Coal mine underground drilling and gas extraction integrated device

Abstract

The invention provides a coal mine underground drilling and gas extraction integrated device which comprises a supporting frame, and a drilling and extraction mechanism is movably arranged on the supporting frame. The drilling and extraction mechanism comprises a movably-arranged adjusting block, and a power mechanism for controlling the adjusting block to move is arranged on the supporting frame. An extraction drill rod penetrates through the adjusting block in the direction towards the ground; an extraction channel is formed in the hollow extraction drill rod, and an extraction treatment mechanism communicating with the extraction channel is arranged on the supporting frame; an extraction drill bit is arranged on the side, facing the ground, of the extraction drill rod, and an extraction channel opening and closing control mechanism for controlling the extraction drill bit to move telescopically is arranged in the extraction channel. And the outer side of the extraction drill rod is sleeved with a sealing mechanism. The extraction mechanism is arranged, drilling operation is achieved through the extraction drill bit and the extraction drill rod, gas in a drilled hole can be extracted when the sealing mechanism blocks gas overflow, drilling and gas extraction can be conducted at the same time, and the extraction efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas extraction, in particular to a coal mine underground drilling and gas extraction integrated device. BACKGROUND

[0002] In recent years, with the continuous exploitation and utilization of coal resources, the problems of coal mine safety production and environmental protection have become increasingly prominent. The extraction and comprehensive utilization of coal mine gas, especially coal seam gas (gas), have become an important part of coal mine safety production and energy saving and emission reduction. Coal seam gas is a valuable energy resource. At the same time, if the coal seam gas accumulates to a certain extent in the underground, it may cause serious safety accidents such as gas explosion. Therefore, efficient and safe extraction of coal seam gas and its comprehensive utilization are of great significance to improve the production efficiency of coal mines, protect the safety of miners and promote environmental protection.

[0003] In the Chinese patent with publication number CN222350761U, a high-gas coal mine gas extraction device is mentioned. Through the cooperation of the dust filter plate, the second threaded rod, the limiting rod and the cleaning brush plate, the dust filter plate in the dust filter box can adsorb the dust in the gas. Then, the cleaning brush plate moves under the guidance of the limiting rod, so that the cleaning brush plate can clean the dust on the dust filter plate. The dust cleaned can fall into the collection box, thereby effectively filtering the extracted gas and further improving the purity of the extracted gas.

[0004] However, when using the extraction device, the extraction pipe needs to be inserted into the pre-drilled hole to extract gas. However, during this insertion process, the gas is easy to escape from the drilling hole. This escape not only affects the extraction effect, resulting in a decrease in the amount of extracted gas, but also makes it difficult to effectively perform the drilling and gas extraction processes simultaneously, thereby reducing the overall extraction efficiency. SUMMARY

[0005] The present application aims to at least partially solve one of the technical problems in the related art.

[0006] To achieve the above-mentioned purpose, the present application provides a coal mine underground drilling and gas extraction integrated device, which comprises a support frame, a drilling and extraction mechanism movably arranged on the support frame;

[0007] The drilling and extraction mechanism comprises a movable adjusting block, and a power mechanism arranged on the support frame to control the movement of the adjusting block. The adjusting block is provided with an extraction drill rod penetrating in the direction towards the ground, and the extraction drill rod is rotationally connected with the adjusting block.

[0008] The extraction drill rod is hollow and provided with an extraction channel. The support frame is provided with an extraction treatment mechanism in communication with the extraction channel.

[0009] The extraction drill rod is provided with an extraction drill bit on the side facing the ground, and an extraction channel opening and closing control mechanism for controlling the extension and retraction of the extraction drill bit is arranged in the extraction channel.

[0010] And a sealing mechanism is arranged outside the extraction drill rod.

[0011] The sealing mechanism enters the drill hole after the drilling is completed, and the sealing of the drill hole is realized by the abutment between the sealing mechanism and the inner wall of the drill hole, so that the overflow of gas from the drill hole is blocked. Through the arrangement of the extraction processing mechanism and the extraction channel, the gas in the drill hole can be extracted when the sealing mechanism blocks the overflow of gas, and the drilling and gas extraction can be carried out at the same time, which greatly improves the extraction efficiency.

[0012] Optionally, the support frame comprises two parallel arranged columns, and a cross beam is fixedly connected to the two columns away from the ground side, the adjusting block is arranged between the two columns, and a guide groove is arranged on the column along the length direction of the column, and a guide sliding block is integrally arranged on the adjusting block and matched with the guide groove;

[0013] The power mechanism is arranged on the side opposite to the two columns.

[0014] Further, the power mechanism comprises a first screw rod and a second screw rod arranged at two ends of the adjusting block away from the two columns, the first screw rod and the second screw rod are arranged in parallel, and the first screw rod and the second screw rod are arranged perpendicularly to the adjusting block, the adjusting block is threadedly connected with the first screw rod and the second screw rod, and the first screw rod and the second screw rod are rotationally connected with the columns;

[0015] The first screw rod and the second screw rod are provided with belt pulleys at the end facing the scale, and a transmission belt is arranged between the two belt pulleys.

[0016] The cross beam is provided with a driver on the side away from the adjusting block, and the output end of the driver is fixedly connected with the first screw rod or the second screw rod through the cross beam.

[0017] Further, a drilling power assembly for controlling the rotation of the extraction drill rod is arranged in the adjusting block, the drilling power assembly comprises a power cavity arranged in the adjusting block, the extraction drill rod is arranged through the power cavity, a driven gear is fixedly connected to the side wall of the part of the extraction drill rod in the power cavity, and a driving gear is meshingly connected with the driven gear.

[0018] The side of the adjusting block away from the extraction drill rod is provided with a driving motor, and the output end of the driving motor is fixedly connected with the driving gear through the power cavity.

[0019] Further, the extraction processing mechanism comprises an extraction pipeline arranged in communication with the extraction channel, a shunt pipeline is in communication with the extraction pipeline, a filter is arranged at one end of the shunt pipeline, the extraction pipeline penetrates through the cross beam, and an air extraction pump is arranged on the extraction pipeline and fixed on the cross beam.

[0020] And a cooling mechanism for cooling the extraction pipeline is arranged on the cross beam.

[0021] Further, the cooling mechanism comprises a refrigeration water tank arranged on the cross beam, a circulation pipe is arranged at one end of the extraction pipeline towards the refrigeration water tank, and the two ends of the circulation pipe are in communication with the water outlet and the backwater outlet of the refrigeration water tank.

[0022] The part of the circulation pipe between the water outlet and the backwater outlet of the refrigeration water tank is arranged in a spiral structure, and the spiral structure circulation pipe is arranged on the outer wall of the extraction pipeline.

[0023] The refrigeration water tank is provided with a water inlet hole on the side away from the cross beam, and a sealing cover is arranged in the water inlet hole.

[0024] Further, the extraction channel opening and closing control device comprises a fixing frame arranged in the extraction channel, an electric telescopic rod is arranged at one end of the fixing frame away from the extraction drill bit, and the output end of the electric telescopic rod penetrates through the fixing frame and is fixedly connected with the extraction drill bit.

[0025] Further, a sealing ring is arranged at one end of the extraction drill bit towards the extraction drill rod.

[0026] Further, a spiral blade is arranged on the outer rod wall of one end of the extraction drill rod towards the extraction drill bit.

[0027] Further, the sealing mechanism comprises a fixed block fixedly connected with the adjusting block, a flexible sealing cover is arranged on the side of the fixed block towards the extraction drill rod, the flexible sealing cover is sleeved on the outer side of the extraction drill rod, and the flexible sealing cover is arranged in multiple wave creases along the length direction of the extraction drill rod.

[0028] A sealing gasket is fixedly connected at one end of the flexible sealing cover away from the fixed block, and a plurality of extrusion springs are fixedly connected between the sealing gasket and the fixed block.

[0029] The fixed block and the sealing gasket are both provided with a clearance hole for the extraction drill rod to penetrate through.

[0030] Additional aspects and advantages of the application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0032] Figure 1 This is a three-dimensional structural diagram of an integrated underground drilling and gas extraction device for coal mines according to the present invention.

[0033] Figure 2 This is a schematic diagram of the cross-sectional structure of the regulating block of an integrated device for underground drilling and gas extraction in coal mines according to the present invention, which aims to show the transmission connection relationship between the power structure and the regulating block.

[0034] Figure 3 For the present invention Figure 2 Enlarged view of B in the middle;

[0035] Figure 4 For the present invention Figure 2 Enlarged view of C in the middle;

[0036] Figure 5 This is a cross-sectional view of the sealing mechanism of an integrated underground drilling and gas extraction device for coal mines according to the present invention.

[0037] Figure 6 This is a three-dimensional structural diagram of the extraction and processing mechanism of an integrated coal mine drilling and gas extraction device according to the present invention.

[0038] Figure 7 This is a three-dimensional structural diagram of the cooling mechanism of an integrated underground drilling and gas extraction device for coal mines according to the present invention.

[0039] Figure 8 For the present invention Figure 1 A magnified view of A in the middle.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Support frame; 2. Drilling and extraction mechanism; 21. Adjusting block; 22. Adjusting screw; 23. Pulley assembly; 24. Driver; 25. Extraction drill rod; 26. Receiving cavity; 27. Driven gear; 28. Drive motor; 29. ​​Driving gear; 210. Helical blade; 211. Extraction channel; 212. Fixing frame; 213. Electric telescopic rod; 214. Extraction drill bit; 215. Sealing ring; 3. Sealing mechanism; 31. Flexible sealing cover 32. Fixing plate; 33. Clearance hole; 34. Compression spring; 35. Sealing gasket; 4. Extraction and processing mechanism; 41. Air pump; 42. Extraction pipeline; 43. Cooling mechanism; 431. Cooling pipe; 432. Circulation pipe; 433. Cooling water tank; 434. Sealing cover; 44. Diverter pipe; 441. Upper valve; 442. Lower valve; 45. Filter; 5. Guide groove; 51. Guide slider; 6. Controller; 7. Casters. DETAILED DESCRIPTION

[0042] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or like reference numerals represent the same or like elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and should not be understood as limiting the present application.

[0043] The present application provides a coal mine underground drilling and gas extraction integrated device, which is described in detail below with reference to Figures 1 to 8 .

[0044] The coal mine underground drilling and gas extraction integrated device comprises a support frame 1, and a drilling and extraction mechanism 2 movably arranged on the support frame 1.

[0045] The drilling and extraction mechanism 2 comprises a movable adjusting block 21, and a power mechanism arranged on the support frame 1 and configured to control movement of the adjusting block 21; the adjusting block 21 is provided with a drilling and extraction drill rod 25 penetrating in a direction towards the ground, and the drilling and extraction drill rod 25 is rotationally connected with the adjusting block 21.

[0046] The drilling and extraction drill rod 25 is hollow and provided with a drilling and extraction channel 211, and the support frame 1 is provided with a drilling and extraction treatment mechanism 4 in communication with the drilling and extraction channel 211.

[0047] The drilling and extraction drill rod 25 is provided with a drilling and extraction drill bit 214 on a side thereof facing the ground, and the drilling and extraction channel 211 is provided with a drilling and extraction channel 211 opening and closing control mechanism configured to control telescopic movement of the drilling and extraction drill bit 214.

[0048] The drilling and extraction treatment mechanism 4, the drilling and extraction channel 211 opening and closing control mechanism, and the power mechanism are electrically connected with a same controller 6, and the controller 6 is arranged on a side wall of the support frame 1 to facilitate operation by a worker.

[0049] Further, the drilling and extraction drill rod 25 is provided with a sealing mechanism 3 outside thereof.

[0050] The design is applied to the inside of a coal mine under a coal mining environment, and specifically, the device is suitable for coal mines with high coalbed methane content and gas leakage risks, in these mines, due to the mining of coal seams, a large amount of coalbed methane (mainly composed of methane) will be released, if these gases are not extracted and treated in time, not only will it cause waste of resources, but also may cause safety accidents such as gas explosion; the present application sets up an extraction mechanism, uses the extraction drill bit 214 and the extraction drill rod 25 to realize drilling operation, when drilling is completed, the sealing mechanism 3 will enter the drilling hole, and the sealing mechanism 3 and the inner wall of the drilling hole abut to realize sealing of the drilling hole, to block the overflow of gas from the drilling hole; and through the setting of the extraction treatment mechanism 4 and the extraction channel 211, the gas in the drilling hole can be extracted when the sealing mechanism 3 blocks the overflow of gas, and drilling and gas extraction can be carried out at the same time, greatly improving the extraction efficiency.

[0051] In some embodiments, the support frame 1 comprises two parallel arranged columns, the two columns are fixedly connected with a cross beam on the side away from the ground, an adjusting block 21 is arranged between the two columns, and a guide groove 5 is arranged on the column along the length direction of the column, and a guide sliding block 51 is integrally arranged on the adjusting block 21 and matched with the guide groove 5;

[0052] The power mechanism is arranged on the side opposite to the two columns.

[0053] The arrangement of the guide groove 5 and the guide sliding block 51 can make the adjusting block 21 move along the length direction of the column, that is, when the column is placed on the ground, the adjusting block 21 moves vertically to the ground, and the power mechanism can provide power for the movement of the adjusting block 21.

[0054] In order to facilitate the movement of the support frame 1, in some embodiments, universal wheels 7 are arranged at the bottom of the ends of the two columns away from the cross beam, and brake structures are arranged on the universal wheels 7. When it is necessary to move the support frame 1, the brake structure is loosened, and the support frame 1 is pushed to move to the area to be extracted. When drilling and extraction operations are carried out, the brake structure is controlled to work, so that the pulley cannot rotate. At this time, it can be ensured that the support frame 1 is always located directly above the drilling hole during the drilling and extraction process.

[0055] In some embodiments, the power mechanism comprises a first screw and a second screw arranged at the two ends of the adjusting block 21 towards the two columns, the first screw and the second screw are arranged in parallel, and the first screw and the second screw are both arranged perpendicularly to the adjusting block 21, the adjusting block 21 is threadedly connected with the first screw and the second screw, and the first screw and the second screw are both rotationally connected with the column;

[0056] The first screw and the second screw are both provided with belt pulleys towards the measuring end, and a transmission belt is arranged between the two belt pulleys;

[0057] The crossbeam is provided with a driver 24 on the side away from the adjusting block 21. In an embodiment, the driver 24 is a driving motor capable of forward and reverse rotation. The output end of the driver 24 is fixedly connected with the first screw rod or the second screw rod. In this embodiment, the output end of the driver 24 is fixedly connected with the first screw rod, and the driver 24 is electrically connected with the controller 6.

[0058] When it is necessary to control the up-down movement of the adjusting block 21, the worker controls the driver 24 to rotate through the controller 6, thereby completing the rotation of the first screw rod and driving the second screw rod to rotate through the transmission belt. At this time, due to the action of the guide groove 5 and the guide sliding block 51, the adjusting block 21 which is threadedly connected with the first screw rod and the second screw rod moves upward or downward along the guide groove 5, thereby completing the position adjustment of the adjusting block 21.

[0059] In some embodiments, the adjusting block 21 is provided with a drilling power assembly for controlling the rotation of the extraction drill rod 25. The drilling power assembly includes a power cavity arranged in the adjusting block 21. The extraction drill rod 25 penetrates through the power cavity. A driven gear 27 is fixedly connected to the side wall of the part of the extraction drill rod 25 located in the power cavity. The driven gear 27 is meshingly connected with a driving gear 29. The diameter of the driving gear 29 is greater than that of the driven gear 27.

[0060] The side of the adjusting block 21 away from the extraction drill rod 25 is provided with a driving motor 28. The output end of the driving motor 28 penetrates into the power cavity and is fixedly connected with the driving gear 29. The driving motor 28 is electrically connected with the controller 6. The worker can control the driving motor 28 through the controller 6.

[0061] The drilling power assembly is provided with rotating power by the driving motor 28. The extraction drill rod 25 rotates under the power transmitted by the driving gear 29 and the driven gear 27, thereby completing the drilling operation. The driving motor 28 and the extraction drill rod 25 are separately arranged through the driving gear 29 and the driven gear 27. On the one hand, this can facilitate the connection of the extraction processing mechanism 4 to the extraction channel 211. On the other hand, this can avoid the vibration or jamming of the extraction drill rod 25 during drilling from being directly transmitted to the driving motor 28, thereby avoiding the damage of the driving motor 28.

[0062] In some embodiments, the extraction processing mechanism 4 includes an extraction pipeline 42 which is arranged in communication with the extraction channel 211. The extraction pipeline 42 is communicated with a shunt pipe 44 which is fixedly arranged on the crossbeam. One end of the shunt pipe 44 is provided with a filter 45. The extraction pipeline 42 penetrates through the crossbeam. The extraction pipeline 42 is provided with an air suction pump 41 which is fixedly arranged on the crossbeam. The air suction pump 41 is electrically connected with the controller 6.

[0063] The crossbeam is provided with a cooling mechanism 43 for cooling the extraction pipeline 42.

[0064] Specifically, the extraction pipeline 42 penetrates through the beam and passes through the middle of the transmission belt and is connected to the extraction channel 211 of the extraction drill pipe 25, and in order to ensure the stable connection of the extraction pipeline 42 and the extraction channel 211 when the adjusting block 21 moves, a foldable wave pipeline is arranged at the part of the extraction pipeline 42 between the beam and the adjusting block 21, when the adjusting block 21 moves downward, the extraction pipeline 42 is elongated, at this time the foldable wave pipeline is stretched into a straight pipe, when the adjusting block 21 moves upward, the foldable wave pipeline is compressed and folded, thereby adapting to the movement of the adjusting block 21, and the extraction pipeline 42 and the transmission belt are not in contact with each other. The air extraction pump 41 and the shunt pipe 44 are fixedly arranged above the beam, and the filter 45 is arranged at the top of the shunt pipe 44;

[0065] Further, after the extracted gas passes through the cooling mechanism 43, the water vapor in the gas will condense into liquid water, and the liquid water will flow into the shunt pipe 44 under the action of gravity, and the gas will enter the filter 45 along the shunt backbone; in order to ensure that the liquid water can flow into the shunt pipe 44 under the action of gravity, the part of the extraction channel 211 above the beam is arranged to be inclined, that is, the part of the extraction pipeline 42 above the beam, the height of the end of the extraction pipeline 42 towards the air extraction pump 41 is higher than the height of the end of the extraction pipeline 42 towards the shunt pipe 44, thereby ensuring that the condensed water in the pipeline can flow into the shunt pipe 44 along the inclined pipeline, avoiding the backflow of the condensed water to the air extraction pump 41.

[0066] Further, valves are arranged at both ends of the shunt pipe 44, including an upper valve 441 and a lower valve 442, the upper valve 441 is arranged close to the filter 45, the lower valve 442 is arranged away from the filter 45, and the bottom end of the shunt pipe 44 corresponding to the lower valve 442 is arranged to be in communication with the outside, the lower valve 442 can be used to open to discharge condensed water at a certain time, and the upper valve 441 can be used to control the gas flow entering the filter 45.

[0067] In some embodiments, the cooling mechanism 43 includes a refrigeration water tank 433 arranged on the beam, the refrigeration water tank 433 is provided with a circulating pipe 432 towards one end of the extraction pipeline 42, both ends of the circulating pipe 432 are arranged in communication with the water outlet and the water return of the refrigeration water tank 433, and the refrigeration water tank 433 is electrically connected with the controller 6, in an embodiment, the refrigeration water tank 433 is provided with a water pump for circulating the internal cooling liquid along the circulating pipe 432, and the controller 6 can directly control the water pump in the refrigeration water tank 433, thereby achieving the control of the circulation of the cooling liquid;

[0068] The circulating pipe 432 is arranged in a spiral structure at the part between the water outlet and the water return of the refrigeration water tank 433, and the spiral structure of the circulating pipe 432 is arranged on the outer wall of the extraction pipeline 42. The part of the extraction pipeline 42 passing through the circulating pipe 432 is referred to as a cooling pipeline, and the cooling pipeline is arranged between the air extraction pump 41 and the flow distribution pipe 44.

[0069] The refrigeration water tank 433 is provided with a water inlet hole on the side away from the cross beam, and the water inlet hole is provided with a sealing cover 434.

[0070] When the drilling is completed, the controller 6 starts the air extraction pump 41 to generate suction force in the air extraction pipeline, so that the gas is sucked into the extraction channel 211 and input into the cooling pipeline 431. At the same time, the controller 6 also starts the refrigeration water tank 433 and the circulating pipe 432. The refrigeration water tank 433 cools the refrigerant liquid therein, and the circulating pipe 432 extracts the refrigerant liquid to cool the gas in the cooling pipeline 431 and then flows back to the refrigeration water tank 433, so as to realize the circulation of the refrigerant liquid. In this way, the water vapor in the gas can be condensed into liquid water. The liquid water flows into the lower part of the flow distribution pipe 44 through the inclined cooling pipeline 431 under the influence of gravity. The lower valve 442 of the flow distribution pipe 44 can be opened regularly to discharge the accumulated water. At the same time, the upper valve 441 of the flow distribution pipe 44 is opened, so that the gas from which the water vapor is removed flows into the upper part thereof and enters the filter 45 to filter out particulate matter. The filtered gas can be transported to the storage device for storage. These processing steps can improve the quality of the gas, and then facilitate the subsequent comprehensive utilization of the gas, improve the quality and utilization rate of the gas.

[0071] In some embodiments, the extraction channel 211 opening and closing control device is arranged to ensure that the drilling operation and the extraction operation are performed simultaneously. The extraction channel 211 opening and closing control device includes a fixed frame 212 arranged in the extraction channel 211. The fixed frame 212 is provided with an electric telescopic rod 213 at the end away from the extraction drill bit 214. The output end of the electric telescopic rod 213 penetrates the fixed frame 212 and is fixedly connected with the extraction drill bit 214.

[0072] A large number of gaps are required between the fixed frame 212 and the inner wall of the extraction channel 211 to allow the extraction gas to pass through. Therefore, in this embodiment, the fixed frame 212 includes a bearing part for bearing the electric telescopic rod 213 and three connecting rods for connecting the bearing part and the inner wall of the extraction channel 211. The connecting rods have sufficient gaps with the bearing part to allow the gas to pass through, and ensure the bearing effect on the electric telescopic rod 213.

[0073] The electric telescopic rod 213 can control the telescopic of the drill bit. When only drilling is needed, the electric telescopic rod 213 can control the extraction drill bit 214 to be attached to the extraction drill rod 25 to close the extraction channel 211; when the gas can be extracted, the electric telescopic rod 213 can control the extraction drill bit 214 to be separated from the extraction drill rod 25, at this time, the extraction channel 211 at the end of the extraction drill rod 25 leaks out, that is, the gas extraction pump 41 can be started to realize the extraction of the gas.

[0074] In some embodiments, the extraction drill bit 214 is provided with a sealing ring 215 towards one end of the extraction drill rod 25. The sealing ring 215 can seal the sealing channel when the gas is not needed to be extracted, avoiding the debris or other impurities in the drilling process from entering the extraction channel 211 to cause the blockage of the extraction channel 211, and also avoiding the debris or other impurities from damaging the extraction channel 211 opening and closing control device inside the extraction channel 211.

[0075] In some embodiments, the outer rod wall of the extraction drill rod 25 towards one end of the extraction drill bit 214 is provided with a spiral blade 210. The spiral blade 210 can effectively enhance the drilling effect.

[0076] In some embodiments, the sealing mechanism 3 includes a fixed block fixedly connected with the adjusting block 21, and the fixed block is provided with a flexible sealing cover 31 towards one side of the extraction drill rod 25, the flexible sealing cover 31 is sleeved on the outer side of the extraction drill rod 25, and the flexible sealing cover 31 is provided with multiple wave creases along the length direction of the extraction drill rod 25;

[0077] The end of the flexible sealing cover 31 away from the fixed block is fixedly connected with a sealing gasket 35, and a plurality of extrusion springs 34 are fixedly connected between the sealing gasket 35 and the fixed block;

[0078] The fixed block and the sealing gasket 35 are both provided with a displacement hole 33 for the extraction drill rod 25 to pass through.

[0079] Specifically, in the process of drilling by the extraction drill rod 25, the displacement hole 33 ensures that the fixed plate 32 does not affect the drilling work of the extraction drill rod 25, and at the same time, the upper fixed plate 32 can move downward together with the movement of the adjusting block 21, which causes the flexible sealing cover 31 and the plurality of extrusion springs 34 to shrink. At this time, the extrusion spring 34 uses its elasticity to generate a pushing force on the lower fixed plate 32, so that the sealing gasket 35 can always be in close contact with the drilling position during the deepening of the extraction drill rod 25 into the drilling position, thereby effectively sealing the drilling position and preventing the gas from escaping during the extraction process. In this way, the work of the extraction drill rod 25 is not affected, and the sealing property is ensured. In addition, the foldable and unfoldable flexible sealing cover 31 always effectively protects the internal components, and does not affect the spacing adjustment between the two fixed plates 32.

[0080] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0081] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0082] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0083] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0084] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0085] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and the ordinary skilled in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. An integrated device for underground drilling and gas extraction in coal mines, characterized in that, Includes a support frame, on which a drilling and extraction mechanism is movably mounted; The drilling and extraction mechanism includes a movable adjustment block, and the support frame is provided with a power mechanism to control the movement of the adjustment block; the adjustment block is provided with an extraction drill rod through it in the direction toward the ground, and the extraction drill rod is rotatably connected to the adjustment block; The hollow extraction drill rod is provided with an extraction channel, and the support frame is provided with an extraction processing mechanism that is connected to the extraction channel; The extraction drill rod is equipped with an extraction drill bit on the side facing the ground, and the extraction channel is equipped with an extraction channel opening and closing control mechanism to control the extension and retraction of the extraction drill bit. Furthermore, a sealing mechanism is fitted on the outer side of the extraction drill rod.

2. The integrated device for underground drilling and gas extraction in coal mines as described in claim 1, characterized in that, The support frame includes two parallel columns, with a horizontal beam fixedly connected to the side of the two columns away from the ground. The adjustment block is located between the two columns, and a guide groove is provided on the column along the length of the column. The adjustment block is integrally provided with a guide slider to cooperate with the guide groove. The power mechanism is located on one side of the two columns facing each other.

3. The integrated device for underground drilling and gas extraction in coal mines as described in claim 2, characterized in that, The power mechanism includes a first screw and a second screw respectively disposed at both ends of the adjusting block facing the two columns. The first screw and the second screw are arranged in parallel and are both perpendicular to the adjusting block. The adjusting block is threadedly connected to both the first screw and the second screw. The first screw and the second screw are rotatably connected to the columns. Both the first screw and the second screw are provided with pulleys at the measuring end, and a transmission belt is provided between the two pulleys; A driver is provided on the side of the crossbeam away from the adjusting block, and the output end of the driver passes through the crossbeam and is fixedly connected to the first screw or the second screw.

4. The integrated device for underground drilling and gas extraction in coal mines as described in claim 3, characterized in that, The adjusting block is provided with a drilling power assembly for controlling the rotation of the extraction drill rod. The drilling power assembly includes a power cavity disposed in the adjusting block. The extraction drill rod passes through the power cavity, and a driven gear is fixedly connected to the side wall of the portion of the extraction drill rod located inside the power cavity. The driven gear is meshed with a driving gear. The adjustment block is equipped with a drive motor on the side away from the extraction drill rod, and the output end of the drive motor passes through the power cavity and is fixedly connected to the drive gear.

5. The integrated device for underground drilling and gas extraction in coal mines as described in claim 2, characterized in that, The extraction and processing mechanism includes an extraction pipe connected to the extraction channel, a diversion pipe connected to the extraction pipe, a filter at one end of the diversion pipe, the extraction pipe passing through the crossbeam, and an air pump fixedly mounted on the extraction pipe. Furthermore, the crossbeam is equipped with a cooling mechanism for cooling the extraction pipeline.

6. The integrated device for underground drilling and gas extraction in coal mines as described in claim 5, characterized in that, The cooling mechanism includes a cooling water tank mounted on the crossbeam. The cooling water tank has a circulation pipe at one end facing the extraction pipeline. The two ends of the circulation pipe are respectively connected to the outlet and return water of the cooling water tank. The portion of the circulation pipe located between the outlet and return outlet of the cooling water tank is arranged in a spiral structure, and the spiral circulation pipe is sleeved on the outer wall of the extraction pipe. The cooling water tank has a water inlet on the side away from the crossbeam, and the water inlet is equipped with a sealing cap.

7. The integrated device for underground drilling and gas extraction in coal mines as described in claim 2, characterized in that, The extraction channel opening and closing control device includes a fixed frame installed in the extraction channel. An electric telescopic rod is provided at one end of the fixed frame away from the extraction drill bit. The output end of the electric telescopic rod passes through the fixed frame and is fixedly connected to the extraction drill bit.

8. The integrated device for underground drilling and gas extraction in coal mines as described in claim 7, characterized in that, The extraction drill bit is equipped with a sealing ring at the end facing the extraction drill rod.

9. An integrated device for underground drilling and gas extraction in coal mines as described in claim 7 or 8, characterized in that, The outer wall of the extraction drill rod facing the extraction drill bit is provided with spiral blades.

10. The integrated device for underground drilling and gas extraction in coal mines as described in claim 1, characterized in that, The sealing mechanism includes a fixed block that is fixedly connected to the adjusting block. The fixed block is provided with a flexible sealing cover on the side facing the extraction drill rod. The flexible sealing cover is sleeved on the outside of the extraction drill rod, and the flexible sealing cover is arranged with multiple wave folds along the length direction of the extraction drill rod. A sealing gasket is fixedly connected to the end of the flexible sealing cover away from the fixed block, and multiple sets of compression springs are fixedly connected between the sealing gasket and the fixed block; Both the fixing block and the sealing gasket are provided with clearance holes for the extraction drill rod to pass through.

Images