Nozzle device and drill rod with same

Abstract

The utility model discloses a nozzle device and a drill rod with the same. The nozzle device comprises a drill rod body (10), the nozzle assembly (20) is pivotally arranged on the drill rod body (10) in a sleeving manner, the nozzle assembly (20) communicates with the drill rod body (10), and a balancing weight (21) is arranged on the nozzle assembly (20), so that the nozzle assembly (20) can always keep the position where the balancing weight (21) is arranged at the lower end part of the drill rod body (10); the nozzle assembly (20) is provided with a nozzle (22) communicated with the drill rod body (10). According to the device, after the nozzle assembly (20) enters a drill hole along with the drill rod body (10), even if the position of the drill rod rotates, the position of the nozzle (22) can be kept unchanged all the time, and the accuracy and reliability of the high-pressure jet flow direction are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine drill pipe equipment, and in particular to a nozzle device for drill pipes. Background Technology

[0002] In the existing technology, the fixed connection between the nozzle and the drill rod in coal mines requires a directional mark to be made on the drill rod before the drill rod is inserted into the borehole in the coal mine when it is necessary to directionally spray through the high-pressure jet nozzle. However, due to the fixed connection structure between the drill rod and the nozzle, it is difficult to ensure that the direction of the nozzle spray is the target direction. In other words, a slight change in the direction of the drill rod in the borehole will change the spray direction of the nozzle, causing a deviation in the direction of the high-pressure jet. Summary of the Invention

[0003] This solution addresses the problems and needs raised above by proposing a nozzle device that achieves the aforementioned technical objectives and brings about several other technical benefits due to the adoption of the following technical features.

[0004] One object of this utility model is to provide a nozzle device, comprising:

[0005] Drill pipe body;

[0006] A nozzle assembly is pivotally mounted on the drill pipe body and is connected to the drill pipe body. The nozzle assembly is provided with a counterweight so that the position of the nozzle assembly can always be maintained when the position of the counterweight is located at the lower end of the drill pipe body. The nozzle assembly has a nozzle that is connected to the drill pipe body.

[0007] The nozzle is pre-set to spray at the desired position. The drill rod body with the nozzle assembly is extended from the inlet end of the borehole into the borehole along the borehole's extension direction. During the installation of the drill rod body, the nozzle assembly rotates circumferentially along the drill rod body under the influence of the borehole's inner wall. Once the nozzle assembly reaches the designated position, it remains in position when the counterweight is at the lower end of the drill rod body, thanks to the weight of the counterweight. High-pressure water from inside the drill rod body then flows through the nozzle assembly and sprays onto the designated borehole position. This nozzle device can consistently and accurately maintain the nozzle assembly's spray position, resulting in more precise spraying. Furthermore, this nozzle device has a simple structure, is easy to manufacture, and has high reliability.

[0008] In addition, the nozzle device according to this utility model may also have the following technical features:

[0009] In one example of this utility model, the nozzles include a plurality of nozzles and are spaced apart along the circumferential direction of the nozzle assembly. When it is necessary to specify the spray direction of the nozzle assembly, the lower end of the counterweight block of the nozzle assembly is taken as the starting position, and the nozzles that form a specified angle with the starting lower end are specified and opened.

[0010] In one example of this invention, the nozzle extends from the outer edge of the nozzle assembly along the radial direction of the nozzle assembly toward a direction away from the nozzle assembly; wherein, the spray cavity formed inside the nozzle gradually decreases in size from the end near the nozzle assembly toward the end away from the nozzle assembly.

[0011] In one example of this invention, the nozzle is detachably connected to the nozzle assembly.

[0012] In one example of this utility model,

[0013] Of the nozzle and the nozzle assembly, one is provided with a connector, and the other is provided with a connector groove, wherein the connector is inserted into the connector groove.

[0014] And / or, of the nozzle and the nozzle assembly, one is provided with a connecting portion, and the other is provided with a connecting hole. An external thread is formed on the outer wall of the connecting portion, and an internal thread is formed on the inner wall of the connecting hole. The connecting portion is engaged with the connecting hole.

[0015] In one example of this utility model, the nozzle assembly includes:

[0016] The main body has an axially formed mounting cavity communicating with the drill pipe body and a circumferentially formed receiving cavity, wherein the receiving cavity is connected to the mounting cavity and the receiving cavity is connected to the nozzle; wherein the counterweight is fixedly connected to the main body at any position in the circumferential direction, such that when the drill pipe body is in a horizontal position, the position of the counterweight on the main body is always at the lower end of the drill pipe body.

[0017] In one example of this utility model, the receiving cavity is an annular cavity, a connecting hole communicating with the mounting cavity is provided on the receiving cavity, and a drill rod hole corresponding to the connecting hole is provided on the drill rod body.

[0018] In one example of this invention, the nozzle assembly is detachably connected to the drill pipe body, and the nozzle assembly and the drill pipe body are sealed together.

[0019] In one example of this utility model, the drill rod body and the nozzle assembly are connected by a bearing, wherein the inner ring of the bearing is fixedly connected to the drill rod body, the outer ring of the bearing is fixedly connected to the nozzle assembly, and a sealing ring is provided between the drill rod body and the nozzle assembly to seal the gap between the drill rod body and the nozzle assembly.

[0020] Another object of this invention is to provide a drill rod comprising a nozzle device as described in any of the above.

[0021] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. The drawings are merely illustrative of some embodiments of this utility model and are not intended to limit the scope of all embodiments of this utility model.

[0023] Figure 1 This is a schematic diagram of the nozzle device according to an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of the nozzle device according to an embodiment of the present invention at the nozzle.

[0025] List of reference numerals in the attached diagram:

[0026] Nozzle device 100;

[0027] Drill pipe body 10;

[0028] Drill rod hole 11;

[0029] Nozzle assembly 20;

[0030] Counterweight 21;

[0031] Nozzle 22;

[0032] Spray chamber 221;

[0033] Body part 23;

[0034] Mounting cavity 231;

[0035] Receiving cavity 232;

[0036] Connecting hole 233;

[0037] Connecting housing 24;

[0038] Bearing 30;

[0039] Sealing ring 40. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0041] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0042] A nozzle device 100 according to a first aspect of the present invention includes:

[0043] Drill pipe body 10;

[0044] A nozzle assembly 20 is pivotally mounted on the drill pipe body 10 and is connected to the drill pipe body 10. A counterweight 21 is provided on the nozzle assembly 20 so that the position of the nozzle assembly 20 can always be maintained when the counterweight 21 is located at the lower end of the drill pipe body 10. The nozzle assembly 20 has a nozzle 22 that is connected to the drill pipe body 10.

[0045] The working principle of the nozzle device 100 is as follows:

[0046] The nozzle 22 is pre-set to spray at a predetermined position. The drill rod body 10, with the nozzle assembly 20 installed, extends from the inlet end of the borehole into the borehole along the extension direction of the borehole. During the process of installing the drill rod body 10, the nozzle assembly 20 rotates along the circumferential direction of the drill rod body 10 under the influence of the inner wall of the borehole. Once the nozzle assembly 20 moves to the designated position, under the action of the weight 21, the nozzle assembly 20 can always maintain the position of the nozzle assembly 20 when the weight 21 is located at the lower end of the drill rod body 10. Then, the high-pressure water source inside the drill rod body 10 flows through the nozzle assembly 20 and is sprayed by the nozzle 22 to the designated borehole position. This nozzle device 100 can always accurately maintain the spray position of the nozzle assembly 20, making the spray hole more precise. Moreover, the nozzle device 100 has a simple structure, is easy to manufacture, and has high reliability.

[0047] In one example of this utility model, the nozzle 22 includes a plurality of nozzles and is spaced apart along the circumferential direction of the nozzle assembly 20. When it is necessary to specify the spray direction of the nozzle assembly 20, the lower end of the counterweight block 21 of the nozzle assembly 20 is taken as the starting position, and the nozzle 22 with a specified angle to the starting lower end is specified and opened.

[0048] In other words, when it is necessary to open one of the multiple nozzles 22, it is only necessary to open the nozzle 22 that is at a specified angle to the counterweight 21, with the lower end of the counterweight 21 as the starting position. This is because no matter how the position of the nozzle assembly 20 is adjusted relative to the drill rod body 10, once the position of the drill rod body 10 in the borehole is determined, the nozzle assembly 20 will automatically adjust to the lower end of the drill rod body 10 under the gravity of the counterweight 21. After opening the nozzle 22 at the specified angle, the specified position in the borehole can be sprayed. By setting multiple nozzles 22, the spraying at the specified position in the borehole can be controlled by opening one of the multiple nozzles 22, which greatly improves the flexibility of the nozzle device 100.

[0049] In one example of this utility model, the nozzle 22 extends from the outer edge of the nozzle assembly 20 along the radial direction of the nozzle assembly 20 in a direction away from the nozzle assembly 20; wherein, the inner diameter of the spray cavity 221 formed inside the nozzle 22 gradually decreases from the end near the nozzle assembly 20 to the end away from the nozzle assembly 20.

[0050] In short, the nozzle 22 protrudes from the outer edge of the nozzle assembly 20, thereby guiding the high-pressure water source inside the nozzle assembly 20 to spray in a specified direction in the borehole; and by gradually decreasing the inner diameter of the spray chamber 221 inside the nozzle 22 from the end near the nozzle assembly 20 to the end away from the nozzle assembly 20, the spray pressure of the nozzle 22 can be increased, thereby improving the spraying effect.

[0051] In one example of this utility model, the nozzle 22 is detachably connected to the nozzle assembly 20; by detachably connecting the nozzle 22 to the nozzle assembly 20, it is convenient to disassemble and replace the nozzle 22, and facilitates later maintenance and repair.

[0052] In one example of this utility model,

[0053] Of the nozzle 22 and the nozzle assembly 20, one is provided with a connector and the other is provided with a connector groove, and the connector is inserted into the connector groove accordingly.

[0054] And / or, of the nozzle 22 and the nozzle assembly 20, one is provided with a connecting portion, and the other is provided with a connecting hole. An external thread is formed on the outer wall of the connecting portion, and an internal thread is formed on the inner wall of the connecting hole. The connecting portion is engaged with the connecting hole.

[0055] For example, the nozzle 22 and the nozzle assembly 20 are connected by a plug-in connection, that is, the nozzle 22 is provided with a plug-in part, and the nozzle assembly 20 is provided with a plug-in groove that matches the plug-in part; or the nozzle 22 is provided with a plug-in groove, and the nozzle assembly 20 is provided with a plug-in part that matches the plug-in groove.

[0056] For example, the nozzle 22 and the nozzle assembly 20 are connected by a threaded connection, that is, the nozzle 22 is provided with a connecting part, the nozzle assembly 20 is provided with a connecting hole, the outer wall of the connecting part is formed with an external thread, the inner wall of the connecting hole is formed with an internal thread, and the connecting part is fitted into the connecting hole; or the nozzle assembly 20 is provided with a connecting part, the nozzle 22 is provided with a connecting hole, the outer wall of the connecting part is formed with an external thread, the inner wall of the connecting hole is formed with an internal thread, and the connecting part is fitted into the connecting hole.

[0057] The above two detachable connection methods facilitate the detachable connection between the nozzle 22 and the nozzle assembly 20, thereby making it easier to disassemble, install, replace, and repair the nozzle 22.

[0058] In one example of this utility model, the nozzle assembly 20 includes:

[0059] The main body 23 has an axially formed mounting cavity 231 that communicates with the drill pipe body 10 and a circumferentially formed receiving cavity 232, wherein the receiving cavity 232 communicates with the mounting cavity 231 and the receiving cavity communicates with the nozzle 22; wherein the counterweight 21 is fixedly connected to the main body 23 at any position in the circumferential direction, such that when the drill pipe body 10 is in a horizontal position, the position of the counterweight 21 on the main body 23 is always at the lower end of the drill pipe body 10.

[0060] Specifically, the mounting cavity 231 is used to be fitted onto the drill pipe body 10 and connected to the drill pipe body 10, while the receiving cavity 232 is used to store the high-pressure water source discharged from the drill pipe body 10. When the nozzle assembly 20 returns to its initial position under its own gravity, the receiving cavity 232 is connected to the mounting cavity 231. The high-pressure water flows out of the drill pipe body 10 and flows through the mounting cavity 231 and the receiving cavity 232 in sequence, and is sprayed out through the nozzle 22 from the receiving cavity 232. By setting the receiving cavity 232, a storage space can be provided for the high-pressure water sprayed by the nozzle assembly 20, thereby ensuring that the nozzle assembly 20 can continuously and effectively spray high-pressure water into the borehole.

[0061] In one example of this utility model, the receiving cavity 232 is an annular cavity, and a connecting hole 233 communicating with the mounting cavity 231 is provided on the receiving cavity 232. A drill rod hole 11 corresponding to the connecting hole 233 is provided on the drill rod body 10.

[0062] In other words, the drill rod body 10 and the mounting cavity 231 are connected through the drill rod hole 11, and the receiving cavity 232 and the mounting cavity 231 are connected through the connecting hole 233. When high-pressure water rushes into the drill rod body 10, it enters the mounting cavity 231 through the drill rod hole 11, and then enters the receiving cavity 232 through the connecting hole 233. Finally, it flows from the receiving cavity 232 to the nozzle 22 and is sprayed onto the designated position of the drill hole. By designing the mounting cavity 231 and the receiving cavity 232 as annular cavities, even if there is relative rotation between the nozzle assembly 20 and the drill rod body 10, the high-pressure water in the drill rod body 10 can still enter the receiving cavity 232 through the mounting cavity 231. That is, the high-pressure water will flow into the mounting cavity 231 through the drill rod hole 11 of the drill rod body 10, and then enter the receiving cavity 232 through the connecting hole 233. The high-pressure water will not be affected by the relative rotation between the nozzle assembly 20 and the drill rod body 10.

[0063] It is understandable that during the machining process, the mounting cavity 231 can be installed by opening a through hole at the center position in the axial direction; while when machining the receiving cavity 232, for the convenience of machining, at least one of its two ends is connected to the outside, for example, one end is open, and after machining is completed, the receiving cavity 232 is sealed by setting an end cap.

[0064] In one example of this utility model, the central axes of the receiving cavity 232 and the mounting cavity 231 are not coaxial, and the central axis of the receiving cavity 232 is offset from the side of the body part 23 where the counterweight block 21 is provided;

[0065] In other words, the volume of the receiving cavity 232 on the side closer to the counterweight 21 of the main body 23 is larger than that on the side farther away from the counterweight 21 of the main body 23. This allows the high-pressure water to flow out of the drill rod body 10 and enter the receiving cavity 232 through the connecting hole 233 when high-pressure water is sprayed. Since the larger receiving cavity 232 is located on one side of the configuration block, i.e. the lower end, the high-pressure water will converge on the receiving cavity 232 on the side where the configuration block is located, thereby further increasing the gravity on the side where the configuration block is located. This allows the nozzle assembly 20 to always adaptively maintain the position where the configuration block is located at the lower end of the drill rod body 10.

[0066] In one example of this utility model, the nozzle assembly 20 is detachably connected to the drill rod body 10, and the nozzle assembly 20 and the drill rod body 10 are sealed together; by designing the nozzle assembly 20 and the drill rod body 10 as a detachable structure, the nozzle assembly 20 can be easily disassembled and replaced.

[0067] In one example of this utility model, the drill rod body 10 and the nozzle assembly 20 are connected by a bearing 30, wherein the inner ring of the bearing 30 is fixedly connected to the drill rod body 10, the outer ring of the bearing 30 is fixedly connected to the nozzle assembly 20, and a sealing ring 40 is provided between the drill rod body 10 and the nozzle assembly 20 to seal the gap between the drill rod body 10 and the nozzle assembly 20.

[0068] In other words, the drill pipe body 10 is adapted to the mounting cavity 231 of the nozzle assembly 20, and the bearing 30 is located between the mounting cavity 31 and the drill pipe body 10. By setting the bearing, the nozzle assembly 20 can be supported, and the relative movement between the nozzle assembly 20 and the drill pipe body 10 can also be realized. Preferably, bearings 30 are set at both ends of the nozzle assembly 20. In order to ensure the sealing of the mounting cavity 231, sealing rings 40 are respectively set on the inner end side of the bearings 30 at both ends to ensure that high-pressure water is kept in the mounting cavity 231.

[0069] By setting the bearing 30, a relative rotational connection can be achieved between the drill rod body 10 and the nozzle assembly 20, while the sealing ring 40 can effectively seal the gap between the drill rod body 10 and the mounting cavity 231, ensuring that high-pressure water does not leak in the mounting cavity 231.

[0070] In one example of this utility model, connecting housings 24 are formed at both ends of the nozzle assembly 20. The connecting housings 24 are sleeved on the outside of the drill rod body 10, and the bearings 30 are connected between the connecting housings 24 and the drill rod body 10.

[0071] That is, the connecting housing 24 extends axially from the mounting cavity 231 in a direction away from the mounting cavity 231, and the mounting cavity 231 is connected to the connecting housing 24, both of which are used to install the drill rod body 10; preferably, the inner diameter of the connecting housing 24 at the position where the bearing 30 is installed is larger than the inner diameter of the mounting cavity 231, so that the bearing 30 can be easily connected between the connecting housing 24 and the drill rod body 10.

[0072] A drill pipe according to a second aspect of the present invention includes a nozzle device 100 as described in any of the preceding claims.

[0073] When using this drill rod, the position to be sprayed by the nozzle 22 is preset. The drill rod body 10 with the nozzle assembly 20 installed is extended from the inlet end of the borehole into the borehole along the extension direction of the borehole. During the process of the drill rod body 10 being installed, the nozzle assembly 20 will rotate along the circumferential direction of the drill rod body 10 under the influence of the inner wall of the borehole. Once the nozzle assembly 20 moves to the designated position, under the action of the weight of the counterweight 21, the nozzle assembly 20 can always be maintained at the position of the nozzle assembly 20 when the position of the counterweight 21 is at the lower end of the drill rod body 10. Then, the high-pressure water source inside the drill rod body 10 flows through the nozzle assembly 20 and is sprayed by the nozzle 22 to the designated borehole position. This drill rod can always accurately maintain the spray position of the nozzle assembly 20, making the spray more precise. Moreover, the nozzle device 100 has a simple mechanism and high reliability.

[0074] The exemplary embodiments of the nozzle device 100 proposed by the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention, which is determined by the appended claims.

Claims

1. A nozzle device, characterized by include: Drill pipe body (10); A nozzle assembly (20) is pivotally mounted on the drill pipe body (10) and is connected to the drill pipe body (10). A counterweight (21) is provided on the nozzle assembly (20) so that the position of the nozzle assembly (20) can always be maintained when the position of the counterweight (21) is located at the lower end of the drill pipe body (10). The nozzle assembly (20) is provided with a nozzle (22) that is connected to the drill pipe body (10).

2. The nozzle device according to claim 1, characterized in that, The nozzles (22) include a plurality of nozzles and are spaced apart along the circumferential direction of the nozzle assembly (20). When it is necessary to specify the spray direction of the nozzle assembly (20), the lower end of the counterweight block (21) of the nozzle assembly (20) is taken as the starting position, and the nozzle (22) is specified and opened at a specified angle with the starting lower end.

3. The nozzle device according to claim 2, characterized in that, The nozzle (22) extends from the outer edge of the nozzle assembly (20) along the radial direction of the nozzle assembly (20) toward the direction away from the nozzle assembly (20); wherein the spray cavity (221) formed inside the nozzle (22) gradually decreases in size from one end near the nozzle assembly (20) toward the end away from the nozzle assembly (20).

4. The nozzle device according to claim 2, characterized in that, The nozzle (22) is detachably connected to the nozzle assembly (20).

5. The nozzle device according to claim 4, characterized in that, Of the nozzle (22) and the nozzle assembly (20), one is provided with a connector and the other is provided with a connector groove, and the connector is inserted into the connector groove accordingly; And / or, of the nozzle (22) and the nozzle assembly (20), one is provided with a connecting part, and the other is provided with a connecting hole. An external thread is formed on the outer wall of the connecting part, and an internal thread is formed on the inner wall of the connecting hole. The connecting part is engaged with the connecting hole.

6. The nozzle device according to claim 1, characterized in that, The nozzle assembly (20) includes: The main body (23) has an axially formed mounting cavity (231) communicating with the drill rod body (10) and a circumferentially formed receiving cavity (232), wherein the receiving cavity (232) is connected to the mounting cavity (231) and the receiving cavity (232) is connected to the nozzle (22); wherein the counterweight (21) is fixedly connected to the main body (23) at any position in the circumferential direction, such that when the drill rod body (10) is in a horizontal position, the position of the counterweight (21) on the main body (23) is always at the lower end of the drill rod body (10).

7. The nozzle device according to claim 6, characterized in that, The receiving cavity (232) is an annular cavity, and a connecting hole (233) communicating with the mounting cavity (231) is provided on the receiving cavity (232). A drill rod hole (11) corresponding to the connecting hole (233) is provided on the drill rod body (10).

8. The nozzle device according to claim 1, characterized in that, The nozzle assembly (20) is detachably connected to the drill pipe body (10), and the nozzle assembly (20) is sealed to the drill pipe body (10).

9. The nozzle device according to claim 8, characterized in that, The drill rod body (10) and the nozzle assembly (20) are connected by a bearing (30), wherein the inner ring of the bearing (30) is fixedly connected to the drill rod body (10), the outer ring of the bearing (30) is fixedly connected to the nozzle assembly (20), and a sealing ring (40) is provided between the drill rod body (10) and the nozzle assembly (20) to seal the gap between the drill rod body (10) and the nozzle assembly (20).

10. A drill pipe characterized by, Includes the nozzle device (100) as described in any one of claims 1 to 9.

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