Rotary Disc Filter with Frustum Walls
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Solution Overview
Problem
Existing rotary disc filter devices have a voluminous design, complex construction, and high manufacturing costs due to heavy and expensive rotor components, requiring a stable supporting structure.
Innovation Solution
The rotary disc filter device features disc-shaped filter members with frustum-shaped walls, allowing direct connection and simplifying the rotor's construction, reducing weight and manufacturing costs, and eliminating the need for a separate drum, with a compact design achieved by forming the rotor from a limited number of identical frame elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If disc-shaped filter members are mounted on a drum in axially spaced apart relationship, then the rotor can be supported stably, but the device becomes voluminous and complex
Solution Approach 1:
The patent merges the drum structure with the disc-shaped filter members by having the frustum walls of adjacent discs connect directly to each other, eliminating the separate drum component. This integration reduces device complexity while maintaining structural stability through the interconnected frustum geometry.
Solution Approach 2:
The disc-shaped filter members are arranged concentrically around the central axis, with each disc nested within the spatial envelope defined by the others. The frustum-shaped walls interconnect in a nested configuration that provides stability without requiring a separate supporting drum structure.
2Reliability
If a drum structure is used to support multiple disc-shaped filter members, then the rotor is stable, but manufacturing costs increase
Solution Approach 1:
The drum and disc-shaped filter members are merged into a single integrated structure where the frustum walls of adjacent discs form the supporting framework. This eliminates the need to manufacture a separate drum component, reducing manufacturing costs and complexity.
Solution Approach 2:
The rotor is segmented into multiple identical or similar frustum-shaped disc members that can be manufactured independently and then assembled. This segmentation allows for standardized, cost-effective production of individual units that combine to form the complete stable structure.
3Ease of manufacture
If adjacent disc-shaped filter members are mounted with axial spacing, then assembly is simplified, but the device volume increases
Solution Approach 1:
The frustum-shaped walls of adjacent disc members are designed to connect directly at their outer circumferences, eliminating axial spacing gaps. This merging of adjacent components reduces the overall device volume while the modular frustum design maintains assembly simplicity.
4Reliability
If a separate drum is provided to mount filter members, then the rotor structure is stable, but the device becomes voluminous
Solution Approach 1:
The drum structure is merged with the disc-shaped filter members themselves, where the frustum walls form both the filtering surfaces and the structural support. This integration eliminates the separate drum volume while maintaining rotor stability through the interconnected geometry.
Solution Approach 2:
The separate drum component is extracted from the design, with its supporting function transferred to the frustum-shaped walls of the disc members themselves. This removal of redundant components reduces device volume while the frustum geometry provides the necessary structural stability.
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
The solution results in a more compact, lightweight, and cost-effective rotary disc filter device with reduced manufacturing expenses and a simpler construction process, enabling a more affordable and efficient filtration system.
Implementation Method 1
The liquid A continues to flow out through the filter cloth 13 so that the particles which are to be filtered off adhere at the inside of the filter cloth 13
Implementation Method 2
The spray nozzles 14 spray liquid onto the filter cloth 13 axially from outside, in a direction opposite the filtering direction
Data Source
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AI summary
A rotary disc filter device includes a rotor rotatable about an axis of rotation, having a plurality of disc-shaped filter members. Each disc-shaped filter member has two walls extending outwardly form the axis of rotation. At least one of the walls has the form of a frustum.