Rotor Polishing Device for Rotary Screw Compressors

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Solution Overview

Problem

Rotary screw compressors require extensive manual disassembly and cleaning, leading to prolonged downtime and potential component failure if not properly maintained, as existing methods are inefficient and labor-intensive.

Innovation Solution

A polishing device for rotary screws, comprising a housing with a polishing tank, lapper pumps, and gear assemblies, allowing for automated polishing and recycling of lapper materials, enabling convenient and efficient cleaning of rotors with customizable speed and direction control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual disassembly and cleaning is used, then labor flexibility is maintained, but productivity is extremely low and maintenance time is excessively long

Engineering Contradiction:

Improvemaintenance speedVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical cleaning operations with an automated polishing machine that uses controlled mechanical rotation, abrasive media, and automated fluid delivery systems to perform rotor maintenance functions that were previously done by hand

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system incorporates self-contained features including integrated fluid reservoirs, automated pump systems that circulate polishing media, and built-in filtration systems that allow the machine to maintain its own operating fluids without external intervention during the polishing process

Inventive Principle:

Principle #25Self-service

2Manufacturing precision

If extensive manual cleaning is performed, then thoroughness may be achieved, but loss of time is significant and operational downtime increases

Engineering Contradiction:

Improvepolishing qualityVSAvoidmaintenance downtime

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The polishing machine maintains continuous operation through automated fluid circulation systems that constantly supply fresh abrasive media to the rotor surfaces and remove spent materials, eliminating the intermittent manual intervention required in traditional methods and enabling sustained high-speed polishing

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system controls polishing quality by precisely adjusting parameters such as rotation speed, abrasive media flow rate, and applied pressure through automated controls, ensuring consistent high-quality results while maintaining rapid processing speeds that minimize downtime

Inventive Principle:

Principle #35Parameter changes

3Reliability

If manual cleaning is used, then equipment cost is low, but reliability of maintenance outcome is poor and component failure risk increases

Engineering Contradiction:

Improvemaintenance effectivenessVSAvoidmachine complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system incorporates feedback mechanisms where sensors monitor the polishing process parameters and the condition of rotor surfaces, automatically adjusting operational parameters to ensure consistent quality outcomes and preventing incomplete or defective polishing that could lead to component failure

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The machine performs preliminary preparation functions including automated rotor positioning, surface inspection, and fluid system priming before the main polishing operation begins, ensuring that all conditions are optimal for reliable polishing outcomes while reducing the risk of operational errors

Inventive Principle:

Principle #10Preliminary action

4Productivity

If automated polishing is implemented, then productivity increases and maintenance time decreases, but device complexity and initial cost increase

Engineering Contradiction:

Improvemaintenance throughputVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The polishing machine is designed as a multi-functional system that can handle various rotor sizes and types, perform multiple operations including polishing, cleaning, and inspection, and accommodate different abrasive media types, thereby justifying the initial complexity investment through versatile high-productivity operation across multiple maintenance scenarios

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 significantly reduces the time and labor required for rotor maintenance, ensuring proper polishing and extending the operational life of rotary screw compressors by providing a mechanized solution for cleaning and polishing, thus minimizing downtime and preventing component failure.

Implementation Method 1

lapper pumps

Methodology Applied

Scientific EffectPump: Pump

Implementation Method 2

gear assemblies

Methodology Applied

Scientific EffectGear mechanism: Gear

Data Source

PatentUS11712776B2Rotor polishing device

Publication Date: 2023.08.01 SULLIVAN TERRY

AI summary

A rotor polishing device, including a housing with a space therein for holding rotors in need of polishing, an inlet for pumping a polishing lapper into the housing, and a rotational assembly for rotating the rotors during the polishing process. The rotor polishing device is useful for polishing rotors commonly used by rotary screw compression systems.