Electromagnetic Pump Intake Valve Tapered Ball Guide
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Solution Overview
Problem
In electromagnetic pumps, improper positioning of balls in check valves can lead to hydraulic oil leakage, especially when the valves are compactly designed to fit within limited spaces, resulting in reduced pump performance.
Innovation Solution
The use of a taper-shaped inner peripheral surface in the opening member of the intake open-close valve ensures accurate positioning of the ball, preventing hydraulic fluid leakage and allowing the pump to operate effectively, with simpler processing requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the check valve is compactly designed to fit within limited space in the cylinder, then the device complexity is reduced and space utilization is improved, but the manufacturing precision required for ball positioning increases
Solution Approach 1:
The opening member features a localized tapered inner peripheral surface at the ball receiving position, while other parts maintain standard cylindrical geometry. This localized geometric modification provides precise ball positioning without requiring high precision throughout the entire valve structure, resolving the contradiction between compact size and positioning accuracy.
Solution Approach 2:
The inner peripheral surface of the opening member transitions from a standard cylindrical shape to a tapered shape with a specific angle (5-15 degrees). This parameter change in the geometric configuration creates a self-centering effect for the ball, enabling accurate positioning within the compact valve structure without requiring complex processing.
2Ease of manufacture
If simpler processing is used for the opening member, then the ease of manufacture is improved, but the manufacturing precision of the ball positioning may deteriorate
Solution Approach 1:
Instead of requiring high precision throughout the entire opening member, only a localized tapered surface is precision-formed. The majority of the opening member can be manufactured using standard, simpler processes, while the critical ball-contact region receives the tapered treatment to ensure positioning accuracy.
Solution Approach 2:
The tapered inner peripheral surface creates a conical geometry that naturally guides and centers the spherical ball through geometric constraint. This curved/tapered surface design achieves precise positioning through its shape alone, eliminating the need for complex adjustment mechanisms or high-precision machining throughout the entire component.
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 reliably suppresses hydraulic fluid leakage and enables the electromagnetic pump to perform optimally by ensuring proper ball positioning without complex processing, enhancing the pump's efficiency and assembly ease.
Implementation Method 1
an electromagnetic portion that moves the piston forward
Implementation Method 2
a biasing member that moves the piston backward
Implementation Method 3
a second biasing member that presses the ball against the opening portion from a side opposite to a direction in which the hydraulic fluid moves
Data Source
AI summary
An electromagnetic pump including a reciprocating piston in a cylinder; an electromagnetic portion that moves the piston forward; a first biasing member that moves the piston backward; a support member that supports the first biasing member and defines a pump chamber together with the cylinder and the piston; an intake valve that is incorporated into the support member, is connected to an intake port and prohibits hydraulic fluid from moving in reverse; and a discharge valve that is connected to a discharge port and prohibits the hydraulic fluid from moving in reverse. The intake valve includes a ball, an opening portion of the intake port, and a second biasing member that presses the ball against the opening portion from a side opposite to a direction in which the hydraulic fluid moves. In the opening member, an inner peripheral surface that receives the ball is formed in a taper shape.