Negative-pressure drainage dry-type deslagging and dust-removing device for bedding drilling coal rock powder

Abstract

The invention belongs to the technical field of dry-type deslagging of coal rock powder, and provides a bedding drilling coal rock powder negative pressure drainage dry-type deslagging and dedusting device which comprises a slag collecting box and a rubber pipe, a feeding pipe and a discharging pipe are arranged on the upper end face and the lower end face of the slag collecting box respectively, and the slag collecting box is communicated with a deslagging device used for conveying coal slag through the feeding pipe. And the discharging pipe is sequentially communicated with the negative pressure amplifying box and the slag discharging box through a rubber pipe. According to the coal and rock powder processing device, the negative pressure amplification box can generate negative pressure suction force, coal and rock powder enters the filtering sleeve through the feeding pipe under the suction force effect of the negative pressure amplification box, then the coal and rock powder with the small granularity is discharged into the slag collecting box through the flow guide holes in the filtering sleeve, and the coal and rock powder in the slag collecting box enters the slag discharging box through conveying of the rubber pipe; and the slag discharging box is used for conveying and guiding the coal rock powder.

Description

Technical Field

[0001] The invention belongs to the technical field of dry slag discharge of coal and rock powder, and in particular relates to a negative pressure drainage dry slag discharge and dust removal device for coal and rock powder in a layer drilling hole. Background Art

[0002] Mining refers to the extraction of naturally occurring minerals such as solids (such as coal and minerals). This includes underground or above-ground mining, the operation of mines, and all auxiliary work generally carried out at or near the mine site to process the raw materials, such as crushing, ore dressing and treatment.

[0003] During the coal mining process, the coal seam needs to be drilled and crushed, and then the crushed coal slag is sent to the outside of the mine through the slag discharge device. During the slag discharge process of the coal blocks, a large amount of coal rock powder will be mixed in the coal slag and the air. The coal rock powder needs to be collected and reused in the production process.

[0004] The existing dry slag and dust removal devices for negative pressure drainage of coal and rock powder in layer drilling generally collect the coal and rock powder by negative pressure adsorption. When the coal and rock powder is subjected to negative pressure adsorption, some of the coal and rock powder is easily adhered to the negative pressure device during the adsorption process because the particle size and humidity of some of the coal and rock powder are large. When used for a long time, a large amount of coal and rock powder adhered to the negative pressure device will accumulate, causing the negative pressure device to be blocked, thereby affecting the adsorption effect of the negative pressure device. Summary of the invention

[0005] The purpose of the present invention is to provide a dry slag and dust removal device for negative pressure drainage of coal and rock powder in layer drilling, aiming to solve the technical problem in the prior art that a large amount of coal and rock powder adhering to the negative pressure device will cause blockage of the negative pressure device and affect the adsorption effect of the negative pressure device.

[0006] The present invention is implemented as follows: a dry type slag removal and dust removal device for negative pressure drainage of coal rock powder in a layer drilling hole comprises a slag collecting box and a rubber tube, wherein the upper and lower end surfaces of the slag collecting box are respectively provided with a feed pipe and a discharge pipe, wherein the slag collecting box is connected to a slag discharge device for conveying coal slag through the feed pipe, wherein the discharge pipe is connected to a negative pressure amplification box and a slag discharge box in sequence through a rubber tube, wherein the rubber tube is connected to the side of the slag discharge box; The feed pipe is connected to a filter sleeve, a plurality of rows of flow guide holes are arranged at intervals on the side end surface of the filter sleeve, a baffle is fixedly arranged in the filter sleeve, an inner sleeve is fixedly connected to the baffle, a plurality of feed holes are arranged near the bottom of the inner sleeve, and a blocking net is arranged at each feed hole, and each feed hole is directly opposite to the flow guide hole on one side; The inner sleeve is provided with a scraping mechanism on the outside, which can clean the inner wall of the filter sleeve, the scraping mechanism is connected to a rolling mechanism, which can roll and dry the coal rock powder on the upper side of the baffle, the inner sleeve is provided with a material guide mechanism, which can vertically transport and dry the coal rock powder, the upper part of the inner sleeve is provided with a bulking mechanism for dispersing the coal rock powder, the baffle is provided with a filter screen, and the baffle is connected to a sealing component for sealing the filter screen; A plurality of air flow holes are provided at both the upper and lower ends of the material guide mechanism, and the material guide mechanism is fixedly connected with an electric sleeve, and the electric sleeve can close the air flow holes at the lower end of the material guide mechanism; A plurality of position sensors are arranged on the upper side of the filter sleeve, and the position sensors are all arranged on one side of the guide hole.

[0007] Further technical solution: the scraping mechanism includes a gear sleeve, a connecting rod, a scraper, a strip hole and a No. 1 motor; The gear sleeve is rotatably connected to the outer wall of the inner sleeve, and the gear sleeve is fixedly connected to multiple connecting rods, each of the connecting rods is fixedly connected to a scraper, the scraper is fitted with the inner wall of the filter sleeve, and the lower side of the scraper is vertically provided with strip holes, and the side wall of the inner sleeve is fixedly connected to motor No. 1, and the gear shaft of motor No. 1 is meshed with the gear sleeve.

[0008] Further technical solution: The rolling mechanism includes a rotating roller and a roller pressure strip, the rotating roller is rotatably connected to the scraper, and the outer side wall of the rotating roller is fixedly connected with a plurality of roller pressure strips, and an electric heater is arranged in the rotating roller.

[0009] Further technical solution: the material guiding mechanism comprises an electric sleeve rod, a material pushing blade, a second motor and a belt transmission pair; The fixed part of the electric sleeve is rotatably connected to the baffle, an electric heater is arranged in the electric sleeve, a pusher blade is spirally arranged at the telescopic end of the electric sleeve, a No. 2 motor is fixedly arranged on the bottom surface of the baffle, and a belt transmission pair is transmission-connected between the No. 2 motor and the fixed part of the electric sleeve.

[0010] Further technical solution: a plurality of air flow holes are provided at both upper and lower ends of the electric sleeve rod, the electric sleeve is fixedly connected to the inside of the electric sleeve rod, and a stopper is fixedly provided at the top of the electric sleeve rod.

[0011] Further technical solution: the bulk material mechanism includes a bulk material sleeve and a material guide plate, the upper end of the inner sleeve is rotatably connected to the bulk material sleeve, and a plurality of material guide plates are distributed on the side end surface of the bulk material sleeve. The No. 1 motor is a dual-axis motor, and the two output shafts of the No. 1 motor can rotate asynchronously, and the other gear shaft of the No. 1 motor is meshed with the outer wall of the bulk material sleeve.

[0012] Further technical solution: The closing component includes an electric telescopic rod and a sealing plate, the electric telescopic rod is fixedly connected to the lower end surface of the baffle, the telescopic end of the electric telescopic rod is fixedly connected to the sealing plate through a bracket, and the sealing plate abuts against the filter screen.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The negative pressure amplification box can generate negative pressure suction. Under the suction of the negative pressure amplification box, the coal rock powder enters the slag collecting box through the feeding pipe. The coal rock powder in the slag collecting box enters the slag discharge box through the rubber tube. The slag discharge box transports and guides the coal rock powder. 2. The coal rock powder with larger particle size in the filter sleeve falls onto the baffle, and the scraper mechanism can clean the inner wall of the filter sleeve. At this time, the roller pressing mechanism can roll and dry the coal rock powder on the upper side of the baffle. The crushed and dried coal rock powder is discharged into the slag box under the action of wind; 3. When too much coal-rock powder accumulates on the baffle, the electric sleeve is started to release the seal of the air flow hole, and the negative pressure wind passes through the material guide mechanism to dry the coal-rock powder accumulated on the lower side, thereby increasing the drying rate of the coal-rock powder accumulated at the bottom, and at the same time, the sealing component releases the blockade of the filter screen, and the dried coal-rock powder is directly discharged from the bottom into the slag box to avoid the accumulation of coal-rock powder in the filter sleeve; 4. When coal rock powder accumulates on the upper side of the baffle, the electric sleeve releases the seal of the air flow holes on the lower side of the electric sleeve rod. At this time, negative pressure wind enters the filter sleeve from the feed pipe, and then part of the negative pressure wind enters the electric sleeve rod from the air flow holes on the upper side of the electric sleeve rod. The negative pressure wind in the electric sleeve rod is heated and blown out from all the air flow holes on the lower side of the electric sleeve rod, thereby heating and blowing the coal rock powder accumulated on the lower side; in this process, the roller connected to the scraper reciprocates around the periphery of the feed hole, and the roller drives all the roller strips to roll the coal rock powder. At the same time, the roller can also crush the coal rock powder accumulated on the lower side through the roller strips, thereby forming a diversion channel between the feed hole and the diversion hole on the lower side, so that the wind in the electric sleeve rod can be blown to the diversion hole through the feed hole, thereby improving the drying and dispersion speed of the accumulated coal rock powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the internal structure of the slag collecting box in the present invention.

[0016] Figure 3 It is a structural schematic diagram of the scraping mechanism in the present invention.

[0017] Figure 4 It is a structural schematic diagram of the material guiding mechanism in the present invention.

[0018] Figure 5 for Figure 4 Schematic diagram of the structure of area A in the middle.

[0019] Figure 6 It is a structural schematic diagram of the bulk material mechanism in the present invention.

[0020] Figure 7 It is a structural schematic diagram of the rolling mechanism in the present invention.

[0021] In the attached drawings: 1. slag collecting box; 2. negative pressure amplification box; 3. slag discharge box; 4. scraper mechanism; 41. gear sleeve; 42. connecting rod; 43. scraper; 44. strip hole; 45. No. 1 motor; 5. rolling mechanism; 51. rotating roller; 52. rolling strip; 6. material guiding mechanism; 61. electric sleeve rod; 62. pushing blade; 63. No. 2 motor; 64. belt transmission pair; 7. bulk material mechanism; 71. bulk material sleeve; 72. material guiding plate; 8. baffle; 9. closing component; 91. electric telescopic rod; 92. sealing plate; 10. filter sleeve; 11. guide hole; 12. inner sleeve; 13. feed hole; 14. air flow hole; 15. electric sleeve; 16. filter screen; 17. block seat; 18. position sensor; 19. rubber tube; 20. feed pipe; 21. discharge pipe. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] like Figure 1-Figure 7 As shown, a dry-type slag removal and dust removal device for negative pressure drainage of coal rock powder in a layer drilling provided by the present invention comprises a slag collecting box 1 and a rubber tube 19. The upper and lower end surfaces of the slag collecting box 1 are respectively provided with a feed pipe 20 and a discharge pipe 21. The slag collecting box 1 is connected to a slag discharge device for conveying coal slag through the feed pipe 20. The discharge pipe 21 is connected to a negative pressure amplification box 2 and a slag discharge box 3 in sequence through the rubber tube 19. The rubber tube 19 is connected to the side of the slag discharge box 3. The feed pipe 20 is connected to a filter sleeve 10, and the side end surface of the filter sleeve 10 is provided with multiple rows of guide holes 11 at intervals. A baffle 8 is fixedly provided in the filter sleeve 10, and the baffle 8 is fixedly connected to an inner sleeve 12. The inner sleeve 12 is provided with multiple feed holes 13 near the bottom, and the feed holes 13 are all provided with blocking nets, and each feed hole 13 is directly opposite to the guide hole 11 on one side; The inner sleeve 12 is provided with a scraper mechanism 4 on the outside, and the scraper mechanism 4 can clean the inner wall of the filter sleeve 10. The scraper mechanism 4 is connected to a roller pressing mechanism 5, and the roller pressing mechanism 5 can roll and dry the coal rock powder on the upper side of the baffle 8. The inner sleeve 12 is provided with a material guide mechanism 6, and the material guide mechanism 6 can vertically transport and dry the coal rock powder. The upper part of the inner sleeve 12 is provided with a bulking mechanism 7 for dispersing the coal rock powder. The baffle 8 is provided with a filter screen 16, and the baffle 8 is connected to a sealing component 9 for sealing the filter screen 16. The upper and lower ends of the material guide mechanism 6 are both provided with a plurality of air flow holes 14, and the material guide mechanism 6 is fixedly connected with an electric sleeve 15, and the electric sleeve 15 can close the air flow holes 14 at the lower end of the material guide mechanism 6; A plurality of position sensors 18 are disposed on the upper side of the filter sleeve 10 , and the position sensors 18 are all disposed on one side of the guide hole 11 .

[0025] In this embodiment, the feed pipe 20 is connected to the coal slag conveying device, and the negative pressure amplification box 2 can generate negative pressure suction. Under the suction of the negative pressure amplification box 2, the coal rock powder enters the filter sleeve 10 through the feed pipe 20, and then the coal rock powder with smaller particle size is discharged into the slag collecting box 1 through the guide hole 11 on the filter sleeve 10. The coal rock powder in the slag collecting box 1 enters the slag discharge box 3 through the rubber tube 19, and the slag discharge box 3 conveys and guides the coal rock powder. During this process, the coal rock powder with larger particle size in the filter sleeve 10 falls onto the baffle 8, and the scraper mechanism 4 can clean the inner wall of the filter sleeve 10. At this time, the roller pressing mechanism 5 can roll and dry the coal rock powder on the upper side of the baffle 8. The crushed and dried coal rock powder is discharged into the slag collecting box 1 under the action of wind power; When too much coal-rock dust accumulates in the filter sleeve 10, the coal-rock dust on the lower side cannot be effectively dried and discharged, and the coal-rock dust blocks part of the guide holes 11, thereby accelerating the accumulation of coal-rock dust in the filter sleeve 10; In this embodiment, when too much coal rock powder accumulates on the baffle 8, the electric sleeve 15 is started to release the blockage of the air flow hole 14, and the negative pressure wind passes through the material guiding mechanism 6 to dry the coal rock powder accumulated on the lower side, thereby increasing the drying rate of the coal rock powder accumulated at the bottom. At the same time, the blockade of the filter screen 16 by the sealing component 9 is released, and the dried coal rock powder is directly discharged from the bottom into the slag collecting box 1, avoiding the accumulation of coal rock powder in the filter sleeve 10.

[0026] like Figure 3 As shown, a dry type slag removal and dust removal device for negative pressure drainage of coal rock powder in a layer drilling is provided by the present invention, wherein the scraper mechanism 4 comprises a gear sleeve 41, a connecting rod 42, a scraper 43, a strip hole 44 and a No. 1 motor 45; The gear sleeve 41 is rotatably connected to the outer wall of the inner sleeve 12, and a plurality of connecting rods 42 are fixedly connected to the gear sleeve 41. The connecting rods 42 are fixedly connected with scrapers 43. The scrapers 43 are fitted with the inner wall of the filter sleeve 10. The lower side of the scrapers 43 is vertically provided with strip holes 44. A motor No. 1 45 is fixedly connected to the side wall of the inner sleeve 12, and the gear shaft of the motor No. 1 45 is meshed with the gear sleeve 41.

[0027] In this embodiment, the No. 1 motor 45 is started, and the No. 1 motor 45 drives the gear sleeve 41 to rotate. The gear sleeve 41 drives all the scrapers 43 to move through the connecting rod 42. All the scrapers 43 scrape the coal rock powder on the inner wall of the filter sleeve 10 together to avoid clogging of the guide hole 11 on the filter sleeve 10.

[0028] like Figure 7 As shown, a dry slag and dust removal device for negative pressure drainage of coal rock powder in layer drilling provided by the present invention, the roller pressing mechanism 5 includes a roller 51 and a roller pressure strip 52, the roller 51 is rotatably connected to the scraper 43, and the outer wall of the roller 51 is fixedly connected with a plurality of roller pressure strips 52, and an electric heater is arranged in the roller 51.

[0029] In this embodiment, each scraper 43 can drive a roller 51 to move synchronously, and all the rolling strips 52 on the roller 51 roll and dry the coal rock powder on the upper side of the baffle 8.

[0030] like Figure 4 As shown, a negative pressure drainage dry slag and dust removal device for drilling coal and rock powder in a layer according to the present invention is provided, wherein the material guide mechanism 6 comprises an electric sleeve rod 61, a material pusher blade 62, a second motor 63 and a belt transmission pair 64; The fixed part of the electric sleeve rod 61 is rotatably connected to the baffle 8, an electric heater is arranged in the electric sleeve rod 61, a pusher blade 62 is spirally arranged at the telescopic end of the electric sleeve rod 61, a No. 2 motor 63 is fixedly arranged on the bottom surface of the baffle 8, and a belt transmission pair 64 is transmission-connected between the No. 2 motor 63 and the fixed part of the electric sleeve rod 61.

[0031] In this embodiment, in the filter sleeve 10, after being roller-pressed and crushed by the roller-pressing mechanism 5, the coal rock powder on the upper side of the baffle 8 enters the inner sleeve 12 through the feed hole 13, and the No. 2 motor 63 is started. The No. 2 motor 63 drives the electric sleeve rod 61 to rotate through the belt transmission pair 64, and the electric sleeve rod 61 drives the pushing blades 62 to push the coal rock powder upward. At the same time, the electric heater in the electric sleeve rod 61 dries the coal rock powder, and the dried coal rock powder is thrown down from the upper end of the inner sleeve 12. Then, under the action of negative pressure wind, the crushed and dried coal rock powder floats from the filter sleeve 10 to the guide hole 11.

[0032] like Figure 6As shown, a negative pressure drainage dry slag and dust removal device for coal rock powder in layer drilling provided by the present invention is provided. A plurality of air flow holes 14 are provided at the upper and lower ends of the electric sleeve 61, the electric sleeve 15 is fixedly connected to the inside of the electric sleeve 61, and a stopper 17 is fixedly provided on the top of the electric sleeve 61.

[0033] In this embodiment, when coal rock dust accumulates on the upper side of the baffle 8, the No. 1 motor 45 is started, and the No. 1 motor 45 drives all the scrapers 43 to move to the lower side of the corresponding position sensor 18 respectively, and the No. 1 motor 45 is started to drive all the scrapers 43 to swing near the lower side of the corresponding position sensor 18. At this time, the scrapers 43 close part of the guide holes 11 on the upper side, so that the negative pressure wind force is concentrated from the part of the guide holes 11 on the lower side of the filter sleeve 10 to the slag collecting box 1, thereby increasing the blowing effect of the wind force on the accumulated coal rock dust; At this time, the electric sleeve 15 is started to contract, and the electric sleeve 15 releases the seal of the air flow hole 14 on the lower side of the electric sleeve rod 61. At this time, negative pressure wind enters the filter sleeve 10 from the feed pipe 20, and then part of the negative pressure wind enters the electric sleeve rod 61 from the air flow hole 14 on the upper side of the electric sleeve rod 61. The negative pressure wind in the electric sleeve rod 61 is heated and blown out from all the air flow holes 14 on the lower side of the electric sleeve rod 61, thereby heating and blowing the coal rock powder accumulated on the lower side; During this process, since all the scrapers 43 swing near the lower side of the corresponding position sensor 18, the rollers 51 connected to the scrapers 43 reciprocate around the periphery of the feed hole 13. The rollers 51 drive all the roller pressure strips 52 to roll the coal rock powder. At the same time, the rollers 51 can also crush the coal rock powder accumulated on the lower side through the roller pressure strips 52, so that a guide channel is formed between the feed hole 13 and the guide hole 11 on the lower side, so that the wind force in the electric sleeve rod 61 can pass through the feed hole 13 and blow to the guide hole 11, so that the dried coal rock powder can be blown to the outside of the filter sleeve 10 in time, thereby improving the drying and dispersion speed of the accumulated coal rock powder. At this time, the sealing component 9 is started to release the seal of the filter screen 16, and the coal rock powder accumulated on the lower side of the inner sleeve 12 can be exported to the outside of the filter sleeve 10 through the filter screen 16.

[0034] Furthermore, at this time, the No. 2 motor 63 is stopped to drive the electric sleeve rod 61 to rotate, and the electric sleeve rod 61 is started to reciprocate and extend. The coal rock powder accumulated on the electric sleeve rod 61 can be accelerated to fall, and then the coal rock powder is quickly discharged from the filter screen 16 on the lower side to the outside of the filter sleeve 10, thereby avoiding the accumulation of coal rock powder in the inner sleeve 12, which makes the hot air in the electric sleeve rod 61 unable to diffuse to the outside of the inner sleeve 12.

[0035] like Figure 6As shown, a negative pressure drainage dry slag and dust removal device for coal and rock powder in layer drilling provided by the present invention is provided, the bulking mechanism 7 includes a bulking sleeve 71 and a guide plate 72, the upper end of the inner sleeve 12 is rotatably connected with the bulking sleeve 71, and a plurality of guide plates 72 are distributed on the side end surface of the bulking sleeve 71, the No. 1 motor 45 is a dual-axis motor, and the two output shafts of the No. 1 motor 45 can rotate asynchronously, and the other gear shaft of the No. 1 motor 45 is meshed with the outer wall of the bulking sleeve 71.

[0036] In this embodiment, the No. 1 motor 45 can drive the bulk material sleeve 71 to rotate, and the guide plate 72 on the bulk material sleeve 71 can evenly disperse the coal rock powder in the inner sleeve 12 into the filter sleeve 10, and then the coal rock powder enters the slag box 1 under the action of negative pressure wind.

[0037] like Figure 4 As shown, a negative pressure drainage dry slag and dust removal device for coal rock powder in layer drilling provided by the present invention, the closing component 9 includes an electric telescopic rod 91 and a sealing plate 92, the electric telescopic rod 91 is fixedly connected to the lower end surface of the baffle 8, the telescopic end of the electric telescopic rod 91 is fixedly connected to the sealing plate 92 through a bracket, and the sealing plate 92 abuts against the filter screen 16.

[0038] In this embodiment, the electric telescopic rod 91 is started to extend, and the electric telescopic rod 91 drives the sealing plate 92 to separate from the baffle 8, so that the sealing plate 92 releases the seal on the filter screen 16, so that the coal rock powder accumulated on the upper side of the baffle 8 can quickly fall into the slag box 1.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A dry type slag removal and dust removal device for coal rock powder negative pressure drainage in a layer drilling, comprising a slag collecting box (1) and a rubber tube (19), wherein the upper and lower end surfaces of the slag collecting box (1) are respectively provided with a feed pipe (20) and a discharge pipe (21), and the slag collecting box (1) is connected to a slag removal device for conveying coal slag through the feed pipe (20), characterized in that: The discharge pipe (21) is connected to the negative pressure amplification box (2) and the slag discharge box (3) in sequence through a rubber tube (19), and the rubber tube (19) is connected to the side of the slag discharge box (3); The feed pipe (20) is connected to a filter sleeve (10), a side end surface of the filter sleeve (10) is provided with a plurality of rows of guide holes (11) at intervals, a baffle (8) is fixedly provided in the filter sleeve (10), the baffle (8) is fixedly connected to an inner sleeve (12), a plurality of feed holes (13) are provided near the bottom of the inner sleeve (12), a screen is provided at each of the feed holes (13), and each feed hole (13) is directly opposite to the guide hole (11) on one side; The inner sleeve (12) is provided with a scraping mechanism (4) on the outside, the scraping mechanism (4) can clean the inner wall of the filter sleeve (10), the scraping mechanism (4) is connected to a rolling mechanism (5), the rolling mechanism (5) can roll and dry the coal and rock powder on the upper side of the baffle (8), the inner sleeve (12) is provided with a material guide mechanism (6), the material guide mechanism (6) can vertically transport and dry the coal and rock powder, the upper part of the inner sleeve (12) is provided with a bulking mechanism (7) for dispersing the coal and rock powder, the baffle (8) is provided with a filter screen (16), and the baffle (8) is connected to a sealing component (9) for sealing the filter screen (16); A plurality of air flow holes (14) are provided at both upper and lower ends of the material guiding mechanism (6); the material guiding mechanism (6) is fixedly connected to an electric sleeve (15); and the electric sleeve (15) is capable of sealing the air flow holes (14) at the lower end of the material guiding mechanism (6); A plurality of position sensors (18) are arranged on the upper side of the filter sleeve (10), and the position sensors (18) are all arranged on one side of the guide hole (11).

2. The device for negative pressure drainage of coal rock powder in bed drilling according to claim 1 is characterized in that: The scraping mechanism (4) comprises a gear sleeve (41), a connecting rod (42), a scraper (43), a strip hole (44) and a first motor (45); The gear sleeve (41) is rotatably connected to the outer wall of the inner sleeve (12); the gear sleeve (41) is fixedly connected to a plurality of connecting rods (42); each of the connecting rods (42) is fixedly connected to a scraper (43); the scraper (43) is in contact with the inner wall of the filter sleeve (10); each of the scrapers (43) is vertically provided with a strip hole (44); a side wall of the inner sleeve (12) is fixedly connected to a first motor (45); and a gear shaft of the first motor (45) is meshed with the gear sleeve (41).

3. The negative pressure drainage dry slag and dust removal device for coal rock powder in bed drilling according to claim 1 is characterized in that: The rolling mechanism (5) comprises a rotating roller (51) and a rolling strip (52); the rotating roller (51) is rotatably connected to the scraper (43); a plurality of rolling strips (52) are fixedly connected to the outer side wall of the rotating roller (51); and an electric heater is provided in the rotating roller (51).

4. The device for negative pressure drainage of coal rock powder in bed drilling according to claim 1 is characterized in that: The material guiding mechanism (6) comprises an electric sleeve rod (61), a material pushing blade (62), a second motor (63) and a belt transmission pair (64); The fixed portion of the electric sleeve rod (61) is rotatably connected to the baffle plate (8), an electric heater is provided in the electric sleeve rod (61), a pusher blade (62) is spirally provided at the telescopic end of the electric sleeve rod (61), a second motor (63) is fixedly provided on the bottom surface of the baffle plate (8), and a belt transmission pair (64) is transmission-connected between the second motor (63) and the fixed portion of the electric sleeve rod (61).

5. The device for negative pressure drainage of coal rock powder in bed drilling according to claim 4 is characterized in that: A plurality of air flow holes (14) are provided at both upper and lower ends of the electric sleeve rod (61); the electric sleeve (15) is fixedly connected to the inside of the electric sleeve rod (61); and a stopper (17) is fixedly provided at the top of the electric sleeve rod (61).

6. The negative pressure drainage dry type slag removal and dust removal device for coal rock powder in bed drilling according to claim 2 is characterized in that: The bulk material mechanism (7) comprises a bulk material sleeve (71) and a material guide plate (72); the upper end of the inner sleeve (12) is rotatably connected to the bulk material sleeve (71); a plurality of material guide plates (72) are distributed on the side end surface of the bulk material sleeve (71); the No. 1 motor (45) is a double-shaft motor, and the two output shafts of the No. 1 motor (45) can rotate asynchronously; the other gear shaft of the No. 1 motor (45) is meshed with the outer wall of the bulk material sleeve (71).

7. The device for negative pressure drainage of coal rock powder in bed drilling according to claim 1 is characterized in that: The sealing assembly (9) comprises an electric telescopic rod (91) and a sealing plate (92); the electric telescopic rod (91) is fixedly connected to the lower end surface of the baffle (8); the telescopic end of the electric telescopic rod (91) is fixedly connected to the sealing plate (92) via a bracket; the sealing plate (92) abuts against the filter screen (16).

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