Movable Valve Core Assembly for Electromagnetic Valve Sealing

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Solution Overview

Problem

Existing electromagnetic valve designs face challenges in ensuring sealability and precision in the movable valve core, which are costly and complex to manufacture using traditional machining methods.

Innovation Solution

A movable valve core design featuring a cylindrical core body with a removable leading head and a waterproof membrane, along with a connector that extends into a mounting hole, and a gasket system that changes positions to seal different openings, allowing for improved sealability and reduced machining precision requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional machining methods (die-casting, stamping, or drawing) are used to form the movable valve core in one step, then the structural integrity is maintained, but the machining precision requirements are high, procedures are complex, and costs are high

Engineering Contradiction:

Improvemachining precision of movable valve coreVSAvoidcomplexity of machining procedures

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The movable valve core is divided into multiple components: a core body, a leading head, and a waterproof valve membrane. These components are manufactured separately and then assembled together, which reduces the machining precision requirements for each individual component and simplifies the overall manufacturing process while maintaining structural integrity through the assembly connection.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the movable valve core is made as an integrally formed cylinder, then the manufacturing process is simplified, but the sealability of the chamber where the movable valve core is located becomes difficult to ensure

Engineering Contradiction:

Improvesealability of chamberVSAvoidease of manufacturing movable valve core

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The valve core structure is segmented into a core body, leading head, and waterproof valve membrane that can be manufactured separately and assembled. This segmentation allows each component to be optimized for its specific function, with the waterproof membrane specifically addressing sealability requirements without complicating the overall manufacturing process.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A waterproof valve membrane is introduced as a flexible sealing element between the core body and leading head. This thin film structure provides effective sealing for the chamber while being simple to manufacture and install, resolving the contradiction between sealability and ease of manufacture.

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If a stationary valve core is fixed to the upper portion of the sleeve with a movable valve core below, then the valve structure is stable, but the sealability of the chamber is difficult to ensure

Engineering Contradiction:

Improvestability of valve structureVSAvoidsealability precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

Inventive Principle:

Principle #30Flexible shells and thin films

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 enhances sealability, reduces manufacturing costs, and simplifies the production process, making it more suitable for production-line machining while maintaining effective operation of the electromagnetic valve.

Implementation Method 1

the valve seat is provided therein with a magnetic driving assembly for driving the movable valve core to move up and down

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Implementation Method 2

the gasket has a first position in which the gasket moves upward to seal the upper opening and open the lower opening and a second position in which the gasket moves downward to seal the lower opening and open the upper opening

Methodology Applied

Scientific EffectPhysical blocking: Valve

Data Source

PatentUS10969031B2Movable valve core and electromagnetic valve comprising the same

Publication Date: 2021.04.06 XIAMEN KOGE MICRO TECH

AI summary

The present invention discloses a movable valve core and an electromagnetic valve comprising the same. The movable valve core, comprising a cylindrical core body (1) defining a central axis, a leading head (2) fixed to the core body (1) removably, wherein a water-proof valve membrane (3) sandwiched between the core body (1) and the leading head (2), wherein a mounting hole (4) is axially formed in the core body (1), and a connector (5) for projecting into the mounting hole (4) extends axially from the bottom of the leading head (2), and the connector (5) is fixed into the mounting hole (4). The connector (5) is provided with an outer thread (6), and the leading head (2) is screwed into the mounting hole (4).