Modular Screw Press Coupling for Rapid Reconfiguration
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Solution Overview
Problem
Conventional modular screw presses require complete disassembly and shutdown of the process line for reconfiguration, leading to significant downtime and inefficiencies in maintenance and adaptation for different separation processes.
Innovation Solution
A modular screw press design with interconnectable filter sections and screw sections, featuring a coupling system at the outside diameter of the screw flight for easy assembly and disassembly, allowing for continuous operation and reduced downtime during reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional modular screw presses are designed with separate sections for adaptability, then versatility is improved, but reconfiguration requires complete disassembly and shutdown resulting in significant downtime
Solution Approach 1:
The screw press is divided into modular sections including filter sections and screw sections that can be independently assembled and disassembled. Each module contains complete functional elements (filter section with liquid passages, screw section with flight), allowing selective reconfiguration without complete disassembly of the entire device.
Solution Approach 2:
Coupling members are pre-positioned at the ends of screw sections and filter sections, with coupling bores and fastening features prepared in advance. This preliminary arrangement of coupling elements enables rapid connection and disconnection of modules without requiring complex assembly procedures during reconfiguration.
2Ease of operation
If modular sections are detachably coupled for easy assembly, then ease of operation is improved, but structural integrity and consistency of the screw press may be compromised
Solution Approach 1:
The coupling member features a semi-cylindrical shape that conforms to the cylindrical exterior of the screw flight section. This curved geometry provides large surface area contact between coupling members, ensuring stable mechanical connection while maintaining the rotational symmetry required for reliable screw press operation.
Solution Approach 2:
The coupling member integrates multiple functions into a single component: it provides structural connection between screw sections, supports the continuous screw flight across module boundaries, and maintains alignment of coupling bores. This merging of functions reduces the number of separate parts while ensuring structural integrity.
3Adaptability or versatility
If the screw press is completely disassembled for reconfiguration, then adaptability is improved, but productivity is reduced due to shutdown and downtime
Solution Approach 1:
The screw press design transitions from static complete assembly to dynamic modular configuration. Modules can be added, removed, or repositioned while the system remains operational or requires minimal shutdown. The continuous screw flight design ensures that dynamic module changes do not disrupt the fundamental conveying and compression function.
Solution Approach 2:
The coupling members and continuous screw flight design enable maintenance of continuous slurry conveyance and liquid extraction during module reconfiguration. The overlapping functional zones at module boundaries ensure that the separation process continues uninterrupted or with minimal interruption, maintaining productivity while enabling adaptability.
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
Facilitates efficient maintenance and reconfiguration of the screw press, enabling adaptable operation with minimal downtime and maintaining consistent slurry pressure, resulting in improved solid-liquid separation efficiency and increased solid fraction of the dehydrated slurry.
Implementation Method 1
a rotatable screw mounted in said tubular body for conveying the solid-liquid mixture from the inlet section to the outlet section while compressing the solid-liquid mixture
Implementation Method 2
said filter section having liquid passages; and forcing at least part of a liquid content thereof to be expelled out of the tubular body through said liquid passages of said filter section
Data Source
Figure 1
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AI summary
A screw press (14) for separating liquid from a solid-liquid mixture comprises a filter casing (18) having inlet and outlet sections (24, 26), and a filter section (28) therebetween. A screw (20) is mounted in the casing (18) for conveying the solid-liquid mixture from the inlet section (24) to the outlet section (26) while compressing the solid- liquid mixture and forcing at least part of a liquid content thereof to be expelled out of the filter casing (18). The casing (18) and the screw (20) are of modular construction. The filter section (28) has at least first and second serially interconnectable filter sections (28a, 28b), and the screw (20) has at least first and second serially interconnectable screw sections (20a, 20b) respectively disposed in the first and second filter sections (28a, 28b) for joint rotation as a unitary component. The first and second screw sections (20a, 20b) have a continuous screw flight (34) having a flight outside diameter. The first and second screw sections (20a, 20b) are detachably coupled to one another by a coupling (62) provided at the outside diameter of the flight (34).