Centrifugal Separator Flushing Nozzle for Particle Removal
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Solution Overview
Problem
Centrifugal separators face challenges with particle build-up on rotating and fixed components, particularly in designs with conical disc elements, where particles struggle to slide off and the housing's receiving space is difficult to clean, leading to reduced efficiency and cleaning difficulties.
Innovation Solution
The implementation of a flushing liquid system that delivers washing liquid through nozzles, both internally within the rotor and externally via a rotatable nozzle, to dislodge and collect particles, ensuring efficient cleaning without disassembly, suitable for both concurrent and countercurrent separation methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conical disc elements are stacked tightly to maximize sedimentation efficiency, then particle separation efficiency is improved, but particle removal difficulty increases
Solution Approach 1:
The patent employs hydraulic flushing systems that deliver liquid through nozzles to the disc surfaces. The liquid flow creates hydrodynamic forces that mobilize deposited particles, enabling their removal through the flushing system without disassembling the tightly stacked disc configuration, thus maintaining both high sedimentation efficiency and ease of particle removal
Solution Approach 2:
The patent introduces a liquid flushing medium as an intermediary substance between the deposited particles and the removal system. This liquid mediator penetrates the tight disc spacing, wets the particle deposits, and facilitates their detachment and transport to collection points, resolving the contradiction between tight stacking and particle removability
2Manufacturing precision
If disc surfaces are oriented at right angles to G forces to maximize cleaning efficiency, then particle separation performance is improved, but particle slide-off capability deteriorates
Solution Approach 1:
The patent uses directed liquid jets from nozzles that impinge on the disc surfaces at optimal angles. The hydraulic flow generates shear forces and pressure that overcome the gravitational orientation limitation, effectively removing particles even when discs are positioned perpendicular to G forces, thus maintaining both separation performance and particle removal capability
Solution Approach 2:
The patent transforms the static particle removal problem into a dynamic process by introducing moving liquid flows. The dynamic impact and shear forces from the flushing liquid enable particle detachment from surfaces oriented at right angles to gravity, overcoming the limitation of static gravitational sliding
3Loss of time
If in-situ cleaning is implemented to avoid disassembly, then maintenance time is reduced, but cleaning complexity increases
Solution Approach 1:
The patent integrates multiple functions into the flushing system: nozzles serve both cleaning and particle transport functions, the liquid flow simultaneously wets, detaches, and transports particles, and the system handles both sediment removal and surface cleaning. This multi-functionality reduces overall system complexity despite the in-situ cleaning approach
Solution Approach 2:
The patent designs the flushing system to be self-regulating where the liquid flow automatically adjusts to distribute particles to collection points, and the system uses its own operating fluid for both separation and cleaning functions, reducing the need for external complex cleaning mechanisms
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 in-situ cleaning of centrifugal separators, effectively removing particle deposits from both rotating and stationary components, enhancing cleaning efficiency and reducing residue accumulation.
Implementation Method 1
The device operates by delivering, in a quantity which in terms of magnitude is substantially greater than the flow of liquid/particles separated out during operation, a stream of flushing liquid to the stream of gas to be cleaned or to the rotor during the period when the gas stream is interrupted or at least substantially reduced
Implementation Method 2
centrifugal separators for concurrent and countercurrent separation of solid and/or liquid particles suspended in gaseous media
Implementation Method 3
an outlet for the solid and/or liquid particles which have deposited on the sedimentation members and are then transferred to a side wall of the housing by a centrifugal force
Data Source
AI summary
The invention relates to devices and methods for cleaning centrifugal separators for concurrent and countercurrent separation of solid and/or liquid particles suspended in gaseous media. The device comprises a rotor (12) which is provided with a multiplicity of sedimentation members (14) and which is mounted rotatably in a surrounding housing (20). In concurrent separation, a flushing nozzle (36) is arranged upstream of the sedimentation members (14) in order to supply a cleaning liquid for flushing the sedimentation members clean. In countercurrent separation, the flushing nozzle is arranged upstream and/or downstream of the sedimentation members in order to supply cleaning liquid from outside and/or from inside the rotor for flushing the sedimentation members clean.