Flexible Sealing Support for High-Speed Pulverizer Noise Reduction

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Solution Overview

Problem

Conventional high-speed pulverizers suffer from non-concentric installation of the main machine and cup body, leading to short bearing and sealing member life, and generate loud noise due to rigid connection of the outer casing with the bearing and pulverizing cavity.

Innovation Solution

A support device with a flexible sealing member and a fully sealed bearing structure, featuring an outer casing with limiting rings, inner casing, and a one-way structure to create a vacuum space for noise reduction, allowing for automatic centering and reducing vibration and dust ingress.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the outer casing is rigidly connected with the bearing and pulverizing cavity, then structural stability is improved, but noise increases due to high-speed rotation

Engineering Contradiction:

Improvestructural stabilityVSAvoidnoise

Core Design Contradiction:

Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The patent applies a flexible damping ring made of elastic material between the outer casing and bearing, and another damping ring between the outer casing and pulverizing cavity. These flexible elements absorb vibration and reduce noise while maintaining structural stability, directly resolving the contradiction between rigidity and noise reduction.

Inventive Principle:

Principle #30Flexible shells and thin films

2Adaptability or versatility

If the main machine and cup body are installed non-concentrically, then installation flexibility is improved, but bearing and sealing member life decreases due to lateral force

Engineering Contradiction:

Improveinstallation flexibilityVSAvoidbearing and sealing member life

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces a dynamic adjustment mechanism where the cutter shaft can automatically adjust its position within the bearing through a adjustable support structure. This allows the system to accommodate non-concentric installation while maintaining proper alignment during operation, preventing lateral forces and extending component life.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs a damping ring as an intermediary element between the outer casing and bearing, which absorbs the lateral forces caused by non-concentric installation. This mediator protects the bearing and sealing members from damage while allowing installation flexibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11471894B2Support device and high-speed pulverizer having the same

Publication Date: 2022.10.18 SEALDO TECH CORP

AI summary

A support device and a high-speed pulverizer having the support device are disclosed. The support device includes an outer casing. The outer casing has a mounting cavity therein. A bearing is retained in the mounting cavity through a sealing member. The sealing member is a movable structure that is flexibly connected, which realizes automatic centering in the working process, improves the service life of the bearing and the sealing member, and realizes the effect of vibration reduction and noise reduction.