GROUND PROCESSING TOOL AND A METHOD FOR CREATING A BOREHOLE IN THE GROUND

• US 20180230748A1
• Filed: 01/31/2018
• Published: 08/16/2018
• Est. Priority Date: 02/13/2017
• Status: Active Grant

• Current Assignee: Bauer Maschinen GmbH (Bayer AG)
• Original Assignee: Bauer Maschinen GmbH (Bayer AG)
• Inventors: FINKENZELLER, Stefan Michael, KLIPPENSTEIN, Juergen, SCHWEIGER, Manfred, BAUER, Thomas
• Granted Patent: US 10,458,184 B2
• Time in Patent Office: Days
• CPC Class Codes: E21B 10/44 Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts E21B10/42 takes precedence
• CPC Class Codes: E21B 10/60 characterised by conduits or nozzles for drilling fluids for roller bits E21B10/18; for percussion drill bits E21B10/38
• CPC Class Codes: E21B 21/00 Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor freeing objects stuck in boreholes by flushing E21B31/03
• CPC Class Codes: E21B 7/00 Special methods or apparatus for drilling

Abstract

The invention relates to a ground processing tool and a method for creating a borehole in the ground, wherein ground material is removed by the ground processing tool and blended with a fluid in the created borehole to form a suspension, which is suctioned away via at least one opening in the at least one mixing blade and via the conducting channel in the central shaft.

Claims

1. A ground processing tool, in particular a drilling tool, having a central shaft, built into which is a conducting channel, and having at least one mixing blade, which is attached to the central shaft and almost extends radially outward,

wherein

the at least one mixing blade is constructed to have an inner cavity,

the cavity communicates with the conducting channel in the central shaft, and

the outside of the mixing blade is constructed to have at least one opening to the cavity.

2. The ground processing tool according to claim 1,

wherein

a ring-like circumferential wall is mounted on the central shaft and encircles, ring-like, a mixing area, in which the at least one mixing blade is arranged.

3. The ground processing tool according to claim 2,

wherein

the circumferential wall features an upper deck area, whereby a hood-like mixing bell is formed.

4. The ground processing tool according to claim 2

wherein

the ring-like circumferential wall is mounted so as to be rotatable with respect to the central shaft.

5. The ground processing tool according to claim 1,

wherein

multiple mixing blades are arranged on the central shaft.

6. The ground processing tool according to claim 2,

characterized in that

at least one mixing element is attached to an inner side of the ring-like circumferential wall.

7. The ground processing tool according to claim 1,

wherein

a connecting apparatus for a joint connection with a suction apparatus is provided in the upper area of the central shaft.

8. The ground processing tool according to claim 2,

wherein

at the ring-like circumferential wall strut-shaped mixing elements are arranged.

9. The ground processing tool according to claim 1,

wherein

a removal apparatus is arranged on a lower side for removing ground material.

10. The ground processing tool according to claim 9,

wherein

conveying means used to convey the removed ground material is arranged between the removal means and the at least one mixing blade.

11. A drilling device for earth and rock drilling,

wherein

a ground processing tool according to claim 1 is provided.

12. The drilling device according to claim 11,

wherein

a suction means is provided, using which removed ground material can be suctioned away through the conducting channel in the central shaft via the at least one opening in the mixing blade.

13. A method for creating a borehole in the ground using a ground processing tool according to claim 1,

wherein ground material is removed by the ground processing tool and blended with a fluid in the created borehole to form a suspension, which is suctioned away via at least one opening in the at least one mixing blade and via the conducting channel in the central shaft.

14. The method according to claim 13,

wherein

the suspension is discharged from the borehole.