop control prevents overfilling and leakage while maintaining optimal metal levels for high-quality casting, justifying the increased system complexity through significant reliability improvements.
3Productivity
If conventional casting equipment is used, then device complexity is lower, but casting efficiency and product quality are reduced due to unstable metal flow
Solution Approach 1:
The patent replaces conventional gravity-based or valve-controlled metal flow systems with an electromagnetic pump system. This substitution enables precise control of metal flow rate and level, ensuring stable input pressure to the casting apparatus, thereby significantly improving casting efficiency and product quality despite the increased complexity of the control system.
Solution Approach 2:
The feedback control system with level sensors (40) and electromagnetic pump (35) creates a responsive control mechanism that maintains optimal metal levels and flow rates throughout the casting process. This enables continuous, efficient operation with consistent product quality, justifying the increased device complexity through substantial productivity improvements.
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 allows for precise control of the metal level and input pressure, reducing leakage risks and enhancing the quality and efficiency of the casting process by maintaining a stable metal flow, resulting in higher quality cast products.
Implementation Method 1
at least one electromagnetic pump (35) configured to generate a force in the liquid metal (15)
Implementation Method 2
a siphon arrangement with a supply conduit and electromagnetic pump to control the metal level
Implementation Method 3
utilizing under-pressure and level sensors for precise control
Implementation Method 4
level sensors for precise control
Data Source
Figure 1~2
Figure 3
AI summary
The invention provides a casting equipment (1) for casting melt (15) into a cast product (80) comprising a supply reservoir (10) for supplying the melt (15), a distribution reservoir (20), a casting apparatus (25) having a melt inlet connected to the distribution reservoir (20) for producing the cast product (80), a supply conduit (30) fluidly connecting the supply reservoir (10) and the distribution reservoir (20), an electromagnetic pump (35) provided on the supply conduit (30) and operable to generate a force in the melt (15) in the supply conduit (30), a level sensor (40) for measuring a level of the melt (15) in the distribution reservoir (20) and/or in the supply reservoir (10), a controller operably connected to the pump (35) and the level sensor (40), wherein the supply conduit (30) is sealed or sealable from a pressure of the atmosphere, wherein the controller is configured to control an operation of the pump (35) based on a level signal from the level sensor (40), and wherein, at least during a steady-state casting operation, the casting equipment is configured such that the supply conduit (30) defines a flow path that has a point that is higher than a surface of the melt in the supply reservoir (10) and/or the distribution reservoir (20), and the pump (35) is operated such that the metal level in the distribution reservoir (20) is at a predefined level such as to control a pressure of the melt (15) in the melt inlet of the casting apparatus (25).