Check Valve Ball Retainer Assembly Without Undercut Machining
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing valve arrangements for feed pumps require complex manufacturing and assembly processes due to precise dimensional accuracy requirements for the closing body holder and fluid channel, making them difficult to manufacture and assemble efficiently.
Innovation Solution
A valve arrangement featuring a closing body holder that forms a surmountable frictional or positive connection with the fluid channel, allowing for easy assembly and manufacturing without the need for undercuts, utilizing a closing body that rests on a valve seat to block fluid flow in one direction while allowing it in the other, without the use of a valve spring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closing body holder with precise dimensional accuracy is used to prevent backflow, then the reliability of the valve arrangement is improved, but the manufacturing complexity and difficulty of assembly increase
Solution Approach 1:
The invention extracts the complex dimensional accuracy requirements from the closing body holder design by introducing a separate positioning element. This positioning element carries the precise positioning function, allowing the closing body holder to be manufactured with standard tolerances using simple frictional connection, thereby resolving the contradiction between reliability and manufacturing complexity
Solution Approach 2:
The positioning element acts as an intermediary between the closing body holder and the fluid channel. It mediates the positioning function, enabling the closing body holder to be securely positioned without requiring complex manufacturing features like undercuts or high dimensional accuracy, thus simplifying both manufacturing and assembly while maintaining reliable backflow prevention
2Reliability
If undercuts are used in the fluid channel to secure the closing body holder, then the reliability of the connection is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The invention removes the undercut feature from the fluid channel design entirely. Instead, a positioning element is introduced that provides the necessary secure connection through frictional engagement, eliminating the need for complex undercut geometries and their associated high manufacturing precision requirements
Solution Approach 2:
The positioning element serves as a simple, easily manufacturable component that replaces the complex undercut structure. It can be produced with standard tolerances and provides sufficient connection security for the application, making the overall system more manufacturable and cost-effective
3Ease of manufacture
If a frictional connection is used between the closing body holder and fluid channel, then the ease of manufacture and assembly is improved, but the connection strength may be insufficient
Solution Approach 1:
The positioning element acts as a mediator that enhances the frictional connection between the closing body holder and the fluid channel. It provides a dedicated contact surface with appropriate friction characteristics, ensuring sufficient connection strength while maintaining the simplicity of the frictional connection approach
Solution Approach 2:
The invention optimizes the frictional connection parameters through the positioning element, such as contact area, surface roughness, and normal force distribution, to achieve sufficient connection strength. This allows the use of simple frictional connection without compromising the strength of the assembly
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
The solution enables easy assembly and transportation of the feed pump, reduces manufacturing complexity, and maintains fluid pressure in the system by preventing backflow, while ensuring the closing body holder can be easily manufactured and installed without high dimensional accuracy demands.
Implementation Method 1
the closing element is lifted from the valve seat by the fluid dynamic forces... the closing element would be moved against the valve seat by the fluid dynamic forces, thereby blocking fluid flow in the second direction
Implementation Method 2
the valve body holder is held against the inner circumferential wall of the fluid channel or the valve body holder receptacle by a frictional connection that can be overcome
Data Source
Figure 1
Figure 2~3
AI summary
A valve arrangement (100) adapted to allow fluid flow in a first direction and to block flow in a second direction opposite to the first, the valve arrangement (100) comprising: - a fluid channel (14), a valve seat (101) and a closing element (102) arranged in the fluid channel (14), for example rotationally symmetrical or spherical, wherein the closing element (102) is configured to prevent fluid flow in the second direction when it is in contact with the valve seat (101) and to allow fluid flow in the first direction when the closing element (102) is lifted from the valve seat (101), - a closing element holder (110) arranged in the fluid channel (14) which is configured to restrict movement of the closing element (102) in the first direction when the closing element (102) is lifted from the valve seat (101),- wherein the locking element holder (110) is held frictionally against an inner circumferential wall (103) of the fluid channel (14) and/or is displaceable in the first direction in a position in which the locking element holder (110) is held against an inner circumferential wall (103) of the fluid channel (14).