Mixing Tank Scraper Mechanism for Powder-Liquid Wetting

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Solution Overview

Problem

Existing mixing devices struggle with poor wetting and stirring efficiency due to powder and liquid mixtures accumulating on the inner wall of the mixing tank, leading to inadequate fluidity and mixing inefficiency.

Innovation Solution

A high-efficiency mixing device with a mixing paddle and scraping elements that rotate and revolve around a central axis, accompanied by a scraping motor and transmission system, to scrape off adhering mixtures and enhance wetting and stirring efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a dispersing disc is used to mix powder and liquid, then the mixing device is simple in structure, but the mixture accumulates on the inner wall of the mixing tank leading to poor wetting and stirring efficiency

Engineering Contradiction:
Improvewetting and stirring efficiencyVSAvoidstructure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The mixing system is segmented into multiple functional components: a dispersing disc for initial mixing, scraping elements for removing accumulated mixture, and a mixing paddle for further agitation. Each component performs a specific function, collectively resolving the accumulation problem while maintaining operational simplicity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Scraping elements are introduced as intermediary components between the mixing process and the tank wall. These elements actively remove accumulated mixture before it can form a stable layer, ensuring continuous participation of all materials in the mixing process

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If the mixture is thrown towards the inner wall of the mixing tank during rotation, then the mixing action is enhanced, but the mixture accumulates on the inner wall reducing fluidity

Engineering Contradiction:
Improvemixing intensityVSAvoidmixture fluidity
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The scraping elements are designed to dynamically interact with the rotating mixture and tank wall. They move with the rotation while maintaining contact with the wall, continuously scraping off accumulated material and returning it to the mixing zone, thus maintaining both mixing intensity and fluidity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The scraping elements operate continuously throughout the rotation cycle, ensuring that mixture accumulation is prevented at all times. This continuous action maintains constant fluidity and ensures all materials remain actively involved in the mixing process

Inventive Principle:
Principle #20Continuity of useful action

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 device effectively scrapes off adhering mixtures, improving wetting and stirring efficiency by ensuring full participation of the mixture in the mixing process, enhancing fluidity and saturation.

Implementation Method 1

a plurality of scraper elements that are rotatably arranged in the internal space to scrape off the mixture adhering to the inner wall of the mixing tank body during rotation

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

a mixing paddle that is rotatably arranged in the internal space to agitate the mixture of powder and liquid materials

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Data Source

PatentEP4674520A1Efficient mixing equipment
Publication Date: 2026.01.07 CHEN QING
  • EP4674520A1 patent drawingFigure 1
  • EP4674520A1 patent drawingFigure 2
  • EP4674520A1 patent drawingFigure 3

AI summary

The present application discloses an efficient stirring device 100, which includes a stirring tank body 101 forming an inner tank space to accommodate a mixture of powder materials and liquid materials; a stirring paddle103 and a stirring main shaft 104, at least a portion of which is disposed within the inner tank space and rotates around a central axis; a stirring motor 105; and the efficient stirring device further includes: a plurality of scraping members 101 rotatably disposed within the inner tank space to scrape off the mixture adhering to the inner wall of the stirring tank body when rotating on their own axes; a plurality of transmission shafts 107, at least a portion of which is disposed within the inner tank space; a power main shaft 108 for driving the transmission shafts to rotate on their own axes and to revolve around the central axis; and a scraping motor 109 for driving the scraping main shaft to rotate. Among them, the scraping members are connected to the transmission shafts in a non-rotating manner to move with the transmission shafts, and the transmission shafts are disposed parallel to the power main shaft. The advantage of the present application is that it provides an efficient stirring device that improves the wetting efficiency by disposing scraping members within the inner tank space that rotate on their own axes and revolve to scrape off the mixture adhering to the inner wall of the stirring tank body.