Solid-Liquid Separator Two-Stage Dehydration
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Solution Overview
Problem
Conventional solid-liquid separators face challenges in achieving a balance between efficiently discharging processed objects and lowering their moisture content, as high rotational speeds lead to insufficient dehydration and low speeds reduce discharge efficiency.
Innovation Solution
A solid-liquid separation system incorporating a screw type dehydration unit for primary dehydration and a rotary-body type dehydration unit for secondary dehydration, allowing for two-stage dehydration with adjustable rotational speeds to effectively lower moisture content and enhance discharge efficiency, while simplifying the apparatus configuration by integrating these units and using a flocculant supply to facilitate separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rotary bodies are rotated at high speed to achieve efficient discharge, then discharge efficiency is improved, but dehydration becomes insufficient and moisture content becomes high
Solution Approach 1:
The dehydration process is segmented into two distinct stages: primary dehydration using a screw type dehydration unit at high speed for efficient discharge, and secondary dehydration using a rotary-body type dehydration unit at lower speed for moisture reduction. This segmentation allows each stage to operate at optimal speeds for its specific function, resolving the contradiction between discharge efficiency and moisture content control.
Solution Approach 2:
The screw type dehydration unit performs preliminary dehydration at high speed to remove the bulk of moisture and prepare the material for subsequent secondary dehydration. This preliminary action enables the rotary-body unit to focus on fine moisture removal without compromising overall discharge efficiency.
2Manufacturing precision
If the rotary bodies are rotated at low speed to lower moisture content, then dehydration is improved, but discharge efficiency is reduced
Solution Approach 1:
The dehydration process is divided into two stages where the first stage (screw type) operates at high speed for efficient discharge, while the second stage (rotary-body type) operates at lower speed for moisture reduction. This segmentation allows the system to achieve both high discharge efficiency and effective dehydration by assigning different functional roles to each unit.
Solution Approach 2:
The system changes the operational parameters (rotational speed) between the two dehydration stages. The screw type unit operates at higher speed for primary dehydration, while the rotary-body unit operates at lower speed for secondary dehydration. This parameter change allows optimization of both discharge efficiency and moisture content control.
3Device complexity
If a single-stage dehydration system is used, then apparatus configuration is simple, but it is difficult to achieve both efficient discharge and low moisture content
Solution Approach 1:
The dehydration function is segmented into two specialized units: a screw type dehydration unit for primary dehydration and a rotary-body type dehydration unit for secondary dehydration. This segmentation enables the system to achieve both efficient discharge and low moisture content by assigning different functional roles to each unit, overcoming the limitations of single-stage systems.
Solution Approach 2:
The patent combines two different dehydration mechanisms (screw type and rotary-body type) into a single integrated system. This merging of complementary functions allows the system to achieve both efficient discharge and effective dehydration, providing a solution that is more capable than either unit alone while maintaining reasonable apparatus configuration.
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 system effectively lowers the moisture content of processed objects and enhances discharge efficiency by performing two-stage dehydration, reducing the complexity of the apparatus configuration and eliminating the need for separate agitation and transfer facilities.
Implementation Method 1
after gravity filtration is performed in the screw type dehydration unit
Implementation Method 2
squeezing filtration denotes filtration for squeezing out liquids from the object to be processed by pressurizing (squeezing) the object to be processed
Implementation Method 3
a flocculant supply unit that supplies a flocculant to the object to be processed on which the primary dehydration has been performed
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
This solid-liquid separator (100a) includes a screw type dehydration unit (2) including a screw (22) and that performs primary dehydration on an object to be processed, and a rotary-body type dehydration unit (3) including a plurality of rotary bodies (30), disposed subsequent to the screw type dehydration unit, and that performs secondary dehydration on the object to be processed on which the primary dehydration has been performed by the screw type dehydration unit. The screw rotates at a higher rotational speed than those of the rotary bodies.