Pump Housing Spacer for Independent Inner Cavity Seal Testing
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Solution Overview
Problem
Existing pump devices face challenges in accurately detecting the sealing performance of multiple inner cavities, which affects the overall reliability and efficiency of fluid control.
Innovation Solution
The pump device incorporates a separating member with specific flange and cylinder portions, allowing for detection of sealing issues by leaking detection medium from connections between housings and the separating member, enabling separate and combined testing of inner cavity seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional sealing detection methods are used for multiple inner cavities, then the detection process becomes complex and time-consuming, but the sealing accuracy cannot be sufficiently improved
Solution Approach 1:
The pump device is divided into multiple independent inner cavities (first inner cavity and second inner cavity) separated by a separating member. Each cavity can be independently sealed and tested, allowing separate detection of sealing performance for each cavity without interfering with others, thus improving detection accuracy while maintaining manageable system complexity
Solution Approach 2:
A separating member with flange portions acts as an intermediary component between the first and second inner cavities. This separating member provides dedicated sealing surfaces and connection interfaces that enable independent sealing detection for each cavity, serving as a mediator that facilitates accurate measurement without requiring complex integrated testing systems
2Measurement precision
If separate sealing detection for each inner cavity is implemented, then sealing accuracy improves, but manufacturing cost and labor cost increase
Solution Approach 1:
The separating member serves multiple functions simultaneously: it divides the pump into separate inner cavities, provides sealing surfaces for both cavities, and creates integrated connection interfaces with the first and second housings. This merging of functions into a single component enables independent sealing detection for both cavities while avoiding the need for separate testing fixtures or additional manufacturing steps, thus controlling costs
Solution Approach 2:
The separating member is designed as a universal component that performs multiple sealing and structural functions for both inner cavities. By making this single component serve multiple purposes (separation, sealing, structural support, and detection interface), the design achieves accurate sealing detection for both cavities without requiring additional specialized parts or increasing manufacturing complexity
3Device complexity
If the first housing and second housing are directly connected, then device complexity is reduced, but sealing detection accuracy deteriorates due to inability to separately test each cavity
Solution Approach 1:
Rather than directly connecting the first and second housings, a separating member is inserted between them to create distinct, separable zones for the first and second inner cavities. This segmentation allows each cavity to be independently sealed and tested, improving sealing detection accuracy while maintaining relatively simple housing structures that can be assembled and disassembled
Data Source
AI summary
Disclosed is a pump device, comprising a rotor assembly, a stator assembly and a spacer. The pump device has a first inner cavity and a second inner cavity; the pump device has a first housing and a second housing, the first housing partially covers the rotor assembly, the second housing at least partially covers surrounds an outer periphery of the stator assembly; the first housing and the spacer are fixedly connected by means of welding, and the connection position between the first housing and the spacer is sealed; the second housing and the spacer are fixedly connected by means of welding, and the connection position between the second housing and the spacer is sealed; the spacer comprises a first flange portion and a cylinder portion.