CN112177531A

CN112177531A - Combined type geological drill bit with silt-preventing and hole-blocking functions

Info

Publication number: CN112177531A
Application number: CN202010916047.8A
Authority: CN
Inventors: 李中勇; 邹超; 陈鹏
Original assignee: Qidong Fengsu Drilling Tool Co ltd
Current assignee: Qidong Fengsu Drilling Tool Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-01-05

Abstract

The invention provides a composite geological drill bit with a function of preventing mud and sand from blocking a hole, and relates to the technical field of drilling equipment. This combined type geology drill bit with hole is blocked up in sand prevention, including the drill bit body, the upper surface of drill bit body is fixed with the fixed connector, the inboard rotation of fixed connector is connected with the rim plate, the upper surface of drill bit body just is located the both sides fixedly connected with cutting body of rim plate, the upper surface fixedly connected with of cutting body cuts the tooth, the both sides face of the inboard of first cutting tooth rotates and is connected with the auxiliary disc. Correspond through hemisphere, elastic baffle, elastomer and block inhalant canal, exhalant canal, two apopores, just can open after supplying water, can prevent the entering of mud, act on the rock mass through having middle rotor second cutting tooth, second teeth of a cogwheel, third teeth of a cogwheel and carry out the breakage, improve crushing efficiency, two apopores cooperate the faucet to cool off simultaneously, and efficiency is very high.

Description

Combined type geological drill bit with silt-preventing and hole-blocking functions

Technical Field

The invention relates to the technical field of drilling equipment, in particular to a composite geological drill bit capable of preventing sediment from blocking a hole.

Background

The drill bit is a tool for breaking rock to form a wellbore in a drilling process, in which a compound bit is a bit in which a toothed wheel and pdc cutting teeth are combined with each other, the toothed wheel of the bit is pressed into the rock at a variable angle to break the rock in a scraping manner, and the pdc cutting teeth of the bit cut the rock in a concentric scraping manner. In operation, utilize the centre bore water injection of drilling rod, play the cooling action on the one hand, be used for scouring away the piece that bores on the one hand, because silt can become mud under the effect of flowing water, if mud blocks up the apopore of drill bit, will influence well drilling engineering.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a composite geological drill bit with a silt blocking prevention function, and solves the problem that the drilling engineering is influenced by mud blocking a water outlet hole of the drill bit.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the combined type geological drill bit with the function of preventing silt from blocking a hole comprises a drill bit body, wherein a fixed connector is fixed on the upper surface of the drill bit body, a wheel disc is rotatably connected to the inner side of the fixed connector, the upper surface of the drill bit body is fixedly connected with cutting bodies on two sides of the wheel disc, first cutting teeth are fixedly connected on the upper surface of the cutting bodies, auxiliary discs are rotatably connected on two side surfaces of the inner side of the first cutting teeth, a connecting pipe is rotatably connected on the upper side wall of the drill bit body, an intermediate rotating body is fixedly connected on the upper end surface of the connecting pipe, an elastic baffle is fixedly connected on the outer surface of the connecting pipe, the upper surface of the elastic baffle is in contact with the upper inner wall of the drill bit body, a spring is fixedly connected on the lower surface of the elastic baffle, a hemispherical body is fixedly connected, the interior surface sliding connection of circular slot has the slider, fixedly connected with wire rope between the edge of slider and elastic baffle, the last inner wall of bit body is provided with the inner groovy, the edge of elastic baffle stretches into the top of inner groovy, the last lateral wall of bit body just is located the inboard of inner groovy and is provided with exhalant canal, the last fixed surface of bit body is connected with the hydroecium, the hydroecium is linked together with exhalant canal, the lower lateral wall of bit body is provided with water inlet channel, the lower inner wall of bit body just is located water inlet channel's top and is provided with spherical surface, the lateral wall of middle rotor is provided with the second apopore, the side at middle rotor top is provided with third teeth of a cogwheel, first apopore, the interior fixed surface of middle rotor is connected with the elastomer, the one end of elastomer stretches into first apopore and, the side of middle rotor lower part is provided with the second teeth of a cogwheel, the top surface fixedly connected with second cutting tooth of middle rotor, all be provided with first teeth of a cogwheel on rim plate, the auxiliary disc.

Preferably, the number of the fixed connecting bodies, the number of the wheel disc and the number of the cutting bodies are all three and are uniformly distributed.

Preferably, the intermediate rotor is located at an upper surface of the bit body, and a lower portion of the intermediate rotor is located below the wheel disc.

Preferably, the outer surface of the connecting pipe is provided with a retainer ring, the upper surface of the retainer ring is in contact with the lower surface of the elastic baffle plate, and the retainer ring is positioned on the inner side of the spring.

Preferably, the spherical surface is in contact with a hemispherical surface of the hemisphere.

Preferably, the third gear teeth are provided with two circles, and the first water outlet is located between the two circles of the third gear teeth.

Preferably, the two second gear teeth are meshed with one first gear tooth on the wheel disc, the auxiliary disc is meshed with the wheel disc through the first gear tooth, and the two wheel discs are meshed through the first gear tooth.

Preferably, the number of the water outlet heads is three, and the water outlet heads are all positioned between the wheel disc and the middle rotating body.

The working principle is as follows: during the drilling process, water pushes the hemisphere away from the spherical surface from the drill rod and the water inlet channel, the spring is in a compression state, the middle rotating body is driven to rotate by the first gear teeth under the drilling action of the wheel disc, the middle rotating body drives the elastic baffle to rotate by the connecting pipe, the elastic baffle is driven by the steel wire rope, the steel wire rope drives the sliding block to slide in the circular groove and is used for the reason that the water pushes the elastic baffle to deform and keep away from the water outlet channel from the inner groove, during the rotation process of the elastic baffle, the elastic baffle is in a tilting state, so that the water can flow through the water outlet channel and act on the wheel disc, the auxiliary disc and the cutting body, the water entering the middle rotating body from the connecting pipe presses the elastic body to pull out the part extending into the two water outlets, so that the water can flow out from the two water outlets to cool the wheel disc, the cutting body, the elastic baffle blocks the water outlet channel, the spring pushes the hemispheroid to be propped against the spherical surface, and the elastic body resets and blocks the two water outlet holes.

(III) advantageous effects

The invention provides a composite geological drill bit capable of preventing mud and sand from blocking a hole. The method has the following beneficial effects:

1. according to the invention, the water inlet channel, the water outlet channel and the two water outlet holes are correspondingly blocked by the hemispheroid, the elastic baffle and the elastic body, and the hemispheroid can be opened after water is supplied, so that the phenomenon that slurry enters to influence subsequent drilling work when the hemispheroid is not used can be effectively avoided.

2. The invention has the advantages that the first tooth gear and the first cutting tooth corresponding to the existing tooth gear and pdc cutting tooth are provided, and the auxiliary disc with the first tooth gear is meshed with the first tooth gear of the wheel disc, so that the effect of chips on a cutting body can be effectively reduced, and the service life of the cutting body can be prolonged.

3. According to the invention, the rock mass is crushed by the action of the second cutting teeth, the second gear teeth and the third gear teeth with the intermediate rotating body, so that the crushing efficiency is improved, and meanwhile, the two water outlet holes are matched with the water outlet head for cooling, so that the efficiency is very high.

Drawings

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

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

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is a schematic view of an intermediate rotor of the present invention;

FIG. 5 is a schematic view of the connection between the elastic body and the second water outlet hole according to the present invention;

fig. 6 is a side view of the cutting body of the present invention.

Wherein, 1, a drill body; 2. a spring; 3. a circular groove; 4. a slider; 5. a wire rope; 6. an inner groove; 7. a water outlet channel; 8. a water outlet head; 9. an elastic baffle plate; 10. a wheel disc; 11. a fixed connector; 12. a retainer ring; 13. a hemisphere; 14. a water inlet channel; 15. a first gear tooth; 16. an intermediate rotating body; 17. a first water outlet; 18. a second gear tooth; 19. a third gear tooth; 20. a second water outlet; 21. a connecting pipe; 22. an elastomer; 23. a spherical surface; 24. a first cutting tooth; 25. a cutting body; 26. an auxiliary disc; 27. a second cutting tooth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 6, an embodiment of the present invention provides a composite geological drill bit with silt blocking prevention, which includes a bit body 1 for connecting with a drill rod, a fixed connector 11 fixed on the upper surface of the bit body 1, a wheel disc 10 rotatably connected to the inner side of the fixed connector 11, cutting bodies 25 fixedly connected to the upper surface of the bit body 1 and located on both sides of the wheel disc 10, first cutting teeth 24 fixedly connected to the upper surface of the cutting bodies 25 for cutting rock in a concentric scraping manner, auxiliary discs 26 rotatably connected to both side surfaces of the inner side of the first cutting teeth 24, a connecting pipe 21 rotatably connected to the upper sidewall of the bit body 1 for water circulation, an intermediate rotor 16 fixedly connected to the upper end surface of the connecting pipe 21 for water circulation, an elastic baffle 9 fixedly connected to the outer surface of the connecting pipe 21 for blocking a water outlet channel 7, and after the elastic baffle 9 is pushed open by water from an inner groove 6, the water outlet channel 7 can be used for water to flow through, the upper surface of the elastic baffle plate 9 is in contact with the upper inner wall of the drill bit body 1, the lower surface of the elastic baffle plate 9 is fixedly connected with a spring 2 for pushing a hemispheroid 13 to a spherical surface 23, the elastic baffle plate 9 is positioned in a load reducing hole on the outer side of the spring 2, the load reducing hole is positioned on the inner side of the water outlet channel 7, one end of the spring 2, which is far away from the elastic baffle plate 9, is fixedly connected with a hemispheroid 13 for shielding a water inlet channel 14, a circular groove 3 is arranged inside the drill bit body 1, the inner surface of the circular groove 3 is slidably connected with a sliding block 4, the sliding block 4 can be driven to pinch and slide in the circular groove 3 under the action of a steel wire rope 5 pulled by the elastic baffle plate 9, the steel wire rope 5 is fixedly connected between the sliding block 4 and the edge of the elastic baffle plate 9, the upper inner wall of the drill bit body 1, the water outlet head 8 is fixedly connected to the upper surface of the bit body 1, the water outlet head 8 is communicated with the water outlet channel 7, the lower side wall of the bit body 1 is provided with a water inlet channel 14 for water in a drill rod to enter the bit body 1, the lower inner wall of the bit body 1 is provided with a spherical surface 23 above the water inlet channel 14, the side wall of the intermediate rotating body 16 is provided with a second water outlet hole 20 for water in the intermediate rotating body 16 to reach the wheel disc 10 and the cutting body 25, the side surface of the top of the intermediate rotating body 16 is provided with a third gear tooth 19 and a first water outlet hole 17, the inner surface of the intermediate rotating body 16 is fixedly connected with an elastic body 22, one end of the elastic body 22 extends into the first water outlet hole 17 and the second water outlet hole 20, and the part extending into the first water outlet hole 17 and the second water outlet hole 20 can be pulled out after the water acts on one side of the elastic body 22, the shape of the water-free back is recovered, the side of the lower part of the middle rotor 16 is provided with a second gear tooth 18, the top surface of the middle rotor 16 is fixedly connected with a second cutting tooth 27 for crushing rock mass, and the wheel disc 10 and the auxiliary disc 26 are both provided with a first gear tooth 15 for crushing rock mass in a scraping and extruding mode.

The number of the fixed connecting bodies 11, the wheel disc 10 and the cutting bodies 25 is three and the fixed connecting bodies, the wheel disc and the cutting bodies are evenly distributed.

An intermediate rotor 16 is located at the upper surface of the bit body 1, and the lower portion of the intermediate rotor 16 is located below the wheel disc 10.

The outer surface of the connecting pipe 21 is provided with a retainer ring 12, the upper surface of the retainer ring 12 is in contact with the lower surface of the elastic baffle 9, and the retainer ring 12 is positioned on the inner side of the spring 2.

The spherical surface 23 is in contact with the spherical surface of the hemisphere 13, and when water passes through the water inlet passage 14, the hemisphere 13 is separated from the spherical surface 23.

The third gear teeth 19 are all provided with two rings, and the first water outlet 17 is located between the two rings of the third gear teeth 19 so as to cool the third gear teeth 19.

Two second teeth of a cogwheel 18 mesh with a first teeth of a cogwheel 15 on the rim plate 10 for drive intermediate rotor 16 and rotate after rim plate 10 rotates, supplementary dish 26 meshes with rim plate 10 through first teeth of a cogwheel 15 mutually, can the broken piece of mode get into between rim plate 10 and the cutting body 25, and then influences the rotation of rim plate 10, and two rim plates 10 mesh through first teeth of a cogwheel 15 mutually.

The number of the water outlet heads 8 is three, and the water outlet heads are all positioned between the wheel disc 10 and the intermediate rotating body 16.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A combined type geological drill bit with hole blocking of mud and sand prevention, includes drill bit body (1), its characterized in that: the upper surface of the drill bit body (1) is fixed with a fixed connector (11), the inner side of the fixed connector (11) is rotatably connected with a wheel disc (10), the upper surface of the drill bit body (1) is fixedly connected with cutting bodies (25) on two sides of the wheel disc (10), the upper surface of each cutting body (25) is fixedly connected with a first cutting tooth (24), two side surfaces of the inner side of each cutting tooth (24) are rotatably connected with an auxiliary disc (26), the upper side wall of the drill bit body (1) is rotatably connected with a connecting pipe (21), the upper end surface of each connecting pipe (21) is fixedly connected with an intermediate rotating body (16), the outer surface of each connecting pipe (21) is fixedly connected with an elastic baffle (9), the upper surface of each elastic baffle (9) is in contact with the upper inner wall of the drill bit body (1), and the lower surface of each elastic baffle (9), spring (2) keeps away from one end fixedly connected with hemisphere (13) of elastic baffle (9), the inside of bit body (1) is provided with circular recess (3), the internal surface sliding connection of circular recess (3) has slider (4), fixedly connected with wire rope (5) between the edge of slider (4) and elastic baffle (9), the last inner wall of bit body (1) is provided with inner grove (6), the edge of elastic baffle (9) stretches into the top to inner grove (6), the inboard that the last side wall of bit body (1) just is located inner grove (6) is provided with out water passageway (7), the last fixed surface of bit body (1) is connected with out water head (8), it is linked together with out water passageway (7) to go out water head (8), the lower side wall of bit body (1) is provided with inhalant canal (14), the lower inner wall of bit body (1) just is located the top of inhalant canal (14) and is provided with spherical intake canal (23) face (23) ) The utility model discloses a water-saving device, the lateral wall of middle rotor (16) is provided with second apopore (20), the side at middle rotor (16) top is provided with third teeth of a cogwheel (19), first apopore (17), the internal surface fixedly connected with elastomer (22) of middle rotor (16), the one end of elastomer (22) stretches into in first apopore (17) and second apopore (20), the side of middle rotor (16) lower part is provided with second teeth of a cogwheel (18), the top surface fixedly connected with second cutting tooth (27) of middle rotor (16), all be provided with first teeth of a cogwheel (15) on rim plate (10), auxiliary disc (26).

2. A composite geological drill bit with anti-mud and anti-sand hole blocking function according to claim 1, characterized in that: the number of the fixed connecting bodies (11), the number of the wheel discs (10) and the number of the cutting bodies (25) are all three and are evenly distributed.

3. A composite geological drill bit with anti-mud and anti-sand hole blocking function according to claim 1, characterized in that: the intermediate rotating body (16) is positioned on the upper surface of the bit body (1), and the lower part of the intermediate rotating body (16) is positioned below the wheel disc (10).

4. A composite geological drill bit with anti-mud and anti-sand hole blocking function according to claim 1, characterized in that: the outer surface of the connecting pipe (21) is provided with a retainer ring (12), the upper surface of the retainer ring (12) is in contact with the lower surface of the elastic baffle plate (9), and the retainer ring (12) is positioned on the inner side of the spring (2).

5. A composite geological drill bit with anti-mud and anti-sand hole blocking function according to claim 1, characterized in that: the spherical surface (23) is in contact with the hemispherical surface of the hemisphere (13).

6. A composite geological drill bit with anti-mud and anti-sand hole blocking function according to claim 1, characterized in that: the third gear teeth (19) are provided with two circles, and the first water outlet hole (17) is located between the two circles of the third gear teeth (19).

7. A composite geological drill bit with anti-mud and anti-sand hole blocking function according to claim 1, characterized in that: two second teeth of a tooth (18) meshes with a first teeth of a tooth (15) on rim plate (10) mutually, supplementary dish (26) mesh mutually through first teeth of a tooth (15) with rim plate (10), two rim plate (10) mesh mutually through first teeth of a tooth (15).

8. A composite geological drill bit with anti-mud and anti-sand hole blocking function according to claim 1, characterized in that: the number of the water outlet heads (8) is three, and the water outlet heads are all positioned between the wheel disc (10) and the middle rotating body (16).