Self-Priming Fertilizer Injector Valve Assembly

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Solution Overview

Problem

Existing fertilizer injectors in sprinkler systems are not self-priming and orientation-dependent, limiting their efficiency and versatility in delivering liquid fertilizer.

Innovation Solution

A valve assembly with a conical surface and flanges, supported by projections, is integrated into the plunger chamber to create a self-priming mechanism that allows fluid flow in one direction, enabling the apparatus to draw fertilizer from any orientation and maintain sealing effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a traditional fertilizer injector design is used, then the device structure is simple, but the device is not self-priming and is orientation-dependent

Engineering Contradiction:

Improveself-priming capability and orientation independenceVSAvoidvalve assembly structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The valve assembly is designed to be self-priming, automatically drawing fertilizer into the mixing chamber without external intervention. The conical valve member and retaining members work together to create automatic fluid intake based on pressure differentials, eliminating the need for manual priming operations.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The valve assembly is divided into separate components: a valve member with conical surface, a first retaining member with conical surface, and a second retaining member with projections. This segmentation allows each component to perform its specific function while maintaining overall system compactness and orientational flexibility.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If a valve assembly with conical surfaces and multiple retaining members is added, then self-priming and orientation independence are achieved, but the device complexity increases

Engineering Contradiction:

Improveorientation independenceVSAvoidnumber of components

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The conical valve member serves multiple functions: it acts as a sealing surface, a flow director, and a component that works with the retaining members to create the self-priming effect. This multi-functionality reduces the need for additional separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The conical surfaces of the valve member and first retaining member provide curved sealing surfaces that maintain effective sealing regardless of the device's orientation. The conical geometry allows the valve to function effectively in any position, achieving orientation independence.

Inventive Principle:

Principle #14Spheroidality (Curvature)

3Adaptability or versatility

If the valve member is made movable in the space between retaining members, then self-priming capability is improved, but the device complexity increases

Engineering Contradiction:

Improveself-priming capabilityVSAvoidvalve assembly structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The movable valve member automatically responds to pressure differentials created during operation, opening and closing based on flow conditions without external control. This self-regulating behavior provides self-priming capability while minimizing the need for complex control mechanisms.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The valve member acts as an intermediary between the fertilizer reservoir and the mixing chamber, controlling fluid flow based on pressure conditions. This intermediary function enables the self-priming effect by automatically allowing fertilizer intake when needed and preventing backflow when not needed.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 enables the fertilizer injector to be self-priming and orientation-independent, ensuring efficient fertilizer delivery and mixing with water, addressing the limitations of prior art devices.

Implementation Method 1

the valve member and the first retaining member each include a conical surface and the conical surface of the valve member seals against the conical surface of the first retaining member so as to prevent fluid flow through the valve assembly in at least one direction

Methodology Applied

Scientific EffectConical surface sealing:

Implementation Method 2

a paddle wheel positioned to be rotated by water flowing through the injector mechanism body

Methodology Applied

Scientific EffectFluid-driven rotation:

Implementation Method 3

a plunger movably positioned in the plunger chamber... move the plunger back and forth within the plunger chamber

Methodology Applied

Scientific EffectMechanical displacement:

Data Source

PatentUS10455761B1Apparatus for adding fertilizer to water in a sprinkler system

Publication Date: 2019.10.29 AMERICAN HYDRO SYST

AI summary

An apparatus for injecting liquid fertilizer into a water flow line in a sprinkler system, includes an injector mechanism body having a water inlet and a water outlet adapted to be connected in the water flow line of the sprinkler system so that water flows through at least a portion of the injector mechanism body, a plunger chamber, a plunger movably positioned in the plunger chamber, a paddle wheel positioned to be rotated by water flowing through the injector mechanism body, a plunger gear coupled to the paddle wheel and the plunger so as to rotate when the paddle wheel rotates so as to move the plunger back and forth within the plunger chamber and a valve assembly secured at a fixed location in the plunger chamber.