Crop Sprayer Head Unit Suction Inlet Redesign
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Solution Overview
Problem
Existing crop spraying apparatuses suffer from inefficient air suction, leading to dirt and detritus accumulation, filter saturation, and neutralization of electrostatic charges, which reduces treatment efficiency and requires unsustainable maintenance.
Innovation Solution
The apparatus features a head unit with a suction inlet oriented perpendicular to the dispensing sides and inclined relative to the forward direction, using a conveyor conduit and additional suction inlets positioned above the tank to minimize the suction of charged and dirty air, ensuring efficient air flow and reduced maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the suction inlet is positioned close to the ground for efficient air intake, then air suction efficiency is improved, but dirt and detritus accumulation increases
Solution Approach 1:
The suction inlet is repositioned from a horizontal ground-level location to a vertical position above the tank, utilizing the vertical dimension to separate the suction zone from the dispensing zone. This spatial reconfiguration allows the system to maintain efficient air intake while avoiding contact with dirt and detritus on the ground surface.
2Device complexity
If the suction inlet is positioned near the dispensing side, then air flow path is shortened, but electrostatic charge neutralization occurs
Solution Approach 1:
The air flow path is segmented into distinct zones: a suction zone above the tank, a mixing zone, and a dispensing zone. By separating these zones spatially, the system maintains the electrostatic charge generated in the mixing zone while allowing efficient air intake in the suction zone, preventing charge neutralization.
Solution Approach 2:
The vertical positioning of the suction inlet above the tank acts as an intermediary spatial arrangement, creating a separate air intake path that does not interfere with the electrostatic charging process occurring in the dispensing zone, thus preventing charge neutralization while maintaining flow efficiency.
3Object-affected harmful factors
If filters are installed to remove dirt and detritus, then air purity is improved, but filter saturation and maintenance frequency increase
Solution Approach 1:
The system prevents dirt and detritus from entering the air intake system in the first place by positioning the suction inlet above the tank, away from ground-level contaminants. This preliminary prevention approach eliminates the need for frequent filter maintenance while maintaining air purity.
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 significantly reduces the risk of sucking treated air and dirt, maintaining electrostatic charge efficiency and extending maintenance intervals by separating suction and dispensing zones, thereby enhancing treatment effectiveness and operational sustainability.
Implementation Method 1
a head unit, configured to suck air from a suction inlet open to an outside environment
Implementation Method 2
Before being dispensed, the air mixed with the treating compound is charged electrostatically. This electrostatic charge is very important because it makes the treatment extremely efficient, increasing the degree of adhesion of the treating compound to the crops
Implementation Method 3
The dispenser is configured to receive treatment air, including the treatment compound in atomised form
Data Source
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AI summary
An apparatus (1) for spraying crops with a treating compound, the apparatus being configured to advance along a forward direction (L) in a forward versus (V1) and comprises: a frame (5); a tank (2), configured to contain the treatment compound; a dispenser (3), configured to receive treated air, including the treating compound in nebulized form, and to deliver the treating air in at least one transverse direction (T), perpendicular to the forward direction (L); a head unit (4), configured to draw air from an inlet port (BA) open to an external environment, connected to the reservoir (2) to receive the treating compound and configured to pump the treating air towards the nozzle (3), said inlet port (BA) being perpendicular to an inlet direction (DA) and receiving air in an inlet versus (VA), entering the inlet port (BA). The head unit (4) includes: a first (LE1) and a second delivery side (LE2), perpendicular to the transverse direction (T) and directly facing outward; a charging unit, configured to electrostatically charge the treated air. The suction inlet (BA) is spaced apart, at least in part, from the first and second dispensing sides (LE1, LE2).