CN2142881Y - Drilling tool of double tube and motion cord with advanced inner tube - Google Patents

Abstract

The utility model discloses a drilling tool of double tube and motion cord with advanced inner tube, which belongs to a sampling drilling tool for geological exploration. The drill bit part of the drilling tool is designed into the inclined spraying of stepped water opening, a spearhead is designed into a hinge structure, and an inner tube is designed into a plurality of short core tubes. The junction of the inner tube is provided with a one-way valve for controlling the back flow of water, the inner tube part is simultaneously designed into a piston group, and the inner tube forms a vacuum. The inner tube can absorb an original sample, avoiding a rock sample to fall off.

Description

Drilling tool of double tube and motion cord with advanced inner tube

The utility model belongs to the used for geological prospecting Sampling driller.

China Ministry of Metallurgical Industry designed its drill bit of YS75 cord coring drill in three rivers is a plain base, and promptly the drill bit bottom is the plane, and the mouth of a river is at the place, plane of drill bit bottom, and water can directly be sprayed onto on the rock, and spearhead is vertically upward, easily comes off when putting drilling tool.2-4 drain hole arranged on the inner pipe joint, and water can be discharged from inner and outer pipes in the time of in working order.When the pressure of inner and outer pipes will not produce the refluence phenomenon of water simultaneously, make rock sample scratch even can run off.Do not have piston apparatus in the pipe in addition, sample comes off easily in sampling process.Pipe is an integral body in it, and sample is poured out the comparison difficulty.

The purpose of this utility model is bit part to be designed to the stepped mouth of a river tiltedly spray, spearhead is designed to the hinge structure, interior pipe is designed to some short baskets, the refluence of one way valve control water is housed at the inner pipe joint place, interior tube portion designed simultaneously the piston group make in pipe form vacuum, can adsorb former state.

Structure accompanying drawings of the present utility model is as follows.

Fig. 1, Fig. 2 ask for the leading drilling tool schematic diagram of pipe in the sample for two-tube pair of running rope.

This drilling tool is divided into inner tube assembly, outer pipe assembly, salvages assembly three parts composition.

Inner tube assembly: (1) spearhead; (4) play card; (5) receive the card tube; (6) suspension arrangement; (9) nut; (10) screw rod; (11) inner pipe joint; (12) ball valve; (13) ball valve seat; (14) lack basket; (15) piston component; (18) interior pipe bit.

Outer pipe assembly: (2) bullet card shelves head; (3) Zhang Kaquan outer tube; (8) outer tube; (17) outer pipe bit; (7) between the shelves between outer tube and the interior pipe; (16) guider ring.

Salvage assembly: φ 91mm drilling rod internal diameter, 30 ° of every two chamfers are selected S75 rope salvaging device assembly for use.

The utility model shown in (17) outer tube bit part among Fig. 1, is staged to the design of drill bit, the water spray of coming out to retread.Fig. 3 is the spearhead structural representation.(1-1) connects the mushroom head for spearhead upper boom top among the figure, and the bottom car of upper boom has the bluff body of one section projection; (1-3) be lower beam, lower beam the higher authorities are milled with one section Baltimore groove.In the Baltimore groove of the bluff body insertion lower beam of upper boom projection, middle lower beam is fused can move up and down with little axle (1-2) connection, and upper boom can be the center with little axle, puts 45 along the groove direction in groove.The lower end of lower beam is a disk, and a compression spring (1-4) is housed above the disk, and spring external diameter and receipts card pipe (1-5) internal diameter are complementary, and spring is free state inside.

Locate to have designed ball valve (12) at inner pipe joint (11), ball valve seat (13), short basket (14) and piston component (15).Ball valve seat (13) and interior effective screw thread cooperation, the design of inner pipe joint upper end have a semicircular hole, ball valve to be contained in also can be free movable in the hole.When the water in the interior pipe was washed ball valve open and discharged, the flushing liquor between inner and outer pipes advanced less than in the interior pipe, thereby sample can not be rinsed and is protected.Rubber piston group (15) is housed in the interior pipe, and the bottom of pipe in the piston group is placed on when managing in is down moved on along with entering of rock sample, and rock sample is produced a suction force, avoids rock sample to come off.Interior pipe is formed by connecting by some short baskets (14), and with screwed connection, the sample in the interior pipe can not misplace between short basket.When inner tube assembly is mentioned the face of land, interior pipe is unloaded into cutting back, each cuts with wooden stick rock sample is ejected in managing, by the last the next and sequencing sample sack of packing into.

Claims (5)

1, a kind of two-tube pair of running rope asked for the leading drilling tool of pipe in the sample, form by inner tube assembly, outer pipe assembly and salvaging assembly three parts, of the present utility model being characterised in that, the spearhead of inner tube assembly part is the hinge structure, design has ball valve and ball valve seat at the inner pipe joint place, interior pipe is short basket, and piston component is arranged, and the outer pipe bit of outer tube assembly part is an inclined jet.

2, drilling tool as claimed in claim 1 is characterized in that the spearhead upper boom is that mushroom eats head shapes, and upper boom bottom car has the bluff body of one section projection, and lower beam the higher authorities have one section Baltimore groove, and the bluff body of upper boom projection inserts in the Baltimore groove of lower beam, and is middle with little axle connection.

3, drilling tool as claimed in claim 1 or 2 is characterized in that described spearhead lower beam lower end is a disk, and a compression spring is housed on the disk, and spring external diameter and receipts card bore are complementary, and spring is free state inside.

4, drilling tool as claimed in claim 1 is characterized in that described ball valve seat and interior effective screw thread cooperate.

5, drilling tool as claimed in claim 1, it is characterized in that described in pipe forms by some short baskets, lack between basket with screwed connection.

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