Telescopic splash guard and spraying integrated device for down-the-hole drill

Abstract

The invention relates to the technical field of down-the-hole drills, in particular to a telescopic splash guard and spraying integrated device for a down-the-hole drill, which comprises a cylinder body, an air inlet seat and a drill bit, and further comprises a bidirectional telescopic rod which is fixedly connected to the top of a fixing plate, and the outer side of the air inlet seat is fixedly connected with a fixing plate above the drill bit; the left side and the right side of the bidirectional telescopic rod are connected with arc-shaped protective covers, a telescopic connecting plate is connected between the two arc-shaped protective covers, and the atomizing nozzles are arranged on the outer sides of the arc-shaped protective covers. The arc-shaped protective cover is driven by the bidirectional telescopic rod to move, the protective range is expanded in cooperation with the telescopic connecting plate, broken stone splash prevention in the drilling process is achieved, and the spraying system can switch modes according to working conditions: in dry weather, water flow forms water mist through an atomization nozzle, and construction dust raising is effectively restrained; in cloudy and rainy days, the high-pressure nozzles spray water columns to impact the flow dividing disc, so that water flow diffuses and washes the inner wall of the arc-shaped protective cover, and sludge adhesion is reduced.

Description

Technical Field

[0001] This invention relates to the field of down-the-hole drilling rig technology, and in particular to a retractable splash guard and spray integrated device for down-the-hole drilling rigs. Background Technology

[0002] Down-the-hole drills are a type of impact rotary drilling equipment. Their core feature is that the "down-the-hole impactor" that generates impact force is directly submerged into the bottom of the borehole to directly impact and break the rock surface at high frequency. At the same time, the rotation and propulsion of the drill rod enable efficient drilling of deep holes.

[0003] In the practical application of existing retractable splash guards and integrated spray devices, the problem of stubborn mud and rock powder mixtures easily adhering to the inner wall of the splash guard is becoming increasingly prominent. This internal dirt will gradually harden and thicken, which not only significantly reduces the effective space inside the guard and interferes with the normal movement of the drill rod, but the lumps formed after drying and falling off may also fall directly into the borehole, causing the risk of stuck drill. At present, cleaning the inner wall of the guard mainly relies on manual external rinsing with high-pressure water guns after shutdown or cleaning after disassembly. This method is not thorough, has low work efficiency, and frequent disassembly will accelerate the mechanical wear of the splash guard.

[0004] Therefore, how to provide a retractable splash guard and spray integrated device for down-the-hole drilling rigs is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a retractable splash guard and spray integrated device for down-the-hole drilling rigs to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a retractable splash guard and spray integrated device for down-the-hole drill rigs, comprising a cylinder, an air inlet seat, and a drill bit, wherein a fixing plate is fixedly connected to the outer side of the air inlet seat above the drill bit, and further comprising:

[0007] The bidirectional telescopic pole is fixedly connected to the top of the fixed plate. Arc-shaped protective covers are connected to the left and right sides of the bidirectional telescopic pole, and a telescopic connecting plate is connected between the two arc-shaped protective covers.

[0008] The atomizing nozzle is located on the outside of the arc-shaped protective cover, and the high-pressure nozzle is located on the inside of the arc-shaped protective cover. Both the atomizing nozzle and the high-pressure nozzle are connected to an external water pump.

[0009] The diversion plate, located inside the arc-shaped protective cover, can prevent sludge from adhering to the inside of the arc-shaped protective cover.

[0010] A fixed base plate is located at the bottom of the outer side of the arc-shaped protective cover. A driving component is located on the top of the fixed base plate, and a movable plate is located on the inner side of the arc-shaped protective cover. When the driving component is working, it can drive the movable plate to move.

[0011] The wall scraper is located at the bottom inside the arc-shaped protective cover. The wall scraper is connected to the movable plate, and the movable plate can drive the wall scraper to move on the inner wall of the arc-shaped protective cover when it moves.

[0012] A support arc plate is installed on the inner wall of the arc-shaped protective cover and located below the scraper frame to support the scraper frame.

[0013] The drainage hole is located at the bottom inside the arc-shaped protective cover, which connects the outside and inside of the arc-shaped protective cover.

[0014] Furthermore, it also includes a telescopic assembly, which consists of a bidirectional telescopic rod, an arc-shaped protective cover, a telescopic connecting plate, a water inlet pipe, a diversion pipe bracket, a spray pipe, and an atomizing nozzle;

[0015] The bidirectional telescopic rod is fixedly connected to the front and rear sides of the top of the fixed plate. Telescopic ends are provided on both the left and right sides of the bidirectional telescopic rod. The arc-shaped protective cover is fixedly connected to the telescopic end of the bidirectional telescopic rod. The telescopic connecting plate is fixedly connected between two adjacent arc-shaped protective covers. The diversion pipe frame is fixedly connected to the top of the arc-shaped protective cover. The water inlet pipe is fixedly connected to the top of the diversion pipe frame near the air inlet seat. The spray pipe is fixedly connected to the outside of the diversion pipe frame. The atomizing nozzle is fixedly connected to the end of the spray pipe away from the spray pipe.

[0016] Furthermore, it also includes a cleaning assembly, which consists of a connecting pipe, a high-pressure nozzle, a fixing hole, a fixing ring plate, a spring, and a diverter plate;

[0017] The connecting pipe is fixedly connected to the side of the spray pipe near the arc-shaped protective cover, the high-pressure nozzle is fixedly connected to the end of the connecting pipe away from the spray pipe, the fixing hole is opened in the inner wall of the arc-shaped protective cover, the fixing ring plate is fixedly connected to the side of the fixing hole away from the spray pipe, the spring is fixedly connected to the side of the fixing ring plate away from the connecting pipe, and the diverter plate is fixedly connected to the other end of the spring.

[0018] Furthermore, it also includes a flow-disrupting component, which consists of a fixed base plate, an electric telescopic rod, a movable plate, a rotating block, a telescopic sleeve, a wall scraping frame, a supporting arc plate, a limiting roller, and a drainage hole;

[0019] The fixed base plate is fixedly connected to the middle of the bottom of the outer side of the arc-shaped protective cover. The electric telescopic rod is fixedly connected to the top of the fixed base plate. The electric telescopic rod has a telescopic end. The moving plate is fixedly connected to the telescopic end of the electric telescopic rod. The rotating block is rotatably connected to the front and back of the moving plate. The telescopic sleeve is fixedly connected to the side of the rotating block away from the moving plate. The wall scraper is rotatably connected to the other end of the telescopic sleeve. The supporting arc plate is fixedly connected to the bottom of the inner side of the arc-shaped protective cover. The limiting roller is rotatably connected to the bottom of the wall scraper. The drainage hole is opened at the bottom of the inner side of the arc-shaped protective cover.

[0020] Furthermore, a fixing block is provided on the outside of the spray pipe, and the fixing block is fixedly connected to the arc-shaped protective cover on the side near the arc-shaped protective cover. The spray pipe is fixedly connected to the outer wall of the arc-shaped protective cover through the fixing block.

[0021] Furthermore, both the connecting pipe and the high-pressure nozzle are installed inside the fixing hole, and an electromagnetic reversing valve is installed at the connection between the connecting pipe and the spray pipe, which allows the water flow to be selected to be sprayed through the atomizing nozzle or the high-pressure nozzle by using the electromagnetic reversing valve.

[0022] Furthermore, both the fixed annular plate and the spring are disposed within the fixed hole. A circular groove is provided in the middle of the fixed annular plate, allowing the water jet from the high-pressure nozzle to pass through the middle of the groove and impact the diverter plate. The diverter plate has an axisymmetric bowl-shaped design, which allows the impacted water jet to flow outward along the arc surface.

[0023] Furthermore, the rotating block is rotatably connected to the front and back of the moving plate via a torsion spring, and the wall scraper is rotatably connected to the end of the telescopic sleeve away from the rotating block via a torsion spring. The telescopic sleeve is a telescopic column, and the side of the wall scraper away from the telescopic sleeve contacts the inner wall of the arc-shaped protective cover.

[0024] Furthermore, the bottom of the scraper frame contacts the top of the supporting arc plate, and the supporting arc plate can lift the bottom of the scraper frame. The limiting roller on the side away from the telescopic sleeve continues to roll in contact with the supporting arc plate.

[0025] Furthermore, the telescopic end of the electric telescopic rod penetrates the outer wall of the arc-shaped protective cover and extends to the inner side of the arc-shaped protective cover, where it is fixedly connected to the movable plate. The electric telescopic rod can drive the movable plate to move inside the arc-shaped protective cover.

[0026] The beneficial effects of this invention are:

[0027] 1. This invention uses a bidirectional telescopic rod to drive the arc-shaped protective cover to move, and expands the protection range with the telescopic connecting plate to prevent rock splashing during drilling. The spray system can switch modes according to working conditions: in dry weather, water flows through the atomizing nozzle to form water mist, effectively suppressing construction dust; in rainy weather, high-pressure nozzles spray water jets to impact the diversion plate, causing the water flow to spread and wash the inner wall of the arc-shaped protective cover, reducing sludge adhesion.

[0028] 2. In this invention, for inclined drilling conditions, the device is equipped with a flow disturbance component. The electric telescopic rod drives the moving plate to move, which in turn drives the scraper frame connected by the rotating block and the telescopic sleeve to move along the inner wall of the arc-shaped protective cover. The supporting arc plate and the limiting roller provide support and guidance for the scraper frame. This mechanism can break up the sludge accumulated on the inner wall and allow the sewage to be discharged in a directional manner through the bottom drainage hole, effectively preventing sewage from flowing back into the borehole and ensuring the quality of the hole.

[0029] 3. In this invention, a high-pressure water jet is ejected through the circular groove in the center of a fixed annular plate, directly impacting a bowl-shaped distribution plate. Under water pressure, the distribution plate compresses a spring and moves inward toward the protective cover, causing the water jet to be dispersed by its arc surface and propelled toward the inner wall of the protective cover, achieving rinsing. When the water pressure disappears (i.e., switching to atomization mode), the spring rebounds, causing the distribution plate to reset and tightly cover the fixing hole. This design can both open the channel and diffuse the water flow during cleaning, and automatically close during dust removal to prevent dust from overflowing, while also providing physical protection for the external high-pressure nozzles. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of the overall structure of a retractable splash guard and spray integrated device for down-the-hole drilling rigs proposed in this invention.

[0032] Figure 2 This is a schematic diagram of the drill bit section of a retractable splash guard and spray integrated device for down-the-hole drills proposed in this invention.

[0033] Figure 3 This is a schematic diagram of the bidirectional telescopic rod structure of a telescopic splash guard and spray integrated device for down-the-hole drilling rigs proposed in this invention.

[0034] Figure 4 This is a schematic diagram of the internal structure of the arc-shaped protective cover of a retractable splash guard and spray integrated device for down-the-hole drilling rigs proposed in this invention.

[0035] Figure 5 This is a schematic diagram of the exploded structure of the diversion pipe frame of a retractable splash guard and spray integrated device for down-the-hole drilling rigs proposed in this invention.

[0036] Figure 6 This is a schematic diagram of the connecting pipe of a retractable splash guard and spray integrated device for a down-the-hole drill rig proposed in this invention.

[0037] Figure 7 This is a schematic diagram of the exploded structure at the diversion plate of a retractable splash guard and spray integrated device for down-the-hole drilling rigs proposed in this invention.

[0038] Figure 8 This is a schematic diagram of the supporting arc plate of a retractable splash guard and spray integrated device for down-the-hole drilling rigs proposed in this invention.

[0039] Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle.

[0040] In the diagram: 1. Cylinder body; 2. Air intake seat; 3. Drill bit; 4. Fixing plate; 5. Telescopic assembly; 501. Two-way telescopic rod; 502. Arc-shaped protective cover; 503. Telescopic connecting plate; 504. Water inlet pipe; 505. Diverter pipe bracket; 506. Spray pipe; 507. Atomizing nozzle; 6. Cleaning assembly; 601. Connecting pipe; 602. High-pressure nozzle; 603. Fixing hole; 604. Fixing ring plate; 605. Spring; 606. Diverter plate; 7. Baffle assembly; 701. Fixing base plate; 702. Electric telescopic rod; 703. Moving plate; 704. Rotating block; 705. Telescopic sleeve; 706. Scraper frame; 707. Supporting arc plate; 708. Limiting roller; 709. Drain hole. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0042] Example 1: Reference Figures 1-9 The present invention provides a technical solution: a retractable splash guard and spray integrated device for down-the-hole drills, comprising a cylinder 1, an air inlet seat 2, and a drill bit 3. The air inlet seat 2 is disposed inside the cylinder 1 and can guide the air inlet seat 2 vertically. The drill bit 3 is disposed at the bottom of the air inlet seat 2 and can perform drilling operations. A fixing plate 4 is fixedly connected to the outside of the air inlet seat 2 above the drill bit 3 for supporting the bidirectional telescopic rod 501. The device also includes:

[0043] The bidirectional telescopic rod 501 is fixedly connected to the top of the fixed plate 4. Arc-shaped protective covers 502 are connected to the left and right sides of the bidirectional telescopic rod 501. When working, the bidirectional telescopic rod 501 can drive the two arc-shaped protective covers 502 to move simultaneously in opposite directions. A telescopic connecting plate 503 is connected between the two arc-shaped protective covers 502. By setting the telescopic connecting plate 503, the gap between the two arc-shaped protective covers 502 can be filled.

[0044] Atomizing nozzle 507 is located on the outside of arc-shaped protective cover 502, and high-pressure nozzle 602 is located on the inside of arc-shaped protective cover 502. Both atomizing nozzle 507 and high-pressure nozzle 602 are connected to an external water pump. Atomizing nozzle 507 can atomize the output water, and high-pressure nozzle 602 can pressurize and spray the water.

[0045] Diversion plate 606 is located inside the arc-shaped protective cover 502. It can prevent sludge from adhering to the inside of the arc-shaped protective cover 502. When the diversion plate 606 moves, it can push large pieces of sludge adhering to the inside of the arc-shaped protective cover 502 toward the center of the arc-shaped protective cover 502, thereby reducing the sludge adhesion area.

[0046] A fixed base plate 701 is provided at the bottom of the outer side of the arc-shaped protective cover 502. A driving component is provided at the top of the fixed base plate 701, and a movable plate 703 is provided on the inner side of the arc-shaped protective cover 502. When the driving component is working, it can drive the movable plate 703 to move.

[0047] The wall scraper 706 is located at the bottom of the arc-shaped protective cover 502. The wall scraper 706 is connected to the movable plate 703. When the movable plate 703 moves, it can drive the wall scraper 706 to move on the inner wall of the arc-shaped protective cover 502.

[0048] The supporting arc plate 707 is set on the inner wall of the arc-shaped protective cover 502 and located below the wall scraper 706, and is used to support the wall scraper 706.

[0049] The drainage hole 709 is located at the bottom inside the arc-shaped protective cover 502, which connects the outside and inside of the arc-shaped protective cover 502. When the drill bit 3 is drilling at an angle to the slope, the drill bit 3 needs to be tilted. At the same time, the water sprayed out from inside the arc-shaped protective cover 502 can flow down along the inner wall of the arc-shaped protective cover 502 and gradually accumulate at the angle between the supporting arc plate 707 and the arc-shaped protective cover 502. By setting the drainage hole 709, the sewage can be discharged from the drilling hole of the drill bit 3, reducing the impact of water flow on the drill bit 3.

[0050] Working principle: When protection of the drilling site is required, the bidirectional telescopic rod 501 is controlled to move the arc-shaped protective cover 502 and stretch the telescopic connecting plate 503 in the middle, increasing the protection area of ​​the drilling site. By setting the atomizing nozzle 507, the incoming water flow can be atomized and dispersed on the outside of the arc-shaped protective cover 502 to suppress dust generated during construction. When it is necessary to clean the inner wall of the arc-shaped protective cover 502, the high-pressure nozzle 602 is controlled to spray high-pressure water flow to contact the diversion plate 606, and the diversion plate 606 disperses the water flow to the inner wall of the arc-shaped protective cover 502 for sludge cleaning. When drilling at an angle, the moving plate 703 is controlled to move, so that the wall scraper 706 cleans the inner wall of the arc-shaped protective cover 502, and the sewage is discharged through the drain hole 709.

[0051] Example 2: Reference Figures 2-7 Based on Embodiment 1, the present invention provides a technical solution: it also includes a telescopic component 5, which is composed of a bidirectional telescopic rod 501, an arc-shaped protective cover 502, a telescopic connecting plate 503, a water inlet pipe 504, a diversion pipe frame 505, a spray pipe 506, and an atomizing nozzle 507.

[0052] The bidirectional telescopic rod 501 is fixedly connected to the front and rear sides of the top of the fixed plate 4. Telescopic ends are provided on both the left and right sides of the bidirectional telescopic rod 501. The arc-shaped protective cover 502 is fixedly connected to the telescopic end of the bidirectional telescopic rod 501. The telescopic connecting plate 503 is fixedly connected between two adjacent arc-shaped protective covers 502. The diversion pipe bracket 505 is fixedly connected to the top of the arc-shaped protective cover 502. The water inlet pipe 504 is fixedly connected to the top of the diversion pipe bracket 505 near the air inlet seat 2. The spray pipe 506 is fixedly connected to the outside of the diversion pipe bracket 505. The atomizing nozzle 507 is fixedly connected to the end of the spray pipe 506 away from the spray pipe 506.

[0053] It also includes a cleaning component 6, which consists of a connecting pipe 601, a high-pressure nozzle 602, a fixing hole 603, a fixing ring plate 604, a spring 605, and a diverter plate 606;

[0054] The connecting pipe 601 is fixedly connected to the side of the spray pipe 506 near the arc-shaped protective cover 502. The high-pressure nozzle 602 is fixedly connected to the end of the connecting pipe 601 away from the spray pipe 506. The fixing hole 603 is opened in the inner wall of the arc-shaped protective cover 502. The fixing ring plate 604 is fixedly connected to the side of the fixing hole 603 away from the spray pipe 506. The spring 605 is fixedly connected to the side of the fixing ring plate 604 away from the connecting pipe 601. The diverter plate 606 is fixedly connected to the other end of the spring 605.

[0055] A fixing block is provided on the outside of the spray pipe 506. The fixing block is fixedly connected to the arc-shaped protective cover 502 on the side near the arc-shaped protective cover 502. The spray pipe 506 is fixedly connected to the outer wall of the arc-shaped protective cover 502 through the fixing block.

[0056] Both the connecting pipe 601 and the high-pressure nozzle 602 are located in the fixing hole 603. An electromagnetic reversing valve is provided at the connection between the connecting pipe 601 and the spray pipe 506, which allows the water flow to be selected to be sprayed through the atomizing nozzle 507 or the high-pressure nozzle 602.

[0057] Both the fixed annular plate 604 and the spring 605 are located in the fixed hole 603. The fixed annular plate 604 has a circular groove in the middle. The water column sprayed by the high-pressure nozzle 602 can pass through the middle of the circular groove and impact the diverter plate 606. The diverter plate 606 has an axisymmetric bowl-shaped design, which can make the impacted water column flow outward along the arc surface.

[0058] Example 3: Reference Figures 8-9 Based on Embodiment 2, the present invention provides a technical solution: it also includes a turbulence component 7, which is composed of a fixed base plate 701, an electric telescopic rod 702, a moving plate 703, a rotating block 704, a telescopic sleeve 705, a wall scraping frame 706, a supporting arc plate 707, a limiting roller 708, and a drainage hole 709.

[0059] A fixed base plate 701 is fixedly connected to the middle of the bottom outside of the arc-shaped protective cover 502. An electric telescopic rod 702 is fixedly connected to the top of the fixed base plate 701. The electric telescopic rod 702 has a telescopic end. A movable plate 703 is fixedly connected to the telescopic end of the electric telescopic rod 702. A rotating block 704 is rotatably connected to the front and back of the movable plate 703. A telescopic sleeve 705 is fixedly connected to the side of the rotating block 704 away from the movable plate 703. A wall scraper 706 is rotatably connected to the other end of the telescopic sleeve 705. A supporting arc plate 707 is fixedly connected to the bottom inside of the arc-shaped protective cover 502. A limiting roller 708 is rotatably connected to the bottom of the wall scraper 706. A drainage hole 709 is opened at the bottom inside of the arc-shaped protective cover 502.

[0060] The rotating block 704 is rotatably connected to the front and back of the moving plate 703 via a torsion spring. The wall scraper 706 is rotatably connected to the end of the telescopic sleeve 705 away from the rotating block 704 via a torsion spring. The telescopic sleeve 705 is a telescopic column. The side of the wall scraper 706 away from the telescopic sleeve 705 contacts the inner wall of the arc-shaped protective cover 502.

[0061] The bottom of the scraper 706 contacts the top of the support arc plate 707, and the support arc plate 707 can lift the bottom of the scraper 706. The limiting roller 708 on the side away from the telescopic sleeve 705 continues to roll in contact with the support arc plate 707.

[0062] The telescopic end of the electric telescopic rod 702 penetrates the outer wall of the arc-shaped protective cover 502 and extends to the inner side of the arc-shaped protective cover 502, where it is fixedly connected to the movable plate 703. The electric telescopic rod 702 can drive the movable plate 703 to move inside the arc-shaped protective cover 502.

[0063] Working principle: When protective work is required at the construction site in relatively dry weather, the two arc-shaped protective covers 502 on both sides move in opposite directions simultaneously when the bidirectional telescopic rod 501 is working. At the same time, the telescopic connecting plate 503 on the inner side of the arc-shaped protective cover 502 is stretched, which expands the protection range of the arc-shaped protective cover 502. The bottom of the arc-shaped protective cover 502 and the telescopic connecting plate 503 can prevent the rock chips generated by the drill bit 3 from splashing. External water source is introduced into the water inlet pipe 504, and the water inlet pipe 504 introduces water into the distribution pipe rack. Inside the nozzles 505 and 506, the electromagnetic reversing valve is activated, allowing water to be atomized and sprayed out through the atomizing nozzle 507. The atomized water mist suppresses dust raised near the borehole. In rainy weather, mud and water generated during drilling adhere to the inner side of the arc-shaped protective cover 502. By using the switching function of the electromagnetic reversing valve, the water is pressurized and sprayed out through the high-pressure nozzle 602. The pressurized water jet from the high-pressure nozzle 602 penetrates the middle of the fixed annular plate 604 and impacts the diverter plate 606, causing the spring 605 to stretch and push the diverter plate 606. The water flow is moved away from the inner wall of the arc-shaped protective cover 502, causing the diversion plate 606 to move to the inner side of the arc-shaped protective cover 502. Because the diversion plate 606 is bowl-shaped, the water flow is dispersed upon contact with it and spreads along the inner wall of the diversion plate 606, causing the water flow to rise and flow towards the inner wall of the arc-shaped protective cover 502. This effectively scours the area near the diversion plate 606 on the inner wall of the arc-shaped protective cover 502. By setting multiple diversion plates 606, the inner wall of the arc-shaped protective cover 502 can be effectively scourned as a whole. In dry weather, atomization can be used... When nozzle 507 performs atomization dust suppression, the solenoid reversing valve is controlled to atomize and spray water from the atomizing nozzle 507. At this time, the high-pressure nozzle 602 cannot spray high-pressure water onto the diverter plate 606. The spring 605 on the diverter plate 606 automatically rebounds and causes the diverter plate 606 to cover the fixing hole 603 again, preventing dust from overflowing from the hole in the fixing hole 603 in dry weather. This enhances the dust suppression effect and protects the high-pressure nozzle 602 from damage caused by stone chips generated during drilling.

[0064] Many rock formations (such as mudstone, shale, and weathered rock) soften, expand, and disintegrate when exposed to water. Large flows of water scouring and soaking the borehole walls can easily lead to borehole instability, collapse, or diameter reduction, causing serious accidents such as stuck drill bits or buried drill bits, and even rendering the borehole unusable. Therefore, it is necessary to reduce the amount of wastewater entering the borehole during inclined drilling to lower the risks during operations.

[0065] When drilling on an inclined slope, the arc-shaped protective cover 502 and the telescopic connecting plate 503 are tilted, with one side of the arc-shaped protective cover 502 continuously positioned downwards. During rainy weather, water sprayed from the inside of the arc-shaped protective cover 502 gradually accumulates inside and cannot drain. At this time, the electric telescopic rod 702 is activated. When the electric telescopic rod 702 is activated, it drives the moving plate 703 to move within the arc-shaped protective cover 502. As the moving plate 703 moves within the telescopic connecting plate 503 towards the side away from the inner wall of the arc-shaped protective cover 502... The telescopic connecting plate 503 can pull the rotating block 704, the telescopic sleeve 705, and the wall scraper 706, so that the bottom of the wall scraper 706 can move on the supporting arc plate 707. The movement of the wall scraper 706 can be limited by the setting of the limiting roller 708. At the same time, when the wall scraper 706 moves, it can contact the inner wall of the arc-shaped protective cover 502, breaking up the adhering sludge and sewage, so that it can flow out through the drainage hole 709 opened at the bottom of the arc-shaped protective cover 502. This prevents a large amount of sewage from re-mixing and flowing into the hole where the drill bit 3 is working when working at an angle, ensuring that the drilled hole can be stable.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A retractable splash guard and spray integrated device for down-the-hole drill rigs, comprising a cylinder (1), an air inlet seat (2), and a drill bit (3), characterized in that: The air intake seat (2) is fixedly connected to a fixing plate (4) above the drill bit (3) on the outside, and also includes: A two-way telescopic rod (501) is fixedly connected to the top of the fixed plate (4). Arc-shaped protective covers (502) are connected to the left and right sides of the two-way telescopic rod (501). A telescopic connecting plate (503) is connected between the two arc-shaped protective covers (502). Atomizing nozzle (507) is located on the outside of the arc-shaped protective cover (502), and a high-pressure nozzle (602) is located on the inside of the arc-shaped protective cover (502). Both the atomizing nozzle (507) and the high-pressure nozzle (602) are connected to an external water pump. The diversion plate (606) is located inside the arc-shaped protective cover (502) to prevent sludge from adhering to the inside of the arc-shaped protective cover (502); A fixed base plate (701) is provided at the bottom of the outer side of the arc-shaped protective cover (502). A driving component is provided at the top of the fixed base plate (701), and a movable plate (703) is provided on the inner side of the arc-shaped protective cover (502). When the driving component is working, it can drive the movable plate (703) to move. The wall scraper (706) is located at the bottom of the arc-shaped protective cover (502). The wall scraper (706) is connected to the movable plate (703). When the movable plate (703) moves, it can drive the wall scraper (706) to move on the inner wall of the arc-shaped protective cover (502). A support arc plate (707) is provided on the inner wall of the arc-shaped protective cover (502) and located below the scraper (706) to support the scraper (706); Drainage hole (709) is provided at the bottom inside of the arc-shaped protective cover (502) and can connect the outside and inside of the arc-shaped protective cover (502).

2. The retractable splash guard and spray integrated device for down-the-hole drilling rigs according to claim 1, characterized in that: It also includes a telescopic assembly (5), which consists of a bidirectional telescopic rod (501), an arc-shaped protective cover (502), a telescopic connecting plate (503), a water inlet pipe (504), a diversion pipe bracket (505), a spray pipe (506), and an atomizing nozzle (507); The bidirectional telescopic rod (501) is fixedly connected to the front and rear sides of the top of the fixed plate (4). The bidirectional telescopic rod (501) has telescopic ends on both the left and right sides. The arc-shaped protective cover (502) is fixedly connected to the telescopic end of the bidirectional telescopic rod (501). The telescopic connecting plate (503) is fixedly connected between two adjacent arc-shaped protective covers (502). The diversion pipe frame (505) is fixedly connected to the top of the arc-shaped protective cover (502). The water inlet pipe (504) is fixedly connected to the top of the diversion pipe frame (505) near the air inlet seat (2). The spray pipe (506) is fixedly connected to the outside of the diversion pipe frame (505). The atomizing nozzle (507) is fixedly connected to the end of the spray pipe (506) away from the spray pipe (506).

3. The retractable splash guard and spray integrated device for down-the-hole drilling rigs according to claim 2, characterized in that: It also includes a cleaning component (6), which consists of a connecting pipe (601), a high-pressure nozzle (602), a fixing hole (603), a fixing ring plate (604), a spring (605), and a diverter plate (606); The connecting pipe (601) is fixedly connected to the side of the spray pipe (506) near the arc-shaped protective cover (502). The high-pressure nozzle (602) is fixedly connected to the end of the connecting pipe (601) away from the spray pipe (506). The fixing hole (603) is opened on the inner wall of the arc-shaped protective cover (502). The fixing ring plate (604) is fixedly connected to the side of the fixing hole (603) away from the spray pipe (506). The spring (605) is fixedly connected to the side of the fixing ring plate (604) away from the connecting pipe (601). The diverter plate (606) is fixedly connected to the other end of the spring (605).

4. The retractable splash guard and spray integrated device for down-the-hole drilling rigs according to claim 3, characterized in that: It also includes a turbulence-disrupting assembly (7), which consists of a fixed base plate (701), an electric telescopic rod (702), a moving plate (703), a rotating block (704), a telescopic sleeve (705), a wall scraper (706), a supporting arc plate (707), a limiting roller (708), and a drainage hole (709); The fixed base plate (701) is fixedly connected to the middle of the bottom outside of the arc-shaped protective cover (502). The electric telescopic rod (702) is fixedly connected to the top of the fixed base plate (701). The electric telescopic rod (702) has a telescopic end. The moving plate (703) is fixedly connected to the telescopic end of the electric telescopic rod (702). The rotating block (704) is rotatably connected to the front and back of the moving plate (703). The telescopic sleeve (705) is fixedly connected to the side of the rotating block (704) away from the moving plate (703). The wall scraper (706) is rotatably connected to the other end of the telescopic sleeve (705). The supporting arc plate (707) is fixedly connected to the bottom inside of the arc-shaped protective cover (502). The limiting roller (708) is rotatably connected to the bottom of the wall scraper (706). The drainage hole (709) is opened at the bottom inside of the arc-shaped protective cover (502).

5. The retractable splash guard and spray integrated device for down-the-hole drilling rigs according to claim 4, characterized in that: A fixing block is provided on the outside of the spray pipe (506). The fixing block is fixedly connected to the arc-shaped protective cover (502) on the side close to the arc-shaped protective cover (502). The spray pipe (506) is fixedly connected to the outer wall of the arc-shaped protective cover (502) through the fixing block.

6. The retractable splash guard and spray integrated device for down-the-hole drilling rigs according to claim 5, characterized in that: The connecting pipe (601) and the high-pressure nozzle (602) are both located in the fixing hole (603). An electromagnetic reversing valve is provided at the connection between the connecting pipe (601) and the spray pipe (506). The electromagnetic reversing valve can be used to select whether the water flow is sprayed through the atomizing nozzle (507) or the high-pressure nozzle (602).

7. The retractable splash guard and spray integrated device for down-the-hole drilling rigs according to claim 6, characterized in that: The fixed annular plate (604) and the spring (605) are both located in the fixed hole (603). The fixed annular plate (604) has a circular groove in the middle. The water column sprayed by the high-pressure nozzle (602) can pass through the middle of the circular groove and impact the diverter plate (606). The diverter plate (606) has an axisymmetric bowl-shaped design, which can make the impacted water column flow outward along the arc surface.

8. The retractable splash guard and spray integrated device for down-the-hole drill rigs according to claim 7, characterized in that: The rotating block (704) is rotatably connected to the front and back of the moving plate (703) via a torsion spring. The wall scraper (706) is rotatably connected to the end of the telescopic sleeve (705) away from the rotating block (704) via a torsion spring. The telescopic sleeve (705) is a telescopic column. The side of the wall scraper (706) away from the telescopic sleeve (705) contacts the inner wall of the arc-shaped protective cover (502).

9. The retractable splash guard and spray integrated device for down-the-hole drilling rigs according to claim 8, characterized in that: The bottom of the scraper (706) contacts the top of the support arc plate (707), and the support arc plate (707) can lift the bottom of the scraper (706). The limiting roller (708) on the side away from the telescopic sleeve (705) continuously rolls in contact with the support arc plate (707).

10. The retractable splash guard and spray integrated device for down-the-hole drilling rigs according to claim 9, characterized in that: The telescopic end of the electric telescopic rod (702) penetrates the outer wall of the arc-shaped protective cover (502) and extends to the inner side of the arc-shaped protective cover (502) and is fixedly connected to the moving plate (703). The electric telescopic rod (702) can drive the moving plate (703) to move inside the arc-shaped protective cover (502).

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