Water supply system of diamond bit

Abstract

The utility model belongs to the technical field of drilling equipment, and discloses a water supply system of a diamond drill bit, which comprises a sleeve, a water supply pipe and a water supply pipe, the water inlet pipe is fixed to the side wall of the middle section of the sleeve, the water inlet pipe is in through connection with the interior of the sleeve, and a switch valve is arranged on the water inlet pipe; the connecting shaft is rotationally connected to the inner side of the sleeve, the two ends of the connecting shaft extend to the outer side of the sleeve, a water injection channel coaxially arranged is formed in one end of the connecting shaft, and a first circular through hole is formed in the peripheral wall, close to the water inlet pipe, of the connecting shaft and is in through connection with the water inlet pipe; continuous water injection cooling is conducted on the drill bit in the drilling process, meanwhile, dust generated during drilling is cleaned, the service life of the drill bit is prolonged, and the drilling efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of drilling equipment, and in particular relates to a water supply system for a diamond drill bit. Background Art

[0002] In underground coal mining and other operations, the use of diamond drill bits for drilling operations before rock blasting often encounters harsh conditions, such as small and enclosed spaces, high temperature climates, and hard rocks, which cause the heat generated by the friction of the drill bit to be difficult to dissipate, reducing the life of the drill bit and work efficiency. For this reason, it is usually necessary to cool the drill bit during the drilling process. The methods used in the prior art include manual water splashing and intermittent water immersion cooling, but these methods have problems: manual water splashing is labor-intensive and has poor cooling effect, while intermittent water immersion cooling affects the continuity and efficiency of the drilling operation. Therefore, there is a problem in the existing technology that it is not convenient to continuously supply water to cool the drill bit during drilling work. Utility Model Content

[0003] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a water supply system for a diamond drill bit, which solves the problem in the prior art that it is inconvenient to continuously supply water to cool the drill bit during drilling work.

[0004] The purpose of this disclosure can be achieved through the following technical solutions:

[0005] The water supply system of diamond drill bit includes:

[0006] A sleeve, both ends of the sleeve are open;

[0007] A water inlet pipe is fixed on the side wall of the middle section of the sleeve, the water inlet pipe is connected to the inside of the sleeve, and a switch valve is arranged on the water inlet pipe;

[0008] A connecting shaft is rotatably connected to the inner side of the sleeve, both ends of the connecting shaft extend to the outer side of the sleeve, one end of the connecting shaft is provided with a water injection channel placed coaxially, a first circular through hole is provided on the peripheral wall of the connecting shaft near the water inlet pipe, and the first circular through hole is connected with the water inlet pipe.

[0009] The principle and effect of the above technical solution are as follows:

[0010] Before use, a connecting drill bit is installed at one end of the connecting shaft close to the water injection channel. The drill bit is a hollow drill bit with a cavity for water to pass through. After the drill bit and the connecting shaft are installed, the drill cavity and the water injection channel are connected through; the other end of the connecting shaft is connected to a driving source, and the driving source can be a rotating motor, and the output shaft of the rotating motor is connected to the connecting shaft;

[0011] During the drilling operation, the rotating motor is turned on to drive the connecting shaft and the drill bit to rotate, and at the same time, the switch valve on the water inlet pipe is opened to inject water. The water in the water inlet pipe passes through the first round hole into the interior of the connecting shaft and flows along the water injection channel to the drill bit end. Finally, the water inside the connecting shaft is discharged from the drill bit away from the connecting shaft end, so that the drill bit is cooled by water injection during the drilling process, and the dust generated by drilling is cleaned at the same time, so as to extend the life of the drill bit and improve the drilling efficiency.

[0012] Both ends of the sleeve are provided with rolling bearings placed coaxially, the inner side walls of the inner rings of the rolling bearings are fixed to the connecting shaft, and the outer side walls of the outer rings of the rolling bearings are fixed to the inner wall of the sleeve;

[0013] There are multiple first circular through holes, and the multiple first circular through holes are evenly distributed in a ring shape around the central axis of the connecting shaft;

[0014] A coaxially placed annular block is fixed on the inner side of the sleeve. The annular block is located between two rolling bearings. The annular block is sleeved on the connecting shaft and is rotatably connected thereto. The first circular through holes are all located between the upper end face and the lower end face of the annular block. A second circular through hole is opened on the peripheral wall of the annular block close to the water inlet pipe. The second circular through hole is coaxially placed with the water inlet pipe. When any of the first circular through holes is rotated to face the water inlet pipe, the first circular through hole, the second circular through hole and the water inlet pipe are connected through and through.

[0015] The water tightness between the outer wall of the ring block and the inner wall of the sleeve is good, and the water tightness between the inner wall of the ring block and the outer wall of the connecting shaft is good;

[0016] An external thread is provided on the outer peripheral wall of the end of the connecting shaft where the water injection channel is provided;

[0017] A plug-in hole is provided at the end of the connecting shaft away from the external thread and is coaxially arranged with the connecting shaft, and a thread groove is provided on the inner wall of the plug-in hole;

[0018] The diameter of the plug hole gradually increases from the end close to the external thread to the end far away from the external thread.

[0019] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0020] Fixed connection: refers to the process of firmly connecting two or more parts, components or equipment together by means of bolts, welding, adhesives, clamps, etc., so that they will not accidentally separate or move during use.

[0021] Rotational connection: Two objects are in contact but not fixed, and can rotate relative to each other.

[0022] Beneficial effects of the present disclosure:

[0023] 1. Through the coordinated arrangement of the sleeve, the water inlet pipe, the switch valve, the connecting shaft, the water injection channel, and the first round through hole, the drill bit can be continuously cooled by water injection during the drilling process, and the dust generated by the drilling can be cleaned at the same time, so as to extend the life of the drill bit and improve the drilling efficiency;

[0024] 2. The setting of the rolling bearing makes the rotation of the connecting shaft smoother and improves the stability of the connection of the connecting shaft. At the same time, the matching setting of the circular ring block and the second round through hole can seal the first round through hole that is not connected to the water inlet pipe, and prevent water from leaking out and flowing into the rolling bearing to cause rust. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present disclosure;

[0027] Figure 2 is a partial structural schematic diagram of an embodiment of the present disclosure;

[0028] Figure 3 It is a partial structural schematic diagram of a circular ring block of an embodiment of the present disclosure;

[0029] Figure 4 It is a partial structural schematic diagram of the connecting shaft of an embodiment of the present disclosure;

[0030] Figure 5 It is a schematic diagram of the prism structure of an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0032] Combined with this Figures 1 to 5 The present invention will now describe an embodiment of a water supply system for a diamond drill bit. Specifically, the water supply system for the diamond drill bit is constructed as a split structure, which includes three components: a sleeve 100, a water inlet pipe 200, and a connecting shaft 300, so as to achieve continuous water injection cooling of the drill bit during the drilling process, and clean the dust generated by the drilling at the same time, so as to extend the life of the drill bit and improve the drilling efficiency.

[0033] Please refer to Figures 1 to 5 , a water supply system for a diamond drill bit, comprising:

[0034] A sleeve 100, both ends of the sleeve 100 are open;

[0035] A water inlet pipe 200, which is fixed to the side wall of the middle section of the sleeve 100, and is connected to the inside of the sleeve 100, and a switch valve 201 is provided on the water inlet pipe 200;

[0036] The connecting shaft 300 is rotatably connected to the inner side of the sleeve 100. Both ends of the connecting shaft 300 extend to the outer side of the sleeve 100. A water injection channel 301 is coaxially arranged at one end of the connecting shaft 300. A first circular through hole 302 is arranged on the peripheral wall of the connecting shaft 300 near the water inlet pipe 200. The first circular through hole 302 is throughly connected to the water inlet pipe 200.

[0037] The sleeve 100 is in the shape of a hollow cylinder and can be made of aluminum alloy or stainless steel, and its surface is specially treated to improve corrosion resistance and wear resistance. At the same time, the sleeve 100 needs to be light and strong, and suitable for high-demand working environments.

[0038] The water inlet pipe 200 is made of corrosion-resistant stainless steel material, and the inside of the water inlet pipe 200 is smoothed to reduce fluid resistance and improve water supply efficiency. When in use, the end of the water inlet pipe 200 away from the sleeve 100 can be connected to an external pipe, and the other end of the external pipe is connected to a water pump.

[0039] The connecting shaft 300 can be made of stainless steel. Stainless steel also has high strength and hardness, can withstand high-load working conditions, and maintain the stability and durability of the connecting shaft. In addition, stainless steel has good chemical stability and can resist the erosion of most corrosive media, ensuring the long-term reliable operation of the connecting shaft 300 in harsh environments.

[0040] Before use, a connecting drill bit is installed at one end of the connecting shaft 300 close to the water injection channel 301. The drill bit is a hollow drill bit with a cavity for water to pass through. After the drill bit and the connecting shaft 300 are installed, the drill bit cavity is connected to the water injection channel 301 through-connected; the other end of the connecting shaft 300 is connected to a driving source. The driving source can be a rotating motor, and the output shaft of the rotating motor is connected to the connecting shaft 300;

[0041] During drilling operation, the rotating motor is turned on to drive the connecting shaft 300 and the drill bit to rotate, and at the same time, the switch valve 201 on the water inlet pipe 200 is opened to inject water. The water in the water inlet pipe 200 passes through the first round hole 302 into the interior of the connecting shaft 300, and flows along the water injection channel 301 to the drill bit end. Finally, the water in the connecting shaft 300 is discharged from the end of the drill bit away from the connecting shaft 300, so that the drill bit is continuously cooled by water injection during the drilling process, and the dust generated by drilling is cleaned at the same time, so as to extend the life of the drill bit and improve the drilling efficiency.

[0042] In order to facilitate the rotation of the connecting shaft 300, coaxially placed rolling bearings 400 are provided at both ends of the sleeve 100, the inner wall of the inner ring of the rolling bearing 400 is fixed to the connecting shaft 300, and the outer wall of the outer ring of the rolling bearing 400 is fixed to the inner wall of the sleeve 100; by setting the rolling bearing 400, the friction during the rotation of the connecting shaft 300 is reduced, the rotation of the connecting shaft 300 is made smoother, and at the same time, the stability of the connection of the connecting shaft 300 is improved.

[0043] In order to facilitate the rapid entry of water in the water inlet pipe 200 into the connecting shaft 300 and ensure a sufficient water inlet rate in the connecting shaft 300, a plurality of first circular through holes 302 are provided, and the plurality of first circular through holes 302 are evenly distributed in a ring shape around the central axis of the connecting shaft 300; this ensures that during one rotation of the connecting shaft 300, a plurality of different first circular through holes 302 are rotated in sequence to face the water inlet pipe 200, thereby shortening the time interval between two adjacent water inlets in the connecting shaft 300, facilitating the rapid entry of water in the water inlet pipe 200 into the connecting shaft 300 and ensuring a sufficient water inlet rate in the connecting shaft 300.

[0044] Preferably, the plurality of first circular through holes 302 uniformly distributed in an annular shape may be arranged in two layers along the axial direction of the connecting shaft 300 .

[0045] Due to the setting of the rolling bearing 400, there is a gap between the outer wall of the connecting shaft 300 and the outer wall of the sleeve 100. A coaxially placed annular block 500 is fixed to the inner side of the sleeve 100. The annular block 500 is located between the two rolling bearings 400. The annular block 500 is sleeved on the connecting shaft 300 and rotatably connected thereto. The first circular through holes 302 are all located between the upper end face and the lower end face of the annular block 500. A second circular through hole 501 is opened on the peripheral wall of the annular block 500 close to the water inlet pipe 200. The second circular through hole 501 is coaxially placed with the water inlet pipe 200. When any first circular through hole 302 is rotated to face the water inlet pipe 200, the first circular through hole 302, the second circular through hole 501 and the water inlet pipe 200 are connected through. By setting the annular block 500, the first circular through hole 302 that is not connected through to the water inlet pipe 200 can be sealed and blocked.

[0046] The outer wall of the annular block 500 and the inner wall of the sleeve 100 are water-tight, and the inner wall of the annular block 500 and the outer wall of the connecting shaft 300 are water-tight, which can prevent water from leaking out and flowing into the rolling bearing 400 to cause rust.

[0047] In order to facilitate the installation and connection of the drill bit, as well as the maintenance and replacement of the drill bit, an external thread 303 is provided on the outer peripheral wall of the connecting shaft 300 at the end of the water injection channel 301; a threaded hole matching the external thread 303 is provided on the connected diamond, and the drill bit can be installed on the connecting shaft 300 through a threaded connection, which facilitates the disassembly of the drill bit and facilitates subsequent maintenance and replacement.

[0048] In order to facilitate the installation and connection between the connecting shaft 300 and the external driving source, a plug-in hole 304 is provided at the end of the connecting shaft 300 away from the external thread 303, and a thread groove is provided on the inner wall of the plug-in hole 304. Through the arrangement of the plug-in hole 304 and the thread groove, the connection between the connecting shaft 300 and the external driving source is facilitated. For example, when a rotating motor is selected as the driving source, the output shaft of the rotating motor is inserted into the plug-in hole 304 and threadedly engaged with the thread groove.

[0049] The diameter of the plug hole 304 gradually increases from the end close to the external thread 303 to the end away from the external thread 303, which can facilitate the insertion of the output end of the rotating motor.

[0050] In the present application, another connection method between the connecting shaft 300 and the external driving unit is also proposed, and the connection method is as follows: the connecting shaft 300 is sealed at the end away from the external thread 303, and the connecting shaft 300 is fixedly connected with a prism 600 placed coaxially at the end away from the external thread 303, and the output end of the driving source is provided with a slot adapted to the prism 600, and the prism 600 can be directly connected to the output end slot of the external driving source.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The above shows and describes the basic principles, main features and advantages of the present disclosure. Those skilled in the art should understand that the present disclosure is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present disclosure. Without departing from the spirit and scope of the present disclosure, the present disclosure may have various changes and improvements, and these changes and improvements fall within the scope of the present disclosure to be protected.

Claims

1. The water supply system of the diamond drill bit is characterized by: include: A sleeve (100), both ends of the sleeve (100) are open; A water inlet pipe (200), the water inlet pipe (200) is fixed on the side wall of the middle section of the sleeve (100), the water inlet pipe (200) is connected to the inside of the sleeve (100), and a switch valve (201) is provided on the water inlet pipe (200); A connecting shaft (300) is rotatably connected to the inner side of the sleeve (100), both ends of the connecting shaft (300) extend to the outer side of the sleeve (100), one end of the connecting shaft (300) is provided with a water injection channel (301) arranged coaxially, a first circular through hole (302) is provided on the peripheral wall of the connecting shaft (300) near the water inlet pipe (200), and the first circular through hole (302) is connected to the water inlet pipe (200).

2. The water supply system for a diamond drill bit according to claim 1, characterized in that: Coaxially placed rolling bearings (400) are provided at both ends of the sleeve (100); the inner side walls of the inner rings of the rolling bearings (400) are fixed to the connecting shaft (300); and the outer side walls of the outer rings of the rolling bearings (400) are fixed to the inner wall of the sleeve (100).

3. The water supply system for a diamond drill bit according to claim 2, characterized in that: A plurality of first circular through holes (302) are provided, and the plurality of first circular through holes (302) are evenly distributed in a ring shape around the central axis of the connecting shaft (300).

4. The water supply system for a diamond drill bit according to claim 3, characterized in that: A coaxially arranged annular block (500) is fixed on the inner side of the sleeve (100). The annular block (500) is located between two rolling bearings (400). The annular block (500) is sleeved on the connecting shaft (300) and is rotatably connected thereto. The first circular through holes (302) are located between the upper end surface and the lower end surface of the annular block (500). A second circular through hole (501) is provided on the peripheral wall of the annular block (500) close to the water inlet pipe (200). The second circular through hole (501) and the water inlet pipe (200) are coaxially arranged. When any of the first circular through holes (302) is rotated to face the water inlet pipe (200), the first circular through hole (302), the second circular through hole (501) and the water inlet pipe (200) are connected through each other.

5. The water supply system for a diamond drill bit according to claim 4, characterized in that: The outer wall of the circular ring block (500) and the inner wall of the sleeve (100) are watertight, and the inner wall of the circular ring block (500) and the outer wall of the connecting shaft (300) are watertight.

6. The water supply system for a diamond drill bit according to claim 1, characterized in that: An external thread (303) is provided on the outer peripheral wall of the end of the connecting shaft (300) where the water injection channel (301) is opened.

7. The water supply system for a diamond drill bit according to claim 6, characterized in that: An inserting hole (304) is provided at the end of the connecting shaft (300) away from the external thread (303) and is coaxially arranged with the connecting shaft (300), and a thread groove is provided on the inner wall of the inserting hole (304).

8. The water supply system for a diamond drill bit according to claim 7, characterized in that: The diameter of the plug hole (304) gradually increases from the end close to the external thread (303) to the end away from the external thread (303).

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