Hay Baler Liquid Coating System for Clogging Prevention
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Solution Overview
Problem
Hay balers experience clogging issues when processing frost or drought-affected cut grass due to high sugar levels, which conventional Teflon coatings fail to adequately address.
Innovation Solution
A hay baler system that includes a reservoir for a non-toxic liquid surfactant or lubricant, such as food-grade oil, and a pumping mechanism to coat inwardly facing surfaces within the bale forming zone, using spray nozzles to apply the lubricant to prevent material buildup and clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Teflon coating is applied to hay contacting surfaces, then clogging is reduced, but the coating is not sufficiently hard wearing for the environment of use
Solution Approach 1:
The patent applies a liquid coating composition that forms a sacrificial layer on hay-contacting surfaces. This coating is designed to be relatively soft and easily replaceable, contrasting with the durable but ineffective Teflon coating. The soft coating material yields to high sugar content hay material, preventing clogging, and can be reapplied when worn, serving as a disposable protective layer that maintains effectiveness throughout its service life.
Solution Approach 2:
The patent changes the physical and chemical parameters of the coating material from hard and non-stick (Teflon) to soft and sacrificial (liquid coating composition). The coating composition contains solvents, resins, and additives that create a pliable film on surfaces. This parameter change allows the coating to deform and yield under the stress of high sugar hay material, preventing the material from building up and causing clogs, while the coating itself can be easily reapplied.
2Quantity of substance
If the compression plunger compresses cut vegetation into a bale, then bale density increases, but material builds up in the bale chamber corners causing clogging
Solution Approach 1:
The patent applies a liquid coating composition to the inner surfaces of the bale chamber, compression plunger, and other hay-contacting surfaces before the hay material enters. This preliminary coating creates a sacrificial layer that yields during compression, preventing the high sugar content material from adhering to surfaces and building up in corners. The coating is applied in advance to all surfaces that will contact the hay during the baling process.
Solution Approach 2:
The liquid coating composition acts as an intermediary layer between the metal surfaces and the high sugar content hay material. This intermediate layer is designed to be softer than the hay material, allowing it to deform and yield during compression rather than the hard metal surfaces causing the soft hay to build up and clog. The coating mediates the interaction between the mechanical compression system and the problematic hay material.
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
The lubricant effectively reduces clogging by ensuring smooth material flow and increased bale density, maintaining the hay baler's efficiency even with challenging materials.
Implementation Method 1
pump means capable of pumping said non-toxic liquid surfactant or lubricant from said reservoir at a supply pressure to one or more discharge outlets in said hay baler
Implementation Method 2
a supply of non-toxic liquid surfactant or lubricant... whereby inwardly facing surfaces in said fore and aft hay bale forming zone are at least partially coated with said non-toxic liquid surfactant or lubricant
Data Source
AI summary
A square or rectangular hay baler (10) comprises a fore and aft hay bale forming zone, and a cut vegetation pick up and delivery arrangement for delivering cut vegetation to the hay bale forming zone. A compression plunger (19) of the hay baler (10) is movable in the fore and aft direction for compressing cut vegetation into a bale in the hay bale forming zone. A reservoir (23) retains a supply of non-toxic liquid surfactant or lubricant, and a pump (25) is provided for pumping the nontoxic liquid surfactant or lubricant from the reservoir (23) at a supply pressure to one or more discharge outlets (32) in the hay baler (10). Thereby, inwardly facing surfaces in the fore and aft hay bale forming zone are at least partially coated with the non-toxic liquid surfactant or lubricant.