Solid-Liquid Separator Movable Member Dynamics
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Solution Overview
Problem
The efficiency of liquid removal in contactless solid-liquid separators is low due to insufficient squeezing action by movable members, which are often worn out by interference with the screw, leading to decreased treatment effectiveness.
Innovation Solution
The movable members are designed to move closer to the center axis line of the screw than the outer circumferential edge, applying a shear force to the object being treated without contacting the screw, thereby enhancing the efficiency of liquid removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If movable members are positioned outside the outer circumferential edge of the screw blade to prevent contact, then the movable members are prevented from being rapidly worn out, but the squeezing action applied to the object to be treated becomes insufficient
Solution Approach 1:
The movable members are configured to perform a circular movement relative to the screw, dynamically adjusting their position to penetrate closer to the center axis line during operation. This dynamic positioning enables the movable members to apply sufficient squeezing action to the object being treated while maintaining non-contact with the screw, thus resolving the contradiction between durability and liquid removal efficiency
2Object-generated harmful factors
If movable members perform circular movement to prevent solids from clogging filtrate discharge gaps, then clogging is prevented, but the movable members may come into contact with the screw causing rapid wear
Solution Approach 1:
The design specifies that movable members perform circular movement only within a controlled range that allows them to prevent solids clogging in the filtrate discharge gaps, while simultaneously constraining their movement to remain outside the outer circumferential edge of the screw blade. This localized quality control of movement range prevents both clogging and screw contact, resolving the contradiction between clogging prevention and service life
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 increases the efficiency of liquid removal from the treated object while preventing movable member wear and ensuring effective liquid removal treatment.
Implementation Method 1
a screw extending through the fixed members and the movable members in a state where the screw is not in contact with the fixed members and the movable members, with this screw being rotationally driven about a center axis line thereof while an object to be treated that has penetrated into a solid-liquid separation portion demarcated by the fixed members and the movable members bring caused to move toward an outlet of the solid-liquid separation portion by rotation of the screw
Implementation Method 2
The movable members are designed to move closer to the center axis line of the screw than the outer circumferential edge, applying a shear force to the object being treated without contacting the screw, thereby enhancing the efficiency of liquid removal
Implementation Method 3
a filtrate separated from the object to be treated being discharged to the outside of the solid-liquid separation portion through filtrate discharge gaps between the fixed members and the movable members
Data Source
AI summary
A solid-liquid separation device includes a plurality of fixed members and movable members that are movably disposed between the adjacent fixed members, and a screw extending through the fixed members and the movable members in a state where the screw is not in contact with the fixed members and the movable members. The screw is rotationally driven about a center axis line thereof. A filtrate separated from an object is discharged to the outside of the solid-liquid separation portion through filtrate discharge gaps, and the object that has a reduced liquid content ratio is discharged from the outlet to the outside. In order to increase significantly a dewatering ratio, the movable members are formed to move while penetrating closer to the center axis line of the screw than an outer circumferential edge of the blade of the screw, without coming into contact with the screw.