Radial Pump Device for Rotary Drilling Tool Flushing
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Solution Overview
Problem
Efficient and targeted conveying of flushing liquid in rotary drilling tools with cylindrical base bodies is problematic due to limited installation space, which affects the drilling efficiency and stability of boreholes, especially at greater depths.
Innovation Solution
A rotary drilling tool with a pump device arranged radially along the end plate, allowing for efficient flow of flushing liquid through a worm pump design that extends radially, enabling space-saving installation and effective flushing without additional flow-generating devices, and supporting the cutting device with inner and outer conveying helices for enhanced liquid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a pump device is arranged in the region of the through-opening extending radially along the end plate, then the conveying of flushing liquid is improved, but the installation space is limited
Solution Approach 1:
The pump device is arranged radially along the end plate instead of axially within the base body, utilizing the radial dimension to achieve efficient flushing liquid conveyance without occupying excessive installation space within the cylindrical base body structure
Solution Approach 2:
The end plate serves multiple functions: it closes the through-opening, provides mounting surface for the pump device, and acts as part of the structural framework, thereby maximizing space utilization without compromising conveying efficiency
2Device complexity
If flushing liquid is supplied inside the base body without additional flow-generating devices, then the device complexity is reduced, but the flow efficiency is insufficient
Solution Approach 1:
The rotary drilling tool itself serves as the flow-generating device through its rotation, eliminating the need for separate flow-generating mechanisms while maintaining efficient flushing liquid supply to the cutting device
Solution Approach 2:
The rotating base body performs dual functions: mechanical cutting of soil material and generation of flushing liquid flow through its rotation, thereby reducing overall device complexity while maintaining productivity
3Volume of moving object
If the pump device is arranged on the end plate, then the space usage is optimized, but the rotational speed synchronization becomes complex
Solution Approach 1:
The pump device is integrated with the end plate as a single rotating assembly, ensuring automatic rotational speed synchronization without requiring additional gear mechanisms or control systems
Solution Approach 2:
The end plate with integrated pump device serves as both a structural closure and a flow-generating component that rotates at the same speed as the base body, eliminating the need for separate rotational speed control mechanisms
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 enhances the absorption capacity of worked-off soil material and maintains efficient drilling operations with minimal space usage, allowing for stable and economical borehole creation in various soil materials and depths.
Implementation Method 1
a pump device is arranged in the region of the at least one through-opening, through which a flow of flushing liquid can be generated through the at least one through-opening and which extends radially along the end plate
Implementation Method 2
A rotary drilling tool with a pump device arranged radially along the end plate, allowing for efficient flow of flushing liquid through a worm pump design that extends radially
Implementation Method 3
supporting the cutting device with inner and outer conveying helices for enhanced liquid flow
Data Source
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AI summary
The invention relates to a rotary drilling tool, a drilling rig, and a method for creating a borehole in the ground, wherein the rotary drilling tool comprises a tubular base body, a cutting device arranged on its underside for processing soil material, and a receiving chamber inside the base body for receiving soil material. A cover plate is arranged on the top of the base body, which has at least one through-opening. A pump device is arranged in the region of the at least one through-opening, which generates a flow of drilling fluid through the at least one through-opening, the pump device extending radially along the cover plate of the base body.