Pump Connection Assembly With Retained Union Nut for Adhesive-Free Sealing
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Solution Overview
Problem
Existing pump systems, particularly booster pump systems, face challenges in achieving watertight connections without the use of potentially harmful adhesives and require complex assembly processes with multiple components, leading to inefficiencies and potential loss of hydraulic components during transport and installation.
Innovation Solution
The pump system incorporates a design where hydraulic connection ports have a connecting pipe with a flange and union nut, forming an integral element, allowing for a secure, adhesive-free connection through welding, reducing the number of components and assembly time, and ensuring mechanical stability under high pressures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is applied to threaded pipe connections to achieve watertightness, then connection tightness is improved, but health safety deteriorates due to potentially harmful substances
Solution Approach 1:
The invention extracts and removes the adhesive substance from the connection system entirely. Instead of using threaded pipe connections requiring adhesive, the patent employs flange connections with union nuts that achieve watertight sealing through mechanical means alone, eliminating harmful substances from the connection process while maintaining connection reliability
Solution Approach 2:
The invention replaces the chemical bonding mechanism (adhesive) with a mechanical fastening system consisting of flanges and union nuts. The mechanical pressure and sealing surfaces of the flange connection provide watertight sealing without requiring any chemical substances, thus substituting chemical bonding with mechanical fastening
2Adaptability or versatility
If multiple separate components are used for hydraulic connections, then adaptability is improved, but device complexity increases
Solution Approach 1:
The invention merges multiple separate components (threaded pipe, flange, sealing elements) into an integrated flange connection assembly where the flange is directly formed as part of the pump casing. This integration reduces the number of separate components while maintaining the adaptability and versatility of the connection system through standardized flange interfaces
3Reliability
If adhesive is used for hydraulic connections, then connection tightness is improved, but assembly time increases due to curing requirements
Solution Approach 1:
The invention extracts the adhesive curing process from the assembly sequence. By using mechanical flange connections with union nuts, the system eliminates the time-consuming adhesive application and curing steps, achieving connection tightness through immediate mechanical fastening without waiting for chemical curing
Solution Approach 2:
The invention skips the adhesive curing phase entirely by using a mechanical fastening system that provides immediate connection tightness. The union nut can be tightened to achieve watertight sealing without requiring any waiting period for adhesive to cure, thus rushing through the assembly process more efficiently
4Ease of operation
If union nut is detachable from connecting pipe, then ease of operation is improved, but reliability deteriorates due to potential loss of components
Solution Approach 1:
The invention employs a nested structure where the union nut is positioned within the space between the flange and the pump casing body. This nesting arrangement prevents the union nut from being detached or lost while still allowing for easy operation and assembly, as the union nut is naturally retained in its proper position by the surrounding structural elements
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
This solution enables quick and secure connections without adhesives, reduces assembly time, and maintains mechanical stability at high pressures, while minimizing component loss and simplifying installation, thus improving the efficiency and reliability of the pump system.
Implementation Method 1
the connecting pipe is integrally connected to the pump casing by welding
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
Pump unit (10) for installation in a pump system (100), in particular a booster pump system, comprising a pump casing (11) with at least two hydraulic connection ports (20, 30), wherein at least one of the hydraulic connection ports (20, 30) comprises a connecting pipe (21, 31) which is integrally connected to the pump casing (11) and which has a flange (22, 32), wherein a union nut (23, 33) is held on the connecting pipe (21, 31) between the flange (22, 32) and the pump casing (11) so that the union nut (23, 33) is held back by the flange (22, 32).