Electromagnetic Pump Piston With Integrated Check Valve
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Solution Overview
Problem
The existing electromagnetic pumps face challenges in ease of assembly due to the small size of components, particularly the snap ring used to restrict the movement of the discharge check valve, which increases the number of parts and complicates the assembly process.
Innovation Solution
The electromagnetic pump incorporates a discharge check valve built into the piston, where the valve is fixed through plastic deformation of the piston by inserting the valve components into a hollow portion and partially pressing the spring receiving surface to elevate the inner peripheral surface, eliminating the need for a dedicated fixing part like a snap ring and reducing the number of parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the electromagnetic pump is made smaller in size, then the discharge check valve is made smaller, but the snap ring becomes smaller and harder to assemble
Solution Approach 1:
The invention merges the discharge check valve with the piston by directly forming the discharge check valve on the piston surface. The valve body, seat, and spring are integrated into the piston structure, eliminating the need for separate snap rings or retaining clips to secure these components. This integration resolves the assembly difficulty caused by miniaturization while maintaining the pump's compact size.
2Reliability
If the snap ring is used to restrict movement of the plug, then the discharge check valve is secured, but the number of parts increases
Solution Approach 1:
The invention combines multiple components into an integrated piston structure. The discharge check valve body, valve seat, and spring are all formed as part of the piston, eliminating the need for separate snap rings, retaining clips, or other fastening components. This reduces the total part count while ensuring reliable fixation through the integrated design.
Solution Approach 2:
The piston is designed to serve multiple functions: it acts as both the moving component of the pump and as the housing for the discharge check valve. The valve body, seat, and spring are all integrated into the piston structure, making the piston a multi-functional component that eliminates the need for separate fixation parts.
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 configuration simplifies the assembly process, reduces the number of parts, and ensures reliable fixation of the discharge check valve while maintaining the piston's functionality and durability.
Implementation Method 1
an electromagnetic portion that moves the piston forward
Implementation Method 2
a spring that moves the piston backward
Data Source
AI summary
An electromagnetic pump including a piston, an electromagnetic portion that moves the piston forward, and a spring that moves the piston backward. The piston including a discharge check valve built in the piston. The piston is formed with a hollow portion that opens in an inner peripheral portion of an end surface of the piston, and a spring receiving surface formed on an outer peripheral portion of the end surface to receive the spring. The discharge check valve is fixed through plastic deformation of the piston by inserting the discharge check valve into the hollow portion from an opening of the piston, and partially pressing a portion of the spring receiving surface of the piston on an inner peripheral side after the insertion to recess the spring receiving surface and elevate an inner peripheral surface of the piston surrounding the hollow portion.