Spray Boom Nozzle Cap Offsets for Row-Specific Field Spraying
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Solution Overview
Problem
Conventional agricultural sprayers face challenges in achieving cost-effective and precise row-specific application of spray liquids due to the need for costly and maintenance-intensive actuators to adjust application elements along the spray boom, especially when plant row spacings deviate from the predetermined nozzle spacing.
Innovation Solution
The spraying device employs nozzle caps that create a grid pattern of impact zones with varying offsets, allowing the spray jets to form a row grid that compensates for differences in nozzle and row grid spacing without requiring actuators, using detachable caps that deflect the spray direction to adjust impact areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If actuators are used to adjust application elements along the spray boom to achieve row-specific application, then application precision is improved, but device complexity and cost increase
Solution Approach 1:
The spray boom is divided into multiple independent application elements (nozzles), each capable of being individually adjusted or configured. This segmentation allows precise control of spray application at different locations along the boom without requiring complex actuation systems for the entire assembly.
Solution Approach 2:
The application elements are designed with adjustable properties (such as nozzle angle, offset, or flow rate) that can be dynamically modified to adapt to different row spacings. This dynamic adjustability achieves precise row-specific application while avoiding the need for complex mechanical actuators by using simpler, more flexible adjustment mechanisms.
2Adaptability or versatility
If actuators are used to move application elements along the spray boom, then adaptability to different row spacings is improved, but maintenance requirements increase
Solution Approach 1:
The application elements are designed as simple, easily replaceable components that can be quickly swapped or adjusted if malfunction occurs. This approach reduces maintenance complexity and costs compared to maintaining complex actuator systems, while still providing the necessary adaptability to different row spacings through straightforward adjustment mechanisms.
Solution Approach 2:
The application elements incorporate self-adjusting or user-adjustable features that allow operators to modify spray patterns for different row spacings without requiring complex actuation systems. This self-service capability reduces maintenance requirements while maintaining adaptability to various agricultural conditions.
3Device complexity
If fixed nozzle spacing is used along the spray boom, then device simplicity is maintained, but adaptability to non-standard row spacings deteriorates
Solution Approach 1:
The application elements are designed with variable parameters (such as nozzle offset distance, spray angle, or flow rate) that can be changed to adapt to different row spacings. This allows the simple fixed-structure spray boom to achieve versatility by modifying operational parameters rather than changing the physical structure.
Solution Approach 2:
While maintaining a simple fixed physical structure, the system achieves adaptability through dynamic adjustment of spray parameters (angle, offset, flow rate) at each application element. This dynamic parameter adjustment allows the simple device design to handle various row spacing configurations effectively.
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 approach enables efficient and cost-effective row-specific application of spray liquids by adapting the spray pattern to match plant row spacings, reducing the need for complex actuators and enhancing operational flexibility.
Implementation Method 1
at least some of the multiple application elements are each equipped with a nozzle cap designed to create an offset, i.e., a displacement, of the spray liquid impact zone along the longitudinal direction of the spray boom
Data Source
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AI summary
The invention relates to a spraying device for an agricultural field sprayer for the metered application of spray liquid on agricultural land. The invention further relates to an agricultural field sprayer with such a spraying device and a method for adapting a spraying device for row-specific application of spray liquid. The method comprises adapting the impact areas (10) of the spray liquid discharged by the application elements during an application process to a row grid for row-specific application by creating an offset in the longitudinal direction of the spray boom of the impact areas of the spray liquid by means of nozzle caps. The spraying device (1) comprises a spray boom (2) having several application elements (4a, 4b, 4c) which are spaced apart from one another in the longitudinal direction (B) of the spray boom (2) at a predetermined nozzle grid spacing (5).In this arrangement, the impact areas (6) of the spray liquid discharged by the application elements (4a, 4b, 4c) during an application process form a grid of rows, the spacing (8) of which differs from the nozzle spacing (5) or from an integer multiple of the nozzle spacing (5). To generate the different row spacing (8), at least some of the multiple application elements (4b, 4c) are each equipped with a nozzle cap (9b, 9c) designed to create an offset (10b; 10c) of an impact area (6) of spray liquid in the longitudinal direction (B) of the spray boom (2).