Modular Screw Spindle Pump Housing for Flexible Port Orientation
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Solution Overview
Problem
The complexity in producing screw pumps arises from the need for custom-made connection housings with various arrangement options, leading to intricate and costly manufacturing processes due to the requirement of one-piece housings tailored to specific applications.
Innovation Solution
A screw pump design featuring a two-piece connection housing with axially arranged housing parts that can be rotated relative to each other and the pump housing, allowing for flexible positioning of suction and pressure connections without the need for custom manufacturing, using standardized components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a one-piece connection housing is used with custom-made designs for different connection geometries, then the suction and pressure connections can be arranged in various positions to adapt to different inlet and outlet line configurations, but the production complexity increases significantly as each connection housing must be manufactured individually
Solution Approach 1:
The connection housing is divided into a first housing part and a second housing part that can be produced as standardized components. These segmented parts are then assembled in different rotational configurations to achieve various connection geometries, eliminating the need for custom one-piece housings for each application.
Solution Approach 2:
The standardized first and second housing parts serve multiple functions by being assembled in different rotational positions relative to the pump housing. The same components can create different connection geometries (0°, 90°, 180° arrangements) depending on how they are rotated and assembled, making the system universally adaptable without requiring custom parts.
2Adaptability or versatility
If custom-made one-piece connection housings are manufactured for each specific application, then the exact connection geometry requirements are met, but the manufacturing costs increase due to the need for individual production
Solution Approach 1:
By segmenting the connection housing into standardized first and second housing parts, the system allows mass production of common components. The customization is achieved through assembly configuration rather than custom manufacturing, significantly reducing production costs while maintaining application-specific adaptability.
Solution Approach 2:
The connection geometry is adjusted by changing the rotational position parameter of the housing parts relative to each other and to the pump housing. This parameter-based customization (rotational angles of 0°, 90°, 180°) allows different connection configurations using the same physical components, eliminating the need for expensive custom manufacturing.
3Ease of manufacture
If standardized housing parts are used that can be rotated and assembled in different configurations, then the production complexity is reduced and manufacturing becomes simpler, but the mechanism for achieving various connection geometries becomes more complex
Solution Approach 1:
The connection housing assembly mechanism incorporates rotational degrees of freedom, allowing the first and second housing parts to be dynamically positioned at different angles relative to each other and to the pump housing. This dynamic adjustability through rotation provides a simple yet effective mechanism for achieving various connection geometries without complex assembly procedures.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Screw spindle pump comprising a pump housing (2) with a working spindle (3) received therein and at least one driving spindle (16) meshing with it, and a connection housing (5) mounted on the pump housing (2) with a suction port (27, 32) and a pressure port (43) which communicate fluidically with a suction inlet (17) and a pressure outlet (19) of the pump housing (2), wherein the connection housing (5) consists of a first and a second housing part (24, 39), one of which has the suction port (27, 32) and the other the pressure port (43), and both of which are rotatable relative to the pump housing (2) and both of which are rotatable relative to each other.