Side-Broom Suction Extraction Using Sweeping-Roller Airflow
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vacuum sweeping machines face inefficiencies in reducing dust emissions from side brooms, particularly in dry operations, as current solutions require large structural modifications and increased maintenance due to the need for high volumetric flow rates in suction extraction systems.
Innovation Solution
The solution involves surrounding the side broom with an enclosure connected to the sweeping-roller housing via a connecting line, leveraging the radial airflow generated by the rotating sweeping roller to create negative pressure for dust suction, eliminating the need for a larger-dimensioned suction extraction device and minimizing structural changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If an additional blower and dust separator are installed for side-broom suction extraction, then the volumetric flow rate requirement is met, but structural space, acquisition costs, operating costs, and maintenance work increase
Solution Approach 1:
The patent combines the side-broom suction extraction system with the existing sweeping-roller suction extraction system by connecting the side-broom enclosure to the sweeping-roller housing via a connecting line. This allows the single blower to serve both functions simultaneously, eliminating the need for separate blowers and dust separators while meeting the volumetric flow rate requirements for both systems.
Solution Approach 2:
The existing blower and dust separator are designed to handle dual functions: cleaning dust from both the sweeping roller area and the side-broom enclosure. The suction extraction device becomes a universal system that serves multiple purposes, reducing overall device complexity and component quantity.
2Quantity of substance
If a larger-dimensioned blower is installed to handle both sweeping-roller and side-broom suction, then the volumetric flow rate demand is met, but the fine filter becomes loaded more rapidly, leading to shorter cleaning intervals
Solution Approach 1:
The patent segments the dust-laden air streams from the sweeping roller and side-broom enclosure into separate suction lines that converge at the dust separator. This segmentation allows for more efficient air flow distribution and reduces the burden on the fine filter by preventing excessive loading from a single large-volume stream, thereby extending cleaning intervals.
Solution Approach 2:
The connecting line acts as an intermediary component that channels air from the side-broom enclosure to the existing suction extraction system. This intermediary structure enables efficient integration of the side-broom function without requiring a larger blower, maintaining balanced air flow that prevents rapid filter loading.
3Object-generated harmful factors
If water spray jets are used to reduce dust emissions at the side broom, then dust emissions are reduced, but the surface to be cleaned becomes wet
Solution Approach 1:
The patent replaces the water-based dust suppression system (spray jets) with a mechanical suction extraction system. Instead of using water to suppress dust, the system uses a blower to create negative pressure and extract dust-laden air from the side-broom enclosure through the connecting line to the dust separator, keeping the cleaning surface dry while effectively reducing dust emissions.
4Object-generated harmful factors
If side-broom enclosures are used to reduce dust emissions, then dust containment is improved, but additional structural work and maintenance are required
Solution Approach 1:
The side-broom enclosure is integrated with the existing sweeping-roller housing structure through the connecting line. This merging approach allows the enclosure to be added with minimal structural work, as it connects to the already-present suction extraction system rather than requiring completely separate structural components and support systems.
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 efficiently manages the volumetric flow rate for side broom suction without additional structural work or maintenance, allowing for easy retrofitting and operation without a separate blower, effectively reducing dust emissions and extending cleaning intervals.
Implementation Method 1
In order to operate them effectively, the air has to be sucked out of the enclosure, so that a negative pressure is created inside the enclosure.
Implementation Method 2
the sweeping roller, possibly because of radially extending brush elements, has the effect of a radial fan, i.e. an air flow is generated radially outwards
Data Source
AI summary
A vacuum sweeping machine having a chassis, which is configured for moving the vacuum sweeping machine over a surface to be cleaned, a sweeping roller, a suction extraction device, a side broom and a connecting line. The sweeping roller, which is driven in rotation, is mounted on the chassis and surrounded by the sweeping-roller housing. The sweeping roller extends along its rotational axis between a first and a second side wall of the sweeping-roller housing. The suction extraction device has a suction side that is connected to the sweeping-roller housing for the purpose of suction extraction of dust-laden air. The side broom, which is driven in rotation and mounted on the chassis, is surrounded by an enclosure. The connecting line is provided between the sweeping-roller housing and the enclosure. Coupling of the connecting line to the sweeping-roller housing is provided in one of the side walls.