Water injection faucet for core drilling machine

Abstract

The utility model relates to the field of equipment for core drilling machines, in particular to a water injection faucet for a core drilling machine. One end of the water injection faucet connector is fixedly and hermetically connected with a power head main shaft, and the corresponding other end of the water injection faucet connector is fixedly and hermetically connected with an outer connecting sleeve; central holes are formed in the outer connecting sleeve and the water injection faucet connecting body; one end of the water injection faucet body is rotatably arranged in the center holes of the water injection faucet connector and the outer connecting sleeve, and the other end of the water injection faucet body is fixedly and hermetically connected with a connecting block located on the outer side of the outer connecting sleeve and is connected with a high-pressure water pipe through the connecting block. And in the water injection or grouting process, winding of the high-pressure water pipe is avoided, and the working efficiency of the core drilling machine is improved.

Description

Technical Field

[0001] The utility model relates to the field of equipment for core drilling rigs, in particular to a water injection tap for core drilling rigs. Background Art

[0002] During the core drilling process, friction between the drill bit and the rock formation generates heat, causing the drill bit to heat up. Overheating can damage the drill bit and prevent the core drilling process from proceeding properly. To avoid this problem, water is typically injected into the drill bit during the drilling process. This water absorbs the heat and reduces the drill bit's temperature.

[0003] Generally, cooling water is introduced into the drill rod and drill bit through water pipes. However, since the drill rod and drill bit are always in a high-speed rotating state during the drilling process, the water pipes are very likely to become entangled as the drill rod and drill bit rotate at high speed. The entangled water pipes not only prevent the cooling water from being smoothly injected into the drill bit, but also hinder the normal rotation of the drill rod and drill bit, affecting the normal operation of the core drilling rig and reducing the working efficiency of the core drilling rig. Summary of the Invention

[0004] The purpose of the utility model is to overcome the above-mentioned defects of the prior art and propose a water injection tap for a core drilling rig, which will not cause entanglement of high-pressure water pipes during the water injection or grouting process, thereby improving the working efficiency of the core drilling rig.

[0005] The technical solution of the utility model is: a water injection tap for a core drilling rig, which includes:

[0006] A water filling faucet connector, one end of which is fixedly and sealedly connected to the main shaft of the power head, and the other end of which is fixedly and sealedly connected to the external connecting sleeve;

[0007] The outer connecting sleeve and the water filling tap connecting body are both provided with a central hole;

[0008] One end of the water filling faucet body is rotatably arranged in the center hole of the water filling faucet connecting body and the outer connecting sleeve, and the other end is fixedly and sealedly connected to the connecting block located outside the outer connecting sleeve and connected to the high-pressure water pipe through the connecting block.

[0009] In the present invention, the water filling faucet connector is fixedly connected to the main shaft of the power head by means of a threaded connection, and the water filling faucet connector and the main shaft of the power head are connected in a reverse thread;

[0010] The outer connecting sleeve is fixedly connected to the water filling tap connecting body by a threaded connection, and the outer connecting sleeve and the water filling tap connecting body are connected in a reverse thread;

[0011] The water filling faucet body and the connecting block are fixedly connected by a threaded connection, and the water filling faucet body and the connecting block are connected in a reverse thread;

[0012] The connecting block is connected to the high-pressure water pipe through a pair of threads. The connecting block and the pair of threads are fixedly connected through a threaded connection, and the connecting block and the pair of threads are connected in a straight thread.

[0013] Several second O-rings are provided at the end where the water filling faucet connector is connected to the main shaft of the power head. The end of the main shaft of the power head is located at the stepped shaft of the water filling faucet connector. A first O-ring is provided at the side wall of the stepped shaft of the water filling faucet connector.

[0014] A nylon sleeve, several sealing rings and a second supporting sleeve are sequentially arranged between the inner surface of the water filling faucet connecting body and the outer surface of the outer connecting sleeve and along the axial direction of the water filling faucet body.

[0015] An annular gap is provided between the outer connecting sleeve and the water filling faucet body, and an oil seal body, an anti-slip bearing, a first support sleeve and a bearing are provided in the annular gap and in sequence along the axial direction of the water filling faucet body;

[0016] The oil seal is located at one end of the annular gap facing the water filling tap connector, and the bearing is located at one end of the annular gap facing the connecting block.

[0017] A fourth O-type sealing ring is provided between the annular outer surface of the oil seal body and the inner surface of the outer connecting sleeve, and a third O-type sealing ring is provided between the annular inner surface of the oil seal body and the outer surface of the water filling faucet body;

[0018] A groove is provided on the annular outer surface of the anti-slip bearing, and a fastening glue is provided in the groove to achieve a fixed connection between the anti-slip bearing and the outer connecting sleeve.

[0019] An oil seal is provided between the inner surface of the end portion of the outer connecting sleeve facing the connecting block and the water filling faucet body.

[0020] The threaded joints, the connecting block and the water filling faucet body are all provided with through holes, and the through holes are interconnected.

[0021] An O-type sealing ring is provided at the connection between the water filling faucet body and the connecting block.

[0022] The beneficial effects of the utility model are:

[0023] (1) During the operation of the power head main shaft, the power head main shaft drives the water injection tap connector and the external connecting sleeve to rotate together, while the water injection tap body fixedly connected to the connecting block does not rotate accordingly. This ensures that the high-pressure water pipe connected to the water injection tap body will not be entangled, ensuring the normal supply of high-pressure water;

[0024] (2) Since the adjacent connecting parts in the water filling faucet are connected by reverse thread, when the main shaft of the power head rotates forward, the water filling faucet connector connected to the main shaft of the power head by reverse thread and the connecting sleeve connected to the water filling faucet connector by reverse thread will not be disassembled due to rotation. Instead, they will be tightened more and more during the rotation process, thereby ensuring the stability of the entire water filling faucet structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a first main structural diagram of the present utility model;

[0026] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0027] Figure 3 This is a second main structural diagram of the present invention;

[0028] Figure 4 yes Figure 3 AA section structure diagram in .

[0029] In the figure: 1 pair of threads; 2 connecting block; 3 water faucet body; 4 external connecting sleeve; 5 water faucet connector; 6 observation hole; 7 handle; 8 oil seal; 9 bearing; 10 first support sleeve; 11 first O-ring; 12 second O-ring; 13 nylon sleeve; 14 sealing ring; 15 second support sleeve; 16 oil seal body; 17 third O-ring; 18 fourth O-ring; 19 anti-slip bearing. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] The following description sets forth specific details to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in a variety of other ways than those described herein, and those skilled in the art may make similar generalizations without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] like Figures 1 to 4 As shown, the water injection faucet for a core drilling rig described in the present invention includes a water injection faucet body 3, an external connecting sleeve 4, and a water injection faucet connector 5. One end of the water injection faucet connector 5 is connected to the main shaft of the power head, and the other end of the water injection faucet connector 5 is fixedly connected to the external connecting sleeve 4. The water injection faucet body 3 is arranged in the center hole of the external connecting sleeve 4 and the water injection faucet connector 5, and the water injection faucet body 3 is rotatably connected to the external connecting sleeve 4 and the water injection faucet connector 5.

[0033] In the present application, one end of the water filling faucet connector 5 is fixedly connected to the power head main shaft by means of a threaded connection, and the water filling faucet connector 5 and the power head main shaft are connected in a reverse thread. The water filling faucet connector 5 and the external connection sleeve 4 are fixedly connected by means of a threaded connection, and the water filling faucet connector 5 and the external connection sleeve 4 are connected in a reverse thread. One end of the power head main shaft is connected to the water filling faucet connector 5, and the other end of the power head main shaft is connected to the drill rod. During the operation of the power head, the rotation of the power head main shaft drives the drill rod fixedly connected to the power head main shaft, as well as the external connection sleeve 4 and the water filling faucet connector 5 to rotate.

[0034] One end of the water filling faucet body 3 is arranged in the center hole of the outer connecting sleeve 4 and the water filling faucet connecting body 5. One end of the water filling faucet body 3 is located on the outside of the outer connecting sleeve 4, and this end of the water filling faucet body 3 is fixedly connected to the connecting block 2. A handle 7 is fixed on the outer surface of the connecting block 2, and the connecting block 2 is fixed at a set position by the handle 7, thereby achieving the position fixation of the connecting block 2. In the present application, the water filling faucet body 3 and the connecting block 2 are fixedly connected by a threaded connection, and the water filling faucet body 3 and the connecting block 2 are connected in a reverse thread. During the forward rotation of the power head, due to the assembly relationship, relative displacement is easily generated between the water filling faucet body 3 and the connecting block 2. The reverse thread connection between the water filling faucet body 3 and the connecting block 2 makes the connection more secure. The connecting block 2 is connected to the high-pressure water injection pipe through the thread 1. The thread 1 is fixedly connected to the connecting block 2 by a threaded connection, and the thread 1 and the connecting block 2 are connected in a positive thread.

[0035] The water injection tap body 3, the connecting block 2, and the drill bit 1 are all provided with through holes, and the through holes are interconnected. The high-pressure water in the high-pressure water injection pipe enters the water injection tap 3 through these interconnected through holes, and then enters the drill pipe through the main shaft of the power head, thereby cooling the drill pipe.

[0036] When the main shaft of the power head rotates forward, the reverse thread connection between the main shaft of the power head and the water faucet connector can make the tightening between the main shaft of the power head and the water faucet connector more secure. At the same time, when the main shaft of the power head drives the water faucet connector to rotate, the reverse thread connection between the water faucet connector and the external connecting sleeve can also make the tightening between the water faucet connector and the external connecting sleeve more secure.

[0037] To ensure a tight seal at the connection between the faucet connector 5 and the power head spindle, two second sealing rings 12 are installed at the end where the faucet connector 5 connects to the power head spindle. The end of the power head spindle is located at the stepped shaft of the faucet connector 5, where a first sealing ring 11 is installed. The second sealing rings 12 and first sealing ring 11 effectively prevent high-pressure water entering the power head spindle from leaking out of the connection between the power head spindle and the faucet connector.

[0038] A nylon sleeve 13, several sealing rings 14, and a second support sleeve 15 are arranged in sequence between the inner surface of the faucet connector 5 and the outer surface of the faucet body 3, and along the axial direction of the faucet body. The several sealing rings 14 are tightly squeezed together by the second support sleeve 15. The nylon sleeve 13 and sealing ring 14 seal the gap between the faucet connector 5 and the faucet body 3, preventing high-pressure water entering the faucet connector 5 from leaking out from the connection between the faucet connector and the faucet body. The nylon sleeve 13 is wear-resistant and provides wear protection for the sealing ring 14. It also supports the sealing ring 14 and prevents its deformation.

[0039] A certain annular gap exists between the inner surface of the outer connecting sleeve 4 and the outer surface of the faucet body 3. An oil seal 16, an anti-slip bearing 19, a first support sleeve 10, and a bearing 9 are positioned axially within this annular gap. The end of this annular gap facing the faucet connection is provided with an oil seal 16. A fourth O-ring 18 is positioned between the outer surface of the oil seal 16 and the inner surface of the outer connecting sleeve 4. A third O-ring 17 is positioned between the inner surface of the oil seal 16 and the outer surface of the faucet body 3. The oil seal 16 further prevents high-pressure water entering the faucet connector 5 from entering the annular gap between the faucet body 3 and the outer connecting sleeve 4.

[0040] The anti-slip bearing 19 is fixedly connected to the inner surface of the outer connecting sleeve 4. Its annular outer surface is provided with a serrated groove filled with a fastening adhesive, thus securing the anti-slip bearing 19 to the outer connecting sleeve 4 through adhesive bonding. A bearing 9 is located within this annular gap, on the end facing the connecting block. The anti-slip bearing 19 and the bearing 9 simultaneously support the faucet body 3, ensuring coaxiality between the outer connecting sleeve 4 and the faucet body 3. A first support sleeve 10 maintains a certain axial distance between the anti-slip bearing 19 and the bearing 9, ensuring that each can function effectively.

[0041] An oil seal 8 is provided between the inner surface of the end of the outer connecting sleeve 4 facing the connecting block and the water filling faucet 3. If the seal between the connecting block 2 and the water filling faucet body 3 is not tight, causing high-pressure water to flow out, the oil seal 8 can effectively prevent the high-pressure water from entering the cavity of the water filling faucet connecting body through the annular gap between the outer connecting sleeve 4 and the water filling faucet body 3.

[0042] Several observation holes 6 can be provided on the outer connecting sleeve 4. When water leaks from the observation holes 6, it indicates that the sealing component in the water filling faucet is damaged. In this case, the machine needs to be shut down and the sealing component needs to be replaced.

[0043] An O-ring is provided between the connecting block 2 and the faucet body 3 to prevent water leakage at the threaded connection between the connecting block and the faucet body. The connecting block also serves to secure the faucet body 3, ensuring that the faucet body does not rotate during operation.

[0044] During the operation of the water filling faucet, one end of the water filling faucet body 3 is connected to the high-pressure water pipe through the connecting block 2 and the thread 1, and one end of the water filling faucet connector 5 is fixedly connected to the main shaft of the power head. When the power head is working, the main shaft of the power head moves, driving the water filling faucet connector 5 to rotate. At this time, the external connecting sleeve 4 fixedly connected to the water filling faucet connector 5 also rotates with the main shaft of the power head; at the same time, the water filling faucet body 3 located inside the water filling faucet connector 5 and the external connecting sleeve 4 does not rotate. This structure will not cause the high-pressure water pipe connected to the water filling faucet body 3 to be entangled. Since corresponding sealing structures are provided at the connection parts of the water filling faucet body 3, the external connecting sleeve 4, and the water filling faucet connector 5, it can be ensured that high-pressure water will not seep out from the various connections of the water filling faucet, effectively preventing the occurrence of water leakage of the water filling faucet.

[0045] When the drill rod and the drill bit need to be cooled, cooling water is injected into the drill rod and the drill bit through the high-pressure water pipe and the water injection tap to cool the drill rod and the drill bit.

[0046] During the process of drilling the core with the drill bit, fracture zones and cracks are easily generated in the rock formation. At this time, the water injection tap can also be used to inject grout into the cracks to complete the grouting and plugging of the hole. At this time, one end of the water injection tap 3 is connected to the grouting pipe through the connecting block 2 and the thread 1. The slurry is injected into the probe rod and the drill bit through the grouting pipe and the water injection tap to achieve grouting and plugging of the cracks.

[0047] The above is a detailed introduction to the water injection tap for core drilling rigs provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention. The above description of the disclosed embodiments enables professionals in this field to implement or use the present invention. Various modifications to these embodiments will be obvious to professionals in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water injection tap for a core drilling rig, characterized in that: include: A water filling faucet connector, one end of which is fixedly and sealedly connected to the main shaft of the power head, and the other end of which is fixedly and sealedly connected to the external connecting sleeve; The outer connecting sleeve and the water filling tap connecting body are both provided with a central hole; One end of the water filling faucet body is rotatably arranged in the center hole of the water filling faucet connecting body and the outer connecting sleeve, and the other end is fixedly and sealedly connected to the connecting block located outside the outer connecting sleeve and connected to the high-pressure water pipe through the connecting block.

2. The water injection tap for a core drilling rig according to claim 1, characterized in that: The water filling faucet connector is fixedly connected to the main shaft of the power head by means of a threaded connection, and the water filling faucet connector and the main shaft of the power head are connected in a reverse thread; The outer connecting sleeve is fixedly connected to the water filling tap connecting body by a threaded connection, and the outer connecting sleeve and the water filling tap connecting body are connected in a reverse thread; The water filling faucet body and the connecting block are fixedly connected by a threaded connection, and the water filling faucet body and the connecting block are connected in a reverse thread manner; The connecting block is connected to the high-pressure water pipe through a pair of threads. The connecting block and the pair of threads are fixedly connected through a threaded connection, and the connecting block and the pair of threads are connected in a straight thread.

3. The water injection tap for a core drilling rig according to claim 1, characterized in that: Several second O-rings are provided at the end where the water filling faucet connector is connected to the main shaft of the power head. The end of the main shaft of the power head is located at the stepped shaft of the water filling faucet connector. A first O-ring is provided at the side wall of the stepped shaft of the water filling faucet connector.

4. The water injection tap for a core drilling rig according to claim 1, characterized in that: A nylon sleeve, several sealing rings and a second supporting sleeve are sequentially arranged between the inner surface of the water filling faucet connecting body and the outer surface of the outer connecting sleeve and along the axial direction of the water filling faucet body.

5. The water injection tap for a core drilling rig according to claim 1, characterized in that: An annular gap is provided between the outer connecting sleeve and the water filling faucet body, and an oil seal body, an anti-slip bearing, a first support sleeve and a bearing are provided in the annular gap and in sequence along the axial direction of the water filling faucet body; The oil seal is located at one end of the annular gap facing the water filling tap connector, and the bearing is located at one end of the annular gap facing the connecting block.

6. The water injection tap for a core drilling rig according to claim 5, characterized in that: A fourth O-type sealing ring is provided between the annular outer surface of the oil seal body and the inner surface of the outer connecting sleeve, and a third O-type sealing ring is provided between the annular inner surface of the oil seal body and the outer surface of the water filling faucet body; A groove is provided on the annular outer surface of the anti-slip bearing, and a fastening glue is provided in the groove to achieve a fixed connection between the anti-slip bearing and the outer connecting sleeve.

7. The water injection tap for a core drilling rig according to claim 1, characterized in that: An oil seal is provided between the inner surface of the end portion of the outer connecting sleeve facing the connecting block and the water filling faucet body.

8. The water injection tap for a core drilling rig according to claim 2, characterized in that: The threaded joints, the connecting block and the water filling faucet body are all provided with through holes, and the through holes are interconnected.

9. The water injection tap for a core drilling rig according to claim 1, characterized in that: An O-type sealing ring is provided at the connection between the water filling faucet body and the connecting block.

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