CN216811770U - Dust falling device for underground excavation tunnel - Google Patents
Dust falling device for underground excavation tunnel Download PDFInfo
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- CN216811770U CN216811770U CN202220267260.5U CN202220267260U CN216811770U CN 216811770 U CN216811770 U CN 216811770U CN 202220267260 U CN202220267260 U CN 202220267260U CN 216811770 U CN216811770 U CN 216811770U
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Abstract
The utility model discloses a dust-settling device for a subsurface tunnel, which comprises a square box body, wherein one end of the square box body is provided with an opening on a vertical surface, a terrace-shaped air inlet facing the interior of the box body is formed in the opening, and the air inlet is sleeved outside a tunnel fan; the other end of the square box body is provided with an air outlet, and a plurality of water curtain fog curtains which are arranged in parallel are arranged between the air inlet and the air outlet; an inclined confluence plate is further arranged on the inner wall of the square box body below the water curtain fog curtain; device simple structure, simple to operate adopts the box structure of built-in four layers of netted heavy curtains, and the undercut tunnel passes through dust in the fan exhaust hole, thereby setting up through 4 layers of water curtain fog curtain net in this device is detained the dust in the water curtain fog curtain and is discharged through the cylinder manifold, reaches high-efficient dust removal effect, has guaranteed not because the dust pollution atmospheric environment's that tunnel construction produced problem takes place, effectively avoids the waste of water resource simultaneously.
Description
Technical Field
The utility model relates to the field of dust settling devices for tunnel construction, in particular to a dust settling device for a subsurface tunnel.
Background
The tunnel construction mechanization causes high-concentration dust to appear on a mining working surface, and the dust can cause air in a limited space of a subway tunnel to be polluted, harm the body health of constructors and cause occupational diseases; visibility in a limited operation space of the tunnel is reduced, and the possibility of industrial accidents is increased; the service life of a mechanical device and a precision instrument is shortened, and the construction progress is influenced; the dust increases the attenuation of electromagnetic waves and influences the use of the wireless communication device for subway tunnel construction. Therefore, dust fall treatment has to be carried out during tunnel excavation, but dust in the tunnel is beaten to the atmosphere outside the tunnel through the fan, and dust pollution is caused.
In the prior art, the underground excavated tunnel adopts a pull-out type dust fall mode, and dust in the tunnel is discharged through a fan, so that the concentration of the dust in the underground excavated tunnel is reduced. For the gas containing dust outside the discharge tunnel, the traditional dust fall mode is to reduce the influence of dust on the environment by a fog gun machine or a watering cart, the method consumes a lot of water resources, the effect is not ideal, and the environmental protection requirement cannot be met. Therefore, a dust settling device capable of effectively reducing the concentration of dust inside a subsurface tunnel and preventing dust pollution to the external environment is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a dust settling device for a subsurface tunnel, which solves the problems that water resources are wasted and dust settling effect is not ideal due to the fact that a fog gun machine or a sprinkler is generally adopted to spray water in the existing dust settling mode for dust outside the subsurface tunnel.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a dust fall device for a subsurface tunnel comprises a square box body, wherein one end of the square box body is provided with an opening in a vertical surface, a step-shaped air inlet facing the interior of the box body is formed in the opening, and the air inlet is sleeved outside a tunnel fan; the other end of the square box body is provided with an air outlet, and a plurality of water curtain fog curtains which are arranged in parallel are arranged between the air inlet and the air outlet; an inclined confluence plate is further arranged on the inner wall of the square box body below the water curtain fog curtain;
the water curtain fog curtain comprises a plurality of branch water pipes arranged at the top of the inner side of the square box body along the width direction of the box body, the branch water pipes are converged on the pressurized main water pipe, and the pressurized main water pipe penetrates through the side wall of the top of the square box body and is connected with an external water pipe; the lower half part of the branch water pipe is provided with a water spray hole which inclines towards the direction of the air inlet, and an atomizing spray head is arranged in the water spray hole; the bottom of the branch water pipe is also connected with a vertical iron wire grid.
Particularly, the front end of the bus bar is trapezoidal, and vertical baffles are arranged on the left side and the right side of the bus bar.
Furthermore, a wedge-shaped mounting plate which is low in front and high in back is arranged on a square box body bottom plate below the water curtain fog curtain, and the bus bar is arranged on the wedge-shaped mounting plate.
Furthermore, a water outlet is formed in the square box body bottom plate at the tail end of the bus board, and a wind shield is arranged on one side, close to the air outlet, below the water outlet.
Particularly, the side wall of the square box body is also provided with an opening and closing door hinged at one side.
Particularly, the number of the water curtain fog curtains is four.
Particularly, the distance between the adjacent water curtain fog curtains is gradually increased along the wind direction.
Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model has simple structure and convenient installation, adopts a box structure internally provided with four layers of net-shaped curtains, and secretly digs the tunnel to retain dust in the water curtain fog curtain and discharge the dust through the collecting plate by arranging 4 layers of water curtain fog curtain nets, thereby achieving high-efficiency dust removal effect, ensuring that the problem that the dust generated by tunnel construction pollutes the atmospheric environment is avoided, and simultaneously effectively avoiding the waste of water resources.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a schematic view of a water curtain and a fog curtain structure and arrangement mode.
Fig. 3 is a schematic structural diagram of a bus bar.
The explanation of each reference number in the figure is: a square box body-1; an air inlet-11; an air outlet-12; a water outlet-13; a wind deflector-14; a tunnel fan-2; a water curtain fog curtain-3; a bus bar-4; a vertical baffle-41; a wedge-shaped mounting plate-42; a branch water pipe-5; iron wire mesh-51; a main water pipe-6 with pressure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so as to further understand the concept, the technical problems solved, the technical features constituting the technical solutions, and the technical effects brought by the technical solutions.
As shown in fig. 1, the dust falling device for the underground excavation of the tunnel comprises a square box body 1, wherein one end of the square box body 1 is provided with an opening on a vertical surface, a terrace-shaped air inlet 11 facing the interior of the box body is arranged in the opening, and the air inlet 11 is sleeved outside a tunnel fan 2; the other end of the square box body 1 is provided with an air outlet 12, and a plurality of water curtain fog curtains 3 which are arranged in parallel are arranged between the air inlet 11 and the air outlet 12; an inclined confluence plate 4 is further arranged on the inner wall of the square box body 1 below the water curtain fog curtain 3;
as shown in fig. 2, the water curtain mist curtain 3 comprises a plurality of branch water pipes 5 arranged at the top of the inner side of the square box body 1 along the width direction of the box body, the branch water pipes 5 are converged on a main water pipe 6 with pressure, and the main water pipe 6 with pressure penetrates through the side wall of the top of the square box body 1 and is connected with an external water pipe; the lower half part of the branch water pipe 5 is provided with a water spray hole which inclines towards the direction of the air inlet 11, and an atomizing nozzle is arranged in the water spray hole; the bottom of the branch water pipe 5 is also connected with a vertical wire mesh 51.
When the device is actually used, the device is erected at the air outlet of the tunnel fan 2 outside the underground excavated tunnel, the air duct of the tunnel fan 2 is tightly sleeved in the air inlet 11 of the device, and the terrace-shaped air inlet 11 can ensure that the device can be suitable for tunnel fans 2 with different specifications. Open outside water pipe, will press the water input to press in area main water pipe 6, and follow and press in area main water pipe 6 gets into branch water pipe 5, spout in the atomizer in the water spray hole of branch water pipe 5 the latter half, form the water curtain, start tunnel fan 2 back, the gas that contains the high concentration dust is discharged and gets into square box 1 from tunnel fan 2, and in proper order through the back that erodees of multilayer water curtain, the dust is moistened the weight gain by the water mist, and drop and collect on cylinder manifold 4 of below, thereby discharge square box 1. During this process, the wire mesh 51 functions to adsorb the mist containing dust and help the mist containing dust slide down. Because the tunnel fan 2 is usually high in power, the effect of arranging the multiple layers of water curtain fog curtains 3 is that after the water curtain at the front end is inclined by the tunnel fan 2 under the action of high-speed airflow, the subsequent water curtain fog curtains 3 can keep integrity and continuity. The water mist containing dust settles or slides down to the bus board 4 along the wire mesh 51 and then is gathered and discharged under the action of the bus board.
As shown in fig. 3, as a preferred embodiment, the front end of the bus bar 4 is trapezoidal, and vertical baffles 41 are arranged on the left and right sides.
In this embodiment, the rear end of the cylinder manifold 4 is square, the left and right sides of the square part and the left and right side walls of the square box body 1 are abutted tightly, the front end is trapezoidal, so that the confluence effect is achieved, and meanwhile, the left and right sides of the cylinder manifold 4 are provided with vertical baffle plates 41 to prevent water mist from leaking out from the side direction after confluence.
As a further embodiment, a wedge-shaped mounting plate 42 which is low in front and high in back along the wind direction is arranged on the bottom plate of the square box 1 below the water curtain fog curtain 3, and the bus bar 4 is arranged on the wedge-shaped mounting plate 42.
In the embodiment, the convergence plate 4 keeps an inclined angle through the wedge-shaped mounting plate 42, so that water mist flows out after converging; meanwhile, the tail end of the wedge-shaped mounting plate 42 is higher close to one end of the air inlet 11, so that the influence of high-speed airflow discharged by the tunnel fan 2 on converged water mist is avoided, and the water mist is convenient to discharge.
As a further embodiment, a water outlet 13 is opened on the bottom plate of the square box 1 at the end of the confluence plate 4, and a wind screen 14 is provided below the water outlet 13 and on the side close to the air outlet 12.
In this embodiment, because the delivery port 13 at the end of the bus bar 4 is close to one side of the air outlet 12, in order to avoid the influence on the delivery port 13 caused by the gas flowing in the air outlet 12, the wind blocking plate 14 is arranged on the lower wall of the square box body 1 between the delivery port 13 and the air outlet 12, and meanwhile, the delivery port 13 can also play a role of auxiliary air exhaust, thereby avoiding the influence on the water flow direction in the delivery port 13 caused by the negative pressure due to the overhigh gas flow rate at the air outlet 12.
As a preferred embodiment, the side wall of the square box body 1 is also provided with an opening and closing door hinged at one side.
In this embodiment, the effect of the door that opens and shuts lies in being convenient for in the later stage use to the maintenance of square 1 internal pipeline and to the clearance of cylinder manifold 4.
As a preferred embodiment, the number of the water curtain mist curtains 3 is four.
As a preferred embodiment, the distance between the adjacent water curtain fog curtains 3 is gradually increased along the wind direction.
In this embodiment, the distance between the subsequent water curtain mist curtains 3 is increased to prevent the high-speed airflow discharged from the tunnel fan 2 from affecting the integrity and continuity of the subsequent water curtain, and ensure the integrity of the water curtain mist curtains 3 at one end of the principle air inlet 11.
The terms "connected" and "fixed" in the description of the present invention may be fixed, formed, welded, or mechanically connected, and the specific meaning of the above terms in the present invention is understood.
In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc. are used in the orientation or positional relationship indicated only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element referred to must have a particular orientation and therefore should not be construed as limiting the present invention.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; while the utility model has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The dust fall device for the underground excavation tunnel is characterized by comprising a square box body (1), wherein one end of the square box body (1) is provided with an opening in a vertical surface, a terrace-shaped air inlet (11) facing the interior of the box body is formed in the opening, and the air inlet (11) is sleeved outside a tunnel fan (2); an air outlet (12) is formed in the other end of the square box body (1), and a plurality of water curtain mist curtains (3) which are arranged in parallel are arranged between the air inlet (11) and the air outlet (12); an inclined confluence plate (4) is further arranged on the inner wall of the square box body (1) below the water curtain fog curtain (3);
the water curtain fog curtain (3) comprises a plurality of branch water pipes (5) which are arranged at the top of the inner side of the square box body (1) along the width direction of the box body, the branch water pipes (5) are gathered on a pressure main water pipe (6), and the pressure main water pipe (6) penetrates through the side wall of the top of the square box body (1) and is connected with an external water pipe; the lower half part of the branch water pipe (5) is provided with a water spray hole which inclines towards the direction of the air inlet (11), and an atomizing spray head is arranged in the water spray hole; the bottom of the branch water pipe (5) is also connected with a vertical wire mesh (51).
2. A dust fall device for an underground excavated tunnel according to claim 1, wherein the front end of the collecting plate (4) is trapezoidal, and vertical baffles (41) are provided on left and right sides.
3. A dust-settling device for an underground excavation tunnel according to claim 2, wherein a wedge-shaped mounting plate (42) which is low in front and high in back in the wind direction is arranged on the bottom plate of the square box body (1) below the water curtain mist curtain (3), and the bus bar (4) is arranged on the wedge-shaped mounting plate (42).
4. A dust-settling device for an underground excavation tunnel according to claim 3, characterized in that a water outlet (13) is arranged on the bottom plate of the square box body (1) at the tail end of the confluence plate (4), and a wind screen (14) is arranged below the water outlet (13) and close to the air outlet (12).
5. A dust-settling device for a tunnel excavation according to claim 1, wherein the side wall of the square box body (1) is further provided with an opening and closing door hinged at one side.
6. A dust fall device for an underground excavation tunnel according to claim 1, characterized in that the number of the water curtain mist curtains (3) is four.
7. A dust fall device for an underground excavated tunnel according to claim 1, wherein a distance between the adjacent water curtain mist curtains (3) is gradually increased in a wind direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220267260.5U CN216811770U (en) | 2022-02-10 | 2022-02-10 | Dust falling device for underground excavation tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220267260.5U CN216811770U (en) | 2022-02-10 | 2022-02-10 | Dust falling device for underground excavation tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216811770U true CN216811770U (en) | 2022-06-24 |
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ID=82041058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220267260.5U Active CN216811770U (en) | 2022-02-10 | 2022-02-10 | Dust falling device for underground excavation tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216811770U (en) |
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2022
- 2022-02-10 CN CN202220267260.5U patent/CN216811770U/en active Active
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