A quarrying device with the function of removing sediment from the bottom of the hole without lifting the drill.

Abstract

This application provides a quarrying device with the function of extracting bottom sediment without drilling, including a drill rod, a drill bit, and a sediment removal device. The sediment removal device includes, in sequence: a retrieval tool for retrieving and deploying the sediment removal device; a water pipe, which is a cylindrical structure open at both ends with a through-hole on the side; a nozzle, which is a cylindrical structure open at both ends; a nozzle seat, which is an annular structure with internal threads; a nozzle with a conical inner wall; a diffuser, which is a cylindrical structure open at both ends with a through-hole on the side wall; an inner tube, which is a hollow cylindrical shape open at both ends; a retaining spring, fixed to the head end inside the inner tube; a retaining spring seat, fixed to the head end inside the inner tube, with the tail end fixedly connected to the head end of the retaining spring; an annular seat ring, fixed to the inner wall of the drill rod; and an annular sealing ring, fixed to the outside of the sediment removal device, located on one side of the tail end of the through-hole. The advantage of this application is that it can remove rock sediment from the bottom of the hole, solving the problem of residual rock sediment.

Description

Technical Field

[0001] This application belongs to the field of quarrying engineering technology, specifically relating to a quarrying device that can remove sediment from the bottom of the hole without lifting the drill. Background Technology

[0002] In the field of mineral resource development, drilling operations are the core link in obtaining information about underground ore layers and realizing resource extraction. The technical solutions and operational efficiency of drilling operations directly affect the overall mining cost and resource utilization efficiency. Among the current mainstream mining drilling equipment, there is a core structure based on "drill rod-drill bit collaborative operation": this device drives the drill bit to rotate through a power system, which drives the connected drill rod to drill downwards vertically until it reaches the target ore layer; at the same time, relying on the hollow structure design of the drill rod, the ore core can be transported to the surface through a wireline coring device without retrieving the drill bit, thereby realizing a continuous operation mode of "drilling and coring simultaneously", which simplifies to a certain extent the cumbersome process of traditional drilling "drilling-stopping-retrieving-coring".

[0003] However, this technical solution still faces significant technical bottlenecks in practical applications, with the core issue focusing on the challenge of handling rock sediment generated during drilling. During the high-speed rotation of the drill bit to break up rock, in addition to extracting core samples via hollow drill pipes, a large amount of small-particle rock sediment is generated. Due to its small size and light weight, this sediment is difficult to effectively capture by existing hollow drill pipe conveying systems. On the one hand, the sediment easily adheres to the inner wall of the drill pipe or the sidewall of the borehole, preventing it from rising with the mainstream air or fluid flow; on the other hand, some sediment settles directly to the bottom of the borehole, forming a continuous accumulation.

[0004] More importantly, the accumulation of rock sediment can severely impact the performance of drilling fluid. During drilling operations, drilling fluid (also known as drilling mud) performs multiple core functions, including cooling the drill bit, lubricating the drill pipe, carrying cuttings, and stabilizing the borehole wall. Its viscosity, fluidity, and suspension properties must be maintained within strict technical limits. When rock sediment accumulates at the bottom of the borehole and mixes with the drilling fluid, it leads to a significant increase in the concentration of solid particles in the fluid, resulting in abnormally high viscosity and a sharp decrease in fluidity. At best, this narrows the circulation channel between the drill pipe and the borehole wall, reducing cooling and lubrication efficiency and accelerating drill bit wear. At worst, it interrupts the drilling fluid circulation, preventing the timely removal of heat and cuttings generated during drilling, and even causing drill bit jamming, borehole wall collapse, and other safety accidents, directly hindering subsequent drilling operations.

[0005] To address this issue, existing technical solutions often employ a passive approach of "interrupting drilling - retrieving drill pipe and cleaning": when drilling fluid performance drops to a critical value due to sediment accumulation, or drilling efficiency significantly decreases, operators must first stop the power system and disconnect the rotation drive of the drill bit and drill pipe; then, using a lifting device, the drill pipe and drill bit, which can be tens or even hundreds of meters long, are extracted from the borehole as a whole, exposing the sediment accumulation area at the bottom of the borehole; then, specialized cleaning tools (such as negative pressure suction pumps, mechanical scrapers, etc.) are used to remove the rock sediment accumulated at the bottom, and the drilling fluid is filtered and its performance adjusted; after the cleaning and drilling fluid are restored, the drill pipe and drill bit are lowered back to the bottom of the borehole, and the drilling position is calibrated before operations can resume.

[0006] This process suffers from significant efficiency deficiencies: on the one hand, the drilling and lowering processes consume considerable time, with a single dust removal operation often taking several hours (depending on the borehole depth and equipment specifications), resulting in a substantial reduction in the effective drilling time. On the other hand, frequent drilling stops and starts disrupt borehole stability, increasing the risk of borehole collapse. Furthermore, repeated start-ups and shutdowns of the power system exacerbate equipment wear and tear, raising maintenance costs. According to industry data, in drilling strata with high rock hardness and significant sediment production, downtime due to dust removal can account for 30% to 50% of the total operating time, severely restricting the overall efficiency of mining drilling and becoming a critical technical challenge that urgently needs to be addressed in the current exploration engineering field. Summary of the Invention

[0007] The purpose of this application is to overcome the shortcomings of existing technologies that require lifting the drill bit when removing rock sediment, which affects work efficiency.

[0008] To achieve the above objectives, this application proposes a quarrying device with the function of removing bottom sediment without drilling, comprising a drill rod and a drill bit, and the device further comprising:

[0009] A cuttings removal device, placed at the bottom of the drill pipe, is used to capture rock sediment at the bottom of the borehole; when removed from the drill pipe, the captured rock sediment is carried out with it.

[0010] The slag removal equipment includes:

[0011] A retrieval device is used to lower or remove cuttings removal equipment from the drill pipe using ropes.

[0012] The water pipe is a cylindrical structure with open ends, and has one or more liquid inlet holes penetrating its side wall. Its tail end is detachably connected to the head end of the retrieval device.

[0013] The nozzle is a cylindrical structure with openings at both ends. Its tail end is detachably connected to the water pipe, and its head end has external threads.

[0014] The nozzle seat is a ring-shaped structure with internal threads, and its tail end is threadedly connected to the head end of the nozzle.

[0015] The nozzle has a tapered inner wall, with the inner diameter at the tail end of the inner wall being larger than the inner diameter at the head end; the tail end of the nozzle has an external thread that is threadedly connected to the head end of the nozzle seat.

[0016] The diffuser tube is a cylindrical structure with openings at both ends; the tail end of the diffuser tube is detachably connected to the head end of the nozzle seat; the head end of the nozzle is located inside the diffuser tube; the side wall of the diffuser tube has one or more through-holes.

[0017] The inner tube is a hollow cylindrical shape with openings at both ends, and its tail end is detachably connected to the head end of the diffuser tube.

[0018] A retaining ring is fixed to the head end inside the inner tube;

[0019] A retaining ring seat is fixed to the head end inside the inner tube, and the tail end is fixedly connected to the head end of the retaining ring.

[0020] A ring-shaped seat ring is fixed to the inner wall of the drill pipe;

[0021] An annular sealing ring is fixed to the outside of the slag removal device, located on one side of the tail end of the discharge hole; the outer diameter of the sealing ring is smaller than the inner diameter of the seat ring.

[0022] As an improvement to the above-mentioned device, the outer diameter of all components located on one side of the head end of the sealing ring in the slag removal equipment is smaller than the inner diameter of the seat ring.

[0023] As an improvement to the above-mentioned device, the opening of the liquid inlet on the outer wall of the water pipe is closer to the tail end of the water pipe than the opening on the inner wall.

[0024] As an improvement to the above-mentioned device, the diffuser tube includes an outer cylinder and an inner cylinder;

[0025] The outer cylinder is a cylindrical shape with open ends; the inner cylinder is a cylindrical shape with an open tail end and a closed head end; the outer diameter of the inner cylinder is smaller than the inner diameter of the outer cylinder; the inner cylinder is located inside the outer cylinder, and their axes coincide; the head end of the inner cylinder is fixed inside the head end of the outer cylinder and is integrated with the inner sidewall of the outer cylinder; there is a first cavity between the head end face of the inner cylinder and the head end face of the outer cylinder; there is a second cavity between the outer sidewall of the tail end of the inner cylinder and the inner sidewall of the tail end of the outer cylinder; the tail end face of the inner cylinder is inside the outer cylinder and is at a set distance from the tail end face of the outer cylinder; the fusion point of the head end of the inner cylinder and the head end of the outer cylinder has one or more liquid passages connecting the first cavity and the second cavity; the inner diameter of the inner cylinder gradually decreases from the tail end to the head end, maintains a set distance, and then gradually increases; there is one or more drain holes penetrating the inner cylinder and the sidewall of the outer cylinder at the head end of the inner cylinder.

[0026] As an improvement to the above-mentioned device, the inner diameter of the tail end of the inner cylinder is larger than the inner diameter of the nozzle head end.

[0027] As an improvement to the above-mentioned device, the opening position of the drain hole on the inner wall of the inner cylinder is closer to the tail end of the diffuser than the opening position of the drain hole on the outer wall of the outer cylinder.

[0028] As an improvement to the above-mentioned device, a reducing pipe with a gradually decreasing inner diameter extends from the outer wall of the outer cylinder head end toward the head end direction;

[0029] The head end of the reducing tube is detachably connected to the tail end of the inner tube.

[0030] As an improvement to the above-mentioned device, the head end of the snap ring seat protrudes beyond the drill bit.

[0031] As an improvement to the above-mentioned device, the water pipe includes a detachably connected connecting pipe and a liquid inlet pipe; the tail end of the connecting pipe is detachably connected to the head end of the retrieval device; and the head end of the liquid inlet pipe is detachably connected to the tail end of the spray pipe.

[0032] As an improvement to the above-mentioned device, the inner diameter of the nozzle is a fixed value along the axial direction and is smaller than the inner diameter of the water pipe.

[0033] Compared with existing technologies, the advantages of this application are:

[0034] 1. The device of this application uses the retrieval device in the wireline coring assembly as the top connecting component, which can be seamlessly integrated into the existing wireline coring drill bit without modifying the original drill bit, thus reducing the cost of use;

[0035] 2. By combining nozzle spraying with diffuser tubes to form local reverse circulation at the bottom of the hole, negative pressure is used to actively "suck out" rock sediment. Compared with traditional flushing methods, this can remove rock sediment deposited at the bottom of the hole and solve the problem of rock sediment residue.

[0036] 3. After using this device, normal drilling and rock sediment collection can be switched at any time without having to take the drill bit out of the ground, thus shortening the drilling operation time. Attached Figure Description

[0037] Figure 1 The image shown is a longitudinal cross-sectional view of a quarrying device that removes sediment from the bottom of the borehole without lifting the drill.

[0038] Figure 2 The diagram shows the front view, top view, and side view of the diffuser.

[0039] Figure 3 The diagram shows the flow path of drilling fluid in the device of this application.

[0040] Attached image labels:

[0041] 1. Drill rod 2. Drill bit

[0042] 3. Salvage device 4. Water pipe

[0043] 401. Connecting pipe; 402. Liquid inlet.

[0044] 403, Inlet pipe 5, Sealing ring

[0045] 6. Seat ring 7. Nozzle

[0046] 8. Nozzle seat 9. Diffuser tube

[0047] 901, outer cylinder 902, inner cylinder

[0048] 903. Liquid inlet pipe; 904. Liquid inlet hole

[0049] 905, reducer 10, nozzle

[0050] 11. Inner tube 12. Snap ring

[0051] 13. Snap ring seat Detailed Implementation

[0052] The technical solution of this application will be described in detail below with reference to the accompanying drawings.

[0053] like Figure 1 As shown, the present application provides a quarrying device with the function of removing bottom sediment without drilling, which is suitable for mining / quarrying work scenarios using drilling methods. It may include a drill bit 2 and a hollow cylindrical drill rod 1 driven by the drill bit 2.

[0054] For ease of description, in all descriptions, the direction toward drill bit 2 will be referred to as the head end, and the direction away from drill bit 2 will be referred to as the tail end.

[0055] The drill pipe 1 may also be equipped with a cuttings removal device for removing rock sediment from the bottom of the borehole. The cuttings removal device may include, from the tail end to the head end, the following components in sequence: a retrieval device 3, a water pipe 4, a nozzle 7, a nozzle seat 8, a diffuser 9, and an inner pipe 11. A sealing ring 5 may also be fixed in the middle of the cuttings removal device.

[0056] The retrieval device 3 is used to lower the cuttings removal equipment from the borehole into the drill pipe 1 using a rope, reaching the bottom of the drill pipe 1 and securing it. After the drill pipe 1 is filled with rock sediment, the cuttings removal equipment is then extracted from the drill pipe 1. The structure of the retrieval device 3 is the same as that of existing rope coring equipment and is prior art, so it will not be described in detail here.

[0057] A water pipe 4 can be detachably connected to the head end of the retrieval device 3. The water pipe 4 can be a cylindrical structure with openings at both ends. The water pipe 4 can include a connecting pipe 401 at the tail end and a liquid inlet pipe 403 at the head end. The tail end of the connecting pipe 401 can be detachably connected to the head end of the retrieval device 3, for example, by threaded connection or snap-fit ​​connection. The head end of the connecting pipe 401 can also be detachably connected to the tail end of the liquid inlet pipe 403, for example, by threaded connection or snap-fit ​​connection. The side of the liquid inlet pipe 403 can have one or more liquid inlet holes 402 penetrating its side wall. The position of the opening of the liquid inlet hole 402 on the outer side wall of the liquid inlet pipe 403 can be closer to the tail end of the liquid inlet pipe 403 than the position of the opening on the inner side wall. In other embodiments, the water pipe 4 can also be composed of a single pipe, with the tail end connected to the retrieval device 3 and the head end connected to the spray pipe 7.

[0058] The head end of the water pipe 4 and the tail end of the nozzle 7 can be detachably connected, for example, by threaded connection or snap-fit ​​connection. The nozzle 7 can be a cylindrical structure open at both ends. The outer diameter of its tail end can be basically the same as the outer diameter of the water pipe 4, while the outer diameter of its head end can be smaller than the outer diameter of its tail end. The inner diameter of the nozzle 7 can be a fixed value along the axial direction and can be smaller than the inner diameter of the water pipe 4.

[0059] A ring-shaped sealing ring 5 can be fixed at the tail end near the nozzle 7. A ring-shaped seat ring 6 can be fixedly connected to the inner wall of the drill pipe 1 near the drill bit 2. Except for the retrieval device 3, the water pipe 4, and the sealing ring 5, the outer diameter of all components of the cuttings removal equipment is smaller than the inner diameter of the seat ring 6. When the cuttings removal equipment is lowered into the drill pipe 1, the sealing ring 5 can be blocked by the seat ring 6, preventing the cuttings removal equipment from being lowered further. The sealing ring 5 can press the seat ring 6 tightly and also acts as a seal, preventing the drilling fluid below the seat ring 6 inside the drill pipe 1 from flowing upwards.

[0060] The nozzle 7 can have an external thread at its head end, and the nozzle seat 8 can be a ring structure with an internal thread. The head end of the nozzle 7 can be threadedly connected to the tail end of the nozzle seat 8.

[0061] The inner wall of nozzle 10 can be conical, and the inner diameter of the tail end of the inner wall can be larger than the inner diameter of the head end. The inner diameter of the tail end of nozzle 10 is the same as the inner diameter of the head end of nozzle pipe 7. The outer wall of the tail end of nozzle 10 can be threaded, and can be threaded to the head end of nozzle seat 8. This connection method allows the spatial position of nozzle 10 along the axial direction to be adjusted by rotating nozzle 10.

[0062] The diffuser tube 9 can be a cylindrical structure open at both ends. The tail end of the diffuser tube 9 can be detachably connected to the head end of the nozzle seat 8, for example, by threaded connection or snap-fit ​​connection. After the diffuser tube 9 is connected to the nozzle seat 8, the head end of the nozzle 10 can be located inside the diffuser tube 9.

[0063] The tail end of the diffuser 9 and the head end of the inner tube 11 can be detachably connected, for example, by threaded connection or snap-fit ​​connection. The inner tube 11 can be a hollow cylinder with openings at both ends. The size of the opening at the tail end of the inner tube 11 can be approximately the same as the size of the opening at the head end of the diffuser 9. The diameter of the opening at the tail end of the inner tube 11 can be smaller than the inner diameter of the middle part of the inner tube, which can prevent rock sediment from flowing back with the drilling fluid.

[0064] A retaining circlip 12 and a retaining circlip seat 13 can be fixed to the head end of the inner tube 11. The retaining circlip 12 may have claw-shaped spring pieces at the tail end, allowing drilling fluid carrying rock sediment to flow in from the head end and out from the tail end, while preventing rock sediment in the drilling fluid from flowing from the tail end to the head end. The head end of the retaining circlip seat 13 can extend from the drill pipe 1 and protrude from the drill bit 2. The structures of the retaining circlip 12 and the retaining circlip seat 13 can be existing technologies and will not be described in detail here.

[0065] like Figure 2As shown, the diffuser 9 may include an outer cylinder 901 and an inner cylinder 902. The outer cylinder 901 may be a cylindrical shape with openings at both ends. The inner cylinder 902 may be a cylindrical shape with an opening at the tail end. The outer diameter of the inner cylinder 902 may be smaller than the inner diameter of the outer cylinder 901. The inner cylinder 902 may be located inside the outer cylinder 901, with their axes coinciding. The head end of the inner cylinder 902 may be fixed inside the head end of the outer cylinder 901 and may be integrated with the inner wall of the outer cylinder 901. There may be a certain gap between the end face of the head end of the inner cylinder 902 and the end face of the head end of the outer cylinder 901, forming a first cavity. There may be a certain distance between the outer wall of the tail end of the inner cylinder 902 and the inner wall of the tail end of the outer cylinder 901, forming a second cavity. The end face of the tail end of the inner cylinder 902 may be inside the outer cylinder 901 and may be a certain distance from the end face of the tail end of the outer cylinder 901. The inner diameter of the inner cylinder 902 can gradually decrease from the tail end to the head end, maintain a certain distance, and then gradually increase. The inner diameter of the tail end of the inner cylinder 902 is larger than the inner diameter of the head end of the nozzle 10. The head end of the inner cylinder 902 may have two drain holes 904 penetrating the sidewalls of the inner cylinder 902 and the outer cylinder 901. The opening position of the drain holes 904 on the inner wall of the inner cylinder 902 may be closer to the tail end of the diffuser tube 9 than the opening position of the drain holes 904 on the outer wall of the outer cylinder 901. The junction of the head end of the inner cylinder 902 and the head end of the outer cylinder 901 may have two liquid passage pipes 903 connecting the first cavity and the second cavity. A reducing pipe 905 with a gradually decreasing inner diameter can extend from the outer wall of the head end of the outer cylinder towards the head end. In other embodiments, there may be one or more liquid passage pipes 903 and drain holes 904.

[0066] In other embodiments, the sealing ring 5 can also be fixed on the outside of the diffuser tube 9, with its position higher than the opening position of the drain hole 904 on the outer side wall of the outer cylinder 901. At the same time, the seat ring 6 is also fixed in the drill rod 1 at the position adjacent to the lower part of the sealing ring 5. The outer diameter of the components located on the side of the head end of the sealing ring 5 is smaller than the inner diameter of the seat ring 6.

[0067] like Figure 3 As shown, the usage process of the device in this application is as follows:

[0068] 1. When there is too much rock sediment at the bottom of the borehole, which affects the work, lift the drill rod 1 and the drill bit 2 a distance to remove the drill bit 2 from the rock sediment.

[0069] 2. Insert the slag removal device into the drill rod 1 with the inner tube 11 facing downwards until the sealing ring 5 presses against the seat ring 6. At this time, the head end of the snap ring seat 13 protrudes a certain distance from the drill bit. Then lower the entire device to the bottom of the borehole.

[0070] 3. Drilling fluid with a certain pressure is injected into drill pipe 1 from the ground. After reaching the cuttings removal equipment, the drilling fluid continues to flow downward through the gap between the cuttings removal equipment and drill pipe 1. Because the sealing ring 5 and the seat ring 6 seal the gap between the cuttings removal equipment and drill pipe 1, the drilling fluid flows into the water pipe 4 from the inlet hole 402. After entering the water pipe 4, the drilling fluid continues to flow downward to the nozzle 7 and the nozzle 10, and is ejected from the tip of the nozzle 10. Because the opening diameter of the tip of the nozzle 10 is smaller than the inner diameter of the nozzle 7, the drilling fluid forms a jet with a certain velocity, creating a certain negative pressure area outside the tip of the nozzle 10. After being ejected from the nozzle 10, the drilling fluid enters the tail end of the inner cylinder 902, which is directly opposite. The inner diameter of the inner cylinder 902 gradually decreases from the tail end, and the flow velocity increases, creating a certain negative pressure in this area as well. After entering the inner cylinder 902, the drilling fluid flows from the drain hole 904 to the gap between the cuttings removal equipment and the drill pipe 1, continuing to flow downwards, and then flows out from the gap between the drill bit 2 and the snap ring seat 13. Most of the drilling fluid flowing out from the gap between the drill bit 2 and the snap ring seat 13 flows upwards back to the surface through the gap between the drill pipe 1 and the borehole. A small portion of the drilling fluid is attracted by the negative pressure zone at the tail end of the nozzle 10 and the inner cylinder 902, flowing into the snap ring seat 13, passing through the snap ring 12, and reaching the inner tube 11. The drilling fluid flowing into the snap ring seat 13 carries a lot of rock sediment from the bottom of the borehole. After reaching the inner tube 11, due to the larger inner diameter of the inner tube 11, the flow velocity slows down, and most of the rock sediment, being heavier, no longer flows upwards with the drilling fluid. Due to the obstruction of the snap ring 12, the rock sediment remains inside the inner tube 11. The drilling fluid continues to flow upward from the inner tube 11 to the first cavity of the diffuser tube 9, and then enters the second cavity along the fluid passage 903. Attracted by the negative pressure zone at the tail end of the nozzle 10 and the inner cylinder 902, it enters the tail end of the inner cylinder 902 and mixes with the drilling fluid sprayed from the nozzle 10.

[0071] The head of the snap ring seat 13 protrudes from the drill bit 2, allowing most of the drilling fluid to flow back through the gap between the drill bit 2 and the snap ring seat 13, with only a small portion flowing back into the snap ring seat 13. Because the drilling fluid pressure is relatively high, this design reduces the flow rate and velocity of the backflowing fluid, which is beneficial for the deposition of rock sediment within the inner tube 11 and also prevents rock sediment from flowing back into the relatively narrow fluid passage 903, thus preventing blockage of the fluid passage 903.

[0072] 4. After the inner tube 11 is filled with rock sediment, stop pumping drilling fluid into the drill pipe 1 and remove the cuttings removal equipment from the drill pipe 1. The removal equipment carries away the rock sediment from the bottom of the borehole, restoring the working environment at the bottom of the well to normal, allowing drilling to continue.

[0073] The pressure of the negative pressure zone formed by the nozzle 10 and the tail end of the inner cylinder 902 is related to the flow rate of the drilling fluid and the shape of the area. The position of the nozzle 10 in this device can be adjusted by rotating the nozzle 10 to adjust the pressure formed in the negative pressure zone.

[0074] The device of this application uses the retrieval device in the wireline coring assembly as the top connecting component, which can be seamlessly integrated into the existing wireline coring drill bit without modifying the original drill bit, thus reducing the cost of use. By spraying through the nozzle 10 and combining with the diffuser 9 to form a local reverse circulation at the bottom of the hole, the negative pressure is used to actively "suck out" the rock sediment. Compared with the traditional flushing method, it can remove the rock sediment deposited at the bottom of the hole and solve the problem of rock sediment residue. After using this device, normal drilling and rock sediment collection can be switched at any time without having to take the drill bit 2 out of the ground, thus shortening the drilling operation time.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application, and should all be covered within the scope of the claims of this application.

Claims

1. A stone extraction device having a function of extracting a hole bottom sediment without pulling out a drill, comprising a drill pipe and a drill bit, characterized by, The device further includes: A cuttings removal device, placed at the bottom of the drill pipe, is used to capture rock sediment at the bottom of the borehole; when removed from the drill pipe, the captured rock sediment is carried out with it. The slag removal equipment includes: A retrieval device is used to lower or remove cuttings removal equipment from the drill pipe using ropes. The water pipe is a cylindrical structure with open ends, and has one or more liquid inlet holes penetrating its side wall. Its tail end is detachably connected to the head end of the retrieval device. The nozzle is a cylindrical structure with openings at both ends. Its tail end is detachably connected to the water pipe, and its head end has external threads. The nozzle seat is a ring-shaped structure with internal threads, and its tail end is threadedly connected to the head end of the nozzle. The nozzle has a tapered inner wall, with the inner diameter at the tail end of the inner wall being larger than the inner diameter at the head end; the tail end of the nozzle has an external thread that is threadedly connected to the head end of the nozzle seat. The diffuser tube is a cylindrical structure with openings at both ends; the tail end of the diffuser tube is detachably connected to the head end of the nozzle seat; the head end of the nozzle is located inside the diffuser tube; the side wall of the diffuser tube has one or more through-holes. The inner tube is a hollow cylindrical shape with openings at both ends, and its tail end is detachably connected to the head end of the diffuser tube. A retaining ring is fixed to the head end inside the inner tube; A retaining ring seat is fixed to the head end inside the inner tube, and the tail end is fixedly connected to the head end of the retaining ring. An annular seat ring is fixed to the inner wall of the drill pipe; and An annular sealing ring is fixed to the outside of the slag removal device, located on one side of the tail end of the discharge hole; the outer diameter of the sealing ring is smaller than the inner diameter of the seat ring; The diffuser tube includes an outer cylinder and an inner cylinder; The outer cylinder is a cylindrical shape with open ends; the inner cylinder is a cylindrical shape with an open tail end and a closed head end; the outer diameter of the inner cylinder is smaller than the inner diameter of the outer cylinder; the inner cylinder is located inside the outer cylinder, and their axes coincide; the head end of the inner cylinder is fixed inside the head end of the outer cylinder and is integrated with the inner sidewall of the outer cylinder; there is a first cavity between the head end face of the inner cylinder and the head end face of the outer cylinder; there is a second cavity between the outer sidewall of the tail end of the inner cylinder and the inner sidewall of the tail end of the outer cylinder; the tail end face of the inner cylinder is inside the outer cylinder and is at a set distance from the tail end face of the outer cylinder; the fusion point of the head end of the inner cylinder and the head end of the outer cylinder has one or more liquid passages connecting the first cavity and the second cavity; the inner diameter of the inner cylinder gradually decreases from the tail end to the head end, maintains a set distance, and then gradually increases; there is one or more drain holes penetrating the sidewalls of the inner cylinder and the outer cylinder at the head end of the inner cylinder.

2. The quarrying device with the function of extracting bottom sediment without drilling, as described in claim 1, is characterized in that, In the slag removal device, the outer diameter of all components located on one side of the head end of the sealing ring is smaller than the inner diameter of the seat ring.

3. The quarrying device with the function of extracting bottom sediment without drilling, as described in claim 1, is characterized in that... The opening of the liquid inlet on the outer wall of the water pipe is closer to the tail end of the water pipe than the opening on the inner wall.

4. The quarrying device with the function of extracting bottom sediment without drilling, as described in claim 1, is characterized in that, The inner diameter of the tail end of the inner cylinder is larger than the inner diameter of the head end of the nozzle.

5. The quarrying device with the function of extracting bottom sediment without drilling, as described in claim 1, is characterized in that, The opening of the drain hole on the inner wall of the inner cylinder is closer to the tail end of the diffuser than the opening of the drain hole on the outer wall of the outer cylinder.

6. The quarrying device with the function of extracting bottom sediment without drilling, as described in claim 1, is characterized in that, The outer wall of the outer cylinder head extends toward the head end to form a reducing pipe with a gradually decreasing inner diameter. The head end of the reducing tube is detachably connected to the tail end of the inner tube.

7. The quarrying device with the function of extracting bottom sediment without drilling, as described in claim 1, is characterized in that, The head end of the snap ring seat protrudes from the drill bit.

8. The quarrying device with the function of extracting bottom sediment without drilling, as described in claim 1, is characterized in that, The water pipe includes a detachably connected connecting pipe and a liquid inlet pipe; the tail end of the connecting pipe is detachably connected to the head end of the retrieval device; the head end of the liquid inlet pipe is detachably connected to the tail end of the spray pipe.

9. The quarrying device with the function of extracting bottom sediment without drilling, as described in claim 1, is characterized in that, The inner diameter of the nozzle is a fixed value along the axial direction and is smaller than the inner diameter of the water pipe.

Images