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A quick plug-in water feeder and its construction method

A water feeder and mandrel technology, which is applied in earth-moving drilling, wellbore/well components, flushing wellbore, etc., can solve the problems of low loading and unloading efficiency, low drilling efficiency, etc., achieve compact size, improve drilling efficiency, The effect of a quick seal connection

Active Publication Date: 2020-11-27
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and deficiencies in the prior art, the present invention provides a quick-insert water feeder and its construction method, which overcomes the defects of low loading and unloading efficiency between the water feeder and the drill pipe, resulting in low drilling efficiency, etc.

Method used

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  • A quick plug-in water feeder and its construction method
  • A quick plug-in water feeder and its construction method
  • A quick plug-in water feeder and its construction method

Examples

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Embodiment 1

[0044] Such as Figures 1 to 3As shown, this embodiment provides a quick-plug water feeder, including a mandrel 1, a bearing 2 and a bearing sleeve 3 arranged coaxially from the inside to the outside in sequence, and a high-pressure water interface is installed on the side wall of the mandrel 1 4; It also includes a force transmission hollow shaft 5 coaxially tightly fitted in the mandrel 1 and capable of moving axially, with one end closed and the other end open; the high-pressure water interface 4 is sealed and connected to the force transmission hollow shaft 5, which is used for the force transmission hollow shaft 5. High-pressure water is passed into the shaft 5; the closed end of the force transmission hollow shaft 5 is flush with one end of the mandrel 1, and a pressure handle 6 and a rolling body 8 located between the pressure handle 6 and the closed end are provided, and the force transmission hollow shaft 5 The open end of the shaft is flush with the other end of the ...

Embodiment 2

[0052] This embodiment also provides a construction method for a quick-plug water feeder, including the following steps:

[0053] Step 1: Press the pressure handle first, the pressure handle rotates around the hinge shaft, the rolling body contacts the closed-end circular platform structure of the force transmission hollow shaft, and under the action of the pressure handle, the power transmission hollow shaft moves axially and pushes the core rod , The annular piston and the jaws both move axially, compressing the second spring and the third spring, and the moving speed of the core rod is greater than the moving speed of the jaws, so that the wedge-shaped outer wall of the piston block is away from the wedge-shaped surface of the claw piece, and the first spring resets , the claw shrinks, and the elastic piece of the claw is inserted into the internal thread of the drill pipe;

[0054] Step 2: Loosen the pressing handle again, under the reset action of the second spring and th...

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Abstract

The invention discloses a quick plug type water feeder and a construction method thereof. The quick plug type water feeder comprises a mandrel, a bearing and a bearing sleeve in coaxially sequential arrangement from inside to outside, and the side wall of the mandrel is provided with a high-pressure water connection port. The water feeder further comprises a force transmission hollow shaft, and the force transmission hollow shaft sleeves the mandrel internally, coaxially and closely and is capable of moving axially. A closed end of the force transmission hollow shaft is provided with a pressure handle and a rolling element, and a coaxial core rod is arranged at an open end of the force transmission hollow shaft. An annular piston, a clamping jaw push-fastening sleeve and a clamping jaw arecoaxial and arranged between the outer wall of the core rod and the inner wall of the bearing sleeve sequentially. The clamping jaw comprises arc clamping jaw plates in peripheral distribution, and inner walls of ends of the clamping jaw plates are jaw plate wedged faces. A piston block is arranged between the jaw plate wedged faces and the outer wall of the mandrel, and the wall face, close to the jaw plate wedged faces, of the piston block is a wedged outer wall. A first spring along the radial direction of the mandrel is arranged between the piston block and the mandrel. Safety and reliability in quick connection between the water feeder and an internal thread of a drill stem can be realized, drilling efficiency is improved, and requirements of rotary drilling and high-pressure sealingare met.

Description

technical field [0001] The invention belongs to the technical field of underground water feeders for coal mines, and in particular relates to a quick-plug type water feeder and a construction method thereof. Background technique [0002] In the process of underground drilling in coal mines, a water feeder is required to deliver high-pressure flushing medium to the inside of the drill pipe to discharge slag or drive a power motor at the bottom of the hole. In the prior art, the water feeder cannot be quickly connected to the drill pipe. In the process of installing the drill pipe, the water feeder needs to be loaded and unloaded frequently, which is usually manually operated by a special person. At present, the threaded connection between the water feeder and the drill pipe basically relies on manual tightening and pipe wrench tightening to ensure a safe and reliable connection. When the water feeder is unscrewed, a greater breakout force is required, and the existing connec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/00E21B4/00
Inventor 田东庄陈彦宇许翠华牟培英董萌萌范运林王传留朱宁王亚波马少明赵飞
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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