CN2477812Y

CN2477812Y - Jet-flow coring appts.

Info

Publication number: CN2477812Y
Application number: CN 01218735
Authority: CN
Inventors: 黄卫东; 黄玉文; 刘维鹏; 赵尔信
Original assignee: QINGHAI NUCLEAR INDUSTRIAL GEOLOGICAL BUREAU
Current assignee: QINGHAI NUCLEAR INDUSTRIAL GEOLOGICAL BUREAU
Priority date: 2001-04-03
Filing date: 2001-04-03
Publication date: 2002-02-20
Anticipated expiration: 2011-04-03

Abstract

The utility model provides a fluidic cutting sampler used for a cementing loose rock ore bed. The cutting sampler comprises a water separation joint, an internal pipe joint, an external pipe, an internal pipe, a drill bit, a long shaft, a bearing chock and a spring holder. The water separating joint is internally provided with a fluidic element, a water separation hole, a nozzle, a diffusion chamber and a lateral through hole; the long shaft is equipped with a sealing ring and a steel ball to divide the return water part into a return water cavity and a return water channel; and a water-resisting device is arranged in the B area of the drill bit. The utility model resolves the problems of a current cutting sampler that the rock ore core is blocked in the internal pipe, and produces autonomous abrasion, and the root part is easily corroded by the flushing liquid, ensures the quality of the cementing loose rock ore core, and increases the rock ore core sampling rate to 95% from 30%.

Description

The jetting type corer

The utility model relates to a kind of geological drilling tools, particularly relates to a kind of jetting type corer that is used for glued loose rock ore bed.

Present existing boring corer is that gold conjugate diamond bit or alloy bit carry out core drilling, because the rock core root is rinsed the liquid erosion, rock core is autogenous grinding mutually in interior pipe, when running into glued loose rock ore bed when creeping into, core recovery percentage is low, is difficult to keep the prototype structure of rock ore bed; 91219239 publications, its shortcoming are, 1, be difficult to guarantee that the part water yield enters interior pipe when loose when interior pipe rock core is glued, thus make anti-cycle interruption.2, lack the water proof device, flushing liquor erosion rock core root.

The purpose of this utility model provides a kind of in the loose rock ore bed of gluing during core drilling, and it can effectively overcome existing corer rock core root and easily be rinsed the liquid erosion, and rock core stops up problems such as mutual autogenous grinding in interior pipe; Can guarantee that core recovery percentage can keep the jetting type corer of the prototype structure of rock core again.

Technical solution of the present utility model is: comprise return connector 1, alloy block 3, inner pipe joint 25, outer tube 13, interior pipe 27, drill bit 15, major axis 21, bearing support 11, clip spring seat 16, it also is included in fluidic 6 in the return connector 1, tapping hole 2, nozzle 4, diffuser casing 5, side through hole 7, on major axis 21 external diameter shiny surfaces, sealing ring 22 is set, be provided with countercheck rod 19 in major axis 21 inside, steel ball 20, backwater partly is divided into backwater cavity 18 and backwater channel 26 two parts, and upper bearing (metal) 10 is housed is connected with the major axis male thread with lower bearing 12 usefulness nuts 8, major axis 21 lower end male threads are connected with inner pipe joint 25 box threads, interior pipe 27 male threads are connected with clip spring seat 16 box threads, jump ring 17 is slidingly matched with clip spring seat 16 taperings, with being threaded, bearing support 11 male threads are connected with the box thread of return connector 1 between adjusting nut 23 and locking nut 24 and the major axis 21.Insert in the groove of drill bit 15 end 30 of clip spring seat 16, and the distance of bottom gap 31 is 2-6mm, and the erosion that avoids for the protection rock core works the drip ring 29 that stops flushing liquor in the setting of drill bit inner radius.

The diameter of the nozzle 4 in the fluidic 6 is φ 4-φ 9mm, and jet angle is 6-12 °.

Description of drawings:

Fig. 1, be structural representation of the present utility model

Fig. 2, be B district, Fig. 1 drill bit bottom enlarged drawing

Among the figure: 1-return connector, 2-tapping hole, 3-alloy block, 4-nozzle, the 5-diffuser casing, 6-fluidic, 7-side through hole, the 8-top nut, 9-check washer, 10-upper bearing (metal), the 11-bearing support, 12-lower bearing, 13-outer tube, 14-inner and outer pipes annular gap, 15-drill bit, 16-clip spring seat, the 17-jump ring, 18-backwater cavity, 19-countercheck rod, the 20-steel ball, 21-major axis, 22-sealing ring, the 23-adjusting nut, 24-locking nut, 25-inner pipe joint, pipe in the 26-backwater channel, 27-, 28-side water spray eye, the 29-drip ring, 30-clip spring seat end, 31-bottom gap.

Describe the utility model in detail below in conjunction with drawings and Examples: the utility model comprises return connector 1, alloy block 3, inner pipe joint 25, outer tube 13, interior pipe 27, drill bit 15, major axis 21, bearing support 11, clip spring seat 16, it also is included in fluidic 6 in the return connector 1, tapping hole 2, nozzle 4, diffuser casing 5, side through hole 7, sealing ring 22 is set on the shiny surface outside major axis 21, its inside is provided with countercheck rod 19, steel ball 20, backwater partly is divided into backwater cavity 18 and backwater channel 26 two parts, and upper bearing (metal) 10 is housed is connected with the major axis male thread with lower bearing 12 usefulness nuts 8, major axis 21 lower end male threads are connected with inner pipe joint 25 box threads, interior pipe 27 male threads are connected with clip spring seat 16 box threads, jump ring 17 is slidingly matched with clip spring seat 16 taperings, with being threaded, bearing support 11 male threads are connected with the box thread of return connector 1 between adjusting nut 23 and locking nut 24 and the major axis 21.Insert in the groove of drill bit 15 end 30 of clip spring seat 16, and the distance of bottom gap 31 is 2-6mm, and the erosion that avoids for the protection rock core works the drip ring 29 that stops flushing liquor in the setting of drill bit inner radius.

When flushing liquor enters tapping hole 2, high velocity liquid stream is by nozzle 4, inject diffuser casing 5 and enter inner and outer pipes annular gap 14, in diffuser casing 5, form negative pressure, make the liquid in the backwater cavity 18 suck diffuser casing 5 through side through hole 7, penetrate flushing liquor with nozzle 4 and flow into inner and outer pipes annular gap 14 together, finally deliver to the side water spray eye 28 of drill bit 15 bottoms.

The utility model has the advantages that: because fluidic and water barrier device are installed, solved Low and the rock core of glued loose core recovery percentage stops up the problems such as autogenous grinding, guarantees rock core Quality. Through drilling on-the-spot test, core recovery percentage brings up to 95% by 30%.

Claims

1, the jetting type corer, comprise return connector (1), inner pipe joint (25), outer tube (13), interior pipe (27), drill bit (15), major axis (21), bearing support (11), clip spring seat (16), it is characterized in that, also be included in fluidic (6) is arranged in the return connector (1), tapping hole (2), nozzle (4), diffuser casing (5), side through hole (7), on major axis (21) external diameter shiny surface, sealing ring (22) is set, be provided with countercheck rod (19) in major axis (21) inside, steel ball (20), backwater partly is divided into backwater cavity (18) and backwater channel (26) two parts, and upper bearing (metal) (10) is housed is connected with the major axis male thread with nut (8) with lower bearing (12), major axis (21) lower end male thread is connected with inner pipe joint (25) box thread, interior pipe (27) male thread is connected with clip spring seat (16) box thread, jump ring (17) is slidingly matched with clip spring seat (16) tapering, with being threaded, bearing support (11) male thread is connected with the box thread of return connector (1) between adjusting nut (23) and locking nut (24) and the major axis (21).Insert in the groove of drill bit (15) end (30) of clip spring seat (16), and the distance of bottom gap (31) is 2-6mm, works the drip ring (29) that stops flushing liquor in the setting of drill bit inner radius.

2, jetting type corer according to claim 1 is characterized in that, the diameter of the nozzle (4) in the fluidic (6) is φ 4-φ 9mm, and jet angle is 6-12 °.