Hard rock coal mine heading machine with dust falling structure

Abstract

The invention discloses a hard rock coal mine heading machine with a dust falling structure, and relates to the technical field of engineering machinery, the hard rock coal mine heading machine comprises a heading machine body, a water inlet pipe and a dust falling pipe installed on one side of the fixed top of the heading machine body, a collecting box is fixedly installed on one side of the heading machine body, and one side of the bottom of the dust falling pipe is connected with a gas conveying pipe; the bottom end of the gas conveying pipe is installed on the heading machine body, the side, close to the collecting box, of the dust falling pipe is fixedly connected with a discharging pipe through a flange, the end, away from the dust falling pipe, of the discharging pipe is communicated with the collecting box, and a flow baffle is fixedly connected to the middle of the inner bottom face of the collecting box. A water outlet is formed in one side of the front surface of the collecting box; the adjusting assembly is arranged on the side, away from the air outlet pipe, of the interior of the dust falling pipe, and the problems that driving of the dust removal device is associated with rotation of the drill bit, when tunneling operation is not needed and only dust removal is needed, the drill bit idles, energy consumption is high, and the dust removal efficiency is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a hard rock coal mine tunneling machine with a dust reduction structure. Background Art

[0002] Rock tunnel boring machines can simultaneously realize tunnel construction operations such as pushing, breaking rock, mucking and supporting. They have outstanding advantages such as speed, quality, safety, economy and environmental protection. They are increasingly widely used in tunnel projects such as water conservancy, electricity, railways, coal, mining, transportation, subways and urban underground projects. When the tunnel boring machine is working, it will produce a lot of smoke and dust, which needs to be collected and treated.

[0003] For example, a tunnel boring machine with a dust reduction function, with publication number CN218644279U, comprises: a mechanical arm, the front end of which is fixedly connected to a drill bit for excavating a mountain, and the outer surface of the rear end of the drill bit is fixedly connected to a transmission rod for transmitting the drill bit; a dust reduction component, which is located on the annular outer surface of the mechanical arm and close to the drill bit, and can spray dust reduction liquid; a rotating component, which is driven by the transmission rod to rotate the rotating ring when the drill bit rotates, and dust is reduced in the excavation area through the nozzle to prevent low visibility caused by excessive dust, and the dust is removed through the card slot. With the cooperation of the drill bit and the card plate, the drill bit will continue to rotate for a period of time after shutdown to ensure the dust reduction effect. The limiting component can limit the angle of the nozzle to a certain extent to improve the dust reduction effect and prevent dust from being inhaled into the bodies of construction workers. At the same time, it is convenient for construction workers to intuitively see the excavation effect. However, the drive of the dust removal device is related to the rotation of the drill bit, so that when the dust removal device is used, the drill bit must be started. When excavation operation is not required and only dust removal is required, the drill bit will cause idling, resulting in high energy consumption, large limitations on dust removal, and affected dust removal efficiency.

[0004] Therefore, we propose a hard rock coal mine roadheader with a dust reduction structure to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a hard rock coal mine tunneling machine with a dust reduction structure to solve the problem that the drive of the dust removal device is related to the rotation of the drill bit. When tunneling operation is not required and only dust removal is required, the drill bit will cause idling, resulting in high energy consumption and affected dust removal efficiency.

[0006] To achieve the above object, the present invention provides the following technical solution: a hard rock coal mine tunneling machine with a dust reduction structure, comprising a tunneling machine body, a water inlet pipe and a dust reduction pipe installed on one side of the fixed top of the tunneling machine body, a collecting box is fixedly installed on one side of the tunneling machine body, a gas delivery pipe is connected to one side of the bottom of the dust reduction pipe, and the bottom end of the gas delivery pipe is installed on the tunneling machine body; Also includes: A discharge pipe is fixedly connected to the dust suppression pipe on one side close to the collection box through a flange, and an end of the discharge pipe away from the dust suppression pipe is connected to the collection box. A baffle is fixedly connected to the middle of the inner bottom surface of the collection box, and a drain port is installed on one side of the front of the collection box. An air outlet pipe is fixedly connected to one side of the upper part of the gas delivery pipe, one end of the air outlet pipe is connected to the gas delivery pipe, the other end of the air outlet pipe is connected to the inside of the dust suppression pipe, and an exhaust passage is opened inside the air outlet pipe; A guide block is fixedly connected to the inner side of the dust suppression pipe, the guide block is located on the side of the gas outlet pipe away from the gas delivery pipe, and an inverted cone-shaped through hole is opened inside the guide block; An adjusting component is arranged on a side of the dust suppression pipe away from the air outlet pipe, the adjusting component comprises symmetrically arranged fixing rods, the fixing rods are fixedly connected to the top of the dust suppression pipe, the inner sides of the top ends of the two fixing rods are fixedly connected with connecting sleeves, the inside of the connecting sleeves is rotatably connected with a screw rod, the outer side of the screw rod is sleeved with a threaded sleeve, a vertical groove is provided in the middle of the top of the dust suppression pipe, the bottom end of the threaded sleeve is fixedly connected with a bottom plate, one side of the bottom plate is rotatably connected with a left clamping plate, and the other side of the bottom plate is rotatably connected with a right clamping plate; The outer sides of the inner circles of the left and right clamping plates are sleeved with outer film bodies, and both ends of the outer film bodies are fixedly connected to the dust removal pipe. The inner bottom surface of the right clamping plate is provided with a step groove, and the bottom of the left clamping plate is connected with a step block, and the step block is slidably connected to the step groove. The upper outer side of the screw rod is fixedly connected with a driving wheel, and the top side of the dust removal pipe is rotatably connected with a rotating shaft, and the upper outer side of the rotating shaft is fixedly connected with a driven wheel, and the driving wheel and the driven wheel are connected by belt adapters; The bottom end of the rotating shaft passes through the dust reduction pipe and is fixedly connected to a bevel gear. The inner side of the dust reduction pipe is fixedly connected to a fixed block. The fixed block is located on the side of the outer membrane body away from the guide block. The internal rotation of the fixed block is connected to a rotating ring. One side of the rotating ring is connected to a connecting pipe. The side of the connecting pipe away from the rotating ring is fixedly connected to a gear ring. The gear ring is meshed with the bevel gear. An inner ring body is installed on the inner side of the fixed block. A nozzle is fixedly installed on the inner array of the inner ring body. The outer ring of the inner ring body is fitted with the inner ring of the gear ring. The inner ring body is fixedly connected to the fixed block. The inner ring of the gear ring is provided with an inner hole, and the inner ring of the gear ring is provided with an outer hole.

[0007] Preferably, auxiliary blocks are symmetrically fixed on the inner side of the dust suppression pipe, and the auxiliary blocks are located at both ends of the outer membrane body. The screw rod is threadedly connected to the threaded sleeve, and the threaded sleeve is slidably connected to the vertical groove. A limiting strip is symmetrically fixed on the outer side of the threaded sleeve, and the inner ring diameter of the left clamping plate is smaller than the inner ring diameter of the right clamping plate. The left clamping plate and the right clamping plate are both located inside the outer membrane body.

[0008] By adopting the above technical scheme, an adjustment component is provided. When the dust reduction efficiency needs to be improved, the cross-sectional area between the left clamping plate and the right clamping plate can be reduced by rotating the screw rod. At this time, after the mixed gas flows through this point, the speed will be further accelerated. At the same time, the screw rod drives the driving wheel to rotate, and the driving wheel drives the driven wheel and the rotating shaft to rotate through the belt. When the inner hole on the inner side of the gear ring is connected with the outer hole on the inner side of the inner ring body, the outer hole will also correspond to spray dust reduction, which is convenient for increasing the flow rate of the smoke and dust mixed gas while also correspondingly improving the spray dust reduction effect, thereby further improving the dust reduction effect and dust reduction efficiency.

[0009] Preferably, the inner hole is connected to the interior of the inner ring body, the nozzle is connected to the interior of the gear ring, and the aperture of the inner hole is the same as the aperture of the outer hole.

[0010] By adopting the above technical solution, when the inner hole on the inner side of the gear ring is connected to the outer hole on the inner side of the inner ring body, the outer hole will also respond by spraying to reduce dust, thereby increasing the flow rate of the smoke and dust mixed gas while also improving the spraying dust reduction effect.

[0011] Preferably, the exhaust channel includes conical groove one and conical groove two, the conical groove one is connected to the conical groove two through a hole groove, the conical groove one is connected to the gas delivery pipe, the conical groove two is connected to the dust suppression pipe, and the diameter of the hole groove is smaller than the circular surface diameter of conical groove one and the circular surface diameter of conical groove two.

[0012] By adopting the above technical solution, high-pressure gas is input through the gas delivery pipe, and the high-pressure gas flows into the outlet pipe through the gas delivery pipe, and then flows into the guide block through the outlet pipe. At this time, due to the blocking guide of the exhaust channel and the guidance of the guide block, the internal front end of the dust reduction pipe is in a negative pressure state, thereby adsorbing smoke and dust into the interior of the dust reduction pipe.

[0013] Preferably, the top of the water inlet pipe is connected to the rotating ring, the interior of the rotating ring is connected to the connecting pipe, the interior of the connecting pipe is connected to the gear ring, the inner side of the inner ring body is fixedly connected with a nozzle, the nozzle is fixedly connected to the inner side of the fixed block, and the gear ring fits tightly with the inner ring body.

[0014] By adopting the above technical solution,

[0015] Preferably, a slide groove one is provided inside the fixed block, the slide groove one corresponds to the position of the rotating ring, the rotating ring is rotatably connected to the slide groove one, and the connecting pipe is rotatably connected to the slide groove one.

[0016] By adopting the above technical solution, the water inside the water inlet pipe flows into the connecting pipe through the rotating ring, then flows into the gear ring through the connecting pipe, and finally sprays out from the nozzle, removes dust from the mixed gas through the nozzle, and flows into the collection box for collection.

[0017] Preferably, a second slide groove is provided inside the fixed block, the second slide groove corresponds to the position of the gear ring, the gear ring is rotatably connected to the second slide groove, a groove is provided on one side of the top of the fixed block, the groove is located at the position of the rotating shaft, and the bevel gear is located inside the groove.

[0018] By adopting the above technical solution, the second slide groove is used to assist the rotation of the gear ring, so that the inner hole inside the gear ring can be rotated to adjust the position, thereby improving the spraying effect.

[0019] Preferably, the step grooves are evenly arranged on the right clamping plate, the number of the step grooves is no less than three, the top end of the step block is fixedly connected to the left clamping plate, and the number of the step blocks matches the step grooves.

[0020] By adopting the above technical solution, the bottom plate presses down the left and right clamping plates on both sides, so that the step block at the bottom of the left clamping plate slides into the inside of the step groove, making the cross-sectional area between the left and right clamping plates smaller. At this time, after the mixed gas flows through here, the speed will be further accelerated.

[0021] Preferably, the number of the inner holes is no less than four, and the number of the outer holes corresponds to the number of the inner holes.

[0022] By adopting the above technical solution, the more inner holes and outer holes are opened, the smaller the angle required for rotating until the inner holes and the outer holes are connected is.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: an adjustment component is provided, and when the dust reduction efficiency needs to be improved, the cross-sectional area between the left clamping plate and the right clamping plate can be reduced by rotating the screw rod. At this time, after the mixed gas flows through this place, the speed will be further accelerated, and at the same time, the screw rod drives the driving wheel to rotate, and the driving wheel drives the driven wheel and the rotating shaft to rotate through the belt. When the inner hole on the inner side of the gear ring is connected with the outer hole on the inner side of the inner ring body, the outer hole will also correspond to the spray dust reduction, which is convenient for increasing the flow rate of the smoke and dust mixed gas while also correspondingly improving the spray dust reduction effect, further improving the dust reduction effect and dust reduction efficiency; 1. An adjustment component is provided. When the dust reduction efficiency needs to be improved, the screw rod can be rotated. The screw rod rotates so that the threaded sleeve drives the bottom plate to move downward, and the bottom plate presses down the left and right clamping plates on both sides, so that the step block at the bottom of the left clamping plate slides into the inside of the step groove, thereby reducing the inner diameter between the left and right clamping plates. The outer membrane body is sleeved on the inner side of the left and right clamping plates and has a certain ductility, so that the cross-sectional area between the left and right clamping plates becomes smaller. At this time, after the mixed gas flows through this place, the speed will be further accelerated. At the same time, the screw rod drives the driving wheel to rotate, and the driving wheel drives the driven wheel and the rotating shaft to rotate through the belt, and the rotating shaft drives the bevel gear to rotate. The bevel gear drives the gear ring to rotate, and the gear ring drives the connecting pipe and the rotating ring to rotate a certain angle. The water inlet pipe is a telescopic hose, which is used to adapt to the small rotation of the rotating ring. The inner ring body remains stationary. When the inner hole on the inner side of the gear ring is connected with the outer hole on the inner side of the inner ring body, the outer hole will also correspond to spray dust reduction, which is convenient for increasing the flow rate of the smoke and dust mixed gas while also correspondingly improving the spray dust reduction effect, further improving the dust reduction effect and dust reduction efficiency, and solving the problem that the drive of the dust removal device is related to the rotation of the drill bit. When excavation operation is not required and only dust removal is required, the drill bit will cause idling, resulting in high energy consumption and affected dust removal efficiency. 2. A dust reduction pipe, a gas delivery pipe, an air outlet pipe, an exhaust channel and a guide block are provided. During dust reduction, high-pressure gas is input through the gas delivery pipe, and the high-pressure gas flows into the air outlet pipe through the gas delivery pipe, and then flows into the guide block through the air outlet pipe. At this time, due to the blocking guide of the exhaust channel and the guidance of the guide block, the internal front end of the dust reduction pipe is in a negative pressure state, and then smoke and dust are adsorbed into the interior of the dust reduction pipe, and the dust reduction is coordinated with the subsequent adjustment components, so that the dust reduction effect of the device is better. The dust removal device uses high-pressure gas as power, has no impeller, no moving parts, does not use power, and does not generate sparks. It is safe and reliable to use in an environment with explosive gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the cross-sectional structure of the dust suppression pipe of the present invention; Figure 2 This is a schematic diagram of the dust suppression pipe structure of the present invention; Figure 3 It is a schematic diagram of the overall structure of the present invention; Figure 4 This is a schematic diagram of the installation structure of the outer membrane body of the present invention; Figure 5 It is a schematic diagram of the installation structure of the left clamping plate and the right clamping plate of the present invention; Figure 6 This is a schematic diagram of reducing the inner diameters of the left and right splints of the present invention; Figure 7 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 8For the present invention Figure 5 The enlarged structural diagram at B in the middle; Fig. 9 It is a schematic diagram of the cross-sectional structure of the fixing block of the present invention; Fig.10 For the present invention Fig. 9 The enlarged structural diagram at C in the middle; Fig.11 This is a schematic diagram of the gear ring structure of the present invention; Fig.12 It is a schematic diagram of the cross-sectional structure of the gear ring and the inner ring body of the present invention.

[0025] In the figure: 1. excavation machine body; 2. dust suppression pipe; 3. gas transmission pipe; 4. discharge pipe; 5. collection box; 6. baffle; 7. drain outlet; 8. air outlet pipe; 9. exhaust channel; 10. guide block; 11. auxiliary block; 12. fixing rod; 13. connecting sleeve; 14. screw rod; 15. threaded sleeve; 16. vertical groove; 17. bottom plate; 18. left clamping plate; 19. right clamping plate; 20. outer membrane body; 21. step groove; 22. step block; 23. driving wheel; 24. rotating shaft; 25. driven wheel; 26. bevel gear; 27. fixing block; 28. water inlet pipe; 29. ​​slide groove one; 30. rotating ring; 31. slide groove two; 32. gear ring; 33. connecting pipe; 34. groove; 35. inner ring body; 36. nozzle; 37. inner hole; 38. outer hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-12 The present invention provides a technical solution: a hard rock coal mine roadheader with a dust reduction structure, comprising a roadheader body 1, a water inlet pipe 28 and a dust reduction pipe 2 installed on one side of the fixed top of the roadheader body 1, a collecting box 5 is fixedly installed on one side of the roadheader body 1, a gas delivery pipe 3 is connected to one side of the bottom of the dust reduction pipe 2, and the bottom end of the gas delivery pipe 3 is installed on the roadheader body 1; A discharge pipe 4 is fixedly connected to the dust removal pipe 2 on one side close to the collection box 5 through a flange connection, and an end of the discharge pipe 4 away from the dust removal pipe 2 is connected to the collection box 5. A baffle plate 6 is fixedly connected to the middle of the inner bottom surface of the collection box 5, and a drain port 7 is installed on one side of the front of the collection box 5; An air outlet pipe 8 is fixedly connected to one side of the upper part of the gas delivery pipe 3, one end of the air outlet pipe 8 is connected to the gas delivery pipe 3, and the other end of the air outlet pipe 8 is connected to the inside of the dust suppression pipe 2, and an exhaust passage 9 is opened inside the air outlet pipe 8; The guide block 10 is fixedly connected to the inner side of the dust suppression pipe 2. The guide block 10 is located on the side of the gas outlet pipe 8 away from the gas delivery pipe 3. An inverted cone-shaped through hole is opened inside the guide block 10. The adjustment component is arranged on a side of the dust reduction pipe 2 away from the air outlet pipe 8. The adjustment component includes symmetrically arranged fixing rods 12, which are fixedly connected to the top of the dust reduction pipe 2. The inner sides of the top ends of the two fixing rods 12 are fixedly connected with connecting sleeves 13. The inside of the connecting sleeve 13 is rotatably connected with a screw rod 14. The outer side of the screw rod 14 is sleeved with a threaded sleeve 15. A vertical groove 16 is provided in the middle of the top of the dust reduction pipe 2. The bottom end of the threaded sleeve 15 is fixedly connected with a bottom plate 17. One side of the bottom plate 17 is rotatably connected with a left clamping plate 18, and the other side of the bottom plate 17 is rotatably connected with a right clamping plate 19. Auxiliary blocks 11 are symmetrically fixed on the inner side of the dust suppression pipe 2, and the auxiliary blocks 11 are located at both ends of the outer membrane body 20. The screw rod 14 is threadedly connected with the threaded sleeve 15, and the threaded sleeve 15 is slidingly connected with the vertical groove 16. The outer side of the threaded sleeve 15 is symmetrically fixed with a limiting strip. The inner ring diameter of the left clamping plate 18 is smaller than the inner ring diameter of the right clamping plate 19. The left clamping plate 18 and the right clamping plate 19 are both located inside the outer membrane body 20.

[0028] The outer side of the inner circle of the left clamping plate 18 and the right clamping plate 19 is sleeved with an outer membrane body 20, and the two ends of the outer membrane body 20 are fixedly connected to the dust reduction pipe 2. A step groove 21 is provided on the inner bottom surface of the right clamping plate 19, and a step block 22 is connected to the bottom of the left clamping plate 18. The step block 22 is slidably connected to the step groove 21. A driving wheel 23 is fixedly connected to the upper outer side of the screw rod 14, and a rotating shaft 24 is rotatably connected to one side of the top of the dust reduction pipe 2. A driven wheel 25 is fixedly connected to the upper outer side of the rotating shaft 24, and the driving wheel 23 and the driven wheel 25 are connected through belt adapters.

[0029] The bottom end of the rotating shaft 24 passes through the dust reduction pipe 2 and is fixedly connected to a bevel gear 26. A fixed block 27 is fixedly connected to the inner side of the dust reduction pipe 2. The fixed block 27 is located on the side of the outer membrane body 20 away from the guide block 10. The fixed block 27 is rotatably connected to a rotating ring 30. A connecting pipe 33 is connected to one side of the rotating ring 30. A gear ring 32 is fixedly connected to the side of the connecting pipe 33 away from the rotating ring 30. The gear ring 32 is meshed with the bevel gear 26. An inner ring body 35 is installed on the inner side of the fixed block 27. A nozzle 36 is fixedly installed on the inner array of the inner ring body 35. The outer ring of the inner ring body 35 fits with the inner ring of the gear ring 32. The inner ring body 35 is fixedly connected to the fixed block 27. The inner ring of the gear ring 32 is provided with an inner hole 37, and the inner ring of the gear ring 32 is provided with an outer hole 38.

[0030] The inner hole 37 is connected to the interior of the inner ring body 35 , and the nozzle 36 is connected to the interior of the gear ring 32 . The diameter of the inner hole 37 is the same as the diameter of the outer hole 38 . There are no less than four inner holes 37 , and the number of outer holes 38 corresponds to that of the inner holes 37 .

[0031] The top end of the water inlet pipe 28 is connected to the rotating ring 30, the interior of the rotating ring 30 is connected to the connecting pipe 33, the interior of the connecting pipe 33 is connected to the gear ring 32, the inner side of the inner ring body 35 is fixedly connected with a nozzle 36, the nozzle 36 is fixedly connected to the inner side of the fixed block 27, and the gear ring 32 fits tightly with the inner ring body 35.

[0032] A slide groove 29 is provided inside the fixed block 27 . The slide groove 29 corresponds to the position of the rotating ring 30 . The rotating ring 30 is rotatably connected to the slide groove 29 . The connecting pipe 33 is rotatably connected to the slide groove 29 .

[0033] A second slide groove 31 is provided inside the fixed block 27 , and the position of the second slide groove 31 corresponds to the position of the ring gear 32 , and the ring gear 32 is rotatably connected to the second slide groove 31 . A groove 34 is provided on one side of the top of the fixed block 27 , and the groove 34 is located at the position of the rotating shaft 24 , and the bevel gear 26 is located inside the groove 34 .

[0034] The step grooves 21 are evenly arranged on the right clamping plate 19 , and there are no less than three step grooves 21 . The top ends of the step blocks 22 are fixedly connected to the left clamping plate 18 , and the number of the step blocks 22 matches the number of the step grooves 21 .

[0035] Embodiment 1: Figure 1-12 As shown, an adjustment component is provided. When the device is in use, the excavation body 1 is started and moved to the dust suction position, high-pressure gas is input through the gas delivery pipe 3, and pressurized water is input through the water inlet pipe 28. The high-pressure gas enters the dust reduction pipe 2 and attracts the smoke and dust to the position of the auxiliary block 11. Since the inner diameter of the dust reduction pipe 2 is larger than the inner diameter of the outer membrane body 20, the flow rate will be accelerated after the gas is input to the inner side of the outer membrane body 20, and then the gas and smoke continue to be input to the inner side of the fixed block 27. The water inside the water inlet pipe 28 flows into the connecting pipe 33 through the rotating ring 30, and then flows into the gear ring 32 through the connecting pipe 33, and finally sprayed out from the nozzle 36. The mixed gas is dusted by the nozzle 36 and flows into the collection box 5 for collection.

[0036] When the dust reduction efficiency needs to be improved, the screw rod 14 can be rotated. The screw rod 14 rotates so that the threaded sleeve 15 drives the bottom plate 17 to move downward, and the bottom plate 17 presses down the left clamping plate 18 and the right clamping plate 19 on both sides, so that the step block 22 at the bottom of the left clamping plate 18 slides into the inside of the step groove 21, thereby reducing the inner diameter between the left clamping plate 18 and the right clamping plate 19. The outer membrane body 20 is sleeved on the inner side of the left clamping plate 18 and the right clamping plate 19, and has a certain ductility, so that the cross-sectional area between the left clamping plate 18 and the right clamping plate 19 becomes smaller.

[0037] At this time, after the mixed gas flows through this place, the speed will be further accelerated. At the same time, the screw 14 drives the driving wheel 23 to rotate, and the driving wheel 23 drives the driven wheel 25 and the rotating shaft 24 to rotate through the belt. The rotating shaft 24 drives the bevel gear 26 to rotate, and the bevel gear 26 drives the ring gear 32 to rotate. The ring gear 32 drives the connecting pipe 33 and the rotating ring 30 to rotate a certain angle. The water inlet pipe 28 is a telescopic hose, which is used to adapt to the small rotation of the rotating ring 30, and the inner ring body 35 remains stationary.

[0038] When the inner hole 37 on the inner side of the gear ring 32 is connected to the outer hole 38 on the inner side of the inner ring body 35, the outer hole 38 will also respond to spray dust reduction, so as to increase the flow rate of the smoke and dust mixed gas while also improving the spray dust reduction effect, further improving the dust reduction effect and efficiency, and solving the problem that the drive of the dust removal device is related to the rotation of the drill bit. When excavation operation is not required and only dust removal is required, the drill bit will cause idling, resulting in high energy consumption and affected dust removal efficiency.

[0039] The exhaust channel 9 includes conical groove 1 and conical groove 2. Conical groove 1 is connected to conical groove 2 through a hole groove. Conical groove 1 is connected to the gas delivery pipe 3, and conical groove 2 is connected to the dust reduction pipe 2. The diameter of the hole groove is smaller than the circular surface diameter of conical groove 1 and the circular surface diameter of conical groove 2.

[0040] Embodiment 2: Figure 1-3 As shown, during dust reduction, high-pressure gas is input through the gas delivery pipe 3, and the high-pressure gas flows into the outlet pipe 8 through the gas delivery pipe 3, and then flows into the guide block 10 through the outlet pipe 8. At this time, due to the blocking guide of the exhaust channel 9 and the guidance of the guide block 10, the internal front end of the dust reduction pipe 2 is in a negative pressure state, and then the smoke and dust are adsorbed into the interior of the dust reduction pipe 2, and the dust is reduced in cooperation with the subsequent adjustment components, so that the dust reduction effect of the device is better. The dust removal device uses high-pressure gas as power, has no impeller, no moving parts, does not use power, does not generate sparks, and is safe and reliable to use in an environment with explosive gas.

[0041] Working principle: When using the device, first, Figure 1-12 As shown, when the device is in use, the boring machine body 1 is started and moved to the dust suction position, high-pressure gas is input through the gas delivery pipe 3, and pressurized water is input through the water inlet pipe 28. The high-pressure gas enters the dust reduction pipe 2, and the high-pressure gas flows into the outlet pipe 8 through the gas delivery pipe 3, and then flows into the guide block 10 through the outlet pipe 8. At this time, due to the blocking guide of the exhaust channel 9 and the guidance of the guide block 10, the internal front end of the dust reduction pipe 2 is in a negative pressure state, and then the smoke and dust are adsorbed into the interior of the dust reduction pipe 2, and the dust is reduced in cooperation with the subsequent adjustment components, so that the dust reduction effect of the device is better.

[0042] Then the smoke is sucked and transported to the position of the auxiliary block 11. Since the inner diameter of the dust reduction pipe 2 is larger than the inner diameter of the outer membrane body 20, the flow rate will increase after the gas is input into the inner side of the outer membrane body 20. Then the gas and smoke continue to be input into the inner side of the fixed block 27. The water inside the water inlet pipe 28 flows into the connecting pipe 33 through the rotating ring 30, and then flows into the gear ring 32 through the connecting pipe 33, and finally sprayed out from the nozzle 36. The mixed gas is dusted through the nozzle 36 and flows into the collection box 5 for collection.

[0043] When the dust reduction efficiency needs to be improved, the screw rod 14 can be rotated. The screw rod 14 rotates so that the threaded sleeve 15 drives the bottom plate 17 to move downward, and the bottom plate 17 presses down the left clamping plate 18 and the right clamping plate 19 on both sides, so that the step block 22 at the bottom of the left clamping plate 18 slides into the inside of the step groove 21, thereby reducing the inner diameter between the left clamping plate 18 and the right clamping plate 19. The outer membrane body 20 is sleeved on the inner side of the left clamping plate 18 and the right clamping plate 19, and has a certain ductility, so that the cross-sectional area between the left clamping plate 18 and the right clamping plate 19 becomes smaller.

[0044] At this time, after the mixed gas flows through this place, the speed will be further accelerated. At the same time, the screw 14 drives the driving wheel 23 to rotate, and the driving wheel 23 drives the driven wheel 25 and the rotating shaft 24 to rotate through the belt. The rotating shaft 24 drives the bevel gear 26 to rotate, and the bevel gear 26 drives the ring gear 32 to rotate. The ring gear 32 drives the connecting pipe 33 and the rotating ring 30 to rotate a certain angle. The water inlet pipe 28 is a telescopic hose, which is used to adapt to the small rotation of the rotating ring 30. The inner ring body 35 remains stationary. When the inner hole 37 on the inner side of the ring gear 32 is connected with the outer hole 38 on the inner side of the inner ring body 35, the outer hole 38 will also correspond to spray dust reduction, which is convenient for increasing the flow rate of the smoke and dust mixed gas while also correspondingly improving the spray dust reduction effect, thereby further improving the dust reduction effect and dust reduction efficiency.

[0045] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hard rock coal mine roadheader with a dust reduction structure, comprising a roadheader body (1), a water inlet pipe (28), and a dust reduction pipe (2) mounted on one side of a fixed top of the roadheader body (1), a collecting box (5) being fixedly mounted on one side of the roadheader body (1), a gas delivery pipe (3) being connected to one side of a bottom of the dust reduction pipe (2), and a bottom end of the gas delivery pipe (3) being mounted on the roadheader body (1); It is characterized in that Also includes: A discharge pipe (4) is fixedly connected to a side of the dust reduction pipe (2) close to the collection box (5) via a flange connection, an end of the discharge pipe (4) away from the dust reduction pipe (2) is connected to the collection box (5), a baffle plate (6) is fixedly connected to the middle of the inner bottom surface of the collection box (5), and a drainage port (7) is installed on one side of the front of the collection box (5); An air outlet pipe (8) is fixedly connected to one side of the upper portion of the gas delivery pipe (3); one end of the air outlet pipe (8) is connected to the gas delivery pipe (3); the other end of the air outlet pipe (8) is connected to the interior of the dust suppression pipe (2); and an exhaust passage (9) is provided inside the air outlet pipe (8); A guide block (10) is fixedly connected to the inner side of the dust suppression pipe (2), the guide block (10) is located on a side of the gas outlet pipe (8) away from the gas delivery pipe (3), and an inverted cone-shaped through hole is provided inside the guide block (10); An adjustment component is arranged on a side of the dust reduction pipe (2) away from the air outlet pipe (8), the adjustment component comprising symmetrically arranged fixing rods (12), the fixing rods (12) being fixedly connected to the top of the dust reduction pipe (2), the top inner sides of the two fixing rods (12) being fixedly connected to connecting sleeves (13), the inside of the connecting sleeves (13) being rotatably connected to a screw rod (14), the outside of the screw rod (14) being sleeved with a threaded sleeve (15), a vertical groove (16) being provided in the middle of the top of the dust reduction pipe (2), the bottom end of the threaded sleeve (15) being fixedly connected to a bottom plate (17), one side of the bottom plate (17) being rotatably connected to a left clamping plate (18), and the other side of the bottom plate (17) being rotatably connected to a right clamping plate (19); The outer sides of the inner circles of the left clamping plate (18) and the right clamping plate (19) are sleeved with an outer film body (20), and the two ends of the outer film body (20) are fixedly connected to the dust removal pipe (2). The inner bottom surface of the right clamping plate (19) is provided with a step groove (21), and the bottom of the left clamping plate (18) is connected with a step block (22), and the step block (22) is slidably connected to the step groove (21). The upper outer side of the screw rod (14) is fixedly connected with a driving wheel (23), and the top side of the dust removal pipe (2) is rotatably connected with a rotating shaft (24), and the upper outer side of the rotating shaft (24) is fixedly connected with a driven wheel (25), and the driving wheel (23) and the driven wheel (25) are connected by belt adaption. The bottom end of the rotating shaft (24) passes through the dust removal pipe (2) and is fixedly connected to a bevel gear (26); a fixed block (27) is fixedly connected to one side of the interior of the dust removal pipe (2); the fixed block (27) is located on a side of the outer membrane body (20) away from the guide block (10); a rotating ring (30) is rotatably connected to the interior of the fixed block (27); a connecting pipe (33) is connected to one side of the rotating ring (30); and a gear ring (33) is fixedly connected to the side of the connecting pipe (33) away from the rotating ring (30). 32), the gear ring (32) is meshingly connected with the bevel gear (26), an inner ring body (35) is installed on one side of the interior of the fixed block (27), a nozzle (36) is fixedly installed in an array inside the inner ring body (35), the outer ring of the inner ring body (35) is in contact with the inner ring of the gear ring (32), the inner ring body (35) is fixedly connected to the fixed block (27), the inner ring of the gear ring (32) is provided with an inner hole (37), and the inner ring of the gear ring (32) is provided with an outer hole (38).

2. The hard rock coal mine boring machine with dust reduction structure according to claim 1, characterized in that: Auxiliary blocks (11) are symmetrically fixed on the inner side of the dust suppression pipe (2), and the auxiliary blocks (11) are located at both ends of the outer membrane body (20). The screw rod (14) is threadedly connected to the threaded sleeve (15), and the threaded sleeve (15) is slidably connected to the vertical groove (16). A limiting strip is symmetrically fixed on the outer side of the threaded sleeve (15). The inner diameter of the left clamping plate (18) is smaller than the inner diameter of the right clamping plate (19), and the left clamping plate (18) and the right clamping plate (19) are both located inside the outer membrane body (20).

3. The hard rock coal mine boring machine with dust reduction structure according to claim 1, characterized in that: The inner hole (37) is connected to the interior of the inner ring body (35), the nozzle (36) is connected to the interior of the gear ring (32), and the diameter of the inner hole (37) is the same as the diameter of the outer hole (38).

4. The hard rock coal mine boring machine with dust reduction structure according to claim 1, characterized in that: The exhaust passage (9) comprises a first conical groove and a second conical groove, wherein the first conical groove is connected to the second conical groove via a hole groove, the first conical groove is connected to a gas delivery pipe (3), and the second conical groove is connected to a dust suppression pipe (2), and the diameter of the hole groove is smaller than both the diameter of the circular surface of the first conical groove and the diameter of the circular surface of the second conical groove.

5. The hard rock coal mine boring machine with dust reduction structure according to claim 1, characterized in that: The top end of the water inlet pipe (28) is connected to the rotating ring (30), the interior of the rotating ring (30) is connected to the connecting pipe (33), the interior of the connecting pipe (33) is connected to the gear ring (32), the inner side of the inner ring body (35) is fixedly connected to a nozzle (36), the nozzle (36) is fixedly connected to the inner side of the fixed block (27), and the gear ring (32) and the inner ring body (35) are tightly fitted.

6. The hard rock coal mine boring machine with dust reduction structure according to claim 1, characterized in that: A slide groove 1 (29) is provided inside the fixed block (27), the slide groove 1 (29) corresponds to the position of the rotating ring (30), the rotating ring (30) is rotatably connected to the slide groove 1 (29), and the connecting pipe (33) is rotatably connected to the slide groove 1 (29).

7. The hard rock coal mine boring machine with dust reduction structure according to claim 1, characterized in that: A second slide groove (31) is provided inside the fixed block (27), the second slide groove (31) corresponds to the position of the gear ring (32), the gear ring (32) is rotatably connected to the second slide groove (31), a groove (34) is provided on one side of the top of the fixed block (27), the groove (34) is located at the position of the rotating shaft (24), and the bevel gear (26) is located inside the groove (34).

8. The hard rock coal mine boring machine with dust reduction structure according to claim 1, characterized in that: The step grooves (21) are evenly formed on the right clamping plate (19), and the number of the step grooves (21) is no less than three. The top end of the step block (22) is fixedly connected to the left clamping plate (18), and the number of the step blocks (22) matches the number of the step grooves (21).

9. The hard rock coal mine boring machine with dust reduction structure according to claim 8, characterized in that: The number of the inner holes (37) is no less than four, and the number of the outer holes (38) corresponds to the number of the inner holes (37).

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