CN217518602U

CN217518602U - Wear-resistant diamond PDC drill bit

Info

Publication number: CN217518602U
Application number: CN202221876396.2U
Authority: CN
Inventors: 郭培豪
Original assignee: Henan Karek Construction Machinery Co ltd
Current assignee: Henan Karek Construction Machinery Co ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-09-30
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses a wear-resistant diamond PDC drill bit, which relates to the technical field of drill bits and comprises a drill bit connecting sleeve, wherein the side wall of the drill bit connecting sleeve is provided with a first water outlet hole, each first water outlet hole is positioned between two cutting tooth sheets, the inner wall of the first water outlet hole is provided with a rotating groove, the inside of the rotating groove is provided with an anti-blocking mechanism, when water flows out of the first water outlet hole, the water collecting plate and a fixed rod can be driven to rotate continuously through the arrangement of the anti-blocking mechanism, so that the water collecting plate and the fixed rod can be continuously pushed by mud blocks or stones near the first water outlet hole, thereby the situation that the first water outlet hole is blocked by mud blocks or stones which have larger volume or are close to the first water outlet hole is avoided as much as possible, the water flow in the first water outlet hole is ensured to flow out smoothly, and the drill bit burning situation is avoided as much as possible, the service life of the device is prolonged.

Description

Wear-resistant diamond PDC drill bit

Technical Field

The utility model relates to a drill bit technical field, in particular to wear-resisting diamond PDC drill bit.

Background

The drilling engineering is an important means and link for the exploration and development of oil and gas, and the drill bit is a necessary drilling tool in the geological drilling industry, wherein the use frequency of the diamond PDC drill bit is relatively high.

However, when the conventional diamond PDC drill bit is used, in order to cool the drill bit and clean powder, stone and the like generated in the drilling process of the drill bit, a water outlet hole is usually formed in the center of the drill bit to spray water flow to cool and clean the drill bit, however, the water flow is sprayed linearly and cannot act on the cutting tooth piece of the drill bit, so that the cooling effect on the cutting tooth piece is poor, the cutting tooth piece is always in a state with high temperature, and the drill bit is easily damaged due to the drill burning phenomenon.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least, provide a wear-resisting diamond PDC drill bit, the cooling that can solve the drill bit is comprehensive inadequately, the poor problem of cooling effect.

In order to achieve the above purpose, the utility model provides a following technical scheme: a wear-resistant diamond PDC drill bit comprises a drill bit connecting sleeve, wherein cutting tooth sheets which are arranged at equal intervals are fixedly connected to the top of the drill bit connecting sleeve, a first water outlet hole is formed in the side wall of the drill bit connecting sleeve, the number of the first water outlet holes is matched with the number of the cutting tooth sheets, each first water outlet hole is located between two cutting tooth sheets, a rotating groove is formed in the inner wall of each first water outlet hole, and an anti-blocking mechanism is arranged inside each rotating groove;

the anti-blocking mechanism comprises a rotating shaft, the surface of the rotating shaft is rotatably connected with the inner wall of the rotating groove, fixing rods which are arranged at equal intervals are fixedly connected to the surface of the rotating shaft, a water collecting plate is fixedly connected to one end, far away from the rotating shaft, of each fixing rod, and the water collecting plate is shaped like a bowl.

Preferably, two mounting holes are formed in the upper end of the drill bit connecting sleeve, baffles are fixedly connected to the inner walls of the two mounting holes, the two baffles are identical in structure, and second water outlet holes penetrating through the surfaces of the baffles are formed in the surfaces of the baffles.

Preferably, the inner wall of the baffle is provided with a first through hole penetrating through the surface of the baffle, the surface of the drill bit connecting sleeve is provided with a second through hole, and the first through hole is communicated with the second through hole.

Preferably, the cross section of the baffle is in a tooth shape.

Preferably, the first through hole and the second through hole are both obliquely arranged.

Preferably, the top of the drill bit connecting sleeve is fixedly connected with two pushing blocks, the two pushing blocks are conical, and the two pushing blocks and the two mounting holes are circumferentially distributed at equal intervals.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) this wear-resisting diamond PDC drill bit, through preventing the setting of jam mechanism, when making rivers flow from first apopore, can drive the continuous rotation that carries out of water-collecting plate and dead lever, thereby make water-collecting plate and dead lever near the mud piece or the stone near first apopore that can be continuous promote, thereby avoided the mud piece or the stone that the volume is great or the volume is close with first apopore to carry out the condition that blocks up to first apopore as far as possible, the rivers of having guaranteed in the first apopore flow smoothly, the normal cooling to the drill bit has been guaranteed, and then avoided the condition that the drill bit appears burning and bores as far as possible, avoided the drill bit as far as possible to soften, make the condition that the drill bit wearability reduces, thereby the wearability of drill bit has been improved, the life of device has been improved.

(2) This wear-resisting diamond PDC drill bit through the setting of ejector pad, can carry out the during operation at the drill bit, can push away or smash the mud piece or the stone of cutting teeth inner wall, open a way for the mounting hole, and then avoided the mud piece or the stone of cutting teeth inner wall to carry out the condition of blockking up with the second apopore on the baffle as far as possible, guaranteed that rivers can be discharged from the second apopore smoothly, and then improved the cooling efficiency of device.

(3) This wear-resisting diamond PDC drill bit is the setting of slope form through first through-hole and second through-hole, makes spun rivers not straight from the second through-hole, but is the slope form to increased the area of rivers to peripheral diffusion, and then improved rivers to the cooling area and the cooling effect of drill bit, thereby avoided the drill bit as far as possible to be overheated for a long time operating temperature, the condition of softening appears in messenger's drill bit, and then improved the wearability and the life of drill bit.

Drawings

The invention will be further described with reference to the following figures and examples:

FIG. 1 is a schematic structural view of a wear-resistant diamond PDC drill bit of the present invention;

fig. 2 is a front view of a first water outlet hole of the present invention;

FIG. 3 is an enlarged schematic view of the present invention at A in FIG. 1;

fig. 4 is a front view of the drill bit connecting sleeve of the present invention.

Reference numerals: 1. connecting sleeves; 2. cutting the tooth sheet; 3. a first water outlet hole; 4. a push block; 5. a water trap plate; 6. fixing the rod; 7. a rotating groove; 8. a rotating shaft; 9. a first through hole; 10. mounting holes; 11. a baffle plate; 12. a second water outlet; 13. a second via.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the terms greater than, less than, exceeding, etc. are understood to exclude the number, and the terms above, below, inside, etc. are understood to include the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a wear-resisting diamond PDC drill bit, including drill bit adapter sleeve 1, drill bit adapter sleeve 1 is inside to be provided with the screw thread, can be connected with the stock, the cutting teeth piece 2 that the top fixedly connected with equidistance of drill bit adapter sleeve 1 was arranged, the main work component of drill bit, first apopore 3 has been seted up to the lateral wall of drill bit adapter sleeve 1, the quantity of first apopore 3 is identical with the quantity of cutting teeth piece 2, every first apopore 3 all is located between two cutting teeth piece 2, and then make the rivers from among first apopore 3 can spray the surface of cutting teeth piece 2, cool off cutting teeth piece 2, the condition that the burning was bored appears after having avoided cutting teeth piece 2 to try hard to work for a long time, and the service life of drill bit is prolonged.

Rotation groove 7 has been seted up to the inner wall of first apopore 3, the inside of rotating groove 7 is provided with prevents blockking up the mechanism, prevent blockking up the mechanism and include pivot 8, the surface of pivot 8 is connected with the inner wall rotation that rotates groove 7, the fixed surface of pivot 8 is connected with dead lever 6 that the equidistance was arranged, the one end fixedly connected with water-collecting plate 5 of pivot 8 is kept away from to dead lever 6, device initial state, water-collecting plate 5 and dead lever 6 bulge slightly in the surface of drill bit adapter sleeve 1, water-collecting plate 5 shape is the bowl form, thereby the area of contact of water-collecting plate 5 with rivers has been increased, and then the impact force of rivers to water-collecting plate 5 has been increased, the smooth operation of device has been guaranteed.

Two mounting holes 10 are formed in the upper end of a drill bit connecting sleeve 1, baffles 11 are fixedly connected to the inner walls of the two mounting holes 10, the structures on the two baffles 11 are the same, the cross sections of the baffles 11 are in the shape of teeth, second water outlet holes 12 penetrating through the surfaces of the baffles 11 are formed in the surfaces of the baffles 11, first through holes 9 penetrating through the surfaces of the baffles 11 are formed in the inner walls of the baffles 11, second through holes 13 are formed in the surfaces of the drill bit connecting sleeve 1, the first through holes 9 are communicated with the second through holes 13, the first through holes 9 and the second through holes 13 are obliquely arranged, water flowing into the baffles 11 is gathered through the teeth of the baffles 11, impact force of the water flowing out of the second water outlet holes 12 is increased, the possibility that mud blocks or stones block the second water outlet holes 12 is reduced, and meanwhile, the inner walls of the baffles 11 are obliquely arranged, so that the water flows impact the inner walls of the baffles 11, can take advantage of the situation and get into first through-hole 9, then flow from second through-hole 13, the smooth operation of device has been guaranteed, be the setting of slope form through first through-hole 9 and second through-hole 13 simultaneously, make from second through-hole 13 spun rivers not straight, but be the slope form, thereby increased rivers to the area of peripheral diffusion, and then improved rivers to the cooling area and the cooling effect of drill bit, thereby avoided the drill bit long-time operating temperature as far as possible overheated, the condition of softening appears in messenger's drill bit, and then the wearability and the life of drill bit have been improved.

The top of the drill bit connecting sleeve 1 is fixedly connected with two push blocks 4, the two push blocks 4 are conical, the two push blocks 4 and the two mounting holes 10 are distributed at equal intervals, and the arrangement of the push blocks 4 can push away or break the mud blocks or stone blocks on the inner wall of the cutting tooth piece 2 when the drill bit works, so as to open the mounting holes 10, further avoid the situation that the mud blocks or stone blocks on the inner wall of the cutting tooth piece 2 block the second water outlet hole 12 on the baffle plate 11 as much as possible, ensure that water flow can be smoothly discharged from the second water outlet hole 12, further improve the cooling efficiency of the device, and simultaneously, through the conical arrangement of the push blocks 4, the push blocks 4 can break the stone blocks or mud blocks on the inner wall of the cutting tooth piece 2 when the drill bit rotates, reduce the volume of the mud blocks or stone blocks, further avoid the situation that the stone blocks or mud blocks block blocks block the second water outlet hole 12 as much as possible, the smooth flowing of water flow is ensured, the cooling efficiency of the device is ensured, the drill bit is prevented from being burnt as much as possible, the drill bit is prevented from being softened as much as possible, the abrasion resistance of the drill bit is reduced, and the service life of the device is prolonged.

When in use, the anchor rod is connected with the drill bit connecting sleeve 1, then the device is started, water flows flow out from the first water outlet hole 3, and then the water collecting plate 5 is impacted, and then the fixed rod 6 drives the rotating shaft 8 to rotate in the first water outlet hole 3 without stopping, and then mud blocks or stones close to the first water outlet hole 3 can be pushed, so that the situation that the water collecting plate 5 and the fixed rod 6 rotate continuously when the water flows out from the first water outlet hole 3 is avoided as much as possible, and therefore the mud blocks or stones close to the first water outlet hole 3 can be pushed continuously by the water collecting plate 5 and the fixed rod 6, and the situation that the mud blocks or stones which are large in volume or are close to the first water outlet hole 3 block the first water outlet hole 3 is avoided as much as possible, guaranteed the rivers in the first apopore 3 and flowed smoothly, guaranteed the normal cooling to the drill bit, and then avoided the drill bit to appear burning to bore as far as possible, the condition of taking place to damage to the life of device has been improved.

The working principle is as follows: during the use, be connected the stock with drill bit adapter sleeve 1, starting drive afterwards, rivers flow from first apopore 3, and then strike board 5 that gathers water, and then drive rotation that pivot 8 does not stop in first apopore 3 through dead lever 6, and then can promote mud piece or the stone near first apopore 3, and then avoided the mud piece or the stone that the volume is great or the volume is close to with first apopore 3 to stop up first apopore 3 as far as possible, guaranteed that rivers cool off cutting teeth piece 2 smoothly.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A wear-resistant diamond PDC drill bit is characterized in that: the anti-blocking drill bit comprises a drill bit connecting sleeve (1), wherein cutting tooth sheets (2) which are arranged at equal intervals are fixedly connected to the top of the drill bit connecting sleeve (1), first water outlet holes (3) are formed in the side wall of the drill bit connecting sleeve (1), the number of the first water outlet holes (3) is identical to that of the cutting tooth sheets (2), each first water outlet hole (3) is located between two cutting tooth sheets (2), a rotating groove (7) is formed in the inner wall of each first water outlet hole (3), and an anti-blocking mechanism is arranged inside each rotating groove (7);

the anti-blocking mechanism comprises a rotating shaft (8), the surface of the rotating shaft (8) is rotatably connected with the inner wall of a rotating groove (7), fixing rods (6) which are arranged at equal intervals are fixedly connected to the surface of the rotating shaft (8), one end, far away from the rotating shaft (8), of each fixing rod (6) is fixedly connected with a water collecting plate (5), and the water collecting plate (5) is shaped like a bowl.

2. A wear resistant diamond PDC bit, according to claim 1, wherein: two mounting holes (10) have been seted up to the upper end of drill bit adapter sleeve (1), the inner wall fixedly connected with baffle (11) of two mounting holes (10), and the structure homogeneous phase on two baffles (11) is the same, and second apopore (12) that run through baffle (11) surface are seted up on the surface of baffle (11).

3. A wear resistant diamond PDC bit, according to claim 2, wherein: the inner wall of the baffle (11) is provided with a first through hole (9) penetrating through the surface of the baffle (11), the surface of the drill bit connecting sleeve (1) is provided with a second through hole (13), and the first through hole (9) is communicated with the second through hole (13).

4. A wear resistant diamond PDC bit, according to claim 2, wherein: the cross section of the baffle (11) is in a tooth shape.

5. A wear resistant diamond PDC bit, according to claim 3, wherein: the first through hole (9) and the second through hole (13) are obliquely arranged.

6. A wear resistant diamond PDC bit, according to claim 2, wherein: the top of the drill bit connecting sleeve (1) is fixedly connected with two pushing blocks (4), the two pushing blocks (4) are in a conical shape, and the two pushing blocks (4) and the two mounting holes (10) are distributed at equal intervals in the circumference.