Floor Scrubber Wet Dust Capture Without Dry Filter Clogging
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Solution Overview
Problem
Existing floor scrubbers face issues with dry filter saturation and ineffectiveness due to moisture and debris, leading to operational interruptions and reduced reliability when transitioning from wet scrubbing to dry sweeping modes.
Innovation Solution
A combination floor scrubber and sweeper apparatus that directs dust and debris into a solution recovery tank using a squeegee and vacuum system, eliminating the need for a dry filter by using a water spray to adhere dust to fine water particles, which are then confined within the tank, and incorporating flexible skirts to channel dust into the debris hopper and squeegee.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dry filter is used to remove dust from air flow during dry sweeping, then dust removal capability is improved, but the filter becomes saturated and clogged with moisture and wet debris when operating in wet scrubbing mode, leading to reduced reliability
Solution Approach 1:
The patent removes the dry filter from the system entirely, extracting the problematic component that causes reliability issues. Instead of using a dry filter that gets saturated with moisture, the invention uses a wet recovery system where water from the scrubbing solution captures and contains dust particles in the recovery tank, eliminating the need for a separate dry filter component.
Solution Approach 2:
The patent merges the dust removal function with the existing wet recovery system. The vacuum system that normally recycles scrubbing solution is also used to capture dust-laden air, and the water in the recovery tank serves dual purposes: recycling cleaning solution and trapping dust particles. This combines previously separate functions into a unified system.
2Adaptability or versatility
If a dedicated dry sweep system with separate vacuum impeller and dust filter is added to provide dry sweep capability, then dry sweeping effectiveness is improved, but device complexity and servicing requirements increase
Solution Approach 1:
The patent makes the existing vacuum system universal by enabling it to perform both wet scrubbing recovery and dry dust collection functions. The same vacuum impeller and recovery tank handle both liquid solution recycling and dust particle capture, eliminating the need for separate vacuum systems for different operating modes.
Solution Approach 2:
The recovery tank serves multiple functions: it stores recycled scrubbing solution for reuse and simultaneously acts as a dust collection chamber where water captures and contains dust particles. This multi-functional design eliminates the need for separate dust containers and filter systems.
3Productivity
If a dry filter is used in close proximity to the debris hopper, then dust capture is improved, but the filter becomes clogged with wet debris swept into the hopper during wet scrubbing, requiring removal, washing, drying and replacement
Solution Approach 1:
The patent converts the harmful effect of moisture and wet debris into a beneficial dust-capturing mechanism. Instead of allowing moisture to clog a dry filter, the invention uses the moisture in the recovery tank to actively capture and contain dust particles, transforming the problem of wet debris into the solution of effective dust collection.
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
This solution enhances operational reliability and efficiency by preventing dry filter clogging, reducing servicing needs, and allowing seamless mode transitions without adding or removing components, effectively managing both wet and dry debris environments.
Implementation Method 1
a water spray system, wherein the dust adheres to fine water particles which are directed into and confined within a solution recovery tank
Implementation Method 2
an air displacement arrangement for drawing dust-laden air from said rotating scrub brushes past said debris tank and into engagement with said squeegee
Data Source
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AI summary
An industrial floor scrubber includes a solution tank and delivery system for applying the solution to the floor, and one or more rotating brushes for removing dust and debris from the floor and respectively directing same to a squeegee and to a debris hopper. The trailing squeegee removes the remaining solution from the floor and, in combination with a vacuum system, directs the recovered solution to a cleaning solution recovery tank in the scrubbing mode of operation. In a sweeping mode of operation, the use of a dust filter is eliminated as the dust-laden air is directed past the debris hopper and onto the upraised squeegee which confines and directs the dust-laden air into a spray of fine water particles which adhere to and transport the dust-bearing water particles to the recovery tank via an applied vacuum. The heavy dust-bearing water particles drop into the recovery tank, while a demister removes the remaining water vapor with the dry air discharged to the atmosphere via a vacuum impeller.