CN217270296U - Tunnel blasting transient smoke dust absorption and reduction device - Google Patents
Tunnel blasting transient smoke dust absorption and reduction device Download PDFInfo
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- CN217270296U CN217270296U CN202122052957.9U CN202122052957U CN217270296U CN 217270296 U CN217270296 U CN 217270296U CN 202122052957 U CN202122052957 U CN 202122052957U CN 217270296 U CN217270296 U CN 217270296U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The utility model provides an absorption and reduction device for tunnel blasting transient smoke dust, one end of the absorption and reduction device is an air inlet, and the other end is an air outlet; defining the gas inlet as upstream and the gas outlet as downstream; a protective net is arranged at the air inlet and used for preventing blasting flying stones from entering the absorption and reduction device; a dust removal fan is also arranged in the absorption and reduction device and is arranged at the downstream of the protective net; a dust hood is arranged at the downstream of the dust removal fan and is used for collecting dust entering the absorption and reduction device; a water mist purifier is arranged at the downstream of the dust collecting bag and used for spraying an ammonia water solution, and small-particle dust and harmful gas are dissolved in the ammonia water solution so that purified air flow is discharged from an air outlet. Set up dust cage and water smoke clarifier in this absorption and subduction device, not only can filter most dust, can dissolve the harmful gas in tiny particle dust and the big gun cigarette moreover, air after the purification blasting.
Description
Technical Field
The utility model belongs to the technical field of absorb and subduct the device, concretely relates to absorption and subduct device of tunnel blasting prompt smoke and dust.
Background
With rapid development of the times in recent years, people have higher and higher construction requirements in the field of tunnel engineering, when the construction is carried out in a tunnel, the tunnel is often required to be blasted and propelled, a large amount of dust and blast fume are generated after the tunnel is blasted, and a respiratory system of an operator is easily damaged under the condition that the operator is exposed to the large amount of dust in a transitional way, so that the physical health of the operator is directly damaged; the probability of pneumoconiosis for people working in a frequent dusty environment is also greatly increased.
In the blast smoke generated by explosive explosion, the main components of toxic gas are carbon oxide, nitrogen oxide and sulfide. If the explosive contains sulfur or sulfide, toxic gases such as hydrogen sulfide and sulfurous anhydride can be generated in the explosion process, the toxic gases have great harm, and when a certain amount of toxic gases are inhaled by a human body, headache, palpitation, vomiting, myasthenia of limbs and syncope can be caused, and spasm, respiratory pause and even death of the human body can be caused if the toxic gases are serious.
Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an absorption and subduction device of tunnel blasting prompt smoke and dust to at least, produce a large amount of dusts and big gun cigarette after solving present tunnel blasting and endanger the healthy scheduling problem of operation personnel.
In order to achieve the above object, the present invention provides the following technical solutions:
the device comprises an absorption and reduction device for tunnel blasting transient smoke dust, wherein one end of the absorption and reduction device is an air inlet, and the other end of the absorption and reduction device is an air outlet; defining the gas inlet as upstream and the gas outlet as downstream;
a protective net is arranged at the air inlet and used for preventing blasting flyrock from entering the absorption and reduction device;
a dust removal fan is also arranged in the absorption and reduction device and is arranged at the downstream of the protective net;
a dust collection cover is arranged at the downstream of the dust removal fan and is used for collecting dust entering the absorption and reduction device;
and a water mist purifier is arranged at the downstream of the dust collecting bag and used for spraying an ammonia water solution, and small-particle dust and harmful gas are dissolved in the ammonia water solution so that the purified gas flow is discharged from a gas outlet.
In the absorption and abatement device described above, preferably, the dust removal fan includes a blade and an explosion-proof motor, the blade is disposed downstream of the protection net, and the explosion-proof motor is located downstream of the blade;
the air inlet is of a flaring structure, and the aperture of the air inlet is gradually increased from the downstream to the upstream.
In the absorbing and reducing device as described above, preferably, the dust collecting cover includes a dust collecting frame and a dust collecting bag fixed on the dust collecting frame;
on the inner wall of absorption and subduction device, all be provided with the stopper in the upper reaches and the low reaches of collection dirt frame, the stopper is used for the restriction the position of collection dirt frame.
The absorption and abatement device as described above, preferably, the absorption and abatement device has a cylindrical shape, and the dust collection cover is detachably mounted in the absorption and abatement device;
the position of the absorption and reduction device corresponding to the dust collection cover is provided with a detachable shell, the cross section area of the opening of the detachable shell is larger than that of the dust collection cover, and the detachable shell is connected to the absorption and reduction device through a bolt.
The absorption and abatement device described above, preferably, a plurality of the mist purifiers are provided along an extending direction of the absorption and abatement device; the water mist purifier comprises a water pipe and water mist nozzles, the water pipe extends out of the absorption and reduction device and is connected with a water source, and a plurality of water mist nozzles are arranged on the water pipe inside the absorption and reduction device in parallel.
The absorption and abatement device as described above, preferably, a liquid collecting tank is provided downstream of the water mist purifier, the liquid collecting tank being provided at a bottom of the absorption and abatement device, the liquid collecting tank being configured to collect a solution in which small particle dust and harmful gases are dissolved;
the cross section of the liquid collecting groove is of a triangular structure, and the liquid collecting groove is provided with a slope surface which is inclined downwards so as to facilitate the solution to flow into the liquid collecting groove.
In the absorption and abatement device, preferably, a flange is arranged around the top of the liquid collecting tank, and a threaded hole is arranged on the flange of the liquid collecting tank;
the liquid collecting tank is detachably fixed on the absorption and reduction device through bolts;
and a sealing gasket is arranged between the flange edge of the liquid collecting tank and the absorption and reduction device.
In the absorption and abatement apparatus described above, preferably the side of the sump is provided with a liquid outlet for draining solution from the sump.
The absorption and abatement device as described above, preferably, a baffle plate is provided downstream of the water mist purifier, the baffle plate being provided above the sump;
the guide plate is obliquely put down and arranged and is used for guiding the solution to the liquid collecting tank.
In the absorption and abatement apparatus according to the present invention, the flow guide plate is preferably provided in a plurality in the up-down direction, and any two adjacent flow guide plates have portions overlapping each other in the horizontal direction.
Has the advantages that: the absorption and reduction device for tunnel blasting transient smoke dust provided by the utility model is provided with the dust collection cover and the water mist purifier, which not only can filter most dust, but also can absorb dust, thereby achieving the purpose of dust removal; and moreover, the small-particle dust and harmful gas in the blast smoke can be dissolved, the purpose of eliminating the blast smoke is achieved, and the air after blasting is purified.
Set up built-in fan in this absorption and subduction device and can accelerate the interior air flow of tunnel, the dirty air absorption of face of blasting face is purified the back of discharging into the face, through with the air cycle flow in the tunnel, not only can air-purifying, can also increase substantially the ventilation efficiency in the tunnel.
Drawings
Fig. 1 is a schematic structural diagram of an absorption and reduction device according to an embodiment of the present invention.
In the figure: 1. a protective net; 2. a blade; 3. an explosion-proof motor; 4. a dust collection cover; 5. a water mist spray head; 6. a water pipe; 7. a baffle; 8. a liquid outlet; 9. a liquid collecting tank; 10. and a limiting block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
In the description of the present invention, the directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are the directions or positional relationships shown on the basis of the drawings, and are only for convenience of description of the present invention, but not for the purpose of requiring the present invention to be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
According to the specific embodiment of the utility model, as shown in fig. 1, the utility model provides an absorption and reduction device for tunnel blasting transient smoke dust, one end of the absorption and reduction device is an air inlet, and the other end is an air outlet; defining the air inlet as an upstream and the air outlet as a downstream; a protective net 1 is arranged at the air inlet, and the protective net 1 is used for preventing blasting flyrock from entering the absorption and reduction device; a dust removal fan is also arranged in the absorption and reduction device and is arranged at the downstream of the protective net 1; a dust collection cover 4 is arranged at the downstream of the dust removal fan, and the dust collection cover 4 is used for filtering dust entering the absorption and reduction device; a water mist purifier is arranged at the downstream of the dust collecting bag and used for spraying an ammonia water solution, and small-particle dust and harmful gas are dissolved in the ammonia water solution so that purified air flow is discharged from an air outlet.
In this embodiment, the dust removal fan is of an air draft type, and the flow direction of the wind flows from right to left in fig. 1. This absorption and subduct the device and install at the support top behind the tunnel face, after the face blasting, absorb and subdue the device and start, absorb and subdue the device and inhale absorption and subduct the device with the dust and the big gun smoke that produce after blasting, wherein dust cage 4 can filter most dust, then water smoke purifier blowout solution, during dust and the big gun smoke of tiny granule can be merged into the solution, then the absorption of discharging and subducting the device. In other embodiments, fans with different powers can be arranged according to the ventilation and dust removal quality in the hole, or the section size of the absorption and reduction device can be increased; a plurality of absorption and abatement devices may also be provided within the tunnel.
In this embodiment, the air inlet is a flaring structure, and the aperture of the air inlet gradually increases from downstream to upstream, so that a negative pressure zone is formed at the air inlet, and more smoke can be sucked.
The solution sprayed out by the water mist purifier can be an ammonia water solution, the ammonia water solution is used for dissolving harmful gas in the blast smoke, and the ammonia water is mainly used for removing carbon oxides. In other embodiments, the water mist purifier is used to eject other alkaline solutions used to absorb sulfides, nitrogen oxides and carbon oxides, which are essentially acid-base neutralization reactions.
In other embodiments, a plurality of the water mist purifiers are provided along the extending direction of the absorption and abatement device; so as to absorb all the small-particle dust and harmful gas as much as possible and improve the efficiency of absorbing the dust and the harmful gas. The dust collecting covers can be arranged in parallel along the horizontal direction, and the dust collecting covers and the multiple groups of water mist purifiers can improve the cleaning effect of dust and harmful gas.
The dust removal fan comprises blades 2 and an explosion-proof motor 3, the blades 2 are arranged on the downstream of the protective screen 1, and the explosion-proof motor 3 is located on the downstream of the blades 2.
The dust collecting cover 4 comprises a dust collecting frame and a dust collecting bag fixed on the dust collecting frame; the dust collecting bag can filter most of dust with pm more than 2.5, and absorbs and reduces the inner wall of the device, the upstream and the downstream of the dust collecting frame are both provided with a limiting block 10, the limiting block 10 is used for limiting the position of the dust collecting frame, and the limiting block 10 and the dust collecting frame are in blocking fit front and back to ensure that the integrated frame does not move.
The absorption and reduction device is cylindrical, and the dust collection cover 4 is detachably arranged in the absorption and reduction device; a detachable shell is arranged on the absorption and reduction device corresponding to the position of the dust collection cover 4, and the cross sectional area of the opening of the detachable shell is larger than that of the dust collection cover 4, so that the dust collection cover 4 can be taken out of the detached detachable shell; the removable housing is bolted to the absorption and abatement unit.
In other embodiments, two ends of the detachable shell are positioned in the same horizontal plane, one end of the detachable shell is hinged on the absorption and reduction device, and the other end of the detachable shell is fixed on a shell of the absorption and reduction device through a pin or a bolt; the disassembly and assembly operation of the detachable shell is convenient.
Because the amount of the smoke and dust is large, the dust collecting net can be blocked, in other embodiments, a vibrator is arranged on the dust collecting frame and is used for vibrating the dust in the dust collecting cover; the dust collecting cover is characterized in that a dust collecting groove is arranged below the dust collecting cover, flange edges are arranged around the dust collecting groove, the dust collecting groove is detachably fixed on a shell of the absorption and reduction device through bolts, water is arranged in the dust collecting groove, and the water wets dust, so that the condition of dust re-flying is prevented.
The water mist purifier comprises a water pipe 6 and water mist nozzles 5, the water pipe 6 extends out of the absorption and reduction device to be connected with a water source, the water pipe 6 in the absorption and reduction device is provided with a plurality of water mist nozzles 5 in parallel, in the embodiment, 4 water mist nozzles 5 are arranged on the water pipe 6 in parallel, and in other embodiments, other numbers of water mist nozzles 5 can be arranged; the water pipe 6 in the absorption and reduction device can be in a ring shape, a cross shape, a rice shape and other structures, and a plurality of water mist spray heads 5 are uniformly distributed on the water pipe 6.
A liquid collecting tank 9 is arranged at the downstream of the water mist purifier, the liquid collecting tank 9 is arranged at the bottom of the absorption and reduction device, and the liquid collecting tank 9 is used for collecting solution in which small-particle dust and harmful gas are dissolved; the cross section of the liquid collecting groove 9 is of a triangular structure, and the liquid collecting groove 9 is provided with a slope surface which is inclined downwards so as to facilitate the solution to flow into the liquid collecting groove 9.
A flange edge is arranged on the periphery of the top of the liquid collecting tank 9, and a threaded hole is formed in the flange edge of the liquid collecting tank 9; the liquid collecting tank 9 is detachably fixed on the absorption and reduction device through bolts; a sealing gasket is arranged between the flange edge of the liquid collecting tank 9 and the absorption and reduction device. The sump 9 is removable from the absorption and abatement device to facilitate cleaning of the sump 9 of deposits.
The lateral part of collecting tank 9 is provided with liquid outlet 8, and liquid outlet 8 is arranged in the solution of discharge collecting tank 9, and drain pipe 6 can be connected to liquid outlet 8 to in time with the liquid discharge in collecting tank 9.
A guide plate 7 is arranged at the downstream of the water mist purifier, and the guide plate 7 is arranged above the liquid collecting tank 9; the guide plate 7 is obliquely arranged downwards, and the guide plate 7 is used for guiding the solution to the liquid collecting tank 9. Under the effect of wind force, the solution that has dissolved tiny particle dust and harmful gas can drift to the low reaches, and when solution met guide plate 7, solution can be concentrated on guide plate 7 to leave the catch basin 9 of guide plate 7 below, this collection of solution of also being convenient for.
In this embodiment, the flow guide plate 7 is provided with a plurality of flow guide grooves in parallel, and the flow guide grooves extend from top to bottom so as to guide the solution downward.
A plurality of guide plates 7 are arranged along the vertical direction, and any two adjacent guide plates 7 have mutually overlapped parts in the horizontal direction so as to ensure that the projection areas of the plurality of guide plates 7 in the horizontal direction completely cover all the water mist nozzles 5; and a gap is formed between any two adjacent guide plates 7, and the air purified by the absorption and reduction device can be discharged from the gap.
To sum up, the utility model provides an absorption and subduction device of tunnel blasting prompt smoke and dust should absorb and subduct and set up dust cage and water smoke clarifier in the device, not only can filter most dust, can dissolve the harmful gas in tiny particle dust and the big gun cigarette moreover, air after the purification blasting, the environment of optimization operation guarantees that the personal health of operation personnel is not harmed. Set up built-in fan in this absorption and subduction device and can accelerate the interior air flow of tunnel, the dirty air absorption of face of blasting face is purified the back of discharging into the face, through with the air cycle flow in the tunnel, not only can air-purifying, can also increase substantially the ventilation efficiency in the tunnel.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the following claims are intended to cover all modifications, equivalents, and improvements falling within the spirit and principles of the present invention.
Claims (10)
1. The device for absorbing and reducing tunnel blasting transient smoke dust is characterized in that one end of the device for absorbing and reducing tunnel blasting transient smoke dust is an air inlet, and the other end of the device for absorbing and reducing tunnel blasting transient smoke dust is an air outlet; defining the gas inlet as upstream and the gas outlet as downstream;
a protective net is arranged at the air inlet and used for preventing blasting flyrock from entering the absorption and reduction device;
a dust removal fan is also arranged in the absorption and reduction device and is arranged at the downstream of the protective net;
a dust collection cover is arranged at the downstream of the dust removal fan and is used for collecting dust entering the absorption and reduction device;
and a water mist purifier is arranged at the downstream of the dust collection cover and used for spraying an ammonia water solution, and small-particle dust and harmful gas are dissolved in the ammonia water solution so that the purified gas flow is discharged from a gas outlet.
2. The absorption and abatement apparatus according to claim 1, wherein the dust removal blower comprises a blade disposed downstream of the protective mesh and an explosion-proof motor disposed downstream of the blade;
the air inlet is of a flaring structure, and the aperture of the air inlet is gradually increased from the downstream to the upstream.
3. The absorption and abatement apparatus according to claim 1, wherein the dust cage comprises a dust collection frame and a dust collection bag secured to the dust collection frame;
on the inner wall of the absorption and reduction device, limiting blocks are arranged on the upstream and the downstream of the dust collection frame and used for limiting the position of the dust collection frame.
4. An absorption and abatement device according to claim 3, wherein the absorption and abatement device is cylindrical in shape, and the dust cage is removably mounted in the absorption and abatement device;
the absorption and reduction device is provided with a detachable shell at a position corresponding to the dust collection cover, the cross section area of the opening of the detachable shell is larger than that of the dust collection cover, and the detachable shell is connected to the absorption and reduction device through a bolt.
5. The absorption and abatement apparatus according to claim 1, wherein a plurality of said water mist purifiers are provided along an extension direction of said absorption and abatement apparatus;
the water mist purifier comprises a water pipe and water mist nozzles, the water pipe extends out of the absorption and reduction device and is connected with a water source, and a plurality of water mist nozzles are arranged on the water pipe inside the absorption and reduction device in parallel.
6. The absorption and abatement apparatus according to claim 5, wherein a sump is provided downstream of the water mist purifier, the sump being provided at a bottom of the absorption and abatement apparatus, the sump being adapted to collect a solution in which small particle dust and noxious gases are dissolved;
the cross section of the liquid collecting tank is of a triangular structure, and the liquid collecting tank is provided with a slope surface which is inclined downwards so as to facilitate the solution to flow into the liquid collecting tank.
7. The absorption and abatement apparatus according to claim 6, wherein a flange is provided around the top of the sump, the flange of the sump having a threaded aperture;
the liquid collecting tank is detachably fixed on the absorption and reduction device through bolts;
and a sealing gasket is arranged between the flange edge of the liquid collecting tank and the absorption and reduction device.
8. An absorption and reduction unit according to claim 6, wherein the side of the sump is provided with a liquid outlet for draining the solution in the sump.
9. The absorption and abatement apparatus according to claim 6, wherein a baffle is provided downstream of the water mist purifier, the baffle being disposed above the sump;
the guide plate is obliquely put down and arranged and is used for guiding the solution to the liquid collecting tank.
10. The absorption and subtraction device according to claim 9, wherein the baffle is provided in plurality in the up-down direction, and any two adjacent baffles have portions overlapping each other in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052957.9U CN217270296U (en) | 2021-08-27 | 2021-08-27 | Tunnel blasting transient smoke dust absorption and reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122052957.9U CN217270296U (en) | 2021-08-27 | 2021-08-27 | Tunnel blasting transient smoke dust absorption and reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217270296U true CN217270296U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122052957.9U Active CN217270296U (en) | 2021-08-27 | 2021-08-27 | Tunnel blasting transient smoke dust absorption and reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217270296U (en) |
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2021
- 2021-08-27 CN CN202122052957.9U patent/CN217270296U/en active Active
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