Corn MOG Separator With Mechanical Decelerator
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Solution Overview
Problem
Existing systems for separating corn cobs from corn husks in agricultural combines face issues due to the high speed of the material flow, leading to insufficient air blast separation, where lighter husks accumulate and 'hairpin' on conduit edges, causing plugging, requiring high-speed air and powerful fans.
Innovation Solution
A corn and MOG separator with a decelerating and separating chamber that uses a combination of mechanical deceleration and secondary airflow to separate cobs from husks, featuring a housing with inlets for MOG and air, a fan to draw air through the chamber, and a mechanical decelerator to slow down the MOG stream, allowing gravity and air to separate the materials, along with a conveyor to direct cobs out and a distributor to spread husks over the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-speed air blast is used to separate cobs from husks, then separation efficiency is improved, but the system requires powerful fans and high energy consumption
Solution Approach 1:
The patent applies preliminary action by introducing a mechanical decelerator that slows down the MOG stream before it enters the air blast separation zone. This pre-deceleration reduces the kinetic energy of the material flow, allowing the air blast to more effectively separate husks from cobs without requiring excessive fan power. The decelerator is positioned upstream of the separation zone to prepare the material flow in advance.
Solution Approach 2:
The patent introduces a mechanical decelerator as an intermediary device between the chopper and the air blast separation system. This intermediary component modifies the velocity of the MOG stream, creating optimal conditions for the subsequent air blast separation. The decelerator acts as a mediator that bridges the high-speed material flow from the chopper and the air blast separation process, enabling efficient separation with reduced energy input.
2Productivity
If high-speed material flow is maintained from chopper to separator, then productivity is improved, but air blast separation becomes insufficient and husks accumulate causing plugging
Solution Approach 1:
The mechanical decelerator is positioned to slow down the MOG stream before it enters the air blast separation zone. This preliminary deceleration occurs upstream, allowing the material to transition from high-speed flow to a slower velocity where air blast can effectively separate husks from cobs. The decelerator prepares the material flow in advance to prevent husk accumulation and plugging.
Solution Approach 2:
The patent changes the velocity parameter of the MOG stream by introducing a mechanical decelerator. This parameter change transforms the high-speed material flow into a slower flow regime where air blast separation becomes effective. The decelerator adjusts the speed parameter to an optimal range that enables reliable separation without causing material accumulation or conduit plugging.
3Reliability
If mechanical decelerator is introduced to slow MOG stream, then separation effectiveness is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex pneumatic or hydraulic deceleration systems with a simpler mechanical decelerator. The mechanical decelerator uses basic mechanical components to reduce the velocity of the MOG stream, avoiding the need for complex control systems, sensors, or energy-intensive mechanisms. This mechanical approach achieves the desired deceleration with minimal added complexity.
Solution Approach 2:
The mechanical decelerator is designed as a simple, inexpensive component that can be easily manufactured and installed. Rather than using expensive, complex deceleration systems, the patent employs a straightforward mechanical device that performs the deceleration function reliably without requiring maintenance or replacement of complex subsystems.
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
Effectively reduces the speed of MOG, enabling efficient separation of cobs from husks using gravity and air, preventing conduit plugging and reducing the need for high-speed air, thus improving the collection and distribution of corn cobs while dispersing husks effectively.
Implementation Method 1
a fan to draw air into an air inlet, through the corn MOG and out an air outlet with entrained husks
Implementation Method 2
allowing gravity and air to separate the materials
Implementation Method 3
a mechanical decelerator to slow down the MOG stream
Data Source
AI summary
A corn MOG separator for an agricultural combine having a chopper for chopping MOG, the corn MOG separator being located after the chopper in the MOG flow stream and having a separating chamber for receiving the MOG and separating the lighter from the heavier components, the chamber having a mechanical decelerator for mechanically decelerating the corn MOG.