Mixing and Discharging Device With External Bearing Support

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Solution Overview

Problem

Existing mixing and discharging devices face challenges with difficult disassembly and maintenance of the impeller structure and main shaft, leading to frequent wear and high manufacturing complexity, due to the bottom end of the main shaft being fixed on the bottom surface of the main shell.

Innovation Solution

The mixing and discharging device design features a main shaft with its bottom end fixed on the impeller structure within the shell, eliminating the need for bearings on the bottom surface, facilitating easy disassembly and maintenance, and utilizing a bearing assembly outside the shell for support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the bottom end of the main shaft is fixed on the bottom surface of the main shell, then the shaft is supported and fixed, but the disassembly and maintenance of the impeller structure and main shaft become difficult

Engineering Contradiction:

Improveshaft support stabilityVSAvoiddisassembly and maintenance difficulty

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The patent divides the shaft support system into two independent parts: (1) the main shaft bottom end fixed on the impeller structure inside the shell, and (2) a separate bearing assembly outside the shell that provides support. This segmentation allows the impeller and shaft to be easily removed for maintenance while the bearing assembly remains in place to maintain shaft stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extracts the bearing assembly from inside the shell and places it outside. The bearing assembly is detached from the shell and connected to the main shaft, allowing the main shaft to be supported without being fixed to the shell bottom. This extraction enables easy disassembly of the impeller structure while maintaining shaft support stability.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If the bottom end of the main shaft is fixed on the bottom surface of the main shell, then the shaft is supported, but the manufacturing complexity increases

Engineering Contradiction:

Improveshaft support stabilityVSAvoidmanufacturing complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The manufacturing process is segmented into independent modules: the main shaft with impeller structure can be manufactured and assembled separately, and the bearing assembly is manufactured as a separate component. This reduces manufacturing complexity by avoiding the need to integrate shaft support into the shell structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bearing assembly is extracted from the shell structure and manufactured as a separate, standalone component. This simplifies the shell manufacturing process and allows the bearing assembly to be produced independently, reducing overall manufacturing complexity while maintaining shaft support stability.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of repair

If the bottom end of the main shaft is separated from the shell and fixed on the impeller structure, then disassembly and maintenance become easy, but the shaft may become cantilevered

Engineering Contradiction:

Improvedisassembly and maintenance easeVSAvoidshaft stability

Core Design Contradiction:

Ease of repairVSStability of the object's composition

Solution Approach 1:

The bearing assembly is extracted from the shell and repositioned outside, where it provides support to the main shaft without requiring the shaft to be fixed to the shell bottom. This external bearing support prevents the shaft from being cantilevered while enabling easy disassembly of the impeller structure.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The bearing assembly acts as an intermediary between the main shaft and the external support structure. It provides the necessary support and stability to the shaft while allowing the impeller structure to be easily removed and reinstalled, thus mediating between the conflicting requirements of ease of maintenance and shaft stability.

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

This design simplifies assembly, disassembly, and maintenance, reduces manufacturing complexity, and enhances the stability and reliability of the device by avoiding cantilevered shaft issues.

Implementation Method 1

an impeller structure is arranged in the tank; and a main shaft is driven to rotate so as to drive the impeller structure to rotate and mix the solid material with the liquid material

Methodology Applied

Scientific EffectMechanical mixing: Stirring

Data Source

PatentUS12404758B2Mixing and discharging device, mixing and discharging system and fracturing system

Publication Date: 2025.09.02 YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD

AI summary

A mixing and discharging device, a mixing and discharging system and a fracturing system are provided. The mixing and discharging device comprises a main shell, an impeller structure and a main shaft. The main shell comprises a top cover; the impeller structure is in the main shell; the main shaft is configured to drive the impeller structure to rotate, penetrates through the top cover and extends into the main shell; a bottom end of the main shaft is in the main shell and is fixed on the impeller structure, and the bottom end of the main shaft is separated from the shell.