Vacuum device for collecting light and heavy material
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Solution Overview
Problem
Existing vacuum devices cannot effectively collect both light and heavy materials in a common collecting space without compromising the separation of heavy materials, which can damage the blower wheel or obstruct its functionality.
Innovation Solution
The vacuum device is designed with a blower inlet opening positioned between the intake and discharge openings of the intake pipe, allowing for the separation of materials based on their flow paths, where heavy materials are accelerated to bypass the blower wheel and light materials are chopped and discharged through the pressure channel, enabling collection in separate or common spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heavy material is collected in a common collecting space with light material, then collection efficiency is improved, but the blower wheel may be damaged or obstructed by heavy material
Solution Approach 1:
The intake pipe is segmented into multiple sections with different functions: a first section with an intake opening for suction, a second section with a discharge opening for heavy material, and a third section with a blow-out opening for light material. This segmentation allows heavy and light materials to be discharged through different paths, preventing heavy material from reaching the blower wheel while maintaining collection efficiency
Solution Approach 2:
The discharge opening for heavy material is extracted from the common collecting space path and positioned in the intake pipe before the blower wheel. This extraction allows heavy material to be removed from the system before it can enter the blower wheel, protecting the blower while still allowing light material to be collected in the common space
2Manufacturing precision
If heavy material is separated from light material using a blower wheel, then separation efficiency is improved, but the device complexity increases
Solution Approach 1:
The separation mechanism utilizes the longitudinal dimension of the intake pipe by positioning the blower inlet opening between the intake opening and the discharge opening for heavy material. This spatial arrangement in the longitudinal direction creates natural separation paths for different materials based on their trajectories, achieving separation without complex mechanical structures
Solution Approach 2:
The intake pipe acts as an intermediary structure that guides and separates materials based on their physical properties. By positioning openings at different locations along the pipe, the system uses the pipe itself as a mediator to direct heavy material to the discharge opening and light material to the blow-out opening, simplifying the overall separation mechanism
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 configuration allows for the simultaneous collection of light and heavy materials in a common or separate space, protecting the blower wheel and enhancing separation efficiency, while maintaining the functionality of the vacuum device.
Implementation Method 1
the heavy collected material is sufficiently accelerated to a fast enough speed in order to pass the blower inlet opening and not be sucked in
Data Source
AI summary
A vacuum device has a motor-driven blower wheel with suction side and with pressure side with pressure channel and blow-out opening. An intake pipe at the suction side has an intake opening and a discharge opening at opposed ends. The intake pipe conveys a suction airflow entraining first and second collected materials. Through the discharge opening the first collected material is discharged from the intake pipe. A blower inlet opening is formed in a wall of the intake pipe. Blower inlet opening, blower wheel, and pressure channel are configured such that second collected material passes through blower inlet opening and blower wheel into the pressure channel for discharge through blow-out opening. The blower inlet opening, in longitudinal direction of the intake pipe, is positioned between discharge opening and intake opening at a first spacing to the intake opening and at a second spacing to the discharge opening.