Separator Gap Control Using a Hydraulic Restrictor Ring
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Solution Overview
Problem
Existing separation machines require manual or hydraulically actuated mechanisms for adjusting the restrictive annular gap, which are inefficient and prone to human error or contamination, especially in food processing applications.
Innovation Solution
A hydraulic system with a proportional valve and position sensor controls the restrictor ring valve, providing precise and automated adjustment of the gap between the auger and screen, using a mechanical advantage mechanism to enhance control and reduce manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual manipulation of restrictor ring valve is used, then device complexity is reduced, but manufacturing precision and reliability deteriorate due to human error and contamination risks
Solution Approach 1:
The patent replaces manual mechanical manipulation with an automated hydraulic actuation system. A hydraulic cylinder with a piston is connected to the restrictor ring valve, enabling automated adjustment of the gap between the screen and auger. This substitution eliminates human error and contamination risks while maintaining precise control over the gap size, directly resolving the contradiction between device complexity and manufacturing precision.
2Manufacturing precision
If hydraulic actuation is used, then manufacturing precision improves, but device complexity and contamination risks increase
Solution Approach 1:
The patent extracts the hydraulic actuation system from the food processing environment by positioning the hydraulic cylinder and piston in a separate, protected location. Only the essential mechanical connection to the restrictor ring valve remains in the processing area. This extraction minimizes contamination risks while preserving the precision benefits of hydraulic actuation, effectively resolving the contradiction between manufacturing precision and contamination risk.
3Productivity
If automated hydraulic control is implemented, then productivity improves, but device complexity increases
Solution Approach 1:
The patent implements a self-regulating hydraulic system where the piston automatically adjusts the restrictor ring valve position based on feedback from the separation process. The system uses the natural hydraulic pressure differential created during operation to control the piston movement, eliminating the need for complex external control mechanisms. This self-service approach maintains high productivity while minimizing device complexity, directly addressing the contradiction between productivity and device complexity.
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 precise and repeatable adjustment of the gap for efficient separation of harder and softer materials, minimizing mechanical wear and contamination risks while optimizing separation yield.
Implementation Method 1
A hydraulic system with a proportional valve and position sensor controls the restrictor ring valve
Implementation Method 2
using a mechanical advantage mechanism to enhance control and reduce manual intervention
Data Source
AI summary
A hydraulically powered separator includes a separation chamber, an auger, a restrictor ring mounted at an output end of the chamber, a hydraulic cylinder having a reciprocating ram, a proportional hydraulic valve operatively coupled to the hydraulic cylinder, and a controller operatively coupled to the proportional hydraulic valve so as to control the hydraulic cylinder in a closed-loop manner. The chamber receives and processes a food product and has a cylindrical screen including a plurality of apertures. The auger is rotatably disposed within the chamber and an annular space and a volume is defined between the auger and the screen. The restrictor ring can be linearly and reciprocally displaced. Linear displacement of the restrictor ring varies a size of the volume. Movement of the ram causes pivoting movement of the restrictor ring to reduce or increase the size of the volume.