Blowout prevention hole device for gas extraction drilling

Abstract

The invention is applicable to the technical field of mineral exploitation, and provides a gas extraction drilling hole blowout prevention device which comprises a drilling pipeline, drilling equipment is arranged at one end of the drilling pipeline, the other end of the drilling pipeline extends into a mine hole and is detachably connected with a drill bit, and a turbulent flow assembly is arranged on the drilling pipeline in the mine hole and is detachably connected with the drill bit. The spoiler assembly is arranged on the side, away from the drill bit, of the spoiler assembly, a sealing mechanism is further arranged on the side, away from the drill bit, of the spoiler assembly, the spoiler assembly is used for relieving the hole spraying speed of mining materials in the mine hole, the sealing mechanism is used for blocking the mining materials and limiting drilling hole spraying, and the spoiler plates arranged on the drilling pipeline are used for relieving the gushing strength of the mining materials during drilling. And the strength of exploiting materials impacting on the sealing mechanism is reduced, so that the sealing performance between the sealing mechanism and the inner wall of the mine hole is guaranteed, the phenomenon of drilling and hole spraying in the exploiting process is avoided, the possibility of methane leakage is reduced, and meanwhile the personal safety of constructors is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of mineral mining, and in particular relates to a gas extraction drilling hole anti-blowout hole device. Background Art

[0002] Gas is formed by the decomposition of cellulose and organic matter by anaerobic bacteria in the early stage of ancient plants being accumulated into coal. In a high temperature and high pressure environment, while coal is being formed, gas continues to be generated due to physical and chemical effects. During the gas extraction process, as the depth of the mine extends, a large amount of coal powder and gas will be continuously ejected from the borehole in a short period of time, which is called borehole ejection. A large amount of gas gushing out of the borehole in a short period of time will cause the roadway gas to exceed the standard, which may lead to serious consequences that seriously damage the personal safety of construction workers.

[0003] The Chinese invention patent with publication number CN110374542A is a mine gas extraction drilling anti-blowout hole device, including a drill bit, a casing, a drilling rig and a slag storage box. The drill bit is provided with a casing, a conical platform is processed in the middle of the casing, a sealing rubber ring is provided on the casing, a sleeve is also provided on the casing, a clamping nut is provided on the casing, the clamping nut abuts against the sleeve, a drilling rig is installed on the right end of the casing, a discharge hole is opened on the casing, the discharge hole is connected with the slag storage box through a telescopic hose, a filter is installed inside the slag storage box, a gas storage tank is provided on the right side of the slag storage box, and a cleaning mechanism is also provided on the outside of the slag storage box. By rotating the clamping nut, the surface of the sealing rubber ring is raised, so that the sealing rubber ring is closely abutted against the inner wall of the borehole to prevent gas from escaping. The sealing effect is good, the installation speed is fast, and the work efficiency is greatly improved. The filter is used to filter the gas, and the gas storage tank is used to collect the gas. The filter can be rinsed by setting a cleaning mechanism.

[0004] However, the above-mentioned comparative documents have the following technical problems in actual use:

[0005] 1. When the above-mentioned device is used to extract gas, the sealing rubber ring is squeezed by tightening the nut, causing it to deform and expand so as to seal in the borehole. However, the expanded sealing rubber ring lacks necessary filling materials inside, so it will still deform when subjected to strong pressure, resulting in a gap between the borehole and the sealing rubber ring. When a gas spray hole appears, the huge pressure will drive part of the gas to leak from the gap, and thus the sealing during drilling cannot be effectively guaranteed.

[0006] Second, in the above device, the coal powder and dust contained in the gas are isolated by a filter, and then the filter is cleaned by water. However, some dust will remain in the filter holes on the filter. In addition, the above-mentioned multiple L-shaped nozzles are distributed at equal angles below the nozzle, which causes the filter below the nozzle to be out of the coverage range of the multiple nozzles, and thus the dust remaining in the filter holes cannot be effectively cleaned, affecting the screening effect of the filter. Summary of the invention

[0007] The present invention provides a gas extraction drilling hole anti-blowout hole device, which aims to solve the problem mentioned in the above-mentioned background technology that there is still a certain gap inside the sealing rubber ring after being squeezed. When the high-pressure gas gushes onto the sealing rubber ring, the sealing rubber ring will be deformed again, driving the appearance of a gap between the sealing rubber ring and the inner wall of the borehole for gas to spray out, resulting in poor sealing. At the same time, due to the problem of the position setting of multiple L-shaped nozzles of the nozzle in the above-mentioned device, the sprayed water cannot cover the entire filter net, and thus the dust remaining in the filter hole cannot be effectively cleaned.

[0008] The present invention is implemented as follows: a gas extraction drilling hole anti-blowout device comprises: a drilling pipeline, one end of which is provided with a drilling device, and the other end extends into the mine cave and is detachably connected to a drill bit, a spoiler component is provided on the drilling pipeline in the mine cave, and a sealing mechanism is also provided on the side away from the drill bit, the spoiler component is used to alleviate the blowout speed of the mined material in the mine cave, and the sealing mechanism is used to block the mined material and limit the drilling hole blowout, a processing mechanism, which has: a discharge screening component connected to the drilling pipeline, which is used to dredge the mined material to the outside and screen and separate the mined material, and a cleaning component is also provided on one side of the discharge screening component, which is used to clean the The discharge screening component is described; in this scheme, the drilling and mining pipeline is inserted into the mine cave, and the drilling equipment is used to control the rotation of the drill bit to perform drilling operations. During drilling, the spoiler component is used to alleviate the gushing speed of the mined material during drilling, and the mine cave is sealed by a sealing mechanism to prevent the mined material from having a spray hole phenomenon. In addition, the mined mined material enters the discharge screening component along the drilling and mining pipeline, and the methane, coal ash, drill cuttings and other impurities in the mined material are screened and cleaned through the discharge screening component. When the screening work continues for a period of time, impurities such as coal ash and drill cuttings will accumulate on the filter screen plate, causing the filter screen plate to be blocked. The filter screen plate can be cleaned subsequently by a cleaning component to ensure the normal operation of the subsequent filter screen plate.

[0009] Preferably, the spoiler assembly includes: a plurality of spoiler plates arranged at equal angles around the outside of the drilling and production pipe, and a connecting ring is fixedly connected to the outer wall of the drilling and production pipe corresponding to the bottom of the plurality of spoiler plates, and the bottom ends of the plurality of spoiler plates are rotatably connected to the connecting ring. An adjusting member is also arranged on the outer wall of the drilling and production pipe corresponding to the plurality of spoiler plates, which comprises: an adjusting sleeve hinged on the outer wall of the drilling and production pipe, and a movable rod hinged on the side wall of the spoiler plate, a receiving groove is provided on the side wall of the adjusting sleeve, a return spring is arranged in the groove, one end of the movable rod is received in the receiving groove and abuts against the return spring; in this scheme, when the mined material in the mine gushes upward along the drill bit, it will contact There are multiple spoilers. Under normal conditions, the bottom end of the spoiler is hinged on the connecting ring, and the top end is flipped under the influence of the reset spring and flipped in the direction away from the drilling pipe (close to the inner wall of the mine). When the gushing mined material hits the spoiler, under the strong impact force of the mined material, the top end of the spoiler will flip toward the outer wall of the drilling pipe, and the distance between the top end and the inner wall of the mine will increase. While flipping, the movable rod contracts into the accommodating groove and squeezes the reset spring at the same time. Under the rebound kinetic energy of the reset spring, a reverse movement force will be applied to the spoiler, thereby alleviating the impact force of the mined material gushing over the above distance, so as to avoid causing excessive impact interference to the subsequent sealing mechanism, thereby ensuring the sealing performance of the subsequent sealing mechanism.

[0010] Preferably, the sealing mechanism comprises: a plugging component arranged on the outer wall of the drilling and production pipe, one side of which is also provided with an extrusion component movably mounted on the outer wall of the drilling and production pipe, wherein the plugging component comprises: a sliding part arranged on the outer wall of the drilling and production pipe, a first fixing ring is fixedly mounted on the outer side of the sliding part, and a second fixing ring slidably connected to the outer side of the sliding part is also provided on one side of the sliding part, the outer side of the sliding part is also wrapped with a sealing rubber, the two ends of which are respectively fixed to the first fixing ring and the second fixing ring, and a cavity is reserved between the sealing rubber and the sliding part , and the sealing rubber is provided with a connecting nozzle connected to the cavity; in this scheme, compressed air or water is input into the above-mentioned cavity through the connecting nozzle to fill the entire cavity, and then the second fixing ring is slid in the direction of the first fixing ring, the sealing rubber is squeezed and deformed, and the inner cavity thereof changes and then expands laterally under the push of compressed air (or water), so that the outer wall of the sealing rubber is attached to the inner wall of the mine hole, thereby blocking the upper and lower spaces of the sealing rubber, preventing the formation of gaps between the sealing rubber and the mine hole during mining operations, thereby further avoiding the phenomenon of drilling spray holes.

[0011] It should be explained that since compressed air or water is arranged in the above-mentioned cavity to fill the entire cavity, the sealing rubber will not be subjected to strong impact force and be compressed and deformed toward the drilling pipe when the mined material is gushing, thereby ensuring the sealing of the device in the mine.

[0012] Preferably, at least one reset member is provided between the first fixing ring and the second fixing ring, and comprises: a telescopic sleeve fixedly connected to the bottom wall of the second fixing ring, and a slot is provided on the bottom wall thereof; an insertion rod is vertically mounted on the top wall of the first fixing ring, and a top end of the insertion rod extends into the slot and is fixedly connected to a limiting block, and a telescopic spring is provided between the top wall of the limiting block and the top wall of the slot; in this scheme, when the second fixing ring moves toward the first fixing ring, the insertion rod will partially shrink toward the slot, and at the same time, the limiting block at the top end of the insertion rod squeezes the telescopic spring, and the telescopic spring is compressed, and when the pressure on the second fixing ring is subsequently lost, under the elastic reset of the telescopic spring, the second fixing ring slides on the sliding part in a direction away from the first fixing ring, and the sealing rubber shrinks toward the drilling pipeline, so as to facilitate the removal of the device from the mine.

[0013] Preferably, the extrusion assembly includes: a threaded portion opened on the outer wall of the drilling pipe, a sleeve being threaded on the outer side thereof, the bottom end of the sleeve abutting against the second fixing ring, and a rotating handle being further provided on the outer wall of the sleeve; in this scheme, when the construction personnel hold the rotating handle and rotate it horizontally, the sleeve is controlled to rotate on the threaded portion, and when the sleeve moves toward the second fixing ring, it will abut against the second fixing ring and force it to move toward the first fixing ring, and conversely, when the sleeve moves away from the second fixing ring, the second fixing ring moves away from the first fixing ring under the drive of the reset member.

[0014] Preferably, the discharge screening assembly comprises: a discharge pipe arranged on the outer wall of the drilling and production pipeline, and an inlet is also provided on the outer wall of the drilling and production pipeline between the sealing mechanism and the spoiler assembly, one end of the discharge pipe is connected to the inlet, a screening box body, a mounting frame is horizontally fixedly connected therein, and a filter screen plate is arranged in the mounting frame, the other end of the discharge pipe extends to the bottom of the filter screen plate, and a discharge pipe is also connected to the outer wall of the screening box body above the filter screen plate, and the bottom wall of the screening box body A discharge port is also formed on the surface; in this scheme, the mined materials in the mine are intercepted by the sealing mechanism after flowing through the spoiler assembly, and then flow into the discharge pipe through the inlet on the drilling and production pipeline, and then transported to the screening box through the discharge pipe. The mined materials are transported along the discharge pipe to the bottom of the filter screen plate, wherein impurities such as coal ash and drill cuttings in the mined materials will be screened out by the filter screen plate and move toward the discharge port at the bottom, while methane will flow through the filter screen plate into the discharge pipe, and then flow into the external collection equipment through the discharge pipe to complete the subsequent unified collection and treatment.

[0015] Preferably, the cleaning component comprises: a water tank arranged at one side of the screening box body, a water pump assembly is arranged therein, a water delivery pipe is connected to the water pump assembly, one end of the water delivery pipe extends into the screening box body and is connected to a water storage box, which is located above the filter screen plate, and is connected to a plurality of drainage pipes at equal intervals along the length of the water storage box, and a plurality of nozzles are arranged at the bottom of each drainage pipe; in this scheme, after the filter screen plate has been working for a period of time, a large amount of impurities such as coal ash and drill cuttings will be attached to its surface, thereby clogging the filter holes on the filter screen plate and affecting the subsequent filtering effect of methane, and then the water pump assembly can be used to draw the water in the water tank into the water delivery pipe, and then transport it to the water storage box through the water delivery pipe, the water storage box evenly distributes the water into each drainage pipe, and then uses a plurality of nozzles at the bottom of the drainage pipe to spray it, the sprayed water falls onto the filter screen plate, flushes the filter screen plate, so that the impurities attached to the filter holes are flushed into the discharge port, and the normal operation of the filter screen plate is ensured.

[0016] It needs to be explained that multiple drainage pipes are arranged in sequence along the length direction of the side wall of the water storage box, each two adjacent drainage pipes are parallel to each other, and each drainage pipe is arranged perpendicular to the water storage box. At the same time, the length of each drainage pipe is consistent with the length of the filter screen plate.

[0017] Preferably, each of the nozzles is provided with a flow diffusion assembly, which comprises: a ring sleeved on the outside of the nozzle, and a mounting plate is horizontally arranged below the water outlet of the nozzle, the mounting plate and the ring are fixedly connected by a connecting plate, and a flow diffusion plate is also fixedly installed on the mounting plate; in this scheme, the water sprayed through the nozzle will fall on the flow diffusion plate, and the flow diffusion plate is conical in design, so it will diffuse the water and make it spray in a fan shape. By arranging the flow diffusion plate under each nozzle, the spraying range of the water is increased, the dead angle when the water is sprayed is reduced, and the filter screen plate is cleaned in all aspects.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: a gas extraction drilling hole anti-blowout hole device of the present invention:

[0019] 1. Multiple spoilers are installed on the drilling pipeline to alleviate the gushing intensity of the mined materials during drilling, and reduce the intensity of the mined materials impacting the sealing mechanism, thereby ensuring the sealing between the sealing mechanism and the inner wall of the mine, avoiding the phenomenon of drilling holes during the mining process, reducing the possibility of methane leakage, and ensuring the personal safety of construction workers.

[0020] 2. By driving the extrusion component on the drilling and production pipeline to move toward the plugging component, the plugging component is deformed, forcing the plugging component to expand laterally, and the outer wall of the plugging component is attached to the inner wall of the mine to prevent leakage. At the same time, the plugging component is filled with compressed air or water, which can effectively avoid the pressure on the plugging component when the mined material gushes violently, and avoid the plugging component from being squeezed and deformed under the powerful gushing of the mined material, thereby forming a gap between the plugging component and the inner wall of the mine.

[0021] 3. The water sprayed from the nozzle will fall on the diffuser plate. The diffuser plate is conical in design, so it will diffuse the water and make it spray in a fan shape. By arranging a diffuser plate under each nozzle, the spraying range of the water is increased, the dead angle when the water is sprayed is reduced, and the filter screen plate can be cleaned in all aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the present invention;

[0023] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the sealing mechanism in the present invention;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 5 is a schematic diagram of a spoiler assembly in the present invention and a partial enlarged diagram thereof;

[0027] Figure 6 It is a schematic diagram and a partial enlarged diagram of the processing mechanism in the present invention;

[0028] In the figure:

[0029] 1. Drilling pipeline; 11. Drill bit; 12. Drilling equipment;

[0030] 2. Mine cave;

[0031] 3. spoiler assembly; 31. spoiler; 32. connecting ring; 33. adjusting member; 331. adjusting sleeve; 332. movable rod; 333. receiving groove; 334. return spring;

[0032] 4. Sealing mechanism; 41. Blocking assembly; 411. Sliding portion; 412. First fixing ring; 413. Second fixing ring; 414. Sealing rubber; 415. Cavity; 416. Connecting nozzle; 42. Extrusion assembly; 421. Threaded portion; 422. Screw sleeve; 423. Rotating handle; 43. Resetting member; 431. Telescopic sleeve; 432. Slotted hole; 433. Inserting rod; 434. Stop block; 435. Telescopic spring;

[0033] 5. Processing mechanism; 51. Discharge screening assembly; 511. Discharge pipe; 512. Feed inlet; 513. Screening box; 514. Mounting frame; 515. Filter screen plate; 516. Discharge pipe; 517. Discharge outlet; 52. Cleaning assembly; 521. Water tank; 522. Water pump assembly; 523. Water pipe; 524. Water storage box; 525. Drainage pipe; 526. Nozzle; 53. Flow expansion assembly; 531. Ring; 532. Mounting plate; 533. Flow expansion plate. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0036] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] See also Figure 1-6 The present invention provides a technical solution: a gas extraction drilling hole anti-blowout device, comprising: a drilling and production pipeline 1, one end of which is provided with a drilling and production device 12, and the other end extends into a mine cave 2 and is detachably connected to a drill bit 11, a spoiler component 3 is provided on the drilling and production pipeline 1 in the mine cave 2, and a sealing mechanism 4 is also provided on the side away from the drill bit 11, the spoiler component 3 is used to alleviate the blowout speed of the mined material in the mine cave 2, and the sealing mechanism 4 is used to block the mined material and limit the drilling hole blowout, a processing mechanism 5, which has: a discharge screening component 51 connected to the drilling and production pipeline 1, which is used to dredge the mined material to the outside and screen and separate the mined material, and a cleaning component 52 is also provided on one side of the discharge screening component 51, which is used to clean the discharge screening component 51.

[0040] Specifically, the device is also provided with an external collection device, which may be a gas storage tank, which is connected to the discharge pipe 516 to collect the filtered methane.

[0041] Furthermore, the spoiler assembly 3 includes: a plurality of spoiler plates 31 arranged at equal angles around the outside of the drilling and production pipe 1, and a connecting ring 32 is fixedly connected to the outer wall of the drilling and production pipe 1 corresponding to the bottom of the plurality of spoiler plates 31, and the bottom ends of the plurality of spoiler plates 31 are rotatably connected to the connecting ring 32. An adjusting member 33 is also arranged on the outer wall of the drilling and production pipe 1 corresponding to the plurality of spoiler plates 31, and the adjusting member 33 comprises: an adjusting sleeve 331 hinged on the outer wall of the drilling and production pipe 1, and a movable rod 332 hinged on the side wall of the spoiler plate 31, a accommodating groove 333 is opened on the side wall of the adjusting sleeve 331, and a reset spring 334 is arranged therein, and one end of the movable rod 332 is accommodated in the accommodating groove 333 and abuts against the reset spring 334.

[0042] Specifically, a torsion spring may be used to connect the bottom end of the spoiler 31 and the connecting ring 32, so that after being turned over, the spoiler 31 can be quickly reset in cooperation with the reset spring 334, while also preventing the card material from being deformed due to severe impact.

[0043] Furthermore, the sealing mechanism 4 includes: a plugging component 41 arranged on the outer wall of the drilling and production pipe 1, one side of which is also provided with an extrusion component 42 movably installed on the outer wall of the drilling and production pipe 1, wherein the plugging component 41 includes: a sliding portion 411 arranged on the outer wall of the drilling and production pipe 1, a first fixing ring 412 is fixedly installed on the outer side of the sliding portion 411, and one side of the sliding portion 411 is also provided with a second fixing ring 413 slidably connected to the outer side of the sliding portion 411, the outer side of the sliding portion 411 is also wrapped with a sealing rubber 414, and its two ends are respectively fixed to the first fixing ring 412 and the second fixing ring 413, a cavity 415 is reserved between the sealing rubber 414 and the sliding portion 411, and a connecting mouth 416 connecting the cavity 415 is provided on the sealing rubber 414.

[0044] Furthermore, at least one reset member 43 is provided between the first fixing ring 412 and the second fixing ring 413, and comprises: a telescopic sleeve 431 fixedly connected to the bottom wall of the second fixing ring 413, and a slot 432 is provided on the bottom wall thereof; an insert rod 433 is vertically installed on the top wall of the first fixing ring 412, and the top end of the insert rod 433 extends into the slot 432 and is fixedly connected to a limit block 434; a telescopic spring 435 is provided between the top wall of the limit block 434 and the inner top wall of the slot 432.

[0045] Furthermore, the extrusion assembly 42 includes: a threaded portion 421 opened on the outer wall of the drilling pipe 1, a screw sleeve 422 is screwed on the outer side thereof, the bottom end of the screw sleeve 422 abuts against the second fixing ring 413, and a rotating handle 423 is also provided on the outer wall of the screw sleeve 422.

[0046] The outer wall of the rotating handle 423 may also be provided with anti-skid patterns, which can increase the contact area between the rotating handle 423 and the staff's hand, thereby avoiding undesirable phenomena such as slipping when the rotating handle 423 is rotated.

[0047] Furthermore, the discharge screening component 51 includes: a discharge pipe 511 arranged on the outer wall of the drilling and production pipeline 1, and an inlet 512 is also opened on the outer wall of the drilling and production pipeline 1 between the sealing mechanism 4 and the spoiler component 3, one end of the discharge pipe 511 is connected to the inlet 512, a screening box 513, in which a mounting frame 514 is horizontally fixed, and a filter screen plate 515 is arranged in the mounting frame 514, the other end of the discharge pipe 511 extends to the bottom of the filter screen plate 515, and a discharge pipe 516 is also connected to the outer wall of the screening box 513 above the filter screen plate 515, and a discharge port 517 is also formed on the bottom wall of the screening box 513.

[0048] Specifically, a sealing cover may be detachably connected to the bottom wall of the screening box 513. The sealing cover and the screening box 513 may be fixed by a threaded connection. The sealing cover is sealingly connected to the discharge port 517. When the device performs screening, the sealing cover and the cover are arranged on the discharge port 517 to intercept impurities such as drill cuttings and coal ash. When the screening work is completed, the sealing cover can be removed to achieve unified collection and treatment of impurities such as coal ash and drill cuttings.

[0049] Furthermore, the cleaning component 52 includes: a water tank 521 arranged on one side of the screening box 513, in which a water pump component 522 is arranged, and the water pump component 522 is connected to a water pipe 523, one end of the water pipe 523 extends into the screening box 513, and is connected to a water storage box 524, which is located above the filter screen plate 515, and a plurality of drainage pipes 525 are connected at equal intervals along the length of the water storage box 524, and a plurality of nozzles 526 are arranged at the bottom of each drainage pipe 525.

[0050] A water inlet pipe may also be provided on the side wall of the water tank 521, and the water inlet pipe is connected to the external water diversion equipment. When the water liquid in the water tank 521 is insufficient, new water liquid can be introduced through the water inlet pipe to replenish the water liquid in the water tank 521, thereby facilitating the subsequent flushing and cleaning of the filter screen plate 515.

[0051] Furthermore, each nozzle 526 is provided with a flow diffusion component 53, which comprises: a ring 531 sleeved on the outside of the nozzle 526, and a mounting plate 532 is horizontally arranged below the water outlet of the nozzle 526, the mounting plate 532 and the ring 531 are fixedly connected by a connecting plate, and a flow diffusion plate 533 is also fixedly installed on the mounting plate 532.

[0052] Specifically, the above-mentioned connecting plate can be provided with a telescopic structure, which can be a telescopic rod, and then the distance between the mounting plate 532 and the ring 531 can be adjusted according to actual needs, so that the splashing angle of the water can be adjusted by using the diffuser plate 533 to adjust the area of ​​the fan-shaped spray of the water.

[0053] The working principle and use process of the present invention:

[0054] Insert the drill bit 11 at the bottom of the drilling pipe 1 into the mine 2, and use the drilling equipment 12 to control the rotation of the drill bit 11 to achieve the drilling operation;

[0055] During drilling, the mined material will gush upward along the drill bit 11. During the gush, the mined material contacts the spoiler 31. The flippable spoiler 31 is used to mitigate the impact force of the mined material when it surges upward. At the same time, the rotating handle 423 is used to control the screw sleeve 422 to rotate on the threaded portion 421, and the screw sleeve 422 is driven to move toward the second fixing ring 413 and squeeze the second fixing ring 413 to move toward the first fixing ring 412. Compressed air or water is injected into the cavity 415 along the connecting nozzle 416. When the second fixing ring 413 moves toward the first fixing ring 412, it squeezes the sealing rubber 414, causing it to expand laterally and contact the inner wall of the mine cave 2, thereby sealing the mined material in the surge and allowing the mined material to converge into the feed port 512.

[0056] The mined material is injected into the screening box 513 through the discharge pipe 511 and discharged to the bottom of the filter screen plate 515. The coal ash and drill cuttings in the mined material are screened out by the filter screen plate 515, and methane is discharged through the discharge pipe 516. When a large amount of impurities adhere to the surface of the filter screen plate 515 and block the filter holes, the water in the water tank 521 is extracted into the water pipe 523 through the water pump assembly 522, and then diverted to each drainage pipe 525 through the water storage box 524, and then sprayed out and flushed the filter screen plate 515 by multiple nozzles 526. The water is expanded by the expansion plate 533 at the bottom of the nozzle 526 to make it fan-shaped, thereby increasing the spraying area of ​​the water and reducing the spraying dead angle.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas extraction drilling anti-blowout hole device, characterized in that: include: A drilling pipeline (1), one end of which is provided with a drilling device (12), and the other end of which extends into the mine cave (2) and is detachably connected to a drill bit (11); The drilling and production pipeline (1) in the mine hole (2) is provided with a flow disturbance component (3), and a sealing mechanism (4) is also provided on the side thereof away from the drill bit (11), the flow disturbance component (3) is used to reduce the spray hole speed of the mined material in the mine hole (2), and the sealing mechanism (4) is used to block the flow of the mined material and limit the drilling spray hole; A processing mechanism (5) comprising: A discharge screening component (51) connected to the drilling and production pipeline (1) is used to guide the mined materials to the outside and to screen and separate the mined materials. A cleaning component (52) is also provided on one side of the discharge screening component (51) to clean the discharge screening component (51).

2. A gas extraction drilling anti-blowout hole device according to claim 1, characterized in that: The spoiler component (3) comprises: A plurality of spoilers (31) are arranged at equal angles around the outside of the drilling and production pipe (1), and a connecting ring (32) is fixedly connected to the outer wall of the drilling and production pipe (1) corresponding to the bottom of the plurality of spoilers (31), and the bottom ends of the plurality of spoilers (31) are rotatably connected to the connecting ring (32); An adjusting member (33) is also provided on the outer wall of the drilling and production pipeline (1) corresponding to the plurality of spoilers (31), and has: An adjusting sleeve (331) is hinged on the outer wall of the drilling and production pipe (1), and a movable rod (332) is hinged on the side wall of the spoiler (31); a receiving groove (333) is provided on the side wall of the adjusting sleeve (331), and a return spring (334) is arranged in the receiving groove; one end of the movable rod (332) is received in the receiving groove (333) and abuts against the return spring (334).

3. A gas extraction drilling anti-blowout hole device according to claim 1, characterized in that: The sealing mechanism (4) comprises: A plugging component (41) is arranged on the outer wall of the drilling and production pipeline (1), and one side of the plugging component is also provided with an extrusion component (42) movably mounted on the outer wall of the drilling and production pipeline (1); Wherein, the blocking component (41) comprises: A sliding portion (411) is arranged on the outer wall of the drilling and production pipe (1), a first fixing ring (412) is fixedly installed on the outer side of the sliding portion (411), and a second fixing ring (413) is also arranged on one side thereof and is slidably connected to the outer side of the sliding portion (411); The outer side of the sliding part (411) is also wrapped with a sealing rubber (414), and the two ends of the sealing rubber (414) are respectively fixed to the first fixing ring (412) and the second fixing ring (413); A cavity (415) is reserved between the sealing rubber (414) and the sliding portion (411), and a communication nozzle (416) communicating with the cavity (415) is provided on the sealing rubber (414).

4. A gas extraction drilling hole blowout prevention device as claimed in claim 3, characterized in that: At least one reset member (43) is further provided between the first fixing ring (412) and the second fixing ring (413), and has: A telescopic sleeve (431) is fixedly connected to the bottom wall of the second fixing ring (413), and a slot (432) is provided on the bottom wall thereof; an insert rod (433) is also vertically installed on the top wall of the first fixing ring (412), and the top end of the insert rod extends into the slot (432) and is fixedly connected to a limiting block (434); A telescopic spring (435) is also provided between the top wall of the limiting block (434) and the inner top wall of the slot hole (432).

5. A gas extraction drilling anti-blowout hole device as claimed in claim 3, characterized in that: The extrusion assembly (42) comprises: A threaded portion (421) is formed on the outer wall of the drilling and production pipe (1), and a threaded sleeve (422) is threadedly connected to the outer side thereof, and the bottom end of the threaded sleeve (422) is in contact with the second fixing ring (413); A rotating handle (423) is also provided on the outer wall of the screw sleeve (422).

6. A gas extraction drilling hole blowout prevention device as claimed in claim 1, characterized in that: The discharge screening assembly (51) comprises: a discharge pipe (511) disposed on the outer wall of the drilling and production pipeline (1), and a feed inlet (512) is also provided on the outer wall of the drilling and production pipeline (1) between the sealing mechanism (4) and the spoiler assembly (3), and one end of the discharge pipe (511) is connected to the feed inlet (512); A screening box (513) is horizontally fixedly connected with a mounting frame (514), and a filtering screen plate (515) is arranged in the mounting frame (514); The other end of the discharge pipe (511) extends to the bottom of the filter screen plate (515), and a discharge pipe (516) is also connected to the outer wall of the screening box (513) above the filter screen plate (515); A discharge port (517) is also formed on the bottom wall of the screening box (513).

7. A gas extraction drilling hole blowout prevention device as claimed in claim 6, characterized in that: The cleaning component (52) comprises: A water tank (521) is arranged on one side of the screening box (513), wherein a water pump assembly (522) is arranged inside the water tank, and a water delivery pipe (523) is connected to the water pump assembly (522); One end of the water delivery pipe (523) extends into the screening box (513) and is connected to a water storage box (524) located above the filtering screen plate (515); A plurality of drainage pipes (525) are connected at equal intervals along the length of the water storage box (524), and a plurality of nozzles (526) are provided at the bottom of each drainage pipe (525).

8. A gas extraction drilling hole blowout prevention device as claimed in claim 7, characterized in that: Each of the nozzles (526) is provided with a flow diffuser assembly (53) having: A collar (531) is sleeved on the outside of the nozzle (526), ​​and a mounting plate (532) is also horizontally arranged below the water outlet of the nozzle (526), ​​and the mounting plate (532) and the collar (531) are fixedly connected via a connecting plate; A flow diffuser plate (533) is also fixedly mounted on the mounting plate (532).

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