Hollow Shaft Drill Bit With Feeder Auger for Deep Soil Amendment Injection

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Solution Overview

Problem

Existing technologies lack the ability to efficiently inject soil amendments at targeted depths below the root zone with minimal surface disruption, failing to address the need for enhanced soil health and water retention in agricultural irrigation.

Innovation Solution

A hollow shaft drill bit and hollow insert with perforations or solid feeder augers, equipped with a programmable logic controller (PLC), AI robot, encoder, and limit switches, enable precise and targeted injection of soil amendments at various depths, including below 30 cm, using a second perforated hollow shaft feeder auger that rotates in conjunction with the drill bit to dispense constituents at specific depths.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If surface spreading and mechanical blending down to 30 cm is used for soil amendment application, then soil health and productivity at surface horizons are enhanced, but surface disruption occurs and targeted injection below root zone is not achieved

Engineering Contradiction:

Improvetargeted injection depth capabilityVSAvoidsurface disruption

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent employs a nested structure where a hollow shaft drill bit contains an internal feeder auger system. The feeder auger is positioned within the hollow shaft, allowing amendment materials to be conveyed through the hollow interior and ejected at targeted depths below the surface, thereby achieving deep injection without surface disruption

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The hollow shaft drill bit acts as an intermediary conduit that transports amendment materials from the surface to targeted sub-surface depths. The internal feeder auger serves as a mediator to convey materials through the hollow shaft, enabling precise depth control and avoiding direct surface blending

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If hollow shaft drill bit with internal feeder auger is used for targeted injection, then precise depth control and minimal surface disruption are achieved, but device complexity increases

Engineering Contradiction:

Improveinjection depth precisionVSAvoiddrill bit structure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The hollow shaft drill bit is designed to perform multiple functions: drilling into the soil, conveying amendment materials through its hollow interior, and ejecting materials at targeted depths. The internal feeder auger simultaneously conveys materials and controls ejection timing, reducing the need for separate components

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the drilling function and material injection function into a single integrated tool. The hollow shaft drill bit combines the drill bit structure with the material conveyance system, eliminating the need for separate injection equipment and simplifying overall system complexity

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12471510B2Hollow shaft drill bit and hollow insert with perforations or solid feeder auger(s) and perforated hollow shaft or solid flexible screw feeder auger(s)

Publication Date: 2025.11.18 SUB MERGENT TECHNOLOGIES INC

AI summary

A hollow shaft drill bit (1109) and a solid or hollow shaft auger (409B) or a solid or perforated hollow shaft flexible screw feeder auger (1107) includes a perforated hollow or solid shaft feeder auger (409B) or flexible screw feeder auger hollow with perforations or solid (1107), a hollow shaft drilling auger (1200), a flexible conveyor flight screws (1300), a second perforated hollow shaft feeder auger (603A), a PLC (1405C), an AI robot (1505), a computer (1411C), an encoder (1605B), limit switches (1707), a feeder auger tube conduit (1305A), and a feeder auger motor (905B). The solid or perforated hollow shaft flexible screw feeder auger (1207) is detachably attached to the hollow shaft drilling auger (1200) to receive vibration and torque that are dampened by a coupling or disc coupling (121B or 1213) between a platform and a gearbox interface. The flexible conveyor flight screws (1300) enable functions of the solid or a first perforated hollow shaft feeder auger (1303A) to continue despite receiving torque. The feeder auger tube conduit (1305A) includes a distinct tube (1303C) within a diameter of a feeder auger tube conduit (1305C). The feeder auger motor (905B) upon receiving a signal from the AI robot (1505), the computer (1411C), and the PLC (1405C) enable the ascension of the feeder auger motor (905B) in concert with the encoder (1605B) or limit switches (1707).