Solid-Liquid Separation Using Phase-Differentiated Movable Members
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Solution Overview
Problem
Conventional solid-liquid separation devices suffer from inefficient dewatering due to insufficient squeezing action by movable members that operate in the same phase and mode, leading to decreased efficiency in liquid removal treatment.
Innovation Solution
A solid-liquid separation device with movable members that operate in different phases and modes, utilizing a screw that does not contact the movable members, featuring first and second movable units with connected driving and driven members, and cams to achieve linear reciprocating motion, along with fixed members to enhance squeezing action.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If movable members operate in the same phase and mode, then the structure is simple and wear is reduced, but the squeezing action is insufficient and dewatering efficiency decreases
Solution Approach 1:
The movable members are designed to operate in different phases (first phase and second phase) rather than同步 operation. This dynamic phase difference creates varied squeezing actions throughout the rotation cycle, enhancing dewatering efficiency while maintaining structural simplicity through the use of cams and connecting rods.
Solution Approach 2:
The movable members perform periodic reciprocating motion driven by cams with different phases. The first movable members and second movable members operate in alternating phases, creating periodic squeezing and releasing actions that improve liquid removal from the treated material.
2Productivity
If movable members contact the screw, then squeezing action is enhanced, but wear on movable members increases rapidly
Solution Approach 1:
The screw is designed as a non-contact element that extends through the movable members without touching them. The squeezing action is transmitted through the movable members themselves rather than through contact with the screw, eliminating wear on the movable members while maintaining effective dewatering.
Solution Approach 2:
The traditional contact-based mechanical squeezing system is replaced with a non-contact system where the screw rotates without touching the movable members. The squeezing action is achieved through the phase-differentiated reciprocating motion of the movable members themselves, substituting contact friction with phase-based mechanical action.
3Reliability
If movable members operate without contact with screw, then wear is reduced, but squeezing action becomes insufficient
Solution Approach 1:
The movable members are designed with different phases of operation, where first movable members and second movable members reciprocate at different times during the screw rotation cycle. This dynamic phase difference creates effective squeezing action without contact with the screw, eliminating wear while maintaining dewatering efficiency.
Solution Approach 2:
The movable members are divided into first movable members and second movable members with different operational phases. This segmentation allows each group to perform squeezing actions at different times, creating cumulative effect that maintains high dewatering efficiency without requiring contact with the screw.
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 device effectively applies pressure to the treated object without contact, enhancing dewatering efficiency and simplifying the configuration by reducing wear on movable members and preventing clogging.
Implementation Method 1
a screw that extends through the movable members in a state where the screw is not contact with the movable members and which subjects an object to be treated containing liquid to liquid removal treatment while conveying by the rotation the screw
Implementation Method 2
a cam to pressurize the driving member to perform linear reciprocating motion, wherein two cams adjacent to each other in an axial direction of the screw are disposed in different phases from each other
Data Source
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AI summary
(Problem) In a solid-liquid separation apparatus, which comprises multiple movable members and screws that extend and pass through the movable members without contacting the movable members and which dehydrates sludge while conveying same by means of the rotation of the screws, to apply a wringing action on the sludge and increase sludge dehydration efficiency. (Solution) A first movable unit 41 is configured by linking multiple movable members 4A and 4B as a unit with a linking rod 44, a second movable unit 41A is configured by linking multiple other movable members 4C and 4D as a unit with a linking rod 44A, and the movable members 4A and 4B of the first movable unit 41 and the movable members 4C and 4D of the second movable unit 41A are reciprocated with a phase difference.