Handheld high-pressure water flushing type drill bit

Abstract

The utility model relates to a handheld high-pressure water flushing type drill bit, and relates to the field of civil construction, in particular to a narrow space tube well drilling construction technology. According to the technology, a portable and efficient manual drilling tool is formed by combining parts such as a well pipe, a disposable flushing drill bit, a hammering base and a high-pressure flushing pipe. The method is characterized in that high-pressure water is used for dispersing a stratum, a manual hammering mode is combined, rapid and low-cost drilling operation is achieved, and the efficiency of tube well drilling and hole forming in a narrow space is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of civil engineering construction, and in particular to a handheld high-pressure water jet drill bit. Background Technology

[0002] Groundwater control is a crucial aspect of civil engineering construction. Traditional well construction methods typically rely on large drilling rigs; however, in confined spaces or with small-scale operations, using such equipment is costly and impractical. Currently, well construction in confined spaces where down-the-hole hammer drills cannot be used, or for small-scale well construction, presents challenges due to high costs and operational difficulties. Utility Model Content

[0003] In order to improve the drilling efficiency and reduce the cost of well drilling in confined spaces, this application provides a handheld high-pressure water jet drill bit.

[0004] The present application provides a handheld high-pressure water jet drill bit with the following technical solution:

[0005] A handheld high-pressure water jet drill bit, comprising:

[0006] well pipe;

[0007] A disposable water-flushing drill bit, wherein the disposable water-flushing drill bit is disposed at one end of the well pipe and a high-pressure water-flushing port is opened at its front end;

[0008] A hammer base is disposed at the other end of the well casing;

[0009] A high-pressure flushing pipe is installed inside the well pipe, with one end connected to the high-pressure flushing port.

[0010] By adopting the above technical solution, when drilling wells in confined spaces, the base is struck by a pneumatic pick or sledgehammer to promote the well casing's advance towards the well. The disposable water-flushing drill bit, through a high-pressure flushing port connected to a high-pressure flushing pipe, uses high-pressure water to disperse the formation during its advance towards the well casing, facilitating the advancement of the disposable water-flushing drill bit towards the well. The overall structure is simple and easy to use, improving the drilling efficiency of wells in confined spaces and reducing drilling costs.

[0011] Preferably, the end of the disposable flushing drill bit away from the well casing is pointed.

[0012] By adopting the above technical solution, the end of the disposable water-flushing drill bit away from the well casing is set into a pointed tip, which makes it easier to drill into the well casing when it is driven downwards for impact drilling, thereby improving the efficiency of drilling holes in confined spaces.

[0013] Preferably, the disposable water-flushing drill bit is detachably connected to the well casing.

[0014] By adopting the above technical solution, the disposable water-flushing drill bit is designed to be detachably connected to the well casing, which facilitates the replacement of the drill bit. The disposable water-flushing drill bit can be set according to different formations and drilling requirements, while reducing the time required for replacing the drill bit and further improving the drilling efficiency of the well.

[0015] Preferably, a screw hole is provided at the high-pressure flushing port, and the end of the high-pressure flushing pipe that connects to the disposable flushing drill bit is provided with a thread, so that it can be detachably connected to the high-pressure flushing port.

[0016] By adopting the above technical solution, when the formation is flushed by the high-pressure flushing pipe from the high-pressure flushing port, a large amount of mud and sand will be generated. By setting a screw hole in the high-pressure flushing port and setting a thread in the high-pressure flushing pipe, the high-pressure flushing pipe and the high-pressure flushing port are connected by a thread to seal the high-pressure flushing port, preventing mud and sand from entering the well from the high-pressure flushing port. At the same time, the threaded connection can provide good sealing performance, ensuring that there will be no leakage under the impact of high-pressure water flow, thereby maintaining the efficiency and power of flushing.

[0017] Preferably, the hammer base is detachably connected to the well casing, and includes a connecting part and a striking part. The connecting part is connected to the well casing, and the striking part is solid.

[0018] By adopting the above technical solution, when the hammer base is struck by the hammer, it can be quickly removed for repair or replacement without extensive disassembly of the entire equipment, saving time and costs. At the same time, setting the striking part to be solid can effectively transmit the impact force and ensure that the structural integrity is maintained under continuous operation, thus enhancing the stability and durability of the hammer base.

[0019] Preferably, the diameter of the striking part is smaller than the diameter of the connecting part.

[0020] By adopting the above technical solution, the diameter of the striking part is set to be smaller than that of the connecting part. When the striking part is struck by the striking hammer, higher pressure can be generated, thereby more concentratedly transmitting the force to the well casing and improving the operating efficiency.

[0021] Preferably, it also includes a high-pressure water inlet pipe, which is disposed at the connecting part, with one end detachably connected to the high-pressure flushing pipe and the other end penetrating the connecting part and disposed on the outside of the connecting part.

[0022] By adopting the above technical solution, and by setting the high-pressure water inlet pipe in the connection part and detachably connecting it with the high-pressure flushing pipe, a stable and efficient water supply can be ensured.

[0023] Preferably, the well casing is configured as a vacuum casing and / or a high-density filter casing, depending on the drilling geological conditions.

[0024] By adopting the above technical solutions, when drilling in formations with fine particles and low aquifer permeability, the well casing is set as a vacuum casing. When the well casing is a vacuum casing, the connection between the vacuum casing and the drill bit does not require a high-pressure water inlet pipe. During use, the base is directly struck with a hammer to promote well casing advancement. When drilling in formations with larger bottom particles and high aquifer permeability, the well casing is set as a high-density filter pipe. After the high-density filter pipe is connected to the drill bit, the formation is dispersed by a high-pressure flushing pipe, and then the well casing advancement is promoted by striking the base with a hammer, which facilitates drilling operations and improves drilling efficiency.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] When drilling wells in confined spaces, the base is struck by a pneumatic pick or sledgehammer to promote the well casing's advance into the well. The disposable water-flushing drill bit, connected to a high-pressure water-flushing port, uses high-pressure water to disperse the formation during its advance into the well casing, facilitating the drill bit's advance into the well. The overall structure is simple and easy to use, improving the efficiency of drilling wells in confined spaces and reducing drilling costs.

[0027] The end of the disposable water-flushing drill bit away from the well casing is made into a pointed tip, which makes it easier to drill into the well casing when it is driven downwards, thus improving the efficiency of drilling holes in confined spaces.

[0028] The disposable water-flushing drill bit is designed to be detachably connected to the well casing, making it easy to replace the drill bit. The disposable water-flushing drill bit can be set according to different formations and drilling requirements, while reducing the time required for drill bit replacement and further improving the drilling efficiency of the well. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a handheld high-pressure water jet drill bit structure according to this application.

[0030] Figure 2 yes Figure 1 Enlarged view of section A.

[0031] Figure 3 This is a schematic diagram of a disposable water-flushing drill bit.

[0032] Figure 4 This is a schematic diagram of the hammer-shaped base structure.

[0033] Explanation of reference numerals in the attached drawings: 1. Well casing; 2. Disposable flushing drill bit; 21. High-pressure flushing port; 211. Screw hole; 3. Hammer base; 31. Connecting part; 32. Striking part; 4. High-pressure flushing pipe; 5. High-pressure water inlet pipe. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-4This application will be described in further detail.

[0035] This application discloses a handheld high-pressure water jet drill bit. (See also...) Figure 1 , Figure 2 The handheld high-pressure water jet drill bit includes a well casing 1, a disposable water jet drill bit 2, a hammer base 3, and a high-pressure water jet pipe 4.

[0036] Reference Figure 1 Well casing 1, as the main component of the entire device, possesses high structural strength and corrosion resistance, ensuring its stability and durability during use. The specific material of well casing 1 can be selected according to actual needs, typically using high-strength metal materials such as alloy steel to meet construction requirements under different geological conditions.

[0037] The well casing 1 is selected according to the geological conditions, such as a vacuum casing or a high-density filter casing. Specifically, when drilling in a formation with fine particles and a low aquifer permeability coefficient, the well casing 1 is set as a vacuum casing. When the well casing 1 is a vacuum casing, the connection between the vacuum casing and the drill bit does not require the connection of the high-pressure water inlet pipe 5. During use, the hammer base 3 is directly struck to promote the advance of the well casing 1. When drilling in a formation with larger bottom particles and a high aquifer permeability coefficient, the well casing 1 is set as a high-density filter casing. After the high-density filter casing is connected to the drill bit, the formation is dispersed by the high-pressure flushing pipe 4, and then the advance of the well casing 1 is promoted by striking the hammer base 3, which facilitates drilling work and improves drilling efficiency.

[0038] Reference Figure 2 At one end of the well casing 1, a disposable water-flushing drill bit 2 is connected. This drill bit is a key component for realizing the drilling function. The disposable water-flushing drill bit 2 is designed with a sharp cone shape, and its end away from the well casing 1 is specially processed into a pointed shape so that it can more easily cut into the formation during the drilling process, reduce the drilling difficulty, and improve the operation efficiency.

[0039] Drill bits are typically made of high-strength, high-wear-resistant materials such as cemented carbide to ensure that they maintain good performance during long-term use.

[0040] Reference Figure 3 The disposable water-flushing drill bit 2 has a high-pressure flushing port 21 at its front end. The position and shape of the high-pressure flushing port 21 are precisely designed to ensure that the high-pressure water flow can be concentrated and effectively impact the formation, thereby assisting the drill bit in drilling. The edge of the high-pressure flushing port 21 is also machined with a threaded hole 211 for connection with the high-pressure flushing pipe 4. Through the threaded connection, a stable and high-pressure-resistant sealed connection can be achieved between the high-pressure flushing pipe 4 and the flushing port, effectively preventing leakage or loosening under the impact of high-pressure water flow.

[0041] Reference Figure 2 , Figure 4The hammer base 3 is located at the other end of the well casing 1, facilitating the use of pneumatic picks or sledgehammers by construction personnel to drive the drilling of the well casing 1. The hammer base 3 is designed as a detachable structure, comprising a connecting part 31 and a striking part 32. The connecting part 31 connects to the well casing 1, while the striking part 32 bears the hammer blows. To maximize the hammering effect, the striking part 32 is a solid structure with a diameter slightly smaller than that of the connecting part 31. This design allows for higher pressure to be generated during hammering, concentrating the force more effectively on the well casing 1 and improving operational efficiency.

[0042] Reference Figure 2 The high-pressure flushing pipe 4 is responsible for delivering the water flow provided by the high-pressure water source to the high-pressure flushing port 21 of the disposable flushing drill bit 2. The material of the high-pressure flushing pipe 4 has high wear resistance and corrosion resistance to ensure its stability and reliability during use.

[0043] Reference Figure 4 It also includes a high-pressure water inlet pipe 5, which is located at the connection part 31 of the hammer base 3. One end of the high-pressure water inlet pipe 5 is detachably connected to the high-pressure flushing pipe 4, while the other end penetrates the connection part 31 and is located on its outside, ensuring a stable and continuous water supply and providing a reliable guarantee for high-pressure flushing.

[0044] Reference Figure 2 During the process, the construction personnel first select a suitable type of well casing 1 (such as a vacuum tube or a high-density filter tube) based on the geological conditions. Then, they sequentially connect components such as the disposable flushing drill bit 2, the high-pressure flushing pipe 4, and the high-pressure water inlet pipe 5 to the well casing 1. After connection, the high-pressure water source is turned on, allowing high-pressure water to flow through the high-pressure water inlet pipe 5 and the high-pressure flushing pipe 4 to the high-pressure flushing port 21 of the drill bit. Subsequently, the construction personnel use a pneumatic pick or sledgehammer to hammer the hammer base 3, thereby promoting the well casing 1 and the disposable flushing drill bit 2 to advance into the well. During this process, the high-pressure water continuously disperses the formation, assisting the drill bit to drill more effectively into the formation until the predetermined drilling task is completed.

[0045] The implementation principle of a handheld high-pressure water jet drill bit in this application embodiment is as follows: When drilling a well in a confined space, the base 3 is struck by a pneumatic pick or sledgehammer to promote the well casing 1 to advance towards the well. The disposable water jet drill bit 2 uses high-pressure water to disperse the formation during the advance towards the well casing 1 through the high-pressure water jet port 21 connected to the high-pressure water jet pipe 4. This facilitates the advance of the disposable water jet drill bit 2 towards the well. The overall structure is simple and easy to use, which improves the drilling efficiency of wells in confined spaces and reduces the drilling cost.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A handheld high-pressure water jet drill bit, characterized in that: include: well pipe(1); Disposable flushing drill bit (2), wherein the disposable flushing drill bit (2) is disposed at one end of the well pipe (1), and a high-pressure flushing port (21) is opened at its front end; A hammer base (3) is disposed at the other end of the well pipe (1); High-pressure flushing pipe (4) is installed inside the well pipe (1), and one end is connected to the high-pressure flushing port (21).

2. The handheld high-pressure water jet drill bit according to claim 1, characterized in that: The disposable water-flushing drill bit (2) has a pointed end away from the well casing (1).

3. The handheld high-pressure water jet drill bit according to claim 2, characterized in that: The disposable water-flushing drill bit (2) is detachably connected to the well casing (1).

4. The handheld high-pressure water jet drill bit according to claim 1, characterized in that: A screw hole (211) is provided at the position of the high-pressure flushing port (21), and the end of the high-pressure flushing pipe (4) connected to the disposable flushing drill bit (2) is provided with a thread, and is detachably connected to the high-pressure flushing port (21).

5. The handheld high-pressure water jet drill bit according to claim 1, characterized in that: The hammer base (3) is detachably connected to the well pipe (1) and includes a connecting part (31) and a striking part (32). The connecting part (31) is connected to the well pipe (1), and the striking part (32) is solid.

6. The handheld high-pressure water jet drill bit according to claim 5, characterized in that: The diameter of the striking part (32) is smaller than the diameter of the connecting part (31).

7. The handheld high-pressure water jet drill bit according to claim 5, characterized in that: It also includes a high-pressure water inlet pipe (5), which is disposed in the connecting part (31). One end is detachably connected to the high-pressure flushing pipe (4), and the other end penetrates the connecting part (31) and is disposed on the outside of the connecting part (31).

8. The handheld high-pressure water jet drill bit according to claim 1, characterized in that: The well casing (1) is configured as a vacuum casing and / or a high-density filter casing according to the drilling geological conditions.

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