Self-dumping Separator Fins with Drum Clearance
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Solution Overview
Problem
Current self-dumping separators face challenges in achieving effective cleaning of the drum cover and bottom of the centrifuge space due to inadequate clearance between fins and the inner wall, leading to residual contaminants post-automatic cleaning.
Innovation Solution
Incorporating a design with an annular gap of at least 0.5 mm to 5 mm between the fins and the drum, ensuring that the fins cover 5% to 95% of the cross-sectional area, and positioning them with a center of gravity above or below the dumping plane, along with equalizing openings to alleviate Coriolis pressure, and using 3D curved vanes or planar fins distributed uniformly around the outer circumference, all integrated with connecting elements for assembly and fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If fins are arranged directly against the drum shell to maximize structural support, then the structural stability is improved, but the cleaning effectiveness deteriorates due to inadequate clearance preventing liquid relative motion
Solution Approach 1:
The patent applies parameter changes by specifying a clearance of at least 3 mm between the fins and the drum shell, transforming the fin arrangement from direct contact to spaced configuration. This parameter change enables liquid relative motion in the circumferential direction, improving cleaning effectiveness while maintaining structural stability through the fin insert design.
2Strength
If fins extend to the drum cover and bottom to maximize surface area, then the structural support is improved, but the cleaning action deteriorates due to restricted liquid motion in marginal regions
Solution Approach 1:
The patent applies local quality by ensuring adequate clearance (at least 3 mm) specifically at critical cleaning regions such as the drum cover and bottom, while maintaining fin structural support in other areas. This localized approach allows liquid relative motion in marginal regions where cleaning is most needed, without compromising overall structural support.
3Volume of moving object
If the annular gap between fins and disc stack is minimized to reduce space, then the device compactness is improved, but the cleaning of the annular region deteriorates
Solution Approach 1:
The patent applies parameter changes by specifying an annular gap of at least 0.5 mm between the fins and disc stack, transforming the configuration from tight clearance to spaced arrangement. This parameter change enables adequate cleaning of the annular region through liquid relative motion while maintaining reasonable device compactness.
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 ensures adequate cleaning by allowing significant relative motion of liquids, effectively removing contaminants from critical areas, enhancing the cleaning action and facilitating assembly and disassembly.
Implementation Method 1
A self-dumping separator with a disc stack (3) inserted into a drum (1) having solids discharge openings (10). The self-dumping separator has a vertical axis of rotation (D). A centrifuge feed is introduced via an inlet pipe (6) and a distributor (7) into a centrifuge space (2) that is enclosed by the drum (1).
Implementation Method 2
the clearance between the fins—or the advantageously implemented fin insert—and the inner wall of the drum at every point is at least three millimeters. In this way the clearance between the fins and the inner shell of the drum is made so large that at every point in the solids space the clearances between the fins and the inner shell of the drum, in particular the drum cover and the bottom of the centrifuge space as well, are large enough that adequately great relative motion of the liquid relative to the drum in the circumferential direction is always permitted
Data Source
AI summary
A self-dumping separator having a vertical axis of rotation and having a drum (1) into which a disc stack (3) made up of a plurality of conical discs (4) is inserted, a centrifuge feed being introducible via an inlet pipe (6) and a distributor (7) into the centrifuge space (2), which is enclosed by the drum (1), at least two or more fins (17) being arranged in an annular solids space (15) that is arranged radially outside the disc stack (3), the clearance between the fins (17) and the inner wall of the drum (1) being at least three millimeters.