Grease Pressing Disc With Adjustable Skirt for Variable Drum Sizes

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Solution Overview

Problem

Existing grease filling machines cannot be directly installed on grease packaging barrels due to non-standardized drum sizes and issues with the grease pressing disc fitting, leading to spillage or getting stuck, and the inability to thoroughly clean the drum walls.

Innovation Solution

A grease filling machine with a quick locking mechanism and an adjustable, inverted-V-shaped grease pressing disc with a scraping skirt that automatically adjusts to different drum diameters and includes an air releasing port for easy installation and thorough cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed-size grease pressing disc is used, then the structure is simple, but it cannot adapt to non-standardized drum diameters and causes spillage or getting stuck

Engineering Contradiction:

Improveadaptability to different drum diametersVSAvoidstructure complexity of grease pressing disc

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The grease pressing disc employs a flexible scraping skirt that can dynamically change its effective diameter as it moves up and down the drum wall. The skirt's flexibility allows it to conform to different drum diameters automatically, eliminating the need for multiple fixed-size discs while maintaining a simple overall structure.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The grease pressing disc changes its operational parameters (effective diameter) based on its position within the drum. As the disc moves to different heights corresponding to different drum diameters, the flexible skirt adjusts its configuration to match the local drum diameter, enabling adaptation without increasing structural complexity.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If the drum cover is directly fixed on the grease packing drum, then the installation is simple, but the non-standardized drum sizes prevent universal application

Engineering Contradiction:

Improveease of installationVSAvoidcompatibility with different drum sizes

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The drum cover incorporates a quick locking mechanism with adjustable locking components that can accommodate various drum diameters. This universal design allows the same drum cover to be installed on different-sized drums without requiring custom-made covers for each drum size, maintaining ease of installation while achieving broad compatibility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The quick locking mechanism includes adjustable elements that can dynamically adapt to different drum circumferences. The locking components can be repositioned along the drum periphery to match different diameters, enabling the same structure to universally fit various drum sizes while maintaining simple installation procedures.

Inventive Principle:

Principle #15Dynamics

3Object-affected harmful factors

If a small grease pressing disc is used, then it can fit narrow drums, but grease spill-over occurs on the top part of the drum

Engineering Contradiction:

Improvegrease spill-overVSAvoidcoverage area of grease pressing disc

Core Design Contradiction:

Object-affected harmful factorsVSArea of stationary object

Solution Approach 1:

The flexible scraping skirt dynamically adjusts its effective coverage area based on the drum diameter at each position. When the disc is at the top of the drum where the diameter is larger, the skirt extends further outward to increase coverage and prevent spill-over. When lower on the drum where the diameter is smaller, the skirt naturally contracts, maintaining optimal coverage without excessive area.

Inventive Principle:

Principle #15Dynamics

4Object-affected harmful factors

If a large grease pressing disc is used, then it can cover wide drums, but the disc gets stuck in the middle and requires replacement

Engineering Contradiction:

Improvegrease spill-over preventionVSAvoidoperational continuity

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The flexible scraping skirt's ability to dynamically adjust its configuration prevents the disc from getting stuck. As the disc moves through different sections of the drum with varying diameters, the skirt flexes and conforms to each section, maintaining continuous contact with the drum wall without creating binding conditions that would cause the disc to stick or require replacement.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11802660B2Simple grease filling machine

Publication Date: 2023.10.31 ZHEJIANG RONGPENG AIR TOOLS CO LTD

AI summary

An easy grease filling machine is disclosed. The grease filling machine comprises a drum cover, a pump body that goes through the drum cover, a grease pressing disc fitted on the pump body. The periphery of the drum cover is configured with a quick locking mechanism compatible to the rim of the grease packing drum and fixed with the drum body, and is matched by a grease pressing disc with its size automatically changeable when it moves up or down inside the drum body based on the different diameters of the drum body from bottom to top. The grease pressing disc comprises a disc body and a grease scraping skirt configured on the outer periphery of the disc body with its cross section shaped like an inverted V.