Auxiliary dust removal device of tunnel boring machine
By designing a tunnel boring machine auxiliary dust removal device including a vacuum cleaner frame, a blocking mechanism and a dust removal box, the problems of dust spillage and diffusion during the work of the boring machine are solved, and a more efficient dust removal effect and a better working environment are achieved.
Patent Information
- Application Number
- CN202422207269.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-10
AI Technical Summary
During the work, the excavator will overflow and spread due to dust, resulting in a decrease in air quality and poor visibility, which will affect the health and safety of employees. The existing dry dust removal equipment is not effective and cannot effectively solve the problem of dust diffusion.
A tunnel boring machine auxiliary dust removal device is designed, including a vacuum cleaner frame, a blocking mechanism, a connecting pipe, a universal connection device, a dust removal box and a pull-out fan. The device generates negative pressure through a pumping fan, sucks in dust and air, and purifies and intercepts through a dust removal mechanism and a blocking mechanism to avoid dust spillage.
It effectively avoids dust spillage and diffusion during the work of the boring machine, improves the air quality and environmental protection of the working environment, and enhances the dust removal effect.
Smart Images
Figure CN222949912U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coal mining, in particular to an auxiliary dust removal device for a tunnel boring machine. Background Art
[0002] In recent years, with the popularization of mechanized equipment for coal tunnels and rock tunnels in underground coal mines, tunneling efficiency has been greatly improved, especially the increase in the speed of working face tunneling, the long continuous working time of equipment, and the greatly improved work efficiency. However, while the tunnel boring machine is working, the dust concentration in the tunnel increases, which reduces the air quality and visibility, causing great troubles to the physical and mental health and safe operation of employees. Although equipped with dry dust removal equipment, it is affected by the changes in the cutting area of the tunneling work part during tunnel excavation, the changes in the geological conditions of the tunnel, the extension of the dust removal equipment and the balance of wind pressure. A large amount of dust overflows and spreads seriously during the operation of the tunnel boring machine, and the actual dust reduction effect of the dust in the front and back tunnels of the working face is not good. Utility Model Content
[0003] In order to make up for the above shortcomings, the utility model provides an auxiliary dust removal device for a tunnel boring machine to solve the problem of how to avoid a large amount of dust overflow and diffusion during the operation of the tunnel boring machine, as mentioned in the above background technology.
[0004] The technical solution of the utility model is:
[0005] An auxiliary dust removal device for a tunnel boring machine comprises a tunnel boring machine body, on which a tunnel boring machine cutting part and a tunnel boring rotating part are provided, on which a dust suction frame is installed, a head end of the dust suction frame is provided with a blocking mechanism for intercepting and blocking dust, a tail end of the dust suction frame is provided with a connecting pipe, the tail end of the connecting pipe is connected to a universal connecting device connected thereto, the tail end of the universal connecting device is connected to a dust removal box connected thereto, a dust removal mechanism is provided in the dust removal box, the tail end of the dust removal box is provided with an exhaust fan connected thereto, and the bottom of the dust removal box is fixedly connected to the tunnel boring machine body.
[0006] Preferably, the blocking mechanism includes a wind jet duct, on which are provided a plurality of sub-jet dust blocking nozzles and two ventilation pipes, the two ventilation pipes are provided with air inlet pipes, one end of the air inlet pipes is provided with a first pipe joint, the wind jet duct is arranged on the inner wall of the dust collection frame, and the sub-jet dust blocking nozzles penetrate the dust collection frame, and one end of the air inlet pipe penetrates the connecting pipe.
[0007] Preferably, the universal connection device includes a first air joint, a first air joint semi-ring pad, a middle joint, a second air joint semi-ring pad and a second air joint, the first air joint semi-ring pad and the second air joint semi-ring pad are respectively movably connected to the two ends of the middle joint, one end of the first air joint is fixedly connected to the connecting pipe, the other end of the first air joint is connected to the first air joint semi-ring pad, one end of the second air joint is connected to the second air joint semi-ring pad, and the other end of the second air joint is connected to the dust removal box.
[0008] Preferably, the dust removal mechanism includes an upper cavity ventilation rectangular frame, a middle through pipe, a dust accumulation rubber plate and a dust discharge groove, the upper cavity ventilation rectangular frame is provided with a plurality of, all of the upper cavity ventilation rectangular frames are arranged in the dust removal box at equal intervals along the length direction of the dust removal box, a plurality of dust removal units arranged at equal intervals are arranged between two adjacent upper cavity ventilation rectangular frames, the dust removal unit is connected to the upper cavity ventilation rectangular frame facing the head end of the dust removal box, and the tops of all the upper cavity ventilation rectangular frames are provided with a plurality of equally spaced dust removal units along the width direction of the dust removal box. The dust removal unit is located between two adjacent partition plates, the central through pipe runs through the middle of all the upper cavity ventilation rectangular frames, and the central through pipe is connected with all the upper cavity ventilation rectangular frames, the two ends of the central through pipe are respectively connected with the second air joint and the exhaust fan, the dust collecting rubber plate is obliquely arranged on the inner bottom wall of the dust removal box, and the end of the dust removal box away from the universal connection device is provided with a dust outlet connected with the dust collecting rubber plate, the dust exhaust groove is arranged at the rear end of the dust removal box, and the dust exhaust groove is connected with the dust outlet.
[0009] Preferably, the dust removal unit includes a conical dust removal pipe, a dust exhaust port is provided at the bottom of the dust removal pipe, a fixed cover is provided at the top of the dust removal pipe, a detachable spiral duct is provided in the middle of the fixed cover, a filter is provided in the spiral duct, and an air inlet connected to the upper cavity ventilation rectangular frame is provided on the top outer wall of the dust removal pipe.
[0010] Preferably, there are a plurality of filter screens, and all the filter screens are arranged in the spiral conduit at equal intervals along the height direction of the spiral conduit.
[0011] Preferably, a dust exhaust jet pipe is installed at the front end of the inner bottom wall of the dust removal box, a plurality of dust exhaust jet nozzles are provided on the dust exhaust jet pipe, and a second pipe joint is provided at one end of the dust exhaust jet pipe.
[0012] Preferably, two upper sealing cover plates and two protective cover plates are installed on the top of the dust removal box.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] Firstly, the utility model generates negative pressure through the operation of the exhaust fan, so that the air carrying dust can enter the dust removal box, and then the dust carrying air can be purified by the dust removal mechanism, and the flying dust can be blocked by the blocking mechanism, thereby avoiding the overflow and diffusion of dust during the operation of the tunnel boring machine, thereby improving environmental protection.
[0015] Secondly, the utility model can introduce dust-laden air into the dust removal unit through the central through tube and the upper cavity ventilation rectangular frame, and then make the dust-laden air produce a swirl through the spiral duct, so that large dust particles sink to the dust exhaust port, and the large dust particles can fall out of the dust exhaust port onto the dust accumulation rubber plate, and the dust on the dust accumulation rubber plate can be automatically discharged, which improves convenience. Small dust particles can also be filtered out through the filter net, which improves the quality of purified air. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the auxiliary dust removal device of the tunnel boring machine of the utility model;
[0017] Figure 2 It is a partial explosion schematic diagram of the auxiliary dust removal device of the tunnel boring machine of the utility model;
[0018] Figure 3 The figure is a schematic diagram of the decomposition of the dust removal unit;
[0019] Figure 4 is a partial cross-sectional view of a dust removal unit;
[0020] Figure 5 Schematic diagram of the internal structure of the dust removal box.
[0021] In the figure:
[0022] 1. Tunneling machine body; 11. Tunneling machine cutting part; 12. Tunneling rotating part; 2. Dust suction frame; 3. Blocking mechanism; 31. Wind jet duct; 32. Split jet dust blocking nozzle; 33. Ventilation pipe; 34. Inlet pipe; 35. First pipe joint; 4. Connecting pipe; 5. Universal connection device; 51. First wind joint; 52. First wind joint semi-ring gasket; 53. Middle joint; 54. Second wind joint semi-ring gasket; 55. Second wind joint; 6. Dust removal box; 61. Dust outlet 62. Dust exhaust jet pipe; 63. Dust exhaust jet nozzle; 64. Second pipe joint; 65. Upper sealing cover plate; 66. Protective cover plate; 7. Dust removal mechanism; 71. Upper cavity ventilation rectangular frame; 72. Partition plate; 73. Middle through pipe; 74. Dust accumulation rubber plate; 75. Dust exhaust slot; 76. Dust removal unit; 761. Dust removal pipe; 762. Dust exhaust port; 763. Fixed cover; 764. Spiral duct; 765. Filter; 766. Air inlet; 8. Exhaust fan. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-5 The utility model describes the above technical solution in detail through the following embodiments:
[0025] An auxiliary dust removal device for a tunnel boring machine comprises a tunnel boring machine body 1, on which a tunnel boring machine cutting part 11 and a tunnel boring rotating part 12 are provided, on which a dust suction frame 2 is installed, at the head end of the dust suction frame 2 a blocking mechanism 3 for intercepting and blocking dust is provided, at the tail end of the dust suction frame 2 a connecting pipe 4 is provided, at the tail end of the connecting pipe 4 a universal connecting device 5 connected thereto is connected, at the tail end of the universal connecting device 5 a dust removal box 6 connected thereto is connected, in which a dust removal mechanism 7 is provided, at the tail end of the dust removal box 6 a suction fan 8 connected thereto is provided, and at the bottom of the dust removal box 6 is fixedly connected to the tunnel boring machine body 1.
[0026] When the tunnel boring machine is working, the exhaust fan 8 can suck the dust-laden air generated by tunneling into the dust suction frame 2, and then pass it into the dust removal box 6 through the connecting pipe 4 and the universal connecting device 5. Then the dust removal mechanism 7 performs dust reduction operation on the dust-laden air. The purified air can be discharged from the exhaust fan 8, and the dust can be intercepted and blocked by the blocking mechanism 3, thereby avoiding the overflow and diffusion of dust.
[0027] The blocking mechanism 3 includes a wind jet duct 31, on which are provided a plurality of branch jet dust blocking nozzles 32 and two ventilation pipes 33, on which are provided an air intake pipe 34, at one end of which is provided a first pipe joint 35, the wind jet duct 31 is arranged on the inner wall of the dust collection frame 2, and the branch jet dust blocking nozzles 32 penetrate the dust collection frame 2, and at one end of which is provided a connecting pipe 4.
[0028] The first pipe joint 35 and the pipe can be connected to an air pump, and the air pump generates high-pressure gas and delivers it to the air inlet pipe 34. The air inlet pipe 34 delivers the high-pressure gas to two ventilation pipes 33, and then the ventilation pipes 33 are connected to the wind jet pipe 31, and then sprayed out from all the sub-jet dust blocking nozzles 32, thus forming an air curtain to block dust.
[0029] Furthermore, the first pipe joint 35 and the pipe can also be connected to a water pump, which can pump water from the water source and finally spray it out from all the sub-jet dust blocking nozzles 32. This method can also intercept and block dust.
[0030] The universal connecting device 5 includes a first air joint 51, a first air joint semi-ring pad 52, a middle joint 53, a second air joint semi-ring pad 54 and a second air joint 55. The first air joint semi-ring pad 52 and the second air joint semi-ring pad 54 are movably connected to the two ends of the middle joint 53 respectively, one end of the first air joint 51 is fixedly connected to the connecting pipe 4, the other end of the first air joint 51 is connected to the first air joint semi-ring pad 52, one end of the second air joint 55 is connected to the second air joint semi-ring pad 54, and the other end of the second air joint 55 is connected to the dust removal box 6.
[0031] The mutual cooperation among the first air joint 51, the first air joint semi-ring gasket 52, the middle joint 53, the second air joint semi-ring gasket 54 and the second air joint 55 can allow the dust collection frame 2 and the connecting pipe 4 to turn freely and synchronously.
[0032] The dust removal mechanism 7 includes an upper cavity ventilation rectangular frame 71, a middle through pipe 73, a dust collecting rubber plate 74 and a dust discharge groove 75. The upper cavity ventilation rectangular frames 71 are provided with a plurality of them. All the upper cavity ventilation rectangular frames 71 are arranged in the dust removal box 6 at equal intervals along the length direction of the dust removal box 6. A plurality of dust removal units 76 arranged at equal intervals are arranged between two adjacent upper cavity ventilation rectangular frames 71. The dust removal unit 76 is connected to the upper cavity ventilation rectangular frame 71 facing the head end of the dust removal box 6. The tops of all the upper cavity ventilation rectangular frames 71 are provided with a plurality of partition plates 7 at equal intervals along the width direction of the dust removal box 6. 2. The dust removal unit 76 is located between two adjacent partition plates 72. The central through pipe 73 runs through the middle of all the upper cavity ventilation rectangular frames 71, and the central through pipe 73 is connected with all the upper cavity ventilation rectangular frames 71. The two ends of the central through pipe 73 are respectively connected with the second air joint 55 and the exhaust fan 8. The dust collecting rubber plate 74 is obliquely arranged on the inner bottom wall of the dust removal box 6. The end of the dust removal box 6 away from the universal connection device 5 is provided with a dust outlet 61 connected with the dust collecting rubber plate 74. The dust exhaust groove 75 is arranged at the rear end of the dust removal box 6, and the dust exhaust groove 75 is connected with the dust outlet 61.
[0033] The exhaust fan 8 can draw the dust-carrying air from the outside into the dust removal box 6, and then the dust-carrying air can enter the middle tube 73, and then enter all the upper cavity ventilation rectangular frames 71, and then the dust-carrying air is purified by all the dust removal units 76. The purified air can be discharged from the exhaust fan 8, and the large particles of dust removed by the dust removal unit 76 can fall onto the dust collecting rubber plate 74, and then the dust can be automatically discharged from the dust exhaust trough 75.
[0034] The dust removal unit 76 includes a conical dust removal pipe 761, a dust exhaust port 762 is provided at the bottom of the dust removal pipe 761, a fixed cover 763 is provided at the top of the dust removal pipe 761, a detachable spiral duct 764 is provided in the middle of the fixed cover 763, a filter screen 765 is provided in the spiral duct 764, and an air inlet 766 connected to the upper cavity ventilation rectangular frame 71 is provided on the top outer wall of the dust removal pipe 761.
[0035] The dust-laden air enters from the air inlet 766 , and then passes through the spiral duct 764 to create a swirl in the dust-laden air, so that large dust particles can sink to the dust exhaust port 762 , and small dust particles can also be filtered out through the filter net 765 , and the purified air can be discharged from the top of the spiral duct 764 .
[0036] There are a plurality of filter screens 765 , and all the filter screens 765 are arranged in the spiral duct 764 at equal intervals along the height direction of the spiral duct 764 , thereby improving the filtering effect on small particles of dust.
[0037] A dust exhaust jet pipe 62 is installed at the front end of the inner bottom wall of the dust removal box 6. A plurality of dust exhaust jet nozzles 63 are arranged on the dust exhaust jet pipe 62. A second pipe joint 64 is arranged at one end of the dust exhaust jet pipe 62. The second pipe joint 64 is connected to the air pump. The air pump then delivers high-pressure gas to the dust removal box 6, and then sprays it out from all the dust exhaust jet nozzles 63. The dust on the dust accumulation rubber plate 74 is blown away, and then the dust is discharged from the dust outlet 61, thereby improving the centralized automatic discharge efficiency and discharge quality of the dust accumulation rubber plate 74.
[0038] Two upper sealing cover plates 65 and two protective cover plates 66 are installed on the top of the dust removal box 6. The upper sealing cover plates 65 increase the sealing effect of the dust removal box 6, and the protective cover plates 66 increase the anti-smashing and anti-collision capabilities.
[0039] Working principle: The exhaust fan 8 forms a negative pressure when it works, and the air carrying dust from the outside enters from the dust suction frame 2, and then enters the universal connection device 5 through the connecting pipe 4, and then the air carrying dust enters the middle pipe 73, and then the air carrying dust goes to all the upper cavity ventilation rectangular frames 71 respectively, and the dust-carrying air enters through the air inlet 766, and then the air is purified by the dust removal unit 76, and then the dust-carrying air is allowed to produce a swirl through the spiral duct 764, so that large particles of dust can sink to the dust exhaust port 762, and small particles of dust can also be filtered out through the filter net 765, and the purified air can be discharged from the top of the spiral duct 764, and then the purified air flows from between two adjacent partition plates 72 to the exhaust fan 8, and the purified air is finally discharged from the exhaust fan 8.
Claims
1. An auxiliary dust removal device for a tunnel boring machine, comprising a tunnel boring machine body (1), wherein the tunnel boring machine body (1) is provided with a tunnel boring machine cutting part (11) and a tunnel boring rotating part (12), characterized in that: A dust collection frame (2) is installed on the excavation rotating part (12), and a blocking mechanism (3) for intercepting and blocking dust is provided at the head end of the dust collection frame (2), and a connecting pipe (4) is provided at the tail end of the dust collection frame (2), and a universal connecting device (5) connected to the tail end of the connecting pipe (4), and a dust removal box (6) connected to the tail end of the universal connecting device (5), and a dust removal mechanism (7) is provided in the dust removal box (6), and an exhaust fan (8) connected to the tail end of the dust removal box (6), and the bottom of the dust removal box (6) is fixedly connected to the excavation machine body (1).
2. The auxiliary dust removal device for a tunnel boring machine according to claim 1, characterized in that: The blocking mechanism (3) comprises an air jet duct (31), on which are provided a plurality of branch jet dust blocking nozzles (32) and two ventilation pipes (33), on which are provided an air intake pipe (34), one end of which is provided with a first pipe joint (35), the air jet duct (31) being arranged on the inner wall of the dust collection frame (2), and the branch jet dust blocking nozzles (32) penetrating the dust collection frame (2), and one end of which is provided with a connecting pipe (4).
3. The auxiliary dust removal device for a tunnel boring machine according to claim 1, characterized in that: The universal connection device (5) comprises a first air joint (51), a first air joint semi-annular pad (52), a middle joint (53), a second air joint semi-annular pad (54) and a second air joint (55); the first air joint semi-annular pad (52) and the second air joint semi-annular pad (54) are respectively movably connected to the two ends of the middle joint (53); one end of the first air joint (51) is fixedly connected to the connecting pipe (4); the other end of the first air joint (51) is connected to the first air joint semi-annular pad (52); one end of the second air joint (55) is connected to the second air joint semi-annular pad (54); and the other end of the second air joint (55) is connected to the dust removal box (6).
4. The auxiliary dust removal device for a tunnel boring machine according to claim 1, characterized in that: The dust removal mechanism (7) comprises an upper cavity ventilation rectangular frame (71), a middle through pipe (73), a dust collecting rubber plate (74) and a dust discharge groove (75); a plurality of upper cavity ventilation rectangular frames (71) are provided, and all of the upper cavity ventilation rectangular frames (71) are arranged in the dust removal box (6) at equal intervals along the length direction of the dust removal box (6); a plurality of dust removal units (76) arranged at equal intervals are arranged between two adjacent upper cavity ventilation rectangular frames (71); the dust removal units (76) are connected to the upper cavity ventilation rectangular frame (71) facing the head end of the dust removal box (6); a plurality of partition plates (72) are arranged at equal intervals along the width direction of the dust removal box (6) at the top of all of the upper cavity ventilation rectangular frames (71); The dust removal unit (76) is located between two adjacent partition plates (72); the central through pipe (73) passes through the middle of all upper cavity ventilation rectangular frames (71), and the central through pipe (73) is connected to all upper cavity ventilation rectangular frames (71); the two ends of the central through pipe (73) are respectively connected to the second air joint (55) and the exhaust fan (8); the dust collecting rubber plate (74) is arranged obliquely on the inner bottom wall of the dust removal box (6); the end of the dust removal box (6) away from the universal connection device (5) is provided with a dust outlet (61) connected to the dust collecting rubber plate (74); the dust exhaust groove (75) is arranged at the rear end of the dust removal box (6), and the dust exhaust groove (75) is connected to the dust outlet (61).
5. The auxiliary dust removal device for a tunnel boring machine according to claim 4, characterized in that: The dust removal unit (76) comprises a conical dust removal pipe (761), the bottom of the dust removal pipe (761) is provided with a dust discharge port (762), the top of the dust removal pipe (761) is provided with a fixed cover (763), the middle of the fixed cover (763) is provided with a detachable spiral guide tube (764), a filter screen (765) is provided in the spiral guide tube (764), and an air inlet (766) connected to the upper cavity ventilation rectangular frame (71) is provided on the top outer wall of the dust removal pipe (761).
6. The auxiliary dust removal device for a tunnel boring machine according to claim 5, characterized in that: A plurality of filter screens (765) are provided, and all the filter screens (765) are arranged in the spiral conduit (764) at equal intervals along the height direction of the spiral conduit (764).
7. The auxiliary dust removal device for a tunnel boring machine according to claim 6, characterized in that: A dust exhaust jet pipe (62) is installed at the front end of the inner bottom wall of the dust removal box (6), a plurality of dust exhaust jet nozzles (63) are provided on the dust exhaust jet pipe (62), and a second pipe joint (64) is provided at one end of the dust exhaust jet pipe (62).
8. The auxiliary dust removal device for a tunnel boring machine according to claim 7, characterized in that: Two upper sealing cover plates (65) and two protective cover plates (66) are installed on the top of the dust removal box (6).