Front Squeegee Pre-Cleaning for Single-Pass Floor Scrubbers
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Solution Overview
Problem
Current floor cleaning machines struggle to effectively pick up large amounts of local loose dirt, dust, and hair, which leads to soiling of the brushes or cleaning pads, requiring additional cleaning processes and increasing time and costs to achieve optimal cleaning quality.
Innovation Solution
A floor cleaning machine with a pre-cleaning device featuring a front squeegee with a rear wiping lip that pushes loose dirt into a suction channel, allowing for combined wiping and vacuuming, thereby reducing soiling of the cleaning device and enhancing cleaning quality by ensuring loose dirt is sucked up before the scrubbing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single scrubbing machine is used for wet cleaning, then the machine structure is simple, but loose dirt cannot be effectively removed and the cleaning quality is lower
Solution Approach 1:
The patent combines a pre-cleaning device with suction function and a scrubbing device with suction function into a single integrated floor cleaning machine. The pre-cleaning device includes a front squeegee with rear wiping lip that pushes loose dirt into a suction channel, while the scrubbing device has brushes and an adjacent suction channel. Both devices share a common vacuum generator, merging multiple cleaning functions into one machine to achieve both effective loose dirt removal and thorough scrubbing in a single pass.
2Manufacturing precision
If additional cleaning processes are added to remove loose dirt before scrubbing, then the cleaning quality improves, but the time and costs increase
Solution Approach 1:
The patent merges the pre-cleaning function (removing loose dirt) and the scrubbing function into a single integrated machine that performs both operations simultaneously during one pass. The pre-cleaning device with its suction channel removes loose dirt before the scrubbing brushes contact the floor, eliminating the need for separate pre-cleaning steps while maintaining high cleaning quality and reducing total cleaning time.
Solution Approach 2:
The pre-cleaning device performs preliminary removal of loose dirt, dust, and hair from the floor surface before the scrubbing process begins. The rear wiping lip of the front squeegee pushes loose contaminants into the suction channel, where they are vacuumed up in advance, preventing them from interfering with the subsequent scrubbing operation and ensuring optimal cleaning results.
3Productivity
If the suction channel is positioned to immediately vacuum loose dirt, then the cleaning efficiency is high, but the storage effect for large amounts of local loose soiling is insufficient
Solution Approach 1:
The rear wiping lip of the front squeegee acts as an intermediary mechanism between the loose dirt on the floor and the suction channel. It pushes and accumulates loose dirt into the suction channel, creating a temporary storage zone that handles large amounts of local loose soiling. This intermediary action allows the vacuum to process contaminants at an optimal rate while preventing overwhelming the suction system, thereby maintaining both high cleaning efficiency and adequate dirt accumulation capacity.
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 approach significantly improves cleaning quality by preventing the accumulation of loose dirt on the cleaning device, allowing for better suction of coarse and fine particles, and reducing the need for multiple cleaning processes, thus increasing efficiency and reducing costs.
Implementation Method 1
a suction device (12) with a second tank (13) for the dirty water and a rear suction strip (14) arranged one after the other in the direction of flow, which is arranged behind the scouring device (10) viewed in the forward movement direction A
Implementation Method 2
serves to suck off dirty water
Implementation Method 3
The rear wiping lip pushes the loose dirt in front of it until it is finally sucked off by the vacuum in the suction channel of the front squeegee
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Floor cleaning machine (1) and method for cleaning floors (7), the method comprising the following steps: A) wiping a floor (7) by means of a wiping lip (28, 27) arranged on a floor cleaning machine (1) while simultaneously sucking off dirt in the area of the wiper lip (28, 27); B) scouring of the floor (7) by means of a scouring device (10) arranged on the floor cleaning machine (1) using a cleaning liquid; and C) sucking off the soiled cleaning liquid by means of a suction device (12) arranged on the floor cleaning machine (1), wherein D) steps A) - C) are carried out in one operation in a forward movement direction (A) of the floor cleaning machine (1). The floor cleaning machine (1) comprises a pre-cleaning device (5), which is arranged in front of the scouring device (10) when viewed in the forward movement direction (A) and a front squeegee (20) with a suction channel (29) and at least one rear wiping lip (28) comprises, wherein the rear wiping lip (28) viewed in the forward movement direction (A) is arranged behind the suction channel (29).