Modular Non-Return Valve Assembly for Easy Pump Servicing
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Solution Overview
Problem
Existing non-return valves for water supply systems and pumps are difficult to install and remove, requiring significant effort and posing risks due to uncontrolled pressure loss, and often necessitate a separate filling opening upstream to prevent backflow.
Innovation Solution
A non-return valve design where the sealing body is movably mounted within a channel and integrated with a holder and closure body, allowing for easy exchange by removing the closure body, which can be fastened via bayonet or thread connections, eliminating the need for a separate filling opening and enhancing accessibility and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the non-return valve is integrated into the channel as in the state of the art, then the valve structure is compact, but the installation and removal require comparatively much effort and pose pressure loss risks
Solution Approach 1:
The non-return valve is segmented into a modular assembly comprising a holder with closure body and a separate sealing body. The holder with closure body can be installed first, and the sealing body can be easily attached or detached later, simplifying maintenance and installation while maintaining compact integration within the channel.
2Reliability
If the non-return valve is designed with a separate filling opening upstream, then backflow prevention is ensured, but the device complexity and number of components increases
Solution Approach 1:
The sealing body is designed to seal against the closure body itself, merging the backflow prevention function with the closure mechanism. This eliminates the need for a separate filling opening upstream, as the closure body with sealing body provides both the closure function and the backflow prevention in a single integrated component.
3Reliability
If the closure body is fastened securely in the housing opening, then the valve sealing is reliable, but the removal and exchange of sealing body becomes more difficult
Solution Approach 1:
The valve is divided into a stationary holder with closure body and a movable sealing body. The holder with closure body remains securely fastened in the housing opening to ensure sealing reliability, while the sealing body can be independently removed and exchanged by accessing it through the closure mechanism, facilitating easy maintenance without compromising the secure mounting.
Data Source
AI summary
A non-return valve (19) for a water supply system (1) or a pump (4) is integrated in a flow channel (14) of the water supply system (1). The non-return valve (19) includes a sealing body (21) which is mounted within the channel (14), blocks the channel (14) in a first position forming the closure position and releases the channel (14) in a second position forming the opened position. The sealing body (21) is movably arranged on a holder (31) which includes a closure body (15), with which the holder (31) is releasably fastened in a housing opening.