Dust removal equipment for tunnel construction

Abstract

The dust removal equipment for tunnel construction comprises a fan, a first motor is arranged on one side of the fan, supporting tables are fixedly connected to the bottom of the fan and the bottom of the first motor, a third connecting pipe is fixedly connected to one side of the fan, and a dust removal assembly is arranged at the end, away from the fan, of the third connecting pipe. And conveying assemblies are arranged on one side of the dust removal assembly, and one conveying assembly is fixedly connected with the other conveying assembly through bolts. According to the tunnel dust removal device, dust generated by tunneling in the tunnel body is sucked into the pipe body through the dust suction hopper, effective dust removal in the tunnel construction process is achieved, the situation that a large amount of dust is generated in the tunneling construction process of the tunnel, and the view and body health of workers are affected is avoided, and meanwhile in the dust suction process of the dust suction hopper, dust is effectively removed. By means of the mesh cover arranged at the end of the pipe body, the situation that broken stones generated in the working process of the heading machine splash into the pipe body to cause blockage and even damage can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal in tunnel construction, and in particular to dust removal equipment for tunnel construction. Background Art

[0002] A tunnel is a structure built underground, underwater or in a mountain for laying railways or building roads for motor vehicles to pass through. According to their location, they can be divided into three categories: mountain tunnels, underwater tunnels and urban tunnels. Mountain tunnels are those that pass under mountains or hills to shorten the distance and avoid steep slopes; underwater tunnels are those that pass under rivers or seabeds to cross rivers or straits; and urban tunnels are those that pass underground in cities to meet the needs of railways passing through large cities.

[0003] At present, a large amount of dust is generated during the tunnel excavation process, and the dust mostly gathers at the head of the tunnel boring machine and spreads around. If the dust is not discharged from the tunnel in time, it will not only affect the normal work of the tunnel excavation equipment, but also threaten the health of the workers in the tunnel.

[0004] After searching, the Chinese invention patent with the announcement number CN113339045A discloses a tunnel construction dust removal device, including a fog cannon machine body, and a plurality of moving mechanisms are arranged on the lower side of the fog cannon machine body, the moving mechanism includes a mounting part, and a universal wheel is rotatably connected to the mounting part; the mounting part is connected to a supporting and stabilizing mechanism, and the supporting and stabilizing mechanism includes a rotating telescopic part, and a fixed screw rod is connected to the rotating telescopic part, and a first locking plate and a rotating ring are sleeved on the fixed screw rod, and a supporting telescopic part is fixedly connected to the rotating ring, and a support plate is connected to the end of the supporting telescopic part away from the rotating ring.

[0005] Based on the existing technologies, the above patents still have the following shortcomings: spraying water mist in the tunnel can only play a certain dust reduction role, and cannot discharge the dust generated during the excavation process from the tunnel. The dust removal effect is poor and cannot meet people's demand for dust removal in tunnels. Therefore, a dust removal device for tunnel construction is urgently needed to solve the above problems. Summary of the invention

[0006] In view of the problems in the related technology, the present invention proposes a dust removal device for tunnel construction to overcome the above-mentioned technical problems existing in the existing related technology.

[0007] The technical solution of the present invention is achieved in this way:

[0008] A dust removal device for tunnel construction, comprising a fan, a first motor is arranged on one side of the fan, a support platform is fixedly connected to the bottom of the fan and the first motor, a third connecting pipe is fixedly connected to one side of the fan, and a dust removal assembly is arranged at one end of the third connecting pipe away from the fan;

[0009] A conveying assembly is provided on one side of the dust removal assembly, and one set of the conveying assemblies is fixedly connected to another conveying assembly by bolts;

[0010] One end of a group of the conveying components is connected to a dust collecting component by bolts;

[0011] The dust collection assembly includes a dust collection hopper fixedly connected to one end of the conveying assembly, one end of the dust collection hopper is fixedly connected to horizontal columns distributed in a circle at equal distances, one end of the horizontal column away from the dust collection hopper is fixedly connected to a mesh cover, the circumferential outer wall of the dust collection hopper is fixedly connected to a blocking cover, and the mesh cover is located inside the blocking cover;

[0012] A guide plate is fixedly connected to the circumferential inner wall of the dust hopper, the guide plates are distributed in a circular shape with equal distances inside the dust hopper, and the cross section of the guide plate is wavy;

[0013] The conveying assembly and the dust collecting assembly are both located inside the tunnel body.

[0014] Further, the dust removal assembly includes a dust removal box fixedly connected to one end of the third connecting pipe, the top outer wall of the dust removal box is provided with a fixed cover, the top inner wall of the fixed cover is fixedly connected to the second motor, the output end of the second motor is fixedly connected to a rotating column, the circumferential outer wall of the rotating column is fixedly connected to a shaft sleeve, the circumferential outer wall of the shaft sleeve is fixedly connected to a fan blade, the fan blade is located inside the fixed cover, one end of the rotating column extending to the outside of the fixed cover is rotatably connected to the top of the dust removal box, the circumferential outer wall of the fixed cover is plugged with a second connecting pipe, one end of the second connecting pipe is fixedly connected to an air guide pipe, one end of the air guide pipe is fixedly connected to a backblowing pipe, and the circumferential outer wall of the backblowing pipe is plugged with blowing hoppers distributed at equal distances, the inside of the dust removal box is fixedly connected with a first partition and a second partition, one side of the first partition is fixedly connected to an inner liner frame, the outer wall of the inner liner frame is provided with a filter bag, the blowing hopper is located at one end of the filter bag, and an air inlet hole is opened on one side outer wall of the second partition.

[0015] Furthermore, a spoiler is fixedly connected to an outer wall of one side of the second partition, the cross section of the spoiler is arc-shaped, and the spoilers are distributed in an equidistant circle along the outer wall of the air inlet.

[0016] Furthermore, a crank is fixedly connected to the circumferential outer wall of the rotating column, an end of the crank away from the rotating column is rotatably connected to a connecting rod, a sliding seat is fixedly connected to the top outer wall of the dust removal box, the interior of the sliding seat is slidably connected to a slider, and the top of the slider is rotatably connected to the end of the connecting rod away from the crank.

[0017] Furthermore, a cross bar is fixedly connected to the top outer wall of the slider, a slide bar is fixedly connected to one side outer wall of the cross bar, a cleaning brush is fixedly connected to one end of the slide bar, the cross-section of the cleaning brush is circular, the center of the circle of the cleaning brush is the same as the center of the circle of the filter bag, a group of the cleaning brushes are fixedly connected to the circumferential outer wall with an inclined rod, one end of the inclined rod away from the cleaning brush is fixedly connected to another cleaning brush, a slide groove is provided on the top outer wall of the dust removal box, and one end of the slide rod passes through the inside of the slide groove.

[0018] Furthermore, the top outer wall of the dust removal box is fixedly connected to a shell, the top outer wall of the shell is fixedly connected to a reinforcement frame, and one end of the reinforcement frame is fixedly connected to a fixed cover.

[0019] Furthermore, a dust hopper is fixedly connected to the bottom outer wall of the dust removal box, the cross section of the dust hopper is an isosceles trapezoid, a first dust exhaust pipe is plugged into the bottom of the dust hopper, and a control valve is fixedly connected to the circumferential outer wall of the first dust exhaust pipe.

[0020] Furthermore, the conveying assembly includes a pipe body, a first connecting pipe is fixedly connected to a side of the dust removal box away from the third connecting pipe, the first connecting pipe is fixedly connected to the first connecting pipe, a vertical pipe is arranged at the bottom of the pipe body, a conical pipe is fixedly connected to the bottom end of the vertical pipe, a second dust exhaust pipe is fixedly connected to the bottom end of the conical pipe, a dust storage cylinder is arranged at the bottom end of the second dust exhaust pipe, a straight pipe is arranged inside the vertical pipe, one end of the straight pipe passes through the top of the vertical pipe, the top end of the straight pipe is connected to the pipe body, a flow guide assembly is arranged at the bottom of the straight pipe, and an air intake assembly is arranged on the circumferential outer wall of the vertical pipe.

[0021] Furthermore, the air intake assembly includes an arc tube fixedly connected to the circumferential outer wall of the tube body, an accelerating tube is arranged at one end of the arc tube away from the tube body, the accelerating tube includes an expansion portion, a narrow throat portion and a contraction portion, one end of the contraction portion is fixedly connected to a bent pipe, one end of the bent pipe is plugged with a cyclone tube, the cyclone tube is connected to the vertical pipe, and a baffle is fixed to the circumferential inner wall of the tube body, and the baffle is located above the end of the arc tube.

[0022] Furthermore, the flow guide assembly includes a flow stabilizer fixedly connected to the bottom end of the straight tube, the flow stabilizer is distributed in an equidistant circle at the bottom end of the straight tube, the flow stabilizer includes a trapezoidal plate and a straight plate, and an outer wall on one side of the straight plate is provided with equidistantly distributed grooves.

[0023] Beneficial effects of the present invention:

[0024] The present invention provides a dust removal device for tunnel construction. Through the dust suction component, a suitable number of conveying components can be installed according to the depth of the tunnel construction during the tunnel excavation construction. After the conveying components are fixed at both ends, the dust suction component is moved to the excavation area close to the tunnel body and the first motor is started. The first motor can make the fan generate a strong negative pressure suction force, and the negative pressure suction force directly reaches the dust suction hopper through the pipe body in the conveying component, so that the dust generated by the excavation inside the tunnel body can be sucked into the pipe body through the dust suction hopper, thereby realizing effective dust removal during the tunnel construction process and avoiding the generation of a large amount of dust during the tunnel excavation construction process that affects the vision and health of the workers. The dust collecting hopper can effectively prevent the stone debris generated during the working of the tunnel boring machine from splashing into the pipe body and causing blockage or even damage. A certain gap is left between the baffle fixed at one end of the dust collecting hopper and the mesh cover, which can not only expand the dust collecting area of ​​the dust collecting hopper, but also prevent stone debris from entering the pipe body. Then the dust-containing gas enters the pipe body through the dust collecting hopper. In the process of gas flowing through the dust collecting hopper, the guide plate with a wavy cross-section can play a good role in guiding and gathering, so that the airflow can be concentrated into the pipe body, avoiding the situation where the gas is too dispersed and causes insufficient suction.

[0025] The dust removal equipment for tunnel construction provided by the present invention has a conveying component, and after the gas flows into the interior of the pipe body, a part of it will be blocked by the baffle plate, so that it flows into the interior of the arc tube. The gas entering the arc tube will pass through the expansion part, the narrow throat and the contraction part in the speed-increasing tube, and then flow into the cyclone tube after being effectively accelerated. The dust-containing gas can form an inner vortex and an outer vortex in the vertical tube through the cyclone tube. The outer vortex can separate the dust-containing gas from the airflow with the help of centrifugal force and capture the dust on the inner walls of the vertical tube and the conical tube. Finally, the dust particles are dropped into the dust storage tube with the help of gravity. The clean gas flows back to the inside of the tube through the straight tube, thereby realizing the dust removal, purification and collection of part of the dust-containing gas inside the tube, avoiding the subsequent dust concentration in the dust removal component to cause blockage, and effectively reducing the dust removal pressure of the dust removal component. At the same time, in the process of clean gas rising from the straight tube, the trapezoidal plate and the straight plate can make the vortex airflow smooth into direct current, which has a good drag reduction effect, and the groove on one side of the straight plate can increase the contact area between the airflow and its outer wall, so that more fine dust can adhere to its outer wall, which has a good dust reduction effect.

[0026] The dust removal equipment for tunnel construction provided by the present invention has a dust removal assembly. When the airflow flows into the dust removal box through the pipe body, the filter bag arranged in the dust removal box can fully filter the airflow and remove dust, so as to prevent the airflow from carrying dust into the fan and causing damage to the fan. When the airflow is discharged from the air inlet hole on one side of the second partition plate, the wind force can be effectively dispersed through the spoiler, so that the airflow can be evenly contacted with multiple filter bags, thereby improving the utilization rate of the filter bags. When the tunnel construction is stopped, more dust is adsorbed on the surface of the filter bags. Dust, at this time the staff starts the motor, and the second motor can drive the fan blades to rotate to generate wind. The wind passes through the back-blowing pipe and is ejected by the blowing bucket, thereby realizing back-blowing dust removal for the filter bag and avoiding clogging of the filter bag. The crank can be driven to rotate during the rotation of the rotating rod. At the same time, the crank is rotatably connected to the connecting rod, and one end of the connecting rod is restricted by the sliding seat, so that the connecting rod can slide back and forth with the slider, so that the filter bag far away from the blowing bucket will be cleaned by the back and forth movement of the cleaning brush, thereby still maintaining the permeability of the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the overall front structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the overall bottom-up structure of the present invention.

[0030] Figure 3 For the present invention Figure 2 Schematic diagram of the structure.

[0031] Figure 4 It is a schematic diagram of the working state of the present invention in a tunnel.

[0032] Figure 5 It is a partial half-section structural schematic diagram of the present invention.

[0033] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0034] Figure 7 It is a schematic diagram of the internal structure of the vertical pipe of the present invention.

[0035] Figure 8 For the present invention Figure 7Schematic diagram of the enlarged structure at point C in the middle.

[0036] Fig. 9 It is a schematic diagram of the internal structure of the dust removal box of the present invention.

[0037] Fig.10 It is a schematic diagram of the shell disassembly structure of the present invention.

[0038] Fig.11 It is a schematic structural diagram of one side of the second partition of the present invention.

[0039] In the figure:

[0040] 1. Fan; 2. Dust removal assembly; 2001. Dust removal box; 2002. Dust hopper; 2003. First dust exhaust pipe; 2004. Shell; 2005. First connecting pipe; 2006. Reinforcement frame; 2007. Fixed cover; 2008. Second connecting pipe; 2009. Crossbar; 2010. Sliding rod; 2011. Filter bag; 2012. Cleaning brush; 2013. Oblique rod; 2014. Lining frame; 2015. Blowing hopper; 2016. Backflush pipe; 2017. Air guide pipe; 2018. Sliding seat; 2019. Connecting rod; 2020. Crank; 2021. Second motor; 2022. Fan blade; 2023. Rotating column; 2024. Slide; 2025. First partition plate; 2026, second partition plate; 2027, slider; 2028, spoiler; 3, first motor; 4, third connecting pipe; 5, support platform; 6, conveying assembly; 6001, tube body; 6002, arc tube; 6003, expansion part; 6004, narrow throat; 6005, contraction part; 6007, cyclone tube; 6008, vertical pipe; 6009, dust collection cylinder; 6010, second dust exhaust pipe; 6011, conical tube; 6012, straight pipe; 6013, trapezoidal plate; 6014, straight plate; 6015, groove; 7, dust suction assembly; 7001, baffle; 7002, mesh cover; 7003, dust suction hopper; 7004, horizontal column; 7005, guide plate; 8, tunnel body. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0042] See also Figure 1-Figure 11A dust removal device for tunnel construction includes a fan 1, a first motor 3 is arranged on one side of the fan 1, a support platform 5 is fixedly connected to the bottom of the fan 1 and the first motor 3, a third connecting pipe 4 is fixedly connected to one side of the fan 1, and a dust removal component 2 is arranged at one end of the third connecting pipe 4 away from the fan 1;

[0043] A conveying assembly 6 is provided on one side of the dust removal assembly 2, and one set of conveying assemblies 6 is fixedly connected to another conveying assembly 6 by bolts;

[0044] One end of a set of conveying components 6 is connected to a dust collecting component 7 by bolts;

[0045] The dust collection assembly 7 includes a dust collection hopper 7003 fixedly connected to one end of the conveying assembly 6, one end of the dust collection hopper 7003 is fixedly connected to horizontal columns 7004 distributed in a circle at equal distances, one end of the horizontal column 7004 away from the dust collection hopper 7003 is fixedly connected to a mesh cover 7002, the outer circumferential wall of the dust collection hopper 7003 is fixedly connected to a blocking cover 7001, and the mesh cover 7002 is located inside the blocking cover 7001;

[0046] The inner circumferential wall of the dust hopper 7003 is fixedly connected with a guide plate 7005. The guide plates 7005 are distributed in an equidistant circle inside the dust hopper 7003. The cross section of the guide plates 7005 is wavy. The dust-laden gas enters the tube body 6001 through the dust hopper 7003. In the process of the gas flowing through the dust hopper 7003, the guide plates 7005 with a wavy cross section can play a good role in guiding and gathering the gas, so that the gas can flow into the tube body 6001 in a concentrated manner, avoiding the situation where the gas is too dispersed and causes insufficient suction.

[0047] The conveying assembly 6 and the dust collecting assembly 7 are both located inside the tunnel body 8 .

[0048] Preferably, the dust removal assembly 2 includes a dust removal box 2001 fixedly connected to one end of the third connecting pipe 4, the top outer wall of the dust removal box 2001 is provided with a fixed cover 2007, the top inner wall of the fixed cover 2007 is fixedly connected to the second motor 2021, the output end of the second motor 2021 is fixedly connected to a rotating column 2023, the circumferential outer wall of the rotating column 2023 is fixedly connected to a shaft sleeve, the circumferential outer wall of the shaft sleeve is fixedly connected to a fan blade 2022, and the fan blade 2022 is located on the fixed cover. The interior of the dust removal box 2001 is provided with a rotating column 2023, one end of the rotating column 2023 extending to the outside of the fixed cover 2007 is rotatably connected to the top of the dust removal box 2001, the circumferential outer wall of the fixed cover 2007 is plugged with a second connecting pipe 2008, one end of the second connecting pipe 2008 is fixedly connected to an air guide pipe 2017, one end of the air guide pipe 2017 is fixedly connected to a back-blowing pipe 2016, and the circumferential outer wall of the back-blowing pipe 2016 is plugged with equidistantly distributed blowing hoppers 2015, and the interior of the dust removal box 2001 is provided with a rotating column 2023 extending to the outside of the fixed cover 2007 and is rotatably connected to the top of the dust removal box 2001, and ... rotating column 2023 extends to the inside of the dust removal box 2001, and the rotating column 2023 extends to the inside of the dust removal box 2001, and the rotating column 2023 extends to the inside of the dust removal box 2 A first baffle 2025 and a second baffle 2026 are fixedly connected, and an inner liner frame 2014 is fixedly connected to one side of the first baffle 2025. A filter bag 2011 is sleeved on the outer wall of the inner liner frame 2014. When the airflow flows into the dust removal box 2001 through the tube body 6001, the filter bag 2011 arranged in the dust removal box 2001 can fully filter and remove dust from the airflow, thereby preventing the airflow from carrying dust into the fan 1 and causing damage to it. The air blowing hopper 2015 is located at At one end of the filter bag 2011, an air inlet hole is opened on the outer wall of one side of the second partition 2026. When the tunnel construction stops, a lot of dust is adsorbed on the surface of the filter bag 2011. At this time, the staff starts the motor, and the second motor 2021 can drive the fan blades 2022 to rotate to generate wind force. The wind force passes through the backblowing pipe 2016 and is ejected by the blowing hopper 2015, thereby realizing backblowing dust removal of the filter bag 2011 and avoiding clogging of the filter bag 2011.

[0049] Preferably, a spoiler 2028 is fixedly connected to the outer wall of one side of the second partition 2026, and the cross-section of the spoiler 2028 is arc-shaped. The spoilers 2028 are distributed in a circular shape at equal distances along the outer wall of the air inlet. When the airflow is discharged from the air inlet on one side of the second partition 2026, the wind force can be effectively dispersed through the spoiler 2028, so that the airflow can evenly contact multiple filter bags 2011, thereby improving the utilization rate of the filter bags 2011.

[0050] Preferably, the circumferential outer wall of the rotating column 2023 is fixedly connected with a crank 2020, and the end of the crank 2020 away from the rotating column 2023 is rotatably connected with a connecting rod 2019, the top outer wall of the dust removal box 2001 is fixedly connected with a sliding seat 2018, the inner sliding connection of the sliding seat 2018 is connected to a slider 2027, the top of the slider 2027 is rotatably connected to the end of the connecting rod 2019 away from the crank 2020, the top outer wall of the slider 2027 is fixedly connected with a cross bar 2009, and the outer wall of one side of the cross bar 2009 is fixedly connected with a sliding rod 2010, and one end of the sliding rod 2010 is fixedly connected with a cleaning brush 2012, the cross section of the cleaning brush 2012 is circular, and the center of the cleaning brush 2012 is the same as the center of the filter bag 211. A group of cleaning brushes An inclined rod 2013 is fixedly connected to the circumferential outer wall of 2012, and one end of the inclined rod 2013 away from the cleaning brush 2012 is fixedly connected to another cleaning brush 2012. A slide groove 2024 is provided on the top outer wall of the dust removal box 2001. One end of the slide rod 2010 passes through the inside of the slide groove 2024, and can drive the crank 2020 to rotate during the rotation of the rotating rod. At the same time, the crank 2020 is rotatably connected to the connecting rod 2019, and one end of the connecting rod 2019 is restricted by the sliding seat 2018, so that the connecting rod 2019 can slide back and forth following the slider 2027, so that the filter bag 2011 in the area farther away from the blowing bucket 2015 will be cleaned by the back and forth movement of the cleaning brush 2012, so that the permeability of the surface can still be maintained.

[0051] Preferably, the top outer wall of the dust removal box 2001 is fixedly connected to the shell 2004, the top outer wall of the shell 2004 is fixedly connected to the reinforcement frame 2006, and one end of the reinforcement frame 2006 is fixedly connected to the fixed cover 2007, which can effectively ensure the stability of the connection between the shell 2004 and the reinforcement frame 2006.

[0052] Preferably, a dust hopper 2002 is fixedly connected to the bottom outer wall of the dust removal box 2001, the cross-section of the dust hopper 2002 is an isosceles trapezoid, a first dust exhaust pipe 2003 is plugged into the bottom of the dust hopper 2002, and a control valve is fixedly connected to the circumferential outer wall of the first dust exhaust pipe 2003, so that dust deposited inside the dust hopper 2002 can be quickly discharged through the first dust exhaust pipe 2003.

[0053] Preferably, the conveying assembly 6 includes a tube body 6001, a first connecting tube 2005 is fixedly connected to the side of the dust removal box 2001 away from the third connecting tube 4, the first connecting tube 2005 is fixedly connected to the first connecting tube 2005, a vertical tube 6008 is arranged at the bottom of the tube body 6001, a conical tube 6011 is fixedly connected to the bottom end of the vertical tube 6008, a second dust exhaust pipe 6010 is fixedly connected to the bottom end of the conical tube 6011, a dust storage cylinder 6009 is arranged at the bottom end of the second dust exhaust pipe 6010, a straight tube 6012 is arranged inside the vertical tube 6008, one end of the straight tube 6012 passes through the top of the vertical tube 6008, and the top of the straight tube 6012 is connected to the The tube body 6001 is connected, a flow guide component is arranged at the bottom of the straight tube 6012, an air intake component is arranged on the circumferential outer wall of the vertical tube 6008, and the air intake component includes an arc tube 6002 fixedly connected to the circumferential outer wall of the tube body 6001, and an increase-increasing tube is arranged at one end of the arc tube 6002 away from the tube body 6001, and the increase-increasing tube includes an expansion part 6003, a narrow throat part 6004 and a contraction part 6005, and one end of the contraction part 6005 is fixedly connected to a bend tube, and one end of the bend tube is plugged with a cyclone tube 6007, and the cyclone tube 6007 is connected to the vertical tube 6008, and a baffle is fixed on the circumferential inner wall of the tube body 6001, and the baffle is located above the end of the arc tube 6002 , the dust-laden gas enters the tube body 6001 through the dust hopper 7003. When the gas flows through the dust hopper 7003, the guide plate 7005 with a wavy cross section can play a good role in guiding and gathering the gas, so that the gas can flow into the tube body 6001 in a concentrated manner, avoiding the situation where the gas is too dispersed and causes insufficient suction. After the gas flows into the tube body 6001, a part of it will be blocked by the baffle plate, and then flow into the arc tube 6002. The gas entering the arc tube 6002 will pass through the expansion part 6003, the narrow throat part 6004 and the contraction part 6005 in the speed-increasing tube, and then flow into the cyclone after being effectively accelerated. Inside the tube 6007, the dust-containing gas can form an inner vortex and an outer vortex inside the vertical tube 6008 through the cyclone tube 6007. The outer vortex can separate the dust particles from the airflow with the help of centrifugal force and capture them on the inner walls of the vertical tube 6008 and the tapered tube 6011. Finally, the dust particles fall into the dust collection tube 6009 for collection with the help of gravity, and the clean gas flows back to the inside of the tube body 6001 through the straight tube 6012, thereby realizing the dust removal, purification and collection of part of the dust-containing gas inside the tube body 6001, avoiding the subsequent dust concentration in the dust removal component 2 to cause blockage, and effectively reducing the dust removal pressure of the dust removal component 2.

[0054] Preferably, the flow guide component includes a flow stabilizer fixedly connected to the bottom end of the straight tube 6012, and the flow stabilizer is distributed in an equidistant circle at the bottom end of the straight tube 6012. The flow stabilizer includes a trapezoidal plate 6013 and a straight plate 6014. The outer wall of one side of the straight plate 6014 is provided with equidistantly distributed grooves 6015. In the process of clean gas rising from the straight tube 6012, the trapezoidal plate 6013 and the straight plate 6014 can smooth the vortex airflow into a direct current, which has a good drag reduction effect, and the groove 6015 opened on one side of the straight plate 6014 can increase the contact area between the airflow and its outer wall, so that more fine dust can adhere to its outer wall, which has a good dust reduction effect.

[0055] In summary, with the aid of the above technical solution of the present invention, during the tunnel excavation construction, a suitable number of conveying components 6 can be installed according to the depth of the tunnel construction. After the conveying components 6 are fixed at both ends, the dust collection component 7 is moved to the excavation area close to the tunnel body 8 and the first motor 3 is started. The first motor 3 can enable the fan 1 to generate a strong negative pressure suction force, and the negative pressure suction force directly reaches the dust collection hopper 7003 through the tube body 6001 in the conveying component 6, so that the dust generated by the excavation inside the tunnel body 8 can be sucked into the tube body 6001 through the dust collection hopper 7003, thereby achieving the goal of removing dust from the tunnel body 8 during the tunnel construction process. The effective dust removal during the process can prevent a large amount of dust from being generated during the tunnel excavation construction, which may affect the vision and health of the workers. At the same time, during the dust collection process of the dust hopper 7003, the mesh cover 7002 arranged at the end thereof can effectively prevent the debris generated during the working process of the tunnel boring machine from splashing into the pipe body 6001 to cause blockage or even damage. A certain gap is left between the baffle cover 7001 fixed at one end of the dust collection hopper 7003 and the mesh cover 7002, which can not only expand the dust collection area of ​​the dust collection hopper 7003, but also prevent the debris from entering the pipe body 6001.

[0056] Then the dust-laden gas enters the tube body 6001 through the dust hopper 7003. In the process of the gas flowing through the dust hopper 7003, the guide plate 7005 with a wavy cross-section can play a good role in guiding and gathering the gas, so that the gas can flow into the tube body 6001 in a concentrated manner, avoiding the situation where the gas is too dispersed and causes insufficient suction. After the gas flows into the tube body 6001, a part of it will be blocked by the baffle plate, and then flow into the arc tube 6002. The gas entering the arc tube 6002 will pass through the expansion part 6003, the narrow throat part 6004 and the contraction part 6005 in the speed-increasing tube, and then flow into the cyclone tube 6007 after being effectively accelerated. The cyclone tube 6007 can form an inner vortex and an outer vortex in the vertical tube 6008 for the dust-laden gas, and the outer vortex can enable the dust-laden gas to use centrifugal force to remove dust particles from The dust particles are separated from the airflow and captured on the inner walls of the vertical tube 6008 and the tapered tube 6011. Finally, the dust particles fall into the dust collection tube 6009 for collection by gravity, and the clean gas flows back to the inside of the tube body 6001 through the straight tube 6012, thereby realizing the dust removal, purification and collection of part of the dust-containing gas inside the tube body 6001, avoiding the subsequent dust concentration in the dust removal component 2 to cause blockage, and effectively reducing the dust removal pressure of the dust removal component 2. At the same time, in the process of the clean gas rising from the straight tube 6012, the trapezoidal plate 6013 and the straight plate 6014 can make the vortex airflow smooth into a direct current, which has a good drag reduction effect, and the groove 6015 opened on one side of the straight plate 6014 can increase the contact area between the airflow and its outer wall, so that more fine dust can adhere to its outer wall, which has a good dust reduction effect.

[0057] When the airflow flows into the dust removal box 2001 through the pipe body 6001, the filter bag 2011 arranged in the dust removal box 2001 can fully filter and remove dust from the airflow, so as to prevent the airflow from carrying dust into the fan 1 and causing damage thereto. When the airflow is discharged from the air inlet hole on one side of the second partition plate 2026, the wind force can be effectively dispersed by the spoiler 2028, so that the airflow can be evenly contacted with multiple filter bags 2011, thereby improving the utilization rate of the filter bags 2011. When the tunnel construction stops, the surface of the filter bag 2011 is adsorbed with a lot of dust. At this time, the staff starts the motor, which can be driven by the second motor 2021 The rotation of the fan blades 2022 generates wind force, which passes through the back-blowing pipe 2016 and is ejected from the blowing bucket 2015, thereby realizing back-blowing dust removal of the filter bag 2011 and avoiding clogging of the filter bag 2011. During the rotation of the rotating rod, the crank 2020 can be driven to rotate. At the same time, the crank 2020 is rotatably connected to the connecting rod 2019, and one end of the connecting rod 2019 is restricted by the sliding seat 2018, so that the connecting rod 2019 can slide back and forth following the slider 2027, so that the filter bag 2011 in the area farther away from the blowing bucket 2015 will be cleaned by the back and forth movement of the cleaning brush 2012, thereby still maintaining the permeability of the surface.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dust removal device for tunnel construction, comprising a fan (1), characterized in that: A first motor (3) is arranged on one side of the fan (1); the bottoms of the fan (1) and the first motor (3) are fixedly connected to a support platform (5); a third connecting pipe (4) is fixedly connected to one side of the fan (1); a dust removal assembly (2) is arranged at one end of the third connecting pipe (4) away from the fan (1); a conveying assembly (6) is arranged on one side of the dust removal assembly (2); one set of the conveying assemblies (6) is fixedly connected to another conveying assembly (6) by bolts; One end of a group of the conveying components (6) is connected to a dust collecting component (7) via bolts; The dust collection component (7) comprises a dust collection hopper (7003) fixedly connected to one end of the conveying component (6); one end of the dust collection hopper (7003) is fixedly connected to horizontal columns (7004) distributed in a circular shape with equal distances; one end of the horizontal column (7004) away from the dust collection hopper (7003) is fixedly connected to a mesh cover (7002); the circumferential outer wall of the dust collection hopper (7003) is fixedly connected to a blocking cover (7001); and the mesh cover (7002) is located inside the blocking cover (7001); A guide plate (7005) is fixedly connected to the circumferential inner wall of the dust hopper (7003), and the guide plates (7005) are distributed in a circular shape at equal distances inside the dust hopper (7003), and the cross section of the guide plates (7005) is wavy; The conveying component (6) and the dust collecting component (7) are both located inside the tunnel body (8).

2. A dust removal device for tunnel construction according to claim 1, characterized in that: The dust removal assembly (2) comprises a dust removal box (2001) fixedly connected to one end of the third connecting pipe (4); a fixed cover (2007) is provided on the top outer wall of the dust removal box (2001); a second motor (2021) is fixedly connected to the top inner wall of the fixed cover (2007); a rotating column (2023) is fixedly connected to the output end of the second motor (2021); a shaft sleeve is fixedly connected to the circumferential outer wall of the rotating column (2023); a fan blade (2022) is fixedly connected to the circumferential outer wall of the shaft sleeve; the fan blade (2022) is located inside the fixed cover (2007); one end of the rotating column (2023) extending to the outside of the fixed cover (2007) is rotatably connected to the top of the dust removal box (2001); A second connecting pipe (2008) is inserted into the circumferential outer wall, one end of the second connecting pipe (2008) is fixedly connected to an air guide pipe (2017), one end of the air guide pipe (2017) is fixedly connected to a back-blowing pipe (2016), and the circumferential outer wall of the back-blowing pipe (2016) is inserted with equidistantly distributed blowing scoops (2015), the interior of the dust removal box (2001) is fixedly connected to a first partition plate (2025) and a second partition plate (2026), one side of the first partition plate (2025) is fixedly connected to an inner liner frame (2014), the outer wall of the inner liner frame (2014) is sleeved with a filter bag (2011), the blowing scoop (2015) is located at one end of the filter bag (2011), and an air inlet hole is opened on one side of the outer wall of the second partition plate (2026).

3. A dust removal device for tunnel construction according to claim 2, characterized in that: A spoiler (2028) is fixedly connected to an outer wall of one side of the second partition plate (2026); the cross section of the spoiler (2028) is arc-shaped; and the spoilers (2028) are distributed in a circular shape at equal distances along the outer wall of the air inlet hole.

4. A dust removal device for tunnel construction according to claim 3, characterized in that: The circumferential outer wall of the rotating column (2023) is fixedly connected to a crank (2020), and the end of the crank (2020) away from the rotating column (2023) is rotatably connected to a connecting rod (2019), and the top outer wall of the dust removal box (2001) is fixedly connected to a sliding seat (2018), and the interior of the sliding seat (2018) is slidably connected to a slider (2027), and the top of the slider (2027) is rotatably connected to the end of the connecting rod (2019) away from the crank (2020).

5. A dust removal device for tunnel construction according to claim 4, characterized in that: The top outer wall of the slider (2027) is fixedly connected to a cross bar (2009), one side outer wall of the cross bar (2009) is fixedly connected to a slide bar (2010), one end of the slide bar (2010) is fixedly connected to a cleaning brush (2012), the cross section of the cleaning brush (2012) is circular, the center of the circle of the cleaning brush (2012) is the same as the center of the circle of the filter bag (2011), a group of the cleaning brushes (2012) are fixedly connected to the circumferential outer wall with an inclined rod (2013), one end of the inclined rod (2013) away from the cleaning brush (2012) is fixedly connected to another cleaning brush (2012), a slide groove (2024) is provided on the top outer wall of the dust removal box (2001), and one end of the slide bar (2010) passes through the inside of the slide groove (2024).

6. The dust removal equipment for tunnel construction according to claim 2, characterized in that: The top outer wall of the dust removal box (2001) is fixedly connected to a shell (2004), the top outer wall of the shell (2004) is fixedly connected to a reinforcing frame (2006), and one end of the reinforcing frame (2006) is fixedly connected to a fixed cover (2007).

7. The dust removal equipment for tunnel construction according to claim 2, characterized in that: The bottom outer wall of the dust removal box (2001) is fixedly connected to a dust collecting hopper (2002), the cross section of the dust collecting hopper (2002) is an isosceles trapezoid, the bottom of the dust collecting hopper (2002) is plugged with a first dust exhaust pipe (2003), and the circumferential outer wall of the first dust exhaust pipe (2003) is fixedly connected to a control valve.

8. The dust removal equipment for tunnel construction according to claim 2, characterized in that: The conveying assembly (6) comprises a tube body (6001), a first connecting tube (2005) is fixedly connected to a side of the dust removal box (2001) away from the third connecting tube (4), the first connecting tube (2005) is fixedly connected to the first connecting tube (2005), a vertical tube (6008) is arranged at the bottom of the tube body (6001), a conical tube (6011) is fixedly connected to the bottom end of the vertical tube (6008), and the conical tube (6011) is fixedly connected to the bottom end of the third connecting tube (4). A second dust exhaust pipe (6010), wherein a dust collecting tube (6009) is arranged at the bottom end of the second dust exhaust pipe (6010), a straight pipe (6012) is arranged inside the vertical pipe (6008), one end of the straight pipe (6012) passes through the top of the vertical pipe (6008), the top end of the straight pipe (6012) is connected to the pipe body (6001), a flow guide component is arranged at the bottom of the straight pipe (6012), and an air intake component is arranged on the circumferential outer wall of the vertical pipe (6008).

9. The dust removal equipment for tunnel construction according to claim 8, characterized in that: The air intake assembly comprises an arc-shaped tube (6002) fixedly connected to the circumferential outer wall of the tube body (6001); a speed-increasing tube is arranged at one end of the arc-shaped tube (6002) away from the tube body (6001); the speed-increasing tube comprises an expansion portion (6003), a narrow throat portion (6004) and a contraction portion (6005); one end of the contraction portion (6005) is fixedly connected to a bent tube; one end of the bent tube is plugged with a cyclone tube (6007); the cyclone tube (6007) is connected to the vertical tube (6008); a baffle is fixedly provided on the circumferential inner wall of the tube body (6001); the baffle is located above the end of the arc-shaped tube (6002).

10. The dust removal equipment for tunnel construction according to claim 8, characterized in that: The flow guide component comprises a flow stabilizing plate fixedly connected to the bottom end of the straight tube (6012), the flow stabilizing plate being distributed in a circular shape at equal distances at the bottom end of the straight tube (6012), the flow stabilizing plate comprising a trapezoidal plate (6013) and a straight plate (6014), and an outer wall on one side of the straight plate (6014) is provided with grooves (6015) distributed at equal distances.

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