Worktable Suction Nozzle Layout for Low-Power Dust Capture
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Solution Overview
Problem
Existing stone processing devices, particularly dry saws, face challenges in effectively containing dust and particulate material generated during processing, which can contaminate the environment and pose health hazards, and conventional suction systems require significant power to achieve adequate dust removal.
Innovation Solution
The device incorporates a work table with a working slot and a suction nozzle that protrudes into the slot, allowing the processing tool to immerse and pass through the suction opening, enabling efficient dust capture with lower suction power, using a conventional mobile industrial vacuum cleaner, and includes a suction system with a suction box and cyclone separators for effective material collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a suction device is used to remove dust and particulate material during dry processing, then dust-free conditions can be achieved, but considerable suction power is required
Solution Approach 1:
The suction opening is segmented into multiple zones (first suction zone with higher velocity, second suction zone with lower velocity) along the working direction, allowing differential capture of dust particles at different stages of their trajectory, thereby improving extraction efficiency at lower overall suction power
Solution Approach 2:
Different regions of the suction opening have different suction characteristics - the region facing the processing tool has higher suction velocity for capturing dust at the source, while downstream regions have lower velocity for capturing dispersed particles, optimizing local dust capture conditions throughout the slot
2Object-affected harmful factors
If conventional suction systems are used for dust extraction, then dust removal can be achieved, but the systems require significant power consumption
Solution Approach 1:
The suction opening is positioned to intercept dust particles before they can disperse widely into the environment, capturing them at the source near the processing tool where concentration is highest, thereby reducing the power needed for subsequent dust collection
3Object-affected harmful factors
If the suction nozzle is positioned to effectively capture dust, then dust-free conditions improve, but the complexity of the suction system increases
Solution Approach 1:
The suction nozzle serves multiple functions simultaneously: it defines the working slot geometry, positions the processing tool, creates the suction opening, and generates the suction flow pattern, thereby achieving effective dust containment without requiring additional complex components
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 arrangement allows for reliable prevention of dust and particulate material from entering the environment, using relatively low suction power and conventional vacuum cleaners, while ensuring efficient collection and containment of materials, reducing environmental contamination and health risks.
Implementation Method 1
a suction device (40) for dust and/or particulate material generated during processing
Implementation Method 2
suction system with a suction box and cyclone separators for effective material collection
Data Source
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AI summary
The invention relates to an electric machining device for machining workpieces, comprising a worktable (11) providing a support for a respective workpiece during machining, a working unit (15) comprising a machining tool (13), in particular a saw blade (13) or a cutting disc (13), and an extraction device for dust and/or particle material generated during machining, wherein the worktable (11) has a working slot (17) extending in a working direction into which the machining tool (13) is inserted from above during machining, wherein the extraction device comprises a suction nozzle (19) which projects from below into the working slot (17) and has a suction opening (21) elongated in the working direction and pointing upwards, and wherein the suction nozzle (19) projects so far into the working slot (17)that during machining, the machining tool (13) immersed in the working slot (17) protrudes through the suction opening (21) into the suction nozzle (19).