Propane-Powered Mobile Slurry Vacuum Cart for Concrete Processing

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Solution Overview

Problem

Existing equipment is inefficient in collecting and containing the thick slurry generated during concrete grinding and polishing operations, as it is designed for clean water or janitorial use and cannot handle the viscous residue effectively.

Innovation Solution

A mobile cart equipped with a high-power propane engine directly coupled to a suction pump, a containment vessel, and a squeegee for slurry collection, which can be used in conjunction with an air blower for drying and emptying the tank, providing a efficient solution for wet vacuuming and slurry management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional vacuum equipment designed for clean water or janitorial use is used, then the equipment is simple and easy to operate, but it cannot effectively collect or contain thick slurry generated during concrete processing

Engineering Contradiction:
Improveslurry collection effectivenessVSAvoidequipment complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system divides slurry collection into two distinct components: a squeegee for initial slurry gathering and a vacuum system for suction and containment. This segmentation allows each component to be optimized for its specific function, with the squeegee handling the viscous slurry collection and the vacuum system managing the suction and containment, thereby solving the problem of ineffective slurry collection while maintaining reasonable overall system complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A squeegee is introduced as an intermediary device between the concrete processing operation and the vacuum system. The squeegee first collects and channels the thick slurry toward the vacuum intake, acting as a mediator that bridges the gap between conventional vacuum equipment and the challenging slurry material, thereby improving collection effectiveness without requiring complete redesign of the vacuum system

Inventive Principle:
Principle #24Intermediary (Mediator)

2Power

If a high-power propane engine is used to drive the suction pump, then slurry collection power and effectiveness are improved, but equipment weight and fuel requirements increase

Engineering Contradiction:
Improvesuction pump powerVSAvoidcart weight
Core Design Contradiction:
PowerVSWeight of moving object

Solution Approach 1:

The system uses a propane engine to drive a suction pump that creates a vacuum field for slurry collection. The pneumatic/hydraulic principle of using pressurized gas (propane) to generate mechanical power allows the system to achieve high suction capability without requiring equally heavy electric motors or other power systems, thereby balancing power requirements with acceptable equipment weight

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The system employs a mobile cart design with wheels that can be manually maneuvered to the concrete processing location. This dynamic, mobile platform allows the heavy propane engine and vacuum system to be positioned only where needed, reducing the need for permanently installed heavy infrastructure while maintaining high power capability during operation

Inventive Principle:
Principle #15Dynamics

3Object-affected harmful factors

If wet polishing is used to cool abrasives and eliminate dust, then cooling and dust control are improved, but slurry generation increases and requires extensive collection and disposal

Engineering Contradiction:
Improvedust controlVSAvoidslurry quantity
Core Design Contradiction:
Object-affected harmful factorsVSQuantity of substance

Solution Approach 1:

The system converts the harmful slurry byproduct of wet polishing into a collectible and containable material. By using the squeegee and vacuum system in combination, the slurry that would otherwise be dispersed and difficult to manage is instead efficiently collected and contained in a tank, transforming a disposal problem into a manageable collection process that eliminates dust while controlling slurry

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

4Quantity of substance

If dry polishing is used instead of wet polishing, then slurry generation is reduced and cleanup is simpler, but dust generation increases and requires effective dust containment

Engineering Contradiction:
Improveslurry quantityVSAvoiddust generation
Core Design Contradiction:
Quantity of substanceVSObject-generated harmful factors

Solution Approach 1:

The vacuum system acts as an intermediary dust containment mechanism in dry polishing operations. By positioning the vacuum intake near the polishing operation and using the squeegee to guide material flow, the system intercepts and contains dust particles before they can disperse into the environment, thereby enabling dry polishing to proceed effectively while maintaining dust control

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

The solution enables efficient collection and containment of slurry from concrete processing operations, improving operational efficiency and environmental handling of wet residues, applicable beyond concrete work to other wet surface processing tasks.

Implementation Method 1

a suction pump powered by the propane engine. A slurry containment vessel mounted on the frame has an input in communication with a squeegee and an output coupled to the suction pump

Methodology Applied
Scientific EffectSuction: Suction

Implementation Method 2

A multi-horsepower propane engine and propane tank are mounted on the frame

Methodology Applied
Scientific EffectCombustion: Combustion

Data Source

PatentUS20240398186A1Mobile cart with high-power slurry vacuum and containment
Publication Date: 2024.12.05 REFUSE MATERIALS INC
  • US20240398186A1 patent drawing
  • US20240398186A1 patent drawing

AI summary

A high-power slurry vacuum cart is well suited to collect and contain any slurry or wet residue produced through concrete and other surface processing operations. A multi-horsepower propane engine and propane tank are mounted on a mobile frame, along with a suction pump powered by the propane engine. A slurry containment vessel mounted on the frame has an input in communication with a squeegee and an output coupled to the suction pump. The squeegee may be adapted for floor contact to collect slurry for transfer to the slurry containment tank. The suction pump is directly coupled to the propane engine through a universal joint, thereby obviating the use of belts, chains or pulleys. The output of the pump may optionally be used as an air blower for surface drying, or the like, as well as use as an air blower to assist in emptying the slurry containment tank.