Centrifugal Separator With Dual-Level Solids Discharge Control
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Solution Overview
Problem
Existing self-emptying separators face high design complexity and lack of adjustability in the duration and cross-section of solid discharge openings, limiting the variability and control of solid volume emptied per unit of time.
Innovation Solution
A centrifugal separator with a rotatable drum featuring two sets of solid discharge openings at different axial heights, controlled by a single piston valve, allowing variable adjustment of the cross-section and timing of discharge openings through an electrically switchable closing chamber valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single piston valve controls a single set of discharge openings, then the device complexity is reduced, but the adjustability of solid discharge volume per unit of time is limited
Solution Approach 1:
The centrifugal drum is divided into two sets of discharge openings (first set at upper axial height, second set at lower axial height) that can be independently controlled. The piston valve can selectively open or close each set, enabling variable discharge volume adjustment while maintaining a simple single-valve structure.
Solution Approach 2:
The invention adds the axial height dimension by positioning discharge openings at two different vertical levels. This allows the piston valve to control discharge volume by selectively opening upper or lower openings, creating adjustability without increasing horizontal complexity.
2Adaptability or versatility
If multiple piston valves are used to control different discharge openings, then the adjustability of discharge cross-section is improved, but the device complexity increases
Solution Approach 1:
A single piston valve is designed to perform multiple functions: it can completely close all discharge openings, completely open all openings, or selectively open only the upper or lower sets. This multi-functionality achieves variable discharge control without requiring multiple separate valves.
Solution Approach 2:
The invention combines two sets of discharge openings into a single controlled system managed by one piston valve. The valve integrates control over both upper and lower openings, merging what would traditionally require separate control mechanisms into a unified system.
3Productivity
If the emptying process is coupled with the separation process, then the overall process coordination is improved, but the control precision of solid discharge volume is reduced
Solution Approach 1:
The discharge control is segmented into independent upper and lower opening sets that can be operated separately. This allows precise control of discharge volume by selecting which set to open, independent of the continuous separation process, enabling decoupled control with high precision.
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 structurally simple and precise control over the solid discharge volume per unit of time, decoupling the emptying process from separation processes, and allowing for adjustable and variable solid discharge rates.
Implementation Method 1
the fluid pressure generated by the rotation of the closing fluid and acting on the piston valve is greater than the fluid pressure of the product to be clarified in the separation chamber above the piston valve
Implementation Method 2
a separator (1) for the centrifugal separation of a free-flowing product P into at least one liquid phase L and at least one solid phase S
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
The invention relates to a separator, in particular a self-emptying separator, for centrifugal separation of a flowable product (P) into at least one liquid phase (L) and at least one solid phase (S), said separator having a rotatable centrifuge drum (1) with a vertical rotation axis (D), said drum having a separation chamber (6) in which a disc stack (7) is preferably provided, and having solids discharge openings (11) and an emptying mechanism with a single piston valve (10), which is designed to open and to close the solids discharge openings (11) discontinuously, a control assembly (12) being provided for the emptying mechanism, characterised in that the centrifuge drum (1) has, on its circumference, a first set of solids discharge openings (11a) and a second set of solids discharge openings (11b), the first set of solids discharge openings (11a) and the second set of solids discharge openings (11b) being arranged at two different axial heights on the circumference of the centrifuge drum (1) and thus being vertically distanced from one another, the two sets of solids discharge openings being openable and closable by the single piston valve (10).