A hard-rock coal roadheader with a dust reduction structure

Abstract

The invention discloses a hard rock coal mine tunneling machine with a dust reduction structure, which relates to the technical field of engineering machinery, comprising a tunneling machine body, a water inlet pipe and a dust reduction pipe installed on one side of a fixed top of the tunneling machine body, a collecting box is fixedly installed on one side of the tunneling machine body, a bottom side of the dust reduction pipe is connected to a gas delivery pipe, the bottom end of the gas delivery pipe is installed on the tunneling machine body, and also comprises: a side of the dust reduction pipe close to the collecting box is fixedly connected with an exhaust pipe through a flange, an end of the exhaust pipe away from the dust reduction pipe is connected to the collecting box, a baffle is fixedly connected in the middle of the inner bottom surface of the collecting box, and a drain outlet is installed on one side of the front of the collecting box; an adjusting component is arranged on the side of the dust reduction pipe away from the air outlet pipe, which solves 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 be caused to idle, resulting in high energy consumption and affected dust removal efficiency.

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;

[0007] Further included are:

[0008] On one side of the dust - settling pipe close to the collection box, a discharge pipe is fixedly connected through a flange. One end of the discharge pipe away from the dust - settling pipe is communicated with the collection box. In the middle of the inner bottom surface of the collection box, a baffle is fixedly connected. On one side of the front of the collection box, a drain port is installed;

[0009] 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 communicated with the gas delivery pipe, and the other end of the air outlet pipe is communicated with the inside of the dust - settling pipe. An exhaust passage is provided inside the air outlet pipe;

[0010] A guiding block is fixedly connected to the inner side of the dust - settling pipe. The guiding block is located on the side of the air outlet pipe away from the gas delivery pipe. An inverted - conical through - hole is provided inside the guiding block;

[0011] An adjusting assembly is arranged on the side of the inside of the dust - settling pipe away from the air outlet pipe. The adjusting assembly includes symmetrically arranged fixing rods. The fixing rods are fixedly connected to the top of the dust - settling pipe. Inside the tops of the two fixing rods, a connecting sleeve is fixedly connected. A lead screw is rotatably connected inside the connecting sleeve. A threaded sleeve is sleeved on the outer side of the lead screw. A vertical groove is provided in the middle of the top of the dust - settling pipe. The bottom end of the threaded sleeve is fixedly connected to a bottom plate. On one side of the bottom plate, a left clamping plate is rotatably connected, and on the other side of the bottom plate, a right clamping plate is rotatably connected;

[0012] An outer membrane body is sleeved on the outer sides of the inner circles of the left clamping plate and the right clamping plate. Both ends of the outer membrane body are fixedly connected to the dust - settling pipe. A stepped groove is provided on the inner bottom surface of the right clamping plate. A stepped block is connected to the bottom of the left clamping plate. The stepped block is slidably connected with the stepped groove. A driving wheel is fixedly connected to the outer side of the upper part of the lead screw. A rotating shaft is rotatably connected to one side of the top of the dust - settling pipe. A driven wheel is fixedly connected to the outer side of the upper part of the rotating shaft. The driving wheel and the driven wheel are adaptively connected through a belt;

[0013] The bottom end of the rotating shaft passes through the dust - settling pipe and is fixedly connected to a bevel gear. On one side inside the dust - settling pipe, a fixed block is fixedly connected. The fixed block is located on the side of the outer membrane body away from the guiding block. A rotating ring is rotatably connected inside the fixed block. One side of the rotating ring is connected to a communicating pipe. The side of the communicating pipe away from the rotating ring is fixedly connected to a toothed ring. The toothed ring is meshed with the bevel gear. On one side inside the fixed block, an inner ring body is installed. Nozzles are fixedly installed in an array on the inner side of the inner ring body. The outer circle of the inner ring body is in contact with the inner circle of the toothed ring. The inner ring body is fixedly connected to the fixed block. An inner hole is provided in the inner circle of the toothed ring, and an outer hole is provided in the inner circle of the inner ring body.

[0014] Preferably, auxiliary blocks are symmetrically fixed inside the dust-removing pipe. The auxiliary blocks are located at both ends of the outer membrane body. The screw rod is threadedly connected to the threaded sleeve. The threaded sleeve is slidably connected to the vertical groove. Limiting strips are symmetrically fixed on the outer side of the threaded sleeve. The inner diameter of the left clamping plate is smaller than the inner diameter of the right clamping plate. Both the left clamping plate and the right clamping plate are located inside the outer membrane body.

[0015] By adopting the above technical solution, an adjustment component is provided. When it is necessary to improve the dust-removing efficiency, the screw rod can be rotated, which can make the cross-sectional area between the left clamping plate and the right clamping plate smaller. At this time, after the mixed gas flows through here, the speed will be further increased. 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 to the outer hole on the inner side of the inner ring body, the outer hole will also spray for dust removal correspondingly, which is convenient for improving the spray dust-removing effect while increasing the flow rate of the smoke and dust mixed gas, and further improving the dust-removing effect and efficiency.

[0016] Preferably, when the inner hole rotates, it is intermittently connected to the inside of the inner ring body. The nozzle is connected to the inside of the gear ring. The aperture of the inner hole is the same as the aperture of the outer hole.

[0017] 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 spray for dust removal correspondingly, which is convenient for improving the spray dust-removing effect while increasing the flow rate of the smoke and dust mixed gas.

[0018] Preferably, the exhaust passage includes a first conical groove and a second conical groove. The first conical groove is connected to the second conical groove through a hole groove. The first conical groove is connected to the gas delivery pipe. The second conical groove is connected to the dust-removing pipe. The diameter of the hole groove is smaller than both the circular surface diameter of the first conical groove and the circular surface diameter of the second conical groove.

[0019] By adopting the above technical solution, high-pressure gas is input through the gas delivery pipe. The high-pressure gas flows into the outlet pipe through the gas delivery pipe and then into the guide block through the outlet pipe. At this time, due to the blocking and guiding of the exhaust passage and the guiding of the guide block, the front end inside the dust-removing pipe is in a negative pressure state, and then dust and smoke are adsorbed into the inside of the dust-removing pipe.

[0020] Preferably, the top end of the water inlet pipe is connected to the rotating ring. The inside of the rotating ring is connected to the connecting pipe. The inside of the connecting pipe is connected to the gear ring. A nozzle is fixedly connected to the inner side of the inner ring body. The nozzle is fixedly connected to the inner side of the fixed block. The gear ring is closely attached to the inner ring body.

[0021] By adopting the above technical solution.

[0022] Preferably, a first chute is formed inside the fixed block. The first chute corresponds to the position of the rotating ring. The rotating ring is rotatably connected to the first chute, and the communicating pipe is rotatably connected to the first chute.

[0023] By adopting the above technical solution, the water inside the water inlet pipe flows into the communicating pipe through the rotating ring, then flows into the gear ring through the communicating pipe, and finally sprays out from the nozzle. The mixed gas is dust-removed by the nozzle and then collected in the collection box.

[0024] Preferably, a second chute is formed inside the fixed block. The second chute corresponds to the position of the gear ring. The gear ring is rotatably connected to the second chute. A groove is formed on one side of the top of the fixed block at the position of the rotating shaft, and the bevel gear is located inside the groove.

[0025] By adopting the above technical solution, the second chute is used to assist the rotation of the gear ring, so that the inner hole inside the gear ring can rotate and adjust its position, thereby improving the spraying effect.

[0026] Preferably, the stepped grooves are evenly formed on the right clamping plate, and the number of the stepped grooves is not less than three. The top end of the stepped block is fixedly connected to the left clamping plate, and the number of the stepped blocks matches the number of the stepped grooves.

[0027] By adopting the above technical solution, when the bottom plate presses down the left and right clamping plates on both sides, the stepped blocks at the bottom of the left clamping plate slide into the stepped grooves, so that the cross-sectional area between the left and right clamping plates becomes smaller. At this time, when the mixed gas flows through here, the speed will be further increased.

[0028] Preferably, the number of the inner holes is not less than four, and the number of the outer holes corresponds to the number of the inner holes.

[0029] By adopting the above technical solution, the more the inner holes and outer holes are formed, the smaller the angle required for the inner holes and outer holes to communicate when rotating.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: An adjusting component is provided. When it is necessary to improve the dust removal efficiency, the lead screw can be rotated to make the cross-sectional area between the left and right clamping plates smaller. At this time, when the mixed gas flows through here, the speed will be further increased. At the same time, the lead screw 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 inside the gear ring is connected to the outer hole inside the inner ring body, the outer hole will also correspondingly spray and dust-remove, which is convenient for improving the spraying and dust-removing effect while increasing the flow rate of the smoke and dust mixed gas, and further improving the dust removal effect and efficiency.

[0031] 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.

[0032] 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

[0033] Figure 1 This is a schematic diagram of the cross-sectional structure of the dust suppression pipe of the present invention;

[0034] Figure 2 This is a schematic diagram of the dust suppression pipe structure of the present invention;

[0035] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 4 This is a schematic diagram of the installation structure of the outer membrane body of the present invention;

[0037] 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;

[0038] Figure 6 This is a schematic diagram of reducing the inner diameters of the left and right splints of the present invention;

[0039] Figure 7 For the present invention Figure 3 Schematic diagram of the enlarged structure at position A in the present invention;

[0040] Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged structure at position B in the present invention;

[0041] Figure 9 Schematic diagram of the sectional structure of the fixing block of the present invention;

[0042] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure at position C in the present invention;

[0043] Figure 11 Schematic diagram of the ring gear structure of the present invention;

[0044] Figure 12 Schematic diagram of the sectional structure of the ring gear and the inner ring body of the present invention.

[0045] In the figure: 1, tunneling machine body; 2, dust reduction pipe; 3, gas delivery pipe; 4, discharge pipe; 5, collection box; 6, baffle; 7, drain port; 8, air outlet pipe; 9, exhaust passage; 10, guide block; 11, auxiliary block; 12, fixing rod; 13, connecting sleeve; 14, lead screw; 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, chute 1; 30, rotating ring; 31, chute 2; 32, ring gear; 33, communicating pipe; 34, groove; 35, inner ring body; 36, nozzle; 37, inner hole; 38, outer hole. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] Please refer to Figure 1-12 , the present invention provides a technical solution: a hard rock coal mine tunneling machine with a dust reduction structure, including a tunneling machine body 1, a water inlet pipe 28, and a dust reduction pipe 2 installed on one side of the fixed top of the tunneling machine body 1. A collection box 5 is fixedly installed on one side of the tunneling machine body 1. One side of the bottom of the dust reduction pipe 2 is connected to a gas delivery pipe 3, and the bottom end of the gas delivery pipe 3 is installed on the tunneling machine body 1;

[0048] One side of the dust - settling pipe 2 close to the collection box 5 is fixedly connected by a flange to a discharge pipe 4. One end of the discharge pipe 4 far from the dust - settling pipe 2 is communicated with the collection box 5. A baffle 6 is fixedly connected to the middle of the inner bottom surface of the collection box 5. A drain port 7 is installed on one side of the front of the collection box 5;

[0049] The 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 communicated with the gas delivery pipe 3, and the other end of the air outlet pipe 8 is communicated with the inside of the dust - settling pipe 2. An exhaust passage 9 is provided inside the air outlet pipe 8;

[0050] The guide block 10 is fixedly connected to the inner side of the dust - settling pipe 2. The guide block 10 is located on the side of the air outlet pipe 8 far from the gas delivery pipe 3. An inverted - conical through - hole is provided inside the guide block 10;

[0051] The adjusting assembly is arranged on the side of the inside of the dust - settling pipe 2 far from the air outlet pipe 8. The adjusting assembly includes symmetrically arranged fixing rods 12. The fixing rods 12 are fixedly connected to the top of the dust - settling pipe 2. The inner sides of the tops of the two fixing rods 12 are fixedly connected with a connecting sleeve 13. A lead screw 14 is rotatably connected inside the connecting sleeve 13. A threaded sleeve 15 is sleeved on the outer side of the lead screw 14. A vertical groove 16 is provided in the middle of the top of the dust - settling 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;

[0052] Auxiliary blocks 11 are symmetrically fixed to the inner side of the dust - settling pipe 2. The auxiliary blocks 11 are located at both ends of the outer membrane body 20. The lead screw 14 is in threaded connection with the threaded sleeve 15. The threaded sleeve 15 is slidably connected with the vertical groove 16. Limiting strips are symmetrically fixed to the outer side of the threaded sleeve 15. The inner - ring diameter of the left clamping plate 18 is smaller than that of the right clamping plate 19. Both the left clamping plate 18 and the right clamping plate 19 are located inside the outer membrane body 20.

[0053] The outer membrane body 20 is sleeved on the outer sides of the inner rings of the left clamping plate 18 and the right clamping plate 19. Both ends of the outer membrane body 20 are fixedly connected with the dust - settling pipe 2. A step groove 21 is provided on the inner bottom surface of the right clamping plate 19. A step block 22 is connected to the bottom of the left clamping plate 18. The step block 22 is slidably connected with the step groove 21. A driving wheel 23 is fixedly connected to the upper outer side of the lead screw 14. A rotating shaft 24 is rotatably connected to one side of the top of the dust - settling pipe 2. A driven wheel 25 is fixedly connected to the upper outer side of the rotating shaft 24. The driving wheel 23 and the driven wheel 25 are adaptively connected by a belt.

[0054] The bottom end of the rotating shaft 24 passes through the dust-removing pipe 2 and is fixedly connected with a bevel gear 26. One side inside the dust-removing pipe 2 is fixedly connected with a fixed block 27. The fixed block 27 is located on the side of the outer membrane body 20 away from the guiding block 10. Inside the fixed block 27, a rotating ring 30 is rotatably connected. One side of the rotating ring 30 is connected with a communicating pipe 33. The side of the communicating pipe 33 away from the rotating ring 30 is fixedly connected with a toothed ring 32. The toothed ring 32 is meshed and connected with the bevel gear 26. One side inside the fixed block 27 is provided with an inner ring body 35. The inner side of the inner ring body 35 is fixedly installed with nozzles 36 in an array. The outer ring of the inner ring body 35 is in fit with the inner ring of the toothed ring 32. The inner ring body 35 is fixedly connected with the fixed block 27. The inner ring of the toothed ring 32 is provided with an inner hole 37, and the inner ring of the inner ring body 35 is provided with an outer hole 38.

[0055] When the inner hole 37 rotates, it is intermittently communicated with the inside of the inner ring body 35. The nozzles 36 are communicated with the inside of the toothed ring 32. The aperture of the inner hole 37 is the same as that 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.

[0056] The top end of the water inlet pipe 28 is communicated with the rotating ring 30. The inside of the rotating ring 30 is communicated with the communicating pipe 33. The inside of the communicating pipe 33 is communicated with the toothed ring 32. The inner side of the inner ring body 35 is fixedly connected with the nozzles 36. The nozzles 36 are fixedly connected with the inner side of the fixed block 27. The toothed ring 32 is in close fit with the inner ring body 35.

[0057] A first chute 29 is formed inside the fixed block 27. The first chute 29 corresponds to the position of the rotating ring 30. The rotating ring 30 is rotatably connected with the first chute 29. The communicating pipe 33 is rotatably connected with the first chute 29.

[0058] A second chute 31 is formed inside the fixed block 27. The second chute 31 corresponds to the position of the toothed ring 32. The toothed ring 32 is rotatably connected with the second chute 31. A groove 34 is formed on one side of the top of the fixed block 27. The groove 34 is located at the position of the rotating shaft 24. The bevel gear 26 is located inside the groove 34.

[0059] Step grooves 21 are evenly formed on the right clamping plate 19. There are no less than three step grooves 21. The top end of the step block 22 is fixedly connected with the left clamping plate 18. The number of step blocks 22 matches that of the step grooves 21.

[0060] Example 1: As Figure 1-12As shown in the figure, an adjustment component is provided. When the device is in use, the tunneling body 1 is started to move 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 soot to be 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, after the gas is input to the inner side of the outer membrane body 20, the flow rate will increase. Then, the gas and soot 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, then flows into the gear ring 32 through the connecting pipe 33, and finally sprays out from the nozzle 36. The mixed gas is dust-removed through the nozzle 36 and then flows into the collection box 5 for collection.

[0061] When it is necessary to improve the dust reduction efficiency, the lead screw 14 can be rotated. When the lead screw 14 rotates, the threaded sleeve 15 drives the bottom plate 17 to move downward. The bottom plate 17 presses down on 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. As a result, the inner diameter between the left clamping plate 18 and the right clamping plate 19 becomes smaller. The outer membrane body 20 is sleeved on the inner sides 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.

[0062] At this time, after the mixed gas flows through here, the speed will further increase. At the same time, the lead screw 14 drives the driving wheel 23 to rotate. 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. The bevel gear 26 drives the gear ring 32 to rotate. The gear ring 32 drives the connecting pipe 33 and the rotating ring 30 to rotate by a certain angle. The water inlet pipe 28 is a telescopic hose for adapting to the small-angle rotation of the rotating ring 30. The inner ring body 35 remains stationary.

[0063] When the inner hole 37 inside the gear ring 32 is connected to the outer hole 38 inside the inner ring body 35, the outer hole 38 will also perform corresponding spray dust reduction, which is convenient for improving the spray dust reduction effect while increasing the flow rate of the soot mixed gas, further improving the dust reduction effect and efficiency, and solving the problem that the drive of the dust removal device is associated with the rotation of the drill bit. When tunneling operation is not required and only dust removal is needed, the drill bit will rotate idly, resulting in high energy consumption and affecting the dust removal efficiency.

[0064] The exhaust passage 9 includes a first conical groove and a second conical groove. The first conical groove is connected to the second conical groove through a hole groove. The first conical groove is connected to the gas delivery pipe 3, and the second conical groove is connected to the dust reduction pipe 2. The diameter of the hole groove is smaller than both the circular surface diameter of the first conical groove and the circular surface diameter of the second conical groove.

[0065] Embodiment 2: As Figure 1-3As shown in the figure, during dust removal, high-pressure gas is input through the gas delivery pipe 3. The high-pressure gas flows into the air outlet pipe 8 through the gas delivery pipe 3 and then into the guide block 10 through the air outlet pipe 8. At this time, due to the blocking and guiding of the exhaust passage 9 and the guiding of the guide block 10, the front end inside the dust removal pipe 2 is in a negative pressure state, thereby adsorbing soot and the like into the inside of the dust removal pipe 2 and cooperating with the subsequent adjustment assembly for dust removal, making the dust removal effect of the device better. Moreover, the dust removal device uses high-pressure gas as power, has no impeller, no movable parts, does not use electricity, and does not generate sparks, and is safe and reliable to use in an environment with explosive gas.

[0066] Working principle: When using this device, first, as Figure 1-12 shown in the figure, when the device is in use, start the tunneling machine body 1 to move to the dust suction position, input high-pressure gas through the gas delivery pipe 3, and input pressurized water through the water inlet pipe 28. The high-pressure gas enters the dust removal pipe 2. The high-pressure gas flows into the air outlet pipe 8 through the gas delivery pipe 3 and then into the guide block 10 through the air outlet pipe 8. At this time, due to the blocking and guiding of the exhaust passage 9 and the guiding of the guide block 10, the front end inside the dust removal pipe 2 is in a negative pressure state, thereby adsorbing soot and the like into the inside of the dust removal pipe 2 and cooperating with the subsequent adjustment assembly for dust removal, making the dust removal effect of the device better.

[0067] Then the soot is attracted and transported to the position of the auxiliary block 11. Since the inner diameter of the dust removal pipe 2 is larger than the inner diameter of the outer membrane body 20, the flow rate of the gas will increase after it is input to the inside of the outer membrane body 20. Then the gas and soot continue to be input to the inside of the fixed block 27. The water inside the water inlet pipe 28 flows into the communicating pipe 33 through the rotating ring 30, then into the gear ring 32 through the communicating pipe 33, and finally sprays out from the nozzle 36. The mixed gas is dusted through the nozzle 36 and flows into the collection box 5 for collection.

[0068] When it is necessary to improve the dust removal efficiency, the lead screw 14 can be rotated. The rotation of the lead screw 14 causes the threaded sleeve 15 to drive the bottom plate 17 to move downward. The bottom plate 17 presses down on the left clamping plate 18 and the right clamping plate 19 on both sides, causing the step block 22 at the bottom of the left clamping plate 18 to slide 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 inside the left clamping plate 18 and the right clamping plate 19 and has a certain ductility, making the cross-sectional area between the left clamping plate 18 and the right clamping plate 19 smaller.

[0069] At this time, after the mixed gas flows through here, its speed will further increase. At the same time, the lead screw 14 drives the driving wheel 23 to rotate. The driving wheel 23 drives the driven wheel 25 and the rotating shaft 24 to rotate through a belt. The rotating shaft 24 drives the bevel gear 26 to rotate. The bevel gear 26 drives the toothed ring 32 to rotate. The toothed ring 32 drives the communicating pipe 33 and the rotating ring 30 to rotate by a certain angle. The water inlet pipe 28 is a telescopic hose for adapting to the small-angle rotation of the rotating ring 30. The inner ring body 35 remains stationary. When the inner hole 37 inside the toothed ring 32 is communicated with the outer hole 38 inside the inner ring body 35, the outer hole 38 will also correspond to spray dust suppression, which is convenient for improving the spray dust suppression effect while increasing the flow rate of the smoke and dust mixed gas, and further improving the dust suppression effect and efficiency.

[0070] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0071] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within 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 on the inner side of 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 with 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 inner ring body (35) 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 intermittently connected to the interior of the inner ring body (35) when rotating, the nozzle (36) is connected to the interior of the gear ring (32), and the aperture of the inner hole (37) is the same as the aperture 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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