Hybrid Pump Casing with Embedded Metal Liner
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Solution Overview
Problem
Conventional pump casings made entirely of metal are difficult to process and have high manufacturing costs, while those made entirely of plastic are prone to distortion when combined with piping.
Innovation Solution
A pump casing design that incorporates a metal member within a plastic body, using insert molding to surround an integral liner with sub-metal members, preventing distortion and enhancing strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the casing is made entirely of metal, then strength and distortion prevention are improved, but manufacturing cost and processing difficulty increase
Solution Approach 1:
The patent applies composite materials by combining metal members with plastic material to form a hybrid casing structure. The metal members provide necessary strength and distortion prevention, while the plastic material reduces manufacturing cost and improves ease of production. This composite approach resolves the contradiction between strength requirements and manufacturing economy.
2Ease of manufacture
If the casing is made entirely of plastic, then manufacturing cost decreases, but distortion occurs when combined with piping
Solution Approach 1:
The patent uses composite materials combining plastic with metal members to maintain low manufacturing cost while preventing distortion. The metal members are strategically positioned within the plastic casing to provide structural support and prevent distortion during piping connection, thus resolving the contradiction between cost reduction and dimensional stability.
Solution Approach 2:
The patent applies local quality by placing metal members only in specific critical areas of the casing where distortion prevention is most needed, rather than making the entire casing from metal. This localized reinforcement maintains cost-effectiveness while providing sufficient stability during piping combination.
3Stability of the object's composition
If metal members are included in plastic body, then distortion is prevented and strength is enhanced, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by embedding the metal members into the plastic body during the molding process itself, rather than adding them separately after manufacturing. This integrated approach, where metal members are positioned and fixed in advance during mold formation, simplifies the overall processing despite the composite nature of the material.
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 allows for easy processing and low manufacturing costs while preventing distortion when the casing is combined with piping, offering improved strength compared to purely plastic casings.
Implementation Method 1
at least one hole in which melted plastic is filled when an insert molding is performed is formed on the metal member, and the metal member is included in the body through the insert molding
Data Source
AI summary
Various pumps capable of preventing distortion are disclosed. A casing of the pump comprises a metal member configured to have at least two sub metal members and a body. Here, the sub metal members are included in the body, and the body is formed of plastic.