Variable-Zone Pneumatic Fertilizer Spreader for Row-Specific Application
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Solution Overview
Problem
Conventional pneumatic fertilizer spreaders are unable to perform row-specific application of granular material due to the wide spacing of distribution elements, which is not feasible for crops with standard row spacings of 25 cm, 50 cm, or 75 cm, limiting their effectiveness in agricultural applications.
Innovation Solution
A pneumatic fertilizer spreader with distribution devices that can generate a variable number of spreading zones, allowing for adjustable spreading patterns, including row-specific application, by using distribution elements with configurable and controllable dividing devices to create multiple spreading substreams and adjust the impact areas, supported by a control system for automated operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If distribution elements are spaced 1.5 meters apart along the spreader boom, then the structure is simpler and easier to manufacture, but row-specific application is not feasible for crops with standard row spacings of 25 cm, 50 cm, or 75 cm
Solution Approach 1:
The patent divides a single distribution element into multiple distribution zones by introducing dividing devices (baffles or deflectors) that split the material flow into several substreams. This segmentation allows one distribution element to serve multiple rows, effectively reducing the functional spacing between distribution points without adding more physical distribution elements to the boom structure.
Solution Approach 2:
The dividing devices are designed to be adjustable, allowing the number and configuration of distribution zones to be dynamically changed based on crop row spacing requirements. This dynamic adaptability enables the same distribution element to serve different row configurations (25 cm, 50 cm, or 75 cm spacing) without requiring structural modifications to the spreader boom.
2Manufacturing precision
If multiple distribution elements are added to achieve closer spacing for row-specific application, then application precision improves, but the number of delivery lines increases making the structure heavier and more complex
Solution Approach 1:
Instead of adding more distribution elements and their associated delivery lines, the patent segments the output of existing distribution elements into multiple zones using dividing devices. This approach achieves the same application precision for row-specific treatment without increasing the number of delivery lines or structural complexity.
Solution Approach 2:
Each distribution element is designed to perform multiple functions by serving multiple rows through its divided zones. A single distribution element with multiple zones can replace what would traditionally require multiple separate distribution elements, each with its own delivery line, thereby reducing overall system complexity while maintaining application precision.
3Adaptability or versatility
If distribution elements are spaced closer together to enable row-specific application, then adaptability to crop rows improves, but the structural weight and space requirements increase
Solution Approach 1:
The patent achieves closer functional spacing by dividing existing distribution elements into multiple zones rather than physically spacing distribution elements closer together. This segmentation approach provides adaptability to different row spacings without adding the structural weight that would result from installing additional distribution elements and delivery lines across the spreader boom.
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 flexible and efficient application of granular material along or between plant rows, adapting to various row spacings and crop patterns, enhancing application precision and efficiency.
Implementation Method 1
The material is conveyed along the distribution lines, which are arranged at least partially on the distribution boom, by means of an airflow towards the distribution devices.
Implementation Method 2
The distribution devices each have at least one distribution element for spreading the spreading material, forming a fan of material.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
A pneumatic fertilizer spreader for distributing granular spreading material is disclosed. The pneumatic fertilizer spreader (1) has a distribution boom (2) for spreading granular spreading material, comprising two lateral arms (3), each of which has a plurality of distribution lines (4) and distribution devices (10) for distributing the spreading material. The spreading material is conveyed along the distribution lines (4), which are arranged at least partially on the distribution boom (2), by means of an airflow towards the distribution devices (10). The distribution devices (10) for distributing the spreading material each comprise at least one distribution element (11), preferably a deflector plate or a guide element, for forming a spreading fan (12) of granular spreading material. The pneumatic fertilizer spreader is characterized by the fact that the distribution devices (10) are each designed to generate a variable number of spreading compartments (12a, 12b).