CN212454262U

CN212454262U - High-strength PDC drill bit

Info

Publication number: CN212454262U
Application number: CN202021077402.9U
Authority: CN
Inventors: 范玉栋; 张文强; 李太光
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-02-02
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses a high strength PDC drill bit relates to the drill bit field. This high strength PDC drill bit, including the main part, the rivers storehouse has been seted up to the inside central line of main part, and a plurality of diffluence holes have been seted up on the surface of main part, and the one end of a plurality of diffluence holes communicates in rivers storehouse. This high strength PDC drill bit, when boring under to hard stratum, the device anticlockwise rotation, the round pin cutter tooth of establishing is broken to the stratum on by outer wing and the interior wing, rivers pass through the rivers storehouse this moment, spout by a plurality of diffluent holes, dash from the device with earth and stone, and cool down to the device, at the in-process that drills down afterwards, it is smashed to remaining the stratum cutting by outer wing and interior wing, the in-process that drills down, when exerting pressure downwards, the device adjusts the pressure that the main part received through the spring, make interior wing and the outer wing adjustment power way of cutting, a plurality of strengthening ribs improve the stress of bearing of interior wing and outer wing simultaneously, avoid the drill bit to damage, the intensity of drill bit has been improved.

Description

High-strength PDC drill bit

Technical Field

The utility model relates to a drill bit technical field specifically is a high strength PDC drill bit.

Background

With the development of times, the progress of society and the improvement of living standard, people have gradually sunk into bottlenecks in the resource development of our earth surfaces, abundant underground resources become objects for people to exploit, a common drilling tool, namely a PDC drill bit, is a short name of a polycrystalline diamond compact drill bit in the geological drilling process, the existing PDC drill bit on the market is cast by metals such as tungsten carbide, copper, nickel and alloy, and the strength is very high, but when the PDC drill bit works on the spot, the PDC drill bit cuts the stone by utilizing the principle of extruding and breaking the rock, when the existing PDC drill bit meets the stone with higher hardness, the PDC drill bit is difficult to cut, and the stone is seriously abraded or broken, a plurality of PDC drill bits are needed to complete the breaking task, and the working efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high strength PDC drill bit has improved the effort that the drill bit can bear, and intensity is higher, has still increased the wearing layer, has improved the life of drill bit.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a high-strength PDC drill bit comprises a main body, wherein a water flow bin is formed in the inner center line of the main body, a plurality of shunting holes are formed in the surface of the main body, one ends of the shunting holes are communicated with the water flow bin, three outer blades are welded on the outer surface of the main body close to the lower end, three inner blades are welded on the lower end of the main body at equal intervals, a first supporting block is welded on the outer surface of the main body close to the upper end, a plurality of sliding holes are formed in the surface of the first supporting block, a plurality of springs are welded on the upper surface of the first supporting block, the upper ends of the springs are welded on the lower surface of a second supporting block, a connecting column is welded on the surface of the inner wall of the second supporting block, a protective sleeve is welded on the outer surface of the second supporting block, the inner wall of the protective sleeve is sleeved on the outer, it is a plurality of the equal slip cap of one end of spacing post is located the sliding hole, the spread groove has been seted up to the upper end of main part, the surface of main part inlays and is equipped with a plurality of strengthening ribs, and is a plurality of the inside of locating outer wing of a knife and interior wing of a knife is all inlayed to the one end of strengthening rib, the surface of main part, outer wing of a knife and interior wing is all scribbled and is equipped with the wearing layer.

In order to keep apart the stone outside the drill bit, as the utility model relates to a high strength PDC drill bit is preferred, the protective sheath is the pipe structure, the inner wall of protective sheath and the surface of first supporting block coincide.

In order to make the broken efficiency of stratum higher, as the utility model relates to a high strength PDC drill bit is preferred, it is three outer wing and interior wing uniform cross arrangement are in the lower terminal surface of main part, and are three the surface of outer wing and interior wing all inlays and is equipped with round pin cutter tooth.

In order to guarantee the pressure of rivers, as the utility model relates to a high strength PDC drill bit is preferred, the lower extreme and the spread groove phase-match of spliced pole.

In order to make rivers erode evenly, conduct the utility model relates to a high strength PDC drill bit is preferred, a plurality of the diffluent hole is annular evenly distributed on the lower extreme surface of main part.

In order to make first supporting block atress even, conduct the utility model relates to a high strength PDC drill bit is preferred, and is a plurality of the spring is annular equidistance with the centre of a circle of first supporting block and arranges.

The utility model provides a high strength PDC drill bit. The method has the following beneficial effects:

(1) this high strength PDC drill bit, when boring under to hard stratum, the device anticlockwise rotation, inlay the round pin cutter tooth of establishing on by outer blade and the interior blade and carry out the breakage to the stratum, rivers pass through the rivers storehouse this moment, spout by a plurality of diffluent holes, dash from the device with earth and stone, and cool down to the device, at the in-process that drills down afterwards, it is smashed to remaining the stratum cutting by outer blade and interior blade, the in-process of drilling down, when exerting pressure downwards, the device adjusts the pressure that the main part received through the spring, make interior blade and the power way of outer blade adjustment cutting, a plurality of strengthening ribs improve the stress of bearing of interior blade and outer blade simultaneously, avoid the drill bit to damage, the intensity of drill bit has been improved.

(2) The wear-resistant layer coated outside the high-strength PDC drill bit protects the main body, the outer blades and the inner blades of the high-strength PDC drill bit from being worn when the high-strength PDC drill bit is used, so that the service life of the high-strength PDC drill bit is prolonged, and the working efficiency of the high-strength PDC drill bit is improved.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a three-dimensional structure of the protective sleeve of the present invention.

In the figure: 1. a main body; 2. an outer blade; 3. a shunt hole; 4. an inner blade; 5. cutting teeth by using a pin; 6. reinforcing ribs; 7. a wear layer; 8. connecting grooves; 9. a spring; 10. a protective sleeve; 11. connecting columns; 12. a second support block; 13. a limiting column; 14. a first support block; 15. a slide hole; 16. and a water flow bin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a high-strength PDC drill bit comprises a main body 1, a water flow bin 16 is formed in the inner center line of the main body 1, a plurality of branch flow holes 3 are formed in the surface of the main body 1, one ends of the branch flow holes 3 are communicated with the water flow bin 16, three outer blades 2 are welded on the outer surface of the main body 1 close to the lower end, three inner blades 4 are welded on the lower end surface of the main body 1 at equal intervals, a first supporting block 14 is welded on the outer surface of the main body 1 close to the upper end, a plurality of sliding holes 15 are formed in the surface of the first supporting block 14, a plurality of springs 9 are welded on the upper surface of the first supporting block 14, the upper ends of the springs 9 are welded on the lower surface of a second supporting block 12, a connecting column 11 is welded on the inner wall surface of the second supporting block 12, a protective sleeve 10 is welded on the outer surface of the second supporting block 12, the inner wall, in sliding hole 15 was located to the equal sliding sleeve of one end of a plurality of spacing posts 13, spread groove 8 had been seted up to the upper end of main part 1, and the surface of main part 1 is inlayed and is equipped with a plurality of strengthening ribs 6, and the one end of a plurality of strengthening ribs 6 is all inlayed and is located the inside of outer wing of a knife 2 and interior wing of a knife 4, and the surface of main part 1, outer wing of a knife 2 and interior wing of a knife 4 is all scribbled and is equipped with wearing layer 7.

In this embodiment: when drilling down a hard stratum, the device rotates anticlockwise, the stratum is broken and cut by the outer blade 2 and the inner blade 4, meanwhile, water flows through the water flow bin 16 and is sprayed out by the plurality of shunting holes 3, the device is washed, soil and stones are washed away from the device, the device is cooled, then in the downward drilling process, when pressure is applied downwards, the connecting column 11 and the main body 1 are fixed through the limiting columns 13 and move along the sliding holes 15 through the plurality of limiting columns 13, the protective sleeve 10 slides on the outer surface of the first supporting block 14, the pressure applied to the main body 1 by the spring 9 is adjusted, the cutting force of the inner blade 2 and the outer blade 4 is adjusted, meanwhile, the bearing stress of the inner blade 4 and the outer blade 2 is improved through the plurality of reinforcing ribs 6, the damage of a drill bit is avoided, the strength of the drill bit is improved, and the drill bit is not easy to damage.

Specifically, the protective sleeve 10 is a circular tube structure, and the inner wall of the protective sleeve 10 is matched with the outer surface of the first supporting block 14.

In this embodiment: when the device is in operation, the inner wall of the protective sleeve 10 is matched with the outer surface of the first supporting block 14, so that sundries are prevented from entering the protective sleeve 10 to influence the buffering effect and damage the internal structure.

Specifically, the three outer blades 2 and the three inner blades 4 are uniformly staggered on the lower end surface of the main body 1, and pin cutting teeth 5 are embedded on the outer surfaces of the three outer blades 2 and the three inner blades 4.

In this embodiment: when the device works, the pin cutter 5 crushes hard strata, then the three outer blades 2 cut the strata of the outer ring, and the three inner blades 4 cut the strata of the inner ring, so that a drill hole is cut.

Specifically, the lower end of the connecting column 11 is matched with the connecting groove 8.

In this embodiment: the device is when buffering, and the lower extreme of spliced pole 11 slides along spread groove 8, and the pressure when making rivers get into rivers storehouse 16 is invariable, guarantees the washing effect of rivers.

Specifically, a plurality of distributing holes 3 are uniformly distributed on the surface of the main body 1 in a ring shape.

In this embodiment: when the water-saving washing machine is used, the water flow is uniformly sprayed out by the shunting holes 3 which are uniformly distributed in an annular shape, and parts welded on the main body 1 are washed and cooled.

Specifically, the plurality of springs 9 are arranged in a ring shape at equal intervals around the center of the first supporting block 14.

In this embodiment: when the device buffers, the plurality of springs 9 provide buffering force, and when the plurality of springs 9 are annularly and equidistantly arranged around the center of the first supporting block 14, the buffering force applied to each part of the device is relatively balanced.

When the device is used, the device rotates anticlockwise, the pin cutting teeth 5 crush hard stratums, the stratums are subjected to pin cutting by the outer blade 2 and the inner blade 4, meanwhile, water flows through the water flow bin 16 and is sprayed out from the plurality of shunting holes 3 to wash the outer blade 2, the inner blade 4 and the pin cutting teeth 5, soil and stones are washed away from the device and cool the device, then, in the downward drilling process, when pressure is applied downwards, the connecting column 11 and the main body 1 are fixed by the limiting columns 13 and move along the sliding holes 15 through the plurality of limiting columns 13, the protective sleeve 10 slides on the outer surface of the first supporting block 14, the inner wall of the protective sleeve 10 is matched with the outer surface of the first supporting block 14, impurities are prevented from entering the inner part of the protective sleeve 10 to influence the buffering effect, the internal structure is broken, the spring 9 adjusts the pressure applied to the main body 1, the lower end of the connecting column 11 slides along the connecting groove 8, the pressure when making rivers get into rivers storehouse 16 is invariable, guarantees the washing effect of rivers, and the power of blade 2 and the cutting of outer blade 4 is said in the adjustment, and a plurality of strengthening ribs 6 improve the bearing stress of blade 4 and outer blade 2 in simultaneously, avoid the drill bit to damage, have improved the intensity of drill bit, and is not fragile.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A high strength PDC drill bit, includes main part (1), its characterized in that: a water flow bin (16) is arranged on the inner central line of the main body (1), a plurality of shunting holes (3) are arranged on the surface of the main body (1), one end of each shunting hole (3) is communicated with the water flow bin (16), three outer blades (2) are welded on the outer surface of the main body (1) close to the lower end, three inner blades (4) are welded on the lower end of the main body (1) at equal intervals on the surface, a first supporting block (14) is welded on the outer surface of the main body (1) close to the upper end, a plurality of sliding holes (15) are arranged on the surface of the first supporting block (14), a plurality of springs (9) are welded on the upper surface of a second supporting block (12), a connecting column (11) is welded on the inner wall surface of the second supporting block (12), and a protective sleeve (10) is welded on the outer surface of the second supporting block (12), the surface of first supporting block (14) is located to the inner wall cover of protective sheath (10), the lower skin weld of second supporting shoe (12) has a plurality of spacing post (13), and is a plurality of slide hole (15) is located to the equal slip cap of one end of spacing post (13), spread groove (8) have been seted up to the upper end of main part (1), the surface of main part (1) is inlayed and is equipped with a plurality of strengthening ribs (6), and is a plurality of the inside of locating outer wing of a knife (2) and interior wing of a knife (4) is all inlayed to the one end of strengthening rib (6), the surface of main part (1), outer wing of a knife (2) and interior wing of a knife (4) is all scribbled and is equipped with wearing layer (7).

2. The high strength PDC bit of claim 1, wherein: the protective sleeve (10) is of a circular tube structure, and the inner wall of the protective sleeve (10) is matched with the outer surface of the first supporting block (14).

3. The high strength PDC bit of claim 1, wherein: the three outer blades (2) and the three inner blades (4) are uniformly staggered on the lower end surface of the main body (1), and pin cutting teeth (5) are embedded on the outer surfaces of the three outer blades (2) and the three inner blades (4).

4. The high strength PDC bit of claim 1, wherein: the lower end of the connecting column (11) is matched with the connecting groove (8).

5. The high strength PDC bit of claim 1, wherein: the plurality of the shunting holes (3) are uniformly distributed on the surface of the main body (1) in an annular shape.

6. The high strength PDC bit of claim 1, wherein: the springs (9) are arranged in a ring shape with the circle center of the first supporting block (14) at equal intervals.