Pavement joint cleaning system
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Solution Overview
Problem
Current methods for cleaning paver joints are labor-intensive and inefficient, leading to water impermeability due to debris accumulation, and result in hazardous waste disposal costs, with no effective solution for large surface areas.
Innovation Solution
A portable dry pavement joint cleaning system using a wheeled device with rotating nozzles for compressed air to dislodge debris and a suction head for vacuum removal, eliminating the need for water and reducing waste disposal costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure washing is used to remove crust from paver joints, then the crust is removed, but sludge is produced that requires hazardous waste disposal
Solution Approach 1:
The patent extracts and removes only the crust material from paver joints using a specialized cleaning device that mechanically breaks up and removes crust without generating sludge. The device extracts debris directly from joints through vacuum suction, eliminating the harmful sludge byproduct of pressure washing.
Solution Approach 2:
The invention uses disposable or easily replaceable cleaning elements such as brush rolls and suction components that can be discarded or renewed without generating hazardous waste. The system avoids creating persistent harmful substances by using mechanical removal rather than chemical or high-pressure water methods.
2Ease of operation
If pressure washing is used to clean paver joints, then cleaning is achieved, but additional labor is required for sludge removal
Solution Approach 1:
The patent combines crust breaking, debris loosening, and vacuum suction into a single integrated device. The cleaning head simultaneously breaks up crust and vacuums away debris in one pass, eliminating the need for separate sludge removal operations and improving overall productivity.
Solution Approach 2:
The cleaning device is self-contained with an onboard vacuum system that automatically captures and removes debris as it is loosened. The system serves itself by incorporating all necessary functions (crust breaking, debris loosening, and removal) into one unit, eliminating the need for additional labor steps.
3Area of stationary object
If pressure washing is used on large surface areas, then cleaning coverage is increased, but time and labor requirements increase significantly
Solution Approach 1:
The patent employs a continuous vacuum suction process that operates throughout the entire cleaning cycle. As the device moves across large surface areas, the vacuum system continuously captures debris without interruption, maintaining constant productive action and reducing total cleaning time compared to intermittent or multi-step processes.
Solution Approach 2:
The cleaning device is divided into modular segments including multiple brush rolls, adjustable nozzles, and segmented vacuum chambers. This segmentation allows the device to efficiently cover large areas by maintaining consistent cleaning action across multiple zones while enabling easy maintenance and adaptation to different surface sizes.
4Reliability
If crushed rock is used in paver joints for drainage, then water permeability is improved, but debris accumulation occurs over time
Solution Approach 1:
The patent applies preliminary cleaning action to prevent debris accumulation before it can form impermeable crust. By regularly removing fine debris and organic material from joints, the system maintains the original drainage functionality of crushed rock joints, preventing the harmful effect of crust formation that would block water flow.
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 system efficiently removes debris from paver joints without water, maintaining drainage functionality and reducing hazardous waste generation, enabling effective cleaning of large areas with reduced labor and disposal costs.
Implementation Method 1
The nozzles are configured to receive a pressurized flow of air and to direct the flow of air toward the pavement surface to dislodge debris from the pavement surface
Implementation Method 2
providing a flow of compressed air to the plurality of nozzles and the air flow from the nozzles is sufficient to dislodge the debris from the joints
Implementation Method 3
The debris removal device also has a handle extending from the wheeled housing and configured to allow an operator to manually move the wheeled housing over the pavement surface. The system also has a debris removal device that is a wheeled housing with at least one pair of pavement surface engaging wheels and the housing supports a suction head having an inlet end and an outlet end and connectable with a vacuum source at the outlet end to remove dislodged debris from the pavement surface through the inlet end
Data Source
AI summary
A cleaning system for pavement joints controlled and driven by a motor. A wheeled housing carries a nozzle system where a stream of pressurized or forced air is directed through rotating nozzles to clean the joint surfaces. The rotational speed (RPM) of the motor is selectively controlled by actuation of a valve by the operator, and allows the operator to selectively control the rate of rotation of the nozzles are required by the state of the surface to be cleaned. A suction head is further movable over the joint surfaces to remove the debris dislodged by the nozzle system and airflow.