Reverse-circulation slag-removal reamer bit

A technology of reaming drill bit and reverse circulation, which is applied to drill bits, drilling equipment, earthwork drilling, etc., can solve the problems of a large amount of bentonite and high cost, and achieve the effect of cleaning slag, protecting the environment and saving costs.

Inactive Publication Date: 2012-12-19
杨国发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only does not pollute the environment, but also requires a large amount of bentonite, which is expensive

Method used

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Embodiment Construction

[0012] As shown in the drawings, the present invention includes a reaming device and a jet slag suction device. The reaming device includes a drill body 4, a cutting device 5 and a guide device 8. The cutting device 5 and the guide device 8 are fixed on the drill body 4; The jet slag suction device has a jet tube 2, the right end of the jet tube 2 is fixed with the inner nozzle 7, the left end of the jet tube 2 has a throat cavity 3 and a diffusion cavity 11, and the middle part of the jet tube 2 is fixed with a slag suction tube 6 and a slag suction tube 6 One end communicates with the jet pipe 2, and the other end is close to the cutting device 5; the left and right ends of the jet pipe 2 are respectively sealed and fixed to the slag conveying pipe or the rear drill pipe 1 and the front drill pipe 10.

[0013] The outer fixed annular nozzle 12 of described jet pipe 2 has oblique nozzle hole 13 and guide pipe 15 in the annular nozzle 12, and oblique nozzle hole 13 and guide pi...

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Abstract

The invention relates to a reverse-circulation slag-removal reamer bit which comprises a reaming device and a jet slag sucking device. The reaming device comprises a bit body, a cutting device and a guiding device, and the cutting device and the guiding device are fixed on the bit body; a jet pipe is arranged in the jet slag sucking device, an inner nozzle is fixed to the right end of the inside of the jet pipe, a throat cavity and a diffusion cavity are arranged at the left end of the inside of the jet pipe, a slag sucking pipe is fixed to the middle of the jet pipe, one end of the slag sucking pipe is communicated with the jet pipe, and the other end of the slag sucking pipe is close to the cutting device; and slag delivery pipes or a rear drill stem and a front drill stem are respectively hermetically fixed to the left end and the right end of the jet pipe. The reverse-circulation slag-removal reamer bit is simple in structure, convenient to use, free of environmental pollution and low in cost. Besides, when the reveres-circulation slag-removal reamer bit is used for construction on rock stratums, slag can be removed by clear water without mud.

Description

technical field [0001] The invention relates to a non-excavation reaming drill bit. Background technique [0002] With the development of production and science and technology, especially in the construction of water wells, pile foundations, diaphragm walls, and coal mine shafts, positive circulation is used to discharge cuttings, that is, water or mud is sprayed into the drill pipe to make the drilled cuttings discharge along the drill hole. . This not only does not pollute the environment, but also requires a large amount of bentonite, which is expensive. Contents of the invention [0003] In order to overcome the shortcomings of the prior art, the present invention provides a reverse circulation slag clearing and reaming drill bit, which is simple in structure, easy to use, does not pollute the environment, and has low use cost. [0004] The technical scheme adopted by the present invention to solve its technical problems is: it includes a reaming device and a jet sla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/32E21B10/61
Inventor 杨国发
Owner 杨国发
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