Filtration System Free-Roller Reciprocating Mechanism
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Solution Overview
Problem
Existing filtration systems face challenges in reducing energy consumption for membrane cleaning, preventing part damage, and minimizing noise, particularly due to issues with roller contact and load distribution in reciprocating motion-based methods.
Innovation Solution
A submerged-type filtration system with a free-roller mechanism that allows for uniform load distribution and adjustable rail positioning, preventing damage and noise by enabling the filtration apparatuses to reciprocate with a movable free-roller between two rails, reducing energy consumption and maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a reciprocating frame with fixed rollers is used for membrane cleaning, then energy consumption is reduced compared to aeration methods, but load bias occurs on some rollers causing accelerated wear and breakage
Solution Approach 1:
The patent converts the fixed roller system into a dynamic one where rollers can freely move along the guide rail. This allows the rollers to automatically adjust their positions to distribute the reciprocating load uniformly across all rollers, preventing load bias and accelerated wear while maintaining the energy-efficient reciprocating motion for membrane cleaning
2Device complexity
If fixed rollers are used in the reciprocating frame, then the structure is simple, but contact and non-contact of rollers with the guide rail repeatedly occur causing noise and damage
Solution Approach 1:
The patent introduces dynamic freedom to the roller system, allowing rollers to move along the guide rail rather than being fixed. This dynamic adjustment ensures continuous contact between rollers and guide rail during reciprocating motion, eliminating impact noise and damage while maintaining structural simplicity through the use of free-roller mechanisms
3Ease of manufacture
If all rollers cannot simultaneously contact the guide rail due to flatness difference, then manufacturing is easier, but load distribution becomes uneven causing wear and breakage
Solution Approach 1:
The patent employs a dynamic roller configuration where rollers can freely move along the guide rail to automatically compensate for flatness differences in the reciprocating frame. This eliminates the need for precise manufacturing tolerances while ensuring uniform load distribution across all rollers, as the rollers naturally position themselves to share the reciprocating load equally
Data Source
AI summary
Disclosed is a filtration system capable of (i) reciprocating a filtration apparatus in feed water to be treated such that membrane fouling can be inhibited during water treatment at a relatively small amount of energy, and (ii) preventing damage to parts, thereby dramatically reducing operation and maintenance costs. The filtration system includes a filtration tank into which feed water to be treated is introduced, at least one filtration apparatus configured to perform filtration while at least a part thereof is submerged in the feed water, a driving unit for reciprocating motion of the filtration apparatus, a first rail configured to reciprocate together with the filtration apparatus, a second rail configured to guide the reciprocating motion of the filtration apparatus, and a free-roller located between the first and second rails, the free-roller being movable relative to both the first and second rails.