Replaceable Liquid Subsystem for Unmanned Spraying Devices
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Solution Overview
Problem
Existing spraying devices for chemical treatment on unmanned vehicles are heavy, non-standardized, and pose safety risks due to personnel contact with hazardous liquids, lack self-diagnosis capabilities, and have unstable center of gravity, making them unsafe and unreliable for automated systems.
Innovation Solution
A lightweight, hermetically sealed liquid subsystem with a replaceable bag design, contactless tags for tracking, and automated refilling using compressed gas, integrated with a microprocessor-based pressure regulator and sensors for precise control and safety features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a pump is used to transport liquid in the spraying device, then the liquid can be delivered to the sprayers, but the weight of the device increases significantly
Solution Approach 1:
The patent replaces the mechanical pump with a pneumatic system using a compressed air tank and nozzle assembly. Compressed air is directed through nozzles to create a vacuum that draws liquid from the reservoir and delivers it to the sprayers, eliminating the need for a heavy mechanical pump while maintaining liquid transport capability
Solution Approach 2:
The patent substitutes the mechanical pump system with a pneumatic field-based system using compressed air and vacuum principles. This replaces direct mechanical contact and moving parts with a field-based pneumatic mechanism, reducing weight and complexity
2Stability of the object's composition
If the liquid subsystem is stationary and integrated into the device, then the structure is stable, but it cannot be easily removed or replaced
Solution Approach 1:
The patent divides the spraying device into distinct modular components: a reusable main body containing the compressed air tank and control systems, and a replaceable liquid subsystem consisting of the reservoir and liquid delivery components. This segmentation allows the liquid subsystem to be easily removed and replaced while maintaining structural stability during operation
Solution Approach 2:
The patent creates a dynamic system where the liquid subsystem can transition between fixed (during operation) and movable (during replacement) states. Quick-connect interfaces enable rapid transformation between these states, providing both operational stability and ease of maintenance
3Ease of operation
If personnel manually refill and service the spraying device, then the device can be maintained, but personnel are exposed to hazardous liquids
Solution Approach 1:
The patent implements automated refilling capabilities where the device can refill its own liquid reservoir without personnel intervention. The system uses automated valves, pumps, or pneumatic mechanisms to transfer liquid from external containers to the internal reservoir, eliminating the need for manual handling of hazardous substances
Solution Approach 2:
The patent introduces automated control systems and sealed transfer mechanisms as intermediaries between personnel and hazardous liquids. These intermediaries handle all liquid transfer operations, creating a barrier that protects personnel from direct exposure while maintaining device maintainability
4Device complexity
If the liquid subsystem is not hermetically sealed, then the structure is simpler, but hazardous liquid can leak and contaminate the environment
Solution Approach 1:
The patent employs hermetically sealed components and connections throughout the liquid subsystem, creating a closed environment that prevents hazardous liquid from escaping into the surrounding environment. This sealed approach ensures that even if the device is damaged, liquid containment is maintained
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 safe, reliable, and automated spraying system with reduced weight, stable center of gravity, and minimized personnel exposure to hazardous liquids, enabling precise control and efficient operation of unmanned vehicles.
Implementation Method 1
a gasbag (4), provided with a gas inlet channel (35), wherein the gasbag (4) is embedded into the basket (6) together with the reservoir (7) and is capable of transferring gas pressure therein to the liquid in the reservoir (7)
Implementation Method 2
Each liquid hose (21) of the liquid subsystem at one end is hermetically connected to one of the manifold (19) outlet ports and, at the other end, is provided with a lock valve (22), which is closed in a disconnected state
Data Source
AI summary
The invention is intended for the organization of an automated process for spraying of liquid means of chemical treatment from unmanned vehicles, for example, in precise farming systems. The use of a replaceable, marked and hermetically sealed liquid subsystem in the spray device of the invention, along with an integrated self-diagnosis system, using compressed gas energy and a pressure regulator instead of standard pumps, reduces the weight of the spraying device, improves spraying accuracy, ensures personnel safety and accounting of the accumulated life resource of the main units of spraying devices. All this in combination enables to create fully automated spraying systems.