Core Drill Extraction Housing for Corner Borehole Positioning
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Solution Overview
Problem
Existing core drilling extraction devices restrict the positioning of boreholes near corners or obstacles due to their circumference being larger than the drill diameter, limiting the flexibility in drilling operations.
Innovation Solution
A radially positioned extraction device with a housing, cover, and wall structure featuring an obtuse angle and inlet openings, connected to a suction device, allowing for efficient removal of drilling water without obstructing the drill bit, and equipped with sealing elements for enhanced water capture and air flow management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the extraction device has a circumference greater than the core drill diameter to effectively enclose and remove drilling water, then the water extraction capability is improved, but the positioning freedom of the core drill is restricted and a minimum distance from obstacles is required
Solution Approach 1:
The extraction device is divided into multiple functional wall regions (first substantially planar wall region, second substantially planar wall region, and third substantially arcuate wall region) that together form the extraction structure. This segmentation allows the device to maintain effective water enclosure while reducing the overall circumference compared to traditional designs, enabling positioning closer to obstacles without sacrificing extraction effectiveness.
2Productivity
If the extraction device is positioned very near the core-drilled borehole to maximize water extraction, then the water removal efficiency is improved, but the device becomes difficult to position and stabilize without additional forces
Solution Approach 1:
The first and second substantially planar wall regions are configured to act as suction surfaces that, when subjected to negative pressure from the suction device, generate holding forces that counterbalance the device's weight. This allows the extraction device to be positioned near the borehole and remain stable without requiring additional support forces, thereby maintaining high water removal efficiency while improving positioning ease.
3Reliability
If the wall structure includes multiple planar regions connected at obtuse angles to facilitate water collection and gravitational flow, then the water extraction effectiveness is improved, but the device complexity increases
Solution Approach 1:
Different wall regions are assigned specific geometric properties optimized for their local functions: the first and second substantially planar wall regions provide stable suction surfaces for holding the device, while the third substantially arcuate wall region facilitates water flow and collection. The obtuse angles between these regions are specifically configured to optimize gravitational water flow toward the extraction opening, thereby improving extraction effectiveness without excessive complexity.
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
Enables flexible positioning of core-drilled boreholes near extremities and obstacles, effectively removing a large proportion of drilling water through optimized air flow and gravitational collection, preventing contamination and improving operational freedom.
Implementation Method 1
the extraction device is sucked against the wall or on the floor by the negative pressure generated in the cavity by the suction device
Implementation Method 2
the extraction device is sucked against the wall or on the floor by the negative pressure generated in the cavity by the suction device
Implementation Method 3
so that gravitational force causes the drilling water to collect in a mutually facing region of the first wall region and the second wall region
Data Source
AI summary
A description is given of an extraction device (1) for a core drill, including a housing (4) which has at least one cavity (7), a cover (2) and a wall (3) connected to the cover (2) around the periphery. An extraction nozzle (5) connected to the housing (4) is provided, designed for attaching the extraction device (1) to a suction device. The wall (3) has at least one inlet opening (44, 45), by way of which the cavity (7) is connected to the surroundings (U). The wall (3) has a first substantially planar wall region (10) and a second substantially planar wall region (11), wherein a surface (14) of the first wall region (10) that is facing away from the cavity (7) forms an obtuse angle (16) with a surface (15) of the second wall region (11) that is facing away from the cavity (7).