Drum-Mounted Fluid Transfer Pump With Magnetic Pressure Shutoff
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Solution Overview
Problem
Conventional fluid transfer systems from drums to dispensing points face issues with spillage, overfilling, and hose-related messes due to the manual operation of hand-actuated pumps and trigger-operated dispensing guns, which are difficult to coordinate effectively.
Innovation Solution
An on-demand fluid transfer pump with a power head and stem system, featuring an electric pump and flow control unit with magnetic sensors that automatically switch the pump on and off based on pressure changes, eliminating the need for manual operation and hoses, and ensuring tidy and safe fluid transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual hand-actuated pumps and trigger-operated dispensing guns are used for fluid transfer, then the system is simple in structure, but it is difficult to coordinate operation resulting in spillage and overfilling
Solution Approach 1:
The system automatically controls the pump operation based on fluid pressure detection. The controller monitors pressure signals from the fluid chamber and autonomously activates or deactivates the pump without requiring manual coordination between the operator and pump operation, thereby preventing spillage and overfilling while maintaining operational simplicity
Solution Approach 2:
The system incorporates a feedback mechanism where pressure sensors detect fluid pressure changes in the chamber and transmit signals to the controller. The controller uses this feedback information to automatically adjust pump operation, creating a closed-loop control system that ensures accurate fluid transfer without manual coordination
2Reliability
If hoses are used to connect drums and hand-actuated pumps, then the system is flexible in operation, but the hoses are untidy and prone to leaking
Solution Approach 1:
The pump is directly integrated with the drum as a single unified unit, eliminating the need for separate hoses and connectors. The pump draws fluid directly from the drum through an integrated suction mechanism, resulting in a tidier system with fewer potential leak points while maintaining operational flexibility
Solution Approach 2:
The hoses and external connections are completely removed from the system. The fluid transfer function is achieved through direct integration of the pump with the drum, extracting the problematic hose component from the system while preserving the essential fluid transfer capability
3Reliability
If automatic flow control is implemented using magnetic sensors and plunger mechanisms, then spillage and overfilling are prevented, but the device complexity increases
Solution Approach 1:
The system replaces complex mechanical flow control mechanisms with a simpler electronic control system. Instead of using elaborate mechanical valves or flow restrictors, the invention uses magnetic sensors to detect fluid levels and a controller to manage pump operation, achieving accurate fluid dispensing through electronic rather than mechanical means
Solution Approach 2:
The system controls fluid transfer by monitoring and responding to pressure parameter changes in the fluid chamber. The magnetic sensors detect pressure variations that indicate fluid level changes, and the controller adjusts pump operation based on these parameter changes, providing accurate flow control through parameter-based regulation rather than complex mechanical structures
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 solution provides a more efficient, spill-free, and safer fluid transfer process by automatically controlling the electric pump's operation, reducing the risk of overflow and contamination, and allowing for direct mounting on drums without hoses, enhancing user safety and operational efficiency.
Implementation Method 1
a magnetic plunger reciprocable within the plunger chamber in response to pressure changes in the fluid chamber between a top position adjacently beneath the first magnetic sensor and a bottom position spaced away below the first magnetic sensor
Implementation Method 2
the flow control unit comprises a first magnetic sensor; and wherein the stem comprises: a suction tube in fluid communication with the electric pump and the fluid supply; a fluid chamber having an inlet in fluid communication with the fluid supply and an outlet in fluid communication with a fluid dispenser; a plunger chamber in fluid communication with the fluid chamber between the inlet and the outlet; and a magnetic plunger reciprocable within the plunger chamber
Data Source
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AI summary
An on-demand fluid transfer pump, comprising: a power head removably connectable on top of a stem that is removably connectable to a fluid supply; wherein the power head comprises an electric pump and a flow control unit configured to automatically switch the electric pump on and off; wherein the flow control unit comprises a magnetic sensor; and wherein the stem comprises: a suction tube, a fluid chamber, a plunger chamber, and a magnetic plunger reciprocable within the plunger chamber in response to pressure changes in the fluid chamber, wherein the magnetic plunger is biased to deactuate the magnetic sensor to switch on the electric pump to pressurise the fluid supply for delivery to the fluid dispenser; and wherein the magnetic plunger is pushed when pressure in the fluid chamber rises to thereby actuate the magnetic sensor to switch off the electric pump.