A TBM tunnel mobile dust removal device

Abstract

A TBM tunnel mobile dust removal device relates to the technical field of TBM engineering, and includes a dust removal fan, a ventilation pipe, a dry dust removal device, and a wet dust removal device. The air outlet A of the dust removal fan is connected to the air inlet B of the ventilation pipe. The air outlet B of the ventilation pipe is connected to the dry dust removal device. The dry dust removal device is connected to the wet dust removal device through an inverted "V"-shaped pipe. The bottoms of the dry dust removal device and the wet dust removal device are connected as an integral structure, and universal wheels are provided at the bottom of the integral structure. The present invention provides a TBM tunnel mobile dust removal device that is convenient to move, has a good dust removal effect, and has an air purification function.

Description

Technical Field

[0001] The present invention relates to the technical field of TBM engineering, and particularly relates to a mobile dust removal device for TBM tunnels. Background Art

[0002] During the process of TBM tunnel construction, a large amount of dust is generated. Due to the narrow and relatively enclosed space of the tunnel, it is difficult for the dust to be quickly discharged, resulting in a large environmental pollution in the tunnel and endangering the health of the staff.

[0003] Most of the existing dust removal equipment uses a fan to extract dust. The fan is generally fixed to the tunnel wall by hanging. Since it cannot move, it cannot perform targeted dust removal at specific locations. In addition, the fan dust removal only causes the dust to displace from the working location to other places, and does not play a real role in air purification, which is not conducive to environmental protection. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a mobile dust removal device for TBM tunnels that is convenient to move, has a good dust removal effect, and has an air purification function.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A mobile dust removal device for TBM tunnels includes a dust removal fan, a ventilation pipe, a dry dust removal device, and a wet dust removal device. The air outlet A of the dust removal fan is connected to the air inlet B of the ventilation pipe. The air outlet B of the ventilation pipe is connected to the dry dust removal device. The dry dust removal device is connected to the wet dust removal device through an inverted "V" - shaped pipe. The bottoms of the dry dust removal device and the wet dust removal device are connected as an integral structure, and universal wheels are provided at the bottom of the integral structure.

[0007] Preferably, a dry dust collection box is provided at the bottom of the dry dust removal device. A cylindrical first housing is connected to the top end of the dry dust collection box through a funnel-shaped first connecting pipe. A first roller is provided inside the first housing. The first roller is coaxial with the first housing, and the first roller is rotatably connected to the first housing through a first central shaft. An air inlet C is provided on the outer wall of the left side of the first roller. The ventilation pipe is connected to the air inlet C. An air outlet C is further provided on the outer wall of the first housing opposite to the air inlet C. The air outlet C is connected to the air inlet D of the "V"-shaped pipe. A dry dust discharge port is provided at the bottom of the first housing. The dry dust discharge port is fixedly connected to the upper end of the first connecting pipe. A first brush is further provided on the inner wall of the first housing between the air inlet C and the air outlet C. A second brush is provided on the inner wall of the first housing between the air outlet C and the dry dust discharge port. Both ends of the first brush and the second brush are attached to the inner surfaces of both ends of the first housing. A plurality of inverted frustum-shaped first grooves are evenly distributed on the outer surface of the side wall of the first roller. The outer surface of the side wall of the second roller contacts the ends of the first brush and the second brush.

[0008] Preferably, the end of the first central shaft extends outside the first housing. A first reduction motor is further fixedly connected outside the first housing. The output shaft of the first reduction motor is fixedly connected to the end of the first central shaft.

[0009] Preferably, a first filter screen for filtering coarse particles is provided at the air inlet A of the dust removal fan. A coarse particle discharge port is provided at the bottom of the side wall of the air inlet A where the outer side of the first filter screen is located. The bottom of the coarse particle discharge port is connected to a coarse particle discharge pipe. The lower end of the coarse particle discharge pipe is connected to the dry dust collection box.

[0010] Preferably, a wet dust collection box is provided at the bottom of the wet dust removal device. The top end of the wet dust collection box is connected to a cylindrical second housing through a funnel-shaped second connecting pipe. An air inlet E is provided on one side of the second housing. The air outlet D of the "V"-shaped pipe is connected to the air inlet E. An air outlet E is further provided at the top end of the second housing. An air outlet pipe is provided at the air outlet E. A second filter screen is provided inside the air outlet pipe. An atomization device is connected between the wet dust collection box and the dry dust collection box. The atomization gas outlet of the atomization device is communicated with the second housing through a connecting pipe. A wet dust discharge port is provided at the lower end of the second housing. The wet dust discharge port is connected to the second connecting pipe.

[0011] Preferably, a second central shaft is further provided inside the second housing. The second central shaft is a hollow structure with one end closed. A plurality of atomization gas discharge holes are evenly distributed on the side wall of the hollow structure and inside the second housing. The upper end of the connecting pipe is connected to the open end of the second central shaft.

[0012] Preferably, the second central axis is coaxial with the second housing and rotatably connected to both ends of the second housing. A second roller is sleeved outside the second central axis. A plurality of second grooves with a trapezoidal cross-section are evenly distributed on the outer wall of the second roller. The area of the bottom of the second groove is smaller than the area of the notch, and the bottom of the groove is communicated with the atomized gas discharge hole. A third brush is further provided on the inner surface of the side wall of the second housing between the air outlet D and the air outlet E32. A fourth brush is provided on the inner surface of the side wall of the second housing between the air outlet E and the wet dust discharge port. The outer surface of the second roller is respectively in contact with the ends of the third brush and the fourth brush.

[0013] Preferably, the closed end of the second central axis extends outside the second housing, and a second reduction motor is fixedly connected outside the second housing. The output shaft of the second reduction motor is fixedly connected to the end of the second central axis.

[0014] Preferably, an exhaust fan is further provided on the connecting pipe.

[0015] Preferably, a handle is fixedly connected to the end of the wet dust collection box far from the dust removal fan.

[0016] The TBM tunnel mobile dust removal device of the present invention has the following beneficial effects: The present invention preliminarily filters the coarse particle dust through the first filter screen. The remaining air containing medium-sized dust particles is purified and filtered by the dry dust removal equipment, and the air containing fine dust particles is further filtered by the wet dust removal equipment. Finally, the air is discharged through the filtration of the second filter screen. In the whole process, a sufficient air purification and filtration effect can be achieved, which can effectively improve the working environment of TBM tunnel operations, and is safe, environmentally friendly, convenient to move, has strong flexibility in the use of the purification site, and is more targeted. Brief Description of the Drawings

[0017] Figure 1 : Side cross-sectional view of the present invention;

[0018] Figure 2 : Cross-sectional view of the cooperation relationship between the first roller and the first housing of the present invention;

[0019] Figure 3 : Cross-sectional view of the cooperation relationship between the second roller and the second housing of the present invention;

[0020] Figure 4 : Front view of the present invention;

[0021] Figure 5 : Rear view of the present invention;

[0022] 1: Dust removal fan, 101: Air inlet A, 102: Air outlet A, 2: Ventilation pipe, 3: First housing, 4: "V"-shaped pipe, 5: Second housing, 6: Handle, 7: Wet dust collection box, 8: Atomization device, 9: Dry dust collection box, 10: Exhaust fan, 11: Connecting pipe, 12: Second central shaft, 13: Air outlet pipe, 14: Connecting flange, 15: Second connecting pipe, 16: Second support column, 17: First central shaft, 18: First connecting pipe, 19: Universal wheel, 20: Coarse particle discharge pipe, 21: First support column, 22: Second reduction motor, 23: First reduction motor, 24: First roller, 25: First groove, 26: First brush, 27: Second brush, 28: Second roller, 29: Second groove, 30: Third brush, 31: Fourth brush, 32: Air outlet E, 33: Wet dust discharge port, 34: Dry dust discharge port, 35: First filter screen, 36: Atomized gas discharge hole. Detailed implementation manners

[0023] The following description details the embodiments of the present invention in a step-by-step progressive manner. This description is only for the preferred embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention.

[0025] Embodiment 1

[0026] A TBM tunnel mobile dust removal device, as Figure 4 shown, includes a dust removal fan 1, a ventilation pipe 2, a dry dust removal device, and a wet dust removal device. The air outlet A 102 of the dust removal fan 1 is connected to the air inlet B of the ventilation pipe 2. The air outlet B of the ventilation pipe 2 is connected to the dry dust removal device. The dry dust removal device is connected to the wet dust removal device through an inverted "V"-shaped pipe 4. The bottoms of the dry dust removal device and the wet dust removal device are connected as an integral structure. Universal wheels 19 are provided at the bottom of the integral structure;

[0027] As Figure 4As shown, a dry dust collecting box 9 is provided at the bottom of the dry dust collecting equipment, and a cylindrical first shell 3 is connected to the top of the dry dust collecting box 9 through a funnel-shaped first connecting pipe 18, and a first roller body 24 is provided in the first shell 3. The first roller body 24 is coaxial with the first shell 3, and the first roller body 24 is rotatably connected to the first shell 3 through a first central axis 17. An air inlet C is provided on the left outer wall of the first shell 3, and the ventilation pipe 2 is connected to the air inlet C. An air outlet C is also provided on the outer wall of the first shell 3 on the opposite side of the air inlet C, and the air outlet C is connected to the air inlet D of the "V"-shaped pipe 4, as shown in FIG. Figure 1 As shown, a dry dust outlet 34 is provided at the bottom of the first shell 3, and the dry dust outlet 34 is fixedly connected to the upper end of the first connecting pipe 18. A first brush 26 is also provided on the inner wall of the first shell 3 between the air inlet C and the air outlet C, and a second brush 27 is provided on the inner wall of the first shell 3 between the air outlet C and the dry dust outlet 34. Figure 2 As shown, the two ends of the first brush 26 and the second brush 27 are in contact with the inner surfaces of the two ends of the first shell 3, and a plurality of inverted truncated cone-shaped first grooves 25 are evenly distributed on the outer surface of the side wall of the first roller body 24, and the outer surface of the side wall of the second roller body 24 is in contact with the ends of the first brush 26 and the second brush 27;

[0028] like Figure 5 As shown, the end of the first central shaft 17 extends out of the first shell 3 , and a first reduction motor 23 is fixedly connected to the outside of the first shell 3 . The output shaft of the first reduction motor 23 is fixedly connected to the end of the first central shaft 17 .

[0029] In this embodiment, Figure 1 , 2 As shown in the figure, when the gas with dust passes through the first brush 26 and the second brush 27, it will be filtered by the brushes; after the first reduction motor 23 is connected to the external power supply and started, the first reduction motor 23 drives the first roller body 24 to rotate at a constant speed. During the rotation, the bristles of the brush will vibrate, and some of the dust trapped on the brush will fall into the first groove 25, and some will slide to the dry dust discharge port 34 due to gravity. In addition, during the rotation of the first roller body 24, the dust floating in the first shell 3 will be drawn into the first groove 25. In the groove 25, since the inner diameter of the first groove 25 gradually decreases toward the inside, the dust collides with the groove wall of the first groove and is adsorbed on each other, and finally forms dust accumulation in the first groove together with the dust vibrated and dropped from the brush. The accumulated dust and the fallen dust fall into the dry dust collecting box 9 through the dry dust discharge port 34. A dust discharge port should be provided on the dry dust collecting box 9 to discharge the dust when there is too much dust. Due to the vibration of the bristles driven by the first roller body 24, the bristles on the brush will cause irregular movement and deformation, thereby improving the filtering effect of the brush.

[0030] Example 2

[0031] Based on Example 1, further improvements are made in this example, specifically as follows:

[0032] As Figure 1 shown, a first filter screen 35 for filtering coarse particles is provided at the air inlet A101 of the dust removal fan. A coarse particle discharge port is provided at the bottom of the side wall of the air inlet A101 where the outer side of the first filter screen 35 is located. The bottom of the coarse particle discharge port is connected to a coarse particle discharge pipe 20, and the lower end of the coarse particle discharge pipe 20 is connected to a dry dust collection box 9.

[0033] In this example, by providing the coarse particle discharge pipe 20 and the first filter screen 35, the coarse particles in the air can be preliminarily filtered and discharged into the dry dust collection box 9 before entering the first housing, so that the dry dust removal device mainly filters and purifies the medium dust particles in the air, and further enables the wet dust removal device to filter and purify the fine dust particles in the air.

[0034] Example 3

[0035] Based on Example 2, further improvements are made in this example, specifically as follows:

[0036] As Figure 1 、 4 shown, a wet dust collection box 7 is provided at the bottom of the wet dust removal device. The top end of the wet dust collection box 7 is connected to a cylindrical second housing 5 through a funnel-shaped second connecting pipe 15. An air inlet E is provided on one side of the second housing 5. The air outlet D of the "V"-shaped pipe 4 is connected to the air inlet E. An air outlet E32 is also provided at the top end of the second housing 5. An air outlet pipe 13 is provided at the air outlet E32. A second filter screen is provided in the air outlet pipe 13. An atomizing device 8 is connected between the wet dust collection box 7 and the dry dust collection box 9. The atomizing gas outlet of the atomizing device 8 is communicated with the second housing 5 through a connecting pipe 11. A wet dust discharge port 33 is provided at the lower end of the second housing 5, and the wet dust discharge port 33 is connected to the second connecting pipe 15.

[0037] In this example, by introducing atomizing gas into the second housing 5, the fine dust particles in the air are purified. The purified gas is filtered by the second filter screen and discharged into the TBM tunnel. The wet dust formed by the bonding of the atomizing gas falls into the wet dust collection box 7 through the second connecting pipe 15. The wet dust collection box 7 should be provided with a sewage discharge port. When there is more wet dust in the wet dust collection box 7, it can be discharged through the sewage discharge port.

[0038] Example 4

[0039] Based on Embodiment 3, further improvements are made in this embodiment, specifically as follows:

[0040] As Figure 1 、 4 shown, a second central axis 12 is further provided inside the second housing. The second central axis 12 is a hollow structure with one end closed. A plurality of atomized gas discharge holes 36 are evenly distributed on the side wall of the hollow structure and inside the second housing 5. The upper end of the connecting pipe 11 is connected to the open end of the second central axis 12;

[0041] As Figure 1 、 3 shown, the second central axis 12 is coaxial with the second housing 5 and is rotatably connected to both ends of the second housing 5. A second roller 28 is sleeved outside the second central axis 12. A plurality of second grooves 29 with a trapezoidal cross-section are evenly distributed on the outer wall of the second roller 28. The area of the bottom of the second groove 29 is smaller than the area of the groove opening, and the bottom of the groove is communicated with the atomized gas discharge holes 36. A third brush 30 is further provided on the inner surface of the side wall of the second housing 5 between the air outlet D and the air outlet E32. A fourth brush 31 is provided on the inner surface of the side wall of the second housing 5 between the air outlet E32 and the wet dust discharge port 33. The outer surface of the second roller 28 is in contact with the ends of the third brush 30 and the fourth brush 31 respectively;

[0042] As Figure 5 shown, the closed end of the second central axis 12 extends outside the second housing 5. A second deceleration motor 22 is fixedly connected outside the second housing 5. The output shaft of the second deceleration motor 22 is fixedly connected to the end of the second central axis 12.

[0043] In this embodiment, the atomizing device 8 and the second deceleration motor 22 are both connected to an external power source. The atomized gas is discharged into the second groove 29 through the atomized gas discharge holes 36 and diffuses inside the second housing 5. The fine dust particles in the air are purified by adhering to the atomized gas. During this process, the atomized gas also condenses on the bristles of the brush. When the second deceleration motor 22 drives the second roller 28 to rotate, it will disturb the bristles to vibrate, so that the filtering effect of the brush is better. The vibration will cause the adhered dust on the bristles to slide into the second groove 29, and a part of it will directly slide to the wet dust discharge port 33. At the same time, during the uniform rotation of the second roller 28, the fine dust particles in the air will also adhere to the inner wall of the second groove 29. When the second groove rotates to the position where the groove opening is downward, the wet dust slides to the wet dust discharge port 33, and the wet dust at the wet dust discharge port 33 enters the wet dust collection box 7.

[0044] Embodiment 5,

[0045] On the basis of Embodiment 4, further improvements have been made in this embodiment, specifically as follows:

[0046] As Figure 4 shown, an exhaust fan 10 is further provided on the connecting pipe 11.

[0047] A handle 6 is fixedly connected to the end of the wet dust collection box 7 away from the dust removal fan 1.

[0048] This embodiment provides some small improvements. In addition, in order to make the use of the present invention more convenient, a control panel can be provided on the present invention, and switch buttons for each electrical component are provided on the control panel.

[0049] Principle of use of the present invention:

[0050] The present invention preliminarily filters coarse dust particles through the first filter screen 35, and the remaining air containing medium-sized dust particles is purified and filtered by the dry dust removal device, while the air containing fine dust particles is further filtered by the wet dust removal device, and finally the air is discharged through the filtration of the second filter screen. Throughout the process, a sufficient air purification and filtration effect can be achieved, which can effectively improve the working environment of TBM tunnel operations, and is safe, environmentally friendly, easy to move, highly flexible in the use of the purification site, and more targeted.

Claims

1. A mobile dust removal device for TBM tunnels, Characterized in that: It includes a dust removal fan, a ventilation pipe, a dry dust removal device, and a wet dust removal device. The air outlet A of the dust removal fan is connected to the air inlet B of the ventilation pipe. The air outlet B of the ventilation pipe is connected to the dry dust removal device. The dry dust removal device is connected to the wet dust removal device through an inverted "V" - shaped pipe. The bottoms of the dry dust removal device and the wet dust removal device are connected as an integral structure, and universal wheels are provided at the bottom of the integral structure; A dry dust collection box is provided at the bottom of the dry dust removal device. At the top of the dry dust collection box, a cylindrical first housing is connected through a funnel - shaped first connecting pipe. A first roller is provided inside the first housing. The first roller is coaxial with the first housing and is rotationally connected to the first housing through a first central shaft. An air inlet C is provided on the outer wall of the left side of the first roller. The ventilation pipe is connected to the air inlet C. An air outlet C is also provided on the outer wall of the first housing opposite to the air inlet C. The air outlet C is connected to the air inlet D of the "V" - shaped pipe. A dry dust discharge port is provided at the bottom of the first housing. The dry dust discharge port is fixedly connected to the upper end of the first connecting pipe. A first brush is also provided on the inner wall of the first housing between the air inlet C and the air outlet C. A second brush is provided on the inner wall of the first housing between the air outlet C and the dry dust discharge port. The two ends of the first brush and the second brush are attached to the inner surfaces of the two ends of the first housing. A plurality of inverted frustum - shaped first grooves are evenly distributed on the outer surface of the side wall of the first roller. The outer surface of the side wall of the first roller contacts the ends of the first brush and the second brush; When the first roller rotates at a constant speed, it will cause the bristles of the first or second brush to vibrate. Some of the dust intercepted on the first or second brush will fall into the first groove, and some will slide to the dry dust discharge port due to gravity. In addition, during the rotation of the first roller, the dust floating in the first housing will be drawn into the first groove. Since the inner diameter of the first groove gradually becomes smaller towards the inside, the dust collides with the groove wall of the first groove and adsorbs to each other, and finally forms accumulated dust in the first groove together with the dust vibrating and falling from the brush. The accumulated dust and the sliding dust fall into the dry dust collection box through the dry dust discharge port.

2. A mobile dust removal device for TBM tunnels according to claim 1, Characterized in that: The end of the first central shaft extends out of the first housing. A first reduction motor is also fixedly connected outside the first housing. The output shaft of the first reduction motor is fixedly connected to the end of the first central shaft.

3. A mobile dust removal device for TBM tunnels according to claim 2, Characterized in that: A first filter for filtering coarse particles is provided at the air inlet A of the dust removal fan. A coarse particle discharge port is provided at the bottom of the side wall of the air inlet A where the outer side of the first filter is located. The bottom of the coarse particle discharge port is connected to a coarse particle discharge pipe. The lower end of the coarse particle discharge pipe is connected to the dry dust collection box.

4. A mobile dust removal device for TBM tunnels according to claim 3, It is characterized in that: A wet dust collection box is provided at the bottom of the wet dust removal device. The top end of the wet dust collection box is connected to a cylindrical second housing through a funnel-shaped second connecting pipe. An air inlet E is provided on one side of the second housing. The air outlet D of the "V"-shaped pipe is connected to the air inlet E. An air outlet E is also provided at the top end of the second housing. An air outlet pipe is provided at the air outlet E. A second filter screen is provided in the air outlet pipe. An atomization device is connected between the wet dust collection box and the dry dust collection box. The atomized gas outlet of the atomization device is communicated with the second housing through a connecting pipe. A wet dust discharge port is provided at the lower end of the second housing. The wet dust discharge port is connected to the second connecting pipe.

5. A TBM tunnel mobile dust removal device according to claim 4, It is characterized in that: A second central shaft is further provided in the second housing. The second central shaft is a hollow structure with one end closed. A plurality of atomized gas discharge holes are evenly distributed on the side wall of the hollow structure and inside the second housing. The upper end of the connecting pipe is connected to the open end of the second central shaft.

6. A TBM tunnel mobile dust removal device according to claim 5, It is characterized in that: The second central shaft is coaxial with the second housing and is rotatably connected to both ends of the second housing. A second roller body is sleeved outside the second central shaft. A plurality of second grooves with a trapezoidal cross-section are evenly distributed on the outer wall of the second roller body. The area of the bottom of the second groove is smaller than the area of the notch, and the bottom of the groove is communicated with the atomized gas discharge hole. A third brush is further provided on the inner surface of the side wall of the second housing between the air outlet D and the air outlet E. A fourth brush is provided on the inner surface of the side wall of the second housing between the air outlet E and the wet dust discharge port. The outer surface of the second roller body is respectively in contact with the ends of the third brush and the fourth brush.

7. A TBM tunnel mobile dust removal device according to claim 6, It is characterized in that: The closed end of the second central shaft extends outside the second housing. A second reduction motor is fixedly connected outside the second housing. The output shaft of the second reduction motor is fixedly connected to the end of the second central shaft.

8. A TBM tunnel mobile dust removal device according to claim 7, It is characterized in that: A suction fan is further provided on the connecting pipe.

9. A TBM tunnel mobile dust removal device according to claim 8, It is characterized in that: A handle is fixedly connected to the end of the wet dust collection box far away from the dust removal fan.

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