A gas-liquid linkage drill for coal mine excavation

Abstract

The present invention belongs to the technical field of coal, rock, oil and gas mining drilling, and specifically relates to a gas-liquid linkage drill for coal mine excavation, which includes a mobile vehicle frame. An elevating rod is installed on the mobile vehicle frame, and a slide rail is rotatably installed on the elevating rod. A drill rig main body and a drill pipe are installed on the slide rail, and a protection module is also installed on the slide rail; the protection module includes an installation box and a collection cylinder. An installation hole is opened on the installation box, and a sponge block is installed in the installation hole. A water-proof plastic film is arranged in the sponge block; a cleaning cylinder is installed in the installation box, and brush hairs are installed in the cleaning cylinder. Water outlet holes are opened on the cleaning cylinder, a water inlet pipe is installed on the installation box, and a drain pipe is installed on the collection cylinder; by using the protection module, the present invention cleans the dust generated during drilling and the impurities on the drill pipe, avoiding the harm caused by the floating dust to the staff and ensuring the normal operation of the drill pipe.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal, rock, oil, and gas mining and drilling, and specifically relates to a pneumatic-hydraulic linkage drill for coal mine excavation. Background Art

[0002] A drill is a mechanical device that drives a drill string to drill underground in geological exploration to obtain physical geological data. It is also called a drilling machine. Its main function is to drive the drill string to break the rock at the bottom of the hole and lower or lift the drill string in the hole. It can be used to drill core samples, ore samples, cuttings, gaseous samples, liquid samples, etc. to explore the underground geology and mineral resources.

[0003] In the existing Yaojie mining area, a three-zone linkage extraction system above and below the well has been established to achieve the common extraction of coal, rock, oil, and gas. When there is oil and gas in the coal mine excavation area, in order to improve the exploration efficiency, a pneumatic-hydraulic linkage drill can effectively carry out drilling with high efficiency. When using the drill to drill, when the drill pipe on the drill works for a long time for operations such as opening holes, a large amount of impurities will adhere to the drill pipe. Some of these impurities are corrosive, and long-term adhesion will corrode the drill pipe and the drill bit. This requires later cleaning by the staff. Most of the existing drill bit protection mechanisms do not have the effect of cleaning impurities to protect the drill bit from being corroded by the adherents; at the same time, during the operation of the drill, the dust generated at the drilling site will disperse everywhere, polluting the roadway environment in the coal mine and affecting the physical health of the staff. Summary of the Invention

[0004] In order to make up for the deficiencies of the existing technology, a pneumatic-hydraulic linkage drill for coal mine excavation is proposed by the present invention. The protection module is used to clean the dust generated during the drilling process, as well as the debris and impurities adhering to the drill pipe, to ensure the normal operation of the drill and the drill pipe, extend their service life, and at the same time avoid the dispersion of the dust generated by drilling, ensure a good working environment, and reduce the harm of dust to the staff.

[0005] The technical solution adopted by the present invention to solve its technical problems is: The present invention relates to a pneumatic-hydraulic linkage drill for coal mine excavation, which includes a mobile vehicle frame. An equipment box is installed on the mobile vehicle frame. A gas and liquid system is installed in the equipment box. A lifting rod is installed on the mobile vehicle frame. A fixing block is installed on the lifting rod. A connecting block is rotatably installed on the fixing block. The connecting block and the fixing block are locked by a locking screw. A slide rail is installed on the connecting block. A drill rig main body is installed on the slide rail. A drill pipe is installed on the drill rig main body. A protection module is also installed on the slide rail. The drill pipe passes through the protection module.

[0006] The protection module includes an installation box which is fixedly installed at one end of the slide rail away from the drilling rig mainframe. A fixing plate is installed at one end of the installation box away from the drilling rig mainframe. Installation holes are provided on the side wall of the installation box close to the drilling rig mainframe and on the fixing plate. The drill pipe passes through the installation holes. A sponge block is installed in the installation hole on the installation box. The sponge block is composed of multiple layers of sponge, and a water-proof plastic film is installed between the layers of sponge in the sponge block;

[0007] A cleaning cylinder is installed in the installation box. The fixing plate presses and fixes the cleaning cylinder in the installation box. Sealing gaskets are installed at both ends of the cleaning cylinder. The diameter of the cleaning cylinder is larger than that of the installation hole. Brush hairs are installed on the inner wall of the cleaning cylinder and are in contact with the surface of the drill pipe. Water outlet holes are provided on the inner wall of the cleaning cylinder. A water inlet pipe is installed on the installation box;

[0008] A collection cylinder is installed at one end of the installation box away from the drilling rig mainframe. A drain pipe is installed on the collection cylinder.

[0009] Preferably, multiple groups of brush hairs are provided in the cleaning cylinder. The brush hairs are distributed in a spiral shape. The water outlet holes are located in the gaps between the groups of brush hairs, and the outlet direction of the water outlet holes faces the surface of the drill pipe;

[0010] An elastic sheet is installed in the water outlet hole.

[0011] Preferably, an elastic plate is installed in the installation hole on the fixing plate. A through hole is provided on the elastic plate. The drill pipe passes through the through hole. Spray holes are evenly distributed on the inner wall of the through hole, and the center lines of the spray holes are parallel to the center line of the through hole.

[0012] Preferably, a slit is provided on the elastic plate. The slit is distributed along the radial direction of the through hole. One end of the slit close to the drill pipe is connected to the scratched spray hole;

[0013] The diameter of the spray hole at the end close to the drilling rig mainframe is larger than that of the spray hole at the end close to the collection cylinder.

[0014] Preferably, a separation net is installed in the collection cylinder. The cross section of the separation net is arc-shaped. An independent space is formed between the separation net and the inner wall of the collection cylinder. The drain pipe is communicated with one end of the independent space close to the drilling rig mainframe;

[0015] A dropping slot is provided on the collection cylinder. The dropping slot is located between the separation net and the installation box.

[0016] Preferably, a baffle is installed on the installation box. The diameter of the baffle is greater than or equal to the diameter of the mounting hole on the fixing plate. The separation net is located outside the end of the baffle away from the installation box. There is an overlapping area between the separation net and the baffle, and there is a gap between the separation net and the baffle.

[0017] The thickness of the baffle near the installation box is greater than the thickness of the baffle near the separation net.

[0018] Preferably, the separation net is rotatably installed in the collection cylinder. An elastic rod is installed at the end of the separation net away from the installation box. The elastic rod has magnetism. The other end of the elastic rod is in contact with the drill rod, and the surface of the elastic rod is rough.

[0019] Preferably, a contact bladder is installed on the surface of the collection cylinder away from the installation box. A raised ring is provided on the surface of the contact bladder. There are multiple groups of the raised rings, and the raised rings are concentrically distributed.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. For the pneumohydraulic linkage drill for coal mine excavation of the present invention, by setting the installation box, cleaning cylinder, brush bristles, and water outlet holes, the water flowing through the brush bristles and the water outlet holes cleans the surface of the drill rod, avoiding corrosion of the drill rod due to impurities, affecting the service life of the drill rod and increasing the workload of subsequent staff for cleaning the drill rod. At the same time, the collection cylinder will collect and clean the dust generated by the drill hole on the wall of the drill hole, preventing the dust from spreading everywhere and affecting the physical health of the staff.

[0022] 2. For the pneumohydraulic linkage drill for coal mine excavation of the present invention, by setting the elastic plate, through holes, ejection holes, and slits, the water in the cleaning cylinder can accumulate and fill the cleaning cylinder, submerging the drill rod in the cleaning cylinder, improving the cleaning effect of the drill rod. At the same time, the water in the cleaning cylinder will spray out along the surface of the drill rod from the ejection holes, increasing the submerged and wetted area of the drill rod and enhancing the effect of cooling the drill rod. At the same time, due to the effect of the slits, the elastic plate can elastically deform when the ejection plate is blocked, thereby dredging the ejection holes and preventing the normal use of the protection module from being affected.

[0023] 3. For the pneumohydraulic linkage drill for coal mine excavation of the present invention, by setting the collection cylinder, separation net, elastic rod, and baffle, the wastewater generated during the drilling process will first pass through the separation net for treatment, separating the water and debris impurities therein, and discharging the separated debris impurities outside the collection cylinder, thus ensuring that the amount of impurities in the water recovered by the drain pipe is relatively small and preventing the drain pipe from being blocked. At the same time, the separation net is also driven by the rotating drill rod through the elastic rod, changing the working area on the separation net, and thus improving the working efficiency of the separation net. Brief Description of the Drawings

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 is a perspective view of the drill rig of the present invention;

[0026] Figure 2 is a cross-sectional view of the protection module in the drill rig of the present invention;

[0027] Figure 3 is a perspective view of the installation box in the drill rig of the present invention;

[0028] Figure 4 is a perspective view of the elastic plate in the drill rig of the present invention;

[0029] Figure 5 is a perspective view of the cleaning cylinder in the drill rig of the present invention;

[0030] Figure 6 is a perspective view of the separation net in the drill rig of the present invention;

[0031] Figure 7 is Figure 2 a partial enlarged view of part A in;

[0032] Figure 8 is Figure 2 a partial enlarged view of part B in;

[0033] Figure 9 is Figure 2 a partial enlarged view of part C in;

[0034] In the figure: mobile vehicle frame 1, equipment box 11, lifting rod 12, fixed block 121, slide rail 2, connecting block 21, locking screw 22, drill rig main unit 23, drill pipe 24, installation box 3, fixing plate 31, sponge block 311, cleaning cylinder 32, sealing gasket 321, brush bristles 33, water outlet hole 34, elastic plate 35, through hole 351, spraying hole 352, cutting slot 353, baffle 36, water inlet pipe 37, collection cylinder 4, contact bladder 41, convex ring 411, separation net 42, elastic rod 43, dropping groove 44, drain pipe 45. Detailed Embodiments

[0035] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0036] As Figures 1 to 9As shown in the figure, the pneumatic-hydraulic linkage drill for coal mine excavation and mining of the present invention includes a mobile vehicle frame 1, an equipment box 11 is installed on the mobile vehicle frame 1, a gas and liquid system is installed in the equipment box 11, a lifting rod 12 is installed on the mobile vehicle frame 1, a fixing block 121 is installed on the lifting rod 12, a connecting block 21 is rotatably installed on the fixing block 121, and the connecting block 21 and the fixing block 121 are locked by a locking screw 22. A slide rail 2 is installed on the connecting block 21, a drill rig main unit 23 is installed on the slide rail 2, a drill pipe 24 is installed on the drill rig main unit 23, a protection module is also installed on the slide rail 2, and the drill pipe 24 passes through the protection module;

[0037] The protection module includes an installation box 3. The installation box 3 is fixedly installed at one end of the slide rail 2 away from the drill rig main unit 23. A fixing plate 31 is installed at one end of the installation box 3 away from the drill rig main unit 23. Installation holes are provided on the side wall of the installation box 3 close to the drill rig main unit 23 and on the fixing plate 31. The drill pipe 24 passes through the installation holes. A sponge block 311 is installed in the installation holes on the installation box 3. The sponge block 311 is composed of multiple layers of sponge, and a water-proof plastic film is installed between the layers of sponge in the sponge block 311;

[0038] A cleaning cylinder 32 is installed in the installation box 3. The fixing plate 31 presses and fixes the cleaning cylinder 32 in the installation box 3. Sealing gaskets 321 are installed at both ends of the cleaning cylinder 32. The diameter of the cleaning cylinder 32 is larger than the diameter of the installation hole. Brush hairs 33 are installed on the inner wall of the cleaning cylinder 32. The brush hairs 33 are in contact with the surface of the drill pipe 24. Water outlet holes 34 are provided on the inner wall of the cleaning cylinder 32. A water inlet pipe 37 is installed on the installation box 3;

[0039] A collection cylinder 4 is installed at one end of the installation box 3 away from the drill rig main unit 23. A drain pipe 45 is installed on the collection cylinder 4;

[0040] During operation, the staff controls the gas and liquid systems in the equipment box 11 through the controller to act, so as to adjust the height of the lifting rod 12, making the heights of the drill rig main unit 23 and the drill pipe 24 the same as the position to be excavated on the wall surface of the coal mine roadway. After that, the staff manually loosens the locking screw 22, so that the angle of the slide rail 2 can change relative to the lifting rod 12. Until the angle of the drill pipe 24 relative to the drilling wall surface in the roadway is the same as the actual excavation requirement, the staff tightens the locking screw 22 again to lock the angle of the slide rail 2. After that, the drill is controlled to start excavation through the controller. At the same time, during the excavation process, the gas and liquid systems in the equipment box 11 are connected to the drill rig main unit 23 through pipelines, so as to drive the drill rig main unit 23 to operate, integrating the advantages of pneumatic and hydraulic drills;

[0041] Meanwhile, during the process of the drill rig excavating the coal mine, the protective module at the front end of the slide rail 2 will closely adhere to the borehole wall surface. The protective module is used to clean the debris and impurities adhering to the surface of the drill pipe 24, avoiding a large amount of impurities adhering to the surface of the drill pipe 24 after long-term use, which may cause corrosion of the surface of the drill pipe 24 and reduce the cleaning difficulty and workload of the subsequent staff for the drill pipe 24, and cleaning the dust generated during the drilling process to prevent the dust from floating and affecting the physical health of the staff;

[0042] Meanwhile, during the operation of the drill rig, the water stored in the water tank in the moving carriage 1 will enter the installation box 3 from the water inlet pipe 37. After that, the water in the installation box 3 will be sprayed out from the water outlet holes 34 on the cleaning cylinder 32. The sprayed water is used to wash and clean the debris and impurities adhering to the surface of the drill pipe 24. At the same time, during the excavation process, the drill pipe 24 will rotate relative to the cleaning cylinder 32, so that the brush hairs 33 in the cleaning cylinder 32 will further clean the surface of the drill pipe 24, making the surface of the drill pipe 24 clean, avoiding the corrosion of the surface of the drill pipe 24 caused by the debris and impurities adhering to the surface of the drill pipe 24 after long-term use, which affects the service life of the drill pipe 24, and making the surface clean, thus greatly reducing the cleaning work of the subsequent staff for the drill pipe 24;

[0043] Meanwhile, since the collection cylinder 4 will closely adhere to the borehole wall surface in the coal mine roadway, the dust generated during the excavation process will directly enter the collection cylinder 4, preventing the dust from floating around and affecting the physical health of the staff. At the same time, since the collection cylinder 4 is installed on the installation box 3, after the water sprayed out from the water outlet holes 34 cleans the drill pipe 24, this part of the water will directly enter the collection cylinder 4 from the installation holes on the fixing plate 31, thereby infiltrating and cleaning the dust in the collection cylinder 4, making the dust entering the collection cylinder 4 be adsorbed and carried by the water. After that, the water in the collection cylinder 4 is discharged through the drain pipe 45 installed on the collection cylinder 4, so as to recycle the water and use it in a cycle after filtration. At the same time, during the process of the water in the installation box 3 discharging from the installation holes on the fixing plate 31 into the collection cylinder 4, the debris and impurities washed off the drill pipe 24 by the water and cleaned off the drill pipe 24 by the brush hairs 33 in the cleaning cylinder 32 will enter the collection cylinder 4 along with the water, and then enter the drain pipe 45 along with the water;

[0044] Meanwhile, since sponge blocks 311 are installed in the mounting holes on the mounting box 3, and water-blocking sponge blocks 311 are arranged between the sponge blocks 311, the sponge blocks 311 in the mounting holes can intercept and isolate water flow while maintaining elasticity and adapting to different shapes. As a result, the gap between the mounting holes on the mounting box 3 and the drill pipe 24 is filled and sealed, preventing a large gap between the drill pipe 24 and the mounting holes, which could cause the water sprayed out from the water outlet holes 34 to flow back out through the mounting holes on the mounting box 3, wetting the drill rig and affecting its normal use or causing malfunctions.

[0045] As an embodiment of the present invention, multiple groups of bristles 33 are provided inside the cleaning cylinder 32. The bristles 33 are distributed in a spiral shape, and the water outlet holes 34 are located in the gaps between the groups of bristles 33. The outlet direction of the water outlet holes 34 faces the surface of the drill pipe 24.

[0046] Elastic sheets are installed in the water outlet holes 34.

[0047] By providing multiple groups of spiral-shaped bristles 33 inside the cleaning cylinder 32, the bristles 33 can fully contact the surface of the drill pipe 24, so as to clean the impurities and debris on the surface of the drill pipe 24, ensure the cleanliness of the surface of the drill pipe 24, prevent the surface of the drill pipe 24 from being corroded, and reduce the workload of subsequent cleaning of the drill pipe 24 by the staff.

[0048] Meanwhile, since the bristles 33 are spiral-shaped and the water outlet holes 34 are located in the gaps between the bristles 33, the bristles 33, the debris and impurities cleaned from the drill pipe 24 by the sprayed water flow can move under the action of the spiral-shaped bristles 33, so that the cleaned debris and impurities can be carried out of the cleaning cylinder 32 from the mounting holes on the fixing plate 31 by the water flow, ensuring that there are relatively few debris and impurities in the cleaning cylinder 32 as much as possible, and thus improving the cleaning effect on the drill pipe 24.

[0049] Meanwhile, by installing elastic sheets in the water outlet holes 34, when the water flow sprays out from the water outlet holes 34 into the cleaning cylinder 32, the elastic sheets are squeezed and opened, which will not affect the cleaning effect of the sprayed water flow on the surface of the drill pipe 24. At the same time, when the water flow no longer sprays out from the water outlet holes 34, the elastic sheets will return to their original state and seal the water outlet holes 34, thus preventing the debris cleaned from the surface of the drill pipe 24 from entering the space between the cleaning cylinder 32 and the mounting box 3, and preventing debris and impurities from entering the water outlet holes 34, so as to ensure the normal operation of the protection module.

[0050] Meanwhile, when it is necessary to clean or replace the installation box 3 and the cleaning cylinder 32, the staff removes the screws on the fixing plate 31 with tools, so that the fixing plate 31 is separated from the installation box 3. Then, the cleaning cylinder 32 that is tightly pressed and installed in the installation box 3 by the fixing plate 31 can be easily disassembled, which facilitates the cleaning or replacement of the cleaning cylinder 32 and the bristles 33 inside the cleaning cylinder 32.

[0051] As an embodiment of the present invention, an elastic plate 35 is installed in the mounting hole on the fixing plate 31. A through hole 351 is formed on the elastic plate 35. The drill rod 24 passes through the through hole 351. Uniformly distributed ejection holes 352 are formed on the inner wall of the through hole 351. The center line of the ejection hole 352 is parallel to the center line of the through hole 351.

[0052] The gap between the mounting hole on the fixing plate 31 and the drill rod 24 is filled by the elastic plate 35, so that the space inside the installation box 3 and the cleaning cylinder 32 is relatively closed. Then, the water inside the installation box 3 and the cleaning cylinder 32 can accumulate, and the space inside the cleaning cylinder 32 is filled with water, so that the drill rod 24 located inside the cleaning cylinder 32 is in a state of being immersed in water flow, which promotes the infiltration and cleaning of impurities and debris on the surface of the drill rod 24 and improves the cleaning effect on the drill rod 24.

[0053] Meanwhile, since uniformly distributed ejection holes 352 are formed on the inner wall of the through hole 351, after the cleaning cylinder 32 is fully filled with water, the water inside the cleaning cylinder 32 will be ejected again from the ejection holes 352. At this time, the water flow ejected from the ejection holes 352 will flow along the surface of the drill rod 24, and try to make the ejected water flow cover the surface of the drill rod 24 and fully wet the surface of the drill rod 24, so as to cool down the drill rod 24 and avoid the temperature of the drill rod 24 being too high after long-term operation, which affects the normal use of the drilling rig. At the same time, when the water ejected from the ejection holes 352 flows along the surface of the drill rod 24, the drill rod 24 will be cleaned again, further improving the cleaning effect on the drill rod 24.

[0054] As an embodiment of the present invention, a slit 353 is formed on the elastic plate 35. The slit 353 is distributed along the radial direction of the through hole 351. One end of the slit 353 close to the drill rod 24 is connected to the scratch of the ejection hole 352.

[0055] The diameter of the ejection hole 352 at one end close to the drilling rig main body 23 is larger than the diameter of the ejection hole 352 at one end close to the collection cylinder 4.

[0056] Since the diameter of the end of the ejection hole 352 close to the main drilling rig 23 is relatively large, it will cause the water flow ejected from the cleaning cylinder 32 to adhere to the surface of the drill pipe 24 as much as possible and flow along the surface of the drill pipe 24, so as to clean the impurities and debris on the surface of the drill pipe 24 and cool down the drill pipe 24;

[0057] At the same time, since the protection module is closely attached to the wall of the borehole in the roadway, the elastic plate 35 on the installation box 3 is relatively close to the wall of the borehole and the borehole, so that the water flow ejected from the ejection hole 352 and flowing along the surface of the drill pipe 24 can relatively easily invade the gap between the borehole and the drill pipe 24, so as to carry out the drill cuttings in the borehole, improve the working efficiency of the drilling rig, and timely collect and clean the dust generated in the borehole;

[0058] At the same time, the debris and impurities cleaned from the drill pipe 24 by the water flow and the brush bristles 33 in the cleaning cylinder 32 will also enter the collection cylinder 4 with the water flow from the ejection hole 352. During this process, there is a possibility that the ejection hole 352 will be blocked by debris and impurities. When the ejection hole 352 is blocked, the pressure of the water flow in the cleaning cylinder 32 on the elastic plate 35 will gradually increase, so that the elastic plate 35 undergoes elastic deformation along the slit 353 on its surface, and the debris and impurities blocked in the ejection hole 352 are washed away by the water flow, thus ensuring the normal use of the protection module.

[0059] As an embodiment of the present invention, a separation net 42 is installed in the collection cylinder 4. The cross-section of the separation net 42 is arc-shaped. An independent space is formed between the separation net 42 and the inner wall of the collection cylinder 4. The drain pipe 45 communicates with one end of the independent space close to the main drilling rig 23;

[0060] A dropping groove 44 is formed on the collection cylinder 4. The dropping groove 44 is located between the separation net 42 and the installation box 3;

[0061] When the water flow ejected from the ejection hole 352 flows along the surface of the drill pipe 24 and the water flow invades the borehole, the water flow will fall into the collection cylinder 4. At the same time, by installing the separation net 42 in the collection cylinder 4, the water flow in the collection cylinder 4 falls on the separation net 42. Then, the water flow and the debris and impurities carried in the water flow are separated by the separation net 42, and the separated water will pass through the separation net 42 and enter the independent space between the separation net 42 and the inner wall of the collection cylinder 4, and then enter the drain pipe 45 from the independent space, so that the debris and impurities carried in the water flow recycled through the drain pipe 45 are relatively few, avoiding the accumulation of debris and impurities in the drain pipe 45 and causing drainage blockage. At the same time, the relatively small number of debris and impurities carried in the water flow recycled in the drain pipe 45 will also make the difficulty of recycling the water flow recycled in the drain pipe 45 relatively low in the follow-up, facilitating the reuse of the recycled water flow;

[0062] Meanwhile, the collection cylinder 4 collects the water flow, which can further prevent the water flow from flowing onto the ground in the roadway, ensure a good working environment in the roadway, and avoid excessive water flow on the ground in the roadway, which may cause interference or safety hazards to the staff.

[0063] Meanwhile, the debris and impurities separated by the separation net 42 will slide along the arc surface of the separation net 42 and then be discharged to the outside of the collection cylinder 4 from the dropping slot 44 on the collection cylinder 4, preventing the debris and impurities from accumulating in the collection cylinder 4 and affecting the normal use of the protection module.

[0064] As an embodiment of the present invention, a baffle 36 is installed on the installation box 3. The diameter of the baffle 36 is greater than or equal to the diameter of the mounting hole on the fixing plate 31. The separation net 42 is located outside the end of the baffle 36 away from the installation box 3. There is an overlapping area between the separation net 42 and the baffle 36, and there is a gap between the separation net 42 and the baffle 36.

[0065] The thickness of the end of the baffle 36 close to the installation box 3 is greater than the thickness of the end of the baffle 36 close to the separation net 42.

[0066] Due to the influence of the shape of the drill pipe 24 itself and the rotation of the drill pipe 24, not all of the water flow in the cleaning cylinder 32 can be ejected along the surface of the drill pipe 24 from the ejection holes 352, and there will be a situation where the water flow drops from a position close to the fixing plate 31. At the same time, since the dropping slot 44 is located between the separation net 42 and the installation box 3, there will be a situation where the water flow flowing out of the cleaning cylinder 32 directly flows out from the dropping slot 44. At this time, through the installed baffle 36, the water flow dropping from a position close to the fixing plate 31 is blocked and guided, so that this part of the water flow can fall onto the separation net 42 under the action of the baffle 36. The separation net 42 separates this part of the water flow, and the separated water can be collected from the drain pipe 45, preventing the water flow discharged from near the cleaning cylinder 32 from directly discharging to the outside after dropping at a position close to the fixing plate 31, which may cause excessive water flow on the ground in the roadway and affect the working environment in the roadway.

[0067] As an embodiment of the present invention, the separation net 42 is rotatably installed in the collection cylinder 4. An elastic rod 43 is installed at the end of the separation net 42 away from the installation box 3. The elastic rod 43 has magnetism. The other end of the elastic rod 43 is in contact with the drill pipe 24, and the surface of the elastic rod 43 is rough.

[0068] Since the separation net 42 is rotatably installed in the collection cylinder 4 and the elastic rod 43 is installed on the separation net 42, when the drill pipe 24 rotates, a force will be generated on the elastic rod 43 by the drill pipe 24. Then, the separation net 42 is driven to rotate by the elastic rod 43, so that the position for separating the water flow carrying debris and impurities on the separation net 42 is adjusted. Thus, the debris and impurities separated on the separation net 42 are promoted to move and leave the separation net 42, avoiding the blockage of the separation net 42 by debris and impurities or the inability of the separation net 42 to separate in time, which affects the normal use of the protection module;

[0069] At the same time, due to the rough surface of the elastic rod 43 and the magnetism of the elastic rod 43, when the elastic rod 43 contacts the drill pipe 24, there will be a force between the elastic rod 43 and the drill pipe 24. Then, the drill pipe 24 drives the elastic rod 43 and the separation net 42 to rotate, improving the separation effect of the separation net 42 on the water flow and debris.

[0070] As an implementation manner of the present invention, a contact bladder 41 is installed on the surface of the collection cylinder 4 away from the installation box 3. A raised ring 411 is provided on the surface of the contact bladder 41. Multiple groups of the raised rings 411 are provided, and the raised rings 411 are concentrically distributed;

[0071] By means of the provided contact bladder 41, the pits and grooves on the drilling wall surface are fitted and filled, ensuring full contact between the collection cylinder 4 and the drilling wall surface, and avoiding the water flow flowing out of the drill hole from seeping out through the gap between the collection cylinder 4 and the drilling wall surface, which affects the collection and cleaning effects of the water flow, debris, and dust generated by the drill hole;

[0072] At the same time, multiple groups of concentrically distributed raised rings 411 are provided on the surface of the contact bladder 41. After the contact bladder 41 is fitted to the drilling wall surface, the raised rings 411 are used to fully fill and seal the grooves and pits existing on the drilling wall surface, improving the sealing effect of the contact bladder 41 on the gap between the collection cylinder 4 and the drilling wall surface.

[0073] The specific working process is as follows:

[0074] During work, the height of the lifting rod 12 is adjusted and the angle of the slide rail 2 is adjusted to make the height and angle of the drill pipe 2 survive. Then, the drill is controlled by the controller to start mining;

[0075] During the process of the drill drilling underground, the protection module at the front end of the slide rail 2 will be closely attached to the drilling wall surface. The debris and impurities attached to the surface of the drill pipe 24 are cleaned by the protection module, and the dust generated during the drilling process is also cleaned;

[0076] During the operation of the drilling rig, the water stored in the water tank within the moving carriage 1 enters the mounting box 3 through the water inlet pipe 37. Subsequently, the water within the mounting box 3 sprays out from the water outlet holes 34 on the cleaning cylinder 32 to wash and clean the debris and impurities adhering to the surface of the drill pipe 24. Meanwhile, during the excavation process, the drill pipe 24 rotates relative to the cleaning cylinder 32, causing the bristles 33 within the cleaning cylinder 32 to further clean the surface of the drill pipe 24;

[0077] Since the collection cylinder 4 is closely attached to the wall surface of the borehole in the coal mine roadway, the dust generated during the excavation process directly enters the collection cylinder 4. At the same time, as the collection cylinder 4 is installed on the mounting box 3, after the water sprayed from the water outlet holes 34 cleans the drill pipe 24, this part of the water directly enters the collection cylinder 4 through the mounting holes on the fixing plate 31, thereby infiltrating and cleaning the dust within the collection cylinder 4, causing the dust entering the collection cylinder 4 to be adsorbed and carried by the water. Subsequently, the water within the collection cylinder 4 is discharged, recycled, and reused through the drain pipe 45 installed on the collection cylinder 4. Meanwhile, during the process of the water within the mounting box 3 discharging from the mounting holes on the fixing plate 31 into the collection cylinder 4, the debris and impurities washed off the drill pipe 24 by the water and cleaned off the drill pipe 24 by the bristles 33 will enter the collection cylinder 4 along with the water and then enter the drain pipe 45 along with the water;

[0078] Due to the installation of sponge blocks 311 in the mounting holes on the mounting box 3 and the presence of water-blocking sponge blocks 311 between the sponge blocks 311, the sponge blocks 311 within the mounting holes can intercept and isolate the water flow while maintaining elasticity and being able to adapt to different shapes, preventing a large gap between the drill pipe 24 and the mounting holes and avoiding the water sprayed from the water outlet holes 34 flowing back out from the mounting holes on the mounting box 3;

[0079] By arranging multiple groups of spiral-shaped bristles 33 within the cleaning cylinder 32, the bristles 33 can fully contact the surface of the drill pipe 24;

[0080] At the same time, since the bristles 33 are spiral-shaped and the water outlet holes 34 are located in the gaps between the bristles 33, the bristles 33 and the debris and impurities cleaned off the drill pipe 24 by the sprayed water flow can move under the action of the spiral-shaped bristles 33, enabling the cleaned debris and impurities to be carried out of the cleaning cylinder 32 by the water flow from the mounting holes on the fixing plate 31;

[0081] At the same time, by installing elastic sheets within the water outlet holes 34, when the water flow sprays out from the water outlet holes 34 into the cleaning cylinder 32, the elastic sheets are squeezed and opened. Meanwhile, when the water flow no longer sprays out from the water outlet holes 34, the elastic sheets will return to their original state and seal the water outlet holes 3;

[0082] Meanwhile, when it is necessary to clean or replace the installation box 3 and the cleaning cylinder 32, the staff removes the screws on the fixing plate 31 with tools, so that the fixing plate 31 is separated from the installation box 3, and then the cleaning cylinder 32 tightly pressed and installed in the installation box 3 by the fixing plate 31 can be easily disassembled;

[0083] The gap between the installation hole on the fixing plate 31 and the drill rod 24 is filled by the elastic plate 35, so that the space inside the installation box 3 and the cleaning cylinder 32 is relatively sealed. Thus, the water inside the installation box 3 and the cleaning cylinder 32 can accumulate, and the space inside the cleaning cylinder 32 is filled with water, so that the drill rod 24 located inside the cleaning cylinder 32 is in a state of being submerged by the water flow;

[0084] Meanwhile, since the inner wall of the through hole 351 is provided with evenly distributed ejection holes 352, after the cleaning cylinder 32 is fully filled with water, the water inside the cleaning cylinder 32 will be ejected again from the ejection holes 352. At this time, the water flow ejected from the ejection holes 352 will flow along the surface of the drill rod 24, as much as possible to make the ejected water flow cover the surface of the drill rod 24, make the surface of the drill rod 24 fully wet, cool down and cool the drill rod 24. At the same time, when the water ejected from the ejection holes 352 flows along the surface of the drill rod 24, the drill rod 24 will be cleaned again;

[0085] Since the diameter of the end of the ejection hole 352 close to the drilling rig mainframe 23 is relatively large, the water flow ejected from the cleaning cylinder 32 will be attached to the surface of the drill rod 24 as much as possible, and the water flow will flow along the surface of the drill rod 24;

[0086] Meanwhile, since the protection module is closely attached to the wall surface of the borehole in the roadway, the elastic plate 35 on the installation box 3 is relatively close to the wall surface of the borehole and the borehole. Thus, the water flow ejected from the ejection holes 352 and flowing along the surface of the drill rod 24 can relatively easily invade the gap between the borehole and the drill rod 24, so as to carry out the drill cuttings in the borehole;

[0087] Meanwhile, the debris and impurities cleaned from the drill rod 24 by the water flow and the brush bristles 33 inside the cleaning cylinder 32 will also enter the collection cylinder 4 from the ejection holes 352 along with the water flow. During this process, there is a possibility that the ejection holes 352 will be blocked by debris and impurities. When the ejection holes 352 are blocked, the pressure of the water flow in the cleaning cylinder 32 on the elastic plate 35 will gradually increase, so that the elastic plate 35 undergoes elastic deformation along the slit 353 on its surface, and the debris and impurities blocking the ejection holes 352 are washed away by the water flow;

[0088] After the water flow ejected from the ejection hole 352 flows along the surface of the drill pipe 24 and the water flow invades the borehole, the water flow will fall into the collection cylinder 4. At the same time, by installing a separation net 42 inside the collection cylinder 4, the water flow inside the collection cylinder 4 will fall onto the separation net 42. After that, the water flow and the debris and impurities carried in the water flow are separated by the separation net 42, and the separated water will pass through the separation net 42 and enter the independent space between the separation net 42 and the inner wall of the collection cylinder 4, and then enter the drain pipe 45 from the independent space, so that the debris and impurities carried in the water flow recovered through the drain pipe 45 are relatively few, avoiding drainage blockage and facilitating the reuse of the recovered water flow;

[0089] At the same time, the collection of the water flow by the collection cylinder 4 can further prevent the water flow from flowing onto the ground in the roadway, ensuring a good working environment in the roadway;

[0090] At the same time, the debris and impurities separated by the separation net 42 will slide along the arc surface of the separation net 42 and then be discharged to the outside of the collection cylinder 4 from the dropping groove 44 on the collection cylinder 4;

[0091] By installing the baffle 36, the water flow falling near the fixing plate 31 is blocked and guided, so that this part of the water flow can fall onto the separation net 42 under the action of the baffle 36, and this part of the water flow is separated by the separation net 42;

[0092] Since the separation net 42 is rotatably installed in the collection cylinder 4 and the elastic rod 43 is installed on the separation net 42, when the drill pipe 24 rotates, the drill pipe 24 will generate a force on the elastic rod 43, and then drive the separation net 42 to rotate through the elastic rod 43, so that the position of the separation net 42 for separating the water flow carrying debris and impurities is adjusted;

[0093] At the same time, due to the rough surface of the elastic rod 43 and the magnetic property of the elastic rod 43, when the elastic rod 43 contacts the drill pipe 24, there will be a force between the elastic rod 43 and the drill pipe 24, and then the drill pipe 24 drives the elastic rod 43 and the separation net 42 to rotate;

[0094] By setting the contact capsule 41 to fit and fill the pits and grooves on the borehole wall surface, it is ensured that the collection cylinder 4 is in full contact with the borehole wall surface;

[0095] At the same time, a plurality of groups of concentrically distributed convex rings 411 are arranged on the surface of the contact capsule 41, so that after the contact capsule 41 fits onto the borehole wall surface, the convex rings 411 are used to fully fill and seal the grooves and pits existing on the borehole wall surface.

[0096] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A pneumatic-hydraulic linkage drill for coal mine excavation, including a mobile frame (1). An equipment box (11) is installed on the mobile frame (1). A gas and liquid system is installed in the equipment box (11). A lifting rod (12) is installed on the mobile frame (1). A fixing block (121) is installed on the lifting rod (12). A connecting block (21) is rotatably installed on the fixing block (121). The connecting block (21) and the fixing block (121) are locked by a locking screw (22). A slide rail (2) is installed on the connecting block (21). A drill rig mainframe (23) is installed on the slide rail (2). A drill pipe (24) is installed on the drill rig mainframe (23). A protection module is also installed on the slide rail (2). The drill pipe (24) passes through the protection module; It is characterized in that: The protection module includes an installation box (3). The installation box (3) is fixedly installed at one end of the slide rail (2) away from the drill rig mainframe (23). A fixing plate (31) is installed at the end of the installation box (3) away from the drill rig mainframe (23). Installation holes are opened on the side wall of the installation box (3) close to the drill rig mainframe (23) and on the fixing plate (31). The drill pipe (24) passes through the installation holes. A sponge block (311) is installed in the installation holes on the installation box (3). The sponge block (311) is composed of multiple layers of sponge. A water-proof plastic film is installed between the layers of sponge in the sponge block (311); A cleaning cylinder (32) is installed in the installation box (3). The fixing plate (31) presses and fixes the cleaning cylinder (32) in the installation box (3). Sealing gaskets (321) are installed at both ends of the cleaning cylinder (32). The diameter of the cleaning cylinder (32) is larger than the diameter of the installation hole. Brush hairs (33) are installed on the inner wall of the cleaning cylinder (32). The brush hairs (33) are in contact with the surface of the drill pipe (24). Water outlet holes (34) are opened on the inner wall of the cleaning cylinder (32). A water inlet pipe (37) is installed on the installation box (3); A collection cylinder (4) is installed at the end of the installation box (3) away from the drill rig mainframe (23). A drain pipe (45) is installed on the collection cylinder (4); An elastic plate (35) is installed in the installation hole on the fixing plate (31). A through hole (351) is opened on the elastic plate (35). The drill pipe (24) passes through the through hole (351). Spray holes (352) evenly distributed are opened on the inner wall of the through hole (351). The center lines of the spray holes (352) are parallel to the center line of the through hole (351); A separation net (42) is installed in the collection cylinder (4). The cross section of the separation net (42) is arc-shaped. An independent space is formed between the separation net (42) and the inner wall of the collection cylinder (4). The drain pipe (45) communicates with one end of the independent space close to the drill rig mainframe (23); A dropping groove (44) is opened on the collection cylinder (4). The dropping groove (44) is located between the separation net (42) and the installation box (3); The separation net (42) is rotatably installed in the collection cylinder (4). One end of the separation net (42) far from the installation box (3) is provided with an elastic rod (43). The elastic rod (43) has magnetism. The other end of the elastic rod (43) is in contact with the drill pipe (24). The surface of the elastic rod (43) is rough. A contact bladder (41) is installed on the surface of the collection cylinder (4) far from the installation box (3). A raised ring (411) is arranged on the surface of the contact bladder (41). There are multiple groups of the raised rings (411), and the raised rings (411) are concentrically distributed.

2. The gas-liquid drive drill for coal mine excavation according to claim 1, characterized in that: Multiple groups of bristles (33) are arranged in the cleaning cylinder (32). The bristles (33) are distributed in a spiral shape. The water outlet holes (34) are located in the gaps between the groups of bristles (33). The outlet direction of the water outlet holes (34) faces the surface of the drill pipe (24). An elastic sheet is installed in the water outlet hole (34).

3. The gas-liquid drive drill for coal mine excavation according to claim 2, characterized in that: A slit (353) is formed in the elastic plate (35). The slit (353) is distributed along the radial direction of the through hole (351). The diameter of the ejection hole (352) at the end close to the drilling machine main body (23) is larger than the diameter of the ejection hole (352) at the end close to the collection cylinder (4).

4. The gas-liquid linkage drill for coal mine excavation according to claim 3, wherein: A baffle (36) is installed on the installation box (3). The diameter of the baffle (36) is greater than or equal to the diameter of the installation hole on the fixing plate (31). The separation net (42) is located outside the end of the baffle (36) far from the installation box (3). There is an overlapping area between the separation net (42) and the baffle (36), and there is a gap between the separation net (42) and the baffle (36). The thickness of the baffle (36) at the end close to the installation box (3) is greater than the thickness of the baffle (36) at the end close to the separation net (42).

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