Handheld Tree Injection Device Pneumatic Pressure Control
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Solution Overview
Problem
Existing tree injection devices are bulky, manually operated, and operate at constant pressures, lacking a lightweight and easy-to-use automatic solution for injecting agents into trees with adjustable continuous pressure.
Innovation Solution
A hand-held miniature automatic device with an air cylinder for adjustable pressure injection, featuring a clear metering barrel, one-way check valves, and an air flow control valve, allowing for automatic agent injection and weighing between 1-4 pounds, made from materials like plastics or composite materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional tree injection devices are used, then injection function is provided, but the device is bulky and heavy
Solution Approach 1:
The device is divided into separate functional modules: a lightweight body housing, a removable air cylinder, a metering barrel assembly, and a valve system. This segmentation allows each component to be optimized independently for weight reduction while maintaining overall functionality.
Solution Approach 2:
The device uses pneumatic pressure from a compressed air cylinder to drive the injection mechanism, replacing heavier mechanical actuation systems. The air pressure provides the force needed for injection while keeping the overall device weight low.
2Ease of operation
If manual operation is used, then device complexity is reduced, but operator effort and precision are increased
Solution Approach 1:
The device incorporates an adjustable metering barrel with variable stroke length, allowing the injection volume to be dynamically adjusted by the operator. This provides automated precision dosing while maintaining simple manual operation through a single adjustment mechanism.
Solution Approach 2:
The device includes automatic pressure regulation and flow control mechanisms that self-adjust during operation. The metering barrel automatically controls the injection rate and volume based on its pre-set position, reducing the need for continuous manual intervention.
3Adaptability or versatility
If constant pressure injection is used, then device simplicity is maintained, but adaptability to different tree conditions is reduced
Solution Approach 1:
The device allows adjustment of the air pressure parameter within a controlled range to adapt to different tree sizes, species, and injection requirements. The metering barrel stroke length can also be varied to change the injection volume parameter, providing versatility without complex control systems.
4Measurement precision
If precise dosing is implemented, then injection accuracy is improved, but device complexity increases
Solution Approach 1:
The metering barrel is pre-filled with the exact volume of injection solution required before use. The operator simply adjusts the barrel to the desired dose level and performs a single injection action, achieving precise dosing without complex measurement or control mechanisms during the injection process.
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
Enables efficient, lightweight, and adjustable pressure injection of tree agents, reducing operator effort and accommodating various viscosities and tree conditions, while ensuring precise dosing and minimizing shock to the tree.
Implementation Method 1
an air cylinder 22 that automatically injects the agent into the tree
Implementation Method 2
uses one way check valves 11, 14 to allow for loading and discharging the device
Implementation Method 3
The air flow control valve 8 may be used to shut the system down while activated. By slowly opening the valve 8, the user is able to bleed out any trapped air and prime the system
Data Source
AI summary
A method of using a hand-held miniature device for injecting an agent into a tree with continuous pressure that is adjustable. The device features one-thumb on/off switch operation for a metered dose, precise dose measuring, and air-powered injection in a lightweight device. The on/off switch does not need to be held in the on position by a user.