CN87205294U

CN87205294U - Sampling driller with back sticky wall valve

Info

Publication number: CN87205294U
Application number: CN 87205294
Authority: CN
Inventors: 张可庚; 郑石仁; 葛松亭
Original assignee: GANXIBEI BRIGADE GGOLOGICAL MINERAL BUREAU JIANGXI PROV
Current assignee: GANXIBEI BRIGADE GGOLOGICAL MINERAL BUREAU JIANGXI PROV
Priority date: 1987-11-23
Filing date: 1987-11-23
Publication date: 1988-09-14

Abstract

The utility model relates to a sampling driller with back sticky wall valve used for boring sample, comprising a back sticky wall valve, a drill bit, a core barrel, a joint, etc. The utility model has the back sticky wall valve, and the feature of the shape of the back sticky wall valve makes the back sticky wall valve adhere to the inner wall of the valve body after opening. The big opening of the back sticky wall valve and nonresistance when the core goes into the core barrel can keep core original structure. After drilling, the valve can close the lower end of the core barrel, core desquamation can be avoided, core recovery is enhanced, and the sampling driller with back sticky wall valve is especially suitable for placer sampling and engineering geological investigation.

Description

Sampling driller with back sticky wall valve

The utility model is a kind of core drilling Sampling driller.

The core drilling technology has adopted air, hydraulic reverse-circulation continuous sampling method both at home and abroad.No matter the drilling tool of taking a sample in existing the core drilling Sampling driller, particularly scall, as take out the sand tube is flat valve (single-lobe valve, bivalve valve) or ball-valve type, because the valve opening degree restriction, all can not take out the sample (or claim rock core, down with) of original state structure.Take out the sand tube when work, sample rolls up and down in tube, and heavy mineral is sunken at the bottom of the hole, the serious distortion of sample.Swinging two-tube (single action or two moving) Sampling driller when sample is filled, when interior pipe is lifted from the bottom of the hole, does not have the device at the bottom of a kind of sample that can stop loose condition (of surface) is fallen into the hole in manage.Above-mentioned Sampling driller all can not guarantee the quality and quantity in scall, broken formation sampling, particularly unsolved problem in the layer of sand sampling is drilled especially.

The purpose of this utility model is when creeping into end, a kind of can seal core the pipe lower end, the drilling tool of avoiding sample to come off makes the sample of the taking-up structure that can maintain the original state preferably, can prevent to produce the phenomenon at the bottom of heavy mineral sinking, displacement, the retention hole preferably.Thereby improve the quality of taking out sample, under the prerequisite that guarantees sample quality, can solve clay, lam, sandy loam, loose sand; Contain and enrich phreatic water burst, gush layer of sand; Creep in the sandy gravel stratum of gravel footpath less than the bore of coring, can also adapt to sample drilling in fragmentation or the scall, adapt to placer probing and engineering geologic investigation in the Quaternary system stratum.

Adherent valve is the key problem in technology of this drilling tool, task of the present utility model mainly is to be finished by the wall-attaching type valve: when the drilling tool that the wall-attaching type valve is equipped with in the bottom creeps in the down-hole, rock sample is entered by drill bit (pipe shoe) bottom outlet, back down the valve (seeing the valve of figure four, figure five and figure six, figure seven) of sample valve, valve is backed down the back around hinge axis 7-2(7A-2 by rock sample) half-twist is close to valve interior wall.Creep into when finishing, rock sample is filled basket (or the pipe that narrows), in the time of at the bottom of drilling tool is lifted from the hole, is subjected to reed 7-7(7A-4) impel valve cut-out rock sample and close perpendicular to the reaction force of valve interior wall.

Valve can be adherent by its shape decision.Figure four, figure five are compound hinges formula sample valves, and the end of valve plate 7-4 has hinge 7-3, axle 7-2 with valve plate 7-4, be fixed on hinge seat 7-1 on the valve interior wall and wear and be unified into a secondary hinge.Valve plate 7-4 both sides are unified into the combined type valve by hinge 7-5,7-10 and valve plate 7-11,7-12.When valve during by rock sample jack-up, the constraint that valve plate 7-11,7-12 are subjected to valve body 7-9 inwall is turned round along the axle of hinge 7-5,7-10, when valve plate 7-4 reclines valve interior wall, valve plate 7-11, the 7-12 inwall that also reclines in valve plate 7-4 both sides, three valve plates have been formed the some of inpolygon.Open the shape expansion that the adherent valve in back is an inpolygon from the combined type sample valve, optimal adherent valve is circular arc (being inner wall shape), so produce curved hinge formula valve, sees figure six, figure seven.Valve can be adherent, and rock sample enters the basket non-resistance, the structure that can maintain the original state again, creep into end after, valve is at limited block 7-8(7A-7) cooperation under, sealing cores manages the lower end, has avoided sample to come off.

The utility model and drilling tool of the prior art relatively have following characteristics:

1. two-tube no sample valve of the prior art, the utility model adopt opens back wall-attaching type valve.

2. drilling tool of the prior art is as taking out sand tube etc., and the open degree of its valve is little, and maximum is no more than 45 °, and it is adherent that the utility model compound hinges formula and camber hinge type valve can both be opened the back.

3. the characteristics of motion of valve-type drilling tool in creeping into of prior art generally is that valve plate is closed when drilling tool rises, open during the whereabouts, two kinds of hinge type valve drilling tools that the utility model proposed, in creeping into, impact rotating only moves downward, valve is in out the adherent state in back when creeping into, and valve is in closed condition when extracting rock core.

Description of drawings:

Figure one is the assembling drawing of percussion drilling with the Sampling driller that has out the adherent valve in back.

Figure two is the single action head member figure of rotary drilling with the Sampling driller that has out the adherent valve in back.

Figure three is the sectional view at figure one A-A place.

Figure four and figure five are a kind of forms of figure one valve 7, i.e. compound hinges formula sample valve elevation and bottom view, and wherein 7-1 is a hinge seat, the 7-2 hinge axis, 7-3 hinge, 7-4 valve plate, the 7-5 hinge, the 7-6 rivet, 7-7 reed, 7-8 limited block, the 7-9 valve body, the 7-10 hinge, 7-11 valve plate, 7-12 valve plate.

Figure six and figure seven are another kind of forms of figure one valve 7, i.e. camber hinge type valve, and 7A-1 is a hinge seat, 7A-2 hinge axis, 7A-3 hinge, 7A-4 reed, 7A-5 rivet, 7A-6 camber valve plate, 7A-7 limited block, 7A-8 valve body.

Embodiment 1:

A kind of percussion drilling Sampling driller of opening the adherent valve in back, figure one is its assembling drawing, it mainly is made up of outer pipe assembly and inner tube assembly.Outer pipe assembly comprises beats cap 1, separator tube 3, outer tube 16, pipe shoe 8.Inner tube assembly comprises guiding pipe and drilling rod 4, the interior union 6 that narrows of beating cap 2, drilling rod tieing 17, being with non-return valve 5, narrows and manage 18,19, interior pipe sample valve 7.When this cover drilling tool crept into, external impacts was played cap 1, plays cap external force is passed to inner and outer pipe, be connected the pipe shoe 8 stressed rock stratum of creeping on the outer tube, the valve that rock sample is pushed valve 7 open enters the

pipe

18,19 that narrows, and creeps into end, valve closing takes out inner tube assembly and takes rock sample.

Embodiment 2:

In order to realize that a cover drilling tool has two kinds of different modes of creeping into, on the basis of figure one percussion drilling with the Sampling driller that has out the adherent valve in back, shed the outer cap 1 of beating among the figure one, separator tube 3, the interior cap 2 of beating, change the single action head assembly among the figure two, in drilling process, can obtain outer tube and rotate the effect of interior Guan Buzhuan.The single action head assembly is by single acting connector body 12, and nut 13, two coils thrust bearings 14, axle sleeve 15, and single action axle 9, synchronous and cap 10 is worn pin 11 and is formed.

Claims

1, a kind of Sampling driller that has out the adherent valve in back, it has:

(1) outer pipe assembly, it is:

(1.1) separator tube 3 lower ends and outer tube 16 upper ends connect with screw thread and

(1.2) outer tube 16 lower ends and pipe shoe 8 (or claiming drill bit) upper end connects and the outer pipe assembly of composition with screw thread,

(2) inner tube assembly, it is:

(2.1) beat cap 2 and guiding pipe in and drilling rod 4 upper ends connect with screw thread and

(2.2) guiding pipe and drilling rod 4 lower ends and drilling rod tieing 17 upper ends connect with screw thread and

(2.3) union 6 upper ends that narrow of drilling rod tieing 17 lower ends and band individual event ball valve 5 connect with screw thread and

(2.4) joint 6 lower ends with narrow the pipe 18,19 upper ends connect with screw thread and

(2.5) narrow pipe 18,19 lower ends and interior pipe sample valve 7 upper ends connect and the inner tube assembly of composition with screw thread,

(3) inner tube assembly places in the outer pipe assembly,

(4) annular groove of beating cap 1 lower end places the upper end of separator tube, and makes

(5) guiding pipe and drilling rod 4 place the endoporus of playing cap 1,

It is characterized in that

(A) have one and open back wall-attaching type valve 7, its

(A1) fixed hinge seat 7-1 (7A-1) on the lower end inwall of valve body 7-9 (7A-8),

(A2) the hinge 7-3 (7A-3) on the valve plate 7-4 (7A-6) is combined into a secondary hinge by hinge axis 7-2 (7A-2) and hinge seat 7-1 (7A-1),

(A3) valve plate 7-11 and 7-12 are combined into compound hinges formula valve by hinge 7-5,7-10 and valve plate 7-4,

(A4) limited block 7-8 (7A-7) is fixing on the lower end inwall of valve body 7-9 (7A-8),

(A5) reed 7-7 (7A-4) is fixed on the valve plate 7-4 (7A-6) with rivet 7-6 (7A-5).

2, the Sampling driller that has out the adherent valve in back according to claim 1 is characterized in that out that the adherent valve in back is the compound hinges formula, can be adherent when valve is opened, and can seal core pipe lower end during the pass.

3, the Sampling driller that has out the adherent valve in back according to claim 1 is characterized in that out that the adherent valve in back is the camber hinge type, can be adherent when valve is opened, and during the pass lower end of energy seal core pipe.

4, the Sampling driller that has out the adherent valve in back according to claim 1 is characterized in that out adherent valve plate 7-4,7-11, the 7-12(7A-6 in back) can be around axle 7-2(7A-2 in valve body) 0-90 ° of revolution done.

5, according to claim 1 have out the back adherent valve Sampling driller, it is characterized in that out the back adherent valve hinge 7-1(7A-1) axis hole center and limited block 7-8(7A-7) the upper surface must be on the same horizontal plane of vertical valve body center line.

6, the Sampling driller that has out the adherent valve in back according to claim 1, the valve body 7-9(7A-8 of adherent valve after it is characterized in that out) be to make by steel pipe, the two ends of valve body internal orifice can be processed into the screw thread that connects with basket, drill bit.

7, the Sampling driller that has out the adherent valve in back according to claim 1, the valve body 7-9(7A-8 of adherent valve after it is characterized in that out) be to make by steel pipe, an end of valve body is processed into the screw thread that connects with basket, and the other end is processed into cutting edge.