Remote Pump Speed Control for Fluid Dispensing
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Solution Overview
Problem
Existing fluid dispensing systems require operators to physically return to the pump to adjust speed, which is inefficient and disrupts continuous application processes, especially when handling paints and viscous materials like drywall mud.
Innovation Solution
A fluid dispensing system with remote controls that communicate via wires or radio frequency to regulate pump speed, allowing incremental and rapid adjustments using 'up' and 'down' buttons, with a potentiometer setting a maximum limit to ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pump speed control is located at the pump itself, then the pump speed can be adjusted, but the operator must physically return to the pump to make adjustments, disrupting continuous application processes
Solution Approach 1:
The control system is segmented into two parts: a control unit located at the application tool and a pump unit. The control unit contains the speed control interface that communicates with the pump via wireless communication, allowing the operator to adjust pump speed from the application location without returning to the pump.
Solution Approach 2:
A wireless communication system acts as an intermediary between the control unit at the application tool and the pump motor controller. This intermediary transmits control signals and data without requiring physical connection or operator movement, enabling remote pump speed adjustment.
2Productivity
If the operator can adjust pump speed from a remote location, then continuous operation is maintained, but additional control systems and communication interfaces are required
Solution Approach 1:
The control unit is integrated into the application tool, serving multiple functions: it controls the application mechanism and simultaneously manages pump speed adjustment through wireless communication. This multi-functionality reduces the need for separate dedicated control devices.
Solution Approach 2:
The system incorporates feedback mechanisms where the control unit receives information from the pump about operational status and fluid delivery conditions, automatically adjusting pump speed to maintain optimal application parameters without requiring complex manual control systems.
Data Source
Figure 1
AI summary
A pump 24 with speed control is utilized. A dispenser 12 may have a trigger 16 which actuates a valve 16. Dispenser control 18 has "up" and "down" buttons, 20 and 22 respectively. The controls 28 (comprising elements 18, 20 and 22) for the pump 24 are remote from pump 24. The controls communicate with the pump via wires or radio frequency (RF) 26 to regulate pump speed. Quick button (20 and 22) presses will incrementally change the flow setting while long button (20 and 22) presses will change the settings at a higher rate. This control method can also be tied to the controls located on the pump 24. The potentiometer 30 on the pump 24 will set a max setting, and any adjustments at the valve can go below this setting and back up to it, but never exceed it.