Agricultural Fluid Spraying System Pressure Damping
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Solution Overview
Problem
Existing agricultural spraying systems struggle to maintain a constant fluid pressure across varying numbers of spray nozzles, leading to inefficient fluid use and potential over-treatment of crops or surfaces.
Innovation Solution
A fluid spraying system that includes a tank, pump, spray nozzles, flow passage regulation means, and pressure damping means, which allows for the adjustment of fluid flow and pressure to maintain a constant operating pressure across active nozzles, while diverting excess fluid back to the tank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the number of spray nozzles is reduced to save fluid, then fluid consumption is reduced, but fluid pressure becomes unstable
Solution Approach 1:
A flow regulator acts as an intermediary device between the pump and spray nozzles, mediating the fluid flow to maintain stable pressure even when nozzles are deactivated. The regulator adjusts flow dynamically to compensate for changes in nozzle configuration, preventing pressure instability.
Solution Approach 2:
The system changes the flow parameter dynamically based on the number of active nozzles. When nozzles are deactivated, the flow regulator adjusts the flow rate to maintain constant pressure, transforming the static flow condition into a dynamic adaptive condition.
2Loss of substance
If flow passage regulation means are deactivated to save fluid, then fluid saving is achieved, but pressure variations occur in the spray line
Solution Approach 1:
The system employs feedback control where the state of flow passage regulation means is monitored, and the flow regulator receives signals to adjust flow accordingly. When regulation means are deactivated, the feedback mechanism triggers flow adjustment to compensate for pressure variations.
Solution Approach 2:
The flow regulator serves as an intermediary that decouples the relationship between nozzle deactivation and pressure variation. It absorbs the shock of sudden flow changes and maintains pressure stability independently of nozzle configuration changes.
3Quantity of substance
If all spray nozzles operate continuously, then complete coverage is achieved, but fluid waste increases on already treated areas
Solution Approach 1:
The system transitions from a static configuration where all nozzles operate continuously to a dynamic configuration where nozzle operation is adjusted in real-time. Flow passage regulation means are deactivated in areas that have already been treated, while remaining active in untreated areas, optimizing both coverage and waste reduction.
Solution Approach 2:
The spray system is segmented into independently controllable sections with individual flow passage regulation means. This allows selective deactivation of specific nozzles or groups of nozzles based on treatment status, preventing fluid waste in already treated areas while maintaining coverage in untreated areas.
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 effectively maintains a constant fluid pressure across active nozzles, optimizing fluid use and preventing over-treatment, while also allowing for real-time regulation of fluid ejection based on crop or surface conditions.
Implementation Method 1
pressure damping means, which are connected to the spray line between the flow volume regulation means and the flow passage regulation means and are configured to dampen pressure peaks and dips of a first spray flow volume
Data Source
Figure 1~2
AI summary
Fluid spraying system, adapted to be mounted on an agricultural vehicle, whether self-propelled, or as a trailer propelled by another vehicle, used to treat an agricultural or forestry crop or an agricultural or forestry surface, which allows maintaining a substantially constant pressure of the fluid to be sprayed, regardless of the number of spray nozzles in operation. Also objects of the invention are a method for calibrating the operating point of the fluid spraying system, as well as a method for calibrating pressure damping means used in said fluid spraying system.