A quick-drilling air faucet

Abstract

This invention discloses a rapid drilling air-water tap, relating to the field of drilling, including a core tube (12), one end of which is sequentially equipped with a main shaft (6), an air guide bend (2), and an upper connector (1) of the bend. The main shaft (6) is fitted with a sleeve (9); an upper housing (7) is installed on the outside of the sleeve (9), and one end of the upper housing (7) is connected to a lower housing (10); one end of the lower housing (10) is connected to a lower end cap (11); an adjusting pressure ring (5) is provided on the outer surface of the main shaft (6), and a pressure cap (4) is provided on one end of the adjusting pressure ring (5). The pressure cap (4) is connected to one end of the upper housing (7), and one end of the pressure cap (4) is connected to an upper end cap (3). An angular contact bearing (16) is provided between the upper housing (7) and the shaft (6); one end of the angular contact bearing (16) abuts against the adjusting pressure ring (5). This invention can avoid problems such as stuck drill, hole wall collapse and drilling into isolated rocks caused by complex geological conditions, and its operation is stable and reliable.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and in particular to a rapid drilling air-water tap. Background Technology

[0002] During drilling, the air-water tap serves as a fluid medium transport channel and also as a slag discharge channel for cuttings and debris from rope retrieval and casing drilling. The stability of its working performance, the lifespan of its components, and its overall strength directly affect drilling efficiency and borehole safety.

[0003] Currently, in the process of drilling for strategic minerals (uranium, rare earth, etc.) in complex strata (covered areas), gas-water taps are subject to problems such as stuck drill, borehole wall collapse, and drilling into isolated rocks due to complex geological conditions, which makes the working process unstable. Summary of the Invention

[0004] The purpose of this invention is to provide a rapid drilling air-water tap to solve the problems existing in the prior art, and to avoid problems such as stuck drill, hole wall collapse and drilling into isolated rocks caused by complex geological conditions, and to ensure stable and reliable operation.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a rapid drilling air faucet, comprising a core tube, a main shaft mounted at one end of the core tube, an air guide bend mounted at the end of the main shaft away from the core tube, and an upper connector mounted at the end of the air guide bend away from the main shaft. A connecting through hole is formed on the outer surface of the main shaft near the core tube, and a perforated sleeve is fitted at the connecting through hole. A central through hole is formed on the outer wall of the perforated sleeve at a position corresponding to the connecting through hole. An upper housing is mounted on the outer side of the perforated sleeve near the air guide bend, and a lower housing is fixedly connected to one end of the upper housing. The lower housing is fitted with... A branch pipe is connected to the outer wall of the lower housing outside the flower sleeve, and the position of the branch pipe connected to the lower housing corresponds to the position of the middle through hole; a lower end cover is fixedly connected to the end of the lower housing away from the upper housing; an adjusting pressure ring is provided on the outer surface of the main shaft; a pressure cap is provided at the end of the adjusting pressure ring near the air guide bend; the pressure cap is fixedly connected to the end of the upper housing away from the lower housing; an upper end cover is fixedly connected to the end of the pressure cap away from the upper housing; an angular contact bearing is provided between the upper housing and the rotating shaft; one end of the angular contact bearing abuts against the adjusting pressure ring.

[0007] Optionally, the outer surface of the connector on the bend is provided with wavy protrusions.

[0008] Optionally, a support ring is provided between the upper housing and the main shaft, with one end of the support ring abutting against the lower part of the lower housing near the upper housing; one end of the angular contact bearing abuts against the adjusting pressure ring, and the other end abuts against the support ring.

[0009] Optionally, the outer surface of the gland is provided with a plurality of hexagonal bolts, and the gland is connected to the upper housing through the hexagonal bolts.

[0010] Optionally, the outer surface of the hexagonal bolt is provided with a leveling spring washer.

[0011] Optionally, a first combined sealing ring is provided between the gland and the main shaft; the two ends of the first combined sealing ring abut against the upper end cover and the adjusting pressure ring, respectively.

[0012] Optionally, a second combined sealing ring is provided between the lower housing and the main shaft, with both ends of the second combined sealing ring abutting against the support ring and the flower sleeve, respectively.

[0013] Optionally, a first O-ring rubber seal is provided between the core tube and the main shaft.

[0014] Optionally, a second O-ring rubber seal is provided on the outer surface of the end of the heart tube away from the main shaft.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] The rapid drilling air-water tap provided by this invention greatly improves drilling efficiency, solves problems such as stuck drill, borehole wall collapse and drilling through isolated rocks caused by complex geological conditions, supports rapid verification of strategic mineral exploration, and has profound significance for promoting the application of rope retrieval and pipe-advancing technology that uses air as borehole power.

[0017] The rotating part of the central shaft of the faucet in this invention operates flexibly and stably. The outer tube of the air faucet bears the entire weight of the drill bit inside the hole, and its high tensile strength enables it to withstand the entire weight of the drill bit inside the hole as well as the vibration force generated by the drill string and down-the-hole hammer.

[0018] The sealing device of this invention has good sealing performance. Since compressed air is used as both the power and flushing medium, any gas leakage inside the air-water tap will create localized air pressure resistance in the drill pipe core, affecting the formation of reverse circulation. During drilling, the impact and vibration reaction forces are relatively large. This design's air-water tap features long service life for its components, simple structure, few parts, and ease of maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the upper connector structure of the bend pipe of the present invention;

[0022] Figure 3 This is a schematic diagram of the air guide bend structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the upper end cap structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the capping structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the adjusting pressure ring structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the spindle structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the upper shell structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the support ring structure of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the flower cover of the present invention;

[0030] Figure 11 This is a schematic diagram of the lower shell structure of the present invention;

[0031] Figure 12 This is a schematic diagram of the lower end cap structure of the present invention;

[0032] Figure 13 This is a schematic diagram of the cardiac tube structure of the present invention.

[0033] In the diagram: 1. Upper connector of the bend; 2. Air guide bend; 3. Upper end cap; 4. Pressure cap; 5. Adjusting pressure ring; 6. Main shaft; 7. Upper housing; 8. Support ring; 9. Flower sleeve; 10. Lower housing; 11. Lower end cap; 12. Core tube; 13. Hex bolt; 14. Indicator spring washer; 15. First combined sealing ring; 16. Angular contact bearing; 17. Second combined sealing ring; 18. First O-ring rubber seal; 19. Second O-ring rubber seal. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] The purpose of this invention is to provide a rapid drilling air-water tap to solve the problems existing in the prior art, and to avoid problems such as stuck drill, hole wall collapse and drilling into isolated rocks caused by complex geological conditions, and to ensure stable and reliable operation.

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Please see Figures 1-13 This invention provides a rapid drilling air tap, including a core tube 12, a main shaft 6 installed at one end of the core tube 12, an air guide bend 2 installed at one end of the main shaft 6, and an upper connector 1 installed at one end of the air guide bend 2; the outer surface of the upper connector 1 is provided with a wavy protrusion, and its cross-sectional projection is sawtooth-shaped; a flower sleeve 9 is fitted on the outer surface of the main shaft 6 connected to the core tube 12, and a lower housing 10 is installed through the flower sleeve 9; the outer side wall of the lower housing 10 is provided with a branch pipe communicating with the middle through hole of the flower sleeve 9, which facilitates use. The tubular main structure consists of a core tube 12, a main shaft 6, an upper connector 1 for the bent tube, a gas guide bend 2, and a lower housing 10. A lower end cap 11 is provided on the outer surface of the main shaft 6 near the core tube 12. An adjusting pressure ring 5 is provided on the outer surface of the other end of the main shaft 6. A pressure cap 4 is provided at the end of the adjusting pressure ring 5 furthest from the sleeve 9. An upper housing 7 is provided on the outer surface of the main shaft 6. One end of the upper housing 7 is fixedly connected to the pressure cap 4. An upper end cap 3 is provided at the end of the end cap furthest from the upper housing 7. An angular contact bearing 16 and a support ring 8 are provided between the upper housing 7 and the rotating shaft 6. One end abuts against the lower part of the connection end between the lower housing 10 and the upper housing 7. The angular contact bearing 16 is located between the adjusting pressure ring 5 and the support ring 8, which increases the sealing performance of the device and makes the connection between the angular contact bearing 16 and the support ring 8 tighter and the sealing effect better. Multiple hexagonal bolts 13 are inserted on the outer surface of the cover 4. The cover 4 is connected to the upper housing 7 through the hexagonal bolts 13. The outer surface of the hexagonal bolts 13 is provided with a leveling spring washer 14. The threaded connection facilitates connection, assembly and subsequent maintenance.

[0038] A first combined sealing ring 15 is provided between the pressure cap 4 and the main shaft 6; the two ends of the first combined sealing ring 15 abut against the upper end cap 3 and the adjusting pressure ring 5, respectively. A second combined sealing ring 17 is provided between the lower housing 10 and the main shaft 6, one of which abuts against the support ring 8 and the flower sleeve 9, respectively, and the other abuts against the flower sleeve 9 and the lower end cap 11, respectively. A first O-ring rubber seal 18 is provided between the core tube 12 and the main shaft 6. A second O-ring rubber seal 19 is provided on the outer surface of the end of the core tube 12 away from the main shaft 6. The sealing performance of the device is increased by setting multiple sets of sealing rings. Since compressed air is used as the power medium and flushing medium, once gas leakage occurs inside the air-water tap, it will cause local air pressure resistance in the drill pipe core tube, affecting the formation of reverse circulation.

[0039] In summary, the rapid drilling air-water tap provided by this invention greatly improves drilling efficiency, solves problems such as stuck drill bits, borehole collapse, and drilling through isolated boulders caused by complex geological conditions, supports rapid verification in strategic mineral exploration, and has profound significance for promoting the application of rope-assisted retrieval and casing-in technology using air as the borehole power source. The rotating part of the tap's central shaft operates flexibly and stably. The outer tube of the air-water tap bears the entire weight of the drill string inside the borehole; its high tensile strength allows it to withstand the entire weight of the drill string and the vibration forces generated by the drill string and down-the-hole hammer. The sealing device has good sealing performance. Because compressed air is used as the power and flushing medium, any gas leakage inside the air-water tap will create local pressure resistance in the drill string core tube, affecting the formation of reverse circulation. During drilling, the impact and vibration reaction forces are relatively large; this design's air-water tap features long service life for all components, a simple structure, few parts, and easy maintenance.

[0040] In the description of this invention, it should be noted that the terms "center," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A fast drilling air / water swivel, characterized by: The utility model provides a kind of air guide elbow pipe and main shaft connecting device, including heart tube (12), one end of the heart tube (12) is equipped with main shaft (6), the main shaft (6) is equipped with air guide elbow pipe (2) away from one end of the heart tube (12), the air guide elbow pipe (2) is equipped with elbow pipe upper joint (1) away from one end of the main shaft (6), the outer surface of the main shaft (6) is close to heart tube (12) one end and is equipped with connecting through-hole, the main shaft connecting through-hole position is equipped with flower cover (9);The outer side of the flower cover (9) is close to the one end of air guide elbow pipe (2) and is equipped with upper shell (7), and one end of upper shell (7) is fixedly connected with lower shell (10);The one end of lower shell (10) away from upper shell (7) is fixedly connected with lower end cover (11), the outer surface of the main shaft (6) is equipped with adjusting pressure ring (5), the one end of the adjusting pressure ring (5) is close to the air guide elbow pipe (2) and is equipped with gland (4), the one end of the gland (4) away from lower shell (10) is fixedly connected with upper shell (7), the one end of the gland (4) away from upper shell (7) is fixedly connected with upper end cover (3), and the upper shell (7) and main shaft (6) are equipped with angular contact bearing (16);The one end of the angular contact bearing (16) is in contact with the adjusting pressure ring (5);The upper shell (7) and the main shaft (6) are equipped with support ring (8), and the one end of the support ring (8) is in contact with the lower shell (10) and the lower part of the one end of the upper shell (7);The one end of the angular contact bearing (16) is in contact with the adjusting pressure ring (5), and the other end is in contact with the support ring (8).

2. The fast-drilling air hammer as claimed in claim 1, characterized in that: The outer surface of the elbow pipe upper joint (1) is provided with a wave-shaped protrusion.

3. The fast-drilling air hammer as set forth in claim 1, wherein: The outer surface of the gland (4) is provided with a plurality of hexagonal bolts (13), and the gland (4) is connected between the hexagonal bolts (13) and the upper shell (7).

4. The fast-drilling air hammer as set forth in claim 3, wherein: The outer surface of the hexagonal bolt (13) is provided with a table standard spring washer (14).

5. The fast-drilling air hammer as defined in claim 1, wherein: The first combined sealing ring (15) is arranged between the gland (4) and the main shaft (6), and the two ends of the first combined sealing ring (15) are in contact with the upper end cover (3) and the adjusting pressure ring (5) respectively.

6. The fast-drilling air hammer as defined in claim 1, wherein: The second combined sealing ring (17) is arranged between the lower shell (10) and the main shaft (6), and the two ends of the second combined sealing ring (17) are in contact with the support ring (8) and the flower cover (9) respectively.

7. The fast-drilling air hammer as defined in claim 1, wherein: The first O-shaped rubber sealing ring (18) is arranged between the heart tube (12) and the main shaft (6).

8. The fast-drilling air hammer as defined in claim 1, wherein: The second O-shaped rubber sealing ring (19) is arranged on the outer surface of the one end of the heart tube (12) away from the main shaft (6).

Images