Piston-Driven Material Supply With Hydraulic Pressure Feedback
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Solution Overview
Problem
The supply of liquid materials, such as quantum dot materials, is often uneven due to expansion properties of gas or inertia, leading to inconsistent spraying during the supply process.
Innovation Solution
A material supply system comprising a tank, piston plate, pushing module, pressure sensor, and controller, which maintains a predetermined pressure threshold during supply and replenishment procedures by actuating the piston plate and adjusting the movement speed based on pressure sensing values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If compressed gas or inherent weight of liquid materials is used for supply, then the supply mechanism is simple, but the liquid material cannot be supplied smoothly resulting in uneven spraying
Solution Approach 1:
The patent applies hydraulic principles by using a piston plate that moves linearly to directly push liquid material out of the tank. This mechanical-hydraulic approach replaces the gas-based pneumatic system, providing smooth and consistent liquid material supply without the expansion issues caused by compressed gas.
2Speed
If compressed gas is used to supply liquid material, then the supply speed can be increased, but the expansion properties of gas cause uneven spraying
Solution Approach 1:
The system transitions from gas-based pneumatic supply to a direct mechanical-hydraulic pushing mechanism. The piston plate directly contacts and pushes the liquid material, eliminating gas expansion effects and ensuring uniform spray composition while maintaining supply speed through controlled piston movement.
Solution Approach 2:
The pressure sensor detects the pressure of liquid material and provides feedback to the controller. The controller adjusts the piston plate's movement speed based on this feedback to maintain constant pressure, ensuring uniform spray composition even at high supply speeds.
3Productivity
If the piston plate moves quickly to increase productivity, then the supply rate increases, but the pressure becomes unstable affecting spray consistency
Solution Approach 1:
The system employs dynamic control where the piston plate's movement speed is continuously adjusted based on real-time pressure feedback. This allows the system to maintain stable pressure while adapting the supply rate to meet productivity requirements, resolving the contradiction between speed and stability.
Solution Approach 2:
The pressure sensor continuously monitors liquid material pressure and provides feedback to the controller. The controller dynamically adjusts the piston plate's movement to maintain constant pressure, enabling high productivity while ensuring spray consistency through active pressure regulation.
4Device complexity
If a simple supply system is used, then the device complexity is low, but the control precision over pressure and flow rate is insufficient
Solution Approach 1:
The system incorporates a pressure sensor that provides real-time feedback to the controller, which adjusts the piston plate's movement accordingly. This feedback mechanism enables precise pressure control without requiring complex system architecture, maintaining simplicity while achieving high control precision.
Solution Approach 2:
The system uses self-regulating feedback control where the pressure sensor automatically detects pressure deviations and the controller autonomously adjusts the piston movement to correct them. This self-service mechanism provides precise pressure control without requiring complex external intervention or complicated system design.
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
Ensures smooth and consistent supply of liquid materials by maintaining hydraulic pressure, ensuring stable flow rates and even distribution throughout the process.
Implementation Method 1
The pressure sensor is used to detect a pressure sensing value of the liquid chamber
Implementation Method 2
the controller drives the pushing module to move the piston plate to push liquid material to the discharge port
Data Source
AI summary
A material supply system includes a tank, a piston plate, a pushing module, a pressure sensor, and a controller. The tank has an accommodation space and a discharge port. The piston plate is disposed in the accommodation space and is displaceable between a first position and a second position when actuated. A liquid chamber is defined between the piston plate and the discharge port. The pushing module, when driven, actuates the piston plate. The pressure sensor is configured to detect a pressure sensing value within the liquid chamber. The controller is configured to drive the pushing module during a supply procedure to maintain the pressure sensing value at a predetermined pressure threshold.