Diaphragm Pump Integrated Motor Housing Single Seal Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing diaphragm pumps require a two-part casing with two covers, which complicates sealing and increases the number of seals needed, making them less efficient and more prone to leaks.
Innovation Solution
A diaphragm pump design with a single cover and an integrally formed motor housing, featuring a collar portion for sealing, and a motor locking plate with ribs for secure motor retention and a spiral spring mechanism for pressure control, reducing the number of seals and enhancing structural support and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a two-part casing with two covers is used, then the pump structure is more robust, but the sealing complexity increases and the number of seals required increases
Solution Approach 1:
The patent merges the motor housing and pump casing into a single integrated housing structure. The motor housing includes an elongate portion that forms the main casing body, eliminating the need for separate front and rear covers. This integration reduces the number of sealing interfaces from multiple seal locations to a single seal between the motor housing and cover, while maintaining structural robustness through the unified design.
2Strength
If a two-part casing with two covers is used, then the pump structure is more robust, but the number of seals required increases
Solution Approach 1:
The motor housing is designed as a single integrated component that incorporates the casing structure. The elongate portion of the motor housing forms the main body, and the collar portion at the open end provides a sealing surface. This merging reduces the quantity of seals from multiple seal locations (front cover, rear cover, and intermediate seals) to a single seal between the motor housing and the cover, while the robustness is maintained through the integrated structure's inherent strength.
3Device complexity
If a single cover with integrated motor housing is used, then the sealing process is simplified and leak risk is reduced, but the motor retention mechanism becomes more critical
Solution Approach 1:
The motor housing is segmented into functional portions: an elongate portion for receiving the motor body, a collar portion at the open end for sealing with the cover, and a motor locking plate for securing the motor. This segmentation allows each component to perform its specific function optimally - the sealing function is simplified with the collar portion, while the motor retention is ensured through the dedicated locking plate with ribs that engage with the motor, preventing accidental disengagement.
4Ease of manufacture
If the motor housing is integrally formed, then manufacturing complexity is reduced, but precise motor positioning and retention become more challenging
Solution Approach 1:
The integrally formed motor housing is segmented into functional zones with specific geometric features: the elongate portion provides a standardized motor receiving space, the collar portion at the open end provides a precise sealing surface, and the motor locking plate includes ribs that engage with the motor. These segmented features within the integrated housing ensure precise motor positioning and retention while maintaining manufacturing simplicity through the unified structure that can be produced in a single forming process.
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 design simplifies the sealing process, reduces the risk of leaks, and improves motor retention and pressure control, leading to a more reliable and efficient pumping action with only one seal required between the motor housing and the cover.
Implementation Method 1
the wobble plate is subject to nutating motion to cause reciprocating action by the circular regions on the diaphragm plate and provide a pumping action
Implementation Method 2
a spiral spring mechanism for pressure control
Data Source
AI summary
A diaphragm pump comprising a housing for receiving and securely holding a motor, the housing comprising an elongate portion having a closed end and an open end, the elongate portion being adapted to securely receive and house a motor; and a collar portion being provided at the open end of the elongate portion; a cover for the housing, the cover being adapted to engage with the housing; a diaphragm plate extending across the open end of the housing between the collar portion of the housing and the cover and being secured therebetween when the cover is engaged with the collar portion of the housing. The diaphragm pump also includes a wobble plate positioned within the collar portion of the housing.