Crop Spraying Device With Auxiliary Air Nozzles
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Solution Overview
Problem
Existing spraying devices for crops lose significant amounts of spray liquid to the environment due to inadequate air flow guidance, resulting in inefficient distribution and reduced coverage, especially at low movement speeds.
Innovation Solution
The spraying device incorporates additional nozzles that blow air in the same direction as the primary nozzles, positioned on a secondary blade parallel to the suspension element, enhancing air flow and guiding spray liquid more effectively onto the crops by creating a turbulent air flow that prevents liquid from reaching the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the nozzles are positioned on the blade and rely on wind-generated air flow, then the device structure is simple, but spray liquid is lost to the environment (soil, field slots)
Solution Approach 1:
The device segments the air flow generation function into two independent nozzle groups: first nozzles for generating primary air flow, and second nozzles for generating secondary air flow. This segmentation allows each nozzle group to be optimized for specific functions, improving spray liquid guidance while maintaining structural simplicity through modular design.
Solution Approach 2:
The patent introduces air as an intermediary medium to transport and guide the spray liquid. By using two sets of nozzles to generate coordinated air flows, the system creates a controlled air current that acts as a mediator, directing spray liquid onto crops and preventing loss to soil and field slots.
2Use of energy by moving object
If the sprayer moves at low speeds, then energy consumption is reduced, but air flow is insufficient to guide spray liquid to crops
Solution Approach 1:
The first nozzles generate preliminary air flow that creates initial turbulence and prepares the air environment before the spray liquid is discharged. This preliminary action ensures that even at low vehicle speeds, there is sufficient air movement to carry and guide the spray liquid onto the crops effectively.
Solution Approach 2:
The patent changes the parameters of air flow by using two distinct nozzle configurations that produce different flow characteristics. The first nozzles create one pattern of air flow while the second nozzles create a complementary pattern, together achieving sufficient air flow velocity and turbulence at low operating speeds without increased energy consumption.
3Quantity of substance
If spray liquid reaches the bottom before contacting crops, then coverage is improved, but spray liquid is wasted and cannot perform its operation
Solution Approach 1:
The patent applies pneumatic principles by using compressed air from the nozzles to suspend and transport spray liquid droplets. The air flow acts as a carrier gas, keeping the liquid suspended in the air stream and directing it precisely onto the crops, preventing premature contact with the ground and ensuring reliable delivery of the full quantity of spray liquid to the target.
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
This configuration ensures better spray liquid distribution, achieving optimal coverage even at low speeds by trapping the liquid between air currents, minimizing loss to the environment and ensuring the liquid reaches the crop leaves.
Implementation Method 1
The air flowing underneath the blade takes along the spraying liquid to the crops
Implementation Method 2
the air flow with entrained spray liquid will come into turbulence in the crops
Implementation Method 3
the air flow deflected by the further blade will flow under the nozzles and will guide the spray liquid coming out of the nozzles better to the crops
Data Source
Figure 1
Figure 2
AI summary
A spraying device (1) has an elongated suspension element (2) which is coupled to a frame (4) which can be mounted on an agricultural tractor. During operation, this frame extends substantially horizontally and perpendicularly to the direction of travel of the agricultural tractor. A plurality of blade carriers (5) with a blade (7) on them are attached to the suspension element. Nozzle carriers (9) are also attached to the suspension element (2) on which nozzles (11) are present for spraying liquid on crops. Further, an elongate further blade (13) is attached to the nozzle carriers. Further, the spraying device has further nozzles (19) for blowing air. These further nozzles (19) are also connected to the nozzle carriers (9) and are directed in the same direction as the nozzles (11). The air flow (25) from the further nozzles (19) supports the air flow (21) due to the wind so that the spray liquid (23) is fed better to the crops.