Valve Core Support Mechanism With Heat-Blocking Diaphragm Isolation
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Solution Overview
Problem
The increasing flow rates in booster pumps lead to excessive heating of motors and bearings, which reduces the service life and reliability of the diaphragm, a critical component, due to rapid heat transfer from the bearing support to the diaphragm.
Innovation Solution
A support mechanism with a heat-blocking member embedded in a guide groove on the base, which reduces heat transfer between the base and diaphragm, using materials like PA6+30GF or ceramics, and a separate base design allows for high-speed diaphragm movement with reduced fault rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the flow rate of the booster pump is increased to meet market demands, then the productivity is improved, but the temperature of the motor and bearing increases, leading to shortened diaphragm service life
Solution Approach 1:
The bearing support is divided into two separate components: the base and the heat-blocking member. This segmentation allows the heat-blocking member to be positioned between the bearing support and the diaphragm, creating a thermal barrier that isolates the diaphragm from heat generated by high-speed operation, thereby enabling high flow rates without compromising diaphragm service life
Solution Approach 2:
The heat-blocking member acts as an intermediary component between the bearing support and the diaphragm. It specifically blocks heat transfer from the bearing support to the diaphragm, allowing the diaphragm to operate at lower temperatures even when the motor and bearing operate at high temperatures during high flow rate operation
2Device complexity
If the bearing support directly contacts the diaphragm to simplify the structure, then the device complexity is reduced, but the heat transfer rate from bearing support to diaphragm increases, shortening diaphragm service life
Solution Approach 1:
The heat-blocking member is introduced as an intermediary component between the bearing support and the diaphragm. This member specifically blocks heat transfer while maintaining the structural simplicity of the support mechanism, ensuring the diaphragm is protected from thermal damage without adding complex support structures
Solution Approach 2:
The heat-blocking member is made from materials with specific thermal properties (such as PA6+30GF or ceramics) that provide thermal insulation. This use of composite or specialized materials allows the heat-blocking member to effectively reduce heat transfer while maintaining structural integrity and simplicity
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 heat-blocking member prolongs the diaphragm's service life and lowers fault rates by minimizing heat transfer, optimizing the valve core assembly and booster pump performance while reducing costs.
Implementation Method 1
the heat-blocking member is configured to support a diaphragm, and the heat-blocking member is configured to drive the diaphragm to move; and a cross-sectional area of the guide groove gradually decreases along a depth direction of the guide groove
Data Source
AI summary
A valve core assembly includes an eccentric wheel including a shaft body, a support mechanism sleeved on the shaft body, and a diaphragm connected to the support mechanism. An included angle is formed between an axis of the shaft body and a rotation axis of the eccentric wheel. A contact surface of the support mechanism that contacts the diaphragm extends towards a direction away from the diaphragm in a radial direction of the shaft body from outside to inside.