Micro-Injection Actuator Preload Adjustment for Precise Fluid Ejection
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Solution Overview
Problem
Existing fluid micro-injection devices face issues with inaccurate adjustment of impact force for fluid ejection, high maintenance costs due to wear on moving parts, and cumbersome installation and disassembly processes, leading to inefficient fluid ejection.
Innovation Solution
An execution system for a fluid micro-injection device featuring a base body with a movable executor and an adjustable adjusting member, which allows for precise adjustment of the pre-tightening force of the executor, enabling accurate control of the movable member's displacement and fluid ejection effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible hinge mechanism or operating element is used to perform secondary movement of the closing element, then the fluid micro-injection function is achieved, but both ends of the closing element are worn increasing replacement frequency and maintenance cost
Solution Approach 1:
The patent extracts the wear-prone secondary movement function from the closing element itself and relocates it to a separate lever mechanism. The lever performs the secondary movement independently, allowing the closing element to focus on its primary sealing function without wear from repeated secondary movements, thereby reducing replacement frequency and maintenance costs.
Solution Approach 2:
The patent segments the closing element into two separate components: the closing element itself and the lever. This segmentation allows each component to be optimized for its specific function - the closing element for sealing and the lever for movement - reducing wear on the closing element and facilitating easier replacement of only the lever when wear occurs.
2Device complexity
If the closing element lifting height is not adjustable or adjustment precision is low, then the structure is simple, but the impact force for fluid ejection is not adjustable or inaccurately adjusted resulting in poor fluid ejection effect
Solution Approach 1:
The patent introduces an adjustable lifting height mechanism through the lever's rotatable connection with the closing element. The lever can be positioned at different angles relative to the closing element, dynamically adjusting the lifting height to precisely control the impact force for fluid ejection, while maintaining relatively simple structural implementation.
3Stability of the object's composition
If related mountings are designed for secure installation, then the device stability is improved, but installation and disassembly become cumbersome resulting in low installation efficiency
Solution Approach 1:
The patent segments the mounting structure into detachable components with standardized connection interfaces. The lever and executor can be independently installed and removed from the base body, allowing for quick maintenance and replacement without disturbing the entire device structure, thereby improving installation efficiency while maintaining stability through standardized connections.
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 system provides convenient accuracy adjustment and improved fluid ejection efficiency by allowing for precise adjustment of the pre-tightening force, reducing maintenance costs and simplifying installation and disassembly processes.
Implementation Method 1
an actuator telescopically disposed within the executor mounting cavity, the actuator being connected to a second end of the lever to control movement of the lever, the adjusting member being connected with the actuator to adjust a pre-tensioning force of the actuator; and a controller connected to the actuator to control extension and contraction or draw back of the actuator
Data Source
AI summary
An execution system (100) for a fluid micro-injection device and a fluid micro-injection device are provided. The execution system (100) has a base body (110), a movable member (120), an executor and an adjusting member (130). The adjusting member (130) is disposed in the executor mounting cavity (110) and connected with the executor. The adjusting member (130) is adjustable for adjusting a pre-tightening force of the executor.