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An oil-storage single-cone drill bit with two-way combination seal of O-ring metal ring

A combination of sealing and metal ring technology, applied in the direction of drill bits, drilling equipment, earthwork drilling and production, etc., can solve the problems of cone accident, low sealing life, restricting the excellent characteristics of single cone bit technology, etc., to improve stability, Optimize the effect of tooth placement

Active Publication Date: 2016-03-09
陕西金刚石油机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are many defects in single-cone drill bits at present, such as: the existing technology of bearing seal is to use O-shaped rubber ring to seal the bearing, and the seal life is low under high speed conditions; the cone loss accident will occur after the bearing seal fails and is severely worn; Unreasonable design of bearing structure, tooth shape and arrangement of teeth;...
Many of the above-mentioned defects restrict the development of single-cone bit technology and the exertion of excellent characteristics, and affect the market share of single-cone bit

Method used

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  • An oil-storage single-cone drill bit with two-way combination seal of O-ring metal ring
  • An oil-storage single-cone drill bit with two-way combination seal of O-ring metal ring
  • An oil-storage single-cone drill bit with two-way combination seal of O-ring metal ring

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Embodiment Construction

[0027] refer to figure 1 , is an oil-storage single-cone bit with an O-ring metal ring bidirectional combination seal of the present invention, which includes a wheel metal ring (4), a wheel O-ring (5), a small shaft (8), and an oil storage bag ( 7), the small shaft sleeve (11), the main body (1) with connecting thread (22) on the upper part, the large journal (23) protruding obliquely from the bottom of the main body (1), and the sleeve on the large journal (23) The toothed wheel (2), the tooth post arranged on the toothed wheel (2), is set on the large shaft sleeve (6) on the outer wall of the large journal (23); the toothed wheel (2) is provided with a stepped blind hole for installation, and the steps There is an inner wall annular groove near the step in the large hole of the blind hole, and the outer wall annular groove corresponding to the inner wall annular groove is arranged on the top surface of the large journal (23), and the outer wall annular groove and the inner ...

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Abstract

The invention discloses an O-shaped loop and metal ring two-way combined sealed oil storage single-cone bit. By means of the bit, two-way combined sealing of axial sealing of the end face of a cone metal ring (4) and radial sealing of a cone O-shaped loop (5) under the condition of ultra high speed rotation is achieved, a floating sleeve bearing communicated with an oil storage sac (7) is used, and PDC teeth and hard alloy teeth are inserted in a cone (2) and a body (1) directed at action zone differences, so that the comprehensive well bottom rock breakage efficiency is improved, the bit gauge protection effect is enhanced, the bit operation stability is improved, the drilling period is shortened, and the drilling cost is reduced.

Description

technical field [0001] The invention belongs to the roller cone bit technology for rock drilling, in particular to an oil storage single cone bit with an O-ring metal ring bidirectional combined seal. Background technique [0002] In rock drilling technology, the three-cone bit is generally used as the main tool, but the single-cone bit has many characteristics that are superior to the three-cone bit: (1) High-speed drilling at home and abroad uses more screw drilling tools and vortex drilling tools, The drilling speed is 300-600r / min, which belongs to the super high speed, and this is the specific super high speed range of the new product developed by the present invention. Since the rotational speed of the three-cone bit is 1.5 times the rotational speed of the drill bit, at an ultra-high rotational speed, the rotational speed of the cone can reach 450-900r / min, while the rotational speed of the single-cone bit is 75% of the rotational speed of the drill bit, so It is sai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B10/08E21B10/16E21B10/22E21B10/25
Inventor 刘新军孙泰林尚明
Owner 陕西金刚石油机械有限公司
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