Granular Material Distributor With Dynamic Bypass Airflow Isolation
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Solution Overview
Problem
Existing agricultural spreading machines face issues with unintentional air return from discharge sections into the main conveying line, disrupting material conveyance when rows are shut down, due to a persistent pneumatic connection between return and discharge areas of the return devices.
Innovation Solution
A distribution device with a deflection element that blocks the bypass line connecting the return and discharge areas in the discharge position, using a rocker mechanism to prevent pneumatic connections and redirect excess air through a bypass line, ensuring uninterrupted material transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a bypass line connects the return area and discharge area of the return device, then excess air can be removed from the system, but unintentional air return from discharge section to main conveying line occurs
Solution Approach 1:
The deflection element acts as an intermediary component that controls the bypass line connection. When in the shut-off position, it mediates between the return area and discharge area by opening the bypass line to remove excess air. When in the discharge position, it blocks the bypass line to prevent unintentional air return, thus resolving the contradiction between air removal and conveyance stability.
Solution Approach 2:
The bypass line connection is made dynamic through the movable deflection element. The connection state changes from open to closed based on the operational requirements - open when air removal is needed, closed when material conveyance stability is prioritized. This dynamic control resolves the contradiction by adapting the system state to different operational phases.
2Productivity
If the deflection element directs air-material flow to discharge area, then material can be discharged, but pneumatic connection allows air return to main conveying line
Solution Approach 1:
The harmful pneumatic connection pathway is extracted or removed from the system when the deflection element is in the discharge position. By blocking the bypass line, the unwanted connection between discharge area and return area is taken out, eliminating the source of unintentional air return while maintaining material discharge functionality.
Solution Approach 2:
The deflection element design converts the potential harm of pneumatic connection into a beneficial controlled system. The same bypass line that could cause air return is used to remove excess air when needed, and the deflection element transforms this potential harm into a controllable feature that serves both air removal and discharge functions at different times.
3Stability of the object's composition
If multiple rows are shut down simultaneously, then material return is maintained, but conveying flow in main conveying line is disrupted
Solution Approach 1:
The excess air component is extracted from the recirculated air-material flow through the bypass line. When multiple rows are shut down, the deflection element opens the bypass line to remove excess air while maintaining the material return path, thus preserving conveying flow velocity in the main conveying line while maintaining material return stability.
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
Prevents pressure-related disruptions in the main conveyor line and discharge line by eliminating permanent pneumatic connections, maintaining efficient material conveyance and application in agricultural spreading machines.
Implementation Method 1
the deflection element of the distribution device according to the invention is designed to block a bypass line of the return device connecting the return area of the return device and the discharge area of the return device in the discharge position
Implementation Method 2
In the shut-off position of the deflection element, an individual air-material flow flowing into the inflow area of the return device is directed via a return line of the return device to a return area of the return device connected to the main conveying line
Implementation Method 3
air from a redirected air/material flow can be fed via a bypass line into a line section leading to a discharge element. In this way, material circulation is maintained while excess air is removed and discharged from the system via the discharge elements
Data Source
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AI summary
The invention relates to a distributor (10) for granular material, having a distributor head (14), which is designed to divide up an air-material main flow supplied through a main conveying line (12) to the distributor head (14) into a plurality of air-material individual flows, and at least one return device (16), which comprises a movable deflecting element (36), which is designed, in a delivery position, to supply an air-material individual flow flowing into an inflow region (26) of the return device (16) to a delivery region (28), connected to a delivery line (18), of the return device (16) and, in a shut-off position, to direct an air-material individual flow flowing into the inflow region (26) of the return device (16) via a return line (30) of the return device (16) to a return region (32), connected to the main conveying line (12), of the return device (16).