Dry-type drilling three-proofing pneumatic curve conveying device

Abstract

The utility model discloses a dry-type drilling three-proofing pneumatic curve conveying device, which belongs to the technical field of coal mine underground security equipment and comprises a frame body assembly, a drilling machine assembly, a cyclone dust and slag separator, a gas collector, a pneumatic spiral conveying device, a gas collecting pipe and a dust and slag collector. The cyclone dust and slag separator comprises an air inlet box body and a separation barrel, and the separation barrel is communicated with the air inlet box body; the drill rod sequentially penetrates through the air inlet box body and the dust slag collector; the gas collector is connected with the top of the separating cylinder through a dust conveying pipe; and the gas collecting pipe is communicated with the top of the gas collector. The separating cylinder is used for separating dust and slag, the pneumatic spiral conveying device continuously outputs slag, and gas is collected by the gas collecting pipe, so that the three-proofing function of dry type drilling is realized, the potential safety hazard in drilling is solved, power is provided only by underground compressed air, sparks are not generated, and gas explosion is avoided; modularized design is achieved, flexible dismounting and using can be achieved, and practicability is good.

Description

Technical Field

[0001] This utility model belongs to the technical field of underground safety equipment in coal mines, specifically a dry drilling three-proof pneumatic curve conveying device. Background Technology

[0002] Coal mine gas drainage is the main means to solve the problem of large gas outbursts in mines and eliminate the risk of coal seam outbursts. As the mining depth increases, the stress on the coal seam increases. During the drilling process using water-cooled slag removal technology, hole collapse becomes more and more obvious, and blowouts are more and more frequent, which can easily cause injuries. In addition, the water accumulated in the hole is not easy to drain, and the water blockage problem is extremely prominent, which seriously affects the gas drainage effect.

[0003] More and more mines are choosing dry drilling technology to reduce borehole collapse and blowouts, and to avoid the inflow of cleaning fluid into the borehole during drilling. Dry drilling generally uses compressed air for slag removal. During construction, a large amount of coal slag and coal dust are blown out of the hole with compressed air, causing the dust concentration at the drilling site to exceed the standard, which not only affects the health of construction workers but also poses a risk of dust explosion. A large amount of methane gas in the coal seam is blown out of the borehole, and the gas accumulates in the roadway, which can easily poison workers and cause explosions. During high-speed drilling, the drill rod generates heat by friction with the coal wall, which can easily cause spontaneous combustion of the coal seam and produce toxic gases such as carbon monoxide, endangering safe production. As the mining depth increases, the ground pressure increases accordingly, and the amount of gas emitted also increases, and blowouts occur frequently, causing harm to on-site workers. In addition, in coal mines, a large amount of slag discharged from the borehole needs to be manually stopped for transportation, which prevents continuous drilling operations and seriously affects work efficiency. Utility Model Content

[0004] To address the shortcomings of dry drilling, this invention provides a three-proof pneumatic curve conveying device for dry drilling, which can effectively prevent dust, blowouts, and excessive gas levels, and can continuously output coal slag, ensuring safe and efficient operation in the mine.

[0005] This utility model is achieved through the following technical solution.

[0006] A dry drilling pneumatic curved conveying device with three-proof features includes a frame assembly, a drilling rig assembly, a cyclone dust separator, a gas collector, a pneumatic screw conveyor, a gas collection pipe, and a cylindrical dust collector. The drilling rig assembly includes a pneumatic drilling rig and a drill rod fixedly installed on the frame assembly, the drill rod having a hollow structure. The cyclone dust separator includes an air inlet box and a separation cylinder, the side wall of the separation cylinder communicating with the side wall of the air inlet box, and the air inlet box being connected to the dust collector. The drill rod passes through the air inlet box and the dust collector sequentially, with a gap channel between the dust collector and the drill rod. The gas collector is connected to the top of the separation cylinder through a dust conveying pipe, and the gas collection pipe communicating with the top of the gas collector. The pneumatic screw conveyor is located at the bottom of the separation cylinder for conveying slag.

[0007] A further improvement of this utility model is that the above-mentioned pneumatic screw conveyor includes a discharge bin, a pneumatic motor, and a slag collection bin disposed at the bottom of the separation cylinder. The slag collection bin is connected to the discharge bin via a conveying hose. The conveying hose is provided with shaftless screw blades. The two ends of the shaftless screw blades are rotatably connected to the slag collection bin and the discharge bin, respectively. The pneumatic motor is fixedly installed in the discharge bin and is drivenly connected to the shaftless screw blades.

[0008] A further improvement of this utility model is that the opening of the discharge bin is downward and an inclined discharge baffle is provided at the opening; the opening of the slag collection bin is upward.

[0009] A further improvement of this utility model is that a blowout baffle is detachably installed on the side of the air intake box near the pneumatic drill, and the blowout baffle wraps around the outside of the drill rod.

[0010] A further improvement of this utility model is that the upper part of the separation cylinder has a cylindrical structure, and the lower part has a trumpet shape that is larger at the top and smaller at the bottom; the upper side wall of the separation cylinder is connected to the side wall of the air intake box.

[0011] A further improvement of this utility model is that there are two separation cylinders, which are symmetrically installed on both sides of the air intake box.

[0012] A further improvement of this utility model is that the dust collector includes a dust collection pipe, a dust sealing pipe, and a connecting collar connected in sequence; the dust sealing pipe is trumpet-shaped, with its larger opening end connected to the connecting collar, and the connecting collar is connected to the air intake box through a flange.

[0013] A further improvement of this utility model is that the gas collector includes a balancer with a shell structure. The rear side of the balancer is connected to the dust conveying pipe through a gas collecting pipe. The front side of the balancer is open and equipped with a protective net. The upper side of the balancer is equipped with an exhaust pipe connected to the gas collecting pipe. The inner side of the top surface of the balancer is equipped with a rotating frame and a sealing plate fixed to the rotating frame. The outer side of the top surface of the balancer is equipped with a rotating handle fixedly connected to the rotating frame. The rotating handle can drive the rotating frame and the sealing plate to rotate, thereby opening or closing the exhaust pipe channel.

[0014] A further improvement of this utility model is that the inner side of the above-mentioned protective net is provided with a louvered balancer blade, and the upper side of the balancer blade is rotatably connected to the side wall of the balancer.

[0015] A further improvement of this utility model is that the above-mentioned frame assembly includes a frame, a lifting frame, and a pneumatic telescopic cylinder; the lifting frame is slidably connected to the guide rod via an upright guide rod, the two ends of the pneumatic telescopic cylinder are rotatably connected to the lifting frame and the frame respectively, and the pneumatic drilling machine is fixedly installed on the lifting frame; the lifting frame is also provided with a drill rod support seat for supporting the drill rod.

[0016] As can be seen from the above technical solution, the beneficial effects of this utility model are: 1. The frame assembly fixes and installs the pneumatic drill, and the dust collector is inserted into and sealed to prevent dust from escaping and spraying out; high-pressure gas passes through the drill rod, blowing the slag and dust out through the gap between the drill rod and the dust collector, and into the cyclone dust separator; the dust is separated by the cyclone separation principle of the separator cylinder, the heavier slag falls from the bottom of the separator cylinder and is continuously output out through the pneumatic screw conveyor; while the lighter fine dust and gas, under the action of negative pressure, pass through the dust conveying pipe to the gas collector, and are then transported through the gas collector. The gas is collected and treated centrally in a negative pressure gas collection pipe; achieving three-fold protection against dust, blowouts, and excessive gas levels in dry drilling in mines. A pneumatic screw conveyor continuously discharges the slag, comprehensively and systematically solving safety hazards during drilling, reducing labor intensity, and improving work efficiency. The entire mine system uses no electrical components, relying solely on compressed air for power, eliminating sparks and effectively preventing gas explosions. The modular design allows for quick assembly and individual use of components, resulting in a simple structure, ease of use, and flexibility in the confined space of a mine, offering excellent practicality. 2. The pneumatic screw conveyor has a simple structure and high flexibility; the conveying hose can be flexibly arranged according to working conditions, ensuring continuous operation and greatly improving work efficiency. 3. The discharge hopper can be located at the centralized slag treatment position above the mine. A discharge baffle buffers and blocks the slag, reducing its kinetic energy, preventing splashing, and effectively protecting the rear wall of the discharge hopper, ensuring high safety. 4. Sealing the rear of the air intake box with a blowout baffle effectively prevents dust from escaping, buffers its impact, and prevents blowouts, ensuring good safety. 5. Dust and slag blown into the air intake box by the dust collector are separated by the rotating cylinder on the upper side of the separator, effectively achieving dust and slag separation. 6. The symmetrical distribution of the separator cylinders increases the cyclone separation effect, improves separation efficiency, balances overall stress, and ensures the stability of the overall structure. 7. The dust collector is inserted entirely into the borehole, and the borehole is completely sealed by a funnel-shaped dust sealing pipe, effectively preventing dust from escaping. 8. Rotating the handle drives the rotating frame and sealing disc to rotate, opening or closing the exhaust pipe channel. Depending on the gas content, the sealing disc opens or closes the exhaust pipe channel, flexibly adapting to various working conditions. It can be automatically controlled by a control system to ensure continuous operation in a balanced state. 9. The pneumatic telescopic cylinder extends and retracts, driving the lifting frame to slide and rise along the guide rod, realizing flexible adjustment of the position of the pneumatic drill and drill rod, with strong adaptability; the drill rod support seat supports the drill rod, reducing the radial runout of the drill rod and ensuring the quality of drilling; in actual assembly, the cyclone dust separator can be fixedly installed with the lifting frame to ensure the accuracy of installation. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the usage state structure of a specific embodiment of this utility model.

[0019] Figure 2 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the drilling rig assembly installation structure according to a specific embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the dust collector structure according to a specific embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the gas collector structure according to a specific embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the rotating handle structure of a specific embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the structure of the pneumatic screw conveyor device according to a specific embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the cyclone dust separator according to a specific embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the air intake box structure according to a specific embodiment of the present utility model.

[0027] In the attached diagram: 1. Frame assembly, 101. Frame, 102. Guide rod, 103. Lifting frame, 104. Pneumatic telescopic cylinder; 2. Drilling rig assembly, 201. Pneumatic drill, 202. Drill rod, 203. Drill rod support; 3. Cyclone dust separator, 301. Separation cylinder, 302. Air inlet box, 303. Blowout baffle; 4. Gas collector, 401. Balancer, 402. Gas collection pipe, 403. Exhaust pipe, 404. Rotating frame; 4 05. Sealing disc; 406. Rotary handle; 407. Balancer blade; 408. Protective net; 5. Pneumatic screw conveyor; 501. Slag collection bin; 502. Conveying hose; 503. Discharge bin; 504. Pneumatic motor; 505. Shaftless screw blade; 506. Discharge baffle; 6. Dust collector; 601. Dust collection pipe; 602. Dust sealing pipe; 603. Flange; 604. Connecting collar; 7. Dust conveying pipe; 8. Gas collection pipe. Detailed Implementation

[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0029] As attached Figures 1-9 As shown, this utility model discloses a dry drilling three-proof pneumatic curved conveying device, including a frame assembly 1, a drilling rig assembly 2, a cyclone dust separator 3, a gas collector 4, a pneumatic screw conveyor 5, a gas collection pipe 8, and a cylindrical dust collector 6; the drilling rig assembly 2 includes a pneumatic drilling rig 201 and a drill rod 202 fixedly installed on the frame assembly 1, the drill rod 202 having a hollow structure extending from front to back; the cyclone dust separator 3 includes an air inlet box 302 and a separation cylinder 301, the side wall of the separation cylinder 301 being connected to the air inlet box 302. The side walls are connected, and the air intake box 302 is connected to the dust collector 6; the drill rod 202 passes through the air intake box 302 and the dust collector 6 sequentially from back to front, and a gap channel is provided between the dust collector 6 and the drill rod 202; the gas collector 4 is connected to the top of the separation cylinder 301 through the dust conveying pipe 7, and the gas collecting pipe 8 is connected to the top of the gas collector 4; the feed port of the pneumatic screw conveyor 5 is set at the bottom of the separation cylinder 301 for conveying slag, and the feeding direction is generally obliquely upward.

[0030] The frame assembly 1 securely mounts the pneumatic drill 201. The drill rod 202 is mounted on the pneumatic drill 201, and the rear end of the drill rod 202 is connected to a high-pressure air source via a connector. When the drill bit at the front end of the drill rod 202 is drilling, the dust collector 6 is inserted into the borehole and sealed to effectively prevent dust from escaping and spraying out. The high-pressure gas passes through the hollow structure of the drill rod 202, blowing the slag and dust from the borehole outward (backward) through the gap between the drill rod 202 and the dust collector 6, and into the cyclone dust separator 3. The dust and slag are separated by the cyclone separation principle of the separation cylinder 301. The heavier slag falls from the bottom of the separation cylinder 301 and is continuously output outward through the pneumatic screw conveyor 5. The lighter fine dust and gas are transported to the gas collector 4 through the dust conveyor 7 under the action of negative pressure (the gas collection pipe 8 generates negative pressure suction) and then transferred to the negative pressure gas collection pipe 8 for centralized collection and treatment. This dry-drilling, three-proof pneumatic curved conveying device provides three protections against dust, blowouts, and excessive gas levels in dry-drilled mine holes. Furthermore, the pneumatic screw conveyor 5 continuously discharges slag, comprehensively and systematically solving safety hazards during drilling operations, reducing labor intensity, and improving work efficiency. The entire system operates without electrical components underground, relying solely on compressed air for power, thus eliminating sparks and effectively preventing gas explosions. Its modular design allows for quick assembly and individual component use, resulting in a simple structure, ease of use, and flexibility in the confined spaces of mines, making it highly practical.

[0031] The pneumatic screw conveyor 5 includes a discharge bin 503, a pneumatic motor 504, and a slag collection bin 501 located at the bottom of the separation cylinder 301. The slag collection bin 501 is connected to the discharge bin 503 via a conveying hose 502. A shaftless screw blade 505 is installed inside the conveying hose 502. Both ends of the shaftless screw blade 505 are rotatably connected to the slag collection bin 501 and the discharge bin 503 respectively (bearings can be used). The pneumatic motor 504 is fixedly installed to the discharge bin 503 and is drively connected to the shaftless screw blade 505 (a transmission belt can be used). The pneumatic screw conveyor 5 has a simple structure, is easy to use, and is highly flexible. The conveying hose 502 can be flexibly arranged according to working conditions, and the shaftless screw blade 505 driven by the pneumatic motor 504 continuously outputs slag, ensuring uninterrupted operation and greatly improving work efficiency. Furthermore, it is pneumatically driven, with no electrical components, effectively avoiding the risk of gas explosion.

[0032] The discharge hopper 503 opens downwards and is equipped with an inclined discharge baffle 506 at its opening; the slag collection hopper 501 opens upwards. The discharge hopper 503 can be located at a centralized slag treatment location above the mine. The discharge baffle 506 buffers and blocks the slag, reducing its kinetic energy, preventing slag splashing, and effectively protecting the rear wall of the discharge hopper 503, ensuring good safety. The front side of the discharge baffle 506 can be covered with an elastic rubber pad to increase cushioning performance and reduce collision noise.

[0033] A blowout preventer 303 is detachably installed on the side of the air intake housing 302 near the pneumatic drill 201. The blowout preventer 303 can wrap around (fit) the outside of the drill rod 202, and is preferably a copper plate. By sealing the rear side of the air intake housing 302 with the blowout preventer 303, dust can be effectively prevented from escaping, its impact force can be buffered, and blowouts can be effectively prevented, ensuring good safety. The blowout preventer 303 is a disposable consumable; it can be directly replaced after the drill rod 202 wears out during high-speed rotation, which is simple and convenient.

[0034] The upper part of the separator 301 is cylindrical, and the lower part is funnel-shaped, wider at the top and narrower at the bottom. The upper side wall of the separator 301 is connected to the side wall of the air inlet box 302. The axis of the dust collector 6 is tangent to the upper side wall of the separator 301. The dust and slag blown out of the dust collector 6 into the air inlet box 302 have an axis tangent to the inner wall of the separator 301. After being separated by the rotation of the upper cylindrical part of the separator 301, the fine dust and gas are sucked away from the top by negative pressure, while the heavier slag falls into the slag collection bin 501 from the bottom and is transported out by the pneumatic screw conveyor 5. The structure is simple and effectively achieves dust and slag separation. If the gas and a large amount of coal slag in the borehole are directly pumped into the gas collection pipe 8, the coal slag is likely to accumulate and block the pipeline, causing a safety accident.

[0035] There are two separator cylinders 301, which are symmetrically installed on both sides of the air intake box 302. The symmetrical distribution of the separator cylinders 301 can increase the cyclone separation effect, improve the separation efficiency, and balance the overall force, ensuring the stability of the overall structure.

[0036] The dust collector 6 includes a dust collection pipe 601, a dust sealing pipe 602, and a connecting collar 604 connected in sequence. The dust sealing pipe 602 is funnel-shaped, with its larger opening end connected to the connecting collar 604 via a flange 603. The connecting collar 604 is connected to the air inlet box 302 via the flange 603. The dust collection pipe 601 is a cylindrical copper pipe. In use, the dust collector 6 is inserted entirely into the drill hole, and the funnel-shaped (conical) dust sealing pipe 602 tightly seals the drill hole, effectively preventing dust from escaping. The connecting collar 604 is an elastic telescopic tube, ensuring a certain amount of elastic expansion and contraction during drilling, providing shock absorption and buffering performance, reducing the impact of vibration on the cyclone dust separator 3, and ensuring the overall stability and reliability of operation.

[0037] The frame assembly 1 includes a frame 101, a lifting frame 103, and a pneumatic telescopic cylinder 104. The lifting frame 103 is slidably connected to the vertical guide rod 102. The two ends of the pneumatic telescopic cylinder 104 are rotatably connected to the lifting frame 103 and the frame 101, respectively. The pneumatic drill 201 is fixedly installed on the lifting frame 103. The lifting frame 103 is also provided with a drill rod support seat 203 to support the drill rod 202. By extending and retracting the pneumatic telescopic cylinder 104, the lifting frame 103 is driven to slide and rise along the guide rod 102, realizing flexible adjustment of the positions of the pneumatic drill 201 and the drill rod 202, which is highly adaptable. The drill rod support seat 203 supports the drill rod 202, effectively reducing the radial runout of the drill rod 202 and ensuring the quality of drilling. In actual assembly, the cyclone dust separator 3 can be fixedly installed with the lifting frame 103 to ensure the accuracy and reliability of the installation.

[0038] The gas collector 4 includes a rectangular shell-shaped balancer 401. The balancer 401 is connected to the dust conveying pipe 7 via a gas collecting pipe 402 at its upper rear side. The balancer 401 has an opening at the front and is equipped with a protective net 408 to prevent external coal slag from entering. An exhaust pipe 403 connected to the gas collecting pipe 8 is located on the upper side of the balancer 401. A rotating frame 404 and a sealing disc 405 fixed to the rotating frame 404 are located on the inner side of the top surface of the balancer 401. A rotating handle 406 fixedly connected to the rotating frame 404 is located on the outer side of the top surface of the balancer 401. A louvered balancer blade 407 is located inside the protective net 408, and the upper side of the balancer blade 407 is rotatably connected to the side wall of the balancer 401.

[0039] Preferably, the exhaust pipe 403 is configured as three in a ring array, with a rotating frame 404 and a rotating handle 406 connected at its center by a coupling. The sealing disc 405 is also configured as three in a ring array, corresponding to the through hole of the exhaust pipe 403. When the rotating handle 406 is rotated, it drives the rotating frame 404 and the sealing disc 405 to rotate, opening or closing the passage of the exhaust pipe 403.

[0040] A cylinder that drives the rotary handle 406 to reciprocate can be connected to it for automatic control.

[0041] Depending on the gas content, the sealing disc 405 can be used to open or close the exhaust pipe 403 channel, making it flexible and applicable to various working conditions. A gas monitoring device can be installed inside the dust conveying pipe 7, and a material accumulation height detection device can be installed in the slag collection bin 501. The gas monitoring device and the material accumulation height detection device are connected to the control system, which in turn controls the pneumatic drill 201, cylinder, and pneumatic motor 504. Based on the detected gas content, the cylinder is controlled to extend or retract, causing the sealing disc 405 to open or close the exhaust pipe 403 channel. Based on the detected slag flow rate, the speed of the pneumatic motor 504 is controlled, thereby controlling the conveying flow rate of the shaftless spiral blade 505 and ensuring continuous operation in a balanced state.

[0042] Specifically: 1. In situations with high dust levels and no gas emission, such as in semi-rock / semi-coal roadway conditions, the focus is on dust removal. The control system controls the cylinder to actuate, and the sealing plate 405 closes the exhaust pipe 403 channel. Dust is effectively removed through the cyclone dust separator 3, while the balancer blades 407 open under internal air pressure to effectively discharge the separated air. 2. In situations with high dust levels and gas emission, such as in coal roadway in-seam borehole conditions, the focus is on dust removal and gas control. The control system controls the cylinder to actuate, and the sealing plate 405 opens the exhaust pipe 403 channel. Dust is effectively removed through the cyclone dust separator 3, and internal gas is collected under negative pressure in the gas collection pipe 8. Due to the weight of the balancer blades 407 and the internal negative pressure, they remain in a closed state to prevent gas from escaping.

[0043] The opening size of the exhaust pipe 403 channel can be controlled according to the gas emission rate to flexibly adapt to various working conditions.

[0044] This dry drilling three-proof pneumatic curved conveying device blows slag and dust outward through the gap between the drill rod and the dust collector, entering the cyclone dust separator. The dust is separated by the cyclone separation principle of the separator cylinder. Heavier slag falls from the bottom of the separator cylinder and is continuously output by the pneumatic screw conveyor; while lighter fine dust and methane gas, under negative pressure, travel through the dust conveying pipe to the methane collector, and then through the methane collector to the negative pressure methane collection pipe for centralized collection and treatment. This achieves three-proof protection for dry drilling in mines. With its three-fold protection functions—dust prevention, blowout prevention, and gas over-limit prevention—and the ability to continuously discharge slag via a pneumatic screw conveyor, it comprehensively and systematically solves the safety hazards during drilling operations, reduces labor intensity, and improves work efficiency. The entire mine has no electrical components; it relies solely on underground compressed air for power, eliminating sparks and effectively preventing gas explosion hazards. Its modular design allows for quick assembly and individual use of components, resulting in a simple structure, convenient operation, and flexible use in the confined space of a mine, making it highly practical.

[0045] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0046] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this utility model, are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dry drilling three-proof pneumatic curve conveying device, characterized in that, The system includes a frame assembly (1), a drilling rig assembly (2), a cyclone dust separator (3), a gas collector (4), a pneumatic screw conveyor (5), a gas collection pipe (8), and a cylindrical dust collector (6); the drilling rig assembly (2) includes a pneumatic drilling rig (201) and a drill rod (202) fixedly installed on the frame assembly (1), the drill rod (202) having a hollow structure; the cyclone dust separator (3) includes an air inlet box (302) and a separation cylinder (301), the side wall of the separation cylinder (301) being flush with the side wall of the air inlet box (302). The air intake box (302) is connected to the dust collector (6) through the wall; the drill rod (202) passes through the air intake box (302) and the dust collector (6) in sequence, and a gap channel is provided between the dust collector (6) and the drill rod (202); the gas collector (4) is connected to the top of the separation cylinder (301) through the dust conveying pipe (7), and the gas collecting pipe (8) is connected to the top of the gas collector (4); the pneumatic screw conveyor (5) is set at the bottom of the separation cylinder (301) for conveying slag.

2. The dry drilling three-proof pneumatic curve conveying device according to claim 1, characterized in that, The pneumatic screw conveyor (5) includes a discharge bin (503), a pneumatic motor (504), and a slag collection bin (501) located at the bottom of the separation cylinder (301). The slag collection bin (501) is connected to the discharge bin (503) via a conveying hose (502). The conveying hose (502) is provided with shaftless screw blades (505). The two ends of the shaftless screw blades (505) are rotatably connected to the slag collection bin (501) and the discharge bin (503) respectively. The pneumatic motor (504) is fixedly installed in the discharge bin (503) and is drivenly connected to the shaftless screw blades (505).

3. The dry drilling three-proof pneumatic curve conveying device according to claim 2, characterized in that, The discharge bin (503) has an opening facing downwards, and its opening is provided with an inclined discharge baffle (506); the slag collection bin (501) has an opening facing upwards.

4. The dry drilling three-proof pneumatic curve conveying device according to claim 1, characterized in that, A blowout preventer (303) is detachably installed on the side of the air intake box (302) near the pneumatic drill (201), and the blowout preventer (303) is wrapped around the outside of the drill rod (202).

5. The dry drilling three-proof pneumatic curve conveying device according to claim 1, characterized in that, The upper part of the separator (301) is cylindrical, and the lower part is flared, wider at the top and narrower at the bottom; the upper side wall of the separator (301) is connected to the side wall of the air intake box (302).

6. The dry drilling three-proof pneumatic curve conveying device according to claim 1, characterized in that, There are two separator cylinders (301), which are symmetrically installed on both sides of the air intake box (302).

7. The dry drilling three-proof pneumatic curve conveying device according to claim 1, characterized in that, The dust collector (6) includes a dust collection pipe (601), a dust sealing pipe (602), and a connecting collar (604) connected in sequence; the dust sealing pipe (602) is trumpet-shaped, and its larger opening end is connected to the connecting collar (604), and the connecting collar (604) is connected to the air intake box (302) through a flange (603).

8. The dry drilling three-proof pneumatic curve conveying device according to claim 1, characterized in that, The gas collector (4) includes a balancer (401) with a shell structure. The rear side of the balancer (401) is connected to the dust conveying pipe (7) through a gas collecting pipe (402). The front side of the balancer (401) is open and equipped with a protective net (408). The upper side of the balancer (401) is equipped with an exhaust pipe (403) connected to the gas collecting pipe (8). The inner side of the top surface of the balancer (401) is equipped with a rotating frame (404) and a sealing plate (405) fixed to the rotating frame (404). The outer side of the top surface of the balancer (401) is equipped with a rotating handle (406) fixedly connected to the rotating frame (404). The rotating handle (406) can drive the rotating frame (404) and the sealing plate (405) to rotate, opening or closing the exhaust pipe (403) channel.

9. The dry drilling three-proof pneumatic curve conveying device according to claim 8, characterized in that, The protective net (408) has a louvered balancer blade (407) on its inner side, and the upper side of the balancer blade (407) is rotatably connected to the side wall of the balancer (401).

10. The dry drilling three-proof pneumatic curve conveying device according to claim 1, characterized in that, The frame assembly (1) includes a frame (101), a lifting frame (103), and a pneumatic telescopic cylinder (104); the lifting frame (103) is slidably connected to the guide rod (102) via an upright guide rod (102), and the two ends of the pneumatic telescopic cylinder (104) are rotatably connected to the lifting frame (103) and the frame (101) respectively; the pneumatic drill (201) is fixedly installed on the lifting frame (103); the lifting frame (103) is also provided with a drill rod support seat (203) to support the drill rod (202).

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