Eccentric Screw Pump Drive-Side Joint Maintenance Access
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Solution Overview
Problem
Eccentric screw pumps face challenges in maintenance and repair due to the complexity of accessing and disassembling the drive-side joint, which is often encased within the pump housing, making it difficult to replace worn parts like the stator and rotor without dismantling the entire pump.
Innovation Solution
The drive-side housing socket is designed to be dismantled, allowing the drive-side joint to be exposed and disassembled without being surrounded by the housing socket over its entire circumference, enabling localized disassembly and facilitating the replacement of components like the shaft seal and drive shaft without removing the pump housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the drive-side housing socket is designed as a one-piece structure, then the structural strength and sealing are improved, but the accessibility and ease of repair of the drive-side joint deteriorate
Solution Approach 1:
The drive-side housing socket is divided into a first housing socket section and a second housing socket section that can be dismantled from each other. This segmentation allows the joint to be accessed for maintenance while maintaining structural integrity during operation, directly resolving the contradiction between strength and repairability.
2Ease of repair
If the drive-side housing socket is designed as a removable structure, then the ease of repair and accessibility of the drive-side joint are improved, but the structural complexity and potential leakage points increase
Solution Approach 1:
The housing socket is segmented into two sections that can be separated, providing repair accessibility while maintaining a relatively simple overall structure.
Solution Approach 2:
The housing socket transitions from a static one-piece structure to a dynamic structure where the second section can be moved between connected and separated positions, enabling repair access without permanently increasing complexity.
Data Source
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AI summary
What is concerned is an eccentric screw pump having at least one stator (1), a rotor (2) rotating in the stator, a drive (3) for the rotor, a pump housing (4) which is connected to the stator (1) and has at least one inlet opening (6) for the medium to be conveyed, a connection housing (14) arranged between the pump housing (4) and drive (3), a connection shaft (9) which is connected to the drive (3) and is arranged at least in certain regions in the connection housing (14), and a coupling rod (10) which is arranged in the pump housing (4) and is connected to the connection shaft (9) via a drive-side joint (11) and to the rotor (2) via a rotor-side joint (12). The drive-side housing connection piece (16) can be demounted in such a way that the drive-side joint (11) can be exposed for maintenance or demounting.