Molten Metal Flow Controller Using Adjustable Orifice Plate
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Solution Overview
Problem
Existing metal melt furnace systems lack accurate and repeatable control over molten metal flow, relying on crude binary ON-OFF control mechanisms that fail to monitor and adjust flow rates effectively, impacting throughput and safety.
Innovation Solution
A discrete molten metal flow controller system with a cylindrical actuator, pivot assembly, and adjustable components that use a fluid flow sensor to remotely control the metal flow through a Melt Furnace tap hole, allowing for precise regulation of metal flow rates and plug positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional automatic tapper with binary ON-OFF control is used, then the device complexity is reduced and ease of operation is improved, but the manufacturing precision and control accuracy of molten metal flow are worsened
Solution Approach 1:
The system transitions from static binary control to dynamic continuous control by using an adjustable orifice plate with variable opening positions. The orifice plate can be positioned at multiple discrete levels to continuously adjust the flow rate, enabling precise control while maintaining operational simplicity through automated positioning mechanisms.
Solution Approach 2:
The invention changes the control parameter from binary (open/closed) to continuous by varying the orifice opening size. This allows the system to regulate molten metal flow rate by adjusting the orifice diameter, providing precise flow control while keeping the control mechanism relatively simple through automated actuation.
2Device complexity
If manual tapper is used, then the device complexity is minimized, but the reliability and safety are worsened due to human exposure to hazards
Solution Approach 1:
The system replaces manual mechanical tapping with an automated mechanical system that uses an adjustable orifice plate controlled by actuators. This substitution eliminates human exposure to molten metal hazards while maintaining relatively simple device architecture through the use of standard automated control components.
3Ease of operation
If automated tapper with plug insertion is used, then the ease of operation is improved and safety is enhanced, but the manufacturing precision and repeatable control of metal flow rate are worsened
Solution Approach 1:
The system uses a dynamic adjustable orifice plate that can be positioned at multiple discrete levels to continuously vary the flow rate. This dynamic adjustment capability provides precise and repeatable flow control while maintaining ease of operation through automated positioning, overcoming the limitations of fixed binary control.
Solution Approach 2:
The adjustable orifice plate mechanism serves multiple functions: it can completely close the tap hole when needed, provide precise flow rate control at various levels, and maintain consistent repeatable control. This multi-functionality replaces the need for separate plug insertion mechanisms while enhancing both ease of operation and control precision.
Data Source
AI summary
A molten metal flow controller (10) for a metal melt furnace having a tap hole (T) to release the molten metal from the furnace, where the controller (10) is configured to controllably release the flow of molten metal through the tap hole (T) using an actuator (14) that controllably moves a plunger (110) into and out of the tap hole (T) in response the increase or decrease in the molten metal flow rate through the tap hole (t) as measured by a sensor (130).