CN216517886U

CN216517886U - Segmented air-entraining drilling tool system

Info

Publication number: CN216517886U
Application number: CN202122638295.3U
Authority: CN
Inventors: 苗海元; 于帅; 丁航航; 苗笛
Original assignee: Beijing Yili Ecological Environment Treatment Co ltd
Current assignee: Beijing Yili Ecological Environment Treatment Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-05-13
Anticipated expiration: 2031-10-29

Abstract

The utility model provides a segmented air-entraining drilling tool system. The segmented bleed air drilling tool system comprises: the inner part of the body part is provided with a communicating cavity which is communicated with the top and the bottom of the body part respectively, the circumferential side wall of the body part is provided with a first exhaust channel, and two ends of the first exhaust channel are communicated with the communicating cavity and the outer side of the body part respectively; the one-way air guide assembly is arranged in the first exhaust channel, an air inlet of the one-way air guide assembly faces the communicating cavity, and an air outlet of the one-way air guide assembly faces the outer side of the body portion. The utility model solves the problem that the pneumatic down-the-hole hammer drilling cannot be constructed in the medium-deep hole construction in the prior art, particularly in the shallow drilling hole with a water level.

Description

Segmented air-entraining drilling tool system

Technical Field

The utility model relates to the field of drilling construction appliances, in particular to a segmented air-entraining drilling tool system.

Background

The drilling construction process of the pneumatic down-the-hole hammer is widely applied to drilling construction in the fields of petroleum, chemical engineering, metallurgy, coal, nuclear industry, building, railways, highways and the like. The method has the characteristics of high construction efficiency which is several times of that of the common drilling process, and particularly has more remarkable efficiency for drilling hard rocks. However, as the depth of the hole increases, sufficient air pressure and air volume of the air compressor are required. The drilling machine transmits pressure to the drill bit through the drilling tool and the impactor, and the piston in the impactor reciprocates through high-pressure gas generated by rotation and the air compressor to generate impact power to strike the drill bit, so that rocks are crushed. Meanwhile, the high-pressure gas discharges rock powder out of the hole from the annular gap between the hole wall and the drilling tool through the impactor.

In the deep hole construction, the wind pressure and the amount of wind that the air compressor machine produced are certain, and the rock powder after the drilling breakage can not discharge the rock powder drill way after reaching certain hole depth owing to receive the restriction of wind pressure. Particularly, when a water-bearing stratum with a shallow water level is constructed, not only the gravity of rock powder but also the pressure of water need to be overcome. Therefore, the process still has a plurality of problems to be solved in deep hole construction.

Therefore, the problem that the pneumatic down-the-hole hammer drilling construction cannot be constructed in deep hole construction, particularly in shallow drilling holes with a low water level exists in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a segmented air-entraining drilling tool system to solve the problem that in medium-deep hole construction in the prior art, particularly pneumatic down-the-hole hammer drilling in shallow holes with a lower water level cannot be constructed.

In order to achieve the above object, according to one aspect of the present invention, there is provided a segmented bleed air drilling system comprising a bleed air device and a plurality of drill rods connected in series, at least two adjacent drill rods being connected by the bleed air device, the bleed air device comprising: the inner part of the body part is provided with a communicating cavity which is communicated with the top and the bottom of the body part respectively, the circumferential side wall of the body part is provided with a first exhaust channel, and two ends of the first exhaust channel are communicated with the communicating cavity and the outer side of the body part respectively; the one-way air guide assembly is arranged in the first exhaust channel, an air inlet of the one-way air guide assembly faces the communicating cavity, and an air outlet of the one-way air guide assembly faces the outer side of the body portion.

Furthermore, the first exhaust passage is linear, and an included angle between the first exhaust passage and the horizontal direction is larger than 0 degree and smaller than 90 degrees.

Further, first exhaust passage is including the first section and the second section that connect in order, and the relative second section of first section is close to the intercommunication chamber, and the diameter of first section is less than the diameter of second section, and one-way air guide assembly sets up at first section.

Further, the inner diameter of the first section is the same as the outer diameter of the one-way air guide device, and one end of the one-way air guide device, which is far away from the communicating cavity, is flush with one end of the first section, which is close to the second section.

Further, the circumferential outer side wall of the body portion has a guide projection extending toward the top of the body portion, the guide projection and the circumferential outer side wall of the body portion forming a second exhaust passage, the second exhaust passage communicating with the first exhaust passage.

Further, the direction is protruding including connecting in order and being the first linkage segment and the second linkage segment that the angle set up, and first linkage segment is connected with the circumference lateral wall of this somatic part, and the hookup location of the circumference lateral wall of first linkage segment and this somatic part is located the open-ended below of the outside intercommunication of first exhaust passage and this somatic part, and the second linkage segment extends towards the top of this somatic part.

Further, the second exhaust passage includes an accommodation section and a connection section, the connection section is close to the top of the body part relative to the accommodation section, and the accommodation section is located below the opening of the first exhaust passage and the outside of the body part.

Further, the top and the bottom of the body portion respectively have tapered structures, the two tapered structures are contracted in directions away from each other, and one ends of the two tapered structures away from each other have a connection plane.

Further, the inner diameter of the communication cavity of the body part of the air entraining device is the same as the inner diameter of the drill rod.

By applying the technical scheme of the utility model, the segmented air-entraining drilling tool system comprises an air-entraining device and a plurality of drill rods, wherein the drill rods are sequentially connected, at least two adjacent drill rods are connected through the air-entraining device, and the air-entraining device comprises a body part and a one-way air guide assembly. The inner part of the body part is provided with a communicating cavity which is communicated with the top and the bottom of the body part respectively, the circumferential side wall of the body part is provided with a first exhaust channel, and two ends of the first exhaust channel are communicated with the communicating cavity and the outer side of the body part respectively; the one-way air guide assembly is arranged in the first exhaust channel, an air inlet of the one-way air guide assembly faces the communicating cavity, and an air outlet of the one-way air guide assembly faces the outer side of the body portion.

When the subsection air-entraining drilling tool system in the application is used, the air-entraining device is provided with the body part, so that the air-entraining device can be connected with the adjacent drill rods through the body part, and the two adjacent drill rods can be communicated through the communicating cavity of the body part. That is, when the air entraining device in the present application is used to connect two drill rods, one of the drill rods is connected to the top of the body portion and communicates with the communication chamber, and the other drill rod is connected to the bottom of the body portion and communicates with the communication chamber. And because the circumferential side wall of the body part is provided with the first exhaust channel, part of high-pressure gas inside the drill rod connected with the air entraining device can be discharged to the outer side of the air entraining device through the first exhaust channel and the one-way air guide assembly, so that the water column carrying the rock dust can be discharged to the position of the air entraining device only by the high-pressure gas at the bottom of the drill hole, and then the water column carrying the rock dust can be continuously discharged to the ground surface through the high-pressure gas discharged by the first exhaust channel. And because the air entraining device also comprises the one-way air guide assembly, rock powder and water can be effectively prevented from flowing backwards into the communicating cavity through the first air exhaust channel. Therefore, the problem that pneumatic down-the-hole hammer drilling construction effect is poor among the deep hole construction in the prior art has been solved effectively to bleed device in this application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

figure 1 shows a schematic structural view of a bleed air arrangement of a staged bleed air drilling system according to a specific embodiment of the utility model;

figure 2 shows a schematic view of the segmented bleed air drilling system of the present application as it extends into a borehole.

Wherein the figures include the following reference numerals:

10. a body portion; 11. a communicating cavity; 12. a first exhaust passage; 13. a guide projection; 131. a first connection section; 132. a second connection section; 14. a second exhaust passage; 15. a tapered structure; 20. a unidirectional gas guide component; 30. and (5) drilling a rod.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the utility model.

In order to solve the problem that the pneumatic down-the-hole hammer drilling construction effect is poor in the deep hole construction of the prior art, the application provides a segmentation air-entraining drilling tool system.

As shown in fig. 2, the present application provides a segmented bleed air drilling system comprising a plurality of drill rods 30 and at least one bleed air device described below. A plurality of drill rods 30 are connected in sequence; at least two adjacent drill rods 30 are connected by means of a bleed air device. In fig. 2, the direction of the arrow is the flow direction of the high-pressure gas.

As shown in fig. 1, the air entraining device in this application includes a body portion 10 and a one-way air guide assembly 20. The inside of the body part 10 is provided with a communication cavity 11, the communication cavity 11 is respectively communicated with the top and the bottom of the body part 10, the circumferential side wall of the body part 10 is provided with a first exhaust channel 12, and two ends of the first exhaust channel 12 are respectively communicated with the communication cavity 11 and the outside of the body part 10; the one-way air guide 20 is disposed inside the first exhaust passage 12 with an air inlet of the one-way air guide 20 facing the communicating chamber 11 and an air outlet of the one-way air guide 20 facing the outside of the main body 10.

When the air entraining device in the application is used, because the air entraining device is provided with the body part 10, the air entraining device can be connected with two adjacent drill rods 30 through the body part 10, so that two adjacent drill rods 30 can be communicated through the communication cavity 11 of the body part 10. That is, when the air-entraining device in the present application is used to connect two drill rods 30, one of the drill rods 30 is connected to the top of the body portion 10 and communicates with the communication chamber 11, and the other drill rod 30 is connected to the bottom of the body portion 10 and communicates with the communication chamber 11. And because the circumferential side wall of the body part 10 is provided with the first exhaust channel 12, part of the high-pressure gas inside the drill rod 30 connected with the air-entraining device can be discharged to the outside of the air-entraining device through the first exhaust channel 12 and the one-way air guide assembly 20, so that only the high-pressure gas at the bottom of the drill hole can discharge the water column carrying the rock dust to the position of the air-entraining device, and then the water column carrying the rock dust can be continuously discharged to the ground surface through the high-pressure gas discharged from the first exhaust channel 12. Since the air-entraining device in the present application further comprises the one-way air guide assembly 20, rock dust and water can be effectively prevented from flowing backward into the communicating cavity 11 through the first air exhaust channel 12. Therefore, the problem that pneumatic down-the-hole hammer drilling construction effect is poor among the deep hole construction in the prior art has been solved effectively to bleed device in this application.

Optionally, the first exhaust channel 12 is linear, and an included angle between the first exhaust channel 12 and the horizontal direction is greater than 0 degree and less than 90 degrees. It should be noted that, since the water column carrying the rock dust is discharged to the ground surface by the high-pressure gas discharged from the first exhaust passage 12 in the present application, the first exhaust passage 12 needs to be disposed to be opened upward to ensure that the high-pressure gas can be discharged in a direction toward the ground surface.

In one embodiment of the present application, the first exhaust passage 12 includes a first section and a second section connected in series, the first section is adjacent to the communicating chamber 11 relative to the second section, the first section has a diameter smaller than that of the second section, and the one-way air guide 20 is disposed at the first section.

Preferably, the inner diameter of the first section is the same as the outer diameter of the one-way gas guide, and the end of the one-way gas guide far away from the communicating cavity 11 is flush with the end of the first section close to the second section. Through the arrangement, the unidirectional air guide device can be positioned, so that the stability of the unidirectional air guide device is ensured.

Alternatively, the circumferential outer side wall of the body portion 10 has a guide projection 13 extending toward the top of the body portion 10, the guide projection 13 and the circumferential outer side wall of the body portion 10 form a second exhaust passage 14, and the second exhaust passage 14 communicates with the first exhaust passage 12. Through the arrangement, the discharge direction of the high-pressure gas can be guided through the second exhaust channel 14, so that the service performance of the air entraining device can be ensured. That is, with this arrangement, the high-pressure gas enters the second exhaust passage 14 after being discharged from the first exhaust passage 12, and the flow direction of the high-pressure gas is changed by the second exhaust passage 14.

Specifically, the guide protrusion 13 includes a first connection section 131 and a second connection section 132 which are sequentially connected and are arranged at an angle, the first connection section 131 is connected with the circumferential outer side wall of the main body 10, the connection position of the first connection section 131 and the circumferential outer side wall of the main body 10 is located below the opening of the first exhaust passage 12 communicating with the outer side of the main body 10, and the second connection section 132 extends toward the top of the main body 10. The second exhaust duct 14 includes a receiving section and a connecting section, the connecting section is close to the top of the main body 10 relative to the receiving section, and the receiving section is located below the opening of the first exhaust duct 12 communicating with the outside of the main body 10. In this application because one-way air guide sets up in first exhaust passage 12, so have the rock powder to enter into second exhaust passage 14, consequently can guarantee through setting up the holding section that the rock powder can not block up first exhaust passage 12 after entering second exhaust passage 14 to can guarantee bleed device's performance.

Alternatively, the top and bottom of the body portion 10 have tapered structures 15, respectively, the two tapered structures 15 are contracted in directions away from each other, and one ends of the two tapered structures 15 away from each other have a connection plane. Through setting up convergent structure 15, when being connected bleed device and drilling rod 30, can make drilling rod 30 cover establish the outside at convergent structure 15 to guarantee the sealing performance between drilling rod 30 and the bleed device, and then guarantee that high-pressure gas can be discharged by first exhaust passage 12, and can not discharge from the junction between drilling rod 30 and the bleed device.

Alternatively, the internal diameter of the communication chamber 11 of the body portion 10 of the bleed air device is the same as the internal diameter of the drill rod 30.

It should be noted that in the present application, the number of air-entraining devices can be determined according to the depth of the drilled hole. That is, as the depth of the borehole increases, the number of bleed air devices increases. In this case, the high-pressure gas thus discharges rock dust or a mixture of water and rock dust above the bleed air device through the bleed air device above the next preceding bleed air device or out of the discharge opening.

In one embodiment of the application, one bleed air device is added for every 70 metres increase in hole depth.

In addition, the use of the air entraining device in the application is influenced by parameters such as air pressure of an air compressor, air quantity, the aperture of a drill hole, the inner diameter of the drill rod 30, an annular gap between the drill rod 30 and the hole wall and the like.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the problem that in the deep hole construction in the prior art, particularly in a shallow drilling hole with a water level, the pneumatic down-the-hole hammer drilling construction cannot be constructed is effectively solved;

2. the performance is stable, and the construction cost is reduced;

3. simple structure and easy operation.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A segmented air-entraining drilling tool system, characterized by comprising an air-entraining device and a plurality of drill rods (30), a plurality of said drill rods (30) being connected in sequence, at least two adjacent drill rods (30) being connected by said air-entraining device, said air-entraining device comprising:

the exhaust device comprises a body part (10), wherein a communication cavity (11) is formed in the body part (10), the communication cavity (11) is communicated with the top and the bottom of the body part (10) respectively, a first exhaust channel (12) is formed in the circumferential side wall of the body part (10), and two ends of the first exhaust channel (12) are communicated with the communication cavity (11) and the outer side of the body part (10) respectively;

the one-way air guide assembly (20) is arranged in the first exhaust channel (12), an air inlet of the one-way air guide assembly (20) faces the communicating cavity (11), and an air outlet of the one-way air guide assembly (20) faces the outer side of the body part (10).

2. The staged air entraining drill system according to claim 1, characterized in that the first air discharge channel (12) is straight and that the first air discharge channel (12) has an angle with the horizontal which is larger than 0 degrees and smaller than 90 degrees.

3. The staged air-entraining drill system according to claim 1, characterized in that the first exhaust channel (12) comprises a first section and a second section connected in series, the first section being adjacent to the communicating chamber (11) with respect to the second section, the first section having a smaller diameter than the second section, and the one-way air guide (20) being arranged in the first section.

4. The staged air-entraining drilling system according to claim 3, characterised in that the inner diameter of the first section is the same as the outer diameter of the one-way air guide and that the end of the one-way air guide remote from the communicating chamber (11) is flush with the end of the first section close to the second section.

5. The staged air-entraining drill system according to claim 1, characterised in that the circumferentially outer side wall of the body part (10) has a guide projection (13) extending towards the top of the body part (10), the guide projection (13) forming a second air exhaust channel (14) with the circumferentially outer side wall of the body part (10), the second air exhaust channel (14) communicating with the first air exhaust channel (12).

6. The staged air-entraining drill system according to claim 5, characterized in that the guide projection (13) comprises a first connecting section (131) and a second connecting section (132) which are connected in series and arranged at an angle, the first connecting section (131) is connected with the circumferential outer side wall of the body part (10), the connecting position of the first connecting section (131) and the circumferential outer side wall of the body part (10) is below the opening of the first exhaust channel (12) communicating with the outer side of the body part (10), and the second connecting section (132) extends towards the top of the body part (10).

7. The staged air-entraining drill system according to claim 5, characterised in that the second air-bleed channel (14) comprises a receiving section and a connecting section, which connecting section is close to the top of the body part (10) relative to the receiving section and which receiving section is located below the opening of the first air-bleed channel (12) communicating with the outside of the body part (10).

8. The staged air-entraining drill system according to any one of claims 1 to 7, characterized in that the body section (10) has tapering structures (15) at the top and bottom, respectively, in that the two tapering structures (15) converge in mutually away directions, and in that the mutually away ends of the two tapering structures (15) have a connecting plane.

9. The staged air entraining drill system according to any one of claims 1 to 7, characterized in that the inner diameter of the communication chamber (11) of the air entraining device body portion (10) is the same as the inner diameter of the drill rod (30).