Diaphragm Pump Pneumatic Induction Dust Delivery

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Solution Overview

Problem

Existing high-pressure dust pump systems face issues with wear due to friction and mechanical compaction of bulk materials, leading to increased operational costs and the need for re-grinding in applications like dust combustion and gasification systems.

Innovation Solution

A diaphragm pump design for pneumatic high-pressure delivery that maintains bulk material in a fluidized state through pneumatic induction, reducing compaction and wear, with a compact and economical design that separates hydraulic systems into primary and secondary hydraulics for independent pressure control and reduced wear.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stress or pressure

If extrusion press principle is used for high-pressure dust delivery, then high pressure (1-10 MPa) can be achieved, but mechanical compaction occurs and wear increases

Engineering Contradiction:

Improvedelivery pressureVSAvoidmechanical compaction and wear

Core Design Contradiction:

Stress or pressureVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical extrusion press system with a pneumatic induction system. Instead of using mechanical compression to achieve high pressure, the invention uses pneumatic induction to fluidize the bulk material and transport it through a tapered channel, eliminating direct mechanical contact and compaction forces that cause wear and material degradation

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The invention employs pneumatic induction to fluidize bulk material and transport it through the pump system. Gas is introduced to create a fluidized state, allowing the material to be moved pneumatically rather than mechanically, thereby reducing friction and wear while maintaining high-pressure delivery capability

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Stress or pressure

If piston pump principle is used for high-pressure applications, then high pressure can be achieved, but wear to dry-running piston rings increases

Engineering Contradiction:

Improvedelivery pressureVSAvoidwear to piston rings

Core Design Contradiction:

Stress or pressureVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the piston pump mechanical system with a diaphragm-based pneumatic system. The diaphragm separates the hydraulic drive mechanism from the bulk material, eliminating direct mechanical contact between moving parts and the material, thereby preventing wear to piston rings while maintaining high-pressure delivery

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If gravity-driven filling process is used in dust pumps, then filling can be achieved, but large cross sections and dimensions are necessary

Engineering Contradiction:

Improvefilling processVSAvoidpump head dimensions

Core Design Contradiction:

Ease of manufactureVSVolume of moving object

Solution Approach 1:

The patent inverts the traditional gravity-driven filling approach by using pneumatic induction to draw material upward into the pump chamber. Instead of relying on gravity to fill from above, the pneumatic system creates a pressure differential that draws material in, allowing for a more compact chamber design without sacrificing filling efficiency

Inventive Principle:

Principle #13The other way round (Inversion)

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 reduces wear, saves structural height, lowers hydraulic assembly costs, and decreases high-pressure gas demand, enabling efficient and continuous bulk material delivery with reduced cycle times and energy consumption.

Implementation Method 1

the filling is performed by pneumatic induction, wherein the bulk material is kept in a loosened, flowable state throughout the entire pumping process

Methodology Applied

Scientific EffectPneumatic induction: Fluidisation

Implementation Method 2

an elastic, movable diaphragm (3) is situated in a pressure-bearing housing (9), which diaphragm separates the dust chamber (1) from the hydraulic chamber (2)

Methodology Applied

Scientific EffectHydraulic pressure transmission: Hydraulic Press

Data Source

PatentUS10914299B2Diaphragm pump comprising dust suction from below

Publication Date: 2021.02.09 DIPL ING ERNST SCHMITZ GMBH & CO KG MASCH & APP

AI summary

A diaphragm pump for pneumatic high-pressure delivery of 1 to 10 MPa of fluidised dusts, in which filling occurs from below via pneumatic suction by hydraulic reciprocating movement of the diaphragm and also by applying a negative pressure. The dust is held in a loosened fluidised state over the entire pump operation, wherein the high-pressure gas requirement is low. A drive of the diaphragm pump by a hydraulic pressure intensifier and multiple diaphragm pumps are operated in a phase-displaced manner with respect to each other. A dust delivery system which uses the diaphragm pump is operated with a low drive power.